TW201814266A - Car suspension measuring system - Google Patents

Abstract

A car suspension measuring system has two jacking plates mounted adjacent to a recess. Two side of the recess has two jacks. The jacks are connected two pressure sensors respectively and a car frame fixing element is mounted around the recess. In the present invention, a car parked on the ground and wheels are located on the jacking plates. The car frame fixing element is used to define and fix a height of the car. The jacks left up the car and deform-sensors detects deformation parameters of the car suspensions. The pressure sensors detect the loading force of the jack. Thus, car load may be calculated from this detection.

Description

Measuring system for calibrating automotive spring parameters

The present invention relates to a system for measuring, and more particularly to a measuring system for calibrating automotive spring parameters.

Existing car frames are supported on the wheels by springs, but the stiffness of each spring is different. Although there is currently a means for measuring the amount of deformation of each spring on the frame of the automobile, for example, the displacement sensor or the displacement sensing module described in the TW Patent Application No. 104200912 "Vehicle Load Metering Device" patent is measuring the amount of spring deformation. s method. However, at present, there is no need to measure the stiffness of each spring, and of course there is no method and measuring device for measuring the stiffness of each spring that has been mounted on the frame. Therefore, the existing means cannot accurately measure the load of the vehicle by the displacement of the spring and the stiffness of the spring.

In fact, if the load on the car frame is different, the effects on the springs under the frame are different. Only the relationship between the force and deformation of each spring is known, and the corresponding load can be calculated according to the total displacement of each spring. It should be pointed out that the spring constant of the spring corresponding to each wheel is sometimes not constant during the load of the car. It may be different during different stages of deformation. For example, sometimes the spring of a wheel is composed of two The springs are overlapped. When the load is light, one spring is stressed. When the load is heavy, the two springs are simultaneously stressed. This is a major challenge for measuring the force and deformation relationship of each spring of the whole vehicle. Currently, there is no ability to measure the car. The standard device for each spring stiffness is therefore unable to calibrate the force and deformation relationship of the springs of the individual cars.

There is currently no standard device capable of measuring the stiffness of each spring of a car. To this end, the present invention is intended to calibrate the relationship between the force and deformation (line displacement or angular displacement or strain) of each spring on the frame of the automobile, so that as long as the deformation of each spring is measured, it can be converted into a force. After the total calculation, you can know the load of the car.

In order to achieve the above object, the present invention provides a measuring system for calibrating a car spring parameter for measuring a spring of a vehicle to be tested disposed between a frame and a wheel, and the main content includes two urging devices disposed on the ground and a frame. Fixing device and more than one deformation sensor, wherein:

a mounting pit is arranged in the ground, the mounting pit is an elongated pit extending in the left-right direction, and two top plates are arranged across the left and right positions of the mounting pit top;

The two urging devices are respectively disposed on the left and right sides of the installation pit, and each urging device is provided with a base at the bottom of the installation pit, a jack rail is arranged in the middle of the pedestal, and a jack is slid on each jack rail. a slider, transversely driving a driving screw hole in the middle of each jack slider, corresponding to the left and right sides of each jack rail, combining two bottom screw seats on each base, and inserting a bottom screw bearing in each bottom screw seat, in two A bottom screw is disposed between the bottom screw bearings, and each bottom screw is screwed through each of the driving screw holes, and a transmission is coupled to each base, and each of the transmissions is coupled to each of the bottom screws, and each of the transmissions is coupled and coupled with a motor, and each jack is disposed on each of the jacks. Fixing a jack on the top, the jack is connected to a pressurized oil pipe, and an oil pressure sensor is connected to each of the pressurized oil pipes;

The frame fixing device is disposed on the ground and located around the installation pit for fixing a height position of the frame of the automobile to be tested;

Each deformation sensor is respectively installed at a spring of the automobile to be tested, for example, between the frame and the spring base, for measuring the linear displacement of the spring, or the end of the front and rear positions of the leaf spring for measuring the spring. The angular displacement, or the strain gauge is adhered to the surface of the leaf spring, the strain of the spring is measured, and the deformation of each spring is sensed by the above means.

Further, the frame fixing device of the present invention is combined with a gantry frame on the ground, the gantry frame is above the installation pit, and a top beam is arranged on the top of the gantry frame at the bottom of the top beam. The left-right moving form is combined with a movable head holder, and two linear stretching devices are coupled to the left and right sides of the movable head holder, and a pressing head is coupled to the bottom end of each linear stretching device.

Further, the present invention forms a plane on the surface of the ground, the frame fixing device includes four tension fixing brackets, each tension fixing bracket is provided with a base, and a suction structure is provided at the bottom of each base to each attraction structure The base can be attracted and fixed on the plane, a screw elevator is combined at the top of each base, a vertical lifting screw is screwed into each screw elevator, and a speed reducer is fixed in each base, and each speed reducer is connected with each screw elevator In each of the speed reducers, a motor is combined, and each of the speed reducers drives each of the lifting screws to be lifted and lowered. A lifting platform is coupled to the top end of each lifting screw, and a clamping head is arranged on each lifting platform. A stopper is arranged on the top surface of the clamping head, and a slider is slidably disposed on the top surface of each clamping head so as to advance and retreat toward the stopper, in the bottom of each slider facing the side of each stopper The recess forms a lower edge groove of the frame channel steel.

Preferably, the plane of the present invention is a magnetic plane, and the attraction structure is an electromagnet configuration.

Preferably, the suction structure of the present invention is an airbag structure, and a negative pressure groove is formed at the bottom of each airbag structure, and each negative pressure groove is a groove with an opening facing downward, and an air suction pipe is disposed around each airbag structure. The inner ends of the respective exhaust pipes are in communication with the respective negative pressure grooves.

Further, the present invention is provided with a concave track pit on the front and rear sides of the installation pit, and the frame fixing device combines four double coordinate mobile platforms in a matrix arrangement manner at the bottom of the track pit. Each double-coordinate mobile platform is fixed with a longitudinal dovetail guide rail at the bottom of the track pit, and a longitudinal moving platform is combined on each longitudinal dovetail guide rail in a front-back sliding manner, and a lateral dovetail guide rail is arranged on each longitudinal moving platform. The lateral dovetail rail is combined with a lateral moving platform; the frame fixing device comprises four tension fixing brackets, each tension fixing bracket fixes a base on each lateral moving platform, and a screw jack is combined on the top of each base, in each screw elevator A vertical lifting screw is screwed, and a speed reducer is fixed in each base, and each speed reducer is connected with each screw elevator, and a motor is coupled to each speed reducer, and each speed reducer drives each lifting screw to lift and lower. The top end of each lifting screw is combined with a lifting platform, and a clamping head is arranged on each lifting platform, and the top surface of each clamping head is upwardly extended a stop block, and a slider is slidably disposed on the top surface of each clamping head so as to advance and retreat toward the stopper block, and a frame groove is concavely formed in a bottom portion of each slider toward the side of each stopper block. The lower edge of the steel is grooved.

Further, the present invention is provided with a turntable at the top end of each of the lifting screws, a turntable groove is formed in each of the lifting platforms, and a shaft hole is bored downward in the center of each turntable groove, and the top end of each lifting screw is worn upward. Each of the turntables is disposed in each of the turntable slots in a rotatable manner through the respective shaft holes.

Further, the present invention pivotally connects two clamping hooks respectively extending upward and inward on opposite sides of the lifting platform, and a hook is protruded downward at the end of each clamping hook, the clips a neck is formed in the middle of the tight head, and each neck is located between the ends of the two clamping hooks, and two convex plates are extended toward the opposite sides at the bottom of each clamping head, and a concave surface is respectively disposed on the top surfaces of the two convex plates a hook groove, two hook claws of the two clamping hooks are embedded in the two hook grooves, and a gap between the bottom surface of each clamping head and each lifting platform is greater than the depth of each hook groove, and is transmitted when each clamping head is pulled up The two clamping hooks are fixed together with the lifting platforms.

Further, the present invention is provided with a concave track pit on the front and rear sides of the installation pit, and the frame fixing device is combined with four double coordinates in a matrix arrangement at the bottom of the track pit. The platform, each double-coordinate mobile platform is fixed with a longitudinal dovetail guide rail at the bottom of the track pit, and a longitudinal moving platform is combined on each longitudinal dovetail guide rail in a front-back sliding manner, and a lateral dovetail guide rail is arranged on each longitudinal moving platform. Each lateral dovetail rail is combined with a lateral moving platform, and a pivoting seat is coupled to each lateral moving platform, and the screw is pivotally connected to each pivoting joint, and each lower screw is screwed with an internally threaded rod at the top of each internally threaded rod. A screw is screwed onto the top end of each upper screw to incorporate a steel hook.

Preferably, the present invention incorporates a positioning device on the ground in the middle of the rear of the mounting pit. The positioning device is a winch and extends a steel cable outwardly, and a hook is attached to the outer end of the cable.

When using the present invention, since different cars have different left and right wheel spacings, in order to match the position of the left and right wheels of the automobile, it is necessary to adjust the positions of the two top plates across the left and right sides of the top of the mounting pit to make the car open. When the crater is installed, the two top plates can be simultaneously pressed by the left and right wheels of the automobile, so that the jacks of the two urging devices can actually lift the top plates and the wheels when they are topped, and then drive by the motor of each urging device. Each of the transmissions drives the bottom screw to rotate, and the jacks and the jacks are slid to the left and right, and the jacks are moved directly below the top plates.

When measuring by the invention, the vehicle is first driven to the top of the installation pit, and the two wheels of the same front and rear position are successively crushed on the two top plates, and the frame fixing device is fixed when the springs of the same front and rear positions are equivalently measured. The position of the frame of the car and the height of the frame of the frame are avoided, and the frame of the car is moved up during the process of avoiding the two wheels on the top of the two jacks.

In the process of successively using the two jacks on the top spring, each oil pressure sensor can obtain the top force of each jack, and the deformation amount of each spring is obtained by manual measurement or by a deformation sensor provided at the spring of the automobile, In the process of jacking up on one jack, the relationship between the force and deformation of the two springs is calculated and the force and deformation curves are drawn. After measuring the spring of a group of wheels, and then starting the car or pulling the position of the car with the winch to measure the next set of springs, repeating the above-mentioned measurement operations several times, the force and deformation of each spring of the car can be measured. The curve calibration is completed, and the measurement operation of the calibration of the automobile spring parameters of the present invention is completed.

The utility model has the advantages that when all the springs of the automobile are calibrated, when it is necessary to know the load of the frame of the automobile, the deformation amount of each spring can be matched by the manual measurement method or the deformation sensor after the vehicle load. The force and deformation curves of the springs calculate the force of each spring, and the total load of the car can be obtained by summing the forces of all the springs of the car.

In order to understand the technical features and practical effects of the present invention in detail, it can be implemented in accordance with the contents of the specification, and further described in detail with reference to the preferred embodiments shown in the drawings.

As shown in FIG. 1 to FIG. 4, a first preferred embodiment of the present invention is a measuring system for calibrating automotive spring parameters, comprising a ground 10, two urging devices 20 respectively mounted on the ground 10, and a frame fixed. The device 30, a positioning device 40, a plurality of deformation sensors 50 mounted on the automobile 51 to be tested, and a laser ranging sensor group 60, wherein:

A mounting pit 11 is recessed in the ground 10, and the mounting pit 11 is an elongated strip extending laterally. As in the preferred embodiment, the mounting pit 11 is divided into two symmetrical manners on the left and right sides. The side pit 111 is provided with a top plate 12 at the top end of each of the side pits 111.

The two urging devices 20 are respectively disposed in the side pits 111. Each of the urging devices 20 is provided with a base 21 at the bottom of each side pit 111. A jack rail 211 is disposed in the middle of the base 21, and each jack rail 211 is laterally extended. The rails are combined with a jack slider 22 in a manner of sliding left and right on each of the jack rails 211, and a driving screw hole 221 is transversely penetrated in the middle of each jack slider 22, and two bottoms are provided on the left and right sides of the jack rails 21 The screw seat 23 and the two bottom screw seats 23 are coupled to the bases 21, and a bottom screw bearing 231 is embedded in the middle of each of the bottom screw seats 23, and a bottom screw is rotatably disposed between the two bottom screw bearings 231. 24. The bottom screws 24 are threaded through the drive screw holes 221 of the jack sliders 22.

A transmission 25 is disposed beside one of the bottom screw seats 23 of each of the force applying devices 20, and each of the transmissions 25 is coupled to each of the bases 21, and each of the transmissions 25 is coupled to each of the bottom screws 24, and a motor 26 is coupled to each of the transmissions 25. The motor 26 can be a stepping motor or a servo motor. Each motor 26 drives each of the transmissions to rotate the bottom screws 24, and a jack 27 is fixed on each of the jack sliders 22. The jacks 27 are connected to a pressurized oil pipe 271 for pressurization. The oil pipe 271 is connected to an external hydraulic drive source, and a hydraulic pressure sensor 28 is connected to each of the pressurized oil pipes 271.

The frame fixing device 30 is provided with a gantry frame 31 which is coupled to the floor 10 and spans the left and right sides of the installation pit 11. A top beam 311 is disposed in the middle of the top of the gantry frame 31. The top beam 311 is a transversely extending beam and is located above the installation pit 11, and a movable indenter bracket 32 is coupled to the bottom of the top beam 311 in a form movable by a screw system or a hydraulic system to move left and right. The left and right sides of the bottom of the movable ram bracket 32 are combined with two vertically disposed linear expansion devices 33, and each of the linear expansion devices 33 can be a hydraulic cylinder or an electric linear telescopic rod, such as the two linear expansion devices 33 of the preferred embodiment. It is a hydraulic cylinder, and a pressing head 34 is coupled to the bottom end of each linear stretching device 33. Each of the pressing heads 34 extends upwardly in the middle of the top portion with a ball head 341, and each ball head 341 is rotatably embedded in each straight line. The bottom of the device 33 is such that each of the rams 34 can be slightly oscillated to adjust the direction.

The positioning device 40 is a hoisting machine and is coupled to the ground 10 in the middle of the rear side of the mounting pit 11. The positioning device 40 extends outwardly from a cable 41, and a hook 42 is coupled to the outer end of the cable 41.

A plurality of deformation sensors 50 are respectively mounted on the automobile 51 to be tested. The automobile 51 is provided with a frame 52 on which a frame plate 53 is coupled, and a plurality of pairs are provided at the front and rear positions of the frame 52. The left and right wheels 54 of the same front and rear position are respectively provided with a spring 55 between each wheel 54 and the frame 52. Each spring 55 is a leaf spring, and each of the wheels 54 is supported by each spring 55. In the preferred embodiment, a plurality of deformation sensors are provided. Each of the deformation sensors 50 is a vertically disposed displacement sensor, and each of the deformation sensors 50 is coupled to a bottom end of each spring 55 or a spring seat coupled to a bottom end of each spring 55. The top end of each deformation sensor 50 is coupled to the corresponding frame 52. At the same time, the amount of deformation when each spring 55 is compressed and deformed by force is measured, and the deformation data of each spring 55 is transmitted outwards in a wired or wireless manner.

The laser ranging sensor group 60 is provided with a mirror 61 on the outer side of the axial center of the left and right wheels 54 of the automobile 51 to be tested, corresponding to the positions of the two mirrors 61, and correspondingly disposed on the inner surfaces of the left and right sides of the gantry frame 31. The two-reflection laser ranging sensor 62 has a mirror 63 attached to the rear of the automobile 51, and a lightning-side distance measuring sensor 64 is mounted on the positioning device 40. The data of the position of the left and right wheels 54 of the automobile 51 can be measured by the cooperation of the two reflective laser ranging sensors 62 and the two mirrors 61. By the cooperation of the lightning side ranging sensor 64 and the mirror 63, The data of the front and rear positions of the car 51 can be measured, and the above two kinds of data can be used as a reference for the parking position of the car 51.

Before the present invention is used, as shown in the first preferred embodiment shown in FIG. 2, since the pitches of the left and right wheels 54 of the various automobiles 51 are different, it is necessary to change the top plates 12 across the respective wheels of the different cars 51. The position of the top end of the side pit 111 is such that the pitch of the two top plates 12 is adjusted to be the same distance that can be simultaneously rolled by the left and right wheels 54 of the automobile 51. Then, the positions of the jacks 27 are adjusted, and the motor 26 of each of the urging devices 20 drives the respective transmissions 25 to rotate the bottom screw 24, so that the jacks 22 of the bottom screws 24 are slid to the left and right, and the jacks 27 are moved to the respective positions. Directly below the top plate 12, each jack 27 is capable of topping each of the top plates 12 together with each of the wheels 54.

Then, in conjunction with the center position of the frame plate 53 of the automobile 51, the position of the movable head holder 32 is moved left and right, so that the two linear stretching devices 33 can be located at the left and right symmetrical positions above the center of the frame plate 53, so that the two linear stretching devices 33 are directed toward When the lower is extended, it can be symmetrically pressed on the frame plate 53 by the two indenters 34, and the height position of the frame plate 53 can be stably fixed. When the present invention is used, the automobile 51 is driven to the lower side of the gantry frame 31, and the left and right wheels 54 of the same front and rear position are successively crushed on the two top plates 12, as shown in Fig. 1 and Fig. 2, before and after the vehicle 51 is started. The position is not easy to finely adjust so that the center of each wheel 54 is located directly above each jack 27, at this time, the hook 42 of the positioning device 40 can be coupled to the frame 52 of the automobile 51, and the positioning device 40 pulls the cable 41 to drag the automobile 51. In a manner, the front and rear positions of the automobile 51 are finely adjusted, and the centers of the two wheels 54 of the same front and rear positions are successively positioned directly above the two jacks 27.

When the springs 55 of the two wheels 54 in the same position are measured in the same position, as shown in FIG. 1 and FIG. 5, the two linear expansion devices 33 of the frame fixing device 30 are simultaneously extended downward, and the two indenters 34 are pressed against the frame. On the flat plate 53, the height position of the frame plate 53 of the automobile 51 is fixed. Then, the jacks 27 of the two force applying devices 20 put the two top plates 12 and the two wheels 54 on a certain stroke, for example, the wheel 54 is topped to a height of two-thirds of the upper limit position, since the frame plate 53 has been pressed by the two heads. 34 is pressed and fixed, so that the position of the frame plate 53 does not move up during the process of the two jacks 27 on the left and right wheels 54.

In the process of placing the two springs 55 on the two jacks 27, the top force of each jack 27 can be obtained by each oil pressure sensor 28, and the deformation amount of each spring 55 can be obtained by each deformation sensor 50, so that it can be used once. During the process of jacking the top of the jack 27, the relationship between the force and the deformation of the spring 55 supporting the two wheels 54 is calculated, and the force and deformation curves of the springs 55 are plotted with the parameters of the springs 55.

After the parameters of the spring 55 of the set of wheels 54 are measured in an equivalent manner, the next set of springs 55 is then measured, at which time the two jacks 27 are lowered in height, and the two linear telescopic devices 33 are retracted to the two indenters 34 to release the frame of the car 51. The flat plate 53 is then driven to drive the automobile 51 or the vehicle 51 is dragged by the positioning device 40, so that the two wheels 54 to be tested are crushed on the two top plates 12, and then the above-mentioned measurement operation is repeated. The parameter calibration of each spring 55 of the automobile 51 is completed, and the force and deformation curves of the springs 55 are drawn, and the measuring operation of the calibration spring spring parameters of the present invention is ended.

When the force and deformation relationship of all the springs 55 of the automobile 51 are calibrated, when the frame plate 53 of the automobile 51 is loaded, as long as the deformation amount of each spring 55 is obtained, for example, the automobile 51 provided with the plurality of deformation sensors 50, The linear deformation amount of each spring 55 can be obtained by each deformation sensor 50, and the bearing force of each spring 55 can be calculated by the linear deformation amount of each spring 55 and the force and deformation curve of each spring 55, and all the springs 55 are The bearing capacity of the frame plate 53, that is, the overall load of the automobile 51, can be obtained by load bearing.

In addition to the foregoing first preferred embodiment, the present invention is characterized in that a deformation sensor 50 in the form of a displacement sensor is mounted on the spring 55 of the automobile 51, and the process of measuring the top wheels 54 of each jack 27 by using the deformation sensors 50 is used. In addition to the linear displacement of each spring 55, each of the deformation sensors 50 may be an angular displacement sensor, and the angular displacement sensor may be attached to the front and rear ends of the plate-shaped spring 55 for measuring the top of each of the jacks 27. During the process of each wheel 54, the deformation amount of each plate-shaped spring 55 by the force rotation angle is matched with the top force of each jack 27 obtained by each hydraulic pressure sensor 28, and the force and deformation of each spring 55 can be calibrated (angle Change the relationship). When the load of the automobile 51 is measured, the amount of deformation of the rotation angle of each spring 55 can be measured, and the relationship between the applied force and deformation (angle change) can be used to calculate the force of each spring 55 and then add up to the automobile 51. The overall load. Of course, each deformation sensor 50 can be used as a strain sensor, adhered to the surface of the spring 55, and the relationship between the force and the strain of the spring 55 can be measured, so that the force of each spring can be known according to the strain of the spring 55, and then the sum is obtained. Car load.

The method for measuring the deformation of the spring 55 of the present invention can be performed by manually observing the recording mode of each spring 55 or by arranging other optical sensors beside each spring 55, in addition to measuring the deformation sensor 50 for measuring linear deformation and angular deformation. The measurement method is used to obtain the deformation amount of each spring 55 in the process of the top wheels 54 of each jack 27. Since the means for obtaining the deformation amount of each spring 55 is numerous, the present invention is not limited thereto.

When the linear telescopic device 33 of the frame fixing device 30 of the present invention is used as a hydraulic cylinder, the frame fixing device 30 can be used to verify the measurement accuracy of the spring 55 of each automobile 51 measured by the present invention. In the verification operation, the car 51 is driven to the lower side of the gantry frame 31, so that the frame plate 53 is located below the two linear expansion devices 33, and then the frame fixing device 30 drives the two linear expansion devices 33 to extend downward to make the two pressures The head 34 contacts the frame plate 53 and presses the frame plate 53 with a predetermined force. At this time, the amount of deformation of each spring 55 is measured by manual measurement or by various deformation sensors 50 mounted on the automobile 51, and then matched with each The weight of the spring 55 is calculated by the spring 55 and the deformation relationship of the spring 55. Finally, the load of the automobile 51 is added, and the calculated load of the automobile 51 is compared with the predetermined force applied by the frame fixing device 30. The measurement accuracy of the present invention can be calculated.

The first preferred embodiment of the present invention is an automobile 51 suitable for a flatbed truck. Through the two linear telescopic devices 33 on the gantry frame 31, the two rams 34 can be lowered to press the frame plate 53 of the automobile 51. The height position of the frame plate 53 and the frame 52 is fixed. Compared with the flatbed car, since the box car is provided with the car frame on the frame 52, damage may occur when the car box is pressed, so the other frame fixing device 30 is used to fix the height position of the frame 52, for example, The tension fixing bracket 35 used in the second preferred embodiment shown in FIG. 8 can be applied to a vehicle of a flatbed or a van.

Referring to the second preferred embodiment of the present invention shown in FIG. 5 to FIG. 8 , a magnetic plane 13 is formed on the surface of the ground 10 by fixing a steel plate or other metal plate having magnetic attraction. The frame fixing device 30 of the preferred embodiment is provided with four tension fixing brackets 35. Each tension fixing bracket 35 is provided with a base 36. Each base 36 is a housing, and an electromagnet structure 361 is disposed at the bottom of each base 36. A screw elevator 362 is coupled to the center of the top of the base 36, and a vertically disposed lifting screw 363 is screwed into each of the screw jacks 362. A circular turntable 364 is coupled to the top end of each lifting screw 363 in a concentric manner. A speed reducer 365 is fixed in the interior, and each of the speed reducers 365 is coupled to the screw lifter 362. A motor 366 is coupled to each of the speed reducers 365, and each of the speed reducers 365 drives the speed reducers 365 to drive the lift screws 363 in the screw lifters 362 to move up and down.

A lifting platform 367 is disposed in each of the lifting screws 363, and a rotating slot 3671 is formed in the bottom of each lifting platform 367. A shaft hole 3672 is disposed on the bottom surface of each lifting platform 367 corresponding to the center of each rotating platform 367. The hole 3672 communicates with each of the turntable slots 3671. The top end of each lift screw 363 passes upwardly through each of the shaft holes 3672, and the turntable 364 is disposed in each of the turntable grooves 3671 in a rotatable manner, on opposite sides of each of the lift platforms 367. A pin 3673 passes through and pivots two clamping hooks 3674 which respectively extend upward and inward, and each clamping hook 3674 is an L-shaped arm body and the end is located above each lifting platform 367, and is clamped at each clamping A hook 3675 is protruded downward from the end of the hook 3674.

Each clamping platform 367 is provided with a clamping head 368. A neck 3681 having a width wider than the top and the bottom is formed in the middle of each clamping head 368. Each neck 3681 is located between the ends of the two clamping hooks 3674. The bottom of each clamping head 368 extends toward the opposite sides of the two convex plates 3682, and a hook groove 3683 is respectively recessed on the top surfaces of the two convex plates 3682, and two clamping hooks 3674 of each tension fixing bracket 35 are provided with two claws 3675 The two hook grooves 3683 are embedded, and the gap between the bottom surface of each clamping head 368 and each lifting platform 367 is greater than the depth of each of the hook grooves 3683. When the clamping heads 368 are pulled up, they are passed through the two clamping hooks 3674. It is fixed in combination with each lifting platform 367. A stopper 3684 is extended upwardly on the top surface of each clamping head 368, and a slider 3685 is slidably disposed on the top surface of each clamping head 368 so as to be advanced and retractable toward the stopper 3684. Block 3685 is recessed toward the bottom of one side of each stop block 3684 to form a frame channel lower edge slot 3686.

When the four tension fixing brackets 35 of the frame fixing device 30 are used, they are arranged in a matrix arrangement under the frame 52 of the automobile 51, and are respectively positioned in front of the inside and the inside of the left and right wheels 54 to be tested. In the rear, each frame 52 is provided with two longitudinal frame channel 521 on the left and right sides, and each tension fixing bracket 35 is located between the magnetic attraction plane 13 and each frame channel steel 521, and each tension fixing bracket 35 is constructed by an electromagnet. The attraction 361 is fixed on the magnetic attraction plane 13, and the lifting platform 367 and the clamping head 368 are lifted and lowered to an appropriate height, and then the stoppers 3684 of the respective clamping heads 368 are abutted against the outer frame channels 521. Side, and the slider 3685 is clamped to the mating stop block 3684, so that the lower edge of each frame channel 521 is embedded in the frame channel lower edge slot 3686, and the four tensions can be used to fix the bracket. 35 fixes the height position of the frame 52 of the automobile 51.

When the frame fixing device 30 is used, the tension fixing brackets 35 are detached from the frames 52, so that when the clamping heads 368 are no longer pulled up and dropped, the hooks 3675 of the two clamping hooks 3674 are respectively separated. Each of the hook grooves 3683, at this time, the two clamping hooks 3674 can be turned outwards, so that the clamping heads 368 can be separated from the lifting platforms 367 into a two-part configuration. Thus, the next time the frame fixing device 30 is set. During the installation, the two parts of each tension fixing bracket 35 can be conveniently moved into the space below the narrow space 51, and then assembled and used. The rest of the configuration of the second preferred embodiment is the same as that described in the first preferred embodiment.

Each of the tension fixing brackets 35 of the present invention has a magnet structure 361 provided at the bottom of each base 36 as a suction structure, and is magnetically attracted and fixed to the magnetic attraction plane 13, and the third preferred embodiment of the present invention as shown in FIG. For example, the tension fixing bracket 35 is formed with a balloon structure 369 as a suction structure at the bottom of the base 36, and a negative pressure groove 3691 is formed at the bottom of each airbag structure 369, and each negative pressure groove 3691 is a groove with an opening facing downward, and An exhaust pipe 3692 is disposed around each of the airbag structures 369. The inner ends of the exhaust pipes 3692 communicate with the negative pressure grooves 3691, and the outer ends of the respective exhaust pipes 3692 are connected to a negative pressure source, such as an air pump. When the tension fixing bracket 35 of the third preferred embodiment is fixed on the ground 10, the bottom airbag structure 369 is covered and attracted to be fixed on the magnetic plane 13, and the magnetic plane 13 can be generally not magnetically attractive. In the plane, the airtight effect can be achieved as long as the airbag structure 369 is placed over it.

In addition to the foregoing second preferred embodiment or the third preferred embodiment, the second embodiment of the tension fixing bracket 35 is coupled to the plane of the magnetic plane 13 of the ground 10 by magnetic attraction or vacuum suction. In addition, in the fourth preferred embodiment of the present invention, as shown in FIG. 10, a concave track pit 14 is provided on the front and rear sides of the mounting pit 11 provided on the ground 10, and the track pit 14 is located in the vehicle to be tested. Between the two wheels 54 of the 51, the frame fixing device 30 of the fourth preferred embodiment combines four double-coordinate moving platforms 15 in a matrix arrangement at the bottom of the track pit 14, and the double-coordinate moving platform 15 is A longitudinal dovetail rail 151 is fixed to the bottom of the track pit 14 , and a longitudinal moving platform 152 is coupled to each longitudinal dovetail rail 151 in a front-rear sliding manner, and a lateral dovetail guide 1521 is disposed on each longitudinal moving platform 152 for each lateral dovetail. A lateral movement platform 153 is coupled to the guide rail 1521.

The frame fixing device 30 of the fourth preferred embodiment is respectively fixed with a tension fixing bracket 35 according to the second or third preferred embodiment on the lateral moving platform 153 of the four double-coordinate moving platform 15, respectively. The tension fixing bracket 35 is not provided with the electromagnet structure 361 or the airbag structure 369, and is directly fixed on the lateral moving platform 153 by the base 36. The rest of the tension fixing brackets 35 are compared with the second or third. The tension fixing bracket 35 described in the preferred embodiment is the same.

The fourth preferred embodiment of the present invention is adapted to the size of the frame 52 of the different automobile 51, and the respective tension fixing brackets 35 on the right side are adjusted and moved to the right side of the frame channel steel 521, and will be located on the left side. Each tension fixing bracket 35 is adjusted to move directly under the frame channel 521 on the left side, and then the height of the lifting platform 367 and the clamping head 368 of each tension fixing bracket 35 is raised and lowered, and the top of each clamping head 368 is clamped and fixed. Each frame channel steel 521 fixes the height position of the frame 52. The rest of the configuration of the fourth preferred embodiment is the same as the other preferred embodiments described above.

In addition to the foregoing fourth preferred embodiment, the frame fixing device 30 is provided with a tension fixing bracket 35 on each of the lateral moving platforms 153 of the four double-coordinate moving platforms 15, and may also be in each lateral moving platform 153. The other positions are combined to fix the height of the frame 52.

For example, in the fifth preferred embodiment shown in FIG. 11 and FIG. 12, the frame fixing device 30 is further combined with a pivoting seat 37 on the lateral moving platform 153 of each double-coordinate moving platform 15, and the pivoting seat 37 is pivoted at each pivoting seat. The screw 371 is connected to the lower screw 371, and an internal threaded rod 372 is disposed. The inner threaded rod 372 extends axially through an inner screw hole 373, and each lower screw 371 is screwed into the bottom of the inner screw hole 373. The top of the inner screw hole 373 is screwed with an upper screw 374, and a steel hook 38 is joined to the top end of each upper screw 374.

When the frame fixing device 30 of the fifth preferred embodiment is used, the position of each pivoting seat 37 is adjusted by each double coordinate moving platform 15, and each pivoting seat 37 is moved to the lower side of the corresponding frame channel 521. Then, by adjusting the depth of the lower threaded rod 371 and the upper screw 374 to the inner threaded rod 372, the height of each steel hook 38 relative to each pivot joint 37 can be changed, so that the height position of each steel hook 38 can be hooked. To the bottom edge of the frame channel steel 521. After the adjustment operation is completed, the positions of the four steel hooks 38 are swung around the pivot joints 37, so that the steel hooks 38 are hooked to the bottom edge of the frame channel 521 to fix the height of the frame 52. position.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention, and other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.

10‧‧‧ Ground
11‧‧‧Installation pit
111‧‧‧ side pit
12‧‧‧ top board
13‧‧‧Magnetic plane
14‧‧‧track pit
15‧‧‧Double-coordinate mobile platform
151‧‧‧Longitudinal dovetail guide
152‧‧‧Longitudinal mobile platform
1521‧‧‧Horizontal dovetail guide
153‧‧‧Horizontal mobile platform
20‧‧‧force device
21‧‧‧Base
211‧‧‧ jack track
22‧‧‧ jack slider
221‧‧‧Drive screw holes
23‧‧‧ bottom screw seat
231‧‧‧ bottom screw bearing
24‧‧‧ bottom screw
25‧‧‧Transmission
26‧‧‧Motor
27‧‧‧ jack
271‧‧‧ Pressurized oil pipe
28‧‧‧Hydraulic pressure sensor
30‧‧‧frame fixing device
31‧‧‧ gantry crane frame
311‧‧‧Top beam
32‧‧‧ movable head holder
33‧‧‧Linear telescopic device
34‧‧‧Indenter
341‧‧‧ ball head
35‧‧‧Rally fixing bracket
36‧‧‧Base
361‧‧‧Electromagnetic structure
362‧‧‧ screw lift
363‧‧‧ lifting screw
364‧‧‧ Turntable
365‧‧‧Reducer
366‧‧‧Motor
367‧‧‧ Lifting platform
3671‧‧‧ Turntable slot
3672‧‧‧Axis hole
3673‧‧ ‧ pin
3674‧‧‧Clamping hook
3675‧‧‧ claws
368‧‧‧Clamping head
3681‧‧‧ neck
3682‧‧‧ convex plate
3683‧‧‧ hook groove
3684‧‧‧stop block
3685‧‧‧Slider
3686‧‧‧The lower edge of the frame channel
369‧‧‧Airbag construction
3691‧‧‧ Negative pressure tank
3692‧‧‧Exhaust pipe
37‧‧‧ pivoting seat
371‧‧‧ lower screw
372‧‧‧Threaded rod
373‧‧‧Inner hole
374‧‧‧Upper screw
38‧‧‧Steel hook
40‧‧‧ Positioning device
41‧‧‧Steel cable
42‧‧‧hook
50‧‧‧ deformation sensor
51‧‧‧Car
52‧‧‧ frame
521‧‧‧Frame channel steel
53‧‧‧ frame slab
54‧‧‧ Wheels
55‧‧‧ Spring
60‧‧‧Laser ranging sensor group
61‧‧‧Mirror
62‧‧‧Reflective laser range sensor
63‧‧‧Mirror
64‧‧‧Ray side distance measuring sensor

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevational view of a first preferred embodiment of the present invention. Figure 2 is a schematic front view of a first preferred embodiment of the present invention. Figure 3 is a plan view showing the urging device of the first preferred embodiment of the present invention. 4 is a side cross-sectional view showing the urging device of the first preferred embodiment of the present invention disposed in a side pit. Figure 5 is a schematic view showing the implementation of the first preferred embodiment of the present invention. Figure 6 is a side elevational view of a second preferred embodiment of the present invention. Figure 7 is a front elevational view of a second preferred embodiment of the present invention. Figure 8 is a partial cross-sectional view showing the tension fixing bracket of the second preferred embodiment of the present invention. Figure 9 is a partial cross-sectional view showing a tension fixing bracket according to a third preferred embodiment of the present invention. Figure 10 is a front elevational view of a fourth preferred embodiment of the present invention. Figure 11 is a partial cross-sectional view showing the frame fixing device of the fifth preferred embodiment of the present invention. Figure 12 is a front elevational view of a fifth preferred embodiment of the present invention.

Claims (10)

A measuring system for calibrating a car spring parameter for measuring a spring of a vehicle to be tested between a frame and a wheel, and comprising: a ground on which a mounting pit is recessed, the mounting pit is along the left and right a long strip-shaped pit extending in a direction, two top plates are disposed across the left and right positions of the mounting pit top; two force applying devices are respectively disposed on the left and right sides of the mounting pit, and the force applying devices are installed therein A base is arranged at the bottom of the pit, and a jack rail is arranged in the middle of the base. A jack slider is arranged on each jack rail, and a driving screw hole is transversely penetrated in the middle of each jack slider, corresponding to the left and right sides of each jack rail. Combining two bottom screw seats on each base, inserting a bottom screw bearing in each bottom screw seat, and inserting a bottom screw between the two bottom screw bearings, each bottom screw threading through each driving screw hole on each base In combination with a transmission, each transmission is coupled to each of the bottom screws, and a motor is coupled and coupled to each of the transmissions, and a jack is fixed on each of the jack sliders. The jack is connected to a pressurized oil pipe and connected to each of the pressurized oil pipes. a pressure sensor; a frame fixing device disposed on the ground and located around the installation pit for fixing a height position of the frame of the vehicle to be tested; and one or more deformation sensors, each deformation sensor being installed at the to-be-tested The spring or spring of the car senses the deformation of each spring. A measuring system for calibrating an automobile spring parameter according to claim 1, wherein the frame fixing device is coupled with a gantry frame on the ground, the gantry frame is above the mounting pit, and a top of the gantry frame is provided with a a top beam is coupled to a movable head support at a bottom portion of the top beam in a movable manner to the left and right sides, and two vertically disposed linear expansion devices are coupled to the right and left sides of the movable head support The bottom end is combined with an indenter. A measuring system for calibrating an automobile spring parameter according to claim 1, wherein a plane is formed on a surface of the ground, the frame fixing device comprises four tension fixing brackets, and each tension fixing bracket is provided with a base at each base The bottom is provided with a suction structure, wherein each attraction structure can attract and fix the base to the plane, a screw elevator is coupled to the top of each base, and a vertical lifting screw is screwed in each screw lift to fix a deceleration in each base. Each of the reducers is coupled to each of the screw jacks, and a motor is coupled to each of the speed reducers, and each of the speed reducers drives each of the speed reducers to rotate and lift, and a lifting platform is coupled to each of the lifting platforms at each of the lifting platforms. a clamping head is arranged, a stopper is arranged upwardly on the top surface of each clamping head, and a slider is slid on the top surface of each clamping head so as to advance and retreat toward the stopping block, The slider is recessed toward the bottom of one side of each of the stoppers to form a frame groove lower edge slot. A measuring system for calibrating automotive spring parameters of claim 3, wherein said plane is a magnetic plane, and said attracting formation is an electromagnet configuration. The measuring system for calibrating the automobile spring parameter of claim 3, wherein the suction structure is an airbag structure, and a negative pressure groove is formed at the bottom of each airbag structure, and each negative pressure groove is a groove with an opening facing downward, in each airbag structure An exhaust pipe is disposed around the inner end of each of the exhaust pipes and the negative pressure grooves. A measuring system for calibrating automotive spring parameters according to claim 3 or 4 or 5, wherein a turntable is disposed at a top end of each of the lifting screws, a turntable groove is formed in each of the lifting platforms, and a center of each turntable groove is a shaft hole is bored, and the top end of each lifting screw passes upwardly through each shaft hole to set each turntable in a rotatable manner on each turntable slot; on opposite sides of each lifting platform, two upward and inward respectively An extended clamping hook, a hook is protruded downwardly at an end of each clamping hook, a neck is formed in the middle of each clamping head, and each neck is located between the ends of the two clamping hooks, Two convex plates are extended toward the opposite sides of the bottom of each clamping head, and a hook groove is respectively recessed on the top surfaces of the two convex plates, and two hook claws of the two clamping hooks are embedded in the two hook grooves, and the clamping heads of the clamping heads are respectively The gap between the bottom surface and each lifting platform is greater than the depth of each of the hooking grooves. When the clamping heads are pulled up, they are combined with the lifting platforms through the two clamping hooks. A measuring system for calibrating a car spring parameter according to claim 1, wherein a concave track pit is provided on the front and rear sides of the mounting pit on the ground, and the frame fixing device is in a matrix at the bottom of the track pit. The arrangement is combined with four double-coordinate mobile platforms. Each of the two-coordinate mobile platforms is fixed with a longitudinal dovetail guide rail at the bottom of the track pit, and a longitudinal moving platform is combined on each longitudinal dovetail guide rail in a front-back sliding manner, and is moved longitudinally. The platform is provided with a lateral dovetail guide rail, and a lateral moving platform is coupled to each lateral dovetail guide rail; the frame fixing device comprises four tension fixing brackets, and each tension fixing bracket fixes a base on each lateral moving platform, and the base is fixed at each base The top is combined with a screw jack, a vertical lifting screw is screwed into each screw elevator, and a speed reducer is fixed in each base, and each speed reducer is connected with each screw lifter, and a motor is combined with each motor in each speed reducer, and driven by each motor Each reducer drives each lifting screw to lift and lower, and a lifting platform is coupled to the top end of each lifting screw, and one lifting platform is provided on each lifting platform. a stopper is arranged on the top surface of each clamping head, and a sliding block is arranged on the top surface of each clamping head so as to be able to advance and retreat toward the stopping block, and the slider is oriented at each slider The bottom of one side of each stop block is concavely formed to form a lower groove of the frame channel steel. The measuring system for calibrating the automobile spring parameter of claim 7, wherein a turntable is disposed at a top end of each of the lifting screws, a turntable groove is formed in each of the lifting platforms, and an axis is disposed downward in a center of each of the rotating slots The holes, the top ends of the lifting screws pass up through the respective shaft holes, and the respective turntables are disposed in the respective turntable slots in a rotatable manner. A measuring system for calibrating a car spring parameter according to claim 1, wherein a concave track pit is provided on the front and rear sides of the mounting pit on the ground, and the frame fixing device is in a matrix at the bottom of the track pit. The arrangement is combined with four double-coordinate mobile platforms. Each of the two-coordinate mobile platforms is fixed with a longitudinal dovetail guide rail at the bottom of the track pit, and a longitudinal moving platform is combined on each longitudinal dovetail guide rail in a front-back sliding manner, and is moved longitudinally. The platform is provided with a lateral dovetail guide rail, and a lateral moving platform is coupled to each lateral dovetail rail. A pivoting seat is coupled to each lateral moving platform, and a screw is pivotally connected to each pivoting joint, and each lower screw is screwed into an internal thread. The rod is screwed to the top of each of the internally threaded rods, and a steel hook is coupled to the top end of each of the upper screws. A measuring system for calibrating an automobile spring parameter according to any one of claims 1 to 5, wherein the positioning device is a hoist and extends outwardly on a ground in the middle of the rear side of the mounting pit. A cable, which is attached to a hook at the outer end of the cable.