CN106908026A - Driving lifting rope device for detecting rock - Google Patents

Abstract

A driving suspension rope shaking detection device, including a motor, a suspension rope wound on the motor, a PVC pipe is set on the drooping suspension rope, the PVC pipe is connected to the motor, a connecting plate is installed on the motor, and two Drawstring displacement sensor for measuring displacement, the connecting plate is used to install the lower surface of the drawstring displacement sensor and the connection point of the PVC pipe and the motor are located on the same plane, and one end of the drawstring displacement sensor is fixedly connected to the PVC pipe through the drawstring , the other end of which is connected to a signal transmission line that transmits a detection signal. The projection lines of the two pull ropes on the lower surface of the connecting plate are orthogonal when the hanging rope with the PVC pipe is vertical. The pull rope displacement sensor detects the shaking of the PVC pipe. The displacement to detect the sway angle of the sling. The invention has the advantages of simple structure, convenient operation, high precision, high sensitivity and timely detection.

Description

Driving rope shaking detection device

technical field

The invention relates to a shaking detection device for a driving suspension rope.

technical background

With the development of economy and technology, the application of cranes as a kind of hoisting and transportation equipment in various engineering projects is becoming more and more extensive and important. During the driving operation, the suspension rope is prone to shaking, which may damage the surrounding personnel and equipment.

At present, the shaking problem of driving mainly relies on the naked eyes and operating experience of the operator to identify and reduce the shaking range. There are large uncertainties in the observation of shaking with the naked eye, and it is impossible to accurately identify and describe small shaking. This has just brought certain potential safety hazard, and even can cause serious safety accident.

There are many ways to measure the sway deflection angle, mainly measuring its verticality. For example, the patent No. ZL200910102367.3 "Dynamic Measuring Device and Method for Measuring the Verticality Deviation of Crane Hook" mainly uses the horizontal measurement sensor to detect the hook in real time, and transmits the model through the wireless device. Processing agency for analysis. The principle of this method is to realize the dynamic detection of the swaying of the suspension rope, but its specific measuring device is only a simplified ideal device. Similarly, in the "A Method for Detection of Crane Load Swing Angle" disclosed in Patent No. ZL201410118160.6, the detection method is to install a wireless network fixed node on the crane body, install a wireless swing node on the hook and then based on the received signal strength Index RSSI ranging technology realizes spatial positioning of the hook, thereby measuring the swing angle. The data processing of this scheme is relatively complicated, and the cost of its practical application is relatively high. The "Laser Measuring Device" disclosed by the patent No. ZL200720086087.4 uses a laser plumb gauge to measure the verticality of a fixed object, fixes it on the upper end of the vertical object, and calculates the displacement deviation of the object by receiving the signal. Perpendicularity deviation. But laser plummets cannot measure the vertical deviation of dynamic objects.

Therefore, in actual operation and detection, a device with strong applicability is needed to monitor the shaking of the driving sling.

Contents of the invention

The purpose of the present invention is to provide a driving suspension rope shaking detection device with simple structure, convenient installation, simple operation and timely detection.

The technical scheme adopted in the present invention is:

A driving suspension rope shaking detection device, including a motor and a suspension rope wound on the motor, is characterized in that: the drooping suspension rope is covered with a PVC pipe, the PVC pipe is connected to the motor, and a connecting plate is installed on the motor. Two pull-rope displacement sensors for measuring displacement are installed, and the lower surface of the connection plate for installing the pull-rope displacement sensor is located on the same plane as the connection point of the PVC pipe and the motor, and one end of the pull-rope displacement sensor is pulled The rope is fixedly connected to the PVC pipe, and the other end is connected to the signal transmission line that transmits the detection signal. When the hanging rope with the PVC pipe is vertical, the projection lines on the lower surface of the connecting plate are orthogonal, and the rope-type displacement The sensor detects the sway angle of the sling by detecting the displacement of the swaying PVC pipe. The invention detects the swaying angle of the suspension rope by detecting the displacement of the PVC pipe on the suspension rope, has a simple structure and is convenient to operate, and adopts a pull rope type displacement sensor to measure, and has high precision, high sensitivity and timely detection.

Furthermore, the drawstring displacement sensor is installed on the connecting plate through a clamping device, so that the drawstring displacement sensor is convenient and quick to disassemble.

Further, the clamping device includes a lower half hoop plate fixed on the connecting plate, one end of the lower half hoop plate is hinged to the upper half hoop plate, and the other end is connected by a thread pair and locked and fixed by a cam wrench. The thread pair can adjust the size of the opening between the upper half hoop plate and the lower half hoop plate, which is convenient for installing the pull rope displacement sensor.

Further, the thread pair includes a threaded sleeve arranged on the lower half of the hoop plate and a screw threaded on the upper half of the hoop plate, the screw rod and the threaded sleeve are threadedly engaged, and the upper half of the hoop plate and the lower half of the hoop plate are adjusted by rotating the screw rod opening size.

Further, the cam wrench can freely rotate around the first pin shaft and is connected to the screw rod through the first pin shaft.

Further, the upper half hoop plate is provided with an upper wing plate for threading the screw rod, and the lower half hoop plate is provided with a lower wing plate for setting a threaded sleeve.

Further, the threaded sleeve can freely rotate around the second pin shaft and is connected with the lower wing plate through the second pin shaft.

Further, the PVC pipe is connected to the motor through a connecting rope.

The beneficial effects of the present invention are:

1. The whole device has a simple structure and is easy to install.

2. The rope-drawn displacement sensor has high precision and high sensitivity, and can detect in time.

3. The chuck is easy to assemble and disassemble, and the operation is simple.

Description of drawings

Figure 1 is an overall schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the structure of the measuring part of the present invention.

Fig. 3 is a structural schematic diagram of the sensor and its fixing method of the present invention.

Fig. 4 is a schematic structural view of the clamping device of the present invention.

Fig. 5 is a schematic diagram of the signal processing system of the present invention.

Fig. 6 is a simplified schematic diagram of the measurement principle of the present invention.

detailed description

The present invention will be further described below in conjunction with specific examples, but the present invention is not limited to these specific implementations. Those skilled in the art will realize that the present invention covers all alternatives, modifications and equivalents as may be included within the scope of the claims.

As shown in Figures 1 and 2, a driving suspension rope shaking detection device includes a motor 1, a suspension rope 2, a connecting rope 3, a PVC pipe 4, a clamping device 5, a signal transmission line 6, and a pull-rope displacement sensor 7. plate 8. Suspension rope 2 is wound on the traveling motor 1, and PVC pipe 4 is enclosed within on the suspension rope of a drooping, is connected with motor 1 by connecting rope 3. The connecting plate 8 is fixedly connected with the motor 1 through the bolt 9 in FIG. 3 . The clamping device 5 is fixedly connected with the connecting plate 8 through the bolt 10 shown in FIG. 3 . Both drawstring displacement sensors 7 are fixedly connected to the clamping device 5 and serve as displacement measurement components. The connecting plate 8 is used to install the lower surface of the pull rope type displacement sensor 7 on the same plane as the connection point between the PVC pipe 4 and the motor 1, and one end of the pull rope type displacement sensor 7 is fixedly connected to the PVC pipe 4 by a stay rope. The other end is connected with the signal transmission line 6 that transmits the detection signal. When the hanging rope 2 with the PVC pipe 4 is vertical, the projection lines on the lower surface of the connecting plate 8 of the two stay ropes are orthogonal, and the stay rope displacement sensor 7 passes through Detect the displacement of the shaking PVC pipe 4 to detect the shaking angle of the suspension rope 2. In the present invention, along with the shaking of the sling, the PVC pipe 4 also shakes, and the pull rope type displacement sensor 7 measures its real-time displacement and inputs it into the signal processing system (as shown in Figure 5), and the signal input system outputs the displacement-time curve, the deflection angle - Time curve, the sway angle of the suspension rope 2 is detected by detecting the displacement of the PVC pipe 4 on the suspension rope 2, which has a simple structure and is easy to operate. timely.

As shown in FIG. 4 , the clamping device 5 includes a lower half hoop 15 , an upper half hoop 12 , a threaded sleeve 14 , a screw 13 , and a cam wrench 11 . The lower half hoop plate 15 is fixedly connected with the connecting plate by bolts, and the upper half hoop plate 12 and one end of the lower half hoop plate 15 are connected by a pin shaft and can rotate freely. The other end of the upper half hoop 12 has an upper wing, and the other end of the lower half hoop 15 has a lower wing. The threaded sleeve 14 is arranged on the lower wing plate of the lower hoop plate 15; the screw rod 13 is passed through the upper wing plate of the upper half hoop plate 12, the screw rod 13 and the threaded sleeve 14 form a thread pair through thread engagement, and the screw rod 13 is rotated to adjust the upper half plate. The opening size of the hoop plate 12 and the lower half hoop plate 15; the cam wrench 11 is connected with the screw rod 13 through the first pin shaft, and the cam wrench 11 can freely rotate around the first pin shaft for locking the clamping device 5 . The threaded sleeve 14 is connected with the lower wing plate through the second pin shaft, and the threaded sleeve 14 can freely rotate around the second pin shaft.

Measuring principle of the present invention is as follows:

As shown in Figure 6, point A represents a pull-wire displacement sensor, point B represents another pull-wire displacement sensor, point O represents the connection point between the PVC pipe and the motor, and point C is the PVC pipe. Among them, AO is perpendicular to BO, OD represents the vertical direction, and the three lines are perpendicular to each other. The lengths of OA, OB and OC are fixed as s1, s3 and s2 respectively. AC, BC are the measuring lengths of the pull-type displacement sensor and the PVC pipe, which are recorded as L1, L2.

The lengths of point C projected on OA, OB, and OD are respectively recorded as k1, k2, and k3.

k3＝s2×cos∠c (5)

s2 ² =k1 ² +k2 ² +k3 ² (6)

(3), (4), formula (5) is substituted into (6) and solved:

The shaking angle of the vertical suspension rope 2 can be obtained from formula (7).

Claims (8)

1. A driving suspension rope shaking detection device, comprising a motor, a suspension rope wound on the motor, characterized in that: the drooping suspension rope is covered with a PVC pipe, the PVC pipe is connected to the motor, and a connecting plate is installed on the motor, and the connection plate is connected to the motor. Two drawstring displacement sensors for measuring displacement are installed on the board, and the lower surface of the connection plate for installing the drawstring displacement sensor is located on the same plane as the connection point between the PVC pipe and the motor. One end of the drawstring displacement sensor is The pull rope is fixedly connected to the PVC pipe, and the other end is connected to the signal transmission line that transmits the detection signal. When the hanging rope with the PVC pipe is vertical, the projection lines on the lower surface of the connecting plate are orthogonal. The pull rope The type displacement sensor detects the sway angle of the sling by detecting the displacement of the swaying PVC pipe. 2. A driving suspension rope shaking detection device according to claim 1, characterized in that: the pull-rope displacement sensor is mounted on the connecting plate through a clamping device. 3. A driving rope shaking detection device as claimed in claim 2, characterized in that: said clamping device includes a lower half hoop plate fixed on the connecting plate, one end of the lower half hoop plate and the upper half hoop plate Hinged, the other end is connected by a thread pair and locked and fixed by a cam wrench. 4. A driving rope shaking detection device as claimed in claim 3, characterized in that: the thread pair includes a threaded sleeve arranged on the lower half hoop plate and a screw threaded on the upper half hoop plate, the screw rod and the upper half hoop plate The threaded sleeve is engaged by threads. 5 . The shaking detection device of a driving suspension rope according to claim 3 , wherein the cam wrench can freely rotate around the first pin shaft and is connected to the screw rod through the first pin shaft. 5 . 6. A driving rope shaking detection device as claimed in claim 3, characterized in that: the upper half hoop plate is provided with an upper wing plate for threading a screw, and the lower half hoop plate is provided with a Set the lower flange of the threaded sleeve. 7. A shaking detection device for a driving suspension rope according to claim 6, wherein the threaded sleeve can freely rotate around the second pin shaft and is connected to the lower wing plate through the second pin shaft. 8 . The sway detection device for a driving suspension rope according to claim 1 , wherein the PVC pipe is connected to the motor through a connecting rope. 9 .