CN107817119A - Motor turning part compressive stroke testing stand and its detection method - Google Patents

Abstract

The invention discloses a comprehensive impact test bench for steering parts of an automobile and a detection method thereof. The test bench includes a main body support structure, a pendulum fixture, a drop hammer fixture, a pendulum assembly, a drop hammer assembly, a pendulum uncoupling device, and a drop hammer uncoupling device , The first lift, the second lift, locking device, drop hammer anti-shock device. The present invention can carry out pendulum impact test and drop weight impact test. The comprehensive impact test bench of automobile steering parts utilizes the free fall movement of the pendulum assembly and the drop weight assembly to act on the test sample, and can directly perform impact resistance on the test sample. load test. Through the elevator, the remote control is realized, which greatly improves the safety, and through the feedback of the sensor, the lifting height of the falling weight and the lifting angle of the pendulum are more accurate, so that the impact load resistance of the test sample can be easily detected. , the detection result is more accurate.

Description

Comprehensive impact test bench for automobile steering parts and its detection method

technical field

The invention relates to the technical field of automobile component detection, in particular to a comprehensive impact test bench for automobile steering components and a detection method thereof.

Background technique

At present, in the field of automobiles, with the continuous development of society and the continuous advancement of science and technology, there are more and more types of automobiles, and the use of EPS (electric power steering system) is gradually increasing. The worm gear and rack and pinion in its structure The mechanism will be subject to a certain impact load during use. Since there is no automatic control equipment for detecting the impact resistance of the worm gear and rack and pinion in the prior art, and the material properties of the worm gear and rack and pinion are generally used in the prior art to judge their impact load resistance or manual adjustment Although the impact angle of the pendulum can meet the application requirements to a certain extent, there is still the problem of large judgment errors.

Contents of the invention

One of the purposes of the present invention is to provide a comprehensive impact test bench for automobile steering parts with stable structure, automatic control, easy operation, complete functions and good performance; another purpose of the present invention is to provide a comprehensive impact test bench using the aforementioned A fast and accurate detection method for automotive steering components. The automobile steering component comprehensive impact test bench and its detection method detect the impact load resistance of workpieces through two different forms of pendulum and drop weight.

In order to achieve the above object, the present invention provides the following technical solutions:

A comprehensive impact test bench for automobile steering parts, which includes a pendulum assembly for performing a pendulum impact test and a drop weight assembly for a drop weight impact test;

The pendulum assembly includes a pendulum impact support frame; a pendulum fixture for clamping the test sample is placed horizontally on the lower front side of the pendulum impact support frame, and a first pulley device and a first elevator are installed on the rear side; After the first flexible rope bypasses the first pulley device, one end is connected with the output shaft of the first elevator, and the other end is connected with the pendulum uncoupling device; the pendulum uncoupling device is connected with the pendulum impact supporting frame The front side is connected to the pendulum assembly for exerting a swing impact on the test sample on the pendulum fixture; the two sides of the pendulum assembly are equipped with locking devices that can lock the pendulum assembly;

The drop weight assembly includes a drop weight impact support frame; the lower part of the drop weight impact support frame is vertically placed with a drop weight fixture for clamping the test sample, and the upper part is equipped with a second pulley device and a second elevator; the second After the flexible rope bypasses the second pulley device, one end is connected to the output shaft of the second elevator, and the other end is connected to the drop hammer release device; the drop hammer release device is arranged on the upper part of the drop hammer impact support frame and is used for A drop weight assembly that applies a vertical impact to the test sample on the drop weight fixture is connected; a drop weight anti-impact device is installed near the drop weight fixture.

Preferably, the pendulum impact support frame includes a first bottom platform, a first bracket and a second bracket respectively fixed on the front side and rear side of the top of the first bottom platform;

The first pulley device is installed on the top of the first bracket, and the first elevator is installed on the top of the first bracket;

The pendulum assembly is installed on the second bracket, the pendulum clamp is installed horizontally on the top surface of the first bottom platform and is located below the second bracket, and the locking device is installed on the second bracket. on the top surface of the first bottom platform and close to the pendulum assembly.

Preferably, the pendulum assembly includes:

a support block, which is fixedly connected to the top of the second bracket;

The swing rod is located between the top of the second support and the top surface of the first bottom platform, and one end is hinged with the support block, and the other end is hinged with the counterweight; The impact block of the test sample on the pendulum fixture;

An angle encoder, which is connected with the second bracket, is used to measure the swing angle of the swing rod.

Preferably, the first pulley device includes two first bearing seats mounted on the top of the first bracket, a first intermediate shaft rotatably connected between the first two bearing seats, and assembled on the first a first pulley on the intermediate shaft and rotating with the first intermediate shaft;

the first flexible rope is looped over the first pulley;

The pendulum uncoupling device includes:

a first connector connected to an end of the first flexible cord;

the first cylinder, the bottom of the cylinder barrel is hinged to one end of the first connecting frame;

a first fixing frame, one end of which is fixedly connected to the other end of the first connecting frame;

A first rotating rod, one end of which is hinged with the piston rod in the first cylinder, and the other end is hinged with the first fixed frame;

The second cylinder, its cylinder barrel is fixedly connected with the other end of the first fixed frame; the piston rod in the second cylinder is connected with a first locking pin, and the first locking pin is connected with the first rotating The rod cooperates to control the swing of the swing rod.

Preferably, the pendulum clamp includes a first T-slot bar and a first clamp locking block fixed on the top surface of the first bottom platform; both ends of the first T-slot bar are provided with There is a first support block, and the test sample is placed between the two first support blocks; the first clamp locking block is close to the tail of the first T-shaped groove bar, and is used to clamp the test sample;

The locking device located on both sides of the pendulum assembly has the same structure, and the locking device includes a base fixed on the top surface of the first bottom platform and close to the counterweight, the bottom of the cylinder and the The third cylinder hinged by the base, the locking top plate hinged with the piston rod in the third cylinder, and the damping plate connected to the locking top plate; the damping plates in the two locking devices are opposite to each other, and in the third cylinder The counterweight can be clamped or loosened under the driving.

Preferably, the drop weight impact support frame includes a second bottom platform, and a third bracket fixed on the top surface of the second bottom platform;

The second pulley device is installed on the top of the third bracket, and the second elevator is installed on the top of the third bracket;

The drop weight assembly and the drop weight clamp are installed on the same side of the third bracket, and the drop weight clamp is located at the lower part of the third bracket;

The drop weight anti-shock device is installed on the top surface of the second bottom platform and is close to the drop weight clamp.

Preferably, the drop hammer assembly includes:

a bottom plate fixedly connected to the top surface of the second bottom platform;

a fixing plate connected to the third bracket;

a guide post vertically connected between the base plate and the fixed plate;

a guide plate mounted on the guide post in a manner to slide along said guide post;

a counterweight plate mounted on said guide plate;

An impact block, fixed on the guide plate, is used to impact the test sample on the drop weight fixture.

Preferably, the second pulley device includes two second bearing housings installed on the top of the third bracket, a second intermediate shaft rotatably connected between the second bearing housings, and assembled in the second middle a second pulley on the shaft and rotating with the second intermediate shaft;

said second flexible rope is looped over said second pulley;

The drop hammer decoupling device includes:

a second connector connected to the end of the second flexible cord;

The fourth cylinder, the bottom of the cylinder barrel is hinged to one end of the second connecting frame;

a second fixing frame, one end of which is fixedly connected to the other end of the second connecting frame;

A second rotating rod, one end of which is hinged with the piston rod in the fourth cylinder, and the other end is hinged with the second fixed frame;

The fifth cylinder, whose cylinder barrel is fixedly connected with the other end of the second fixed frame; the piston rod in the fifth cylinder is connected with a second locking pin, and the second locking pin is connected with the second rotating A rod cooperates to control the sliding of the guide plate.

Preferably, the drop weight clamp includes a second T-slot bar fixed on the third bracket and a second clamp locking block; both ends of the second T-slot bar are provided with second supports block, used to place the test sample between the two second support blocks; the second clamp locking block is close to the tail of the second T-shaped groove bar, and is used to clamp the test sample;

The falling weight anti-shock device includes a sixth cylinder whose bottom of the cylinder is fixed on the top surface of the second bottom platform and close to the falling weight fixture, and the piston rod in the sixth cylinder is connected with the guide plate Contact damping block.

The test method of the above comprehensive impact test bench for steering components of automobiles is as follows:

1. Pendulum impact test

1) Clamp the test sample on the pendulum fixture, and install the sensor at the position of the test sample to be impacted;

2) Connect the pendulum assembly with the pendulum uncoupling device through the connecting hook;

3) using the first elevator to lift the pendulum assembly to a certain angle;

4) Start the test. After the test has passed the set delay time, the test action is completed. At the same time, the data generated by the sensor is collected and processed through the acquisition board, and the curve of impact force and time is drawn;

2. Drop hammer impact test

1) Clamp the test sample on the drop hammer fixture, and install the sensor at the position of the test sample to be impacted;

2) Connect the drop hammer assembly with the drop hammer decoupling device through the connecting hook;

3) Use the second elevator to lift the drop hammer assembly to a certain height;

4) Start the test, complete the test action after the set delay time, and at the same time collect and process the data generated by the sensor through the acquisition board, and draw the curve of impact force and time.

The automobile steering part comprehensive impact test bench and detection method provided by the invention can carry out pendulum impact test and drop weight impact test. The comprehensive impact test bench for automobile steering parts utilizes the free fall movement of the pendulum assembly and the drop weight assembly to act on the test sample, and can directly perform the impact load test on the test sample. Through the elevator, the remote control is realized, which greatly improves the safety, and through the feedback of the sensor, the lifting height of the falling weight and the lifting angle of the pendulum are more accurate, so that the impact load resistance of the test sample can be easily detected. , the detection result is more accurate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings that are required in the embodiments. Obviously, the accompanying drawings in the following description are only described in the present invention For some embodiments of the present invention, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is the axonometric view of the automobile steering component comprehensive impact test bench provided by the embodiment of the present invention;

Fig. 2 is the left side view of the automobile steering component comprehensive impact test bench provided by the embodiment of the present invention;

3 is an axonometric view of the main support structure in the comprehensive impact test bench for automobile steering components provided by the embodiment of the present invention;

Fig. 4 is the structural diagram of the pulley device in the comprehensive impact test bench for automobile steering parts provided by the embodiment of the present invention;

5 is a structural diagram of the pendulum assembly in the comprehensive impact test bench for automobile steering components provided by the embodiment of the present invention;

Fig. 6 is a structural diagram of the drop weight assembly in the comprehensive impact test bench for automobile steering components provided by the embodiment of the present invention;

Fig. 7 is a structural diagram of the pendulum uncoupling device and the drop weight uncoupling device in the comprehensive impact test bench for automobile steering components provided by the embodiment of the present invention;

Fig. 8 is a structural diagram of the drop weight assembly in the comprehensive impact test bench for automobile steering components provided by the embodiment of the present invention;

9 is a structural diagram of a pendulum fixture in a comprehensive impact test bench for automobile steering components provided by an embodiment of the present invention;

Fig. 10 is a structural diagram of the drop weight fixture in the comprehensive impact test bench for automobile steering components provided by the embodiment of the present invention;

Fig. 11 is a structural diagram of the locking device in the comprehensive impact test bench for automobile steering components provided by the embodiment of the present invention;

Fig. 12 is a structural diagram of a drop hammer anti-impact device in a comprehensive impact test bench for automobile steering components provided by an embodiment of the present invention.

Explanation of reference signs:

1. Main support structure; 2. Pendulum fixture; 3. Dropping fixture; 4. Pendulum assembly; 5. Dropping assembly; 6. Pendulum release device; 7. Dropping hammer release device; 8. First lift; 9. Second elevator; 10. Locking device; 11. Drop hammer anti-impact device; 12. Lift bottom plate; 13. Bearing seat; 14. Intermediate shaft; 15. Pulley; 16. Stop sleeve; 17. First flexible rope ; 18. The second flexible rope;

101, the first bottom platform; 102, the high column; 103, the low column; 104, the beam; 105, the reinforcing beam; 106, the second bottom platform;

201. The first T-shaped groove bar; 202. The first clamp locking block; 203. The first support block;

301, the second T-shaped groove bar; 302, the second clamp locking block; 303, the clamp support frame; 304, the second support block;

401, support block; 402, swing rod; 403, counterweight block; 404, collision block; 405, rotating shaft; 406, transition block; 407, connection block;

501, bottom plate; 502, fixed plate; 503, guide post; 504, guide plate; 505, counterweight plate; 506, impact block; 507, fixed sleeve; 508, fixed seat;

601, the first connecting frame; 602, the first cylinder; 603, the first fixed frame; 604, the first rotating rod; 605, the second cylinder; 606, the first pivot shaft; 607, the second pivot shaft; 608, the first Three pivot shafts; 609, the first locking pin;

701, the second connecting frame; 702, the fourth cylinder; 703, the second fixed frame; 704, the second rotating rod; 705, the fifth cylinder; 706, the fourth pivot shaft; 707, the fifth pivot shaft; 708, the first Six pivot shafts; 709, the second locking pin;

1001a, upper frame body; 1001b, tripod; 1001c, tail plate; 1002, third cylinder; 1003, locking top plate; 1004, damping plate;

1101, the sixth cylinder; 1102, the damping block; 1103, the cylinder support;

A. Test sample; B. Mounting plate; C. Sensor; D. Block.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. any such actual relationship or order exists between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. Without further limitations, an element defined by the words "comprising..." or "comprising..." does not exclude the presence of additional elements in the process, method, article or terminal device comprising said element. In addition, in this article, "greater than", "less than", "exceeding" and so on are understood as not including the original number; "above", "below", "within" and so on are understood as including the original number.

As shown in Figures 1 and 2, a comprehensive impact test bench for steering parts of an automobile includes a pendulum assembly for pendulum impact tests and a drop weight assembly for drop weight impact tests.

The pendulum assembly includes a pendulum impact support frame, as shown in Figure 3, the pendulum impact support frame is composed of a first bottom platform 101, two high columns 102 and two low columns 103, the height of the high columns 102 is To be higher than the low column 103. The first bottom platform 101 has a rectangular shape, and two tall columns 102 are arranged side by side and vertically fixed on one side of the top surface of the first bottom platform 101 , and this side is the front side of the first bottom platform 101 . The two low columns 103 are side by side and vertically fixed on the other side of the top surface of the first bottom platform 101 , and this side is the rear side of the first bottom platform 101 . The two high columns 102 and the two low columns 103 are arranged in a rectangle, and are fixedly connected to the top surface of the first bottom platform 101 by screws. The two high columns 102 are connected by a beam 104, so that the two high columns 102 and the beam 104 form a first support, and the two low columns 103 form a second support. Adjacent high columns 102 and low columns 103 are connected by reinforcing beams 105 , and each reinforcing beam 105 is parallel to each other.

As shown in FIG. 1 , the first elevator 8 is installed on the upper part of the first bracket, and the first elevator 8 is installed between two high columns 102 through the elevator floor 12 . The first elevator 8 uses the standard model KCG-500-1000kg/30m, and the name is a multifunctional elevator. The top of the first bracket is equipped with a pulley device. Since the pulley device of the same structure is also used in the drop weight assembly, for the convenience of distinction, the pulley device in the pendulum assembly is defined as the first pulley device, and The pulley assembly in the drop weight assembly is defined as the second pulley assembly. As shown in FIG. 4 , the pulley device (whether it is the first pulley device or the second pulley device) is composed of two bearing housings 13 , an intermediate shaft 14 , a pulley 15 and two retaining sleeves 16 . In this pendulum assembly, since the pulley device has been defined as the first pulley device, the bearing seat 13, the intermediate shaft 14, the pulley 15, and the retaining sleeve 16 are correspondingly defined as the first bearing seat, the first intermediate shaft, the first The pulley and the first stopper are used to clearly illustrate the structure of the pendulum assembly. As shown in Figure 1, a first bearing seat (bearing seat 13) is installed on the top of each high column 102 in the first bracket, and the first intermediate shaft (intermediate shaft 14) is rotatably connected to the two first bearing seats (bearing seat 13), the first pulley (pulley 15) is assembled in the middle of the first intermediate shaft (intermediate shaft 14) and rotates with the first intermediate shaft (intermediate shaft 14). The first intermediate shaft (intermediate shaft 14) is respectively provided with a first stop sleeve (block sleeve 16) on both sides of the first pulley (pulley 15) to prevent the first pulley (pulley 15) from left and right shaking. After the first flexible rope 17 bypasses the first pulley (pulley 15 ), one end is connected with the output shaft of the first elevator 8 , and the other end is connected with the pendulum uncoupling device 6 . The first flexible rope is preferably a steel wire rope. As shown in FIG. 1 , the pendulum uncoupling device 6 is connected with the pendulum assembly 4 installed on the second bracket.

As shown in FIG. 5 , the pendulum assembly 4 includes a support block 401 , a swing rod 402 , a counterweight 403 , a collision block 404 , a rotating shaft 405 , a transition block 406 , a connecting block 407 , and an angle encoder. There are four supporting blocks 401, which are fixed on the tops of the two low columns 103 by screws and located between the two low columns 103, and the four supporting blocks 401 are arranged in a square shape. There are also four rotating shafts 405 and four transition blocks 406 , and each transition block 406 is hinged to a supporting block 401 through a rotating shaft 405 . Wherein, the angle encoder is installed on a rotating shaft 405 , the angle encoder is connected with a low column 103 , and the angle encoder is used to measure the swing angle of the swing rod 402 . There are four connecting blocks 407, and there are four swing bars 402 as well. One end of each swing rod 402 is fixedly connected to a transition block 406 , and the other end is fixedly connected to a connecting block 407 . The four connecting blocks 407 are hinged with the counterweight 403 respectively, and the counterweight 403 is equipped with a collision block 404 for striking the test sample on the pendulum fixture 2 . The counterweight 403 is located between the two low columns 103, and the weight can be configured according to different requirements.

As shown in FIG. 7 , the pendulum release device 6 includes a first connecting frame 601 , a first cylinder 602 , a first fixing frame 603 , a first rotating rod 604 and a second cylinder 605 . Wherein, the first connecting frame 601 is connected to the end of the first flexible rope 17 , and the cylinder bottom of the first cylinder 602 is hinged to one end of the first connecting frame 601 through a first pivot shaft 606 . One end of the first fixing frame 603 is fixedly connected with the other end of the first connecting frame 601 . One end of the first rotating rod 604 is hinged with the piston rod in the first cylinder 602 through the second pivot shaft 607 , and the other end is hinged with the first fixed frame 603 through the third pivot shaft 608 . The cylinder barrel in the second cylinder 605 is fixedly connected with the other end of the first fixing bracket 603 . The piston rod in the second cylinder 605 is connected with a first locking pin 609 , and the first locking pin 609 cooperates with the first rotating rod 604 to control the swing of the swinging rod 402 .

As shown in FIGS. 1 and 9 , the pendulum clamp 2 includes a first T-slot bar 201 and a first clamp locking block 202 fixed on the top surface of the first bottom platform 101 . The first T-slot bar 201 extends toward the counterweight 403 and the collision block 404 . Both ends of the first T-shaped groove bar 201 are provided with first support blocks 203 , and the test sample A is placed between the two first support blocks 203 . As shown in FIG. 9 , a mounting plate B is connected to the front end of the test sample A, and a sensor C is mounted on the mounting plate B. The sensor C is connected with a pad D that is in contact with the impact block 404 . The first clamp locking block 202 is close to the tail of the first T-slot bar 201 for clamping the test sample A.

As shown in FIG. 1 , locking devices 10 for locking the pendulum assembly 4 are installed on both sides of the pendulum assembly 4 . The locking device 10 located on both sides of the pendulum assembly 4 has the same structure. As shown in FIG. The pedestal body consists of an upper frame body 1001a, a tripod 1001b and a tail plate 1001c. The foot frame 1001b is connected to the top surface of the first bottom platform 101 by screws, the upper frame body 1001a is fixed on the foot frame 1001b, and the tail plate 1001c is installed on one side of the upper frame body 1001a. The bottom of the cylinder barrel in the third cylinder 1002 is hinged to the tail plate 1001c, the locking top plate 1003 is hinged to the piston rod in the third cylinder 1002, and the damping plate 1004 is connected to the locking top plate 100. As shown in FIG. 1 , the damping plates 1004 in the two locking devices 10 face each other, and the counterweight 403 can be clamped or loosened under the drive of the third cylinder 1002 .

The above structure is a pendulum assembly, which will be described in detail below.

The drop weight assembly includes a drop weight impact support frame, as shown in FIG. 3 , the drop weight impact support frame is composed of a second bottom platform 106 and two high columns 102 . The second bottom platform 106 is connected side by side with the first bottom platform 101 and is located at the front side of the first bottom platform 101 . Two high columns 102 are side by side and vertically fixed on the top surface of the second bottom platform 106, and the two high columns 102 are connected by a crossbeam 104, so that the two high columns 102 on the second bottom platform 106 and between them The crossbeam 104 constitutes the third support. The first bottom platform 101 , the second bottom platform 106 , the first support, the second support and the third support together constitute the main support structure 1 of the comprehensive impact test bench for automobile steering components.

As shown in FIG. 1 , the second elevator 9 is installed on the upper part of the third support, and the second elevator 9 is installed between two high columns 102 . A second pulley device is installed on the top of the third support 105 . As shown in FIG. 4 , the pulley device is composed of two bearing housings 13 , an intermediate shaft 14 , a pulley 15 and two retaining sleeves 16 . In this drop hammer assembly, since the pulley device has been defined as the second pulley device, the bearing seat 13, the intermediate shaft 14, the pulley 15, and the retaining sleeve 16 are correspondingly defined as the second bearing seat, the second intermediate shaft, the second The pulley and the second stopper are used to clearly illustrate the structure of the pendulum assembly. As shown in Figure 1, a second bearing seat (bearing seat 13) is installed on the top of each high column 102 in the third support, and the second intermediate shaft (intermediate shaft 14) is rotatably connected to the two second bearing seats (bearing seat 13), the second pulley (pulley 15) is assembled in the middle of the second intermediate shaft (intermediate shaft 14) and rotates with the second intermediate shaft (intermediate shaft 14). Both sides of the second pulley (pulley 15) on the second intermediate shaft (intermediate shaft 14) are respectively provided with a second stop sleeve (block sleeve 16), to prevent the second pulley (pulley 15) from left and right shaking. After the second flexible rope 18 passes around the second pulley (pulley 15), one end is connected with the output shaft of the second elevator 9, and the other end is connected with the drop hammer uncoupling device 7. The second flexible rope 18 is preferably a steel wire rope. As shown in FIG. 1 , the drop hammer uncoupling device 7 is connected with the drop hammer assembly 5 installed on the third bracket.

As shown in Figures 6 and 8, the drop hammer assembly 5 includes:

The bottom plate 501 is fixedly connected with the top surface of the second bottom platform 106 . Two fixing sleeves 507 are connected to the bottom plate 501 .

The fixing plate 502 is connected with the two high columns 102 in the third bracket.

The guide post 503 is vertically connected between the bottom plate 501 and the fixing plate 502 . There are two guide posts 503 . One end of each guide post is connected to the fixing sleeve 507 , and the other end is connected to the fixing plate 502 through a fixing seat 508 .

The guide plate 504 is mounted on the guide post 503 in a manner of sliding along the guide post 503 .

A counterweight plate 505 is mounted on the guide plate 504, and the weight of the counterweight plate 505 can be adjusted as required.

The impact block 506 is fixed on the guide plate 504 and is used to impact the test sample on the drop weight fixture 3 .

The structure of the drop-weight release device 7 is similar to that of the pendulum release device 6 , therefore, the structure of the drop-weight release device 7 is also described using FIG. 7 . As shown in FIG. 7 , it includes a second connecting frame 701 , a fourth cylinder 702 , a second fixing frame 703 , a second rotating rod 704 and a fifth cylinder 705 . Wherein, the first connecting frame 701 is connected to the end of the second flexible rope 18 , and the cylinder bottom of the fourth cylinder 702 is hinged to one end of the second connecting frame 701 through a fourth pivot shaft 706 . One end of the second fixing frame 703 is fixedly connected with the other end of the second connecting frame 701 . One end of the second rotating rod 704 is hinged with the piston rod in the fourth cylinder 702 through the fifth pivot axis 707 , and the other end is hinged with the second fixed frame 703 through the sixth pivot axis 708 . The cylinder barrel in the fifth cylinder 705 is fixedly connected with the other end of the second fixing frame 703 . The piston rod in the fifth cylinder 705 is connected with a second locking pin 709 , and the second locking pin 709 cooperates with the second rotating rod 704 to control the sliding of the guide plate 504 .

As shown in Figure 1, the drop weight clamp 3 is installed on the lower part of the third bracket, and as shown in Figure 10, the drop weight clamp 3 includes a second T-shaped groove bar 301 and a second T-shaped groove bar 301 fixed on the third bracket. Two fixture locking blocks 302 . The top surface of the second bottom platform 106 is fixed with a clamp support frame 303, which is located between the two high columns 102 in the third support, and the second T-shaped groove bar 301 is installed on the clamp support frame 303 and extend towards impact block 506. Both ends of the second T-shaped groove bar 301 are provided with second support blocks 304 , and the test sample A is placed between the two second support blocks 304 . A mounting plate B is connected to the front end of the test sample A, and a sensor C is mounted on the mounting plate B. The sensor C is connected with a cushion block D in contact with the impact block 506 . The second clamp locking block 302 is close to the tail of the second T-slot bar 301 and is used for clamping the test sample A.

As shown in FIG. 1 , the drop weight anti-shock device 11 is installed on the top surface of the second bottom platform 106 and located on both sides of the drop weight fixture 3 . As shown in FIG. 12 , the drop hammer anti-shock device 11 includes a sixth cylinder 1101 , a damping block 1102 and a cylinder support 1103 . The cylinder bracket 1103 is fixed on the top surface of the second bottom platform 106 and close to the drop weight fixture 3, the cylinder bottom of the sixth cylinder 1101 is fixed on the cylinder bracket 1103, and the sixth cylinder 1101 A damping block 1102 for contacting the guide plate 504 is connected to the piston rod.

The test method of the above comprehensive impact test bench for steering components of automobiles is as follows:

1. Pendulum impact test

1) Clamp the test sample on the pendulum fixture 2, and install the sensor at the position of the test sample to be impacted to ensure that the sensor is firmly installed and has sufficient strength. The location of the impact, for example: the input end of the steering gear of the car, the input end of the steering column of the car, etc.

2) Connect the pendulum assembly 4 with the pendulum uncoupling device 6 through the connecting hook.

3) Use the first elevator 8 to lift the pendulum assembly 4 to a certain angle. (The angle range is calculated according to the required impact force)

4) Start the test. After the test has passed the set delay time (which can be set by the host computer software before the test), the test action is completed (usually the host computer sends commands to make the actuators such as cylinders move, and then the steering components of the car are integrated. The impact test bench stops moving), and at the same time collect and process the data generated by the sensor through the acquisition board, and draw the curve of impact force and time;

2. Drop hammer impact test

1) Clamp the test sample on the drop weight fixture 3, and install the sensor at the position of the test sample to be impacted to ensure that the sensor is installed firmly and has sufficient strength. The location of the impact, for example: the input end of the steering gear of the car, the input end of the steering column of the car, etc.

2) Connect the drop hammer assembly 5 with the drop hammer decoupling device 7 through the connecting hook.

3) Use the second elevator 9 to lift the drop hammer assembly 5 to a certain height. (The height range is calculated according to the required impact force)

4) Start the test. After the test has passed the set delay time (which can be set by the host computer software before the test), the test action is completed (usually the host computer sends commands to make the actuators such as cylinders move, and then the steering components of the car are integrated. The impact test bench stops moving), and at the same time, the data generated by the sensor is collected and processed through the acquisition board, and the curve of impact force and time is drawn.

The comprehensive impact test bench for steering components of automobiles provided in this embodiment and the detection method thereof can perform pendulum impact tests and drop weight impact tests. The comprehensive impact test bench for automobile steering parts utilizes the free fall movement of the pendulum assembly and the drop weight assembly to act on the test sample, and can directly perform the impact load test on the test sample. Through the elevator, the remote control is realized, which greatly improves the safety, and through the feedback of the sensor, the lifting height of the falling weight and the lifting angle of the pendulum are more accurate, so that the impact load resistance of the test sample can be easily detected. , the detection result is more accurate.

Certain exemplary embodiments of the present invention have been described above only by way of illustration, and it goes without saying that those skilled in the art can use various methods without departing from the spirit and scope of the present invention. The described embodiments are modified. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims (10)

1. A comprehensive impact test bench for automobile steering parts, characterized in that, comprising a pendulum assembly for carrying out a pendulum impact test and a drop weight assembly for a drop weight impact test; The pendulum assembly includes a pendulum impact support frame; a pendulum fixture for clamping the test sample is placed horizontally on the lower front side of the pendulum impact support frame, and a first pulley device and a first elevator are installed on the rear side; After the first flexible rope bypasses the first pulley device, one end is connected with the output shaft of the first elevator, and the other end is connected with the pendulum uncoupling device; the pendulum uncoupling device is connected with the pendulum impact supporting frame The front side is connected to the pendulum assembly for exerting a swing impact on the test sample on the pendulum fixture; the two sides of the pendulum assembly are equipped with locking devices that can lock the pendulum assembly; The drop weight assembly includes a drop weight impact support frame; the lower part of the drop weight impact support frame is vertically placed with a drop weight fixture for clamping the test sample, and the upper part is equipped with a second pulley device and a second elevator; the second After the flexible rope bypasses the second pulley device, one end is connected to the output shaft of the second elevator, and the other end is connected to the drop hammer release device; the drop hammer release device is arranged on the upper part of the drop hammer impact support frame and is used for A drop weight assembly that applies a vertical impact to the test sample on the drop weight fixture is connected; a drop weight anti-impact device is installed near the drop weight fixture. 2. The comprehensive impact test rig for automobile steering parts according to claim 1, wherein the pendulum impact support frame comprises a first bottom platform, a front side and a rear side of the top of the first bottom platform, respectively. a first bracket and a second bracket; The first pulley device is installed on the top of the first bracket, and the first elevator is installed on the top of the first bracket; The pendulum assembly is installed on the second bracket, the pendulum clamp is installed horizontally on the top surface of the first bottom platform and is located below the second bracket, and the locking device is installed on the second bracket. on the top surface of the first bottom platform and close to the pendulum assembly. 3. The comprehensive impact test bench for automobile steering components according to claim 2, wherein the pendulum assembly comprises: a support block, which is fixedly connected to the top of the second bracket; The swing rod is located between the top of the second support and the top surface of the first bottom platform, and one end is hinged with the support block, and the other end is hinged with the counterweight; The impact block of the test sample on the pendulum fixture; An angle encoder, which is connected with the second bracket, is used to measure the swing angle of the swing rod. 4. The automobile steering component comprehensive impact test bench according to claim 3, characterized in that, the first pulley device comprises two first bearing blocks mounted on the top of the first bracket, which are rotatably connected to the first A first intermediate shaft between two bearing seats, a first pulley assembled on the first intermediate shaft and rotating with the first intermediate shaft; the first flexible rope is looped over the first pulley; The pendulum uncoupling device includes: a first connector connected to an end of the first flexible cord; the first cylinder, the bottom of the cylinder barrel is hinged to one end of the first connecting frame; a first fixing frame, one end of which is fixedly connected to the other end of the first connecting frame; A first rotating rod, one end of which is hinged with the piston rod in the first cylinder, and the other end is hinged with the first fixed frame; The second cylinder, its cylinder barrel is fixedly connected with the other end of the first fixed frame; the piston rod in the second cylinder is connected with a first locking pin, and the first locking pin is connected with the first rotating The rod cooperates to control the swing of the swing rod. 5. The comprehensive impact test bench for automobile steering components according to claim 4, wherein the pendulum fixture includes a first T-shaped groove bar and a first T-shaped groove fixed on the top surface of the first bottom platform. Fixture locking block; both ends of the first T-shaped groove bar are provided with a first support block, and the test sample is placed between the two first support blocks; the first clamp locking block is close to the first The end of a T-slot for clamping the test sample; The locking device located on both sides of the pendulum assembly has the same structure, and the locking device includes a base fixed on the top surface of the first bottom platform and close to the counterweight, the bottom of the cylinder and the The third cylinder hinged by the base, the locking top plate hinged with the piston rod in the third cylinder, and the damping plate connected to the locking top plate; the damping plates in the two locking devices are opposite to each other, and in the third cylinder The counterweight can be clamped or loosened under the driving. 6. The comprehensive impact test bench for automobile steering components according to claim 1, wherein the drop weight impact supporting frame comprises a second bottom platform and a third bracket fixed on the top surface of the second bottom platform; The second pulley device is installed on the top of the third bracket, and the second elevator is installed on the top of the third bracket; The drop weight assembly and the drop weight clamp are installed on the same side of the third bracket, and the drop weight clamp is located at the lower part of the third bracket; The drop weight anti-shock device is installed on the top surface of the second bottom platform and is close to the drop weight clamp. 7. The automobile steering component comprehensive impact test bench according to claim 6, wherein the drop weight assembly comprises: a bottom plate fixedly connected to the top surface of the second bottom platform; a fixing plate connected to the third bracket; a guide post vertically connected between the base plate and the fixed plate; a guide plate mounted on the guide post in a manner to slide along said guide post; a counterweight plate mounted on said guide plate; An impact block, fixed on the guide plate, is used to impact the test sample on the drop weight fixture. 8. The comprehensive impact test bench for automobile steering components according to claim 7, wherein the second pulley device includes two second bearing blocks mounted on the top of the third bracket, which are rotatably connected to the first The second intermediate shaft between the two bearing seats, the second pulley assembled on the second intermediate shaft and rotating with the second intermediate shaft; said second flexible rope is looped over said second pulley; The drop hammer decoupling device includes: a second connector connected to the end of the second flexible cord; The fourth cylinder, the bottom of the cylinder barrel is hinged to one end of the second connecting frame; a second fixing frame, one end of which is fixedly connected to the other end of the second connecting frame; A second rotating rod, one end of which is hinged with the piston rod in the fourth cylinder, and the other end is hinged with the second fixed frame; The fifth cylinder, whose cylinder barrel is fixedly connected with the other end of the second fixed frame; the piston rod in the fifth cylinder is connected with a second locking pin, and the second locking pin is connected with the second rotating A rod cooperates to control the sliding of the guide plate. 9. The comprehensive impact test bench for automobile steering parts according to claim 8, characterized in that, the drop weight fixture includes a second T-shaped groove bar and a second fixture locking block fixedly mounted on the third bracket ; Both ends of the second T-shaped groove bar are provided with a second support block, between the two second support blocks for placing the test sample; the second clamp locking block is close to the second T-shaped groove The tail of the strip is used to clamp the test sample; The falling weight anti-shock device includes a sixth cylinder whose bottom of the cylinder is fixed on the top surface of the second bottom platform and close to the falling weight fixture, and the piston rod in the sixth cylinder is connected with the guide plate Contact damping block. 10. The automobile steering component comprehensive impact test bench according to claim 1, its detection method is as follows: 1. Pendulum impact test 1) Clamp the test sample on the pendulum fixture, and install the sensor at the position of the test sample to be impacted; 2) Connect the pendulum assembly with the pendulum uncoupling device through the connecting hook; 3) using the first elevator to lift the pendulum assembly to a certain angle; 4) Start the test. After the test has passed the set delay time, the test action is completed. At the same time, the data generated by the sensor is collected and processed through the acquisition board, and the curve of impact force and time is drawn; 2. Drop hammer impact test 1) Clamp the test sample on the drop hammer fixture, and install the sensor at the position of the test sample to be impacted; 2) Connect the drop hammer assembly with the drop hammer decoupling device through the connecting hook; 3) Use the second elevator to lift the drop hammer assembly to a certain height; 4) Start the test, complete the test action after the set delay time, and at the same time collect and process the data generated by the sensor through the acquisition board, and draw the curve of impact force and time.