A device for measuring impulse in a vehicle crash test

Abstract

The application discloses a kind of automobile collision test impulse measuring devices, including base and top plate, the upper end of the base is slidably connected with the block of impact, the lower end of the top plate is fixedly connected with the fixed pulley, the inside of the weight bracket is slidably connected with the counterweight, the traction rope is bolted between the bolted member and outer plate, the inside of the weight bracket is additionally provided with three groups of additional blocks, the inner end of two groups of the adapter bar is fixedly connected with the first positioning rod, the inside of the weight bracket is slidably connected with the second positioning rod.In the application, first, the impulse generated in the process of impact of automobile can be observed intuitively by the height of counterweight, second, the weight of counterweight is adjusted according to the strength of automobile impact, so as to improve the application range of measuring device, finally, the impulse generated in the process of automobile impact test is calculated according to the height data recorded by marker pen, so as to obtain accurate data of impulse measurement, which is convenient for experimenters to measure and record.

Description

Technical Field

[0001] This invention belongs to the field of automotive crash test technology, specifically an impulse measurement device for automotive crash tests. Background Technology

[0002] Car crash testing is an important part of car safety testing. It can be used to evaluate the passive safety performance of a car after a collision. Crash tests can be divided into two types: simulated crash tests and real car crash tests. Simulated crash tests use a crash simulation device to replace an actual car, while real car crash tests use an actual car to crash into a fixed barrier. The car is fixed on a small cart with a track and is pulled by a cable, accelerated to a specified impact speed, and then crashes into a fixed barrier.

[0003] When a car undergoes a crash test, various measuring instruments need to be prepared in advance to ensure that diverse car crash data can be obtained after the crash, so that the testers can have a more comprehensive understanding of the car's safety protection performance during the crash. However, in existing car crash tests, it is often difficult for testers to directly observe the impulse generated during the car crash, and due to the limited space of the crash test site, existing measuring devices are difficult to measure high-intensity car crashes. Summary of the Invention

[0004] The purpose of this invention is to provide an impulse measurement device for automobile collision testing in order to solve existing technical problems.

[0005] The technical solution adopted in this invention is as follows: A vehicle collision test impulse measuring device includes a base and a top plate disposed on the upper side of the base. A frame plate is fixedly connected to the upper end of the base, and a baffle is fixedly connected to the side of the upper end of the base away from the frame plate. A collision-bearing block is slidably connected to the upper end of the base between the frame plate and the baffle. An impact plate is fixedly connected to the outer end of the collision-bearing block, and an outer connecting plate is fixedly connected to the upper end of the collision-bearing block. A support frame is fixedly connected to the lower end of the top plate, and a fixed pulley is fixedly connected to the lower end of the top plate inside the support frame. A counterweight is slidably connected inside the support frame, and a bolt is fixedly connected to the inner end of the counterweight. A traction rope is bolted between the bolt and the outer connecting plate, and the traction rope is wound around the fixed pulley. On the outside, the inside of the load-bearing frame is also provided with three sets of additional blocks. The outer end of the load-bearing frame is fixedly connected to a side plate. The inside of the side plate is slidably connected to two sets of symmetrically distributed adapter rods. The inner ends of the two sets of adapter rods are fixedly connected to a first positioning rod. The outer end of the side plate is equipped with a drive motor. The output end of the drive motor passes through to the inner side of the side plate and is connected to a rotating shaft. The outer end of the rotating shaft is fixedly connected to an adapter rod that is coaxially distributed and used in conjunction with the sliding block. The outer end of the rotating shaft is fixedly connected to a support rod. The inside of the load-bearing frame is slidably connected to a second positioning rod. The second positioning rod and the support rod are rotatably connected to a support arm. The inside of the additional blocks is also provided with slots for inserting the first positioning rod and the second positioning rod.

[0006] The frame plate has through holes and slots that are adapted to the impact plate.

[0007] The outer end of the impact block is fixedly connected to two sets of symmetrically distributed side plates, and a sliding rod that penetrates the side plates and is slidably connected to the frame plate and the baffle is fixedly connected to the side plates.

[0008] The counterweight and the three sets of additional blocks are all rotatably connected to symmetrically distributed rollers.

[0009] The load-bearing frame has a sliding groove inside that allows the counterweight and additional block to slide together, and a limiting rail inside the load-bearing frame located outside the sliding groove to allow the rollers to roll together.

[0010] The side plate has a sliding groove inside that cooperates with the sliding block to slide.

[0011] The adapter rod has a drive groove inside that cooperates with the slider to slide.

[0012] The outer end of the counterweight is fixedly connected to a clamping arm, and the extended end of the clamping arm extends through to the outside of the support frame. The outer end of the support frame is fixedly connected to symmetrically distributed distance measuring plates located outside the clamping arm.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] 1. In this invention, a frame plate and a baffle are provided on the base, a collision block is provided on the base, an impact plate is provided on the collision block, a fixed pulley and a support frame are provided on the top plate, a counterweight is provided in the support frame, and a traction rope is provided between the counterweight and the load-bearing block. The traction rope is wrapped around the outside of the fixed pulley. Under the impact force generated by the car collision, the impact plate drives the collision block to slide along the slide bar. The load-bearing block pulls the counterweight through the traction rope. At this time, the counterweight will move vertically upward. By observing the height of the counterweight, the experimenter can intuitively observe the impulse generated by the car during the collision.

[0015] 2. In this invention, an additional block and a second positioning rod are provided in the load-bearing frame. A side plate is provided on the load-bearing frame, and a drive motor is provided on the side plate. Inside the frame plate, there is a transition rod, a rotating shaft, and a sliding block. A first positioning rod and a slider are provided on the sliding block. A support rod is provided on the rotating shaft, and a support arm is provided between the support rod and the second positioning rod. When the drive motor is started, the rotating shaft rotates, which in turn drives the transition rod to rotate. Through the sliding cooperation of the drive groove and the slider, the first positioning rod slides outward. When the second positioning rod is inserted into the slot inside the additional block, the first positioning rod will disengage from the slot of the lowest additional block. At this time, the additional block falls onto the counterweight. As the rotating shaft continues to rotate, the additional block in the middle layer slides off the top of the sliding groove, further increasing the weight of the counterweight. The weight of the counterweight is adjusted according to the intensity of the car impact, thereby improving the applicability of the measuring device.

[0016] 3. In this invention, a clamping arm is provided on the counterweight block, and a distance measuring plate is provided on the support frame. The counterweight block drives the marker pen to move upward in the vertical direction. The marker pen leaves the upward trajectory of the counterweight block on the distance measuring plate and records the upward height of the counterweight block. Based on the height data recorded by the marker pen, the impulse generated in the car collision test is calculated, thereby obtaining accurate data for impulse measurement, which is convenient for experimental personnel to calculate and record the measurement records. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a rear sectional view of the present invention;

[0020] Figure 4 This is a side sectional view of the present invention;

[0021] Figure 5 This is a side sectional view of the connection between the side support plate and the load-bearing frame in this invention;

[0022] Figure 6 This is a partial enlarged view of point A in the present invention.

[0023] The markings in the diagram are: 1. Base; 2. Frame plate; 201. Hole / slot; 3. Impact block; 4. Side plate; 5. External plate; 6. Impact plate; 7. Baffle; 8. Slide rod; 9. Top plate; 10. Fixed pulley; 11. Traction rope; 12. Support frame; 1201. Sliding groove; 1202. Limiting rail; 13. Counterweight block; 1301. Bolted connector; 1302. Clamping arm; 14. Additional block; 15. Roller; 16. Side plate; 1601. Sliding groove; 17. Rotating shaft; 18. Adapter rod; 1801. Drive groove; 19. First positioning rod; 20. Sliding block; 21. Slider; 22. Support rod; 23. Support arm; 24. Second positioning rod; 25. Drive motor; 26. Distance measuring plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] Reference Figure 1-6A vehicle collision test impulse measuring device includes a base 1 and a top plate 9 disposed on the upper side of the base 1. A frame plate 2 is fixedly connected to the upper end of the base 1. A baffle 7 is fixedly connected to the side of the upper end of the base 1 away from the frame plate 2. A collision block 3 is slidably connected between the frame plate 2 and the baffle 7 at the upper end of the base 1. An impact plate 6 is fixedly connected to the outer end of the collision block 3. An outer plate 5 is fixedly connected to the upper end of the collision block 3. A support frame 12 is fixedly connected to the lower end of the top plate 9. A fixed pulley 10 is fixedly connected to the lower end of the top plate 9 inside the support frame 12. A counterweight 13 is slidably connected inside the support frame 12. The inner end of the load-bearing frame 12 is fixedly connected to a bolted member 1301. A traction rope 11 is bolted between the bolted member 1301 and the outer plate 5, and the traction rope 11 is wrapped around the outside of the fixed pulley 10. The inside of the load-bearing frame 12 is also provided with three sets of additional blocks 14. The outer end of the load-bearing frame 12 is fixedly connected to a side plate 16. The inside of the side plate 16 is slidably connected to two sets of symmetrically distributed adapter rods 18. The inner ends of the two sets of adapter rods 18 are fixedly connected to a first positioning rod 19. The outer end of the side plate 16 is equipped with a drive motor 25. The output end of the drive motor 25 passes through the inner side of the side plate 16 and is connected to a rotating shaft 17. The outer end of the rotating shaft 17 is connected to the drive motor 25. A fixed connection is provided with a coaxially distributed adapter rod 18 that works in conjunction with the sliding block 20. A support rod 22 is fixedly connected to the outer end of the rotating shaft 17. A second positioning rod 24 is slidably connected inside the support frame 12. A support arm 23 is rotatably connected between the second positioning rod 24 and the support rod 22. The additional block 14 also has slots for inserting the first positioning rod 19 and the second positioning rod 24. When the car to be tested impacts the impact plate 6, the counterweight 13 will move upward along the sliding groove 1201. The height to which the counterweight 13 rises allows the experimenter to visually observe the impact force generated by the car during the impact. The first positioning rod 19 disengages from the slot of the lowest additional block 14. At this time, the additional block 14 will fall onto the counterweight 13, enabling the impulse measuring device to detect the impulse of a high-intensity car impact. As the rotating shaft 17 continues to rotate, the support rod 22 will pull the second positioning rod 24 through the support arm 23, pulling the second positioning rod 24 away from the slot of the intermediate layer additional block 14. At this time, the intermediate layer additional block 14 slides off the top of the sliding groove 1201, further increasing the weight of the counterweight 13. The experimenter can adjust the weight of the counterweight 13 according to the intensity of the car impact, thereby improving the applicability of the measuring device.

[0026] Reference Figure 1-5 The frame plate 2 has a through-hole groove 201 that matches the impact plate 6. The outer end of the impact block 3 is fixedly connected to two sets of side plates 4 that are symmetrically distributed. The frame plate 2 and the baffle plate 7 are fixedly connected to a sliding rod 8 that passes through the side plate 4 and is slidably connected to the side plate 4. Through the sliding cooperation between the sliding rod 8 and the side plate 4, the impact block 3 maintains a horizontal and stable sliding state when it is impacted, which makes it easier for the experimenters to collect data.

[0027] Reference Figure 1 , Figure 3 and Figure 4 The counterweight 13 and the three sets of auxiliary blocks 14 are all rotatably connected to symmetrically distributed rollers 15. The inside of the support frame 12 has a sliding groove 1201 that cooperates with the sliding of the counterweight 13 and auxiliary blocks 14. The inside of the support frame 12, located outside the sliding groove 1201, has a limiting rail 1202 that cooperates with the rolling of the rollers 15. Through the sliding cooperation of the rollers 15 and the limiting rail 1202, the counterweight 13 is prevented from detaching from the support frame 12 during the sliding process, thereby ensuring the stability of the sliding of the counterweight 13. In addition, the setting of the rollers 15 reduces the contact friction between the counterweight 13 and the inner wall of the support frame 12, thereby ensuring the accuracy of the measurement data.

[0028] Reference Figure 1 , Figure 4 , Figure 5 and Figure 6 The side plate 16 has a sliding groove 1601 inside that cooperates with the sliding block 20 to slide, and the adapter rod 18 has a drive groove 1801 inside that cooperates with the slider 21 to slide. During rotation, the adapter rod 18 will drive the sliding block 20 and the first positioning rod 19 fixedly connected to the sliding block 20 to slide along the side plate 16 through the sliding cooperation of the drive groove 1801 and the slider 21.

[0029] Reference Figure 1 , Figure 2 and Figure 4 The outer end of the counterweight 13 is fixedly connected to a clamping arm 1302, and the extension end of the clamping arm 1302 extends to the outside of the support frame 12. The outer end of the support frame 12 is fixedly connected to a symmetrically distributed rangefinder plate 26 on the outside of the clamping arm 1302. The marker pen is placed in the clamping arm 1302. During the collision test, the counterweight 13 drives the marker pen to move upward in the vertical direction. During the upward movement of the marker pen, the upward trajectory of the counterweight 13 will be left on the rangefinder plate 26. The upward height of the counterweight 13 is recorded. The impulse generated in the car collision test is calculated from the upward height data of the counterweight 13, so as to obtain accurate data of impulse measurement.

[0030] Working principle: First, when the car to be tested impacts the impact plate 6, the impact plate 6, under the impact force generated by the car impact, causes the impact block 3 to slide horizontally along the slide bar 8. While sliding horizontally, the impact block 3 pulls the counterweight block 13 located inside the support frame 12 via the traction rope 11. At this time, the counterweight block 13 will move vertically upward along the sliding groove 1201. The height of the rise of the counterweight block 13 allows the experimenter to visually observe the impulse generated by the car during the impact. Second, because the distance the impact block 3 slides on the base 1 is limited, and the range of the counterweight block 13 sliding along the sliding groove 1201 is also limited, when the experimenter conducts a more violent impact... During the vehicle collision impulse measurement, the experimenter needs to start the drive motor 25 located at the outer end of the adapter rod 18 to drive the rotating shaft 17 to rotate, which in turn drives the adapter rod 18, which is fixedly connected to the rotating shaft 17, to rotate. During the rotation, the adapter rod 18 will drive the sliding block 20 and the first positioning rod 19, which is fixedly connected to the sliding block 20, to slide outward along the side plate 16 through the sliding engagement of the drive groove 1801 and the slider 21. At the same time, the support rod 22 fixed at the outer end of the rotating shaft 17 will drive the second positioning rod 24 to slide inward through the support arm 23. When the second positioning rod 24 is inserted into the slot inside the middle layer additional block 14, the first positioning rod 19 will disengage from the bottommost additional block 14. The additional block 14 will fall onto the counterweight 13 under gravity, allowing the impulse measuring device to detect the impulse of a high-intensity car impact. As the rotating shaft 17 continues to rotate, the support rod 22 will pull the second positioning rod 24 through the support arm 23, pulling the second positioning rod 24 away from the slot of the intermediate layer additional block 14. At the same time, under the sliding cooperation of the drive groove 1801 and the slider 21, the sliding block 20 and the first positioning rod 19 fixedly connected to the sliding block 20 will be driven into the slot inside the uppermost additional block 14. At this time, the intermediate layer additional block 14 will slide off the top of the sliding groove 1201, continuing to increase the weight of the counterweight 13. The experimenter can adjust the weight according to the situation. The weight of the counterweight 13 is adjusted according to the intensity of the car impact to improve the applicability of the measuring device. A clamping arm 1302 is fixedly connected to the outer end of the counterweight 13. A marker pen is clamped in the clamping arm 1302. During the collision test, the counterweight 13 drives the marker pen to move upward in the vertical direction. During the upward movement, the marker pen will leave the upward trajectory of the counterweight 13 on the measuring plate 26 and record the rising height of the counterweight 13. The experimenter can calculate the impulse generated in the car collision test based on the height data recorded by the marker pen and the rising height data of the counterweight 13, thereby obtaining accurate data for impulse measurement, which is convenient for the experimenter to calculate and record the measurement data.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for measuring impulse in a car crash test, comprising a base (1) and a top plate (9) arranged on the upper side of the base (1), characterized in that: The upper end of the base (1) is fixedly connected with a shelf plate (2), the upper end of the base (1) is fixedly connected with a baffle (7) away from the shelf plate (2), the upper end of the base (1) is slidingly connected with a collision block (3) between the shelf plate (2) and the baffle (7), the outer end of the collision block (3) is fixedly connected with an impact plate (6), the upper end of the collision block (3) is fixedly connected with an external connecting plate (5), the lower end of the top plate (9) is fixedly connected with a weight supporting frame (12), the lower end of the top plate (9) is fixedly connected with a fixed pulley (10) on the inner side of the weight supporting frame (12), the inside of the weight supporting frame (12) is slidingly connected with a counterweight block (13), the inner end of the counterweight block (13) is fixedly connected with a bolted part (1301), the bolted part (1301) and the external connecting plate (5) are bolted with a traction rope (11), and the traction rope (11) is wound on the outer side of the fixed pulley (10), the inside of the weight supporting frame (12) is also provided with three groups of additional blocks (14), the outer end of the weight supporting frame (12) is fixedly connected with a side connecting plate (16), the inside of the side connecting plate (16) is slidingly connected with two groups of transfer rods (18) symmetrically distributed, the inner end of the two groups of transfer rods (18) is fixedly connected with a first positioning rod (19), the outer end of the side connecting plate (16) is provided with a driving motor (25), the output end of the driving motor (25) penetrates to the inside of the side connecting plate (16) and is drivingly connected with a rotating shaft (17), the outer end of the rotating shaft (17) is fixedly connected with the transfer rod (18) coaxially distributed and matched with the sliding block (20), the outer end of the rotating shaft (17) is fixedly connected with a support rod (22), the inside of the weight supporting frame (12) is slidingly connected with a second positioning rod (24), the second positioning rod (24) and the support rod (22) are rotatably connected with a support arm (23), the inside of the additional block (14) has a slot matched with the first positioning rod (19) and the second positioning rod (24) for insertion.

2. A device for measuring the impulse of a vehicle in a crash test according to claim 1, characterized in that: The inside of the shelf plate (2) is provided with a hole slot (201) matched with the impact plate (6).

3. A device for measuring the impulse of a vehicle in a crash test as claimed in claim 1, characterized in that: The outer end of the collision block (3) is fixedly connected with two groups of side plates (4) symmetrically distributed, the shelf plate (2) and the baffle (7) are fixedly connected with a sliding rod (8) penetrating through the side plate (4) and slidingly connected with the side plate (4).

4. The crash test impulse measuring device of claim 1, wherein: The inside of the counterweight block (13) and the three groups of additional blocks (14) is rotatably connected with symmetrical rollers (15).

5. A device for measuring the impulse of a vehicle in a crash test as claimed in claim 4, characterized in that: The inside of the weight supporting frame (12) has a sliding slot (1201) matched with the sliding of the counterweight block (13) and the additional block (14), the inside of the weight supporting frame (12) has a limiting rail (1202) matched with the rolling of the roller (15) outside the sliding slot (1201).

6. A device for measuring the impulse of a vehicle in a crash test as defined in claim 1, wherein: The inside of the side connecting plate (16) has a sliding groove (1601) matched with the sliding of the sliding block (20).

7. A device for measuring the impulse of a vehicle in a crash test as defined in claim 1, wherein: The inside of the transfer rod (18) has a driving groove (1801) matched with the sliding of the sliding block (21).

8. A device for measuring the impulse of a vehicle in a crash test as defined in claim 1, wherein: The outer end of the counterweight (13) is fixedly connected with a clamping arm (1302), and the extending end of the clamping arm (1302) penetrates to the outer side of the counterweight support (12), and the outer end of the counterweight support (12) is fixedly connected with symmetrically distributed distance measuring plates (26) on the outer side of the clamping arm (1302).

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