Machine cover lock testing device

Abstract

The utility model provides a machine cover lock testing device. The machine cover lock testing device comprises a lower base, an upper cover frame, a machine cover lock assembly and a cross beam piece. The upper cover frame comprises a frame body and a balance weight beam. The frame body is rotationally connected to the lower base, and the cross beam piece is fixed to the lower base. The machine cover lock assembly is arranged on the frame body and can be locked on the cross beam piece. The counterweight beam is fixed on the frame main body, and the weight of the counterweight beam can be changed, so that the upper cover frame can simulate machine covers with different weights. Through the arrangement, the adaptation flexibility of the machine cover lock testing device is improved, redesign of the upper cover frame is avoided, the testing efficiency is improved, the manufacturing cost is reduced, and meanwhile the universal degree of the machine cover lock testing device is also improved.

Description

Technical Field

[0001] The present application relates to the field of tooling and fixtures, and in particular to a hood lock testing device. Background Art

[0002] With the rapid development of vehicle technology, the popularity of vehicles in families is increasing, and the market demand for vehicles is also increasing. However, when people choose vehicles, they are also paying more and more attention to the safety and durability of vehicles. In order to improve the quality of vehicles, each car company will conduct a large number of experiments when designing and manufacturing each vehicle to meet market requirements. The engine hood is one of the important parts of the vehicle and is located on the front side of the vehicle. If it is opened due to quality problems during the driving of the vehicle, it will instantly block people's vision and pose a serious safety risk. In order to avoid this problem, the durability test of the engine hood lock is also one of the aspects that each car company pays more attention to.

[0003] At present, major car companies usually use actual hood parts to build hood lock system durability tooling to test the durability of the engine hood lock. When building this tooling, the entire hood system and surrounding environmental parts are required, but the hood system and surrounding environmental parts are usually not the final mass-produced parts. If there are major changes in shape and weight in the later stage, the tooling will be re-matched, resulting in a waste of resources. In addition, the tooling designed based on actual hood parts occupies a large area, which is not conducive to transportation and storage.

[0004] Therefore, it is necessary to provide an improved hood lock testing device to solve some or all of the above problems. Utility Model Content

[0005] The present application provides a bonnet lock testing device with high versatility.

[0006] The present application provides a hood lock testing device, comprising a lower base, an upper cover frame, a hood lock assembly and a crossbeam; the upper cover frame comprises a frame body and a counterweight beam; the frame body is rotatably connected to the lower base, and the crossbeam is fixed to the lower base; the hood lock assembly is arranged on the frame body and can be locked to the crossbeam; the counterweight beam is fixed to the frame body, and the weight of the counterweight beam can be changed so that the upper cover frame can simulate hoods of different weights.

[0007] Furthermore, the lower base includes a base body and a driving mechanism; the driving mechanism is fixed to the base body, and the driving mechanism can drive the frame body to rotate relative to the base body.

[0008] Furthermore, the driving mechanism includes a driving member, a fixed frame and a driving frame; the fixed frame is connected to the base body, one end of the driving frame is rotatably connected to the fixed frame, and the other end away from the fixed frame is in contact with the counterweight beam; the driving member is used to drive the driving frame to rotate relative to the fixed frame.

[0009] Furthermore, the driving frame contacts the counterweight beam only when the frame body rotates away from the base body.

[0010] Furthermore, the driving frame includes a driving frame body and a roller; the roller is arranged on the driving frame body, and the roller is in rolling contact with the counterweight beam.

[0011] Furthermore, the lower base also includes a foldable hinge assembly; the hinge assembly is respectively connected to the frame body and the base body; when the hinge assembly is extended, the frame body rotates relative to the base body and moves away from the base body along the height direction of the lower base.

[0012] Furthermore, the counterweight beam includes a beam body, a protective pad and a plurality of counterweight blocks; the protective pad is arranged on the beam body and is in contact with the driving mechanism; and the counterweight blocks are detachably connected to the beam body.

[0013] Furthermore, the hood lock assembly includes a main lock buckle and a secondary lock hook, both of which can be locked with the crossbeam member; the crossbeam member includes a crossbeam body and a main lock member and a secondary lock member arranged on the crossbeam body; the main lock member can be locked with the main lock buckle, and the secondary lock member can be locked with the secondary lock hook; the lower base also includes a lock opening mechanism arranged on the base body; the lock opening mechanism is used to release the lock between the main lock member and the main lock buckle and the lock between the secondary lock member and the secondary lock hook.

[0014] Furthermore, the lower base includes an elastic member arranged on the base body; when the upper cover frame covers the base body, the elastic member abuts against the upper cover frame, and the elastic member is in a compressed state.

[0015] Furthermore, the lower base also includes a beam support and a buffer member fixed to the base body; the beam member is arranged on the beam support; when the upper cover frame covers the base body, the buffer member contacts the upper cover frame.

[0016] Compared with the prior art, the bonnet lock test device of the present application sets a counterweight beam. When testing the durability of the bonnet lock assembly and the crossbeam, even if the bonnet system and the surrounding environment parts are changed, the weight of the counterweight beam can be changed to meet the experimental requirements for the weight of the upper cover frame, thereby improving the adaptability of the bonnet lock test device, avoiding the redesign of the upper cover frame, improving the test efficiency and reducing the manufacturing cost. At the same time, by changing the weight of the counterweight beam, the upper cover frame can simulate bonnets of different weights, improving the versatility of the bonnet lock test device and further reducing the manufacturing cost.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 It is a three-dimensional diagram of the hood lock testing device of the present application.

[0020] Figure 2 yes Figure 1 A three-dimensional view of the bonnet lock test device with the upper cover frame removed.

[0021] Figure 3 yes Figure 1 A three-dimensional view of the lower and middle base.

[0022] Figure 4 It is a schematic diagram of the positional relationship between the driving mechanism and the upper cover frame after the upper cover frame of the present application covers the base body.

[0023] Figure 5 yes Figure 1 A three-dimensional diagram of the middle drive mechanism being retracted.

[0024] Figure 6 yes Figure 1 A three-dimensional view of the middle drive mechanism extending.

[0025] Figure 7 It is a side view of the hinge assembly of the present application connected to the upper cover frame and the base body.

[0026] Figure 8 yes Figure 7 Side view of the center hinge assembly.

[0027] Fig. 9 It is a partial three-dimensional diagram of the elastic member and the buffer member of the present application arranged on the base body.

[0028] Fig.10 It is a partial three-dimensional diagram of the elastic member and the buffer member of the present application contacting the upper cover frame.

[0029] Fig.11 yes Figure 1 A three-dimensional view of the middle upper cover frame.

[0030] Fig.12 yes Figure 1 A three-dimensional view of the middle cross member.

[0031] Fig.13 It is a schematic diagram of the hood lock assembly of the present application being locked with the main lock component and the auxiliary lock component.

[0032] Description of the accompanying drawings: 1-lower base; 11-base body; 111-base frame; 112-fixed beam; 113-mounting block; 12-driving mechanism; 121-driving member; 122-fixed frame; 1221-base plate; 1222-connecting bracket; 123-driving frame; 1231-driving frame body; 1232-roller; 1233-mounting part; 13-hinge assembly; 131-lower hinge; 132-upper hinge; 133-first connecting rod ;134-second connecting rod;14-lock opening mechanism;141-main lock opening mechanism;142-secondary lock opening mechanism;15-elastic member;16-crossbeam bracket;17-buffer member;2-upper cover frame;21-frame body;22-counterweight beam;221-beam body;222-protective pad;3-hood lock assembly;31-main lock buckle;32-secondary lock hook;4-crossbeam member;41-crossbeam body;42-main lock member;43-secondary lock member;44-unlocking pull rope. DETAILED DESCRIPTION

[0033] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0034] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0035] like Figures 1 to 3As shown, the bonnet lock test device of the present application comprises a lower base 1, an upper cover frame 2, a bonnet lock assembly 3 and a cross beam 4. The upper cover frame 2 is rotatably connected to the lower base 1, the bonnet lock assembly 3 is arranged on the upper cover frame 2, and the cross beam 4 is arranged on the lower base 1. The bonnet lock assembly 3 can be locked to the cross beam 4 when the upper cover frame 2 rotates toward the lower base 1. The bonnet lock test device of the present application is used for, but not limited to, testing the durability of the engine bonnet lock.

[0036] In the present application, the lower base 1 is used to simulate the engine compartment, the upper cover frame 2 is used to simulate the engine cover, the hood lock assembly 3 is the main lock and the secondary lock of the engine cover lock, and the crossbeam 4 is the upper crossbeam of the water tank.

[0037] In one embodiment, the lower base 1 includes a base body 11, a driving mechanism 12 and a hinge assembly 13. The upper cover frame 2 is rotatably connected to the base body 11, the driving mechanism 12 is fixed to the base body 11, and the driving mechanism 12 is also in contact with the upper cover frame 2, and at least drives the upper cover frame 2 to rotate relative to the base body 11.

[0038] Specifically, the base body 11 includes a base frame 111 and a fixed beam 112. The fixed beam 112 is fixedly arranged in the base frame 111, and the driving mechanism 12 is fixed to the fixed beam 112. In the height direction of the lower base 1, at least part of the driving mechanism 12 protrudes out of the base frame 111 and contacts the upper cover frame 2.

[0039] In one embodiment, the driving mechanism 12 is only used to drive the upper cover frame 2 to deviate from the base body 11 and rotate, and when the upper cover frame 2 rotates to the position required for the test, the driving mechanism 12 instantly disengages from the upper cover frame 2, so that the upper cover frame 2 falls toward the base body 11 under the action of its own gravity, thereby causing the hood lock assembly 3 to lock with the cross beam 4. After the hood lock assembly 3 is locked with the cross beam 4, the driving mechanism 12 preferably does not contact the upper cover frame 2. Such a setting can better test the hood lock assembly 3, the cross beam 4, and the locking durability between the hood lock assembly 3 and the cross beam 4 under the influence of the upper cover frame 2's own gravity, and avoid excessive participation of the driving mechanism 12 in the test, which affects the test data.

[0040] In another embodiment, during the process of the upper cover frame 2 rotating away from the base body 11 and the upper cover frame 2 falling toward the base body 11, the driving mechanism 12 is connected to the upper cover frame 2 and applies a boost to the upper cover frame 2. In particular, when the upper cover frame 2 falls toward the base body 11, the driving mechanism 12 can simulate the force applied by people to close the engine cover. Such a setting can better simulate the closing process of the engine cover in real life, and the locking durability of the engine cover lock assembly 3, the cross beam 4, and the engine cover lock assembly 3 and the cross beam 4 is more in line with actual needs.

[0041] Further integration Figures 4 to 6As shown, in one embodiment, the driving mechanism 12 includes a driving member 121, a fixing frame 122 and a driving frame 123. The fixing frame 122 is connected to the fixing beam 112 of the base body 11, one end of the driving frame 123 is rotatably connected to the fixing frame 122, and the other end away from the fixing frame 122 is in contact with the upper cover frame 2. One end of the driving member 121 is rotatably connected to the fixing frame 122, and the other end oppositely disposed is rotatably connected to the driving frame 123, and the driving member 121 is used to drive the driving frame 123 to rotate relative to the fixing frame 122.

[0042] The driving member 121 is preferably a cylinder structure. Of course, the driving member 121 can also be a motor structure, and is located at the connection between the fixed frame 122 and the driving frame 123 to drive the driving frame 123 to rotate relative to the fixed frame 122.

[0043] In one embodiment, the driving frame 123 contacts the upper cover frame 2 only when the upper cover frame 2 rotates away from the base body 11. This arrangement allows the upper cover frame 2 to fall toward the base body 11 under the action of its own gravity.

[0044] The fixing frame 122 includes a base plate 1221 and a connecting bracket 1222 fixed to the base plate 1221. One end of the driving member 121 is fixed to the base plate 1221, and the driving frame 123 is rotatably arranged on the connecting bracket 1222. In order to enable the driving mechanism 12 to better drive the upper cover frame 2 to rotate, the base plate 1221 is arranged on the fixing beam 112, and the base plate 1221 can be adjusted on the fixing beam 112 along the front-back direction of the lower base 1.

[0045] The driving frame 123 includes a driving frame body 1231 and a roller 1232. One end of the driving frame body 1231 is rotatably connected to the connecting bracket 1222, and the roller 1232 is rotatably connected to the other end of the driving frame body 1231, and the roller 1232 is in rolling contact with the upper cover frame 2. In this way, the friction between the driving frame 123 and the upper cover frame 2 is reduced, so that the driving mechanism 12 can more smoothly rotate relative to the base body 11 against the upper cover frame 2.

[0046] The other end of the driving member 121 is connected to the driving frame body 1231. The driving frame body 1231 is provided with a plurality of mounting portions 1233, and the plurality of mounting portions 1233 are arranged at intervals along the length direction of the driving frame body 1231. The end of the driving member 121 can be connected to each mounting portion 1233 one by one, and when the driving member 121 is connected to the mounting portions 1233 at different positions, the rotation angle of the driving frame 123 relative to the fixed frame 122 is also different. Specifically, along the length direction of the driving frame body 1231, the farther the driving member 121 is connected to the mounting portion 1233 from the roller 1232, the larger the angle range of the driving frame 123 driven to rotate relative to the fixed frame 122 when the driving member 121 is extended or retracted.

[0047] In another embodiment, the driving mechanism 12 may be a motor structure, and the driving mechanism 12 is located at the connection between the upper cover frame 2 and the base body 11. Under the action of the driving mechanism 12 in the motor structure, the upper cover frame 2 can rotate relative to the base body 11 through the gear transmission mechanism.

[0048] Further integration Figures 7 and 8 As shown, in one embodiment, the hinge assembly 13 can be folded, and the hinge assembly 13 is respectively connected to the base body 11 and the upper cover frame 2. When the upper cover frame 2 deviates from the base body 11 and rotates, the hinge assembly 13 extends, and under the action of the hinge assembly 13, while the upper cover frame 2 rotates relative to the base body 11, the upper cover frame 2 also moves away from the base body 11 along the height direction of the lower base 1, that is, the upper cover frame 2 turns over above the base body 11 and moves upward along the height direction of the lower base 1. In order to make the upper cover frame 2 rotate away from the base body 11 smoothly, at least two hinge assemblies 13 are provided, and are arranged at intervals on the base body 11.

[0049] The hinge assembly 13 includes a lower hinge 131, an upper hinge 132, a first link 133, and a second link 134. The lower hinge 131 is connected to the base frame 111, and the upper hinge 132 is connected to the upper cover frame 2. One end of the first link 133 is rotatably connected to the lower hinge 131, and the other end is rotatably connected to the upper hinge 132. One end of the second link 134 is rotatably connected to the lower hinge 131, and the other end is rotatably connected to the upper hinge 132. The lower hinge 131 moves synchronously with the upper hinge 132, the first link 133, and the second link 134, so that the hinge assembly 13 can be extended and folded.

[0050] Further integration Figure 2 and Figure 3 , Fig. 9 and Fig.10 As shown, in one embodiment, the lower base 1 includes a lock opening mechanism 14, an elastic member 15, a beam support 16 and a buffer member 17. The lock opening mechanism 14 is arranged on the base body 11, and the lock opening mechanism 14 is used to open the cover lock assembly 3. Further, the lock opening mechanism 14 includes a main lock opening mechanism 141 and a secondary lock opening mechanism 142. The main lock opening mechanism 141 and the secondary lock opening mechanism 142 are both arranged on the base frame 111, and the main lock opening mechanism 141 and the secondary lock opening mechanism 142 both include a cylinder structure.

[0051] The elastic member 15 is preferably arranged on the base body 11. When the upper cover frame 2 is covered on the base body 11, the elastic member 15 abuts against the upper cover frame 2, and the elastic member 15 is in a compressed state. With such an arrangement, when the engine cover is closed, the elastic member 15 can simulate the sealing reaction force of the seal on the engine compartment to the engine cover, thereby making the engine cover lock test device of the present application more accurate in testing the engine cover lock assembly 3, the cross beam 4, and the durability of the locking of the engine cover lock assembly 3 and the cross beam 4.

[0052] Furthermore, the elastic member 15 is located on a side of the base frame 111 away from the hinge assembly 13. In order to make the elastic member 15 better abut the upper cover frame 2, the base body 11 is provided with a mounting block 113, which is located on a side of the base frame 111 away from the hinge assembly 13, and one end of the elastic member 15 is fixed to the mounting block 113.

[0053] The crossbeam bracket 16 and the buffer member 17 are both fixed to the base body 11. The crossbeam member 4 is arranged on the crossbeam bracket 16 so that the hood lock assembly 3 can be locked to the crossbeam member 4 more conveniently. When the upper cover frame 2 is covered on the base body 11, the buffer member 17 contacts the upper cover frame 2 to reduce the impact of the upper cover frame 2 on the base body 11. Further, the buffer member 17 is arranged on the mounting block 113, and in the front-to-back direction of the lower base 1, the buffer member 17 is located behind the elastic member 15.

[0054] Further integration Fig.11 As shown, in one embodiment, the upper cover frame 2 includes a frame body 21 and a counterweight beam 22. The frame body 21 is rotatably connected to the lower base 1, and the counterweight beam 22 is fixed to the frame body 21, and the weight of the counterweight beam 22 can be changed so that the upper cover frame 2 can simulate covers of different weights. In this way, when testing the durability of the cover lock assembly 3, the crossbeam 4, and the cover lock assembly 3 and the crossbeam 4 after locking, even if the cover system and the surrounding environment parts are changed, the weight of the counterweight beam 22 can be changed to meet the experimental requirements for the weight of the upper cover frame 2, thereby improving the adaptability of the cover lock test device, avoiding the redesign of the upper cover frame 2, so as to improve the test efficiency and reduce the manufacturing cost. At the same time, by changing the weight of the counterweight beam 22, the upper cover frame 2 can simulate covers of different weights, which improves the versatility of the cover lock test device and further reduces the manufacturing cost.

[0055] Furthermore, the frame body 21 is rotatably connected to the base frame 111, and the upper hinge 132 of the hinge assembly 13 is connected to the frame body 21. When the hinge assembly 13 is extended under the action of the driving mechanism 12, the frame body 21 rotates relative to the base body 11 and moves away from the base body 11 along the height direction of the lower base 1.

[0056] The other end of the driving frame 123 away from the fixed frame 122 is in contact with the counterweight beam 22. Furthermore, the driving frame 123 is in contact with the counterweight beam 22 only when the frame body 21 deviates from the base body 11 and rotates. The roller 1232 on the driving frame 123 is in rolling contact with the counterweight beam 22, so that the driving mechanism 12 can more smoothly resist the upper cover frame 2 and rotate relative to the base body 11.

[0057] The counterweight beam 22 includes a beam body 221, a protective pad 222, and a plurality of counterweight blocks (not shown). The protective pad 222 is disposed on the beam body 221 and in contact with the drive mechanism 12. Specifically, the roller 1232 is in rolling contact with the protective pad 222. This arrangement prevents the roller 1232 from damaging the beam body. At the same time, the protective pad 222 reduces the friction between the beam body 221 and the roller 1232, so that the roller 1232 can more smoothly rotate relative to the base body 11 against the upper cover frame 2. The counterweight block is detachably connected to the beam body 221.

[0058] In one embodiment, the hood lock assembly 3 is disposed on the frame body 21, and the hood lock assembly 3 includes a main lock buckle 31 and a secondary lock hook 32, both of which can be locked with the cross beam 4, and the main lock buckle 31 and the secondary lock hook 32 are disposed on the frame body 21. The lock opening mechanism 14 is used to open the main lock buckle 31 and the secondary lock hook 32. Further, the main lock opening mechanism 141 is used to open the main lock buckle 31 locked with the cross beam 4, and the secondary lock opening mechanism 142 is used to open the secondary lock hook 32 locked with the cross beam 4.

[0059] Further integration Fig.12 and Fig.13 As shown, in one embodiment, the cross beam 4 includes a cross beam body 41, a main lock 42, a secondary lock 43 and an unlocking pull rope 44. The main lock 42 is provided on the cross beam body 41 and can be locked with the main lock buckle 31. The secondary lock 43 is provided on the cross beam body 41 and can be locked with the secondary lock hook 32. The lock opening mechanism 14 is used to release the lock between the main lock 42 and the main lock buckle 31 and the lock between the secondary lock 43 and the secondary lock hook 32. Further, the main lock opening mechanism 141 is used to release the lock between the main lock 42 and the main lock buckle 31, and the secondary lock opening mechanism 142 is used to release the lock between the secondary lock 43 and the secondary lock hook 32. The unlocking pull rope 44 is connected to the main lock 42, and pulling the unlocking pull rope 44 can be used to release the lock between the main lock 42 and the main lock buckle 31.

[0060] In this application, the height direction of the lower base 1 is the Z-axis direction, the front-back direction of the lower base 1 is the X-axis direction, and the left-right direction of the lower base 1 is the Y-axis direction. Figures 1 to 3 .

[0061] When the hood lock test device of the present application is tested, the main lock opening mechanism 141 is first started, so that the main lock buckle 31 is opened from the main lock member 42. Then the secondary lock opening mechanism 142 is started, so that the secondary lock hook 32 is opened from the secondary lock member 43. Then the driving mechanism 12 is controlled to press against the upper cover frame 2, so that the upper cover frame 2 rotates to the test position. Finally, the driving mechanism 12 is controlled to retract, so that the driving frame 123 is instantly separated from the counterweight beam 22, and the upper cover frame 2 falls under the action of its gravity, so that the main lock buckle 31 is locked to the main lock member 42, and the secondary lock hook 32 is locked to the secondary lock member 43.

[0062] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A bonnet lock testing device, characterized in that: It includes a lower base, an upper cover frame, a hood lock assembly and a crossbeam; the upper cover frame includes a frame body and a counterweight beam; the frame body is rotatably connected to the lower base, and the crossbeam is fixed to the lower base; the hood lock assembly is arranged on the frame body and can be locked to the crossbeam; the counterweight beam is fixed to the frame body, and the weight of the counterweight beam can be changed so that the upper cover frame can simulate hoods of different weights.

2. The bonnet lock testing device according to claim 1, characterized in that: The lower base includes a base body and a driving mechanism; the driving mechanism is fixed to the base body, and the driving mechanism can drive the frame body to rotate relative to the base body.

3. The bonnet lock testing device according to claim 2, characterized in that: The driving mechanism includes a driving member, a fixing frame and a driving frame; the fixing frame is connected to the base body, one end of the driving frame is rotatably connected to the fixing frame, and the other end away from the fixing frame is in contact with the counterweight beam; the driving member is used to drive the driving frame to rotate relative to the fixing frame.

4. The bonnet lock testing device according to claim 3, characterized in that: The driving frame contacts the counterweight beam only when the frame body rotates away from the base body.

5. The bonnet lock testing device according to claim 3, characterized in that: The driving frame comprises a driving frame body and a roller; the roller is arranged on the driving frame body, and the roller is in rolling contact with the counterweight beam.

6. The bonnet lock testing device according to claim 2, characterized in that: The lower base also includes a foldable hinge assembly; the hinge assembly is respectively connected to the frame body and the base body; when the hinge assembly is extended, the frame body rotates relative to the base body and moves away from the base body along the height direction of the lower base.

7. The bonnet lock testing device according to claim 2, characterized in that: The counterweight beam comprises a beam body, a protection pad and a plurality of counterweight blocks; the protection pad is arranged on the beam body and contacts the driving mechanism; the counterweight blocks are detachably connected to the beam body.

8. The bonnet lock testing device according to claim 2, characterized in that: The hood lock assembly includes a main lock buckle and a secondary lock hook, both of which can be locked with the crossbeam member; the crossbeam member includes a crossbeam body and a main lock member and a secondary lock member arranged on the crossbeam body; the main lock member can be locked with the main lock buckle, and the secondary lock member can be locked with the secondary lock hook; the lower base also includes a lock opening mechanism arranged on the base body; the lock opening mechanism is used to release the lock between the main lock member and the main lock buckle and the lock between the secondary lock member and the secondary lock hook.

9. The bonnet lock testing device according to claim 2, characterized in that: The lower base includes an elastic member arranged on the base body; when the upper cover frame covers the base body, the elastic member abuts against the upper cover frame, and the elastic member is in a compressed state.

10. The bonnet lock testing device according to claim 2, characterized in that: The lower base also includes a beam support and a buffer member fixed to the base body; the beam member is arranged on the beam support; when the upper cover frame covers the base body, the buffer member contacts the upper cover frame.

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