Pallet impact test device and damper thereof

Abstract

This invention discloses a trolley impact testing device and its damper. The damper includes a base, a first fastener, a movable component, a second fastener, and an adjusting component. The base extends along a first direction. The first fastener is connected to the base. The movable component is movably connected to the base along a second direction. The second fastener is connected to the movable component. The adjusting component is connected to the movable component and the base, and can operably adjust the position of the second fastener.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test devices, in particular to a trolley impact test device and a damper thereof. BACKGROUND

[0002] AEB braking (automatic emergency braking) refers to a system that actively brakes to avoid or mitigate a collision when the vehicle is about to collide with a front target. The introduction of AEB is of great significance to improving road traffic safety, reducing accidents by 27% per year. However, while AEB reduces the speed of the vehicle, it will also change the motion posture of the occupant, such as the occupant's chest moving forward to shorten the distance between the steering wheel or instrument panel and the interior, the occupant's legs moving forward to change the relative relationship between the lower leg and the instrument panel and the foot pedal. Since the injury of the occupant in the collision is closely related to the motion posture of the occupant, the optimization process of the passive safety restraint system is to adjust the motion posture of the occupant in the collision. Therefore, in a frontal collision accident, when there is AEB action, the protection effect of the current restraint system will certainly change relative to the expected development.

[0003] Based on the above reasons, it is necessary to simulate the trolley deceleration process caused by AEB action to study the restraint state of the occupant in the presence of AEB process, but the prior art does not have a trolley deceleration test device caused by AEB action. SUMMARY

[0004] The purpose of the present application is to provide a trolley impact test device and a damper thereof to solve the problems of the prior art.

[0005] To solve the above technical problems, an embodiment of the present application provides a damper for trolley impact test, comprising:

[0006] a base extending in a first direction;

[0007] a first fastener connected with the base;

[0008] a moving part movably connected with the base in a second direction;

[0009] a second fastener connected with the moving part;

[0010] an adjusting part connected with the moving part and the base and operable to adjust the position of the second fastener.

[0011] In one embodiment, the base comprises:

[0012] a bottom plate extending in the first direction;

[0013] a boss connected to a top surface of the bottom plate;

[0014] the moving piece is movably connected to the bottom plate;

[0015] the adjusting piece is connected to the boss and the moving piece.

[0016] In one embodiment, the adjusting piece is a bolt;

[0017] the boss and the moving piece are respectively provided with threaded holes arranged opposite to each other.

[0018] In one embodiment, the top surface of the bottom plate is provided with a first sliding groove extending along the second direction;

[0019] a bottom portion of the moving piece is located in the first sliding groove.

[0020] In one embodiment, at least two bosses are arranged side by side and spaced apart along the second direction;

[0021] the damper further comprises a cover plate connected to the at least two bosses and a bottom surface of the cover plate is spaced apart from the bottom plate by a preset distance;

[0022] the cover plate is provided with a first avoiding groove for avoiding the second fastener.

[0023] In one embodiment, the bottom surface of the cover plate is further provided with a second sliding groove;

[0024] a top portion of the moving piece is located in the second sliding groove.

[0025] In one embodiment, two bosses are arranged side by side and spaced apart along the second direction;

[0026] the damper further comprises a cover plate connected to the two bosses and a bottom surface of the cover plate is spaced apart from the bottom plate by a preset distance;

[0027] the bottom surface of the cover plate is provided with a second sliding groove extending along the second direction and at least a portion of the second sliding groove is aligned with the first sliding groove in up and down directions;

[0028] a top portion of the moving piece is located in the second sliding groove;

[0029] a top wall of the second sliding groove is provided with a first avoiding groove penetrating through the cover plate, the first avoiding groove extending along the second direction for avoiding the second fastener.

[0030] In one embodiment, the moving piece is provided with a through hole penetrating through the moving piece along the first direction;

[0031] a top surface of the moving piece is provided with a pin hole penetrating through the through hole;

[0032] The second fastener is a pin post connected with the pin hole.

[0033] In one embodiment, the first fastener is connected with the cover plate.

[0034] In one embodiment, the cover plate is provided with a pin hole.

[0035] The first fastener is a pin post connected with the pin hole.

[0036] In one embodiment, the cover plate is provided with at least two pin holes, and the at least two pin holes are arranged side by side along the first direction.

[0037] The at least two first fasteners are respectively connected with the at least two pin holes and the bottom plate.

[0038] The projection of the second fastener along the second direction is located between the projections of the at least two first fasteners along the second direction.

[0039] In one embodiment, the cover plate is provided with a plurality of pin holes, at least two of which are arranged side by side along the first direction, and at least another pin hole is arranged staggered with the rest of the pin holes along the first direction.

[0040] The plurality of first fasteners are respectively connected with the plurality of pin holes and the bottom plate.

[0041] The projection of the second fastener along the second direction is located between the projections of the plurality of first fasteners along the second direction.

[0042] In one embodiment, the bottom plate is provided with a second avoiding slot avoiding the second fastener, and the second avoiding slot extends along the second direction.

[0043] The present application also relates to a trolley impact test device, comprising:

[0044] A track extending along the first direction.

[0045] Two above-mentioned dampers, and the two dampers are located on both sides of the track along the second direction.

[0046] A reinforcing bar crossing the track, one end of the reinforcing bar is located between at least one first fastener and one second fastener of one of the dampers and is arranged in a bent manner, and the other end of the reinforcing bar is located between at least one first fastener and one second fastener of the other damper and is arranged in a bent manner.

[0047] A trolley movably connected with the track.

[0048] The damper of the application has simple structure, convenient operation and small space occupation, so that the deceleration trolley can conveniently reproduce the braking effect of AEB. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 and Figure 2 is a perspective view of the damper of an embodiment of the application.

[0050] Figure 3 and Figure 4 is Figure 1 is a perspective view of the base in the embodiment shown.

[0051] Figure 5 is a perspective view of the moving part of an embodiment of the application.

[0052] Figure 6 and Figure 7 is Figure 1 is a perspective view of the cover plate in the embodiment shown.

[0053] Figure 8 and Figure 9 is an exploded view of the trolley impact test device of an embodiment of the application.

[0054] Reference signs: 100, damper; 1, base; 11, bottom plate; 111, first sliding groove; 112, second pin hole; 113, second avoiding groove; 12, boss; 121, moving channel; 13, first threaded hole; 2, moving part; 21, second threaded hole; 22, third pin hole; 23, through hole; 3, first fastener; 4, second fastener; 5, cover plate; 51, first pin hole; 52, first avoiding groove; 53, second sliding groove; 6, steel bar; 61, first section; 62, middle section; 63, tail section; 7, first column; 8, second column; 9, adjusting part; 200, trolley impact test device. DETAILED DESCRIPTION

[0055] In order to make the objects, technical solutions and advantages of the application clearer, the embodiments of the application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed in the claims of the present application can be realized even without these technical details and various changes and modifications based on the following embodiments.

[0056] Unless otherwise required by the context, the words “comprise” and variations such as “comprising”, and “comprises” throughout the specification and claims, shall be understood to encompass the terms “including” and “contain” as alternatives, i.e., should be interpreted to mean “including, but not limited to”.

[0057] The embodiments of the present application will be described in detail with reference to the drawings, so as to make clear the purpose, features and advantages of the present application. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present application, but only to illustrate the essential spirit of the technical solutions of the present application.

[0058] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0059] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. It should be noted that the term "comprising" as used in this specification is used in the inclusive sense of "including" and "comprising" and not with an excluding or exhaustive sense.

[0060] In the following description, for the purposes of clarity, numerous directional terms are used, such as forward, rearward, left, right, outer, inner, upward, downward, etc. These directional terms should be understood in the context of the orientation of the figures in which the embodiments are shown. However, it will be understood that the embodiments can be practiced in other orientations than those depicted and described.

[0061] The present application relates to a damper 100 for trolley impact test, the damper 100 comprising a base 1, a first fastener 3, a moving part 2, a second fastener 4 and an adjusting part 9, wherein the base 1 extends along a first direction X, and the first fastener 3 is connected with the base 1. The moving part 2 is movably connected with the base 1, and the moving part 2 is movable along a second direction Y. The second fastener 4 is connected with the moving part 2.

[0062] The adjusting part 9 is connected with the moving part 2 and the base 1, and the adjusting part 9 can fix the moving part 2 and the base 1 after the moving part 2 is moved.

[0063] The second fastener 4 can move with the moving part 2 to clamp one end of the reinforcing bar 6 between the first fastener 3 and the second fastener 4, and the reinforcing bar 6 is clamped, bent and fixed by the second fastener 4 after the moving part 2 is moved to a predetermined position.

[0064] In the test, the base 1 of the damper 100 is fixed on the ground or a platform, one end of the reinforcing bar 6 is fixed on the damper 100, and the other end is fixed on another damper 100, and the two dampers 100 are installed on both sides of the track along the second direction Y, and the trolley collides with the reinforcing bar 6 at a preset speed along the track, and when the trolley passes, the reinforcing bar 6 will generate a nearly constant deceleration resistance to the trolley. The number of reinforcing bars 6 placed can adjust the size of the resistance to the trolley. The damper 100 is low in cost and easy to install, can simulate the trolley deceleration process caused by the AEB action, and can study the restraint state of the passenger in the AEB process.

[0065] Specifically, the base 1 includes a bottom plate 11 and a boss 12. In a specific embodiment, the bottom plate 11 is a rectangular plate and extends along the first direction. Four corners of the bottom plate 11 are respectively provided with threaded holes. The bottom plate 11 can be connected with the ground or fixedly connected with a platform through cooperation of bolts and the threaded holes on the bottom plate.

[0066] The boss 12 is located on one side of the bottom plate 11 along the second direction. The boss 12 protrudes from the top surface of the bottom plate 11. The moving piece 2 is on the top surface of the bottom plate 11 and can move along the second direction. When the boss 12 moves to a preset position, the adjusting piece 9 can fix the boss 12 and the moving piece 2.

[0067] In a preferred embodiment, the adjusting piece 9 is threadedly connected with the boss 12 and the moving piece 2. Specifically, as shown in Figure 3 and Figure 5 The end of the boss 12 and the moving piece 2 facing the boss 12 is respectively provided with a threaded hole. The threaded hole of the boss 12 is defined as a first threaded hole 13, and the threaded hole of the moving piece 2 is defined as a second threaded hole 21. The adjusting piece 9 is a bolt and is threadedly connected with the first threaded hole 13 and the second threaded hole 21, respectively. After the reinforcing bar is inserted, the moving piece 2 is moved and the reinforcing bar is bent. The moving piece is fixed by the adjusting piece, so that the reinforcing bar is fixed on the damper.

[0068] Preferably, the top surface of the bottom plate 11 is provided with a first sliding groove 111 extending along the second direction. The bottom of the moving piece 2 is located in the first sliding groove 111, and the middle part and the top part are respectively located on the top surface of the bottom plate 11. The first sliding groove 111 can play a guiding role and can avoid tilting of the moving piece 2.

[0069] Preferably, the two bosses 12 are arranged side by side and spaced apart along the second direction. Preferably, the two bosses 12 are arranged at the same height. The top surfaces of the two bosses 12 are covered with a cover plate 5. The cover plate 5 is fixedly connected with the two bosses 12 through bolts. Due to the supporting action of the bosses 12, the bottom surface of the cover plate 5 and the bottom plate 11 have a certain spacing. The spacing allows multiple reinforcing bars 6 to pass through.

[0070] The first fastener 3, the cover plate 5, and the base plate 11 are respectively fixedly connected. Preferably, the first fastener 3 is a pin. The cover plate 5 and the base plate 11 are respectively provided with pin holes for fixing the first fastener 3. The pin hole of the cover plate 5 is defined as the first pin hole 51, and the pin hole of the base plate 11 is defined as the second pin hole 112.

[0071] The cover plate 5 is provided with a first clearance groove 52 to avoid the second fastener 4. The first clearance groove 52 extends along the second direction, so that the second fastener 4 can move in the second direction within the first clearance groove 52.

[0072] Preferably, the bottom surface of the cover plate 5 is also provided with a second sliding groove 53. The second sliding groove 53 extends along the second direction. At least a part of the second sliding groove 53 is aligned with the first sliding groove 111 in the vertical direction. The top of the moving part 2 is located in the second sliding groove 53, the bottom is located in the first sliding groove 111, and the middle part is located in the gap area between the cover plate 5 and the bottom plate 11. The cooperation between the second sliding groove 53 and the first sliding groove 111 makes the moving part 2 more stable.

[0073] The first clearance groove 52 is formed by recessing the top surface of the second slide groove 53 into the top wall of the moving part 2, and the second fastener can move within the first clearance groove 52.

[0074] Of course, the first slide groove 111 may not be provided on the base plate 11, but only the second slide groove 53 may be provided on the cover plate 5. The bottom end of the moving part 2 is located on the top surface of the base plate 11, and the top end is located in the second slide groove 53, moving along the second slide groove 53.

[0075] exist Figure 3 In the embodiment shown, since the two protrusions 12 have a certain width, the distance between the two protrusions 12 is small. In order to avoid restricting the movement space of the moving part 2 and increase stability, a moving channel 121 is also opened on the side of the two protrusions 12 facing each other. The moving channel 121 is connected to the first slide groove 111 of the bottom plate 11 and the second slide groove 53 of the top plate, so as to facilitate the moving part 2 to move along the second direction.

[0076] The movable component 2 has a through hole 23 on one side along the first direction, and the through hole 23 penetrates the movable component 2 along the first direction. The top surface of the movable component 2 has a pin hole, defined as the third pin hole 22, which penetrates the movable component 2 vertically. The middle portion of the third pin hole 22 is located within the through hole 23, meaning that the third pin hole 22 passes through the through hole 23. The second fastener 4 is a pin connected to the third pin hole 22, and the second fastener 4 passes through the through hole 23.

[0077] As a preferred embodiment, the cover plate 5 is provided with two first pin holes 51, which are arranged side by side along a first direction. The two first fasteners 3 are respectively connected to at least two first pin holes 51 and two second pin holes 112 of the base plate 11.

[0078] The second fastener 4 is located between the two first pin holes 51, and after the second fastener 4 is fixed along the moving part, it is offset from the two first pin holes 51 along the first direction. That is, the projection of the second fastener 4 along the second direction is located between the projections of the two first fasteners 3 along the second direction.

[0079] The reinforcing bar 6 passes between one of the first fasteners 3 and the second fastener 4, and between the other first fastener 3 and the second fastener 4. The reinforcing bar 6 is V-shaped and partially fitted outside the second fastener 4, and is locked by the two first fasteners 3.

[0080] Preferably, such as Figure 1 and Figure 8 As shown, the cover plate 5 is provided with three first pin holes 51, and the bottom plate 11 is provided with three second pin holes 112 respectively aligned with the three first pin holes. The three first fasteners 3 are respectively fixedly connected to the three first pin holes 51 and the three second pin holes 112.

[0081] Of the three first fasteners 3, two of them are arranged side by side along the first direction. After the second fastener is fixed, the remaining first fastener 3 and the second fastener 4 are arranged basically side by side or slightly offset along the first direction. That is to say, the reinforcing bar 6 is arranged in a Z-shape between the three first fasteners 3 and the second fastener 4, and is fixed by the three first fasteners 3 and the second fastener 4.

[0082] Optionally, the cover plate 5 may have multiple first pin holes 51, with at least two first pin holes 51 arranged side by side along the first direction, and at least one other first pin hole 51 offset from the remaining first pin holes 51 along the first direction and aligned with the second fastener 4 along the first direction, or they may be offset. The multiple first fasteners 3 are respectively connected to the multiple first pin holes 51 and the multiple second pin holes 112 of the base plate 11.

[0083] The projection of the second fastener 4 along the second direction is located between the projections of the multiple first fasteners 3 along the second direction, and the reinforcing bar 6 can be fixed in a Z-shaped bend.

[0084] The base plate 11 is provided with a second clearance groove 113 to avoid the bottom of the second fastener 4. The second clearance groove 113 extends along the second direction, and the bottom of the second fastener 4 can move along the second direction within the second clearance groove 113.

[0085] The present invention also relates to a bogie impact testing device 200, such as... Figure 8 and Figure 9 As shown, the trolley impact test device 200 includes the aforementioned guide rail, steel bar 6, trolley moving along the guide rail, and two dampers 100.

[0086] The track is fixed to the bottom surface and extends along the first direction. Two dampers 100 are located on both sides of the guide rail along the second direction, and the two dampers 100 are arranged side by side along the second direction.

[0087] The reinforcing bar 6 includes a first section 61, a middle section 62, and a last section 63. The middle section 62 crosses the track and its two ends are connected to the front ends of the first section 61 and the last section 63, respectively.

[0088] The rear end of the first segment 61 is located between three first fasteners 3 and one second fastener 4 in one of the dampers 100 and is bent, thereby being fixed by the damper 100. The rear end of the tail segment 63 is located between three first fasteners 3 and one second fastener 4 in another damper 100 and is bent, and is fixed by the damper 100.

[0089] The trolley is movably connected to the track. The trolley moves from back to front along the first direction and hits the steel bar 6. The trolley can generate a deceleration of about 7 m / s2, which is the deceleration after emergency braking.

[0090] In use, first fix the base 1 to the ground, install the movable part 2 in the first slide groove 111, and fix the cover plate 5 on the two protrusions 12. The two first fasteners are aligned along the first direction to form the first column 7. Move the second fastener to align it with another first fastener along the first direction to form the second column 8. There is a channel extending along the first direction between the first column 7 and the second column 8; that is, the rear end of the first segment 61 of the reinforcing bar 6 is inserted into the channel between the first column 7 and the second column 8. Then move the second fastener so that the rear end of the first segment 61 is bent and fixed. The fixing method of the tail segment 63 is the same as that of the first segment 61, and will not be described again.

[0091] The damper 100 of the present invention has a reinforcing bar 6 passing between the cover plate 5 and the pin inserted in the movable member 2. The inserted reinforcing bar 6 can deform as the second fastener 4 on the movable member 2 moves laterally.

[0092] The damper 100 of the present invention has a simple structure, is easy to operate, and occupies little space, making it easy for the deceleration trolley to reproduce the braking effect of AEB.

[0093] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0094] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0095] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A damper for use in trolley impact tests, characterized in that, include: The base includes: A base plate, the base plate extending along a first direction and the top surface of the base plate having a first groove extending along a second direction; Two protrusions are arranged side by side at intervals along the second direction and connected to the top surface of the base plate; The first fastener is connected to the base; A movable component, the bottom of which is located within the first groove and is movably connected to the base along a second direction; The second fastener is connected to the moving part; An adjusting member is connected to the movable member and the boss, and is operably adjustable to adjust the position of the second fastener; A cover plate, wherein the cover plate is connected to the two protrusions and the bottom surface of the cover plate is spaced apart from the bottom plate by a predetermined distance; The cover plate is provided with at least two pin holes, and the at least two pin holes are arranged side by side along the first direction; At least two of the first fasteners are respectively connected to at least two of the pin holes and the base plate; The projection of the second fastener along the second direction lies between at least two projections of the first fasteners along the second direction.

2. The damper according to claim 1, characterized in that, The adjusting component is a bolt; The boss and the movable part are respectively provided with threaded holes that are arranged opposite to each other.

3. The damper according to claim 1, characterized in that, At least two of the bosses are arranged side-by-side at intervals along the second direction; The damper also includes a cover plate, which is connected to at least two of the bosses and the bottom surface of the cover plate is spaced apart from the bottom plate by a predetermined distance. The cover plate is provided with a first clearance groove to avoid the second fastener.

4. The damper according to claim 3, characterized in that, The bottom surface of the cover plate is also provided with a second sliding groove; The top of the movable component is located within the second groove.

5. The damper according to claim 1, characterized in that, The bottom surface of the cover plate is provided with a second sliding groove, which extends along the second direction and at least a portion of it is vertically aligned with the first sliding groove. The top of the moving part is located within the second groove; The top wall of the second slide is provided with a first clearance groove that penetrates the cover plate. The first clearance groove extends along the second direction and is used to avoid the second fastener.

6. The damper according to claim 5, characterized in that, The movable component is provided with a through hole, which penetrates the movable component along the first direction; The top surface of the movable part is provided with a pin hole, which passes through the through hole; The second fastener is a pin that connects to the pin hole.

7. The damper according to claim 5, characterized in that, The first fastener is connected to the cover plate.

8. The damper according to claim 5, characterized in that, The first fastener is a pin connected to the pin hole.

9. The damper according to claim 8, characterized in that, The cover plate is provided with a plurality of pin holes, at least two of the pin holes are arranged side by side along the first direction, and at least one of the pin holes is staggered from the rest of the pin holes along the first direction; The plurality of first fasteners are respectively connected to the plurality of pin holes and the base plate; The projection of the second fastener along the second direction lies between the projections of the plurality of first fasteners along the second direction.

10. The damper according to claim 3, characterized in that, The base plate is provided with a second clearance groove to avoid the second fastener, and the second clearance groove extends along the second direction.

11. A bogie impact testing device, characterized in that, include: A track, which extends along the first direction; Two dampers as claimed in claim 1, wherein the two dampers are located on both sides of the track along the second direction; A reinforcing bar, which spans the track, has one end located between at least one first fastener and one second fastener of one of the dampers and is bent, and the other end located between at least one first fastener and one second fastener of the other damper and is bent. A trolley, which is movably connected to the track.

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