Automatic decoupling device and anti-impact performance test platform with such device

Abstract

The present invention discloses an automatic decoupling device and an impact resistance test platform having the device. The automatic decoupling device involved includes a rotating mechanism, a clamping mechanism, and a driving mechanism. The rotating mechanism includes a support shaft and a rotating bracket rotatably disposed on the support shaft. The rotating bracket has a clamping portion and a hook stopping portion. The clamping mechanism is driven by the driving mechanism to clamp or release the clamping portion. The hook stopping portion has a locking state of remaining stationary when the clamping mechanism clamps the clamping portion and a decoupling state of rotating with the rotating bracket when the clamping mechanism releases the clamping portion. Based on the structure of the automatic decoupling device provided by the present invention, in the scenario of being specifically applied to an impact resistance test platform, it has the advantages of a wide applicable pressure range, fast response speed, and high safety and reliability compared with the prior art.

Description

Technical Field

[0001] The present invention relates to the field of impact resistance performance testing, and particularly to an automatic decoupling device and an impact resistance performance testing platform having the device. Background Art

[0002] Currently, industries such as automobiles and ships have increasingly higher requirements for the impact resistance performance of products. Therefore, performing impact resistance performance testing on products has become an essential link before product factory shipment. This link usually requires a large impact platform as a product impact resistance performance testing platform. For a large impact platform, the rapid release of its large-energy energy storage is of great significance to the reliability of the test results.

[0003] In the prior art, a main way to achieve the rapid release of high energy (i.e., large-energy energy storage) is: installing a quick release valve mechanism between the impact cylinder piston and the high-pressure gas source, and by quickly opening the quick release valve within a short time, allowing the high-pressure gas source to act on the piston, thereby realizing the pushing of the impact hammer. However, currently, this kind of quick release valve only targets low pressure and its release speed is also quite limited.

[0004] In view of this, it is necessary to provide an improved technical solution to solve the above problems. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To achieve the above-mentioned invention purpose, the present invention provides an automatic decoupling device, and its specific design is as follows.

[0006] An automatic decoupling device includes a rotating mechanism, a clamping mechanism, and a driving mechanism; the rotating mechanism includes a support shaft and a rotating bracket rotatably arranged on the support shaft, the rotating bracket has a clamping portion and a hook stopping portion, the clamping mechanism is driven by the driving mechanism to clamp or release the clamping portion, and the hook stopping portion has a locking state of remaining stationary when the clamping mechanism clamps the clamping portion and a decoupling state of rotating with the rotating bracket when the clamping mechanism releases the clamping portion.

[0007] Further, the clamping mechanism includes a pair of oppositely arranged clamping rods, and on the same side end of the pair of clamping rods close to the clamping portion, there are formed clamping hooks for clamping the clamping portion by extending towards each other; the clamping mechanism further has a limit seat connected to the driving mechanism to drive the two clamping hooks to approach or separate when the driving mechanism acts.

[0008] Further, the pair of clamping rods are respectively rotatably arranged around two rotating shafts with the same axial direction, the end of the clamping rod close to the clamping portion and the end far from the clamping portion are respectively located on both sides of the corresponding rotating shaft, and the limit seat acts on the end of the clamping rod far from the clamping portion.

[0009] Further, two limiting channels are formed inside the limiting seat, and end portions of a pair of the clamping rods, which are away from the clamping portion, are respectively and movably inserted into the two limiting channels. In a direction perpendicular to the rotating shaft, the width of the portion of the clamping rod located inside the limiting channel is smaller than the width of the corresponding mating position of the limiting channel; the two limiting channels are arranged non-parallelly, and when the limiting seat is driven to move by the driving mechanism, the two limiting channels respectively drive the corresponding clamping rods to rotate.

[0010] Further, in a direction from the pair of clamping rods towards the limiting seat, the two limiting channels show a gradually converging trend, and the distance between the ports of the two limiting channels for the corresponding clamping rods to be inserted and mated is smaller than the distance between the two rotating shafts.

[0011] Further, the driving mechanism is a cylinder.

[0012] Further, the automatic unhooking device further has an automatic reset mechanism for driving the rotating bracket to rotate so that the hook stopping portion is reset to the position when in the locking state.

[0013] Further, the automatic reset mechanism includes a rotary oscillating cylinder and a reset rod, and the reset rod is fixed to the rotary output shaft of the rotary oscillating cylinder to act on the rotating bracket when the rotary output shaft rotates.

[0014] Further, the rotary oscillating cylinder is fixed to the support shaft, and the axis line of the rotary output shaft coincides with the axis line of the support shaft.

[0015] Further, the rotating mechanism further has a bearing provided on the support shaft for the rotating bracket to rotate.

[0016] Further, the automatic unhooking device further has a buffer block provided on the rotation path of the rotating bracket to limit further rotation of the rotating bracket.

[0017] The present invention further provides an impact resistance performance test platform, which includes an impact cylinder and an impact hammer provided at the end of the piston rod of the impact cylinder. The impact resistance performance test platform further has the above-mentioned automatic unhooking device, and the hook stopping portion of the automatic unhooking mechanism acts on the impact hammer in the locking state and releases the impact hammer in the unhooking state.

[0018] Further, the impact resistance performance test platform includes a pair of the automatic unhooking devices, and the pair of automatic unhooking devices are symmetrically arranged on both sides of the impact hammer.

[0019] The beneficial effects of the present invention are as follows: Based on the structure of the automatic decoupling device provided by the present invention, when specifically applied to the scenario of an impact resistance test platform, it has the advantages of a wide applicable pressure range, fast response speed, and high safety reliability compared with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0021] Figure 1 The figure shows a three-dimensional schematic diagram of an implementation structure of the automatic decoupling device of the present invention;

[0022] Figure 2 As shown in Figure 1 a schematic plan view of the shown structure;

[0023] Figure 3 The figure shows a schematic diagram of the cooperation between the rotating bracket and the clamping mechanism;

[0024] Figure 4 The figure shows a schematic cross-sectional view of the rotating bracket after being cut along a plane passing through the axis of the support shaft;

[0025] Figure 5 The figure shows a schematic plan layout diagram of an impact resistance test platform;

[0026] Figure 6 As shown in Figure 5 a three-dimensional schematic diagram of the shown impact resistance test platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, it shows a specific implementation structure of the automatic decoupling device of the present invention. As shown in the figure, the automatic decoupling device includes a rotating mechanism 100, a clamping mechanism 200, and a driving mechanism 300; the rotating mechanism 100 includes a support shaft 11 and a rotating bracket 12 rotatably arranged on the support shaft 11. The rotating bracket 12 has a clamping portion 121 and a hook stopping portion 122. The clamping mechanism 200 is driven by the driving mechanism 300 to clamp or release the clamping portion 121. The hook stopping portion 122 has a locking state of remaining stationary when the clamping mechanism 200 clamps the clamping portion 121 and a decoupling state of rotating with the rotating bracket 12 when the clamping mechanism 200 releases the clamping portion 121.

[0029] Further, referring to Figure 5 、 Figure 6 As shown, the present invention also provides an impact resistance test platform, which includes an impact cylinder 700 and an impact hammer 600 provided at the end of the piston rod (not marked in the figure) of the impact cylinder 700. The impact resistance test platform involved in the present invention also has the above automatic decoupling device. The hook stopping portion 122 of the automatic decoupling mechanism acts on the impact hammer 600 in the locking state and releases the impact hammer 6 in the decoupling state.

[0030] Generally, the impact resistance test platform is used to test the impact resistance of products in industries such as automobiles and ships. Based on this, the impact resistance test platform also has a carrier 800 provided at the front end of the moving direction of the impact hammer 600 for carrying the product to be tested.

[0031] Specifically, in the initial stage of using the impact resistance test platform, the impact cylinder 700 is connected to the high-pressure air source, and the high pressure acts on the impact hammer 600 through the piston rod. At this time, the clamping mechanism 200 of the automatic decoupling device forms a clamping on the clamping portion 121 of the rotating bracket 12, and then acts on the impact hammer 600 through the hook stopping portion 122 to make the impact hammer 600 in a stationary state; when it is necessary to impact the product on the carrier 800, the driving mechanism 300 is used to drive the clamping mechanism 200, so that the clamping mechanism 200 releases the clamping portion 121, and the rotating bracket 12 can rotate freely relative to the support shaft 11. At this time, the impact hammer 600 quickly pushes open the hook stopping portion 122 of the rotating bracket 12 and decouples from the hook stopping portion 122 under the action of the high-pressure air source, and then forms a high-energy impact on the carrier 800 through the impact portion 61 of the impact hammer 600.

[0032] Based on the structure of the automatic decoupling device provided by the present invention, in the scenario of specifically applying to the impact resistance test platform, the decoupling action between the impact hammer 600 and the hook stopping portion 122 is achieved instantaneously, and there is no air pressure loss during this process. It has the advantages of a wide applicable pressure range, fast response speed, and high safety reliability compared with the prior art.

[0033] Further, referring toFigure 5 , Figure 6 As shown in Figure 6 , the anti-impact performance test platform involved in this specific embodiment includes a pair of automatic decoupling devices, which are symmetrically arranged on both sides of the impact hammer 600. During the specific use process, the hook stopping parts 122 of the two rotating brackets 12 simultaneously form a resistance against both sides of the impact hammer 600. The pair of automatic decoupling devices are arranged symmetrically, and during the energy storage process of the impact cylinder 700, the impact hammer 600 can be relatively stably maintained in a stationary state.

[0034] For a better understanding of the present invention, the following further elaborates in detail on a specific implementation structure of the automatic decoupling device of the present invention in combination with Figures 1-4 :

[0035] As shown in the figure, the clamping mechanism 200 includes a pair of relatively arranged clamping rods, namely the first clamping rod 211 and the second clamping rod 212; on the same side end of the first clamping rod 211 and the second clamping rod 212 close to the clamping part 121, they extend towards each other to form a clamping hook for clamping the clamping part 121. Among them, the clamping hook includes a first clamping hook 2110 formed at one side end of the first clamping rod 211 and a second clamping hook 2120 formed at one side end of the second clamping rod 212. The clamping mechanism 200 further has a limiting seat 23 connected to the driving mechanism 300 to drive the first clamping hook 2110 and the second clamping hook 2120 to approach or move away when the driving mechanism 300 operates.

[0036] In this specific embodiment, the clamping part 121 is a T-shaped head, and both sides of the T-shaped head respectively have parts (not marked in the figure) that cooperate with the first clamping hook 2110 and the second clamping hook 2120.

[0037] Furthermore, during the specific implementation process of the illustrated embodiment, the first clamping rod 211 and the second clamping rod 212 are respectively rotatably arranged around the first rotating shaft 221 and the second rotating shaft 222. Among them, the axial directions of the first rotating shaft 221 and the second rotating shaft 222 are the same. The ends of the two clamping rods (the first clamping rod 211 and the second clamping rod 212) close to the clamping part 121 and the ends far from the clamping part 121 are respectively located on both sides of the corresponding rotating shafts (the first rotating shaft 221 and the second rotating shaft 222), and the limiting seat 23 acts on the ends of the clamping rods (the first clamping rod 211 and the second clamping rod 212) far from the clamping part 121.

[0038] It can be understood that in other embodiments of the present invention, the first clamping rod 211 and the second clamping rod 212 can also approach or move away between the first clamping hook 2110 and the second clamping hook 2120 through relative translation, rather than through rotation. Specifically, no further elaboration is made here.

[0039] To better show the cooperation relationship between the limit seat 23 and the clamping rod in the illustrated embodiment, Figure 3 the upper end cover of the limit seat 23 is removed. Refer to Figure 3 As shown, in this specific embodiment, two limit channels are formed inside the limit seat 23, namely the first limit channel 231 and the second limit channel 232. The end parts of the first clamping rod 211 and the second clamping rod 212 far from the clamping part 121 are respectively inserted into the first limit channel 231 and the second limit channel 232 movably. In a direction perpendicular to the rotating shaft (the first rotating shaft 221 or the second rotating shaft 222), the width of the part of the first clamping rod 211 located in the first limit channel 231 is smaller than the width of the corresponding matching position of the first limit channel 231, and the width of the part of the second clamping rod 212 located in the second limit channel 232 is smaller than the width of the corresponding matching position of the second limit channel 232; the first limit channel 231 and the second limit channel 232 are not arranged in parallel. When the limit seat 23 is driven to move by the driving mechanism 300, the first limit channel 231 and the second limit channel 232 respectively drive the first clamping rod 211 and the second clamping rod 212 to rotate.

[0040] Based on the above settings, the clamping rod and the corresponding limit channel are in a loose fit, which can ensure that relative movement can be realized between the limit seat 23 and the two clamping rods, and the rotation of the two clamping rods can be driven during the movement.

[0041] Further, in this embodiment, in the direction from a pair of clamping rods to the limit seat 23, the first limit channel 231 and the second limit channel 232 show a gradually approaching trend, and the distance between the port of the first limit channel 231 for the first clamping rod 211 to be inserted and the port of the second limit channel 232 for the second clamping rod 212 to be inserted is smaller than the distance between the first rotating shaft 221 and the second rotating shaft 222. Such a setting method can make the limit seat 23 have a relatively small size.

[0042] In other embodiments of the present invention, the first limit channel 231 and the second limit channel 232 can also have other setting methods. For example, in the direction from a pair of clamping rods to the limit seat 23, the first limit channel 231 and the second limit channel 232 show a gradually separating trend, and no further description will be made here specifically.

[0043] In this specific embodiment, the driving mechanism 300 is a cylinder. As Figure 1 、 Figure 2 shown, the cylinder includes a cylinder body 31 and a power output rod 32 that telescopically arranges relative to the cylinder body 31. The power output rod 32 is directly or indirectly connected to the limit seat 23 through other connecting parts.

[0044] Based on the above settings, when the cylinder is started, the power output rod 32 moves telescopically relative to the cylinder block 31, thereby driving the limit seat 23 to move: when the limit seat 23 moves away from the pair of clamping rods, the first clamping hook 2110 and the second clamping hook 2120 move relatively closer to each other, and can form clamping fixation on the clamping portion 121. At this time, the impact hammer 600 can be held in a stationary state by the hook portion 122; when the limit seat 23 moves closer to the pair of clamping rods, the first clamping hook 2110 and the second clamping hook 2120 move relatively farther away from each other. When the distance reaches a certain set value, the clamping portion 121 can be instantaneously released, thereby causing the impact hammer 600 and the hook portion 122 to become decoupled.

[0045] Refer to Figure 1 、 Figure 2 As shown, the automatic decoupling device involved in this specific embodiment further has a base 400. Among them, the first rotating shaft 221 and the second rotating shaft 222 are both fixed to the base 400, and the cylinder block 31 is also fixed to the base 400 through a connecting seat 33. Thereby, the clamping mechanism 200 and the driving mechanism 300 are formed into an integrated component with relatively stable structure, which is beneficial to the assembly of the impact resistance test platform.

[0046] As a preferred implementation structure of the present invention, the automatic decoupling device further has an automatic reset mechanism for driving the rotating bracket 12 to rotate so that the hook portion 122 is reset to the position where it is in the locked state. Based on this setting, after the clamping mechanism 200 completes one release of the clamping portion 121, the automatic reset mechanism can drive the rotating bracket 12 to automatically return to its original position, and then the clamping mechanism 200 can clamp the clamping portion 121 again. The process can be fully automated, avoiding excessive manual participation, and ensuring the convenience and safety during the use of the impact resistance test platform.

[0047] Specifically, the automatic reset mechanism in this embodiment includes a rotary oscillating cylinder 51 and a reset rod 52. Among them, the reset rod 52 is fixed to the rotary output shaft of the rotary oscillating cylinder 51 to act on the rotating bracket 12 when the rotary output shaft rotates.

[0048] To avoid damage to the rotating bracket 12 when the reset rod 52 drives the rotating bracket 12 to reset, an anti-wear component 123 can be installed at the position where the rotating bracket 12 is in contact and cooperation with the reset rod 52.

[0049] To further reduce the occupied space of the automatic decoupling device, the rotary oscillating cylinder 51 in this embodiment is fixed to the support shaft 11, and the axis line of the rotary output shaft coincides with the axis line of the support shaft 11. Refer to Figure 4 As shown in, the rotary oscillating cylinder 51 is connected and fixed to the top of the support shaft 11 through a mounting seat 53, and the axis line of the rotary output shaft of the rotary oscillating cylinder 51 and the axis line of the support shaft 11 are located on the same straight line.

[0050] To ensure that the decoupling between the hook stop portion 122 and the impact hammer 600 is completed instantaneously, refer to Figure 4 As shown, the rotating mechanism 100 further has a bearing 13 provided on the support shaft 11 for the rotating bracket 12 to rotate, so that the rotating bracket 12 can rotate more smoothly.

[0051] Combined with Figure 5 、 Figure 6 As shown, in some other embodiments of the present invention, the automatic decoupling device further has a buffer block 14 provided on the rotation path of the rotating bracket 12 to limit the further rotation of the rotating bracket 12. The buffer block 14 is usually made of an elastic material. Based on its limitation of the rotation of the rotating bracket 12, the rotation range of the rotating bracket 12 can be effectively limited within a necessary rotation angle.

[0052] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0053] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic unhooking device, characterized in that: The invention comprises a rotating mechanism, a clamping mechanism and a driving mechanism; the rotating mechanism comprises a support shaft and a rotating bracket rotatably arranged on the support shaft, the rotating bracket having a clamping portion and a hooking portion, the clamping mechanism is driven by the driving mechanism to clamp or release the clamping portion, and the hooking portion has a locked state in which it remains stationary when the clamping mechanism clamps the clamping portion, and a disengaged state in which it rotates with the rotating bracket when the clamping mechanism releases the clamping portion; The clamping mechanism includes a pair of clamping rods arranged opposite to each other, with the ends of the pair of clamping rods on the same side close to the clamping portion extending toward each other to form clamping hooks for clamping the clamping portion; the clamping mechanism also has a limit seat connected to the driving mechanism to drive the two clamping hooks to move closer or farther when the driving mechanism is activated; The pair of clamping rods are respectively rotatably arranged around two rotating shafts with the same axial direction, and the ends of the clamping rods close to the clamping portion and the ends away from the clamping portion are respectively located on both sides of the corresponding rotating shafts, and the limit seats act on the ends of the clamping rods away from the clamping portion; Two limiting channels are formed inside the limiting seat, and the ends of a pair of clamping rods away from the clamping part are movably inserted into the two limiting channels respectively. In a direction perpendicular to the rotating shaft, the width of the part of the clamping rod located in the limiting channel is smaller than the width of the corresponding matching position of the limiting channel; the two limiting channels are arranged non-parallel, and when the limiting seat is driven to move by the driving mechanism, the two limiting channels respectively drive the corresponding clamping rods to rotate.

2. The automatic unhooking device according to claim 1, characterized in that: In the direction from the pair of clamping rods to the limiting seat, the two limiting channels tend to gradually approach each other, and the distance between the ports of the two limiting channels for the corresponding clamping rods to be inserted and matched is smaller than the distance between the two rotating shafts.

3. The automatic unhooking device according to any one of claims 1 to 2, characterized in that: The driving mechanism is a cylinder.

4. The automatic unhooking device according to any one of claims 1 to 2, characterized in that: The automatic unhooking device further comprises an automatic resetting mechanism for driving the rotating bracket to rotate so as to reset the hook stop portion to the position where it is in the locked state.

5. The automatic unhooking device according to claim 4, characterized in that: The automatic reset mechanism includes a rotary swing cylinder and a reset rod, wherein the reset rod is fixed to a rotary output shaft of the rotary swing cylinder to act on the rotary bracket when the rotary output shaft rotates.

6. The automatic unhooking device according to claim 5, characterized in that: The rotary oscillating cylinder is fixed to the support shaft, and the axis center line of the rotary output shaft coincides with the axis center line of the support shaft.

7. The automatic unhooking device according to any one of claims 1-2, characterized in that: The rotating mechanism further comprises a bearing arranged on the supporting shaft for rotating the rotating bracket.

8. The automatic unhooking device according to any one of claims 1-2, characterized in that: The automatic unhooking device further comprises a buffer block arranged on the rotation path of the rotating bracket to limit further rotation of the rotating bracket.

9. An impact resistance test platform, comprising an impact cylinder and an impact hammer arranged at the end of the piston rod of the impact cylinder, characterized in that: The impact resistance performance testing platform further comprises an automatic unhooking device according to any one of claims 1 to 8, wherein the hook stop portion of the automatic unhooking device acts on the impact hammer in a locked state and releases the impact hammer in an unhooked state.

10. The impact resistance testing platform according to claim 9, characterized in that: The impact resistance testing platform includes a pair of automatic unhooking devices, which are symmetrically arranged on both sides of the impact hammer.

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