Impact device and impact platform

Abstract

An impact device and an impact platform, the impact device (4) comprising an impact member (41), a fixing base (42) spaced apart from the impact member (41), a support rod (43) passing through the fixing base (42) and fixedly connected to the impact member (41), a first clamping member (44) provided on the impact member (41), and a second clamping member (45) provided on the fixing base (42). The impact device (4) has a first state in which the first clamping member (44) is away from the second clamping member (45), and a second state in which the first clamping member (44) clamps in a single direction relative to the second clamping member (45) so as to prevent the impact member (41) from being away from the fixing base (42). In the impact device (4) and the impact platform (100), the first clamping member (44) and the second clamping member (45) are provided for clamping, and using physical structures for locking achieves higher reliability, thus effectively avoiding a secondary impact on objects under test.

Description

Impact device and impact platform Technical Field

[0001] The invention relates to an impact device and an impact platform. Background Art

[0002] At the current stage, with the increasing popularity of new energy vehicles, the performance testing requirements for new energy battery packs are getting higher and higher. Therefore, the requirements for high-energy and high-speed upward ejection impact test benches are also getting higher and higher. Because the impact head hits the bottom of the battery pack, it will be bounced back by the battery pack. The impact head obtains the rebound energy and will continue to hit the impact piston rod. At this time, the impact piston rod is in an extended state, and there is compressed gas at the shaft end. Therefore, after the impact head hits the piston rod downward, the piston rod will be compressed to a certain extent and will push the impact head upward again to rebound and impact. The greater the initial energy, the greater the probability of the impact head rebounding and hitting the battery pack for the second time. Once the battery pack is hit for the second time, it is impossible to accurately test the degree of damage to the battery pack caused by the energy. Therefore, a device to prevent secondary rebound is needed to prevent the battery pack from being hit for the second time.

[0003] Currently, there are few types of high-energy, high-speed upward ejection impact test benches on the market, and none of them solves the problem of secondary rebound of the high-speed impact head.

[0004] In view of this, it is necessary to improve the existing impact device to solve the above problems.

[0005] Summary of the Invention

[0006] The object of the present invention is to provide an impact device to solve the problem that the existing impact test device is prone to secondary rebound.

[0007] To achieve the above-mentioned purpose, the present invention provides an impact device, which includes an impact member, a fixed seat spaced apart from the impact member, a support rod passing through the fixed seat and fixedly connected to the impact member, a first clamping member arranged on the impact member, and a second clamping member arranged on the fixed seat. The impact device has a first state in which the first clamping member is away from the second clamping member, and a second state in which the first clamping member is unidirectionally clamped relative to the second clamping member to avoid the impact member and the fixed seat from being away from each other.

[0008] As a further improvement of the present invention, the first clamping member includes a connecting portion fixed on the impact member, a hook portion connected to the connecting portion and close to the second clamping member, the second clamping member includes a claw for clamping with the hook portion, a pin shaft passing through the claw and inserted into the fixed seat, and the claw is rotatable relative to the fixed seat.

[0009] As a further improvement of the present invention, the second clamping member further includes a torsion spring arranged around the pin shaft.

[0010] As a further improvement of the present invention, the impact member includes an impact head and a connecting seat close to the fixing seat. The impact head is fixed on the connecting seat and extends toward a side away from the fixing seat.

[0011] As a further improvement of the present invention, the connecting portion is fixed on the connecting seat.

[0012] As a further improvement of the present invention, the support rod is fixed to the connecting seat.

[0013] As a further improvement of the present invention, the fixing seat includes a main body for the support rod to pass through, a guide plate fixedly connected to the main body and extending from the main body toward both sides, and the impact device also includes two linear bearings passing through the guide plates on both sides.

[0014] The present invention also provides an impact platform, which includes a cylinder, a limit plate spaced apart from the cylinder for placing an object to be tested, a guide shaft connecting the limit plate and the cylinder, and an impact device as described above, wherein the cylinder is connected to the support rod, and the impact member is arranged toward the limit plate. When the cylinder drives the impact device to move toward the limit plate, the impact device is in a first state. When the impact member hits the object to be tested on the limit plate and rebounds, the impact device is in a second state to prevent the impact member from generating a secondary impact.

[0015] The impact platform further includes a buffer pad arranged on a side of the limiting plate facing the cylinder.

[0016] The beneficial effects of the present invention are as follows: the impact device and the impact platform of the present invention are clamped by providing a first clamping member and a second clamping member, and locked using a physical structure, which has higher reliability and effectively avoids secondary impact on the object to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic diagram of the three-dimensional structure of the impact platform of the present invention;

[0018] FIG2 is a schematic diagram of the three-dimensional structure of the impact device of the present invention;

[0019] FIG3 is a schematic cross-sectional view of the impact platform of the present invention;

[0020] FIG4 is an enlarged structural diagram of area A in FIG3 . DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] As shown in Figures 1 to 4, the impact platform 100 of the present invention includes a cylinder 1, a limit plate 2 spaced apart from the cylinder 1 for placing the object to be tested, a guide shaft 3 connecting the limit plate 2 and the cylinder 1, an impact device 4, and a buffer pad 5 arranged on the side of the limit plate 2 facing the cylinder 1.

[0025] The impact device 4 includes an impact member 41, a fixing seat 42 spaced apart from the impact member 41, a support rod 43 passing through the fixing seat 42 and fixedly connected to the impact member 41, a first clamping member 44 arranged on the impact member 41, a second clamping member 45 arranged on the fixing seat 42, and a linear bearing 46.

[0026] In this embodiment, the air cylinder 1 is connected to the support rod 43 to drive the impact head 411 to move. The impact member 41 is positioned toward the limit plate 2. The air cylinder 1 drives the support rod 43 to move toward the limit plate 2, so that the impact member 41 can impact the object to be tested on the limit plate 2.

[0027] The striking device 4 has a first state in which the first clamping member 44 is spaced apart from the second clamping member 45 , and a second state in which the first clamping member 44 is unidirectionally clamped relative to the second clamping member 45 to prevent the striking member 41 from being spaced apart from the fixing seat 42 .

[0028] When the cylinder 1 drives the impact device 4 to move toward the limit plate 2, the impact device 4 is in the first state. When the impact member 41 impacts the object to be tested on the limit plate 2 and rebounds, the impact device 4 is in the second state to prevent the impact member 41 from generating a secondary impact.

[0029] The first holding member 44 includes a connecting portion 441 fixed to the striking member 41 and a hook portion 442 connected to the connecting portion 441 and close to the second holding member 45 .

[0030] The second clamping member 45 includes a claw 451 for clamping the hook portion 442, a pin 452 passing through the claw 451 and inserted into the fixing seat 42, and a torsion spring 453 disposed around the pin 452. The claw 451 is rotatable relative to the fixing seat 42.

[0031] When the impact device 4 is in the first state, the hook portion 442 of the first clamping member 44 and the claw 451 of the second clamping member 45 are disengaged from each other. When the impact device 4 is changed from the first state to the second state, the hook portion 442 squeezes the claw 451, drives the claw 451 to rotate relative to the pin shaft 452, and compresses the torsion spring 453. When the impact device 4 is in the second state, the torsion spring 453 drives the claw 451 to restore to its initial state, and the hook portion 442 and the claw 451 are clamped in opposite directions, limiting the first clamping member 44 and the second clamping member 45, and preventing the impact member 41 from generating a secondary impact.

[0032] The impact member 41 includes an impact head 411 and a connecting seat 412 close to the fixing seat 42 . The impact head 411 is fixed on the connecting seat 412 and extends toward a side away from the fixing seat 42 . The connecting portion 441 is fixed on the connecting seat 412 .

[0033] The support rod 43 is fixed to the connecting seat 412 .

[0034] The fixed seat 42 includes a main body 421 through which the support rod 43 passes, and guide plates 422 fixedly connected to the main body 421 and extending from the main body 421 to either side. Two linear bearings 46 are provided, each passing through the guide plates 422 on either side. The fixed seat 42 can slide relative to the support rod 43 to accommodate high-speed impact conditions. Bearings can also be installed between the impact member 41 and the guide shaft to provide guidance, and the guide plates 422 also provide a guiding function. This dual-guiding structure ensures better compatibility between the first retaining member 44 and the second retaining member 45.

[0035] The working process of the impact platform 100 is as follows:

[0036] In the initial state, the impact device 4 is in the first state, the cylinder 1 drives the support rod 43, and pushes the impact member 41 to move toward the limit plate 2. The impact head 411 falls back after the first impact and hits the support rod 43 again. Due to the action of inertia, the fixed seat 42 moves toward the limit plate 2 relative to the support rod 43. At this time, the second clamping member 45 also moves upward and passes through the position of the hook portion 442. When the impact head 411 is bounced up again by the support rod 43 of the cylinder 1, the hook portion 442 cooperates with the claw 451, so that the hook portion 442 is caught by the claw 451, thereby locking the impact head 411 to prevent it from rebounding for the second time.

[0037] The impact device 4 and the impact platform 100 of the present invention are provided with a first clamping member 44 and a second clamping member 45 for clamping, and use a physical structure for locking, which has higher reliability and effectively avoids secondary impact on the object to be tested.

[0038] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A striking device, characterized in that: The impact device includes an impact member, a fixing seat spaced apart from the impact member, a support rod passing through the fixing seat and fixedly connected to the impact member, a first clamping member arranged on the impact member, and a second clamping member arranged on the fixing seat. The impact device has a first state in which the first clamping member is spaced apart from the second clamping member, and a second state in which the first clamping member is unidirectionally clamped relative to the second clamping member to avoid the impact member from being spaced apart from the fixing seat.

2. The impact device according to claim 1, characterized in that: The first clamping member includes a connecting portion fixed on the impact member, a hook portion connected to the connecting portion and close to the second clamping member, the second clamping member includes a claw for clamping with the hook portion, a pin shaft passing through the claw and inserted into the fixing seat, and the claw is rotatably arranged relative to the fixing seat.

3. The impact device according to claim 2, characterized in that: The second clamping member further includes a torsion spring arranged around the pin shaft.

4. The impact device according to claim 2, characterized in that: The impact member comprises an impact head and a connecting seat close to the fixing seat. The impact head is fixed on the connecting seat and extends toward a side away from the fixing seat.

5. The impact device according to claim 4, characterized in that: The connecting portion is fixed on the connecting seat.

6. The impact device according to claim 4, characterized in that: The support rod is fixed to the connecting seat.

7. The impact device according to claim 1, characterized in that: The fixing seat includes a main body for the support rod to pass through, and a guide plate fixedly connected to the main body and extending from the main body toward both sides. The impact device also includes two linear bearings passing through the guide plates on both sides.

8. An impact platform, characterized in that: The impact platform includes a cylinder, a limit plate spaced apart from the cylinder for placing an object to be tested, a guide shaft connecting the limit plate and the cylinder, and an impact device as described in any one of claims 1 to 7, wherein the cylinder is connected to the support rod, and the impact member is arranged toward the limit plate. When the cylinder drives the impact device to move toward the limit plate, the impact device is in a first state, and when the impact member hits the object to be tested on the limit plate and rebounds, the impact device is in a second state to prevent the impact member from generating a secondary impact.

9. The impact platform according to claim 8, characterized in that: The impact platform also includes a buffer pad arranged on a side of the limiting plate facing the cylinder.

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