CN211978269U - Circulating ball impact testing device - Google Patents

Abstract

The utility model relates to a power battery field provides a circulation ball hits testing arrangement, including assaulting subassembly and driving motor, assault the subassembly and include two at least guide cylinders, impact ball, bracket and drive mechanism, drive mechanism includes push-and-pull subassembly and crank connecting rod, and the push-and-pull subassembly has the second link that is used for articulated two at least first links that correspond the bracket and is used for the one end of articulated crank connecting rod, and crank connecting rod's the other end articulates in driving motor. The driving motor is started, firstly, the crank connecting rod of the transmission mechanism is driven, secondly, the crank connecting rod drives the push-pull assembly, so that the push-pull assembly pushes the two brackets to move up and down along the vertical direction in the channel of the corresponding guide cylinder, the two brackets support the corresponding impact ball to impact towards an impact object, and the kinetic energy of the impact ball is in direct proportion to the rotating speed of the driving motor. Therefore, the impact kinetic energy of the impact ball is regulated and controlled by adjusting the rotating speed of the driving motor.

Description

Circulating ball impact testing device

Technical Field

The utility model relates to a power battery technical field especially provides a circulation ball hits testing arrangement.

Background

With the increasing popularization of new energy automobiles, however, short circuit and fire accidents sometimes happen to the new energy automobiles due to mechanical damage. Therefore, manufacturers of large new energy vehicles gradually perfect various test surfaces, wherein the bottom impact test of the battery pack is one of the test surfaces. At present, the impact test of the bottom of the battery pack is mainly divided into three types: firstly, a sphere with small kinetic energy is circularly impacted for many times; secondly, the ball with large kinetic energy is subjected to single destructive impact; thirdly, the sphere is in quasi-static type extrusion impact.

In the ball impact testing device in the current market, the kinetic energy of an impact ball cannot be effectively calibrated and controlled, so that the reliability of the ball impact test is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circulation ball hits testing arrangement, the kinetic energy of the impact ball that aims at solving current ball hits testing arrangement lacks the problem of effective demarcation and control.

In order to achieve the above object, the utility model adopts the following technical scheme: a circulating ball impact testing device comprises an impact assembly and a driving motor used for providing power for the impact assembly, wherein the impact assembly comprises at least two guide cylinders with channels, impact balls arranged in the channels corresponding to the guide cylinders, brackets which are connected in the channels corresponding to the guide cylinders in a sliding mode and used for supporting the corresponding impact balls to move up and down along the vertical direction, and a transmission mechanism used for being connected to the output ends of the brackets and the driving motor, the transmission mechanism comprises a push-pull assembly and a crank connecting rod used for driving the push-pull assembly to move up and down along the vertical direction, the push-pull assembly is provided with at least two first connecting ends used for hinging the corresponding brackets and a second connecting end used for hinging one end of the crank connecting rod, and the other end of the crank connecting rod is hinged to the driving motor.

The utility model has the advantages that: the utility model provides a circulation ball hits testing arrangement, its working process as follows: the driving motor is started, firstly, the crank connecting rod of the transmission mechanism is driven, secondly, the crank connecting rod drives the push-pull assembly, so that the push-pull assembly pushes the corresponding bracket to move up and down along the vertical direction in the channel of the corresponding guide cylinder, the bracket supports the corresponding impact ball and impacts towards the impact object, and the kinetic energy of the impact ball is in direct proportion to the rotating speed of the driving motor. Therefore, the impact kinetic energy of the impact ball is regulated and controlled by adjusting the rotating speed of the driving motor.

In one embodiment, the push-pull assembly comprises a bracket and at least two push-pull rods hinged on the bracket, wherein one end of each push-pull rod, which is far away from the bracket, is a first connecting end, and one end of the bracket, which is far away from the push-pull rods, is a second connecting end.

By adopting the technical scheme, the support comprises the horizontal part and the vertical part vertical to the middle part of the horizontal part, and each push-pull rod is hinged to the horizontal part of the support, so that when the crank connecting rod pushes and pulls the second connecting end of the support, the first connecting end of each push-pull rod pushes and pulls the corresponding bracket to move up and down in the vertical direction simultaneously.

In one embodiment, the number of the guide cylinders is two, the two guide cylinders are arranged side by side, the support is a T-shaped support, the number of the push-pull rods is two, and the two push-pull rods are symmetrically hinged to the T-shaped support.

By adopting the technical scheme, when the driving motor drives the crank connecting rod to rotate, the T-shaped support drives the two push-pull rods to move upwards or downwards simultaneously, so that the impact balls in the two guide cylinders impact an object to be tested simultaneously.

In one embodiment, the number of the guide cylinders is four, each guide cylinder is arranged in a ring shape, the support is a cross-shaped support, the number of the push-pull rods is four, and each push-pull rod is circumferentially hinged to the cross-shaped support.

By adopting the technical scheme, when the driving motor drives the crank connecting rod to rotate, the cross-shaped support drives the four push-pull rods to move upwards or downwards simultaneously, so that the impact balls in the four guide cylinders impact an object to be tested simultaneously.

In one embodiment, the push-pull assembly comprises an L-shaped frame used for limiting the support to move in the vertical direction, and a limiting groove used for accommodating the support is formed in the L-shaped frame.

Through adopting above-mentioned technical scheme, utilize the spacing support of L type frame degree of using oneself in vertical direction.

In one embodiment, the crank connecting rod comprises a first connecting rod and a second connecting rod which are connected in an articulated mode, the length of the second connecting rod is larger than that of the first connecting rod, one end, far away from the second connecting rod, of the first connecting rod is hinged to the output end of the driving motor, and one end, far away from the first connecting rod, of the second connecting rod is hinged to the second connecting end of the support.

Through adopting above-mentioned technical scheme, first connecting rod rotates around the axis in driving motor's output to make the tip that first connecting rod was kept away from to the second connecting rod reciprocate in vertical direction.

In one embodiment, the crank link comprises a cam connected to the output end of the driving motor and a straight rod having one end hinged to the cam, and the other end of the straight rod is hinged to the second connecting end of the bracket.

Through adopting above-mentioned technical scheme, on the same principle, the cam rotates around the axis in driving motor's output, and similarly, the tip that the straight-bar kept away from the cam reciprocates in vertical direction.

In one embodiment, the guide cylinder comprises a cylinder body with a channel and supporting legs arranged outside the cylinder body.

Through adopting above-mentioned technical scheme, in order to guarantee that the bracket reciprocates steadily in the vertical direction, the barrel needs fix and hold up it through the supporting legs to guarantee the required activity space of bracket.

In one embodiment, the bracket includes a support portion slidably coupled within the channel of the barrel and a connecting portion having one end fixedly coupled to the support portion and another end hingedly coupled to the first coupling end of the push-pull rod.

By adopting the technical scheme, the push-pull rod sequentially pushes the connecting part and the supporting part to do linear reciprocating motion in the vertical direction.

In one embodiment, the circulating ball impact testing device further comprises a fixing frame for fixing the battery pack, the fixing frame comprises a frame for placing the battery pack and fixing feet arranged at each top corner of the frame, and the bottom end face of the frame is higher than the top end face of the guide cylinder.

Through adopting above-mentioned technical scheme, utilize the mount to hold up the battery package to make the impact ball strike the bottom of battery package, accomplish battery package bottom impact test. Wherein the frame is supported by the fixing legs, the battery pack is fixed on the frame, and the bottom of the battery pack is exposed to the impact ball.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a circular ball impact testing device according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of an impact assembly of a circulating ball impact testing apparatus according to an embodiment of the present invention;

fig. 3 is a top view of a push-pull assembly of an impact assembly of a cyclic ball impact testing apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a guide cylinder of an impact assembly of a circulating ball impact testing apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an L-shaped frame of an impact assembly of a circulating ball impact testing apparatus according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a crank link of a transmission mechanism of a cyclic ball impact testing apparatus according to a second embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

the impact mechanism comprises an impact assembly 10, a driving motor 20, a guide cylinder 11, an impact ball 12, a bracket 13, a transmission mechanism 14, a push-pull assembly 141, a crank connecting rod 142, a first connecting end 14a, a second connecting end 14b, a support 1411, a push-pull rod 1412, an L-shaped frame 1413, a limiting groove 14c, a first connecting rod 1421a, a second connecting rod 1422a, a cam 1421b, a straight rod 1422b, a cylinder 111, a supporting foot 112, a notch 11a, a supporting part 131, a connecting part 132, a fixed frame 30, a frame 31 and a fixed foot 32.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 and 2, a device for testing a circulating ball impact according to an embodiment of the present invention includes an impact assembly 10 and a driving motor 20 for providing power to the impact assembly 10, the impact assembly 10 includes at least two guide cylinders 11 having a channel, an impact ball 12 disposed in the channel of the corresponding guide cylinder 11, the driving mechanism 14 is connected to the brackets 13 slidably connected in the corresponding channel of the guide cylinder 11 and used for lifting the corresponding impact ball 12 to move up and down along the vertical direction, and the driving mechanism 14 is connected to the output ends of each bracket 13 and the driving motor 20, the driving mechanism 14 includes a push-pull assembly 141 and a crank connecting rod 142 used for driving the push-pull assembly 141 to move up and down along the vertical direction, the push-pull assembly 141 has at least two first connecting ends 14a used for hinging the corresponding brackets 13 and a second connecting end 14b used for hinging one end of the crank connecting rod 142, and the other end of the crank connecting rod 142 is hinged to the driving motor 20.

The utility model has the advantages that: the utility model provides a circulation ball hits testing arrangement, its working process as follows: the driving motor 20 is started, firstly, the crank connecting rod 142 of the transmission mechanism 14 is driven, secondly, the crank connecting rod 142 drives the push-pull assembly 141, so that the push-pull assembly 141 pushes each bracket 13 to move up and down in the vertical direction in the channel of the corresponding guide cylinder 11, each bracket 13 supports the corresponding impact ball 12 and impacts towards the impact object, and the kinetic energy of the impact ball 12 is in direct proportion to the rotating speed of the driving motor 20. According to the collection of the test data, that is, the current rotating speed of the driving motor 20 and the speed of the impact ball 12 corresponding to the mass are collected, it can be known that a transmission relation coefficient f exists between the rotating speed n of the driving motor 20 and the speed V of the impact ball 12, that is, V ═ f × n, and thus a direct ratio relation is satisfied. Thus, the impact kinetic energy of the impact ball 12 is regulated by adjusting the rotation speed of the drive motor 20.

Referring to fig. 1 and 2, in one embodiment, the push-pull assembly 141 includes a bracket 1411 and at least two push-pull rods 1412 hinged to the bracket 1411, wherein an end of each push-pull rod 1412 remote from the bracket 1411 is a first connection end 14a, and an end of the bracket 1411 remote from the push-pull rod 1412 is a second connection end 14 b. It is understood that the stand 1411 includes a horizontal portion to which each of the push-pull rods 1412 is hinged, and a vertical portion perpendicular to a middle portion of the horizontal portion, such that when the crank link 142 pushes and pulls the second connection end 14b of the stand 1411, the first connection end 14a of each of the push-pull rods 1412 pushes and pulls the corresponding bracket 13 to move up and down in the vertical direction at the same time.

Specifically, referring to fig. 2, in one embodiment, the number of the guide cylinders 11 is two, the two guide cylinders 11 are arranged side by side, the support 1411 is a T-shaped support, the number of the push-pull rods 1412 is two, and the two push-pull rods 1412 are symmetrically hinged to the T-shaped support. It can be understood that the horizontal portion of the T-shaped bracket is in a straight shape, the two push-pull rods 1412 are symmetrically hinged to the horizontal portion of the T-shaped bracket, the two push-pull rods 1412 correspond to the positions of the two guide cylinders 11, and when the driving motor 20 drives the crank connecting rod 142 to rotate, the T-shaped bracket drives the two push-pull rods 1412 to simultaneously move upwards or downwards, so that the impact balls 12 in the two guide cylinders 11 simultaneously impact the object to be tested.

Alternatively, referring to fig. 3, in another embodiment, the number of the guide cylinders 11 is four, each guide cylinder 11 is annularly disposed, the support 1411 is a cross-shaped support, the number of the push-pull rods 1412 is four, and each push-pull rod 1412 is circumferentially hinged to the cross-shaped support. It can be understood that the horizontal portion of the cross-shaped bracket is cross-shaped, and the four push-pull rods 1412 are sequentially hinged to the horizontal portion of the cross-shaped bracket in a surrounding manner, and when the driving motor 20 drives the crank connecting rod 142 to rotate, the cross-shaped bracket drives the four push-pull rods 1412 to simultaneously move up or down, so that the impact balls 13 in the four guide cylinders 11 simultaneously impact the object to be tested. Of course, the shape of the support 1411 can be changed to accommodate a corresponding number of push-pull rods 1412.

Referring to fig. 2 and 5, in an embodiment, the push-pull assembly 141 includes an L-shaped frame 1413 for limiting the movement of the bracket 1411 in the vertical direction, and the L-shaped frame 1413 is provided with a limiting groove 14c for receiving the bracket 1411. It is understood that the L-shaped frame 1413 is fixed on the mounting table at one end and has a limiting groove 14c at the other end, and the support 1411 moves in the vertical direction in the limiting groove 14c, i.e. the support 1411 only has the freedom of movement in the vertical direction.

Referring to fig. 1 and 2, in an embodiment, the crank link 142 includes a first link 1421a and a second link 1422a that are hinged to each other, a length of the second link 1422a is greater than a length of the first link 1421a, an end of the first link 1421a away from the second link 1422a is hinged to the output end of the driving motor 20, and an end of the second link 1422a away from the first link 1421a is hinged to the second connection end 14b of the bracket 1411. It can be understood that the first link 1421a rotates about the central axis of the output end of the driving motor 20, so that the end of the second link 1422a remote from the first link 1421a moves up and down in the vertical direction.

Referring to fig. 2 and 4, in one embodiment, the guiding cylinder 11 includes a cylinder 111 having a channel and supporting legs 112 disposed outside the cylinder 111. It will be appreciated that, in order to ensure that the bracket 13 moves up and down stably in the vertical direction, the cylinder 111 is fixed and supported by the supporting legs 112 to ensure a desired movement space of the bracket 13.

With continued reference to fig. 2 and 4, the sidewall of the cylinder 111 is provided with a notch 11a for the push-pull rod 1412 to pass through. In order to reduce the length of the support 1411, the push-pull rod 1412 is angled with respect to the bracket 13 such that when the push-pull rod 1412 moves toward the cylinder 111, the push-pull rod 1412 abuts against the sidewall of the cylinder 111 to limit the vertical upward movement of the push-pull rod 1412. Therefore, the notches 11a are formed in the side wall of the cylinder 111 so that the push-pull rod 1412 is inserted into the corresponding notch 11a when moving upward, and a longer movement stroke is obtained, i.e., a longer movement stroke of the bracket 13 in the passage of the cylinder 111 is obtained.

Referring to fig. 2, in one embodiment, the bracket 13 includes a supporting portion 131 slidably connected in the channel of the cylinder 111 and a connecting portion 132 having one end fixedly connected to the supporting portion 131 and the other end hingedly connected to the first connecting end 14a of the push-pull rod 1412. Here, the connecting portion 132 is hinged to the push-pull rod 1412 by a pin. It is understood that the push-pull rod 1412 in turn pushes the connecting portion 132 and the supporting portion 131 to reciprocate linearly in the vertical direction.

Referring to fig. 1 and 2, in the present embodiment, the device for testing a circulating ball impact further includes a fixing frame 30 for fixing a battery pack. As can be appreciated, the battery pack is held up by the holder 30 so that the impact ball 12 impacts the bottom of the battery pack, thereby completing the bottom impact test of the battery pack. Specifically, with continued reference to fig. 2, the fixing frame 30 includes a frame 31 for placing the battery pack and fixing legs 32 provided at respective top corners of the frame 31, and a bottom end surface of the frame 31 is higher than a top end surface of the guide cylinder 11. The frame 31 is lifted by the fixing legs 32, the battery pack is fixed to the frame 31, and the bottom of the battery pack is exposed to the impact ball 12.

Example two

Referring to fig. 6, the difference from the above embodiment is that the crank connecting rod 142 includes a cam 1421b connected to the output end of the driving motor 20 and a straight bar 1422b having one end hinged to the cam 1421b, and the other end of the straight bar 1422b is hinged to the second connecting end 14b of the bracket 1411. Here, one end of the straight bar 1422b close to the cam 1421b directly abuts against the cam 1421b, or a ring is provided at the end, and the ring is directly sleeved on the cam 1421 b. In this way, the cam 1421b rotates around the central axis of the output end of the driving motor 20, and the vertical movement of the end of the straight bar 1422b away from the cam 1421b in the vertical direction can also be achieved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A circulating ball hitting testing device is characterized in that: the impact assembly comprises at least two guide cylinders with channels, impact balls arranged in the channels corresponding to the guide cylinders, brackets which are connected in the channels of the corresponding guide cylinders in a sliding mode and used for supporting the corresponding impact balls to move up and down along the vertical direction, and a transmission mechanism used for being connected to each bracket and the output end of the driving motor, wherein the transmission mechanism comprises a push-pull assembly and a crank connecting rod used for driving the push-pull assembly to move up and down along the vertical direction, the push-pull assembly is provided with at least two first connecting ends used for hinging the corresponding brackets and a second connecting end used for hinging one end of the crank connecting rod, and the other end of the crank connecting rod is hinged to the driving motor.

2. The cyclic ball impact testing device according to claim 1, wherein: the push-pull assembly comprises a support and at least two push-pull rods hinged to the support, one end, far away from the support, of each push-pull rod is the first connecting end, and one end, far away from the push-pull rods, of the support is the second connecting end.

3. The cyclic ball impact testing device according to claim 2, wherein: the number of the guide cylinders is two, the two guide cylinders are arranged side by side, the support is a T-shaped support, the number of the push-pull rods is two, and the two push-pull rods are symmetrically hinged to the T-shaped support.

4. The cyclic ball impact testing device according to claim 2, wherein: the number of the guide cylinders is four, the guide cylinders are arranged in a ring shape, the support is a cross-shaped support, the number of the push-pull rods is four, and the push-pull rods are hinged to the cross-shaped support in a surrounding mode.

5. The cyclic ball impact testing device according to claim 2, wherein: the push-pull assembly comprises an L-shaped frame used for limiting the support to move in the vertical direction, and a limiting groove used for containing the support is formed in the L-shaped frame.

6. The cyclic ball impact testing device according to claim 2, wherein: the crank connecting rod comprises a first connecting rod and a second connecting rod which are connected in a hinged mode, the length of the second connecting rod is larger than that of the first connecting rod, one end, far away from the second connecting rod, of the first connecting rod is hinged to the output end of the driving motor, and one end, far away from the first connecting rod, of the second connecting rod is hinged to the second connecting end of the support.

7. The cyclic ball impact testing device according to claim 2, wherein: the crank connecting rod comprises a cam connected to the output end of the driving motor and a straight rod, one end of the straight rod is hinged to the cam, and the other end of the straight rod is hinged to the second connecting end of the support.

8. The cyclic ball impact testing device according to claim 2, wherein: the guide cylinder comprises a cylinder body with a channel and supporting legs arranged on the outer side of the cylinder body.

9. The cyclic ball impact testing device according to claim 8, wherein: the bracket comprises a supporting part which is connected in the channel of the cylinder body in a sliding way and a connecting part, one end of the connecting part is fixedly connected with the supporting part, and the other end of the connecting part is hinged with the first connecting end of the push-pull rod.

10. The cyclic ball impact test device according to any one of claims 1 to 9, wherein: the circulating ball hitting testing device further comprises a fixing frame for fixing the battery pack, the fixing frame comprises a frame for placing the battery pack and fixing feet arranged at each top corner of the frame, and the bottom end face of the frame is higher than the top end face of the guide cylinder.

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