Battery tray friction stir welding structure based on mine environment

Abstract

The invention discloses a battery tray friction stir welding structure based on a mine environment, which comprises at least two supporting blocks arranged side by side, one side wall of each supporting block is provided with a telescopic rod connected with the other supporting block, and a plurality of battery tray bottom plates are uniformly distributed on the supporting blocks along the long sides of the supporting blocks; the lever air cylinder is arranged on one side wall of the supporting block, and a rocker arm for pressing and fixing a battery tray bottom plate is arranged on the lever air cylinder; the pushing block assembly is arranged on the supporting block so as to enable the plurality of adjacent battery tray bottom plates to be close to each other; a motor; according to the device, the motor, the push block assembly and the positioning assembly are arranged, so that a plurality of battery tray bottom plates can be tightly attached, the connection tightness and firmness during friction welding are improved, the device is simple in structure and convenient to operate, and the using effect of the device is improved.

Description

Technical Field

[0001] The present invention specifically relates to a battery tray friction stir welding structure based on a mining environment. Background Art

[0002] The application of new energy trucks in the mining field has become the core direction of the green transformation of the mining industry. Its large-scale and intelligent development is advancing rapidly. In order to ensure the firmness of the battery tray welding and good sealing effect, and to cope with the high dust environment in the mine, stir friction welding is often used. As a solid-phase welding technology, stir friction welding can effectively avoid traditional fusion welding problems such as pores, cracks, and inclusions compared to traditional welding in the manufacturing of new energy vehicle battery trays. The weld grain is small and uniform, and the joint strength is high.

[0003] When welding existing battery trays, multiple tray bottom plate profiles are usually placed on a fixture manually or by a robot, and then the adjacent tray bottom plates are welded using stir friction welding technology to fix the multiple bottom plate profiles to form a whole. However, when the bottom plate profiles are placed manually or by a robot, the adjacent bottom plate profiles cannot be closely attached to each other, and there are gaps, resulting in insufficient strength after welding. When the gap is large, it seriously affects the firmness of the welding. For this reason, we propose a battery tray stir friction welding structure based on a mining environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a battery tray friction stir welding structure based on a mining environment to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a battery tray friction stir welding structure based on a mining environment, comprising:

[0006] At least two supporting blocks arranged side by side, with one side wall of each supporting block having a telescopic rod connected to the other supporting block, and multiple battery tray bottom plates evenly distributed along the long sides of each supporting block;

[0007] A lever cylinder is provided on a side wall of the support block, and the lever cylinder has a rocker arm for pressing the bottom plate of the battery tray;

[0008] a push block assembly, disposed on the support block to bring the bottom plates of a plurality of adjacent battery trays closer together;

[0009] A motor is provided at one end of the support block to drive the push block assembly to move;

[0010] The positioning assembly is arranged between the lever cylinder and the support block to position one end of the battery tray bottom plate.

[0011] Preferably, the push block assembly includes a screw rod, a transmission chain, a slider and a push block. The screw rod is rotatably installed on the inner side of the support block, and the slider is connected to the screw rod through a threaded portion. The push block is fixed on the slider to contact the bottom plate of the battery tray, and the end of the screw rod has a transmission chain that cooperates with another screw rod.

[0012] Preferably, a pressure sensor is provided on one side wall of the push block.

[0013] Preferably, the outer surface of the screw rod contains a first external thread and a second external thread, and the first external thread and the second external thread have opposite rotation directions. The push block is provided at two locations along the axial direction of the screw rod, and the two push blocks respectively cooperate with the first external thread and the second external thread.

[0014] Preferably, the positioning assembly includes a positioning plate, a mounting plate and a reset spring. The mounting plate is fixed to a side wall of the support block by bolts, and a positioning plate is provided on the sliding sleeve of the mounting plate. The inner side of the positioning plate has a reset spring that contacts the mounting plate.

[0015] Preferably, the positioning plate is rectangular.

[0016] Preferably, a groove is provided on the support block, a ball is rotatably mounted inside the groove, and a support spring is provided on the lower surface of the ball to elastically support it.

[0017] Preferably, a plurality of the balls are evenly distributed along the long side of the support block.

[0018] Preferably, the number of the lever cylinders is twice the number of the battery tray base plates.

[0019] Preferably, a plurality of telescopic rods are provided, and the plurality of telescopic rods are parallel to each other.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention is provided with a motor, a push block assembly and a positioning assembly to avoid the traditional problem that when the battery tray base plate is placed on the clamp manually or by a robot, the two adjacent battery tray base plates are not tightly attached, resulting in large gaps and poor welding firmness during stir friction welding. The present device can make multiple battery tray base plates tightly attached to each other, thereby improving the tightness and firmness of the connection during friction welding. The present device has a simple structure and is easy to operate, which increases the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the telescopic rod structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the transmission chain structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the push block structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the exploded structure of the positioning assembly of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the support block of the present invention.

[0028] In the figure: 1. Support block; 2. Lever cylinder; 3. Battery tray bottom plate; 4. Motor; 5. Telescopic rod; 6. Push block assembly; 601. Screw rod; 602. Transmission chain; 603. Slider; 604. Push block; 605. Pressure sensor; 7. Positioning assembly; 701. Positioning plate; 702. Mounting plate; 703. Return spring; 101. Groove; 102. Ball; 103. Support spring. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-6 The present invention provides a technical solution: a battery tray friction stir welding structure based on a mining environment, comprising:

[0031] At least two supporting blocks 1 are arranged side by side, and a telescopic rod 5 is provided on one side wall of each supporting block 1 to connect to the other supporting block 1. The telescopic rod 5 facilitates adjustment of the distance between the two supporting blocks 1, thereby supporting battery tray bottom plates 3 of different lengths. Multiple battery tray bottom plates 3 are evenly distributed along the long sides of the supporting block 1.

[0032] The lever cylinder 2 is provided on a side wall of the support block 1 and has a rocker arm for pressing the battery tray bottom plate 3;

[0033] It is convenient to quickly press multiple battery tray bottom plates 3 onto the support block 1;

[0034] A push block assembly 6 is provided on the support block 1 to bring the multiple adjacent battery tray bottom plates 3 closer together;

[0035] It is convenient to bring adjacent battery tray bottom plates 3 closer to each other and reduce the gap, so as to improve the firmness during the subsequent stir friction welding.

[0036] The motor 4 is provided at one end of the support block 1 to drive the push block assembly 6 to move;

[0037] A positioning assembly 7 is provided between the lever cylinder 2 and the support block 1 to position one end of the battery tray bottom plate 3;

[0038] It is convenient to position one end of the battery tray bottom plate 3, thereby ensuring that the ends of multiple battery tray bottom plates 3 are aligned.

[0039] Preferably, the push block assembly 6 includes a screw rod 601, a transmission chain 602, a slider 603 and a push block 604. The screw rod 601 is rotatably installed on the inner side of the support block 1, and the slider 603 is connected to the screw rod 601 through a threaded portion. The push block 604 is fixed on the slider 603 to contact the battery tray base plate 3. The end of the screw rod 601 has a transmission chain 602 that cooperates with another screw rod 601, which is convenient for driving the screw rod 601 to rotate, thereby driving the push block 604 to move, and the position of the battery tray base plate 3 is adjusted through the push block 604 to make the adjacent battery tray base plates 3 more closely attached to facilitate subsequent stir friction welding.

[0040] Preferably, a pressure sensor 605 is provided on one side wall of the push block 604 to facilitate the comparison of the resistance pressure with a preset threshold when pushing multiple battery tray bottom plates 3 to fit tightly together, so as to determine whether they are in place.

[0041] Preferably, the outer surface of the screw rod 601 contains a first external thread and a second external thread, and the first external thread and the second external thread have opposite rotation directions. The push blocks 604 are arranged at two locations along the axial direction of the screw rod 601. The two push blocks 604 respectively cooperate with the first external thread and the second external thread, so as to better bring the two push blocks 604 at both ends of the screw rod 601 closer to each other.

[0042] Preferably, the positioning assembly 7 includes a positioning plate 701, a mounting plate 702 and a return spring 703. The mounting plate 702 is fixed to a side wall of the support block 1 by bolts, and the positioning plate 701 is slidably sleeved on the mounting plate 702. The inner side of the positioning plate 701 has a return spring 703 that contacts the mounting plate 702.

[0043] After aligning the ends of the battery tray bottom plate 3 , when the lever cylinder 2 subsequently presses the battery tray bottom plate 3 , the positioning plate 701 will drop to prevent the positioning plate 701 from blocking the rocker arm on the lever cylinder 2 .

[0044] Preferably, the positioning plate 701 is rectangular.

[0045] Preferably, a groove 101 is provided on the support block 1, and a ball 102 is rotatably installed inside the groove 101, and a support spring 103 is provided on the lower surface of the ball 102 to elastically support it, so as to provide rolling friction when multiple battery tray bottom plates 3 are pushed close together by the push block 604, thereby reducing the wear of the battery tray bottom plates 3 and the support block 1.

[0046] Preferably, a plurality of balls 102 are evenly distributed along the long side of the support block 1 .

[0047] Preferably, the number of lever cylinders 2 is twice the number of battery tray base plates 3 , so as to better press and fix the battery tray base plates 3 .

[0048] Preferably, a plurality of telescopic rods 5 are provided, and the plurality of telescopic rods 5 are parallel to each other.

[0049] The working principle and usage process of the present invention: When in use, the battery tray base plate 3 to be welded is placed on the support block 1, and one end of the battery tray base plate 3 is positioned by the positioning component 7. At this time, the motor 4 drives the screw rod 601 to rotate, and the screw rod 601 drives the two push blocks 604 to approach each other through the first external thread and the second external thread, thereby making multiple adjacent battery tray base plates 3 approach each other to narrow the gap between the two adjacent battery tray base plates 3. The air source drives the lever cylinder 2 to move, and the rocker arm on the lever cylinder 2 rotates toward the battery tray base plate 3. At this time, the positioning plate 701 is pressed down, and the return spring 703 undergoes elastic deformation and shortening. At least the rocker arm presses the battery tray base plate 3 to fix it to the support block 1, thereby facilitating the rotation of the stirring welding needle to stir and frictionally heat the two adjacent battery tray base plates 3 for welding. The friction welding pores and cracks are removed, and the weld density is excellent, meeting the dust and water vapor sealing requirements of the mine.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A battery tray friction stir welding structure based on a mining environment, characterized in that: include: At least two supporting blocks (1) are arranged side by side, and one side wall of each supporting block (1) has a telescopic rod (5) connected to the other supporting block (1), and a plurality of battery tray bottom plates (3) are evenly distributed on each supporting block (1) along its long side; A lever cylinder (2) is arranged on a side wall of the support block (1), and the lever cylinder (2) has a rocker arm for pressing the battery tray bottom plate (3); A push block assembly (6) is arranged on the support block (1) to bring a plurality of adjacent battery tray bottom plates (3) closer together; A motor (4) is provided at one end of the support block (1) to drive the push block assembly (6) to move; A positioning assembly (7) is arranged between the lever cylinder (2) and the support block (1) to position one end of the battery tray bottom plate (3).

2. The battery tray friction stir welding structure based on a mining environment according to claim 1 is characterized in that: The push block assembly (6) comprises a screw rod (601), a transmission chain (602), a slider (603) and a push block (604); the screw rod (601) is rotatably mounted on the inner side of the support block (1); the screw rod (601) is connected to the slider (603) via a threaded portion; the push block (604) is fixed to the slider (603) to contact the battery tray bottom plate (3); and the end of the screw rod (601) has a transmission chain (602) that cooperates with another screw rod (601).

3. The battery tray friction stir welding structure based on a mining environment according to claim 2, characterized in that: A pressure sensor (605) is provided on one side wall of the push block (604).

4. The battery tray friction stir welding structure based on a mining environment according to claim 2, characterized in that: The outer surface of the screw rod (601) includes a first external thread and a second external thread, and the first external thread and the second external thread have opposite rotation directions. The push block (604) is provided at two locations along the axial direction of the screw rod (601), and the two push blocks (604) respectively cooperate with the first external thread and the second external thread.

5. The battery tray friction stir welding structure based on a mining environment according to claim 1, characterized in that: The positioning assembly (7) includes a positioning plate (701), a mounting plate (702) and a return spring (703), wherein the mounting plate (702) is fixed to a side wall of the support block (1) by means of bolts, and a positioning plate (701) is provided on a sliding sleeve of the mounting plate (702), and a return spring (703) is provided on the inner side of the positioning plate (701) to contact the mounting plate (702).

6. The battery tray friction stir welding structure based on a mining environment according to claim 5, characterized in that: The positioning plate (701) is rectangular.

7. The battery tray friction stir welding structure based on a mining environment according to claim 1, characterized in that: A groove (101) is provided on the support block (1), a ball (102) is rotatably mounted inside the groove (101), and a support spring (103) for elastically supporting the ball (102) is provided on the lower surface of the ball (102).

8. The battery tray friction stir welding structure based on a mining environment according to claim 7, characterized in that: A plurality of the balls (102) are evenly distributed along the long side of the support block (1).

9. The battery tray friction stir welding structure based on a mining environment according to claim 1, characterized in that: The number of the lever cylinders (2) is twice the number of the battery tray bottom plates (3).

10. The battery tray friction stir welding structure based on a mining environment according to claim 1, characterized in that: A plurality of telescopic rods (5) are provided, and the plurality of telescopic rods (5) are parallel to each other.

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