Torsion-resistant tool for tightening stack on conveying line
By designing a tightening and anti-torsion tooling with a slide and a slot, the problem of the nut being difficult to remove during the tightening of the battery stack is solved, the nut is anti-rotation and anti-torsion and the battery stack can be stably removed, which improves the tightening efficiency and structural stability.
Patent Information
- Application Number
- CN202422602417.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the prior art, when the battery stack is tightened on the conveyor line, the interaction force between the nut and the anti-torsion sleeve makes it difficult to easily remove the battery stack from the anti-torsion tooling, affecting the tightening efficiency and structural stability.
A tightening and anti-torsion tooling was designed, which included a reference base plate, a slide plate, a support guide block, a placement plate, a screw and an anti-torsion sleeve. The anti-rotation and anti-torsion functions of the screw and nut were realized through the cooperation of the slide plate and the slot. When the battery stack was offline, the slide plate was pushed by external force to change the design of the slot and eliminate the reaction force.
The nut is prevented from rotating and twisting during the tightening process, ensuring the structural stability and sealing of the fuel cell stack. At the same time, the fuel cell stack can be easily removed from the tooling when it is offline, with a simple structure and low assembly requirements.
Smart Images
Figure CN223301628U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical engineering, in particular to a torsion-resistant tooling for tightening a stack on a conveyor line. Background Art
[0002] With the growing global demand for clean energy, hydrogen fuel cell engines have garnered widespread attention as an efficient and environmentally friendly power source. The fuel cell stack is a core component of a hydrogen fuel cell engine, and its performance directly determines the engine's output power, efficiency, and reliability. During the fuel cell assembly process, the most critical step is tightening the stack. By tightening the screws and nuts to the target torque, the stack's top plate, current collector, separators, and individual cells are securely locked together, ensuring structural stability and sealing.
[0003] In the current existing work of tightening battery stacks on conveyor lines, since the battery stack locking nut is a hexagonal anti-dismantling nut and the entire press-fitting and tightening process is automatically performed on the conveyor line, there is a need for an anti-torsion tool for tightening battery stacks on conveyor lines. In addition, after the screw and nut are tightened with the help of the anti-torsion sleeve, there will be an interaction force between the nut and the anti-torsion sleeve, which makes it difficult to remove the battery stack from the anti-torsion tool at the offline work station after the overall tightening of the battery stack is completed. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a torsion-resistant tooling for tightening the battery stack on a conveyor line.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tool for tightening and anti-torsion of battery stacks on conveyor lines, comprising a reference base plate, a slide plate is provided on the surface of the reference base plate, a support guide block is provided on the surface of the slide plate, a placement plate is provided on the surface of the support guide block, a battery stack body is provided on the surface of the placement plate, an assembly cover is provided on the top surface of the battery stack body, a screw rod is passed through the surface of the assembly cover and the placement plate, a nut is provided at the end of the screw rod, a slot is provided on the surface of the slide plate, an anti-torsion sleeve is provided on the surface of the slot, the bottom end of the screw rod passes through the placement plate and is plugged into the anti-torsion sleeve, the shape of the slot is adapted to the anti-torsion sleeve, and the inner surface of the nut is engaged with the outer surface of the anti-torsion sleeve.
[0006] Preferably, the surface of the reference base plate is provided with stacking backers, and the stacking backers are arranged in two groups in an axisymmetric manner.
[0007] Preferably, the slide plate is arranged between two stacking backers, and the shape and position of the slide plate are adapted to the stacking backers.
[0008] Preferably, the support guide blocks are arranged in two groups in an axisymmetric manner, and the shape and position of the stack body are adapted to the stacking backer.
[0009] Preferably, three screws are arranged in a linear array, and the screws are arranged axially symmetrically on the surface of the assembly cover.
[0010] Preferably, the top end of the screw is threadedly connected to the surface of the assembly cover, and the stack body is arranged between the placement plate and the assembly cover through the screw.
[0011] Preferably, a slot is provided on the surface of the reference base plate, and the bottom of the anti-torsion sleeve is arranged in the slot.
[0012] Beneficial effects
[0013] The utility model adopts a slide plate, an anti-torsion sleeve, a slot, a screw and a nut to realize efficient anti-rotation and anti-torsion functions during the tightening process of the screw and nut. When the screw and the nut are tightened, one end of the anti-torsion sleeve clamps the hexagonal nut and the other end is clamped in the slot of the slide plate. The area with a smaller diameter of the slot clamps the anti-torsion sleeve to prevent rotation, thereby ensuring that the nut is anti-rotation and anti-torsion when tightening. At the same time, the anti-torsion sleeve fully considers the space for the intermediate screw to pass through the nut during the tightening process while meeting the anti-torsion requirements. Secondly, when the battery stack body is offline, the slide plate can be pushed by an external force. Due to the special shape design of the slot, the anti-torsion sleeve is moved to the area with a larger diameter of the slot so that it no longer clamps the anti-torsion sleeve, thereby eliminating the reaction force generated during tightening, thereby facilitating the easy removal of the battery stack body from the tooling, and playing an effective anti-torsion role for tightening the anti-disassembly nut at a special position of the battery stack body. The overall design enables each component to play its respective role without interfering with each other in a limited and narrow space. The structure is simple and the machining and assembly requirements are low. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is an axonometric view of the present utility model;
[0015] Figure 2 It is a top view of the utility model;
[0016] Figure 3 For this utility model Figure 2 A magnified view of middle A;
[0017] Figure 4 This is a front cross-sectional view of the screw of the present invention;
[0018] Figure 5 For this utility model Figure 4 Enlarged view of middle B;
[0019] Figure 6 This is a structural diagram of the anti-torsion sleeve of the utility model.
[0020] Legend:
[0021] 1. Reference base plate; 2. Slide plate; 3. Support guide block; 4. Anti-torsion sleeve; 5. Stacking support; 6. Slot; 7. Placement plate; 8. Assembly cover; 9. Screw; 10. Stack body; 11. Nut. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.
[0023] The specific embodiments of the present utility model are described below with reference to the accompanying drawings. Specific embodiment one:
[0025] Reference Figure 1-5 A tool for tightening and twisting the battery stack on the conveyor line includes a reference base plate 1, a stacking backer 5 is provided on the surface of the reference base plate 1, and the stacking backer 5 is symmetrically arranged in two groups. The stacking backer 5 is used to position the battery stack body 10, limit the five degrees of freedom of the battery stack body 10 in the front, back, left, right and rotation directions, and effectively prevent it from rotating when the screw 9 and the nut 11 are tightened. A slide plate 2 is provided on the surface of the reference base plate 1, and the slide plate 2 is arranged between the two stacking backers 5. The shape and position of the slide plate 2 are adapted to the stacking backers 5. A slot 6 is provided on the surface of the slot 6. The surface is provided with an anti-torsion sleeve 4, and the shape of the slot 6 is adapted to the anti-torsion sleeve 4. Through the arrangement of the slide plate 2 and the slot 6, when the screw 9 and the nut 11 are tightened, the area with a smaller diameter of the slot 6 clamps the anti-torsion sleeve 4 to prevent rotation. Secondly, when the battery stack body 10 is offline, the slide plate 2 can be pushed by an external force to move the anti-torsion sleeve 4 to the area with a larger diameter of the slot 6, so that it no longer clamps the anti-torsion sleeve 4, thereby eliminating the reaction force generated during tightening, thereby facilitating the battery stack body 10 to be easily removed from the tooling, realizing the locking and unlocking of the anti-torsion sleeve 4, and ensuring that the slide plate 2 will not interfere with other components during the tightening process.
[0026] The surface of the slide 2 is provided with a support guide block 3, and the support guide block 3 is axially symmetrically arranged in two groups. The support guide block 3 serves as the support surface when the battery stack body 10 is assembled. The surface of the support guide block 3 is provided with a placement plate 7, and the surface of the placement plate 7 is provided with the battery stack body 10. The shape and position of the battery stack body 10 are adapted to the stacking backer 5. The top surface of the battery stack body 10 is provided with an assembly cover 8, and the assembly cover 8, the placement plate 7 and the battery stack body 10 are fastened together by screws 9 and nuts 11 to ensure the sealing and structural integrity of the battery stack body 10. The surface of the assembly cover 8 and the placement plate 7 is penetrated by screws 9, and the screws 9 are provided in a linear array with three The screw 9 is axially symmetrically arranged on the surface of the assembly cover 8. One end of the screw 9 is threadedly connected to the surface of the assembly cover 8, and the other end of the screw 9 passes through the placement plate 7 and is plugged into the anti-torsion sleeve 4. The assembly cover 8 and the battery stack body 10 are threadedly connected to ensure the firmness of the connection. The anti-torsion sleeve 4 not only meets the anti-torsion requirement but also fully considers the space for the intermediate screw 9 to pass through the nut 11 during the tightening process. A nut 11 is provided at the end of the screw 9, and the screw 9 is threadedly connected to the nut 11. The inner surface of the nut 11 is clamped with the outer surface of the anti-torsion sleeve 4, thereby realizing the anti-rotation and anti-torsion functions of the screw 9 and the nut 11 during the tightening process.
[0027] After the single cells are stacked, the assembly cover 8 is placed on the top surface of the battery stack body 10, ensuring that the assembly cover 8 is aligned with the interface of the battery stack body 10, and the screws 9 are passed through the threaded holes on the assembly cover 8 respectively, and passed through the placement plate 7, and finally connected with the anti-torsion sleeve 4. When the screws 9 and the nuts 11 are tightened, one end of the anti-torsion sleeve 4 is stuck in the hexagonal nut 11, and the other end is stuck in the slot 6 of the slide 2, thereby ensuring that the nut 11 is anti-rotation and anti-torsion when tightening the nut 11. Then, when the battery stack body 10 is offline, the slide 2 can be pushed by external force. Due to the special shape design of the slot 6, the anti-torsion sleeve 4 is moved to the area with a larger diameter of the slot 6, so that it no longer sticks to the anti-torsion sleeve 4, thereby eliminating the reaction force generated during tightening, thereby facilitating the battery stack body 10 to be easily removed from the tooling. Specific embodiment two:
[0029] refer to Figure 5-6, based on the basic structure in the specific embodiment 1, the upper part of the anti-torsion sleeve 4 adopts an outer hexagonal surface design, which matches the inner hexagonal surface of the hexagonal nut 11 to form a firm clamping structure. During the tightening process, this clamping method effectively prevents the nut 11 from rotating, ensuring the stability and reliability of the tightening action. The two sides of the middle part of the anti-torsion sleeve 4 are clamped with the two sides of the card slot 6 to form a strong anti-torsion force, which not only enhances the stability of the anti-torsion sleeve 4 during the tightening process, but also prevents it from loosening or shifting under high torque. The bottom of the anti-torsion sleeve 4 is inserted into the slot of the reference base plate 1, which not only provides additional support and stability for the anti-torsion sleeve 4, but also further enhances its anti-torsion ability. The cooperation between the hole of the reference base plate 1 and the bottom of the anti-torsion sleeve 4 ensures that the anti-torsion sleeve 4 is fixed in the vertical direction, preventing it from deflecting or tilting during the tightening process.
[0030] In summary:
[0031] 1. The slide plate 2, anti-torsion sleeve 4, slot 6, screw 9 and nut 11 are used to achieve that when the screw 9 and nut 11 are tightened, one end of the anti-torsion sleeve 4 is clamped in the hexagonal nut 11, and the other end is clamped in the slot 6 of the slide plate 2. The area with a smaller diameter of the slot 6 clamps the anti-torsion sleeve 4 to prevent rotation, thereby ensuring that the nut 11 is anti-rotation and anti-torsion when tightening the nut 11. At the same time, the anti-torsion sleeve 4 not only meets the anti-torsion requirement but also fully considers the space for the middle screw 9 to pass through the nut 11 during the tightening process. Secondly, in the battery stack body 10 When the line is offline, the slide plate 2 can be pushed by an external force. Due to the special shape design of the slot 6, the anti-torsion sleeve 4 is moved to the area with a larger diameter of the slot 6, so that it no longer gets stuck in the anti-torsion sleeve 4, thereby eliminating the reaction force generated during tightening, thereby facilitating the easy removal of the battery stack body 10 from the tooling. The anti-disassembly nut 11 at the special position of the battery stack body 10 plays an effective anti-torsion role. The overall design enables each component to play its own role without interfering with each other in a limited and narrow space. The structure is simple, and the machining and assembly requirements are low.
[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A tool for tightening and twisting a stack on a conveyor line, comprising a reference base plate (1), characterized in that: The surface of the reference base plate (1) is provided with a slide plate (2), the surface of the slide plate (2) is provided with a support guide block (3), the surface of the support guide block (3) is provided with a placement plate (7), the surface of the placement plate (7) is provided with a battery stack body (10), the top surface of the battery stack body (10) is provided with an assembly cover (8), the surfaces of the assembly cover (8) and the placement plate (7) are penetrated by a screw rod (9), the end of the screw rod (9) is provided with a nut (11), the surface of the slide plate (2) is provided with a slot (6), the surface of the slot (6) is provided with an anti-torsion sleeve (4), the bottom end of the screw rod (9) penetrates the placement plate (7) and is plugged into the anti-torsion sleeve (4), the shape of the slot (6) is adapted to the anti-torsion sleeve (4), and the inner surface of the nut (11) is engaged with the outer surface of the anti-torsion sleeve (4).
2. The anti-torsion tool for tightening the battery stack on the conveyor line according to claim 1, characterized in that: The surface of the reference base plate (1) is provided with stacking supports (5), and the stacking supports (5) are arranged in two groups in an axisymmetric manner.
3. The anti-torsion tool for tightening the battery stack on the conveyor line according to claim 2, characterized in that: The slide plate (2) is arranged between two stacking supports (5), and the shape and position of the slide plate (2) are adapted to the stacking supports (5).
4. The anti-torsion tool for tightening the battery stack on the conveyor line according to claim 2, characterized in that: The supporting guide blocks (3) are arranged in two groups in an axisymmetric manner, and the shape and position of the stack body (10) are adapted to the stacking backer (5).
5. The anti-torsion tool for tightening the battery stack on the conveyor line according to claim 1, characterized in that: The screw rods (9) are arranged in three linear arrays, and the screw rods (9) are arranged on the surface of the assembly cover (8) in an axisymmetric manner.
6. The anti-torsion tool for tightening the battery stack on the conveyor line according to claim 1, characterized in that: The top end of the screw rod (9) is threadedly connected to the surface of the assembly cover (8), and the battery stack body (10) is arranged between the placement plate (7) and the assembly cover (8) through the screw rod (9).
7. The anti-torsion tool for tightening the battery stack on the conveyor line according to claim 1, characterized in that: A slot is provided on the surface of the reference base plate (1), and the bottom of the anti-torsion sleeve (4) is arranged in the slot.