Zigzag spring coupling with anti-seismic effect

Abstract

The invention discloses a zigzag spring coupling with an anti-seismic effect. The coupling comprises a coupling half I, a coupling half II and a zigzag spring for connecting the coupling half I and the coupling half II, axial tooth grooves which are uniformly distributed along the circumference are formed in the surfaces of the half coupling I and the half coupling II, so that first transmission teeth of the half coupling I and second transmission teeth of the half coupling II are formed between the axial tooth grooves; the zigzag springs are bent in a reciprocating manner and are inserted into axial tooth grooves of the first transmission teeth and the second transmission teeth in a penetrating manner, so that flexible connection between the half-coupling I and the half-coupling II is formed; nylon cushion blocks are partially / completely embedded in the positions, abutting against the end faces of the first transmission teeth and the second transmission teeth, of the inner sides of the bent parts of the zigzag springs. The nylon cushion block has the advantages that in the operation process of the coupler, the nylon cushion block can play a role in buffering and damping, damage of impact load to the zigzag spring is effectively reduced, and therefore the stability of the zigzag spring is guaranteed, the operation stability of the coupler and equipment is improved, and the service life of the coupler and the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of snake spring coupling, in particular to a kind of snake spring coupling with anti-shock effect. BACKGROUND

[0002] Under existing use conditions, snake spring coupling is relied on serpentine spring piece to transmit torque, so that conventional snake spring coupling is mainly used in the occasion where vibration is not very serious, some special occasions need snake spring coupling to have anti-shock effect, conventional snake spring coupling cannot be selected, otherwise snake spring can be damaged due to the intensification of vibration, which can cause damage to equipment and other security risks. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a kind of snake spring coupling with anti-shock effect, which can effectively resist shock in strong vibration working environment.

[0004] In order to solve the above technical problems, the snake spring coupling with anti-shock effect of the present application comprises a half coupling one and a half coupling two and a snake spring for connecting the half coupling one and the half coupling two;The surface of the half coupling one and the half coupling two is provided with axial tooth groove which is uniformly distributed along the circumference, so that the first transmission tooth of the half coupling one and the second transmission tooth of the half coupling two are formed between the axial tooth grooves;The snake spring is inserted into the axial tooth grooves of the first transmission tooth and the second transmission tooth by reciprocating bending, forming flexible connection of the half coupling one and the half coupling two;The inner side of the bending part of the snake spring is partially / fully embedded with nylon pad block at the position of abutting with the end face of the first transmission tooth and the second transmission tooth.

[0005] The half coupling one and the half coupling two are provided with a cover outside, and the end of the cover is sealed and connected with the half coupling one and the half coupling two by a sealing ring to form a closed cavity.

[0006] The cover is a two half-ring closing structure, and the two half-rings are fixed by bolts.

[0007] The cover is provided with an oil plug for adding lubricating oil into the cover.

[0008] One end of the nylon pad block is an end face adapted to the transmission tooth, and the other end is a cylindrical surface adapted to the snake spring.

[0009] Advantages of the present application: (1) The nylon pad block is spaced apart and assembled in the bending part of the snake spring and the transmission tooth, and during the operation of the coupling, the nylon pad block can play a buffering and shock-absorbing role, effectively reducing the damage of impact load to the snake spring, thereby ensuring the stability of the snake spring, improving the running stability and service life of the coupling and the equipment; (2) By setting a cover outside the half-coupling and forming a closed cavity, external impurities can be avoided from entering, while the internal lubricating oil is not easy to leak, thereby improving the lubricating environment of the snake spring, reducing wear and tear, and improving the working reliability; (3) The combination structure of the snake spring and the nylon pad block not only has good shock resistance and impact resistance, but also can maintain high flexibility compensation ability when transmitting torque, thereby allowing a certain installation error to exist between the two half-couplings, improving the convenience and application range of assembly. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a sectional view of the snake spring coupling with shock resistance of the present application; Figure 2 is a structural schematic view of the snake spring coupling with shock resistance of the present application; Figure 3 is a structural schematic view of the snake spring structure in the snake spring coupling with shock resistance of the present application; Figure 4 is a perspective view of the nylon pad block in the snake spring coupling with shock resistance of the present application. DETAILED DESCRIPTION

[0011] The snake spring coupling with shock resistance of the present application will be further described in detail below in combination with the drawings and specific embodiments. EMBODIMENT

[0012] The anti-vibration snake spring coupling comprises a half coupling one 1, a half coupling two 2 and a snake spring 4 for connecting the half coupling one 1 and the half coupling two 2; the half coupling one 1 and the half coupling two 2 are both provided with axial tooth grooves 8 which are uniformly distributed along the circumference, so that the first transmission teeth 9 of the half coupling one 1 and the second transmission teeth 10 of the half coupling two 2 are formed between the axial tooth grooves 8; the snake spring 4 is inserted into the axial tooth grooves 8 of the first transmission teeth 9 and the second transmission teeth 10 in a reciprocating bending mode, so as to form a flexible connection between the half coupling one 1 and the half coupling two 2; the inner side of the bending part of the snake spring 4 is partially / fully embedded with nylon pads 12 at the position where the bending part abuts against the end face of the first transmission teeth 9 and the second transmission teeth 10; the distribution of the nylon pads 12 can adopt the mode of two nylon pads 12 being arranged at the end face of the transmission teeth at every two bending parts, the nylon pads 12 being divided between the bending part of the snake spring 4 and the end face of the transmission teeth, one end of the nylon pad 12 being an end face adapted to the transmission teeth, and the other end being a cylindrical surface adapted to the snake spring 4; the snake spring coupling is externally provided with a cover 3, the end of the cover 3 is sealingly connected with the half coupling 11 and the half coupling 22 through a sealing ring 5 to form a closed cavity; the cover 3 is a two half ring closing structure, the two half rings are connected and fixed through bolts 7, the end of the cover 3 is oppositely attached to the outer side of the half coupling 11 and the half coupling 22, and is provided with a screw hole at the corresponding position, the bolt 7, the washer are sequentially arranged in the screw hole, and are locked through a nut; a number of inner hexagonal screws 13 for locking the cover 3 are arranged on the cover 3; an oil plug 11 for adding lubricating oil into the cover 3 is arranged on the cover 3.

Claims

1. A serpentine spring coupling with anti-vibration function, comprising a first half-coupling (1) and a second half-coupling (2) and a serpentine spring (4) for connecting the first half-coupling (1) and the second half-coupling (2); both the first half-coupling (1) and the second half-coupling (2) are provided with axial toothed grooves (8) evenly distributed along the circumference, thereby forming a first transmission tooth (9) of the first half-coupling (1) and a second transmission tooth (10) of the second half-coupling (2) between the axial toothed grooves (8); the serpentine spring (4) reciprocates and bends and inserts into the axial toothed grooves (8) of the first transmission tooth (9) and the second transmission tooth (10), forming a flexible connection between the first half-coupling (1) and the second half-coupling (2); characterized in that: The inner side of the bent portion of the serpentine spring (4) where it abuts against the end faces of the first transmission tooth (9) and the second transmission tooth (10) is partially or completely embedded with nylon pads (12).

2. The anti-vibration spring coupling according to claim 1, characterized in that: The outer surfaces of the first half-coupling (1) and the second half-coupling (2) are provided with covers (3), and the ends of the covers (3) are sealed to the first half-coupling (1) and the second half-coupling (2) by sealing rings (5) to form a closed cavity.

3. The anti-vibration spring coupling according to claim 2, characterized in that: The cover (3) is a structure of two semi-rings joined together, and the two semi-rings are connected and fixed by bolts (7).

4. The anti-vibration spring coupling according to claim 2 or 3, characterized in that: The cover (3) is provided with an oil plug (11) for adding lubricating oil into the cover (3).

5. The anti-vibration spring coupling according to claim 1, characterized in that: One end of the nylon pad (12) is an end face adapted to the transmission gear, and the other end is a cylindrical surface adapted to the serpentine spring (4).

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