Clamping type plum coupling

Abstract

The utility model relates to the technical field of coupling devices, and discloses a clamping type plum coupling which comprises a plum-blossom-shaped elastic piece, half coupling bodies are arranged on the upper side and the lower side of the plum-blossom-shaped elastic piece, and convex claws are fixedly connected to the sides, close to the plum-blossom-shaped elastic piece, of the half coupling bodies. An outer shaft sleeve is fixedly connected to the side, away from the quincunx-shaped elastic piece, of the coupling half body, a through hole is formed in the upper surface of the quincunx-shaped elastic piece, a fixing rod is fixedly connected to the surface of the side, close to the quincunx-shaped elastic piece, of the coupling half body, and a rubber sleeve is fixedly connected to the outer side of the fixing rod. According to the three-dimensional flexible compensation coupling, through cooperation of the through holes, the fixing rods and the rubber sleeves, after the coupling is installed, the rubber sleeves on the two sides are subjected to mutual slight extrusion deformation, axial friction faces are newly increased, the torque capacity is improved, a three-dimensional flexible compensation network is formed, and then the torque transmission stability is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coupling device technical field especially, it relates to a clamping type plum blossom coupling. BACKGROUND

[0002] Clamping type plum blossom coupling is a kind of mechanical transmission components that realize the connection of two shafts by clamping screw fixing mode, it is composed of two half couplings with lugs and a plum blossom elastic element, the elastic element is embedded between two half couplings, torque is transmitted by extrusion, and the relative displacement of two shafts is compensated by elastic deformation, and it is widely used in occasions requiring high precision and backlash-free transmission, when there is radial, angular or axial deviation between two shafts, elastic element occurs elastic deformation, to compensate these deviations.

[0003] And the existing plum blossom coupling in actual use, only rely on plum blossom petal side friction force transmission, produce weak torque, there is to be improved, simultaneously when carrying out high-speed operation, there is the risk of slippage between metal claw disc and elastomer, to solve the above problems, a clamping type plum blossom coupling is proposed. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a clamping type plum blossom coupling, aims at improving the problem of weak torque and slippage risk of plum blossom coupling in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a clamping type plum blossom coupling, including plum blossom elastic piece, the upper and lower sides of plum blossom elastic piece are provided with half coupling body, the side of half coupling body close to plum blossom elastic piece is fixedly connected with lug, the side of half coupling body away from plum blossom elastic piece is fixedly connected with outer shaft sleeve, the upper surface of plum blossom elastic piece is provided with through hole, the surface of the side of half coupling body close to plum blossom elastic piece is fixedly connected with fixed rod, the outer side of fixed rod is fixedly connected with rubber sleeve.

[0006] As a further description of the above technical scheme:

[0007] The size of rubber sleeve and the size of through hole are mutually adapted.

[0008] As a further description of the above technical scheme:

[0009] The length of through hole is less than the sum of the lengths of two rubber sleeves.

[0010] As a further description of the above technical scheme:

[0011] The side surface of rubber sleeve close to half coupling body is fixedly connected with half coupling body.

[0012] As a further description of the above technical solutions:

[0013] The through hole is arranged at a plum blossom protruding position of the plum blossom elastic member.

[0014] As a further description of the above technical solutions:

[0015] The rubber soft pad is fixedly connected to one side surface of the semi-coupling body close to the plum blossom elastic member.

[0016] As a further description of the above technical solutions:

[0017] The plum blossom elastic member is provided with a round corner at an outer side corner.

[0018] As a further description of the above technical solutions:

[0019] The rubber sleeve is inserted into the through hole.

[0020] The utility model has the advantages of the following:

[0021] 1. The through hole, the fixed rod and the rubber sleeve are arranged in cooperation, so that the rubber sleeves on both sides are slightly extruded and deformed after the coupling is installed, an axial friction surface is added, the torque capacity is improved, a three-dimensional flexible compensation network is formed, the torque transmission stability is further improved, the compression and rebound force of the rubber sleeve can inhibit the radial micro displacement during high-speed operation, and slipping is avoided.

[0022] 2. The rubber soft pad is arranged to reduce the abrasion caused by friction between the plum blossom elastic member, the round corner is arranged to avoid sharp corners, and stress concentration is reduced, so that cracks of the plum blossom elastic member are avoided. DRAWINGS

[0023] Fig. 1 A split schematic view of the clamping type plum blossom coupling is provided in the utility model;

[0024] Fig. 2 A schematic view of the whole clamping type plum blossom coupling is provided in the utility model;

[0025] Fig. 3 A split schematic view of the semi-coupling body of the clamping type plum blossom coupling is provided in the utility model.

[0026] LEGEND:

[0027] 1. Plum blossom elastic member; 2. Semi-coupling body; 3. Lugs; 4. Outer shaft sleeve; 5. Through hole; 6. Fixed rod; 7. Rubber sleeve; 8. Rubber soft pad; 9. Round corner. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] With reference to Figs. 1-2 The utility model provides an embodiment: a clamping type plum blossom coupling, including plum blossom elastic piece 1, plum blossom elastic piece 1 can carry out elastic deformation, both sides of plum blossom elastic piece 1 are provided with half coupling body 2, half coupling body 2 is fixedly connected with lug 3 on the side close to plum blossom elastic piece 1, the size of lug 3 is mutually adapted with the size of plum blossom elastic piece 1, half coupling body 2 can be installed to the outside of plum blossom elastic piece 1 through lug 3, half coupling body 2 is fixedly connected with outer shaft sleeve 4 on the side away from plum blossom elastic piece 1, half coupling body 2 can be connected with shaft through outer shaft sleeve 4, plum blossom coupling passes through the extrusion transmission power between half coupling body 2 and plum blossom elastic piece 1, the deformation of plum blossom elastic piece 1 can absorb vibration, compensate radial, angular and axial deviation, the above structure is prior art means in the field, here is not superfluous repetition.

[0030] With reference to Figs. 1-3 The upper surface of plum blossom elastic piece 1 is provided with through hole 5, through hole 5 is set up in plum blossom petal convex position, through rubber sleeve 7 shares load, reduces elastic body root stress peak value, through hole 5 is set up in plum blossom elastic piece 1 plum blossom convex position, the surface of the side close to plum blossom elastic piece 1 of half coupling body 2 is fixedly connected with fixed rod 6, the outside of fixed rod 6 is fixedly connected with rubber sleeve 7, fixed rod 6 can enhance the internal strength of rubber sleeve 7, the size of rubber sleeve 7 and the size of through hole 5 are mutually adapted, the length of through hole 5 is less than the sum of the length of two rubber sleeves 7, the side surface of the side close to half coupling body 2 of rubber sleeve 7 is fixedly connected with half coupling body 2, rubber sleeve 7 is inserted with the inside of through hole 5, when half coupling body 2 is installed to the outside of plum blossom elastic piece 1, rubber sleeve 7 will be directly inserted into the inside of corresponding through hole 5, and when the half coupling body 2 on both sides is installed, the rubber sleeve 7 on both sides will be slightly extruded and deformed.

[0031] With reference to Figs. 1-3The rubber pad 8 is fixedly connected to the side surface of the half-coupling body 2 close to the side surface of the plum-shaped elastic member 1, and can replace the surface of the half-coupling body 2 to contact the upper and lower side surfaces of the plum-shaped elastic member 1, both of which are flexible materials, so that the actual contact area is large, the stress distribution is more uniform, the wear caused by friction is reduced, and the round corner 9 is arranged at the outer side corner of the plum-shaped elastic member 1, so that the sharp corner is avoided to reduce stress concentration and to avoid crack initiation of the plum-shaped elastic member 1.

[0032] Working principle: the rubber sleeve 7 and the through hole 5 are inserted to automatically guide the two half-coupling bodies 2 to be centered during assembly, reducing the manual adjustment time, and after the rubber sleeve 7 is inserted into the through hole 5, the elastic deformation forms a close contact, compared with the traditional friction transmission force only relying on the side surface of the plum-shaped petals, the axial friction surface is added, the torque capacity is improved, the compression and rebound force of the rubber sleeve 7 can inhibit the radial micro-displacement during high-speed operation, to avoid the slip between the half-coupling body 2 and the plum-shaped elastic member 1, the elastic deformation of the rubber sleeve 7 in the through hole 5 provides axial compensation, forms a three-dimensional flexible compensation network, and then enhances the stability of torque transmission, and can reduce the centering error, and the continuous contact and friction between the rubber sleeve 7 and the wall of the through hole 5 can convert high-frequency vibration into heat energy dissipation, and then vibration suppression, and the stress concentration is reduced by the round corner 9 designed by the designer.

[0033] Finally, it should be pointed out that: the above only preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A clamping type plum blossom coupling, comprising a plum blossom-shaped elastic element (1), characterized in that: The plum blossom-shaped elastic element (1) has a half-coupling body (2) on both the upper and lower sides. A protruding claw (3) is fixedly connected to the side of the half-coupling body (2) close to the plum blossom-shaped elastic element (1). An outer bushing (4) is fixedly connected to the side of the half-coupling body (2) away from the plum blossom-shaped elastic element (1). A through hole (5) is opened on the upper surface of the plum blossom-shaped elastic element (1). A fixing rod (6) is fixedly connected to the side surface of the half-coupling body (2) close to the plum blossom-shaped elastic element (1). A rubber sleeve (7) is fixedly connected to the outside of the fixing rod (6).

2. The clamping type plum blossom coupling according to claim 1, characterized in that: The size of the rubber sleeve (7) is adapted to the size of the through hole (5).

3. The clamping type plum blossom coupling according to claim 1, characterized in that: The length of the through hole (5) is less than the sum of the lengths of the two rubber sleeves (7).

4. A clamping type plum blossom coupling according to claim 1, characterized in that: The rubber sleeve (7) is fixedly connected to the half-coupling body (2) on one side surface near the half-coupling body (2).

5. A clamping type plum blossom coupling according to claim 1, characterized in that: The through hole (5) is opened at the plum blossom-shaped protrusion of the plum blossom-shaped elastic element (1).

6. A clamping type plum blossom coupling according to claim 1, characterized in that: A rubber pad (8) is fixedly connected to the surface of the half-coupling body (2) near the plum blossom-shaped elastic element (1).

7. A clamping type plum blossom coupling according to claim 1, characterized in that: The outer corner of the plum blossom-shaped elastic element (1) is provided with a rounded corner (9).

8. A clamping type plum blossom coupling according to claim 1, characterized in that: The rubber sleeve (7) is inserted into the through hole (5).

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