CN211371080U

CN211371080U - Small-size high-strength flexible coupling

Info

Publication number: CN211371080U
Application number: CN201922413787.5U
Authority: CN
Inventors: 王兴光; 黄连平; 陈月生
Original assignee: JIANGSU SIDA POWER MECHANICAL GROUP CO Ltd
Current assignee: JIANGSU SIDA POWER MECHANICAL GROUP CO Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-28
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a small-size high-strength flexible coupling, which comprises an outer ring, an elastic body, an inner ring and a spline shaft, wherein the outer ring and the inner ring are concentrically arranged, and the elastic body is arranged between the outer ring and the inner ring; the length of the elastomer is greater than the thickness of the elastomer. The utility model discloses a spline connection need not to adjust the centering, and major axis high elasticity rubber structure has the big and good characteristics of shock attenuation effect of transmission moment of torsion, and perfect satisfy under the internal-combustion engine bench test realizes different work condition, the shaft coupling damping, fall the requirement of making an uproar, long-life, big torque.

Description

Small-size high-strength flexible coupling

Technical Field

The utility model relates to a flexible shaft coupling technical scheme of small-size high strength for utility test room for be connected with the dynamometer when diesel engine bench test, belong to internal-combustion engine technical scheme field.

Background

The types of the couplings can be divided into two main types according to the existence of elastic elements, and the flexible couplings without the elastic elements can not buffer and damp vibration because of the nonelastic elements and are not generally adopted in the bench test of the internal combustion engine. At present, the elastic cylindrical pin coupling and the high-elasticity rubber coupling (end face connection) are mainly adopted, the elastic cylindrical pin coupling and the high-elasticity rubber coupling are adopted in a large number, have elasticity and the capacity of compensating axial displacement, and are easy to wear when the axial eccentricity is large. The latter is a high-elasticity rubber coupling, the power is transmitted through specially designed whole-circle rubber, the high elasticity is achieved, but the requirements on the excircle runout, the end face non-parallelism and the end face distance tolerance among connected parts are high, meanwhile, due to the fact that bolts are adopted for fastening, the problem of bolt loosening needs to be checked regularly, and the potential safety hazard of bolt breakage exists. Besides the problem of the decentralization of the engine and the dynamometer, some high-elasticity couplings have relatively large output size for ensuring large torque.

Disclosure of Invention

The utility model aims to overcome the not enough that exists among the prior art, provide a flexible shaft coupling of small-size high strength, this shaft coupling adopts splined connection to need not to adjust the centering, and major axis high elasticity rubber structure has the big and good characteristics of shock attenuation effect of transmission moment of torsion, and perfect satisfaction is under the different work condition of internal-combustion engine bench test realization, the shaft coupling damping, fall the requirement of making an uproar, long-life, big torque.

According to the utility model provides a technical scheme: a small-size high-strength flexible coupling comprises an outer ring, an elastic body, an inner ring and a spline shaft, wherein the outer ring and the inner ring are arranged concentrically, and the elastic body is arranged between the outer ring and the inner ring; the length of the elastomer is greater than the thickness of the elastomer.

Furthermore, the inner ring adopts a spline sleeve structure matched with the spline shaft.

Further, the diameter of the spline shaft is 20-80mm, and the length of the elastic body is 40-120 mm.

Furthermore, the elastic body is made of rubber.

Further, the thickness of the elastomer is 8-40 mm.

Further, the outer ring 1 and the inner ring 3 are made of steel.

Compared with the prior art, the utility model, have following advantage:

1. small size: and a spline connection transmission mode is adopted, so that the designed overall structure is small in size.

2. The elasticity is big: high-elasticity rubber is adopted, and meanwhile, the buffering capacity of the coupling is remarkably enhanced due to the long-distance spline type transmission structure.

3. The transmission torque is large: and a spline long shaft is adopted, so that the torque transmission capacity is increased.

4. Safe and reliable: the elastomer rubber is internally arranged, and is not connected with the bolts, so that the safety is greatly improved. Meanwhile, a novel vulcanization process of the metal and the rubber of the coupler is adopted, so that the service life and the reliability of the coupler are greatly improved.

5. The allowed jitter is large: the shaft couplings with other structures have higher requirements on the excircle runout and the end face parallelism of the part due to the adoption of bolt connection and fastening. The structure can compensate the misalignment and allow large jitter.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

Description of reference numerals: 1-outer ring, 2-elastic body, 3-inner ring and 4-spline shaft.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, a small-size high-strength flexible coupling adopts a new structure, is miniaturized and meets the requirement of transmitting torque or motion under each working condition of an internal combustion engine test, and comprises an outer ring 1, an elastic body 2, an inner ring 3 and a spline shaft 4, wherein the outer ring 1 and the inner ring 3 are arranged concentrically, and the elastic body 2 is arranged between the outer ring 1 and the inner ring 3; the length of the elastic body 2 is greater than the thickness of the elastic body 2.

The inner ring 3 adopts a spline sleeve structure matched with the spline shaft 4, centering is not needed, connection is simple and convenient, and a large amount of installation and adjustment time is saved. The long-distance spline sleeve transmission mode design is adopted, and the functional requirement of the coupler for transmitting large torque is met. The diameter of the spline shaft 4 is 20-80mm, and the length of the elastic body 2 is 40-120 mm. The elastic body 2 is made of rubber. The thickness of the elastic body 2 is 8-40 mm.

The outer ring 1 and the inner ring 3 are made of steel, so that the bench test is relatively safer during operation.

The novel adhesive is selected, the metal surface is pretreated, then the rubber is firmly bonded with the metal surface by a vulcanization method, the vulcanization bonding strength is greater than 4MPa, the bonding reliability is greatly improved, and the service life is greatly prolonged. And a long-distance bearing structure is added, so that large torque can be transmitted.

The flexible coupling is formed by high-elasticity elements with simple shapes, has high elasticity and good flexibility and good damping performance, and can adjust the torsional vibration characteristic of a shafting of a transmission device. For the durability test, the high elasticity is adopted, the good damping effect can be achieved, and the stability of the load of a crankshaft and a dynamometer of an internal combustion engine is very favorable.

The rubber elastic bodies are bonded by the concentric inner and outer ring metals, and the torque is output outwards by the inner ring metal in a long-distance spline sleeve transmission mode, so that the designed overall structure is small and exquisite.

The spline shaft is used for transmitting torque, and the structure is simple and convenient to install. The dynamometer is basically fixed during the bench test of the internal combustion engine, and the internal combustion engine is frequently replaced. The structure does not need to be centered when the internal combustion engine is connected with the dynamometer, greatly shortens the installation time of the bench and improves the utilization rate of the test bench.

When the internal combustion engine is connected with the dynamometer, the rubber elastic body adopts a built-in design, and meanwhile, a bolt-free connection mode is adopted, so that the safety of the coupler in the test process is improved.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A small-size high-strength flexible coupling is characterized by comprising an outer ring (1), an elastic body (2), an inner ring (3) and a spline shaft (4), wherein the outer ring (1) and the inner ring (3) are concentrically arranged, and the elastic body (2) is arranged between the outer ring (1) and the inner ring (3); the length of the elastic body (2) is larger than the thickness of the elastic body (2).

2. The small-sized high-strength flexible coupling according to claim 1, wherein the inner race (3) adopts a spline housing structure that engages with the spline shaft (4).

3. The small-sized high-strength flexible coupling according to claim 1, wherein the spline shaft (4) has a diameter of 20 to 80mm, and the elastomer (2) has a length of 40 to 120 mm.

4. A small-sized high-strength flexible coupling according to claim 1, characterized in that said elastomer (2) is made of rubber.

5. The small-sized high-strength flexible coupling according to claim 1, wherein the thickness of the elastic body (2) is 8-40 mm.

6. A small-sized high-strength flexible coupling according to claim 1, characterized in that the material of the outer ring (1) and the inner ring (3) is steel.