CN202023856U - Elastic damping coupling - Google Patents

Abstract

The utility model discloses an elastic damping coupling, which comprises a spline shaft, a side plate, a flange, a sealing ring seat, a cover board and an oil guide pipe. Both ends of the oil guide pipe are respectively connected with an oil inlet hole of the sealing ring seat and an oil inlet hole of the cover board. In the utility model, the oil guide pipe is connected between the oil inlet hole of the sealing ring seat and the oil inlet hole of the cover board, so that lubricating oil which enters from the oil inlet hole on the cover board directly enters the oil inlet hole of the sealing ring seat from the oil guide pipe without entering a cavity between the sealing ring seat and the cover board, and thus, the pressure of return oil exists in the cavity. Due to the adoption of the elastic damping coupling, the problem that the return oil cannot be formed for the pressure oil supply of the coupling is effectively solved, the using performance and the service life of the coupling are improved, the stability, reliability and safety of operation of a power system are strengthened, and the torsional vibration characteristic and the technical indexes of a diesel engine power system are not influenced by the improvement.

Description

Elastic damping coupling

technical field

The utility model relates to the technical field of couplings, in particular to an elastic damping coupling.

Background technique

With the continuous development of engine design, the problem of torsional vibration of engine power plant has attracted more and more attention. In many cases it is necessary to suppress torsional vibrations or to shift dangerous resonances outside the engine operating speed range. In the diesel engine power system, it is necessary to match the elastic damping coupling to solve the torsional vibration of the shaft system. For example, it is suitable for the elastic damping coupling that connects a diesel engine at one end and a gearbox at the other end. The elastic damping coupling uses the elasticity of the reed to adjust the frequency and avoid vibration, and reduces the vibration peak through the damping flow of lubricating oil in the coupling, and finally plays a role in solving the torsional vibration.

Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a schematic structural diagram of an existing elastic damping coupling, and FIG. 2 is a cross-sectional view along line C-C in FIG. 1 .

The flange 13 and the side plate 12 clamp the uniformly distributed reed group 18 divided by the support block through bolts, and the spline shaft 11 with a flange at one end and a central hole is inserted from one side of the side plate 12, The inner end of each reed set 18 fits into the key groove of the spline shaft 11 . The cover plate 15 is fixed on the flange 13, and the sealing ring seat 14, which one end extends into the central hole of the spline shaft 11, is fixed on the spline shaft 11 by screws, and a groove for accommodating the sealing ring is provided on it, so that it is compatible with the spline shaft 11. Flange 13 is sealed by sealing ring to prevent oil leakage. The outer member flange 13 of the elastic coupling is connected to the input flange 17 of the gearbox, and the large-diameter end (flange end) of the spline shaft 11 is connected to the output flange 16 of the diesel engine. The spline groove at the small diameter end of the spline shaft 11 of the internal component of the coupling transmits torque to the flange 13 of the external component through the reed set 18 to transmit power to the gearbox.

Elastic damping coupling oil inlet: enter the cavity formed between the sealing ring seat 14 and the cover plate 15 through the oil inlet hole on the cover plate 15, and then enter the spline shaft through the oil inlet hole on the sealing ring seat 14 In the center hole of 11, finally enter in the reed group 18 by the oil outlet hole of spline shaft 11.

Elastic damping coupling oil return: the lubricating oil in the reed group 18 enters the cavity formed between the sealing ring seat 14 and the cover plate 15 through the oil outlet hole on the sealing ring seat 14, and then passes through the cover plate 15. The oil return hole returns oil.

According to the analysis of the oil inlet and oil return of the current elastic damping coupling, the oil inlet and oil return of the coupling pass through the cavity formed between the sealing ring seat 14 and the cover plate 15, which will cause the cavity The oil inlet pressure and oil return pressure inside cancel each other out, and it is impossible to form a separate oil inlet circuit and oil return circuit. In this case, the direct impact is that an axial force is generated between the spline shaft 11 of the inner member of the coupling and the flange 13 of the outer member, thereby generating axial thrust on the diesel engine or gearbox and affecting the entire system. When the situation is serious, it will also lead to the increased wear and tear of the reed set 18, fracture or damage to the gearbox of the diesel engine, which will affect the safe operation of the power system.

How to avoid axial force from being unable to form a separate oil inlet circuit and oil return circuit when the coupling is supplied with oil under pressure is an urgent problem to be solved by those skilled in the art.

Utility model content

In view of this, the utility model provides an elastic damping coupling to prevent axial force from being unable to form a separate oil inlet circuit and oil return circuit when the coupling is supplying oil under pressure.

In order to achieve the above object, the utility model provides the following technical solutions:

An elastic damping coupling, including a spline shaft, a side plate, a flange, a sealing ring seat and a cover plate, and also includes an oil guiding pipe, the two ends of the oil guiding pipe are respectively connected with the oil inlet hole and the cover of the sealing ring seat The oil inlet hole of the plate is connected.

Preferably, in the above-mentioned elastic damping coupling, both ends of the oil guiding pipe are respectively sealed with the sealing ring seat and the cover plate through sealing rings.

Preferably, in the above elastic damping coupling, the sealing ring is an O-ring.

Preferably, in the above-mentioned elastic damping coupling, the seal ring seat has the first boss extending toward the cover plate, the oil inlet hole on the seal ring seat passes through the first boss, the One end of the oil guide pipe extends into the oil inlet hole on the first boss.

Preferably, in the above-mentioned elastic damping coupling, the cover plate has a second boss extending toward the sealing ring seat, the oil inlet hole on the cover plate runs through the second boss, and the guide One end of the oil pipe extends into the oil inlet hole on the second boss.

It can be seen from the above technical scheme that the elastic damping coupling provided by the utility model connects the oil guide pipe between the oil inlet hole of the sealing ring seat and the oil inlet hole of the cover plate, so that the oil inlet hole on the cover plate enters The lubricating oil directly enters the oil inlet hole of the seal ring seat from the oil guide pipe, and does not enter the cavity between the seal ring seat and the cover plate, so there is oil return pressure in the above cavity. The utility model effectively solves the problem that the pressure oil supply to the coupling cannot form oil return, improves the service performance and life of the coupling itself, and enhances the running stability, reliability and safety of the power system, and the above improvements None of them affect the torsional vibration characteristics and technical indicators of the diesel engine power system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is the structural representation of existing elastic damping coupling;

Fig. 2 is a sectional view along the C-C section of Fig. 1;

Fig. 3 is a structural schematic diagram of the elastic damping coupling provided by the embodiment of the present invention;

Fig. 4 is a cross-sectional view along section C-C of Fig. 3 .

Detailed ways

The utility model discloses an elastic damping coupling, which prevents the coupling from being unable to form a separate oil inlet circuit and an oil return circuit when oil is supplied under pressure, thereby generating axial force.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 3 and Fig. 4, Fig. 3 is a schematic structural diagram of the elastic damping coupling provided by the embodiment of the present invention, and Fig. 4 is a cross-sectional view along the C-C section of Fig. 3 .

The flange 23 and the side plate 22 clamp the uniformly distributed reed group 28 divided by the support block through bolts, and the spline shaft 21 with a flange at one end and a central hole is inserted from one side of the side plate 22, The inner end of each reed set 28 is inserted into the key groove of the spline shaft 21 . Cover plate 25 is fixed on the flange 23, and the seal ring seat 24 that one end stretches into the central hole of spline shaft 21 is fixed on the spline shaft 21 by screws, and is provided with the groove that accommodates seal ring, so that and Flange 23 is sealed by sealing ring to prevent oil leakage. The outer member flange 23 of the elastic coupling is connected to the input flange 27 of the gearbox, and the large-diameter end (flange end) of the spline shaft 21 is connected to the output flange 26 of the diesel engine. The spline groove at the small diameter end of the spline shaft 21 of the inner member of the coupling transmits torque to the flange 23 of the outer member through the reed set 28 to transmit power to the gearbox.

The key point of the utility model is to also include the oil guide pipe 29, and the two ends of the oil guide pipe 29 are respectively connected with the oil inlet hole of the sealing ring seat 24 and the oil inlet hole of the cover plate 25.

Elastic damping coupling oil inlet: enter the oil guide pipe 29 through the oil inlet hole on the cover plate 25, then enter the center hole of the spline shaft 21 through the oil inlet hole on the sealing ring seat 24, and finally enter the oil guide pipe 21 from the spline shaft 21 The oil outlet hole enters in the reed group 28.

Elastic damping coupling oil return: the lubricating oil in the reed group 28 enters the cavity formed between the sealing ring seat 24 and the cover plate 25 through the oil outlet hole on the sealing ring seat 24, and then passes through the cover plate 25. The oil return hole returns oil.

The elastic damping coupling provided by the utility model connects the oil guide pipe 29 between the oil inlet hole of the sealing ring seat 24 and the oil inlet hole of the cover plate 25, so that the lubricating oil entering from the oil inlet hole on the cover plate 25 can directly The oil guide pipe 29 enters the oil inlet hole of the sealing ring seat 24 instead of entering the cavity between the sealing ring seat 24 and the cover plate 25, so there is oil return pressure inside the cavity. The utility model effectively solves the problem that the pressure oil supply to the coupling cannot form oil return, improves the service performance and life of the coupling itself, and enhances the running stability, reliability and safety of the power system, and the above improvements None of them affect the torsional vibration characteristics and technical indicators of the diesel engine power system.

In order to ensure the sealing between the oil guide pipe 29 and the seal ring seat 24 and the cover plate 25, the two ends of the oil guide pipe 29 are respectively sealed with the seal ring seat 24 and the cover plate 25 by a seal ring, and the seal ring is preferably an O-shaped seal ring. By arranging the sealing ring, oil leakage can be prevented at the contact parts between the oil guiding pipe 29 and the sealing ring seat 24 , and between the oil guiding pipe 29 and the cover plate 25 .

The seal ring seat 24 has a first boss extending toward the cover plate 25, the oil inlet hole on the seal ring seat 24 runs through the first boss, and one end of the oil guide pipe 29 extends into the oil inlet hole on the first boss . The cover plate 25 seal ring seat 24 has a second boss extending toward the seal ring seat 24, the oil inlet hole on the cover plate 25 runs through the second boss, and one end of the oil guide pipe 29 extends into the inlet on the second boss. inside the oil hole. By arranging the first boss and the second boss, the distance between the sealing ring seat 24 and the cover plate 25 can be shortened, and the length of the oil guide pipe 29 can be reduced accordingly, thereby reducing the machining accuracy of the oil guide pipe 29, and the oil guide pipe 29 The sealing ring seat 24 at both ends and the cover plate 25 have relative rotation, so shortening the length of the oil guide pipe 29 helps to improve the strength and rigidity of the oil guide pipe 29 .

The utility model effectively solves the problem that the coupling cannot form a separate oil inlet circuit and oil return circuit when the oil is supplied under pressure, and generates axial force, which causes the problem of damage to the diesel engine or the gearbox, and improves the The service performance and life of the coupling itself enhance the running stability, reliability and safety of the power system.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. elastic damping coupler, comprise splined shaft (21), side plate (22), flange (23), packing holder (24) and cover plate (25), it is characterized in that, also comprise oil guide pipe (29), the two ends of this oil guide pipe (29) link to each other with the oil inlet hole of described packing holder (24) and the oil inlet hole of cover plate (25) respectively.

2. elastic damping coupler according to claim 1 is characterized in that, the two ends of described oil guide pipe (29) seal by seal ring with described packing holder (24) and described cover plate (25) respectively.

3. elastic damping coupler according to claim 2 is characterized in that, described seal ring is an O-ring seals.

4. according to each described elastic damping coupler of claim 1-3, it is characterized in that, described packing holder (24) has described first boss that extends to cover plate (25) direction, oil inlet hole on the described packing holder (24) runs through this first boss, and described oil guide pipe (29) one ends stretch into the oil inlet hole that is positioned on described first boss.

5. elastic damping coupler according to claim 4, it is characterized in that, described cover plate (25) has second boss that extends to described packing holder (24) direction, oil inlet hole on the described cover plate (25) runs through this second boss, and described oil guide pipe (29) one ends stretch into the oil inlet hole that is positioned on described second boss.

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