CN201561070U - Elastic damping coupling - Google Patents

Abstract

The embodiment of the utility model discloses an elastic damping coupling, comprising a cover plate, a flange and a seal ring seat and also comprising a bearing arranged between the cover plate and/or the flange and the sealing ring seat; the cover plate is provided with a groove for the bearing to be installed into; and a bearing inner ring arranged on the flange is sheathed on the seal ring seat, one side surface of the bearing is contacted with the flange, and the other side surface thereof is contacted with the seal ring seat. In the embodiment of the utility model, by arranging the bearing between the cover plate and/or the flange and the sealing ring seat, the axial and/or radial movement of the seal ring seat is limited, thus limiting the axial and/or radial displacement of a spline shaft, solving the problem of faster abrasion of the inner holes of the flange and a side plate, and enhancing the operation stability, the reliability and the safety of a power system.

Description

Elastic damping coupling

technical field

The utility model relates to the technical field of railway locomotive equipment manufacturing, in particular to an elastic damping coupling.

Background technique

With the continuous development of engine design, the torsional vibration of the engine power unit has attracted more and more attention. In many cases, it is necessary to be able to effectively dampen torsional vibrations or shift dangerous resonances outside the engine's operating speed range.

It is suitable for connecting elastic damping couplings with one end belonging to a fixed structure (such as a diesel engine) and one end belonging to a movable structure (such as a cardan shaft), as shown in Figures 1 and 2, Figure 1 is an elastic damping coupling in the prior art Schematic diagram of the node structure, Figure 2 is a cross-sectional view of A-A in Figure 1. Wherein 1 is a spline shaft, 2 is a flange, 5 is a side plate, 6 is an O-ring, and 7 is a reed.

The flange 2 of the external member is connected with the diesel engine, the large diameter end of the spline shaft 1 is connected with the cardan shaft, and the flange of the external member of the elastic damping coupling transmits torque to the spline groove at the small diameter end of the spline shaft 1 through the reed 7 , so that the power is transmitted to the cardan shaft through the spline shaft.

In the shaft system, the weight of the cardan shaft will be partly supported by the coupling, and the coupling will not be able to limit the axial expansion and radial movement of the cardan shaft. In this case, the direct impact is that the cardan shaft will move axially and radially during use, which will cause the wear of the inner hole of the side plate and the O-ring to increase, and increase the instability of the entire shaft system. . At the same time, it affects the cooperation between the spline shaft 1 and the side plate 5, so that the outer circle of the spline shaft 1 journal is in unilateral contact with the inner hole of the side plate 5, and the compression amount of the compressed rubber O-ring 6 is increased, resulting in coupling The inner hole of the joint O-ring 6 and the side plate 5 wears more, and the sealing of the O-ring 6 is not good, resulting in oil leakage of the coupling, and when the situation is serious, it will also cause the coupling reed 7 (see Figure 2 ) increased wear or fracture, affecting the safe operation of the power system.

Utility model content

In view of this, the utility model provides an elastic damping coupling to reduce the wear of the O-ring and ensure the safe operation of the power system.

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

An elastic damping coupling, including a cover plate, a flange, and a seal ring seat, and also includes a bearing arranged on the cover plate and/or between the flange and the seal ring seat;

A slot for the bearing to be installed is arranged on the cover plate;

The inner ring of the bearing arranged on the flange is sleeved on the sealing ring seat, and one side of the bearing is in contact with the flange, and the other side is in contact with the sealing ring seat.

Preferably, in the above-mentioned elastic damping coupling, oil holes are arranged on the sealing ring seat.

Preferably, in the above-mentioned elastic damping coupling, the bearing is an anti-friction bearing.

It can be seen from the above technical solutions that the embodiment of the utility model restricts the axial direction and/or Radial movement, so as to limit the axial and/or radial displacement of the spline shaft, play a role in supporting the cardan shaft and wear resistance, and solve the problem of rapid wear of the inner hole of the flange and the inner hole of the side plate. It effectively solves the problems of wear and oil leakage in the connection between the coupling, the cardan shaft and the diesel engine, improves the service performance and life of the coupling itself, and enhances the running stability, reliability and safety of the power system . The above improvements have not affected the torsional vibration characteristics and technical indicators of the diesel engine power system. In addition, there are oil holes drilled on the sealing ring seat, which can lubricate the bearing with lubricating oil and increase the service life.

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 utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of an elastic damping coupling in the prior art;

Fig. 2 is A-A sectional view 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-A sectional view of Fig. 3;

Fig. 5 is a schematic diagram of the structure of the gasket seat provided by the embodiment of the present invention;

FIG. 6 is a C-C sectional view of FIG. 5 .

Detailed ways

The utility model provides an elastic damping coupling to reduce the wear of an O-shaped sealing ring and ensure the safe operation of a power system.

The basic idea of using the new embodiment to solve the above problems is to reduce the wear of the O-ring and ensure the safe operation of the power system by limiting the axial and/or radial movement of the spline shaft. A bearing is arranged on the cover plate and/or between the flange and the sealing ring seat, which limits the axial and/or radial movement of the sealing ring seat, thereby limiting the axial and/or radial displacement of the spline shaft, that is, It reduces the wear on the O-ring and solves the problem of fast wear on the inner hole of the flange and the inner hole of the side plate. It effectively solves the problems of wear and oil leakage in the connection between the coupling, the cardan shaft and the diesel engine, improves the service performance and life of the coupling itself, and enhances the running stability, reliability and safety of the power system . The above improvements have not affected the torsional vibration characteristics and technical indicators of the diesel engine power system.

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, Fig. 4, Fig. 5, Fig. 6, Fig. 3 is a structural schematic diagram of the elastic damping coupling provided by the embodiment of the utility model, Fig. 4 is a sectional view of A-A of Fig. 3, and Fig. 5 is provided by the embodiment of the utility model Schematic diagram of the sealing washer seat structure; Figure 6 is a C-C sectional view of Figure 5.

Wherein 1 is a spline shaft, 2 is a flange, 3 is a cover plate, 4 is a sealing ring seat, 5 is a side plate, 6 is an O-shaped sealing ring, 7 is a reed, 8 is a bearing, and 41 is an oil hole.

The flange 2 of the external member is connected to the diesel engine, the large diameter end of the spline shaft 1 is connected to the cardan shaft, and the flange 2 transmits torque to the spline groove at the small diameter end of the spline shaft 1 through the reed 7, so that the spline shaft 1 to transmit the power to the cardan shaft. A bearing 8 is arranged on the cover plate 3 and/or between the flange 2 and the sealing ring seat 4, and a groove for the bearing 8 to be installed is arranged on the cover plate; the inner part of the bearing arranged on the flange 2 The snare is set on the sealing ring seat 4 , and one side of the bearing is in contact with the flange 2 , and the other side is in contact with the sealing ring seat 4 . It can be seen that the bearing arranged in the groove of the cover plate 3 can limit the axial displacement of the spline shaft, and the bearing arranged between the flange 2 and the sealing ring seat 4 can limit the radial displacement of the spline shaft. For lubrication, an oil hole 41 is arranged on the sealing ring seat, and lubricating oil can lubricate the bearing through the oil hole 41, thereby increasing the service life of the bearing.

The sealing ring seat 4 is connected to the spline shaft 1 by bolts, and the bearing 8 limits the axial and/or radial movement of the sealing ring seat 4, thereby limiting the axial and/or radial displacement of the spline shaft 1 and acting as a support The cardan shaft and the wear-resisting effect solve the problem that the inner hole of the flange 2 and the inner hole of the side plate 5 wear quickly. The sealing ring seat 4 is drilled with an oil hole 41, which can lubricate the bearing with lubricating oil and increase the service life. Due to the limitation of the axial and radial movement of the spline shaft 1, the problem of uneven compression between the O-shaped rubber sealing ring 6 and the inner hole of the side plate 5 is alleviated, the wear of the rubber sealing ring is effectively reduced, and the The sealing effect of the gap at the joint improves the service life of the coupling and increases the stability of the entire shaft system. In order to improve the wear resistance of the bearing 8, the above-mentioned bearing is preferably an anti-friction bearing.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

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 (3)

1. an elastic damping coupler comprises, cover plate, flange and packing holder is characterized in that, also comprise be arranged on the described cover plate and/or described flange and described packing holder between bearing;

Described cover plate is provided with the groove of packing into for described bearing;

The inner ring that is arranged on the bearing on the described flange is enclosed within on the described packing holder, and a side of described bearing contacts with described flange, and the another side contacts with described packing holder.

2. elastic damping coupler as claimed in claim 1 is characterized in that described packing holder is provided with oilhole.

3. elastic damping coupler as claimed in claim 1 or 2 is characterized in that, described bearing is an anti-friction bearing.

Images