CN216279066U

CN216279066U - Novel elastic coupling

Info

Publication number: CN216279066U
Application number: CN202122950933.5U
Authority: CN
Inventors: 张里丽; 张永胜; 魏加洁; 刘占胜; 王伟
Original assignee: Science and Technology Branch of XCMG
Current assignee: Science and Technology Branch of XCMG
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-04-12
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a novel elastic coupling for connecting a prime motor and a working machine. Comprises a torque converter end fixed disc and an engine end fixed disc; the fixed disc at the torque converter end is connected with the impeller of the torque converter, and the fixed disc at the engine end is connected with the engine flywheel; a central shaft is fixed at the shaft center of the torque converter fixed disc, and a self-aligning roller bearing is arranged on the central shaft; the axle center of the fixed disc at the engine end is provided with a step hole matched with the self-aligning roller bearing; a circle of circumferential elastic body is fixed on the fixed disc at the end of the engine, and the circumferential elastic body is opposite to the self-aligning roller bearing in the radial direction. The utility model adopts the layout mode of the inner roller bearing and the outer circumferential elastomer, has small axial size and compact structure, does not increase the length of the whole machine, and optimizes the structural layout of the whole machine; the elastic coupling adopts a coupling formed by compounding a maintenance-free self-aligning roller bearing and a circumferential elastic body together, automatically adjusts the condition of the abnormal axis, controls the axial displacement deviation and the radial displacement deviation of the coupling, and greatly prolongs the service life of a transmission element.

Description

Novel elastic coupling

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a novel elastic coupling for connecting a prime mover and a working machine.

Background

The loader is provided with an engine as a driving device, and the engine is matched with a transmission system to drive a vehicle to normally run, wherein the torque transmitted to the transmission system by the engine is periodically changed, so that the transmission system is easy to generate corresponding torsional vibration, and if the vibration frequency is superposed with the self-vibration frequency of the transmission system, resonance can be generated, and the influence on the service life of related parts of the transmission system is large. To solve this problem, an elastic coupling is usually provided between the engine and the torque converter to alleviate the torsional impact load of the transmission system under unstable conditions.

Although the existing elastic coupling has a certain vibration damping effect, the effect of displacement compensation is not obvious. The engine flywheel shaft and the torque converter input shaft cannot be concentric in the installation process, and the two shafts have certain relative displacement under the condition that the engine runs at a high speed, so that the stable transmission of power is not facilitated.

Specifically, the elastic coupling generally has two structures, one is damping by using a damping spring arranged in the circumferential direction, and the other is damping by using an elastic material with damping performance, and these techniques can achieve the effect of absorbing vibration and transmit torque, but the displacement deviation of the elastic coupling itself cannot be guaranteed in a very small range, so that the coaxiality of the torque converter and the engine is difficult to guarantee, and the risk of shaft breakage of the torque converter is easy to occur.

In relation to the above problems, some couplings have a thrust bearing on one side to ensure that the coupling has a certain axial compensation. However, the axial distance of the coupler is increased due to the structure, so that the connection distance between the engine and the gearbox is increased, the length of the whole machine is increased, the power is unstable, and the structural layout of the whole machine is influenced.

Disclosure of Invention

The utility model aims to provide a novel elastic coupling, which reduces the axial size of the coupling and optimizes the structural layout of the whole coupling by adopting the layout mode of an inner roller bearing and an outer circumferential elastic body.

The utility model is realized by the following technical scheme: a novel elastic coupling comprises a torque converter end fixing disc and an engine end fixing disc; the fixed disc at the torque converter end is connected with the impeller of the torque converter, and the fixed disc at the engine end is connected with the engine flywheel; a central shaft is fixed at the shaft center of the torque converter fixed disc, and a self-aligning roller bearing is arranged on the central shaft; the axle center of the fixed disc at the engine end is provided with a step hole matched with the self-aligning roller bearing; the engine end fixing disc is fixedly provided with a circle of circumferential elastic bodies which are coaxial with the engine end fixing disc, the circumferential elastic bodies are opposite to the self-aligning roller bearing in the radial direction, and the inner ring of each circumferential elastic body is connected with the torque converter end fixing disc.

It further comprises the following steps: the periphery of the torque converter end fixing disc is provided with connecting holes, and the torque converter end fixing disc is connected with the torque converter impeller through a torque converter end fixing bolt.

The periphery of the engine end fixing disc is provided with connecting holes, and the engine end fixing disc is connected with an engine flywheel through a flywheel end fixing bolt.

And a flange plate is arranged at one end of the central shaft close to the fixed disc at the end of the torque converter, and the flange plate of the central shaft is connected with the fixed disc of the torque converter through a screw.

The one end that the center pin is close to engine end fixed disk has the step axle, self-aligning roller bearing cooperation is installed between the step axle of center pin and the step hole of engine end fixed disk.

Connecting holes are formed in the circumferential elastomer inner ring and the circumferential elastomer outer ring respectively, the circumferential elastomer outer ring is connected with the engine end fixing disc through a circumferential elastomer fixing bolt I, and the circumferential elastomer inner ring is connected with the torque converter end fixing disc through a circumferential elastomer fixing bolt II.

The circumferential elastic body is in a ring shape and is made of multiple pieces of natural rubber or thermoplastic elastic materials.

Compared with the prior art, the utility model has the beneficial effects that:

the elastic coupling adopts a circumferential compact layout, adopts a layout mode of an inner side roller bearing and an outer side circumferential elastic body, has small axial size and compact structure, does not increase the length of the whole machine, and optimizes the structural layout of the whole machine;

the elastic coupling adopts a coupling formed by compounding a maintenance-free self-aligning roller bearing and a circumferential elastic body together, automatically adjusts the condition of the abnormal axis, controls the axial displacement deviation and the radial displacement deviation of the coupling, and greatly improves the service life of a transmission element;

the structural components of the elastic coupling are completely detachable, so that the elastic coupling is easy to replace and maintain;

the circumferential elastic body can select sheet materials with corresponding thicknesses according to different elastic quantities, so that vibration can be absorbed and impact can be alleviated, and meanwhile, the axial distance of the circumferential elastic body can be adjusted according to the absorbed vibration quantity, so that the flexibility is high;

the elastic coupling adopts a maintenance-free self-aligning roller bearing, so that periodic lubrication is not needed, and the later maintenance cost is low.

Drawings

FIG. 1 is a schematic view of the installation of the present invention

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

in the figure: 1. the torque converter comprises a torque converter impeller, 2, an elastic coupling, 3, an engine flywheel, 4, screws, 5, a torque converter end fixing disc, 6, a torque converter end fixing bolt, 7, a circumferential elastic body, 8, a flywheel end fixing bolt, 9, an engine end fixing disc, 9-1, a step hole, 10, a central shaft, 11, a self-aligning roller bearing, 12, circumferential elastic body fixing bolts I and 13 and a circumferential elastic body fixing bolt II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, an elastic coupling 2 is connected between a torque converter impeller 1 and an engine flywheel 3.

The elastic coupling 2 comprises a torque converter end fixing disc 5 and an engine end fixing disc 9. The periphery of the torque converter end fixing disc 5 is provided with a connecting hole, and the torque converter end fixing disc 5 is connected with the left torque converter impeller 1 through a torque converter end fixing bolt 6. The central shaft 10 is provided with a flange close to the left end, the flange of the central shaft 10 is fixed on the right side surface of the fixed disc 5 of the torque converter end through a screw 4, and the central shaft 10 and the fixed disc 5 of the torque converter end are coaxial. The right end of the center shaft 10 has a stepped shaft.

The periphery of the engine end fixing disc 9 is provided with connecting holes, and the engine end fixing disc 9 is connected with the engine flywheel 3 through a flywheel end fixing bolt 8. The left axle center of the engine end fixing disc 9 is provided with a step hole 9-1. The self-aligning roller bearing 11 is fitted between the stepped shaft of the central shaft 10 and the stepped hole 9-1 of the engine-end fixed disk 9. The maintenance-free self-aligning roller bearing 11 can automatically adjust the condition of the non-normal axis, control the radial displacement deviation of the coupler and bear radial and bidirectional axial loads. The self-aligning roller bearing 11 does not need to be lubricated regularly, and the later maintenance cost is low.

Connecting holes are respectively formed in the inner ring and the outer ring of the circumferential elastic body 7, the outer ring of the circumferential elastic body 7 is coaxially connected with the engine end fixing disc 9 through a circumferential elastic body fixing bolt I12, and the inner ring of the circumferential elastic body 7 is coaxially connected with the torque converter end fixing disc 5 through a circumferential elastic body fixing bolt II 13. The circumferential elastic body 7 is opposite to the self-aligning roller bearing 11 in the radial direction, and the layout mode of the inner side roller bearing and the outer side circumferential elastic body is small in overall axial size and compact in structure, the length of the whole machine is not increased, and the structural layout of the whole machine is optimized.

Preferably, the circumferential elastic body 7 is made of a multi-piece natural rubber or thermoplastic elastic material. The circumferential elastic body 7 is used for absorbing vibration and mitigating impact, sheet materials can be added according to the requirement of vibration reduction, and meanwhile, the central shaft 10 can select corresponding dimension specifications according to the thickness of the circumferential elastic body 7.

In the embodiment, the elastic coupling 2 is arranged between the torque converter impeller 1 and the engine flywheel 3, so that the torsional impact load of the transmission system under the unstable working condition is alleviated. The elastic coupling 2 adopts a maintenance-free self-aligning roller bearing and circumferential elastomer composite structure, automatically adjusts the condition of the abnormal axis, controls the axial and radial displacement deviation of the coupling, and greatly improves the service life of a transmission element. The elastic coupling 2 is of a completely detachable structure, is easy to replace and maintain, and has high flexibility because the axial distance can be adjusted according to the absorbed vibration quantity.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the utility model as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A novel elastic coupling comprises a torque converter end fixing disc (5) and an engine end fixing disc (9); the fixed disc (5) at the torque converter end is connected with the impeller (1) of the torque converter, and the fixed disc (9) at the engine end is connected with the flywheel (3) of the engine; the method is characterized in that: a central shaft (10) is fixed on the axis of the torque converter end fixing disc (5), and a self-aligning roller bearing (11) is installed on the central shaft (10); the axle center of the engine end fixing disc (9) is provided with a step hole (9-1) matched with the self-aligning roller bearing (11); a circle of circumferential elastic bodies (7) coaxial with the engine end fixing disc (9) are fixed on the engine end fixing disc (9), the circumferential elastic bodies (7) are opposite to the self-aligning roller bearing (11) in the radial direction, and the inner ring of each circumferential elastic body (7) is connected with the torque converter end fixing disc (5).

2. A novel elastomeric coupling in accordance with claim 1 wherein: the periphery of the torque converter end fixing disc (5) is provided with connecting holes, and the torque converter end fixing disc (5) is connected with the torque converter impeller (1) through a torque converter end fixing bolt (6).

3. A novel elastomeric coupling in accordance with claim 1 wherein: the periphery of the engine end fixing disc (9) is provided with connecting holes, and the engine end fixing disc (9) is connected with an engine flywheel (3) through a flywheel end fixing bolt (8).

4. A novel elastomeric coupling in accordance with claim 1 wherein: and a flange plate is arranged at one end of the central shaft (10) close to the torque converter end fixing plate (5), and the flange plate of the central shaft (10) is connected with the torque converter end fixing plate (5) through a screw (4).

5. A novel elastomeric coupling in accordance with claim 4 wherein: the center shaft (10) is close to one end of the engine end fixing disc (9) and is provided with a step shaft, and the self-aligning roller bearing (11) is installed between the step shaft of the center shaft (10) and a step hole (9-1) of the engine end fixing disc (9) in a matched mode.

6. A novel elastomeric coupling in accordance with claim 1 wherein: connecting holes are respectively formed in the inner ring and the outer ring of the circumferential elastic body (7), the outer ring of the circumferential elastic body (7) is connected with an engine end fixing disc (9) through a circumferential elastic body fixing bolt I (12), and the inner ring of the circumferential elastic body (7) is connected with a torque converter end fixing disc (5) through a circumferential elastic body fixing bolt II (13).

7. A novel elastomeric coupling in accordance with claim 1 wherein: the circumferential elastic body (7) is in a ring shape, and the circumferential elastic body (7) is made of multi-piece natural rubber or thermoplastic elastic material.