Novel bearing bush type elastic supporting structure of gearbox

Abstract

The utility model discloses a novel gearbox bearing bush type elastic supporting structure, which relates to the technical field of wind power generation equipment parts and comprises a bearing bush steel layer and a rubber elastomer, the bearing bush steel layer comprises an outer partition plate, a middle partition plate, an inner partition plate and a via hole, the middle partition plate is arranged on the inner side of the outer partition plate, and the inner partition plate is arranged on the inner side of the middle partition plate. According to the novel bearing bush type elastic supporting structure for the gearbox, the stress and deformation of middle rubber are maximum in the axial installation direction, mutual interference caused by deformation of the middle rubber can be reduced under the condition that the vertical torsional rigidity is guaranteed through the design of the rubber process holes, and therefore the fatigue performance of products is improved, and the service life of the products is prolonged. In addition, through via holes in the middle ends of the cambered surfaces of the outer partition plate, the middle partition plate and the inner partition plate are designed to reduce the weight of the steel plate and reduce the material cost, and a rubber injection bolt mold is easier to take out due to the unique rubber process hole design and the steel plate via hole design.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation equipment component technical field, concretely to a new type gear box bearing shell formula elastic support structure. BACKGROUND

[0002] The wind driven generator bearing shell formula gear box elastic support piece is used for damping support to the gear box of the wind driven generator, and the structure usually includes at least two layers of semicircular cylindrical bearing piece steel layers arranged coaxially, and vulcanization solidified rubber elastic bodies are arranged between the adjacent two layers of bearing piece steel layers, the support piece is installed in pairs in the gear box support seat to clamp and support the gear box shaft, and the rubber elastic body is usually an integral body along the axial direction in the structure, the length of the elastic body is increased along the axial direction, the pressure bearing area of the rubber is increased, the carrying capacity of the product can be improved, and the rigidity can be greatly improved.

[0003] However, the deformation and stress of the middle rubber are increased when the length along the axial direction is too long, the stress of the middle rubber is the largest and the rubber deformation is the largest along the axial installation direction through experiments, the rubber is prone to shearing wear and powder phenomenon under the action of periodic fatigue load, if not replaced in time, the wear is aggravated, the rigidity of the product is continuously lost, finally, the deformation of the gear box is aggravated, and the vibration acceleration exceeds the standard, therefore, in the existing structure, the high carrying capacity of the product and the reliability of the product become a pair of contradictions that are difficult to balance.

[0004] Therefore, in view of the above, the existing structure is improved, and a new type gear box bearing shell formula elastic support structure is provided. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a new type gear box bearing shell formula elastic support structure to solve the problems in the background art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a new type gear box bearing shell formula elastic support structure, including bearing piece steel layer and rubber elastic body, the bearing piece steel layer includes outer baffle, middle baffle, inner baffle and via, the middle baffle is arranged in the inner side of the outer baffle, and the inner baffle is arranged in the inner side of the middle baffle, and the via is penetrated and arranged in the arc surface middle end of the outer baffle, the middle baffle and the inner baffle, the rubber elastic body is arranged between the adjacent outer baffle and middle baffle and the middle baffle and inner baffle, the rubber elastic body includes outer layer rubber, inner layer rubber, separation groove and process hole, the inner layer rubber is arranged in the inner side of the outer layer rubber, the separation groove is arranged in the middle axial direction of the outer layer rubber and the inner layer rubber, and the process hole is diffused in the middle of the separation groove.

[0007] Furthermore, the outer partition, the middle partition and the inner partition are coaxial semi-cylindrical structures arranged at intervals, and an outer layer of rubber is vulcanized and solidified between the outer partition and the middle partition, and an inner layer of rubber is vulcanized and solidified between the middle partition and the inner partition.

[0008] Furthermore, the centers of the outer partition, the middle partition and the inner partition are located on a line, and the outer partition, the middle partition and the inner partition have an eccentricity.

[0009] Furthermore, the end surface profiles of the outer rubber layer and the inner rubber layer have a slope feature with a certain angle, and the inner side lengths of the outer rubber layer and the inner rubber layer are equal, while the outer side lengths gradually increase from the middle area to the two side areas along the arc.

[0010] Furthermore, the length of the outer rubber layer connecting to the outer partition is shorter than the length of the outer rubber layer connecting to the middle partition, and the length of the inner rubber layer connecting to the middle partition is shorter than the length of the inner rubber layer connecting to the inner partition.

[0011] Furthermore, the through-type through holes at the middle ends of the arc surfaces of the outer partition, the middle partition and the inner partition correspond to the process holes diffused in the middle of the separation groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In the utility model, the stress and deformation of the middle rubber are the largest along the axial installation direction. The rubber process hole design of the present application can reduce the mutual interference caused by the deformation of the middle rubber while ensuring the vertical torsional stiffness, thereby improving the fatigue performance of the product. In addition, the through-type through-hole design at the middle end of the arc surface of the outer partition, the middle partition and the inner partition reduces the weight of the steel plate and reduces the material cost. The unique rubber process hole design and steel plate through-hole design make the rubber injection pin mold easier to remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Fig. 1 This is a schematic diagram of the overall structure of the device of the utility model;

[0015] Fig. 2 This is a schematic diagram of the end structure of the device of the utility model;

[0016] Fig. 3 This is a schematic diagram of the structure of the rubber elastic body of the utility model.

[0017] In the figure: 1. Bushing steel layer; 101. Outer partition; 102. Middle partition; 103. Inner partition; 104. Through hole; 2. Rubber elastomer; 201. Outer rubber layer; 202. Inner rubber layer; 203. Separation groove; 204. Process hole. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0019] As Figs. 1 to 3As shown, a new gearbox bearing type elastic support structure includes a bearing steel layer 1 and a rubber elastomer 2. The bearing steel layer 1 includes an outer partition 101, a middle partition 102, an inner partition 103 and a through hole 104. The middle partition 102 is provided on the inner side of the outer partition 101, and the inner partition 103 is provided on the inner side of the middle partition 102. The outer partition 101, the middle partition 102 and the inner partition 103 are provided with a through hole 104 at the middle end of the arc surface. The through-type through hole 104 at the middle end of the arc surface of the outer partition 101, the middle partition 102 and the inner partition 103 reduces the weight of the steel plate and reduces the material cost. The unique rubber process hole 204 design and the steel plate through hole 104 design make the rubber injection pin mold easier to remove. The outer partition 101 and the middle partition 102 and the middle partition 102 and the inner partition 103 are provided with a rubber elastic body 2, and the rubber elastic body 2 includes an outer rubber layer 201, an inner rubber layer 202, a separation groove 203 and a process hole 204. The inner rubber layer 202 is provided on the inner side of the outer rubber layer 201, and the separation groove 203 is axially opened in the middle of the outer rubber layer 201 and the inner rubber layer 202, and the process hole 204 is diffused in the middle of the separation groove 203. The outer partition 101, the middle partition 102 and the inner partition 103 are coaxial semi-cylindrical structures arranged at intervals, and the outer rubber layer 201 is vulcanized and solidified between the outer partition 101 and the middle partition 102, and the separation groove 203 is provided between the middle partition 102 and the inner partition 103. The inner rubber 202 is vulcanized and solidified, and the centers of the outer diaphragm 101, the middle diaphragm 102 and the inner diaphragm 103 are located on a line, and the outer diaphragm 101, the middle diaphragm 102 and the inner diaphragm 103 have an eccentricity. The end face profiles of the outer rubber 201 and the inner rubber 202 are slope features with a certain angle, and the inner side lengths of the outer rubber 201 and the inner rubber 202 are equal, while the outer side lengths gradually increase from the middle area to the two side areas along the arc. The length of the outer rubber 201 connected to the outer diaphragm 101 is less than the length of the outer rubber 201 connected to the middle diaphragm 102, and the length of the inner rubber 202 connected to the middle diaphragm 102 is less than the length of the inner rubber 202 connected to the inner diaphragm 103. The through-type through-holes 104 at the middle ends of the arc surfaces of the outer partition 101, the middle partition 102 and the inner partition 103 correspond to the process holes 204 diffused in the middle of the dividing groove 203. In the direction of axial installation, the stress and deformation of the middle rubber are the largest. The rubber process holes 204 of the present application can reduce the mutual interference caused by the deformation of the middle rubber while ensuring the vertical torsional stiffness, thereby improving the fatigue performance of the product. During injection, an elliptical cylinder (with a cross-section in the shape of the steel plate through-hole 104) is used in conjunction with the pin. After the rubber injection is completed, the demolding operation is as follows: remove the elliptical cylinder, push the pin to the rubber process hole 204 and drop it. The rubber dividing groove 203 diffuses the process hole 204 with a narrow front and wide back design to facilitate the removal of the pin.

[0020] Working principle: When using this new gearbox bearing elastic support structure, the stress and deformation of the middle rubber are the largest along the axial installation direction. The rubber process hole 204 design of this application can reduce the mutual interference caused by the deformation of the middle rubber while ensuring the vertical torsional stiffness, thereby improving the fatigue performance of the product. In addition, the through-type through hole 104 design at the middle end of the arc surface of the outer partition 101, the middle partition 102 and the inner partition 103 reduces the weight of the steel plate and reduces the material cost. The unique rubber process hole 204 design and the steel plate through hole 104 design make the rubber injection pin mold easier to remove.

[0021] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A new gearbox bearing type elastic support structure, characterized in that: The invention comprises a bearing plate steel layer (1) and a rubber elastic body (2), wherein the bearing plate steel layer (1) comprises an outer partition (101), a middle partition (102), an inner partition (103) and a through hole (104), wherein the inner side of the outer partition (101) is provided with a middle partition (102), and the inner side of the middle partition (102) is provided with an inner partition (103), and the outer partition (101), the middle partition (102) and the inner partition (103) are provided with a through hole (104) at the middle end of the arc surface, and the adjacent outer partition (101) and the middle partition are provided with a through hole (104). A rubber elastic body (2) is provided between the plate (102) and the middle diaphragm (102) and the inner diaphragm (103), wherein the rubber elastic body (2) comprises an outer rubber layer (201), an inner rubber layer (202), a separation groove (203) and a process hole (204); the inner rubber layer (202) is provided inside the outer rubber layer (201), and a separation groove (203) is axially provided in the middle of the outer rubber layer (201) and the inner rubber layer (202), and a process hole (204) is diffused in the middle of the separation groove (203).

2. A novel gearbox bearing bushing elastic support structure according to claim 1, characterized in that: The outer partition (101), the middle partition (102) and the inner partition (103) are coaxial semi-cylindrical structures arranged at intervals, and an outer layer of rubber (201) is vulcanized and solidified between the outer partition (101) and the middle partition (102), and an inner layer of rubber (202) is vulcanized and solidified between the middle partition (102) and the inner partition (103).

3. The novel gearbox bearing bushing elastic support structure according to claim 1 is characterized in that: The centers of the outer partition (101), the middle partition (102) and the inner partition (103) are located on a line, and the outer partition (101), the middle partition (102) and the inner partition (103) have an eccentricity.

4. The novel gearbox bearing bushing elastic support structure according to claim 1 is characterized in that: The end surface profiles of the outer rubber layer (201) and the inner rubber layer (202) have a slope characteristic at a certain angle, and the inner lengths of the outer rubber layer (201) and the inner rubber layer (202) are equal, while the outer lengths gradually increase from the middle area to the two side areas along the arc.

5. The novel gearbox bearing bushing elastic support structure according to claim 1 is characterized in that: The length of the outer rubber layer (201) connected to the outer diaphragm (101) is shorter than the length of the outer rubber layer (201) connected to the middle diaphragm (102), and the length of the inner rubber layer (202) connected to the middle diaphragm (102) is shorter than the length of the inner rubber layer (202) connected to the inner diaphragm (103).

6. The novel gearbox bearing bushing elastic support structure according to claim 1 is characterized in that: The through-type through holes (104) at the middle ends of the arc surfaces of the outer partition (101), the middle partition (102) and the inner partition (103) correspond to the process holes (204) diffused in the middle of the separation groove (203).

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