Helical bevel gear pair contact patch adjustment device

Abstract

The utility model relates to gear box technical field especially relates to a spiral bevel gear pair contact spot adjusting device, including the horizontal installation in the gear box body gear shaft, fixedly installed with driven spiral bevel gear on the gear shaft, still include the vertical installation in the gear box body driving spiral bevel gear, the both ends of gear shaft are respectively equipped with tapered roller bearing, the bearing end cover of coaxial center with gear shaft is fixedly installed on the gear box body, the bearing gland is slidably installed between bearing end cover and tapered roller bearing in the gear box inside, and the axle core department of bearing end cover is screw -threaded and is installed with adjusting screw, through the adjusting screw on bearing end cover, the displacement of bearing gland along gear shaft axial is adjusted, thereby promotes tapered roller bearing, thereby adjusts the meshing spot and axial clearance of driven spiral bevel gear, reaches the purpose of adjustment, process operation is simple, and the cost is low, improves production efficiency, greatly promotes the assembly process of spiral bevel gear box.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a device for adjusting the contact spot of a spiral bevel gear pair. Background Technology

[0002] Gearbox reducers are widely used in industry and other fields, and the manufacturing and assembly of gearboxes are relatively mature. However, for precision spiral bevel gearboxes, adjusting the contact pattern of the gear pairs during assembly is relatively complex and difficult. The common adjustment method involves measuring the axial dimension and adjusting shims, which is time-consuming, labor-intensive, and quite complicated. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a spiral bevel gear pair contact spot adjustment device that is simple to operate, highly efficient, low in cost, and effectively improves the assembly process of spiral bevel gearboxes.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a spiral bevel gear pair contact spot adjustment device, including a gear shaft horizontally installed in the gearbox housing, a driven spiral bevel gear fixedly installed on the gear shaft, and a driving spiral bevel gear vertically installed in the gearbox housing, the driving spiral bevel gear meshing with the driven spiral bevel gear, tapered roller bearings respectively fitted at both ends of the gear shaft, a bearing end cover coaxial with the gear shaft fixedly installed on the gearbox housing, a bearing pressure cover slidably installed inside the gearbox housing between the bearing end cover and the tapered roller bearing, the edge of the bearing pressure cover abutting against the outer ring of the tapered roller bearing, and an adjusting screw threadedly installed at the center of the bearing end cover, the inner end of the adjusting screw abutting against the bearing pressure cover.

[0005] As a preferred technical solution, the bearing end cover is disc-shaped, comprising a central disc and an mounting edge integrally formed with the central disc. The thickness of the mounting edge is less than the thickness of the central disc. The outer diameter of the central disc is consistent with the diameter of the gear shaft hole. Mounting holes are evenly distributed on the mounting edge for fixed connection with the gearbox housing. A threaded hole for cooperating with the adjusting screw is provided at the axial center of the bearing end cover.

[0006] As a preferred technical solution, the bearing cover is disc-shaped, and a pressure ring is provided on the edge of the bearing cover protruding to one side. The end face of the pressure ring is flat, and the pressure ring faces the outer ring of the tapered roller bearing. The outer diameter of the bearing cover is equal to the outer diameter of the central disc.

[0007] As a preferred technical solution, the thickness of the pressure ring is less than the thickness of the outer ring of the tapered roller bearing.

[0008] As a preferred technical solution, the adjusting screw is a fine-thread screw, which has a sealing function.

[0009] As a preferred technical solution, the length of the adjusting screw is greater than the thickness of the central disk.

[0010] As a preferred technical solution, the tail end of the adjusting screw is provided with an adjusting hole, and the front end face of the adjusting screw is a plane.

[0011] Due to the adoption of the above technical solution, the spiral bevel gear pair contact pattern adjustment device includes a gear shaft horizontally installed inside the gearbox housing, a driven spiral bevel gear fixedly installed on the gear shaft, and a driving spiral bevel gear vertically installed inside the gearbox housing. The driving spiral bevel gear meshes with the driven spiral bevel gear. Tapered roller bearings are respectively fitted at both ends of the gear shaft. A bearing end cover coaxial with the gear shaft is fixedly installed on the gearbox housing. A bearing pressure cover is slidably installed inside the gearbox housing between the bearing end cover and the tapered roller bearing. The edge of the bearing pressure cover abuts against the outer ring of the tapered roller bearing. An adjusting screw is threaded at the axial center of the bearing end cover, and the inner end of the adjusting screw abuts against the bearing pressure cover. The beneficial effects of this utility model are: by adjusting the adjusting screw on the bearing end cover, the displacement of the bearing pressure cover along the axial direction of the gear shaft is adjusted, thereby pushing the tapered roller bearing, thereby adjusting the meshing pattern and axial clearance of the driven spiral bevel gear, achieving the adjustment purpose. The process is simple to operate, low in cost, improves production efficiency, and greatly enhances the assembly process of the spiral bevel gearbox. Attached Figure Description

[0012] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0013] Figure 1 This is a schematic diagram of the structure of the spiral bevel gear pair contact spot adjustment device of this utility model;

[0014] Figure 2 This is a schematic diagram of the bearing end cover of the spiral bevel gear pair contact spot adjustment device of this utility model;

[0015] Figure 3 yes Figure 2 Sectional view along the middle AA direction;

[0016] Figure 4 yes Figure 1 A magnified view of a section at point I.

[0017] In the diagram: 1-Gearbox housing; 2-Gear shaft; 3-Driven spiral bevel gear; 4-Driven spiral bevel gear; 5-Tapered roller bearing; 6-Bearing end cover; 61-Center disc; 62-Mounting edge; 63-Mounting hole; 64-Threaded hole; 7-Bearing cover; 71-Pressure ring; 8-Adjusting screw; 81-Adjusting hole. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0019] like Figures 1 to 4 As shown, the spiral bevel gear pair contact pattern adjustment device includes a gear shaft 2 horizontally installed inside the gearbox housing 1, a driven spiral bevel gear 3 fixedly installed on the gear shaft 2, and a driving spiral bevel gear 4 vertically installed inside the gearbox housing 1. The driving spiral bevel gear 4 meshes with the driven spiral bevel gear 3. Tapered roller bearings 5 ​​are respectively fitted at both ends of the gear shaft 2. A bearing end cover 6 coaxial with the gear shaft 2 is fixedly installed on the gearbox housing 1. The bearing end cover 6 and the tapered roller bearing 5 are slidably installed inside the gearbox housing 1. The bearing end cover 7 has an edge that abuts against the outer ring of the tapered roller bearing 5. An adjusting screw 8 is threaded onto the shaft of the bearing end cover 6, and the inner end of the adjusting screw 8 abuts against the bearing end cover 7. By adjusting the adjusting screw 8 on the bearing end cover 6, the bearing end cover 7 is displaced axially along the gear shaft 2, thereby pushing the tapered roller bearing 5, thereby adjusting the meshing pattern and axial clearance of the driven spiral bevel gear 3, achieving the purpose of adjustment. The process is simple to operate, low in cost, improves production efficiency, and greatly enhances the assembly process of the spiral bevel gearbox.

[0020] like Figure 2 and Figure 3As shown, the bearing end cover 6 is disc-shaped, comprising a central disc 61 and an integrally formed mounting edge 62. The thickness of the mounting edge 62 is less than the thickness of the central disc 61. The outer diameter of the central disc 61 matches the diameter of the shaft hole of the gear shaft 2. Mounting holes 63 are evenly distributed on the mounting edge 62 for fixed connection with the gearbox housing 1. A threaded hole 64 for mates with the adjusting screw 8 is provided at the center of the bearing end cover 6. The shaft hole of the gear shaft 2 horizontally penetrates the gearbox. The mounting edge 62 of the bearing end cover 6 fits against the gearbox housing 1, and the central disc 61 extends into the shaft hole of the gear shaft 2. The outer edge of the central disc 61 seals against the shaft hole wall. Screws are installed in the mounting holes 63 to fix the mounting edge 62 to the gearbox housing 1.

[0021] like Figure 1 and Figure 4 As shown, the bearing cap 7 is disc-shaped, with a pressure ring 71 protruding from one side of its edge. The end face of the pressure ring 71 is flat, and the pressure ring 71 faces the outer ring of the tapered roller bearing 5. The outer diameter of the bearing cap 7 is equal to the outer diameter of the central disc 61. The outer surface of the pressure ring 71 seals with the shaft hole of the gear shaft 2, and the pressure ring 71 abuts against the outer ring of the tapered roller bearing 5. When the adjusting screw 8 is rotated inward, it pushes the pressure ring 71 to apply force to the outer ring of the tapered roller bearing 5, thereby pushing the driven spiral bevel gear 3 to move axially, adjusting the contact pattern and axial clearance of the gear pair.

[0022] like Figure 1 and Figure 4 As shown, the thickness of the retaining ring 71 is less than the thickness of the outer ring of the tapered roller bearing 5. This ensures that force is applied only to the outer ring. However, the thickness of the retaining ring 71 cannot be too thin, otherwise the bearing capacity will be insufficient. Therefore, the preferred thickness of the retaining ring 71 is slightly less than the thickness of the outer ring of the tapered roller bearing 5.

[0023] Adjusting screw 8 is a fine-thread screw, which has a sealing function.

[0024] like Figure 1 and Figure 4 As shown, the length of the adjusting screw 8 is greater than the thickness of the central disc 61. The length of the adjusting screw 8 is long enough to apply pressure to the bearing cap 7.

[0025] like Figure 1 and Figure 4 As shown, the adjusting screw 8 has an adjusting hole 81 at its tail end, and the front end face of the adjusting screw 8 is flat. The adjusting hole 81 facilitates adjustment with a wrench or similar tool, and the flat front end face of the adjusting screw 8 ensures more even force distribution. One adjusting screw 8 is installed on each of the left and right bearing end caps 6, respectively controlling the axial displacement of the driven spiral bevel gears 3 on the left and right sides.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for adjusting the contact spot of a spiral bevel gear pair, characterized in that: The gearbox includes a gear shaft (2) horizontally mounted inside the gearbox housing (1), on which a driven spiral bevel gear (3) is fixedly mounted, and a driving spiral bevel gear (4) vertically mounted inside the gearbox housing (1). The driving spiral bevel gear (4) meshes with the driven spiral bevel gear (3). Tapered roller bearings (5) are respectively fitted at both ends of the gear shaft (2). A bearing end cap (6) coaxial with the gear shaft (2) is fixedly mounted on the gearbox housing (1). A bearing cover (7) is slidably mounted inside the gearbox housing (1) between the bearing end cap (6) and the tapered roller bearing (5). The edge of the bearing cover (7) abuts against the outer ring of the tapered roller bearing (5). An adjusting screw (8) is threaded at the center of the bearing end cap (6), and the inner end of the adjusting screw (8) abuts against the bearing cover (7).

2. The spiral bevel gear pair contact spot adjustment device as described in claim 1, characterized in that: The bearing end cover (6) is disc-shaped. The bearing end cover (6) includes a central disc (61) and a mounting edge (62) integrally formed with the central disc (61). The thickness of the mounting edge (62) is less than the thickness of the central disc (61). The outer diameter of the central disc (61) is consistent with the diameter of the shaft hole of the gear shaft (2). Mounting holes (63) are evenly distributed on the mounting edge (62) for fixed connection with the gearbox housing (1). A threaded hole (64) for cooperating with the adjusting screw (8) is opened at the axial center of the bearing end cover (6).

3. The spiral bevel gear pair contact spot adjustment device as described in claim 2, characterized in that: The bearing cap (7) is disc-shaped. The edge of the bearing cap (7) protrudes to one side and is provided with a pressure ring (71). The end face of the pressure ring (71) is flat. The pressure ring (71) faces the outer ring of the tapered roller bearing (5). The outer diameter of the bearing cap (7) is equal to the outer diameter of the central disc (61).

4. The spiral bevel gear pair contact spot adjustment device as described in claim 3, characterized in that: The thickness of the pressure ring (71) is less than the thickness of the outer ring of the tapered roller bearing (5).

5. The spiral bevel gear pair contact spot adjustment device as described in claim 2, characterized in that: The adjusting screw (8) is a fine-thread screw and has a sealing function.

6. The spiral bevel gear pair contact spot adjustment device as described in claim 2, characterized in that: The length of the adjusting screw (8) is greater than the thickness of the central disk (61).

7. The spiral bevel gear pair contact spot adjustment device as described in any one of claims 2 to 6, characterized in that: The adjusting screw (8) has an adjusting hole (81) at its tail end, and the front end face of the adjusting screw (8) is a plane.

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