Small-size parallel three-shaft gearbox

Abstract

The utility model belongs to the technical field of gear boxes, and particularly relates to a small-size parallel three-shaft gear box which comprises a box body, a shaft body is arranged in the box body, a bearing body is arranged on the outer side of the shaft body, and an outer sealing shell assembly is arranged on the outer side of the bearing body. The outer sealing shell assembly comprises an outer sealing oil supplementing shell, a pushing sealing extrusion ring and an elastic contact discharge ring, the outer sealing oil supplementing shell is provided with a storage cavity used for storing lubricating oil, and the storage cavity is located between the elastic contact discharge ring and the pushing sealing extrusion ring; the bearing body is arranged on the outer side of the shaft body, the bearing body is a thrust bearing, the overall size of the gearbox is greatly shortened, the installation space is saved, in the overhauling process, the sealing extrusion ring can be pressed and pushed, so that the interior of the storage cavity is extruded, stored lubricating oil enters the elastic contact discharge ring, and the service life of the gearbox is prolonged. And the oil supplementing amount can be controlled, and the service life of the bearing can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear boxes, and in particular relates to a small-sized parallel three-axis gear box. Background Art

[0002] A gearbox is a mechanical transmission device, usually composed of multiple gears, used to transmit power and torque. This device is usually used in large mechanical equipment and industrial machinery. Its function is to convert the speed and torque provided by the motor or other power source into the required output speed and torque. The gearbox converts the input speed and torque of the power source into the required output speed and torque through the engagement between the gears. The three-axis gearbox is a mechanical transmission device composed of three shafts, whose axes are the input shaft, intermediate shaft and output shaft respectively. These three shafts are usually arranged at 90 degrees to make its structure compact and simple. The three axes are crossed, and the input shaft, intermediate shaft and output shaft are arranged at 90 degrees to each other, so that the gearbox can realize complex transmission functions in a limited space. Through carefully designed gear combinations, the three-axis gearbox can achieve efficient transmission and reduce energy loss. Due to its structural characteristics and material selection, the three-axis gearbox can withstand large loads and is suitable for various industrial environments.

[0003] In a parallel three-axis gearbox, bearings are matched between the shafts. Some use tandem bearings, which makes the internal space of the gearbox larger. Insufficient lubrication on the bearings affects the bearing life. Too much lubrication will generate large resistance and affect the speed. Utility Model Content

[0004] The utility model provides a small-sized parallel three-axis gearbox, which has the characteristics of being able to shorten the size of the box body, greatly shortening the overall gearbox size, saving installation space, and being able to control the amount of oil replenishment, thereby increasing the service life of the bearings.

[0005] The utility model provides the following technical solution: a small-sized parallel three-axis gearbox, comprising a box body, a shaft body is arranged in the box body, a bearing body is arranged on the outside of the shaft body, an outer sealing shell assembly is arranged on the outside of the bearing body, the outer sealing shell assembly comprises an outer sealing oil replenishing shell, a push sealing extrusion ring and an elastic contact discharge ring, the outer sealing oil replenishing shell is provided with a storage cavity for storing lubricating oil, the storage cavity is located between the elastic contact discharge ring and the push sealing extrusion ring, and the outer end face of the elastic contact discharge ring is attached to the outer end face of the bearing body.

[0006] The outer sealing oil-replenishing housing is sleeved on the outer wall of the shaft body, and a threaded plunger for limiting the position is provided on the outer side of the outer sealing oil-replenishing housing.

[0007] The push seal extrusion ring is slidably connected to the outer seal oil replenishing housing, and the push seal extrusion ring is exposed outside the outer seal oil replenishing housing.

[0008] Wherein, a limit ring is fixedly connected to the push seal extrusion ring, a limit cavity is provided in the outer seal oil replenishing housing, and the limit ring is slidably connected in the limit cavity.

[0009] The elastic contact discharge ring is fixedly connected to the outer sealing oil supply housing, and the elastic contact discharge ring is made of polyurethane.

[0010] Wherein, the elastic contact discharge ring is provided with an extrusion groove, and the extrusion groove is a fine tapered groove.

[0011] Wherein, the bearing body is a thrust bearing, which is used to shorten the size of the box.

[0012] The beneficial effects of the utility model are:

[0013] By providing a bearing body on the outside of the shaft body, which is a thrust bearing, the size of the box body can be shortened, the overall size of the gear box can be greatly shortened, and the installation space is saved. During the maintenance process, the sealing extrusion ring can be pressed to cause an extrusion effect inside the storage cavity, and the stored lubricating oil enters the elastic contact discharge ring and is squeezed out by the extrusion groove. The amount of oil replenishment can be controlled, which can increase the service life of the bearing.

[0014] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 This is the main view of the utility model;

[0018] Figure 4 This is a schematic structural diagram of the external and internal sealed oil replenishing housing of the present invention;

[0019] In the figure: 1. Box body; 11. Shaft body; 12. Bearing body; 2. Outer sealing shell assembly; 21. Outer sealing oil replenishing shell; 211. Storage chamber; 212. Limiting chamber; 22. Push seal extrusion ring; 23. Elastic contact discharge ring; 231. Extrusion groove; 24. Limiting ring; 25. Threaded plunger. DETAILED DESCRIPTION

[0020] See also Figures 1-4The utility model provides the following technical solutions: it includes a box body 1, a shaft body 11 is provided in the box body 1, a bearing body 12 is provided on the outside of the shaft body 11, an outer sealing shell assembly 2 is provided on the outside of the bearing body 12, the outer sealing shell assembly 2 includes an outer sealing oil replenishing shell 21, a push sealing extrusion ring 22 and an elastic contact discharge ring 23, the outer sealing oil replenishing shell 21 is provided with a storage cavity 211 for storing lubricating oil, the storage cavity 211 is located between the elastic contact discharge ring 23 and the push sealing extrusion ring 22, and the outer end face of the elastic contact discharge ring 23 is attached to the outer end face of the bearing body 12.

[0021] In this embodiment: by providing a bearing body 12 on the outside of the shaft body 11, the bearing body 12 is a thrust bearing, which can shorten the size of the box body 1, greatly shorten the size of the overall gear box, and save installation space. The outer sealing shell assembly 2 includes an outer sealing oil replenishing shell 21, a push seal extrusion ring 22 and an elastic contact discharge ring 23. The outer sealing oil replenishing shell 21 is provided with a storage chamber 211 for storing lubricating oil. The storage chamber 211 is located between the elastic contact discharge ring 23 and the push seal extrusion ring 22. The outer end face of the elastic contact discharge ring 23 is attached to the outer end face of the bearing body 12. The elastic contact discharge ring 23 can be in contact with the oil replenishing part. The sealing extrusion ring 22 can be pushed and pressed during maintenance. While the sealing extrusion ring 22 is moving, the limiting ring 24 can slide in the limiting cavity 212 to position the sealing extrusion ring 22, so that an extrusion effect occurs inside the storage cavity 211, and the stored lubricating oil enters the elastic contact discharge ring 23 and is squeezed out by the extrusion groove 231. The amount of oil replenishment can be controlled, which can increase the service life of the bearing. During the extrusion process, the elastic contact discharge ring 23 has a buffer compression space, so that the lubricating oil is forced into the extrusion groove 231, and the extrusion groove 231 is opened for discharge.

[0022] The outer sealing oil replenishing housing 21 is sleeved on the outer wall of the shaft body 11, and a threaded plunger 25 for limiting the position is provided on the outside of the outer sealing oil replenishing housing 21; when installing the outer sealing oil replenishing housing 21, the threaded plunger 25 can be screwed into the outer sealing oil replenishing housing 21 so that one end of the threaded plunger 25 contacts the outer wall of the shaft body 11, thereby limiting the position of the outer sealing oil replenishing housing 21.

[0023] The push-sealing extrusion ring 22 is slidably connected to the outer sealing oil replenishing housing 21, and the push-sealing extrusion ring 22 is exposed on the outside of the outer sealing oil replenishing housing 21; the push-sealing extrusion ring 22 is located on the outside and can be operated through the set outer sealing oil replenishing housing 21, which is conducive to oil replenishing operation during maintenance.

[0024] A limit ring 24 is fixedly connected to the push seal extrusion ring 22, and a limit cavity 212 is provided in the outer seal oil replenishing housing 21. The limit ring 24 is slidably connected in the limit cavity 212. When the push seal extrusion ring 22 moves, the limit ring 24 can slide in the limit cavity 212 to position the push seal extrusion ring 22, so that the push seal extrusion ring 22 can move stably.

[0025] The elastic contact discharge ring 23 is fixedly connected to the outer sealing oil replenishing housing 21. The elastic contact discharge ring 23 is made of polyurethane. The elastic contact discharge ring 23 is provided with an extrusion groove 231, which is a fine tapered groove. During the extrusion process, the elastic contact discharge ring 23 has a buffer compression space, so that the lubricating oil is forced into the extrusion groove 231, and the extrusion groove 231 is opened for discharge.

[0026] The working principle and use process of the utility model are as follows: a bearing body 12 is provided on the outside of the shaft body 11, and the bearing body 12 is a thrust bearing, which can shorten the size of the box body 1, greatly shorten the size of the overall gear box, and save installation space. The outer sealing shell assembly 2 includes an outer sealing oil replenishing shell 21, a push seal extrusion ring 22 and an elastic contact discharge ring 23. The outer sealing oil replenishing shell 21 is provided with a storage chamber 211 for storing lubricating oil. The storage chamber 211 is located between the elastic contact discharge ring 23 and the push seal extrusion ring 22. The outer end face of the elastic contact discharge ring 23 is attached to the outer end face of the bearing body 12. The elastic contact discharge ring 23 can be in contact with the replenishing shell 21. The oil is in contact with the oil part, and during the maintenance process, the sealing extrusion ring 22 can be pushed by pressing. While the sealing extrusion ring 22 is moving, the limiting ring 24 can slide in the limiting cavity 212 to position the sealing extrusion ring 22, so that an extrusion effect occurs inside the storage cavity 211, and the stored lubricating oil enters the elastic contact discharge ring 23 and is squeezed out by the extrusion groove 231. The amount of oil replenishment can be controlled, which can increase the service life of the bearing. During the extrusion process, the elastic contact discharge ring 23 has a buffer compression space, so that the lubricating oil is forced into the extrusion groove 231, and the extrusion groove 231 is opened for discharge.

Claims

1. A small-sized parallel three-axis gearbox, comprising a housing (1), wherein a shaft (11) is provided in the housing (1), and characterized in that: A bearing body (12) is provided on the outside of the shaft body (11), and an outer sealing shell assembly (2) is provided on the outside of the bearing body (12). The outer sealing shell assembly (2) includes an outer sealing oil replenishing shell (21), a push sealing extrusion ring (22) and an elastic contact discharge ring (23). The outer sealing oil replenishing shell (21) is provided with a storage cavity (211) for storing lubricating oil. The storage cavity (211) is located between the elastic contact discharge ring (23) and the push sealing extrusion ring (22). The outer end surface of the elastic contact discharge ring (23) is attached to the outer end surface of the bearing body (12).

2. A small-sized parallel three-axis gearbox according to claim 1, characterized in that: The outer sealing oil replenishing housing (21) is sleeved on the outer wall of the shaft body (11), and a threaded plunger (25) for limiting the position is provided on the outer side of the outer sealing oil replenishing housing (21).

3. The small-sized parallel three-axis gearbox according to claim 1, characterized in that: The push seal extrusion ring (22) is slidably connected to the outer seal oil replenishment housing (21), and the push seal extrusion ring (22) is exposed outside the outer seal oil replenishment housing (21).

4. The small-sized parallel three-axis gearbox according to claim 1, characterized in that: A limiting ring (24) is fixedly connected to the push seal extrusion ring (22), a limiting cavity (212) is provided on the outer seal oil replenishing housing (21), and the limiting ring (24) is slidably connected in the limiting cavity (212).

5. The small-sized parallel three-axis gearbox according to claim 1, characterized in that: The elastic contact discharge ring (23) is fixedly connected to the outer sealing oil supply housing (21), and the elastic contact discharge ring (23) is made of polyurethane.

6. The small-sized parallel three-axis gearbox according to claim 1, characterized in that: The elastic contact discharge ring (23) is provided with an extrusion groove (231), and the extrusion groove (231) is a fine tapered groove.

7. The small-sized parallel three-axis gearbox according to claim 1, characterized in that: The bearing body (12) is a thrust bearing and is used to shorten the size of the box body (1).

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