Gear transmission structure for speed reducer

Abstract

The gear transmission structure comprises a supporting base and a cover body fixedly connected to the top end of the supporting base, a transmission assembly used for transmission of the speed reducer is arranged on the side, opposite to the cover body, of the supporting base, and a plurality of oil injection structures used for adding lubricating oil are arranged at the top end of the cover body. The oil injection structure comprises an oil injection pipe, a sealing structure used for sealing the oil injection pipe is arranged at the top end of the oil injection pipe, and a fixing structure used for locking the sealing structure is arranged on one side of the sealing structure. Lubricating oil is accurately added into the gears through the oil injection pipes arranged at the top ends of the gears, meanwhile, corresponding sealing structures are arranged at the top ends of the oil injection pipes, dust and water vapor in the environment are prevented from corroding the gears, hands do not need to stretch into the cover body to add the lubricating oil, the hands of a user are prevented from being stained with the lubricating oil, and oil adding operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of gear transmission of a reducer, in particular to a gear transmission structure used for a reducer. Background Art

[0002] The gear transmission structure of the reducer includes parallel axis gear transmission. Parallel axis gear transmission generally refers to a device in which two or more gear shafts are located in parallel positions and transmit force and power through the meshing between gears of different diameters. The transmission structure of the reduction gear is generally composed of a protective housing, gears and a rotating shaft. In actual use, the transmission structure is meshed and connected with multiple gears, which will be repeatedly rubbed during rotation. Therefore, it is necessary to ensure the lubrication of the outer surface of the gears. Therefore, it is necessary to lubricate the gears by adding lubricating oil. However, the existing lubricating oil is generally added through an inspection window provided at the top of the protective housing. In the actual adding operation, the user is required to extend his hand into the protective housing to add lubricating oil to the gears in different positions. Due to the small internal space of the protective housing, the operation is inconvenient. At the same time, the user's hands may be contaminated with lubricating oil, which affects the normal adding of lubricating oil. Utility Model Content

[0003] The purpose of the utility model is to provide a gear transmission structure for a reducer to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gear transmission structure for a reducer, comprising a support base and a cover body fixedly connected to the top of the support base, a transmission assembly for the reducer transmission is arranged on the side opposite to the support base and the cover body, a plurality of oil injection structures for adding lubricating oil are arranged on the top of the cover body, the oil injection structure comprises an oil injection pipe, a sealing structure for sealing the oil injection pipe is arranged on the top of the oil injection pipe, and a fixing structure for locking the sealing structure is arranged on one side of the sealing structure;

[0005] The transmission assembly comprises a first rotating gear column, a first helical gear is meshed on the outer wall of the first rotating gear column, and a second rotating gear column is inserted and connected in the middle of the first helical gear;

[0006] The outer wall of the second rotating gear column is meshed with a second helical gear, the middle of the second helical gear is interlaced with a rotating shaft, and the inner cavity of the support base is rotatably interlaced with the outer wall of the first rotating gear column, the outer wall of the second rotating gear column and the outer wall of the rotating shaft respectively;

[0007] The sealing structure comprises a fixed block, the bottom end of the fixed block is fixedly connected to the top end of the cover body, the outer wall of the oil filling pipe is respectively connected to the top end of the cover body and the top end of the fixed block, and the top end of the fixed block is hinged with a sealing cover for sealing the oil filling pipe;

[0008] The fixing structure includes a threaded rod, one side of the fixing block is provided with a groove, the bottom end of the groove is hinged to the bottom end of the threaded rod, the side of the sealing cover close to the groove is provided with a connecting groove, the inner wall of the connecting groove and the outer wall of the threaded rod are slidably interlaced and connected.

[0009] Preferably, an elastic cone block is fixedly connected to the middle of the bottom end of the sealing cover, and the outer wall of the elastic cone block and the top end of the oil filling pipe are slidably interlaced and connected.

[0010] Preferably, the threaded sleeve at the top end of the outer wall of the threaded rod is provided with an internal threaded sleeve, the top end of the connecting groove is provided with a clamping groove, and the inner wall of the clamping groove and the outer wall of the internal threaded sleeve are rotatably interlaced and connected.

[0011] Technical effects and advantages of the utility model:

[0012] The utility model provides a corresponding oil filling structure at the top of the cover body, and lubricating oil is accurately added to multiple gears through the oil filling pipe provided at the top of each gear. At the same time, a corresponding sealing structure is provided at the top of the oil filling pipe to prevent dust and water vapor in the environment from corroding the gears. There is no need to put hands into the cover body to add lubricating oil, which prevents users' hands from being contaminated with lubricating oil, and facilitates the oil adding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front cross-sectional view of the overall structure of the utility model.

[0014] Figure 2 It is a top sectional view of the overall structure of the utility model.

[0015] Figure 3 This is a cross-sectional view of the oil injection pipe structure of the utility model.

[0016] Figure 4 For this utility model Figure 3 A magnified view of the structure in the middle.

[0017] Figure 5 This is a schematic diagram of the sealing cover structure of the utility model

[0018] In the figure: 1. support base; 2. cover body; 3. first rotating gear column; 4. second rotating gear column; 5. rotating shaft; 6. first helical gear; 7. second helical gear; 8. oil filling pipe; 9. fixing block; 901. groove; 10. sealing cover; 1001. elastic cone block; 1002. connecting groove; 1003. clamping groove; 11. threaded rod; 12. internal threaded sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-5 A gear transmission structure for a reducer shown in the figure includes a support base 1 and a cover body 2 fixedly connected to the top of the support base 1, a transmission component for reducer transmission is arranged on the opposite side of the support base 1 and the cover body 2, a plurality of oil injection structures for adding lubricating oil are arranged on the top of the cover body 2, the oil injection structure includes an oil injection pipe 8, a sealing structure for sealing the oil injection pipe 8 is arranged on the top of the oil injection pipe 8, and a fixing structure for locking the sealing structure is arranged on one side of the sealing structure.

[0021] It should be noted that, by arranging a corresponding oil filling structure at the top of the cover body 2, lubricating oil can be accurately added to multiple gears through the oil filling pipe 8 arranged at the top of each gear. At the same time, a corresponding sealing structure is arranged at the top of the oil filling pipe 8 to prevent dust and water vapor in the environment from corroding the gears. There is no need to put hands into the cover body 2 to add lubricating oil, which prevents the user's hands from being contaminated with lubricating oil, and facilitates the oil adding operation.

[0022] The transmission assembly includes a first rotating gear column 3 , an outer wall of which is meshed with a first helical gear 6 , and a second rotating gear column 4 is inserted and connected in the middle of the first helical gear 6 .

[0023] Furthermore, the first bevel gear 6 is driven to rotate by the rotation of the first rotating gear column 3, and it should be noted that the diameter of the first bevel gear 6 is larger than the diameter of the first rotating gear column 3, so that the power delivered by the motor is reduced and transmitted for the first time, and the first bevel gear 6 is stably rotated on the support base 1 through the second rotating gear column 4.

[0024] The outer wall of the second rotating gear column 4 is meshed with a second helical gear 7, the middle of the second helical gear 7 is inserted and connected with a rotating shaft 5, and the top of the support base 1 is rotatably inserted and connected with the outer wall of the first rotating gear column 3, the outer wall of the second rotating gear column 4 and the outer wall of the rotating shaft 5 respectively.

[0025] Furthermore, an outer wall of the second rotating gear column 4 is provided with an oblique thread on the front side of the first helical gear 6, and the second helical gear 7 is driven by the meshing between the second rotating gear column 4 and the second helical gear 7, and further, the power delivered by the motor is decelerated.

[0026] The sealing structure includes a fixed block 9, the bottom end of the fixed block 9 is fixedly connected to the top of the cover body 2, the outer wall of the oil filling pipe 8 is respectively connected to the top of the cover body 2 and the top of the fixed block 9, and the top of the fixed block 9 is hinged with a sealing cover 10 for sealing the oil filling pipe 8.

[0027] Furthermore, the oil filling pipe 8 is fixed to the cover body 2 by a fixing block 9, and the contact opening between the oil filling pipe 8 and the external environment is blocked by a sealing cover 10 to prevent moisture or dust in the external environment from entering the cover body 2 to corrode the gears and shorten the service life.

[0028] An elastic cone block 1001 is fixedly connected to the middle of the bottom end of the sealing cover 10, and the outer wall of the elastic cone block 1001 and the top end of the oil filling pipe 8 are slidably interlaced and connected.

[0029] Furthermore, the material of the elastic cone block 1001 is set to an elastic rubber material, and the shape of the elastic cone block 1001 is set to a conical protrusion, which gradually shrinks from top to bottom from a vertical plane, and the elastic cone block 1001 is pressed down by the sealing cover 10 to seal the oil filling pipe 8, and further, the top diameter of the elastic cone block 1001 is larger than the diameter of the top opening of the oil filling pipe 8, so that it is stably sealed.

[0030] The fixing structure includes a threaded rod 11, a groove 901 is opened on one side of the fixing block 9, the bottom end of the groove 901 is hinged to the bottom end of the threaded rod 11, and a connecting groove 1002 is opened on the side of the sealing cover 10 close to the groove 901, and the inner wall of the connecting groove 1002 and the outer wall of the threaded rod 11 are slidably interlaced and connected.

[0031] Furthermore, the threaded rod 11 is rotated to make it rotate in a vertical plane circle along the hinge, and the connection between the threaded rod 11 and the sealing cover 10 is completed through the connecting groove 1002 opened on the sealing cover 10. It should be noted that the connecting groove 1002 is opened as a square groove with a diameter larger than the diameter of the threaded rod 11.

[0032] An internal threaded sleeve 12 is provided on the top of the outer wall of the threaded rod 11 , and a clamping groove 1003 is provided on the top of the connecting groove 1002 . The inner wall of the clamping groove 1003 and the outer wall of the internal threaded sleeve 12 are rotatably interlaced and connected.

[0033] Furthermore, by rotating the internally threaded sleeve 12 with threads provided inside the top of the threaded rod 11, the threaded sleeve 12 is moved vertically along the threaded rod 11, and the sealing cover 10 is connected and fixed in position by inserting the internally threaded sleeve 12 into the clamping groove 1003 provided on the connecting groove 1002. It should be noted that the diameter of the internally threaded sleeve 12 is larger than the diameter of the connecting groove 1002, and the diameter of the clamping groove 1003 is larger than the diameter of the internally threaded sleeve 12, thereby ensuring the fixing stability of the sealing cover 10.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gear transmission structure for a reducer, comprising a support base (1) and a cover (2) fixedly connected to the top of the support base (1), characterized in that: A transmission assembly for reducing gear transmission is arranged on one side of the support base (1) and the cover body (2); a plurality of oil injection structures for adding lubricating oil are arranged on the top of the cover body (2); the oil injection structure comprises an oil injection pipe (8); a sealing structure for sealing the oil injection pipe (8) is arranged on the top of the oil injection pipe (8); and a fixing structure for locking the sealing structure is arranged on one side of the sealing structure; The transmission assembly comprises a first rotating gear column (3), the outer wall of the first rotating gear column (3) is meshed with a first helical gear (6), and the middle part of the first helical gear (6) is interlaced with a second rotating gear column (4); The outer wall of the second rotating gear column (4) is meshed with a second helical gear (7), the middle of the second helical gear (7) is interpenetratingly connected with a rotating shaft (5), and the inner cavity of the support base (1) is rotatably interpenetratingly connected with the outer wall of the first rotating gear column (3), the outer wall of the second rotating gear column (4) and the outer wall of the rotating shaft (5); The sealing structure comprises a fixed block (9), the bottom end of the fixed block (9) is fixedly connected to the top end of the cover body (2), the outer wall of the oil filling pipe (8) is respectively connected to the top end of the cover body (2) and the top end of the fixed block (9), and the top end of the fixed block (9) is hingedly connected to a sealing cover (10) for sealing the oil filling pipe (8); The fixing structure comprises a threaded rod (11), one side of the fixing block (9) is provided with a groove (901), the bottom end of the groove (901) and the bottom end of the threaded rod (11) are hingedly connected, and the sealing cover (10) is provided with a connecting groove (1002) on a side close to the groove (901), and the inner wall of the connecting groove (1002) and the outer wall of the threaded rod (11) are slidably interlaced and connected.

2. The gear transmission structure for a reducer according to claim 1, characterized in that: An elastic cone block (1001) is fixedly connected to the middle of the bottom end of the sealing cover (10), and the outer wall of the elastic cone block (1001) is slidably interlaced with the top end of the oil filling pipe (8).

3. The gear transmission structure for a reducer according to claim 1, characterized in that: An internal threaded sleeve (12) is threadedly sleeved at the top end of the outer wall of the threaded rod (11), a clamping groove (1003) is opened at the top end of the connecting groove (1002), and the inner wall of the clamping groove (1003) and the outer wall of the internal threaded sleeve (12) are rotatably interlaced and connected.

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