Mounting structure for output shaft seat of speed reducer

Abstract

The utility model relates to the technical field of speed reducers, and discloses a speed reducer output shaft seat mounting structure which comprises a speed reducer body and a speed reducer shaft integrated with the speed reducer body, an electric cabinet is arranged on the outer surface of the speed reducer body, and a connecting cover is fixedly mounted at one end, close to the speed reducer shaft, of the speed reducer body. A limiting groove is formed in the other face, away from the speed reducer shaft, of the connecting cover, the oil seal assembly is arranged on the other face, away from the speed reducer shaft, of the connecting cover in a penetrating mode, and the other end, away from the speed reducer shaft, of the connecting cover is fixedly provided with the oil seal assembly through a positioning bolt. According to the speed reducer output shaft seat installation structure, the multiple sets of positioning bolts provide enough fixing force, it is ensured that the oil seal assembly and the connecting cover are firmly connected, looseness or displacement is prevented in the operation process, the shaft seat body and other equipment can be accurately installed conveniently through the connecting block, the installation seat and the positioning holes, the speed reducer shaft and the shaft seat body are firmly connected through interference fit, and effective transmission of power is ensured; and positioning bolt connection is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a speed reducer output shaft mounting structure. Background Technology

[0002] In modern mechanical applications, speed reducers are often used as power components. A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine, and plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator.

[0003] Chinese Utility Model Patent Publication No. CN 221145237 U discloses a reducer with an output shaft seat. This reducer, through the shaft seat assembly and the output bearing seat, allows the reducer to operate normally under large radial loads, and increases the radial load by 120% compared to a standard reducer. This significantly reduces the occurrence of output shaft breakage and improves the safety of equipment operation. However, although the reducer with an output shaft seat can reduce its radial load, it is not convenient to connect the reducer shaft and the shaft seat body, and it is easy to make the connection between the two weak, thus affecting its normal operation. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a speed reducer output shaft mounting structure, which can effectively solve the problem that although the radial load can be reduced in the prior art, it is not convenient to connect the speed reducer shaft and the shaft seat body, and at the same time, it is easy to make the connection between the two poor, thus affecting its normal operation.

[0005] The technical solution adopted by this utility model is: a speed reducer output shaft mounting structure, including a speed reducer body and a speed reducer shaft integrally formed with the speed reducer body. An electrical control box is provided on the outer surface of the speed reducer body. A connecting cover is fixedly installed on one end of the speed reducer body near the speed reducer shaft. A limit groove is opened on the other side of the connecting cover away from the speed reducer shaft. A positioning bolt is provided through the other side of the connecting cover away from the speed reducer shaft. An oil seal assembly is fixedly installed on the other end of the connecting cover away from the speed reducer shaft by the positioning bolt. An oil filling port is provided on the outer surface of the oil seal assembly. A shaft seat body integrally formed with the oil seal assembly is fixedly installed on the other end of the oil seal assembly away from the speed reducer body. Mounting grooves are opened on the inner surfaces of the oil seal assembly and the shaft seat body.

[0006] Preferably, the oil seal assembly includes an oil seal housing, and the inner surface of the oil seal housing has a first cavity, a second cavity, and an oil injection cavity, and the first cavity, the second cavity, the oil injection cavity, and the oil injection port are interconnected.

[0007] With the above technical solution, after the oil seal assembly is installed, lubricating oil is injected into the oil filling chamber through the oil filling port. The lubricating oil will flow into the first and second chambers through the internal channels. The design of multiple interconnected chambers can store more lubricating oil, ensuring that the contact parts between the reducer shaft and the oil seal assembly are continuously lubricated, reducing friction and wear, and extending the service life of the equipment.

[0008] Preferably, the first cavity and the second cavity have an annular cross-section, and the diameter of the first cavity is smaller than the diameter of the second cavity.

[0009] The above technical solution utilizes an annular cavity structure to ensure even distribution of lubricating oil around the reducer shaft, providing better lubrication. The design of cavities with different diameters allows for the storage of varying amounts of lubricating oil according to actual needs. Furthermore, the flow of lubricating oil creates a pressure differential, promoting circulation and further enhancing lubrication efficiency.

[0010] Preferably, a sealing ring is provided on the inner surface of the limiting groove, and three identical limiting grooves and sealing rings are provided. The diameters of the three limiting grooves and sealing rings are distributed in a decreasing manner from the outer ring of the connecting cover to the center.

[0011] Through the above technical solution, the sealing rings are embedded into the corresponding limiting grooves, and then the connecting cover and oil seal assembly are assembled to ensure that the sealing rings fit tightly. The setting of multiple sealing rings and limiting grooves forms a multi-layer sealing structure, and the decreasing distribution design can better adapt to the cooperation between the connecting cover and the oil seal assembly, improve the reliability of the seal, and ensure the normal operation of the reducer.

[0012] Preferably, the positioning bolts are provided in four identical groups, with three identical positioning bolts in each group, and the four groups of positioning bolts penetrate the connecting cover and extend to the inner surface of the oil seal assembly.

[0013] With the above technical solution, during installation, the connecting cover and the oil seal assembly can be aligned, and then the positioning bolts can be passed through the connecting cover to achieve quick installation of the reducer body and the oil seal assembly. The setting of multiple sets of positioning bolts provides sufficient fixing force to ensure that the connection between the oil seal assembly and the connecting cover is firm and reliable, preventing loosening or displacement during the operation of the reducer, which would affect the normal operation of the equipment.

[0014] Preferably, a connecting block is fixedly installed on the outer surface of the bearing seat, and a mounting base is fixedly installed at the other end of the connecting block away from the bearing seat. A positioning hole is opened through the outer surface of the mounting base, and an anti-slip sleeve is fixedly installed at the other end of the mounting base away from the bearing seat. The anti-slip sleeve is a rubber anti-slip sleeve.

[0015] The above technical solution, with its connecting block and mounting base, facilitates the connection and installation of the shaft seat with other equipment. The positioning hole enables precise positioning and installation, while the rubber anti-slip sleeve increases friction during operation, improving safety and convenience.

[0016] Preferably, the diameter of the reducer shaft is smaller than the diameter of the mounting groove, and the reducer shaft and the mounting groove are heat-fitted and cold-fitted interference fits.

[0017] With the above technical solution, during hot installation, the shaft seat is heated to expand the mounting groove, and then the reducer shaft is quickly inserted into the mounting groove. After cooling, the mounting groove shrinks to achieve a tight fit. During cold installation, the reducer shaft is cooled to reduce its diameter, and then inserted into the mounting groove. After the temperature rises, an interference fit is achieved. The interference fit can form a firm connection between the reducer shaft and the shaft seat, ensuring effective power transmission and facilitating the connection of the positioning bolts.

[0018] Compared with the prior art, the present invention provides a gearbox output shaft mounting structure, which has the following advantages:

[0019] 1. The output shaft mounting structure of this reducer features multiple sets of locating bolts providing sufficient fixing force to ensure a secure connection between the oil seal assembly and the connecting cover, preventing loosening or displacement during operation. The connecting block, mounting base, and locating holes facilitate precise installation of the shaft housing onto other equipment. The interference fit ensures a firm connection between the reducer shaft and the shaft housing, guaranteeing effective power transmission and facilitating the connection of the locating bolts. Rubber anti-slip sleeves increase operating friction, enhancing operational safety and convenience.

[0020] 2. The output shaft mounting structure of this reducer has multiple interconnected cavities that can store more lubricating oil. The annular structure of the cavities makes lubrication more uniform, and the pressure difference formed by cavities of different diameters promotes the circulation of lubricating oil, effectively reducing friction and wear at the contact points between the reducer shaft and the oil seal assembly. Furthermore, the multi-layer sealing structure and the progressively decreasing distribution design of the sealing rings and limiting grooves improve the reliability of the seal and ensure the normal operation of the reducer. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic cross-sectional view of the present invention.

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the connecting cover and sealing ring of this utility model. Figure 1 ;

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the connecting cover and sealing ring of this utility model. Figure 2 ;

[0026] Figure 6 This is a schematic diagram showing the disassembled structure of the mounting base and anti-slip sleeve of this utility model;

[0027] Figure 7 This is a schematic diagram showing the disassembled structure of the reducer shaft and connecting cover of this utility model.

[0028] The components include: 1. Gearbox body; 2. Electrical control box; 3. Gearbox shaft; 4. Connecting cover; 5. Limiting groove; 6. Positioning bolt; 7. Sealing ring; 8. Oil seal assembly; 801. Oil seal housing; 802. First cavity; 803. Second cavity; 804. Oil filling cavity; 9. Oil filling port; 10. Shaft seat body; 11. Mounting groove; 12. Connecting block; 13. Mounting seat; 14. Positioning hole; 15. Anti-slip sleeve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: As Figure 1-7 As shown, the present invention provides a speed reducer output shaft mounting structure, including a speed reducer body 1 and a speed reducer shaft 3 integrally formed with the speed reducer body 1. An electrical control box 2 is provided on the outer surface of the speed reducer body 1. A connecting cover 4 is fixedly installed on one end of the speed reducer body 1 near the speed reducer shaft 3. A limit groove 5 is provided on the other side of the connecting cover 4 away from the speed reducer shaft 3. A positioning bolt 6 is provided through the other side of the connecting cover 4 away from the speed reducer shaft 3. An oil seal assembly 8 is fixedly installed on the other end of the connecting cover 4 away from the speed reducer shaft 3 through the positioning bolt 6. An oil filling port 9 is provided on the outer surface of the oil seal assembly 8. A shaft seat body 10 integrally formed with the oil seal assembly 8 is fixedly installed on the other end of the oil seal assembly 8 away from the speed reducer body 1. Mounting grooves 11 are provided on the inner surfaces of the oil seal assembly 8 and the shaft seat body 10.

[0031] Specifically, the oil seal assembly 8 includes an oil seal housing 801. The inner surface of the oil seal housing 801 is provided with a first cavity 802, a second cavity 803, and an oil injection cavity 804. The first cavity 802, the second cavity 803, the oil injection cavity 804, and the oil injection port 9 are interconnected. The advantage is that after the oil seal assembly 8 is installed, lubricating oil is injected into the oil injection cavity 804 through the oil injection port 9. The lubricating oil will flow into the first cavity 802 and the second cavity 803 through the internal channels. The design of multiple interconnected cavities can store more lubricating oil, ensuring that the contact parts between the reducer shaft 3 and the oil seal assembly 8 are continuously lubricated, reducing friction and wear, and extending the service life of the equipment.

[0032] Specifically, the first cavity 802 and the second cavity 803 have annular cross-sections. The diameter of the first cavity 802 is smaller than the diameter of the second cavity 803. The advantage of this is that the annular structure allows the lubricating oil to be evenly distributed around the reducer shaft 3, providing better lubrication. The different diameter cavity designs allow for the storage of different amounts of lubricating oil according to actual needs, and the pressure difference created during oil flow promotes oil circulation, further improving lubrication efficiency.

[0033] Specifically, a sealing ring 7 is provided on the inner surface of the limiting groove 5. There are three identical limiting grooves 5 and sealing rings 7. The diameters of the three limiting grooves 5 and sealing rings 7 are distributed in a decreasing manner from the outer ring of the connecting cover 4 to the center. The advantage is that the sealing rings 7 are embedded into the corresponding limiting grooves 5 respectively, and then the connecting cover 4 is assembled with the oil seal assembly 8 to ensure that the sealing rings 7 fit tightly. The setting of multiple sealing rings 7 and limiting grooves 5 forms a multi-layer sealing structure. Moreover, the decreasing distribution design can better adapt to the cooperation between the connecting cover 4 and the oil seal assembly 8, improve the reliability of the seal, and ensure the normal operation of the reducer.

[0034] Example 2: Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0035] Specifically, four sets of positioning bolts 6 are provided, with three identical bolts in each set. The four sets of positioning bolts 6 penetrate the connecting cover 4 and extend to the inner surface of the oil seal assembly 8. The advantage is that during installation, the connecting cover 4 and the oil seal assembly 8 can be aligned, and then the positioning bolts 6 can be passed through the connecting cover 4, realizing the quick installation of the reducer body 1 and the oil seal assembly 8. The setting of multiple sets of positioning bolts 6 provides sufficient fixing force to ensure that the connection between the oil seal assembly 8 and the connecting cover 4 is firm and reliable, preventing loosening or displacement during the operation of the reducer, which would affect the normal operation of the equipment.

[0036] Specifically, a connecting block 12 is fixedly installed on the outer surface of the shaft seat 10, and a mounting base 13 is fixedly installed on the other end of the connecting block 12 away from the shaft seat 10. A positioning hole 14 is opened through the outer surface of the mounting base 13, and an anti-slip sleeve 15 is fixedly installed on the other end of the mounting base 13 away from the shaft seat 10. The anti-slip sleeve 15 is a rubber anti-slip sleeve. The advantages are that the setting of the connecting block 12 and the mounting base 13 facilitates the connection and installation of the shaft seat 10 with other equipment, the positioning hole 14 can achieve precise positioning installation, and the rubber anti-slip sleeve 15 increases the friction during operation, improving the safety and convenience of operation.

[0037] Specifically, the diameter of the reducer shaft 3 is smaller than the diameter of the mounting groove 11. The reducer shaft 3 and the mounting groove 11 are both hot-fit and cold-fit interference fits. The advantage is that during hot fitting, the shaft seat 10 is heated to expand the mounting groove 11, and then the reducer shaft 3 is quickly inserted into the mounting groove 11. After cooling, the mounting groove 11 shrinks to achieve a tight fit. During cold fitting, the reducer shaft 3 is cooled to reduce its diameter, and then inserted into the mounting groove 11. After the temperature rises, an interference fit is achieved. The interference fit method can form a firm connection between the reducer shaft 3 and the shaft seat 10, ensuring effective power transmission, and also facilitating the connection of the positioning bolt 6.

[0038] Working principle: During use, the oil inlet 9 of the oil seal assembly 8 is interconnected with the oil inlet chamber 804, the first cavity 802, and the second cavity 803. Lubricating oil is injected through the oil inlet 9 and flows into the oil inlet chamber 804. Then, through the interconnected internal channels, the lubricating oil is evenly distributed to the first cavity 802 and the second cavity 803. When the reducer shaft 3 rotates, it provides lubrication to the contact area between the reducer shaft 3 and the oil seal assembly 8. Because the diameters of the first cavity 802 and the second cavity 803 are different, a pressure difference is created when the lubricating oil flows, promoting the circulation of the lubricating oil. Before assembling the connecting cover 4 with the oil seal assembly 8, the three sealing rings 7 are respectively embedded into the limiting grooves 5 with decreasing diameters. During assembly, ensure that the sealing rings 7 fit tightly, forming a multi-layered seal. The sealing structure prevents lubricating oil leakage and the intrusion of external impurities. During installation, align the connecting cover 4 with the oil seal assembly 8, and insert three of each of the four sets of positioning bolts 6 through the connecting cover 4 and screw them into the inner surface of the oil seal assembly 8 to achieve a stable connection between the two. The shaft seat 10 is connected to other equipment through the connecting block 12 and the mounting seat 13 on the outer surface. The positioning holes 14 on the mounting seat 13 are used for precise installation and positioning. When installing the reducer shaft 3, an interference fit method of hot fitting or cold fitting is adopted. Hot fitting involves heating the shaft seat 10 to expand the mounting groove 11 and then inserting it into the reducer shaft 3. After cooling, the mounting groove 11 shrinks to achieve a tight connection. Cold fitting involves cooling the reducer shaft 3 to reduce its diameter and then inserting it into the mounting groove 11. After the temperature rises, the interference fit is completed.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A speed reducer output shaft mounting structure, comprising a speed reducer body (1) and a speed reducer shaft (3) integrally formed with the speed reducer body (1), characterized in that: An electrical control box (2) is provided on the outer surface of the reducer body (1). A connecting cover (4) is fixedly installed on one end of the reducer body (1) near the reducer shaft (3). A limit groove (5) is opened on the other side of the connecting cover (4) away from the reducer shaft (3). A positioning bolt (6) is provided through the other side of the connecting cover (4) away from the reducer shaft (3). An oil seal assembly (8) is fixedly installed on the other end of the connecting cover (4) away from the reducer shaft (3) through the positioning bolt (6). An oil filling port (9) is provided on the outer surface of the oil seal assembly (8). A shaft seat body (10) with an integral structure of the oil seal assembly (8) is fixedly installed on the other end of the oil seal assembly (8) away from the reducer body (1). An installation groove (11) is opened on the inner surface of the oil seal assembly (8) and the shaft seat body (10).

2. The gear reducer output shaft mounting structure according to claim 1, characterized in that: The oil seal assembly (8) includes an oil seal housing (801), and the inner surface of the oil seal housing (801) is provided with a first cavity (802), a second cavity (803) and an oil filling cavity (804), and the first cavity (802), the second cavity (803), the oil filling cavity (804) and the oil filling port (9) are interconnected.

3. The gearbox output shaft mounting structure according to claim 2, characterized in that: The first cavity (802) and the second cavity (803) have a "ring" shaped cross-section, and the diameter of the first cavity (802) is smaller than the diameter of the second cavity (803).

4. The gear reducer output shaft mounting structure according to claim 1, characterized in that: The inner surface of the limiting groove (5) is provided with a sealing ring (7). There are three identical limiting grooves (5) and sealing rings (7). The diameters of the three limiting grooves (5) and sealing rings (7) are distributed in a decreasing manner from the outer ring of the connecting cover (4) to the center.

5. The gear reducer output shaft mounting structure according to claim 1, characterized in that: The positioning bolts (6) are provided in four identical groups, and each group of positioning bolts (6) is provided with three identical ones. The four groups of positioning bolts (6) penetrate the connecting cover (4) and extend to the inner surface of the oil seal assembly (8).

6. The gear reducer output shaft mounting structure according to claim 1, characterized in that: A connecting block (12) is fixedly installed on the outer surface of the bearing seat (10). A mounting base (13) is fixedly installed on the other end of the connecting block (12) away from the bearing seat (10). A positioning hole (14) is opened through the outer surface of the mounting base (13). An anti-slip sleeve (15) is fixedly installed on the other end of the mounting base (13) away from the bearing seat (10). The anti-slip sleeve (15) is a rubber anti-slip sleeve.

7. The gear reducer output shaft mounting structure according to claim 1, characterized in that: The diameter of the reducer shaft (3) is smaller than the diameter of the mounting groove (11), and the reducer shaft (3) and the mounting groove (11) are hot-fit and cold-fit interference fits.

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