Rear shell of gearbox

Abstract

The utility model provides a gearbox rear shell which comprises a machine shell, an installation hole used for installing a transmission is formed in the rear end of the machine shell, an installation frame is arranged at the upper end of the inner side of the machine shell, the installation frame is connected with the machine shell through threads, an oil distribution pipe is arranged on the installation frame, an oil inlet hole is further formed in the upper end of the inner side of the machine shell, and an oil outlet hole is further formed in the lower end of the inner side of the machine shell. An oil outlet hole is formed in the inner wall of the machine shell, an oil inlet hole is formed in the inner wall of the machine shell, a circulating oil pump is further arranged on the outer side of the machine shell and used for collecting oil flowing out of the oil outlet hole and conveying the oil to the oil inlet hole, the oil inlet hole communicates with an oil distribution pipe, and a magnetic block assembly is arranged in the oil distribution pipe. And the magnetic block assembly is arranged in the oil distribution pipe, and iron powder in the lubricating oil is adsorbed, so that the iron powder is intensively adsorbed on the magnetic block assembly, the influence of the iron powder on the transmission is reduced, and the replacement interval time of the lubricating oil is prolonged.

Description

Technical Field

[0001] The utility model relates to a gearbox, in particular to a gearbox rear housing. Background Art

[0002] The transmission is a mechanism used to change the engine speed and torque. It is composed of multiple sliding gears, synchronizers and other parts. It is usually installed in the transmission body. The transmission body is a shell that carries the transmission. It is usually cast and then fine-machined and assembled. Usually the transmission body will be filled with lubricating oil after assembly. The oil-immersed transmission will make the sliding gear half-immersed in the lubricating oil, and the oil-injected transmission will continuously spray the lubricating oil onto the sliding gear to reduce the friction between the gears and play a role in lubrication and cleaning.

[0003] The existing problem is that after long-term use, the transmission will still have wear problems and fine iron powder impurities will appear. The iron powder impurities will flow with the lubricating oil and affect the transmission. The existing solution is to replace the lubricating oil in the transmission and disassemble the transmission to clean its interior. However, frequent disassembly and cleaning is more troublesome and requires high labor and time costs. At the same time, disassembling the transmission will affect its overall sealing and have a certain impact on the sliding gear. Utility Model Content

[0004] In view of this, the utility model aims to provide a gearbox rear housing, which has the function of absorbing iron powder.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a rear housing of a gearbox, including a casing, a mounting hole for mounting the transmission is provided at the rear end of the casing, a mounting bracket is provided at the upper end of the inner side of the casing, the mounting bracket is connected to the casing by threads, an oil distribution pipe is provided on the mounting bracket, an oil inlet hole is also provided at the upper end of the inner side of the casing, an oil outlet hole is also provided at the lower end of the inner side of the casing, a circulating oil pump is also provided on the outer side of the casing, the circulating oil pump is used to collect the oil flowing out of the oil outlet hole and transport it to the oil inlet hole, the oil inlet hole is connected to the oil distribution pipe, a magnetic block assembly is provided in the oil distribution pipe, and the magnetic block assembly is used to adsorb iron powder in the lubricating oil.

[0006] Through the above-mentioned technical means, an oil distribution pipe is arranged on the inner wall of the casing, and the lubricating oil is sent into the oil distribution pipe through a circulating oil pump, so that the oil enters the oil distribution pipe before spraying. A magnetic block assembly is arranged in the oil distribution pipe, and the iron powder in the lubricating oil is adsorbed, so that the iron powder is concentrated on the magnetic block assembly, thereby reducing the influence of the iron powder on the transmission, increasing the interval time for replacing the lubricating oil, and reducing the cost of replacing the lubricating oil.

[0007] Preferably, a flow channel 1 is opened on the inner side of the oil distribution pipe, an inlet pipe is provided at the side end of the oil distribution pipe, the inlet pipe is connected with the oil inlet hole, a flow channel 2 is opened in the inlet pipe, the flow channel 2 is connected with the flow channel 1, and a plurality of oil injection ports are also opened at the bottom of the oil distribution pipe.

[0008] Through the above technical means, the lubricating oil enters the oil distribution pipe from the oil inlet hole through the connection between flow channel 1 and flow channel 2, and a plurality of oil injection ports are arranged at the bottom of the oil distribution pipe, so that the lubricating oil is evenly sprayed on the gear.

[0009] Preferably, the magnetic block assembly includes a plurality of magnetic blocks and connecting rods connecting the magnetic blocks, the magnetic blocks are placed in the oil distribution pipe, a bottom hole is also opened on the outer side of the casing, and the oil distribution pipe is connected to the bottom hole.

[0010] Through the above technical means, the magnetic block is connected by a connecting rod and a bottom hole is opened, so that the magnetic block is placed in the oil distribution pipe to absorb the iron powder in the lubricating oil. The magnetic block can be easily taken out through the bottom hole for cleaning, thereby reducing the cleaning cost.

[0011] Preferably, a through hole is provided on the inner side of the magnetic block, the through hole is connected to the oil injection port, a positioning block is provided on the inner wall of the flow channel, a positioning slot is provided in the middle of the positioning block, and the magnetic block is slidably arranged in the positioning slot.

[0012] Through the above technical means, a through hole is opened in the magnetic block, so that when the lubricating oil passes through the through hole, the iron powder is adsorbed on the inner wall of the through hole, and the sliding cooperation between the positioning block and the magnetic block facilitates the connection between the through hole and the oil injection port.

[0013] Preferably, a sealing cover is provided at the tail of the connecting rod, the sealing cover cooperates with the bottom hole to seal, and the connecting rod and the magnetic block are both magnetic.

[0014] Through the above technical means, the sealing cover and the bottom hole are matched to prevent the leakage of lubricating oil, and the connecting rod and the magnetic block are both magnetic to further increase the iron powder adsorption capacity.

[0015] Preferably, the magnetic block assembly includes a magnetic filter, which is arranged between the oil injection port and the inlet pipe, and the magnetic filter is fixedly connected to an inner wall of the flow channel. A bottom hole is also provided on the outside of the casing, and a sealing cover is also provided at the bottom hole, and the sealing cover cooperates with the bottom hole to seal.

[0016] Through the above-mentioned technical means, by setting the magnetic filter between the oil injection port and the inlet pipe, the lubricating oil passes through the magnetic filter before entering the oil injection port, and the iron powder is adsorbed on the magnetic filter to increase the adsorption capacity. By opening a bottom hole, the magnetic filter is easily cleaned, and by setting a sealing cover at the bottom hole, the sealing of the casing is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of embodiment 1;

[0018] Figure 2 is a schematic diagram of the structure of the casing;

[0019] Figure 3 It is a structural schematic diagram of the oil distribution pipe in Example 1;

[0020] Figure 4 It is a partial cross-sectional view of the first embodiment;

[0021] Figure 5 It is a partial cross-sectional view of the second embodiment.

[0022] Figure numerals: 1, casing; 2, mounting hole; 3, mounting frame; 4, oil distribution pipe; 5, oil inlet hole; 6, oil outlet hole; 7, flow channel one; 8, inlet pipe; 9, flow channel two; 10, oil injection port; 11, magnetic block assembly; 12, magnetic block; 13, connecting rod; 14, bottom hole; 15, sealing cover; 16, rubber sealing gasket; 17, through hole; 18, positioning block; 19, positioning slide groove; 20, magnetic filter. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp. Embodiment 1:

[0024] A gearbox rear housing comprises a casing 1, a mounting hole 2 for mounting a transmission is arranged at the rear end of the casing 1, a mounting frame 3 is arranged at the inner upper end of the casing 1, the mounting frame 3 is connected to the casing 1 by threads, an oil distribution pipe 4 is arranged on the mounting frame 3, the oil distribution pipe 4 passes through the central hole of the mounting frame 3, an oil inlet hole 5 is arranged at the inner upper end of the casing 1, an oil outlet hole 6 is arranged at the inner lower end of the casing 1, and lubricating oil flows out from the oil outlet hole 6, a circulating oil pump is also arranged on the outer side of the casing 1, and the circulating oil pump is used to collect the oil flowing out of the oil outlet hole 6 and transport it to the oil inlet hole 5, thereby forming a circulation system. A flow channel 7 is provided on the inner side of the oil distribution pipe 4, an inlet pipe 8 is provided on the side end of the oil distribution pipe 4, the inlet pipe 8 is arranged at a right angle to the oil distribution pipe 4, a flow channel 2 9 is provided in the inlet pipe 8, the flow channel 2 9 is connected with the flow channel 1 7, a plurality of oil injection ports 10 are provided at the bottom of the oil distribution pipe 4, after the casing 1 is assembled, the oil injection port 10 is aligned with the gear meshing position, a magnetic block assembly 11 is provided in the oil distribution pipe 4, the magnetic block assembly 11 is used to absorb iron powder in the lubricating oil, reduce the influence of the iron powder on the transmission, increase the replacement interval of the lubricating oil, and reduce the cost of replacing the lubricating oil.

[0025] The magnetic block assembly 11 includes a plurality of magnetic blocks 12 and a connecting rod 13 connecting the magnetic blocks 12. The magnetic block 12 is placed in the oil distribution pipe 4. A bottom hole 14 is also opened on the outside of the casing 1. The oil distribution pipe 4 is connected to the bottom hole 14. A sealing cover 15 is provided at the tail of the connecting rod 13. The sealing cover 15 and the bottom hole 14 are sealed together. The sealing cover 15 and the casing 1 are fixed by screws. A rubber sealing gasket 16 is provided at the bottom of the sealing cover 15. Both the connecting rod 13 and the magnetic block 12 are magnetic. When the magnetic block 12 needs to be cleaned, the magnetic block 12 and the connecting rod 13 can be pulled out by disassembling the sealing cover 15, which is convenient for cleaning the magnetic block 12 and the connecting rod 13.

[0026] A through hole 17 is also provided on the inner side of the magnetic block 12, and the through hole 17 is connected with the oil injection port 10. A positioning block 18 is also provided on the inner wall of the flow channel 17, and a positioning slot 19 is provided in the middle of the positioning block 18. The magnetic block 12 is slidably arranged in the positioning slot 19. When installing the magnetic block 12, the magnetic block 12 is inserted into the positioning slot 19 and the sealing cover 15 is pushed inward to connect the through hole 17 with the oil injection port, so that when the lubricating oil passes through the through hole 17, the iron powder is adsorbed on the inner wall of the through hole 17, thereby increasing the adsorption probability of the iron powder. Embodiment 2:

[0027] The difference between the second embodiment and the first embodiment is that the magnetic block assembly 11 includes a magnetic filter 20, which is arranged between the oil injection port 10 and the inlet pipe 8, and the magnetic filter 20 is fixedly connected to the inner wall of the flow channel 7. When the lubricating oil enters the oil distribution pipe 4 from the inlet pipe 8, the iron powder in the lubricating oil is directly adsorbed on the magnetic filter 20. A bottom hole 14 is also provided on the outside of the casing 1, and a sealing cover 15 is also provided at the bottom hole 14. The sealing cover 15 is fixed to the casing 1 by screws, and a sealing rubber pad is provided on the bottom surface of the sealing cover 15. Compared with the magnetic block 12, the adsorption effect through the magnetic filter 20 is better, but it is easy to be blocked, and the cleaning interval time is shorter than that of the magnetic block 12. It can be selected according to different application environments. When cleaning, after removing the sealing cover 15, the magnetic filter 20 can be directly cleaned by inserting the suction head of the vacuum cleaner into the oil distribution pipe 4 to exhaust the magnetic filter 20.

[0028] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A transmission rear housing, comprising a housing (1), wherein a mounting hole (2) for mounting a transmission is provided at a rear end of the housing (1), wherein: The upper inner end of the casing (1) is provided with a mounting frame (3), the mounting frame (3) is connected to the casing (1) by threads, an oil distribution pipe (4) is provided on the mounting frame (3), an oil inlet hole (5) is also provided at the upper inner end of the casing (1), an oil outlet hole (6) is also provided at the lower inner end of the casing (1), a circulating oil pump is also provided on the outer side of the casing (1), the circulating oil pump is used to collect oil flowing out of the oil outlet hole (6) and transport it to the oil inlet hole (5), the oil inlet hole (5) is connected to the oil distribution pipe (4), a magnetic block assembly (11) is provided in the oil distribution pipe (4), and the magnetic block assembly (11) is used to absorb iron powder in the lubricating oil.

2. The transmission rear housing according to claim 1, characterized in that: A flow channel 1 (7) is provided inside the oil distribution pipe (4), a side end of the oil distribution pipe (4) is provided with an inlet pipe (8), the inlet pipe (8) is connected to the oil inlet hole (5), a flow channel 2 (9) is provided inside the inlet pipe (8), the flow channel 2 (9) is connected to the flow channel 1 (7), and a plurality of oil injection ports (10) are also provided at the bottom of the oil distribution pipe (4).

3. The rear housing of a gearbox according to claim 2, characterized in that: The magnetic block assembly (11) comprises a plurality of magnetic blocks (12) and connecting rods (13) connecting the magnetic blocks (12); the magnetic blocks (12) are placed in an oil distribution pipe (4); a bottom hole (14) is also provided on the outside of the casing (1); and the oil distribution pipe (4) is connected to the bottom hole (14).

4. The rear housing of a gearbox according to claim 3, characterized in that: A through hole (17) is also provided on the inner side of the magnetic block (12), and the through hole (17) is communicated with the oil injection port (10). A positioning block (18) is also provided on the inner wall of the flow channel 1 (7), and a positioning groove (19) is provided in the middle of the positioning block (18), and the magnetic block (12) is slidably arranged in the positioning groove (19).

5. The rear housing of a gearbox according to claim 3, characterized in that: A sealing cover (15) is provided at the tail of the connecting rod (13), and the sealing cover (15) cooperates with the bottom hole (14) to seal, and both the connecting rod (13) and the magnetic block (12) are magnetic.

6. The rear housing of a gearbox according to claim 2, characterized in that: The magnetic block assembly (11) comprises a magnetic filter (20), the magnetic filter (20) being arranged between the oil injection port (10) and the inlet pipe (8), the magnetic filter (20) being fixedly connected to the inner wall of the flow channel 1 (7), the outer side of the housing (1) being further provided with a bottom hole (14), the bottom hole (14) being further provided with a sealing cover (15), the sealing cover (15) cooperating with the bottom hole (14) to seal.

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