Exhaust and oil leakage prevention device for agricultural speed reducer

Abstract

The exhaust and oil leakage prevention device comprises a bolt valve body, exhaust holes are formed in the bolt valve body and comprise the radial exhaust hole and the axial exhaust hole, the axial exhaust hole comprises the first-section exhaust hole and the second-section exhaust hole, the second-section exhaust hole is communicated with the radial direction, the diameter of the first-section exhaust hole is larger than that of the second-section exhaust hole, and the diameter of the second-section exhaust hole is larger than that of the first-section exhaust hole. A suspension ball is arranged in the first-section exhaust hole, it is guaranteed that the suspension ball moves upwards to the communicating position of the first-section exhaust hole and the second-section exhaust hole when being pushed, the second-section exhaust hole is blocked, a blocking block is arranged at the air inlet end of the axial exhaust hole, a through hole is formed in the blocking block, and the blocking block is used for blocking the suspension ball in the first-section exhaust hole. According to the exhaust valve, the axial exhaust hole is machined into the two exhaust hole sections with the different hole diameters according to the one-way valve principle, the suspension ball is arranged in the large-hole-diameter exhaust hole section, when lubricating oil moves upwards due to the capillary effect, the suspension ball floats to block the small-hole-diameter exhaust hole section, and the problems of oil seepage and oil leakage of the exhaust valve of the speed reducer of the agricultural machine are solved with extremely low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of exhaust valves, and is an improvement on the exhaust valve of an agricultural machinery reducer. Specifically, it relates to an exhaust oil leakage prevention device for an agricultural reducer. Background Art

[0002] Currently, the structure of the exhaust valve of an agricultural machinery reducer is such that small holes that communicate with each other are drilled axially and radially through the bolt head to form an exhaust hole, which is installed on the end cover of the reducer, as Figure 6 shown; its function is that when the reducer is working, the heat generated causes the air inside the reducer to expand thermally, and the thermally expanded air is discharged through the small holes that communicate axially and radially through the bolt.

[0003] The reducer uses splash lubrication, and the splashed lubricating oil also splashes to the bottom of the exhaust hole of the exhaust valve. The lubricating oil has a certain viscosity, and the lubricating oil adheres to the periphery of the intake port at the bottom of the exhaust hole. Some lubricating oil directly splashes into the intake port of the exhaust hole. When the agricultural machinery is operating in the bumpy fields, the lubricating oil surges and hits the exhaust valve, causing the lubricating oil in the intake port of the exhaust hole to gradually move upward. At the same time, a large amount of heat is generated by the high-speed rotation and friction of the reducer gears, and the gas in the gearbox expands thermally. Since the exhaust hole of the exhaust valve of the agricultural machinery reducer forms a capillary, under the domination of the capillary effect, a section of lubricating oil and a section of air gradually move upward in the small hole until it seeps out from the radial small hole at the bolt head. Summary of the Invention

[0004] In view of the above problems, the present invention proposes an exhaust oil leakage prevention device for an agricultural reducer, which improves the exhaust valve of an agricultural machinery reducer by using the principle of a one-way valve to solve the problems of oil leakage and seepage of the exhaust valve.

[0005] To achieve the above objectives, the following technical solutions are adopted: An exhaust oil leakage prevention device for an agricultural reducer includes a bolt valve body. An exhaust hole is provided inside the bolt valve body. The exhaust hole includes a radial exhaust hole and an axial exhaust hole. Among them, the port of the radial exhaust hole is the exhaust end, and the port of the axial exhaust hole is the intake end.

[0006] The axial exhaust hole includes a first exhaust hole and a second exhaust hole. The second exhaust hole communicates with the radial direction. The diameter of the first exhaust hole is larger than the diameter of the second exhaust hole.

[0007] A floating ball is arranged inside the first exhaust hole to ensure that when the floating ball is subjected to buoyancy, it moves upward to the connection between the first exhaust hole and the second exhaust hole and blocks the second exhaust hole.

[0008] A blocking block is provided at the intake end of the axial exhaust hole. A through hole is provided on the blocking block. The blocking block is used to block the floating ball inside the first exhaust hole.

[0009] Furthermore, the plug used is a screwed plug. Threads are machined at the air inlet end of the axial exhaust hole, and the screwed plug is threadedly connected to the air inlet end.

[0010] Furthermore, the number of through holes provided in the plug block is two.

[0011] Furthermore, the difference between the aperture of the first-stage exhaust hole and the diameter of the floating ball is 4 - 6 mm.

[0012] Furthermore, a dust-proof cover is provided on the top of the bolt valve body. The dust-proof cover covers the bolt head of the bolt valve body, and a gap is reserved between the exhaust end of the radial exhaust hole of the exhaust hole and the dust-proof cover.

[0013] Furthermore, the dust-proof cover includes a circular groove-shaped cover body and an air filter cotton. The circular groove-shaped cover body includes a cover top and a cover edge. A circle of air filter cotton is provided inside the cover edge. The lower end face of the air filter cotton is higher than the end face of the cover edge, and the cover top is arranged on the top of the bolt head of the bolt valve body.

[0014] Furthermore, the lower end face of the air filter cotton and the lower end face of the bolt head of the bolt valve body are on the same horizontal line.

[0015] Furthermore, the circular groove-shaped cover body is made of iron or steel.

[0016] Furthermore, the cover top of the circular groove-shaped cover body is connected to the top of the bolt head of the bolt valve body through a magnet.

[0017] Furthermore, there is a gap between the exhaust end of the radial exhaust hole of the exhaust hole and the air filter cotton, and the gap is 5 - 8 mm.

[0018] Advantages of the present invention: By using the one-way valve principle, the axial exhaust hole is processed into two exhaust holes with different apertures. A floating ball is arranged in the large-aperture exhaust hole section. When the lubricating oil moves upward due to capillary action, the floating ball is lifted to block the small-aperture exhaust hole section, avoiding the leakage of the lubricating oil along the exhaust hole. The structure of the present invention is simple and easy to process, and solves the problems of oil leakage and seepage of the exhaust valve of agricultural machinery reducers at extremely low cost. At the same time, by using the magnetic attraction principle, a dust-proof cover is provided on the top of the bolt valve body to prevent dust from entering the reducer, increasing the service life of the lubricating oil and the reducer, and being convenient for installation and maintenance. Description of the Drawings

[0019] Figure 1 It is a schematic cross-sectional view of Embodiment 1;

[0020] Figure 2 It is a schematic cross-sectional view of Embodiment 2;

[0021] Figure 3 It is a schematic cross-sectional view of the bolt valve body;

[0022] Figure 4 It is a schematic cross-sectional view of the bolt head part of the bolt valve body;

[0023] Figure 5 It is a schematic cross-sectional view of a pipe plug;

[0024] Figure 6 It is a schematic structural view of an exhaust valve of an agricultural machinery reducer.

[0025] As shown in the figure: 1. Bolt valve body; 2. Radial exhaust hole; 3. Axial exhaust hole; 4. Suspension ball; 5. Plug block; 6. Dust-proof cover; 7. Magnet; 60. Round groove type cover body; 61. Air filter cotton; 100. Bolt head; 101. Bolt rod; 200. Exhaust end; 300. Intake end; 301. First-stage exhaust hole; 302. Second-stage exhaust hole; 500. Through hole; 600. Cover top; 601. Cover edge. Specific implementation mode

[0026] Example 1

[0027] The following is further described in conjunction with the accompanying drawings. Figure 1 It is a schematic view of this example. As shown in the figure, an exhaust and anti-oil-leakage device for an agricultural reducer in this example includes a bolt valve body. An exhaust hole is provided in the bolt valve body 1. The exhaust hole includes a radial exhaust hole 2 and an axial exhaust hole 3. Among them, the port of the radial exhaust hole 2 is the exhaust end 200, and the port of the axial exhaust hole 3 is the intake end 300.

[0028] The axial exhaust hole 3 is divided into a first-stage exhaust hole 301 and a second-stage exhaust hole 302. The aperture of the first-stage exhaust hole 301 is larger than that of the second-stage exhaust hole 302. The second-stage exhaust hole 302 is communicated with the radial exhaust hole 2. A suspension ball 4 is arranged in the first-stage exhaust hole 301 to ensure that the suspension ball 4 moves upward to the communication part of the first-stage exhaust hole 301 and the second-stage exhaust hole 302 when receiving buoyancy and blocks the second-stage exhaust hole 302. The difference between the aperture of the first-stage exhaust hole 301 and the diameter of the suspension ball 4 is 4 - 6 mm.

[0029] A plug block 5 is provided at the intake end 300 of the axial exhaust hole 3. The plug is a pipe plug. Threads are processed at the intake end of the axial exhaust hole 3. The pipe plug is threadedly connected with the intake end 300. Two through holes 500 are provided on the plug block 5. The apertures of the through holes 500 are both smaller than the diameter of the suspension ball 4. The plug block 5 blocks the suspension ball 4 in the first-stage exhaust hole 301 and ensures ventilation at the same time.

[0030] Example 2

[0031] Such as Figure 2As shown in the figure, based on the structure of Embodiment 1, a dust-proof cover 6 is provided at the top of the bolt valve body 1 in this example. The dust-proof cover 6 includes a circular groove-shaped cover body 60 and an air filter cotton 61. The circular groove-shaped cover body 60 is made of iron or steel, and includes a cover top 600 and a cover edge 601. A circle of air filter cotton 61 is provided inside the cover edge 601. The lower end face of the air filter cotton 61 is higher than the end face of the cover edge 601. The lower end face of the air filter cotton 61 is on the same horizontal line as the lower end face of the bolt head 100 of the bolt valve body 1. The cover top 600 is arranged on the top of the bolt head 100 of the bolt valve body 1, so that the dust-proof cover 6 covers the bolt head 100 of the bolt valve body 1. There is a gap between the exhaust end 200 of the radial exhaust hole 2 and the air filter cotton 61, and the gap is 5-8 mm. The cover top 600 is connected to the top of the bolt head 100 of the bolt valve body 1 through a magnet 7.

[0032] Embodiment 1 and Embodiment 2 improve the original exhaust valve structure. The specific method is as follows: S1. As Figure 3-4 shown, use a bolt with the same thread as the original exhaust valve as the main body of the bolt valve body 1. Drill a small hole through the center of the hexagonal plane of the bolt head 100 to process the radial exhaust hole 2. Drill a large hole and tap the thread at a section of the front end of the bolt rod 101 in the axial direction to process a section of exhaust hole 301 and the thread for connecting with the plug 5. The large hole can eliminate the capillary. Drill a small hole at the rear end to communicate with the radial small hole of the bolt head 100 to process the second-stage exhaust hole 302;

[0033] S2. As Figure 5 shown, make a plug block 5, use a bolt with the same thread as the tapped thread in the above step as the plug, drill two small holes axially to process the through hole 500;

[0034] S3. Place a floating ball 4 in a section of the exhaust hole. The floating ball 4 can be a hollow plastic ball. The function of the floating ball 4 is: the floating ball 4 is floated by the splashing of the reducer gear meshing and the surge of the lubricating oil. The floated floating ball 4 seals the second-stage exhaust hole 302, acting as a one-way valve to prevent the lubricating oil from entering the second-stage exhaust hole 302. At the same time, install the plug 5 and tighten the plug with two through holes 500. The function of the plug with two through holes is: the first is to prevent the floating ball from falling, the second is for ventilation, and the third is to tighten the plug through the two holes;

[0035] S4. Make the dust-proof cover 6. First, process the circular groove-shaped cover body 60, and then paste a circle of air filter cotton 61 along the inside of the cover edge 601. The lower end face of the air filter cotton 61 should be higher than the end face of the cover edge 601, and the lower end face of the air filter cotton 61 is kept on the same horizontal line as the lower end face of the bolt head 100 of the bolt valve body 1. Install a magnet 7 inside the cover top 600;

[0036] S5. Install the bolt valve body 1 made in S3 on the reducer, adsorb the dust cover 6 on the bolt head 100 of the bolt valve body 1 through the magnet 7. The dust cover 6 covers the bolt head 100 of the bolt valve body 1. There is a certain gap between the edge of the dust cover 6 and the surface of the reducer. The lower end surface of the air filter cotton 61 fits on the surface of the reducer. After the agricultural machinery stops working, the cooling air of the reducer shrinks, and the outside air enters to prevent dust from entering the reducer.

[0037] The present invention is not limited to the above embodiments. Any equivalent concept or change within the technical scope disclosed in the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust anti-oil leakage device for an agricultural speed reducer, comprising a bolt valve body (1), an exhaust hole is arranged in the bolt valve body (1), and the exhaust hole includes a radial exhaust hole (2) and an axial exhaust hole (3), wherein, The port of the radial exhaust hole (2) is the exhaust end (200), and the port of the axial exhaust hole (3) is the intake end (300), characterized in that the axial exhaust hole (3) includes a first-stage exhaust hole (301) and a second-stage exhaust hole (302), the second-stage exhaust hole (302) communicates with the radial exhaust hole (2), and the aperture of the first-stage exhaust hole (301) is larger than that of the second-stage exhaust hole (302). A floating ball (4) is arranged in the first-stage exhaust hole (301) to ensure that when the floating ball (4) is subjected to buoyancy, it moves upward to the communication position between the first-stage exhaust hole (301) and the second-stage exhaust hole (302) and blocks the second-stage exhaust hole (302). A plug block (5) is provided at the intake end (300) of the axial exhaust hole (3), and a through hole (500) is provided on the plug block (5). The plug block (5) is used to block the floating ball (4) in the first-stage exhaust hole (301).

2. The exhaust oil leakage prevention device for the agricultural speed reducer according to claim 1, characterized in that, The plug block (5) is a screwed plug. The intake end (300) of the axial exhaust hole (3) is processed with threads, and the screwed plug is threadedly connected to the intake end (300).

3. The exhaust oil leakage prevention device for the agricultural speed reducer according to claim 2, characterized in that, The number of through holes (500) provided on the plug block (5) is two.

4. The exhaust oil leakage prevention device for the agricultural speed reducer according to claim 3, characterized in that, The difference between the aperture of the first-stage exhaust hole (301) and the diameter of the floating ball (4) is 4 - 6 mm.

5. The exhaust oil leakage prevention device for the agricultural speed reducer according to any one of claims 1-4, characterized in that, A dust-proof cover (6) is provided at the top of the bolt valve body (1). The dust-proof cover (6) covers the bolt head (100) of the bolt valve body (1), and a gap is reserved between the exhaust end (200) of the radial exhaust hole (2) of the exhaust hole and the dust-proof cover (6).

6. The exhaust oil leakage prevention device for the agricultural speed reducer according to claim 5, characterized in that, The dust-proof cover (6) includes a circular groove-shaped cover body (60) and an air filter cotton (61). The circular groove-shaped cover body (60) includes a cover top (600) and a cover edge (601). An air filter cotton (61) is arranged in a circle on the inner side of the cover edge (601). The lower end surface of the air filter cotton (61) is higher than the end surface of the cover edge (601), and the cover top (600) is arranged on the top of the bolt head (100) of the bolt valve body (1).

7. The exhaust anti-oil leakage device for agricultural speed reducers according to claim 6, characterized in that, The lower end surface of the air filter cotton (61) is on the same horizontal line as the lower end surface of the bolt head (100) of the bolt valve body (1).

8. The exhaust oil leakage prevention device for the agricultural speed reducer according to claim 7, characterized in that, The circular groove-shaped cover body (60) is made of iron or steel.

9. The exhaust anti-oil leakage device for the agricultural speed reducer according to claim 8, characterized in that, The cover top (600) of the circular groove-shaped cover body (60) is connected to the top of the bolt head (100) of the bolt valve body (1) through a magnet (7).

10. The exhaust anti-oil leakage device for the agricultural speed reducer according to claim 9, characterized in that, There is a gap between the exhaust end (200) of the radial exhaust hole (2) of the exhaust hole and the air filter cotton (61), and the gap is 5 - 8 mm.

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