Exhaust and oil leakage prevention device for agricultural speed reducer

Abstract

The utility model relates to an agricultural speed reducer exhaust oil leakage prevention device which comprises a bolt valve body, exhaust holes are formed in the bolt valve body, the exhaust holes comprise a radial exhaust hole and an axial exhaust hole, the axial exhaust hole comprises a first-section exhaust hole and a 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 first-section exhaust hole is larger than that of the second-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 different hole diameters according to the one-way valve principle, the suspension ball is arranged in the exhaust hole section with the large hole diameter, when lubricating oil moves upwards due to the capillary effect, the suspension ball floats to block the exhaust hole section with the small hole diameter, 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 utility model relates to exhaust valve technical field, is to the improvement of the exhaust valve of agricultural machinery speed reducer, specifically relates to an agricultural speed reducer exhaust leakproof device. BACKGROUND

[0002] At present, the exhaust valve structure of agricultural machinery speed reducer is that small holes drilled through in bolt axial direction and bolt head radial direction form exhaust holes, which are installed on the end cover of the speed reducer, as shown in the figure. Figure 6 Its function is that the heat generated when the speed reducer works makes the air in the speed reducer heat up, and the heated air is discharged through the small holes drilled through in bolt axial direction and radial direction.

[0003] The speed reducer adopts 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 air inlet port around the bottom of the exhaust hole. Some lubricating oil directly splashes into the air inlet port of the exhaust hole. When the agricultural machine works in the bumpy field, the lubricating oil produces surges and hits the exhaust valve, which makes the lubricating oil in the air inlet port of the exhaust hole gradually move up. At the same time, the high-speed rotation of the gear of the speed reducer generates a large amount of heat, and the gas in the speed reducer heats up. Due to the capillary effect, a section of lubricating oil and a section of air are formed in the small hole and gradually move up until they seep out from the radial small hole of the bolt head. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the utility model provides an agricultural speed reducer exhaust leakproof device, which improves the exhaust valve of the agricultural machinery speed reducer by using the principle of one-way valve, and solves the problems of oil seepage and oil leakage of the exhaust valve.

[0005] To achieve the above purpose, the following technical scheme is adopted: an agricultural speed reducer exhaust leakproof device, comprising a bolt valve body, an exhaust hole is arranged in the bolt valve body, the exhaust hole comprises a radial exhaust hole and an axial exhaust hole, wherein the port of the radial exhaust hole is an exhaust end, the port of the axial exhaust hole is an air inlet end,

[0006] The axial exhaust hole comprises a first exhaust hole and a second exhaust hole, the second exhaust hole is in radial communication with the first exhaust hole, and the diameter of the first exhaust hole is greater than that of the second exhaust hole,

[0007] A floating ball is arranged in the first exhaust hole to ensure that the floating ball moves up to the communication position between the first exhaust hole and the second exhaust hole when subjected to buoyancy, and blocks the second exhaust hole,

[0008] The air inlet end of the axial exhaust hole is provided with a blocking piece, the blocking piece is provided with a through hole, and the blocking piece is used for blocking the floating ball in the first exhaust hole.

[0009] Further, the plug adopts a screw plug, the air inlet end of the axial exhaust hole is processed with threads, and the screw plug is connected with the air inlet end through threads.

[0010] Further, the number of through holes arranged on the plug block is two.

[0011] Further, the difference between the diameter of the section of the exhaust hole and the diameter of the floating ball is 4-6 mm.

[0012] Further, the dust cover is arranged on the top of the bolt valve body, the bolt head of the bolt valve body is covered by the dust cover, and a gap is reserved between the radial exhaust end of the exhaust hole and the dust cover.

[0013] Further, the dust cover comprises a circular groove type cover body and air filtering cotton, the circular groove type cover body comprises a cover top and a cover edge, a ring of air filtering cotton is arranged on the inner side of the cover edge, the lower end surface of the air filtering cotton is higher than the end surface of the cover edge, and the cover top is arranged on the top of the bolt head of the bolt valve body.

[0014] Further, the lower end surface of the air filtering cotton is on the same horizontal line as the lower end surface of the bolt head of the bolt valve body.

[0015] Further, the circular groove type cover body is made of iron or steel.

[0016] Further, the cover top of the circular groove type cover body is connected with the top of the bolt head of the bolt valve body through a magnet.

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

[0018] The utility model discloses beneficial effects: the utility model discloses utilize the principle of check valve to process the axial exhaust hole into two section exhaust holes with different hole diameters, set up the floating ball in the big hole diameter exhaust hole section, when the lubricating oil moves up due to capillary effect, the floating ball floats up and blocks the small hole diameter exhaust hole section, avoid lubricating oil seepage along the exhaust hole. The utility model discloses simple structure and easy processing, solve the oil seepage, oil leakage problem of agricultural machinery speed reducer with very low cost. Meanwhile the utility model discloses utilize the principle of magnetic attraction and set up the dust cover on the top of bolt valve body, prevent dust from entering the speed reducer, increase lubricating oil and the service life of speed reducer, and convenient to install and maintain. DRAWINGS

[0019] Figure 1 It is the cross section schematic view of example 1;

[0020] Figure 2 It is the cross section schematic view of example 2;

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

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

[0023] Figure 5 It is a cross-sectional view of the plug.

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

[0025] As shown: 1, bolt valve body; 2, radial exhaust hole; 3, axial exhaust hole; 4, floating ball; 5, plug; 6, dust cover; 7, magnet; 60, round groove type cover; 61, air filter cotton; 100, bolt head; 101, bolt rod; 200, exhaust end; 300, air inlet end; 301, one section exhaust hole; 302, two section exhaust hole; 500, through hole; 600, cover top; 601, cover edge. DETAILED DESCRIPTION

[0026] Example 1

[0027] The following will be further illustrated in conjunction with the drawings, Figure 1 It is a schematic view of the example, as shown, the example is an agricultural speed reducer exhaust oil leakage prevention device, including a bolt valve body, the bolt valve body 1 is provided with an exhaust hole, 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, the port of the axial exhaust hole 3 is the air inlet end 300,

[0028] The axial exhaust hole 3 is divided into one section exhaust hole 301 and two section exhaust hole 302, the hole diameter of the one section exhaust hole 301 is greater than the hole diameter of the two section exhaust hole 302, the two section exhaust hole 302 communicates with the radial exhaust hole 2, the floating ball 4 is arranged in the one section exhaust hole 301, to ensure that the floating ball 4 moves up to the communication between the one section exhaust hole 301 and the two section exhaust hole 302 when subjected to buoyancy, and blocks the two section exhaust hole 302, the difference between the hole diameter of the one section exhaust hole 301 and the diameter of the floating ball 4 is 4-6mm,

[0029] The air inlet end 300 of the axial exhaust hole 3 is provided with a plug 5, the plug 5 adopts a plug, the axial exhaust hole 3 is processed with threads, the plug is connected with the air inlet end 300 by threads, the plug 5 is provided with two through holes 500, the hole diameters of the through holes 500 are all smaller than the diameter of the floating ball 4, the plug 5 blocks the floating ball 4 in the one section exhaust hole 301, while ensuring ventilation.

[0030] Example 2

[0031] As Figure 2As shown, based on the structure of Embodiment 1, a dust cover 6 is provided on the top of the bolt valve body 1 in this example. The dust cover 6 includes a circular groove-shaped cover 60 and an air filter cotton 61. The circular groove-shaped cover 60 is made of iron or steel and includes a top cover 600 and a cover edge 601. A ring of air filter cotton 61 is provided on the inner side of 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 top cover 600 is set on the top of the bolt head 100 of the bolt valve body 1, so that the dust cover 6 covers the bolt head 100 of the bolt valve body 1. There is a gap of 5-8mm between the exhaust end 200 of the radial exhaust hole 2 and the air filter cotton 61. The top cover 600 is connected to the top of the bolt head 100 of the bolt valve body 1 through a magnet 7.

[0032] Examples 1 and 2 involve improving the original exhaust valve structure. The specific methods are as follows: S1. As... Figures 3-4 As shown, the bolt with the same thread as the original exhaust valve is used as the main body of the bolt valve body 1. The bolt head 100 has a small hole drilled radially through the center of the hexagonal plane to process the radial exhaust hole 2. The bolt rod 101 has a large hole drilled and tapped at the front end of the axial section to process an exhaust hole 301 and a thread for connecting with the plug 5. The large hole can eliminate capillary tubes. The rear end has a small hole drilled to communicate with the radial small hole of the bolt head 100 to process the second exhaust hole 302.

[0033] S2. For example Figure 5 As shown, make a plug 5, using a bolt of the same type as the one tapped in the above steps as a plug, drill two small holes axially to process a through hole 500;

[0034] S3. Place a floating ball 4 inside the first-stage exhaust port. The floating ball 4 can be a hollow plastic ball. The function of the floating ball 4 is: the splashing of the gear meshing of the reducer and the surge of lubricating oil will float the floating ball 4. The floating ball 4 will seal the second-stage exhaust port 302, acting as a one-way valve to prevent lubricating oil from entering the second-stage exhaust port 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: first, to prevent the float from falling; second, to allow air to pass through; and third, to tighten the plug through the two holes.

[0035] S4. To make a dust cover 6, first process a round groove-shaped cover body 60, then attach a ring of air filter cotton 61 along the inner side 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 should be 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 on the inner side of the top of the cover 600.

[0036] S5. The bolt valve body 1 made in S3 is installed on the speed reducer, the dust cover 6 is adsorbed 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, the edge of the dust cover 6 leaves a certain gap with the surface of the speed reducer, the lower end surface of the air filter cotton 61 is attached to the surface of the speed reducer, after the agricultural machine is not working, the cooling air of the speed reducer contracts, the outside air enters, and the dust is prevented from entering the speed reducer.

[0037] The utility model is not limited to the above-mentioned embodiment, any equivalent idea or change in the technical range disclosed in the utility model is listed as the protection scope of the utility model.

Claims

1. An agricultural reduction gear exhaust oil leakage prevention device, comprising a bolt valve body (1), an exhaust hole is arranged in the bolt valve body (1), the exhaust hole comprises a radial exhaust hole (2) and an axial exhaust hole (3), wherein, The port of the radial exhaust hole (2) is an exhaust end (200), and the port of the axial exhaust hole (3) is an intake end (300), characterized in that The axial exhaust hole (3) comprises a first exhaust hole (301) and a second exhaust hole (302), the second exhaust hole (302) is communicated with the radial exhaust hole (2), and the diameter of the first exhaust hole (301) is larger than that of the second exhaust hole (302), A floating ball (4) is arranged in the first exhaust hole (301), so that the floating ball (4) moves up to the communication position of the first exhaust hole (301) and the second exhaust hole (302) when the floating ball (4) is subjected to buoyancy, and the second exhaust hole (302) is blocked, The intake end (300) of the axial exhaust hole (3) is provided with a blocking piece (5), the blocking piece (5) is provided with a through hole (500), and the blocking piece (5) is used for blocking the floating ball (4) in the first exhaust hole (301).

2. The agricultural speed reducer exhaust oil leakage prevention device according to claim 1, characterized by, The blocking piece (5) adopts a thread plug, the intake end (300) of the axial exhaust hole (3) is provided with threads, and the thread plug is connected with the intake end (300) through threads.

3. The agricultural speed reducer exhaust oil leakage prevention device according to claim 2, characterized by, The number of the through holes (500) arranged on the blocking piece (5) is two.

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

5. The agricultural reduction gear oil leakage preventing device according to any one of claims 1 to 4, characterized in that, The top of the bolt valve body (1) is provided with a dust cover (6), the bolt head (100) of the bolt valve body (1) is covered by the dust cover (6), and a gap is reserved between the exhaust end (200) of the radial exhaust hole (2) of the exhaust hole and the dust cover (6).

6. The agricultural speed reducer exhaust oil leakage prevention device according to claim 5, characterized by, The dust cover (6) comprises a circular groove type cover body (60) and air filter cotton (61), the circular groove type cover body (60) comprises a cover top (600) and a cover edge (601), a circle of air filter cotton (61) is arranged 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 agricultural speed reducer exhaust oil leakage prevention device according to claim 6, characterized by, 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 agricultural speed reducer exhaust oil leakage prevention device according to claim 7, characterized by, The circular groove type cover body (60) is made of iron or steel.

9. The agricultural speed reducer exhaust oil leakage prevention device according to claim 8, characterized by, The cover top (600) of the circular groove type cover body (60) is connected with the top of the bolt head (100) of the bolt valve body (1) through a magnet (7).

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

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