Novel reduction gearbox

Abstract

The utility model relates to the field of reduction gearboxes, and particularly discloses a novel reduction gearbox which comprises an upper gearbox body, a lower gearbox body matched with the upper gearbox body, a first gear rotationally arranged in the lower gearbox body, a second gear rotationally arranged in the lower gearbox body and a filtering mechanism arranged in the lower gearbox body. The first gear is meshed with the second gear, the first gear rotates to drive the second gear to rotate, an oil collecting groove is formed in the bottom of the lower box body, and an oil pump is arranged in the lower box body. Lubricating oil is sucked into the filtering mechanism from the oil collecting groove through the oil pump, the lubricating oil is sprayed out from the upper portion after being filtered through the filtering mechanism, the meshing position of the first gear and the second gear is lubricated, and the lubricating oil drips downwards under the action of gravity after lubricating the gears and is collected into the oil collecting groove in the bottom of the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of reduction gearboxes, in particular to a novel reduction gearbox. Background Art

[0002] The reducer is an independent component consisting of a gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. The reducer housing is the basic component for installing each transmission shaft. During the use of the gearbox, the internal gear set runs at high speed, and it is necessary to ensure that a certain amount of lubricating oil is maintained between the transmission components. With the continuous use of the reducer, the internal lubricating oil will come into contact with the oxygen in the air and undergo an oxidation reaction. These oxidation products will reduce the viscosity of the lubricating oil, resulting in a deterioration in the lubrication effect. At the same time, impurities, dust, metal particles and other pollutants may enter the reducer. These pollutants will react with the lubricating oil to form sediments or solid particles. These solid particles will increase friction and wear, and hinder the flow of the lubricating oil, reducing the lubrication effect. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a new type of reduction box.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A novel reduction box includes an upper box, a lower box matching the upper box, a gear 1 rotatably arranged in the lower box, a gear 2 rotatably arranged in the lower box, and a filter mechanism arranged in the lower box, wherein the gear 1 and the gear 2 are meshed, and the rotation of the gear 1 drives the rotation of the gear 2, an oil collecting tank is arranged at the bottom of the lower box, and an oil pump is arranged in the lower box. The oil pump sucks lubricating oil from the oil collecting tank into the filter mechanism, and the lubricating oil is filtered by the filter mechanism and then sprayed out from the top to lubricate the meshing portion of the gear 1 and the gear 2.

[0006] Preferably, the filtering mechanism comprises an oil inlet pipe, an oil outlet pipe and a filter, the oil inlet pipe and the oil outlet pipe are both connected to the filter, an oil pump pumps lubricating oil into the oil inlet pipe, and the lubricating oil is pumped out from the oil outlet pipe after being filtered by the filter.

[0007] Preferably, the filter is a hollow cylinder, a filter screen is arranged inside the filter, the filter comprises filter cartridge 1 and filter cartridge 2, an oil inlet pipe 1 is arranged at the top end of the filter cartridge 1, one end of the oil inlet pipe 1 is arranged outside the filter screen, an oil outlet pipe 1 is arranged at the center of the top end of the filter cartridge 1, one end of the oil outlet pipe 1 is arranged inside the filter screen; an oil inlet pipe 2 is arranged at the top end of the filter cartridge 2, one end of the oil inlet pipe 2 is arranged outside the filter screen, an oil outlet pipe 2 is arranged at the center of the top end of the filter cartridge 2, one end of the oil outlet pipe 2 is arranged inside the filter screen.

[0008] Preferably, a three-way reversing valve is arranged between the oil inlet pipeline and the oil inlet pipe 1 and the oil inlet pipe 2, and a three-way pipe is arranged between the oil outlet pipeline and the oil outlet pipe 1 and the oil outlet pipe 2.

[0009] Preferably, a protective valve is arranged at the top of the filter, and the protective valve includes a valve seat, a slider, a valve stem, a spring and a pressure cover. A pressure relief port is arranged on one side of the valve seat, the slider is slidably arranged in the valve seat, the valve stem is arranged at the top of the slider, the top of the valve stem is slidably arranged in the pressure cover, the spring is arranged on the outer surface of the valve stem, one end of the spring is arranged at the top of the slider, and the other end is arranged at the bottom end of the pressure cover.

[0010] Preferably, the protection valve includes protection valve one and protection valve two, the protection valve one is arranged at the top end of the filter cartridge one, the bottom end of the protection valve one is arranged outside the filter mesh cover, and the pressure relief port of the protection valve one is connected to the top end pipe of the filter cartridge two; the protection valve two is arranged at the top end of the filter cartridge two, the bottom end of the protection valve two is arranged outside the filter mesh cover, and the pressure relief port of the protection valve two is connected to the top end pipe of the filter cartridge one.

[0011] The beneficial effects of the utility model are as follows: the lubricating oil is filtered by arranging the filtering mechanism; two filter cartridges are arranged to prevent the filter cartridges from being clogged and affecting the lubrication effect; and the protection valve is arranged, when one filter cartridge is clogged and affects the filtering effect, the other filter cartridge is automatically opened for filtering, and there is no need to frequently check whether the filter screen cover is clogged, thereby extending the effective service life of the filter screen cover, and there is no need to worry about the clogging of the filter screen cover affecting the filtering effect of the reduction box and replacing the filter screen cover in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a novel reduction gearbox proposed by the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the structure after removing the upper box;

[0014] Figure 3 for Figure 2 Schematic diagram of the structure after removing the lower box;

[0015] Figure 4 It is a structural schematic diagram of the filtering mechanism;

[0016] Figure 5 for Figure 4 A schematic diagram of the structure after the filter housing is hidden;

[0017] Figure 6 This is a schematic diagram of the structure of the protection valve;

[0018] Figure 7 Cross-sectional view of the protection valve.

[0019] In the figure: 11 upper housing, 12 lower housing, 121 oil collecting tank, 21 gear 1, 22 gear 2, 3 filtering mechanism, 31 oil inlet pipe, 311 oil inlet pipe 1, 312 oil inlet pipe 2, 32 oil outlet pipe, 321 oil outlet pipe 1, 322 oil outlet pipe 2, 33 filter, 330 filter screen, 331 filter cartridge 1, 332 filter cartridge 2, 34 three-way reversing valve, 35 three-way pipe, 36 protection valve, 3601 protection valve 1, 3602 protection valve 2, 361 valve seat, 3611 pressure relief port, 362 slider, 363 valve stem, 364 spring, 365 gland, 4 oil pump. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0021] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms center, top, bottom, left, right, vertical, horizontal, inside, outside, etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms first, second, and third are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] Please refer to Figure 1-7A novel reduction box includes an upper case 11, a lower case 12 matched with the upper case 11, a gear 1 21 rotatably arranged in the lower case 12, a gear 2 22 rotatably arranged in the lower case 12, and a filter mechanism 3 arranged in the lower case 12, wherein the gear 1 21 and the gear 2 22 are meshed, and the rotation of the gear 1 21 drives the gear 2 22 to rotate, an oil collecting tank 121 is arranged at the bottom of the lower case 12, and an oil pump 4 is arranged in the lower case 12. The oil pump 4 sucks the lubricating oil from the oil collecting tank 121 into the filter mechanism 3, and the lubricating oil is filtered by the filter mechanism 3 and then sprayed from the top to lubricate the meshing part of the gear 1 21 and the gear 2 22. After lubricating the gears, the lubricating oil drips downward under the action of gravity and is collected in the oil collecting tank 121 at the bottom of the case.

[0023] In order to filter the lubricating oil in the oil collecting tank 121, the filtering mechanism 3 includes an oil inlet pipe 31, an oil outlet pipe 32 and a filter 33. The oil inlet pipe 31 and the oil outlet pipe 32 are both connected to the filter 33. The oil pump 4 pumps the lubricating oil into the oil inlet pipe 31, and the oil enters the filter 33 from the oil inlet pipe 31 and then flows out from the oil outlet pipe 32 after being filtered.

[0024] Specifically, the filter 33 is a hollow cylinder, a filter screen cover 330 is arranged inside the filter 33, the filter 33 includes a filter cartridge 1 331 and a filter cartridge 2 332, an oil inlet pipe 1 311 is arranged at the top of the filter cartridge 1 331, one end of the oil inlet pipe 1 311 is arranged outside the filter screen cover 330, an oil outlet pipe 1 321 is arranged at the center of the top of the filter cartridge 1 331, one end of the oil outlet pipe 1 321 is arranged inside the filter screen cover 330, the lubricating oil is pumped into the filter cartridge 1 331 from the oil inlet pipe 1 311, and the lubricating oil is located in the filter screen cover 330. On the outside of the cover 330, the lubricating oil filtered by the filter screen cover 330 is pumped out from the oil outlet pipe 1 321; an oil inlet pipe 2 312 is arranged at the top of the filter cylinder 332, one end of the oil inlet pipe 2 312 is arranged outside the filter screen cover 330, and an oil outlet pipe 2 322 is arranged at the center of the top of the filter cylinder 332, one end of the oil outlet pipe 2 322 is arranged in the filter screen cover 330, the lubricating oil is pumped into the filter cylinder 332 from the oil inlet pipe 2 312, filtered by the filter screen cover 330, and then pumped out from the oil outlet pipe 2 322.

[0025] In order to control which filter cartridge the lubricating oil is filtered from, a three-way reversing valve 34 is provided between the oil inlet pipe 31 and the oil inlet pipe 1 311 and the oil inlet pipe 2 312 , and a three-way pipe 35 is provided between the oil outlet pipe 32 and the oil outlet pipe 1 321 and the oil outlet pipe 2 322 . In this embodiment, the three-way reversing valve 34 is used to control the lubricating oil to start filtering from the filter cartridge 1 331, the lubricating oil flows from the oil inlet pipe 31 through the three-way reversing valve 34 to the oil inlet pipe 1 311 and enters the filter cartridge 1 331 for filtration, and the filtered lubricating oil flows from the oil outlet pipe 1 321 through the three-way pipe 35 to the oil outlet pipe 32; by switching the direction of the three-way reversing valve 34, the lubricating oil can be controlled to start filtering from the filter cartridge 2 332, the lubricating oil flows from the oil inlet pipe 31 through the three-way reversing valve 34 to the oil inlet pipe 2 312 and enters the filter cartridge 2 332 for filtration, and the filtered lubricating oil flows from the oil outlet pipe 2 322 through the three-way pipe 35 to the oil outlet pipe 32.

[0026] In order to prevent the mesh cover of the filter 33 from being clogged and affecting the filtering effect after long-term use, a protective valve 36 is arranged at the top of the filter 33, and the protective valve 36 includes a valve seat 361, a slider 362, a valve stem 363, a spring 364 and a pressure cover 365. A pressure relief port 3611 is arranged on one side of the valve seat 361, and the bottom of the valve seat is hollow. The slider 362 is slidably arranged in the valve seat 361, the valve stem 363 is arranged at the top of the slider 362, and the top of the valve stem 363 is slidably arranged in the pressure cover 365. The spring 364 is arranged on the outer surface of the valve stem 363, one end of the spring 364 is arranged at the top of the slider 362, and the other end is arranged at the bottom of the pressure cover 365.

[0027] When there is enough thrust at the bottom of the slider 362, the slider 362 will slide upward in the valve seat 361, squeezing the spring 364, so that the bottom of the valve seat 361 is connected to the pressure relief port 3611; when the pressure at the bottom of the slider 362 decreases, the slider 362 slides downward under the reverse thrust of the spring 364, so that the bottom of the valve seat 361 is disconnected from the pressure relief port 3611.

[0028] In order to switch the working filter cartridge when the filter screen cover 330 is blocked, the protection valve 36 includes a protection valve 1 3601 and a protection valve 2 3602, the protection valve 1 3601 is arranged at the top of the filter cartridge 1 331, the bottom end of the protection valve 1 3601 is arranged outside the filter screen cover 330, and the pressure relief port 3611 of the protection valve 1 3601 is connected to the top pipe of the filter cartridge 2 332; the protection valve 2 3602 is arranged at the top of the filter cartridge 2 332, the bottom end of the protection valve 2 3602 is arranged outside the filter screen cover 330, and the pressure relief port 3611 of the protection valve 2 3602 is connected to the top pipe of the filter cartridge 1 331.

[0029] When the filter screen 330 in the filter 33 is severely clogged and cannot be effectively filtered, as more and more lubricating oil is pumped into the filter 33, the hydraulic pressure in the filter 33 increases, thereby pushing the slider 362 to move upward in the valve seat 361, so that the pressure relief port 3611 is connected to the bottom of the valve seat 361, and the lubricating oil is discharged upward from the pressure relief port 3611, flows from the filter cartridge 1 331 into the filter cartridge 2 332, and then flows out from the oil outlet pipe 2 322 after being filtered by the filter cartridge 2 332. Although the lubricating oil flows into the filter cartridge 1 331, it flows from the protection valve 1 3601 to the filter cartridge 2 332 and then flows out.

[0030] When the filter screen cover 330 in the filter cartridge 1 331 cannot filter effectively, the filter screen cover 330 in the filter cartridge 1 331 needs to be replaced. At this time, the three-way reversing valve 34 controls the lubricating oil to start filtering from the filter cartridge 2 332. During operation, the filtered oil flows from the oil inlet pipe 2 312 into the filter cartridge 2 332, and then flows out from the oil outlet pipe 2 322 after filtering. Similarly, when the filter screen cover 330 in the filter cartridge 2 332 is blocked, the lubricating oil will flow from the protection valve 2 3602 to the filter cartridge 1 331 and then flow out after filtering. By setting the protection valves 36, the working filter can be automatically switched when the filter screen cover 330 is blocked, and the service life of the filter screen cover 330 is increased, without worrying about replacing the filter screen cover 330 in advance due to poor filtering effect.

Claims

1. A new type of reduction gearbox, characterized in that: The invention comprises an upper housing (11), a lower housing (12) matched with the upper housing (11), a gear 1 (21) rotatably arranged in the lower housing (12), a gear 2 (22) rotatably arranged in the lower housing (12), and a filtering mechanism (3) arranged in the lower housing (12), wherein the gear 1 (21) and the gear 2 (22) are meshed with each other, an oil collecting tank (121) is arranged at the bottom of the lower housing (12), and an oil pump (4) is arranged in the lower housing (12). The filtering mechanism (3) comprises an oil inlet pipeline (31), an oil outlet pipeline (32) and a filter (33); the oil inlet pipeline (31) and the oil outlet pipeline (32) are both connected to the filter (33); an oil pump (4) pumps lubricating oil into the oil inlet pipeline (31), and the lubricating oil is filtered by the filter (33) and then pumped out from the oil outlet pipeline (32).

2. A novel reduction gearbox according to claim 1, characterized in that: The filter (33) is a hollow cylinder. A filter screen (330) is arranged inside the filter (33). The filter (33) comprises a first filter cylinder (331) and a second filter cylinder (332).

3. A novel reduction gearbox according to claim 2, characterized in that: An oil inlet pipe (311) is arranged at the top of the first filter cartridge (331), one end of which is arranged outside the filter screen cover (330); an oil outlet pipe (321) is arranged at the center of the top of the first filter cartridge (331), one end of which is arranged inside the filter screen cover (330); an oil inlet pipe (312) is arranged at the top of the second filter cartridge (332), one end of which is arranged outside the filter screen cover (330); an oil outlet pipe (322) is arranged at the center of the top of the second filter cartridge (332), one end of which is arranged inside the filter screen cover (330).

4. A novel reduction gearbox according to claim 3, characterized in that: A three-way reversing valve (34) is provided between the oil inlet pipeline (31) and the first oil inlet pipeline (311) and the second oil inlet pipeline (312), and a three-way pipe (35) is provided between the oil outlet pipeline (32) and the first oil outlet pipeline (321) and the second oil outlet pipeline (322).

5. A novel reduction gearbox according to claim 4, characterized in that: A protective valve (36) is arranged at the top of the filter (33), and the protective valve (36) comprises a valve seat (361), a slider (362), a valve stem (363), a spring (364) and a pressure cover (365). A pressure relief port (3611) is arranged on one side of the valve seat (361), the slider (362) is slidably arranged in the valve seat (361), the valve stem (363) is arranged at the top of the slider (362), the top of the valve stem (363) is slidably arranged in the pressure cover (365), the spring (364) is arranged on the outer surface of the valve stem (363), one end of the spring (364) is arranged at the top of the slider (362), and the other end is arranged at the bottom of the pressure cover (365).

6. A novel reduction gearbox according to claim 5, characterized in that: The protection valve (36) comprises a protection valve 1 (3601) and a protection valve 2 (3602); the protection valve 1 (3601) is arranged at the top end of the filter cartridge 1 (331), the bottom end of the protection valve 1 (3601) is arranged outside the filter screen cover (330), and the pressure relief port (3611) of the protection valve 1 (3601) is connected to the top end pipeline of the filter cartridge 2 (332); the protection valve 2 (3602) is arranged at the top end of the filter cartridge 2 (332), the bottom end of the protection valve 2 (3602) is arranged outside the filter screen cover (330), and the pressure relief port (3611) of the protection valve 2 (3602) is connected to the top end pipeline of the filter cartridge 1 (331).

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