CN217301447U

CN217301447U - Split type worm gear reduction box

Info

Publication number: CN217301447U
Application number: CN202221168293.0U
Authority: CN
Inventors: 王雪峰; 吕红进; 蔡根勇; 赵晓康; 李凯; 项文豪; 涂画
Original assignee: Jinyun Boxin Machinery Co ltd
Current assignee: Jinyun Boxin Machinery Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-08-26
Anticipated expiration: 2032-05-16

Abstract

The utility model discloses a split type worm gear reducing gear box, including last box and lower box, go up the box with install sealed the pad down between the box, the inboard of lower box upper end is equipped with annular grafting notch, the inboard of going up the box lower extreme be equipped with peg graft to the inside grafting flange of grafting notch, sealed pad place in the grafting notch, sealed upper end of filling up is less than the upper end of box down, go up and still be equipped with the pressure vent valve who is used for the pressure release on the box, the utility model discloses a grafting flange pegs graft to in the grafting notch, effectually prevent that lubricating oil from leaking, utilizes the inside pressure of pressure vent valve control reducing gear box simultaneously, reduces the risk that lubricating oil leaked.

Description

Split type worm gear reduction box

Technical Field

The utility model relates to a reducing gear box technical field especially relates to a split type worm gear reducing gear box.

Background

The reduction gearbox generally comprises an upper box body and a lower box body, and a sealing gasket is arranged between the upper box body and the lower box body. Here the sealing gasket is used to prevent leakage of lubricating oil inside the gearbox. The reducing gear box is in the use, and along with the rotation of gear, the inside lubricating oil temperature of gear box risees gradually, causes the increase of gear box internal pressure, and sealed pad after ageing causes the sealed effect of reducing gear box relatively poor, and the inside lubricating oil of gear box outwards flows from sealed pad, and then causes lubricating oil to leak the normal use that influences the reducing gear box. Therefore, how to design a split worm gear reduction box for improving the sealing effect becomes a technical problem to be solved urgently by the people in the field.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical problem mentioned in the background art, the utility model aims to provide a worm gear reducing gear box solves the increase of reducing gear box internal pressure and causes the problem that lubricating oil leaked.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a split type worm gear reducing gear box, includes box and lower box, go up the box with install sealed the pad down between the box, the inboard of box upper end is equipped with annular grafting notch down, the inboard of going up the box lower extreme is equipped with to plug in to the inside grafting flange of grafting notch, sealed pad place in the grafting notch, sealed upper end of filling up is less than the upper end of box down, go up and still be equipped with the pressure discharge valve who is used for the pressure release on the box.

Furthermore, the lower end of the upper box body is provided with a mounting groove penetrating through the inner wall and the outer wall of the upper box body, an output shaft penetrating through the mounting groove and extending outwards is rotatably connected in the upper box body, a worm wheel is fixedly connected to the output shaft, a mounting hole penetrates through the side wall of the upper box body, a worm penetrating through the mounting hole is rotatably connected in the upper box body, and the worm is in threaded fit with the worm wheel.

Further, the inner wall of mounting groove is equipped with first seal groove, the upper end of box is equipped with the second seal groove down, the cover is equipped with end cover on the output shaft, end cover install in first seal groove and second seal groove.

Furthermore, a bearing bracket is fixedly arranged on the inner wall of the lower box body, a bearing is sleeved on the output shaft in the reduction gearbox, and the bearing is placed on the bearing bracket.

Furthermore, the inserting notch is provided with a positioning hole, the inserting flange is fixedly provided with a positioning rod, the sealing gasket is provided with a hole opposite to the positioning hole in a penetrating manner, and the lower end of the positioning rod penetrates through the sealing gasket and extends into the positioning hole.

Furthermore, be equipped with on the upper box body and add the hydraulic fluid port, it is located to add the hydraulic fluid port directly over the worm, it has the lid to add threaded connection on the hydraulic fluid port.

Furthermore, a valve body mounting opening is formed in the cover body in a vertically penetrating mode, the pressure exhaust valve is mounted in the valve body mounting opening, a valve core cavity, an air inlet and an air outlet are formed in the pressure exhaust valve, the valve core cavity is communicated with the inner cavity of the reduction gearbox through the air inlet, the valve core cavity is communicated with the outside through the air outlet, and a valve core for opening or closing the air inlet is connected to the inside of the valve core cavity in a sliding mode.

Furthermore, a spring is arranged in the valve core cavity, one end of the spring is fixedly connected with the valve core, the other end of the spring is fixedly connected with the inner wall of the valve core cavity, and in an initial state, the valve core closes the air inlet.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses place sealed the pad and utilize the grafting flange to realize the sealing between the upper and lower box inside simultaneously at the grafting notch, can prevent that lubricating oil from outwards leaking through sealed the pad, because sealed upper end of filling up is less than the upper end of box down, even sealed pad is ageing, lubricating oil gets into inside the grafting notch, lubricating oil is in the grafting notch by the edge restriction of grafting notch this moment, prevents continuation of lubricating oil and leaks, when the inside pressure of reducing gear box risees, carries out the pressure release to the reducing gear box through pressure vent valve, reduces the risk that lubricating oil leaked, when reducing gear box internal pressure is lower, pressure vent valve closes, prevents that external dust from getting into inside the reducing gear box.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a sectional view of the internal structure of the present invention;

FIG. 4 is a schematic structural view of the lower case of the present invention;

FIG. 5 is a schematic structural view of the upper case of the present invention;

FIG. 6 is a schematic view of the installation position of the pressure exhaust valve of the present invention;

fig. 7 is a sectional view of the pressure exhaust valve of the present invention.

In the figure: 1. an upper box body; 11. mounting grooves; 12. mounting holes; 13. an oil adding port; 14. a first positioning plate; 15. inserting flanges; 16. positioning a rod; 17. a first seal groove; 18. a first hole; 2. a lower box body; 21. a second positioning plate; 22. a socket notch; 23. positioning holes; 24. a support bracket; 25. an oil drainage port; 26. a second seal groove; 27. a second hole; 3. positioning the bolt; 4. a cover body; 41. a valve body mounting opening; 42. a pressure exhaust valve; 421. a spool cavity; 422. a valve core; 423. a spring; 424. an air inlet; 425. an exhaust port; 5. a worm; 6. an output shaft; 61. a worm gear; 62. a bearing; 7. sealing the end cap; 8. a gasket; 9. and (4) an oil plug.

Detailed Description

The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 7, the present embodiment provides a split worm gear reduction gearbox, mainly solving the problem of lubricant leakage inside the reduction gearbox.

As shown in fig. 1 and 2, the pressure relief valve comprises an upper box body 1 and a lower box body 2, a sealing gasket 8 is installed between the upper box body 1 and the lower box body 2, an annular inserting groove opening 22 is formed in the inner side of the upper end of the lower box body 2, an inserting flange 15 inserted into the inserting groove opening 22 is fixedly arranged on the inner side of the lower end of the upper box body 1, the sealing gasket 8 is placed in the inserting groove opening 22, the upper end of the sealing gasket 8 is lower than the upper end of the lower box body 2, a pressure relief valve 42 for pressure relief is further arranged on the upper box body 1, when the internal pressure of a reduction gearbox is lower than the exhaust pressure of the pressure relief valve 42, the pressure relief valve 42 is closed, and when the internal pressure of the reduction gearbox is greater than the exhaust pressure of the pressure relief valve 42, the pressure relief valve 42 is opened.

Specifically, the method comprises the following steps: the sealing gasket 8 is fixed inside the inserting groove opening 22 by using the inserting groove opening 22 on the lower box body 2 and the inserting flange 15 on the upper box body 1, and when a small amount of lubricating oil is left inside the inserting groove opening 22 in time, the lubricating oil is limited by the edge of the inserting groove opening 22 at the moment, so that the lubricating oil is prevented from flowing outwards; when the temperature in the reduction gearbox rises, the pressure in the reduction gearbox is increased, when the pressure in the reduction gearbox is greater than the threshold value of the pressure exhaust valve 42, the pressure exhaust valve 42 is opened at the moment, the pressure relief of the reduction gearbox is realized, the leakage of lubricating oil is prevented, when the pressure in the reduction gearbox is smaller than the threshold value of the pressure exhaust valve 42, the pressure exhaust valve 42 is closed at the moment, external dust can be prevented from entering the reduction gearbox, and the influence of the external dust is reduced.

As shown in fig. 4 and 5, in this embodiment, a positioning hole 23 is formed in a bottom wall of the insertion slot 22, a positioning rod 16 is fixedly disposed on the insertion flange 15, a hole opposite to the positioning hole 23 is formed in the sealing gasket 8 in a penetrating manner, and a lower end of the positioning rod 16 penetrates through the sealing gasket 8 and extends into the positioning hole 23, so that the upper case 1 and the lower case 2 are quickly mounted, and the upper case and the lower case are conveniently positioned.

In order to realize the installation of the input shaft and the output shaft, in this embodiment, as shown in fig. 2 and fig. 3, the lower end of the upper box 1 is provided with an installation groove 11 penetrating through the inner wall and the outer wall of the upper box 1, an output shaft 6 penetrating through the installation groove 11 and extending outwards is connected to the inner bearing of the upper box 1, a worm wheel 61 is fixedly connected to the output shaft 6, a mounting hole 12 is formed in the side wall of the upper box 1 in a penetrating manner, a worm 5 penetrating through the mounting hole 12 is rotatably connected to the upper box 1, the worm 5 is in threaded fit with the worm wheel 61, a bearing 62 is rotatably connected to the output shaft 6, and a bearing bracket 24 for bearing the bearing 62 is fixedly arranged on the inner wall of the lower box 2.

Through the arrangement, the bearing 62 is placed on the bearing bracket 24 from top to bottom, the upper box body 1 is placed on the output shaft 6 from top to bottom at the moment, the mounting groove 11 is clamped on the output shaft, and the positioning rod 16 is inserted into the positioning hole 23 at the moment, so that the worm and worm wheel are mounted.

In order to enhance the sealing at the position of the output shaft 6, in this embodiment, as shown in fig. 4 and 5, a first sealing groove 17 is disposed on an inner wall of the mounting groove 11, a second sealing groove 26 is disposed at an upper end of the lower case 2, a sealing end cover 7 is sleeved on the output shaft 6, and the sealing end cover 7 is mounted in the first sealing groove 17 and the second sealing groove 26, so as to enhance the sealing at the position of the output shaft 6.

In order to fix the upper box body 1 and the lower box body 2, a first positioning plate 14 is fixed on the upper box body 1, a second positioning plate 21 is fixedly arranged on the lower box body 2, a first hole 18 is formed in the first positioning plate 14 in a penetrating mode, a second hole 27 corresponding to the first hole 18 is formed in the second positioning plate 21, a positioning bolt 3 is inserted between the first hole 18 and the second hole 27, and therefore the upper box body 1 and the lower box body 2 are fixed.

In order to add the lubricating oil, in the present embodiment, as shown in fig. 6, an oil adding port 13 is provided on the upper case 1, the oil adding port 13 is located right above the worm 5, and a cover 4 is screwed to the oil adding port 13.

Through the setting, rotatory lid 4 breaks away from lid 4 and oil feeding port 13, through oil feeding port 13 to the inside lubricating oil that adds of reducing gear box this moment, lubricating oil flows through worm and worm wheel this moment, and then lubricates the worm gear junction, has guaranteed the steady operation of reducing gear box.

In order to realize the pressure relief of the internal pressure of the reduction gearbox, in this embodiment, as shown in fig. 7, a valve body mounting port 41 is arranged in the cover 4 in a vertical penetrating manner, the pressure exhaust valve 42 is mounted in the valve body mounting port 41, a valve core chamber 421, an air inlet 424 and an air outlet 425 are arranged in the pressure exhaust valve 42, the valve core chamber 421 is communicated with the inner cavity of the reduction gearbox by the air inlet 424, the valve core chamber 421 is communicated with the outside by the air outlet 425, a valve core 422 for opening or closing the air inlet 424 is slidably connected in the valve core chamber 421, a spring 423 is arranged in the valve core chamber 421, one end of the spring 423 is fixedly connected with the valve core 422, the other end of the spring 423 is fixedly connected with the inner wall of the valve core chamber 421, and in an initial state, the valve core 422 closes the air inlet 424.

Through the arrangement, when the pressure inside the reduction gearbox is greater than the threshold value of the pressure exhaust valve 42, the gas inside the reduction gearbox enters the valve core cavity 421 through the gas inlet 424 at the moment, the valve core 422 is pushed to move upwards and compress the spring 423 at the moment, the gas inside the valve core cavity 421 is discharged upwards through the gas outlet 425 at the moment, and when the pressure inside the reduction gearbox is lower than the threshold value of the pressure exhaust valve 42, the spring 423 pushes the valve core 422 to be extruded to the position of the gas inlet 424, so that the gas inlet 424 is closed, gas leakage is prevented, and meanwhile, external dust can be prevented from entering the reduction gearbox.

In order to discharge the lubricating oil, in the present embodiment, as shown in fig. 2 and 4, an oil drain opening 25 is provided on the bottom wall of the lower box 2, an oil plug 9 is connected to the oil drain opening 25 through a female screw, and when the oil plug 9 is screwed out of the oil drain opening 25, the lubricating oil in the lower box 2 flows out through the oil drain opening 25.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a split type worm gear reducing gear box, includes box (1) and lower box (2), go up box (1) with install sealed pad (8), its characterized in that down between box (2): the inboard of lower box (2) upper end is equipped with annular grafting notch (22), it is equipped with to insert to go up the inboard of box (1) lower extreme insert to the inside grafting flange (15) of grafting notch (22), sealed pad (8) place in grafting notch (22), the upper end of sealed pad (8) is less than the upper end of box (2) down, it still is equipped with pressure discharge valve (42) that are used for the pressure release to go up on box (1).

2. The split type worm gear reduction gearbox according to claim 1, characterized in that: go up the lower extreme of box (1) and be equipped with and run through go up mounting groove (11) of the interior outer wall of box (1), it is connected with to go up box (1) internal rotation and passes mounting groove (11) and outside output shaft (6) that extend, fixedly connected with worm wheel (61) on output shaft (6), the lateral wall of going up box (1) runs through and is equipped with mounting hole (12), it is connected with to go up box (1) internal rotation and runs through worm (5) of mounting hole (12), worm (5) with worm wheel (61) screw-thread fit.

3. The split worm gear reduction gearbox according to claim 2, characterized in that: the inner wall of mounting groove (11) is equipped with first seal groove (17), the upper end of lower box (2) is equipped with second seal groove (26), the cover is equipped with end cover (7) on output shaft (6), end cover (7) install in first seal groove (17) and second seal groove (26).

4. The split worm gear reduction gearbox according to claim 2, characterized in that: the inner wall of the lower box body (2) is fixedly provided with a supporting bracket (24), the output shaft inside the reduction gearbox is sleeved with a bearing (62), and the bearing (62) is placed on the supporting bracket (24).

5. The split type worm gear reduction gearbox according to claim 1, characterized in that: the plug-in type sealing gasket is characterized in that a positioning hole (23) is formed in the plug-in notch (22), a positioning rod (16) is fixedly arranged on the plug-in flange (15), a hole opposite to the positioning hole (23) penetrates through the sealing gasket (8), and the lower end of the positioning rod (16) penetrates through the sealing gasket (8) and extends into the positioning hole (23).

6. The split worm gear reduction gearbox according to claim 2, characterized in that: go up to be equipped with on box (1) and add hydraulic fluid port (13), it is located to add hydraulic fluid port (13) directly over worm (5), it has lid (4) to add threaded connection on hydraulic fluid port (13).

7. The split worm gear reducer according to claim 6, wherein: the cover body (4) is provided with a valve body mounting opening (41) in an up-and-down penetrating manner, the pressure exhaust valve (42) is mounted in the valve body mounting opening (41), a valve core cavity (421), an air inlet (424) and an air outlet (425) are arranged inside the pressure exhaust valve (42), the valve core cavity (421) is communicated with an inner cavity of the reduction gearbox through the air inlet (424), the valve core cavity (421) is communicated with the outside through the air outlet (425), and a valve core (422) for opening or closing the air inlet (424) is connected to the inside of the valve core cavity (421) in a sliding manner.

8. The split worm gear reduction gearbox according to claim 7, characterized in that: a spring (423) is arranged in the valve core cavity (421), one end of the spring (423) is fixedly connected with the valve core (422), the other end of the spring is fixedly connected with the inner wall of the valve core cavity (421), and in an initial state, the valve core (422) closes the air inlet (424).