Self-circulation lubricating device for upper bearing of worm and gear speed reducer

Abstract

The utility model provides an upper bearing self-circulation lubricating device of a worm and gear speed reducer, which comprises a box body, a worm body rotatably connected in the box body and a worm wheel body meshed with the worm body and arranged at the bottom of the worm body, and further comprises a circulation unit arranged on one side of the box body. The circulating unit comprises a rotating disc rotationally connected to the box body and a swing rod rotationally connected to the box body, a limiting groove is formed in the swing rod, a limiting rod matched with the limiting groove is arranged on the rotating disc, the limiting rod is eccentrically arranged, and a tooth ring is arranged on the side, away from the limiting groove, of the swing rod. And a rack is arranged on the box body in a sliding manner. According to the upper bearing self-circulation lubricating device of the worm and gear speed reducer, due to the arrangement of the circulation unit, the oil injection port can move on the top of the worm gear in a reciprocating mode, lubricating oil can be added more evenly, the oil injection effect is improved, and waste of the lubricating oil is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer components, in particular to an upper bearing self-circulating lubrication device of a worm gear reducer. Background Art

[0002] A worm gear reducer is a power transmission mechanism that uses the meshing of a worm and a worm wheel to reduce the speed and increase the torque to achieve a deceleration function. Its working principle is the interaction between the helical surface of the worm and the tooth surface of the worm wheel. When the worm rotates, the thrust of the helical surface of the worm drives the worm wheel to rotate. Since the helix angle of the worm is smaller than the inclination angle of the tooth surface of the worm wheel, the speed of the worm wheel is lower than that of the worm, thereby achieving deceleration. This type of reducer has a compact structure and a large transmission ratio, so it is often used in situations where the reduction ratio is high, space is limited, and efficiency requirements are not high.

[0003] Since the worm and the worm wheel are in direct contact when the worm gear reducer is working, large friction and wear will be generated between the worm wheel and the worm during relative motion. Therefore, lubricant needs to be added there to form an oil film between the contact surfaces to reduce direct contact between metals, thereby reducing wear and increasing service life. However, the oil filling port of the bearing self-circulating lubrication device of the traditional worm gear reducer is often stationary when adding lubricant, resulting in poor lubricating oil addition effect, a certain oil filling dead angle, and a certain amount of waste.

[0004] In view of this, a self-circulating lubrication device for the upper bearing of a worm gear reducer is proposed. Utility Model Content

[0005] The utility model aims to solve the problem of dead angle of oil filling in the traditional worm gear reducer upper bearing self-circulating lubricating device when adding lubricating oil, and provides a worm gear reducer upper bearing self-circulating lubricating device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a self-circulating lubrication device for the upper bearing of a worm gear reducer, comprising a housing, a worm body rotatably connected to the housing, and a worm wheel body meshingly connected to the worm body and arranged at the bottom of the worm body, and also comprising: a circulation unit, the circulation unit being arranged on one side of the housing, the circulation unit comprising a turntable rotatably connected to the housing and a rocker arm rotatably connected to the housing, a limiting slot being provided on the rocker arm, a limiting rod adapted to the limiting slot being provided on the turntable, the limiting rod being eccentrically arranged, and a toothed plate being provided on the side of the rocker arm away from the limiting slot. A tooth ring, a rack is slidably provided on the box body, the rack and the tooth ring are meshed and connected, the rack is fixedly connected to a mounting plate, an oil tank is provided on the mounting plate, an oil filling port for adding lubricating oil is provided at the bottom of the oil tank, and the circulation unit is used to make the oil filling port reciprocate at the top of the worm body so that the lubricating oil is evenly added to all parts of the worm body; a driving unit, the driving unit includes a first gear rotatably connected to the box body and a second gear rotatably connected to the box body and meshed with the first gear, the second gear is fixedly connected to the turntable, and the driving unit is used to drive the circulation unit.

[0007] Preferably, both ends of the rack are provided with a limit frame fixedly connected to the box body and adapted to the size of the rack, and the limit frame is used to limit the rack.

[0008] Preferably, the end of the mounting plate away from the limit frame is fixedly connected to a slider with a T-shaped cross-section, and a slide groove adapted to the size of the slider is provided on the inner wall surface of the box body. The slider and the slide groove are used to keep the mounting plate stable when moving.

[0009] Preferably, the total length of the slide groove is slightly greater than the length of the threaded end of the worm body to ensure that all positions of the worm body can be filled with lubricating oil through the oil filling port.

[0010] Preferably, the drive unit further comprises a first bevel gear fixedly connected to the worm body and a second bevel gear rotatably connected to the housing and meshing with the first bevel gear, and the second bevel gear is fixedly connected to the first gear on a side away from the second bevel gear.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The self-circulating lubrication device for the upper bearing of the worm gear reducer provided by the utility model can make the oil filling port move back and forth on the top of the worm gear through the setting of the circulation unit, so that the lubricating oil is added more evenly, the oil filling effect is improved, and the waste of lubricating oil is reduced.

[0013] 2. The self-circulating lubrication device for the upper bearing of the worm gear reducer provided by the present invention can drive the movement of the circulation unit during the rotation of the worm body through the setting of the drive unit. This setting reduces the operating cost of the device and improves the utilization rate of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0015] In the attached figure:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model.

[0017] Figure 2 This is a diagram showing the positional relationship between the circulation unit and the driving unit according to an embodiment of the present invention.

[0018] Figure 3 This is a bottom view of a circulation unit according to an embodiment of the present invention.

[0019] Figure 4 Schematic diagram of the three-dimensional structure of a driving unit according to an embodiment of the present invention.

[0020] In the picture:

[0021] 1. Housing, 101. Worm gear body, 102. Worm gear body, 2. Circulation unit, 21. Turntable, 22. Rocker arm, 23. Limit rod, 24. Limit groove, 25. Tooth ring, 26. Rack, 27. Limit frame, 28. Mounting plate, 29. Slider, 291. Slide groove, 3. Drive unit, 31. First bevel gear, 32. Second bevel gear, 33. First gear, 34. Second gear, 4. Oil tank, 5. Oil filling port. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-4 .

[0024] The utility model discloses a self-circulating lubricating device for the upper bearing of a worm gear reducer, comprising a housing 1, a worm body 102 rotatably connected to the housing 1, and a worm wheel body 101 arranged at the bottom of the worm body 102 and meshing with the worm body 102. The utility model further comprises: a circulation unit 2, the circulation unit 2 being arranged on one side of the housing 1, the circulation unit 2 comprising a turntable 21 rotatably connected to the housing 1 and a rocker 22 rotatably connected to the housing 1, a limiting groove 24 being provided on the rocker 22, a limiting rod 23 adapted to the limiting groove 24 being provided on the turntable 21, the limiting rod 23 being eccentrically arranged, a toothed ring 25 being provided on the side of the rocker 22 away from the limiting groove 24, A rack 26 is slidingly provided on the body 1, and the rack 26 is meshed with the gear ring 25. A mounting plate 28 is fixedly connected to the rack 26, and an oil tank 4 is provided on the mounting plate 28. An oil filling port 5 for adding lubricating oil is provided at the bottom of the oil tank 4. The circulation unit 2 is used to make the oil filling port 5 reciprocate at the top of the worm body 102 so that the lubricating oil is evenly added to all parts of the worm body 102; the driving unit 3 includes a first gear 33 rotatably connected to the box body 1 and a second gear 34 rotatably connected to the box body 1 and meshed with the first gear 33. The second gear 34 is fixedly connected to the turntable 21, and the driving unit 3 is used to drive the circulation unit 2.

[0025] It should be noted that the limit slot 24 is set to be a long strip so that when the limit rod 23 moves, it can drive the rocker arm 22 to rotate along the axis through the limit slot 24 to drive the movement of the rack 26. The rotating shafts of the turntable 21 and the rocker arm 22 are located on the same vertical plane, and when the limit rod 23 is at the bottom, the limit rod 23 is exactly at the bottom of the limit slot 24. When the limit rod 23 is at the top, the limit rod 23 is exactly at the top of the limit slot 24. When the limit rod 23 is at the top and the bottom, the tooth ring 25 is exactly engaged with the middle position of the rack 26.

[0026] That is, the circulation unit 2 is used to drive the oil tank 4 and the oil filling port 5 to reciprocate in the threaded section of the worm body 102, so that the oil filling port 5 can add lubricating oil at different positions, thereby avoiding the occurrence of dead angles in refueling.

[0027] Specifically, both ends of the rack 26 are provided with a limit frame 27 fixedly connected to the box body 1 and adapted to the size of the rack 26. The limit frame 27 is used to limit the rack 26. Figure 2 As shown, the limit frames 27 are fixed to the box body 1 and symmetrically arranged at both ends of the rack 26 so that the rack 26 will not fall off when moving back and forth.

[0028] Secondly, a slider 29 with a T-shaped cross-section is fixedly connected to the end of the mounting plate 28 away from the limit frame 27, and a slide groove 291 that is adapted to the size of the slider 29 is provided on the inner wall surface of the box body 1. The slider 29 and the slide groove 291 are used to keep the mounting plate 28 stable when moving. When setting, the mounting plate 28 can be adjusted in size according to the specific size of the oil tank 4 or the oil filling port 5.

[0029] In addition, the total length of the slide groove 291 is slightly larger than the length of the threaded end of the worm body 102 to ensure that all positions of the worm body 102 can be filled with lubricating oil by the oil filling port 5, that is, the reciprocating movement range of the oil filling port 5 can cover the threaded section of the worm body 102. This setting can improve the refueling effect and reduce the existence of dead corners in oiling.

[0030] In addition, the drive unit 3 also includes a first bevel gear 31 fixedly connected to the worm body 102 and a second bevel gear 32 rotatably connected to the housing 1 and meshing with the first bevel gear 31. The second bevel gear 32 is fixedly connected to the first gear 33 on the side away from the second bevel gear 32. That is to say, the rotation of the worm body 102 can drive the rotation of the turntable 21, which reduces the waste of resources. At the same time, there is no need to install additional power source equipment, which can save the cost of purchasing, installing and maintaining the power source.

[0031] In the specific setting, a recovery device for collecting lubricating oil can be added to the bottom of the box body 1 and connected to the oil tank 4. A filter should also be set at the oil filling port 5 to prevent debris from wearing the worm wheel body 101 or the worm body 102.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A self-circulating lubrication device for an upper bearing of a worm gear reducer, comprising a housing (1), a worm body (102) rotatably connected to the housing (1), and a worm wheel body (101) disposed at the bottom of the worm body (102) and meshingly connected to the worm body (102), characterized in that: Also includes: A circulation unit (2) is provided on one side of a housing (1), and comprises a turntable (21) rotatably connected to the housing (1) and a swing rod (22) rotatably connected to the housing (1), wherein a limiting groove (24) is provided on the swing rod (22), and a limiting rod (23) adapted to the limiting groove (24) is provided on the turntable (21), wherein the limiting rod (23) is eccentrically provided, and a toothed ring is provided on the side of the swing rod (22) away from the limiting groove (24). (25), a rack (26) is slidably provided on the housing (1), the rack (26) and the toothed ring (25) are meshed and connected, a mounting plate (28) is fixedly connected to the rack (26), an oil tank (4) is provided on the mounting plate (28), an oil filling port (5) for adding lubricating oil is provided at the bottom of the oil tank (4), and the circulation unit (2) is used to make the oil filling port (5) reciprocate at the top of the worm body (102) so that the lubricating oil is evenly added to all parts of the worm body (102); A driving unit (3), comprising a first gear (33) rotatably connected to the housing (1) and a second gear (34) rotatably connected to the housing (1) and meshing with the first gear (33), wherein the second gear (34) is fixedly connected to the turntable (21), and the driving unit (3) is used to drive the circulation unit (2).

2. The self-circulating lubrication device for the upper bearing of the worm gear reducer according to claim 1, characterized in that: Both ends of the rack (26) are provided with a limit frame (27) fixedly connected to the box body (1) and adapted to the size of the rack (26), and the limit frame (27) is used to limit the rack (26).

3. The self-circulating lubrication device for the upper bearing of the worm gear reducer according to claim 2, characterized in that: A slider (29) having a T-shaped cross section is fixedly connected to one end of the mounting plate (28) away from the limiting frame (27); a slide groove (291) adapted to the size of the slider (29) is provided on the inner wall surface of the box body (1); the slider (29) and the slide groove (291) are used to keep the mounting plate (28) stable when moving.

4. The self-circulating lubrication device for the upper bearing of the worm gear reducer according to claim 3, characterized in that: The total length of the slide groove (291) is slightly greater than the length of the threaded end of the worm body (102) to ensure that all positions of the worm body (102) can be filled with lubricating oil by the oil filling port (5).

5. The self-circulating lubrication device for the upper bearing of the worm gear reducer according to claim 4, characterized in that: The drive unit (3) further comprises a first bevel gear (31) fixedly connected to the worm body (102) and a second bevel gear (32) rotatably connected to the housing (1) and meshingly connected to the first bevel gear (31), wherein the second bevel gear (32) is fixedly connected to the first gear (33) on a side away from the second bevel gear (32).

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