Hole lubricating structure used in speed reducer

Abstract

The hole channel lubricating structure used in the speed reducer comprises a box body internally provided with speed reduction gear assemblies, and the speed reduction gear assemblies comprise the first speed reduction gear assembly and the second speed reduction gear assembly; a first shaft sleeve is arranged on the first reduction gear assembly, a first ring groove is formed in the first shaft sleeve, and at least one first oil hole is formed in the first ring groove; a second shaft sleeve is arranged on the second reduction gear assembly, a second ring groove is formed in the second shaft sleeve, and at least one second oil hole is formed in the second ring groove; a first cavity used for containing a first shaft sleeve and a second cavity used for containing a second shaft sleeve are arranged in the box body, a first oil inlet is formed in the upper portion of the first cavity, the outer end of the first oil inlet is connected to an oil pipe, the second cavity is located on the lower portion of the first cavity, and a second oil inlet is formed between the first cavity and the second cavity. According to the hole channel lubricating structure used in the speed reducer, a certain gap is reserved between the shaft sleeve and the inner hole, holes are punched in the cylindrical surface of the shaft sleeve, the shaft sleeve does not need to be aligned with the hole channel, the shaft sleeve can be installed in the hole at any angle, the time for connecting an oil pipe is saved, and the phenomenon of oil spraying and deviation of the connecting pipe cannot occur after long-term use.

Description

Technical Field

[0001] The utility model belongs to the technical field of reducer lubrication structures, and in particular relates to a channel lubrication structure used in a reducer. Background Art

[0002] The reducer is a device widely used in mechanical transmission systems. It achieves high-speed input and low-speed high-torque output by matching gear sets of different sizes. The core function of this device is to reduce speed and increase torque to meet the needs of various mechanical equipment. Inside the reducer, the lubricating oil system plays a vital role. It not only reduces friction and wear between moving parts and prolongs the service life of mechanical parts, but also removes heat through circulation and plays a cooling role.

[0003] A box-type vertically mounted three-stage transmission reducer is a reducer commonly used in injection molding machines. In the prior art, this type of box-type reducer uses a pipe-type oil spraying method to lubricate the bearings inside. The pipe-type operation is cumbersome and time-consuming, and the pipe-type oil spraying is prone to deviation. Based on this, the present application further designs and improves the lubrication structure in this type of reducer. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the utility model provides a channel lubrication structure for a reducer, a certain gap is left between the shaft sleeve and the inner hole, and a hole is punched on the cylindrical surface of the shaft sleeve, the shaft sleeve does not need to be aligned with the channel, and can be installed in the hole at any angle. This method works reliably, saves the time of connecting the oil pipe, and the oil injection deviation phenomenon will not occur in the long-term use.

[0005] The utility model solves the problem through the following technical solutions.

[0006] A channel lubrication structure for a reducer, comprising a housing with a reduction gear assembly built therein, wherein the reduction gear assembly comprises a first reduction gear assembly and a second reduction gear assembly; the first reduction gear assembly is provided with a first shaft sleeve, the first shaft sleeve is provided with a first annular groove, and at least one first oil hole is provided in the first annular groove; the second reduction gear assembly is provided with a second shaft sleeve, the second shaft sleeve is provided with a second annular groove, and at least one second oil hole is provided in the second annular groove; the housing is provided with a first cavity for accommodating the first shaft sleeve and a second cavity for accommodating the second shaft sleeve, the upper part of the first cavity is provided with a first oil inlet, the outer end of the first oil inlet is connected to an oil pipe, the second cavity is located at the lower part of the first cavity, and a second oil inlet is provided between the first cavity and the second cavity.

[0007] In the present application, in this multi-stage transmission reducer, a channel-type lubrication structure is adopted, and through the structure of the first annular groove and the second annular groove, a certain gap is left between the first sleeve and the second sleeve and the inner wall of their respective cavities, and corresponding oil holes are provided in the annular grooves, so that during the assembly process, it can be installed at any angle. This method works reliably, saves the time of connecting the oil pipe, and there will be no deviation of the oil injection during long-term use. Specifically, in the present application, after the lubricating oil enters the first oil inlet from the oil pipe, it enters the first annular groove, and then enters the bearing of the first reduction gear assembly through the first oil hole in the first annular groove for lubrication. At the same time, the lubricating oil in the first annular groove flows downward, enters the second annular groove through the second oil inlet, and then enters the bearing of the second reduction gear assembly through the second oil hole for lubrication.

[0008] In a preferred embodiment, the first oil inlet corresponds to the position of the first annular groove, and the upper and lower ends of the second oil inlet correspond to the first annular groove and the second annular groove respectively, ensuring that the oil path is unobstructed, and they can correspond after being assembled in place, which is convenient for assembly.

[0009] In a preferred embodiment, first sleeves are provided at both ends of the first reduction gear assembly, and two corresponding first cavities are provided on the housing. The overall structure is stable, and the axial rotation of the first reduction gear assembly is flexible after assembly, and the lubrication effect is good.

[0010] In a preferred embodiment, second sleeves are provided at both ends of the second reduction gear assembly, and two corresponding second cavities are provided on the housing. The overall structure is stable, and the axial rotation of the second reduction gear assembly is flexible after assembly, and the lubrication effect is good.

[0011] In a preferred embodiment, the reduction gear assembly also includes a third reduction gear assembly and an output shaft gear assembly arranged in a housing, the housing is provided with a third mounting cavity for assembling the bearing of the third reduction gear assembly and a fourth mounting cavity for assembling the bearing of the output shaft gear assembly, the third reduction gear assembly and the output shaft gear assembly may also be provided with a channel lubrication structure of the same structure as required to ensure good lubrication effect during operation and a compact overall assembly structure.

[0012] In a preferred embodiment, the first reduction gear assembly serves as an input shaft, an outer end of which is connected to an input device, and the input device may be a conventional drive motor.

[0013] In a preferred embodiment, a central oil hole is provided on the housing, and an oil outlet nozzle of an oil pipe is provided on the central oil hole. The oil passing through the central oil hole is used to lubricate the gear structure in the housing. Specifically, the lubricating oil enters the central oil hole through the oil outlet nozzle, and then drips from the central oil hole, just dripping on the gear part for lubrication.

[0014] In a preferred embodiment, a lubricating oil circulation assembly is provided on the outer wall of the casing, and the lubricating oil circulation assembly includes a circulating oil pipeline and a pump body. The oil pipeline is a part of the circulating oil pipeline and is located at the upper part of the casing. After the lubricating oil in the casing accumulates at the bottom, it is transported to the upper oil pipeline through the circulating oil pipeline and the pump body to circulate the lubricating oil.

[0015] Compared with the prior art, the utility model has the following beneficial effects: it provides a channel lubrication structure for a reducer, a certain gap is left between the shaft sleeve and the inner hole, and a hole is punched on the cylindrical surface of the shaft sleeve, the shaft sleeve does not need to be aligned with the channel, and can be installed in the hole at any angle, thus saving the time of connecting the oil pipe, and the phenomenon of oil injection deviation will not occur during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic diagram of the reducer in the utility model.

[0017] Figure 2 It is a cross-sectional view of the reducer in the utility model.

[0018] Figure 3 for Figure 2 Magnified view of area A in FIG.

[0019] Figure 4 for Figure 3 Magnified view of the A1 region in .

[0020] Figure 5 It is a cross-sectional view of the box body in the present utility model.

[0021] Figure 6 It is a three-dimensional diagram of the box body in the utility model.

[0022] Figure 7 It is a three-dimensional diagram of the reducer with the housing omitted in the present invention.

[0023] Figure 8 for Figure 7 Magnified view of area B in FIG. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] In the following embodiments, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0027] See also Figures 1 to 8 The channel lubrication structure for a reducer in the utility model includes a housing 2 with a reduction gear assembly built therein, wherein the reduction gear assembly includes a first reduction gear assembly 11 and a second reduction gear assembly 21; the first reduction gear assembly 11 is provided with a first shaft sleeve 112, the first shaft sleeve 112 is provided with a first annular groove 1126, and at least one first oil hole 1121 is provided in the first annular groove 1126; the second reduction gear assembly 21 is provided with a second shaft sleeve 212, the second shaft sleeve 212 is provided with a A second annular groove 2126 is provided with at least one second oil hole 2121; a first cavity 264 for accommodating the first shaft sleeve 112 and a second cavity 265 for accommodating the second shaft sleeve 212 are provided in the housing 2, a first oil inlet 261 is provided at the upper portion of the first cavity 264, an outer end of the first oil inlet 261 is connected to the oil pipe 31, the second cavity 265 is located at the lower portion of the first cavity 264, and a second oil inlet 262 is provided between the first cavity 264 and the second cavity 265.

[0028] Specifically, in the present application, the first oil inlet 261 corresponds to the position of the first annular groove 1126, and the upper and lower ends of the second oil inlet 262 correspond to the first annular groove 1126 and the second annular groove 2126, respectively, to ensure that the oil path is unobstructed, and can correspond after being assembled in place, and the assembly is convenient. In addition, in the present application, both ends of the first reduction gear assembly 11 are provided with a first shaft sleeve 112, and the housing 2 is provided with two corresponding first cavities 264, and both ends of the second reduction gear assembly 21 are provided with a second shaft sleeve 212, and the housing 2 is provided with two corresponding second cavities 265, the overall structure is stable, and the axial rotation of the second reduction gear assembly 21 is flexible after assembly, and the lubrication effect is good.

[0029] In addition, further, in the present application, the reduction gear assembly also includes a third reduction gear assembly 22 and an output shaft gear assembly 4 arranged in the housing 2, and the housing 2 is provided with a third mounting cavity 266 for assembling the bearing of the third reduction gear assembly 22 and a fourth mounting cavity 267 for assembling the bearing of the output shaft gear assembly 4. The third reduction gear assembly 22 and the output shaft gear assembly 4 can also be provided with a channel lubrication structure of the same structure as required to ensure good lubrication effect during operation and a compact overall assembly structure. The first reduction gear assembly 11 is used as an input shaft, and its outer end is connected to the input device 1, and the input device 1 can be a conventional drive motor.

[0030] As can be seen from the accompanying drawings, in the present application, a central oil hole 263 is provided on the housing 2, and an oil outlet nozzle 311 of an oil pipe 31 is provided on the central oil hole 263. The oil passing through the central oil hole 263 is used to lubricate the gear structure in the housing 2. Specifically, the lubricating oil enters the central oil hole 263 through the oil outlet nozzle 311, and then drips from the central oil hole 263, just dripping on the gear part for lubrication.

[0031] It can also be seen from the accompanying drawings that in the present application, a lubricating oil circulation assembly 3 is provided on the outer wall of the housing 2, and the lubricating oil circulation assembly 3 includes a circulating oil pipeline and a pump body. The oil pipe 31 is a part of the circulating oil pipeline and is located at the upper part of the housing 2. After the lubricating oil in the housing 2 accumulates at the bottom, it is transported to the upper oil pipe 31 through the circulating oil pipeline and the pump body to circulate the lubricating oil.

[0032] It can be seen from the above description that the reducer of the present application adopts a channel-type lubrication structure, and through the structure of the first annular groove 1126 and the second annular groove 2126, a certain gap is left between the first sleeve 112 and the second sleeve 212 and the inner wall of their respective cavities, and corresponding oil holes are provided in the annular grooves, so that during the assembly process, it can be installed at any angle. This method works reliably, saves the time of connecting the oil pipe, and there will be no deviation of the oil injection during long-term use. Specifically, in the present application, after the lubricating oil enters the first oil inlet 261 from the oil pipe 31, it enters the first annular groove 1126, and then enters the bearing of the first reduction gear assembly 11 through the first oil hole 1121 in the first annular groove 1126 for lubrication. At the same time, the lubricating oil in the first annular groove 1126 flows downward, enters the second annular groove 2126 through the second oil inlet 262, and then enters the bearing of the second reduction gear assembly 21 through the second oil hole 2121 for lubrication.

[0033] As described above, the utility model provides a channel lubrication structure for a reducer, a certain gap is left between the shaft sleeve and the inner hole, and a hole is punched on the cylindrical surface of the shaft sleeve, the shaft sleeve does not need to be aligned with the channel, and can be installed in the hole at any angle, which saves the time of connecting the oil pipe, and the oil injection will not deviate during long-term use.

[0034] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A channel lubrication structure for a reducer, comprising a housing (2) with a reduction gear assembly built therein, characterized in that: The reduction gear assembly comprises a first reduction gear assembly (11) and a second reduction gear assembly (21); The first reduction gear assembly (11) is provided with a first shaft sleeve (112), the first shaft sleeve (112) is provided with a first annular groove (1126), and at least one first oil hole (1121) is provided in the first annular groove (1126); The second reduction gear assembly (21) is provided with a second shaft sleeve (212), the second shaft sleeve (212) is provided with a second annular groove (2126), and at least one second oil hole (2121) is provided in the second annular groove (2126); The box body (2) is provided with a first cavity (264) for accommodating the first shaft sleeve (112) and a second cavity (265) for accommodating the second shaft sleeve (212); A first oil inlet (261) is provided at the upper portion of the first cavity (264), and an outer end of the first oil inlet (261) is connected to the oil pipe (31). The second cavity (265) is located at the lower portion of the first cavity (264), and a second oil inlet (262) is provided between the first cavity (264) and the second cavity (265).

2. The channel lubrication structure for a reducer according to claim 1, characterized in that: The first oil inlet (261) corresponds to the position of the first annular groove (1126), and the upper and lower ends of the second oil inlet (262) correspond to the first annular groove (1126) and the second annular groove (2126) respectively.

3. The channel lubrication structure for a reducer according to claim 2, characterized in that: Both ends of the first reduction gear assembly (11) are provided with a first shaft sleeve (112), and the box body (2) is provided with two corresponding first cavities (264).

4. The channel lubrication structure for a reducer according to claim 3, characterized in that: Both ends of the second reduction gear assembly (21) are provided with second shaft sleeves (212), and the box body (2) is provided with two corresponding second cavities (265).

5. The channel lubrication structure for a reducer according to claim 4, characterized in that: The reduction gear assembly further comprises a third reduction gear assembly (22) and an output shaft gear assembly (4) arranged in the housing (2); the housing (2) is provided with a third mounting cavity (266) for mounting a bearing of the third reduction gear assembly (22) and a fourth mounting cavity (267) for mounting a bearing of the output shaft gear assembly (4).

6. The channel lubrication structure for a reducer according to claim 4, characterized in that: The first reduction gear assembly (11) serves as an input shaft, and its outer end is connected to the input device (1).

7. The channel lubrication structure for a reducer according to any one of claims 1 to 6, characterized in that: The housing (2) is provided with a central oil hole (263), and the central oil hole (263) is provided with an oil outlet nozzle (311) of an oil pipe (31). The oil passing through the central oil hole (263) is used to lubricate the gear structure in the housing (2).

8. The channel lubrication structure for a reducer according to claim 7, characterized in that: A lubricating oil circulation assembly (3) is provided on the outer wall of the box body (2), the lubricating oil circulation assembly (3) comprising a circulating oil pipeline and a pump body, the oil pipe (31) being a part of the circulating oil pipeline and being located at the upper part of the box body (2).

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