Mechanical pump oil supply structure for supplying oil to component to be lubricated on periphery of input shaft

Abstract

The mechanical pump oil supply structure comprises a mechanical oil pump and an oil suction pipe arranged between the bottom of an inner cavity of a speed reducer and the mechanical oil pump, a mechanical oil pump hole is formed in the inner side of a front shell of the speed reducer on the periphery of an input shaft hole, and an annular inner rotor of the mechanical oil pump is sleeved on the input shaft. One end of the output oil channel is communicated with a mechanical oil pump, and the other end of the output oil channel is communicated with a target lubricating piece on the periphery of the input shaft. The directional lubrication device has the advantages that sufficient and stable directional lubrication can be carried out on the needle bearing on the periphery of the input shaft and the clutch friction plate which cannot be lubricated through splashing lubrication and drainage of a flow channel on the inner wall of the shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mechanical pump oil supply structure to the input shaft periphery component to be lubricated oil supply belongs to the retarder lubrication technical field. BACKGROUND

[0002] In the retarder, the gear and bearing generally adopt splash lubrication, the intermeshing gear is installed in the retarder inner chamber, on the one hand, the gear bottom generally soaks in the lubricating oil, can directly play the lubricating effect, on the other hand, the gear agitates the splash of lubricating oil, after impacting the shell wall, splashes in all directions, most of them will hit the gear, or fall on the gear, thereby lubricating the gear. For the bearing, the oil guide rib is designed around the bearing mounting hole of the shell, after the splash of the lubricating oil agitated by the gear in the retarder inner chamber bottom is guided to the bottom of the bearing mounting hole, the corresponding bearing is splash lubricated.

[0003] For the lubrication of the roller bearing installed between the gear and its input shaft and the clutch friction plate on the inner hub outer periphery of the input bearing, the splash of the lubricating oil cannot meet the lubrication requirement. Because the roller bearing and the clutch friction plate are not directly exposed in the retarder inner chamber, also not on the mounting shell, neither directly accept a large amount of splash lubricating oil, nor guide the oil supply by opening the oil channel on the inner wall of the shell. SUMMARY

[0004] The technical problem to be solved by the utility model is: how to implement the oil supply to the roller bearing arranged between the gear and its input shaft and the clutch friction plate on the inner hub outer periphery of the input bearing.

[0005] In view of the above problems, the technical solution provided by the utility model is:

[0006] A mechanical pump oil supply structure to the input shaft periphery component to be lubricated, comprising a mechanical oil pump and an oil suction pipe arranged between the retarder inner chamber bottom and the mechanical oil pump, an input shaft hole outer periphery retarder front shell inner side is provided with a mechanical oil pump hole, the annular inner rotor of the mechanical oil pump is sleeved on the input shaft and rotates with the input shaft, an output oil channel with one end communicating with the mechanical oil pump and the other end communicating with the input shaft outer periphery target lubricating part is arranged on the input shaft.

[0007] The output oil channel comprises a plurality of initial section sub-oil channels, a middle section total oil channel and a plurality of final section sub-oil channels.

[0008] The middle section total oil channel is arranged on the axis of the input shaft, the initial end port of the plurality of initial section sub-oil channels is located on the outer periphery surface adjacent to the annular inner rotor of the input shaft, each initial section sub-oil channel extends from the respective initial end port to the middle section total oil channel, and the initial end port of the final section sub-oil channel is located on the inner wall of the middle section total oil channel, and the terminal end port extends radially outward to the target lubricating position.

[0009] The opening of the middle section total oil channel is located in the spline hole of the input shaft connected with the motor shaft, and an oil plug is arranged at the opening of the middle section total oil channel.

[0010] The oil suction pipe is fixed in the inner wall of the front housing of the speed reducer by bolts, and the rear port thereof is communicated with the oil inlet hole arranged on the annular outer sleeve of the mechanical oil pump. Advantageous effects

[0011] 1. The pin roller bearing and the clutch friction plate on the outer periphery of the input shaft, which cannot be lubricated by splash lubrication and the flow channel of the inner wall of the housing, can be implemented with sufficient and stable directional lubrication.

[0012] 2. The structure is simple, and the position of the mechanical oil pump is scientific and reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The schematic view of the position of the mechanical oil pump arranged on the inner side of the front housing is shown in the figure.

[0014] Figure 2 The schematic view of the partial section of the input shaft is shown in the figure.

[0015] Figure 3 The schematic view of the radial section of the mechanical oil pump and the input shaft is shown in the figure.

[0016] Figure 4 The schematic view of the axial full section of the input shaft is shown in the figure.

[0017] In the figure: 1, mechanical oil pump; 101, annular inner rotor; 102, annular outer sleeve; 2, oil suction pipe; 3, output oil channel; 301, initial section oil distribution channel; 302, middle section total oil channel; 3021, oil plug; 303, final section oil distribution channel; 4, bolt; 5, input shaft; 501, spline hole; 6, front housing of the speed reducer. DETAILED DESCRIPTION

[0018] The utility model will be further described in combination with the drawings as follows:

[0019] As Figure 1As shown in Fig. 4, a mechanical pump oil supply structure for supplying oil to the periphery of the input shaft to be lubricated components, comprising a mechanical oil pump 1 and an oil suction pipe 2 arranged between the bottom of the reducer inner cavity and the mechanical oil pump 1, a mechanical oil pump hole is arranged on the inner side of the reducer front shell 6 on the periphery of the input shaft hole, the annular inner rotor 101 of the mechanical oil pump 1 is sleeved on the input shaft 5 and rotates with the input shaft 5, and the output oil channel 3 is arranged on the input shaft 5 and communicates with the mechanical oil pump 1 at one end and the periphery of the input shaft 5 to be lubricated components at the other end. Under working conditions, the input shaft 5 drives the mechanical oil pump 1 to rotate, and the lubricating oil at the bottom of the reducer inner cavity is delivered to the components to be lubricated on the periphery of the input shaft 5 by the mechanical oil pump 1 through the oil suction pipe 2 and the output oil channel 3, thereby realizing directional oil supply to the needle bearing on the periphery of the input shaft 5 and the clutch friction plate on the inner hub, and ensuring stable and sufficient oil supply to the components to be lubricated.

[0020] The output oil channel 3 comprises a plurality of initial section oil channels 301, a middle section total oil channel 302 and a plurality of final section oil channels 303. The middle section total oil channel 302 is arranged on the axis of the input shaft 5; the initial end ports of the plurality of initial section oil channels 301 are located on the outer periphery surface adjacent to the annular inner rotor 101 of the input shaft 5, each initial section oil channel 301 extends radially and centripetally from the initial end port thereof to communicate with the middle section total oil channel 302; and the initial end ports of the final section oil channels 303 are located on the inner wall of the middle section total oil channel 302, and the terminal end ports thereof extend radially and outwardly to communicate with the target lubrication position. In this way, the lubricating oil entering the mechanical oil pump 1 is directed to the target lubrication position.

[0021] In order to facilitate the drilling of the middle section total oil channel 302 on the axis of the input shaft, the opening of the middle section total oil channel 302 is located in the spline hole 501 of the input shaft 5 connected to the motor shaft, and an oil plug 3021 is arranged at the opening of the middle section total oil channel 302 to close the opening of the middle section total oil channel 302.

[0022] The oil suction pipe 2 is fixed to the inner wall of the reducer front shell 6 by a bolt 4, and the rear port thereof communicates with the oil inlet hole arranged on the annular outer sleeve 102 of the mechanical oil pump 1.

[0023] The above embodiments are only used for more clearly describing the present utility model, and cannot be regarded as limiting the protection scope covered by the present utility model, and any equivalent modification shall be regarded as falling within the protection scope covered by the present utility model.

Claims

1. A mechanical pump oil supply structure for supplying oil to a component to be lubricated in the outer periphery of an input shaft, comprising a mechanical oil pump (1) and a suction pipe (2) provided between the mechanical oil pump (1) and the bottom of the inner cavity of a reduction gear, characterized in that: In the input shaft hole outer periphery reducer front shell (6) inside, be equipped with mechanical oil pump hole, mechanical oil pump (1) annular inner rotor (101) suit in input shaft (5) on, with input shaft (5) rotation, the input shaft (5) is equipped with one end communicates mechanical oil pump (1), the other end communicates input shaft (5) outer periphery target lubrication spare output oil channel (3).

2. The mechanical pump oil supply structure for supplying oil to components to be oiled around the outer periphery of the input shaft according to claim 1, characterized in that: The output oil channel (3) comprises a plurality of initial section oil distribution channels (301), a middle section total oil channel (302) and a plurality of final section oil distribution channels (303).

3. The mechanical pump oil supply structure for supplying oil to components to be oiled around the outer periphery of the input shaft according to claim 2, characterized in that: The middle section total oil channel (302) is arranged on the axis of the input shaft (5), the initial end port of the plurality of initial section oil distribution channels (301) is located on the outer periphery surface of the input shaft (5) adjacent to the annular inner rotor (101), each initial section oil distribution channel (301) extends from the respective initial end port to the middle section total oil channel (302), and the initial end port of the final section oil distribution channel (303) is located on the inner wall of the middle section total oil channel (302), and the terminal end port extends radially outward to communicate with the target lubrication site.

4. The mechanical pump oil supply structure for supplying oil to components to be oiled around the outer periphery of the input shaft according to claim 3, characterized in that: The opening of the middle section total oil channel (302) is located in the spline hole (501) of the input shaft (5) connected to the motor shaft, and an oil plug (3021) is arranged at the opening of the middle section total oil channel (302).

5. The mechanical pump oil supply structure for supplying oil to components to be oiled around the outer periphery of an input shaft according to claim 1, characterized in that: The oil suction pipe (2) is fixed to the inner wall of the reducer front shell (6) by a bolt (4), and the rear port communicates with the oil inlet hole arranged on the annular outer sleeve of the mechanical oil pump (1).

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