Lubricating device for speed reducer and speed reducer

Abstract

The utility model provides a lubricating device for a speed reducer (100), which is characterized in that the speed reducer comprises a cylinder body (101), a front gear set (102) arranged in the cylinder body (101) and a main gear set (103) coupled at the downstream of the front gear set (102); the lubricating device comprises: an oil transportation channel system (201); the oil conveying channel system (201) is configured to be capable of communicating lubricating oil in an oil bath located below the axis of a rotating shaft of the speed reducer (100) and receiving the lubricating oil to the oil conveying pump (202), and the oil conveying pump (202) conveys the received lubricating oil to the part, located above the axis of the rotating shaft, of the front gear set (102) through the oil conveying channel system (201).

Description

Technical Field

[0001] The present application relates to a lubricating device for a speed reducer. In addition, the present application also relates to a speed reducer. Background Art

[0002] The reducer can convert the high-speed and low-torque rotational motion of the prime mover into low-speed and high-torque rotational motion, which is often done through the main gear set in the reducer. In order to reduce the vibration and heat generated by the operation of the main gear set in the reducer, lubricating oil is needed to reduce vibration and dissipate heat for the gears.

[0003] A common operation in the prior art involves immersing the speed reducer in a lubricating oil bath. Often, only the main gear set portion below the rotating shaft of the speed reducer is completely immersed in the lubricating oil, while the main gear set portion located above the rotating shaft throws the lubricating oil to the main gear set portion above the rotating shaft through the splashing effect of the lubricating oil caused by the rotation of the gears.

[0004] There is a kind of reducer, which has a front gear set arranged on the front side / upstream side of the main gear set (towards the input shaft, that is, away from the output shaft). This is, for example, because it is more suitable for the case where an electric motor is used as a prime mover. Generally, electric motors have a higher output rotation speed than hydraulic motors. Therefore, for the actuator connected to the output end of the reducer, this front gear set is required to further adjust the high-speed rotation output by the electric motor to a rotation speed and torque suitable for the actuator. However, the lubrication devices and methods in the prior art are mainly designed for the main gear set, and cannot efficiently match the lubrication requirements of the front gear set.

[0005] In view of the above, it is desirable to provide a novel lubrication device to at least alleviate the above problems. Utility Model Content

[0006] The present application aims to provide a lubrication device which is advantageous in at least one aspect over the prior art.

[0007] To this end, the present application provides, in one aspect, a lubrication device for a reducer, characterized in that the reducer includes a cylinder body, a front gear set arranged inside the cylinder body, and a main gear set coupled downstream thereof; the lubrication device includes: an oil delivery channel system; and an oil delivery pump, wherein the oil delivery channel system is configured to connect and receive the lubricating oil in an oil bath located below the axis of the rotating shaft of the reducer to the oil delivery pump, and the oil delivery pump delivers the received lubricating oil to the portion of the front gear set located above the axis of the rotating shaft via the oil delivery channel system.

[0008] In a possible exemplary embodiment, the oil delivery channel system is shaped as a groove opened in a cylinder body of the reducer.

[0009] In a possible exemplary embodiment, the oil delivery channel system includes: a first oil delivery channel located below the axis of the rotating shaft, and a second oil delivery channel located above the axis of the rotating shaft, wherein the first oil delivery channel is configured to guide the lubricating oil from the front gear set to the oil delivery pump, and the second oil delivery channel is configured to guide the lubricating oil from the oil delivery pump to the front gear set.

[0010] In a possible exemplary embodiment, the first inlet of the first oil delivery passage is configured to be immersed in an oil bath for the reducer, and the first outlet of the first oil delivery passage is fluidly connected to a first position of the oil delivery pump, which is located below the axis of the rotating shaft.

[0011] In a possible exemplary embodiment, the second inlet of the second oil delivery passage is fluidly connected to the second position of the oil delivery pump, the second position is located above the axis of the rotating shaft, and the outlet of the second oil delivery passage is fluidly connected to the planetary gears and / or planetary gear bearings of the front gear set.

[0012] In a feasible exemplary embodiment, the oil pump is configured as an eccentric wheel with the input shaft of the reducer as the rotation center, and an oil storage chamber is arranged on the eccentric wheel. The oil storage chamber is configured to receive lubricating oil from the first oil delivery channel when moving to the first position and discharge the received lubricating oil to the second oil delivery channel when moving to the second position.

[0013] In a possible exemplary embodiment, the oil storage chamber includes a plurality of oil storage chambers, and the plurality of oil storage chambers are arranged to be evenly distributed along the circumference of the rotating shaft.

[0014] In a possible exemplary embodiment, along the direction from the first inlet to the first outlet, the first oil delivery channel sequentially includes a first section extending along the axial direction, a second section extending radially along the rotation axis, and a third section extending along the axial direction.

[0015] In a feasible exemplary embodiment, the lubrication device for the reducer also includes: a filter, wherein the second section extends radially outward from the cylinder to a third outlet, and the filter is arranged at the third outlet to intercept and / or collect residues and / or debris in the lubricating oil.

[0016] In addition, the present application provides a reducer in another aspect, characterized in that it includes: a lubricating device for the reducer as described above; and a cylinder body, a front gear set arranged inside the cylinder body, and a main gear set coupled downstream thereof, wherein the lubricating device for the reducer is configured to be able to lubricate the front gear set.

[0017] As can be seen from the above, the lubrication device disclosed in the present application can lubricate the front gear set in a targeted manner without adding another power device, that is, using the existing power source, thereby meeting the high requirements of the front output wheel set for the lubrication effect. In addition, the lubrication device is integrated in the reducer, which facilitates the matching of the reducer with the front gear set with other upstream and downstream devices without considering the need to connect a lubrication device to the reducer, which enhances space utilization and reduces the complexity of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A reducer according to an embodiment of the present application and a lubrication device for the reducer are shown, and an electric motor providing motive power is also shown.

[0019] Figure 2 Shows Figure 1 The invention discloses a reducer and further shows a lubricating device for the reducer.

[0020] Figure 3 The oil pump is shown from the perspective of Figure 1-2 Lubrication device shown. DETAILED DESCRIPTION

[0021] Some feasible implementations of the present application are described below with reference to the accompanying drawings. It should be noted that the drawings are not drawn to scale. Some details may be enlarged for clear display, and some unnecessary details are omitted.

[0022] like Figure 1-2 As shown, a lubrication device and a reducer according to an embodiment of the present application are shown.

[0023] The speed reducer 100 includes a cylinder (support shaft) 101, a front gear set 102 arranged inside the cylinder 101, and a main gear set 103 coupled to the front gear set 102. Specifically, the front gear set 102 is rotationally coupled to the input shaft 104 of the speed reducer on its upstream side and is rotationally coupled to the main gear set 103 on its downstream side; the main gear set 103 is rotationally coupled to the front gear set 102 on its upstream side and is rotationally coupled to the output shaft (not shown) of the speed reducer on its downstream side. In this way, the prime mover (e.g., an electric motor) located upstream of the speed reducer 100 sequentially reduces the speed and increases the torque through the front gear set 102 and the main gear set 103 through the input shaft 104, and then the output shaft transmits this low-speed, high-torque power to the corresponding actuator (not shown). The output rate of the electric motor is relatively fast, so such a speed reducer 100 including the front gear set 102 is often required. Of course, it can also be understood that the prime mover described in this application does not exclude other suitable power providing devices including hydraulic motors. The input shaft 104 and the output shaft are arranged in a colinear manner and can be referred to as rotating shafts in this application.

[0024] The front gear set 102 can be a set of planetary gear trains. The planetary gear train includes a sun gear, a planet carrier and a ring gear, wherein the sun gear is used as an input end, the planet carrier is fixed, and the ring gear is used as an output end. In this way, the high-speed torque of the prime mover can be efficiently reduced.

[0025] The lubrication device for the reducer 100 is configured in the reducer 100 and includes an oil delivery channel system 201 (such as Figure 1-2 As shown) and the oil pump 202 (especially as Figure 3 As shown). The oil delivery channel system 201 is configured to be able to communicate with the lubricating oil in the oil bath of the front gear set 102 located below the axis of the rotating shaft (input shaft 104) of the reducer 100 and receive it to the oil delivery pump 202, and the oil delivery pump 202 delivers the received lubricating oil to the part of the front gear set 102 located above the axis of the rotating shaft through the oil delivery channel system 201. In this way, the lubricating oil located below the axis of the rotating shaft can be carried to the part above the axis of the rotating shaft more effectively and efficiently, so as to more fully lubricate and dissipate heat for the front gear set 102.

[0026] The oil delivery channel system 201 can be arranged in the cylinder body 101 of the reducer 100. For example, the oil delivery channel system 201 can be formed as a groove opened in the cylinder body 101, such as Figure 1-2It is also understood that the oil delivery channel system 201 may also be an actual "physical" pipeline installed between the cylinder block 101 and the front gear set 102. Such a pipeline may be, for example, a rigid pipeline (the material of which may be stainless steel), or a flexible pipeline (the material of which may be rubber).

[0027] The oil delivery channel system 201 may include a first oil delivery channel 2011 located below the axis of the rotating shaft and a second oil delivery channel 2012 located above the axis of the rotating shaft.

[0028] The first inlet 1 of the first oil delivery channel 2011 is configured to be immersed in an oil bath for the reducer 100, and the first outlet 2 of the first oil delivery channel 2011 can be fluidically connected to the first position P1 (collection position) of the oil delivery pump 202, such as Figure 3 As shown. The first position P1 is positioned below the axis of the rotating shaft. The first oil delivery channel 2011 may include a first section 5, a second section 6 and a third section 7 in sequence along the direction from the first inlet 1 to the first outlet 2. The first section 5, the second section 6 and the third section 7 may be arranged end to end. The first section 5 may be arranged to extend (basically) along the axial direction. The second section 6 may be arranged to extend (basically) along the radial direction of the rotating shaft. The third section 7 may be arranged to extend (basically) along the axial direction. In this way, the lubricating oil can be more conveniently delivered from the first inlet 1 to the first outlet 2.

[0029] The second section 6 can extend radially outward (downward) out of the cylinder to the third outlet 10. A filter (e.g., a filter screen) can be provided at the third outlet to intercept and / or collect residues and / or debris in the lubricating oil. When the reducer is actually working, a plug is provided below the filter to close the third outlet; after the reducer has been working for a period of time, the reducer is turned off, the plug is removed, the filter is taken out for cleaning and reinstalled; if the filter is a disposable type, the old, used filter can also be directly discarded and a new filter can be installed. A sensor can also be arranged at the third outlet (e.g., adjacent to the filter). The sensor can monitor the amount of residue and / or debris intercepted and / or collected by the filter. This can be used, for example, to estimate the service life of the reducer 100.

[0030] The second inlet 3 of the second oil delivery channel 2012 is configured to be fluidically connected to the second position P2 (discharge position) of the oil delivery pump 202. Figure 3As shown. The second position P2 is different from the first position P1 and is positioned above the axis of the rotating shaft. For example, the second position P2 is substantially equal to or slightly lower than the upper edge of the front gear set 102. The outlet 4 of the second oil delivery channel 2012 is configured to be fluidically connected to the portion of the front gear set 102 located above the axis of the rotating shaft. The outlet 4 can be further configured to be close to the planetary gears 12 and / or the planetary gear bearings 13 of the front gear set 102, so that lubricating oil can be applied to the planetary gears 12 and / or the planetary gear bearings 13. For example, the outlet 4 can be configured to be opened to the pin 14, and through the slots and openings on the pin 14, the fluid is connected to the planetary gear bearings 13, and further connected to the planetary gear 12.

[0031] The second oil delivery channel 2012 may include a fourth section 8 and a fifth section 9. The fourth section 8 extends in the axial direction, and a portion of the fourth section 8 may be located in the planet carrier 11. The fifth section 9 may be located entirely in the planet carrier 11 and may have two components, radial and axial, respectively, along the axis of the rotating shaft. The fourth section 8 may be fluidically connected to the middle of the fifth section 9. Thus, the outlet of the fifth section 9 is the outlet 4.

[0032] It can also be understood that, in some cases, the second oil delivery channel 2012 may include only one section: the fourth section 8. In this case, the outlet of the fourth section 8 is the outlet 4.

[0033] like Figure 3 As shown, the oil delivery pump 202 can be configured as an eccentric wheel with the input shaft as the rotation center. The eccentric wheel is provided with an oil storage chamber 2021. The oil storage chamber 2021 is configured to receive lubricating oil from the first oil delivery channel 2011 when it moves to the first position P1 and to discharge the received lubricating oil to the second oil delivery channel 2012 when it moves to the second position P2.

[0034] The oil storage chamber 2021 may include a plurality of oil storage chambers 2021. In the case where there are a plurality of oil storage chambers 2021, the plurality of oil storage chambers 2021 may be arranged to be evenly distributed along the circumference of the rotation axis.

[0035] The present application also discloses a reducer, which comprises the lubrication device as described above.

[0036] The lubrication device disclosed herein is described for a front gear set. It can be understood that the lubrication device disclosed herein can also be used for a main gear set, and can also be used for a main gear set without a front gear set.

[0037] The "upstream" and / or "downstream" referred to herein are described relative to the manner of power transmission. The "inlet" and / or "outlet" referred to herein are described relative to the direction of fluid movement. The "axial", "radial", and / or "circumferential" referred to herein are relative to the rotating axis of the reducer.

[0038] As used herein, the term “comprising” is open ended and includes one or more stated features, elements, components, or functions, but does not preclude the presence or addition of one or more other features, elements, components, functions, or combinations thereof.

[0039] It is expressly intended that within the scope of the present application, the various aspects, embodiments, examples and alternatives listed in the preceding paragraphs, claims and / or in the following description and figures, and in particular the individual features thereof, may be used independently or in any combination. That is, all embodiments and / or features of any embodiment may be used in any manner and / or combination unless such features are incompatible. Applicants reserve the right to change any originally filed claims or to file any new claims accordingly, including amending any originally filed claim to be subordinate to and / or incorporate any features of any other claim, even though not originally claimed in this manner.

[0040] Although the present application is described herein with reference to specific embodiments, the scope of the present application is not limited to the details shown. Various modifications may be made to these details without departing from the basic principles of the present application.

Claims

1. A lubrication device for a reducer (100), characterized in that: The reducer comprises a cylinder (101), a front gear set (102) arranged inside the cylinder (101), and a main gear set (103) coupled downstream thereof; The lubrication device comprises: an oil transport channel system (201); and An oil delivery pump (202), wherein the oil delivery channel system (201) is configured to connect and receive lubricating oil in an oil bath located below the axis of the rotating shaft of the reducer (100) to the oil delivery pump (202), and the oil delivery pump (202) delivers the received lubricating oil to a portion of the front gear set (102) located above the axis of the rotating shaft via the oil delivery channel system (201).

2. The lubrication device for a speed reducer (100) according to claim 1, characterized in that: The oil delivery channel system (201) is formed as a groove opened in the cylinder body (101) of the reducer (100).

3. The lubrication device for a reducer (100) according to claim 2, characterized in that: The oil delivery channel system (201) comprises: a first oil delivery channel (2011) located below the axis of the rotating shaft, and a second oil delivery channel (2012) located above the axis of the rotating shaft. The first oil delivery channel (2011) is configured to guide lubricating oil from the front gear set (102) to the oil delivery pump (202), and the second oil delivery channel (2012) is configured to guide lubricating oil from the oil delivery pump (202) to the front gear set (102).

4. The lubrication device for a speed reducer (100) according to claim 3, characterized in that: The first inlet (1) of the first oil delivery channel (2011) is configured to be immersed in an oil bath for the reducer (100), and the first outlet (2) of the first oil delivery channel (2011) is fluidically connected to a first position (P1) of the oil delivery pump (202), wherein the first position (P1) is positioned below the axis of the rotating shaft.

5. The lubricating device for a speed reducer (100) according to claim 4, characterized in that: The second inlet (3) of the second oil delivery channel (2012) is fluidically connected to the second position (P2) of the oil delivery pump (202), and the second position (P2) is positioned above the axis of the rotating shaft, and the outlet (4) of the second oil delivery channel (2012) is fluidically connected to the planetary gear (12) and / or the planetary gear bearing (13) of the front gear set (102).

6. The lubricating device for a reducer (100) according to claim 5, characterized in that: The oil delivery pump (202) is configured as an eccentric wheel with the input shaft of the reducer as the rotation center, and an oil storage chamber (2021) is arranged on the eccentric wheel. The oil storage chamber (2021) is configured to receive lubricating oil from the first oil delivery channel (2011) when moving to the first position (P1) and to discharge the received lubricating oil to the second oil delivery channel (2012) when moving to the second position (P2).

7. The lubricating device for a speed reducer (100) according to claim 6, characterized in that: The oil storage chamber (2021) includes a plurality of oil storage chambers (2021), and the plurality of oil storage chambers (2021) are arranged to be evenly distributed along the circumference of the rotating shaft.

8. The lubricating device for a speed reducer (100) according to claim 7, characterized in that: Along the direction from the first inlet (1) to the first outlet (2), the first oil delivery channel (2011) sequentially includes a first section (5) extending along the axial direction, a second section (6) extending radially along the rotating shaft, and a third section (7) extending along the axial direction.

9. The lubricating device for a speed reducer (100) according to claim 8, characterized in that: Also includes: The filter comprises a second section (6) extending radially outward from the cylinder to a third outlet (10), wherein the filter is arranged at the third outlet (10) to intercept and / or collect residues and / or debris in the lubricating oil.

10. A reducer, characterized in that include: A lubricating device for a reducer (100) according to any one of claims 1 to 9; and A cylinder body (101), a front gear set (102) arranged inside the cylinder body (101), and a main gear set (103) coupled downstream thereof, wherein a lubricating device for a speed reducer (100) is configured to be able to lubricate the front gear set (102).

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