A new type of cutting reducer lubrication system

Abstract

This invention relates to the field of speed reducer technology and provides a novel lubrication system for a cutting speed reducer. The system includes a cutting speed reducer, internal lubrication channels, and external piping. The internal lubrication channels include a forced lubrication channel, comprising a central oil sump, a filter, an oil pump inlet pipe, a gear oil pump, an oil pump outlet pipe, oil supply holes for the machine body, oil supply holes for the frame, oil return holes for the frame, oil return holes for the machine body, and a lubricating oil output point. This invention solves the problems of insufficient lubrication and cooling of gears and bearings caused by gear oil pump damage and unreasonable internal piping design, effectively improving the reliability of key components such as gears and bearings in the speed reducer, thereby ensuring that the cutting speed reducer can operate efficiently for extended periods.

Description

Technical Field

[0001] This invention relates to the field of speed reducer technology, and more particularly to a novel lubrication system for a cutting speed reducer. Background Technology

[0002] The cutting reducer of a horizontal shaft tunneling machine is an important piece of equipment used in coal mine roadway excavation. As the main cutting transmission component of the tunneling machine, the quality of the cutting reducer plays a crucial role in coal mining. At the same time, the lubrication pipeline structure inside the tunneling machine reducer affects the lifespan of key components such as gears and bearings, playing an extremely important role.

[0003] Currently, the gear pumps in the lubrication systems of conventional cutting reducers on the market often fail, and their internal piping design is unreasonable, resulting in a high failure rate of cutting reducers and inconvenient maintenance, which affects the construction period and causes significant losses. Summary of the Invention

[0004] In response to the aforementioned technical problems, a novel lubrication system for a cutting speed reducer is provided.

[0005] The technical means employed in this invention are as follows:

[0006] A novel lubrication system for a cutting reducer includes a cutting reducer; the cutting reducer includes a frame, a central body, a first planetary carrier, a bearing housing, a second planetary carrier, a self-aligning bearing, and a positioning sleeve; the central body is fixedly installed in the middle of the frame, and an input shaft and a splined shaft are rotatably mounted inside the central body, the input shaft driving the splined shaft to rotate; the first planetary carrier is fixedly installed on one side of the central body; the bearing housing is fixedly installed on the side of the first planetary carrier near the central body and fixedly mounted on the central body, the bearing housing supporting the splined shaft; the second... One end of the planetary carrier is rotatably mounted on the central body, and the other end of the second planetary carrier is rotatably mounted on the end of the frame; the self-aligning bearing is located between the end of the second planetary carrier and the frame; the positioning sleeve is coaxially sleeved on the second planetary carrier, and the positioning sleeve contacts the side of the self-aligning bearing closest to the central body; it also includes an internal lubrication passage and an external pipeline device, the internal lubrication passage including a forced lubrication passage; the forced lubrication passage includes a central body oil sump, a filter, an oil pump inlet pipe, a gear oil pump, an oil pump outlet pipe, a central body oil supply port, a frame oil supply port, and a frame oil return port. The machine body includes an oil return hole and a lubricating oil output point; the middle machine body oil sump is located within the cavity of the middle machine body; the input end of the filter is located within the middle machine body oil sump; the input end of the oil pump inlet pipe is connected to the output end of the filter; the gear oil pump is coaxial and fixedly mounted on the input shaft, and its input end is connected to the output end of the oil pump inlet pipe; the input end of the oil pump outlet pipe is connected to the output end of the gear oil pump; the machine body oil supply hole is located within the middle machine body, and its input end is connected to the output end of the oil pump outlet pipe; the frame oil supply hole is... The oil supply port of the frame is located within the frame. The input end of the oil supply port of the frame is connected to the output end of the oil supply port of the machine body, and the output end of the oil supply port of the frame is connected to the input end of the external pipeline device. The oil return port of the frame is located within the frame, and the input end of the oil return port of the frame is connected to the output end of the oil return port of the frame. The lubricating oil output point is located at the position in the middle of the machine body that needs to be lubricated, and the lubricating oil output point is connected to the output end of the oil return port of the machine body.

[0007] Furthermore, the internal lubrication path also includes an oil sump oil passage, which includes a planetary system oil passage; the planetary system oil passage includes a first planetary system oil hole, a second planetary system oil hole, a third planetary system oil hole, and a planetary system oil sump; the first planetary system oil hole is located in the middle body, the second planetary system oil hole is located on the bearing housing, the third planetary system oil hole is located on the first planet carrier, and the planetary system oil sump is located in the second planet carrier; one end of the first planetary system oil hole is connected to the middle body oil sump, and the other end of the first planetary system oil hole is connected to the planetary system oil sump; one end of the second planetary system oil hole is connected to the middle body oil sump, one end of the third planetary system oil hole is connected to the other end of the second planetary system oil hole, and the other end of the third planetary system oil hole is connected to the planetary system oil sump.

[0008] Furthermore, the oil sump oil passage also includes a self-aligning bearing oil passage; the self-aligning bearing oil passage includes a self-aligning bearing oil hole, an annular groove, and a radial oil hole; the self-aligning bearing oil hole is opened in the planetary gear mounting hole of the second planetary carrier, and the annular groove and the radial oil hole are both opened at the position of the positioning sleeve directly opposite the self-aligning bearing oil hole; one end of the self-aligning bearing oil hole is connected to the planetary system oil sump, the annular groove is connected to the other end of the self-aligning bearing oil hole, one end of the radial oil hole is connected to the annular groove, and the other end of the radial oil hole is connected to the cavity where the self-aligning bearing is located.

[0009] Furthermore, it also includes a venting channel; the venting channel includes a vent, a screw plug, and a vent cap; one end of the vent is opened at the highest point of the cavity of the middle body, and the other end of the vent is located at the upper part of the rear end of the middle body; the vent includes a processing hole and a countersunk hole; the screw plug is plugged in the processing hole; the vent cap is fixedly installed in the countersunk hole.

[0010] Furthermore, the external piping device includes an external filter, a heater, and a cooler; the input end of the external filter is the input end of the external piping device; the input end of the heater is connected to the output end of the external filter; the input end of the cooler is connected to the output end of the heater, and the output end of the cooler is the output end of the external piping device.

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

[0012] 1. In this invention, the lubricating oil in the oil sump of the machine body is filtered and then enters the oil pump inlet pipe. The lubricating oil in the oil pump inlet pipe is pumped into the oil pump outlet pipe by the gear oil pump. The lubricating oil in the oil pump outlet pipe then passes through the machine body oil supply hole and the frame oil supply hole sequentially into the external piping system. After filtering, heating, or cooling the lubricating oil, the external piping system outputs the lubricating oil to the frame return oil hole. The lubricating oil in the frame return oil hole reaches the lubricating oil output point through the machine body return oil hole, lubricating the areas of the machine body that require lubrication. This invention solves the problems of insufficient lubrication and cooling of gears and bearings caused by gear oil pump damage and unreasonable internal piping design, effectively improving the reliability of key components such as gears and bearings in the reducer, thereby ensuring that the cutting reducer can operate efficiently for a long time.

[0013] 2. In this invention, the lubricating oil in the middle body oil sump can enter the planetary system oil sump through the first planetary system oil hole and then sequentially through the second and third planetary system oil holes. During the above process, the lubricating oil can lubricate the components of the first planetary carrier and the second planetary carrier, which can effectively improve the reliability of the components of the first planetary carrier and the second planetary carrier, and further ensure that the cutting reducer can operate efficiently for a long time.

[0014] 3. In this invention, the lubricating oil in the planetary system oil sump enters the cavity where the self-aligning bearing is located through the self-aligning bearing oil hole, the annular groove and the radial oil hole in sequence, thereby lubricating the self-aligning bearing and further ensuring that the cutting reducer can operate efficiently for a long time.

[0015] 4. In this invention, the vent is located at the highest point of the cavity of the middle body, which minimizes the risk of oil leakage from the vent. The vent cap is installed in the countersunk hole at the upper rear end of the middle body, which is safer, cleaner and has a better ventilation effect compared to the conventional installation at the front cutting head.

[0016] 5. In this invention, the external piping device includes an external filter, a heater, and a cooler. The external filter can filter the lubricating oil, the heater can heat the lubricating oil, and the cooler can cool the lubricating oil. The external piping device in this invention can ensure the cleanliness and constant temperature of the lubricating oil. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an overall structural diagram of a lubrication system for a novel cutting reducer according to Embodiment 1 of the present invention;

[0019] Figure 2 This is an overall structural diagram of the forced lubrication orifice in Embodiment 1 of the present invention;

[0020] Figure 3 This is an overall structural diagram of the oil passage of the planetary system in Embodiment 1 of the present invention;

[0021] Figure 4 This is an overall structural diagram of the oil passage of the self-aligning bearing in Embodiment 1 of the present invention;

[0022] Figure 5 This is an overall structural diagram of the venting holes in Embodiment 1 of the present invention;

[0023] Figure 6 This is an overall structural diagram of the external piping device in Embodiment 1 of the present invention;

[0024] In the diagram: 1-Frame; 2-Middle body; 3-First planetary carrier; 4-Bearing housing; 5-Second planetary carrier; 6-Self-aligning bearing; 7-Positioning sleeve; 8-Forced lubrication passage; 9-Planetary system oil passage; 10-Self-aligning bearing oil passage; 11-Ventilation passage; 12-Planetary gear; 13-Oil plug; 14-First connecting pipe; 15-Second connecting pipe; 16-Input shaft; 17-First gear; 18-External piping device; 801-Middle body oil sump; 802-Filter; 803-Oil pump inlet pipe; 804-Gear oil pump; 805-Oil pump outlet pipe; 80 6-Main body oil supply hole; 807-Frame oil supply hole; 808-Frame oil return hole; 809-Main body oil return hole; 810-Lubricating oil output point; 901-First planetary system oil hole; 902-Second planetary system oil hole; 903-Third planetary system oil hole; 904-Planetary system oil sump; 1001-Self-aligning bearing oil hole; 1002-Annular groove; 1003-Radial oil hole; 1101-Vent hole; 1102-Plug; 1103-Vent cap; 1801-External filter; 1802-Heater; 1803-Cooler. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0032] Example 1:

[0033] like Figure 1 , Figure 2 and Figure 6As shown, a novel lubrication system for a cutting reducer includes a cutting reducer; the cutting reducer includes a frame 1, a central body 2, a first planetary carrier 3, a bearing housing 4, a second planetary carrier 5, a self-aligning bearing 6, and a positioning sleeve 7; the central body 2 is fixedly installed in the middle of the frame 1, and an input shaft 16 and a splined shaft are rotatably installed inside the central body 2, the input shaft 16 driving the splined shaft to rotate; the first planetary carrier 3 is fixedly installed on one side of the central body 2; the bearing housing 4 is fixedly installed on the side of the first planetary carrier 3 near the central body 2 and is fixedly installed on the central body 2, the bearing housing 4 supporting the splined shaft; one end of the second planetary carrier 5 is rotatably installed on the central body. 2. The other end of the second planetary carrier 5 is rotatably mounted on the end of the frame 1; the self-aligning bearing 6 is located between the end of the second planetary carrier 5 and the end of the frame 1; the positioning sleeve 7 is coaxially sleeved on the second planetary carrier 5, and the positioning sleeve 7 contacts the side of the self-aligning bearing 6 near the middle body 2; it also includes an internal lubrication channel and an external pipeline device 18, the internal lubrication channel including a forced lubrication channel 8; the forced lubrication channel 8 includes a middle body oil sump 801, a filter 802, an oil pump inlet pipe 803, a gear oil pump 804, an oil pump outlet pipe 805, a body oil supply hole 806, a frame oil supply hole 807, a frame oil return hole 808, a body oil return hole 809, and a lubrication... Oil output point 810; the oil sump 801 of the intermediate body is located inside the cavity of the intermediate body 2; the input end of the filter 802 is located inside the oil sump 801 of the intermediate body; the input end of the oil pump inlet pipe 803 is connected to the output end of the filter 802; the gear oil pump 804 is coaxially and fixedly mounted on the input shaft 16, and the input end of the gear oil pump 804 is connected to the output end of the oil pump inlet pipe 803; the input end of the oil pump outlet pipe 805 is connected to the output end of the gear oil pump 804; the oil supply hole 806 of the machine body is opened inside the intermediate body 2, and the input end of the oil supply hole 806 of the machine body is connected to the output end of the oil pump outlet pipe 805; the oil supply hole 807 of the frame is opened in... Inside the frame 1, the input end of the frame oil supply hole 807 is connected to the output end of the body oil supply hole 806, and the output end of the frame oil supply hole 807 is connected to the input end of the external pipeline device 18; the frame oil return hole 808 is opened inside the frame 1, and the input end of the frame oil return hole 808 is connected to the output end of the external pipeline device 18; the body oil return hole 809 is opened inside the middle body 2, and the input end of the body oil return hole 809 is connected to the output end of the frame oil return hole 808; the lubricating oil output point 810 is set at the location in the middle body 2 that needs to be lubricated, and the lubricating oil output point 810 is connected to the output end of the body oil return hole 809.

[0034] Specifically, the first planetary carrier 3, the second planetary carrier 5, the self-aligning bearing 6, and the positioning sleeve 7 are all provided in twos and are symmetrical about the central body 2.

[0035] Specifically, a first gear 17 is coaxially and fixedly mounted on the input shaft 16. The gear oil pump 804 is connected to the first gear 17 via a spline or coupling on its central shaft. This design simplifies the structure and provides a degree of floating, significantly reducing the impact of assembly vibrations of the input shaft 16 on the gear oil pump 804. In the prior art, the input type of the gear oil pump 804 is either a direct connection between the gear pump and the input shaft 16 or a connection between the gear pump and a first-stage pinion via a spline sleeve, which is less effective.

[0036] Specifically, in this embodiment, the forced lubrication orifice 8 is arranged in various parts of the machine body through oil plugs 13. The structure is simple, easy to process and assemble, and the oil passage is unobstructed and targeted, which can ensure the lubrication and cooling effect. Compared with the oil passage arrangement in the prior art, it is clearer.

[0037] In addition, the oil supply port 806 of the machine body and the oil supply port 807 of the machine frame are connected together by the first connecting pipe 14, and the oil return port 808 of the machine frame and the oil return port 809 of the machine body are connected together by the second connecting pipe 15.

[0038] The lubricating oil in the oil sump of the machine body is filtered by a filter and then enters the oil pump inlet pipe. Under the action of the gear oil pump, the lubricating oil in the oil pump inlet pipe is pumped into the oil pump outlet pipe. The lubricating oil in the oil pump outlet pipe then enters the external pipeline device through the machine body oil supply hole and the frame oil supply hole in sequence. After filtering, heating or cooling the lubricating oil, the external pipeline device outputs the lubricating oil to the frame return oil hole. The lubricating oil in the frame return oil hole reaches the lubricating oil output point through the machine body return oil hole, lubricating the parts of the machine body that need lubrication.

[0039] In this embodiment, as Figure 3 As shown, the internal lubrication path further includes an oil sump oil passage, which includes a planetary system oil passage 9. The planetary system oil passage 9 includes a first planetary system oil hole 901, a second planetary system oil hole 902, a third planetary system oil hole 903, and a planetary system oil sump 904. The first planetary system oil hole 901 is located inside the middle body 2, the second planetary system oil hole 902 is located on the bearing seat 4, the third planetary system oil hole 903 is located on the first planetary carrier 3, and the planetary system oil sump 904 is located inside the second planetary carrier 5. One end of the first planetary system oil hole 901 is connected to the middle body oil sump 801, and the other end of the first planetary system oil hole 901 is connected to the planetary system oil sump 904. One end of the second planetary system oil hole 902 is connected to the middle body oil sump 801, one end of the third planetary system oil hole 903 is connected to the other end of the second planetary system oil hole 902, and the other end of the third planetary system oil hole 903 is connected to the planetary system oil sump 904.

[0040] The lubricating oil in the middle body oil sump can enter the planetary system oil sump in sequence through the second planetary system oil hole and the third planetary system oil hole. During the above process, the lubricating oil can lubricate the components of the first planetary carrier and the components of the second planetary carrier.

[0041] In this embodiment, as Figure 4 As shown, the oil sump oil passage also includes a self-aligning bearing oil passage 10; the self-aligning bearing oil passage 10 includes a self-aligning bearing oil hole 1001, an annular groove 1002, and a radial oil hole 1003; the self-aligning bearing oil hole 1001 is opened in the planetary gear 12 mounting hole of the second planetary carrier 5, and the annular groove 1002 and the radial oil hole 1003 are both opened at the position of the positioning sleeve 7 opposite to the self-aligning bearing oil hole 1001; one end of the self-aligning bearing oil hole 1001 is connected to the planetary system oil sump 904, the annular groove 1002 is connected to the other end of the self-aligning bearing oil hole 1001, one end of the radial oil hole 1003 is connected to the annular groove 1002, and the other end of the radial oil hole 1003 is connected to the cavity where the self-aligning bearing 6 is located.

[0042] Specifically, the planetary gear 12 rotates in coordination with the second planetary carrier 5 to revolve around the cutting reducer, stirring the lubricating oil in the planetary system oil sump 904 to flow away, so that the lubricating oil in the planetary system oil sump 904 can enter the cavity where the self-aligning bearing 6 is located through the oil passage 10 of the self-aligning bearing to achieve circulation.

[0043] The lubricating oil in the planetary system oil sump enters the cavity where the self-aligning bearing is located through the oil hole, annular groove and radial oil hole of the self-aligning bearing in sequence, so as to achieve lubrication of the self-aligning bearing.

[0044] In this embodiment, as Figure 5 As shown, it also includes a venting passage 11; the venting passage 11 includes a venting hole 1101, a screw plug 1102, and a venting cap 1103; one end of the venting hole 1101 is opened at the highest point of the cavity of the middle body 2, and the other end of the venting hole 1101 is located at the upper part of the rear end of the middle body 2; the venting hole 1101 includes a machining process hole and a countersunk hole; the screw plug 1102 is plugged in the machining process hole; the venting cap 1103 is fixedly installed in the countersunk hole.

[0045] Specifically, the vent 11 balances the internal and external pressures, assists the lubrication system, and ensures the normal operation of the reducer.

[0046] In this embodiment, as Figure 6As shown, the external piping device 18 includes an external filter 1801, a heater 1802, and a cooler 1803; the input end of the external filter 1801 is the input end of the external piping device 18; the input end of the heater 1802 is connected to the output end of the external filter 1801; the input end of the cooler 1803 is connected to the output end of the heater 1802, and the output end of the cooler 1803 is the output end of the external piping device 18.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel lubrication system for a cutting reducer, comprising a cutting reducer; The cutting reducer includes a frame (1), a middle body (2), a first planetary carrier (3), a bearing housing (4), a second planetary carrier (5), a self-aligning bearing (6), and a positioning sleeve (7). The intermediate body (2) is fixedly installed in the middle of the frame (1). An input shaft (16) and a spline shaft are rotatably installed inside the intermediate body (2). The input shaft (16) can drive the spline shaft to rotate. The first planetary carrier (3) is fixedly installed on one side of the intermediate body (2). The bearing seat (4) is fixedly installed on the side of the first planetary carrier (3) near the intermediate body (2) and fixedly installed on the intermediate body (2). The bearing seat (4) is used to support the spline shaft. One end of the second planetary carrier (5) is rotatably installed on the intermediate body (2), and the other end of the second planetary carrier (5) is rotatably installed on the end of the frame (1). The self-aligning bearing (6) is located between the second planetary carrier (5) and the end of the frame (1). The positioning sleeve (7) is coaxially sleeved on the second planetary carrier (5). The positioning sleeve (7) is in contact with the side of the self-aligning bearing (6) near the intermediate body (2). Its features are, It also includes an internal lubrication passage and an external piping device (18), wherein the internal lubrication passage includes a forced lubrication passage (8). The forced lubrication circuit (8) includes a central body oil sump (801), a filter (802), an oil pump inlet pipe (803), a gear oil pump (804), an oil pump outlet pipe (805), a body oil supply hole (806), a frame oil supply hole (807), a frame oil return hole (808), a body oil return hole (809), and a lubricating oil output point (810). The oil sump (801) of the middle body is located inside the cavity of the middle body (2); the input end of the filter (802) is located inside the oil sump (801); the input end of the oil pump inlet pipe (803) is connected to the output end of the filter (802); the gear oil pump (804) is coaxially and fixedly installed on the input shaft (16), and the input end of the gear oil pump (804) is connected to the output end of the oil pump inlet pipe (803); the input end of the oil pump outlet pipe (805) is connected to the output end of the gear oil pump (804); the oil supply hole (806) of the body is opened inside the middle body (2), and the input end of the oil supply hole (806) of the body is connected to the output end of the oil pump outlet pipe (805); the oil supply hole (807) of the frame is opened on the frame (1) Inside the frame (1), the input end of the frame oil supply hole (807) is connected to the output end of the body oil supply hole (806), and the output end of the frame oil supply hole (807) is connected to the input end of the external pipeline device (18); the frame return oil hole (808) is opened inside the frame (1), and the input end of the frame return oil hole (808) is connected to the output end of the external pipeline device (18); the body return oil hole (809) is opened inside the middle body (2), and the input end of the body return oil hole (809) is connected to the output end of the frame return oil hole (808); the lubricating oil output point (810) is set at the position of the middle body (2) that needs to be lubricated, and the lubricating oil output point (810) is connected to the output end of the body return oil hole (809); The internal lubrication passage also includes an oil sump oil passage, and the oil sump oil passage includes a self-aligning bearing oil passage (10). The self-aligning bearing oil passage (10) includes a self-aligning bearing oil hole (1001), an annular groove (1002), and a radial oil hole (1003). The self-aligning bearing oil hole (1001) is opened in the planetary gear (12) mounting hole of the second planetary carrier (5). The annular groove (1002) and the radial oil hole (1003) are both opened on the positioning sleeve (7) at the position opposite to the self-aligning bearing oil hole (1001). One end of the self-aligning bearing oil hole (1001) is connected to the planetary system oil sump (904). The annular groove (1002) is connected to the other end of the self-aligning bearing oil hole (1001). One end of the radial oil hole (1003) is connected to the annular groove (1002). The other end of the radial oil hole (1003) is connected to the cavity where the self-aligning bearing (6) is located.

2. The lubrication system for a novel cutting reducer according to claim 1, characterized in that, The oil tank oil passage also includes the planetary system oil passage (9). The planetary system oil passage (9) includes a first planetary system oil hole (901), a second planetary system oil hole (902), a third planetary system oil hole (903), and a planetary system oil pool (904). The first planetary system oil hole (901) is located inside the middle body (2), the second planetary system oil hole (902) is located on the bearing seat (4), the third planetary system oil hole (903) is located on the first planetary carrier (3), and the planetary system oil pool (904) is located inside the second planetary carrier (5). One end of the first planetary system oil hole (901) is connected to the middle body oil pool (801), and the other end of the first planetary system oil hole (901) is connected to the planetary system oil pool (904). One end of the second planetary system oil hole (902) is connected to the middle body oil pool (801), one end of the third planetary system oil hole (903) is connected to the other end of the second planetary system oil hole (902), and the other end of the third planetary system oil hole (903) is connected to the planetary system oil pool (904).

3. The lubrication system for a novel cutting reducer according to claim 1, characterized in that, It also includes ventilation holes (11); The ventilation channel (11) includes a ventilation hole (1101), a screw plug (1102), and a ventilation cap (1103). One end of the vent (1101) is located at the highest point of the cavity of the middle body (2), and the other end of the vent (1101) is located at the upper part of the rear end of the middle body (2). The vent (1101) includes a processing hole and a countersunk hole. The screw plug (1102) is inserted into the machining process hole; The vent cap (1103) is fixedly installed inside the countersunk hole.

4. The lubrication system for a novel cutting reducer according to claim 1, characterized in that, The external piping device (18) includes an external filter (1801), a heater (1802), and a cooler (1803). The input end of the external filter (1801) is the input end of the external pipeline device (18); the input end of the heater (1802) is connected to the output end of the external filter (1801); the input end of the cooler (1803) is connected to the output end of the heater (1802), and the output end of the cooler (1803) is the output end of the external pipeline device (18).

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