Self-lubricating system of planetary gear reduction gearbox and box body of self-lubricating system

Abstract

The invention discloses a self-lubricating system of a planetary gear reduction gearbox and a box body of the self-lubricating system, and relates to the technical field of reduction gears.The self-lubricating system comprises a supporting frame, a gearbox, a first connecting plate, a connecting shell and an oil tank assembly; the lubricating assembly comprises a connecting pipe, a second spring and a rubber pad, the side, away from the first connecting plate, of an inner cavity of the connecting pipe is fixedly connected with a heat conduction block, the lower portion of the connecting pipe is located in an inner cavity of the connecting groove, the side, away from the first connecting plate, of the heat conduction block is attached to the inner wall of the connecting groove, and the side, close to the rubber pad, of the second spring is fixedly connected with the rubber pad. The lower part of the inner cavity of the connecting pipe is filled with oxygen, and then the oxygen expands after being heated and pushes a rubber pad to move towards a one-way valve III, so that lubricating oil conveyed to the upper part of the inner cavity of the connecting pipe can be pushed from the inner cavity of the connecting pipe into an inner cavity of the one-way valve III; and then lubricating oil is sprayed to the meshing position of the planetary gear and the inner cavity of the connecting shell through the oil outlet pipe, so that the tooth positions of the planetary gear and the inner gear ring can be lubricated.

Description

Technical Field

[0001] The invention relates to the technical field of reduction boxes, and in particular to a self-lubricating system of a planetary gear reduction box and a box body thereof. Background Art

[0002] Planetary gear reducer, also known as planetary reduction motor, is a power transmission mechanism. Its core is to use the speed converter of the gear to reduce the number of revolutions of the motor to the required number of revolutions while obtaining a larger torque. The design principle of this reduction mechanism is based on the concept of planets revolving around stars. The specific implementation method is to rotate three planetary gears around a sun gear to achieve the reduction function. Usually, the planetary reduction motor will have several pairs of gears of the same principle meshing to achieve the expected reduction effect. The accuracy level of the planetary gear reducer varies according to its level. The accuracy of the first-stage planetary reducer can be within 3 arc minutes, the accuracy of the second-stage planetary reducer is 3-5 arc minutes, and the accuracy of the third-stage planetary reducer is 5-8 arc minutes.

[0003] Although planetary gear reducers are widely praised in industrial applications for their excellent power transmission efficiency and precise deceleration performance, after long-term continuous operation, key components such as gears and bearings in their internal structure face many challenges. Among them, a particularly prominent and non-ignorable problem is the jamming phenomenon. The occurrence of jamming is often due to the interweaving influence of multiple factors, and insufficient lubrication is the core cause. When the planetary gear reducer is operating efficiently, the relative movement between the components will generate a large amount of frictional heat, which requires the lubrication system to continuously and stably provide an appropriate amount of lubricating oil to form a protective oil film, effectively reducing direct contact between parts, thereby reducing wear and maintaining smooth mechanical operation.

[0004] Chinese patent document CN214146433U discloses a self-heating planetary reduction box, including a motor, the output power shaft of the motor is fixedly mounted with the motor shaft through a coupling, a driven ring is movably mounted on the motor, a heat-dissipating gear ring is movably mounted on the driven ring, a gear ring is meshingly mounted on the heat-dissipating gear ring, a reducer housing is fixedly mounted on the gear ring, a bearing is movably sleeved on the reducer housing, an output shaft is movably sleeved in the bearing, a partition plate is movably sleeved in the heat-dissipating gear ring, and three reduction gears are movably mounted on both sides of the partition plate; however, the following defects still exist in the implementation process:

[0005] Although the device in the above document can drive the heat dissipation ring gear to rotate when the planetary reducer is running by setting the heat dissipation ring gear, and the heat dissipation ring gear can help the planetary reducer to automatically dissipate heat, so that the temperature of the planetary reducer will not be too high, thereby avoiding shutdown for heat dissipation and ensuring the normal operation of the planetary reducer, the device in the above document cannot allow the lubrication system to continuously and stably provide an appropriate amount of lubricating oil. Summary of the Invention

[0006] The object of the present invention is to provide a self-lubricating system for a planetary gear reduction box and its housing, so as to solve the problem in the above-mentioned background technology that the lubricating system cannot continuously and stably supply an appropriate amount of lubricating oil.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0008] A self-lubricating system for a planetary gear reduction box includes a support frame, a gear box, a first connecting plate, a connecting shell and an oil tank assembly; the upper part of the support frame is fixedly connected to the lower part of the gear box, the connecting shell is fixedly connected to the gear box through a plurality of bolts, the first connecting plate is fixedly connected to the connecting shell through a plurality of bolts, an internal gear ring is fixedly connected to the inner cavity of the connecting shell, a plurality of planetary gears are meshed and connected to the inner cavity of the internal gear ring, a plurality of planetary gears are jointly meshed and connected to a sun gear, a power output shaft is fixedly connected to the middle of the sun gear, and the plurality of planetary gears are fixedly connected to the power output shaft on the side far away from the first connecting plate. A second connecting plate is fixedly connected to the middle of the side of the first connecting plate close to the internal gear ring, a lubricating component is fixedly connected to the middle of the second connecting plate, there is a gap between the side of the second connecting plate close to the sun gear and the sun gear, a connecting groove is formed on the side of the sun gear close to the first connecting plate, the lubricating component includes a connecting pipe, a second spring and a rubber pad, a heat conducting block is fixedly connected to the side of the inner cavity of the connecting pipe far away from the first connecting plate, the lower part of the connecting pipe is located in the inner cavity of the connecting groove, the side of the heat conducting block far away from the first connecting plate is attached to the inner wall of the connecting groove, the side of the second spring close to the rubber pad is fixedly connected to the rubber pad, the side of the second spring far away from the rubber pad is fixedly connected to the middle of the connecting pipe, a check valve three is fixedly connected to the upper part of the connecting pipe, and the inner cavity of the connecting pipe is communicated with the inner cavity of the check valve three. An oil outlet pipe is fixedly connected to the side of the inner cavity of the check valve three close to the internal gear ring, and the lower part of the connecting pipe is filled with gas.

[0009] Adopting the above technical solution, in this solution, when the sun gear runs, heat will be generated, and then it will contact the inner wall of the connecting groove through the heat conducting block, so that the heat conducting block will conduct the heat into the inner cavity of the connecting pipe. Since oxygen is filled in the lower part of the inner cavity of the connecting pipe, the oxygen will expand when heated, and then it will push the rubber pad to move towards the direction of the check valve three, so that the lubricating oil transported to the upper part of the inner cavity of the connecting pipe can be pushed from the inner cavity of the connecting pipe into the inner cavity of the check valve three, and then the lubricating oil is sprayed to the meshing position between the planetary gear and the inner cavity of the connecting shell through the oil outlet pipe, so as to lubricate the tooth positions of the planetary gear and the internal gear ring.

[0010] A further improvement of the technical solution of the present invention is that an oil outlet groove one is formed in the lower part of the internal gear ring, an oil outlet groove two is formed in the lower part of the connecting shell, and the oil outlet groove one and the oil outlet groove two are adjacent in position.

[0011] With the above technical solution, in this solution, when lubricating oil is sprayed onto the teeth of the planetary gear and the inner gear ring cavity through the oil outlet pipe, some excess lubricating oil often falls onto the lower part of the inner cavity of the connection shell. Long-term accumulation will cause this lubricating oil to deteriorate in the inner cavity of the connection shell, thus affecting the normal use of the device. By providing an oil outlet groove 1 at the lower part of the inner gear ring, some lubricating oil located on the side far from the oil outlet groove 2 can flow into the oil outlet groove 2 through the inner cavity of the oil outlet groove 1, and then these excess lubricating oils are discharged from the inner cavity of the connection shell through the oil outlet groove 2, reducing the accumulation of a large amount of lubricating oil at the lower part of the inner cavity of the connection shell.

[0012] A further improvement of the technical solution of the present invention lies in that: the fuel tank assembly includes an oil delivery pipe 1 and an oil storage box. The lower end of the oil delivery pipe 1 is fixedly connected to the upper end of a check valve 3, and the inner cavity of the check valve 3 is communicated with the inner cavity of the oil delivery pipe 1. The upper end of the oil delivery pipe 1 is fixedly connected to an oil delivery pipe 2. The input end of the oil delivery pipe 2 penetrates through the outer surface of the oil storage box and extends into the inner cavity of the oil storage box. A filter box is slidably connected to the middle of the oil storage box, and the filter box is symmetrically and fixedly connected with a limiting assembly.

[0013] With the above technical solution, in this solution, the input end of the oil delivery pipe 2 penetrates through the outer surface of the oil storage box and extends into the inner cavity of the oil delivery pipe 1, and then the output end of the oil storage box is fixedly connected to the oil delivery pipe 1. The lower end of the oil delivery pipe 1 is fixedly connected to the lower end of the check valve 3. Therefore, when the gas temperature in the connection pipe cavity decreases, it will contract, and then under the elastic force of the spring 2, it will drive the rubber pad to move downward, thus forming a negative pressure in the upper part of the connection pipe cavity. Then it will drive the lubricating oil in the inner cavity of the oil delivery pipe 1 to flow into the upper part of the connection pipe cavity together with the air, and then store the lubricating oil in the upper part of the connection pipe cavity, which is convenient for later spraying the lubricating oil from the check valve 3 and the inner cavity of the oil outlet pipe onto the teeth of the inner gear ring and the planetary gear.

[0014] A further improvement of the technical solution of the present invention lies in that: a check valve 2 is fixedly connected to the lower part of the inner cavity of the oil delivery pipe 1.

[0015] With the above technical solution, in this solution, by fixedly connecting a check valve 2 to the lower part of the oil delivery pipe 1, it can prevent the lubricating oil in the connection pipe cavity from being pushed into the inner cavity of the oil delivery pipe 1 when the rubber pad moves upward in the connection pipe cavity, and then cause the lubricating oil to flow back in the inner cavities of the oil delivery pipe 1 and the oil delivery pipe 2, thus affecting the delivery of the lubricating oil to the inner cavities of the check valve 3 and the oil outlet pipe.

[0016] A further improvement of the technical solution of the present invention lies in that: a check valve 1 is fixedly connected to the inner cavity of the oil outlet groove 2.

[0017] With the above technical solution, in this solution, by fixedly connecting a check valve 1 to the lower part of the oil outlet groove 2, it can prevent the lubricating oil stored in the inner cavity of the oil storage box from flowing into the lower part of the inner cavity of the connection shell through the oil outlet groove 2.

[0018] A further improvement of the technical solution of the present invention lies in that: the limiting component includes a housing and a first spring. The outer surface of the housing is fixedly connected to the filter box. A clamping block is slidably connected to the inner cavity of the housing. One side of the first spring close to the clamping block is fixedly connected to the clamping block, and the side of the first spring away from the clamping block is fixedly connected to the inner wall of the housing. A limiting groove for cooperating with the clamping block is provided on one side of the oil storage box close to the clamping block.

[0019] With the above technical solution, in this solution, the elastic force of the first spring is used to drive the first spring to stretch, and then the clamping block will be pushed to slide in the inner cavity of the housing, and then the clamping block will be pushed to move towards the limiting groove. Through the cooperation of the clamping block and the limiting groove, the position of the filter box in the middle of the oil storage box can be limited.

[0020] A further improvement of the technical solution of the present invention lies in that: a plurality of filter holes are provided on the bottom wall of the inner cavity of the filter box.

[0021] With the above technical solution, in this solution, by providing a plurality of filter holes on the bottom wall of the inner cavity of the filter box, the lubricating oil transported from the second oil outlet groove to the inner cavity of the filter box can be filtered, and the dust in the inner cavity of the lubricating oil can be intercepted, preventing these impurities from being transported into the inner cavity of the oil storage box.

[0022] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is:

[0023] 1. When the sun gear operates in the present invention, heat will be generated, and then the heat conduction block contacts the inner wall of the connection groove, so that the heat conduction block will conduct the heat into the inner cavity of the connecting pipe. Since oxygen is filled in the lower part of the inner cavity of the connecting pipe, the oxygen will expand when heated, and then the rubber pad will be pushed to move towards the direction of the check valve three, so that the lubricating oil transported to the upper part of the inner cavity of the connecting pipe can be pushed from the inner cavity of the connecting pipe into the inner cavity of the check valve three, and then the lubricating oil is sprayed to the meshing position of the planetary gear and the inner cavity of the connecting shell through the oil outlet pipe, so that the tooth positions of the planetary gear and the inner gear ring can be lubricated, enabling the device to continuously and stably supply an appropriate amount of lubricating oil with the temperature change of the sun gear, effectively reducing the direct contact between parts, thereby reducing wear and keeping the mechanical operation smooth.

[0024] 2. When the present invention sprays lubricating oil at the tooth positions of the planetary gear and the inner gear ring cavity through the oil outlet pipe, some excess lubricating oil often falls to the lower part of the inner cavity of the connection shell. Long-term accumulation will cause the lubricating oil to deteriorate in the inner cavity of the connection shell, thus affecting the normal use of the device. By providing an oil outlet groove 1 at the lower part of the inner gear ring, some lubricating oil located on the side far from the oil outlet groove 2 can flow into the oil outlet groove 2 through the inner cavity of the oil outlet groove 1, and then these excess lubricating oils are discharged from the inner cavity of the connection shell through the oil outlet groove 2, reducing the accumulation of a large amount of lubricating oil at the lower part of the inner cavity of the connection shell, and then preventing a large amount of lubricating oil from deteriorating, thus causing waste of resources.

[0025] 3. The input end of the second oil delivery pipe of the present invention penetrates through the outer surface of the oil storage box and extends into the inner cavity of the first oil delivery pipe. Then, the output end of the oil storage box is fixedly connected to the first oil delivery pipe, and the lower end of the first oil delivery pipe is fixedly connected to the lower end of the check valve 3. Thus, when the gas temperature in the connection pipe cavity decreases, it will contract, and then under the elastic force of the spring 2, it will drive the rubber pad to move downward, thereby forming a negative pressure in the upper part of the connection pipe cavity. Then, it will drive the lubricating oil in the inner cavity of the first oil delivery pipe to flow into the upper part of the connection pipe cavity together with the air, and then store the lubricating oil in the upper part of the connection pipe cavity, thus facilitating the subsequent spraying of the lubricating oil from the check valve 3 and the inner cavity of the oil outlet pipe to the tooth positions of the inner gear ring and the planetary gear. By fixedly connecting a check valve 2 at the lower part of the first oil delivery pipe, it can prevent the rubber pad from moving upward in the connection pipe cavity, avoiding the lubricating oil in the connection pipe cavity from being pushed into the inner cavity of the first oil delivery pipe, and then causing the lubricating oil to flow backward in the inner cavities of the first oil delivery pipe and the second oil delivery pipe, thus affecting the delivery of the lubricating oil to the inner cavities of the check valve 3 and the oil outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;

[0028] Figure 2 Schematic diagram of the overall structure of the present invention Figure 2 ;

[0029] Figure 3 Schematic diagram of the overall structure of the present invention Figure 3 ;

[0030] Figure 4 Schematic diagram of the sun gear of the present invention Figure 1 ;

[0031] Figure 5 Schematic diagram of the lubrication assembly of the present invention Figure 1 ;

[0032] Figure 6Schematic diagram of the sun gear of the present invention Figure 2 ;

[0033] Figure 7 Schematic diagram of the internal gear ring of the present invention Figure 1 ;

[0034] Figure 8 Schematic diagram of the internal gear ring of the present invention Figure 2 ;

[0035] Figure 9 Schematic diagram of the first oil pipeline of the present invention;

[0036] Figure 10 Schematic diagram of the fuel tank assembly of the present invention;

[0037] Figure 11 Schematic diagram of the limit assembly of the present invention;

[0038] Figure 12 Schematic diagram of the lubrication assembly of the present invention Figure 2 。

[0039] In the figure: 1, support frame; 2, gearbox; 3, first connecting plate; 4, connecting shell; 41, internal gear ring; 411, first oil outlet groove; 42, second oil outlet groove; 421, first check valve; 43, planetary gear; 44, sun gear; 441, connecting groove; 442, second connecting plate; 45, output shaft; 5, fuel tank assembly; 51, first oil pipeline; 511, second check valve; 52, second oil pipeline; 53, oil storage box; 531, limit groove; 54, filter box; 55, limit assembly; 551, outer shell; 552, first spring; 553, clamping block; 6, lubrication assembly; 61, connecting pipe; 62, heat conduction block; 63, second spring; 64, rubber pad; 65, third check valve; 66, oil outlet pipe. Detailed implementation manners

[0040] The following further describes the present invention in detail with reference to embodiments:

[0041] Embodiment 1

[0042] As Figures 1 - 12As shown in the figure, the present invention provides a self-lubricating system for a planetary gear speed reducer, including a support frame 1, a gear box 2, a first connecting plate 3, a connecting shell 4, and an oil tank assembly 5; the upper part of the support frame 1 is fixedly connected to the lower part of the gear box 2, the connecting shell 4 is fixedly connected to the gear box 2 through a plurality of bolts, the first connecting plate 3 is fixedly connected to the connecting shell 4 through a plurality of bolts, an internal gear ring 41 is fixedly connected to the inner cavity of the connecting shell 4, a plurality of planetary gears 43 are meshed and connected to the inner cavity of the internal gear ring 41, a plurality of planetary gears 43 are commonly meshed and connected to a sun gear 44, a power output shaft 45 is fixedly connected to the middle of the sun gear 44, and one side of a plurality of planetary gears 43 away from the first connecting plate 3 is commonly fixedly connected to the power output shaft 45. The middle part of one side of the first connecting plate 3 close to the internal gear ring 41 is fixedly connected to a second connecting plate 442, a lubricating component 6 is fixedly connected to the middle of the second connecting plate 442, there is a gap between the side of the second connecting plate 442 close to the sun gear 44 and the sun gear 44, a connecting groove 441 is formed on the side of the sun gear 44 close to the first connecting plate 3, the lubricating component 6 includes a connecting pipe 61, a second spring 63, and a rubber pad 64, a heat conducting block 62 is fixedly connected to the side of the inner cavity of the connecting pipe 61 away from the first connecting plate 3, the lower part of the connecting pipe 61 is located in the inner cavity of the connecting groove 441, the side of the heat conducting block 62 away from the first connecting plate 3 is attached to the inner wall of the connecting groove 441, the side of the second spring 63 close to the rubber pad 64 is fixedly connected to the rubber pad 64, the side of the second spring 63 away from the rubber pad 64 is fixedly connected to the middle of the connecting pipe 61, a check valve three 65 is fixedly connected to the upper part of the connecting pipe 61, and the inner cavity of the connecting pipe 61 is communicated with the inner cavity of the check valve three 65. An oil outlet pipe 66 is fixedly connected to the side of the inner cavity of the check valve three 65 close to the internal gear ring 41, and the lower part of the connecting pipe 61 is filled with gas.

[0043] In this embodiment, the entire device can be supported and connected through the support frame 1, and connected to the gear box 2 through the power output shaft 45, so that the decelerated power can be output to external equipment. Through the connection between the first connecting plate 3 and the connecting shell 4, the inner cavity of the connecting shell 4 can be sealed to prevent external dust and the like from entering the inner cavity of the connecting shell 4 and accumulating on the teeth of the internal gear ring 41, planetary gears 43, and sun gear 44, thereby affecting the normal use of the device. When the sun gear 44 operates, heat will be generated, and then the heat conducting block 62 will contact the inner wall of the connecting groove 441, so that the heat conducting block 62 will conduct the heat into the inner cavity of the connecting pipe 61. Since oxygen is filled in the lower part of the inner cavity of the connecting pipe 61, the oxygen will expand when heated, and then push the rubber pad 64 in the direction of the check valve three 65, so that the lubricating oil transported to the upper part of the inner cavity of the connecting pipe 61 can be pushed from the inner cavity of the connecting pipe 61 into the inner cavity of the check valve three 65, and then the lubricating oil is sprayed onto the meshing position of the planetary gears 43 and the inner cavity of the connecting shell 4 through the oil outlet pipe 66, so as to lubricate the teeth of the planetary gears 43 and the internal gear ring 41.

[0044] Embodiment 2

[0045] As Figure 5 , Figure 9 and Figure 12 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, a check valve II 511 is fixedly connected to the lower part of the inner cavity of the oil delivery pipe I 51.

[0046] In this embodiment, during the operation of the device, the meshing of the planetary gear 43 and the sun gear 44 will generate a large amount of frictional heat due to the lack of lubricating oil. Then, this heat will be transferred to the heat conducting block 62 through the inner wall of the connecting groove 441. Then, this heat will heat the gas in the lower part of the inner cavity of the connecting pipe 61. After the gas is heated, it will expand and then push the rubber pad 64 to slide upward in the inner cavity of the connecting pipe 61. Since a check valve II 511 is fixedly connected to the inner cavity of the oil delivery pipe I 51, it can prevent the lubricating oil in the upper part of the inner cavity of the connecting pipe 61 from being transported to the inner cavity of the oil delivery pipe I 51 when the rubber pad 64 slides upward in the inner cavity of the connecting pipe 61. Then, under the action of the rubber pad 64, this lubricating oil will be transported into the inner cavity of the check valve III 65, and then through the cooperation of the check valve III 65 and the oil outlet pipe 66, the lubricating oil can be sprayed onto the teeth of the planetary gear 43 and the internal gear ring 41. Then, when the planetary gear 43 rotates, the lubricating oil can be smeared on the teeth of the sun gear 44, so as to reduce the phenomenon of jamming during the operation of the device and also reduce the frictional heat.

[0047] Embodiment 3

[0048] As Figure 6 and Figure 10 shown, on the basis of Embodiment 2, the present invention provides a technical solution: Preferably, the fuel tank assembly 5 includes an oil delivery pipe I 51 and an oil storage box 53. The lower end of the oil delivery pipe I 51 is fixedly connected to the upper end of the check valve III 65, and the inner cavity of the check valve III 65 is communicated with the inner cavity of the oil delivery pipe I 51. The upper end of the oil delivery pipe I 51 is fixedly connected to an oil delivery pipe II 52. The input end of the oil delivery pipe II 52 penetrates through the outer surface of the oil storage box 53 and extends into the inner cavity of the oil storage box 53. A filter box 54 is slidably connected to the middle of the oil storage box 53, and a limiting assembly 55 is symmetrically and fixedly connected to the filter box 54.

[0049] In this embodiment, after the temperature on the sun gear 44 decreases, the heat transfer to the heat conducting block 62 will be reduced. Then, the gas in the inner cavity of the connecting pipe 61 will gradually shrink. Then, under the elastic force of the spring II 63, it will drive the rubber pad 64 to slide downward, so as to form a negative pressure in the upper part of the inner cavity of the connecting pipe 61. Then, it will drive the lubricating oil in the inner cavity of the oil delivery pipe I 51 to flow into the upper part of the inner cavity of the connecting pipe 61 together with the air, and then store the lubricating oil in the upper part of the inner cavity of the connecting pipe 61. At the same time, it can drive the oil delivery pipe II 52 to extract the lubricating oil in the inner cavity of the oil storage box 53.

[0050] Example 4

[0051] As Figure 7 , Figure 8 , Figure 10 and Figure 11 shown, on the basis of Embodiment 3, the present invention provides a technical solution: Preferably, an oil outlet groove 411 is opened at the lower part of the internal gear ring 41, an oil outlet groove 42 is opened at the lower part of the connecting shell 4, the oil outlet groove 411 and the oil outlet groove 42 are adjacent in position, a one-way valve 421 is fixedly connected to the inner cavity of the oil outlet groove 42, the limiting component 55 includes a housing 551 and a first spring 552, the outer surface of the housing 551 is fixedly connected to the filter box 54, a clamping block 553 is slidably connected to the inner cavity of the housing 551, one side of the first spring 552 close to the clamping block 553 is fixedly connected to the clamping block 553, and the other side of the first spring 552 far from the clamping block 553 is fixedly connected to the inner wall of the housing 551. A limiting groove 531 for cooperating with the clamping block 553 is opened on one side of the oil storage box 53 close to the clamping block 553, and a plurality of filter holes are opened on the bottom wall of the inner cavity of the filter box 54.

[0052] In this embodiment, the excess lubricating oil sprayed in the inner cavity of the connecting shell 4 will gradually gather at the lower part of the inner cavity of the connecting shell 4, and then flow into the inner cavity of the oil outlet groove 42 through the oil outlet groove 411. Then, through the cooperation of the one-way valve 421 and the oil outlet groove 42 in the inner cavity of the oil outlet groove 42, these excess lubricating oils can be conveyed into the inner cavity of the filter box 54. Through the filter holes on the bottom wall of the inner cavity of the filter box 54, the lubricating oil can be filtered, and dust in the lubricating oil can be intercepted. Then, the filtered lubricating oil will be conveyed into the inner cavity of the oil storage box 53. The staff can regularly clean the dust and the like in the inner cavity of the filter box 54, slide the filter box 54 out from the middle of the oil storage box 53, and then clean the dust and the like in the inner cavity of the filter box 54, and then reset the filter box 54. During the resetting process, the oil storage box 53 will apply a force to the clamping block 553, driving the clamping block 553 to move away from the oil storage box 53 in the inner cavity of the housing 551, and then driving the first spring 552 to contract. When the clamping block 553 contacts the inner cavity of the limiting groove 531, under the elastic force of the first spring 552, the first spring 552 will be driven to stretch, and then the clamping block 553 will be pushed to move towards the inner cavity direction of the limiting groove 531. Then, with the cooperation of the clamping block 553 and the limiting groove 531, the position of the filter box 54 in the oil storage box 53 can be limited.

[0053] The working principle of the self-lubricating system of the planetary gear speed reducer and its housing will be specifically described below.

[0054] As Figures 1 - 12As shown, when the device is running, the meshing of the planetary gear 43 and the sun gear 44 will generate a large amount of frictional heat due to the lack of lubricating oil. Then, this heat will be transferred to the heat conducting block 62 through the inner wall of the connecting groove 441. Then, this heat will heat the gas in the lower part of the inner cavity of the connecting pipe 61. After the gas is heated, it will expand and then push the rubber pad 64 to slide upward in the inner cavity of the connecting pipe 61. Since the check valve two 511 is fixedly connected in the inner cavity of the oil delivery pipe one 51, it can prevent the lubricating oil in the upper part of the inner cavity of the connecting pipe 61 from being transported into the inner cavity of the oil delivery pipe one 51 when the rubber pad 64 slides upward in the inner cavity of the connecting pipe 61. Then, under the action of the rubber pad 64, these lubricating oils will be transported into the inner cavity of the check valve three 65. Then, through the cooperation of the check valve three 65 and the oil outlet pipe 66, the lubricating oil can be sprayed onto the teeth of the planetary gear 43 and the internal gear ring 41. Then, when the planetary gear 43 rotates, the lubricating oil can be smeared on the teeth of the sun gear 44. Thus, the phenomenon of jamming during the operation of the device can be reduced, and the frictional heat can also be reduced;

[0055] After the temperature on the sun gear 44 decreases, the heat transfer to the heat conducting block 62 will be reduced. Then, the gas in the inner cavity of the connecting pipe 61 will gradually shrink. Then, under the elastic force of the spring two 63, it will drive the rubber pad 64 to slide downward, thus forming a negative pressure in the upper part of the inner cavity of the connecting pipe 61. Then, it will drive the lubricating oil in the inner cavity of the oil delivery pipe one 51 to flow into the upper part of the inner cavity of the connecting pipe 61 together with the air. Then, the lubricating oil is stored in the upper part of the inner cavity of the connecting pipe 61. At the same time, it can drive the oil delivery pipe two 52 to extract the lubricating oil in the inner cavity of the oil storage box 53;

[0056] The excess lubricating oil sprayed into the inner cavity of the connecting shell 4 will gradually gather at the lower part of the inner cavity of the connecting shell 4, and then flow into the inner cavity of the second oil outlet groove 42 through the first oil outlet groove 411. Then, through the cooperation of the one-way valve 421 and the second oil outlet groove 42 in the inner cavity of the second oil outlet groove 42, these excess lubricating oils can be transported into the inner cavity of the filter box 54. Through the filter holes on the bottom wall of the inner cavity of the filter box 54, the lubricating oil can be filtered, and dust in the lubricating oil can be intercepted. Then, the filtered lubricating oil will be transported into the inner cavity of the oil storage box 53. The staff can regularly clean the dust and the like in the inner cavity of the filter box 54. The filter box 54 is slid out from the middle of the oil storage box 53, and then the dust and the like in the inner cavity of the filter box 54 are cleaned. Then, the filter box 54 is reset. During the reset process, the oil storage box 53 will apply a force to the clamping block 553, driving the clamping block 553 to move away from the oil storage box 53 in the inner cavity of the outer shell 551, and then driving the first spring 552 to contract. When the clamping block 553 contacts the inner cavity of the limiting groove 531, under the elastic force of the first spring 552, the first spring 552 will be driven to extend, and then the clamping block 553 will be pushed to move towards the inner cavity direction of the limiting groove 531. Then, with the cooperation of the clamping block 553 and the limiting groove 531, the position of the filter box 54 in the oil storage box 53 can be limited.

[0057] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A self-lubricating system for a planetary gear reducer, comprising a support frame (1), a gear box (2), a connecting plate (3), a connecting shell (4) and an oil tank assembly (5); characterized in that: The upper part of the support frame (1) is fixedly connected to the lower part of the gear box (2); the connecting shell (4) is fixedly connected to the gear box (2) by a plurality of bolts; the connecting plate (3) is fixedly connected to the connecting shell (4) by a plurality of bolts; an inner gear ring (41) is fixedly connected to the inner cavity of the connecting shell (4); a plurality of planetary gears (43) are meshedly connected to the inner cavity of the inner gear ring (41); the plurality of planetary gears (43) are meshedly connected to a sun gear (44); the sun gear (44 ) is fixedly connected to an output shaft (45) in the middle, a side of a plurality of the planetary gears (43) away from the connecting plate one (3) is fixedly connected to the output shaft (45), a side of the connecting plate one (3) close to the inner gear ring (41) is fixedly connected to a connecting plate two (442) in the middle, a lubrication assembly (6) is fixedly connected to the connecting plate two (442) in the middle, a gap exists between the side of the connecting plate two (442) close to the sun gear (44) and the sun gear (44), and the sun gear A connecting groove (441) is provided on a side close to the connecting plate (3), the lubricating assembly (6) comprises a connecting pipe (61), a spring (63) and a rubber pad (64), a heat conducting block (62) is fixedly connected to the inner cavity of the connecting pipe (61) on the side away from the connecting plate (3), the lower part of the connecting pipe (61) is located in the inner cavity of the connecting groove (441), the side of the heat conducting block (62) away from the connecting plate (3) is in contact with the inner wall of the connecting groove (441), and the spring (63) is fixedly connected to the inner cavity of the connecting pipe (61). 3) The side close to the rubber pad (64) is fixedly connected to the rubber pad (64), the side of the spring 2 (63) away from the rubber pad (64) is fixedly connected to the middle of the connecting pipe (61), the upper part of the connecting pipe (61) is fixedly connected to a one-way valve 3 (65), and the inner cavity of the connecting pipe (61) is communicated with the inner cavity of the one-way valve 3 (65), the inner cavity of the one-way valve 3 (65) is fixedly connected to an oil outlet pipe (66) on the side close to the inner gear ring (41), and the lower part of the connecting pipe (61) is filled with gas.

2. The self-lubricating system of a planetary gear reducer according to claim 1, characterized in that: The lower part of the inner gear ring (41) is provided with an oil outlet groove 1 (411), and the lower part of the connecting shell (4) is provided with an oil outlet groove 2 (42), and the oil outlet groove 1 (411) is adjacent to the oil outlet groove 2 (42).

3. The self-lubricating system of a planetary gear reducer according to claim 1, characterized in that: The oil tank assembly (5) comprises an oil delivery pipe (51) and an oil storage box (53); the lower end of the oil delivery pipe (51) is fixedly connected to the upper end of the one-way valve (65), and the inner cavity of the one-way valve (65) is communicated with the inner cavity of the oil delivery pipe (51); the upper end of the oil delivery pipe (51) is fixedly connected to the oil delivery pipe (52); the input end of the oil delivery pipe (52) passes through the outer surface of the oil storage box (53) and extends to the inner cavity of the oil storage box (53); the middle part of the oil storage box (53) is slidably connected to a filter box (54); the filter box (54) is symmetrically fixedly connected to the limit assembly (55).

4. The self-lubricating system of a planetary gear reducer according to claim 3, characterized in that: A check valve 2 (511) is fixedly connected to the lower part of the inner cavity of the oil delivery pipe 1 (51).

5. The self-lubricating system of a planetary gear reducer according to claim 2, characterized in that: The inner cavity of the second oil outlet groove (42) is fixedly connected with a one-way valve (421).

6. The self-lubricating system of a planetary gear reducer according to claim 3, characterized in that: The limiting assembly (55) comprises a shell (551) and a spring 1 (552); the outer surface of the shell (551) is fixedly connected to the filter box (54); a block (553) is slidably connected to the inner cavity of the shell (551); a side of the spring 1 (552) close to the block (553) is fixedly connected to the block (553); a side of the spring 1 (552) away from the block (553) is fixedly connected to the inner wall of the shell (551); and a limiting groove (531) for use with the block (553) is provided on a side of the oil storage box (53) close to the block (553).

7. The self-lubricating system of a planetary gear reducer according to claim 3, characterized in that: A plurality of filter holes are formed on the bottom wall of the inner cavity of the filter box (54).

8. The box body is characterized by: A self-lubricating system suitable for a planetary gear reducer as described in any one of claims 1 to 7.

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