A precision speed reducer structure for a positioning device

Abstract

The present application relates to the technical field of speed reducer, in particular to a precision speed reducer structure for positioning device, which comprises a shell and a shell cover installed above the shell, an input shaft is arranged on one side of the shell, a speed reduction gear set is arranged in the shell, an output shaft is arranged on the other side of the shell; an intermittent flow extraction assembly is arranged on one side of the shell, a filter assembly is arranged in the intermittent flow extraction assembly, the filter assembly comprises a filtrate module and a tooth scrap separation module. Compared with the prior art, the present application significantly improves the flowability and circulation efficiency of lubricating oil by setting the intermittent flow extraction assembly, effectively eliminates the risk of lubrication dead angle and oil film interruption, and has the advantages of self-driven structure, low energy consumption, stable response, high oil cleanliness and the like, and is suitable for high-reliability and high-durability lubrication requirements in complex working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of reducers, and in particular to a precision reducer structure for a positioning device. Background Art

[0002] The widespread application of automation equipment, industrial robots, and high-precision transmission platforms has placed higher demands on reduction mechanisms in terms of transmission accuracy, response speed, operational stability, and structural compactness. Especially in scenarios requiring high-precision positioning, precision reducers, as core transmission components, typically achieve low-speed, high-torque output through multi-stage gear transmission to enhance the system's position control capabilities and load adaptability.

[0003] In the prior art, a Chinese patent document with publication number CN203305101U proposes a workpiece rotation positioning device in which a precision planetary reducer is installed at one end of a base, and the precision planetary reducer is driven by a servo motor; a rotating shaft is installed at the other end of the base, a pallet is fixed to one end of the rotating shaft, and a contoured positioning finger that cooperates with the inner ring of the workpiece is installed on the same circumference of the pallet, and the other end of the rotating shaft is connected to the output shaft of the precision planetary reducer through a coupling. It can accurately control the angle of rotation of the gear sleeve to realize production automation; reduce the labor intensity of workers and improve productivity. However, consistent with the traditional method, the positioning device usually requires a reducer for speed adjustment. During the operation of the reducer, metal tooth chips are often generated due to the continuous wear of the gear meshing surface. These tooth chips are usually mixed in the lubricating oil and difficult to separate. As the lubricating oil circulates back to the gear meshing area, secondary wear is formed, which not only aggravates the damage to the gear surface, but also accelerates oil contamination and reduces the lubrication effect. If tooth chips and impurities remain in the oil for a long time, the lubricating oil replacement cycle will be shortened, and the frequency of manual maintenance and system operating costs will increase. Therefore, the present application discloses a precision reducer structure for a positioning device. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a precision reducer structure for a positioning device to solve the problem that metal chips generated by gear meshing wear in traditional reducers are mixed into the lubricating oil, resulting in aggravated secondary wear and accelerated oil contamination, thereby shortening the oil change cycle and increasing maintenance costs.

[0005] Based on the above purpose, the application provides a precision speed reducer structure for positioning device, which comprises a shell and a shell cover installed above the shell, one side of the shell is provided with an input shaft, the inside of the shell is provided with a reduction gear set, the other side of the shell is provided with an output shaft, the input shaft is engaged with the reduction gear set through the output shaft for transmission; an intermittent flow extraction assembly is arranged on one side of the inside of the shell, which is used for intermittently extracting and spraying the lubricating oil filled in the inside of the shell, so as to enhance the flow of the lubricating oil; a filtering assembly comprises a filtrate module and a gear scrap separation module, the filtrate module is arranged in the inside of the intermittent flow extraction assembly, which is used for filtering the fine gear scrap in the lubricating oil in the inside of the intermittent flow extraction assembly, the gear scrap separation module is arranged on one side of the inner wall of the shell and is communicated with the filtrate module, which is used for separating and discharging the fine gear scrap filtered by the filtrate module.

[0006] Preferably, the intermittent flow extraction assembly comprises a fixed sleeve fixedly installed on one side of the inside of the shell, and a T-shaped rod fixedly installed on one side of the top of the shell cover, a movable sleeve is movably installed at the bottom of the T-shaped rod, a piston matched with the inside of the fixed sleeve is arranged at the bottom of the movable sleeve, a plurality of engagement tooth grooves are formed in one side of the movable sleeve, a rotating rod is rotatably installed on one side of the inside of the shell, a trigger wheel is fixedly sleeved on one side of the rotating rod, a plurality of trigger teeth matched with the engagement tooth grooves are arranged on one side of the outer surface of the trigger wheel, a driving wheel for adjusting the rotation of the trigger wheel is fixedly sleeved on one side of the output shaft, a first liquid extraction pipe is arranged on one side of the fixed sleeve, a liquid outlet pipe is arranged on the other side of the fixed sleeve, a second liquid extraction pipe is arranged in the middle of the bottom of the fixed sleeve, and a slag outlet pipe is obliquely arranged on one side of the bottom of the fixed sleeve.

[0007] Preferably, a plurality of first trigger columns and a plurality of second trigger columns are circumferentially arranged on one side of the trigger wheel, a driving rod matched with the first trigger columns is arranged on one side of the driving wheel, a U-shaped driving groove matched with the second trigger columns is formed in one side of the driving wheel, when the output shaft rotates one circle, the driving rod contacts the first trigger columns to push the trigger wheel to rotate, the U-shaped driving groove is engaged with the second trigger columns to push the second trigger columns to drive the trigger wheel to continue to rotate.

[0008] Preferably, a first reset spring is sleeved on the bottom surface of the T-shaped rod, and the bottom surface of the first reset spring is fixedly connected with one side of the movable sleeve close to the piston.

[0009] Preferably, the first liquid extraction pipe is arranged in a downwardly inclined shape, with one side of the first liquid extraction pipe close to the inner bottom surface of the shell, and the liquid outlet pipe is arranged in an upwardly inclined shape, and the liquid outlet pipe can be directly connected to the interior of the shell.

[0010] Preferably, a plurality of interconnected flow pipes can be embedded in the inner wall of the shell, and an inlet is provided above the shell. The liquid outlet pipe can extend to the inner wall of the shell and be connected to the flow pipe. One side of the plurality of flow pipes is respectively provided through the shell, and the penetration positions of the plurality of flow pipes correspond to the meshing positions of the reduction gear set.

[0011] Preferably, one-way valves for allowing only inflow but not outflow are provided inside the first liquid pumping pipe and the second liquid pumping pipe, and one-way valves for allowing only outflow but not inflow are provided inside the liquid outlet pipe.

[0012] Preferably, the filtrate module includes a filter screen fixedly installed on one side of the liquid outlet pipe. During the liquid discharge process of the liquid outlet pipe, the filter screen filters tooth chips and is deposited to the bottom of the fixed sleeve near the slag discharge pipe under the downward pressure of the hydraulic oil.

[0013] Preferably, a sliding plate is slidably installed on one side of the interior of the fixed sleeve, and a sealing block for sealing the slag discharge pipe is provided at the bottom of the sliding plate, and a sealing strip is provided at the sealing position of the sealing block and the slag discharge pipe, and a movable trigger rod is movably installed on one side of the top of the sliding plate, and a second return spring is provided on one side of the movable trigger rod embedded in the sliding plate, and the other end of the second return spring is fixedly connected to the top side of the sliding plate, and both sides of the movable trigger rod are inclined, and an L-shaped rod is provided on one side of the bottom of the piston, and one side of the L-shaped rod is set to an arc shape, and the L-shaped rod is adapted to the movable trigger rod, and the top end of the travel of the sliding plate is located at the bottom end of the filter screen.

[0014] Preferably, one side of the slag discharge pipe penetrates to the inner wall of the shell, and the tooth chip separation module includes a filter room arranged on one side of the inner wall of the shell, a filter plate is obliquely arranged at the bottom of the filter room, a guide bucket is provided at the bottom of the filter plate, a collection tank is provided on the bottom inner wall of the shell, a connecting pipe is provided at the bottom of the guide bucket, and the connecting pipe is connected to the collection tank, and the bottom of the second liquid suction pipe penetrates the bottom inner wall of the shell for absorbing the lubricating oil inside the collection tank.

[0015] Beneficial effects of the present invention:

[0016] 1. This positioning device uses a precision reducer structure. By setting up a filtrate module and a tooth chip separation module for coordinated use, it achieves efficient purification of the lubricating oil and intelligent discharge of tooth chips. A filter screen is set on the side of the liquid outlet pipe to intercept the tiny metal particles in the lubricating oil for the first time. The tooth chips are deposited at the bottom of the fixed sleeve under the action of hydraulic pressure. During the liquid extraction process, the L-shaped rod links the sliding plate structure to temporarily open the blocking block to release the slag pipe. The deposited tooth chips are discharged synchronously with the oil, effectively avoiding blockage caused by long-term accumulation. Subsequently, the mixture of tooth chips and oil flows through the filter provided in the shell. The filter plate is arranged obliquely at the bottom of the body. The oil enters the guide bucket along the filter hole and is collected into the collection tank through the connecting pipe. Finally, it is pumped back by the second pumping pipe to realize the recycling of clean oil, while the remaining tooth chips are effectively blocked and finally discharged out of the system. This structure realizes oil residue diversion, closed control and time-sharing discharge through the pumping rhythm drive, forming a low-energy, automated, closed-loop oil purification path, which not only improves the cleanliness and utilization rate of the lubricating medium, but also reduces the internal wear and maintenance frequency of the reduction device, and enhances the reliable operation capability and adaptive lubrication level of the system.

[0017] 2. This positioning device uses a precision reducer structure, which is equipped with an intermittent pumping component and a linkage structure between the output shaft, trigger wheel and drive wheel to achieve precise mechanical step-by-step pumping and pressure control. On the basis of ensuring the quantitative extraction and timed spraying of lubricating oil, the oil flow direction is automatically controlled with the help of dual pumping channels and float-type one-way valve design, which significantly improves the fluidity and circulation efficiency of the lubricating oil, effectively eliminates the risk of lubrication dead corners and oil film interruption, and has the advantages of self-driven structure, low energy consumption, stable response, and high oil cleanliness. It is suitable for precision reduction systems with high reliability and high durability lubrication requirements under complex working conditions.

[0018] 3. This positioning device uses a precision reducer structure. It is equipped with a liquid outlet pipe, which is arranged upward and can be discharged directly inside the shell to enhance fluidity. It can also be connected to the flow pipe embedded in the shell. It helps to quickly discharge free gas and avoid compression abnormalities. It can also accurately guide the oil to key parts for directional lubrication, effectively improving the lubrication coverage efficiency and oil film formation quality, and extending the service life of friction pairs such as gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2This is a schematic diagram of the position structure of the intermittent flow extraction component of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the intermittent flow extraction component of the present invention from a first perspective;

[0023] Figure 4 This is a schematic diagram of the operating state of the driving wheel and the trigger wheel of the present invention;

[0024] Figure 5 This is a schematic structural diagram of the intermittent flow extraction component of the present invention from a second perspective;

[0025] Figure 6 For the present invention Figure 5 A in the middle is an enlarged structural diagram;

[0026] Figure 7 Schematic diagram of the internal cross-sectional structure of the fixed sleeve of the present invention;

[0027] Figure 8 For the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0028] Figure 9 This is a schematic structural diagram of the tooth chip separation module of the present invention;

[0029] Figure 10 It is a schematic diagram of the partial structure of the tooth chip separation module of the present invention.

[0030] The following are marked in the figure:

[0031] 1. Housing; 2. Housing cover; 3. Input shaft; 4. Reduction gear set; 5. Output shaft; 6. Fixed sleeve; 7. T-bar; 8. Movable sleeve; 9. First return spring; 10. Piston; 11. L-shaped rod; 12. First liquid extraction pipe; 13. Second liquid extraction pipe; 14. Liquid discharge pipe; 15. Slag discharge pipe; 16. Rotating rod; 17. Trigger wheel; 18. First trigger column; 19. Second trigger column; 20. Drive wheel; 21. Drive rod; 22. U-shaped drive groove; 23. Trigger teeth; 24. Engaging tooth groove; 25. Filter screen; 26. Sliding plate; 27. Blocking block; 28. Movable trigger rod; 29. ​​Second return spring; 30. Filter plate; 31. Guide bucket; 32. Connecting pipe; 33. Collecting tank; 34. Filter room. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0033] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] like Figures 1 to 10 As shown, the positioning device uses a precision reducer structure, including a shell 1 and a shell cover 2 installed above the shell 1, an input shaft 3 is provided on one side of the shell 1, a reduction gear set 4 is provided inside the shell 1, and an output shaft 5 is provided on the other side of the shell 1, and the input shaft 3 is meshed with the reduction gear set 4 through the output shaft 5 for transmission; an intermittent flow extraction component, the intermittent flow extraction component is provided on one side of the interior of the shell 1, and the intermittent flow extraction component is used to intermittently extract and spray the lubricating oil filled in the interior of the shell 1, which can enhance the flow of the lubricating oil; a filtering component, the filtering component includes a filtrate module and a tooth chip separation module, the filtrate module is provided inside the intermittent flow extraction component, the filtrate module is used to filter the fine tooth chips in the lubricating oil inside the intermittent flow extraction component, the tooth chip separation module is provided on one side of the inner wall of the shell 1, and is connected to the filtrate module, and the tooth chip separation module is used to separate and discharge the fine tooth chips filtered by the filtrate module;

[0035] During operation of the positioning device (for example, when operating a rotating shaft structure in gear sleeve machining in conjunction with the positioning device), the external drive motor drives the reduction gear set 4 via the input shaft 3 to perform a reduction transmission, outputting power to the output shaft 5 for precise movement of the load. Simultaneously, the lubricating oil filled within the housing 1 achieves initial splash lubrication driven by the rotation of the gears. The intermittent pumping assembly initiates the oil extraction and injection processes according to the operating cycle, extracting and spraying the accumulated lubricating oil at the bottom to enhance the flow of the lubricating oil, strengthen local lubrication and oil film coverage, and form a dynamic circulating lubrication flow field. In the pumping path, the lubricating oil first passes through the filtrate module of the filtration assembly, intercepting fine gear chips and wear particles. It then enters the gear chip separation module, where the captured gear chips are channeled into a separate collection area through gravity settling or differential cyclonic flow, preventing impurities from circulating in the oil circuit and causing increased wear. This process continues synchronously with the reduction transmission's operating cycle, ensuring that the lubrication system remains clean, efficient, and controllable under dynamic conditions, effectively improving the operational stability, precision retention, and long-term maintenance-free capability of the entire reduction gear unit.

[0036] like Figures 2 to 7 As shown, the intermittent flow extraction component includes a fixed sleeve 6 fixedly mounted on one side of the interior of the shell 1, and a T-bar 7 fixedly mounted on one side of the top of the shell cover 2, a movable sleeve 8 is movably mounted on the bottom of the T-bar 7, a piston 10 adapted to the interior of the fixed sleeve 6 is provided at the bottom of the movable sleeve 8, a plurality of meshing tooth grooves 24 are provided on one side of the movable sleeve 8, a rotating rod 16 is rotatably mounted on one side of the interior of the shell 1, a trigger wheel 17 is fixedly sleeved on one side of the rotating rod 16, a plurality of trigger teeth 23 adapted to the meshing tooth grooves 24 are provided on one side of the outer surface of the trigger wheel 17, a driving wheel 20 for adjusting the rotation of the trigger wheel 17 is fixedly sleeved on one side of the output shaft 5, a first liquid extraction pipe 12 is provided on one side of the fixed sleeve 6, a liquid outlet pipe 14 is provided on the other side of the fixed sleeve 6, a second liquid extraction pipe 13 is provided in the middle of the bottom of the fixed sleeve 6, and a bottom side of the fixed sleeve 6 is obliquely provided with The slag discharge pipe 15 and one side of the trigger wheel 17 are respectively arranged circumferentially with a plurality of first trigger posts 18 and a plurality of second trigger posts 19. A driving rod 21 is provided on one side of the driving wheel 20, and the driving rod 21 is adapted to the first trigger post 18. A U-shaped driving groove 22 is also provided on one side of the driving wheel 20, and the U-shaped driving groove 22 is adapted to the second trigger post 19. When the output shaft 5 rotates one circle, the driving rod 21 contacts the first trigger post 18 and drives the trigger wheel 17 to rotate. The U-shaped driving groove 22 then engages with the second trigger post 19, pushing the second trigger post 19 to drive the trigger wheel 17 to continue to rotate. The bottom surface of the T-bar 7 is sleeved with a first return spring 9, and the bottom surface of the first return spring 9 is fixedly connected to the side of the movable sleeve 8 close to the piston 10. A one-way valve that can only enter but not exit is provided inside the first liquid pumping pipe 12 and the second liquid pumping pipe 13, and a one-way valve that can only exit but not enter is provided inside the liquid discharge pipe 14;

[0037] During the operation of the reduction gear, the output shaft 5 drives the drive wheel 20 fixed thereon to rotate synchronously each time it completes a full circle of rotation. The drive rod 21 on the drive wheel 20 first contacts the first trigger column 18 to push the trigger wheel 17 to rotate a certain angle, and then the U-shaped drive groove 22 engages with the second trigger column 19 and continues to drive the trigger wheel 17 to rotate, thereby completing a complete driving cycle of the trigger wheel 17 (such as Figure 4 In the processes I to IV), since the trigger teeth 23 of the trigger wheel 17 are only arranged at one-third of the circumference, when the trigger teeth 23 and the meshing tooth grooves 24 on the movable sleeve 8 are in the meshing range, the movable sleeve 8 will be driven to move upward, driving the piston 10 at its bottom to move upward along the inside of the fixed sleeve 6 to extract the lubricating oil. At the same time, the second liquid extraction pipe 13 is connected to the filtered lubrication pool of the chip separation module to suck in clean oil to refill the cavity. The first liquid extraction pipe 12 also sucks oil from the bottom of the shell 1 during the oil extraction stage. The one-way valves of the two liquid inlets respectively ensure that the oil will not flow back and be cross-contaminated. When the trigger teeth 23 rotate out of the tooth groove with the trigger wheel 17, the movable sleeve 8 is disengaged from the trigger assembly. At this time, the first return spring 9 at the bottom of the T-bar 7 begins to release its elastic force, causing the movable sleeve 8 to release its elastic force. The movable sleeve 8 drives the piston 10 to press downward into the interior of the fixed sleeve 6. During the oil pressing process, the lubricating oil in the sleeve is sprayed out through the liquid outlet pipe 14 provided with a one-way valve. After the entire action is completed, the trigger wheel 17 stops rotating, and the driving action is repeated after the output shaft 5 completes the next full circle, forming a precisely controlled intermittent lubrication rhythm, thereby achieving continuous lubrication and tooth chip isolation of each meshing point inside the reduction gear set 4, while ensuring oil cleanliness and utilization efficiency. Through the intermittent extraction and pressure delivery mechanism, the lubricating oil can form a periodic circulation flow in the reducer cavity, thereby breaking the local deposition problem of traditional passive splash lubrication, avoiding lubrication dead corners and oil film failure, improving the overall oil fluidity, effectively taking away the local heat generated by gear meshing, and preventing abnormal temperature rise in the viscous area;

[0038] In addition, the trigger teeth 23 of the trigger wheel 17 are only arranged in the meshing range of one-third (120°) of the circumference, and the remaining two-thirds (240°) is an empty tooth section. In this empty tooth section, the movable sleeve 8 is completely disengaged from the trigger wheel 17, and the first return spring 9 independently drives the movable sleeve downward to complete the reset action. The elastic coefficient and reset stroke of the first return spring 9 are designed to match to ensure that when the output shaft 5 is at the maximum design speed, it can still complete the reset within the movement stroke and time provided by the trigger wheel 17 in the two-thirds toothless range. This structure can effectively prevent the trigger teeth 23 from prematurely meshing with the meshing tooth grooves 24 due to insufficient reset under high-speed conditions, thereby ensuring that the piston 10 can perform periodic up and down reciprocating motion with the drive structure, maintaining a stable oil injection and lubrication rhythm;

[0039] It is worth noting that the one-way valves in the first liquid extraction pipe 12, the second liquid extraction pipe 13, and the liquid outlet pipe 14 can all be set as float-type one-way valves or other similar types of one-way valves (which are existing technologies and are not elaborated on in this solution). During extraction, the extraction pressure of the external liquid drives the float-type one-way valve to close the liquid outlet pipe 14, and no liquid will be discharged at this time. During liquid discharge, the float-type one-way valves inside the first liquid extraction pipe 12 and the second liquid extraction pipe 13 are pushed and closed by the outward pressure of the liquid, and no liquid will enter at this time.

[0040] like Figure 2 、 Figure 3 、 Figure 7 As shown, the first liquid pumping pipe 12 is arranged in a downwardly inclined shape, and one side of the first liquid pumping pipe 12 is close to the inner bottom surface of the shell 1. The liquid outlet pipe 14 is arranged in an upwardly inclined shape. The liquid outlet pipe 14 can be directly connected to the interior of the shell 1. A plurality of interconnected flow pipes can be embedded in the inner wall of the shell 1, and an inlet is provided above the shell 1. The liquid outlet pipe 14 can extend to the inner wall of the shell 1 and be connected to the flow pipes. One side of the plurality of flow pipes is respectively provided through the shell 1, and the penetration positions of the plurality of flow pipes correspond to the meshing positions of the reduction gear set 4.

[0041] The first liquid extraction pipe 12 is close to the bottom and is inclined downward, which can extract the lubricating oil and sedimented oil accumulated at the bottom of the shell 1 to the greatest extent, ensuring that there are no dead corners in the lubrication chamber and improving the extraction efficiency. The liquid outlet pipe 14 is arranged upward and directly connected to the inner cavity of the shell 1, so that during the oil compression process, the free gas in the oil-gas mixture can be discharged preferentially along the upward path, avoiding abnormal oil compression and pumping out. This structure is directly connected without an intermediate damping path, and is suitable for working scenarios with low lubricating oil viscosity or high injection rhythm frequency, and can achieve fast response and instant lubrication;

[0042] When the liquid outlet pipe 14 is connected to the flow pipe embedded in the inner wall of the shell 1, the sprayed lubricating oil can be guided to multiple key parts such as bearing seats, gear top gaps, meshing areas, etc., to achieve directional lubrication and zoned oil supply. Directed delivery through pipelines can avoid disorderly splashing of oil inside the shell 1, reduce oil mist accumulation and flow resistance, and improve the overall oil circuit efficiency and cleanliness. This structure is compatible with pressure lubrication or throttling lubrication mode, and can be subsequently expanded to an external pump-controlled oil supply system or a temperature-controlled closed-loop oil circuit, which is conducive to the modular upgrade of the system, and oil outlets at different angles can be set to spray oil directly to high contact areas or dense meshing areas of the gear set, thereby increasing the oil film formation rate and thickness of key friction surfaces (such as tooth tops, tooth roots, shaft necks, etc.), making the lubrication distribution more uniform, the oil film more stable, reducing the wear rate, and extending the service life of components.

[0043] like Figures 7 to 10As shown, the filtrate module includes a filter screen 25 fixedly installed on one side of the liquid outlet pipe 14. During the liquid outlet process of the liquid outlet pipe 14, the filter screen 25 filters the tooth chips and is deposited to the bottom of the fixed sleeve 6 near the slag outlet pipe 15 under the downward pressure of the hydraulic oil. A sliding plate 26 is slidably installed on one side of the interior of the fixed sleeve 6. A blocking block 27 for blocking the slag outlet pipe 15 is provided at the bottom of the sliding plate 26. A sealing strip is provided at the sealing position between the blocking block 27 and the slag outlet pipe 15. A movable trigger rod 28 is movably installed on one side of the top of the sliding plate 26. A second return spring 29 is provided on one side of the movable trigger rod 28 embedded in the sliding plate 26. The other end of the second return spring 29 is fixedly connected to the top side of the sliding plate 26. Both sides are inclined, an L-shaped rod 11 is provided on one side of the bottom of the piston 10, and one side of the L-shaped rod 11 is set in an arc shape. The L-shaped rod 11 is adapted to the movable trigger rod 28, and the top of the stroke of the sliding plate 26 is located at the bottom end of the filter screen 25. One side of the slag discharge pipe 15 penetrates into the inner wall of the shell 1, and the tooth chip separation module includes a filter room 34 arranged on one side of the inner wall of the shell 1, and a filter plate 30 is inclined at the bottom of the filter room 34. A guide bucket 31 is provided at the bottom of the filter plate 30, and a collection tank 33 is provided on the bottom inner wall of the shell 1. A connecting pipe 32 is provided at the bottom of the guide bucket 31, and the connecting pipe 32 is connected to the collection tank 33. The bottom of the second liquid pumping pipe 13 penetrates the bottom inner wall of the shell 1 for absorbing the lubricating oil inside the collection tank 33;

[0044] During the operation of the reduction gear, the piston 10 performs periodic up and down reciprocating motion with the driving structure. During the downward (liquid discharge) process of the piston 10, the L-shaped rod 11 passes through the movable trigger rod 28 from top to bottom. Because it is a downward force, it can only push the blocking block 27 tighter and tighter, but cannot move. Therefore, the movable trigger rod 28 will be squeezed at this time, and the L-shaped rod 11 can come to the bottom of it through the movable trigger rod 28. When the next lubrication extraction action occurs, the piston 10 is pulled upward, driving the L-shaped rod 11 to move from bottom to top. The L-shaped rod 11 contacts the lower inclined surface of the movable trigger rod 28. As can be seen from the figure, the inclination of the inclined surface at the bottom of the movable trigger rod 28 is smaller than the angle set at the inclined surface at its top. Therefore, when the L-shaped rod 11 moves upward, it will synchronously drive the sliding plate 26 and the blocking block 27 upward. Because there is no limit setting above the blocking block 27, the sliding plate 26 moves upward accordingly, driving the blocking block 27 to temporarily open At the outlet of the slag discharge pipe 15, the tooth chips deposited at the bottom of the fixed sleeve 6 are brought out together with the flowing lubricating oil in this process, and the process of extracting the oil is through the stepping of the trigger disk, so the oil extracted in this section will drive the deposited tooth chips at the bottom to flow out along the opened slag discharge pipe 15, and in the next few steps of the trigger disk stepping, it will drive the sliding plate 26 to its sliding top. After limiting the sliding plate 26, the L-shaped rod 11 will squeeze the movable trigger rod 28 through when it continues to move upward, and the L-shaped plate can also be provided with an extrusion spring or reset under the pressure of the oil, etc., at this time it is blocked and the liquid extraction continues, and the oil and tooth chips discharged through the slag discharge pipe 15 first enter the filter room 34, and then pass through the filter plate 30. The oil is filtered downward in the filter plate 30 to the guide bucket 31, and flows to the collection tank 33 through the connecting pipe 32 to be extracted by the second liquid extraction pipe 13, and the remaining tooth chips will be discharged to the outside of the shell 1.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0046] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A precision reducer structure for a positioning device, characterized in that: include: A housing (1) and a housing cover (2) mounted above the housing (1); an input shaft (3) is provided on one side of the housing (1); a reduction gear set (4) is provided inside the housing (1); an output shaft (5) is provided on the other side of the housing (1); the input shaft (3) is meshed with the reduction gear set (4) through the output shaft (5); An intermittent flow extraction component, the intermittent flow extraction component being arranged on one side of the interior of the housing (1), and being used for intermittently extracting and ejecting the lubricating oil filled in the interior of the housing (1), thereby enhancing the flow of the lubricating oil; A filter assembly, the filter assembly comprising a filtrate module and a tooth chip separation module, the filtrate module being arranged inside the intermittent flow extraction assembly, the filtrate module being used to filter fine tooth chips in the lubricating oil inside the intermittent flow extraction assembly, the tooth chip separation module being arranged on one side of the inner wall of the housing (1) and being in communication with the filtrate module, the tooth chip separation module being used to separate and discharge the fine tooth chips filtered by the filtrate module; The intermittent pumping assembly comprises a fixed sleeve (6) fixedly mounted on one side of the interior of the housing (1), and a T-bar (7) fixedly mounted on one side of the top of the shell cover (2); a movable sleeve (8) is movably mounted on the bottom of the T-bar (7); a piston (10) adapted to the interior of the fixed sleeve (6) is provided at the bottom of the movable sleeve (8); a plurality of meshing tooth grooves (24) are provided on one side of the movable sleeve (8); a rotating rod (16) is rotatably mounted on one side of the interior of the housing (1); a fixed sleeve on one side of the rotating rod (16) is provided with a trigger wheel (17); a plurality of trigger teeth (23) adapted to the meshing tooth grooves (24) are provided on one side of the outer surface of the trigger wheel (17); a fixed sleeve on one side of the output shaft (5) is provided with a driving wheel (20) for adjusting the rotation of the trigger wheel (17); a first liquid extraction tube (12) is provided on one side of the fixed sleeve (6); and a first liquid extraction tube (12) is provided on the other side of the fixed sleeve (6). A liquid discharge pipe (14) is provided, a second liquid extraction pipe (13) is provided at the middle of the bottom of the fixed sleeve (6), a slag discharge pipe (15) is obliquely provided on one side of the bottom of the fixed sleeve (6), a plurality of first triggering columns (18) and a plurality of second triggering columns (19) are arranged circumferentially on one side of the trigger wheel (17), a driving rod (21) is provided on one side of the driving wheel (20), the driving rod (21) is adapted to the first triggering column (18), a U-shaped driving groove (22) is further provided on one side of the driving wheel (20), the U-shaped driving groove (22) is adapted to the second triggering column (19), when the output shaft (5) rotates one circle, the driving rod (21) is driven to contact the first triggering column (18), and then the trigger wheel (17) is driven to rotate, and the U-shaped driving groove (22) is then engaged with the second triggering column (19), driving the second triggering column (19) to drive the trigger wheel (17) to continue rotating.

2. The precision reducer structure for a positioning device according to claim 1, characterized in that: The bottom surface of the T-bar (7) is sleeved with a first return spring (9), and the bottom surface of the first return spring (9) is fixedly connected to a surface of the movable sleeve (8) close to the piston (10).

3. The precision reducer structure for a positioning device according to claim 2, characterized in that: The first liquid extraction pipe (12) is arranged in a downwardly inclined shape, with one side of the first liquid extraction pipe (12) close to the inner bottom surface of the shell (1); the liquid outlet pipe (14) is arranged in an upwardly inclined shape, and the liquid outlet pipe (14) can be directly connected to the interior of the shell (1).

4. The precision reducer structure for a positioning device according to claim 3, characterized in that: A plurality of interconnected flow pipes can be embedded in the inner wall of the shell (1), and an inlet is provided above the shell (1). The liquid outlet pipe (14) can extend to the inner wall of the shell (1) and be connected to the flow pipe. One side of the plurality of flow pipes is respectively provided through the shell (1), and the penetration positions of the plurality of flow pipes correspond to the meshing positions of the reduction gear set (4).

5. The precision speed reducer structure for a positioning device according to claim 4, characterized in that: One-way valves for inflow but not outflow are provided inside the first liquid extraction pipe (12) and the second liquid extraction pipe (13), and one-way valves for outflow but not inflow are provided inside the liquid outlet pipe (14).

6. The precision speed reducer structure for a positioning device according to claim 1, characterized in that: The filtrate module comprises a filter screen (25) fixedly mounted on one side of the liquid outlet pipe (14). During the process of liquid discharge from the liquid outlet pipe (14), the filter screen (25) filters tooth chips, and the chips are deposited on the bottom of the fixed sleeve (6) near the side of the slag discharge pipe (15) under the downward pressure of the hydraulic oil.

7. The precision speed reducer structure for a positioning device according to claim 6, characterized in that: A sliding plate (26) is slidably mounted on one side of the interior of the fixed sleeve (6), a sealing block (27) for sealing the slag discharge pipe (15) is provided at the bottom of the sliding plate (26), a sealing strip is provided at the sealing position between the sealing block (27) and the slag discharge pipe (15), a movable trigger rod (28) is movably mounted on one side of the top of the sliding plate (26), a second return spring (29) is provided on one side of the movable trigger rod (28) embedded in the sliding plate (26), the other end of the second return spring (29) is fixedly connected to the top side of the interior of the sliding plate (26), both sides of the movable trigger rod (28) are inclined, an L-shaped rod (11) is provided on one side of the bottom of the piston (10), one side of the L-shaped rod (11) is set to be arc-shaped, the L-shaped rod (11) is adapted to the movable trigger rod (28), and the top of the travel of the sliding plate (26) is located at the bottom end of the filter screen (25).

8. The precision speed reducer structure for a positioning device according to claim 1, characterized in that: One side of the slag discharge pipe (15) penetrates the inner wall of the shell (1), and the tooth chip separation module includes a filter room (34) arranged on one side of the inner wall of the shell (1). A filter plate (30) is obliquely arranged at the bottom of the filter room (34), and a guide bucket (31) is arranged at the bottom of the filter plate (30). A collection trough (33) is provided on the bottom inner wall of the shell (1), and a connecting pipe (32) is provided at the bottom of the guide bucket (31). The connecting pipe (32) is connected to the collection trough (33). The bottom of the second liquid extraction pipe (13) penetrates the bottom inner wall of the shell (1) and is used to absorb lubricating oil inside the collection trough (33).

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