CN108253121B - Self-lubricating RV speed reducer - Google Patents
Self-lubricating RV speed reducer Download PDFInfo
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- CN108253121B CN108253121B CN201810059405.0A CN201810059405A CN108253121B CN 108253121 B CN108253121 B CN 108253121B CN 201810059405 A CN201810059405 A CN 201810059405A CN 108253121 B CN108253121 B CN 108253121B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
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Abstract
The invention discloses a self-lubricating RV reducer, which comprises a reducer shell, a crankshaft arranged in the reducer shell and an automatic greasing system, wherein the crankshaft is arranged in the reducer shell; the automatic greasing system comprises a grease storage barrel for storing lubricating grease, a spray head for spraying the lubricating grease into a crankshaft, a grease conveying pipe for connecting the grease storage barrel and the spray head, an oil pump connected to the grease conveying pipe and used for driving the lubricating grease to flow, a driving motor used for driving the oil pump and a controller used for controlling the driving motor, wherein a grease flow channel for lubricating the lubricating grease flowing to a kinematic pair in a reducer shell is arranged in the crankshaft, the spray head is positioned on the reducer shell, and the outlet end of the spray head corresponds to the inlet end of the grease flow channel; the invention can automatically fill lubricating grease, save labor, reduce the influence of human factors, ensure the full lubrication of each kinematic pair and prolong the service life of the speed reducer.
Description
Technical Field
The invention relates to an RV reducer, in particular to a self-lubricating RV reducer.
Background
The RV reducer is small in size, light in weight, large in speed ratio, high in rigidity, stable in starting, accurate in positioning and strong in controllability, and therefore the RV reducer is widely applied to joints of industrial robots and used for achieving accurate transmission of motion and instructions and finishing precise and complex work. The RV transmission is a novel multi-stage planetary transmission, the high-speed stage is K-H type involute planetary gear transmission, and the low-speed stage is K-H-V type cycloid pin gear planetary transmission. The RV reducer is lubricated by semisolid lubricating grease mostly in the conventional lubricating mode, and a certain amount of lubricating grease is manually and periodically filled into the RV reducer for lubrication and maintenance. The lubricating mode has many defects, firstly, the lubricating grease has poor fluidity, and after the lubricating grease is filled into the reducer to work for a period of time, the lubricating grease is unevenly distributed, the lubrication at a kinematic pair is insufficient, and the service life of the RV reducer is influenced. Secondly, the lubricating grease is unevenly distributed, and the lubricating of part of kinematic pairs is excessive, so that the lubricating grease is wasted; thirdly, in order to ensure that the transmission precision of the speed reducer has strict limitation on the times of disassembly and assembly, the manual filling of lubricating grease at regular intervals consumes manpower, and the like, and the problems of influence of human factors exist.
Disclosure of Invention
In view of this, the present invention provides a self-lubricating RV reducer, which can automatically fill lubricating grease, save labor, reduce the influence of human factors, ensure sufficient lubrication of each kinematic pair, and prolong the service life of the reducer.
The invention discloses a self-lubricating RV reducer, which comprises a reducer shell, a crankshaft arranged in the reducer shell and an automatic greasing system, wherein the crankshaft is arranged in the reducer shell; the automatic greasing system comprises a grease storage barrel for storing lubricating grease, a spray head for spraying the lubricating grease into the crankshaft, a grease conveying pipe for connecting the grease storage barrel and the spray head, an oil pump connected to the grease conveying pipe and used for driving the lubricating grease to flow, a driving motor used for driving the oil pump and a controller used for controlling the driving motor, wherein a grease flow channel for lubricating the lubricating grease flowing to a kinematic pair in a reducer shell is arranged in the crankshaft, the spray head is positioned on the reducer shell, and the outlet end of the spray head corresponds to the inlet end of the grease flow channel.
Furthermore, the spray head comprises a shell, and a spray nozzle, a sliding chute and an elastic piece which are arranged in the shell, wherein a grease flow cavity is arranged in the shell, one end of the grease flow cavity is connected with the grease delivery pipe, and the other end of the grease flow cavity is connected with the grease flow channel; the nozzle is supported by the chute and driven by the chute to move axially along the grease flow cavity, a nozzle pipeline is arranged in the nozzle, an openable blocking piece for opening and closing the nozzle pipeline is arranged on the chute, and when the oil pressure in the grease flow cavity is greater than a set value, the openable blocking piece is opened to enable lubricating grease in the grease flow cavity to flow into the nozzle pipeline and flow to the grease flow channel.
Furthermore, the openable blocking piece is a baffle plate assembly arranged at the top of the sliding groove, and the baffle plate assembly is hinged to the sliding groove and is controlled to be opened and closed by a torsion spring; the elastic piece is an extension spring; the stiffness of the torsion spring is greater than the stiffness of the extension spring.
Further, the speed reducer shell is internally provided with a mounting hole matched with the shell in a form-fitting mode, and the nozzle is inserted into or separated from the crankshaft from the inlet end of the grease flow channel in the axial movement process of the grease flow cavity.
Further, the grease flow channel comprises a main flow channel arranged along the axial direction of the shaft body of the crankshaft, and a first branch flow channel and a second branch flow channel arranged along the radial direction of the shaft body, the main flow channel is communicated with the first branch flow channel and the second branch flow channel, the second branch flow channel is arranged between the connecting portion of the shaft body and the cycloid wheel, and an injection port for inserting a nozzle is arranged at the inlet end of the main flow channel.
Further, the nozzle pipeline is in a conical pipeline shape which is gradually reduced along the direction of the grease flow, the outlet end of the nozzle is provided with an arc-shaped surface structure, and the injection port is in an arc-shaped groove structure which is adaptive to the nozzle.
Furthermore, a grease guide frame is also arranged in the shell of the speed reducer; the support body of the grease guide frame is mounted on the input shaft of the speed reducer through a bearing, the left side and the right side of the grease guide frame are provided with special-shaped holes adaptive to the shape of cycloidal gears of the speed reducer, the upper side and the lower side of the support body are provided with round holes for the shaft body to pass through, the round holes are matched with the shaft body and the two cycloidal gears to form a grease guide cavity, the grease guide cavity is communicated with the second branch flow channel, and the upper part and the lower part of the grease guide cavity are respectively provided with a first; the outer wall of the shaft body is provided with a blocking piece which is located in the same circumferential direction with the second branch flow channel, and the blocking piece is located in the grease guide cavity and used for guiding lubricating grease flowing out of the second branch flow channel into the first flow channel and the second flow channel.
Furthermore, a necking structure which is gradually reduced along the grease flowing direction is arranged at the joint of the first flow passage or the second flow passage and the grease guide cavity.
Further, the controller includes a first timer and a second timer; the first timer is connected with a servo motor and a driving motor of the speed reducer and used for measuring and recording the working time of the servo motor and sending a starting signal to the driving motor when a set lubricating period is reached and the servo motor stops; the position of the grease flow channel at the rear end of the oil pump is connected with an electromagnetic valve; and the second timer is connected with the driving motor and the electromagnetic valve and is used for measuring and recording the working time of the driving motor, sending a stop signal to the driving motor and sending a switching signal to the electromagnetic valve after the set time is reached.
Furthermore, an overflow valve for preventing overload is further arranged at the position, located at the rear end of the oil pump, of the grease flow channel.
The invention has the beneficial effects that:
according to the self-lubricating RV speed reducer, due to the fact that the automatic greasing system is additionally arranged, under the non-working state of the speed reducer, lubricating grease in the grease storage barrel can be conveyed into the speed reducer by the automatic greasing system to be automatically lubricated; specifically, after the controller satisfies preset state or receives manual instruction, it sends actuating signal to driving motor, driving motor starts and drives the oil pump, the lubricating grease in the fat storage bucket flows to the shower nozzle along the fat circulation passageway under the oil pump effect, because the shower nozzle is corresponding with the fat circulation passageway of bent axle under this state, lubricating grease flows the kinematic pair department in the reduction gear shell through the fat circulation passageway promptly and lubricates, realize automatic filling lubricating grease from this, the manpower is saved, reduce the influence of human factor, guarantee the abundant lubrication of each kinematic pair, promote the life of reduction gear.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a showerhead according to the present invention;
FIG. 3 is a schematic structural view of a crankshaft of the present invention;
fig. 4 is a sectional view taken along line a-a of fig. 1.
Detailed Description
As shown in fig. 1 to 4: the self-lubricating RV reducer of the embodiment comprises a reducer shell 18, a crankshaft 2 arranged in the reducer shell 18 and an automatic greasing system; the automatic greasing system comprises a grease storage barrel 5 for storing lubricating grease, a nozzle 1 for spraying the lubricating grease into a crankshaft, a grease conveying pipe 19 for connecting the grease storage barrel 5 and the nozzle 1, an oil pump 7 connected to the grease conveying pipe 19 and used for driving the lubricating grease to flow, a driving motor 6 used for driving the oil pump 7 and a controller used for controlling the driving motor 6, wherein a grease passage for lubricating the lubricating grease to flow to a kinematic pair in a reducer shell 18 is arranged in the crankshaft 2, the nozzle 1 is positioned on the reducer shell 18, and the outlet end of the nozzle 1 corresponds to the inlet end of the grease passage; besides the crankshaft, other components similar to those in the prior art, such as the main bearing 11, the crankshaft bearing 12, the input shaft 13, the input gear 14, the planet gear 15, the cycloidal gear 16 and the pin gear 17 shown in fig. 1, are installed in the reducer housing 18, and the structures and the action principles of these components are consistent with those in the prior art, and are not described herein again; the controller can be a single chip microcomputer or other mechanisms capable of realizing automatic control; the grease flow channel of the crankshaft is communicated with the related kinematic pair in the reducer shell 18; because the automatic greasing system is additionally arranged, the automatic greasing system can convey the lubricating grease in the grease storage barrel 5 into the speed reducer for automatic lubrication in the non-working state of the speed reducer; specifically, when the controller meets a preset state or receives a manual instruction, the controller sends a starting signal to the driving motor 6, the driving motor 6 starts and drives the oil pump 7, and the lubricating grease in the grease storage barrel 5 flows to the sprayer 1 along the grease flow channel under the action of the oil pump 7.
In this embodiment, as shown in fig. 2, the nozzle 1 includes a housing 103, and a nozzle 101, a chute 108 and an elastic member 107 which are arranged in the housing 103, wherein a grease flow cavity 104 is arranged in the housing 103, one end of the grease flow cavity 104 is connected to the grease delivery pipe 19, and the other end is connected to the grease flow channel; the elastic part 107 is fixed in the grease flow cavity 104 and can be subjected to telescopic deformation along the axial direction of the grease flow cavity 104, the chute 108 is supported by the elastic part 107 and can be driven by grease flow pressure to move along the axial direction of the grease flow cavity 104 and simultaneously drive the elastic part 107 to be subjected to telescopic deformation, the nozzle 101 is supported by the chute 108 and is driven by the chute 108 to move along the axial direction of the grease flow cavity 104, the nozzle pipeline 102 is arranged in the nozzle 101, an openable blocking part for opening and closing the nozzle pipeline 102 is arranged on the chute 108, and when the oil pressure in the grease flow cavity 104 is greater than a set value, the openable blocking part is opened to enable lubricating grease in the grease flow cavity 104 to flow into the nozzle pipeline 102 and flow to the grease flow channel; the shell 103 is used for installing and positioning other components and can be cylindrical; a positioning step is arranged in the shell 103, and the bottom end of the elastic piece 107 is fixed on the positioning step; the chute 108 may be annular and is sleeved in the housing 103; the side wall of the nozzle 101 keeps sealed with the inner wall of the shell 103 to prevent grease leakage; by adopting the structure, the nozzle 101 and the chute 108 can move along the axial direction of the shell 103, so that the nozzle 101 can be accommodated in the shell 103 through contraction, and the operation of the speed reducer cannot be influenced under the non-working state of the automatic greasing system; when the automatic greasing system is started, the pressure of the grease in the grease flow cavity 104 is gradually increased to push the chute 108 and the nozzle 101 to move outwards, the openable stopper is opened when the oil pressure reaches a certain degree, and the grease flows into the nozzle pipe 102 and flows to the grease flow channel; after the grease is added, the grease pressure in the grease flow chamber 104 gradually decreases, and the sliding groove 108 and the nozzle 101 move inward by the elastic member 107 to return to the initial state.
In this embodiment, the openable barrier is a baffle assembly disposed on the top of the sliding slot 108, and the baffle assembly is hinged to the sliding slot 108 and is controlled to open and close by a torsion spring; the elastic piece 107 is an extension spring; the rigidity of the torsion spring is greater than that of the extension spring; the baffle plate assembly comprises a left baffle plate 105 and a right baffle plate 105, wherein the two baffle plates 105 are respectively connected with corresponding torsion springs 106 and are provided with torsion by the torsion springs 106; when the two baffles are closed, the flow of the grease to the nozzle pipe 102 can be blocked, when the oil pressure reaches a certain value, the two baffles 105 are turned over towards the nozzle pipe 102 to be converted into an open state, and the grease can flow to the nozzle pipe 102; of course, the openable barrier may also be an existing check valve.
In this embodiment, the reducer casing 18 has a mounting hole in form fit with the housing 103, and the nozzle 101 is inserted into the crankshaft 2 or separated from the crankshaft 2 from the inlet end of the grease flow passage during the axial movement along the grease flow chamber 104; by adopting the structure, the nozzle 1 is convenient to fix, and the nozzle 1 is also convenient to be matched with the crankshaft; the number of the spray heads 1 is the same as that of the crankshafts 2, and as shown in fig. 1, the speed reducer is provided with two crankshafts 2, so that two spray heads 1 are arranged, and the two spray heads 1 are arranged in parallel; the nozzle 101 can be completely received in the mounting hole when it is detached from the crankshaft, so as to avoid interference with the operation of the reducer.
In this embodiment, as shown in fig. 3, the grease flow channel includes a main flow channel 204 axially disposed along a shaft body 201 of the crankshaft 2, and a first branch flow channel 202 and a second branch flow channel 203 radially disposed along the shaft body 201, the main flow channel 204 is communicated with the first branch flow channel 202 and the second branch flow channel 203, the second branch flow channel 203 is disposed between a connecting portion of the shaft body 201 and the cycloid wheel, and an inlet end of the main flow channel 204 is provided with an injection port 205 for inserting the nozzle 101; the grease flowing out of the first branch flow passage 202 can lubricate the crankshaft bearing 12, the input gear 14 and the planet wheel 15, and the grease flowing out of the second branch flow passage 203 can lubricate the pin gear 17, the bearing of the cycloidal gear 16 and the main bearing 11, so that the grease can lubricate each kinematic pair; three first branch flow passages 202 leading to the surface of the shaft from the shaft center are respectively arranged at the position where the crankshaft bearing is arranged on the shaft body 201, and the included angle between every two adjacent first branch flow passages 202 is 120 degrees; three second branch runners 203 leading to the surface of the shaft from the shaft center are respectively arranged between the connecting parts of the shaft body 201 and the two cycloidal gears, and the included angle between every two adjacent second branch runners 203 is 120 degrees; the lubricating grease in the main runner 204 firstly reaches the second branch runner 203 and then reaches the first branch runner 202, and the pipe diameter of the first branch runner 202 is smaller than that of the second branch runner 203 so as to realize the isobaric outflow of the lubricating grease; the nozzle pipe 102 is in a tapered pipe shape gradually reduced along the direction of the grease flow, the outlet end of the nozzle 101 has an arc-shaped structure, and the injection port 205 is in an arc-shaped groove structure adapted to the nozzle 101 so as to facilitate the positioning of the nozzle 101.
In this embodiment, as shown in fig. 4, a grease guide frame 3 is further disposed in the reducer housing 18, and the grease guide frame 3 can guide the grease flowing out from the second branch flow passage 203 to other kinematic pairs, so that the grease is distributed more uniformly; the frame body 302 of the grease guide frame 3 can be a circular plate or a disc structure; the frame body 302 of the grease guide frame 3 is arranged on the input shaft 13 of the speed reducer through a bearing 301, and the left side and the right side of the grease guide frame 3 are provided with special-shaped holes 307 adaptive to the shape of a cycloidal gear of the speed reducer, so that the grease guide frame 3 can be conveniently arranged; the upper side and the lower side of the frame body are provided with round holes for the shaft body 201 to pass through, the round holes are matched with the shaft body 201 and the two cycloidal gears to form a grease guide cavity 305, the grease guide cavity 305 is communicated with the second branch flow channel 203, and the upper part and the lower part of the grease guide cavity 305 are respectively provided with a first flow channel 303 and a second flow channel 304; a blocking piece which is arranged on the outer wall of the shaft body 201 and is in the same circumferential direction with the second branch flow passage 203 is arranged in the grease guide cavity 305, and is used for guiding lubricating grease flowing out of the second branch flow passage 203 into the first flow passage 303 and the second flow passage 304; the aperture of the round hole is slightly larger than the distance from the blocking edge to the axis of the crankshaft; the first flow passage 303 and the second flow passage 304 respectively guide the lubricating grease to the needle gear 17 and the bearing of the cycloidal gear 16; the three blocking pieces are arranged and staggered with the second branch flow channel 203; the connection between the first flow passage 303 or the second flow passage 304 and the grease guide cavity 305 is provided with a necking structure which is gradually reduced along the grease flow direction, so as to increase the amount of the grease flowing into the two flow passages.
In this embodiment, the controller includes a first timer 4 and a second timer 8; the first timer 4 is connected with a servo motor of the speed reducer and the driving motor 6 and is used for measuring and recording the working time of the servo motor and sending a starting signal to the driving motor 6 when a preset lubricating period is reached and the servo motor stops; the position of the grease flow channel at the rear end of the oil pump 7 is connected with an electromagnetic valve 10; the second timer 8 is connected with the driving motor 6 and the electromagnetic valve 10 and is used for measuring and recording the working time of the driving motor 6, sending a stop signal to the driving motor 6 and sending a switching signal to the electromagnetic valve 10 after the set time is reached; the electromagnetic valve is a 10-position two-position three-way electromagnetic valve, the right position is a normal position, 1YA of the two-position three-way electromagnetic valve is electrified, and the electromagnetic valve is switched to the left position; an overflow valve 9 for preventing overload is further arranged at the position of the grease channel at the rear end of the oil pump 7.
This self-lubricating RV reduction gear of implementing, its concrete working process is:
when the working time of the RV reducer reaches the set time and the RV reducer is idle, the first timer 4 starts the driving motor 6 to drive the oil pump 7 to start pumping lubricating grease into the RV reducer. When the grease is filled in the grease flow cavity 104 of the nozzle 1, the pressure in the grease flow cavity 104 continuously increases, and the sliding groove 108 is pushed to move along the grease flow cavity 104 against the elastic force of the extension spring. Since the stiffness of the extension spring is less than the stiffness of the torsion spring 106, the openable shutter remains closed under the hinge 106 with the torsion spring 106. When the nozzle 101 is moved to the crankshaft injection port 205 position, the nozzle 101 is no longer moving. Grease is continuously added into the grease flow cavity 104, the internal pressure of the grease flow cavity is continuously increased, when the pressure is greater than the elastic force of the torsion spring 106, the two baffles rotate around the hinge 106 with the torsion spring 106 and are flushed away by the grease, the grease flow cavity 104 is communicated with the nozzle pipe 102, namely the main flow passage 204 of the crankshaft, and the grease is injected into the main flow passage 204. As the grease is injected, the grease flows from the main flow channel 204 into the first branch flow channel 202 and the second branch flow channel 203. The grease is continuously added, and the grease in the first branch flow passage 202 overflows to the crankshaft bearing 12, the input gear 14 and the planet gear 15. The grease in the second branch flow passage 203 will overflow into the grease chamber 305 as it were. When the filling time reaches the set time, the second timer 8 cuts off the power supply of the driving motor 6, the electromagnetic valve is electrified, the filling system stops working, and the pipeline is unloaded. At this point, the pressure in the grease flow chamber 104 decreases and the openable barrier automatically closes due to the absence of pressure under the influence of the torsion spring 106. As the pressure in the grease chamber 104 continues to decrease, the slide 108 returns to the initial position under the influence of the extension spring. At this point the filling system is working. When the RV reducer starts to move next time, the crankshaft rotates along with the RV reducer entering a working state, the baffle plate fixedly connected with the crankshaft rotates in the grease guide cavity 305, and lubricating grease in the grease guide cavity 305 is guided into the first flow passage 303 and the second flow passage 304; the lubricating grease in the first flow passage 303 overflows to lubricate the bearing of the cycloidal gear 16 and the crankshaft bearing 6; the grease in the second flow passage 304 overflows to lubricate the bearing of the cycloidal gear 16 of the needle gear 17 and the main bearing 11. As the rotational speed of the RV reducer increases, grease in the main flow passage 204, the first branch flow passage 202, and the second branch flow passage 203 overflows the pipes by the action of centrifugal force. Lubricating grease overflowing from the first branch flow passage 202 can lubricate the crankshaft bearing 12, the input gear 14 and the planet gear 15; the grease in the second branch flow passage 203 enters the grease guide chamber 305305, and is guided into the first flow passage 303 and the second flow passage 304 by the baffle 206, so as to lubricate the bearing of the cycloid wheel 16 and the main bearing 11 of the pin gear 17. At this time, the grease reaches each kinematic pair of the entire RV reducer, and the lubricant lubricates each kinematic pair.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. The utility model provides a self-lubricating RV reduction gear, includes reduction gear housing and establishes the bent axle in reduction gear housing, its characterized in that: the automatic greasing system is also included; the automatic grease adding system comprises a grease storage barrel for storing lubricating grease, a spray head for spraying the lubricating grease into a crankshaft, a grease conveying pipe for connecting the grease storage barrel and the spray head, an oil pump connected to the grease conveying pipe and used for driving the lubricating grease to flow, a driving motor used for driving the oil pump and a controller used for controlling the driving motor, wherein a grease flow channel for lubricating the lubricating grease flowing to a kinematic pair in a reducer shell is arranged in the crankshaft; the nozzle is supported by the chute and driven by the chute to move axially along the grease flow cavity, a nozzle pipeline is arranged in the nozzle, an openable blocking piece for opening and closing the nozzle pipeline is arranged on the chute, and when the oil pressure in the grease flow cavity is greater than a set value, the openable blocking piece is opened to enable lubricating grease in the grease flow cavity to flow into the nozzle pipeline and flow to the grease flow channel.
2. The self-lubricating RV reducer of claim 1, characterized by: the openable blocking piece is a baffle plate assembly arranged at the top of the sliding groove, and the baffle plate assembly is hinged to the sliding groove and is controlled to be opened and closed by a torsion spring; the elastic piece is an extension spring; the stiffness of the torsion spring is greater than the stiffness of the extension spring.
3. The self-lubricating RV reducer of claim 1, characterized by: the speed reducer shell is internally provided with a mounting hole matched with the shell in a form-fitting manner, and the nozzle is inserted into or separated from the crankshaft from the inlet end of the grease flow channel in the axial movement process of the grease flow cavity.
4. The self-lubricating RV reducer of claim 3, characterized by: the grease flow channel comprises a main flow channel arranged along the axial direction of a shaft body of the crankshaft, and a first branch flow channel and a second branch flow channel which are arranged along the radial direction of the shaft body, the main flow channel is communicated with the first branch flow channel and the second branch flow channel, the second branch flow channel is arranged between the connecting portion of the shaft body and the cycloid wheel, and an injection port for inserting a nozzle is arranged at the inlet end of the main flow channel.
5. The self-lubricating RV reducer of claim 4, wherein: the nozzle pipeline is in a conical pipeline shape which is gradually reduced along the direction of the grease flow, the outlet end of the nozzle is provided with an arc surface structure, and the injection port is in an arc groove structure which is adaptive to the nozzle.
6. The self-lubricating RV reducer of claim 4, wherein: a grease guide frame is also arranged in the shell of the speed reducer; the support body of the grease guide frame is mounted on the input shaft of the speed reducer through a bearing, the left side and the right side of the grease guide frame are provided with special-shaped holes adaptive to the shape of cycloidal gears of the speed reducer, the upper side and the lower side of the support body are provided with round holes for the shaft body to pass through, the round holes are matched with the shaft body and the two cycloidal gears to form a grease guide cavity, the grease guide cavity is communicated with the second branch flow channel, and the upper part and the lower part of the grease guide cavity are respectively provided with a first; the outer wall of the shaft body is provided with a blocking piece which is located in the same circumferential direction with the second branch flow channel, and the blocking piece is located in the grease guide cavity and used for guiding lubricating grease flowing out of the second branch flow channel into the first flow channel and the second flow channel.
7. The self-lubricating RV reducer of claim 6, wherein: and a necking structure which is gradually reduced along the grease flowing direction is arranged at the joint of the flow channel I or the flow channel II and the grease guide cavity.
8. The self-lubricating RV reducer of any of claims 1-7, characterized by: the controller comprises a first timer and a second timer; the first timer is connected with a servo motor and a driving motor of the speed reducer and used for measuring and recording the working time of the servo motor and sending a starting signal to the driving motor when a set lubricating period is reached and the servo motor stops; the position of the grease flow channel at the rear end of the oil pump is connected with an electromagnetic valve; and the second timer is connected with the driving motor and the electromagnetic valve and is used for measuring and recording the working time of the driving motor, sending a stop signal to the driving motor and sending a switching signal to the electromagnetic valve after the set time is reached.
9. The self-lubricating RV reducer of claim 8, wherein: the position of the grease flow channel at the rear end of the oil pump is also provided with an overflow valve for preventing overload.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810059405.0A CN108253121B (en) | 2018-01-22 | 2018-01-22 | Self-lubricating RV speed reducer |
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| CN201810059405.0A CN108253121B (en) | 2018-01-22 | 2018-01-22 | Self-lubricating RV speed reducer |
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| CN108253121B true CN108253121B (en) | 2020-11-13 |
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| WO2021046795A1 (en) * | 2019-09-12 | 2021-03-18 | Abb Schweiz Ag | Robot, connection assembly and assembly method thereof |
| CN110594366A (en) * | 2019-09-23 | 2019-12-20 | 清华大学苏州汽车研究院（吴江） | Cycloidal pin gear speed reducer with oil dynamic lubrication and cooling |
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| DE102005010322A1 (en) * | 2005-03-03 | 2006-09-14 | Volkswagen Ag | Oil lubrication system for input shaft of double-clutch gearbox of vehicle, includes pressure disc and additional cup assuring oil entry into hollow gear shaft |
| CN201177039Y (en) * | 2008-03-28 | 2009-01-07 | 宁波东力机械制造有限公司 | Internal bearing lubrication structure of changeable speed ratio wheel box |
| JP4697299B2 (en) * | 2008-12-19 | 2011-06-08 | トヨタ自動車株式会社 | Oil supply mechanism of power transmission device |
| CN202349169U (en) * | 2011-12-08 | 2012-07-25 | 贵州凯星液力传动机械有限公司 | Cooling lubrication system used for big drop distance transfer case testing |
| GB201222203D0 (en) * | 2012-12-11 | 2013-01-23 | Rolls Royce Deutschland | Lubricant system |
| CN108869023B (en) * | 2016-08-20 | 2020-05-01 | 泉州鑫豪工程机械科技有限公司 | Self-lubricating system of power takeoff |
| CN106594254A (en) * | 2017-02-14 | 2017-04-26 | 哈尔滨东安发动机（集团）有限公司 | Bearing lubricating structure |
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