CN112360836A - Hydraulic transmission structure - Google Patents
Hydraulic transmission structure Download PDFInfo
- Publication number
- CN112360836A CN112360836A CN202011373815.6A CN202011373815A CN112360836A CN 112360836 A CN112360836 A CN 112360836A CN 202011373815 A CN202011373815 A CN 202011373815A CN 112360836 A CN112360836 A CN 112360836A
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- Prior art keywords
- driving
- spiral
- oil
- driven
- shell
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a hydraulic transmission structure, which comprises a power input device and a power output device; wherein the driving rotary sleeve of the power input device rotationally extrudes oil in the input shell, so that the oil enters the output shell through the first oil pipe to push the driven spiral sleeve to rotate, thereby driving the driven shaft to rotate, simultaneously returning the oil liquid in the output shell to the input shell through the second oil pipe, so that the oil liquid flows back and forth between the power input device and the power output device to conduct power, the power of the driving shaft is transmitted to the driven shaft, high-precision and stable transmission is realized, meanwhile, the output end of the mechanical arm and other equipment does not need to bear the weight of the whole transmission structure at the same time, only needs to bear the weight of the power output device, improves the flexibility of the whole mechanical arm and other equipment, and the torque of the power input device can be improved according to the requirement, and the lengths of the first oil pipe and the second oil pipe can be freely set according to the use condition, so that long-distance transmission is realized.
Description
Technical Field
The present invention relates to a transmission structure, and more particularly, it relates to a hydraulic transmission structure.
Background
In the robot industry, manipulator joints and power output components at tail ends, a RV reducer and servo motor combination device is generally adopted as output power, and the defects are that the weight is heavy, the size is large, for example, a power device with larger output power (the heavier the self weight) is required to be adopted at the tail end of a manipulator, and the consumed power born by the middle joint power output device and the lower joint power output device which are used for operating the tail end of the manipulator is correspondingly increased, so that the limitation is large.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a hydraulic transmission structure.
In order to achieve the purpose, the invention provides the following technical scheme:
a hydraulic transmission structure comprises a power input device and a power output device;
the power input device comprises an input shell with a driving oil outlet and a driving oil inlet, and a driving rotating sleeve and a driving shaft connected with a motor are arranged in the input shell; one end of the driving shaft is matched with the driving rotating sleeve; the power output device comprises an output shell with a driven oil outlet and a driven oil inlet, and a driven screw sleeve and a driven shaft connected with a driven part are arranged in the output shell; one end part of the driven shaft is matched with the driven spiral sleeve; the driving oil outlet is communicated with the driven oil inlet through a first oil pipe, and the driving oil inlet is communicated with the driven oil outlet through a second oil pipe; when the driving shaft drives the driving rotary sleeve to rotate, the driving rotary sleeve rotationally extrudes oil in the input shell, so that the oil enters the output shell through the first oil pipe to push the driven spiral sleeve to rotate, the driven shaft is driven to rotate, and meanwhile, the oil in the output shell flows back into the input shell through the second oil pipe.
The invention further provides that: the outer side wall of one end part of the driving rotary sleeve is provided with a driving spiral piston rod, and the other end part of the driving spiral piston rod is matched with a shell hole of the input shell; the input shell is also provided with a driving upper spiral oil cylinder communicated with the driving oil inlet and a driving lower spiral oil cylinder communicated with the driving oil outlet, one end part of the driving spiral piston rod is arranged in the driving upper spiral oil cylinder, and the other end part of the driving spiral piston rod is arranged in the driving lower spiral oil cylinder; when the driving rotary sleeve drives the driving spiral piston rod to extrude into the driving lower spiral oil cylinder, oil in the driving lower spiral oil cylinder enters the output shell through the first oil pipe.
The invention further provides that: the outer side wall of the driving rotary sleeve is provided with a first spiral rolling way, the inner side wall of the shell hole is provided with a second spiral rolling way matched with the first spiral rolling way, the first spiral rolling way is connected with the second spiral rolling way through balls, and when the driving rotary sleeve rotates, the driving rotary sleeve is pushed to perform spiral movement relative to the input shell.
The invention further provides that: the driving shaft drives the driving rotary sleeve to rotate through the balls.
The invention further provides that: the number of the first linear raceways and the number of the second linear raceways are two or more, and the first linear raceways and the second linear raceways correspond to each other one by one.
The invention has the beneficial effects that: when the driving shaft drives the driving rotary sleeve to rotate, the driving rotary sleeve rotationally extrudes oil in the input shell, so that the oil enters the output shell through the first oil pipe to push the driven spiral sleeve to rotate, thereby driving the driven shaft to rotate, and simultaneously the oil in the output shell flows back into the input shell through the second oil pipe, so that the oil flows back and forth between the power input device and the power output device to conduct power, the power of the driving shaft is transmitted to the driven shaft, high-precision and stable transmission is realized, meanwhile, the power input device and the power output device are separately installed, namely, the power output device is installed at the middle part or the tail end of equipment such as a mechanical arm, the power input device is installed at the bottom of the equipment such as the mechanical arm or other positions, the output end of the equipment such as the mechanical arm does not need to simultaneously bear the weight of the whole transmission, the flexibility of equipment such as whole manipulators is improved to can improve power input device's moment of torsion as required, first oil pipe and second oil pipe length can carry out the free settlement according to the in service behavior moreover, realize remote transmission.
Drawings
FIG. 1 is a schematic structural diagram of a hydraulic transmission structure according to the present invention;
FIG. 2 is a schematic structural view of the power input apparatus with the input housing removed;
FIG. 3 is a schematic structural view of the power take-off with the output housing removed;
FIG. 4 is a schematic view of an assembly structure of the driving spiral piston rod with the driving upper spiral oil cylinder and the driving lower spiral oil cylinder;
FIG. 5 is a schematic structural diagram of an input housing;
FIG. 6 is a schematic structural view of the driving rotary sleeve;
fig. 7 is a schematic structural view of the driving shaft.
Description of reference numerals: 1. a power input device; 11. an input housing; 111. a driving oil outlet; 112. an active oil inlet; 113. a housing bore; 114. a second spiral raceway; 12. a driving rotary sleeve; 121. a first linear raceway; 122. a first spiral raceway; 13. a drive shaft; 131. a second linear raceway; 14. a driving helical piston rod; 15. actively mounting a spiral oil cylinder; 16. a spiral oil cylinder is actively driven; 2. a power take-off; 21. an output housing; 211. a driven oil outlet; 212. a driven oil inlet; 22. a driven screw sleeve; 23. a driven shaft; 24. a driven helical piston rod; 25. a driven upper spiral oil cylinder; 26. a driven lower spiral oil cylinder; 3. a first oil pipe; 4. a second oil pipe.
Detailed Description
A hydraulic transmission structure according to the present invention will be described in further detail with reference to fig. 1 to 7.
As can be seen from fig. 1, a hydraulic transmission structure comprises a power input device 1 and a power output device 2, wherein the power input device 1 and the power output device 2 are identical in structure, wherein the power input device 1 comprises an input housing 11 with a driving oil outlet 111 and a driving oil inlet 112, and as can be seen from fig. 2, a driving rotating sleeve 12 and a driving shaft 13 connected with a motor are arranged in the input housing 11; a first linear raceway 121 is arranged on the inner side wall of the driving rotary sleeve 12, a second linear raceway 131 matched with the first linear raceway 121 is arranged at one end of the driving shaft 13, the second linear raceway 131 is connected with the first linear raceway 121 through balls, and the driving shaft 13 drives the driving rotary sleeve 12 to rotate through the balls, so that the driving shaft 13 is matched with the driving rotary sleeve 12; the number of the first linear roller paths 121 and the number of the second linear roller paths 131 are two or more, the first linear roller paths 121 correspond to the second linear roller paths 131 one by one, the first linear roller paths 121 are uniformly distributed on the inner side wall of the driving rotary sleeve 12, so that the driving shaft 13 is matched with the driving rotary sleeve 12 more stably and reliably, the first linear roller paths 121 are arranged along the axial direction of the driving rotary sleeve 12, and the second linear roller paths 131 are arranged along the axial direction of the driving shaft 13.
The outer side wall of one end part of the driving rotary sleeve 12 is provided with a driving spiral piston rod 14, and the other end part of the driving spiral piston rod is matched with a shell hole 113 of the input shell 11; the input shell 11 is further provided with an active upper spiral oil cylinder 15 communicated with an active oil inlet 112 and an active lower spiral oil cylinder 16 communicated with an active oil outlet 111, one end of the active spiral piston rod 14 is arranged in the active upper spiral oil cylinder 15, the other end of the active spiral piston rod is arranged in the active lower spiral oil cylinder 16, and when the active shaft 13 drives the active rotary sleeve 12 to rotate, the active rotary sleeve 12 drives the active spiral piston rod 14 to rotate and extrude oil liquid in the input shell 11, so that the oil liquid flows out from the active oil outlet 111.
The outer side wall of the driving rotary sleeve 12 is provided with a first spiral raceway 122, the inner side wall of the housing hole 113 is provided with a second spiral raceway 114, the first spiral raceway 122 is connected with the second spiral raceway 114 through balls, and when the driving rotary sleeve 12 rotates, the driving rotary sleeve 12 is pushed to perform spiral movement relative to the input housing 11, so that the driving spiral piston rod 14 is driven to perform spiral movement, and the driving spiral piston rod 14 can move in the driving upper spiral cylinder 15 and the driving lower spiral cylinder 16.
As can be seen from fig. 3, the power output device 2 also comprises an output housing 21 with a driven oil outlet 211 and a driven oil inlet 212, and a driven screw sleeve 22 and a driven shaft 23 connected with a driven member are arranged in the output housing 21; one end part of the driven shaft 23 is matched with the driven spiral sleeve 22, and the matching structure of the driven shaft and the driven spiral sleeve is the same as the matching structure of the driving shaft 13 and the driving rotary sleeve 12, so the details are not repeated; a driven screw piston rod 24 is also provided at one end of the driven screw sleeve 22, and the other end is engaged with the output housing 21, and the engaging structure is the same as that of the driving screw sleeve 12 and the input housing 11, and will not be described herein again.
The output housing 21 is also provided with a driven upper spiral oil cylinder 25 communicated with a driven oil inlet 212 and a driven lower spiral oil cylinder 26 communicated with a driven oil outlet 211, one end part of the driven spiral piston rod 24 is arranged in the driven upper spiral oil cylinder 25, and the other end part is arranged in the driven lower spiral oil cylinder 26.
The driving oil outlet 111 is communicated with a driven oil inlet 212 through a first oil pipe 3, and the driving oil inlet 112 is communicated with a driven oil outlet 211 through a second oil pipe 4; when the driving shaft 13 drives the driving rotary sleeve 12 to rotate, because the second linear rolling way 131 is connected with the first linear rolling way 121 through balls, the driving shaft 13 drives the driving rotary sleeve 12 to rotate through balls, and at the same time, the first spiral rolling way 122 is also connected with the second spiral rolling way 114 through balls, when the driving rotary sleeve 12 rotates, the driving rotary sleeve 12 is pushed to perform spiral movement relative to the input housing 11, so that the driving rotary sleeve 12 drives the driving spiral piston rod 14 to perform spiral movement, so that the driving spiral piston rod 14 is extruded into the driving lower spiral cylinder 16, so that oil in the driving lower spiral cylinder 16 enters the driven lower spiral cylinder 26 of the output housing 21 through the first oil pipe 3, the driving spiral piston rod 14 is pushed to move from the driven lower spiral cylinder 26 to drive the driven spiral sleeve 22 to perform spiral movement relative to the output housing 21, thereby driving the driven shaft 23 to rotate, simultaneously returning oil in the driven upper spiral oil cylinder 25 of the output shell 21 to the driving upper spiral oil cylinder 15 of the input shell 11 through the second oil pipe 4, leading the oil to flow back and forth between the power input device 1 and the power output device 2 for power transmission, transmitting the power of the driving shaft 13 to the driven shaft 23, realizing high-precision and stable transmission, simultaneously, the power input device 1 and the power output device 2 are separately installed, namely, the power output device 2 is installed at the middle part or the tail end of equipment such as a mechanical arm, and the power input device 1 is installed at the bottom or other positions of the equipment such as the mechanical arm, so that the output end of the equipment such as the mechanical arm does not need to bear the weight of the whole transmission structure at the same time, only needs to bear the weight of the power output device 2, the flexibility of the equipment such as the mechanical arm, moreover, the lengths of the first oil pipe 3 and the second oil pipe 4 can be freely set according to the use condition, so that long-distance transmission is realized.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. The utility model provides a hydraulic transmission structure which characterized by: comprises a power input device and a power output device
The power input device comprises an input shell with a driving oil outlet and a driving oil inlet, and a driving rotating sleeve and a driving shaft connected with a motor are arranged in the input shell; one end of the driving shaft is matched with the driving rotating sleeve;
the power output device comprises an output shell with a driven oil outlet and a driven oil inlet, and a driven screw sleeve and a driven shaft connected with a driven part are arranged in the output shell; one end part of the driven shaft is matched with the driven spiral sleeve;
the driving oil outlet is communicated with the driven oil inlet through a first oil pipe, and the driving oil inlet is communicated with the driven oil outlet through a second oil pipe;
when the driving shaft drives the driving rotary sleeve to rotate, the driving rotary sleeve rotationally extrudes oil in the input shell, so that the oil enters the output shell through the first oil pipe to push the driven spiral sleeve to rotate, the driven shaft is driven to rotate, and meanwhile, the oil in the output shell flows back into the input shell through the second oil pipe.
2. A hydraulic transmission arrangement as claimed in claim 1, wherein: the outer side wall of one end part of the driving rotary sleeve is provided with a driving spiral piston rod, and the other end part of the driving spiral piston rod is matched with a shell hole of the input shell;
the input shell is also provided with a driving upper spiral oil cylinder communicated with the driving oil inlet and a driving lower spiral oil cylinder communicated with the driving oil outlet, one end part of the driving spiral piston rod is arranged in the driving upper spiral oil cylinder, and the other end part of the driving spiral piston rod is arranged in the driving lower spiral oil cylinder;
when the driving rotary sleeve drives the driving spiral piston rod to extrude into the driving lower spiral oil cylinder, oil in the driving lower spiral oil cylinder enters the output shell through the first oil pipe.
3. A hydraulic transmission arrangement as claimed in claim 2, wherein: the outer side wall of the driving rotary sleeve is provided with a first spiral rolling way, the inner side wall of the shell hole is provided with a second spiral rolling way matched with the first spiral rolling way, the first spiral rolling way is connected with the second spiral rolling way through balls, and when the driving rotary sleeve rotates, the driving rotary sleeve is pushed to carry out spiral movement relative to the input shell.
4. A hydraulic transmission according to claim 1, 2 or 3, wherein: the driving shaft drives the driving rotary sleeve to rotate through the balls.
5. The hydraulic transmission structure of claim 4, wherein: the number of the first linear raceways and the number of the second linear raceways are two or more, and the first linear raceways and the second linear raceways correspond to each other one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373815.6A CN112360836A (en) | 2020-11-30 | 2020-11-30 | Hydraulic transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373815.6A CN112360836A (en) | 2020-11-30 | 2020-11-30 | Hydraulic transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112360836A true CN112360836A (en) | 2021-02-12 |
Family
ID=74536603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011373815.6A Pending CN112360836A (en) | 2020-11-30 | 2020-11-30 | Hydraulic transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112360836A (en) |
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2020
- 2020-11-30 CN CN202011373815.6A patent/CN112360836A/en active Pending
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