CN216342554U - Inner curve hydraulic motor with bidirectional oil distribution - Google Patents
Inner curve hydraulic motor with bidirectional oil distribution Download PDFInfo
- Publication number
- CN216342554U CN216342554U CN202121803939.3U CN202121803939U CN216342554U CN 216342554 U CN216342554 U CN 216342554U CN 202121803939 U CN202121803939 U CN 202121803939U CN 216342554 U CN216342554 U CN 216342554U
- Authority
- CN
- China
- Prior art keywords
- oil distribution
- oil
- distribution
- rotor
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a bidirectional oil distribution inner curve hydraulic motor, which comprises two mutually fixed rotors, a casing sleeved on each rotor and an oil distribution seal cover connected between the two casings, wherein each casing comprises an output seal cover and a stator body, the output seal cover is fixed on the stator body, a curve guide rail is arranged in the stator body, an even number of cylinder holes are uniformly distributed on the rotors along the circumferential direction, plungers distributed in the radial direction are arranged in each cylinder hole, the top ends of the plungers are connected with rollers, the peripheral surfaces of the rollers are contacted with the inner curved surface of the curve guide rail, an oil distribution mechanism for distributing oil to the cylinder holes is arranged between each rotor and the oil distribution seal cover, and the two oil distribution mechanisms are respectively positioned at two sides of the oil distribution seal cover; the advantage has realized two-way oil of joining in marriage in motor middle part for motor structure is compacter, and it is higher to join in marriage a class efficiency, and the performance is more reliable.
Description
Technical Field
The utility model relates to the technical field of hydraulic motors, in particular to an inner curve hydraulic motor with bidirectional oil distribution.
Background
With the increasingly wide application of the integrated hydraulic technology in the hydraulic industry, a plurality of manufacturers put higher requirements on the inner curve hydraulic motor, and the flow distribution efficiency, the volume efficiency, the reliability and the service life of the inner curve hydraulic motor are expected to be further improved; the power-weight ratio can be further improved, the unnecessary size and weight are greatly reduced, various specifications and installation sizes can be provided, the inner curve hydraulic motor can bear higher pressure, larger torque is output, and the weight of unit power can be lighter. The existing motor with the inner curve motor displacement exceeding 15000mL has the axial and radial dimension sharply increased, and the use requirement of the motor is difficult to meet in the application occasions with higher requirements on the dimension of injection molding machines and part of engineering machinery. Therefore, it is necessary to develop an inner curve hydraulic motor that can satisfy the above requirements as much as possible.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the inner curve hydraulic motor with the bidirectional oil distribution, which realizes the bidirectional oil distribution in the middle of the motor, so that the motor has a more compact structure, higher flow distribution efficiency and more reliable performance.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a bidirectional oil distribution inner curve hydraulic motor comprises two rotors fixed with each other, a casing sleeved on each rotor and an oil distribution seal cover connected between the two casings, wherein each casing comprises an output seal cover and a stator body, the output seal cover is fixed on the stator body, a curve guide rail is arranged in the stator body, an even number of cylinder holes are uniformly arranged on the rotors along the circumferential direction, radially distributed plungers are arranged in each cylinder hole, the top ends of the plungers are connected with rollers, the outer peripheral surfaces of the rollers are in contact with the inner curved surface of the curve guide rail, an oil distribution mechanism for distributing oil to the cylinder holes is arranged between each rotor and the oil distribution seal cover, and the two oil distribution mechanisms are respectively positioned on two sides of the oil distribution seal cover.
The oil distribution seal cover is characterized in that the upper end face and the lower end face of the oil distribution seal cover are respectively provided with a first oil port and a second oil port, a high-pressure flow passage and a low-pressure flow passage are arranged in the oil distribution seal cover, the two first oil ports are respectively communicated with the high-pressure flow passage, the two second oil ports are respectively communicated with the low-pressure flow passage, an even number of flow passage holes which are communicated from left to right are uniformly distributed in the circumferential direction of the oil distribution seal cover, half of the flow passage holes are communicated with the high-pressure flow passage, half of the flow passage holes are communicated with the low-pressure flow passage, the flow passage holes communicated with the high-pressure flow passage and the flow passage holes communicated with the low-pressure flow passage are distributed at intervals, and the oil distribution mechanism is used for guiding hydraulic oil flowing out of the flow passage holes into the cylinder holes. In the structure, a main oil pipe of the system is connected with a first oil port and a second oil port on an end face platform of an oil distribution seal cover, the first oil port is connected with high-pressure oil, the high-pressure oil enters a high-pressure flow passage communicated with the high-pressure flow passage through the first oil port, the flow passage holes are uniformly distributed and distributed at intervals on the oil distribution seal cover and communicated with the high-pressure flow passage, the flow passage holes axially penetrate through the oil distribution seal cover, the high-pressure oil flows to two oil distribution discs fixed on two end faces of the oil distribution seal cover through a flow passage opening, hydraulic oil flowing out of the flow passage holes is guided into a cylinder hole through an oil distribution mechanism, when two rotors rotate to the flow distribution holes and are communicated with a low-pressure flow passage of the oil distribution seal cover, a plunger and a corresponding matched roller move towards the inside of the cylinder hole along a curved guide rail, and the oil is discharged out of a motor through the second oil port through the low-pressure flow passage in the oil distribution seal cover.
The rotor is composed of a main body part and an outward convex flow distribution part, each oil distribution mechanism comprises an oil distribution disc with a shaft hole at the center, the oil distribution disc is coaxially fixed on the oil distribution sealing cover, the oil distribution disc is sleeved on the main body part of the rotor, the oil distribution disc is provided with an oil through surface contacted with the oil distribution sealing cover and an oil distribution surface contacted with the flow distribution part of the rotor, even number of flow distribution holes and installation holes are uniformly distributed on the oil through surface in the circumferential direction, the installation holes are positioned between two adjacent flow distribution holes, a balance hole cover is installed in each installation hole, a damping hole is also arranged at the bottom of each installation hole, even number of kidney-shaped holes are uniformly distributed on the oil distribution surface in the circumferential direction, the flow distribution holes are communicated with the kidney-shaped holes in a one-to-one correspondence manner, so that an oil distribution channel is formed between each flow distribution hole and the kidney-shaped holes, the oil distribution disc realizes accurate oil distribution to the plunger through the oil distribution channel. In the structure, when the oil distribution channel is communicated with the high-pressure oil duct of the oil distribution sealing cover, high-pressure oil enters the cylinder hole of the rotor through the oil distribution channel to push the plunger in the cylinder hole of the rotor to move outwards; when the oil distribution channel is communicated with a low-pressure oil duct of the motor oil distribution sealing cover, low-pressure oil in the rotor cylinder hole enters the low-pressure oil duct of the oil distribution sealing cover through the oil distribution channel, the plunger moves inwards in the rotor cylinder hole, and the oil distribution disc realizes accurate oil distribution of the inner curve motor.
And a pre-pressing spring corresponding to each flow distribution hole and a spring seat used for limiting the pre-pressing spring in the end surface of the oil distribution sealing cover are arranged between the oil distribution disc and the oil distribution sealing cover. In the structure, the inner diameter and the outer diameter of the balance hole cover and the spring force of the pre-pressing spring are reasonably selected, so that good sealing performance between the oil distribution disc and the oil distribution sealing cover can be ensured, and the internal leakage of the inner curve hydraulic motor is effectively reduced.
The oil distribution structure is characterized in that counter bores used for enlarging the oil distribution area are respectively formed in two sides of the waist-shaped hole, the counter bores are of a crescent structure or a semicircular structure, and semicircular unloading grooves which are symmetrically distributed are further formed in the joint of the waist-shaped hole and the oil distribution hole. In this structure, the counter bore that is crescent structure or semi-circular structure has increaseed the logical oil area in waist type hole, has reduced loss of pressure, has improved work efficiency, and waist type hole is compared in the circular port of equal area littleer on radial dimension for motor structure is compacter, and semi-circular off-load groove can begin to lead to oil in advance, postpones the oil blanket, thereby eliminates the oil trapping phenomenon, guarantees hydraulic motor's even running.
The oil distribution disc is provided with an annular protruding part which is matched with the flow distribution part of the rotor, the oil distribution surface is the end surface of the annular protruding part, the waist-shaped hole is formed in the annular protruding part, two positioning holes are symmetrically formed in the oil distribution disc, the two positioning holes are respectively located on two sides of the annular protruding part, in addition, the two positioning holes are internally provided with a plug screw, and one end of the plug screw is connected to the oil distribution sealing cover. In the structure, the rotor is provided with a recess, the annular protruding part is arranged for matching the recess, the annular protruding part and the disc body are coaxially arranged, the inner edges of the annular protruding part and the disc body are overlapped, the overall strength is enhanced, and the waist-shaped hole is not influenced at the position.
One end of the rotor is matched with the inner peripheral wall of the output sealing cover through a bearing. In the structure, the rotor and the output sealing cover are connected through a bearing, so that the rotor can smoothly rotate on one hand, and the connection structure is simple and reliable on the other hand.
The rotor has a central through hole axially penetrating through the rotor. In this structure, every rotor adopts the cavity design, and this hydraulic motor passes through the central through-hole output torque of rotor, can conveniently extend this hydraulic motor's function and application.
One of them the periphery of the stator body of casing be fixed with the installation flange board, be close to the rotor of installation flange board be the output rotor, output rotor and corresponding output closing cap between realize sealedly through oil seal spare, just the central through-hole of output rotor in be provided with the spline. In this structure, the setting of installation flange board is convenient for install whole, and the setting of spline does benefit to and reliably is connected with external part.
The other shell also comprises a rear end cover, and the rear end cover is fixed on the corresponding output sealing cover through a connecting screw. Its benefit lies in making reliably be connected between the rear end cap and the corresponding output end cover, the later stage dismouting of being convenient for simultaneously is maintained.
Compared with the prior art, the utility model has the advantages that:
1. the motor flow distribution scheme adopts axial double-end-face flow distribution, the flow distribution precision and the volume efficiency are higher, the good sealing performance of the flow distribution disc, the rotor and the flow distribution sealing cover is ensured by reasonably selecting the inner and outer diameters of the oil distribution disc balance hole cover and the pre-pressing spring force, and the internal leakage of the motor is reduced;
2. the axial double-end-face oil distribution enables the acting part of the motor to be expanded to two ends of the oil distribution sealing cover simultaneously, the radial size is not increased, the displacement of the motor is expanded in multiples, and the application occasions of the motor are expanded;
3. the axial supporting structure of the double-end-face valve plate is adopted, high-pressure oil led out from the valve hole acts on the balance hole cover to balance the axial force generated in the axial flow distribution process, the axial size of the motor is greatly reduced, the whole machine is driven by a hydraulic motor or a speed reducer in other forms with the same power, and the size of the whole machine can be reduced by more than 30% in weight;
4. the motor working cylinder body and the output shaft are integrated, so that raw materials are saved, and the assembly and working reliability are improved;
5. the output shaft of the motor adopts a hollow through hole design, and the auxiliary function and the application field of the motor can be conveniently expanded.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic perspective view of an oil distribution pan according to the present invention;
FIG. 3 is a schematic perspective view of the oil distribution pan of the present invention;
FIG. 4 is a schematic plan view of an oil distribution pan according to the present invention;
fig. 5 is a cross-sectional view a-a of fig. 4 in accordance with the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited thereto.
The first embodiment is as follows: as shown in the figure, the two-way oil distribution inner curve hydraulic motor comprises two mutually fixed rotors 1, a casing 14 sleeved on each rotor 1 and an oil distribution seal cover 15 connected between the two casings 14, each casing 14 comprises an output seal cover 21 and a stator body 22, the output seal cover 21 is fixed on the stator body 22, a curve guide rail 23 is arranged in the stator body 22, an even number of cylinder holes 24 are uniformly arranged on the rotors 1 along the circumferential direction, radially distributed plungers 25 are arranged in each cylinder hole 24, the top ends of the plungers 25 are connected with rollers 26, the outer peripheral surfaces of the rollers 26 are in contact with the inner curved surface of the curve guide rail 23, an oil distribution mechanism for distributing oil to the cylinder holes 24 is arranged between each rotor 1 and the oil distribution seal cover 15, and the two oil distribution mechanisms are respectively positioned on two sides of the oil distribution seal cover 15.
Example two: as shown in the figures, the other structure is the same as the first embodiment, and the difference is that the upper end face and the lower end face of the oil distribution sealing cover 15 are respectively provided with a first oil port 16 and a second oil port 17, a high-pressure flow passage 18 and a low-pressure flow passage 19 are arranged in the oil distribution sealing cover 15, the two first oil ports 16 are respectively communicated with the high-pressure flow passage 18, the two second oil ports 17 are respectively communicated with the low-pressure flow passage 19, an even number of flow passage holes 20 which are communicated from left to right are uniformly arranged on the oil distribution sealing cover 15 in the circumferential direction, a half number of the flow passage holes 20 are communicated with the high-pressure flow passage 18, a half number of the flow passage holes 20 are communicated with the low-pressure flow passage 19, the flow passage holes 20 communicated with the high-pressure flow passage 18 and the flow passage holes 20 communicated with the low-pressure flow passage 19 are distributed at intervals, and the oil distribution mechanism is used for guiding hydraulic oil flowing out of the flow passage holes 20 into the cylinder holes 24. In the structure, a main oil pipe of the system is connected with a first oil port 16 and a second oil port 17 on an end face platform of an oil distribution seal cover 15, the first oil port 16 is connected with high-pressure oil, the high-pressure oil enters a high-pressure flow passage 18 communicated with the high-pressure oil through the first oil port 16, even-number flow passage holes 20 which are uniformly distributed at intervals and communicated with the high-pressure flow passage 18 on the oil distribution sealing cover 15 are arranged, the flow passage holes 20 axially penetrate through the oil distribution sealing cover 15, high-pressure oil flows to two oil distribution discs 27 fixed on two end faces of the oil distribution sealing cover 15 through the flow passage holes 20, hydraulic oil flowing out of the flow passage holes 20 is guided into a cylinder hole 24 through an oil distribution mechanism, and when the two rotors 1 are rotated to the state that the distribution holes 30 communicate with the low pressure flow passage 19 of the oil distribution cover 15, the plunger 25 and the corresponding cooperating roller 26 move along the curved guide rail 23 towards the inside of the cylinder bore 24 and the oil exits the motor through the second oil port 17 via the low pressure flow passage 19 in the oil distributing cover 15.
The rotor 1 is composed of a main body part 11 and a convex flow distribution part 12, each oil distribution mechanism comprises an oil distribution disc 27 with a shaft hole at the center, the oil distribution disc 27 is coaxially fixed on an oil distribution cover 15, and the oil distribution disc 27 is sleeved on the main body part 11 of the rotor 1, and the oil distribution disc 27 is provided with an oil through surface 28 contacted with the oil distribution cover 15 and an oil distribution surface 29 contacted with the oil distribution part 12 of the rotor 1, an even number of distribution holes 30 and mounting holes 31 are uniformly distributed on the oil through surface 28 in the circumferential direction, the mounting holes 31 are positioned between two adjacent distribution holes 30, a balance hole cover 32 is arranged in the mounting hole 31, a damping hole 33 is also arranged at the bottom of the mounting hole 31, even-numbered kidney-shaped holes 34 are evenly distributed on the oil distribution surface 29 in the circumferential direction, the distribution holes 30 are communicated with the kidney-shaped holes 34 in a one-to-one correspondence manner, so that an oil distribution passage 35 is formed between the oil distribution hole 30 and the kidney-shaped hole 34, and the oil distribution disc 27 realizes accurate oil distribution to the plunger 25 through the oil distribution passage 35. In the structure, when the oil distribution channel 35 is communicated with the high-pressure oil channel of the oil distribution seal cover 15, high-pressure oil enters the cylinder hole 24 of the rotor 1 through the oil distribution channel 35 to push the plunger 25 in the cylinder hole 24 of the rotor 1 to move outwards; when the oil distribution channel 35 is communicated with the low-pressure oil passage of the motor oil distribution sealing cover 15, the low-pressure oil in the rotor 1 cylinder hole 24 enters the low-pressure oil passage of the oil distribution sealing cover 15 through the oil distribution channel 35, the plunger 25 moves inwards in the rotor 1 cylinder hole 24, and thus the oil distribution disc 27 realizes accurate oil distribution of the inner curve motor, but when the device works, a large axial force can be generated between the oil distribution surface 29 and the end surface of the rotor 1, so that the two end surfaces are separated from each other, the gap is enlarged, and the leakage of the inner curve motor is increased.
A pre-pressure spring 41 corresponding to each of the flow-distributing holes 30 and a spring seat 42 for restraining the pre-pressure spring 41 in an end face of the oil distribution cover 15 are provided between the oil distribution pan 27 and the oil distribution cover 15. In the structure, the inner diameter and the outer diameter of the balance hole cover 32 and the spring force of the pre-pressing spring 41 are reasonably selected, so that good sealing performance between the balance hole cover and the oil distribution disc 27 and between the balance hole cover and the oil distribution sealing cover 15 can be ensured, and internal leakage of the inner curve hydraulic motor is effectively reduced.
The oil distribution disc 27 is provided with an annular protruding part 38 matched with the flow distribution part 12 of the rotor 1, the oil distribution surface 29 is the end surface of the annular protruding part 38, the kidney-shaped hole 34 is formed in the annular protruding part 38, two positioning holes 39 are symmetrically formed in the oil distribution disc 27, the two positioning holes 39 are respectively located on two sides of the annular protruding part 38, the two positioning holes 39 are internally provided with the plug screws 40, and one ends of the plug screws 40 are connected to the oil distribution cover 15. In this configuration, the rotor 1 has a recess, and the annular protrusion 38 is disposed to fit the recess, and the annular protrusion 38 is disposed coaxially with the disk body, and the inner edges thereof coincide with each other, so that the strength of the whole is enhanced, and the kidney-shaped hole 34 is not affected at this position.
Example three: as shown in the drawing, the other structure is the same as the embodiment except that one end of the rotor 1 is fitted to the inner peripheral wall of the output cover 21 through a bearing 43. In the structure, the rotor 1 is connected with the output sealing cover 21 through the bearing 43, so that the rotor 1 can smoothly rotate on one hand, and the connection structure is simple and reliable on the other hand.
The rotor 1 has a central through hole 13 axially penetrating through it. In this structure, every rotor 1 adopts the cavity design, and this hydraulic motor passes through the central through-hole 13 output torque of rotor 1, can conveniently expand this hydraulic motor's function and application.
An installation flange plate is fixed on the periphery of the stator body 22 of one of the casings 14, the rotor 1 close to the installation flange plate is an output rotor, the output rotor and the corresponding output sealing cover 21 are sealed through an oil seal piece 45, and a spline 46 is arranged in a central through hole 13 of the output rotor. In this structure, the installation of the whole body is facilitated by the installation of the installation flange plate, and the spline 46 is favorable for being reliably connected with an external component.
The other housing 14 further comprises a rear cover 47, the rear cover 47 being fixed to the corresponding output cover 21 by means of a connecting screw 48. Its benefit lies in making reliably be connected between rear end housing 47 and the corresponding output end housing, the later stage dismouting of being convenient for simultaneously is maintained.
This hydraulic motor adopts two-way oil, the interior curve structure form of radial plunger 25 of joining in marriage of axial terminal surface, and the motor passes through the screw and fixes mounting flange board and host computer structural connection together, and the one end of one of them rotor 1 has the output of spline 46 to be connected with the output shaft cooperation of host computer, utilizes the rotary motion output torque of two rotors 1 of motor hollow structure to obtain bigger moment of torsion. The system main oil pipe is connected to a first oil port 16 and a second oil port 17 on a platform on the end face of the oil distribution sealing cover 15, the first oil port 16 is connected with high-pressure oil, the high-pressure oil enters a high-pressure flow passage 18 communicated with the high-pressure flow passage through the first oil port 16, the flow passage holes 20 are uniformly distributed and distributed at intervals on the oil distribution sealing cover 15 and communicated with the high-pressure flow passage 18, the flow passage holes 20 axially penetrate through the oil distribution sealing cover 15, and the high-pressure oil flows to two oil distribution discs 27 fixed on two end faces of the oil distribution sealing cover 15 through the flow passage holes 20.
Then the high-pressure oil flows out through kidney-shaped holes 34 symmetrically arranged on oil distribution discs 27 at two ends and enters a cylinder hole 24 of a flow distribution part 12 of the rotor 1 from a flow distribution hole 30 of an oil distribution surface 29 of the rotor 1, the high-pressure oil pushes a plunger 25 in the cylinder hole 24 and a roller 26 which is arranged in a matching mode to move outwards along a curved guide rail 23, force is transmitted to an inner curved surface of the curved guide rail 23 through the roller 26, tangential force generated by the high-pressure oil pushes the roller 26 to move along the curved surface of the curved guide rail 23 to generate torque, and the roller 26 transmits reaction force to the plunger 25 in the cylinder hole 24 to generate rotation. When the two rotors 1 rotate to the distributing hole 30 to communicate with the low pressure flow passage 19 of the oil distributing cover 15, the plunger 25 and the corresponding roller 26 move along the curved guide rail 23 toward the inside of the cylinder hole 24, and the oil is discharged out of the motor through the second oil port 17 through the low pressure flow passage 19 in the oil distributing cover 15. Along with the rotation of the rotor 1, the high-pressure chamber and the low-pressure chamber are alternately changed, the volume of the rotor 1 cylinder hole 24 positioned on the high-pressure side is gradually increased, the volume of the rotor 1 cylinder hole 24 positioned on the low-pressure side is gradually reduced, and the reciprocating motion realizes the oil inlet and the oil discharge of the motor. The quantity of the curved surfaces of the curved guide rail 23 is large, the even number of plungers 25 which rotate a circle of the motor can feed and discharge oil for several times, each section of curved surface of the curved guide rail 23 is divided into two halves, one half is an oil inlet section, the motor outputs torque outwards at the moment, the other half is an oil return section, and internal oil discharge of the motor is discharged into a system oil tank through an oil discharge port.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereby, and the present invention may be modified in materials and structures, or replaced with technical equivalents, in the constructions of the above-mentioned various components. Therefore, structural equivalents made by using the description and drawings of the present invention or by directly or indirectly applying to other related arts are also encompassed within the scope of the present invention.
Claims (10)
1. The utility model provides a two-way inner curve hydraulic motor who joins in marriage oil which characterized in that: the oil distribution device comprises two rotors fixed with each other, a casing sleeved on each rotor and an oil distribution sealing cover connected between the two casings, wherein each casing comprises an output sealing cover and a stator body, the output sealing cover is fixed on the stator body, a curve guide rail is arranged in the stator body, an even number of cylinder holes are uniformly distributed on each rotor along the circumferential direction, a plunger distributed in the radial direction is arranged in each cylinder hole, the top end of the plunger is connected with a roller, the peripheral surface of the roller is contacted with the inner curved surface of the curve guide rail, an oil distribution mechanism used for distributing oil to the cylinder holes is arranged between each rotor and the oil distribution sealing cover, and the two oil distribution mechanisms are respectively positioned on two sides of the oil distribution sealing cover.
2. The bi-directional oil distribution inner curve hydraulic motor according to claim 1, characterized in that: the oil distribution seal cover is characterized in that the upper end face and the lower end face of the oil distribution seal cover are respectively provided with a first oil port and a second oil port, a high-pressure flow passage and a low-pressure flow passage are arranged in the oil distribution seal cover, the two first oil ports are respectively communicated with the high-pressure flow passage, the two second oil ports are respectively communicated with the low-pressure flow passage, an even number of flow passage holes which are communicated from left to right are uniformly distributed in the circumferential direction of the oil distribution seal cover, half of the flow passage holes are communicated with the high-pressure flow passage, half of the flow passage holes are communicated with the low-pressure flow passage, the flow passage holes communicated with the high-pressure flow passage and the flow passage holes communicated with the low-pressure flow passage are distributed at intervals, and the oil distribution mechanism is used for guiding hydraulic oil flowing out of the flow passage holes into the cylinder holes.
3. The bi-directional oil distribution inner curve hydraulic motor according to claim 1, characterized in that: the rotor is composed of a main body part and an outward convex flow distribution part, each oil distribution mechanism comprises an oil distribution disc with a shaft hole at the center, the oil distribution disc is coaxially fixed on the oil distribution sealing cover, the oil distribution disc is sleeved on the main body part of the rotor, the oil distribution disc is provided with an oil through surface contacted with the oil distribution sealing cover and an oil distribution surface contacted with the flow distribution part of the rotor, even number of flow distribution holes and installation holes are uniformly distributed on the oil through surface in the circumferential direction, the installation holes are positioned between two adjacent flow distribution holes, a balance hole cover is installed in each installation hole, a damping hole is also arranged at the bottom of each installation hole, even number of kidney-shaped holes are uniformly distributed on the oil distribution surface in the circumferential direction, the flow distribution holes are communicated with the kidney-shaped holes in a one-to-one correspondence manner, so that an oil distribution channel is formed between each flow distribution hole and the kidney-shaped holes, the oil distribution disc realizes accurate oil distribution to the plunger through the oil distribution channel.
4. A bi-directional oil distribution inside curve hydraulic motor as set forth in claim 3, wherein: and a pre-pressing spring corresponding to each flow distribution hole and a spring seat used for limiting the pre-pressing spring in the end surface of the oil distribution sealing cover are arranged between the oil distribution disc and the oil distribution sealing cover.
5. A bi-directional oil distribution inside curve hydraulic motor as set forth in claim 3, wherein: the oil distribution structure is characterized in that counter bores used for enlarging the oil distribution area are respectively formed in two sides of the waist-shaped hole, the counter bores are of a crescent structure or a semicircular structure, and semicircular unloading grooves which are symmetrically distributed are further formed in the joint of the waist-shaped hole and the oil distribution hole.
6. A bi-directional oil distribution inside curve hydraulic motor as set forth in claim 3, wherein: the oil distribution disc is provided with an annular protruding part which is matched with the flow distribution part of the rotor, the oil distribution surface is the end surface of the annular protruding part, the waist-shaped hole is formed in the annular protruding part, two positioning holes are symmetrically formed in the oil distribution disc, the two positioning holes are respectively located on two sides of the annular protruding part, in addition, the two positioning holes are internally provided with a plug screw, and one end of the plug screw is connected to the oil distribution sealing cover.
7. The bi-directional oil distribution inner curve hydraulic motor according to claim 1, characterized in that: one end of the rotor is matched with the inner peripheral wall of the output sealing cover through a bearing.
8. The bi-directional oil distribution inner curve hydraulic motor according to claim 1, characterized in that: the rotor has a central through hole axially penetrating through the rotor.
9. The inside curve hydraulic motor of claim 8, wherein: one of them the periphery of the stator body of casing be fixed with the installation flange board, be close to the rotor of installation flange board be the output rotor, output rotor and corresponding output closing cap between realize sealedly through oil seal spare, just the central through-hole of output rotor in be provided with the spline.
10. The inside curve hydraulic motor of claim 8, wherein: the other shell also comprises a rear end cover, and the rear end cover is fixed on the corresponding output sealing cover through a connecting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121803939.3U CN216342554U (en) | 2021-08-02 | 2021-08-02 | Inner curve hydraulic motor with bidirectional oil distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121803939.3U CN216342554U (en) | 2021-08-02 | 2021-08-02 | Inner curve hydraulic motor with bidirectional oil distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216342554U true CN216342554U (en) | 2022-04-19 |
Family
ID=81168240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121803939.3U Active CN216342554U (en) | 2021-08-02 | 2021-08-02 | Inner curve hydraulic motor with bidirectional oil distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216342554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875186A (en) * | 2023-02-27 | 2023-03-31 | 太原科技大学 | Integrated rotor structure high-torque density inner curve hydraulic motor |
-
2021
- 2021-08-02 CN CN202121803939.3U patent/CN216342554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875186A (en) * | 2023-02-27 | 2023-03-31 | 太原科技大学 | Integrated rotor structure high-torque density inner curve hydraulic motor |
| CN115875186B (en) * | 2023-02-27 | 2023-04-28 | 太原科技大学 | Integrated high-torque-density inner curve hydraulic motor with co-rotor structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101446286B (en) | Modular internal gear pump or motor | |
| CN202833001U (en) | Swash plate type rotary valve flow distributing pure water plunger pump | |
| CN109441749B (en) | Shaft valve composite flow distribution method of water hydraulic plunger pump | |
| JP2002202072A (en) | Rotary fluid pressure vane pump for improving port structure of under vane | |
| CN216342554U (en) | Inner curve hydraulic motor with bidirectional oil distribution | |
| CN112648183A (en) | Side plate for master-slave vane pump and double-acting master-slave vane pump | |
| CN201615056U (en) | Rotor pump with high self-priming performance | |
| CN111997865A (en) | Miniature water hydraulic motor pump driven by roller carrier | |
| CN111396279B (en) | Force balance type two-dimensional plunger pump | |
| US3547565A (en) | Rotary device | |
| CN201902286U (en) | Inner curve multiple-acting radial plunger type hydraulic centrifugal motor | |
| CN2545386Y (en) | Axial oil distribution cycloidal hydraulic motor | |
| CN204327396U (en) | Compact axial flow distribution cycloid hydraulic motor with short shell | |
| CN113623129A (en) | Inner curve hydraulic motor with bidirectional oil distribution | |
| CN112610438A (en) | Piston pump | |
| CN109653973B (en) | Water lubrication shaft valve composite flow distribution radial plunger pump | |
| CN212479452U (en) | Inner curve hydraulic motor | |
| CN111502952A (en) | Heavy-load force balance type two-dimensional piston monoblock pump | |
| CN110552855A (en) | multilayer radial large-flow high-pressure multi-plunger oil pump device | |
| CN109404276B (en) | Double-acting vane pump | |
| CN210509493U (en) | Multilayer radial large-flow high-pressure multi-plunger oil pump device | |
| CN114934886A (en) | Ultrahigh-pressure high-speed swash plate type axial plunger variable displacement pump | |
| CN110500270B (en) | Bidirectional high-speed miniature plunger pump with inserted oil port | |
| CN114483512A (en) | Miniature water hydraulic pump | |
| CN209838611U (en) | Force balance two-dimensional plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |