CN219012759U - Symmetrical balance oil distribution disc for motor - Google Patents
Symmetrical balance oil distribution disc for motor Download PDFInfo
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- CN219012759U CN219012759U CN202123160405.6U CN202123160405U CN219012759U CN 219012759 U CN219012759 U CN 219012759U CN 202123160405 U CN202123160405 U CN 202123160405U CN 219012759 U CN219012759 U CN 219012759U
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Abstract
The utility model relates to a cycloid symmetrical balance oil distribution disc of a hydraulic motor, and belongs to the field of hydraulic motors. The technical scheme includes that the motor symmetrical balance oil distribution disc comprises an oil distribution disc body, wherein high-pressure oil distribution grooves and low-pressure oil distribution grooves are formed in two end faces of the oil distribution disc body, the number of the high-pressure oil distribution grooves and the number of the low-pressure oil distribution grooves are equal and even, the high-pressure oil distribution grooves and the low-pressure oil distribution grooves are arranged at intervals and are equal in angle at intervals, and the arrangement positions of the low-pressure oil distribution grooves on one face correspond to the arrangement positions of the high-pressure oil distribution grooves on the other face one by one. The utility model has the beneficial effects that the high-pressure oil distributing groove is opposite to the high-pressure oil distributing groove, the low-pressure oil distributing groove is opposite to the low-pressure oil distributing groove, uniform balanced compression is realized, radial friction and grinding injury caused by unbalanced compression are avoided, the balance in the oil distributing process is good, the abrasion of a mechanical structure is reduced, the transmission efficiency of the hydraulic motor is greatly improved, and the service life of the hydraulic motor is greatly prolonged.
Description
Technical Field
The utility model relates to the field of hydraulic motors, in particular to a symmetrical balance oil distribution disc of a motor.
Background
The cycloid hydraulic motor is widely applied to the fields of engineering machinery, agricultural machinery, fishery machinery and the like due to the characteristics of simple structure, small volume, large torque, wide rotating speed range, stable operation at low rotating speed and the like. The inner gear ring of the cycloid hydraulic motor is fixedly connected with the shell, the outer gear ring is fixedly connected with the rotor, a plurality of oil cavities with unequal volumes are formed by contact between the inner gear ring and the outer gear ring, the volume of a high-pressure oil cavity filled with oil is increased through hydraulic pressure after hydraulic oil is filled into the oil cavities, and the volume of a low-pressure oil cavity filled with oil is reduced, so that the rotor is pushed to rotate, and an output shaft is driven to output torque.
The oil cavity of the cycloid hydraulic motor is distributed with oil through an oil distribution disc, hydraulic oil enters from an oil inlet of the hydraulic motor, enters into the oil cavity through a high-pressure oil distribution hole of the oil distribution disc, and hydraulic oil after acting is discharged from an oil outlet of the hydraulic motor through a low-pressure oil distribution hole of the oil distribution disc. In the process, the high oil pressure position and the low oil pressure position are unbalanced in the circumferential direction of the oil distribution disc, so that the oil distribution disc is subjected to unbalanced radial force in the working process, and friction and damage are caused between the oil distribution disc and the inside of the shell.
Disclosure of Invention
The utility model provides a symmetrical balanced oil distribution disc of a motor, aiming at the problem of unbalanced radial stress of the existing oil distribution disc.
In order to solve the problems, the technical scheme includes that the motor symmetrical balance oil distribution disc comprises an oil distribution disc main body, a certain number of high-pressure oil distribution grooves and a certain number of low-pressure oil distribution grooves are formed in a first end face and a second end face of the oil distribution disc main body, the number of the high-pressure oil distribution grooves and the number of the low-pressure oil distribution grooves are equal and are even on each end face, the high-pressure oil distribution grooves and the low-pressure oil distribution grooves are uniformly arranged along the circumferential direction, the high-pressure oil distribution grooves are symmetrically arranged in pairs in the center of the oil distribution disc main body, the low-pressure oil distribution grooves are symmetrically arranged in pairs in the center of the oil distribution disc main body, and the interval angles between the adjacent high-pressure oil distribution grooves and the adjacent low-pressure oil distribution grooves are equal; the high pressure oil distribution groove on the first end face corresponds to the low pressure oil distribution groove on the second end face, and the high pressure oil distribution groove on the second end face corresponds to the low pressure oil distribution groove on the first end face. The high-pressure oil distribution groove and the low-pressure oil distribution groove are arranged in a central symmetry manner by the center of the oil distribution disc main body, the high-pressure oil distribution groove is opposite to the high-pressure oil distribution groove, the low-pressure oil distribution groove is opposite to the low-pressure oil distribution groove, the pressure balance of the oil distribution disc main body in any radial direction is realized when the oil distribution operation is carried out, uniform balanced compression is realized, radial friction and grinding injury caused by unbalanced compression are avoided, the balance of the oil distribution process is good, the abrasion of a mechanical structure is reduced, the transmission efficiency of a hydraulic motor is greatly improved, and the service life of the hydraulic motor is greatly prolonged; meanwhile, the front and back directions do not need to be distinguished when the oil distribution disc is installed, the installation process is simplified, the assembly efficiency is improved, the front and back sides can be replaced, and the service life of the oil distribution disc is prolonged.
Preferably, the high-pressure oil distribution groove is opened to an outer circumferential surface of the oil distribution disc main body, and the low-pressure oil distribution groove is opened to an inner circumferential surface of the oil distribution disc main body. The side face of the oil distribution groove is opened, hydraulic oil enters the rotating gap to achieve a lubricating effect, and friction is further reduced.
Preferably, six high-pressure oil distribution grooves and six low-pressure oil distribution grooves are provided on each end face.
Preferably, circumferential centering teeth are provided on the inner circumferential surface of the oil distribution plate body. The circumferential centering teeth are matched with the rotating shaft to replace the traditional spline fit, so that the processing difficulty of the oil distribution disc and the shaft is greatly reduced.
Preferably, a certain number of radial centering teeth are uniformly arranged on the inner circular surface of the oil distribution disc body along the circumferential direction, the radial centering teeth are bosses which are inwards arranged along the radial direction of the oil distribution disc body, and the length of the radial centering teeth along the radial direction of the oil distribution disc body is smaller than the length of the circumferential centering teeth along the radial direction of the oil distribution disc body. The radial centering teeth are in contact fit with the outer circular surface of the rotating shaft, so that radial runout of the oil distribution disc is avoided, the rotating precision is higher, and meanwhile, only the inner circular surface of the radial centering teeth is required to be finely machined, and the machining difficulty is reduced.
Preferably, three radial centering teeth are provided, 120 degrees apart from each other.
Preferably, one of the radial centering teeth is directly opposite to the circumferential centering teeth in the radial direction of the oil distribution disc main body. During installation, the radial centering teeth are opposite to the circumferential centering teeth in the radial direction, radial stress is completely applied along the protruding directions of the radial centering teeth and the circumferential centering teeth, radial positioning capability is improved, and excessive pressure caused by edges of the centering teeth to an installed rotating shaft is avoided.
Preferably, the cross section of the high-pressure oil distributing groove is trapezoid, the trapezoid short side of the high-pressure oil distributing groove is close to the inner circle of the oil distributing disc main body, the trapezoid long side of the high-pressure oil distributing groove is close to the outer circle of the oil distributing disc main body, the groove bottom of the high-pressure oil distributing groove is an inclined plane, and the distance between the trapezoid short side and the end face of the oil distributing groove main body where the high-pressure oil distributing groove is located is smaller than the distance between the long side and the end face of the oil distributing groove main body;
the cross section of the low-pressure oil distributing groove is trapezoid, the trapezoid long side of the low-pressure oil distributing groove is close to the inner circle of the oil distributing disc main body, the trapezoid short side of the low-pressure oil distributing groove is close to the outer circle of the oil distributing disc main body, the groove bottom of the low-pressure oil distributing groove is an inclined surface, and the distance between the trapezoid short side and the end face of the oil distributing groove main body where the low-pressure oil distributing groove is located is smaller than that between the long side and the end face of the oil distributing groove main body. The hydraulic oil is convenient to flow.
According to the technical scheme, the utility model has the advantages that: the high-pressure oil distribution groove and the low-pressure oil distribution groove which are respectively symmetrical are designed, and the high-pressure cavity and the low-pressure cavity are symmetrically arranged, so that radial force to the oil distribution disc cannot be generated due to high pressure, uniform balanced compression is realized, and radial friction and grinding injury are avoided; the front and back sides of the oil distribution disc are provided with the high-pressure oil distribution groove and the low-pressure oil distribution groove which are in the same distribution form, so that the installation direction does not need to be distinguished, the front and back replacement can be realized, and the service life of the oil distribution disc is prolonged; the radial centering teeth and the circumferential centering teeth are adopted to replace the traditional spline connection, so that the manufacturing is more convenient, the rotation precision is high, and the oil distribution effect is good.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Fig. 2 is a schematic front view of an embodiment of the present utility model.
Fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.
In the figure: 1. high-pressure oil distribution groove 2, low-pressure oil distribution groove 3, radial centering tooth 4, circumferential centering tooth 5-1, first end face 5-2, second end face.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.
As shown in fig. 1-3, a motor symmetrical balance oil distribution disc comprises an oil distribution disc body, wherein two end faces of the oil distribution disc body are respectively provided with a first end face 5-1 and a second end face 5-2, six high-pressure oil distribution grooves 1 and six low-pressure oil distribution grooves 2 are arranged on the first end face 5-1, the high-pressure oil distribution grooves 1 are uniformly arranged along the circumferential direction of the oil distribution disc body, the low-pressure oil distribution grooves 2 are uniformly arranged along the circumferential direction of the oil distribution disc body, the high-pressure oil distribution grooves 1 and the low-pressure oil distribution grooves 2 are arranged at intervals, and the interval angles between any adjacent high-pressure oil distribution grooves 1 and low-pressure oil distribution grooves 2 are equal and are 30 degrees; six high-pressure oil distributing grooves 1 and six low-pressure oil distributing grooves 2 are arranged on the second end face 5-2, the high-pressure oil distributing grooves 1 and the low-pressure oil distributing grooves 2 on the two end faces are in one-to-one correspondence in a back-to-back mode, namely, as shown in fig. 3, the back face of the high-pressure oil distributing groove 1 is arranged on the first end face 5-1, namely, the low-pressure oil distributing groove is arranged at the corresponding position on the second end face 5-2, and the high-pressure oil distributing groove 1 is arranged on the back face of the low-pressure oil distributing groove 2 on the first end face 5-1.
The high-pressure oil distributing grooves 1 on the two end surfaces have the same structure, and the low-pressure oil distributing grooves 2 on the two end surfaces have the same structure:
the high-pressure oil distribution groove 1 is opened to the end face where the high-pressure oil distribution groove is positioned and the outer circular face of the oil distribution disc main body, the low-pressure oil distribution groove 2 is opened to the end face where the low-pressure oil distribution groove is positioned and the inner circular face of the oil distribution disc main body, as shown in fig. 2, the cross section of the high-pressure oil distribution groove is trapezoid, the trapezoid short side of the high-pressure oil distribution groove is close to the inner circular face of the oil distribution disc main body, the trapezoid long side of the high-pressure oil distribution groove is close to the outer circular face of the oil distribution disc main body, the cross section of the low-pressure oil distribution groove is trapezoid, the trapezoid long side of the low-pressure oil distribution groove is close to the inner circular face of the oil distribution disc main body; as shown in fig. 3, the groove bottom of the high-pressure oil distribution groove is an inclined surface, the distance between the short side of the trapezoid and the end surface of the oil distribution groove main body where the high-pressure oil distribution groove is located is smaller than the distance between the long side and the end surface of the oil distribution groove main body, the groove bottom of the low-pressure oil distribution groove is an inclined surface, the distance between the short side of the trapezoid and the end surface of the oil distribution groove main body where the low-pressure oil distribution groove is located is smaller than the distance between the long side and the end surface of the oil distribution groove main body, namely, taking the high-pressure oil distribution groove and the low-pressure oil distribution groove on the first end surface 5-1 as an example, the side, close to the center of the oil distribution groove main body, of the groove bottom of the high-pressure oil distribution groove 1 is close to the first end surface 5-1 in the axial direction, the side, close to the second end surface 5-2 in the axial direction, and the side, close to the center of the groove bottom of the low-pressure oil distribution groove 2, close to the center of the oil distribution groove main body is close to the second end surface 5-2 in the axial direction.
The inner circular surface of the oil distribution disc main body is provided with circumferential centering teeth 4, the circumferential centering teeth 4 are bosses inwards along the radial direction of the oil distribution disc main body, three radial centering teeth 3 are uniformly arranged on the inner circular surface of the oil distribution disc main body along the circumferential direction, the mutual angular interval is 120 degrees, the radial centering teeth 3 are bosses inwards along the radial direction of the oil distribution disc main body, the inner side surface of the bosses can be provided with concave arcs matched with the outer circle of a rotating shaft, the length of the radial centering teeth along the radial direction of the oil distribution disc main body is smaller than the length of the circumferential centering teeth 4 along the radial direction of the oil distribution disc main body, namely d1< d2 in figure 2, one of the radial centering teeth 3 is opposite to the circumferential centering teeth 4 along the radial direction of the oil distribution disc main body, the mode of connection of circumference centering tooth 4 and pivot is similar with the parallel key, replace traditional spline connection mode of joining in marriage the food tray, greatly reduced the processing degree of difficulty to joining in marriage food tray interior circle and pivot excircle, further set up radial centering tooth 3 simultaneously, the interior terminal surface and the pivot excircle contact cooperation of radial centering tooth 3 during the installation, take place radial runout between avoiding joining in marriage food tray and the pivot during the rotation, simultaneously, radial centering tooth 3 and circumference centering tooth cooperation relative with circumference centering tooth 4, make the radial force perpendicular to this radial centering tooth 3's contact surface in this direction, the edge that probably produces radial centering tooth 3 under the other angles is to the pivot excircle surface excessive pressure lead to fish tail axle part or block the difficult problem of dismantling.
When the oil distribution disc distributes oil, the high-pressure oil distribution groove and the low-pressure oil distribution groove in the circumferential direction are arranged completely in a central symmetry mode respectively, radial forces received by the opposite high-pressure oil distribution grooves are equal, uniform balanced compression is achieved, radial friction and damage caused by unbalanced compression are avoided, meanwhile, the side face of the oil distribution groove is opened, and a lubricating effect is achieved by entering a rotating gap through hydraulic oil.
According to the technical scheme, the high-pressure oil distribution groove and the low-pressure oil distribution groove which are symmetrical are designed, the high-pressure cavity and the low-pressure cavity are symmetrical, radial force to the oil distribution disc is not generated due to high pressure, uniform balanced compression is realized, and radial friction and grinding injury are avoided; the front and back sides of the oil distribution disc are provided with the high-pressure oil distribution groove and the low-pressure oil distribution groove which are in the same distribution form, so that the installation direction does not need to be distinguished, the front and back replacement can be realized, and the service life of the oil distribution disc is prolonged; the radial centering teeth and the circumferential centering teeth are adopted to replace the traditional spline connection, so that the manufacturing is more convenient, the rotation precision is high, and the oil distribution effect is good.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The motor symmetrical balance oil distribution disc is characterized by comprising an oil distribution disc main body, wherein a certain number of high-pressure oil distribution grooves and a certain number of low-pressure oil distribution grooves are formed in a first end face and a second end face of the oil distribution disc main body, the number of the high-pressure oil distribution grooves and the number of the low-pressure oil distribution grooves are equal and even on each end face, the high-pressure oil distribution grooves and the low-pressure oil distribution grooves are uniformly arranged along the circumferential direction, the high-pressure oil distribution grooves are symmetrically arranged in pairs in the center of the oil distribution disc main body, the low-pressure oil distribution grooves are symmetrically arranged in pairs in the center of the oil distribution disc main body, and the interval angles between the adjacent high-pressure oil distribution grooves and the interval angles between the adjacent low-pressure oil distribution grooves are equal; the high pressure oil distribution groove on the first end face corresponds to the low pressure oil distribution groove on the second end face, and the high pressure oil distribution groove on the second end face corresponds to the low pressure oil distribution groove on the first end face.
2. The motor symmetry balancing oil distribution disc according to claim 1, wherein the high pressure oil distribution groove is opened to an outer circumferential surface of the oil distribution disc main body, and the low pressure oil distribution groove is opened to an inner circumferential surface of the oil distribution disc main body.
3. The motor symmetrical balance oil distribution pan according to claim 1 or 2, wherein six high-pressure oil distribution grooves and six low-pressure oil distribution grooves are provided on the first end face, respectively; six high-pressure oil distribution grooves and six low-pressure oil distribution grooves are respectively arranged on the second end face.
4. The motor symmetrical balance oil distribution disc according to claim 1 or 2, characterized in that circumferential centering teeth are provided on an inner circular surface of the oil distribution disc body.
5. The motor symmetry balance oil distribution disc according to claim 4, wherein a certain number of radial centering teeth are uniformly arranged on the inner circular surface of the oil distribution disc body along the circumferential direction, and the length of the radial centering teeth along the radial direction of the oil distribution disc body is smaller than the length of the circumferential centering teeth along the radial direction of the oil distribution disc body.
6. The motor symmetry balancing oil distribution disc according to claim 5, wherein three radial centering teeth are provided, and the angular interval between adjacent radial centering teeth is 120 degrees.
7. The motor symmetry balancing oil distribution disc according to claim 6, wherein one of the radial centering teeth is directly opposite to the circumferential centering teeth along the radial direction of the oil distribution disc body.
8. The motor symmetrical balance oil distribution disc according to claim 1 or 2, wherein the cross section of the high-pressure oil distribution groove is trapezoidal, a trapezoid short side of the high-pressure oil distribution groove is close to an inner circle of the oil distribution disc main body, a trapezoid long side of the high-pressure oil distribution groove is close to an outer circle of the oil distribution disc main body, a groove bottom of the high-pressure oil distribution groove is an inclined plane, and a distance between the trapezoid short side and an end face of the oil distribution groove main body where the high-pressure oil distribution groove is located is smaller than a distance between the long side and the end face of the oil distribution groove main body;
the cross section of the low-pressure oil distributing groove is trapezoid, the trapezoid long side of the low-pressure oil distributing groove is close to the inner circle of the oil distributing disc main body, the trapezoid short side of the low-pressure oil distributing groove is close to the outer circle of the oil distributing disc main body, the groove bottom of the low-pressure oil distributing groove is an inclined surface, and the distance between the trapezoid short side and the end face of the oil distributing groove main body where the low-pressure oil distributing groove is located is smaller than that between the long side and the end face of the oil distributing groove main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123160405.6U CN219012759U (en) | 2021-12-15 | 2021-12-15 | Symmetrical balance oil distribution disc for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123160405.6U CN219012759U (en) | 2021-12-15 | 2021-12-15 | Symmetrical balance oil distribution disc for motor |
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| Publication Number | Publication Date |
|---|---|
| CN219012759U true CN219012759U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123160405.6U Active CN219012759U (en) | 2021-12-15 | 2021-12-15 | Symmetrical balance oil distribution disc for motor |
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| CN (1) | CN219012759U (en) |
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2021
- 2021-12-15 CN CN202123160405.6U patent/CN219012759U/en active Active
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