CN218235341U

CN218235341U - Axial flow distribution cycloid hydraulic motor

Info

Publication number: CN218235341U
Application number: CN202222428827.5U
Authority: CN
Inventors: 王志生; 李璐; 王建玺
Original assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Current assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-01-06
Anticipated expiration: 2032-09-14

Abstract

The utility model relates to an axle distribution cycloid hydraulic motor belongs to hydraulic transmission technical field. The front and the back of the output shaft of the motor installed in the body shell are respectively provided with a bearing, a 6/7 tooth structure is adopted to rotate a stator meshing pair, and particularly, the motor connecting bolts are uniformly distributed in a wheel flange connecting mode, and the number of the motor connecting bolts is the same as that of the stator pin teeth. The utility model has the advantages of simple and compact integral structure, the pressure level of operation is high, and its simple structure is reliable, manufacturing process nature is good, assembly process nature is good to satisfy the user demand.

Description

Axial flow distribution cycloid hydraulic motor

Technical Field

The utility model relates to a cycloid hydraulic motor, especially an axle distribution flow cycloid hydraulic motor belong to hydraulic transmission technical field.

Background

The cycloid hydraulic motor is a common hydraulic driving device, is a low-speed large-torque motor, has the advantages of small volume, large unit power density, high efficiency, wide rotating speed range and the like, is widely applied, and is more widely applied along with further improvement of the industrial and agricultural development level in China.

The basic structure of the device is that a liquid inlet and a backflow port are arranged on a body shell or a rear cover, one end of the device is provided with a cycloid pinwheel meshing pair and a flow distribution mechanism, the flow distribution mechanism can be placed in front of or behind the cycloid pinwheel meshing pair and generally distributes flow for a shaft valve in front (on one side of the body shell), a circular surface of a flow distribution system is axially arranged, plane flow distribution is arranged on the rear (on one side of the rear cover), a plane of the flow distribution system is radially arranged, and the other end of the flow distribution system is provided with an output shaft. The rotor of the cycloidal pin gear meshing pair is meshed with the external teeth at one end of the universal driving shaft through the internal spline, and the other end of the universal driving shaft is in transmission connection with the output shaft. When the cycloidal pin gear pair works, the flow distribution mechanism enables the liquid inlet to be communicated with the expansion meshing cavity of the cycloidal pin gear pair and enables the contraction cavity of the cycloidal pin gear pair to be communicated with the reflux port. As a result, pressure liquid enters the body shell or the rear cover from the liquid inlet and then enters the expansion meshing cavity formed by the cycloid pin gear meshing pair, so that the volume of the expansion meshing cavity is continuously enlarged, and meanwhile, liquid in the contraction meshing cavity formed by the cycloid pin gear meshing pair flows back from the return port; in the process, the rotor of the cycloidal pin gear meshing pair is driven to rotate by the pressure difference between the expansion meshing cavity and the contraction meshing cavity, and the rotation is transmitted to the output shaft through the linkage shaft to be output, so that the conversion from hydraulic energy to mechanical energy is realized. Meanwhile, the flow distribution mechanism is synchronously driven to rotate by the linkage shaft, and the communication state is repeatedly and continuously switched, so that the conversion process is continued. Thus, the motor can continuously output torque, and the cycloid pin gear meshing pair and the flow distribution mechanism are the core of the cycloid hydraulic motor.

According to the knowledge of the applicant, the application development of the existing shaft valve flow distribution cycloid hydraulic motor with a small structure is rapid, the existing shaft valve flow distribution cycloid hydraulic motor mainly comprises an OMP series of Danish DANFOSS, an H series of American EATON, an MP series of Bulgarian M + S, a BMP series of the applicant company and the like, an integral 6/7-tooth rotating stator meshing pair is adopted, a standard wheel flange mounting connection mode is provided according to the application requirement, the arrangement of an oil port arrangement direction in the prior art is not favorable for the arrangement of an oil passage, a position of a connecting bolt is usually adopted as an oil inlet or outlet passage, the number of the connecting bolt is reduced, and the pressure grade of the motor operation needs to be reduced.

Disclosure of Invention

The utility model discloses aim at: aiming at the problems in the prior art, the motor has the advantages of compact structure, small overall dimension, high operating pressure level, simple and reliable structure, good manufacturing process and good assembly process, and adopts a rotor-stator meshing pair with a 6/7 tooth structure, in particular to a motor in a wheel flange connection mode.

In order to achieve the above purpose, the applicant proposes a cycloid hydraulic motor structure with compact structure and high part universality through structural analysis of the existing motor, the technical scheme of the utility model: a kind of axial flow distribution cycloid hydraulic motor, including front cover and body shell that link firmly each other, and one end links firmly with body shell through the spacer disc, another end and the back cover links firmly the rotating stator engagement pair; an output shaft with an outer end extending out of the shaft extension is arranged in the body shell, and the output shaft is in transmission connection with the rotor-stator meshing pair through a linkage shaft; the improvement is that: the body shell front end has the casting and leads to oily passageway, it sets up for radial position to lead to oily passageway, it communicates with the oil port hole to lead to oily passageway through connecting bolt hole position hole on the body shell, it communicates with a check valve of motor to lead to oily passageway front end, another check valve of motor passes through the step aperture and directly communicates with another oil port hole.

The front end and the rear end of the output shaft are provided with two bearings, the diameter of a flow distribution shaft of the output shaft and the diameters of a front bearing and a rear bearing installation shaft are set to be the same size, the flow distribution pore passage of the body shell and the front bearing and the rear bearing installation holes are set to be the same through hole, and the front bearing and the rear bearing are needle bearings.

Preferably, the front bearing and the rear bearing are respectively arranged at the front end and the rear end of the output shaft, the front bearing is a cylindrical roller bearing, the rear bearing is a needle bearing, the diameter of the flow distribution shaft of the output shaft and the diameter of the front bearing mounting shaft are set to be the same size, the flow distribution pore passage of the body shell and the rear bearing mounting hole are set to be the same through hole, the front bearing is a full-filling cylindrical roller bearing, the support frame of the cylindrical roller bearing adopts an inward concave grinding process, and the excircle of the support frame of the front bearing is mounted on the circular surface of the stepped hole of the body shell.

Still further preferably, the output shaft rear bearing mounting shaft diameter is provided with an oil through small hole.

The rotor-stator meshing pair is of a cycloid rotor-stator meshing pair structure with a 6/7 tooth structure, the rotor-stator meshing pair is fixedly connected with the body shell, the partition disc and the rear cover into a whole through uniformly distributed connecting bolts, and the number of the connecting bolts is the same as that of the stator teeth. The outer diameter of the stator is between 84.8mm and phi 88.2 mm.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the utility model discloses an axle distribution cycloid hydraulic motor, through the overall arrangement structure research to cycloid hydraulic motor, this motor has pressure level height, and output shaft bearing capacity is strong, and motor overall structure is simple compact, and the motion is steady reliable, and manufacturing process is good, assembly and maintenance process are good, satisfy the user demand.

Drawings

In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the following embodiments of the present invention, in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

In the figure: the oil-gas separation device comprises an output shaft 1, a key 2, a dust ring 3, a shaft seal 4, a front cover 5, a one-way valve body 6, a sealing ring 7, a valve ball 8, a body shell 9, an oil port cover 10, an O-shaped ring 11, a separation disc 12, a rotor and stator meshing pair 13, a rear cover 14, a plug screw 15, a gasket 16, a steel gasket 17, a connecting bolt 18, a rear bearing 19, a linkage shaft 20, a front bearing 21, a front retaining ring 22, a plane thrust bearing 23, a screw 24, an O-shaped ring 25, a retaining ring 26, an oil through small hole A and an oil through channel B.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

In the figure: output shaft 101, front cover 102, body shell 103, front bearing 104, O-ring 105, retaining ring 106. (the same parts are the same as the parts in FIG. 1 in terms of serial numbers)

Fig. 3 is a right side view of the embodiment of fig. 1 or 2.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

The above object is achieved by the following embodiments:

example one

Referring to fig. 1, the basic structure of the axial flow distribution cycloid hydraulic motor of the present embodiment includes a front cover 5 and a body shell 9, which are fixedly connected to each other, and a rotor-stator meshing pair 13, one end of which is fixedly connected to the body shell 9 through a partition plate 12, and the other end of which is fixedly connected to a rear cover 14; an output shaft 1 with an outer end extending out of a shaft extension is arranged in the body shell 9, and the output shaft 1 is in transmission connection with a rotor-stator meshing pair 13 through a universal driving shaft 20; the 9 front ends of body shell have the casting and lead to oil passageway B, lead to oil passageway B and set up for radial position, lead to oil passageway B and pass through mounting position hole and the oil port hole ditch of connecting bolt 18 on the body shell, lead to oil passageway B front end and communicate with a check valve of motor, another check valve of motor passes through the step aperture and directly communicates with another oil port hole, and the check valve of motor communicates with two oil ports of motor respectively like this. The utility model discloses the application is agreed to the direction of motor, and 5 one end of protecgulum of motor are the front end, and 14 one end of back lid of motor are the rear end.

The check valve is composed of a check valve body 6, a sealing ring 7 and a valve ball 8, the valve ball 8 is limited in an inner cavity of the check valve body 6 through a riveting process, oil entering the check valve body 6 forms one-way flow, the sealing ring 7 seals a cavity formed by the check valve, and the cavity of the check valve is communicated with an inner cavity of the motor through a pore channel.

Two bearings are arranged at the front end and the rear end of the output shaft 1, the diameter of a flow distribution shaft of the output shaft 1, the diameter of a front bearing 21 and the diameter of a rear bearing 19 are set to be the same size, the diameter of the flow distribution hole of the body shell 9, the mounting holes of the front bearing 21 and the rear bearing 19 are set to be the same through hole, and the front bearing 21 and the rear bearing 19 are needle bearings. The flow distribution shaft diameter is a cylindrical surface which is meshed with the flow distribution hole of the output shaft 1 and the body shell 9, and the flow distribution hole is a circular surface which is meshed with the flow distribution shaft diameter of the body shell 9 and the output shaft 1.

The axial direction of the output shaft 1 is axially limited at the front end by a front retainer ring 22, a plane thrust bearing 23 and a retainer ring 26, and axially limited at the rear end by abutting against the partition plate 12.

The rear bearing 19 installation shaft diameter position of output shaft 1 is provided with the oil feed aperture, the oil feed aperture is in the rolling element cavity of introducing the fluid of motor inner chamber more swiftly into rear bearing 19, plays lubricated bearing's effect.

Example two

Referring to fig. 2, the basic structure of an axial flow cycloid hydraulic motor of the present embodiment is improved from the first embodiment mainly in the following aspects.

The front end and the rear end of the output shaft 101 are provided with two bearings, the front bearing 104 is a cylindrical roller bearing, the rear bearing 19 is a needle bearing, the diameter of the flow distribution shaft of the output shaft 101 and the diameter of the front bearing 104 mounting shaft are set to be the same size, the flow distribution pore passage of the body shell 103 and the rear bearing 19 mounting hole are set to be the same through hole, the front bearing 104 is a full-filling cylindrical roller bearing, the support frame of the cylindrical roller bearing adopts an inwards concave grinding process, and the excircle of the support frame of the front bearing 104 is mounted on the circular surface of the stepped hole of the body shell.

The utility model discloses apply change the vice 13 cycloidal stator meshing pair structure that adopts 6/7 tooth structure of stator meshing, change the vice 13 of stator meshing and link firmly as a whole through the connecting bolt 18 of equipartition and body shell 9, separation disc 12 and back lid 14, connecting bolt 12 quantity is the same with stator needle tooth number, as shown in fig. 3, the external diameter size of stator is between phi 84.8mm to phi 88.2 mm.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A kind of axial flow distribution cycloid hydraulic motor, including front cover and body shell that link firmly each other, and one end links firmly with body shell through the spacer disc, another end and the back cover links firmly the rotating stator engagement pair; an output shaft with an outer end extending out of the shaft extension is arranged in the body shell, and the output shaft is in transmission connection with the rotor-stator meshing pair through a linkage shaft; the method is characterized in that: the body shell front end has the casting and leads to oily passageway, it sets up for radial position to lead to oily passageway, it communicates with the oil port hole to lead to oily passageway through connecting bolt hole position hole on the body shell, it communicates with a check valve of motor to lead to oily passageway front end, another check valve of motor passes through the step aperture and directly communicates with another oil port hole.

2. The axial flow gerotor hydraulic motor of claim 1, further comprising: the front end and the rear end of the output shaft are provided with two bearings, the diameter of a flow distribution shaft of the output shaft and the diameters of a front bearing and a rear bearing installation shaft are set to be the same size, the flow distribution pore passage of the body shell and the front bearing and the rear bearing installation holes are set to be the same through hole, and the front bearing and the rear bearing are needle bearings.

3. The axial flow gerotor hydraulic motor of claim 1, further comprising: the front bearing and the rear bearing are roller bearings, the diameter of a flow distribution shaft of the output shaft and the diameter of a front bearing mounting shaft are set to be the same size, the flow distribution pore passage of the body shell and the rear bearing mounting hole are set to be the same through hole, the front bearing is a full-complement cylindrical roller bearing, a support frame of the cylindrical roller bearing adopts an inwards concave grinding process, and the excircle of the support frame of the front bearing is mounted on the circular surface of the step hole of the body shell.

4. The axial flow cycloid hydraulic motor of claim 2 or 3, wherein: and the diameter of the output shaft rear bearing mounting shaft is provided with an oil through small hole.

5. The axial flow gerotor hydraulic motor of claim 1, further comprising: the rotor-stator meshing pair is of a cycloid rotor-stator meshing pair structure with a 6/7 tooth structure, the rotor-stator meshing pair is fixedly connected with the body shell, the partition disc and the rear cover into a whole through uniformly distributed connecting bolts, and the number of the connecting bolts is the same as that of the stator teeth.

6. The axial flow gerotor hydraulic motor of claim 5, further comprising: the check valve is composed of a check valve body, a sealing ring and a valve ball, the valve ball is limited in an inner cavity of the check valve body through a riveting process, the sealing ring seals a cavity formed by the check valve, and the check valve cavity is communicated with an inner cavity of the motor through a pore channel.

7. The axial flow gerotor hydraulic motor of claim 6, further comprising: the outer diameter of the stator is between 84.8mm and phi 88.2 mm.