CN212774589U

CN212774589U - Double-speed hydraulic motor

Info

Publication number: CN212774589U
Application number: CN202021108490.4U
Authority: CN
Inventors: 李庆辉
Original assignee: Hebei Paiyi Hydraulic Machinery Co ltd
Current assignee: Hebei Paiyi Hydraulic Machinery Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-03-23
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to a cycloid hydraulic motor technical field especially relates to a double speed hydraulic motor. The rotary valve comprises a valve group shell, a fixed shell, a rotary disc, an oil distribution disc, a rotary shell, an oil distribution sleeve, a rotary shaft, a rotor, a roller pin and a movable bushing; the valve bank shell, the fixed shell, the rotating disc, the oil distribution disc and the rotating shell form a hollow shell, and the fixed shell and the rotating disc are mutually nested; the novel oil distribution device is characterized in that a round hole with a notch is formed in the rotating shell, the roller pin is arranged in the notch, the rotor rotates in a matched mode with the roller pin, the oil distribution sleeve is fixedly arranged in the fixed shell and is far away from the rotor, splines are arranged at two ends of the rotating shaft, one end of the rotating shaft is matched with the inner key groove of the rotor, the other end of the rotating shaft is matched with the inner key groove of the oil distribution sleeve, a movable bushing is arranged between the oil distribution sleeve and the oil distribution plate, and the movable bushing is communicated with the oil distribution plate.

Description

Double-speed hydraulic motor

Technical Field

The utility model relates to a cycloid hydraulic motor technical field especially relates to a double speed hydraulic motor.

Background

The hydraulic motor is commonly called as an oil motor, and belongs to an executing element in a hydraulic system like an oil cylinder, but the difference is that the oil cylinder executes linear reciprocating motion, and the hydraulic motor realizes continuous rotary motion. The hydraulic motor is divided into a fixed-displacement motor and a variable-displacement motor, the rotating speed of the fixed-displacement motor is determined by the flow rate of oil entering the hydraulic motor, and the rotating speed of the variable-displacement motor is determined by the flow rate of the entering oil and is changed along with the change of the flow rate of the variable-displacement motor.

The cycloid hydraulic motor belongs to a low-speed hydraulic motor, has better low-speed stability and higher pneumatic efficiency, can be directly connected with a working structure, and simplifies the structure of a transmission device. The existing cycloid double-speed hydraulic motor has large clearance of internal parts, the fit clearance can not be adjusted, and the pressure-bearing capacity of a shell is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the technique that exists is not enough to the aforesaid, provides a double speed hydraulic motor, adopts movable bush compensation inner part's fit clearance.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a double-speed motor comprises a valve bank shell, a fixed shell, a rotating disc, an oil distribution disc, a rotating shell, an oil distribution sleeve, a rotating shaft, a rotor, a roller pin and a movable bushing; the valve bank shell is connected with the fixed shell through a bolt, the rotating disc is arranged close to the fixed shell, the rotating disc, the oil distribution disc and the rotating shell are connected through a screw, the oil distribution disc is arranged between the rotating disc and the rotating shell, the valve bank shell, the fixed shell, the rotating disc, the oil distribution disc and the rotating shell form a hollow shell, and the fixed shell and the rotating disc are mutually nested; the novel oil distribution device is characterized in that a round hole with a notch is formed in the rotating shell, the roller pins are arranged in the notch, the rotor is a gear with a key groove inside, the number of teeth of the rotor is one less than that of the roller pins, the rotor rotates in a matched mode with the roller pins, the oil distribution sleeve is fixedly arranged in the fixed shell and is far away from the rotor, one end of the rotating shaft is arranged in the rotor, the other end of the rotating shaft is arranged in the oil distribution sleeve, splines are arranged at two ends of the rotating shaft, one end of the rotating shaft is matched with the key groove in the rotor, the other end of the rotating shaft is matched with the key groove in the oil distribution sleeve, a movable bushing is arranged between the oil.

Further optimize this technical scheme, the movable bush includes interior bush and outer bush, interior bush inlays the dress in outer bush, set up the spring between interior bush and the outer bush, interior bush sets up the sealing member with outer bush in the contact part.

Further optimizing the technical scheme, a double-speed valve, a brake valve, a first oil port and a second oil port are arranged in the valve group shell, a hydraulic oil flow passage is arranged in the valve group shell, and the first oil port, the second oil port, the double-speed valve and the brake valve are communicated with the hydraulic oil flow passage.

Further optimize this technical scheme, set up bearing and seal assembly between fixed shell and the rolling disc, the bearing is double-row angular contact bearing, seal assembly includes sealing ring and two O shape circles, the sealing ring cross-section is ridge shape, O shape circle snare is established at the ridge inclined plane of sealing ring.

Compared with the prior art, the utility model has the advantages of it is following: 1. the movable bushing is arranged, and the structure is favorable for ensuring that the clearance generated by the motion fit of the internal part is compensated; 2. the thickness of the movable bushing is automatically adjusted, and the structure is favorable for ensuring that the clearance is automatically compensated through adaptive change of the thickness of the movable bushing; 3. the bearing uses an angular contact bearing, and the structure is favorable for ensuring the bearing to be stressed evenly and has long service life.

Drawings

Fig. 1 is a schematic side view of the present invention.

Fig. 2 is a schematic view of the top view structure of the present invention.

Fig. 3 is a sectional view of the plane a-a in fig. 2.

Fig. 4 is a sectional view of the plane B-B in fig. 1.

In the figure: 1. a valve block housing; 2. a stationary case; 3. rotating the disc; 4. an oil distribution disc; 5. rotating the shell; 6. an oil distribution sleeve; 7. a rotating shaft; 8. a rotor; 9. rolling needles; 10. a movable bushing; 11. a bearing; 12. a seal assembly; 13. a two-speed valve; 14. a brake valve; 15. a first oil port; 16. a second oil port.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: referring to fig. 1-4, the dual-speed hydraulic motor of the present invention comprises a valve block housing 1, a fixed housing 2, a rotating disk 3, an oil distribution disk 4, a rotating housing 5, an oil distribution sleeve 6, a rotating shaft 7, a rotor 8, a roller pin 9 and a movable bushing 10; the valve bank shell 1 is connected with the fixed shell 2 through bolts, the rotating disc 3 is arranged close to the fixed shell 2, the rotating disc 3, the oil distribution disc 4 and the rotating shell 5 are connected through screws, the oil distribution disc 4 is arranged between the rotating disc 3 and the rotating shell 5, the valve bank shell 1, the fixed shell 2, the rotating disc 3, the oil distribution disc 4 and the rotating shell 5 form a hollow shell, and the fixed shell 2 and the rotating disc 3 are mutually nested; the novel oil distribution device is characterized in that a round hole with a notch is formed in the rotating shell 5, the roller pins 9 are arranged in the notch, the rotor 8 is a gear with a key groove in the inner portion, the number of teeth of the rotor 8 is one less than that of the roller pins 9, the rotor 8 and the roller pins 9 rotate in a matched mode, the oil distribution sleeve 6 is fixedly arranged in the fixed shell 2 and is far away from the rotor 8, one end of the rotating shaft 7 is arranged in the rotor 8, the other end of the rotating shaft is arranged in the oil distribution sleeve 6, splines are arranged at two ends of the rotating shaft 7, one end of the rotating shaft 7 is matched with the key groove in the rotor 8, the other end of the rotating shaft is matched with the key groove in the oil distribution sleeve 6, a movable bushing 10 is arranged between the oil distribution sleeve 6 and the oil.

As a preferable arrangement, the movable bushing 10 includes an inner bushing and an outer bushing, the inner bushing is embedded in the outer bushing, a spring is disposed between the inner bushing and the outer bushing, and a sealing member is disposed at a contact portion between the inner bushing and the outer bushing.

As a preferable arrangement mode, a two-speed valve 13, a brake valve 14, a first oil port 15 and a second oil port 16 are arranged in the valve block housing 1, a hydraulic oil flow passage is arranged in the valve block housing 1, and the first oil port 15, the second oil port 16, the two-speed valve 13 and the brake valve 14 are communicated with the hydraulic oil flow passage.

As a preferable arrangement mode, a bearing 11 and a sealing assembly 12 are arranged between the fixed shell 2 and the rotating disc 3, the bearing 11 is a double-row angular contact bearing, the sealing assembly 12 comprises a sealing ring and two O-rings, the cross section of the sealing ring is in a ridge shape, and the O-rings are sleeved on the ridge inclined surface of the sealing ring.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A two-speed hydraulic motor is characterized in that: the valve group comprises a valve group shell (1), a fixed shell (2), a rotating disc (3), an oil distribution disc (4), a rotating shell (5), an oil distribution sleeve (6), a rotating shaft (7), a rotor (8), a roller pin (9) and a movable bushing (10); the valve bank shell (1) is connected with the fixed shell (2) through a bolt, the rotating disc (3) is arranged close to the fixed shell (2), the rotating disc (3), the oil distribution disc (4) and the rotating shell (5) are connected through a screw, the oil distribution disc (4) is arranged between the rotating disc (3) and the rotating shell (5), the valve bank shell (1), the fixed shell (2), the rotating disc (3), the oil distribution disc (4) and the rotating shell (5) form a hollow shell, and the fixed shell (2) and the rotating disc (3) are nested with each other; the inside of the rotating shell (5) is a round hole with a notch, the needle roller (9) is arranged in the notch, the rotor (8) is a gear with a key groove inside, the number of teeth of the rotor (8) is one less than that of the needle rollers (9), the rotor (8) and the needle roller (9) are matched to rotate, the oil distribution sleeve (6) is arranged in the fixed shell (2) and is far away from the rotor (8), one end of the rotating shaft (7) is arranged in the rotor (8), the other end is arranged in the oil distribution sleeve (6), splines are arranged at two ends of the rotating shaft (7), one end of the rotating shaft (7) is matched with the inner key groove of the rotor (8) and the other end is matched with the inner key groove of the oil distribution sleeve (6), a movable bushing (10) is arranged between the oil distribution sleeve (6) and the oil distribution disc (4), the movable bushing (10) is communicated with an oil distribution disc (4) and an oil passage in the oil distribution sleeve (6).

2. The two-speed hydraulic motor of claim 1, wherein: the movable bushing (10) comprises an inner bushing and an outer bushing, the inner bushing is embedded in the outer bushing, a spring is arranged between the inner bushing and the outer bushing, and a sealing element is arranged at the contact part of the inner bushing and the outer bushing.

3. The two-speed hydraulic motor of claim 2, wherein: the hydraulic brake valve is characterized in that a double-speed valve (13), a brake valve (14), a first oil port (15) and a second oil port (16) are arranged in the valve group shell (1), a hydraulic oil flow passage is arranged in the valve group shell (1), and the first oil port (15), the second oil port (16), the double-speed valve (13) and the brake valve (14) are communicated with the hydraulic oil flow passage.

4. The two-speed hydraulic motor of claim 2, wherein: set up bearing (11) and seal assembly (12) between fixed shell (2) and rolling disc (3), bearing (11) are double row angular contact bearing, seal assembly (12) are including sealing ring and two O shape circles, the sealing ring cross-section is the ridge shape, the ridge inclined plane at the sealing ring is established to O shape snare.