CN216842029U

CN216842029U - Shell rotation type double-speed cycloid hydraulic motor

Info

Publication number: CN216842029U
Application number: CN202220289178.2U
Authority: CN
Inventors: 于刚
Original assignee: Jiangsu Kaiyuan Precision Machinery Co ltd
Current assignee: Jiangsu Kaiyuan Precision Machinery Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-06-28
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a shell rotation type double speed cycloid hydraulic motor, concretely relates to hydraulic drive spare technical field, produce subassembly, distribution assembly and valve body subassembly including moment, the distribution assembly includes the casing, and the hole has been seted up to the casing, and the casing is equipped with the distribution valve through the hole, and the distribution valve is connected with the casing, the valve body subassembly includes the valve body, is provided with the double speed case on the casing or in the valve body, has seted up five heavy grooves altogether on the interior pore wall of casing or the outer face of cylinder of distribution valve, is equipped with five sealing members between distribution valve and the casing, has constituted four sealed working chambers between five adjacent heavy grooves and the sealing member, the utility model discloses a new distribution valve structure has realized the variable speed function of motor, and the structure simplifies greatly, and is lower to machining precision's requirement, and the reliability improves greatly, and the cost is lower.

Description

Shell rotation type double-speed cycloid hydraulic motor

Technical Field

The utility model relates to a hydraulic drive spare technical field specifically is a shell rotation formula double speed cycloid hydraulic motor.

Background

The excavator belongs to a first soldier in the engineering machinery industry and is also a weather meter in the engineering machinery industry, integrates the advantages of a bulldozer and a loader, and can realize the function of one machine with multiple purposes. Along with the deepening of novel urbanization construction and new rural construction and the continuous improvement of domestic labor cost, the small excavator, particularly the miniature excavator has huge potential in the aspects of small earth and stone engineering, robot-to-human and the like, particularly in the occasions with limited space and no access or limited operation of medium and large controllers, the small excavator can fully exert the characteristics of small volume and flexible action, even can perform indoor operation, and a large amount of manual heavy labor can be replaced by the small excavator. According to the development rule of the excavating machinery industry in developed countries, the market share of the small mini-type excavator exceeds 50%, so that the market prospect of the small mini-type and mini-type excavators in China in the future is wide.

One of the core elements of the small miniature excavator is a variable displacement traveling motor, 2 motors are used on each machine, the motor mechanism is compact, high-speed and low-speed function switching can be realized, and the whole machine has good passing performance, so that the motor is a standard assembly of the miniature excavator abroad, and a high-end product of a domestic manufacturer also selects the motor. The motor mechanism can realize high-speed and low-speed conversion, and can be switched to a high-speed state when the machine needs to be transferred, so that the transfer time is saved; when the excavator works, the low speed can be selected according to the requirements of a field, and the purpose of large-torque walking or climbing is achieved.

In order to realize the function of high-speed and low-speed conversion, most of motor mechanisms in the prior art have complex structures and more parts, so the requirements on machining precision and assembly precision are higher, the reliability of the motor mechanism is unstable, and in addition, the machining cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, the utility model provides a shell rotation type double speed cycloid hydraulic motor through having set up double speed case and four working chambers, has adopted new distribution valve structure, has realized the high low-speed conversion function of motor, and simple structure, cost reduction to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a shell rotation type double-speed cycloid hydraulic motor comprises a torque generation assembly, a flow distribution assembly and a valve body assembly, wherein the flow distribution assembly comprises a shell, an inner hole is formed in the shell, a flow distribution valve is assembled in the shell through the inner hole and connected with the shell, the valve body assembly comprises a valve body, and a double-speed valve core is arranged on the shell or in the valve body.

The inner hole wall of the shell or the outer cylindrical surface of the distribution valve is provided with five sinking grooves which are respectively a first sinking groove, a second sinking groove, a third sinking groove, a fourth sinking groove and a fifth sinking groove, five sealing elements are arranged between the distribution valve and the shell and respectively are a first sealing element, a second sealing element, a third sealing element, a fourth sealing element and a fifth sealing element, a working cavity a is formed between the first sinking groove and the second sinking groove through the first sealing element and the second sealing element, a working cavity b is formed between the second sinking groove and the third sinking groove through the second sealing element and the third sealing element, a working cavity c is formed between the third sinking groove and the fourth sinking groove through the third sealing element and the fourth sealing element, and a working cavity d is formed between the fourth sinking groove and the fifth sinking groove through the fourth sealing element and the fifth sealing element.

Wherein the diameters of the first sinking groove, the second sinking groove, the third sinking groove, the fourth sinking groove and the fifth sinking groove are gradually reduced.

Wherein, first heavy groove, second heavy groove, third heavy groove, fourth heavy groove and fifth heavy groove all set up with the hole is coaxial, and three heavy groove is parallel arrangement in proper order.

Wherein, two ends of the double-speed valve core are respectively connected with a double-speed valve spring, and the outer sides of the two double-speed valve springs are respectively provided with a plug; and a brake valve core is also arranged in the valve body, two ends of the brake valve core are respectively connected with the brake valve springs, and the outer sides of the two brake valve springs are respectively provided with a plug. Under the action of the two brake valve springs, the brake valve core is positioned at the middle position, and the two plugs control the positions of the brake valve springs and ensure that the internal hydraulic oil does not leak; under the action of the two-speed valve springs, the two-speed valve core is located at the middle position, hydraulic oil is sealed inside the valve body, and the two plugs control the positions of the two-speed valve springs and ensure that the hydraulic oil inside does not leak.

The brake valve core and the double-speed valve core are respectively arranged in the valve hole, the brake valve core and the valve body form a three-position four-way valve, the double-speed valve core and the valve body form a three-position six-way valve, and the four working cavities are controlled by the double-speed valve core to feed oil and return oil.

The moment generating assembly comprises a front cover, a stator and rotor pair and a flow distribution disc which are sequentially connected, wherein 7 or 9 flow distribution holes are formed in the flow distribution disc, and the flow distribution holes are rectangular holes.

The flow distribution valve is provided with 12 or 16 flow distribution holes, and the flow distribution holes and the end face of the flow distribution plate with the flow distribution holes rotate relatively to complete the whole flow distribution process, and the flow distribution is continuously carried out along with the mutual movement of the flow distribution valve and the flow distribution plate, so that the motor can continuously output torque and rotating speed.

The distribution valve is provided with a through hole, a linkage shaft is arranged in the through hole, splines are arranged at two ends of the linkage shaft respectively, one end of the linkage shaft is connected with the spline in the rotor of the stator-rotor pair, and the other end of the linkage shaft is connected with the spline sleeve.

The distribution valve is connected with the shell through the spline housing, and a spring is arranged between the distribution valve and the spline housing, so that the end face of the distribution valve is tightly combined with the end face of the distribution plate.

The outer surface of the shell is connected with the inner surface of a bearing in an assembling mode, the bearing is installed in a hub, a hub clamping groove is formed in the hub, a first check ring is arranged in the hub clamping groove, and the first check ring is arranged between the hub and the bearing.

The outer surface of the shell is provided with a clamping groove, a second retaining ring is arranged in the clamping groove, and the second retaining ring is arranged between the bearing and the shell.

When the hydraulic energy conversion device works, high-pressure hydraulic oil entering the valve body is distributed through the distributing valve and enters the torque generation part of the motor, elements of the torque generation part are driven to work, the high-pressure oil works to generate torque and then becomes low-pressure hydraulic oil, and the low-pressure hydraulic oil flows out of the motor through the distributing valve to complete the conversion process from hydraulic energy to mechanical energy; the generated torque is output to the hub through the action of the linkage shaft, and then other products connected to the hub are driven.

The utility model discloses a technological effect and advantage:

1. the utility model comprises a brand new distribution valve structure, which greatly simplifies the structure, uses fewer product parts, has lower requirement on the processing precision, greatly improves the reliability and has lower cost while meeting the requirement of high and low speed conversion;

2. the utility model discloses a casing hole and join in marriage a class valve module and all be equipped with the echelonment structure, this structure utilizes the pressure of hydraulic oil to compress tightly the laminating with the valve module of joining in marriage a class on the valve plate, has guaranteed the smooth completion of joining in marriage class work to the structure has been simplified.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1, circled A;

FIG. 3 is a schematic view of the sinking groove;

FIG. 4 is a schematic view of a torque generating assembly;

FIG. 5 is a schematic view of a port plate oil hole;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is a schematic view of a distributing bore of a distributing valve;

fig. 8 is a sectional view of B-B in fig. 7.

In the figure: 1. a torque generating assembly; 11, a front cover; 12. a stator and a rotor pair; 13. a valve plate; 2. a flow distribution assembly; 201. a first sink tank; 202. a second sink tank; 203. a third sink tank; 204. a fourth sink tank; 205. a fifth sinking groove; 3. a valve body assembly; 4. a stud; 5. a linkage shaft; 6. a first seal member; 7. a second seal member; 8. a third seal member; 9. a fourth seal member; 10. a fifth seal member; a. a first working chamber; b. a second working chamber; c. a third working chamber; d. and a fourth working chamber.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b):

as shown in fig. 1 to 4, a front cover 11, a stator-rotor pair 12, and a valve plate 13 constitute a torque generating assembly of a motor, an outer surface of a housing is assembled and connected with an inner surface of a bearing, the bearing is installed in a hub, a hub slot is formed in the hub, a first check ring is arranged in the hub slot, the first check ring is arranged between the hub and the bearing, a slot is formed in the outer surface of the housing, a second check ring is arranged in the slot, and the second check ring is arranged between the bearing and the housing;

the inner hole wall of the shell and the outer cylindrical surface of the distributing valve are provided with five sinking grooves which are respectively a first sinking groove 201, a second sinking groove 202 (shown in figure 8), a third sinking groove 203, a fourth sinking groove 204 and a fifth sinking groove 205, the diameters of the four grooves are gradually reduced, in addition, in order to prevent the motor from leaking, the sealing device is also provided with five sealing elements which are respectively a first sealing element 6, a second sealing element 7, a third sealing element 8, a fourth sealing element 9 and a fifth sealing element 10, the adjacent five sinking grooves and the five sealing elements respectively form four independent working cavities which are respectively a first working cavity a, a second working cavity b, a third working cavity c and a fourth working cavity d, and the four working cavities are controlled by a double-speed valve core to feed oil and return oil;

as shown in fig. 5 to 6, the port plate 13 is in a three-stage stepped structure, seven rectangular holes are port holes, and pressure oil in the port holes is transferred to the stator-rotor pair 12 to convert pressure energy into kinetic energy;

as shown in fig. 7 to 8, the distributing valve is in a five-step structure, four groove structures on the step are working cavities a, b, c and d, and twelve of the fan-shaped holes are distributing holes.

When the hydraulic oil flows through the working cavity a, the working cavity b, the working cavity c and the working cavity d in the distributing valve, the quantity of the working cavities through which high-pressure oil or low-pressure oil flows can be controlled and distributed by the double-speed valve core, so that the quantity of the high-pressure oil or low-pressure oil flowing through the twelve distributing holes can be controlled and controlled, and the high speed or low speed can be controlled by the method.

Claims

1. A shell rotation type double-speed cycloid hydraulic motor comprises a torque generation assembly, a flow distribution assembly and a valve body assembly, wherein the flow distribution assembly comprises a shell, an inner hole is formed in the shell, a flow distribution valve is assembled in the shell through the inner hole and connected with the shell, the valve body assembly comprises a valve body, and the shell or the valve body is internally provided with a valve core, the inner hole wall of the shell or the outer cylindrical surface of the flow distribution valve is internally provided with five sinking grooves which are respectively a first sinking groove, a second sinking groove, a third sinking groove, a fourth sinking groove and a fifth sinking groove, five sealing elements are arranged between the flow distribution valve and the shell and respectively comprise a first sealing element, a second sealing element, a third sealing element, a fourth sealing element and a fifth sealing element, a working cavity a is formed between the first sinking groove and the second sinking groove through the first sealing element and the second sealing element, and a second sealing element is arranged between the second sinking groove and the third sinking groove through the second sealing element, The third sealing element forms a working cavity b, a working cavity c is formed between the third sinking groove and the fourth sinking groove through the third sealing element and the fourth sealing element, and a working cavity d is formed between the fourth sinking groove and the fifth sinking groove through the fourth sealing element and the fifth sealing element.

2. The shell-turn two-speed gerotor hydraulic motor of claim 1, wherein the first, second, third, fourth and fifth sink slots have diameters that gradually decrease.

3. The shell-rotation two-speed cycloid hydraulic motor of claim 1 wherein the first, second, third, fourth and fifth sink slots are all coaxial with the bore, the three sink slots being in parallel alignment in sequence.

4. The shell-rotation two-speed cycloid hydraulic motor of claim 1 wherein two ends of the two-speed spool are connected to two-speed valve springs respectively, and plugs are provided on outer sides of the two-speed valve springs respectively.

5. The shell-rotation two-speed cycloid hydraulic motor of claim 1 further comprising a brake valve spool disposed in the valve body, wherein two ends of the brake valve spool are connected to the brake valve springs respectively, and plugs are disposed on outer sides of the two brake valve springs respectively.

6. The shell-rotation two-speed gerotor hydraulic motor of claim 1, wherein the torque generating assembly comprises a front cover, a stator-rotor pair and a port plate connected in sequence.

7. The shell-rotation type two-speed cycloid hydraulic motor as claimed in claim 1, wherein the distribution valve is provided with a through hole, a linkage shaft is arranged in the through hole, both ends of the linkage shaft are respectively provided with a spline, one end of the linkage shaft is connected with a spline in a rotor of the stator-rotor pair, and the other end of the linkage shaft is connected with a spline sleeve.

8. The shell-turn two-speed gerotor hydraulic motor of claim 1, wherein the flow distribution valve is connected to the housing by a splined hub, and a spring is disposed between the flow distribution valve and the splined hub.

9. The shell-rotation two-speed cycloid hydraulic motor of claim 1 wherein the outer surface of the housing is assembled with the inner surface of the bearing, the bearing is mounted in the hub, the hub is provided with a hub slot, the hub slot is provided with a first retaining ring, and the first retaining ring is disposed between the hub and the bearing.

10. The shell-rotation type two-speed cycloid hydraulic motor of claim 1 wherein the housing has a slot formed in an outer surface thereof, a second retaining ring disposed in the slot, the second retaining ring disposed between the bearing and the housing.