CN203186097U - Single-pump double-motor hydraulic transmission system - Google Patents
Single-pump double-motor hydraulic transmission system Download PDFInfo
- Publication number
- CN203186097U CN203186097U CN 201320044801 CN201320044801U CN203186097U CN 203186097 U CN203186097 U CN 203186097U CN 201320044801 CN201320044801 CN 201320044801 CN 201320044801 U CN201320044801 U CN 201320044801U CN 203186097 U CN203186097 U CN 203186097U
- Authority
- CN
- China
- Prior art keywords
- valve
- pump
- oil
- variable
- safety
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Fluid Gearings (AREA)
Abstract
The utility model discloses a single-pump double-motor hydraulic transmission system. The single-pump double-motor hydraulic transmission system comprises a variable pump. The variable pump is connected to an oil tank through a filter. A speed regulating valve is connected to a branch of the variable pump. A variable pump control mechanism is connected to the speed regulating valve. Solenoid valves are connected to an oil circuit of the variable pump. A left variable displacement motor is connected to the solenoid valves. Overflow valves are connected to the two ends of the left variable displacement motor. One solenoid valve is connected to the left variable displacement motor. A left hydraulic cylinder is connected to the solenoid valves. A flush valve is connected between an oil inlet circuit and an oil return circuit in front of the solenoid valves. One safety valve is connected behind the flush valve. Filters are connected between the safety valves and the oil tank. The safety valves are symmetrically arranged between the oil inlet circuit and the oil return circuit. Another safety valve is connected to an intersection of the symmetrical safety valves and connected with the speed regulating valve. An oil replenishing pump is connected to the oil tank. One-way valves are symmetrically connected between the oil inlet circuit and the oil return circuit in front of the safety valves, and connected with the safety valves. The single-pump double-motor hydraulic transmission system is simple in structure, flexible to manipulate, high in speed, and good in power performance.
Description
Technical field
The utility model belongs to agriculture tracklaying vehicle driving system technical field, relates to a kind of single pump double motor hydraulic drive system.
Background technology
At present, known trac. type of drive mainly contains machinery and two kinds of type of drive of fluid pressure type, is specifically described as follows:
The mechanical type type of drive is to rely on the reasonable combination of mechanical component and physical construction to realize that driving engine moves and transmission and the exchange of power.Just motion and power spread out of from engine shaft, be delivered on the flywheel then, flywheel is power with move through belt and be delivered on the belt pulley then, by belt pulley power and motion are delivered to retarder then, next retarder will move with transmission of power above vehicle bridge, drive the rotation of wheel to realize travelling of vehicle by vehicle bridge then.Wherein after power and motion are delivered to vehicle bridge, utilize the differentia transmission principle of wheel reduction gear can realize turning to of vehicle.
The fluid pressure type type of drive is to utilize the appropriate combination mode of Hydraulic Elements in hydraulic circuit to realize the various motions of vehicle.Known hydraulic transmission mode has type of drive such as single pump list motor, double pump double motor.
Above-mentioned said type of drive has following deficiency and shortcoming: mechanical type of drive is mainly used in the little transmission of power, in the bigger transmission of power, seldom use it, single pump list motor type of drive expense is not high in the hydraulic transmission mode, but driving efficiency is lower, double pump duplex set efficient height, but the expense of this hydrostatic drive combination is higher, is not suitable for agricultural mechanical field and uses.
Summary of the invention
In order to overcome the deficiencies in the prior art and defective, the purpose of this utility model is to provide a kind of single pump double motor hydraulic drive system.It not only can satisfy above-mentioned requirement, and can control the rotating speed of left and right sides car when tractor steering by the discharge capacity that changes two variable hydraulic motors, to realize turning to flexibly of vehicle.
The technical scheme that its technical matters that solves the utility model adopts is a kind of single pump double motor hydraulic drive system, comprise controllable capacity pump, the controllable capacity pump control mechanism, check valve, safety valve, flush valve, electromagnetic valve, by pass valve, hydraulic actuating cylinder, variable-dis-placement motor, filter, fuel tank, slippage pump, described controllable capacity pump is received on the fuel tank by filter, and described governor valve is received on the branch road of controllable capacity pump, described controllable capacity pump control mechanism is received on the governor valve, described electromagnetic valve is connected on the oil circuit of controllable capacity pump, and described left variable-dis-placement motor is connected on the electromagnetic valve, and described by pass valve is connected to the two ends of left variable-dis-placement motor, described electromagnetic valve is connected to be done on the variable-dis-placement motor, the described hydraulic actuating cylinder of doing is connected on the electromagnetic valve, and described flush valve is connected between the electromagnetic valve oil-feed and oil return line before, and described safety valve is connected to after the flush valve, described filter is connected between safety valve and the fuel tank, described safety valve symmetry is installed between in-line and the oil return line, and described safety valve is connected to the intersection of symmetrical safety valve, and is connected with governor valve, described slippage pump is connected on the fuel tank, and described check valve symmetry is connected on in-line and the oil return line and is connected before safety valve and with safety valve.
The speed of travel of described vehicle can be regulated by the regulated variable capacity of pump.
Advancing and falling back of described vehicle can change by changing variable capacity of pump direction.
The turning of described vehicle can be by regulating the rotating speed of two HM Hydraulic Motor, and when speed discrepancy, vehicle can be realized rotating speed.
Described flush valve is used for regulating the temperature of fluid in the closed hydraulic loop, cleans fluid.
Described slippage pump is used for supply owing to the fuel feeding deficiency of leaking and the flushing loss produces.
A kind of single pump double motor hydraulic drive system principle of work of the utility model is:
The high-voltage oil liquid of master variable pump outflow drives two variable-dis-placement motors and rotates, and drives drive wheel by retarder then and makes vehicle to run, and the low pressure fluid that flows out from variable-dis-placement motor flows back to master variable pump formation closed circuit; Electro-hydraulic proportional valve is used for controlling size and the direction of master variable pump swashplate angle, thus control vehicle speed and advance, retreat, the fluid of electro-hydraulic proportional valve is supplied with by slippage pump; Variable-dis-placement motor is controlled by displacement-force feedback mode, namely by changing the electric signal of electromagnetic proportional valve, control the movement of the piston of hydraulic actuating cylinder, thereby car speed is regulated at the inclination angle of control variable motor swashplate within the specific limits; Can realize pivot stud in theory by two position four-way solenoid valve power on/off; The electromagnetic valve meta can make under the not flame-out situation of vehicle, and idling is stopped; By pass valve can guarantee that vehicle oppositely repairing under the situation such as stops anxious, can not occur inhaling empty; Flush valve makes low pressure fluid flow back to fuel tank by the movement of relatively controlling spool of pump import and export oil pressure, system is cleaned with fluid cooled off; Slippage pump replenishes the fluid of system loss except supplying with control fluid, and check valve guarantees the low pressure repairing.
The beneficial effects of the utility model are can utilize the variable capacity of pump to control the speed of travel of vehicle in vehicle to run, the realization stepless change; Change the direction of travel of vehicle by regulated variable capacity of pump direction; Realize the turning of vehicle by the rotating speed of regulating two HM Hydraulic Motor.This new type hydraulic transmission structures is simple, handles control flexibly, and the overload protection ability is strong, prevents cavitation erosion and reduces oil consumption, and with driving engine good matching properties is arranged, faster than mechanical drive speed of response, tractive performance is good.
Description of drawings
Fig. 1 is a kind of single pump double motor hydraulic drive system figure of the present invention.
The specific embodiment
Do further explanation below in conjunction with 1 pair of the utility model of accompanying drawing:
A kind of single pump double motor hydraulic drive system comprises controllable capacity pump 1, controllable capacity pump control mechanism 2, check valve 3, safety valve 4,5,13, flush valve 6, electromagnetic valve 7,10, by pass valve 8, hydraulic actuating cylinder 9, variable-dis-placement motor 11, filter 12,14, fuel tank 15, slippage pump 16.It is characterized in that: described controllable capacity pump 1 is received on the fuel tank 15 by filter 14, described governor valve 17 is received on the branch road of controllable capacity pump 1, described controllable capacity pump control mechanism 2 is received on the governor valve 17, described electromagnetic valve 7 is connected on the oil circuit of controllable capacity pump 1, described left variable-dis-placement motor 11 is connected on the electromagnetic valve 7, described by pass valve 8 is connected to the two ends of left variable-dis-placement motor 8, described electromagnetic valve 10 is connected to be done on the variable-dis-placement motor 11, the described hydraulic actuating cylinder 9 of doing is connected on the electromagnetic valve 10, described flush valve 6 is connected between electromagnetic valve 7 oil-feed and oil return line before, described safety valve 5 is connected to after the flush valve 6, described filter 12 is connected between safety valve 5 and the fuel tank 13, described safety valve 4 symmetries are installed between in-line and the oil return line, described safety valve 13 is connected to the intersection of symmetrical safety valve 4, and be connected with governor valve 17, described slippage pump 16 is connected on the fuel tank 15, and described check valve 3 symmetries are connected on in-line and the oil return line and are connected before safety valve 4 and with safety valve 13.
Claims (1)
1. single pump double motor hydraulic drive system, comprise controllable capacity pump (1), controllable capacity pump control mechanism (2), check valve (3), safety valve (4,5,13), flush valve (6), electromagnetic valve (7,10), by pass valve (8), hydraulic actuating cylinder (9), variable-dis-placement motor (11), filter (12,14), fuel tank (15), slippage pump (16), it is characterized in that: described controllable capacity pump (1) is received on the fuel tank (15) by filter (14), governor valve (17) is received on the branch road of controllable capacity pump (1), described controllable capacity pump control mechanism (2) is received on the governor valve (17), described electromagnetic valve (7) is connected on the oil circuit of controllable capacity pump (1), described variable-dis-placement motor (11) is connected on the electromagnetic valve (7), described by pass valve (8) is connected to the two ends of left variable-dis-placement motor (8), described electromagnetic valve (10) is connected on the variable-dis-placement motor (11), described hydraulic actuating cylinder (9) is connected on the electromagnetic valve (10), described flush valve (6) is connected between electromagnetic valve (7) oil-feed and oil return line before, described safety valve (5) is connected to flush valve (6) afterwards, described filter (12) is connected between safety valve (5) and the fuel tank (13), described safety valve (4) symmetry is installed between in-line and the oil return line, described safety valve (13) is connected to the intersection of symmetrical safety valve (4), and be connected with governor valve (17), described slippage pump (16) is connected on the fuel tank (15), and described check valve (3) symmetry is connected on in-line and the oil return line and at safety valve (4) and is connected before and with safety valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044801 CN203186097U (en) | 2013-01-28 | 2013-01-28 | Single-pump double-motor hydraulic transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044801 CN203186097U (en) | 2013-01-28 | 2013-01-28 | Single-pump double-motor hydraulic transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203186097U true CN203186097U (en) | 2013-09-11 |
Family
ID=49102981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320044801 Expired - Fee Related CN203186097U (en) | 2013-01-28 | 2013-01-28 | Single-pump double-motor hydraulic transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203186097U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818679A (en) * | 2016-03-28 | 2016-08-03 | 吉林大学 | Independent drive wheeled vehicle-based multiwheel multimodal closed-loop hydrostatic drive system |
| CN113950959A (en) * | 2021-10-15 | 2022-01-21 | 新疆新研牧神科技有限公司 | Transmission system and silage harvester |
| CN114001139A (en) * | 2021-10-27 | 2022-02-01 | 江苏大学 | Mechanical-hydraulic compound transmission device comprising single-pump multi-motor system |
| CN114655005A (en) * | 2022-04-27 | 2022-06-24 | 石河子大学 | Hydraulic pump control double-motor transmission system |
-
2013
- 2013-01-28 CN CN 201320044801 patent/CN203186097U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818679A (en) * | 2016-03-28 | 2016-08-03 | 吉林大学 | Independent drive wheeled vehicle-based multiwheel multimodal closed-loop hydrostatic drive system |
| CN113950959A (en) * | 2021-10-15 | 2022-01-21 | 新疆新研牧神科技有限公司 | Transmission system and silage harvester |
| CN114001139A (en) * | 2021-10-27 | 2022-02-01 | 江苏大学 | Mechanical-hydraulic compound transmission device comprising single-pump multi-motor system |
| CN114001139B (en) * | 2021-10-27 | 2024-04-09 | 江苏大学 | Machine-liquid compound transmission device comprising single-pump multi-motor system |
| CN114655005A (en) * | 2022-04-27 | 2022-06-24 | 石河子大学 | Hydraulic pump control double-motor transmission system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104011403B (en) | There is the closed-loop hydraulic system that power regulates | |
| CN203926217U (en) | Have stream share and pooling function without throttling hydraulic system | |
| CN203639965U (en) | Hydraulic device for traveling of bulldozer | |
| CN104554432B (en) | Engineering machine steer-by-wire system | |
| CN203962531U (en) | A kind of hydraulic system | |
| CN203868275U (en) | Hydraulic stepless speed change transmission mechanism | |
| CN104520594B (en) | There is the system without metering hydraulic of power modulation | |
| CN203926235U (en) | Have many actuators loop without throttling hydraulic system | |
| CN203186097U (en) | Single-pump double-motor hydraulic transmission system | |
| CN205136169U (en) | Hydraulic pressure traveling system by motor speed controller | |
| CN103062140B (en) | Hydraulic device on basis of confluence control mode | |
| CN104011401A (en) | Closed-loop hydraulic system having energy recovery | |
| CN102390257B (en) | High and low-speed travel driving electric-hydraulic control system of engineering machinery | |
| CN102501917A (en) | Electrically-controlled hydraulically-driven steering device for mobile platform of agricultural robot | |
| CN203892295U (en) | Meterless hydraulic system having flow sharing and combining functions | |
| CN103213494B (en) | The double speed walking electrohydraulic control system of self-walking machinery | |
| CN104791311B (en) | A kind of engineering truck hydraulic moving control system | |
| CN205478612U (en) | Engineering machine tool hydraulic braking system | |
| CN207582539U (en) | A kind of hydrostatic bull-dozer enclosed winch hydraulic system | |
| CN203962530U (en) | Have share and combination function without throttling hydraulic system | |
| CN205331086U (en) | All -hydraulic amphibious tank hydraulic drive control system that travels | |
| CN201922928U (en) | Hydraulic running differential device of snow thrower | |
| CN203199027U (en) | Hydraulic transmission system of full-hydraulic drive crawler-type tractor | |
| CN106979182A (en) | A kind of control valve group and control system of the crawler body of fluid motor-driven walking | |
| CN202879244U (en) | Closed type hydraulic system for controlling running of vehicle, as well as vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20140128 |