CN202833370U - Control device of double motors through double-variable displacement piston pump - Google Patents

Control device of double motors through double-variable displacement piston pump Download PDF

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Publication number
CN202833370U
CN202833370U CN 201220523644 CN201220523644U CN202833370U CN 202833370 U CN202833370 U CN 202833370U CN 201220523644 CN201220523644 CN 201220523644 CN 201220523644 U CN201220523644 U CN 201220523644U CN 202833370 U CN202833370 U CN 202833370U
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China
Prior art keywords
valve
piston pump
motor
oil
hydraulic
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Expired - Fee Related
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CN 201220523644
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Chinese (zh)
Inventor
刘永诚
吕亮
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Yantai Jereh Petroleum Equipment and Technologies Co Ltd
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Yantai Jereh Petroleum Equipment and Technologies Co Ltd
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Priority to CN 201220523644 priority Critical patent/CN202833370U/en
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Abstract

The utility model relates to a control device of double motors through a double- variable displacement piston pump. The control device of the double motors through the double- variable displacement piston pump is characterized by comprising a oil-sucking-filtering device(1), a control valve(2), a hydraulic shuttle valve(3), a pressure gage(4), a double- way variable displacement axial piston pump(5), a mechanically-actuated reversing valve(6), a gear motor(7), a first check valve(8), a piston motor(9), a hydraulic oil cooler(10), a return oil filter(11), a hydraulic oil tank(12) and a second check valve(13). A chassis drives the variable displacement piston pump to work, which provides power for the whole hydraulic system. Through shift between an oil inlet and an oil outlet of double- way variable displacement axial piston pump, direction switch of the oil conducted by the mechanically-actuated reversing valve, and one- way flow function of the check valve, the hydraulic system controls two- way rotation of the gear motor and one- way rotation of the piston motor, which greatly increases profits of the device and competitiveness space.

Description

A kind of bivariate plunger pump control double motor device
Technical field
The utility model relates to the hydraulic system technical field of oil field construction equipment, is a kind of bivariate plunger pump control double motor device specifically, relates in particular to the HYDRAULIC CONTROL SYSTEM of deep fat car.
Background technique
In the hydraulic system of the productions such as chemical industry, agricultural, boats and ships, mine, drilling at the sea and walking arrangement, often need two motor independent operation, and according to two effects that motor is different, the rotation direction of motor has also been proposed strict requirement.Conventional method is to adopt two pumps to drive respectively two motors, but when different to two running and one need bidirectional rotary then another can only single direction rotation motor adopt the separately-driven mode cost of two pumps higher, and complex operation.If require the motor of single direction rotation to reverse, can bring adverse effect to construction quality.The problem that exists is:
1. hydraulic system high cost adopts two to overlap independently that hydraulic system drives oil hydraulic motor, has increased the high prices such as plunger pump and control valve, expensive hydraulic element drop into, and have reduced profit margin and competitive ability;
2. can't avoid misoperation, misoperation owing to reasons such as neglecting, forget, another motor is in halted state in the time of can't guaranteeing a motor operations, the motor of single direction rotation can not reverse, and operator are difficult for discovering the generation of misoperation, and success rate and the reliability of operation caused potential safety hazard.
Summary of the invention
The purpose of this utility model is the defective that overcomes prior art, and a kind of bivariate plunger pump control double motor device is provided, and the cost that mainly solves existing control technique is high, the problems such as misoperation, poor stability easily occur.
The technical solution of the utility model is: a kind of bivariate plunger pump control double motor device, and its special way is: be comprised of oil-suction oil filter, control valve, hydraulic pressure shuttle valve, pressure gauge, bidirectional variable axial piston pump, servomotor driven change valve, gear motor, one-way valve, piston motor, hydraulic oil cooler, return oil filter, hydraulic oil container and the second one-way valve; The S mouth of described bidirectional variable axial piston pump is connected with the P mouth of servomotor driven change valve, A, B mouth through servomotor driven change valve are connected with gear motor and piston motor respectively, and are connected to respectively the P mouth of bidirectional variable axial piston pump by gear motor and piston motor and the first one-way valve, the second one-way valve; The built-in slippage pump import of bidirectional variable axial piston pump is connected with oil-suction oil filter, and oil-suction oil filter is connected with hydraulic oil container; Two pressure tap of bidirectional variable axial piston pump are connected in two imports of hydraulic pressure shuttle valve, hydraulic pressure shuttle valve outlet Bonding pressure table; The control mouth of the axial axial piston pump of bidirectional variable is connected with the working hole of control valve respectively, the slippage pump outlet of bidirectional variable axial piston pump is connected with the import of control valve, the housing drain tap of bidirectional variable axial piston pump, gear motor, piston motor and the return opening of control valve are connected with the import of hydraulic oil cooler, and the outlet of hydraulic oil cooler is connected with hydraulic oil container by return oil filter.
A kind of bivariate plunger pump control double motor device of the present utility model, chassis vehicle drives the variable piston pump work, fluid in the hydraulic oil container exports the slippage pump inlet port of entering variable plunger pump by oil-suction oil filter under the inner slippage pump effect of bidirectional variable axial piston pump, the slippage pump infusion of bidirectional variable axial piston pump enters the closed system low voltage side, realizes repairing.
Compared with the prior art a kind of bivariate plunger pump control double motor device described in the utility model has following good effect: 1) reduced cost, greatly promoted profit and the competitive ability space of equipment; 2) adopt a two-way variable displacement plunger pump to realize two motors are fully controlled, and the adverse effect of avoiding misoperation that construction operation is produced fully; By the control of servomotor driven change valve and control valve, realized motion when different to two motors, and a motor two-direction rotation, the purpose of another motor single direction rotation, and effectively prevented the motor counter-rotating of single direction rotation by one-way valve.The situation that does not exist two motors to move simultaneously; 3) original two pressure tap are respectively filled a manometric mode and be replaced by two pressure tap and be connected with two imports of shuttle valve respectively, share a pressure gauge; The effect of shuttle valve is only to allow the fluid that pressure is higher in the two-way fluid to be communicated with pressure gauge; When system works, force value shown in the pressure gauge is the working pressure of the motor of current running.Make like this operation panel more succinct, observed reading is convenient.
Description of drawings:
Fig. 1 is pipeline component connection diagram of the present utility model;
The drawing explanation:
1, oil-suction oil filter; 2, control valve; 3, hydraulic pressure shuttle valve; 4, pressure gauge; 5, bidirectional variable axial piston pump; 6, servomotor driven change valve; 7, gear motor; 8, the first one-way valve; 9, piston motor; 10, hydraulic oil cooler; 11, return oil filter; 12, hydraulic oil container; 13, the second one-way valve.
Embodiment:
Be described of the present utility model below in conjunction with accompanying drawing, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
Embodiment 1, referring to Fig. 1, the S mouth of bidirectional variable axial piston pump 5 is connected with the P mouth of servomotor driven change valve 6, A, B mouth through servomotor driven change valve 6 are connected with gear motor 7 and piston motor 9 respectively, and are connected to respectively the P mouth of bidirectional variable axial piston pump 5 by gear motor 7 and piston motor 9 and the first one-way valve 8, the second one-way valve 13; The built-in slippage pump import of bidirectional variable axial piston pump 5 is connected with oil-suction oil filter 1, and oil-suction oil filter 1 is connected with hydraulic oil container 12; The pressure tap of bidirectional variable axial piston pump 5 is connected in two imports of hydraulic pressure shuttle valve 3 hydraulic pressure shuttle valve 3 outlet Bonding pressure tables 4; Again bidirectional variable axial piston pump 5 control mouths are connected with the working hole of control valve 2 respectively, the outlet of bidirectional variable axial piston pump 5 slippage pumps is connected with the import of control valve 2; The housing drain tap of bidirectional variable axial piston pump 5, gear motor 7, piston motor 9 and the return opening of control valve 2 are connected with the import of hydraulic oil cooler 10 respectively, and the outlet of hydraulic oil cooler 10 is connected with hydraulic oil container 12 by return oil filter 11; The function of each parts is as follows:
Bidirectional variable axial piston pump 5 is used for mechanical energy is converted to hydraulic energy, hydraulic oil is become high pressure by low pressure, be the dynamical element of whole hydraulic system, can change by the inclination of inner swash plate the outbound course of fluid, P mouth, S mouth all can be used as the high pressure hydraulic fluid port and carry out work;
Servomotor driven change valve 6 is used for the commutation of control high pressure oil as one of control unit of system, realizes that fluid enters different motors;
Gear motor 7 and piston motor 9 are used for hydraulic energy is converted to mechanical energy, to outside mechanical mechanism acting, are the executive components of hydraulic system; According to the requirement of mechanical mechanism, gear motor 7 can be realized bidirectional rotation, and piston motor 9 can only single direction rotation, and necessarily can not reverse;
Control valve 2 is used for the fluid flow output size of control bidirectional variable axial piston pump 5, and the commutation by control valve 2 can realize the change to bidirectional variable axial piston pump 5 high pressure hydraulic fluid ports;
Hydraulic pressure shuttle valve 3 is used for showing the pressure of high pressure hydraulic fluid port, and by comparing the pressure of two imports, higher pressure can enter pressure gauge by outlet, thereby shows the motor pressure of work at present; Pressure in the time of can realizing showing that two motor differences turn to by a pressure gauge.
A kind of bivariate plunger pump control double motor device of the present utility model, its working principle is:
1, when system's normal operation, by the control valve commutation, control oil tilts the swash plate of bidirectional variable axial piston pump, and oil hydraulic pump has flow to export.When the P mouth is pressure hydraulic fluid port and servomotor driven change valve when being in position a, because the T mouth is shut, fluid can't drive its rotation through gear motor; And piston motor has stoped fluid drive plunger motor because import has the existence of the second one-way valve, but is back to the S mouth of two-way variable displacement plunger pump through the first one-way valve and servomotor driven change valve P mouth, forms the loop.The effect of the second one-way valve is to prevent the piston motor backward rotation, and the effect of the first one-way valve is that system pressure rises rapidly because fluid can't circulate when preventing this state, piston motor has been played the effect of protection.Therefore, under this state, gear motor and piston motor all do not turn round.
2, when system's normal operation, by the control valve commutation, the swash plate of bidirectional variable axial piston pump is tilted, oil hydraulic pump has flow output.When the S mouth is pressure hydraulic fluid port and servomotor driven change valve when being in position a, because servomotor driven change valve T mouth links to each other with the A mouth, pass through gear motor without fluid and drive its rotation; And pressure oil process servomotor driven change valve P mouth is to the B mouth, during through the first one-way valve, fluid is obstructed and can't passes through, and fluid can only flow back into by piston motor, the second one-way valve the P mouth of bidirectional variable axial piston pump, guarantee working pressure and the flow of piston motor, and driven its forward rotation.Therefore, under this state, gear motor can't turn round, the running of piston motor forward.
3, when system's normal operation, by the control valve commutation, the swash plate of bidirectional variable axial piston pump is tilted, oil hydraulic pump has flow output.When the P mouth is pressure hydraulic fluid port and servomotor driven change valve when being in position b, because servomotor driven change valve T mouth is shut, the piston motor front is equipped with the second one-way valve, the fluid piston motor of can't flowing through; Thereby fluid flows back into bidirectional variable axial piston pump S mouth driven gear motor running through the A of gear motor and servomotor driven change valve mouth, P mouth, and therefore, piston motor does not turn round, the gear motor antiport.
4, when system's normal operation, by the control valve commutation, the swash plate of bidirectional variable axial piston pump is tilted, oil hydraulic pump has flow output.When the S mouth is the pressure hydraulic fluid port, and servomotor driven change valve is when being in position b, because servomotor driven change valve T mouth is shut, the piston motor front is equipped with the second one-way valve, without the fluid piston motor of flowing through; Fluid flows back into the P mouth of bidirectional variable axial piston pump through the P of servomotor driven change valve mouth, A mouth and gear motor, thus the driven gear motor running, and therefore, piston motor does not turn round, the running of gear motor forward.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (1)

1. a bivariate plunger pump control double motor device is characterized in that: be comprised of oil-suction oil filter (1), control valve (2), hydraulic pressure shuttle valve (3), pressure gauge (4), bidirectional variable axial piston pump (5), servomotor driven change valve (6), gear motor (7), the first one-way valve (8), piston motor (9), hydraulic oil cooler (10), return oil filter (11), hydraulic oil container (12) and the second one-way valve (13); The S mouth of described bidirectional variable axial piston pump (5) is connected with the P mouth of servomotor driven change valve (6), A, B mouth through servomotor driven change valve (6) are connected with gear motor (7) and piston motor (9) respectively, and are connected to respectively the P mouth of bidirectional variable axial piston pump (5) by gear motor (7) and piston motor (9) and the first one-way valve (8), the second one-way valve (13); The built-in slippage pump import of bidirectional variable axial piston pump (5) is connected with oil-suction oil filter (1), and oil-suction oil filter (1) is connected with hydraulic oil container (12); Two pressure tap of bidirectional variable axial piston pump (5) are connected in two imports of hydraulic pressure shuttle valve (3), hydraulic pressure shuttle valve (3) outlet Bonding pressure table (4); The control mouth of the axial axial piston pump of bidirectional variable (5) is connected with the working hole of control valve (2) respectively, the slippage pump outlet of bidirectional variable axial piston pump (5) is connected with the import of control valve (2), the housing drain tap of bidirectional variable axial piston pump (5), gear motor (7), piston motor (9) and the return opening of control valve (2) are connected with the import of hydraulic oil cooler (10), and the outlet of hydraulic oil cooler (10) is connected with hydraulic oil container (12) by return oil filter (11).
CN 201220523644 2012-10-15 2012-10-15 Control device of double motors through double-variable displacement piston pump Expired - Fee Related CN202833370U (en)

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