CN205383139U - Electricity liquid pump control cylinder with differential effect device - Google Patents

Electricity liquid pump control cylinder with differential effect device Download PDF

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Publication number
CN205383139U
CN205383139U CN201620183371.2U CN201620183371U CN205383139U CN 205383139 U CN205383139 U CN 205383139U CN 201620183371 U CN201620183371 U CN 201620183371U CN 205383139 U CN205383139 U CN 205383139U
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CN
China
Prior art keywords
cylinder
differential
tube bank
differential effect
valve
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Expired - Fee Related
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CN201620183371.2U
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Chinese (zh)
Inventor
王欣
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Tianjin Sunmoon Pump Manufacture Co., Ltd.
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王欣
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Priority to CN201620183371.2U priority Critical patent/CN205383139U/en
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Publication of CN205383139U publication Critical patent/CN205383139U/en
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Abstract

The utility model discloses an electricity liquid pump control cylinder with differential effect device, its constitution includes: a computer control system, etc, computer control system connect in a set of pressure sensor, displacement sensor, encoder, signal input device respectively, the encoder is connected with the motor, the motor is connected with differential constant delivery pump, differential constant delivery pump is connected with the pressurized reservoir through the tube bank, differential constant delivery pump is connected with the cylinder with differential effect left end through tube bank A, differential constant delivery pump pass through to be restrained B and is connected with the cylinder with differential effect right -hand member, the interior push rod of cylinder with differential effect is connected with the load. This novel electricity liquid pump control cylinder with differential effect device adopts two -position three way magenetic exchange valve developments compensation control to add the closed pump control cylinder with differential effect device that oil was mended to ordinary check valve, can the messenger system be effectively controlled to device oil circuit and control structure are fairly simple, adopt the novel electricity liquid pump control cylinder with differential effect device of newly fit class of principle, can realize the motion symmetry control of cylinder with differential effect, and can realize the heat oil exchange of closed pump control system automatically.

Description

A kind of electro-hydraulic pump control cylinder with differential effect device
Technical field
This utility model relates to electronic hydrostatic technical field, is specially a kind of Novel electric liquid pump control cylinder with differential effect device.
Background technology
Phase late 1970s, appearance along with high-power rare earth permanent magnet servomotor technology, development opportunity is brought to electronic hydrostatic technological incorporation, owing to energy-saving effect is notable and plurality of advantages, become the focus of various countries' research already, cylinder with differential effect has that High power output, the efficiency of monolateral slipper seal and reliability are high, it is little to take up room, manufacture simple, low cost and other advantages, so becoming the linear hydraulic executor being most widely used.But a pair overflow valve 6 cylinder with differential effect has difference due to two chamber effective areas, causing import and export hydraulic fluid flow rate asymmetric, this contradicts with existing hydraulic pump I/O traffic symmetry, brings problem to direct pump control cylinder with differential effect, the phenomenon such as superpressure, cavitation erosion occurs.In order to suppress the generation of this phenomenon, balanced differential cylinder flow asymmetric, improves system control performance, has scholar to propose double pump and control cylinder with differential effect loop and adopt fluid-control one-way valve compensation control program in pump control loop.The former adds system cost undoubtedly, and the latter controls to make system oil-way complicate owing to have employed fluid-control one-way valve compensation, moreover the impact by load change, difficulty is brought to its type selecting, otherwise may make to be in during its work not open or always on state always, cause system circuit can not pressure release in time or oil pressure on the low side.
Utility model content
The purpose of this utility model is in that to provide a kind of Novel electric liquid pump control cylinder with differential effect device, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of electro-hydraulic pump control cylinder with differential effect device, including controller, a pair pressure transducer, displacement transducer, encoder, tube bank A, tube bank B, pressurized reservoir, cylinder with differential effect, a pair overflow valve, load, platform, check valve, two position, three-way electromagnetic change valve, differential constant flow pump, motor, signal input apparatus;Signal input apparatus connects controller input, and controller output end connects encoder, and encoder connects motor, motor connects and drives differential constant flow pump;Differential constant flow pump wherein one end is connected with pressurized reservoir by restraining, and the left end of differential constant flow pump is connected with cylinder with differential effect left end by restraining A, and the right-hand member of differential constant flow pump is connected with cylinder with differential effect right-hand member by restraining B;Two position, three-way electromagnetic change valve between tube bank A and tube bank B, two position, three-way electromagnetic change valve wherein one lead to siphunculus bundle A, another leads to siphunculus bundle B;A pair overflow valve also is located between tube bank A and tube bank B, and the top of two position, three-way electromagnetic change valve connects a pair overflow valve respectively by restraining, and is directly connected to tube bank A by one of them overflow valve, and another is directly connected to tube bank B;A pair overflow valve each corresponding check valve, and check valve is connected with tube bank A and tube bank B respectively;The push rod of described cylinder with differential effect outfan is connected with load;Load activity is arranged on platform, and described load detects displacement by displacement transducer, and displacement transducer is connected with controller;Tube bank A and tube bank B connects controller respectively through each self-corresponding pressure transducer.
As preferably, pressurized reservoir connects a pair overflow valve respectively.
Compared with prior art, the beneficial effects of the utility model are: this Novel electric liquid pump control cylinder with differential effect device adopts two position, three-way electromagnetic change valve dynamic compesated control to add the closed model pump control cylinder with differential effect device of common check valve repairing, system can be made to be effectively controlled, and device oil circuit and control structure are fairly simple, adopt the Novel electric liquid pump control cylinder with differential effect device of new flow principle, the movement symmetry that can realize cylinder with differential effect controls, and can be automatically obtained the exchange of closed model pump control system deep fat.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1, pressure transducer, 2, encoder, 3, tube bank A, 4, pressurized reservoir, 5, cylinder with differential effect, 6, overflow valve, 7, load, 8, platform, 9, tube bank B, 10, check valve, 11, displacement transducer, 12, two position, three-way electromagnetic change valve, 13, differential constant flow pump, 14, motor, 15, signal input apparatus, 16, computer control system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1 one Novel electric liquid pump control cylinder with differential effect device, a kind of electro-hydraulic pump control cylinder with differential effect device, including controller 16, a pair pressure transducer 1, displacement transducer 11, encoder 2, tube bank A3, tube bank B9, pressurized reservoir 4, cylinder with differential effect 5, a pair overflow valve 6, load 7, platform 8, check valve 10, two position, three-way electromagnetic change valve 12, differential constant flow pump 13, motor 14, signal input apparatus 15.Signal input apparatus 15 connects controller 16 input, and controller 16 outfan connects encoder 2, and encoder 2 connects motor 14, motor 14 connects and drives differential constant flow pump 13.
Differential constant flow pump 13 1 has three links, and wherein one end is connected with pressurized reservoir 4 by restraining, and the left end of differential constant flow pump 13 is connected with cylinder with differential effect 5 left end by restraining A3, and the right-hand member of differential constant flow pump 13 is connected with cylinder with differential effect 5 right-hand member by restraining B9.Above-mentioned a pair overflow valve 6, two position, three-way electromagnetic change valve 12 and check valve are respectively positioned between tube bank A3 and tube bank B9, two position, three-way electromagnetic change valve 12 wherein one lead to siphunculus bundle A3, another leads to siphunculus bundle B9.A pair overflow valve 6 is first connected, then two ends are connected in parallel on tube bank A3 with on tube bank B9, and namely one of them overflow valve 6 is directly connected to tube bank A3, and another is directly connected to tube bank B9.The top of two position, three-way electromagnetic change valve 12 is by restraining the series pipe between a pair overflow valve 6 of connection, and namely the top of two position, three-way electromagnetic change valve 12 connects a pair overflow valve 6 respectively.A pair overflow valve 6 each corresponding check valve 10, and check valve 10 is connected with tube bank A3 and tube bank B9 respectively.The push rod of above-mentioned cylinder with differential effect 5 outfan is connected with load 7;Load 7 is movably arranged on platform 8, can move left and right along push rod length direction.Load 7 detects displacement by displacement transducer 11, and displacement transducer 11 connects and composes again control loop with controller 16 signal.It addition, tube bank A3 and tube bank B9 connects controller 16 respectively through each self-corresponding pressure transducer 1.
Operation principle: due to the impact of the compressibility of system liquid force feed and load 7, the response speed and the cylinder with differential effect 5 that cause pump are inconsistent, cause in the dynamic 5 state processes of cylinder with differential effect, load 7 cavity pressure is higher, the two position, three-way electromagnetic change valve 12 being provided with little latus rectum for this carries out auxiliary compensation control, and its control principle is to control two position, three-way electromagnetic change valve 12 by detection displacement deviation voltage.When piston rod stretches out, offset deviation voltage be on the occasion of, the energising of right position electric magnet can be made, the right bar chamber of cylinder with differential effect 5 and pressurized reservoir 4 are connected, until offset deviation voltage is zero, and the electric magnet power-off of right position, spring centering makes spool return to middle position, and 5 liang of cavity pressures of cylinder with differential effect remain stable for;When pusher retracted, offset deviation voltage is negative value, can make the electric magnet energising of left position, cylinder with differential effect 5 rodless cavity and pressurized reservoir 4 are connected, until offset deviation voltage is zero, and the electric magnet power-off of left position, spring centering makes spool return to middle position, and cylinder with differential effect two cavity pressure remains stable for.So, can effectively reduce system dynamic course back pressure, it is prevented that load 7 chamber superpressure phenomenon occurs, improve system reliability.
Above-mentioned pressurized reservoir 4 connects a pair overflow valve 6 respectively, is specifically connected on the pipeline between two position, three-way electromagnetic change valve 12 and a pair overflow valve 6.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, being appreciated that when without departing from principle of the present utility model and spirit and these embodiments can be carried out multiple change, amendment, replacement and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims (2)

1. an electro-hydraulic pump control cylinder with differential effect device, it is characterised in that: include controller (16), a pair pressure transducer (1), displacement transducer (11), encoder (2), tube bank A (3), tube bank B (9), pressurized reservoir (4), cylinder with differential effect (5), a pair overflow valve (6), load (7), platform (8), check valve (10), two position, three-way electromagnetic change valve (12), differential constant flow pump (13), motor (14), signal input apparatus (15);Signal input apparatus (15) connects controller (16) input, controller (16) outfan connects encoder (2), and encoder (2) connects motor (14), motor (14) connects and drives differential constant flow pump (13);Differential constant flow pump (13) wherein one end is connected with pressurized reservoir (4) by restraining, the left end of differential constant flow pump (13) is connected with cylinder with differential effect (5) left end by restraining A (3), and the right-hand member of differential constant flow pump (13) is connected with cylinder with differential effect (5) right-hand member by restraining B (9);Two position, three-way electromagnetic change valve (12) is positioned between tube bank A (3) and tube bank B (9), two position, three-way electromagnetic change valve (12) wherein one lead to siphunculus bundle A (3), another leads to siphunculus bundle B (9);A pair overflow valve (6) also is located between tube bank A (3) and tube bank B (9), the top of two position, three-way electromagnetic change valve (12) connects a pair overflow valve (6) respectively by restraining, and it being directly connected to tube bank A (3) by one of them overflow valve (6), another is directly connected to tube bank B (9);A pair overflow valve (6) each corresponding check valve (10), and check valve (10) is connected with tube bank A (3) and tube bank B (9) respectively;The push rod of described cylinder with differential effect (5) outfan is connected with load (7);Load (7) is movably arranged on platform (8), and described load (7) detects displacement by displacement transducer (11), and displacement transducer (11) is connected with controller (16);Tube bank A (3) and tube bank B (9) connect controller (16) respectively through each self-corresponding pressure transducer (1).
2. electro-hydraulic pump control cylinder with differential effect device according to claim 1, it is characterised in that: pressurized reservoir (4) connects a pair overflow valve (6) respectively.
CN201620183371.2U 2016-03-10 2016-03-10 Electricity liquid pump control cylinder with differential effect device Expired - Fee Related CN205383139U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620183371.2U CN205383139U (en) 2016-03-10 2016-03-10 Electricity liquid pump control cylinder with differential effect device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620183371.2U CN205383139U (en) 2016-03-10 2016-03-10 Electricity liquid pump control cylinder with differential effect device

Publications (1)

Publication Number Publication Date
CN205383139U true CN205383139U (en) 2016-07-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545883A (en) * 2016-03-10 2016-05-04 王欣 Electric hydraulic pump control differential cylinder device
CN108115684A (en) * 2017-12-01 2018-06-05 国机智能技术研究院有限公司 A kind of method and system for eliminating mechanical arm shake
CN109958664A (en) * 2017-12-25 2019-07-02 北京金风科创风电设备有限公司 Electrohydraulic control system, method and device
CN111120438A (en) * 2019-12-31 2020-05-08 南京埃斯顿自动化股份有限公司 Synchronous control method for unbalance load resistance of servo pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545883A (en) * 2016-03-10 2016-05-04 王欣 Electric hydraulic pump control differential cylinder device
CN108115684A (en) * 2017-12-01 2018-06-05 国机智能技术研究院有限公司 A kind of method and system for eliminating mechanical arm shake
CN109958664A (en) * 2017-12-25 2019-07-02 北京金风科创风电设备有限公司 Electrohydraulic control system, method and device
CN109958664B (en) * 2017-12-25 2020-05-12 北京金风科创风电设备有限公司 Electro-hydraulic control system, method and device
CN111120438A (en) * 2019-12-31 2020-05-08 南京埃斯顿自动化股份有限公司 Synchronous control method for unbalance load resistance of servo pump

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Hou Zhendong

Inventor before: Wang Xin

CB03 Change of inventor or designer information
TR01 Transfer of patent right

Effective date of registration: 20170522

Address after: Chen Zui Town Road 301741 Tianjin city Wuqing District Xingfa No. 3

Patentee after: Tianjin Sunmoon Pump Manufacture Co., Ltd.

Address before: Wencheng County of Wenzhou City, Zhejiang province 325300 rocky mountain village 29 No. 11 overseas Chinese town

Patentee before: Wang Xin

TR01 Transfer of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160713

Termination date: 20180310

CF01 Termination of patent right due to non-payment of annual fee