CN201661532U - Hydraulic pumping system of concrete pump - Google Patents

Hydraulic pumping system of concrete pump Download PDF

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Publication number
CN201661532U
CN201661532U CN2010201507519U CN201020150751U CN201661532U CN 201661532 U CN201661532 U CN 201661532U CN 2010201507519 U CN2010201507519 U CN 2010201507519U CN 201020150751 U CN201020150751 U CN 201020150751U CN 201661532 U CN201661532 U CN 201661532U
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CN
China
Prior art keywords
mouth
master cylinder
port
reversing valves
way reversing
Prior art date
Application number
CN2010201507519U
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Chinese (zh)
Inventor
张敬刚
金义华
Original Assignee
北京华强京工机械制造有限公司
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Priority to CN2010201507519U priority Critical patent/CN201661532U/en
Application granted granted Critical
Publication of CN201661532U publication Critical patent/CN201661532U/en

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Abstract

The utility model discloses a hydraulic pumping system of a concrete pump, which consists of an oil box, a master oil pump, an overflowing valve, a three-position four-way steering valve, two two-position four-way steering valves and two master oil cylinders, wherein the master oil pump absorbs oil from the oil box, an outlet of the master oil pump is connected with a port P of the three-position four-way steering valve, a port A and a port B of the three-position four-way steering valve is respectively connected with ports P of the two two-position four-way steering valves, ports T of the two two-position four-way steering valves are connected with each other, a port A and a port B of the left two-position four-way steering valve are respectively connected with a rod-free cavity of the left master oil cylinder and a rod cavity of the right master oil cylinder, and a port A and a port B of the right two-position four-way steering valve are respectively connected with a rod-free cavity of the right master oil cylinder and a rod cavity of the left master oil cylinder. The hydraulic pumping system can switch the pumping status between high pressure and low pressure during pumping with the concrete pump, independently stretches the single master oil cylinder after stopping pumping, is simple in operation, greatly reduces the labor intensity of operators, and improves the work efficiency.

Description

A kind of hydraulic pressure pumping system of concrete pump

Technical field

The utility model belongs to the concrete pump technical field, specifically, has related to a kind of hydraulic pressure pumping system of concrete pump, can realize concrete pump high low pressure function of switching and single master cylinder is carried out the independent telescope operation safely and fast under the pumping state.

Technical background

At present, concrete pump is widely-used in construction industry.The groundwork principle of concrete pump is to utilize the to-and-fro motion of two master cylinders to drive the transmission and concrete transmission piston suction in the transmission and concrete transmission cylinder and release concrete.In the hydraulic pressure pumping system of concrete pump, during master cylinder rod chamber oil inlet and oil return, can realize the big discharge capacity work of low pressure of concrete pump, during master cylinder rodless cavity oil inlet and oil return, can realize the high pressure float amount work of pump on the coagulation, the use of high-low voltage switching device can realize the switching of two kinds of working staties of concrete pump, to satisfy the needs of different construction operating modes.The hydraulic pressure pumping system of existing concrete pump is having two types aspect the high low pressure handoff technique, a class is that manual high low pressure switches; Another kind of is that automatic high low pressure switches.Manually the high low pressure switching is meant: by the mode of dismounting oil pipe or dismounting high low pressure switching valve cover plate, change the interface relationship of hydraulic fluid port, thereby realize that high low pressure switches.Manually high low pressure switch have operation easier big, can loss and pollute hydraulic pressure wet goods shortcoming.Automatically the high low pressure switching is meant: by automatically controlled or sensing control mode, change the interface relationship of hydraulic fluid port, thereby realize that high low pressure switches.Automatically high low pressure switches the automaticity height, but control is complicated, and hydraulic element are more, needs complex structure, bulky valve seat, produces and adds the comparison difficulty.

Summary of the invention

The utility model has overcome deficiency of the prior art, and a kind of hydraulic pressure pumping system that can realize in concrete pump pumping process that pumping state high low pressure switches is provided, and possesses the function of single master cylinder being carried out the independent telescope operation.Characteristics with fast, simple in structure, the no fluid loss of high low pressure switch speed and environmental protection.

The technical solution of the utility model is: a kind of hydraulic pressure pumping system of concrete pump is made of fuel tank, main oil pump, relief valve, three position four-way directional control valve, two position and four-way reversing valves, master cylinder; Main oil pump is from the fuel tank oil suction, and the outlet of main oil pump connects the P mouth of three position four-way directional control valve, connects the pressure port of main relief valve simultaneously, the oil recirculating port connecting tank of main relief valve; The T mouth connected tank of three position four-way directional control valve, A mouth, B mouth connect the P mouth of two two position and four-way reversing valves respectively; The T mouth of two two position and four-way reversing valves links to each other, and connects the pressure port of auxiliary overflow valve simultaneously, the oil recirculating port connecting tank of auxiliary overflow valve; Nothing (having) the bar chamber that A mouth, the B mouth of left side two position and four-way reversing valves connects a left side (right side) side master cylinder respectively and right (left side) side master cylinder (nothings) bar chamber arranged, nothing (having) the bar chamber that the A mouth of right side two position and four-way reversing valves, B mouth connect the right side (left side) side master cylinder respectively and left (right side) side master cylinder (nothing) bar chamber arranged.

Working principle of the present utility model is as follows: fuel tank is used for stores hydraulic pressure oil, main oil pump is from the fuel tank oil suction, the main oil pump pressure port provides the hydraulic oil with certain pressure and flow, three position four-way directional control valve is used for controlling the expanding-contracting action of two master cylinders, and coupled main relief valve plays restriction system pressure and safety; Two two position and four-way reversing valve cooperatings, the oil of allotment three position four-way directional control valve A mouth, B mouth enter the rod chamber of two master cylinders or rodless cavity or only to a certain master cylinder independent oil supply; Thereby realize the function that concrete pump pumping state high low pressure switches and single master cylinder is carried out the independent telescope operation.The auxiliary overflow valve that connects two two position and four-way reversing valve T mouths is used for restricted T mouth working pressure.

Compared with prior art, the beneficial effects of the utility model are: can carry out pumping state high low pressure and switch and need not to stop pumping or shutdown in concrete pump pumping process; After stopping pumping, can carry out the independent telescope operation, be beneficial to dismounting and check piston single master cylinder.Simple to operate, greatly reduce operator's labor intensity, improved working efficiency.

Description of drawings

Fig. 1 is the utility model hydraulic pressure pumping systematic schematic diagram; 1 is fuel tank among the figure, the 2nd, and main oil pump, the 3rd, three position four-way directional control valve, the 4th, main relief valve, the 5th, left side two position and four-way reversing valves, the 6th, right side two position and four-way reversing valves, the 7th, auxiliary overflow valve, the 8th, left side master cylinder, the 9th, right side master cylinder.Shown position is the series connection of master cylinder rod chamber, rodless cavity fuel feeding, i.e. high pressure pumping state.

Fig. 2 is the schematic diagram of the utility model hydraulic pressure pumping system at the operating on low voltage state.

Fig. 3 is the utility model hydraulic pressure pumping system carries out independent telescope control to left side master cylinder 8 a schematic diagram.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

Among Fig. 1: the A mouth of three position four-way directional control valve 3 connects the P mouth of left side two position and four-way reversing valves 5, and the B mouth of three position four-way directional control valve 3 connects the P mouth of right side two position and four-way reversing valves 6; The A mouth of left side two position and four-way reversing valves 5 connects the rodless cavity of left side master cylinder 8, and the B mouth connects the rod chamber of right side master cylinder 9; The A mouth of right side two position and four-way reversing valves 6 connects the rodless cavity of right side master cylinder 9, and the B mouth connects the rod chamber of left side master cylinder 8; The T mouth of left side two position and four-way reversing valves 5 and the T mouth of right side two position and four-way reversing valves 6 link to each other.At this moment, enter the P mouth of left side two position and four-way reversing valves 5 from the hydraulic oil of main oil pump 2 through the P of three position four-way directional control valve 3 mouth, A mouth, the A mouth of two position and four-way reversing valves 5 enters the rodless cavity of left side master cylinder 8 through the left side, and the piston rod of left side master cylinder 8 is protruding; Hydraulic oil in the rod chamber of left side master cylinder 8 is at the dirty B mouth of two position and four-way reversing valves 6 to the right of the promotion of piston, the T mouth and the B mouth of the T mouth of two position and four-way reversing valves 6, left side two position and four-way reversing valves 5 through the right side, enter the rod chamber of right side master cylinder 9, form two master cylinder rod chambers and link to each other the inside indentation of the piston rod of right side master cylinder 9; Hydraulic oil in the rodless cavity of right side master cylinder 9 is got back to fuel tank at A mouth, the P mouth of dirty two position and four-way reversing valves 6 to the right of the promotion of piston through the B of three position four-way directional control valve 3 mouth, T mouth.According to said process, when the P mouth that makes three position four-way directional control valve 3 communicates with the B mouth, just can make that the piston rod of right side master cylinder 9 is protruding, simultaneously the inside indentation of piston rod of left side master cylinder 8.Rodless cavity difference oil-feed and the two main oil cylinder piston bars of realizing two master cylinders by the Interface status of conversion three position four-way directional control valve 3 alternately stretch, and realize the pumping of concrete continuous high pressure.

Among Fig. 2: left side two position and four-way reversing valves 5 and right side two position and four-way reversing valves 6 simultaneously will be separately the P mouth communicate with the B mouth, the rodless cavity of two master cylinders links to each other, rod chamber difference oil-feed and the two main oil cylinder piston bars of realizing two master cylinders by the Interface status of conversion three position four-way directional control valve 3 alternately stretch, and realize the pumping of concrete continuous low pressure.

Among Fig. 3: the P mouth of left side two position and four-way reversing valves 5 communicates with the A mouth, and the P mouth of right side two position and four-way reversing valves 6 communicates with the B mouth, right side master cylinder 9 is isolated, Interface status by conversion three position four-way directional control valve 3 is realized the rod chamber of left side master cylinder 8 or rodless cavity oil-feed, oil return, realizes the independent telescope operation to left side master cylinder 8.Same principle, if the P mouth of left side two position and four-way reversing valves 5 communicates with the B mouth, and the P mouth of right side two position and four-way reversing valves 6 communicates with the A mouth, then left side master cylinder 8 is isolated, Interface status by conversion three position four-way directional control valve 3 is realized the rod chamber of right side master cylinder 9 or rodless cavity oil-feed, oil return, realizes the independent telescope operation to right side master cylinder 9.

Claims (2)

1. the hydraulic pressure pumping system of a concrete pump, it is characterized in that, it is by being made of fuel tank, main oil pump, relief valve, three position four-way directional control valve, two position and four-way reversing valves, master cylinder, the A mouth of three position four-way directional control valve, B mouth connect the P mouth of two two position and four-way reversing valves respectively, the T mouth of two two position and four-way reversing valves links to each other, A mouth, the B mouth of left side two position and four-way reversing valves connects the rodless cavity of left side master cylinder and the rod chamber of right side master cylinder respectively, and the A mouth of right side two position and four-way reversing valves, B mouth connect the rodless cavity of right side master cylinder and the rod chamber of left side master cylinder respectively.
2. the hydraulic pressure pumping system of a kind of concrete pump according to claim 1 is characterized in that, the T mouth of two two position and four-way reversing valves links to each other, and connects the pressure port of auxiliary overflow valve simultaneously, the oil recirculating port connecting tank of auxiliary overflow valve.
CN2010201507519U 2010-04-02 2010-04-02 Hydraulic pumping system of concrete pump CN201661532U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201507519U CN201661532U (en) 2010-04-02 2010-04-02 Hydraulic pumping system of concrete pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201507519U CN201661532U (en) 2010-04-02 2010-04-02 Hydraulic pumping system of concrete pump

Publications (1)

Publication Number Publication Date
CN201661532U true CN201661532U (en) 2010-12-01

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Application Number Title Priority Date Filing Date
CN2010201507519U CN201661532U (en) 2010-04-02 2010-04-02 Hydraulic pumping system of concrete pump

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CN (1) CN201661532U (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330649A (en) * 2011-09-14 2012-01-25 徐州重型机械有限公司 Plunger water pump and liquid control system thereof
CN102423526A (en) * 2011-09-14 2012-04-25 徐州重型机械有限公司 High rise building and fixed fire fighting system thereof
CN102423521A (en) * 2011-09-14 2012-04-25 徐州重型机械有限公司 Fire extinguishing system and fire engine containing the same
CN102434510A (en) * 2011-11-23 2012-05-02 中联重科股份有限公司 Pumping equipment and high-low pressure switching system of pumping equipment, pumping system and operation method of pumping system
CN102605786A (en) * 2012-04-09 2012-07-25 山河智能装备股份有限公司 Pile pressing-in back stroke control system of static pile pressing-in machine and operation method of pile pressing-in back stroke control system
CN102840123A (en) * 2012-09-19 2012-12-26 中联重科股份有限公司 Jumping-prevention machine halt method of double-cylinder pumping system, double-cylinder pumping system and pumping equipment
CN103671315A (en) * 2013-12-05 2014-03-26 中联重科股份有限公司 Concrete pumping system and concrete pumping machine
CN106194881A (en) * 2016-09-20 2016-12-07 徐州徐工施维英机械有限公司 Directional control valve group and hydraulic system
CN106801691A (en) * 2017-04-01 2017-06-06 长沙拓沃工程机械设备有限公司 Concrete pump and its hydraulic system, control method
CN108870083A (en) * 2018-07-13 2018-11-23 广州中洲环保科技有限公司 A kind of control system for eliminating sludge plunger pump delivery line gas collection problem

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2579540C2 (en) * 2011-09-14 2016-04-10 Сюйчжоу Хэви Мачинери Ко., Лтд. Water plunger pump and its fluid control system
CN102423526A (en) * 2011-09-14 2012-04-25 徐州重型机械有限公司 High rise building and fixed fire fighting system thereof
CN102423521A (en) * 2011-09-14 2012-04-25 徐州重型机械有限公司 Fire extinguishing system and fire engine containing the same
WO2013037198A1 (en) * 2011-09-14 2013-03-21 徐州重型机械有限公司 Water plunger pump and hydraulic control system thereof
CN102423526B (en) * 2011-09-14 2013-11-13 徐州重型机械有限公司 High rise building and fixed fire fighting system thereof
CN102330649A (en) * 2011-09-14 2012-01-25 徐州重型机械有限公司 Plunger water pump and liquid control system thereof
CN102434510A (en) * 2011-11-23 2012-05-02 中联重科股份有限公司 Pumping equipment and high-low pressure switching system of pumping equipment, pumping system and operation method of pumping system
CN102434510B (en) * 2011-11-23 2015-03-18 中联重科股份有限公司 Pumping equipment and high-low pressure switching system of pumping equipment, pumping system and operation method of pumping system
CN102605786A (en) * 2012-04-09 2012-07-25 山河智能装备股份有限公司 Pile pressing-in back stroke control system of static pile pressing-in machine and operation method of pile pressing-in back stroke control system
CN102840123A (en) * 2012-09-19 2012-12-26 中联重科股份有限公司 Jumping-prevention machine halt method of double-cylinder pumping system, double-cylinder pumping system and pumping equipment
CN102840123B (en) * 2012-09-19 2015-09-30 中联重科股份有限公司 Twin-tub pumping system Anti-moving closing method, twin-tub pumping system and pumping equipment
CN103671315A (en) * 2013-12-05 2014-03-26 中联重科股份有限公司 Concrete pumping system and concrete pumping machine
CN106194881A (en) * 2016-09-20 2016-12-07 徐州徐工施维英机械有限公司 Directional control valve group and hydraulic system
CN106801691A (en) * 2017-04-01 2017-06-06 长沙拓沃工程机械设备有限公司 Concrete pump and its hydraulic system, control method
CN106801691B (en) * 2017-04-01 2018-04-17 湖南拓沃重工科技有限公司 Concrete pump and its hydraulic system, control method
CN108870083A (en) * 2018-07-13 2018-11-23 广州中洲环保科技有限公司 A kind of control system for eliminating sludge plunger pump delivery line gas collection problem
CN108870083B (en) * 2018-07-13 2020-02-14 广州中洲环保科技有限公司 Control system for eliminating gas collection problem of sludge plunger pump conveying pipeline

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Granted publication date: 20101201

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Addressee: BEIJING HQJG MACHINERY PRODUCING Co.,Ltd.

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