CN208634508U - A kind of main top hydraulic system of jacking construction - Google Patents

A kind of main top hydraulic system of jacking construction Download PDF

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Publication number
CN208634508U
CN208634508U CN201821272658.8U CN201821272658U CN208634508U CN 208634508 U CN208634508 U CN 208634508U CN 201821272658 U CN201821272658 U CN 201821272658U CN 208634508 U CN208634508 U CN 208634508U
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China
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hydraulic
valve
extraction assembly
oil
fuel tank
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CN201821272658.8U
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王晓
王保
唐素文
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Anhui Tangxing Machinery Equipment Co Ltd
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Anhui Tangxing Machinery Equipment Co Ltd
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Abstract

The utility model discloses a kind of main top hydraulic systems of jacking construction, including fuel tank, liquidometer, liquid thermometer, air cleaner, electromagnetic relief valve, pilot operated compound relief valve, pressure gauge, 3-position 4-way electro-hydraulic reversing valve, hydraulic control one-way valve, shut-off valve, hydraulic cylinder, the first extraction assembly, the second extraction assembly;The fuel tank side is equipped with the first extraction assembly and the second extraction assembly;First extraction assembly includes self-sealing oil absorption filter a, unidirectional volume adjustable hydraulic pump a, shaft coupling a, motor a and check valve a;The utility model increases flow system flow and accelerates cylinder movement speed, improves working efficiency;Operating pressure can be formed by being conducive to system;Guarantee in hydraulic cylinder extending action, oil return line will not generate back pressure because of big flow, oil circuit blocking, improve security of system;It is able to ascend hydraulic cylinder and withdraws speed, reduce more than half because waiting hydraulic cylinder to withdraw the wasted working time, greatly improve construction efficiency.

Description

A kind of main top hydraulic system of jacking construction
Technical field
The utility model relates to field of hydraulic equipment, specially a kind of main top hydraulic system of jacking construction.
Background technique
In jacking construction, main top hydraulic system is very important component part, it is push-bench and entire pipeline Forward motion provides pushing tow power.Currently, the main top hydraulic system of jacking construction is mainly by hydraulic pump, reversal valve, hydraulic cylinder Composition, carrying out guiding to the hydraulic oil that hydraulic pump is discharged by reversal valve makes hydraulic cylinder stretch out or withdraw.
During jacking construction, since the soil body is to the resistance of push-bench and pipeline, cause the load of hydraulic cylinder continuous Frequently variation causes hydraulic system pressure fluctuation big and easily forms back pressure, seriously affected the safety of hydraulic system.In order to protect Hydraulic pump off-load is demonstrate,proved, the Median Function of electro-hydraulic reversing valve selects M type, by being limited by electrohydraulic change valve structure principle, in M type The case where position, which is easy to cause, reversal valve is occurred and can not commutate, and main top hydraulic system is not available, has seriously affected hydraulic system Stable type.
During jacking construction, when push-bench jacking, needs the hydraulic cylinder of main top hydraulic system slowly to stretch out, and is constructing When preparing installation pipe of cement, then the hydraulic cylinder of main top hydraulic system is needed quickly to withdraw, to concede the mounting distance of pipe of cement; But since hydraulic cylinder rod chamber volume is less than rodless cavity volume, so oil return line is easy to produce back pressure when hydraulic cylinder is withdrawn Excessively high phenomenon greatly reduces the stability and safety of main top hydraulic system, and oil cylinder withdrawal speed slowly reduces construction Working efficiency;In view of the above-mentioned problems, so it is necessary that we, which design a kind of main top hydraulic system of jacking construction,.
Utility model content
The purpose of this utility model is to provide a kind of main top hydraulic systems of jacking construction, and it is dynamic to increase flow system flow quickening cylinder Make speed, improves working efficiency;Operating pressure can be formed by being conducive to system;Guarantee in hydraulic cylinder extending action, oil return line Back pressure will not be generated because of big flow, oil circuit blocking, improve security of system;It is able to ascend hydraulic cylinder and withdraws speed, subtract More than half few working time wasted because of waiting hydraulic cylinder withdrawal, greatly improve construction efficiency.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of main top hydraulic system of jacking construction, including fuel tank, liquidometer, liquid thermometer, air cleaner, electromagnetism overflow Valve, pilot operated compound relief valve, pressure gauge, 3-position 4-way electro-hydraulic reversing valve, hydraulic control one-way valve, shut-off valve, hydraulic cylinder, first extract Component, the second extraction assembly;The side of fuel tank is separately installed with the first extraction assembly and the second extraction assembly, and the first extraction group Part and the setting parallel with one another of the second extraction assembly;
The liquidometer, liquid thermometer, air cleaner are installed on fuel tank;
First extraction assembly include self-sealing oil absorption filter a, unidirectional volume adjustable hydraulic pump a, shaft coupling a, motor a and Check valve a, the self-sealing oil absorption filter a are mounted on the side of fuel tank, and the oil outlet and list of self-sealing oil absorption filter a It is connected to the oil inlet of volume adjustable hydraulic pump a by oil pipe, the input shaft of the unidirectional volume adjustable hydraulic pump a passes through shaft coupling a and electricity The output axis connection of machine a, the check valve a are connect by screwed pipe joint with the oil outlet of unidirectional volume adjustable hydraulic pump a;
Second extraction assembly include self-sealing oil absorption filter b, unidirectional volume adjustable hydraulic pump b, shaft coupling b, motor b and Check valve b, the self-sealing oil absorption filter b are mounted on the side of fuel tank, and the oil outlet and list of self-sealing oil absorption filter b It is connected to the oil inlet of volume adjustable hydraulic pump b by oil pipe, the input shaft of the unidirectional volume adjustable hydraulic pump b passes through shaft coupling b and electricity The output axis connection of machine b, the check valve b are connect by screwed pipe joint with the oil outlet of unidirectional volume adjustable hydraulic pump b;
The P mouth of the 3-position 4-way electro-hydraulic reversing valve connect and communicates with check valve a, electromagnetic relief valve and check valve b respectively, The 3-position 4-way electro-hydraulic reversing valve and electromagnetic relief valve are in parallel relationship, and the T mouth and fuel tank of 3-position 4-way electro-hydraulic reversing valve Connection, the hydraulic cylinder be provided with it is multiple, and between hydraulic cylinder be in parallel relationship, the oil inlet of the hydraulic control one-way valve with Hydraulic cylinder rodless cavity oil circuit connection, and the control mouth of hydraulic control one-way valve and hydraulic cylinder rod chamber oil circuit connection, the guide The opposite ends of formula overflow valve respectively with fuel tank and hydraulic cylinder rod chamber oil circuit connection, the electromagnetic relief valve and the guide Formula overflow valve is connect with fuel tank.
As a further solution of the present invention: the Median Function of the 3-position 4-way electro-hydraulic reversing valve is O-shaped.
As a further solution of the present invention: the electromagnetic relief valve is open type.
As a further solution of the present invention: the electromagnet and the 3-position 4-way in the electromagnetic relief valve are electro-hydraulic Electromagnet in reversal valve is associated with by electrical control.
As a further solution of the present invention: the 3-position 4-way electro-hydraulic reversing valve and electromagnetic relief valve junction are pacified Equipped with pressure gauge.
As a further solution of the present invention: being equipped with shut-off valve on the hydraulic cylinder.
The utility model has the beneficial effects that
1. being conducive to the first pumping due to the setting of unidirectional volume adjustable hydraulic pump a, motor a, unidirectional volume adjustable hydraulic pump b and motor b It takes component and the second extraction assembly individually or works at the same time, increase flow system flow and accelerate cylinder movement speed, improve working efficiency;
2. the middle position technical ability of 3-position 4-way electro-hydraulic reversing valve be it is O-shaped, greatly reduce 3-position 4-way electro-hydraulic reversing valve and do not change To the case where occur;When the electromagnet of 3-position 4-way electro-hydraulic reversing valve is powered on, then the electromagnet of electromagnetic relief valve leads to simultaneously Electricity work, and whether left position electromagnet or right position electromagnet are powered 3-position 4-way electro-hydraulic reversing valve, the electricity of electromagnetic relief valve Magnet is powered simultaneously, and operating pressure can be formed by being conducive to system;
3. hydraulic cylinder rod chamber is connected with pilot operated compound relief valve, guarantee that, in hydraulic cylinder extending action, oil return line is not Security of system can be improved because big flow, oil circuit blocking generate back pressure;
4. hydraulic cylinder withdrawal acts, the hydraulic control one-way valve of hydraulic cylinder rodless cavity connection is opened, and is directly connected to fuel tank, The quick drainback passage of hydraulic cylinder is increased, hydraulic cylinder is able to ascend and withdraws speed, reduces more than half because waiting Hydraulic cylinder withdraws the wasted working time, greatly improves construction efficiency.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the utility model hydraulic schematic diagram;
In figure: 1, fuel tank;2, liquidometer;3, liquid thermometer;4, air cleaner;5, self-sealing oil absorption filter a;6, unidirectional Volume adjustable hydraulic pump a;7, check valve a;8, shaft coupling a;9, motor a;10, self-sealing oil absorption filter b;11, unidirectional variable delivery hydraulic Pump b;12, check valve b;13, shaft coupling b;14, motor b;15, electromagnetic relief valve;16, pilot operated compound relief valve;17, pressure gauge; 18,3-position 4-way electro-hydraulic reversing valve;19, hydraulic control one-way valve;20, shut-off valve;21, hydraulic cylinder;22, the first extraction assembly;23, Second extraction assembly.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with embodiment, it is clear that described Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Based on the reality in the utility model Example is applied, all other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to In the range of the utility model protection.
As shown in Figure 1, a kind of main top hydraulic system of jacking construction, including fuel tank 1, liquidometer 2, liquid thermometer 3, air-filtering Device 4, pilot operated compound relief valve 16, pressure gauge 17,3-position 4-way electro-hydraulic reversing valve 18, hydraulic control one-way valve 19, is cut electromagnetic relief valve 15 Only valve 20, hydraulic cylinder 21, the first extraction assembly 22, the second extraction assembly 23;The side of fuel tank 1 is separately installed with the first extraction Component 22 and the second extraction assembly 23, and the first extraction assembly 22 and the setting parallel with one another of the second extraction assembly 23;
Liquidometer 2, liquid thermometer 3, air cleaner 4 are installed on fuel tank 1;
First extraction assembly 22 includes self-sealing oil absorption filter a5, unidirectional volume adjustable hydraulic pump a6, check valve a7, shaft coupling A8, motor a9;Self-sealing oil absorption filter a5 is mounted on the side of fuel tank 1, and the oil outlet of self-sealing oil absorption filter a5 with The oil inlet of unidirectional volume adjustable hydraulic pump a6 is connected by oil pipe, and the input shaft of unidirectional volume adjustable hydraulic pump a6 passes through shaft coupling a8 and electricity The output axis connection of machine a9, check valve a7 are connect by screwed pipe joint with the oil outlet of unidirectional volume adjustable hydraulic pump a6;
Second extraction assembly 23 includes self-sealing oil absorption filter b10, unidirectional volume adjustable hydraulic pump b11, check valve b12, connection Axis device b13, motor b14;Self-sealing oil absorption filter b10 is mounted on the side of fuel tank 1, and self-sealing oil absorption filter b10 Oil outlet is connect with the oil inlet of unidirectional volume adjustable hydraulic pump b11 by oil pipe, and the input shaft of unidirectional volume adjustable hydraulic pump b11 passes through connection The output axis connection of axis device b13 and motor b14, check valve b12 are fuel-displaced by screwed pipe joint and unidirectional volume adjustable hydraulic pump b11's Mouth connection;Be conducive to the first extraction assembly 22 and the second extraction assembly 23 so individually or work at the same time, increases flow system flow Accelerate cylinder movement speed, improves working efficiency;
The P mouth of 3-position 4-way electro-hydraulic reversing valve 18 connect and communicates with check valve a7, electromagnetic relief valve 15 and check valve b12, 3-position 4-way electro-hydraulic reversing valve 18 and electromagnetic relief valve 15 are in parallel relationship, and T mouth of 3-position 4-way electro-hydraulic reversing valve 18 with it is oily Case 1 connect, hydraulic cylinder 21 be provided with it is multiple, and between hydraulic cylinder 21 be in parallel relationship, the oil inlet of hydraulic control one-way valve 19 It with 21 rodless cavity oil circuit connection of hydraulic cylinder, is able to ascend hydraulic cylinder 21 and withdraws speed, it is hydraulic because waiting to reduce more than half Oil cylinder 21 withdraws the wasted working time, greatly improves construction efficiency, and the control mouth and hydraulic oil of hydraulic control one-way valve 19 21 rod chamber oil circuit connection of cylinder, the opposite ends of pilot operated compound relief valve 16 respectively with 21 rod chamber oil circuit of fuel tank 1 and hydraulic cylinder Connection, guarantees in 21 extending action of hydraulic cylinder, and oil return line will not generate back pressure because of big flow, oil circuit blocking, improves Security of system, electromagnetic relief valve 15 and pilot operated compound relief valve 16 are connect with fuel tank 1.
As a further solution of the present invention: the middle position technical ability of 3-position 4-way electro-hydraulic reversing valve 18 be it is O-shaped, drop significantly The case where low 3-position 4-way electro-hydraulic reversing valve 18 does not commutate.
As a further solution of the present invention: electromagnetic relief valve 15 is open type.
As a further solution of the present invention: electromagnet and 3-position 4-way electro-hydraulic reversing valve in electromagnetic relief valve 15 Electromagnet in 18 is associated with by electrical control.
As a further solution of the present invention: 3-position 4-way electro-hydraulic reversing valve 18 and 15 junction of electromagnetic relief valve are pacified Equipped with pressure gauge 17.
Shut-off valve 20 is installed on the hydraulic cylinder 21.
Working principle of the utility model is: due to unidirectional volume adjustable hydraulic pump a6, motor a9, unidirectional volume adjustable hydraulic pump b11 and The setting of motor b14 is conducive to the first extraction assembly 22 and the second extraction assembly 23 individually or works at the same time, increases system stream Amount accelerates cylinder movement speed, improves working efficiency;The middle position technical ability of 3-position 4-way electro-hydraulic reversing valve 18 be it is O-shaped, greatly reduce The case where 3-position 4-way electro-hydraulic reversing valve 18 does not commutate;When the electromagnet of 3-position 4-way electro-hydraulic reversing valve 18 is powered on, Then the electromagnet of electromagnetic relief valve 15 is powered on simultaneously, and 3-position 4-way electro-hydraulic reversing valve 18 whether left position electromagnet or Right position electromagnet is powered, and the electromagnet of electromagnetic relief valve 15 is powered simultaneously, and operating pressure can be formed by being conducive to system;Hydraulic oil 21 rod chamber of cylinder is connected with pilot operated compound relief valve 16, guarantees in 21 extending action of hydraulic cylinder, and oil return line will not be because of big stream Amount, oil circuit blocking generate back pressure, improve security of system;When 21 withdrawal of hydraulic cylinder acts, 21 rodless cavity of hydraulic cylinder connects The hydraulic control one-way valve 19 connect is opened, and is directly connected to fuel tank 1, that is, is increased the quick drainback passage of hydraulic cylinder 21, Neng Gouti It rises hydraulic cylinder 21 and withdraws speed, reduce more than half because waiting hydraulic cylinder 21 to withdraw the wasted working time, greatly Improve construction efficiency.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this Utility model.The utility model is limited only by the claims and their full scope and equivalents.

Claims (6)

1. a kind of main top hydraulic system of jacking construction, which is characterized in that including fuel tank (1), liquidometer (2), liquid thermometer (3), sky Air cleaner (4), electromagnetic relief valve (15), pilot operated compound relief valve (16), pressure gauge (17), 3-position 4-way electro-hydraulic reversing valve (18), hydraulic control one-way valve (19), shut-off valve (20), hydraulic cylinder (21), the first extraction assembly (22) and the second extraction assembly (23), the side of the fuel tank (1) is equipped with the first extraction assembly (22) and the second extraction assembly (23), and described first extracts Component (22) and second extraction assembly (23) setting parallel with one another;
The liquidometer (2), liquid thermometer (3) and air cleaner (4) are installed on fuel tank;
First extraction assembly (22) includes self-sealing oil absorption filter a (5), unidirectional volume adjustable hydraulic pump a (6), shaft coupling a (8), motor a (9) and check valve a (7), the self-sealing oil absorption filter a (5) are mounted on the side of fuel tank (1), and self-sealing The oil outlet of oil absorption filter a (5) is connect with the oil inlet of unidirectional volume adjustable hydraulic pump a (6) by oil pipe, the unidirectional variable liquid The input shaft of press pump a (6) passes through the output axis connection of shaft coupling a (8) and motor a (9), and the check valve a (7) passes through screwed pipe Connector is connect with the oil outlet of unidirectional volume adjustable hydraulic pump a (6);
Second extraction assembly (23) includes self-sealing oil absorption filter b (10), unidirectional volume adjustable hydraulic pump b (11), shaft coupling b (13), motor b (14) and check valve b (12), the self-sealing oil absorption filter b (10) are mounted on the side of fuel tank (1), and certainly The oil outlet of envelope formula oil absorption filter b (10) is connect with the oil inlet of unidirectional volume adjustable hydraulic pump b (11) by oil pipe, described unidirectional The input shaft of volume adjustable hydraulic pump b (11) passes through the output axis connection of shaft coupling b (13) and motor b (14), the check valve b (12) It is connect by screwed pipe joint with the oil outlet of unidirectional volume adjustable hydraulic pump b (11);
The P mouth of the 3-position 4-way electro-hydraulic reversing valve (18) respectively with check valve a (7), electromagnetic relief valve (15) and check valve b (12) connection communicates, and the 3-position 4-way electro-hydraulic reversing valve (18) and electromagnetic relief valve (15) are in parallel relationship, and 3-position 4-way The T mouth of electro-hydraulic reversing valve (18) is connect with fuel tank (1), the hydraulic cylinder (21) be provided with it is multiple, and hydraulic cylinder (21) it Between be in parallel relationship, the oil inlet of the hydraulic control one-way valve (19) and hydraulic cylinder (21) rodless cavity oil circuit connection, and hydraulic control list To the control mouth and hydraulic cylinder (21) rod chamber oil circuit connection of valve (19), the opposite ends point of the pilot operated compound relief valve (16) Not with fuel tank (1) and hydraulic cylinder (21) rod chamber oil circuit connection, the electromagnetic relief valve (15) and the pilot operated compound relief valve (16) it is connect with fuel tank (1).
2. the main top hydraulic system of a kind of jacking construction according to claim 1, which is characterized in that the 3-position 4-way is electro-hydraulic The Median Function of reversal valve (18) is O-shaped.
3. the main top hydraulic system of a kind of jacking construction according to claim 1, which is characterized in that the electromagnetic relief valve It (15) is open type.
4. the main top hydraulic system of a kind of jacking construction according to claim 1, which is characterized in that the electromagnetic relief valve (15) electromagnet in is associated with the electromagnet in the 3-position 4-way electro-hydraulic reversing valve (18) by electrical control.
5. the main top hydraulic system of a kind of jacking construction according to claim 1, which is characterized in that the 3-position 4-way is electro-hydraulic Reversal valve (18) and electromagnetic relief valve (15) junction are equipped with pressure gauge (17).
6. the main top hydraulic system of a kind of jacking construction according to claim 1, which is characterized in that the hydraulic cylinder (21) On shut-off valve (20) are installed.
CN201821272658.8U 2018-08-08 2018-08-08 A kind of main top hydraulic system of jacking construction Active CN208634508U (en)

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CN201821272658.8U CN208634508U (en) 2018-08-08 2018-08-08 A kind of main top hydraulic system of jacking construction

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Application Number Priority Date Filing Date Title
CN201821272658.8U CN208634508U (en) 2018-08-08 2018-08-08 A kind of main top hydraulic system of jacking construction

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110454470A (en) * 2019-08-20 2019-11-15 中航飞机起落架有限责任公司 The central hydraulic source shared based on more hydraulic terminal device networkings and its hydraulic configuration method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110454470A (en) * 2019-08-20 2019-11-15 中航飞机起落架有限责任公司 The central hydraulic source shared based on more hydraulic terminal device networkings and its hydraulic configuration method

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