CN204692222U - The two oil cylinder hydraulic jack-up system of self-raising tower crane - Google Patents
The two oil cylinder hydraulic jack-up system of self-raising tower crane Download PDFInfo
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- CN204692222U CN204692222U CN201520422519.9U CN201520422519U CN204692222U CN 204692222 U CN204692222 U CN 204692222U CN 201520422519 U CN201520422519 U CN 201520422519U CN 204692222 U CN204692222 U CN 204692222U
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- oil cylinder
- fuel tank
- oil
- overflow valve
- valve
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Abstract
The utility model discloses the two oil cylinder hydraulic jack-up system of a kind of self-raising tower crane, comprise two oil cylinder and fuel tank, equilibrium valve assembly, flow divider-combiner, hand-operated direction valve, high-pressure overflow valve and axial piston pump is disposed with from top to bottom between two oil cylinder and fuel tank, high-pressure overflow valve is the hydraulic pressure source of the two oil cylinder of tower crane, and the oil circuit at high-pressure overflow valve place is provided with pressure gauge; Axial piston pump relies on motor to provide power source, the oil inlet end of axial piston pump is provided with oil absorption filter, the backflow end of high-pressure overflow valve is provided with return filter; Fuel tank is provided with liquid level liquid thermometer and air-strainer; Oil absorption filter and return filter are all positioned at the inside of fuel tank.The utility model, by being provided with equilibrium valve assembly, flow divider-combiner, hand-operated direction valve and high-pressure overflow valve between two oil cylinder and fuel tank, effectively can solve the asynchronous problem of two cylinder jacking, makes the jacking of tower machine keep state of equilibrium.
Description
Technical field:
The utility model relates to a kind of oil cylinder hydraulic system, particularly relates to the two oil cylinder hydraulic jack-up system of a kind of self-raising tower crane.
Background technique:
The kind model of China's tower crane is a lot, the jack-up method of current self-raising tower crane generally adopts the jack-up method of the overall supernumerary segment of external cover shelf structure, standard knot, or the jack-up method of built-in cover shelf structure, in the air spelling standard knot, the outer sleeve frame of lifting guide support adding is enclosed in the outside of standard knot, the outer platform also needing lifting guide support adding, make its space taken comparatively large like this, stock volume is large, and steel product cost used is also corresponding higher.And continuing to increase along with tower type number, the structure of stock is also by increasing, and the manufacturing is by more and more difficult.Outer sleeve frame jacking apparatus, oil cylinder is only located at side usually, and because jacking load is comparatively large, occurred the obvious nonsynchronous problem of two jacking cylinders, the center of lifting operation is offset, and the jacking balance for tower machine has a negative impact.
Model utility content:
Technical problem to be solved in the utility model is: provide a kind of self-raising tower crane two oil cylinder hydraulic jack-up system, effectively solve the asynchronous problem of two cylinder jacking, makes the jacking of tower machine keep state of equilibrium.
The technological scheme that the utility model is taked for technical solution problem is:
The two oil cylinder hydraulic jack-up system of a kind of self-raising tower crane, comprise two oil cylinder and fuel tank, equilibrium valve assembly, flow divider-combiner, hand-operated direction valve, high-pressure overflow valve and axial piston pump is disposed with from top to bottom between two oil cylinder and fuel tank, described high-pressure overflow valve is the hydraulic pressure source of the two oil cylinder of tower crane, and the oil circuit at described high-pressure overflow valve place is provided with pressure gauge; Described axial piston pump relies on motor to provide power source, the oil inlet end of axial piston pump is provided with oil absorption filter, the backflow end of high-pressure overflow valve is provided with return filter.
Fuel tank is provided with liquid level liquid thermometer and air-strainer; Described oil absorption filter and return filter are all positioned at described fuel tank internal.
The utility model, by being provided with equilibrium valve assembly, flow divider-combiner, hand-operated direction valve and high-pressure overflow valve between two oil cylinder and fuel tank, effectively can solve the asynchronous problem of two cylinder jacking, makes the jacking of tower machine keep state of equilibrium.
Working principle of the present utility model is as follows:
Two oil cylinder is arranged in the side, front and back of stock respectively, and by driven by motor axial piston pump, manually the control unit such as selector valve drives Double-hydraulic-cylinder, thus driving load, make tower machine upper structure increase or decline, increase or reduce standard knot, completing jacking or fall the work cycle of joint.
1. unloading condition: hand-operated direction valve is in bit positions, hydraulic oil enters axial piston pump through oil absorption filter, more directly gets back to fuel tank through hand-operated direction valve neutral position, and system is in unloading condition.
2. jacking state: hand-operated direction valve is in left position (lifting position), hydraulic oil to flow divider-combiner, equilibrium valve assembly to oil cylinder through the left position of hand-operated direction valve, promotes cylinder piston rod and stretches out, realize the jacking of tower machine.
System pressure is set up by high-pressure overflow valve, modulatedly before this pressure dispatches from the factory reserves, and does not in use allow arbitrarily to adjust.Oil return through oil cylinder, the left position of hand-operated direction valve to fuel tank.
3. decline state: hand-operated direction valve is in right position (lowering position), and hydraulic oil arrives oil cylinder through the right position of hand-operated direction valve;
Oil return arrives fuel tank through oil cylinder, equilibrium valve assembly, the right position of hand-operated direction valve.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further explained and illustrate:
See Fig. 1, the two oil cylinder hydraulic jack-up system of a kind of self-raising tower crane, comprise left oil cylinder 1, right oil cylinder 2 and fuel tank 13, left equilibrium valve assembly 3, right equilibrium valve assembly 4, flow divider-combiner 5, hand-operated direction valve 6, high-pressure overflow valve 14 and axial piston pump 8 is disposed with from top to bottom between left and right oil cylinder and fuel tank 13, high-pressure overflow valve 14 is the hydraulic pressure source of the two oil cylinder of tower crane, and the oil circuit at high-pressure overflow valve 14 place is provided with pressure gauge 7; Described axial piston pump 8 relies on motor 10 to provide power source, and the oil inlet end of axial piston pump 8 is provided with oil absorption filter 9, and the backflow end of high-pressure overflow valve 14 is provided with return filter 15; Fuel tank 13 is provided with liquid level liquid thermometer 11 and air-strainer 12; Wherein: oil absorption filter 9 and return filter 15 are all positioned at the inside of fuel tank 13.
The utility model by left oil cylinder 1, right oil cylinder 2 and fuel tank 13 arrange left equilibrium valve assembly 3, right equilibrium valve assembly 4, flow divider-combiner 5, hand-operated direction valve 6 and high-pressure overflow valve 14, effectively can solve the asynchronous problem of two cylinder jacking, make the jacking of tower machine keep state of equilibrium.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. the two oil cylinder hydraulic jack-up system of self-raising tower crane, comprise two oil cylinder (1,2) and fuel tank (13), it is characterized in that: between described pair of oil cylinder (1,2) and fuel tank (13), be disposed with equilibrium valve assembly (3,4), flow divider-combiner (5), hand-operated direction valve (6), high-pressure overflow valve (14) and axial piston pump (8) from top to bottom, described high-pressure overflow valve (14) is the hydraulic pressure source of the two oil cylinder of tower crane, the oil circuit at described high-pressure overflow valve (14) place is provided with pressure gauge (7); Described axial piston pump (8) relies on motor (10) to provide power source, the oil inlet end of axial piston pump (8) is provided with oil absorption filter (9), the backflow end of high-pressure overflow valve (14) is provided with return filter (15).
2. the two oil cylinder hydraulic jack-up system of self-raising tower crane according to claim 1, is characterized in that: described fuel tank (13) is provided with liquid level liquid thermometer (11) and air-strainer (12); It is inner that described oil absorption filter (9) and return filter (15) are all positioned at described fuel tank (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520422519.9U CN204692222U (en) | 2015-06-18 | 2015-06-18 | The two oil cylinder hydraulic jack-up system of self-raising tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520422519.9U CN204692222U (en) | 2015-06-18 | 2015-06-18 | The two oil cylinder hydraulic jack-up system of self-raising tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204692222U true CN204692222U (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520422519.9U Expired - Fee Related CN204692222U (en) | 2015-06-18 | 2015-06-18 | The two oil cylinder hydraulic jack-up system of self-raising tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204692222U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604997A (en) * | 2014-11-21 | 2016-05-25 | 北京中如技术有限公司 | High pressure jacking hydraulic system for high-speed dynamic balancing machine hydraulic system |
| CN107366649A (en) * | 2017-07-21 | 2017-11-21 | 徐州徐工液压件有限公司 | A kind of large-tonnage tower crane twin-tub jacking apparatus and electrohydraulic control system |
| CN108892061A (en) * | 2018-09-11 | 2018-11-27 | 四川建设机械（集团）股份有限公司 | The double cylinder jacking systems of derrick crane |
-
2015
- 2015-06-18 CN CN201520422519.9U patent/CN204692222U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604997A (en) * | 2014-11-21 | 2016-05-25 | 北京中如技术有限公司 | High pressure jacking hydraulic system for high-speed dynamic balancing machine hydraulic system |
| CN107366649A (en) * | 2017-07-21 | 2017-11-21 | 徐州徐工液压件有限公司 | A kind of large-tonnage tower crane twin-tub jacking apparatus and electrohydraulic control system |
| CN108892061A (en) * | 2018-09-11 | 2018-11-27 | 四川建设机械（集团）股份有限公司 | The double cylinder jacking systems of derrick crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 450001 the 1-11 floor of No. 2, No. 2, No. 30, Changchun Road, hi tech Industrial Development Zone, Zhengzhou, Henan Patentee after: Henan No.1 Thermal Power Construction Co., Ltd. Address before: 450001 Henan Province, Zhengzhou city high tech Development Zone Long Chun road and Holly Street intersection Patentee before: Henan No.1 Thermal Power Construction Co. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20190618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |