CN212899196U - Hydraulic system for jacking steel platform formwork body - Google Patents
Hydraulic system for jacking steel platform formwork body Download PDFInfo
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- CN212899196U CN212899196U CN201922500752.5U CN201922500752U CN212899196U CN 212899196 U CN212899196 U CN 212899196U CN 201922500752 U CN201922500752 U CN 201922500752U CN 212899196 U CN212899196 U CN 212899196U
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Abstract
The utility model discloses a hydraulic system for jacking steel platform die carrier body, the oil supply circuit of system connects gradually oil pump motor group, check valve, ball valve, high pressure hose, hydraulic balance valve and hydraulic control check valve, connects gradually hydraulic control check valve, hydraulic balance valve, high pressure hose and ball valve on the oil return circuit, the electromagnetism overflow valve connects in parallel between oil supply circuit and oil return circuit, the proportional reversing valve connects between ball valve and electromagnetism overflow valve; a branch oil pipe between the high-pressure hose and the hydraulic balance valve on the oil supply loop is connected with the hydraulic balance valve and the hydraulic control one-way valve on the oil return loop, and a branch oil pipe between the high-pressure hose and the hydraulic balance valve on the oil return loop is connected with the hydraulic balance valve and the hydraulic control one-way valve on the oil supply loop; the oil supply loop and the oil return oil path are connected with other oil cylinders in parallel; the plunger of the jacking oil cylinder is provided with a displacement encoder, a displacement signal is transmitted to a control center, and the control center realizes synchronous movement of the plurality of jacking oil cylinders by adopting synchronous control.
Description
Technical Field
The utility model relates to a hydraulic system for jacking steel platform die carrier body belongs to hydraulic transmission technical field.
Background
At present, the super high-rise complex of huge steel reinforced concrete frame support + reinforced concrete core tube structure system, jacking steel platform die carrier hydraulic control system that domestic most producer researched usually adopts one set of hydraulic control system control multi-unit cylinder synchronous jacking, though the key function satisfies the operation requirement, still there are a lot of deficiencies, mainly show:
(1) the loop of the jacking oil cylinder is controlled, because the working time of the jacking steel platform die carrier is long, the oil cylinder and the valve group inevitably have internal leakage, the pressing force of the jacking cylinder is reduced after the internal leakage, the synchronous effect of the oil cylinder is influenced, the synchronous error of the oil cylinder is large, and therefore energy consumption, complex process control, easy problem occurrence and high failure rate are achieved.
(2) The original hydraulic control system of the jacking steel platform formwork body adopts a manual speed regulating valve to control synchronization of a plurality of sets of oil cylinders, the oil cylinders are synchronized by manually regulating the speed regulating valve on a pump station by an operator in the jacking process, the speed of the oil cylinders needs to be regulated for many times in the jacking process, the operator is required to continuously regulate the speed regulating valve according to the actual situation on site, the workload is large, and the precious maintenance time is wasted.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a hydraulic system for jacking steel platform die carrier body can guarantee the synchronous safe jacking of multiunit hydro-cylinder, improves the work efficiency of jacking steel platform die carrier body.
A hydraulic system for jacking a steel platform formwork body comprises a plurality of jacking oil cylinders, an oil supply oil way, an oil return oil way and an oil tank, wherein the oil supply oil way, the oil return oil way and the oil tank are used for providing hydraulic pressure for the jacking oil cylinders; the oil supply loop is sequentially connected with an oil pump motor set, a one-way valve, a ball valve, a high-pressure hose, a hydraulic balance valve and a hydraulic control one-way valve, the hydraulic balance valve, the high-pressure hose and the ball valve are sequentially connected on an oil return path of the jacking oil cylinder, the electromagnetic overflow valve is connected between the oil supply loop and the oil return path in parallel, and the proportional reversing valve is connected on an oil path between the ball valve and the electromagnetic overflow valve; a branch oil pipe between the high-pressure hose and the hydraulic balance valve on the oil supply loop is connected with the hydraulic balance valve and the hydraulic control one-way valve on the oil return loop, and a branch oil pipe between the high-pressure hose and the hydraulic balance valve on the oil return loop is connected with the hydraulic balance valve and the hydraulic control one-way valve on the oil supply loop; the oil supply loop and the oil return path between the electromagnetic overflow valve and the proportional directional valve are connected with the rest of oil cylinders in parallel; and a displacement encoder is arranged on a plunger of the jacking oil cylinders, a displacement signal is transmitted to a control center, and the control center realizes synchronous motion of the plurality of jacking oil cylinders by adopting synchronous control.
Furthermore, a pressure gauge is arranged on an oil path between the one-way valve and the proportional reversing valve.
Further, an oil drain ball valve is arranged at the bottom of the oil tank.
Furthermore, an oil return filter is arranged at the tail end of the oil return path.
Furthermore, a pressure relay is arranged on an oil supply loop between the hydraulic control one-way valve and the jacking oil cylinder.
Has the advantages that:
1. the utility model discloses a proportion electricity liquid proportion switching-over valve and PLC automatic control jacking are guaranteed in step that multiunit hydro-cylinder synchronization error is less than 3mm, through the PLC conversion, can show the displacement state of every hydro-cylinder each constantly on the control panel simultaneously.
2. The utility model discloses the upper and lower chamber oil inlet at jacking cylinder has all set up a two-way hydraulic lock of constituteing by hydraulic balance valve and liquid accuse check valve, can play the effect of locking hydro-cylinder like this, when taking place the cracked condition of outside input pipeline, the hydro-cylinder also can be pinned to pressure in the pneumatic cylinder, can not make the hydro-cylinder whereabouts, causes the incident.
3. The utility model discloses an electricity liquid proportional reversing valve and electric control replace original manual governor valve control, set up a displacement encoder on the plunger of every group master cylinder of accessible, it conveys the displacement signal to PLC control center, adopts with step-by-step theory of operation, guarantees the synchronous jacking of multiunit hydro-cylinder, realizes the automation of whole process, and this has improved jacking steel platform work efficiency, has shortened whole engineering cycle, has practiced thrift the project cost.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
The system comprises an oil tank 1, a liquid level liquid thermometer 2, an oil drain ball valve 3, an oil return filter 4, an oil pump motor set 5, a one-way valve 6, a pressure gauge 7, an electromagnetic overflow valve 8, a proportional reversing valve 9, a ball valve 10, a high-pressure hose 11, a hydraulic balance valve 12, a hydraulic control one-way valve 13, a pressure relay 14 and a jacking oil cylinder 15.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
As shown in the attached drawing 1, the utility model provides a hydraulic system for jacking steel platform formwork body, which comprises an oil tank 1 with an oil drain ball valve 3 at the bottom, a liquid level liquid thermometer 2, an oil return filter 4, an oil pump motor group 5, a one-way valve 6, a pressure gauge 7, an electromagnetic overflow valve 8, a proportional reversing valve 9, a ball valve 10, a high-pressure hose 11, a hydraulic balance valve 12, a hydraulic control one-way valve 13, a pressure relay 14 and ten jacking oil cylinders 15;
an oil pump motor set 5, a one-way valve 6, a ball valve 10, a high-pressure hose 11, a hydraulic balance valve 12 and a hydraulic control one-way valve 13 are sequentially connected to an oil supply loop of one jacking oil cylinder, a pressure relay 14 is installed on the oil supply loop between the hydraulic control one-way valve 13 and the jacking oil cylinder, and a pressure gauge 7 is installed on an oil path between the one-way valve 6 and a proportional reversing valve 9.
A hydraulic control one-way valve 13, a hydraulic balance valve 12, a high-pressure hose 11 and a ball valve 10 are sequentially connected to an oil return path of the jacking oil cylinder 15, an electromagnetic overflow valve 8 is connected in parallel between an oil supply loop and the oil return path, and a proportional directional valve 9 is connected to an oil path between the ball valve 10 and the electromagnetic overflow valve 8; a branch oil pipe between the high-pressure hose 11 and the hydraulic balance valve 12 on the oil supply loop is connected with the hydraulic balance valve 12 and the hydraulic control one-way valve 13 on the oil return loop, and a branch oil pipe between the high-pressure hose 11 and the hydraulic balance valve 12 on the oil return loop is connected with the hydraulic balance valve 12 and the hydraulic control one-way valve 13 on the oil supply loop; the oil supply loop and the oil return path between the electromagnetic overflow valve 8 and the proportional directional valve 9 are connected with the other nine jacking oil cylinders in parallel; the plunger of the jacking oil cylinder 15 is provided with a displacement encoder, a displacement signal is transmitted to a control center, and the control center realizes synchronous movement of the plurality of jacking oil cylinders by adopting synchronous control.
The two groups of hydraulic balance valves 12 and hydraulic control one-way valves 13 in the oil supply loop and the oil return loop jointly form a bidirectional hydraulic lock of the jacking oil cylinder, and the two groups of hydraulic balance valves and hydraulic control one-way valves can be designed into module units to be integrally disassembled, assembled and replaced in a hydraulic system.
The lifting process of the lifting oil cylinder is explained by taking the lifting oil cylinder as an example, an oil pump motor set 5 pumps oil in an oil tank into an oil way, pressure oil sequentially enters an electromagnetic overflow valve 8, a proportional directional valve 9, a ball valve 10, a high-pressure hose 11, a hydraulic balance valve 12 and a hydraulic control one-way valve 13 through a one-way valve and then enters a lower cavity of the lifting oil cylinder to push a movable part to lift, and the pressure oil is divided into a branch to flow to the hydraulic balance valve 12 on the right side before entering the hydraulic balance valve 12 and opens the hydraulic control one-way valve 13, so that an oil return oil way is smooth; the pressure oil in the upper cavity of the oil cylinder passes through the right hydraulic control one-way valve 13, the hydraulic balance valve 12 and the high-pressure hose 11, and the return oil flows back to the return oil filter 4 to the oil tank 1 through the proportional reversing valve 9.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A hydraulic system for jacking a steel platform formwork body is characterized by comprising a plurality of jacking oil cylinders, an oil supply oil way, an oil return oil way and an oil tank, wherein the oil supply oil way, the oil return oil way and the oil tank are used for providing hydraulic pressure for the jacking oil cylinders; the oil supply oil path is sequentially connected with an oil pump motor set, a one-way valve, a ball valve, a high-pressure hose, a hydraulic balance valve and a hydraulic control one-way valve, the oil return oil path of the jacking oil cylinder is sequentially connected with the hydraulic control one-way valve, the hydraulic balance valve, the high-pressure hose and the ball valve, the electromagnetic overflow valve is connected between the oil supply oil path and the oil return oil path in parallel, and the proportional reversing valve is connected on the oil path between the ball valve and the electromagnetic overflow valve; a branch oil pipe between the high-pressure hose and the hydraulic balance valve on the oil supply path is connected with the hydraulic balance valve and the hydraulic control one-way valve on the oil return path, and a branch oil pipe between the high-pressure hose and the hydraulic balance valve on the oil return path is connected with the hydraulic balance valve and the hydraulic control one-way valve on the oil supply path; the oil supply oil path and the oil return oil path between the electromagnetic overflow valve and the proportional directional valve are connected with the rest of the oil cylinders in parallel; and a displacement encoder is arranged on a plunger of the jacking oil cylinders, a displacement signal is transmitted to a control center, and the control center realizes synchronous motion of the plurality of jacking oil cylinders by adopting synchronous control.
2. The hydraulic system for jacking a steel platform formwork body as claimed in claim 1, wherein a pressure gauge is installed on an oil path between the one-way valve and the proportional reversing valve.
3. The hydraulic system for jacking a steel platform formwork body as claimed in claim 1 or 2, wherein the bottom of the oil tank is provided with an oil drain ball valve.
4. The hydraulic system for jacking a steel platform formwork body of claim 3, wherein the end of the oil return path is provided with an oil return filter.
5. The hydraulic system for jacking a steel platform formwork body as claimed in claim 4, wherein a pressure relay is installed on an oil supply path between the hydraulic control one-way valve and the jacking cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500752.5U CN212899196U (en) | 2019-12-31 | 2019-12-31 | Hydraulic system for jacking steel platform formwork body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500752.5U CN212899196U (en) | 2019-12-31 | 2019-12-31 | Hydraulic system for jacking steel platform formwork body |
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| CN212899196U true CN212899196U (en) | 2021-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412852A (en) * | 2021-12-30 | 2022-04-29 | 湖南中联重科应急装备有限公司 | Oil cylinder hydraulic circuit, vertical supporting leg hydraulic system and engineering vehicle |
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2019
- 2019-12-31 CN CN201922500752.5U patent/CN212899196U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412852A (en) * | 2021-12-30 | 2022-04-29 | 湖南中联重科应急装备有限公司 | Oil cylinder hydraulic circuit, vertical supporting leg hydraulic system and engineering vehicle |
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