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Intelligent separate control type hydraulic synchronous jacking system and method for replacing bridge support through same

A hydraulic synchronous jacking and hydraulic system technology, which is applied to bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as unsynchronized jacking, potential safety hazards, uneven jack force, etc., to reduce leakage, Solve the problem of internal leakage and the effect of not easy to generate heat

Inactive Publication Date: 2015-04-22
LIUZHOU OVM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The object of the present invention is to provide an intelligent split-controlled hydraulic synchronous jacking system and its method for replacing bridge supports. The plug pump independently controls each lifting jack or each group of jacking jacks; and double-closed-loop control of the force and displacement of the jacking jacks, automatically adjusts the force and displacement of the jacking jacks, so that the force of each jacking jack is uniform; Thoroughly solve the problems of unsynchronized jacking, uneven force on the jack, and potential safety hazards in the replacement of hydraulic jacking equipment for bridge supports

Method used

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  • Intelligent separate control type hydraulic synchronous jacking system and method for replacing bridge support through same
  • Intelligent separate control type hydraulic synchronous jacking system and method for replacing bridge support through same
  • Intelligent separate control type hydraulic synchronous jacking system and method for replacing bridge support through same

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Embodiment 1

[0070] An intelligent split-control hydraulic synchronous jacking system, including jacking device I, hydraulic system II and control system III;

[0071] The jacking device I described above is the actuator of the synchronous jacking system, which relies on the synchronous extension cylinder of the jack to lift the upper structure of the bridge, and after replacing the bridge support, relies on the jack to lower the beam synchronously;

[0072] The hydraulic system II is the power source of the jacking system, and performs relevant actions according to the instructions of the control system to drive the extension and retraction cylinders of the jack;

[0073] Control system Ⅲ is the brain of the jacking system, commanding the system to operate according to the prescribed steps; at the same time monitoring the movement posture of the components in real time, once the system is out of tolerance, the system will immediately alarm and stop to ensure the safety of the components; ...

Embodiment 2

[0089] A method for replacing bridge supports. The method is to use the intelligent split-control hydraulic synchronous jacking system composed of jacking device I, hydraulic system II and control system III described in Embodiment 1 of the present invention for bridge support replacement. The method for replacing the bridge support adopts the jacking device I as the actuator of the synchronous jacking system, which relies on the synchronous extension cylinder of the jack to lift the upper structure of the bridge, and after replacing the bridge support, relies on the jack to lower the beam synchronously; The hydraulic system II is used as the power source of the jacking system, and relevant actions are executed according to the instructions of the control system to drive the extension and retraction cylinders of the jack; the control system III directs the system to act according to the prescribed steps; at the same time, it monitors the movement posture of the components in rea...

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Abstract

An intelligent separate control type hydraulic synchronous jacking system comprises a jacking device, a hydraulic system and a control system. The jacking device comprises n lifting jacks. The hydraulic system comprises a frequency-variable motor, a starting box for controlling the frequency-variable motor to start and stop, n sets of multi-port and multi-pressure-output unit radial plunger pump heads and a valve set arranged between a lifting jack oil cylinder and the plunger pump heads. The valve set comprises an unloading electromagnetic valve, an overflow valve, an electromagnetic reversing valve, a hydraulic lock, a safety valve and a balancing valve. The n sets of unit radial plunger pump heads are driven by the same frequency-variable motor. Each set of unit radial plunger pump head corresponds to one lifting jack. The control system comprises an upper computer, a master control box, a pressure sensor and a displacement sensor, and 2<=n<=48. The intelligent separate control type hydraulic synchronous jacking system adopts a separate control and intelligent control mode, the unit radial plunger pump heads are used for independently controlling the lifting jacks and carry out double-closed-loop control over the stress and displacement of the lifting jacks, the stress and displacement of the lifting jacks are automatically controlled, and the synchronization performance is good.

Description

technical field [0001] The invention relates to a bridge construction machine and a construction method thereof, in particular to an intelligent split-control hydraulic synchronous jacking system and a method for replacing bridge supports. Background technique [0002] In the bridge structure, the support is the connection point between the upper and lower structures of the bridge. Its function is to transfer the load of the upper structure to the bridge pier smoothly and safely, and at the same time ensure that the structure is stable under load, temperature change, concrete shrinkage and deformation, etc. The free deformation under the influence of factors makes the actual stress of the upper and lower structures meet the design requirements of the structure, and protects the beam ends and pier caps from damage; however, the bridge support is made of rubber, and the product will , There will be defects and damages, which will cause great safety hazards to the operation of ...

Claims

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Application Information

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IPC IPC(8): B66F3/25F15B13/02E01D21/00
CPCB66F3/25E01D21/00F15B13/0807
Inventor 梁利文李兴奎严李荣郭世滔温建民曾航宇韦慧琳
Owner LIUZHOU OVM MASCH CO LTD
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