PLC hydraulic proportional synchronous lifting system for bridge lifting

Abstract

The application provides a PLC hydraulic proportional synchronous jacking system for bridge jacking, and relates to the technical field of building engineering. The PLC hydraulic proportional synchronous jacking system for bridge jacking comprises a general control module, a hydraulic pump group connection control module, a system valve control module, a plurality of hydraulic jacking device modules and a PLC line operation monitoring module, and output ends of the general control module are electrically connected to input ends of the hydraulic pump group connection control module and the system valve control module. By arranging the independent general control module, the plurality of hydraulic jacking device modules can be controlled in the independent bus mode, so that when a fault occurs in a single line, other jacking assemblies connected with the PLC elements will not immediately stop synchronously, and by arranging the independent secondary line switching module, line switching can be quickly completed, the normal operation of the jacking system is restored, and the influence of system failure on bridge jacking operation is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, in particular to a PLC hydraulic proportional synchronous jacking system for bridge jacking. BACKGROUND

[0002] Bridge jacking refers to a new bridge deviation rectification technology that lifts the main load-bearing structure of a bridge under the premise of not changing the original bridge form by using a hydraulic jacking system, and is mainly applied to the original bridge reconstruction project of cities in China to realize the reinforcement construction of existing urban bridges to meet the needs of consolidating traffic facilities. Bridge jacking adopts an integral hydraulic synchronous lifting scheme, does not damage the original bridge deck pavement layer, handrails, sidewalks, connections between beam plates, etc., has less interference to the surrounding during construction, does not need to requisition or demolish or occupy a large amount of construction site, can shorten the construction period and avoid repeated investment, and has good social and economic effects.

[0003] In the existing bridge jacking system, the operation of components such as hydraulic valves and jacks is mainly controlled by PLC elements, and is connected to the hydraulic jacking components through multiple signal lines, so as to control the synchronization of each jack, but in actual use, if a single line fails, the other jacking assemblies connected to the PLC element will not stop immediately, but need to be detected by the PLC element for a line connection detection to determine, which will cause the jacking assemblies to lose synchronization, thereby affecting the bridge being jacked. Therefore, the present application provides a PLC hydraulic proportional synchronous jacking system for bridge jacking to solve the problems existing in the current bridge jacking system. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present application provides a PLC hydraulic proportional synchronous jacking system for bridge jacking, which solves the problem that in the existing bridge jacking system, if a single connection line between the PLC element and the jacking assembly fails, the other jacking assemblies connected to the PLC element will not stop immediately, causing the jacking assemblies to lose synchronization and affecting the bridge being jacked.

[0006] (II) Technical solutions

[0007] In order to achieve the above object, the present application is realized by the following technical scheme: A PLC hydraulic proportional synchronous jacking system for bridge jacking, comprising a general control module, a hydraulic pump group connection control module, a system valve control module, a plurality of hydraulic jacking device modules and a PLC line operation monitoring module, the output end of the general control module is electrically connected to the input end of the hydraulic pump group connection control module and the system valve control module, the output end of the system valve control module is electrically connected to the input end of the hydraulic jacking device module, an oil circuit state monitoring unit is connected between the hydraulic pump group connection control module and the system valve control module, the output end of the plurality of hydraulic jacking device modules is electrically connected to the input end of the PLC line operation monitoring module, the output end of the general control module is electrically connected to a secondary line switching module, and the output end of the secondary line switching module is electrically connected to the input end of the hydraulic jacking device module.

[0008] Preferably, the general control module comprises a power supply controller, a system control terminal, a data transmission terminal and a power connection unit, the power supply controller is used for controlling the start and shutdown of the power supply, the system control terminal is a control platform of the jacking system, comprising operation buttons and display devices, the data transmission terminal is used for transmitting control signal data, and the power connection unit is used for connecting an external power supply.

[0009] Preferably, the hydraulic pump group connection control module comprises a PLC line connection unit, an ultrahigh pressure pump control unit, a signal transfer unit, a hydraulic oil pump station and a hydraulic oil delivery unit, the output end of the PLC line connection unit is electrically connected to the input end of the ultrahigh pressure pump control unit, the output end of the ultrahigh pressure pump control unit is electrically connected to the input end of the signal transfer unit and the hydraulic oil pump station respectively, the output end of the signal transfer unit is electrically connected to the hydraulic oil delivery unit, the hydraulic oil pump station and the hydraulic output unit are connected with the hydraulic oil delivery unit, and the output end of the signal transfer unit is electrically connected to a pressure detection unit.

[0010] Preferably, the system valve control module comprises a lifting and moving control valve, an electro-hydraulic servo control valve and a hydraulic uniform load control valve, the lifting and moving control valve is used for controlling the jacking direction of the hydraulic jacking device module, the electro-hydraulic servo control valve is used for automatically adjusting the pressure flow of the hydraulic jacking device module to complete the work cycle, and the hydraulic uniform load control valve is used for adjusting the system hydraulic load pressure.

[0011] Preferably, the hydraulic jacking device module comprises a middle frame, one end of the middle frame is fixedly connected with a side plate, the upper and lower sides of one end of the side plate are fixedly connected with electric push rods, and the front end of one side of the middle frame is slidably connected with a connecting frame.

[0012] Preferably, the front end of the electric push rod rod body is fixedly connected to the upper and lower sides of one end of the connecting frame, the front end of the connecting frame is fixedly connected with a jack, and the bottom end of the jack is fixedly connected with a bottom plate.

[0013] Preferably, the bottom end of the bottom plate is rotatably connected with a roller, the top end of the jack is fixedly connected with a top plate, and the rear end of the middle frame is fixedly connected with a rear plate.

[0014] Preferably, the front end of the rear plate is fixedly connected with a hydraulic pump adapter box, the hydraulic pump adapter box is connected with the jack through an output pipe, one end of the rear plate is fixedly connected with a connecting plate, one side of the connecting plate is fixedly connected with an electric control connector, and the bottom end of the middle frame is fixedly connected with a stand.

[0015] Preferably, the PLC line operation monitoring module comprises a line connection terminal, the output end of the line connection terminal is connected with a main line signal monitoring unit and a secondary line connection unit through a cable, the output end of the main line signal monitoring unit is connected with a data information sending unit and a monitoring terminal interface, the output end of the secondary line connection unit is connected with a multi-line connection device and a line access device, the line connection terminal is used for accessing the PLC cable, the main line signal monitoring unit is used for monitoring the main line data signal, and the secondary line connection unit is used for secondary line switching.

[0016] Preferably, the secondary line switching module comprises a line information switching terminal, a power supply adjustment controller and a line switching controller, the line information switching terminal is used for switching the PLC line, the power supply adjustment controller is used for adjusting the power supply, and the line switching controller is used for switching control of the PLC line.

[0017] Working principle: in the actual use process, the system needs to be placed under the bridge to be jacked first, then the system control terminal in the control module controls the operation of the hydraulic pump group connection control module and the system valve control module, and inputs the control command to the hydraulic jacking device module, so that the internal jack operates, the oil circuit state monitoring unit is connected between the hydraulic pump group connection control module and the system valve control module, the oil supply and starting state of the hydraulic pump group connection control module and the system valve control module can be monitored in real time through the oil circuit state monitoring unit, so as to ensure the stable operation of the multiple hydraulic jacking device modules, in the process of operation of the multiple hydraulic jacking device modules, the PLC line operation monitoring module can monitor the operation of the hydraulic jacking device module, ensure the reliability of the system line connection, and send an alarm when a fault occurs, the lifting movement control valve can control the jacking direction of the hydraulic jacking device module, and the electro-hydraulic servo control valve can automatically adjust the pressure flow of the hydraulic jacking device module to complete the work cycle, in the system, the line connection terminal is used to connect the PLC cable, the main line signal monitoring unit is mainly responsible for monitoring the main line data signal, the auxiliary line connection unit is used for auxiliary line switching, the line information switching terminal in the secondary line switching module is responsible for switching the PLC line, and the power supply adjustment controller can adjust the power output, the line switching controller controls the switching of the PLC line, by setting an independent control module, the hydraulic pump group connection control module and the system valve control module can control the multiple hydraulic jacking device modules in the form of independent bus, so that the system can avoid the synchronous stop of other jacking assemblies connected with the PLC element when a single line fails, so that the jacking assembly loses synchronism, and by setting an independent secondary line switching module, the line switching can be quickly completed, the normal operation of the jacking system is restored, and the state of reducing construction efficiency caused by system failure is avoided.

[0018] (Three) beneficial effects

[0019] The application provides a PLC hydraulic proportional synchronous jacking system for bridge jacking.

[0020] 1、The independent control module is set, which is connected with the hydraulic pump group connection control module and the system valve control module, so that the multiple hydraulic jacking device modules can be controlled in the form of independent bus, so that the system can avoid the synchronous stop of other jacking assemblies connected with the PLC element when a single line fails, so that the jacking assembly is always kept synchronous, and the secondary line switching module is set, so that the line switching can be quickly completed, the normal operation of the jacking system is restored, and the state of reducing construction efficiency caused by system failure is avoided.

[0021] 2、The present application can monitor the oil supply and starting state of the hydraulic pump group connection control module and the system valve control module in real time by setting the oil path state monitoring unit, guaranteeing stable operation of the multiple hydraulic jacking device modules, and ensuring the reliability of the system circuit connection through the PLC line operation monitoring module to monitor the operation of the hydraulic jacking device module during the operation of the multiple hydraulic jacking device modules, and issuing an alarm when a fault occurs, thereby improving the operation safety of the entire system. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall architecture of the system of the present application.

[0023] Figure 2 It is a schematic diagram of the overall architecture of the system of the present application.

[0024] Figure 3 It is a schematic diagram of the overall architecture of the system of the present application.

[0025] Figure 4 It is a schematic diagram of the overall architecture of the system of the present application.

[0026] Figure 5 It is a schematic diagram of the overall architecture of the system of the present application.

[0027] Figure 6 It is a schematic diagram of the overall architecture of the system of the present application.

[0028] Figure 7 It is a schematic diagram of the overall architecture of the system of the present application.

[0029] Figure 8 It is a schematic diagram of the overall architecture of the system of the present application.

[0030] Figure 9 It is a schematic diagram of the overall architecture of the system of the present application.

[0031] Wherein, 1, total control module; 101, power supply controller; 102, system control terminal; 103, data transmission terminal; 104, power connection unit; 2, hydraulic pump group connection control module; 201, PLC line connection unit; 202, ultrahigh pressure pump control unit; 203, signal transfer unit; 204, hydraulic oil pump station; 205, hydraulic oil delivery unit; 206, hydraulic output unit; 207, pressure detection unit; 3, system valve control module; 301, lifting movement control valve; 302, electro-hydraulic servo control valve; 303, hydraulic load sharing control valve; 4, hydraulic lifting device module; 401, mid-frame; 402, side plate; 403, electric push rod; 404, connecting frame; 405, jack; 406, bottom plate; 407, roller; 408, top plate; 409, rear plate; 410, hydraulic pump adapter box; 411, output pipe; 412, connecting plate; 413, electric control connector; 414, stand; 5, oil circuit state monitoring unit; 6, PLC line operation monitoring module; 601, line connection terminal; 602, main line signal monitoring unit; 603, data information sending unit; 604, monitoring terminal interface; 605, auxiliary line connection unit; 606, multi-line connection equipment; 607, line access device; 7, secondary line switching module; 701, line information switching terminal; 702, power supply adjustment controller; 703, line switching controller. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Embodiment one:

[0034] As Figure 1As shown, the embodiment of the present application provides a PLC hydraulic proportional synchronous jacking system for bridge jacking, which comprises a general control module 1, a hydraulic pump group connection control module 2, a system valve control module 3, a plurality of hydraulic jacking device modules 4 and a PLC line operation monitoring module 6, the output end of the general control module 1 is electrically connected to the input end of the hydraulic pump group connection control module 2 and the system valve control module 3 respectively, the output end of the system valve control module 3 is electrically connected to the input end of the hydraulic jacking device module 4, an oil circuit state monitoring unit 5 is connected between the hydraulic pump group connection control module 2 and the system valve control module 3, the output end of the plurality of hydraulic jacking device modules 4 is electrically connected to the input end of the PLC line operation monitoring module 6, and the output end of the general control module 1 is electrically connected to a secondary line switching module 7, and the output end of the secondary line switching module 7 is electrically connected to the input end of the hydraulic jacking device module 4.

[0035] In the embodiment, the hydraulic pump group connection control module 2 and the system valve control module 3 are controlled by the system control terminal 102 inside the general control module 1, and control instructions are input into the hydraulic jacking device module 4 to make the internal jack 405 operate, and the oil circuit state monitoring unit 5 is connected between the hydraulic pump group connection control module 2 and the system valve control module 3, so that the oil supply and starting state of the hydraulic pump group connection control module 2 and the system valve control module 3 can be monitored in real time through the oil circuit state monitoring unit 5, and the stable operation of the plurality of hydraulic jacking device modules 4 is ensured.

[0036] Meanwhile, in the system, by setting the independent general control module 1, the hydraulic pump group connection control module 2 and the system valve control module 3 can be controlled in the form of independent bus, so that compared with the conventional PLC hydraulic jacking system, when a single line fails, the jacking assembly connected with the PLC element will not stop synchronously.

[0037] Embodiment two:

[0038] Reference Figure 2 On the basis of the above-mentioned embodiment, the embodiment provides a PLC hydraulic proportional synchronous jacking system for bridge jacking, and the general control module 1 in the system comprises a power controller 101, a system control terminal 102, a data transmission terminal 103 and a power connection unit 104, the power controller 101 is used for controlling the starting and closing of the power supply, the system control terminal 102 is a control platform of the jacking system and comprises operation buttons and display devices, the data transmission terminal 103 is used for transmitting control signal data, and the power connection unit 104 is used for connecting an external power supply.

[0039] Embodiment three:

[0040] Reference Figure 3The embodiment provides a PLC hydraulic proportional synchronous jacking system for bridge jacking.

[0041] Embodiment four

[0042] Reference Figure 4 The embodiment provides a PLC hydraulic proportional synchronous jacking system for bridge jacking, and a system valve control module 3 in the system comprises a lifting movement control valve 301, an electro-hydraulic servo control valve 302 and a hydraulic load sharing control valve 303; the lifting movement control valve 301 is used for controlling the jacking direction of a hydraulic jacking device module 4; the electro-hydraulic servo control valve 302 is used for automatically adjusting the pressure flow of the hydraulic jacking device module 4 to complete a work cycle; and the hydraulic load sharing control valve 303 is used for adjusting the system hydraulic load pressure.

[0043] In the embodiment, during the operation of the plurality of hydraulic jacking device modules 4, the PLC line operation monitoring module 6 can monitor the operation of the hydraulic jacking device module 4, guarantees the reliability of system line connection, and sends an alarm when a fault occurs; the lifting movement control valve 301 can control the jacking direction of the hydraulic jacking device module 4; and the driving electro-hydraulic servo control valve 302 can automatically adjust the pressure flow of the hydraulic jacking device module 4 to complete a work cycle.

[0044] Embodiment five

[0045] Reference Figures 7-9The embodiment provides a PLC hydraulic proportional synchronous jacking system for bridge jacking, and the hydraulic jacking device module 4 in the system comprises a middle frame 401, the middle frame 401 is a structural mounting carrier of the whole hydraulic jacking device module 4, one end of the middle frame 401 is fixedly connected with a side plate 402, the upper side and the lower side of one end of the side plate 402 are fixedly connected with electric push rods 403, one side of the front end of the middle frame 401 is slidably connected with a connecting frame 404, the front end of the rod body of the electric push rod 403 is fixedly connected with the upper side and the lower side of one end of the connecting frame 404, the front end of the connecting frame 404 is fixedly connected with a jack 405, in the embodiment, the electric push rod 403 is started to operate, the connecting frame 404 is pushed to move linearly left and right, and therefore the synchronous adjustment of the position of the jack 405 is realized, the bottom end of the jack 405 is fixedly connected with a bottom plate 406, the bottom end of the bottom plate 406 is rotatably connected with a roller 407, the roller 407 is of a solid structure, the top end of the jack 405 is fixedly connected with a top plate 408, the rear end of the middle frame 401 is fixedly connected with a rear plate 409 in the middle, one side of the front end of the rear plate 409 is fixedly connected with a hydraulic pump adapter box 410, the hydraulic pump adapter box 410 is connected with the jack 405 through an output pipe 411, the hydraulic pump adapter box 410 can input hydraulic oil for the jack 405, one end of the rear plate 409 is fixedly connected with a connecting plate 412, one side of the connecting plate 412 is fixedly connected with an electric control connector 413, the bottom end of the middle frame 401 is fixedly connected with an upright frame 414, and the upright frame 414 is mainly a structural member for bearing the whole hydraulic jacking device module 4.

[0046] Embodiment six

[0047] Reference Figure 5 The embodiment provides a PLC hydraulic proportional synchronous jacking system for bridge jacking, and the PLC line operation monitoring module 6 in the system comprises a line connection terminal 601, the output end of the line connection terminal 601 is connected with a main line signal monitoring unit 602 and a secondary line connection unit 605 through cables respectively, the output end of the main line signal monitoring unit 602 is connected with a data information sending unit 603 and a monitoring terminal interface 604, and the output end of the secondary line connection unit 605 is connected with a multi-line connection device 606 and a line access device 607, in the system, the line connection terminal 601 mainly realizes the access of the PLC cable, the main line signal monitoring unit 602 can monitor the main line data signal, and the secondary line connection unit 605 can perform secondary line switching operation.

[0048] Embodiment seven

[0049] Reference Figure 6The embodiment is based on the above-mentioned embodiment, and provides a PLC hydraulic proportional synchronous jacking system for bridge jacking. The secondary circuit switching module 7 in the system comprises a circuit information switching terminal 701, a power supply adjusting controller 702 and a circuit switching controller 703. In the embodiment, the circuit information switching terminal 701 is arranged to switch the PLC circuit, the power supply adjusting controller 702 is used to adjust the power supply, and the circuit switching controller 703 is responsible for the switching control of the PLC circuit, so as to guarantee the normal operation of the system, quickly recover the normal operation of the jacking system, and avoid the state that the construction efficiency is reduced due to system failure.

[0050] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A PLC hydraulic proportional synchronous jacking system for bridge jacking, comprising a master control module (1), a hydraulic pump group connection control module (2), a system valve control module (3), a plurality of hydraulic jacking device modules (4) and a PLC line operation monitoring module (6), characterized in that: The output end of the total control module (1) is electrically connected with the input end of the hydraulic pump group connection control module (2) and the system valve control module (3) respectively, the output end of the system valve control module (3) is electrically connected with the input end of the hydraulic jacking device module (4), the hydraulic pump group connection control module (2) and the system valve control module (3) are connected with the oil circuit state monitoring unit (5), the output end of a plurality of hydraulic jacking device modules (4) is electrically connected with the input end of the PLC line operation monitoring module (6), the output end of the secondary line switching module (7) is electrically connected with the input end of the hydraulic jacking device module (4); The PLC line operation monitoring module (6) comprises a line connection terminal (601), the output end of the line connection terminal (601) is connected with a main line signal monitoring unit (602) and a secondary line connection unit (605) through a cable respectively, the output end of the main line signal monitoring unit (602) is connected with a data information sending unit (603) and a monitoring terminal interface (604), the output end of the secondary line connection unit (605) is connected with a multi-line connection device (606) and a line access device (607), the line connection terminal (601) is used for accessing the PLC cable, the main line signal monitoring unit (602) is used for monitoring the main line data signal, and the secondary line connection unit (605) is used for secondary line switching. The secondary line switching module (7) comprises a line information switching terminal (701), a power supply adjustment controller (702) and a line switching controller (703), the line information switching terminal (701) is used for switching the PLC line, the power supply adjustment controller (702) is used for adjusting the power supply, and the line switching controller (703) is used for switching control of the PLC line.

2. The PLC hydraulic proportional synchronous jacking system for bridge jacking according to claim 1, characterized in that: The total control module (1) comprises a power supply controller (101), a system control terminal (102), a data transmission terminal (103) and a power connection unit (104), the power supply controller (101) is used for controlling the start and shutdown of the power supply, the system control terminal (102) is a control platform of the jacking system, comprising an operation button and a display device, the data transmission terminal (103) is used for transmitting control signal data, and the power connection unit (104) is used for connecting an external power supply.

3. The PLC hydraulic proportional synchronous jacking system for bridge jacking according to claim 1, characterized in that: The hydraulic pump group connection control module (2) comprises a PLC circuit connection unit (201), an ultrahigh pressure pump control unit (202), a signal transfer unit (203), a hydraulic oil pump station (204) and a hydraulic oil delivery unit (205), the output end of the PLC circuit connection unit (201) is electrically connected with the input end of the ultrahigh pressure pump control unit (202), the output end of the ultrahigh pressure pump control unit (202) is respectively electrically connected with the input end of the signal transfer unit (203) and the hydraulic oil pump station (204), the output end of the signal transfer unit (203) is electrically connected with the hydraulic oil delivery unit (205), the hydraulic oil delivery unit (205) is connected between the hydraulic oil pump station (204) and the hydraulic output unit (206), and the output end of the signal transfer unit (203) is electrically connected with a pressure detection unit (207).

4. The PLC hydraulic proportional synchronous jacking system for bridge jacking according to claim 1, characterized in that: The system valve control module (3) comprises a lifting movement control valve (301), an electro-hydraulic servo control valve (302) and a hydraulic load sharing control valve (303), the lifting movement control valve (301) is used for controlling the lifting direction of the hydraulic lifting device module (4), the electro-hydraulic servo control valve (302) is used for automatically adjusting the pressure flow of the hydraulic lifting device module (4) to complete a work cycle, and the hydraulic load sharing control valve (303) is used for adjusting the system hydraulic load pressure.

5. The PLC hydraulic proportional synchronous jacking system for bridge jacking according to claim 1, characterized in that: The hydraulic lifting device module (4) comprises a middle frame (401), one end of the middle frame (401) is fixedly connected with a side plate (402), the upper and lower sides of one end of the side plate (402) are fixedly connected with electric push rods (403), and the front end of one side of the middle frame (401) is slidably connected with a connecting frame (404).

6. The PLC hydraulic proportional synchronous jacking system for bridge jacking according to claim 5, characterized in that: The front ends of rod bodies of the electric push rods (403) are fixedly connected with the upper and lower sides of one end of the connecting frame (404), the front end of the connecting frame (404) is fixedly connected with a jack (405), and the bottom end of the jack (405) is fixedly connected with a bottom plate (406).

7. The PLC hydraulic proportional synchronous jacking system for bridge jacking according to claim 6, characterized in that: The bottom end of the bottom plate (406) is rotatably connected with a roller (407), the top end of the jack (405) is fixedly connected with a top plate (408), and the rear end of the middle frame (401) is fixedly connected with a rear plate (409).

8. The PLC hydraulic proportional synchronous jacking system for bridge jacking according to claim 7, characterized in that: The front end of one side of the rear plate (409) is fixedly connected with a hydraulic pump adapter box (410), the hydraulic pump adapter box (410) and the jack (405) are connected through an output pipe (411), one end of the rear plate (409) is fixedly connected with a connecting plate (412), one side of the connecting plate (412) is fixedly connected with an electric control connector (413), and the bottom end of the middle frame (401) is fixedly connected with a stand (414).

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