Track equipment capable of automatically limiting and rectifying deviation under small-space incremental launching construction operation

Abstract

The invention discloses track equipment capable of automatically limiting and rectifying deviation under small-space incremental launching construction operation, which comprises a sliding platform, a pressure-bearing sliding block, a first electromagnetic structure, a second electromagnetic structure, a wireless ranging strain sensor and an electromagnetic force control system, and is characterized in that the pressure-bearing sliding block slides along the length direction of the sliding platform; the first electromagnetic structures are distributed on the two sides of the sliding platform, the two second electromagnetic structures are symmetrically arranged on the two sides of the pressure-bearing sliding block, the wireless ranging strain sensors are installed on the opposite side faces of the first electromagnetic structures and the second electromagnetic structures respectively, and the electromagnetic force control system comprises a signal receiving and transmitting processing module and a relay sliding rheostat. According to the deviation rectifying device, deviation rectifying operation is conducted on the pressure-bearing sliding block through the first electromagnetic structure and the second electromagnetic structure which are arranged and distributed, the relay sliding rheostat controls the current of an electromagnetic circuit of the first electromagnetic structure, accurate control over magnetic force is achieved, the deviation rectifying speed can be autonomously controlled, and high efficiency and accuracy of deviation rectifying work are guaranteed to the maximum extent.

Description

Technical Field

[0001] The invention relates to the technical field of bridge engineering construction, and in particular to a track equipment capable of automatically limiting and correcting deviation in a small space jacking construction operation. Background Art

[0002] With the rapid development of my country's transportation industry, inevitable intersections have been formed between various transportation routes, which has greatly restricted the construction space for subsequent new bridges, thereby increasing the difficulty of construction work and posing a considerable degree of safety issues.

[0003] At present, the construction method of bridge crossing under the influence of existing traffic lines mostly adopts the jacking construction scheme of crossing from the upper part of the traffic line. This construction can not only overcome the problem of insufficient working space, but also can guarantee the safety and quality of construction to the greatest extent. However, there is an inevitable deviation phenomenon in the traditional jacking construction process, that is, the preset jacking axis and the bridge structure are offset. In order to prevent the structure from deviating from the preset track, a large number of personnel are required to measure the offset, which not only wastes a lot of manpower and material resources, but also makes it difficult to ensure the construction efficiency. At the same time, the jacking construction operation lasts for a long time, and it is difficult for the deviation observer to always maintain the working state. Therefore, the deviation phenomenon in the jacking construction process is generally not easy to be observed in time, which leads to the jacking progress stopping, and prolongs the time of jacking construction to a considerable extent. The jacking correction process is inevitably accompanied by the bridge and the guide beam part being suspended for a long time above the traffic line in the jacking direction, which poses a huge safety hazard and poor traffic line safety. In addition, when the bridge structure system deviates from the track, workers are required to use small jacks and hammers to hit the sliders, or even modify part of the slide rails. This not only causes damage to the structure, but may also change the initial force mode of the structure system, greatly increasing the difficulty of the jacking construction work, poor stability, and limited operation.

[0004] Therefore, the present application proposes a track equipment that can automatically limit and correct deviation in small-space jacking construction operations to solve the above-mentioned problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a track equipment capable of automatically limiting deviation correction in small-space jacking construction operations with timely correction, high precision and automation.

[0006] In order to solve the above technical problems, the present invention comprises:

[0007] Sliding platform;

[0008] A pressure-bearing slider, which slides along the length direction of the sliding platform;

[0009] A first electromagnetic structure, wherein the first electromagnetic structure is distributed on both sides of the sliding platform and arranged along the length direction of the sliding platform;

[0010] A second electromagnetic structure, wherein two second electromagnetic structures are symmetrically arranged on both sides of the pressure-bearing slider, and the second electromagnetic structure is arranged corresponding to the first electromagnetic structure;

[0011] A wireless ranging strain sensor, wherein the wireless ranging strain sensor is provided in two groups and is respectively installed on opposite sides of the first electromagnetic structure and the second electromagnetic structure;

[0012] An electromagnetic force control system, the electromagnetic force control system includes a signal receiving and transmitting processing module and a relay sliding rheostat, the signal receiving and transmitting processing module wirelessly communicates with the wireless ranging strain sensor, the relay sliding rheostat is installed on the electromagnetic circuit of the first electromagnetic structure and the relay sliding rheostat is electrically connected to the signal receiving and transmitting processing module.

[0013] Preferably, the sliding platform comprises a U-shaped base frame and an insulating slide plate, wherein the insulating slide plate is laid on the top surface of the U-shaped base frame and two sides of the insulating slide plate are fixedly connected to the U-shaped base frame via triangular supports.

[0014] Preferably, limit adjustment arms are provided on both sides of the pressure-bearing sliding block, and the limit adjustment arms are fixedly connected to the second electromagnetic structure.

[0015] Preferably, the limit adjustment arm includes a vertical arm and a transverse arm, a main cylinder is provided on the end face of one end of the transverse arm, small cylinders are distributed around the main cylinder, and the main cylinder and the small cylinder are provided with scales along the axial direction, the main cylinder and the small cylinder are plugged into the vertical arm, and a rectangular baffle is provided on the bottom surface of the other end of the transverse arm, and a rectangular limit groove is fixedly connected to the side of the pressure-bearing slider, and the rectangular baffle is plugged and fixed to the rectangular limit groove.

[0016] Preferably, the pressure-bearing slider is provided with a through groove along the sliding direction, and an outer limiting plate and an inner limiting plate are respectively provided at both ends of the through groove, the inner limiting plate is embedded and fixed in the port of the through groove, the outer limiting plate is fixedly connected to the pressure-bearing slider, and the outer limiting plate and the inner limiting plate are both provided with a plurality of through holes for the steel strands to pass through.

[0017] Preferably, the first electromagnetic structure and the second electromagnetic structure are the same electromagnetic structure, a power supply is installed on the second electromagnetic structure, and the first electromagnetic structure and the second electromagnetic structure on the same side of the sliding platform are symmetrically arranged.

[0018] Preferably, the electromagnetic structure includes an insulating outer shell frame, an insulating skeleton, a high magnetic flux core and a multi-magnetic flux coil, the multi-magnetic flux coil is wound around the outside of the high magnetic flux core, the insulating skeleton is fixedly installed in the insulating outer shell and a plurality of placement cavities are provided on the insulating skeleton, the high magnetic flux core is fixed in the placement cavity and a through hole coaxial with the high magnetic flux core is opened on the side of the insulating outer shell frame.

[0019] Preferably, the placement cavities are distributed in two rows, each row having three placement cavities, two rows of through holes are correspondingly opened on the side of the insulating outer shell frame, and an installation groove is provided between the two rows of through holes, and the wireless ranging strain sensor is installed in the installation groove.

[0020] Preferably, the wireless ranging strain sensor includes a bow-shaped rebound metal plate, a base, a containing shell and a groove-shaped blocking piece, the groove-shaped blocking piece is fixedly connected to one end face of the containing shell, the base is fixedly connected to the other end face of the containing shell, a deformation strain gauge is pasted on the concave surface of the bow-shaped rebound metal plate, and a telescopic rod is fixedly connected to the concave surface of the bow-shaped rebound metal plate, the telescopic rod passes through the groove-shaped blocking piece and is slidably connected to the containing shell, and a reset spring is connected between the groove-shaped blocking piece and the bow-shaped rebound metal plate.

[0021] Preferably, the electromagnetic force control system includes an operating box housing and a touch display screen, the relay sliding rheostat and the signal receiving and processing module are all installed in the operating box housing, the relay sliding rheostat includes a conductive sliding rod, a cross brace and a contact pin, both ends of the conductive sliding rod are fixedly connected to a vertical baffle, the bottom of the vertical baffle is fixedly connected to a base plate, the base plate is fixed to the bottom of the operating box housing, the cross brace is located below the conductive sliding rod, both ends of the cross brace are fixedly connected to a fixing plate, the fixing plate is fixedly connected to the base plate, a coil is tightly spirally wound on the cross brace to form a coil column, one end of the contact pin is fixedly connected to a sliding plate, the sliding plate is slidably connected to the conductive sliding rod, the other end of the contact pin is in contact with the coil, one end of the coil and one end of the conductive sliding rod are connected to the electromagnetic circuit of the first electromagnetic structure.

[0022] The beneficial effects of the present invention are as follows: the present invention can accurately monitor the jacking deviation of the bridge through the wireless ranging strain sensor, and transmit the deviation signal to the signal receiving and sending processing module, and use the electromagnetic repulsion principle of the arranged and distributed first electromagnetic structure and the second electromagnetic structure to perform a deviation correction operation on the pressure-bearing sliding block, so that deviations can be responded to in a timely manner, the deviation correction function is strong, and the deviation correction can be completed in a relatively short time, which greatly improves the efficiency of jacking construction, saves a lot of worker operating costs, does not require the auxiliary deviation correction of the jack, saves the cost of equipment rental, and saves a lot of labor and construction costs for jacking construction. The current of the electromagnetic circuit of the first electromagnetic structure is controlled by the relay sliding rheostat, and then the magnetic force is controlled to achieve precise control of the magnetic force, and the speed of the deviation correction can be controlled autonomously, thereby ensuring the efficiency and accuracy of the deviation correction work to the greatest extent.

[0023] The overall structure of the present invention adopts an assembled structure, which is economical and environmentally friendly, and the work quality is guaranteed. It can be prefabricated in advance and assembled on site, and the assembly time is short, the construction efficiency is high, and it can be reused, which further saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic plan view of the overall structure of the present invention;

[0026] Figure 3 It is a side schematic diagram of the overall structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the connection between the sliding platform and the pressure-bearing sliding block of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the limit adjustment arm of the present invention;

[0029] Figure 6 It is an overall three-dimensional schematic diagram of the first electromagnetic structure of the present invention;

[0030] Figure 7 It is a schematic diagram of an insulating frame and an insulating outer shell frame in a first electromagnetic structure of the present invention;

[0031] Figure 8 It is a three-dimensional schematic diagram of the wireless ranging strain sensor of the present invention;

[0032] Fig. 9 It is a side schematic diagram of the electromagnetic force control system of the present invention.

[0033] In the figure: 1, sliding platform; 11, U-shaped chassis; 12, insulating slide plate; 13, triangular support; 2, pressure-bearing slider; 21, outer limit plate; 22, inner limit plate; 3, first electromagnetic structure; 31, insulating outer shell frame; 32, insulating skeleton; 33, high magnetic flux core; 34, multi-flux coil; 35, placement cavity; 36, installation groove; 37, through hole; 4, second electromagnetic structure; 5, wireless ranging strain sensor; 51, bow-shaped rebound metal plate; 52, base; 53, containing shell; 54, slot-shaped blocking sheet; 55, telescopic rod; 56 , reset spring; 57, deformation strain gauge; 6, electromagnetic force control system; 61, signal receiving and processing module; 62, relay sliding rheostat; 621, conductive sliding rod; 622, horizontal support rod; 623, contact pin; 624, vertical baffle; 625, bottom plate; 626, fixed plate; 627, coil; 628, slide; 63, operation box shell; 64, touch screen; 7, limit adjustment arm; 71, vertical arm; 72, horizontal arm; 73, main cylinder; 74, small cylinder; 75, rectangular baffle; 76, rectangular limit groove; 8, power supply. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. All directional indications in the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] like Figure 1-9As shown, the present embodiment provides an automatic limiting and deviation-correcting track equipment for top-pushing construction operations in a small space, including a sliding platform 1, a pressure-bearing slider 2, a first electromagnetic structure 3, a second electromagnetic structure 4, a wireless ranging strain sensor 5 and an electromagnetic force control system 6. The pressure-bearing slider 2 slides along the length direction of the sliding platform 1, the first electromagnetic structures 3 are distributed on both sides of the sliding platform 1 and are arranged along the length direction of the sliding platform 1, two adjacent first electromagnetic structures 3 are closely arranged, the second electromagnetic structures 4 are two and symmetrically arranged on both sides of the pressure-bearing slider 2, the second electromagnetic structures 4 are arranged corresponding to the first electromagnetic structures 3, the wireless ranging strain sensors 5 are arranged in two groups, and the two A group of wireless ranging strain sensors 5 are respectively installed on the opposite sides of the first electromagnetic structure 3 and the second electromagnetic structure 4. The electromagnetic force control system 6 includes a signal receiving and transmitting processing module 61 and a relay sliding rheostat 62. The signal receiving and transmitting processing module 61 wirelessly communicates with the wireless ranging strain sensor 5. The relay sliding rheostat 62 is installed on the electromagnetic circuit of the first electromagnetic structure 3 and the relay sliding rheostat 62 is electrically connected to the signal receiving and transmitting processing module 61. The electromagnetic force control system 6 supplies power to the first electromagnetic structure 3 and adjusts the current on the electromagnetic circuit in the first electromagnetic structure 3 by controlling the relay sliding rheostat 62, thereby adjusting the magnetic force of the first electromagnetic structure 3.

[0036] like Figure 4 As shown, in this example, the sliding platform 1 includes a U-shaped chassis 11 and an insulating slide plate 12. The insulating slide plate 12 is laid on the top surface of the U-shaped chassis 11 and the two sides of the insulating slide plate 12 are fixedly connected to the U-shaped chassis 11 through triangular supports 13. The insulating slide plate 12 is made of lightweight and high-strength material, and the cross-sectional shape is a T-shaped structure with slightly thin wings and thicker middle part. It is designed according to the specific gravity of different parts and conforms to the characteristics of load bearing, providing reliable support for the upper pressure-bearing slider 2. The U-shaped chassis 11 is made of lightweight and high-strength insulating material, and the overall structure is designed as a structural form with narrow wings and wide upper part. Holes are reserved on the insulating plates on both sides, which can provide fixed support conditions for the first electromagnetic structure 3 to be arranged in array. The triangular support 13 is made of lightweight and high-strength insulating material, and the structure is divided into two parts. It supports the oblique support of the insulating slide plate 12, and the function of this part is to support the insulating slide plate 12 and provide upward support force. The base of the triangular support 13 is designed to be a rectangular plate structure, and bolt holes are reserved on the outer side of the rectangular plate, so that the triangular support 13, the top insulating slideway and the U-shaped base frame 11 can be integrated by bolts.

[0037] like Figure 4-5As shown, the two sides of the pressure-bearing slider 2 are provided with limit adjustment arms 7, and the limit adjustment arms 7 are fixedly connected to the second electromagnetic structure 4. The limit adjustment arm 7 includes a vertical arm 71 and a horizontal arm 72, and the end surface of one end of the horizontal arm 72 is provided with a main cylinder 73, and four small cylinders 74 are distributed around the main cylinder 73, and the main cylinder 73 and the small cylinder 74 are both provided with scales along the axial direction. The main cylinder 73 and the small cylinder 74 are plugged with the vertical arm 71, and the bottom surface of the other end of the horizontal arm 72 is provided with a rectangular baffle 75, and the side of the pressure-bearing slider 2 is fixedly connected with a rectangular limit groove 76, and the rectangular baffle 75 is plugged and fixed with the rectangular limit groove 76.

[0038] The vertical arm 71 is made of a lightweight and high-strength material. The function of the vertical arm 71 is to receive the second electromagnetic structure 4, provide a vertical receiving force for the second electromagnetic structure 4, and prevent the second electromagnetic structure 4 from detaching. The upper part of the vertical arm 71 is reserved with "four small and one large" holes, and holes are reserved on both sides to fix the "four small and one large" main cylinder 73 and small cylinder 74 on the horizontal arm 72. The connection between the vertical arm 71 and the second electromagnetic structure 4 adopts a fully covered rectangular plate, and bolt holes are reserved on the upper part so that the second electromagnetic structure 4 and the vertical arm 71 can be fixed by high-strength bolts and nuts to form an integrated structure.

[0039] The horizontal arm 72 is made of light and high-strength material and has a rectangular structure. The function of the horizontal arm 72 is to receive the vertical arm 71 and the pressure-bearing slider 2. The large cylinder has a scale inside to accommodate tracks of different horizontal sizes. The rectangular baffle 75 at the root of the horizontal arm 72 is designed with two plug holes. A special plug-in is used to plug and fix the rectangular baffle 75 and the rectangular limit groove 76, so that the horizontal arm 72 can be firmly fixed on the upper part of the horizontal slider to form a stable support.

[0040] The pressure-bearing slider 2 is provided with a through groove along the sliding direction, and an outer limiting plate 21 and an inner limiting plate 22 are respectively provided at both ends of the through groove. The inner limiting plate 22 is embedded in the port fixed in the through groove, and the outer limiting plate 21 is fixedly connected to the pressure-bearing slider 2. The outer limiting plate 21 and the inner limiting plate 22 are both provided with a plurality of through holes for the steel strand to pass through. The rectangular limiting groove 76 is fixed on both sides of the pressure-bearing slider 2, and the rectangular baffle 75 on the transverse arm 72 is inserted into the rectangular limiting groove 76, and the special plug-in is inserted from the jack of the rectangular baffle 75 into the hole of the rectangular limiting groove 76, thereby completing the fixed connection between the transverse arm 72 and the pressure-bearing slider 2. The pressure-bearing slider 2 can adopt a hollow structure similar to a grid, which greatly reduces the weight of the structure and reduces the difficulty of tensioning and traction of the steel strand.

[0041] like Figure 6 , 7As shown, the first electromagnetic structure 3 and the second electromagnetic structure 4 adopt the same electromagnetic structure, and a power supply 8 is installed on the second electromagnetic structure 4. The power supply 8 uses a high-power power supply. In order to avoid damage to the power supply due to rainy weather, a lightweight insulating protective shell is installed on the outside of the power supply. The protective shell adopts a rectangular design. The power supply 8 is placed inside the protective shell, and the protective shell is installed on the outside of the second electromagnetic structure 4. The power supply is connected to the signal receiving and sending processing module 61 through wires. The function of the external power supply 8 is to supply power to the multi-flux coil 34, thereby magnetizing the iron core and forming a mutual repulsion force, so as to achieve the purpose of correction, and the first electromagnetic structure 3 and the second electromagnetic structure 4 on the same side of the sliding platform 1 are symmetrically arranged. The electromagnetic structures of the first electromagnetic structure 3 and the second electromagnetic structure 4 include an insulating outer shell frame 31, an insulating skeleton 32, a high magnetic flux core 33 and a multi-magnetic flux coil 34, the multi-magnetic flux coil 34 is wound around the outside of the high magnetic flux core 33, the insulating skeleton 32 is fixedly installed in the insulating shell and a plurality of placement cavities 35 are provided on the insulating skeleton 32, the high magnetic flux core 33 is fixed in the placement cavity 35 and a through hole 37 coaxial with the high magnetic flux core 33 is provided on the side of the insulating outer shell frame 31. The placement cavities 35 are distributed in two rows, upper and lower, and each row of placement cavities 35 has three, the side of the insulating outer shell frame 31 is correspondingly provided with two rows of through holes 37 and a mounting groove 36 is provided between the two rows of through holes 37, and the wireless ranging strain sensor 5 is installed in the mounting groove 36.

[0042] The insulating outer shell frame 31 is made of lightweight and high-strength insulating material, and has a rectangular shell with a large degree of inclusion, which wraps the internal structure as a whole and isolates the influence of magnetic force on the external structure. Bolt holes are reserved on the outermost side of the insulating outer shell frame 31, so that the insulating frame 32 can form an integral body with the insulating outer shell structure.

[0043] The insulating skeleton 32 is made of lightweight and high-strength insulating material to avoid the overall structure from generating mutual repulsion on the metal core and causing unnecessary influence. The insulating skeleton 32 adopts a partitioned assembly design, adopts an upper, middle and lower partition design, and is divided horizontally. The partitioned structure not only overcomes the problem of mutual influence after different cores are energized, but also can provide more reliable support conditions for each core and coil 627 structure, making the structure more stable. At the same time, the outermost layer of the insulating skeleton 32 is designed with a protruding ring structure, with a total of 6 ring structures, and 6 bolt holes are reserved on each ring structure, which correspond to the reserved bolt holes on the outermost side of the insulating outer shell frame 31, so that they can be fixed by bolts later, and then form a whole, so that the structure can achieve the purpose of integration through assembly and combination.

[0044] The high magnetic flux core 33 is made of high-quality metal with good current drainage performance, fast magnetic flux and magnetization speed. The cross-sectional shape of the core is circular, and the overall shape is a cylindrical structure. This structure is not only easy to wind the coil 627, but also can maintain the maximum magnetic flux to the greatest extent, so that the metal core produces a stronger repulsive force.

[0045] The material of the multi-flux coil 34 is copper wire with good electrical conductivity. By integrating multiple strands of copper wire to form a whole flux coil 627, the iron core can be more magnetized, so that the high-conductivity flux iron core 33 can generate a stronger mutual repulsion. The winding method of the multi-flux coil 34 is spiral winding, which can completely wrap the high-conductivity flux iron core 33. The horizontal layer distribution of the high-conductivity flux iron core 33 can maximize the magnetic flux, thereby enhancing the mutual repulsion generated by the iron core, and then controlling the process of correction.

[0046] like Figure 8 As shown, the wireless ranging strain sensor 5 includes a bow-shaped rebound metal plate 51, a base 52, a containing shell 53 and a groove-shaped blocking piece 54, the groove-shaped blocking piece 54 is fixedly connected to one end surface of the containing shell 53, the base 52 is fixedly connected to the other end surface of the containing shell 53, a deformation strain gauge 57 is pasted on the concave surface of the bow-shaped rebound metal plate 51, and a telescopic rod 55 is fixedly connected to the concave surface of the bow-shaped rebound metal plate 51, the telescopic rod 55 passes through the groove-shaped blocking piece 54 and is slidably connected to the containing shell 53, and a reset spring 56 is connected between the groove-shaped blocking piece 54 and the bow-shaped rebound metal plate 51.

[0047] The bow-shaped rebound metal plate 51 is made of a light, high-strength metal with good compressive resistance, and a spiral hole is reserved at the bottom so that the telescopic rod 55 can form an integral body with the bow-shaped rebound metal plate 51. The reset spring 56 is made of a material with high rebound and fatigue resistance to adapt to high-intensity repetitive telescopic behavior. The telescopic rod 55 is made of a light, high-strength material with strong compressive resistance. The upper part of the telescopic rod 55 is a spiral protrusion, which can be connected by the spiral reserved hole at the lower part of the bow-shaped rebound metal plate 51. The root of the telescopic rod 55 is designed with a protruding cylinder, which can be blocked by the groove-shaped blocking piece 54. The housing shell 53 is made of a light, high-strength material and has a rectangular box structure. There are symmetrically arranged channels reserved inside, which can be penetrated by the telescopic rod 55 and move along the channel. The base 52 is made of a light, high-strength insulating material and has a rectangular structure. Bolt holes are symmetrically reserved on the edge of the rectangular base 52 so that it can be fixed by bolts. The deformation strain gauge 57 is adhered to the bow-shaped rebound metal plate 51, so that the deformation of the bow-shaped rebound metal plate 51 can be collected by the strain gauge. The signal receiving and processing module 61 adopts a highly sensitive structure. The module can receive the signal transmitted by the wireless ranging strain sensor 5 and process the signal, thereby triggering the built-in switch, turning on the electromagnetic circuit, and then the external power supply 8 starts to supply power. As the multi-flux coil 34 starts to work, the high-conductivity flux core 33 begins to generate mutual repulsion. The built-in switch uses a component that can rebound like a button. This structure can adapt to the correction that is relatively easy to trigger frequently, and can adapt to the needs of work very well. Bolt holes are reserved on both sides of the switch, and it is fixed to the inside of the external power supply 8 with bolts.

[0048] like Fig. 9 As shown, the electromagnetic force control system 6 includes an operation box housing 63 and a touch screen 64, the relay sliding rheostat 62 and the signal receiving and sending processing module 61 are installed in the operation box housing 63, the relay sliding rheostat 62 includes a conductive sliding rod 621, a horizontal support rod 622 and a contact pin 623, the two ends of the conductive sliding rod 621 are fixedly connected to the vertical baffle 624, the bottom of the vertical baffle 624 is fixedly connected to the bottom plate 625, the bottom plate 625 is fixed to the bottom of the operation box housing 63, the horizontal support rod 622 is located at the conductive sliding rod 621, and the vertical baffle 624 is fixedly connected to the bottom plate 625. Below the rod 621, both ends of the cross brace rod 622 are fixedly connected with a fixing plate 626, and the fixing plate 626 is fixedly connected to the bottom plate 625. A coil 627 is tightly spirally wound on the cross brace rod 622 to form a coil 627 column. One end of the contact pin 623 is fixedly connected with a slide 628, and the slide 628 is slidably connected with the conductive slide rod 621. The other end of the contact pin 623 contacts with the coil 627, and the other end of the coil 627 and one end of the conductive slide rod 621 are connected to the electromagnetic circuit of the first electromagnetic structure 3.

[0049] Specifically, the adjustment of resistance is controlled by the turns of the coil 627 on the sliding rheostat. The more turns of the coil 627 that form a loop between the contact pin 623 and the initial position of the bottom power supply, the greater the resistance will be. A push-pull rod is provided inside the conductive sliding rod 621, and the push-pull rod has a module for sensing the size of the resistance. The push-pull rod is an electric push rod, and the module is connected to the touch screen 63, so that the touch screen 63 displays the real-time resistance number, which is convenient for the staff to adjust the resistance according to the resistance number on the touch screen 63. After receiving the resistance adjustment signal, the push-pull rod can push the slider 628 to slide along the conductive sliding rod 621, and the contact position between the contact pin 623 and the coil 627 is changed to realize the change of the turns of the coil 627, thereby realizing the adjustment of the resistance size of the sliding rheostat.

[0050] The operating box housing 63 is made of high-strength and light-weight insulating board. The operating box housing 63 has the advantages of high strength, good elastic-plastic properties, easy assembly and good integration after assembly, good corrosion resistance, and good insulation performance. In addition, wire holes, power supply 8 sockets, and an operating box door that can be opened are reserved at specific locations of the operating box housing 63, and the operating box door is fixed to the outside of the assembled wire box through a rotatable shaft.

[0051] The touch screen 64 is made of an integrated liquid crystal material, has a light weight, high image pixel and clarity, and a high resolution. In addition, the display screen contains a touch recognition unit, which can overcome the shortcomings of poor real-time feedback of traditional display screens, and the feedback time of data transmission is short, which is suitable for the push construction operation with fast parameter changes. The touch screen 64 is fixed by a reserved card slot, thereby forming a connection with the assembly line box. It is connected to the signal receiving and sending processing module 61 through a built-in wire.

[0052] The signal receiving and transmitting processing module 61 adopts an automatic receiving and transmitting signal sensing chip, which can receive the signal transmitted from the wireless ranging strain sensor 5 in real time. At the same time, it contains a high-precision and fast computing unit inside, which calculates and processes the signal of the wireless ranging strain sensor 5 and timely feeds back the processed data. The feedback signal is not only transmitted to the subsequent processing module of the wireless ranging strain sensor, but also can be received by the internal processor of the touch display screen 64, so as to complete the control of the current through the relay sliding rheostat 62, and then control the magnitude of the electromagnetic force. The signal receiving and transmitting processing module 61 has a reserved wire hole, which can be connected to the wires extending from other components.

[0053] Its working principle is: the main body of the pressure-bearing slider 2 drives the entire bridge system to perform jacking operations through the steel strands. During the operation, if the bridge is offset, the first electromagnetic structure 3 and the second electromagnetic structure 4 on the offset side of the sliding platform 1 approach each other, and the wireless ranging strain sensor 5 feeds back the offset distance to the signal receiving and transmitting processing module 61. The signal receiving and transmitting processing module 61 drives the switch of the electromagnetic circuit, so that the first electromagnetic structure 3 and the second electromagnetic structure 4 generate mutual repulsion to correct the deviation.

[0054] The advantages are: the wireless ranging strain sensor 5 can accurately monitor the top-pushing deviation of the bridge, and transmit the deviation signal to the signal receiving and sending processing module 61, and the first electromagnetic structure 3 and the second electromagnetic structure 4 are arranged and distributed to cooperate with each other to use the principle of electromagnetic repulsion, so that the pressure-bearing slider 2 can be corrected in time when a deviation occurs, and the correction function is strong, and the correction can be completed in a short time, which greatly improves the efficiency of the top-pushing construction, saves a lot of workers' operating costs, does not require the auxiliary correction of the jack, saves the cost of equipment rental, and saves a lot of labor and construction costs for the top-pushing construction. The current of the electromagnetic circuit of the first electromagnetic structure 3 is controlled by the relay sliding rheostat 62, and then the magnetic force is controlled to achieve precise control of the magnetic force, and the speed of the correction can be controlled autonomously, which can guarantee the efficiency and accuracy of the correction work to the greatest extent. The overall structure adopts an assembled structure, which is economical and environmentally friendly, and the work quality is guaranteed. It can be prefabricated in advance and assembled on site, and the assembly time is short, the construction efficiency is high, and it can be reused, which further saves costs.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A track equipment capable of automatically limiting and correcting deviation in small space jacking construction operations, characterized in that: include: Sliding platform; A pressure-bearing slider, which slides along the length direction of the sliding platform; A first electromagnetic structure, wherein the first electromagnetic structure is distributed on both sides of the sliding platform and arranged along the length direction of the sliding platform; A second electromagnetic structure, wherein two second electromagnetic structures are symmetrically arranged on both sides of the pressure-bearing slider, and the second electromagnetic structure is arranged corresponding to the first electromagnetic structure; A wireless ranging strain sensor, wherein the wireless ranging strain sensor is provided in two groups and is respectively installed on opposite sides of the first electromagnetic structure and the second electromagnetic structure; An electromagnetic force control system, the electromagnetic force control system includes a signal receiving and transmitting processing module and a relay sliding rheostat, the signal receiving and transmitting processing module wirelessly communicates with the wireless ranging strain sensor, the relay sliding rheostat is installed on the electromagnetic circuit of the first electromagnetic structure and the relay sliding rheostat is electrically connected to the signal receiving and transmitting processing module.

2. According to the small space jacking construction operation according to claim 1, the track equipment capable of automatically limiting and correcting deviation is characterized in that: The sliding platform comprises a U-shaped base frame and an insulating slide plate. The insulating slide plate is laid on the top surface of the U-shaped base frame and two sides of the insulating slide plate are fixedly connected to the U-shaped base frame through triangular supports.

3. According to the small space jacking construction operation according to claim 1, the track equipment capable of automatically limiting and correcting deviation is characterized in that: Position limiting adjustment arms are provided on both sides of the pressure-bearing sliding block, and the position limiting adjustment arms are fixedly connected to the second electromagnetic structure.

4. According to claim 3, the track equipment capable of automatically limiting and correcting deviation in small space jacking construction operation is characterized in that: The limit adjustment arm includes a vertical arm and a transverse arm, and a main cylinder is provided on the end face of one end of the transverse arm. Small cylinders are distributed around the main cylinder, and the main cylinder and the small cylinder are provided with scales along the axial direction. The main cylinder and the small cylinder are plugged into the vertical arm, and a rectangular baffle is provided on the bottom surface of the other end of the transverse arm. A rectangular limit groove is fixedly connected to the side of the pressure-bearing slider, and the rectangular baffle is plugged and fixed to the rectangular limit groove.

5. According to the track equipment capable of automatically limiting and correcting deviation in small space jacking construction operations as described in claim 1, it is characterized in that: The pressure-bearing slider is provided with a through groove along the sliding direction, and an outer limiting plate and an inner limiting plate are respectively provided at both ends of the through groove. The inner limiting plate is embedded and fixed in the port of the through groove, and the outer limiting plate is fixedly connected to the pressure-bearing slider. The outer limiting plate and the inner limiting plate are both provided with a plurality of through holes for the steel strands to pass through.

6. According to the track equipment capable of automatically limiting and correcting deviation in small space jacking construction operations as described in claim 1, it is characterized in that: The first electromagnetic structure and the second electromagnetic structure adopt the same electromagnetic structure, a power supply is installed on the second electromagnetic structure, and the first electromagnetic structure and the second electromagnetic structure on the same side of the sliding platform are symmetrically arranged.

7. According to claim 6, the track equipment capable of automatically limiting and correcting deviation in small space jacking construction operation is characterized in that: The electromagnetic structure includes an insulating outer shell frame, an insulating skeleton, a high magnetic flux core and a multi-magnetic flux coil, wherein the multi-magnetic flux coil is wound around the outside of the high magnetic flux core, the insulating skeleton is fixedly installed in the insulating outer shell and a plurality of placement cavities are provided on the insulating skeleton, the high magnetic flux core is fixed in the placement cavity and a through hole coaxial with the high magnetic flux core is opened on the side of the insulating outer shell frame.

8. The track equipment capable of automatically limiting and correcting deviation in small space jacking construction operation according to claim 7 is characterized in that: The placement cavities are distributed in two rows, each row having three placement cavities. Two rows of through holes are correspondingly opened on the side of the insulating outer shell frame, and an installation groove is provided between the two rows of through holes. The wireless ranging strain sensor is installed in the installation groove.

9. According to the track equipment capable of automatically limiting and correcting deviation in small space jacking construction work as described in claim 1, it is characterized in that: The wireless ranging strain sensor includes a bow-shaped rebound metal plate, a base, a containing shell and a groove-shaped blocking piece, wherein the groove-shaped blocking piece is fixedly connected to one end surface of the containing shell, and the base is fixedly connected to the other end surface of the containing shell. A deformation strain gauge is pasted on the concave surface of the bow-shaped rebound metal plate, and a telescopic rod is fixedly connected to the concave surface of the bow-shaped rebound metal plate, and the telescopic rod passes through the groove-shaped blocking piece and is slidably connected to the containing shell, and a reset spring is connected between the groove-shaped blocking piece and the bow-shaped rebound metal plate.

10. The track equipment capable of automatically limiting and correcting deviation in small space jacking construction operation according to claim 9 is characterized in that: The electromagnetic force control system includes an operating box shell and a touch display screen. The relay sliding rheostat and the signal receiving and processing module are all installed in the operating box shell. The relay sliding rheostat includes a conductive sliding rod, a cross brace and a contact pin. The two ends of the conductive sliding rod are fixedly connected to the vertical baffle, the bottom of the vertical baffle is fixedly connected to the bottom plate, the bottom plate is fixed to the bottom of the operating box shell, the cross brace is located below the conductive sliding rod, the two ends of the cross brace are fixedly connected to the fixing plate, the fixing plate is fixedly connected to the bottom plate, a coil is tightly spirally wound on the cross brace to form a coil column, one end of the contact pin is fixedly connected to a sliding plate, the sliding plate is slidably connected to the conductive sliding rod, the other end of the contact pin is in contact with the coil, one end of the coil and one end of the conductive sliding rod are connected to the electromagnetic circuit of the first electromagnetic structure.

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