Novel bridge jacking system

Abstract

The invention relates to the field of bridge jacking, in particular to a novel bridge jacking system which comprises a supporting beam installed on the side wall of a bridge pier. The protection beam is installed on the bottom wall of the bridge, and the supporting beam and the protection beam are oppositely arranged; the auxiliary supporting mechanism comprises a jacking box, a jack and a plurality of curtain pieces, the jacking box is arranged on the supporting beam, the jack is arranged in the jacking box, a piston rod of the jack is in sliding connection with the top wall of the jacking box, the curtain pieces are sequentially arranged in the height direction of the pier and form a curtain rolling piece, and every two adjacent curtain pieces are movably connected; the curtain piece located at the top end is connected with the abutting seat, a rolling assembly used for rolling the curtain pieces is arranged in the jacking box, a flexible part is arranged between every two adjacent curtain pieces, and curing assemblies used for hardening the flexible parts are arranged on the curtain pieces. The abutting seat is assembled at the free end of a piston rod of the jack, and the abutting seat abuts against the bottom wall of the protective beam. The anti-stamping jack has the effect that the anti-stamping capability of the jack is enhanced, so that the safety in the construction process is improved.

Description

Technical Field

[0001] The present application relates to the field of bridge jacking, and in particular to a novel bridge jacking system. Background Art

[0002] Bridge bearings are critical components connecting the bridge's superstructure and substructure. Located between the bridge and the foundation stone, their primary function is to reliably transmit the loads and deformations (displacement and rotation) borne by the superstructure to the substructure. Piers are the supporting structures of a bridge, located underwater or below ground level, supporting the weight and loads of the superstructure. While piers primarily provide support, bridge bearings are primarily responsible for controlling the transmission of force and displacement.

[0003] After long-term use, bridges experience a reduction in their load-bearing life, leading to aging of their bearings. This can lead to engineering defects such as shear deformation failure and displacement, compromising their safety. Therefore, bridge bearings need to be replaced. Before replacing bearings, the bridge is typically raised using a jacking device, the bearings are replaced, and the bridge is then returned to its original position.

[0004] The jacking device in the related art generally only lifts the bridge by hydraulic jacks to lift the two left and right beam ends of the bridge. Due to the heavy weight of the bridge, the hydraulic jacks are easily damaged by overpressure, which affects the safety of the bridge jacking construction. Summary of the Invention

[0005] In order to improve the construction safety problem during the construction process, the present application provides a new bridge jacking system.

[0006] This application provides a new bridge jacking system that adopts the following technical solutions:

[0007] A new bridge jacking system, support beams, which are used to install on the side walls of bridge piers;

[0008] Support beams, which are used to be installed on the side walls of bridge piers;

[0009] A protection beam is used to be installed on the bottom wall of the bridge, and the support beam and the protection beam are arranged opposite to each other;

[0010] An auxiliary support mechanism includes a lifting box, a jack, and several curtain pieces. The lifting box is arranged on the support beam, the cylinder of the jack is arranged in the lifting box, the piston rod of the jack is slidably connected to the top wall of the lifting box, and the curtain pieces are arranged in sequence along the height direction of the pier to form a rolling curtain member. Adjacent curtain pieces are movably connected, and the curtain piece at the top is connected to the abutment seat. A winding assembly for rolling up the curtain piece is provided in the lifting box, a flexible piece is provided between adjacent curtain pieces, and a curing assembly for hardening the flexible piece is provided on the curtain piece.

[0011] The abutment seat is assembled on the free end of the piston rod of the jack, and is used for abutting against the bottom wall of the protection beam.

[0012] Optionally, the winding assembly includes a winding motor and a winding shaft, the winding motor is arranged on the side wall of the lifting box, the drive shaft of the winding motor is coaxially fixedly connected to the winding shaft, the rolling curtain member is fixedly installed on the winding shaft, and the top wall of the lifting box is provided with a movable opening for the curtain piece to pass through.

[0013] Optionally, a first electromagnet is embedded in the side wall of the movable opening, a first permanent magnet is provided on the side wall of the curtain piece, the height of the first permanent magnet is consistent with the height of the curtain piece, and the first electromagnet is magnetically connected to the first permanent magnet.

[0014] Optionally, the flexible member is a rubber sleeve, and the rubber sleeve is arranged between opposite side walls of two adjacent curtain sheets.

[0015] Optionally, the curing component includes an electrorheological fluid layer and a power supply battery, the electrorheological fluid layer is filled in a rubber sleeve, the power supply battery is arranged in the side wall of the curtain piece, the power supply battery is energized with the electrorheological fluid layer through an electric wire, and the electrorheological fluid layer changes from liquid to solid after being energized.

[0016] Optionally, a PLC controller and a proximity switch are provided on the inner side wall of the lifting box, and detection holes are provided on the side walls of several of the curtain pieces. The detection holes of the curtain pieces are used to be arranged opposite to the proximity switches. When the proximity switch detects the detection holes, the PLC controller controls the battery to energize the electrorheological fluid layer.

[0017] Optionally, two adjacent curtain pieces are movably connected by a hinged structure, and the hinged structure consists of a top hook and a bottom hook, the top hook is arranged at one end of the curtain piece, and the bottom hook is arranged at the other end of the curtain piece, the top hook and the bottom hook of the two adjacent curtain pieces are buckled and connected to each other, and the side walls of the top hook and the bottom hook are provided with rotating openings that rotate with each other.

[0018] Optionally, a second electromagnet is embedded in the side wall of the bottom hook, and a second permanent magnet is embedded in the side wall of the top hook. When the top hook and the bottom hook are buckled together, the second electromagnet and the second permanent magnet are magnetically connected.

[0019] Optionally, the bottom wall of the abutment seat is provided with a distance sensor for detecting the distance between the abutment seat and the top wall of the lifting box, and the distance sensor is electrically connected to the PLC controller.

[0020] Optionally, the bridge jacking system is provided with at least two groups, and the two groups of the bridge jacking systems are respectively arranged on opposite side walls of the pier.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By fixing and connecting several curtain sheets to stably support the abutment seat, it helps to disperse the impact pressure of the jack piston rod, thereby helping to improve safety during the construction process;

[0023] 2. When the electrorheological fluid layer is energized, it changes from liquid to solid, which helps to strengthen the stability of the fixed connection between two adjacent curtain blades, helps to prevent the curtain blades from rotating, and helps to improve safety during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 A specific structural diagram that reflects the positional relationship between the jacking box, jack and abutment seat.

[0026] Figure 3 To reflect Figure 2 Schematic diagram of the cross-section structure in.

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0029] Explanation of the accompanying symbols: 1. Bridge pier; 2. Support beam; 3. Protection beam; 4. Jack; 5. Abutment seat; 6. Lifting box; 7. Curtain blade; 8. Winding assembly; 81. Winding motor; 82. Winding shaft; 9. Rubber sleeve; 10. Curing assembly; 101. Electrorheological fluid layer; 102. Power supply battery; 11. First electromagnet; 12. First permanent magnet; 13. PLC controller; 14. Proximity switch; 15. Detection hole; 16. Top hook; 17. Bottom hook; 18. Second electromagnet; 19. Second permanent magnet; 20. Distance sensor; 21. Third electromagnet; 22. Third permanent magnet. DETAILED DESCRIPTION

[0030] The embodiment of the present application discloses a new type of bridge jacking system. Figure 1 The bridge jacking system includes a support beam 2, a protective beam 3, an abutment seat 5 and an auxiliary support mechanism. Support beams 2 are installed on both side end walls of the piers 1 at both beam ends of the bridge. Two protective beams 3 are provided on the bottom walls of the beam ends on both sides of the bridge. The two protective beams 3 correspond one-to-one to the support beams 2 on both sides of each pier 1 and are arranged opposite to each other up and down.

[0031] Among them, the auxiliary support mechanism includes a jacking box 6 and a jack 4. The jacking box 6 is fixedly installed on the support beam 2. The jack 4 is vertically arranged on the inner bottom wall of the jacking box 6. The piston rod of the jack 4 extends out of the top wall of the jacking box 6 and is connected to the abutment seat 5. The piston rod of the jack 4 is slidingly connected to the top wall of the jacking box 6. When the bridge is lifted, the four jacks 4 under the two beam ends of the bridge are driven to operate synchronously. The jack 4 abuts the bottom wall of the protective beam 3 through the abutment block to achieve the lifting of the bridge.

[0032] Reference Figure 1-Figure 3 The top wall of the lifting box 6 is provided with a movable opening for the curtain piece 7 to pass through; the winding motor 81 is started, and the winding shaft 82 is rotated to realize the winding or unwinding of the curtain piece, and the top wall of the lifting box 6 is provided with a movable opening for the curtain piece 7 to pass through, so that the curtain piece 7 can be lifted and lowered stably.

[0033] In this embodiment, as the piston rod of the jack 4 extends, the rolling curtain piece needs to be unwound so that several curtain pieces 7 extend out of the lifting box 6 as the piston rod of the jack 4 moves, which helps to enhance the anti-punch ability of the jack 4.

[0034] Reference Figure 3-Figure 5 Since several curtain strips 7 are hingedly connected, in order to successfully disperse the impact pressure of the jack 4, a flexible part is provided between two adjacent curtain strips 7, and a curing component 10 for hardening the flexible part is provided on the curtain strip 7, which helps to prevent the curtain strip 7 from shaking.

[0035] In addition, a first electromagnet 11 is provided on the side wall of the jacking box 6 located at the movable opening, and a first permanent magnet 12 is provided on the side wall of the curtain piece 7. The height dimension of the first permanent magnet 12 is consistent with the height dimension of the curtain piece 7. When the piston rod of the jack 4 is extended to the appropriate position, the first electromagnet 11 is energized, and then the first permanent magnet 12 is magnetically adsorbed and fixed to the first electromagnet 11, so that the curtain piece 7 in the movable opening is fixed in the movable opening. At this time, the supporting force on the abutment seat 5 is dispersed by extending several curtain pieces 7 out of the top wall of the jacking box 6, which helps to reduce the compressive resistance of the jack 4, thereby improving construction safety.

[0036] Reference Figure 4 and Figure 5The flexible member is a rubber sleeve 9, positioned between the opposing sidewalls of two adjacent curtain slats 7. The curing assembly 10 includes an electrorheological fluid layer 101 and a power supply cell 102. The electrorheological fluid layer 101 is filled within the rubber sleeve 9, while the power supply cell 102 is positioned within the sidewalls of the curtain slats 7. The power supply cell 102 is electrically connected to the electrorheological fluid layer 101 via a wire. Upon energization, the electrorheological fluid layer 101 transforms from a liquid to a solid state, thereby enhancing the rubber sleeve 9's resistance to impact and preventing rotation between the two curtain slats 7. The electrorheological fluid layer 101 in this embodiment comprises a cavity defined within the rubber sleeve 9, which is filled with an electrorheological fluid. Under normal conditions, the electrorheological fluid is a suspension that undergoes a liquid-to-solid transition under the influence of an electric field. When the applied electric field strength is significantly below a critical value, the electrorheological fluid is liquid; when the electric field strength is significantly above this critical value, it transforms into a solid state.

[0037] The top and bottom walls of the rubber sleeve 9 are both provided with third permanent magnets 22 , and the top and bottom walls of the curtain pieces 7 are both provided with third electromagnets 21 . The battery 102 can power the third electromagnets 21 so that the rubber sleeve 9 is magnetically adsorbed between two adjacent curtain pieces 7 .

[0038] It should be noted that, in this embodiment, the power supplied to the electrorheological fluid layer 101 by the power supply battery 102 can be transmitted to the electrorheological fluid layer 101 through the third electromagnet 21 and the wire.

[0039] Reference Figure 3-Figure 4 A PLC controller 13 is provided on the inner side wall of the lifting box 6, and a proximity switch 14 is provided on the inner top wall of the lifting box 6 and located on the side of the movable opening. A detection hole 15 is provided on the side wall of each curtain piece 7, and the detection hole 15 of the curtain piece 7 can be arranged opposite to the proximity switch 14. When the piston rod of the jack 4 is extended to the preset height range, the PLC controller 13 starts the proximity switch 14 of the jack 4 to emit a light source to the passing curtain piece 7, and the PLC controller 13 can record the number of each passing curtain piece 7. Once the piston rod of the jack 4 moves to the preset optimal height, the PLC controller 13 can find the last recorded curtain piece 7 and simultaneously start the power supply battery 102 in the curtain piece 7 to realize the power supply of the electrorheological fluid layer 101, so that the electrorheological fluid layer 101 is solidified, thereby enhancing the anti-punching ability of the rubber sleeve 9.

[0040] Reference Figure 3A distance sensor 20 is provided on the bottom wall of the abutment seat 5 so that as the jack 4 moves, the distance between the abutment seat 5 and the top wall of the jacking box 6 is detected in real time through the distance sensor 20, and the distance is fed back to the PLC controller 13, so that the PLC controller 13 can obtain the actual height value of the extended piston rod of the jack 4 in real time, so that the PLC controller 13 can judge in real time whether the actual height value is within the preset height range, which helps to improve the accuracy of judging the number of the corresponding curtain piece 7 in the movable opening when the jack 4 is lifted. By strengthening the stability of the fixed connection between the two curtain pieces 7, the bearing capacity of the jack 4 is dispersed, which helps to improve the safety of the construction process.

[0041] Reference Figure 3-Figure 5 In this embodiment, two adjacent curtain pieces 7 are movably connected by a hinge structure. The hinge structure specifically includes a top hook 16 and a bottom hook 17. The top hook 16 is arranged at the top or bottom end of the curtain piece 7, and the bottom hook 17 is arranged at the bottom or top end of the curtain piece 7. The top hook 16 and the bottom hook 17 of the two adjacent curtain pieces 7 are buckled and connected with each other, and the side walls of the top hook 16 and the bottom hook 17 are provided with rotating openings that rotate with each other.

[0042] Reference Figure 5 In order to further improve the stability of the fixed connection between the two adjacent curtain sheets 7, a second electromagnet 18 is embedded in the side wall of the bottom hook 17, and a second permanent magnet 19 is embedded in the side wall of the top hook 16. By connecting the power to the second electromagnet 18, the second permanent magnet 19 and the second electromagnet 18 are magnetically connected, so that the top hook 16 and the bottom hook 17 are fixedly connected.

[0043] Correspondingly, the power supply battery 102 in the curtain piece 7 can supply power to the second electromagnet 18, and the second electromagnet 18 is electrically connected to the PLC controller 13. When the height of the piston rod of the jack 4 reaches the optimal height, the PLC controller 13 controls the power supply battery 102 to supply power to the second electromagnet 18, so that the second permanent magnet 19 is magnetically attracted and connected to the second electromagnet 18. At this time, the top hook 16 and the bottom hook 17 cannot rotate, and finally a fixed connection between the two curtain pieces 7 is achieved.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A new type of bridge jacking system, characterized in that: The jacking system includes: A support beam (2) for mounting on the side wall of the pier (1); A protection beam (3) is used for installation on the bottom wall of the bridge, wherein the support beam (2) and the protection beam (3) are arranged opposite to each other; An auxiliary support mechanism comprises a lifting box (6), a jack (4) and a plurality of curtain pieces (7); the lifting box (6) is arranged on a support beam (2); a cylinder of the jack (4) is arranged in the lifting box (6); a piston rod of the jack (4) is slidably connected to a top wall of the lifting box (6); a plurality of curtain pieces (7) are sequentially arranged along the height direction of the pier (1) and constitute a rolling curtain piece; two adjacent curtain pieces (7) are movably connected; the curtain piece (7) at the top is connected to an abutment seat (5); a winding assembly (8) for rolling up the curtain piece (7) is provided in the lifting box (6); a flexible piece is provided between two adjacent curtain pieces (7); and a curing assembly (10) for curing the flexible piece is provided on the curtain piece (7); An abutment seat (5) is assembled on the free end of the piston rod of the jack (4), and the abutment seat (5) is used to abut against the bottom wall of the protection beam (3).

2. The novel bridge jacking system according to claim 1 is characterized in that: The winding assembly (8) comprises a winding motor (81) and a winding shaft (82); the winding motor (81) is arranged on the side wall of the lifting box (6); the driving shaft of the winding motor (81) is coaxially fixedly connected to the winding shaft (82); the rolling curtain member is fixedly mounted on the winding shaft (82); and the top wall of the lifting box (6) is provided with a movable opening for the curtain sheet (7) to pass through.

3. The novel bridge jacking system according to claim 2 is characterized in that: A first electromagnet (11) is embedded in the side wall of the movable opening, and a first permanent magnet (12) is provided on the side wall of the curtain piece (7). The height of the first permanent magnet (12) is consistent with the height of the curtain piece (7), and the first electromagnet (11) is magnetically connected to the first permanent magnet (12).

4. The novel bridge jacking system according to claim 1 is characterized in that: The flexible member is a rubber sleeve (9), and the rubber sleeve (9) is arranged between the opposite side walls of two adjacent curtain sheets (7).

5. The novel bridge jacking system according to claim 4 is characterized in that: The curing assembly (10) comprises an electrorheological fluid layer (101) and a power supply battery (102), wherein the electrorheological fluid layer (101) is filled in a rubber sleeve (9), and the power supply battery (102) is arranged in a side wall of a curtain sheet (7). The power supply battery (102) is energized with the electrorheological fluid layer (101) via an electric wire, and the electrorheological fluid layer (101) changes from a liquid state to a solid state after being energized.

6. The novel bridge jacking system according to claim 5 is characterized in that: The inner side wall of the lifting box (6) is provided with a PLC controller (13) and a proximity switch (14); the side walls of the plurality of curtain pieces (7) are provided with detection holes (15); the detection holes (15) of the curtain pieces (7) are used to be arranged opposite to the proximity switches (14); when the proximity switches (14) detect the detection holes (15), the PLC controller (13) controls the power supply battery (102) to energize the electrorheological fluid layer (101).

7. The novel bridge jacking system according to claim 1 is characterized in that: Two adjacent curtain pieces (7) are movably connected via a hinge structure, wherein the hinge structure comprises a top hook (16) and a bottom hook (17), wherein the top hook (16) is arranged at one end of the curtain piece (7), and the bottom hook (17) is arranged at the other end of the curtain piece (7), and the top hook (16) and the bottom hook (17) of the two adjacent curtain pieces (7) are buckled and connected to each other, and the side walls of the top hook (16) and the bottom hook (17) are provided with rotating openings that rotate with each other.

8. The novel bridge jacking system according to claim 7 is characterized in that: A second electromagnet (18) is embedded in the side wall of the bottom hook (17), and a second permanent magnet (19) is embedded in the side wall of the top hook (16). When the top hook (16) and the bottom hook (17) are buckled and connected, the second electromagnet (18) and the second permanent magnet (19) are magnetically connected.

9. The novel bridge jacking system according to claim 6 is characterized in that: The bottom wall of the abutment seat (5) is provided with a distance sensor (20) for detecting the distance between the abutment seat (5) and the top wall of the lifting box (6), and the distance sensor (20) is electrically connected to the PLC controller (13).

10. The novel bridge jacking system according to claim 1 is characterized in that: The bridge jacking system is provided with at least two groups, and the two groups of the bridge jacking systems are respectively arranged on opposite side walls of the pier (1).

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