Jacking device for bridge reinforcement and construction method thereof

Abstract

The invention relates to the technical field of bridge jacking equipment, in particular to a jacking device for bridge reinforcement, which comprises a base, a supporting jacking device, a positioning jacking device and a dismounting device which are sequentially arranged from bottom to top, and the supporting jacking device and the positioning jacking device are matched with each other to realize the positioning and jacking effects on a bridge. Compared with an existing mode that a plurality of hydraulic jacks are arranged, tedious early-stage preparation work is not needed, after jacking is completed, a part responsible for jacking does not need to be self-locked through a manual operation mode of a worker, the construction complexity is effectively reduced, bolts on the bridge support are disassembled through the disassembling device, and the construction efficiency is improved. The bolts, opposite in pairs, on the upper support plate and the lower support plate can be quickly disassembled at the same time, compared with an existing mode that the bolts are disassembled one by one through manpower, the bridge support is more convenient to use, and therefore the replacement efficiency of the bridge support is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge jacking equipment, and in particular to a jacking device for bridge reinforcement and a construction method thereof. Background Art

[0002] Bridges are a special type of reliable, safe and smooth road. The construction of bridges plays an important role in promoting regional economic development. At present, the traffic flow on many bridges has far exceeded the expected flow during design, which has caused the bridge bearings to be overloaded for a long time, resulting in a greatly shortened service life of the bridge bearings. At this time, construction workers need to promptly perform irregular maintenance or replacement of the bridge bearings.

[0003] In the process of replacing the bridge bearings, it is necessary to use bridge jacking equipment to lift the entire bridge deck a certain distance. In the current jacking method, the original cast-in-place piles are generally used for load-bearing, and a number of hydraulic jacks are arranged on the cast-in-place piles to lift the bridge deck.

[0004] First of all, workers need to accurately arrange the hydraulic jacks before construction, keeping them equidistant or placing them according to a specific pattern. During this process, multiple layers of steel plates will be stacked on the top and bottom of each jack to ensure the stability of the structure. After the jacking is completed, the workers also need to self-lock each hydraulic jack to ensure the stability and safety of the equipment. However, the complexity of this series of steps increases the need for manual adjustment. After placing the hydraulic jacks, the workers also need to connect each hydraulic jack to the jacking system on the ground. Before connecting, the connection ports of the hydraulic jacks need to be cleaned one by one, and hoses of sufficient length need to be laid. This series of preparations not only increases the difficulty of the project, but also affects the construction progress.

[0005] In addition, during the process of replacing the bridge bearings, the workers need to remove the bolts one by one manually. This manual operation method not only greatly reduces the efficiency of bridge bearing removal, but also further slows down the entire construction progress, making it cumbersome and lengthy.

[0006] Therefore, it is necessary to provide a jacking device that can quickly jack up the bridge deck and quickly disassemble the bolts on the bridge bearings. Summary of the invention

[0007] An object of the present invention is to provide a jacking device for bridge reinforcement and a construction method thereof, so as to solve the problems raised in the background technology.

[0008] To achieve the above-mentioned purpose, an embodiment of the present invention provides a jacking device for bridge reinforcement, comprising a base, a supporting jacking device and a disassembly device arranged in sequence from bottom to top;

[0009] The supporting lifting device comprises: a first supporting member rotatably connected to the base and a second supporting member with a mounting groove on the bottom, the outer surface of the first supporting member is provided with a first thread; the mounting groove is provided with a second thread matching the first thread, and the second supporting member is threadedly sleeved on the first supporting member;

[0010] The disassembly device comprises: a positioning electric telescopic rod symmetrically arranged on the second support member, a plurality of electric sleeve driving devices are installed at the free end of the positioning electric telescopic rod, and a sleeve is installed on the output end of each electric sleeve driving device;

[0011] A driving motor is arranged in the base, and an output end of the driving motor passes through the base and is fixedly connected to the bottom of the first supporting member; a lifting steel plate is arranged on the top of the second supporting member.

[0012] Furthermore, the supporting jacking device also includes N limiting rods located at the bottom of the second supporting member and fixed to the base, and a plurality of limiting holes corresponding to the limiting rods are opened on the bottom of the second supporting member, and each limiting rod is inserted into a corresponding limiting hole; N is greater than or equal to 1;

[0013] The second support member is provided with a plurality of limiting parts corresponding to each limiting rod, each limiting part comprises a first limiting member fixedly connected to the bottom of the second support member, a first limiting groove is horizontally opened on the first limiting member, a second limiting member is passed through the first limiting groove, and each limiting rod is vertically provided with a plurality of positioning holes matched with the second limiting member.

[0014] Furthermore, a second limiting groove is provided in the first limiting groove, a second limiting member is sleeved on the outer surface of the second limiting groove and fixedly connected to the limiting plate, a limiting spring sleeved on the second limiting member is provided in the second limiting groove, and the limiting spring is provided between one end of the second limiting groove away from the second support member and the limiting plate;

[0015] An end of the first limiting member away from the second supporting member is fixedly connected to a third limiting member in a U-shaped shape, an opening of the third limiting member is arranged opposite to the first limiting groove, an electromagnet is arranged in the space surrounded by the third limiting member, and a magnetic block is installed at the end of the second limiting member opposite to the electromagnet.

[0016] Further, the bridge reinforcement jacking device also includes a positioning jacking device, which includes M positioning grooves opened on the side wall of the second support member, and a storage groove is opened on the base at a position corresponding to each positioning groove, and a single-sided chain rod is fixedly connected in each positioning groove, and each single-sided chain rod extends into the corresponding storage groove. A C-shaped positioning block is respectively sleeved and fixedly connected on each chain rod joint of the single-sided chain rod, and an L-shaped sliding groove is respectively opened at the front end of the two side walls of each positioning block; M is greater than or equal to 2;

[0017] The positioning and lifting device also includes a plurality of conveying plates corresponding to each single-sided chain rod, a pair of sliders are fixedly connected to the bottom of each conveying plate, each pair of sliders are slidably connected to the slide grooves on both sides of the corresponding positioning block, one of the sliders in each pair of sliders is fixedly connected to a conveying motor, the transmission shaft of the conveying motor passes through the fixed slider and is rotatably connected to the other slider, and a driving gear that meshes with the single-sided chain rod is sleeved and fixedly connected on the transmission shaft of the motor.

[0018] Furthermore, the positioning and lifting device also includes a positioning portion provided on the second support member, the positioning portion and the second support member are connected via a plurality of lifting hydraulic rods, a through slot is provided on the positioning portion, a plurality of first fixing slots are provided on the side wall of the through slot, and a hydraulic telescopic rod is installed in each first fixing slot;

[0019] The bridge reinforcement lifting device comprises a plurality of pads, each of which is provided with a plurality of second fixing grooves adapted to the hydraulic telescopic rods, a plurality of plugging rods are fixedly connected to the top of each pad, and a plurality of slots corresponding to each plugging rod are provided at the bottom of each pad;

[0020] A placement groove is provided on each positioning portion, the placement groove is coaxially arranged with the through groove, and the lifting steel plate is arranged in the placement groove.

[0021] Furthermore, each conveying plate is provided with Y electric push rods, and a plurality of multi-stage telescopic mechanisms corresponding to each conveying plate are installed on the second support member. A U-shaped guide plate is fixedly connected to the free end of each multi-stage telescopic mechanism, and the space surrounded by the guide plate is adapted to the pad; Y is greater than or equal to 1.

[0022] Furthermore, a T-shaped positioning plate is fixedly connected to the free end of the positioning electric telescopic rod, the vertical arm of the positioning plate is fixedly connected to the positioning electric telescopic rod, and two multi-section electric telescopic rods are fixedly connected to the horizontal arm, and a double-headed pneumatic rod is respectively installed on each section of each multi-section electric telescopic rod, and an electric sleeve driving device is respectively installed on the two output ends of each double-headed pneumatic rod;

[0023] An air pump connected to the double-headed pneumatic rods is installed on the second supporting member.

[0024] Furthermore, a first laser locator is installed on the inner rod of the positioning electric telescopic rod, and a second laser locator is provided on each inner rod of the multi-section electric telescopic rod; the output direction of the first laser locator is parallel to the direction of the multi-section electric telescopic rod, and the output direction of the second laser locator is set at an angle to the output direction of the electric sleeve drive device.

[0025] Furthermore, the jacking device for bridge reinforcement also includes a remote controller, a signal transmitter connected to the remote controller, and a battery, a controller and a signal receiver installed in the base. The battery and the controller are electrically connected to the drive motor, the electromagnet, the positioning electric telescopic rod, the conveying motor, the hydraulic telescopic rod, the air pump, the multi-stage telescopic mechanism, the first laser locator, the second laser locator, the electric sleeve drive device and the electric push rod, respectively, and the battery, the controller and the signal receiver are electrically connected to each other.

[0026] A construction method of a jacking device for bridge reinforcement comprises the following steps:

[0027] Step 1: Move the lifting device to the predetermined position under the bridge. After the position is confirmed and fixed, energize the electromagnet. At this time, the second limiter moves toward the electromagnet, and then start the drive motor until the positioning electric telescopic rod in the disassembly device is flush with the position of the bridge support. At this time, the electromagnet is powered off, and the second limiter is inserted into the positioning hole on the same horizontal plane under the action of the limit spring;

[0028] Step 2: Turn on the first laser locator, start the disassembly device, align the center of the locating plate with the bridge support by extending the electric telescopic rod outward, then turn on the second laser locator and start the multi-section electric telescopic rod to align the double-headed pneumatic rod on each section with the bolt on the bridge support;

[0029] Step 3: The double-headed pneumatic rod is extended to allow the sleeve on the electric sleeve driving device to be sleeved on the corresponding bolt, and then the electric sleeve driving device is started to remove the bolt on the bridge support;

[0030] Step 4: After the bolts are removed, first retract the double-headed pneumatic rod to the minimum extension position, and then retract the multi-section electric telescopic rod to the minimum extension position. After the retraction is completed, the electric telescopic rod is positioned to continue to extend outward, and the position of the next bridge support is located by the first laser locator, and the above steps 2 and 3 are repeated;

[0031] Step 5: After all the bolts on the bridge supports are removed, the double-headed pneumatic rod is retracted to the minimum extension position, and then the multi-section electric telescopic rod is retracted to the minimum extension position, and finally the positioning electric telescopic rod is retracted to the minimum extension position;

[0032] Step 6: Start the positioning and lifting device, transport several pads one by one to the second support member and arrange them, so as to lift the bridge deck. After the bridge is lifted, start the maintenance or replacement of the bridge bearings;

[0033] Step 7: After the inspection or replacement is completed, the positioning part and the lifting hydraulic rod cooperate with each other to lift the pad on the second support member except the lowest pad, and then the lowest pad is pushed by the multi-stage telescopic mechanism until it is moved out;

[0034] Step 8. Repeat the operation of step 7 above until the pad is completely removed. Finally, energize the electromagnet to move the second limit member out of the positioning hole. Then start the drive motor again to drive the first support member to reverse, thereby realizing the downward movement of the second support member, thereby completing the recovery operation of the jacking device for bridge reinforcement.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. Through the mutual cooperation between the supporting jacking device and the positioning jacking device, the positioning and jacking effects of the bridge are respectively achieved. Compared with the existing method of setting up a number of hydraulic jacks, the jacking equipment used in the present invention does not require tedious preliminary preparation work. At the same time, after the jacking is completed, there is no need for the staff to manually operate the part responsible for the jacking to self-lock, thereby effectively improving work efficiency, reducing the complexity of construction, and reducing the need for manual adjustment.

[0037] 2. The bolts used for fixing the bridge bearings are removed by means of a disassembly device. The bolts opposite to each other on the upper and lower bearing plates can be quickly disassembled at the same time through the cooperation between the double-headed pneumatic rod and the electric sleeve drive device. Compared with the existing method of disassembling one by one by manpower, it is more convenient, thereby improving the replacement efficiency of the bridge bearings.

[0038] 3. Through the positioning jacking device, the staff only needs to place the pads one by one on the conveying plate on the ground and transport them through the conveying plate. At the same time, the pads are moved to the required position on the second support member through the electric push rod, and the pads transported to the second support member are arranged through the positioning part, thereby replacing human transportation and improving the stability of the bridge deck during the jacking process, thereby improving the jacking efficiency and ensuring the personal safety of the staff;

[0039] 4. After completing the inspection or replacement of the bridge support, the pads are dismantled one by one through the cooperation between the multi-section electric telescopic rod and the positioning part, and through the cooperation between the single-sided chain rod and its corresponding parts, the pads still do not require manual participation during the removal and transportation process, and also avoid the problem of difficulty in manual disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the main structure of an embodiment of the present invention is shown;

[0041] Figure 2 In one embodiment of the present invention Figure 1 A magnified image of point A;

[0042] Figure 3 In one embodiment of the present invention Figure 1 A magnified view of point B;

[0043] Figure 4 In one embodiment of the present invention Figure 1 Enlarged view of point C;

[0044] Figure 5 In one embodiment of the present invention Figure 1 The enlarged view of point D;

[0045] Figure 6 A front view of a base according to an embodiment of the present invention;

[0046] Figure 7 It is a front view of a single-side chain rod according to an embodiment of the present invention;

[0047] Figure 8 It is a schematic diagram of the cooperation between the chain link and the positioning block of a single-side chain rod according to an embodiment of the present invention;

[0048] Fig. 9 A schematic structural diagram of a cushion block according to an embodiment of the present invention;

[0049] Fig.10 A schematic diagram of the internal structure of a limiting portion according to an embodiment of the present invention;

[0050] Fig.11 The figure is a schematic structural diagram of a multi-stage telescopic mechanism according to an embodiment of the present invention.

[0051] in, Figures 1 to 11 The corresponding relationship between the reference numerals and the component names is as follows:

[0052] 100, base; 101, storage slot; 200, support jacking device; 201, first support member; 202, second support member; 203, drive motor; 204, limit rod; 205, first limit member; 206, second limit member; 207, first limit slot; 208, second limit slot; 209, limit plate; 210, limit spring; 211, third limit member; 212, electromagnet; 213, magnetic block; 214, positioning hole; 300, positioning jacking device; 301, positioning slot; 302, single-side chain rod; 303, positioning block; 304, slide; 305, conveyor Plate; 306, slider; 307, conveying motor; 308, driving gear; 309, positioning part; 310, lifting hydraulic rod; 311, through slot; 312, first fixed slot; 313, hydraulic telescopic rod; 314, cushion block; 315, second fixed slot; 316, plug rod; 317, slot; 318, lifting steel plate; 319, electric push rod; 320, multi-stage telescopic mechanism; 321, guide plate; 400, disassembly device; 401, positioning electric telescopic rod; 402, electric sleeve driving device; 403, positioning plate; 404, multi-section electric telescopic rod; 405, double-headed pneumatic rod. DETAILED DESCRIPTION

[0053] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0054] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0055] Refer to the following Figures 1 to 11 Some embodiments according to the invention are described.

[0056] like Figure 1 and Fig.11 As shown, this embodiment provides a jacking device for bridge reinforcement and a construction method thereof, comprising a base 100, a supporting jacking device 200 and a disassembly device 400 arranged in sequence from bottom to top;

[0057] The supporting lifting device 200 includes: a first supporting member 201 rotatably connected to the base 100 and a second supporting member 202 with a mounting groove on the bottom, the first supporting member 201 has a first thread on its outer surface; the mounting groove has a second thread matching the first thread, and the second supporting member 202 is threadedly sleeved on the first supporting member 201;

[0058] The disassembly device 400 includes: a positioning electric telescopic rod 401 symmetrically arranged on the second support member 202, a plurality of electric sleeve driving devices 402 are installed at the free end of the positioning electric telescopic rod 401, and a sleeve is installed at the output end of each electric sleeve driving device 402;

[0059] A driving motor 203 is disposed in the base 100 , and an output end of the driving motor 203 passes through the base 100 and is fixedly connected to the bottom of the first supporting member 201 ; a lifting steel plate 318 is disposed on the top of the second supporting member 202 .

[0060] In one embodiment, tires for movement and a driving device for driving the tires can be added to the bottom of the base 100 to provide power for the bridge reinforcement jacking device.

[0061] In one embodiment, a plurality of jacking hydraulic rods 310 may be evenly spaced on the connecting shaft of the tire. When the jacking hydraulic rods 310 are retracted to the minimum extension position, the bottom of the base 100 may contact the ground, thereby increasing the contact area with the ground and improving the stability of the equipment.

[0062] In one embodiment, the mounting groove is adapted to the shape of the first support member 201 , so as to reduce the vibration generated by the bridge reinforcement jacking device during operation.

[0063] In one embodiment, the first support member 201 and the mounting groove are preferably cylindrical; the second support member 202 is preferably rectangular, so as to improve the transmission efficiency.

[0064] In one embodiment, the disassembly device 400 is symmetrically arranged on both sides of the second support member 202, and is located at the top of the second support member 202 near the rear side or at the rear side of the second support member 202 near the top, so as to facilitate the subsequent disassembly of the bolts.

[0065] In one embodiment, the supporting lifting device 200 also includes N limiting rods 204 located at the bottom of the second supporting member 202 and fixedly connected to the base 100. A plurality of limiting holes corresponding to the limiting rods 204 are opened on the bottom of the second supporting member 202, and each limiting rod 204 is inserted into the corresponding limiting hole; N is greater than or equal to 1.

[0066] When the driving motor 203 drives the first supporting member 201 to rotate, the limiting hole and the limiting rod 204 cooperate with each other to limit the second supporting member 202 to prevent it from rotating together with the first supporting member 201 .

[0067] In one embodiment, the drive motor 203 can be a stepper motor. In this way, it is ensured that after the second support member 202 is lifted to the required position, the first support member 201 will not rotate due to the downward pressure of its own weight.

[0068] In one embodiment, in order to better achieve the stable effect of the second support member 202 after lifting, a number of limiting parts corresponding to each limiting rod 204 are installed on the second support member 202. Each limiting part respectively includes a first limiting member 205 fixedly connected to the bottom of the second support member 202. A first limiting groove 207 is horizontally formed on the first limiting member 205. A second limiting member 206 is穿设在 the first limiting groove 207. A number of positioning holes 214 adapted to the second limiting member 206 are vertically formed on each limiting rod 204.

[0069] In one embodiment, a second limiting groove 208 is formed in the first limiting groove 207. A limiting plate 209 is sleeved and fixedly connected to the outer surface of the second limiting member 206 located in the second limiting groove 208. A limiting spring 210 sleeved on the second limiting member 206 is arranged in the second limiting groove 208. The limiting spring 210 is arranged between the end of the second limiting groove 208 far from the second support member 202 and the limiting plate 209. A U-shaped third limiting member 211 is fixedly connected to the end of the first limiting member 205 far from the second support member 202. The opening of the third limiting member 211 is oppositely arranged with the first limiting groove 207. An electromagnet 212 is arranged in the space surrounded by the third limiting member 211. A magnetic block 213 is installed at the end of the second limiting member 206 opposite to the electromagnet 212.

[0070] Before the jacking device for bridge reinforcement is put into use, it is first moved to a preset position. When starting to jack, the electromagnet 212 is powered on. After being powered on, the electromagnet 212 adsorbs the magnetic block. The magnetic block pulls the second limiting member 206 connected thereto to move backward. At this time, the front end of the second limiting member 206 is far from the positioning hole 214 on the limiting rod 204. At the same time, the drive motor 203 is powered on and started. The first support member 201 rotates to drive the second support member 202 to jack. When the second support member 202 is jacked to the required position, the drive motor 203 stops rotating and enters the idle state. At the same time, the electromagnet 212 is powered off. Under the action of the limiting spring 210, the second limiting member 206 moves along the straight direction of the first limiting groove 207 and inserts into a certain positioning hole 214 on the limiting rod 204, so as to further limit the second support member 202.

[0071] In one embodiment, the limiting rods 204 are circumferentially and equidistantly arranged with the first support member 201 as the center.

[0072] In one embodiment, the number of the limiting rods 204 and the single-sided chain rods 302 is preferably 2, and the two limiting rods 204 are respectively arranged at the front and rear sides of the second support member 202; the two single-sided chain rods 302 are respectively arranged at the left and right sides of the second support member 202.

[0073] In one embodiment, a receiving groove adapted to the electromagnet 212 is formed on the top of the inner wall of the third limiting member 211 , and the electromagnet 212 is installed in the receiving groove.

[0074] In one embodiment, the second support member 202 moves to a desired position where the lifting steel plate 318 on the second support member 202 contacts the bottom of the bridge deck.

[0075] In one embodiment, the bridge reinforcement lifting device also includes a positioning lifting device 300, which includes M positioning slots 301 opened on the side wall of the second support member 202, and the base 100 is provided with a storage slot 101 at a position corresponding to each positioning slot 301, and each positioning slot 301 is fixed with a single-sided chain rod 302, and each single-sided chain rod 302 extends into the corresponding storage slot 101, and each chain rod joint of the single-sided chain rod 302 is respectively sleeved and fixed with a C-shaped positioning block 303, and each two side wall front end of each positioning block 303 is respectively provided with an L-shaped sliding Slot 304; M is greater than or equal to 2; the positioning and lifting device 300 also includes a plurality of conveying plates 305 corresponding to each single-sided chain rod 302, and a pair of sliders 306 are fixedly connected to the bottom of each conveying plate 305, and each pair of sliders 306 are respectively slidably connected to the slide grooves 304 on both sides of the corresponding positioning block 303, and a conveying motor 307 is fixedly connected to one of the sliders 306 in each pair of sliders 306, and the transmission shaft of the conveying motor 307 passes through the fixed slider 306 and is rotatably connected to the other slider 306, and a driving gear 308 meshing with the single-sided chain rod 302 is sleeved and fixedly connected on the transmission shaft of the motor.

[0076] In one embodiment, the positioning and lifting device 300 also includes a positioning portion 309 arranged on the second support member 202, the positioning portion 309 and the second support member 202 are connected by a plurality of lifting hydraulic rods 310, a through slot 311 is provided on the positioning portion 309, a plurality of first fixed slots 312 are provided on the side wall of the through slot 311, and a hydraulic telescopic rod 313 is installed in each first fixed slot 312; the lifting device for strengthening the bridge includes a plurality of pads 314, each pad 314 is provided with a plurality of second fixed slots 315 adapted to the hydraulic telescopic rod 313, a plurality of plug rods 316 are fixedly connected to the top of each pad 314, and a plurality of slots 317 corresponding to each plug rod 316 are provided at the bottom of each pad 314; a placement slot is provided on each positioning portion 309, the placement slot is coaxially arranged with the through slot 311, and a lifting steel plate 318 is provided in the placement slot.

[0077] Each conveying plate 305 is provided with Y electric push rods 319, and a plurality of multi-stage telescopic mechanisms 320 corresponding to each conveying plate 305 are installed on the second support member 202. A U-shaped guide plate 321 is fixedly connected to the free end of each multi-stage telescopic mechanism 320, and the space surrounded by the guide plate 321 is adapted to the pad 314; Y is greater than or equal to 1.

[0078] During the lifting process of the second support member 202, the single-side chain rod 302 is gradually moved out of the storage groove 101 driven by the second support member 202, and is in a vertical style under its own structure and the moving direction of the second support member 202. When the second support member 202 is lifted to the required position and the second stopper 206 is inserted into the positioning hole 214, the staff will then place the cushion block 314 on the conveying plate 305, and after the placement is completed, the conveying motor 307 is started. Under the cooperation of the driving gear 308 and the inner chain link of the single-side chain rod 302, the conveying plate 305 drives the cushion block 314 to move vertically upward until the cushion block 314 is moved to the top position of the second support member 202. Then the conveying motor 307 stops rotating and enters the standby state, so as to ensure that the conveying plate 305 will not slide down due to the weight of the cushion block 314. At this time, the electric push rod 319 starts to work, pushing the cushion block 314 from the conveying plate 305 to the upper surface of the second support member 202 until the cushion block 314 enters the space surrounded by the guide plate 321. Then the lifting hydraulic rod 310 is recovered, and the lifting part moves down to the position of the cushion block 314. At this time, the hydraulic telescopic rod 313 is extended and inserted into the second fixing groove 315 on the side wall of the cushion block 314.

[0079] In one embodiment, the hydraulic telescopic rod 313 is a rectangular body, and the free end of the inner rod in the hydraulic telescopic rod 313 is an inverted trapezoidal design. The inner wall of the first fixed groove 312 is adapted to the hydraulic telescopic rod 313, and the inner wall of the first fixed groove 312 near the opening is in contact with the inner rod surface of the hydraulic telescopic rod 313; after the hydraulic telescopic rod 313 is opened to the maximum extension position, the inner rod does not fully extend out of the first fixed groove.

[0080] When the electric push rod 319 completes the task of pushing the cushion block 314, it retracts to the minimum extension position, and then the conveying motor 307 drives the driving gear 308 to reverse, thereby driving the conveying plate 305 to move down to the base 100. When the conveying plate 305 moves to the lowest point, the staff places another cushion block 314 on the conveying plate 305, and then the conveying motor 307 reverses again and repeats the above operation.

[0081] When the conveying plate 305 drives the second pad 314 to move to the top, the positioning part 309 moves up, and with the cooperation of the hydraulic telescopic rod 313 and the second fixed groove 315 on the pad 314, the first pad 314 follows the positioning part 309 to move up, and then the electric push rod 319 pushes the pad 314 to move into the guide plate 321. At this time, the positioning part 309 drives the first pad 314 to move down to above the second pad 314. At this time, the insertion rod 316 located at the lower pad 314 is inserted into the slot 317 of the upper pad 314, and then the hydraulic telescopic rod 313 is retracted, so that the upper pad 314 is stacked on the lower pad 314.

[0082] Repeat the above operation until the bridge deck is lifted up by the bridge reinforcement jacking device.

[0083] It should be noted that the first pad 314 placed on the conveying plate 305 is not provided with an insertion rod 316 on its top.

[0084] In one embodiment, the number of the limiting rods 204 and the single-sided chain rods 302 is preferably 2, and the two limiting rods 204 are respectively arranged at the front and rear sides of the second support member 202; the two single-sided chain rods 302 are respectively arranged at the left and right sides of the second support member 202.

[0085] In one embodiment, the insertion rod 316 on the pad block 314 is preferably in the shape of a cross or a polygonal column, and the slot 317 at the bottom of the pad block 314 is adapted to the shape of the insertion rod 316, so as to achieve a limiting effect between two adjacent pad blocks 314 and avoid angular rotation or other directional deviation between adjacent pad blocks 314 due to bumps or other accidents.

[0086] In one embodiment, a limiting member that is adapted to the size of the pad 314 is provided on the conveying plate 305. The limiting member is in the shape of a U-shaped member, and the opening is arranged relative to the guide plate 321, so as to limit the pad 314 on the conveying plate 305, thereby improving the transmission efficiency of the electric push rod 319 to the pad 314.

[0087] In one embodiment, the height of the guide plate 321 is lower than the height of the cushion block 314, and when the positioning portion 309 moves downward to the minimum extension position, the distance between the bottom thereof and the second support member 202 is higher than the height of the guide plate 321.

[0088] In one embodiment, each rising or falling distance of the lifting hydraulic rod 310 and the extension and retraction of the hydraulic telescopic rod 313 are completed through a controller. The controller is preset with a control system, which completes the control of the lifting hydraulic rod 310 and the hydraulic telescopic rod 313 according to the height information of each pad block 314 and the number of pad blocks 314 transported to the top of the second support member 202.

[0089] During the process of conveying the cushion block 314 , the slider 306 cooperates with the slide groove 304 , so that the conveying plate 305 and the cushion block 314 thereon will not fall backwards, and the stability of the equipment during operation is ensured.

[0090] In one embodiment, after the conveying plate 305 rises to the highest position, the upper surface of the conveying plate 305 is slightly higher than the upper surface of the second support member 202, thereby avoiding the edge of the cushion block 314 colliding with the edge of the second support member 202 and getting stuck when the electric push rod 319 is working.

[0091] In one embodiment, the conveying motor 307 is preferably a stepper motor.

[0092] In one embodiment, the storage slot 101 in the base 100 is divided into two parts, namely a first storage part and a second storage part, wherein the first storage part is vertically opened in the base 100, and the second storage part is spirally opened in the base 100, and the first storage part and the second storage part are connected to each other. This method effectively utilizes the space in the base 100 and also has an effective storage effect on the single-side chain rod 302.

[0093] It should be noted that the spiral direction of the second receiving portion matches the bendable direction of the single-side chain rod 302 .

[0094] In one embodiment, a tension spring or elastic rope connected to the single-sided chain rod 302 is provided at the end of the second storage portion, so as to apply tension to the single-sided chain rod 302, so that it is tightened and more stable during use. At the same time, the above-mentioned spiral second storage portion increases the friction between the inner wall and the single-sided chain rod 302, further achieving the stabilization effect of the single-sided chain rod 302.

[0095] In one embodiment, when the bridge reinforcement lifting device is not in use, the second support member 202 is first moved down to the minimum extension position, and then the slider 306 is moved down until its bottom contacts the top of the base 100 .

[0096] In one embodiment, the positioning portion 309 is preferably a cube, and the cushion block 314 is preferably a rectangular parallelepiped.

[0097] In one embodiment, a mounting groove for placing the jacking hydraulic rod 310 is opened on the second support member 202 , and the bottom of the jacking hydraulic rod 310 is installed in the mounting groove, so as to improve the stability of the jacking hydraulic rod 310 .

[0098] In one embodiment, there are preferably four lifting hydraulic rods 310 , which are respectively disposed at the four vertex positions of the cube-shaped positioning portion 309 .

[0099] In one embodiment, M is taken to be equal to 2. At this time, the positioning grooves 301 are opened on both sides of the second support member 202 in an axially symmetrical manner. After the cushion moves to the top of the second support member 202, a certain position space is left between the two cushion blocks 314 on both sides, thereby providing a position for the multi-stage telescopic mechanism 320, and also improving the stability during the bridge lifting process.

[0100] In one embodiment, a T-shaped positioning plate 403 is fixedly connected to the free end of the positioning electric telescopic rod 401, the vertical arm of the positioning plate 403 is fixedly connected to the positioning electric telescopic rod 401, and two multi-section electric telescopic rods 404 are fixedly connected to the horizontal arm, and a double-headed pneumatic rod 405 is respectively installed on each section of each multi-section electric telescopic rod 404, and an electric sleeve driving device 402 is respectively installed on the two output ends of each double-headed pneumatic rod 405; air pumps respectively connected to the double-headed pneumatic rods 405 are installed on the second support member 202.

[0101] In one embodiment, a first laser locator is installed on the inner rod of the positioning electric telescopic rod 401, and a second laser locator is provided on each inner rod of the multi-section electric telescopic rod 404; the output direction of the first laser locator is parallel to the direction of the multi-section electric telescopic rod 404, and the output direction of the second laser locator is set at an angle to the electric sleeve drive device 402.

[0102] In one embodiment, the laser output by the first laser locator is parallel to the vertical arm of the positioning plate 403 and located on the same vertical line, and the two multi-section electric telescopic rods 404 on the same positioning plate 403 are symmetrically arranged on the left and right sides of the first laser locator.

[0103] In one embodiment, when the laser output by the second laser locator locates a bolt, the electric sleeve drive device 402 and the bolt are located on the same vertical line.

[0104] After the supporting jacking equipment is lifted, the first laser locator is turned on, and the electric telescopic rod 401 is positioned and extended until the first laser locator is positioned at the center of the bridge support. At this time, the electric telescopic rod 401 stops moving and the first laser locator is turned off. Then the multi-section electric telescopic rod 404 is extended, and at the same time the second laser locator is turned on until the second laser locator is positioned at the location of the corresponding bolt. At this time, the sleeve installed on the electric sleeve drive device 402 is on the same vertical line as the bolt. Then the multi-section electric telescopic rod 404 stops moving and the second laser locator is turned off. At this time, the double-headed pneumatic rod 405 is unfolded to the maximum extension position, and each sleeve is respectively sleeved on the head of the corresponding bolt. Then the electric sleeve drive device 402 is started to disassemble the bolt. When the bolt is disassembled, the double-headed pneumatic rod 405 is recovered, and then all the inner rods of the multi-section electric telescopic rod 404 are recovered at the same time until they are completely in the minimum extension position.

[0105] After the bolts on a bridge support on both sides of the bridge reinforcement jacking device are removed, the positioning electric telescopic rod 401 and the first laser locator are started again, and the positioning electric telescopic rod 401 continues to extend until the first laser locator locates the next bridge support where the bolts need to be removed, and the above work process is repeated.

[0106] It should be noted that the working principle of the laser locator is a technology well known to the public in the prior art, and technicians in this field can easily know its specific internal structure and working principle, so its specific content will not be elaborated in detail in this article.

[0107] In one embodiment, when the multi-section electric telescopic rod 404 moves, the inner rod closest to the outer rod moves first until the electric sleeve drive device 402 and the second laser locator fixed above it detect and move to the top of the corresponding bolt, and then the inner rod adjacent to it starts to move and repeats the above operation until the positioning of the farthest bolt is completed.

[0108] In one embodiment, the jacking device for bridge reinforcement also includes a remote controller, a signal transmitter connected to the remote controller, and a battery, a controller and a signal receiver installed in the base 100. The battery and the controller are electrically connected to the drive motor 203, the electromagnet 212, the positioning electric telescopic rod 401, the conveying motor 307, the hydraulic telescopic rod 313, the air pump, the multi-stage telescopic mechanism 320, the first laser locator, the second laser locator, the electric sleeve drive device 402 and the electric push rod 319, and the battery, the controller and the signal receiver are electrically connected to each other.

[0109] In one embodiment, the base 100 is provided with a control panel to improve the realization of various types of control and avoid the suspension of construction progress due to damage to the remote controller or other unexpected situations.

[0110] It should be noted that the above-mentioned remote controller, signal transmitter, signal receiver and control panel, etc., as well as the control methods between the various components are all technologies and principles well known to the public in the prior art, so their specific internal structures and working principles under mutual cooperation will not be further elaborated in this article.

[0111] In one embodiment, the positioning electric telescopic rod 401 can be a multi-section electric telescopic rod. In this case, each section is fixed with a positioning plate 403 and other parts fixed to the positioning plate 403, so that the bolts on multiple bridge supports in the same direction can be removed simultaneously while increasing the moving distance. When put into use, the inner rod connected to the outer rod starts working first, and so on until the innermost inner rod is aligned with the outermost bridge support, and then the multi-section electric telescopic rod 404 on each section starts to move, and repeats the working principle of the multi-section electric telescopic rod 404, so as to achieve the effect of removing the bolts on multiple bridge supports.

[0112] A construction method of a jacking device for bridge reinforcement comprises the following steps:

[0113] Step 1: Move the lifting device to the predetermined position under the bridge. After the position is confirmed and fixed, energize the electromagnet 212. At this time, the second limiter 206 moves toward the electromagnet 212, and then start the drive motor 203 until the positioning electric telescopic rod 401 in the disassembly device 400 is flush with the position of the bridge support. At this time, the electromagnet 212 is de-energized, and the second limiter 206 is inserted into the positioning hole 214 located on the same horizontal plane under the action of the limit spring 210;

[0114] Step 2: Open the first laser locator, start the disassembly device 400, align the center of the positioning plate 403 with the bridge support by extending the positioning electric telescopic rod 401 outward, then open the second laser locator and start the multi-section electric telescopic rod 404, so that the double-headed pneumatic rod 405 on each section is aligned with the bolt on the bridge support;

[0115] Step 3: The double-headed pneumatic rod 405 is extended to allow the sleeve on the electric sleeve driving device 402 to be sleeved on the corresponding bolt, and then the electric sleeve driving device 402 is started to remove the bolt on the bridge support;

[0116] Step 4: After the bolts are removed, first retract the double-headed pneumatic rod 405 to the minimum extension position, and then retract the multi-section electric telescopic rod 404 to the minimum extension position. After the retraction is completed, the electric telescopic rod 401 is positioned to continue to extend outward, and the position of the next bridge support is located by the first laser locator, and the above steps 2 and 3 are repeated;

[0117] Step 5: After all the bolts on the bridge supports are removed, the double-headed pneumatic rod 405 is retracted to the minimum extension position, and then the multi-section electric telescopic rod 404 is retracted to the minimum extension position, and finally the positioning electric telescopic rod 401 is retracted to the minimum extension position;

[0118] Step 6: Start the positioning and lifting device 300, transport the plurality of pads 314 one by one to the second support member 202 and arrange them, so as to lift the bridge deck. After the bridge is lifted, the bridge bearings are immediately inspected or replaced;

[0119] Step 7: After the inspection or replacement is completed, the positioning portion 309 cooperates with the lifting hydraulic rod 310 to lift the second support member 202 except the bottom pad 314, and then the bottom pad 314 is pushed by the multi-stage telescopic mechanism 320 until it is moved out;

[0120] Step eight, repeat the operation of step seven above until the pad 314 is completely removed, and finally energize the electromagnet 212 to move the second limit member 206 out of the positioning hole 214, and then start the drive motor 203 again to make the drive motor 203 drive the first support member 201 to reverse, thereby realizing the downward movement of the second support member 202, thereby completing the recovery operation of the jacking device for bridge reinforcement.

[0121] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0122] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0123] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0124] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A jacking device for bridge reinforcement, characterized in that: Including: A base (100), a support lifting device (200), and a disassembly device (400) arranged in sequence from bottom to top; The support lifting device (200) includes: a first support member (201) rotatably connected to the base (100) and a second support member (202) with an installation groove recessed in the bottom. The outer surface of the first support member (201) is provided with a first thread; a second thread adapted to the first thread is provided in the installation groove, and the second support member (202) is threadedly sleeved on the first support member (201); The disassembly device (400) includes: positioning electric telescopic rods (401) symmetrically arranged on the second support member (202). A plurality of electric sleeve driving devices (402) are installed at the free ends of the positioning electric telescopic rods (401), and sleeves are installed on the output ends of each of the electric sleeve driving devices (402); A driving motor (203) is provided in the base (100). The output end of the driving motor (203) passes through the base (100) and is fixedly connected to the bottom of the first support member (201); a jacking steel plate (318) is provided at the top of the second support member (202).

2. A jacking device for bridge reinforcement according to claim 1, characterized in that: The support lifting device (200) further includes N limiting rods (204) located at the bottom of the second support member (202) and fixedly connected to the base (100). A plurality of limiting holes corresponding to the limiting rods (204) one by one are provided in the bottom of the second support member (202), and each of the limiting rods (204) is inserted into the corresponding limiting hole; N is greater than or equal to 1; A plurality of limiting parts corresponding to each of the limiting rods (204) one by one are installed on the second support member (202). Each of the limiting parts respectively includes a first limiting member (205) fixedly connected to the bottom of the second support member (202). A first limiting groove (207) is horizontally provided in the first limiting member (205). A second limiting member (206) is inserted into the first limiting groove (207). A plurality of positioning holes (214) adapted to the second limiting member (206) are vertically provided on each of the limiting rods (204).

3. A jacking device for bridge reinforcement according to claim 2, characterized in that: A second limiting groove (208) is provided in the first limiting groove (207). A limiting plate (209) is sleeved and fixedly connected to the outer surface of the second limiting member (206) located in the second limiting groove (208). A limiting spring (210) sleeved on the second limiting member (206) is provided in the second limiting groove (208). The limiting spring (210) is arranged between one end of the second limiting groove (208) far from the second support member (202) and the limiting plate (209); A U-shaped third limiting member (211) is fixedly connected to the end of the first limiting member (205) far from the second support member (202). The opening of the third limiting member (211) is oppositely arranged to the first limiting groove (207). An electromagnet (212) is provided in the space surrounded by the third limiting member (211). A magnetic block (213) is installed at the end of the second limiting member (206) opposite to the electromagnet (212).

4. A jacking device for bridge reinforcement according to claim 1 or 3, characterized in that: The bridge reinforcement jacking device also includes a positioning jacking device (300), the positioning jacking device (300) includes M positioning grooves (301) provided on the side wall of the second support member (202), a receiving groove (101) is provided on the base (100) at a position corresponding to each positioning groove (301), a single-side chain rod (302) is fixedly connected in each positioning groove (301), each single-side chain rod (302) extends into the corresponding receiving groove (101), a C-shaped positioning block (303) is sleeved and fixedly connected on each chain rod joint of the single-side chain rod (302), and an L-shaped sliding groove (304) is provided at the front end of the two side walls of each positioning block (303); M is greater than or equal to 2; The positioning and lifting device (300) further comprises a plurality of conveying plates (305) corresponding to each single-side chain rod (302), a pair of sliders (306) being fixedly connected to the bottom of each conveying plate (305), each pair of sliders (306) being slidably connected to the slide grooves (304) on both sides of the corresponding positioning block (303), a conveying motor (307) being fixedly connected to one of the sliders (306) in each pair of sliders (306), a transmission shaft of the conveying motor (307) passing through the fixed slider (306) and being rotationally connected to the other slider (306), a driving gear (308) meshing with the single-side chain rod (302) being sleeved and fixedly connected to the transmission shaft of the motor.

5. A jacking device for bridge reinforcement according to claim 4, characterized in that: The positioning and lifting device (300) further comprises a positioning portion (309) disposed on the second support member (202), the positioning portion (309) and the second support member (202) being connected via a plurality of lifting hydraulic rods (310), a through slot (311) being provided on the positioning portion (309), a plurality of first fixing slots (312) being provided on the side wall of the through slot (311), and a hydraulic telescopic rod (313) being installed in each first fixing slot (312); The bridge reinforcement lifting device comprises a plurality of cushion blocks (314), each of the cushion blocks (314) is provided with a plurality of second fixing grooves (315) adapted to the hydraulic telescopic rods (313), the top of each cushion block (314) is fixedly connected with a plurality of insertion rods (316), and the bottom of each cushion block (314) is provided with a plurality of slots (317) corresponding one-to-one to each insertion rod (316); A placement groove is provided on each positioning portion (309), the placement groove is coaxially arranged with the through groove (311), and the lifting steel plate (318) is arranged in the placement groove.

6. A jacking device for bridge reinforcement according to claim 5, characterized in that: Each of the conveying plates (305) is provided with Y electric push rods (319), and the second support member (202) is provided with a plurality of multi-stage telescopic mechanisms (320) corresponding to each of the conveying plates (305) one by one, and a U-shaped guide plate (321) is fixedly connected to the free end of each of the multi-stage telescopic mechanisms (320), and the space surrounded by the guide plate (321) is adapted to the cushion block (314); Y is greater than or equal to 1.

7. The jacking device for bridge reinforcement according to claim 1, characterized in that: A T-shaped positioning plate (403) is fixedly connected to the free end of the positioning electric telescopic rod (401); the vertical arm of the positioning plate (403) is fixedly connected to the positioning electric telescopic rod (401); two multi-section electric telescopic rods (404) are fixedly connected to the horizontal arm; each section of each multi-section electric telescopic rod (404) is respectively installed with a double-headed pneumatic rod (405); and each of the two output ends of each double-headed pneumatic rod (405) is respectively installed with an electric sleeve driving device (402); The second support member (202) is provided with air pumps respectively connected to the double-headed pneumatic rods (405).

8. A jacking device for bridge reinforcement according to claim 7, characterized in that: A first laser locator is installed on the inner rod of the positioning electric telescopic rod (401), and a second laser locator is respectively provided on each inner rod of the multi-section electric telescopic rod (404); the output direction of the first laser locator is parallel to the direction of the multi-section electric telescopic rod (404), and the output direction of the second laser locator is arranged at an angle to the output direction of the electric sleeve driving device (402).

9. A jacking device for bridge reinforcement according to claim 8, characterized in that: The bridge reinforcement jacking device also includes a remote controller, a signal transmitter connected to the remote controller, and a battery, a controller and a signal receiver installed in the base (100); the battery and the controller are respectively electrically connected to the drive motor (203), the electromagnet (212), the positioning electric telescopic rod (401), the conveying motor (307), the hydraulic telescopic rod (313), the air pump, the multi-stage telescopic mechanism (320), the first laser locator, the second laser locator, the electric sleeve drive device (402) and the electric push rod (319); and the battery, the controller and the signal receiver are electrically connected to each other.

10. The construction method of the jacking device for bridge reinforcement according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Move the lifting device to a predetermined position under the bridge. After the position is confirmed and fixed, the electromagnet (212) is energized. At this time, the second limiter (206) moves toward the electromagnet (212). Then, the drive motor (203) is started until the positioning electric telescopic rod (401) in the disassembly device (400) is flush with the position of the bridge support. At this time, the electromagnet (212) is de-energized. The second limiter (206) is inserted into the positioning hole (214) located on the same horizontal plane under the action of the limit spring (210); Step 2: Open the first laser locator, start the disassembly device (400), align the center of the positioning plate (403) with the bridge support by extending the positioning electric telescopic rod (401) outward, then open the second laser locator and start the multi-section electric telescopic rod (404) to align the double-headed pneumatic rod (405) on each section with the bolt on the bridge support; Step 3: The double-headed pneumatic rod (405) is extended to allow the sleeve on the electric sleeve driving device (402) to be sleeved on the corresponding bolt, and then the electric sleeve driving device (402) is started to remove the bolt on the bridge support; Step 4: After the bolts are removed, the double-headed pneumatic rod (405) is first retracted to the minimum extension position, and then the multi-section electric telescopic rod (404) is retracted to the minimum extension position. After the retraction is completed, the electric telescopic rod (401) is positioned to continue to extend outward, and the position of the next bridge support is located by the first laser locator, and the operations of the above steps 2 and 3 are repeated; Step 5: After all the bolts on the bridge supports are removed, the double-headed pneumatic rod (405) is retracted to the minimum extension position, and then the multi-section electric telescopic rod (404) is retracted to the minimum extension position, and finally the positioning electric telescopic rod (401) is retracted to the minimum extension position; Step 6: Start the positioning and lifting device (300), transport a plurality of pads (314) one by one to the second support member (202) and arrange them, so as to lift the bridge deck. After the bridge is lifted, the bridge bearings are immediately inspected or replaced; Step 7: After the inspection or replacement is completed, the positioning portion (309) and the lifting hydraulic rod (310) cooperate with each other to lift the second support member (202) except for the bottom pad (314), and then the bottom pad (314) is pushed by the multi-stage telescopic mechanism (320) until it is removed; Step 8, repeat the operation of step 7 above until the pad (314) is completely removed, and finally energize the electromagnet (212) to move the second limit member (206) out of the positioning hole (214), and then start the drive motor (203) again, so that the drive motor (203) drives the first support member (201) to reverse, thereby realizing the downward movement of the second support member (202), thereby completing the recovery operation of the bridge reinforcement jacking device.

Images