A beam body displacement device

Abstract

The application discloses a kind of rectification beam body displacement equipment, including two rubber supports rotatably installed on pier and the stainless steel plate being installed on beam body and corresponding rubber support arrangement, further including two groups of hydraulic components being symmetrically installed on pier, the hydraulic component includes vertical hydraulic cylinder and lateral hydraulic cylinder, the lateral hydraulic cylinder and vertical hydraulic cylinder are communicated by oil guide pipe one, the drive component for driving rubber support rotation is installed on the pier, wherein the telescopic end of the lateral hydraulic cylinder is in elongation state and corresponds with the circumferential side of beam body, the telescopic end of the vertical hydraulic cylinder is in contraction state and is 0.2-2.0cm from the lower side of beam body.The rectification beam body displacement equipment changes the energy of beam body side slip into the increase of gravitational potential energy in the process of beam body lateral inclination, reduces the risk of beam body side slip falling, and ensures the safety of beam body.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, specifically to a device for correcting bridge beam displacement. Background Technology

[0002] Precast beams are manufactured in a factory and then transported to the construction site for installation on bridge piers according to design requirements. Under the influence of factors such as vehicle impact, thermal expansion and contraction of the beam, beam stress, and wind, the beam may experience lateral slippage during use. Current technology uses anti-seismic blocks cast on the bridge piers to limit the lateral movement of the beam. During lateral slippage, the beam impacts the anti-seismic blocks on the bridge piers, which may break under the impact, posing a risk of the beam falling off the bridge pier. If the strength of the anti-seismic blocks is increased to prevent the beam from falling off the bridge pier, the beam's inertia is high when it impacts the blocks, posing a risk of cracks and creating a safety hazard. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a device for correcting beam displacement, which converts the energy of beam lateral slip into the increase of gravitational potential energy during the lateral tilting of the beam, thereby achieving buffering and energy dissipation of beam lateral slip, reducing the risk of beam lateral slip and falling, and ensuring the safety of the beam, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a beam displacement correction device, comprising two rubber bearings rotatably mounted on the bridge pier and a stainless steel plate mounted on the beam and corresponding to the rubber bearings, and further comprising two sets of hydraulic components symmetrically mounted on the bridge pier, wherein the hydraulic components include a vertical hydraulic cylinder and a lateral hydraulic cylinder, and the lateral hydraulic cylinder and the vertical hydraulic cylinder are connected by an oil guide pipe.

[0005] The bridge pier is equipped with a drive assembly that drives the rubber bearing to rotate.

[0006] The lateral hydraulic cylinder has its extension end extended and corresponds to the periphery of the beam, while the vertical hydraulic cylinder has its extension end retracted and is 0.2-2.0 cm away from the lower side of the beam.

[0007] As a preferred embodiment of the present invention, the drive assembly includes a support rod, a one-way ratchet gear is mounted on the rubber support, and a rack that meshes with the one-way ratchet gear is mounted on the bridge pier.

[0008] The upper part of the support rod is equipped with a horizontally rotating slide rail, and a sliding slider is installed on the slide rail. The slider is fixedly installed on the beam body, and the rack and the support rod are connected by a connecting rope.

[0009] As a preferred technical scheme of the present application, the bridge pier is provided with a rotating guide wheel, the rack is located between the guide wheel and the one-way ratchet gear, and the end of the rack away from the connecting rope is provided with an elastic member.

[0010] As a preferred technical scheme of the present application, the box is further provided with a sliding block one sealingly sliding up and down on the inner wall of the box, the upper side of the sliding block one is provided with a sliding rod, the sliding rod slidingly penetrates through and extends out of the box, one end of the sliding rod outside the box is connected with the supporting rod through a traction connecting member, a communication hole is formed in the upper side of the box, the communication hole is connected with one end of a conduit, and the other end of the conduit faces between the rubber support and the stainless steel plate.

[0011] As a preferred technical scheme of the present application, the box is further provided with a liquid tank containing silicone oil, the liquid outlet of the liquid tank is communicated with the liquid inlet of the one-way valve one, the liquid outlet of the one-way valve one is communicated with the upper part of the inner cavity of the box, and the conduit is provided with a one-way valve two.

[0012] As a preferred technical scheme of the present application, the bottom side of the inner cavity of the box is fixed with a magnetic block, the sliding block one is made of magnetic material or iron, and the traction connecting member is a spring or an elastic rope.

[0013] As a preferred technical scheme of the present application, the lower end of the supporting rod is connected with the bridge pier through an elastic rubber block or a spring.

[0014] As a preferred technical scheme of the present application, the box is further provided with a shell, a sliding partition plate is sealingly and slidingly arranged in the inner cavity of the shell, the sliding partition plate divides the shell into a compressed air cavity and a hydraulic oil cavity, an opening communicating with the hydraulic oil cavity is formed in the shell, a press valve is arranged on the opening, and the press valve and the vertical hydraulic cylinder are communicated through a second oil guide pipe.

[0015] The bridge pier is provided with a U-shaped detection support with an upward moving tendency, and the detection support shields the press valve.

[0016] When the beam body is empty, the detection support moves upward and the detection support and the press valve are misaligned, and the press valve changes from a closed state to an open state.

[0017] As a preferred technical scheme of the present application, when the press valve is in the open state, the supporting force of the vertical hydraulic cylinder on the beam body is 0.3-0.4 times the load of the beam body at the bridge pier.

[0018] As a preferred technical scheme of the present application, the bridge pier is provided with anti-seismic blocks on both sides in the length direction, and the lateral hydraulic cylinder is arranged on the anti-seismic blocks.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. The beam displacement device of this invention, on the one hand, converts the energy of beam lateral slippage into the gravitational potential energy increased during the lateral tilting of the beam, thereby buffering and dissipating the energy of beam lateral slippage and reducing the risk of beam falling. On the other hand, during the process of the beam tilting from horizontal to lateral, the drive component drives the rubber bearing to rotate, reducing the damage caused by repeated pressure on the outer side of the rubber bearing and extending the service life of the rubber bearing. Furthermore, during the process of the beam tilting from horizontal to lateral, the rotation of the rubber bearing causes the position of the silicone grease sprayed between the rubber bearing and the stainless steel plate to be different each time, so that the silicone grease is added evenly between the rubber bearing and the stainless steel plate, ensuring lubrication between the rubber bearing and the stainless steel plate.

[0021] 2. In the beam displacement device of the present invention, the distance between the beam and the pier increases, the detection bracket moves upward and the detection bracket and the push-button valve are misaligned, the push-button valve changes from the closed state to the open state, and under the drive of the compressed air in the compressed air chamber of the shell, the hydraulic oil in the hydraulic oil chamber of the shell enters the vertical hydraulic cylinder through the second oil guide pipe, the vertical hydraulic cylinder extends and supports the lower side of the beam to avoid damage to the beam due to detachment.

[0022] 3. In the beam displacement device of the present invention, when a vehicle passes over the beam after it has tilted laterally, the weight of the vehicle and the weight of the beam act together on the vertical hydraulic cylinder in the lifting state. The vertical hydraulic cylinder is compressed and the hydraulic oil in the vertical hydraulic cylinder enters the lateral hydraulic cylinder connected to it. The beam changes from lateral tilt to horizontal. The lateral hydraulic cylinder extends and pushes the beam to slide horizontally and reset, so that the position of the beam is restored to a certain range.

[0023] 4. In the beam displacement device of this invention, as the beam gradually tilts laterally from horizontal, the tension on the traction connector gradually increases and the traction connector elongates. When the tension on slider one is greater than the magnetic attraction between the magnetic block and slider one, the magnetic block and slider one disengage. The magnetic attraction between the magnetic block and slider one decreases rapidly. The silicone grease in the box is pressurized and squeezed out and sprayed through the conduit into the gap between the rubber support and the stainless steel plate. This increases the initial pressure of the silicone grease at the conduit spray point, increases the amount of silicone grease falling on the rubber support, and ensures lubrication between the rubber support and the stainless steel plate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the beam's lateral displacement state structure according to the present invention;

[0026] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A;

[0027] Figure 4 This is a schematic diagram of the present invention with the beam structure removed;

[0028] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B;

[0029] Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point C;

[0030] Figure 7 for Figure 4 Enlarged schematic diagram of the structure at point D;

[0031] Figure 8 This is a schematic diagram of an embodiment of the slider and slide rail of the present invention.

[0032] In the diagram: 1 Vertical hydraulic cylinder, 2 Lateral hydraulic cylinder, 3 Oil guide pipe one, 4 Housing, 5 Oil guide pipe two, 6 Detection bracket, 7 Rubber support, 8 Conduit, 9 Stainless steel plate, 10 Guide wheel, 11 Connecting rope, 12 Slider, 13 Slide rail, 14 Support rod, 15 Traction connector, 16 Box, 17 Slide rod, 18 Slider one, 19 Magnetic block, 20 One-way valve one, 21 Liquid bladder, 22 One-way ratchet, 23 Rack, 24 Elastic element, 25 Valve, 26 Sliding partition. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1:

[0035] Please see Figures 1-6 This embodiment discloses a device for correcting beam displacement, including two rubber bearings 7 rotatably installed on the bridge pier and a stainless steel plate 9 installed on the beam and corresponding to the rubber bearings 7. The rubber bearings 7 and the bridge pier are connected by thrust bearings, angular contact bearings, plane bearings or roller bearings. This embodiment also includes two sets of hydraulic components symmetrically installed on the bridge pier. The hydraulic components include a vertical hydraulic cylinder 1 and a lateral hydraulic cylinder 2. The lateral hydraulic cylinder 2 and the vertical hydraulic cylinder 1 are connected by an oil guide pipe 3.

[0036] The telescopic end of the lateral hydraulic cylinder 2 is in an extended state and is set corresponding to the periphery of the beam, while the telescopic end of the vertical hydraulic cylinder 1 is in a retracted state and is 0.2-2.0cm away from the lower side of the beam, leaving space for the deformation of the rubber support 7 after the beam bears the load.

[0037] The driving assembly drives the rubber support 7 to rotate in the lateral tilting process of the beam body.

[0038] The vertical hydraulic cylinder 1 and the lateral hydraulic cylinder 2 used in the present application are both execution elements in the common hydraulic transmission system in the prior art, and the working mode and structure thereof are both well-known technologies, which will not be described herein.

[0039] The stainless steel plate 9 and the rubber support 7 constitute a common tetrafluoroethylene sliding plate type rubber support in the prior art, the upper side of the rubber support 7 is a polytetrafluoroethylene plate, and the tetrafluoroethylene sliding plate type rubber support is mostly used in small and medium span continuous beam bridges.

[0040] The working process and principle of the present embodiment are as follows:

[0041] The stainless steel plate 9 on the beam body and the rubber support 7 on the pier are attached, and the rubber support 7 is coated with silicone oil, and the low friction coefficient between the stainless steel plate 9 and the rubber support 7 meets the displacement requirement of the bridge.

[0042] When the beam body slides laterally, the beam body contacts the lateral hydraulic cylinder 2, the lateral hydraulic cylinder 2 is compressed and shortened, and the hydraulic oil in the lateral hydraulic cylinder 2 enters the vertical hydraulic cylinder 1 through the oil guide pipe one 3, the vertical hydraulic cylinder 1 is elongated to lift one side of the beam body as shown in the drawing, and the energy of the lateral sliding of the beam body is converted into the increase of the gravitational potential energy of the beam body in the lateral tilting process, thereby achieving the energy dissipation and buffering of the lateral sliding of the beam body, reducing the risk of falling of the beam body, and when a heavy vehicle passes through the beam body, the weight of the vehicle and the weight of the beam body jointly act on the vertical hydraulic cylinder 1, the vertical hydraulic cylinder 1 is compressed and shortened, and the hydraulic oil in the vertical hydraulic cylinder 1 enters the lateral hydraulic cylinder 2 in communication therewith, the beam body is converted from lateral tilting to horizontal, the lateral hydraulic cylinder 2 is elongated and pushes the beam body to horizontally slide back to restore the position of the beam body to a certain range. Figure 2 The vertical hydraulic cylinder 1 is elongated to lift one side of the beam body, the driving assembly drives the rubber support 7 to rotate in the lateral tilting process of the beam body, and the damage of the rubber support 7 caused by repeatedly bearing pressure on the side close to the outside is slowed down, thereby prolonging the service life of the rubber support 7.

[0043] Further, the pier is provided with anti-seismic blocks on both sides in the length direction, and the lateral hydraulic cylinder 2 is installed on the anti-seismic blocks, when the lateral hydraulic cylinder 2 is accidentally damaged, the anti-seismic blocks limit the moving range of the lateral sliding of the beam body, thereby preventing the beam body from falling off the pier.

[0044] Further, the two rubber supports 7 are located between the two vertical hydraulic cylinders 1 in the vertical projection perpendicular to the length direction of the beam body.

[0045]

[0046] ​Further, the maximum height of the beam body rising when the beam body is laterally inclined is 1.0-5.0 cm, reducing the influence of the lateral inclination of the beam body on the driving on the bridge deck.

[0047] Embodiment two:

[0048] As shown in Figures 2-6 the embodiment, the beam body displacement device is disclosed, which has a structure substantially the same as that of the first embodiment, and the difference is that the driving assembly of the embodiment comprises a support rod 14, a one-way ratchet gear 22 is mounted on the rubber support 7, a rack 23 engaging with the one-way ratchet gear 22 is mounted on the pier, when the rack 23 moves to the upper middle part of the pier, the rack 23 drives the rubber support 7 to rotate through the one-way ratchet gear 22, and when the rack 23 moves away from the upper middle part of the pier, the one-way ratchet gear 22 idles without transmitting force.

[0049] The upper part of the support rod 14 is mounted with a horizontally rotating slide rail 13 through a bearing or a rotating pin, the slide rail 13 is mounted with a sliding slide block 12, and the slide block 12 is fixedly mounted on the beam body, the rack 23 and the support rod 14 are connected through a connecting rope 11, and the connecting rope 11 is taut.

[0050] The working process and principle of the embodiment are as follows:

[0051] The slide block 12 moves along the length direction of the slide rail 13, and the slide rail 13 can rotate around the support rod 14, when the beam body horizontally slides, the displacement change of the support rod 14 compared with the pier is small, when the beam body is laterally inclined, the beam body pulls the rack 23 to move through the slide block 12, the slide rail 13, the support rod 14 and the connecting rope 11, the rack 23 drives the rubber support 7 to rotate through the one-way ratchet gear 22, reducing the damage of the rubber support 7 caused by repeatedly bearing pressure on the side close to the outer side, and prolonging the service life of the rubber support 7.

[0052] Preferably, the slide block 12 and the beam body are connected through a universal joint as shown in Figure 8 The slide pipe is slidably sleeved on the support rod 14, one end of the slide pipe is fixed on the pier, the slide pipe enables the support rod 14 to slide up and down, the universal joint enables the slide rail 13 to remain horizontal when the beam body is laterally inclined, the support rod 14 is limited to slide up and down, ensuring that the support rod 14 pulls the rack 23 through the connecting rope 11, and the embodiment adopts manual resetting of the rack 23.

[0053] Preferably, the lower end of the support rod 14 and the pier are connected through an elastic rubber block or a spring, the elastic rubber block or the spring limits the horizontal movement range of the support rod 14, facilitating the support rod 14 to pull the rack 23 through the connecting rope 11, and the embodiment adopts manual resetting of the rack 23.

[0054] Embodiment three:

[0055] As shown in Figure 6As shown, the embodiment discloses a beam body displacement device, which has the same structure as that of the second embodiment, but the difference is that the rotating guide wheel 10 is installed on the bridge pier, the rack 23 is located between the guide wheel 10 and the one-way ratchet wheel 22, the end of the rack 23 away from the connecting rope 11 is connected to the bridge pier through the elastic member 24, and the elastic member 24 is an elastic rope or a spring.

[0056] The guide wheel 10 is provided with an annular groove, and the rack 23 is clamped in the annular groove. The guide wheel 10 keeps the rack 23 and the one-way ratchet wheel 22 in engagement. When the beam body is restored to be horizontal from the lateral inclination, the elastic member 24 pulls the rack 23 to move away from the upper middle part of the bridge pier, so as to reset the rack 23.

[0057] Preferably, the guide wheel 10 is provided with a clockwork spring, which accumulates elastic potential energy, so that the guide wheel 10 has a tendency to drive the rack 23 to move outward.

[0058] Embodiment four:

[0059] As shown in the drawings, Figure 4 and Figure 5 the embodiment discloses a beam body displacement device. On the basis of the second embodiment or the third embodiment, the embodiment further comprises a box body 16. The inner wall of the box body 16 is provided with a sliding block one 18 which is sealed and slides up and down. The upper side of the sliding block one 18 is provided with a sliding rod 17 which is slidably penetrated through and extends to the outside of the box body 16. The end of the sliding rod 17 located outside the box body 16 is connected between the supporting rod 14 and the traction connecting member 15. The upper side of the box body 16 is provided with a communication hole which is connected with one end of the conduit 8. The other end of the conduit 8 is directed between the rubber support 7 and the stainless steel plate 9. The box body 16 contains silicone oil.

[0060] The working process and principle of the embodiment are as follows:

[0061] During the process of changing the beam body from horizontal to lateral inclination, the beam body drives the sliding block one 18 and the sliding rod 17 to move upward through the sliding block 12, the sliding rail 13, the supporting rod 14 and the traction connecting member 15. The sliding block one 18 sprays the silicone oil in the box body 16 to the gap between the rubber support 7 and the stainless steel plate 9 through the conduit 8, so as to add silicone oil between the rubber support 7 and the stainless steel plate 9, reduce the sliding resistance between the rubber support 7 and the stainless steel plate 9, reset the sliding rod 17 and the sliding block one 18 by the worker, and supplement the silicone oil in the box body 16.

[0062] The traction connecting member 15 is a connecting rope or a connecting chain.

[0063] Embodiment five:

[0064] As shown in the drawings, Figure 4 and Figure 5As shown, this embodiment discloses a beam displacement device, whose structure is roughly the same as that of embodiment four. The difference is that this embodiment also includes a liquid bladder 21 containing silicone grease. The outlet of the liquid bladder 21 is connected to the inlet of one-way valve 20. The outlet of one-way valve 20 is connected to the upper part of the inner cavity of the box 16. One-way valve 2 is installed on the conduit 8, which allows the silicone grease in the box 16 to flow out in one direction.

[0065] The working process and principle of this embodiment are as follows:

[0066] The worker presses down the slide bar 17 to reset the slider 18. During the reset, the silicone grease in the liquid bladder 21 is drawn into the housing 16, reducing the amount of work required for the worker to add silicone grease to the housing 16.

[0067] Example 6:

[0068] like Figure 5 As shown, this embodiment discloses a beam displacement device, whose structure is roughly the same as that of Embodiment 5. The difference is that in this embodiment, a magnetic block 19 is fixed on the bottom side of the inner cavity of the box 16, the slider 18 is made of magnetic material or iron, and the traction connector 15 is a spring or elastic rope.

[0069] As the beam gradually tilts laterally from horizontal, the tension on the traction connector 15 gradually increases and the traction connector 15 elongates. When the tension on the slider 18 exceeds the magnetic attraction between the magnetic block 19 and the slider 18, the magnetic block 19 and the slider 18 disengage. The magnetic attraction between the magnetic block 19 and the slider 18 decreases rapidly. The silicone grease in the housing 16 is squeezed and sprayed through the conduit 8 into the gap between the rubber support 7 and the stainless steel plate 9. This increases the initial pressure of the silicone grease sprayed from the conduit 8, increases the amount of silicone grease falling on the rubber support 7, and ensures lubrication between the rubber support 7 and the stainless steel plate 9.

[0070] When the beam returns from lateral tilt to horizontal, the magnetic attraction between the magnetic block 19 and the slider 18 causes the slider 18 to slide downward, and the silicone grease in the liquid bladder 21 is drawn into the box 16, realizing the automatic addition of silicone grease in the box 16. During the process of the beam tilting from horizontal to lateral, the rotation of the rubber support 7 makes the position of the silicone grease sprayed between the rubber support 7 and the stainless steel plate 9 different each time, so that the silicone grease is added evenly between the rubber support 7 and the stainless steel plate 9.

[0071] Example 7:

[0072] like Figure 4 and Figure 7As shown, the embodiment discloses a beam body displacement device, which has substantially the same structure as that of the first embodiment, but differs from the first embodiment in that the embodiment further comprises a shell 4, a sliding partition plate 26 is slidingly and sealingly arranged in the inner cavity of the shell 4, the shell 4 is divided into a compressed air cavity and a hydraulic oil cavity by the sliding partition plate 26, an opening communicating with the hydraulic oil cavity is formed in the shell 4, and a press valve 25 is arranged on the opening, and the press valve 25 and the vertical hydraulic cylinder 1 are communicated through a second oil guide pipe 5.

[0073] A detection bracket 6 in a U shape and having an upward moving tendency is arranged on the pier, the detection bracket blocks the press valve 25, and preferably, the end of the detection bracket 6 is close to the vertical hydraulic cylinder 1.

[0074] When the beam body is empty, the detection bracket 6 moves upward and the detection bracket 6 and the press valve 25 are misaligned, and the press valve 25 changes from a closed state to an open state.

[0075] Further, when the press valve 25 is in the open state, the supporting force of the vertical hydraulic cylinder 1 to the beam body is 0.3-0.4 times the load of the beam body at the pier.

[0076] The press valve 25 is a valve commonly used in the prior art, and when the press button on the press valve 25 is pressed, the press valve 25 is in a closed state, and when the force on the press button disappears, the press button automatically rises and the press valve 25 is in an open state.

[0077] The working process and principle of the embodiment are as follows:

[0078] The settlement deformation of the pier soil foundation, the emptying of the beam body due to stress, thermal expansion and contraction and other factors, when heavy vehicles pass through, the beam body changes from uniform support to uneven support, and stress concentration occurs at the position of the beam body at the maximum settlement value of the emptying area, and the gradually generated cracks further increase the stress in the rear part, and when the stress exceeds the allowable bending tensile stress, the beam body is at risk of breaking.

[0079] After the beam body is empty, the distance between the beam body and the pier increases, the detection bracket 6 moves upward and the detection bracket 6 and the press valve 25 are misaligned, the press valve 25 changes from a closed state to an open state, under the driving of the compressed air in the compressed air cavity of the shell 4, the hydraulic oil in the hydraulic oil cavity of the shell 4 enters the vertical hydraulic cylinder 1 through the second oil guide pipe 5, the vertical hydraulic cylinder 1 is elongated and supports the lower side of the beam body, thereby avoiding damage to the beam body due to emptying.

[0080] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for correcting beam displacement, comprising two rubber bearings (7) rotatably mounted on a bridge pier and a stainless steel plate (9) mounted on the beam and corresponding to the rubber bearings (7), characterized in that: It also includes two sets of hydraulic components symmetrically installed on the piers. The hydraulic components include a vertical hydraulic cylinder (1) and a lateral hydraulic cylinder (2). The lateral hydraulic cylinder (2) and the vertical hydraulic cylinder (1) are connected by an oil guide pipe (3). The bridge pier is equipped with a drive assembly that drives the rubber bearing (7) to rotate during the lateral tilting of the beam. The drive assembly includes a support rod (14), a one-way ratchet (22) is mounted on the rubber support (7), and a rack (23) that meshes with the one-way ratchet (22) is mounted on the pier. The upper part of the support rod (14) is equipped with a horizontally rotating slide rail (13), and a sliding slider (12) is installed on the slide rail (13). The slider (12) is fixedly installed on the beam. The rack (23) and the support rod (14) are connected by a connecting rope (11). The telescopic end of the lateral hydraulic cylinder (2) is in an extended state and corresponds to the periphery of the beam, while the telescopic end of the vertical hydraulic cylinder (1) is in a retracted state and is 0.2-2.0 cm away from the lower side of the beam.

2. The beam displacement device according to claim 1, characterized in that: The pier is equipped with a rotating guide wheel (10), and the rack (23) is located between the guide wheel (10) and the one-way ratchet (22). An elastic element (24) is installed at the end of the rack (23) away from the connecting rope (11).

3. The beam displacement device according to claim 1 or 2, characterized in that: It also includes a housing (16), the inner wall of which is provided with a sliding block (18) that is sealed and slides vertically. A sliding rod (17) is installed on the upper side of the sliding block (18). The sliding rod (17) slides through and extends to the outside of the housing (16). The end of the sliding rod (17) located outside the housing (16) is connected to the support rod (14) by a traction connector (15). A connecting hole is opened on the upper side of the housing (16). The connecting hole is connected to one end of the conduit (8). The other end of the conduit (8) faces between the rubber support (7) and the stainless steel plate (9).

4. The beam displacement device according to claim 3, characterized in that: It also includes a liquid bladder (21) containing silicone grease, the outlet of the liquid bladder (21) being connected to the inlet of one-way valve (20), the outlet of one-way valve (20) being connected to the upper part of the inner cavity of the box (16), and a one-way valve (2) being installed on the conduit (8) to allow the silicone grease in the box (16) to flow out in one direction.

5. The beam displacement device according to claim 4, characterized in that: A magnetic block (19) is fixed to the bottom side of the inner cavity of the box (16), the slider (18) is made of magnetic material, and the traction connector is a spring or elastic rope.

6. The beam displacement device according to claim 1, characterized in that: The lower end of the support rod (14) and the pier are connected by an elastic rubber block or a spring.

7. The beam displacement device according to claim 1, characterized in that: It also includes a housing (4), in which a sliding partition (26) is installed in the inner cavity of the housing (4) and the sliding partition (26) divides the housing (4) into a compressed air chamber and a hydraulic oil chamber. An opening is provided on the housing (4) to connect the hydraulic oil chamber. A push-button valve (25) is installed on the opening. The push-button valve (25) and the vertical hydraulic cylinder (1) are connected through an oil guide pipe (5). A U-shaped detection bracket (6) with an upward tendency is installed on the pier, and the detection bracket blocks the push-button valve (25). When the beam is detached, the detection bracket (6) moves upward and the detection bracket (6) and the push-button valve (25) are misaligned, and the push-button valve (25) changes from the closed state to the open state.

8. The beam displacement device according to claim 7, characterized in that: The push-button valve (25) is in the open state, and the vertical hydraulic cylinder (1) provides support to the beam body at 0.3-0.4 times the load on the beam body at the pier.

9. The beam displacement device according to claim 1, characterized in that: Both sides of the bridge pier are provided with anti-seismic blocks, and the lateral hydraulic cylinder (2) is installed on the anti-seismic blocks.

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