Bridge heightening pier column support replacing device

Abstract

The invention relates to a bridge heightening pier column support replacing device. The trolley track is distributed in the transverse bridge direction and is in butt joint with a pier stud, the flat car is arranged on the trolley track and is used for supporting a pier stud support, and the first traction structure is used for dragging the flat car to move on the trolley track. The pier column support limiting structures are arranged on the pier columns in a one-to-one correspondence mode, and the pier column support limiting structures are used for enabling the pier column supports to fall at set positions when the pier column supports are pulled to the pier columns from the flat car through the second traction structure. One end of the trolley track extends out of the cover beam, and the trolley track is erected on a track supporting frame. The invention provides a bridge heightening pier column support replacing device which is convenient to construct and is used for replacing pier column supports.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge maintenance, and in particular to a device for replacing a bridge pier support. Background Art

[0002] The structure of a bridge with a prefabricated deck is that two piers support a cap beam, with the cap beams distributed along the longitudinal direction of the bridge. Two pairs of bridge decks are supported on two adjacent cap beams, and the cap beams are supported on the piers through pier supports. During use, the pier supports may need to be replaced. In this case, the cap beam cannot be lifted too high, resulting in a narrow space under the bridge deck. The pier supports cannot be transferred between the piers and the cap beam by vertical lifting, and the pier supports cannot be easily moved to a position that meets the protection requirements, making it difficult to conveniently replace the pier supports. Summary of the Invention

[0003] The invention provides a bridge pier support replacement device which is easy to construct and is used for pier support replacement.

[0004] The above technical problems are solved by the following technical solutions: a device for replacing bridge pier supports, wherein the pier support is supported between the pier and the cap beam, and the cap beam is supported by at least two piers distributed in the transverse direction of the bridge, and is characterized in that it includes a trolley track connected to the pier and distributed in the transverse direction of the bridge, a flatbed truck supporting the pier support arranged on the trolley track, a first traction structure for pulling the flatbed truck on the trolley track, a second traction structure for pulling down the pier support on the flatbed truck, and a pier support limiting structure provided on the pier in a one-to-one correspondence, the pier support limiting structure is used to make the pier support fall to a set position when the second traction structure pulls the pier support from the flatbed truck to the pier, one end of the trolley track extends out of the cap beam, and the trolley track is erected on the track support The method for replacing pier column supports is as follows: Step 1, equipment installation: Install the pier column support replacement device in the construction area; Step 2, cap beam lifting: Using the pier columns as support, lift the cap beam away from the original pier column support via a jack; Step 3, remove the original pier column support; Step 4, install the new pier column support: Position the flatbed truck at the end where the trolley track extends out of the cap beam, transfer the new pier column support to the flatbed truck via the lifting equipment, tow the flatbed truck to the set position via the first traction structure, pull the new pier column support off the flatbed truck via the second traction structure, and under the action of the pier column support limiting structure, the new pier column falls to the set position on the pier column. The new pier column support is fixed to the pier column, causing the jack to lose its support for the cap beam, and the cap beam descends to support the new pier column support. This enables the replacement of pier column supports in a narrow space environment.

[0005] Preferably, the other end of the trolley track is aligned with the pier farthest from one end of the trolley track, the trolley track and the pier are distributed along the longitudinal direction of the bridge, and the trolley track is provided with a branch rail that connects the pier to the trolley track in a one-to-one correspondence; in the fourth step, when the new pier support needs to be transferred to that pier, the flatbed trolley changes its moving direction to run along the branch rail when it runs to align with the corresponding branch rail. This method can make it convenient to build the trolley track, because the part of the trolley track extending out of the cap beam requires reinforcement of the foundation to support the track, and the part of the trolley track located under the bridge deck can be supported by the pier foundation. This method can minimize the part of the trolley track outside the cap beam, so it is the most convenient. If the trolley track extends from both sides of the cap beam, and each trolley track is overlapped to correspond to two piers in a one-to-one correspondence, a large amount of foundation reinforcement is required.

[0006] Preferably, the flatbed trolley is provided with two rows of spherical support wheels distributed along the scale direction of the flatbed trolley, one row of spherical support wheels has two spherical support wheels, the distance between the two spherical support wheels in the same row of spherical support wheels is equal to the distance between the two rows of spherical support wheels, the trolley track includes two transverse slides supporting the two rows of spherical support wheels in a one-to-one correspondence, the branch rail includes two longitudinal slides docked with the transverse slides, a spherical pit is provided at the intersection of the two transverse slides and the longitudinal slide rail, the depth of the spherical pit is less than the radius of the spherical roller; when the flatbed trolley moves, when the spherical roller falls into the spherical pit, the force required for traction will increase, that is, a sense of frustration will be generated, which indicates that the flatbed trolley is aligned with the corresponding branch rail. It is convenient to know whether the flatbed trolley is aligned with the branch rail.

[0007] Preferably, the first traction structure includes a trolley traction ring arranged on the flatbed trolley, a first hoist and a second hoist fixed on the trolley track, and the second traction structure includes the first hoist and a support traction ring arranged on the pier column support; the process of towing the new pier column support to the pier column is: installing the first hoist on the side of the pier column support installation position away from the trolley track, connecting the zipper of the second hoist to the trolley traction ring, the second hoist tows the flatbed trolley to align with the same support rail, removing the zipper of the second hoist from the trolley traction ring and then connecting the zipper of the first hoist to the trolley traction ring, pulling the trolley toward the lower pier column to the set position, removing the zipper of the first hoist from the trolley traction ring and then connecting it to the support traction ring, and towing the pier column support by the first guardrail to drop it up and down from the flatbed trolley, and under the action of the pier column support limiting structure, the position where the pier column support falls on the pier column is the set position.

[0008] The top end of the support leg is provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip, and the bottom end of the support leg is provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip. On the pier column, the support bar and the driving handle are perpendicular; when the support bar is in a horizontal state, the driving handle is placed flat on the outer surface of the limit baffle and the support bar extends out of the avoidance groove, and the driving handle is fixed to the limit baffle by the driving handle fixing bolt; the process of transferring the pier column support to the pier column through the pier column support limiting structure is as follows: the support bar is placed in a horizontal state, and the pier column support is transferred to be supported on the support bar under the traction action of the second traction structure, at this time, both sides of the pier column support are blocked by the limit baffle, and the pier column support is further moved on the support bar to abut against the front limit block, and the driving handle fixing bolt is removed. Under the pressure of the pier column support, the support bar rotates downward with the arc support surface of the through hole as the axis until it is accommodated in the avoidance groove, and the pier column support falls onto the metal base; the metal base is provided with an adhesive, and the pier column support is placed on the metal base and is bonded by the adhesive to achieve fixation. The provision of the metal base ensures that the ground level of the pier column support meets the requirements.

[0009] Preferably, the upper side wall of the driving handle connecting through-hole is provided with an upper arcuate supporting surface of the through-hole portion, and the upper surface of the connection between the driving handle and the support bracket is provided with an upper arcuate supporting surface of the driving handle portion. The upper arcuate supporting surface of the through-hole portion is concentrically abutted with the upper arcuate supporting surface of the driving portion, and the lower arcuate supporting surface of the driving handle portion is concentric with the upper arcuate supporting surface of the driving handle portion. This can improve the stability of the support bracket during rotation.

[0010] Preferably, the lower surface of the metal base is provided with a plurality of lower connecting rods fixed in the upper surface of the pier column, and the upper surface is provided with a plurality of upper connecting rods fixed in the lower surface of the pier column support, so as to improve the fixing reliability.

[0011] Preferably, the metal base is fixed to the upper surface of the pier column via a lower adhesive layer of the base portion and to the lower surface of the pier column support via an upper adhesive layer of the base portion; the lower connecting rod is fixed to the pier column via an adhesive layer of the lower connecting rod portion, and the upper connecting rod is fixed to the pier column support via an adhesive layer of the upper connecting rod portion; a heating wire is provided within the metal base, extending into the upper and lower connecting rods; the melting points of the lower, upper, and lower connecting rod adhesive layers of the base portion are all between 100° C. and 150° C.; when the pier column support needs to be replaced a second time, the heating wire is energized to melt the lower and upper adhesive layers of the base portion, the pier column support, the lower and upper connecting rod adhesive layers, and the pier column support and the pier column support limiting structure are then removed, and the pier column support limiting structure can then be reused while only the pier column support is replaced. This facilitates the removal of the old pier column support when replacing the pier column support.

[0012] Preferably, the upper surface of the pier is provided with a central protrusion of the pier portion, and the lower surface of the pier support is provided with a connecting recess that is sleeved over the central protrusion of the pier portion. The central protrusion of the pier portion is sleeved with an inflatable sealing ring that passes through the connecting recess, and the air outlet sealing ring is provided with an air valve that communicates with the outer surface of the pier. Before the pier support is sleeved over the central protrusion of the pier portion, the inflatable sealing ring is in a deflated state. During assembly, the inflatable sealing ring is inflated to elastically secure the pier support and the central protrusion of the pier portion together. This allows for convenient and reliable assembly and disassembly, and provides excellent shock absorption.

[0013] Preferably, it also includes a cap beam inclination detection structure, which includes a horizontal rod located below the cap beam and connected to the trolley track through a connecting frame, a vertical scale rod passing through the horizontal connecting rod, and a vertical pointer support rod passing through the horizontal connecting rod, wherein the vertical pointer support rod is connected to a pointer indicating the scale on the vertical scale rod, and when the upper ends of the vertical scale rod and the vertical pointer support rod are located on the same plane, the scale value on the vertical scale rod aligned with the pointer is zero, and the scale value on the vertical scale rod is zero. To determine the beam's inclination angle, the vertical scale rod and vertical pointer support rod are distributed along the transverse direction of the bridge. The vertical scale rod is equipped with a scale rod lifting spring that drives the vertical scale rod upward, and the vertical pointer support rod is equipped with a vertical pointer support rod lifting spring that drives the vertical pointer support rod upward. When the cap beam is lifted, the cap beam inclination angle is detected by the cap beam inclination detection structure, and the lifting speed at both ends of the cap beam is controlled to maintain the cap beam inclination angle at the set value and to determine whether the cap beam inclination angle is consistent with the angle before the pier support is installed. This improves the technical solution for obtaining the cap beam inclination angle in real time.

[0014] The present invention has the following advantages: it can be used to conveniently replace pier column supports. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic top view of the present invention in use after the bridge deck is removed; Figure 2 for Figure 1 A local enlarged schematic diagram of point A; Figure 3 for Figure 1 A local enlarged schematic diagram of point B; Figure 4 This is a schematic elevation diagram of the pier column support in use of the present invention when in place; Figure 5 for Figure 4 A local enlarged schematic diagram of point C; Figure 6 for Figure 4 An enlarged diagram of the upper part of the pier Figure 7 for Figure 6 A local enlarged schematic diagram of point D; Figure 8 This is an enlarged schematic diagram of the upper part of the pier column just after the pier column support is placed on the supporting bar; Figure 9 for Figure 8 A local enlarged schematic diagram of point E.

[0016] In the figure: pier support 1, pier 2, cap beam 3, trolley track 5, flatbed car 6, track support frame 4, support rail 7, spherical support wheel 8, horizontal slide 9, longitudinal slide 10, spherical pit 11, trolley traction ring 12, first hoist 13, second hoist 14, support traction ring 15, metal base 16, front limit block 17, limit retaining edge 18, avoidance groove 19, drive handle connecting hole 20, support support bar 21, drive handle 22, lower arc support surface of drive handle 23, lower arc support surface of through hole 24, drive handle fixing bolt 25, through hole Upper arc support surface 26, upper arc support surface 27 of driving handle, lower connecting rod 28, upper connecting rod 29, lower rubber layer 30 of base, upper rubber layer 31 of base, rubber layer 32 of lower connecting rod, rubber layer 33 of upper connecting rod, heating wire 34, central protrusion 35 of pier part, connecting pit 36, inflatable sealing ring 37, cap beam inclination detection structure 38, connecting frame 39, horizontal rod 40, vertical scale rod 41, vertical pointer support rod 42, scale 43, pointer 44, scale rod lifting spring 45, vertical pointer support rod lifting spring 46, jack 47. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1 to 9 A device for replacing pier supports for bridges with elevated columns. A pier support 1 is supported between a pier 2 and a cap beam 3, which is supported by at least two piers distributed transversely to the bridge. The device includes a trolley track 5 that interfaces with the piers and is distributed transversely to the bridge, a flatbed truck 6 that supports the pier support and is mounted on the trolley track, a first traction structure that pulls the flatbed truck along the trolley track, a second traction structure that pulls down the pier support from the flatbed truck, and pier support limiting structures that correspond to the piers. The pier column support limiting structure is used to make the pier column support fall to the set position when the second traction structure pulls the pier column support from the flatbed car to the pier column, and one end of the trolley track extends out of the cap beam along the transverse bridge direction, and the trolley track is set on the track support frame 4; the method for replacing the pier column support is as follows: the first step, equipment installation: install the pier column support replacement device in the construction area; the second step, cap beam jacking: with the pier column as the support, the cap beam is lifted away from the original pier column support by the jack 47; the third step, dismantling the original pier column support; the third step, Step 4: Install the new pier column support: Position the flatbed truck at the end where the trolley track extends out of the cap beam. Transfer the new pier column support to the flatbed truck via the lifting device. Use the first traction structure to tow the flatbed truck to the set position. Use the second traction structure to pull the new pier column support off the flatbed truck. Under the action of the pier column support limiting structure, the new pier column falls to the set position on the pier column. Fix the new pier column support to the pier column, so that the jack loses its support for the cap beam, and the cap beam descends to support the new pier column support. In this embodiment, one cap beam is supported by two pier columns.

[0019] The other end of the trolley track is aligned with the pier farthest from the cap beam of the trolley track. The trolley track and the pier are distributed along the longitudinal direction of the bridge. The trolley track is provided with two branch rails 7 that connect the two piers to the trolley track one by one. In the fourth step, when the new pier support needs to be transferred to that pier, the flatbed trolley will change its moving direction to run along the branch rail when it runs to align with the corresponding branch rail. The flatbed trolley is provided with two rows of spherical support wheels 8 distributed along the scale direction of the flatbed trolley. A row of spherical support wheels has two spherical support wheels, and the distance between the two spherical support wheels in the same row is equal to the distance between the two rows of spherical support wheels. The trolley track includes two horizontal slides 9 that support two rows of spherical support wheels in a one-to-one correspondence. The support rail includes two longitudinal slides 10 that are connected to the horizontal slides. The intersection of the two horizontal slides and the longitudinal slide is provided with a spherical pit 11. The depth of the spherical pit is less than the radius of the spherical roller. When the flatbed trolley moves, when the spherical roller falls into the spherical pit, the force required for traction will increase, which will produce a sense of frustration. At this time, it means that the flatbed trolley is aligned with the corresponding support rail. The first traction structure includes a trolley traction ring 12, a first hoist 13 and a second hoist 14 fixed on the trolley track, which is provided on the flatbed trolley. The second traction structure includes a first hoist and a support traction ring 15 provided on the pier support. The process of pulling the new pier support to the pier is as follows: install the first hoist on the side of the pier support installation position away from the trolley track (specifically, install it on the pier support limit structure), connect the zipper of the second hoist to the trolley traction ring, and the second The hoist pulls the flatbed trolley to align with the same support rail, removes the zipper of the second hoist from the trolley traction ring, and then connects the zipper of the first hoist to the trolley traction ring. The trolley is pulled to the set position by the first hoist toward the lower pier column. The zipper of the first hoist is removed from the trolley traction ring and then connected to the support traction ring. The pier column support is pulled up and down from the flatbed trolley by the first guardrail. Under the action of the pier column support limiting structure, the position where the pier column support falls on the pier column is the set position. The pier column support limiting structure includes a metal base 16 fixed to the upper end face of the pier column, a front limiting block 17 set on one side of the metal base, and two limiting retaining edges 18 set on both sides of the metal base. When the pier column support simultaneously abuts against the limiting block and the front limiting block, the position of the pier column support on the pier column meets the requirements.The lower end of the inner surface of the limit baffle is provided with an avoidance groove 19, the upper end of the avoidance groove is provided with a driving handle connecting through hole 20, a vertical support bar 21 is provided in the avoidance groove, the support bar can be completely accommodated in the avoidance groove, the support bar is provided with a driving handle 22 extending to the outside of the limit baffle through the driving handle connecting through hole, the lower surface of the connection between the driving handle and the support bar is provided with a lower arc support surface 23 of the driving handle part, the lower side wall of the driving handle connecting through hole is provided with a lower arc support surface 24 of the through hole part, the lower arc support surface of the driving handle part is supported on the arc support surface of the through hole part, the support bar and the driving handle are perpendicular; when the support bar is in a horizontal state, the driving handle is placed flat on the outer surface of the limit baffle and the support bar extends out of the avoidance groove, and the driving handle through hole The driving handle fixing bolt 25 is fixed together with the limit baffle; the process of transferring the pier column support to the pier column through the pier column support limiting structure is: make the support bar in a horizontal state, and transfer the pier column support to the support bar under the traction action of the second traction structure. At this time, the two sides of the pier column support are blocked by the limit baffle, and the pier column support is further moved on the support bar to abut against the front limit block, and the driving handle fixing bolt is removed. Under the pressure of the pier column support, the support bar rotates downward with the arc support surface of the through hole as the axis until it is accommodated in the avoidance groove, and the pier column support falls onto the metal base; an adhesive is provided on the metal base, and the pier column support is placed on the metal base and is bonded by the adhesive to achieve fixation. The upper sidewall of the drive handle connecting hole is provided with an upper arcuate support surface 26 for the through hole portion. The upper surface of the connection between the drive handle and the support bar is provided with an upper arcuate support surface 27 for the drive handle portion. The upper arcuate support surface of the through hole portion is concentrically abutted with the upper arcuate support surface of the drive portion, and the lower arcuate support surface of the drive handle is concentric with the upper arcuate support surface of the drive handle portion. The lower surface of the metal base is provided with several lower connecting rods 28 fixed to the upper surface of the pier column, and the upper surface is provided with several upper connecting rods 29 fixed to the lower surface of the pier column support. The metal base is fixed to the upper surface of the pier through the lower adhesive layer 30 of the base and to the lower surface of the pier support through the upper adhesive layer 31 of the base. The lower connecting rod is fixed to the pier through the lower connecting rod adhesive layer 32, and the upper connecting rod is fixed to the pier support through the upper connecting rod adhesive layer 33. A heating wire 34 is provided in the metal base, and the heating wire extends into the upper connecting rod and the lower connecting rod; the melting points of the lower adhesive layer of the base, the upper adhesive layer of the base and the lower connecting rod adhesive layer are all between 100°C and 150°C; when the pier support needs to be replaced for the second time, the heating wire is energized to melt the lower adhesive layer of the base, the upper adhesive layer of the base and the pier support, the lower connecting rod adhesive layer and the upper connecting rod adhesive layer, and then the pier support and the pier support limiting structure are removed, and then the pier support limiting structure is reused and only the pier support is replaced. The upper surface of the pier is provided with a central protrusion 35 of the pier part, and the lower surface of the pier support is provided with a connecting pit 36 ​​which is sleeved on the central protrusion of the pier part. The central protrusion of the pier part is sleeved with an inflatable sealing ring 37 which is inserted into the connecting pit, and the air outlet sealing ring is provided with an air valve connected to the outer surface of the pier.Before the pier column support is sleeved onto the central protrusion of the pier column part, the inflatable sealing ring is in a deflated state. When assembled, the inflatable sealing ring is inflated so that the pier column support and the central protrusion of the pier column part are elastically fixed together. It also includes a cap beam inclination detection structure 38. The cap beam inclination detection structure includes a horizontal rod 40 located below the cap beam and connected to the trolley track through a connecting frame 39, a vertical scale rod 41 passing through the horizontal connecting rod, and a vertical pointer support rod 42 passing through the horizontal connecting rod. The vertical pointer support rod is connected to a pointer 44 that indicates a scale 43 on the vertical scale rod. When the upper ends of the vertical scale rod and the vertical pointer support rod are on the same plane, the scale value on the vertical scale rod where the pointer is aligned is zero, and the scale value on the vertical scale rod is the inclination angle of the cap beam. The vertical scale rod and the vertical pointer support rod are distributed along the transverse direction of the bridge; the vertical scale rod is provided with a scale rod lifting spring 45 for driving the vertical scale rod to move upward, and the vertical pointer support rod is provided with a vertical pointer support rod lifting spring 46 for driving the vertical pointer support rod to move upward; when lifting the cap beam, the inclination angle of the cap beam is obtained through the cap beam inclination detection structure, and the lifting speed at both ends of the cap beam is controlled so that the inclination angle of the cap beam is maintained at the set value and whether the inclination angle of the cap beam is consistent with the angle before the pier support is installed is known.

Claims

1. A device for replacing a bridge pier support, wherein the pier support is supported between the pier and the cap beam, and the cap beam is supported by at least two piers distributed transversely to the bridge, characterized in that: It includes a trolley track connected to the pier column and distributed along the transverse direction of the bridge, a flatbed truck supporting the pier column support arranged on the trolley track, a first traction structure to pull the flatbed truck to move on the trolley track, a second traction structure to pull down the pier column support located on the flatbed truck, and a pier column support limiting structure arranged on the pier column in a one-to-one correspondence. The pier column support limiting structure is used to make the pier column support fall to a set position when the second traction structure pulls the pier column support from the flatbed truck to the pier column. One end of the trolley track extends out of the cap beam, and the trolley track is mounted on a track support frame.

2. The bridge pier support replacement device according to claim 1 is characterized in that: The other end of the trolley track is aligned with the pier farthest from one end of the trolley track, the trolley track and the pier are distributed along the longitudinal direction of the bridge, and the trolley track is provided with a branch rail that connects the pier to the trolley track one by one; in the fourth step, when the new pier support needs to be transferred to that pier, the flatbed trolley changes its moving direction to run along the branch rail when it runs to be aligned with the corresponding branch rail.

3. The bridge pier support replacement device according to claim 2 is characterized in that: The flatbed trolley is provided with two rows of spherical support wheels distributed along the scale direction of the flatbed trolley, one row of spherical support wheels has two spherical support wheels, the distance between the two spherical support wheels in the same row is equal to the distance between the two rows of spherical support wheels, the trolley track includes two transverse slide grooves that support the two rows of spherical support wheels in a one-to-one correspondence, the support rail includes two longitudinal slide grooves connected to the transverse slide grooves, and a spherical pit is provided at the intersection of the two transverse slide rails and the longitudinal slide rail, and the depth of the spherical pit is less than the radius of the spherical roller.

4. The bridge pier support replacement device according to claim 2 or 3, characterized in that: The first traction structure includes a trolley traction ring arranged on a flat trolley, a first hoist and a second hoist fixed on the trolley track, and the second traction structure includes the first hoist and a support traction ring arranged on a pier support.

5. The bridge pier support replacement device according to claim 1, 2 or 3, characterized in that: The pier column support limiting structure includes a metal base fixed to the upper end surface of the pier column, a front limiting block arranged on one side of the metal base and two limiting edges arranged on both sides of the metal base. When the pier column support is supported by the limiting baffle and the front limiting block at the same time, the position of the pier column support on the pier column meets the requirements, the lower end of the inner surface of the limiting baffle is provided with an avoidance groove, the upper end of the avoidance groove is provided with a driving handle connecting through hole, a vertical support bar is provided in the avoidance groove, the support bar can be completely accommodated in the avoidance groove, and the support bar A driving handle is provided that extends to the outside of the limit baffle through the driving handle connecting through hole, and the lower surface of the connection between the driving handle and the support bracket is provided with a lower arc support surface of the driving handle portion, and the lower side wall of the driving handle connecting through hole is provided with a lower arc support surface of the through hole portion, and the lower arc support surface of the driving handle portion is supported on the arc support surface of the through hole portion, and the support bracket and the driving handle are perpendicular; when the support bracket is in a horizontal state, the driving handle is placed flat on the outer surface of the limit baffle and the support bracket extends out of the avoidance groove, and the driving handle is fixed to the limit baffle by a driving handle fixing bolt.

6. The bridge pier support replacement device according to claim 5 is characterized in that: The upper side wall of the driving handle connecting through hole is provided with an upper arc support surface of the through hole portion, and the upper surface of the connection between the driving handle and the support bracket is provided with an upper arc support surface of the driving handle portion. The upper arc support surface of the through hole portion is concentrically abutted with the upper arc support surface of the driving portion, and the lower arc support surface of the driving handle portion is concentric with the upper arc support surface of the driving handle portion.

7. The bridge pier support replacement device according to claim 5 is characterized in that: The lower surface of the metal base is provided with a plurality of lower connecting rods fixed in the upper surface of the pier column, and the upper surface is provided with a plurality of upper connecting rods fixed in the lower surface of the pier column support.

8. The bridge pier support replacement device according to claim 7 is characterized in that: The metal base is fixed to the upper surface of the pier through the lower rubber layer of the base and to the lower surface of the pier support through the upper rubber layer of the base. The lower connecting rod is fixed to the pier through the rubber layer of the lower connecting rod, and the upper connecting rod is fixed to the pier support through the rubber layer of the upper connecting rod. A heating wire is provided in the metal base, and the heating wire extends into the upper connecting rod and the lower connecting rod. The melting points of the lower rubber layer of the base, the upper rubber layer of the base and the rubber layer of the lower connecting rod are all between 100°C and 150°C.

9. The device for replacing a high-pier support of a bridge according to claim 5, characterized in that: The upper surface of the pier is provided with a central protrusion of the pier part, the lower surface of the pier support is provided with a connecting pit which is sleeved on the central protrusion of the pier part, the central protrusion of the pier part is sleeved with an inflatable sealing ring which is inserted into the connecting pit, and the air outlet sealing ring is provided with an air valve connected to the outer surface of the pier.

10. The bridge pier support replacement device according to claim 1, 2 or 3, characterized in that: It also includes a cap beam inclination detection structure, which includes a horizontal rod located below the cap beam and connected to the trolley track through a connecting frame, a vertical scale rod passing through the horizontal connecting rod, and a vertical pointer support rod passing through the horizontal connecting rod. The vertical pointer support rod is connected to a pointer indicating the scale on the vertical scale rod. When the upper ends of the vertical scale rod and the vertical pointer support rod are located on the same plane, the scale value on the vertical scale rod where the pointer is aligned is zero, and the scale value on the vertical scale rod is the inclination angle of the cap beam. The vertical scale rod and the vertical pointer support rod are distributed along the transverse direction of the bridge; the vertical scale rod is provided with a scale rod lifting spring for driving the vertical scale rod to move upward, and the vertical pointer support rod is provided with a vertical pointer support rod lifting spring for driving the vertical pointer support rod to move upward.

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