Steel bar protective layer thickness control device of bridge pier column

Abstract

The utility model belongs to the technical field of bridge construction, and discloses a thickness control device for a reinforcing steel bar protective layer of a bridge pier column, which comprises a reinforcing steel bar adjusting and controlling component, a reinforcing steel bar adjusting and controlling component and a reinforcing steel bar adjusting and controlling component, a reinforcing steel bar radial position adjustable assembly is mounted in the adjustable assembly mounting hole and comprises an assembling pipe, a rack, an adjusting gear and a driving rod, and one end of the assembling pipe penetrates through and is fixed in the adjustable assembly mounting hole; one end of the rack slidably penetrates into the assembly pipe, and the other end of the rack can abut against the inner side wall of the pier column cylinder mold; an adjusting gear is rotationally mounted in the assembly pipe and is meshed with the rack; a connecting block is installed at the other end of the assembling pipe, a clamping ring is hinged to the side wall of the connecting block, and the other end of the clamping ring can be tightly clamped to the outer side wall of the steel bar. The adjusting control assembly is convenient to install and adjust, the vertical stability of installation is guaranteed, and the operation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field more specifically relates to a kind of reinforcing bar cover thickness control device of bridge pier. BACKGROUND

[0002] Bridge pier construction project is a part of the whole bridge engineering, its quality affects whether the overall bridge is safe and durable, in bridge pier construction project, reinforcing bar cover construction is an indispensable step, it has certain relationship with the durability of bridge pier, fire resistance, freeze resistance and pressure bearing, it can be seen that the thickness of reinforcing bar cover also affects construction quality. In bridge pier construction, the coordinate point of pier body is positioned by total station on pile cap, then the template of coordinate installation pier body is installed, after template installation, reinforcing bar is erected inside template, then concrete is poured, reinforcing bar needs to exist space between the inner wall of template, so as to avoid reinforcing bar exposure, after pouring concrete, the concrete between the outermost wall of pier body and surface inner reinforcing bar is cover.

[0003] Through retrieval, China new type patent, application No.202322803927.6 discloses a kind of reinforcing bar cover thickness control device for bridge pier, including adjusting mechanism and locking mechanism, when the thickness of reinforcing bar cover is adjusted by cooperating assembly, the position of first screw rod in cooperating assembly is limited and constrained by locking mechanism, simultaneously, it is also welded by welding arc plate to mounting frame, and it is fixed on reinforcing bar, although it improves firmness, but there is the limitation condition that welding equipment is needed to complete welding fixation at the same time, especially in the process of construction bridge pier, preparation welding equipment complicates construction process.

[0004] Therefore, how to provide a kind of device without other equipment directly fixed with reinforcing bar and can conveniently adjust the thickness of reinforcing bar cover is the problem that the person skilled in the art needs to solve urgently. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a kind of reinforcing bar cover thickness control device of bridge pier, by setting snap ring, with reinforcing bar direct clamping and fixing, without using other auxiliary equipment to be fixed, convenient to operate, improve the convenience of device installation

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of reinforcing bar cover thickness control device of bridge pier, including, pier cylinder mould, multiple steel bars forming reinforcing bar cover are arranged axially parallel and radially movable along the pier cylinder mould;It is characterized by further comprising: reinforcing bar adjusting control assembly, the reinforcing bar adjusting control assembly includes:

[0008] The support is provided with a reinforcing steel bar positioning plate at both upper and lower ends, the reinforcing steel bar positioning plate is in abutment with the outer wall surface of the reinforcing steel bar, and an adjustable assembly mounting hole is arranged in the middle of the support and arranged along the radial direction of the reinforcing steel bar;

[0009] The reinforcing steel bar radial position adjustable assembly comprises an assembly pipe, a rack, an adjusting gear and a driving rod, one end of the assembly pipe penetrates through the adjustable assembly mounting hole and is fixed therewith; one end of the rack penetrates into the assembly pipe and is in sliding connection with the inner wall surface of the assembly pipe, and the other end can extend to the outside of the assembly pipe and abut against the inner wall of the pier cylinder mold; a gear seat is fixed on the inner wall of the assembly pipe, the adjusting gear is rotatably installed on the gear seat and is in engagement with the rack, a through hole is coaxially arranged on the wall of the assembly pipe and corresponds to the adjusting gear, and one end of the driving rod can be detachably connected with the shaft hole of the adjusting gear through the through hole to drive the rack to extend or retract so as to position the thickness of the reinforcing steel bar protective layer;

[0010] The other end of the assembly pipe is provided with a connecting block, and one end of the clamping ring is hingedly installed on the side wall of the connecting block and the other end can be tightly clamped with the outer wall of the reinforcing steel bar.

[0011] Compared with the prior art, the reinforcing steel bar protective layer thickness control device for the pier of the bridge is provided, the pier cylinder mold is installed at the preset position on the pier cap, and a plurality of reinforcing steel bars are arranged in the pier cylinder mold; first, the adjustable device for the thickness of the reinforcing steel bar protective layer is installed on the reinforcing steel bar, wherein the reinforcing steel bar radial position adjustable assembly and the clamping ring connected with the reinforcing steel bar radial position adjustable assembly are installed on one side wall of the support, through the cooperation of the three, the support is first fixed, the clamping ring is coaxially attached to the outer wall of the reinforcing steel bar and locked, at the same time, the two reinforcing steel bar positioning plates of the support are coaxially attached to the outer wall of the reinforcing steel bar, which can ensure that the reinforcing steel bar radial position adjustable assembly is always perpendicular to the axial direction of the reinforcing steel bar, and the fixing of the support is completed at this time; then the reinforcing steel bar radial position adjustable assembly is controlled, the driving rod is controlled to rotate the adjusting gear, the rack is driven to move to the outside of the assembly pipe, and the total length of the barrel length of the assembly pipe, the width of the connecting block and the extension length of the rack is the thickness of the reinforcing steel bar protective layer after the preset distance is adjusted; finally, the reinforcing steel bar with the adjusting mechanism is axially placed in the mold along the pier cylinder mold, the extension end of the rack abuts against the inner wall of the pier cylinder mold, the plurality of reinforcing steel bars are arranged in the circumferential direction, the bottom end of the reinforcing steel bar is embedded into the top of the cap for fixation, the stability is improved, then the adjustable device is removed from the reinforcing steel bar, cement is poured, and the pier cylinder mold can ensure the shape of the reinforcing steel bar protective layer; therefore, the device has the beneficial effects of convenient fixing and convenient adjustment, does not need to use other auxiliary tools for fixation on the reinforcing steel bar, can be installed through the two reinforcing steel bar positioning plates, ensures the vertical stability of the device installation, is simple to operate and reduces the operation cost.

[0012] Further, the reinforcing steel radial position adjustable assembly further comprises a locking plate fixed on the side wall of the assembly pipe far away from the reinforcing steel at the direction of the rack movement, and the side end face of the locking plate is parallel to the side wall face of the rack and provided with a screw hole, and the tail end of the screw is fastened to the screw hole to abut against the side wall face of the rack.

[0013] The beneficial effects of the above technical scheme are that the stability of the reinforcing steel radial position adjustable assembly is enhanced by the fastening of the locking plate, the rack position is prevented from being deviated due to vibration or external force in the construction process, the uniformity and stability of the bridge pier column reinforcing steel protective layer are ensured, and the thickness of the reinforcing steel protective layer meets the design requirements.

[0014] Further, the shaft hole of the adjusting gear is a square hole, the cross section of the driving rod is a square surface and is adapted to be clamped with the square hole, and the through hole is a circular hole and its area is not less than the area of the circumscribed circle of the square hole.

[0015] The beneficial effects of the above technical scheme are that the square hole and the square surface provide a larger contact area, compared with the circular hole and the circular rod, the square cooperation can provide better shear resistance and torque transmission capacity, thereby enhancing the stability and strength of the reinforcing steel radial position adjustable assembly, and effectively preventing the driving rod from rotating or mispositioning in the shaft hole, ensuring the accuracy and reliability of the adjustment; the area of the through hole is greater than or equal to the area of the circumscribed circle of the square hole, so that the square cross section of the driving rod can be inserted from the through hole and clamped with the shaft hole when the square shaft hole of the gear is rotated to any angle.

[0016] Further, a stop plate is vertically installed at one end of the rack close to the connecting block, and the side wall face of the stop plate can abut against the outer edge end of the adjusting gear.

[0017] The beneficial effects of the above technical scheme are that the stop plate limits the movement range of the rack, preventing the rack from being excessively extended or retracted during adjustment, thereby avoiding over-adjustment or under-adjustment.

[0018] Further, an arc-shaped abutting plate is fixedly installed at the extended end of the rack, and the outer arc face of the arc-shaped abutting plate is adapted to the shape of the inner side wall face of the pier cylindrical mold and abuts against and supports the inner side wall face.

[0019] The beneficial effects of the above technical scheme are that the arc-shaped abutting plate is adapted to the shape of the inner side wall face of the pier cylindrical mold, which can provide better contact and support and increase the stability of the structure.

[0020] Further, the top end face of the rack is further provided with a scale line.

[0021] The beneficial effect of the above technical solution is that the construction personnel can quickly determine the current position of the rack through the scale line, thereby accurately adjusting the thickness of the protective layer and improving the accuracy of construction.

[0022] Further, the clamping ring comprises an arc-shaped plate one and an arc-shaped plate two, one end of the arc-shaped plate one and the arc-shaped plate two is provided with a hinge hole and is coaxially arranged, a connecting groove is formed in the side wall of the one end of the clamping ring close to the connecting block, a hinge column is vertically installed in the connecting groove, the arc-shaped plate one and the arc-shaped plate two are rotatably installed on the hinge column through the hinge hole; the other end of the arc-shaped plate one and the arc-shaped plate two is integrally provided with a convex plate with a screw hole along the radial direction of the outer side wall, the side walls of the two convex plates are abuttingly arranged, and the two screw holes are correspondingly communicated, and the two convex plates are connected by a fastening bolt.

[0023] The beneficial effect of the above technical solution is that the arc-shaped plate one and the arc-shaped plate two are rotatably installed on the hinge column through the hinge hole, which allows the arc-shaped plate to rotate within a certain range, providing flexibility to adapt to steel bars of different diameters. The two convex plates are connected by a fastening bolt, which provides strong fastening capability to ensure that the clamping ring remains stable under load.

[0024] Further, the steel bar positioning plate comprises a mounting seat and an abutting plate, one side end face of the mounting seat is fixedly connected with the support, the abutting plate is an arc-shaped plate, the outer arc end of the abutting plate is detachably installed on the other side end face of the mounting seat, and the inner arc end can abut against the outer side wall of the steel bar.

[0025] The beneficial effect of the above technical solution is that the outer arc end of the abutting plate is detachably installed on the other side end face of the mounting seat, which allows the steel bar positioning plate to be adjusted according to different steel bar sizes, improving the flexibility and adaptability of installation.

[0026] Further, the abutting plate is a plurality of arc plates with different radii to correspond to steel bars of different cross-sectional diameters.

[0027] The beneficial effect of the above technical solution is that by providing abutting plates with different radii, steel bars of different diameters can be accommodated, increasing the versatility and adaptability of the steel bar positioning plate. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creating any creative labor.

[0029] Figure 1 The structural schematic diagram of the steel bar installation position is provided.

[0030] Figure 2 The three-dimensional structural schematic diagram of the steel bar adjusting and controlling assembly is provided.

[0031] Figure 3 The Figure 2 The sectional view structural schematic diagram.

[0032] Wherein, 1 - support, 11 - steel bar positioning plate, 111 - mounting seat, 112 - abutment plate, 2 - steel bar radial position adjustable assembly, 21 - assembly pipe, 22 - adjusting gear, 23 - rack, 231 - arc abutment plate, 24 - driving rod, 25 - locking plate, 26 - stop plate, 3 - clamping ring, 31 - arc plate one, 32 - arc plate two, 33 - convex plate, 34 - fastening bolt, 4 - pier cylinder mold, 5 - connecting block, 51 - connecting groove, 52 - hinged column, 100 - pier pile cap, 101 - steel bar. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0034] The utility model discloses a kind of reinforcing bar cover thickness control devices of bridge pier column, including, pier cylinder mould 4, multiple forming steel bar cover's steel bars 101 are arranged axially parallel along pier cylinder mould 4 and radially movable;Its characterized in that further includes: reinforcing bar adjusting control assembly, reinforcing bar adjusting control assembly includes: support 1, steel bar positioning plate 11 is fixed in the upper and lower ends of support 1, steel bar positioning plate 11 is abutted with the outer lateral wall surface of steel bar 101, adjustable assembly mounting hole along the radial direction of steel bar is set in the middle part of support 1;Adjustable assembly mounting hole is equipped with steel radial position adjustable assembly, steel radial position adjustable assembly includes assembly pipe 21, rack 23, adjusting gear 22 and driving rod 24, one end of assembly pipe 21 penetrates adjustable assembly mounting hole and is fixed with it;Rack 23 one end penetrates into assembly pipe 21 and is slidably connected with its inner wall surface, and the other end can extend to the outside of assembly pipe 21 and abut with the inner lateral wall of pier cylinder mould 4;Gear base is fixed in the inner wall of assembly pipe 21, adjusting gear 22 is rotatably installed on gear base and is engaged with rack 23, through hole is coaxially set on the pipe wall of assembly pipe 21 corresponding adjusting gear 22, one end of driving rod 24 can pass through through hole and be detachably connected with the shaft hole of adjusting gear 22 to drive rack 23 telescopic to position the thickness of steel bar cover;Another end of assembly pipe 21 is equipped with connecting block 5, clamping ring 3 is hingedly installed on the lateral wall of connecting block 5, and the other end of clamping ring 3 can be tightly clamped with the outer lateral wall of steel bar 101.

[0035] Other embodiments of the utility model in reinforcing bar radial position adjustable assembly 2, reinforcing bar radial position adjustable assembly 2 further includes locking plate 25, locking plate 25 is fixed on the one end lateral wall of assembly pipe 21 away from steel bar 101 along the direction of rack 23 movement, one side end surface of locking plate 25 can be parallel with the lateral wall surface of rack 23 and is provided with screw hole on it, and can be screwed in screw hole by fastening screw to make the tail end of screw abut with the lateral wall surface of rack 23 and fasten.Tightening effect of locking plate 25 can enhance the stability of entire reinforcing bar radial position adjustable assembly 2, prevent the position of rack 23 from deviating due to vibration or external force in construction process, to ensure the uniformity and stability of bridge pier column steel bar cover, to ensure that the thickness of steel bar cover meets the design requirements.

[0036] The utility model discloses a specific embodiment about the adjusting gear 22, the axle hole of adjusting gear 22 is square hole, the section of drive rod 24 is square face and is matched with square hole and inserts, the through -hole is circular hole and its area is not less than the circumscribed circle area of square hole. The cooperation of square hole and square face provides greater contact area, compared with circular hole and circular rod, square cooperation can provide better shear resistance and torque transmission capacity, thereby enhancing the stability and strength of the whole reinforcing radial position adjustable assembly, can also effectively prevent drive rod 24 from rotating or misplacement in axle hole, ensure the accuracy and reliability of adjustment, make the area of through -hole greater than or equal to the circumscribed circle area of square hole, make the square axle hole of gear rotate to any angle, and square section drive rod 24 can be inserted from the through -hole and be connected in axle hole.

[0037] Specifically, the axle hole of the gear can also be a pentagon, a hexagon, or other polygons, and an ellipse, all of which can improve the accuracy and reliability of the drive rod 24 driving and adjusting the gear.

[0038] In the above embodiment, the stop plate 26 is vertically installed on one end of the rack 23 close to the connecting block 5, and the side wall of the stop plate 26 can abut against the outer edge end of the adjusting gear 22. The stop plate 26 limits the movement range of the rack 23, preventing the rack 23 from overextending during adjustment, thereby avoiding over-adjustment or under-adjustment.

[0039] In the above embodiment, the protruding end of the rack 23 is fixedly installed with an arc-shaped abutment plate 231, and the outer arc surface of the arc-shaped abutment plate 231 is adapted to the shape of the inner side wall of the pier cylinder mold 4 and abuts against it. The arc-shaped abutment plate 231 is adapted to the shape of the inner side wall of the pier cylinder mold 4, providing better contact and support and increasing the stability of the structure.

[0040] In the above embodiment, the rack 23 is also provided with a scale line on the top end surface. The construction personnel can quickly determine the current position of the rack 23 through the scale line, thereby accurately adjusting the protective layer thickness and improving the construction precision.

[0041] In an embodiment of the utility model, the clamping ring 3 comprises an arc plate one 31 and an arc plate two 32, the arc plate one 31 and the arc plate two 32 are coaxially arranged and are provided with hinge holes at one end, a connecting groove 51 is formed on the side wall of the one end of the clamping ring 3, a hinge column 52 is vertically installed in the connecting groove 51, the arc plate one 31 and the arc plate two 32 are rotatably installed on the hinge column 52 through the hinge holes; a convex plate 33 with a screw hole is integrally installed on the other end of the arc plate one 31 and the arc plate two 32 along the radial direction, the side walls of the two convex plates 33 abut and are connected through the fastening bolt 34, and the two screw holes are correspondingly communicated. The arc plate one 31 and the arc plate two 32 are rotatably installed on the hinge column 52 through the hinge holes, which allows the arc plate to rotate within a certain range and provides flexibility to adapt to steel bars 101 of different diameters. The two convex plates 33 are connected through the fastening bolt 34, which provides strong fastening capacity and ensures that the clamping ring 3 remains stable under load.

[0042] In an embodiment of the utility model, the steel bar positioning plate 11 comprises a mounting seat 111 and an abutting plate 112, the mounting seat 111 is fixedly connected to the support 1 at one end surface, the abutting plate 112 is an arc plate, the outer arc end of the abutting plate 112 is detachably installed on the other end surface of the mounting seat 111, and the inner arc end can abut the outer side wall of the steel bar 101. The outer arc end of the abutting plate 112 is detachably installed on the other end surface of the mounting seat 111, which allows the steel bar positioning plate 11 to be adjusted according to different sizes of the steel bar 101 and improves the flexibility and adaptability of installation.

[0043] In the above embodiment, the abutting plate 112 is of different arc degrees, which corresponds to steel bars of different diameters. By providing abutting plates 112 of different arc degrees, the steel bar positioning plate 11 can be adapted to steel bars 101 of different diameters, thereby increasing the versatility and adaptability of the steel bar positioning plate 11.

[0044] The working principle of the steel bar cover thickness control device for a bridge pier column of the utility model is as follows:

[0045] In the bridge pier construction, the position of the pier on the pier cap is measured and positioned, and the pier cylinder mold is installed on the preset pier on the pier cap, and a plurality of steel bars are arranged in the pier cylinder mold, and the steel bars can be adjusted in the radial direction; first, an adjustable device for the forming thickness of the steel bar protection layer is installed on the steel bar, specifically, a steel bar radial position adjustable assembly is installed on one side wall of the support, and a clamping ring connected with the steel bar radial position adjustable assembly is installed on the support, through cooperation of the three, the support is first fixed, the clamping ring is coaxially attached to the outer wall of the steel bar, and is screwed and locked, at the same time, the two steel bar positioning plates of the support are coaxially attached to the outer wall of the steel bar, so that the steel bar radial position adjustable assembly and the steel bar are always kept in a vertical state, at this time, the fixing of the support is completed; then the steel bar radial position adjustable assembly is controlled, the driving rod is rotated to adjust the gear, the rack is driven to move to the outside of the assembly pipe, and the total length of the pipe body of the assembly pipe, the width of the connecting block and the extension length of the rack is the thickness of the steel bar protection layer, finally, the steel bar with the adjusting mechanism is axially placed in the mold along the pier cylinder mold, so that the arc-shaped abutting plate at the end of the rack abuts against the inner wall of the pier cylinder mold, a plurality of steel bars are arranged in the circumferential direction, the bottom end of the steel bar is embedded into the top of the cap for fixation, the stability is improved, then the adjustable device can be removed from the steel bar, cement pouring is carried out, and the pier cylinder mold can guarantee the shape of the steel bar protection layer.

[0046] Therefore, the steel bar adjusting and controlling assembly has the beneficial effects of convenient fixing and convenient adjusting, does not need to use other auxiliary tools for fixing on the steel bar, and can be installed through the two steel bar positioning plates, so that the vertical stability of device installation is guaranteed, the operation is simple, and the operation cost is reduced.

[0047] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0048] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for controlling the thickness of a reinforcing cover of a bridge pier column, comprising a pier cylinder mold (4), and a plurality of reinforcing bars (101) for forming the reinforcing cover, which are arranged in parallel along the axis of the pier cylinder mold (4) and are radially movable; characterized in that, Also include: Reinforcement adjusting control assembly, the reinforcement adjusting control assembly includes: Support (1), the support (1) both ends are fixed with reinforcement positioning plate (11), the reinforcement positioning plate (11) with the outer side wall surface of reinforcement (101) abuts, the support (1) middle part is provided with adjustable assembly mounting hole along the radial direction of reinforcement (101) arrangement; Reinforcement radial position adjustable assembly (2), the reinforcement radial position adjustable assembly includes assembly pipe (21), rack (23), adjusting gear (22) and drive rod (24), the assembly pipe (21) one end penetrates adjustable assembly mounting hole and is fixed with it;The rack (23) one end penetrates into the assembly pipe (21) and is slidably connected with the inner wall surface thereof, the other end can extend to the outside of the assembly pipe (21) and abut with the inner side wall of pier cylinder mold (4);The inner wall of the assembly pipe (21) is fixed with a gear seat, the adjusting gear (22) is rotatably installed on the gear seat and is engaged with the rack (23), a through hole is formed on the pipe wall of the assembly pipe (21) corresponding to the coaxial adjusting gear (22), one end of the drive rod (24) can be detachably connected with the shaft hole of the adjusting gear (22) through the through hole to drive the rack (23) to extend or retract to position the thickness of the reinforcement protective layer; Clamping ring (3), the other end of the assembly pipe (21) is provided with a connecting block (5), one end of the clamping ring (3) is hingedly installed on the side wall of the connecting block (5), and the other end can be tightly clamped with the outer side wall of the reinforcement (101).

2. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 1, characterized in that, The reinforcement radial position adjustable assembly (2) further includes a locking plate (25) fixed on the side wall of the assembly pipe (21) away from the reinforcement (101) along the direction of movement of the rack (23), one side end face of the locking plate (25) can be parallel to the side wall surface of the rack (23), and a screw hole is formed on the locking plate (25), and the tail end of the screw can be fastened with the side wall surface of the rack (23) by screwing the screw in the screw hole.

3. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 1, characterized in that, The shaft hole of the adjusting gear (22) is a square hole, the cross section of the drive rod (24) is a square surface and is adapted to be inserted into the square hole, and the through hole is a circular hole and its area is not less than the area of the circumscribed circle of the square hole.

4. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 1, characterized in that, The rack (23) is vertically installed with a stop plate (26) at one end close to the connecting block (5), and one side wall surface of the stop plate (26) can abut against the outer edge end of the adjusting gear (22).

5. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 1, characterized in that, The extending end of the rack (23) is fixedly installed with an arc-shaped abutting plate (231), and the outer arc surface of the arc-shaped abutting plate (231) is adapted to the shape of the inner side wall surface of the pier cylinder mold (4) and abuts against it.

6. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 1, characterized in that, The top end surface of the rack (23) is further provided with a scale line.

7. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 1, characterized in that, The clamping ring (3) comprises an arc-shaped plate one (31) and an arc-shaped plate two (32), one end of the arc-shaped plate one (31) and the arc-shaped plate two (32) is provided with a hinge hole and arranged coaxially, a connecting groove (51) is formed on the side wall of one end of the connecting block (5) close to the clamping ring (3), a hinge column (52) is vertically installed in the connecting groove (51), the arc-shaped plate one (31) and the arc-shaped plate two (32) are rotatably installed on the hinge column (52) through the hinge hole; the other end of the arc-shaped plate one (31) and the arc-shaped plate two (32) is integrally provided with a convex plate (33) with a screw hole along the radial direction, the side walls of the two convex plates (33) are abuttingly arranged and the two screw holes are correspondingly communicated, and the two convex plates (33) are connected by a fastening bolt (34).

8. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 1, characterized in that, The reinforcing steel bar positioning plate (11) comprises a mounting seat (111) and an abutting plate (112), one side end face of the mounting seat (111) is fixedly connected with the support (1), the abutting plate (112) is an arc-shaped plate, the outer arc end of the abutting plate (112) is detachably installed on the other side end face of the mounting seat (111), and the inner arc end is abuttingly arranged with the outer side wall of the reinforcing steel bar (101).

9. The device for controlling the thickness of the reinforcement cover of a bridge pier column according to claim 8, characterized in that, The abutting plates (112) are different in arc, so as to correspond to reinforcing steel bars with different diameters.

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