An adjustable device for the steel bars of a prefabricated bridge cap and its usage method

Abstract

The present invention discloses an assembled bridge cap steel bar adjusting device and its using method. Each adjusting component includes a first mounting plate and a second mounting plate which are oppositely arranged within a positioning frame. The first mounting plate is connected to the corresponding positioning plate, and the first mounting plate and the second mounting plate are detachably connected. A first adjusting block and a second adjusting block are oppositely arranged between the first mounting plate and the second mounting plate. A first lead screw is rotatably connected to the side of the first adjusting block facing away from the second adjusting block. The first lead screw penetrates through the first mounting plate and is threadedly connected to the first mounting plate. A second lead screw is rotatably connected to the side of the second adjusting block facing away from the first adjusting block. The second lead screw penetrates through the second mounting plate and is threadedly connected to the second mounting plate. The side of the first adjusting block close to the second adjusting block and the side of the second adjusting block close to the first adjusting block are both concave arc surfaces. The present invention can more precisely adjust the verticality of the cap steel bars, which helps to improve the connection quality and efficiency between the pier column and the cap.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated bridge construction, and particularly relates to a device for adjusting the steel bars of a prefabricated bridge bearing platform and a method for using the same. Background Art

[0002] Prefabricated bridges are widely praised for their many advantages such as low carbon environmental protection and high construction efficiency, and are being used more and more widely. A prefabricated bridge is to assemble and connect structures such as piers and beams manufactured in factories through grouting sleeves and other methods, so that the on-site foundation and prefabricated components are constructed synchronously, thereby achieving the goal of shortening the construction period. The connection between the steel bars of the bearing platform and the grouting sleeves of the piers often determines the construction quality and progress of the prefabricated bridge. During the construction process of the bearing platform, the steel bars of the bearing platform will inevitably be deformed, resulting in difficulty in accurately inserting the steel bars of the bearing platform into the grouting sleeves, which will have an adverse impact on the construction progress of the project.

[0003] In response to the above problems, the current traditional method is to manually straighten the steel bars of the bearing platform by using a wrench, which is difficult and inaccurate to operate, seriously affecting the connection quality and efficiency between the pier and the bearing platform. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a device for adjusting the steel bars of a prefabricated bridge bearing platform and a method for using the same, which can more accurately adjust the verticality of the steel bars of the bearing platform, is easy to operate, and helps to improve the connection quality and efficiency between the pier and the bearing platform.

[0005] In order to solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] A device for adjusting the steel bars of a prefabricated bridge bearing platform includes a positioning frame formed by detachably connecting four positioning plates end to end in sequence and a plurality of adjusting components arranged at intervals on each positioning plate. Each adjusting component includes a first mounting plate and a second mounting plate that are oppositely arranged inside the positioning frame. The first mounting plate is connected to the corresponding positioning plate, the first mounting plate and the second mounting plate are detachably connected, a first adjusting block and a second adjusting block are oppositely arranged between the first mounting plate and the second mounting plate. A first lead screw is rotatably connected to the side of the first adjusting block facing away from the second adjusting block. The first lead screw penetrates through the first mounting plate and is threadedly connected to the first mounting plate. A second lead screw is rotatably connected to the side of the second adjusting block facing away from the first adjusting block. The second lead screw penetrates through the second mounting plate and is threadedly connected to the second mounting plate. The side of the first adjusting block close to the second adjusting block and the side of the second adjusting block close to the first adjusting block are both concave arc surfaces.

[0007] Further, two clamping plates which are arranged vertically and oppositely are connected to the side of the first mounting plate facing away from the first adjusting block. An interval for cooperating with the positioning plate is arranged between the two clamping plates. Long strip holes are oppositely formed in the two clamping plates. The positioning plate is located in the interval between the two clamping plates. Two first bolt-nut assemblies distributed on both sides of the positioning plate penetrate through the long strip holes in the two clamping plates.

[0008] Further, the first mounting plate and the second mounting plate are connected by a second bolt-nut assembly.

[0009] Further, a rolling bearing is fixed to the side of the first adjusting block facing away from the second adjusting block, and the first lead screw is fixedly connected to the inner ring of the rolling bearing; a rolling bearing is fixed to the side of the second adjusting block facing away from the first adjusting block, and the second lead screw is fixedly connected to the inner ring of the rolling bearing.

[0010] Further, the first lead screw and the first adjusting block are connected by a ball head connection structure, and the second lead screw and the second adjusting block are connected by a ball head connection structure.

[0011] Further, anti-slip pads are arranged on the concave arc surfaces of the first adjusting block and the second adjusting block.

[0012] Further, a screwing block is fixed to one end of the first lead screw facing away from the first adjusting block and one end of the second lead screw facing away from the second adjusting block.

[0013] Further, a bayonet is arranged at one end of each positioning plate, and a clamping block is arranged at the other end of each positioning plate. After the bayonets and the clamping blocks of adjacent two positioning plates are matched, they are connected by a third bolt-nut assembly.

[0014] A using method of an assembled bridge cap steel bar adjusting device includes: connecting the heads and tails of four positioning plates in sequence around the bridge cap. Each first mounting plate of each adjusting assembly on each positioning plate corresponds to a bridge cap steel bar. Connect the second mounting plate of each adjusting assembly to the corresponding first mounting plate. Screw the first lead screw connected to the first mounting plate and the second lead screw connected to the second mounting plate, so that the first adjusting block connected to the first lead screw and the second adjusting block connected to the second lead screw tightly press the corresponding bridge cap steel bars. Adjust the bridge cap steel bars by screwing the first lead screw and / or the second lead screw. Until the bridge cap steel bars can be inserted into the grouting sleeve on the pier column, lower the pier column so that the bridge cap steel bars are inserted into the corresponding grouting sleeves, and disassemble the bridge cap steel bar adjusting device after insertion.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] An adjustable device for the steel bars of an assembled bridge cap provided by the present invention, when in use, the heads and tails of four positioning plates are sequentially connected around the bridge cap. Each first mounting plate of each adjusting component on each positioning plate corresponds to a steel bar of the bridge cap. Connect the second mounting plate of each adjusting component to the corresponding first mounting plate. Rotate the first lead screw connected to the first mounting plate and the second lead screw connected to the second mounting plate, so that the first adjusting block connected to the first lead screw and the second adjusting block connected to the second lead screw press against the corresponding steel bar of the bridge cap. Adjust the steel bar of the bridge cap by rotating the first lead screw and / or the second lead screw. Until the steel bar of the bridge cap can be inserted into the grouting sleeve on the pier column, lower the pier column so that the steel bar of the bridge cap is inserted into the corresponding grouting sleeve, and disassemble the adjustable device for the steel bars of the bridge cap after insertion. It can be seen that when using the adjustable device for the steel bars of the bridge cap provided by the present invention to adjust the steel bars of the bridge cap, after installing the adjustable device, only by rotating the first lead screw and / or the second lead screw can the adjustment of the steel bars of the bridge cap be realized. The operation is simple, and it is convenient to better control the adjustment accuracy during adjustment, which speeds up the connection efficiency between the pier column and the bridge cap. The present invention is applicable to pier columns of different sizes and steel bars of bridge caps with different diameters, has wide applicability, and its structure is detachably connected and can be recycled.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and cooperates with the attached drawings to make detailed descriptions as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the specific embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of an adjustable device for the steel bars of an assembled bridge cap of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of an adjusting component in an adjustable device for the steel bars of an assembled bridge cap of the present invention;

[0021] Figure 3 It is a partial schematic diagram of the structure of an adjusting component in an adjustable device for the steel bars of an assembled bridge cap of the present invention;

[0022] Figure 4 It is a partial schematic diagram of the structure of a positioning frame in an adjustable device for the steel bars of an assembled bridge cap of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure in the use state of an adjustable device for the steel bars of an assembled bridge cap of the present invention;

[0024] Figure 6 It is a schematic diagram after the steel bars of the prefabricated bridge bearing platform are matched with the grouting sleeves.

[0025] In the figure: 1-positioning frame; 101-positioning plate; 102-third bolt and nut assembly; 2-adjusting assembly; 201-first mounting plate; 202-second mounting plate; 203-first adjusting block; 204-second adjusting block; 205-first lead screw; 206-second lead screw; 207-clamping plate; 208-long slot; 209-first bolt and nut assembly; 210-second bolt and nut assembly; 211-anti-slip pad; 212-turning block; 3-steel bars of the bearing platform; 4-bearing platform; 5-grouting sleeve. Specific implementation manner

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] As a specific implementation manner of the present invention, in combination with Figures 1 to 4 As shown, a steel bar adjusting device for a prefabricated bridge bearing platform includes a positioning frame 1 composed of four positioning plates 101 detachably connected end to end in sequence and a number of adjusting assemblies 2 arranged at intervals on each positioning plate 101. The interval between two adjacent adjusting assemblies 2 on each positioning plate 101 is equal to the interval between two adjacent steel bars 3 of the bearing platform, and each adjusting assembly 2 corresponds to a steel bar 3 of the bearing platform.

[0028] Specifically, as shown in Figure 4 As shown, a bayonet is provided at one end of each positioning plate 101, and a block is provided at the other end of each positioning plate 101. The block on any one positioning plate 101 can cooperate with the bayonet on any one positioning plate 101. After the bayonets and blocks of two adjacent positioning plates 101 are matched and connected by a third bolt and nut assembly 102, the positioning frame 1 is formed.

[0029] Specifically, as shown in Figure 1 、 Figure 2 and Figure 3As shown in the figure, each adjusting component 2 includes a first mounting plate 201 and a second mounting plate 202 which are located inside the positioning frame 1 and are arranged opposite to each other. The first mounting plate 201 is connected to the corresponding positioning plate 101, and the first mounting plate 201 and the second mounting plate 202 are detachably connected. A first adjusting block 203 and a second adjusting block 204 are arranged opposite to each other between the first mounting plate 201 and the second mounting plate 202. A first lead screw 205 is rotatably connected to a side of the first adjusting block 203 facing away from the second adjusting block 204. The first lead screw 205 passes through the first mounting plate 201 and is threadedly connected to the first mounting plate 201. That is to say, the first lead screw 205 can rotate relative to the first mounting plate 201, and when rotating, the first lead screw 205 can push the first adjusting block 203 to move towards or away from the second adjusting block 204. Similarly, a second lead screw 206 is rotatably connected to a side of the second adjusting block 204 facing away from the first adjusting block 203. The second lead screw 206 passes through the second mounting plate 202 and is threadedly connected to the second mounting plate 202. That is to say, the second lead screw 206 can rotate relative to the second mounting plate 202, and when rotating, the second lead screw 206 can push the second adjusting block 204 to move towards or away from the first adjusting block 203. Combining Figure 2 and Figure 3 As shown in the figure, one side of the first adjusting block 203 close to the second adjusting block 204 and one side of the second adjusting block 204 close to the first adjusting block 203 are both concave arc surfaces. The concave arc surface on the first adjusting block 203 and the concave arc surface on the second adjusting block 204 cooperate with each other to clamp the pile cap steel bars 3. In this embodiment, the first mounting plate 201 and the second mounting plate 202 are made of high-strength steel plates, and the thickness of the first mounting plate 201 and the second mounting plate 202 is not less than 10 cm.

[0030] Combining Figure 5 As shown in the figure, during use, the heads and tails of the four positioning plates 101 are sequentially connected around the pile cap 4. After connection, each first mounting plate 201 of each adjusting component 2 on each positioning plate 101 corresponds to a pile cap steel bar 3. Connect the second mounting plate 202 of each adjusting component 2 to the corresponding first mounting plate 201. Rotate the first lead screw 205 connected to the first mounting plate 201 and the second lead screw 206 connected to the second mounting plate 202, so that the first adjusting block 203 connected to the first lead screw 205 and the second adjusting block 204 connected to the second lead screw 206 clamp the corresponding pile cap steel bars 3. After clamping, adjust the pile cap steel bars 3 by rotating the first lead screw 205 and / or the second lead screw 206 until the pile cap steel bars 3 can be inserted into the grouting sleeve 5 on the pier column. Then lower the pier column so that the pile cap steel bars 3 are inserted into the corresponding grouting sleeves 5. After each pile cap steel bar 3 is inserted into the corresponding grouting sleeve 5, disassemble the second mounting plate 202 of each adjusting component 2 from the corresponding first mounting plate 201. After disassembly, disassemble the four positioning plates 101 constituting the positioning frame 1.

[0031] On the basis of the above embodiments, as a more preferred embodiment, in combination with Figure 1 and Figure 2 As shown, on the side of the first mounting plate 201 of each adjusting assembly 2 facing away from the first adjusting block 203, two clamping plates 207 are connected in a vertically opposite manner. An interval for cooperating with the positioning plate 101 is provided between the two clamping plates 207. Long strip holes 208 are formed in the two clamping plates 207 opposite to each other. The positioning plate 101 is located within the interval between the two clamping plates 207. Two first bolt and nut assemblies 209 distributed on both sides of the positioning plate 101 penetrate through the long strip holes 208 in the two clamping plates 207. That is to say, the adjusting assembly 2 and the positioning plate 101 are detachably connected. According to the interval between the pile cap steels 3, the position of the adjusting assembly 2 on the positioning plate 101 can be adaptively moved. After the movement is completed, the first bolt and nut assemblies 209 on both sides of the positioning plate 101 are used for fastening, so that the application range of the adjusting device is wider.

[0032] On the basis of the above embodiments, as a more preferred embodiment, as Figure 2 shown, the first mounting plate 201 and the second mounting plate 202 are connected by a second bolt and nut assembly 210. More preferably, both the first mounting plate 201 and the second mounting plate 202 are semi-circular plates. Ear plates are provided on both sides of each semi-circular plate. The second bolt and nut assembly 210 passes through the ear plates to connect the first mounting plate 201 and the second mounting plate 202.

[0033] In this embodiment, for example, a rolling bearing is fixed on the side of the first adjusting block 203 facing away from the second adjusting block 204. The first lead screw 205 is fixedly connected to the inner ring of the rolling bearing, thereby realizing the rotational connection between the first lead screw 205 and the first adjusting block 203. Similarly, a rolling bearing is fixed on the side of the second adjusting block 204 facing away from the first adjusting block 203. The second lead screw 206 is fixedly connected to the inner ring of the rolling bearing, thereby realizing the rotational connection between the second lead screw 206 and the second adjusting block 204.

[0034] Also for example, the first lead screw 205 and the first adjusting block 203 are connected by a ball head connection structure, thereby realizing the rotational connection between the first lead screw 205 and the first adjusting block 203. Similarly, the second lead screw 206 and the second adjusting block 204 are connected by a ball head connection structure, thereby realizing the rotational connection between the second lead screw 206 and the second adjusting block 204.

[0035] On the basis of the above embodiments, as a more preferred embodiment, as Figure 3As shown, anti-skid pads 211 are provided on the concave surfaces of the first adjustment block 203 and the second adjustment block 204. The anti-skid pads 211 can increase the friction between the first adjustment block 203 and the second adjustment block 204 and the cap steel bar 3 to prevent side slipping, making the adjustment process more reliable. In this embodiment, the anti-skid pads 211 can be rubber pads.

[0036] On the basis of the above-mentioned embodiment, as a more preferred embodiment, Figure 2 and Figure 3 As shown, a screw block 212 is fixed to one end of the first screw rod 205 away from the first adjustment block 203, and the screw block 212 facilitates the rotation of the first screw rod 205. Similarly, a screw block 212 is fixed to one end of the second screw rod 206 away from the second adjustment block 204, and the screw block 212 facilitates the rotation of the second screw rod 206. In this embodiment, the screw block 212 can be a hexagonal nut that cooperates with a hexagonal wrench.

[0037] The following is an implementation example, in which the cap steel bar adjustment device of the present invention is used to accurately insert the steel bar of the assembled bridge cap into the grouting sleeve on the pier column, as follows:

[0038] Step 1: Make an adjustment component 2 that meets the construction requirements.

[0039] Step 2: Make a positioning frame 1 that meets the construction requirements for installing and disassembling the adjustment component 2.

[0040] Step 3: Install the positioning frame 1 at the specified position of the base 4, and use the first bolt and nut assembly 209 to fix the clamping plate 207 in the adjustment assembly 2 on the positioning frame 1, so that the first adjustment block 203 on the first mounting plate 201 is opposite to the base reinforcement 3.

[0041] Step 4: Use the second bolt and nut assembly 210 to connect the first mounting plate 201 and the second mounting plate 202 in the adjustment assembly 2, and screw the first screw rod 205 and the second screw rod 206, so that the first adjustment block 203 connected to the first screw rod 205 and the second adjustment block 204 connected to the second screw rod 206 are pressed against the corresponding base steel bars 3. After tightening, adjust the base steel bars 3 by screwing and adjusting the first screw rod 205 and / or the second screw rod 206 until the base steel bars 3 can be inserted into the grouting sleeve 5 on the pier column and then stop adjusting.

[0042] Step 5: Lower the pier column so that the cap steel bar 3 is inserted into the corresponding grouting sleeve 5. Figure 5 shown.

[0043] Step 6: After lowering a certain distance, remove the adjustment device, and completely lower the pier column. The cap steel bar 3 is completely inserted into the corresponding grouting sleeve 5. Figure 6 shown.

[0044] Finally, it should be noted that the above-described embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field of the present invention can still modify the technical solutions described in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An assembled bridge bearing platform steel bar adjusting device, characterized in that It includes a positioning frame (1) formed by sequentially and detachably connecting four positioning plates (101) end to end, and a number of adjusting components (2) arranged at intervals on each of the positioning plates (101). Each adjusting component (2) includes a first mounting plate (201) and a second mounting plate (202) which are oppositely arranged inside the positioning frame (1). The first mounting plate (201) is connected to the corresponding positioning plate (101). The first mounting plate (201) and the second mounting plate (202) are detachably connected. A first adjusting block (203) and a second adjusting block (204) are oppositely arranged between the first mounting plate (201) and the second mounting plate (202). A first screw rod (205) is rotatably connected to the side of the first adjusting block (203) facing away from the second adjusting block (204). The first screw rod (205) penetrates through the first mounting plate (201) and is threadedly connected to the first mounting plate (201). A second screw rod (206) is rotatably connected to the side of the second adjusting block (204) facing away from the first adjusting block (203). The second screw rod (206) penetrates through the second mounting plate (202) and is threadedly connected to the second mounting plate (202). The sides of the first adjusting block (203) close to the second adjusting block (204) and the sides of the second adjusting block (204) close to the first adjusting block (203) are both concave arc surfaces; Two clamping plates (207) which are arranged vertically and oppositely are connected to the side of the first mounting plate (201) facing away from the first adjusting block (203). A gap for cooperating with the positioning plate (101) is arranged between the two clamping plates (207). Long holes (208) are oppositely formed in the two clamping plates (207). The positioning plate (101) is located in the gap between the two clamping plates (207). Two first bolt-nut assemblies (209) which are distributed on both sides of the positioning plate (101) penetrate through the long holes (208) in the two clamping plates (207); The first mounting plate (201) and the second mounting plate (202) are connected by a second bolt-nut assembly (210); A rolling bearing is fixed to the side of the first adjusting block (203) facing away from the second adjusting block (204). The first screw rod (205) is fixedly connected to the inner ring of the rolling bearing; a rolling bearing is fixed to the side of the second adjusting block (204) facing away from the first adjusting block (203). The second screw rod (206) is fixedly connected to the inner ring of the rolling bearing; The first screw rod (205) is connected to the first adjusting block (203) through a ball head connection structure. The second screw rod (206) is connected to the second adjusting block (204) through a ball head connection structure; Anti-slip pads (211) are arranged on the concave arc surfaces of the first adjusting block (203) and the second adjusting block (204); One end of the first lead screw (205) facing away from the first adjusting block (203) and one end of the second lead screw (206) facing away from the second adjusting block (204) are both fixed with screwing blocks (212). One end of each positioning plate (101) is provided with a bayonet, and the other end of each positioning plate (101) is provided with a clamping block. After the bayonets and clamping blocks of two adjacent positioning plates (101) are matched, they are connected through a third bolt-nut assembly (102).

2. The usage method of an assembled bridge cap steel bar adjusting device according to claim 1, characterized in that, Including: The head and tail of four positioning plates (101) are sequentially connected around the bearing platform (4). Each first mounting plate (201) of each adjusting assembly (2) on each positioning plate (101) corresponds to a bearing platform steel bar (3). Connect the second mounting plate (202) of each adjusting assembly (2) to the corresponding first mounting plate (201). Screw the first lead screw (205) connected to the first mounting plate (201) and the second lead screw (206) connected to the second mounting plate (202), so that the first adjusting block (203) connected to the first lead screw (205) and the second adjusting block (204) connected to the second lead screw (206) press against the corresponding bearing platform steel bar (3). Adjust the bearing platform steel bar (3) by screwing and adjusting the first lead screw (205) and / or the second lead screw (206) until the bearing platform steel bar (3) can be inserted into the grouting sleeve (5) on the pier column. Then lower the pier column so that the bearing platform steel bar (3) is inserted into the corresponding grouting sleeve (5). After insertion, disassemble the bearing platform steel bar adjusting device.

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