Slurry leakage prevention device for bridge prefabricated box girder

Abstract

The utility model relates to a slurry leakage prevention device for a bridge prefabricated box girder. The device comprises a mold and two leakage prevention assemblies symmetrically arranged on the inner surface of the mold. A plurality of steel bars are uniformly arranged on the outer surface of the mold, a sealing gasket is arranged between the inner surface and the leakage-proof assembly, and sliding grooves are formed in the outer surfaces of the two sides; the leakage-proof assembly comprises a first supporting block, a second supporting block, a pair of clamping blocks and two fixing plates. A rotating rod is fixedly connected to the outer surface of the first supporting block and penetrates through the sliding groove, the end of the rotating rod is fixedly connected with a crank, and the other end of the rotating rod penetrates through the first supporting block and is fixedly connected with a two-way threaded rod; the two-way threaded rod penetrates through the first horizontal parts of the pair of clamping blocks, and the end of the two-way threaded rod is rotationally connected with the second supporting block. The first supporting block and the second supporting block are symmetrically provided with a set of limiting rods on the outer side of the last horizontal part of the pair of clamping blocks. The two fixing plates are connected with pressing plates, and the two pressing plates are arranged on the tops of the first supporting block and the second supporting block in a one-to-one correspondence mode. The device is convenient to use, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precast box girders, in particular to a leakage prevention device for bridge precast box girders. Background Technique

[0002] The precast box girder is a precast component mainly used in bridge engineering. It is produced in a precast factory or on-site. The concrete is poured into a box-shaped cross-section beam, and then it is transported to the bridge construction site for installation and connection.

[0003] For the existing leakage prevention tools for precast box girders, although they are flexible in use, reliable in performance, high in construction efficiency, can protect the steel bars from leakage and pollution, and ensure the quality of concrete, when operating multiple fixing bolts for fixing leakage prevention, it is necessary to perform screwing operations separately at each steel bar position. It is very inconvenient to screw multiple installation bolts inside the mold with a narrow space, which is time-consuming and laborious, affecting the work efficiency. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a leakage prevention device for bridge precast box girders that is convenient to use and improves work efficiency.

[0005] To solve the above problems, a leakage prevention device for bridge precast box girders according to the utility model is characterized in that: the device includes a mold and two leakage prevention components symmetrically arranged on the inner surface of the mold; a plurality of steel bars are evenly arranged on the outer surface of the mold, a sealing gasket is arranged between the inner surface and the leakage prevention components, and sliding grooves are opened on both outer surfaces; the leakage prevention components include a first support block, a second support block, a pair of clamping blocks and two fixing plates; a rotating rod is fixedly connected to the outer surface of the first support block, one end of the rotating rod passes through the sliding groove and the end is fixedly connected with a crank, and the other end passes through the first support block and the end is fixedly connected with a bidirectional threaded rod; the bidirectional threaded rod penetrates through the first horizontal parts of a pair of clamping blocks, and the end of the bidirectional threaded rod is rotatably connected with the second support block; a group of limiting rods are symmetrically arranged on the outer sides of the last horizontal parts of a pair of clamping blocks between the first support block and the second support block; two pressing plates are respectively rotatably connected to the two fixing plates through a bolt, and the two pressing plates are correspondingly arranged on the tops of the first support block and the second support block.

[0006] A plurality of through holes are equidistantly opened on the outer surface of each sealing gasket, and the steel bars are inserted into the through holes in one-to-one correspondence.

[0007] The outer surface of the rotating rod is slidably connected with the inner surface of the sliding groove.

[0008] The other end of the rotating rod slidably penetrates through the first support block.

[0009] The clamping block is in close contact with the inner surface of the mold through the gasket.

[0010] A pair of the clamping blocks are symmetrically arranged. Each clamping block includes several grooves with a semicircular cross-section connected together in sequence; adjacent two grooves are connected by a horizontal part with a rectangular cross-section; the steel bars are arranged in the grooves.

[0011] The first horizontal part is in threaded connection with the bidirectional threaded rod.

[0012] The utility model has the following advantages compared with the prior art:

[0013] 1. After the steel bars pass through the mold in the utility model, turning the bolt can press and fit the first support block and the second support block against the surface of the gasket, and turning the crank can drive the two clamping blocks to move relatively and simultaneously wrap and clamp a plurality of steel bars, which is not only convenient and fast to operate, but also improves the work efficiency.

[0014] 2. In the utility model, the first support block and the second support block drive the clamping blocks through the pressing plate, and press the clamping blocks on the surface of the gasket, so as to fill the gap between the steel bars and the mold, playing a good role in leakage prevention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes in detail the specific embodiments of the utility model with reference to the drawings.

[0016] Figure 1 is a perspective view of the utility model.

[0017] Figure 2 is a partially sectional perspective view of the utility model.

[0018] Figure 3 is an enlarged perspective view of the leakage prevention component in the utility model.

[0019] In the figure: 1 - mold; 2 - steel bar; 3 - chute; 4 - gasket; 5 - leakage prevention component; 501 - first support block; 502 - second support block; 503 - rotating rod; 504 - crank; 505 - bidirectional threaded rod; 506 - clamping block; 507 - limiting rod; 508 - fixing plate; 509 - bolt; 510 - pressing plate; 511 - first horizontal part; 512 - last horizontal part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] As Figures 1 to 3As shown in the figure, a leakage prevention device for precast box girders of bridges, the device includes a mold 1 and two leakage prevention components 5 symmetrically arranged on the inner surface of the mold 1. A plurality of steel bars 2 are evenly arranged on the outer surface of the mold 1, a sealing gasket 4 is arranged between the inner surface and the leakage prevention component 5, and sliding grooves 3 are opened on both outer surfaces; the leakage prevention component 5 includes a first support block 501, a second support block 502, a pair of clamping blocks 506 and two fixing plates 508; a rotating rod 503 is fixedly connected to the outer surface of the first support block 501, one end of the rotating rod 503 passes through the sliding groove 3 and the end is fixedly connected with a crank 504, and the other end passes through the first support block 501 and the end is fixedly connected with a bidirectional threaded rod 505; the bidirectional threaded rod 505 penetrates through the first horizontal part 511 of a pair of clamping blocks 506, and the end of the bidirectional threaded rod 505 is rotatably connected to the second support block 502; a group of limiting rods 507 are symmetrically arranged on the outer sides of the first support block 501 and the second support block 502 at the last horizontal part 512 of a pair of clamping blocks 506; two fixing plates 508 are respectively rotatably connected with pressing plates 510 through a bolt 509, and the two pressing plates 510 are arranged corresponding to the tops of the first support block 501 and the second support block 502 one by one.

[0021] Wherein: a plurality of through holes are equidistantly opened on the outer surface of each sealing gasket 4, and a steel bar 2 is inserted into each of the plurality of through holes correspondingly.

[0022] The outer surface of the rotating rod 503 is slidably connected with the inner surface of the sliding groove 3.

[0023] The other end of the rotating rod 503 slidably penetrates through the first support block 501.

[0024] The clamping block 506 is in close contact with the inner surface of the mold 1 through the sealing gasket 4, and can play a role in sealing and leakage prevention at the contact position between the steel bar 2 and the mold 1.

[0025] A pair of clamping blocks 506 are symmetrically arranged, and each clamping block 506 includes a plurality of grooves with a semicircular cross-section connected together in sequence; adjacent two grooves are connected by a horizontal part with a rectangular cross-section; a steel bar 2 is arranged in the groove.

[0026] The first horizontal part 511 is threadedly connected with the bidirectional threaded rod 505.

[0027] During use, after the steel bar 2 passes through the mold 1, the gasket 4 can be sleeved outside the steel bar 2 through the through-hole. Rotating the bolt 509 drives the pressing plate 510 to move. The movement of the pressing plate 510 can press the first support block 501 and the second support block 502 tightly against the surface of the gasket 4, thereby improving the sealing performance. Rotating the crank 504 drives the rotating rod 503 to rotate. The rotation of the rotating rod 503 can drive the double-threaded screw rod 505 to rotate accordingly. The rotation of the double-threaded screw rod 505 can drive the two clamping blocks 506 to move relatively. The clamping blocks 506 can clamp multiple steel bars 2 on one side. Cooperating with the pressing plate 510, the first support block 501 and the second support block 502 drive the clamping blocks 506 and press the clamping blocks 506 against the surface of the gasket 4. After the clamping blocks 506 clamp the outside of the steel bar 2, the gap between the steel bar 2 and the mold 1 can be filled, playing a good role in preventing leakage.

[0028] When rotating the crank 504 to drive the clamping block 506 to move, the setting of the limiting rod 507 can limit the moving distance of the clamping block 506 to ensure that the clamping block 506 clamps the steel bar 2 tightly.

[0029] When turning the bolt 509 to push the first support block 501 and the second support block 502 to move, the rotating rod 503 will move along with the inner wall of the chute 3, which will not affect the normal use of the crank 504.

[0030] When the utility model is in operation, only by rotating the crank 504, the leakage prevention of the steel bar 2 on one side can be completed.

Claims

1. A leakage prevention device for precast box girders of bridges, characterized in that: The device includes a mold (1) and two leak-proof components (5) symmetrically arranged on the inner surface of the mold (1); a plurality of steel bars (2) are evenly arranged on the outer surface of the mold (1), a sealing gasket (4) is arranged between the inner surface and the leak-proof components (5), and chutes (3) are formed on both outer surfaces; the leak-proof components (5) include a first support block (501), a second support block (502), a pair of clamping blocks (506) and two fixing plates (508); a rotating rod (503) is fixedly connected to the outer surface of the first support block (501), one end of the rotating rod (503) passes through the chute (3) and is fixedly connected with a crank (504) at the end, and the other end passes through the first support block (501) and is fixedly connected with a bidirectional threaded rod (505) at the end; the bidirectional threaded rod (505) penetrates through the first horizontal parts (511) of the pair of clamping blocks (506), and the end of the bidirectional threaded rod (505) is rotatably connected with the second support block (502); a group of limiting rods (507) are symmetrically arranged on the outer sides of the first support block (501) and the second support block (502) at the last horizontal parts (512) of the pair of clamping blocks (506); pressing plates (510) are rotatably connected to the two fixing plates (508) respectively through a bolt (509), and the two pressing plates (510) are arranged corresponding to the tops of the first support block (501) and the second support block (502).

2. The leak-proof slurry device for precast box girders of a bridge according to claim 1, characterized in that: A plurality of through holes are equidistantly formed on the outer surface of each sealing gasket (4), and the steel bars (2) are inserted into the plurality of through holes in a one-to-one correspondence.

3. The leak-proof slurry device for precast box girders of a bridge according to claim 1, characterized in that: The outer surface of the rotating rod (503) is slidably connected with the inner surface of the chute (3).

4. The leak-proof slurry device for precast box girders of a bridge according to claim 1, characterized in that: The other end of the rotating rod (503) slidably penetrates through the first support block (501).

5. The leak-proof slurry device for precast box girders of a bridge according to claim 1, characterized in that: The clamping blocks (506) are in close contact with the inner surface of the mold (1) through the sealing gasket (4).

6. The leak-proof slurry device for precast box girders of a bridge according to claim 1, characterized in that: The pair of clamping blocks (506) are symmetrically arranged, and each clamping block (506) includes several grooves with a semicircular cross-section connected together in sequence; adjacent two grooves are connected by a horizontal part with a rectangular cross-section; the steel bars (2) are arranged in the grooves.

7. The leak-proof slurry device for precast box girders of a bridge according to claim 6, characterized in that: The first horizontal part (511) is threadedly connected with the bidirectional threaded rod (505).

Images