Discharging block assembly of cast-in-place box girder construction device

Abstract

The utility model discloses an unloading block assembly of a cast-in-place box girder construction device, which comprises a plurality of unloading blocks and a pulling mechanism for driving the unloading blocks to lift and adjust, each unloading block comprises a lower base, an upper base, a sliding sleeve, a hollow support body, a fixed pulley block, a movable pulley block and a steel wire rope, the hollow supporting body is sleeved with a sliding sleeve which is in sliding fit with the hollow supporting body, an upper base is arranged at the upper end of the sliding sleeve, a fixed pulley block is arranged in the upper end of the hollow supporting body, a movable pulley block is arranged at the lower end of the sliding sleeve, a steel wire rope is wound around the fixed pulley block and the movable pulley block, and one end of the steel wire rope is fixedly connected with a wheel carrier of the fixed pulley block; compared with the prior art, the device has the advantages that the device is convenient to use, the working efficiency is improved, and labor is saved during adjustment.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge construction, and in particular to a drop block assembly for a cast-in-place box girder construction device. Background Technology

[0002] The main functions of prefabricated detachable blocks in bridge construction include elevation adjustment and scaffold dismantling. During construction, the formwork system is an essential load-bearing structure for pouring concrete. To ensure the quality and strength of the concrete, the elevation of the formwork needs to be adjusted. Prefabricated detachable blocks can facilitate elevation adjustment, improve construction efficiency, and ensure project quality. In addition, after the main concrete structure is poured, the scaffolding needs to be dismantled. Prefabricated detachable blocks have the advantages of convenient assembly and disassembly and low cost, which can effectively reduce dismantling costs and improve construction efficiency.

[0003] The patent application (application number) CN202321424337.6 discloses a rapidly descending temporary support unloading block, comprising an upper support, a lower support, a left support, and a right support. The lower support has a left support and a right support on both sides of its upper surface. The upper surfaces of the left and right supports overlap the upper support. A bidirectional screw is threaded through the interior of both the left and right supports. Through the arrangement of the upper support, lower support, left support, right support, and bidirectional screw, and by threading the bidirectional screw through the left and right supports, a rapid descent of the temporary support unloading block is achieved. Tightening the hexagonal bolt at one end of the double-ended screw allows the left and right supports to move synchronously, enabling the entire unloading block to rise and fall, thereby lowering the upper structure quickly and conveniently. This avoids uneven support force between the left and right supports on the upper support, ensuring the upper support is level and thus guaranteeing a safe and stable unloading process. Since each load-bearing beam in the entire formwork system requires multiple unloading blocks for support, adjusting the unloading blocks individually requires manual adjustment, which is inconvenient and reduces work efficiency. Summary of the Invention

[0004] The purpose of this utility model is to solve the problems in the prior art and to propose a drop block assembly for a cast-in-place box girder construction device, which is convenient to use, improves work efficiency, and saves effort in adjustment.

[0005] To achieve the above objectives, this utility model proposes a jacking block assembly for a cast-in-place box girder construction device, comprising several jacking blocks and a pulling mechanism for driving the lifting and adjusting of the jacking blocks. Each jacking block includes a lower base, an upper base, a sliding sleeve, a hollow support body, a fixed pulley block, a movable pulley block, and a steel wire rope. The lower base is provided with a hollow support body, and a sliding sleeve is fitted onto the hollow support body. The upper end of the sliding sleeve is provided with an upper base. The upper end of the hollow support body is provided with a fixed pulley block, and the lower end of the sliding sleeve is provided with a movable pulley block. A steel wire rope is wound around the fixed pulley block and the movable pulley block. One end of the steel wire rope is fixedly connected to the wheel frame of the fixed pulley block, and the other end is connected to the pulling mechanism.

[0006] Preferably, the hollow support has a rectangular cross-section, the pulley of the movable pulley group is located inside the hollow support, and the side wall of the hollow support corresponding to the pulley shaft of the movable pulley group is provided with a clearance opening.

[0007] Preferably, the upper rear side of the hollow support body is provided with a guide wheel seat, and the guide wheel seat is provided with a guide rail wheel with one end extending into the hollow support body. The guide rail wheel is used to guide the wire rope.

[0008] Preferably, the rear side of the sliding sleeve is provided with a long slot to avoid the guide wheel seat.

[0009] Preferably, the pulling mechanism includes a driving mechanism and a plurality of connecting mechanisms disposed on the driving mechanism. The connecting mechanism includes a connecting body, a screw body is disposed on the connecting body, the front end of the screw body is fixedly connected to the corresponding end of the corresponding wire rope, and an adjusting nut is disposed on the screw body at the rear end of the connecting body.

[0010] Preferably, the drive mechanism includes a fixed seat, a movable seat, a hydraulic cylinder, and two pull rods. The pull rods are slidably mounted on the fixed seat, and the movable seat is located at the rear end of the pull rods. A hydraulic cylinder is located between the fixed seat and the movable seat, and a connecting body is provided on the pull rods.

[0011] Preferably, the unloading block and the pulling mechanism are mounted on a mounting base, and the mounting base is provided with a bracket supported on the pull rod.

[0012] The beneficial effects of this utility model are as follows: This utility model uses a pulling mechanism to pull a steel wire rope and drives the sliding sleeve to move up and down through the cooperation of a fixed pulley group and a movable pulley group. The sliding sleeve drives the upper base to move, realizing the simultaneous adjustment of multiple unloading blocks. In addition, the cooperation of the fixed pulley group, the movable pulley group and the steel wire rope effectively reduces the pulling force of the pulling mechanism. Compared with the prior art, it is convenient to use, improves work efficiency and saves effort in adjustment.

[0013] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the unloading block assembly of a cast-in-place box girder construction device according to this utility model;

[0015] Figure 2 This is a schematic diagram of the pulling mechanism;

[0016] Figure 3 This is a structural diagram of the unloading block.

[0017] In the diagram: 1-Unloading block, 2-Pulling mechanism, 3-Mounting base, 4-Bracket, 11-Lower base, 12-Upper base, 13-Sliding sleeve, 14-Hollow support body, 15-Fixed pulley block, 16-Moving pulley block, 17-Wire rope, 18-Allowing opening, 19-Guide wheel seat, 110-Guide wheel, 111-Long slot, 21-Drive mechanism, 22-Connecting mechanism, 211-Fixed seat, 212-Moving seat, 213-Hydraulic cylinder, 214-Pull rod, 221-Connecting body, 222-Screw body, 223-Adjusting nut. Detailed Implementation

[0018] See Figure 1 , Figure 2 and Figure 3 This utility model discloses a casting-in-place box girder construction device with a jacking block assembly, comprising a plurality of jacking blocks 1 and a pulling mechanism 2 for adjusting the lifting and lowering of the jacking blocks 1. Each jacking block includes a lower base 11, an upper base 12, a sliding sleeve 13, a hollow support body 14, a fixed pulley group 15, a movable pulley group 16, and a steel wire rope 17. The lower base 11 is provided with a hollow support body 14, and a sliding sleeve 13 is fitted onto the hollow support body 14. The upper base 12 is provided at the upper end of the sliding sleeve 13. The fixed pulley group 15 is provided inside the upper end of the hollow support body 14, and the movable pulley group 16 is provided at the lower end of the sliding sleeve 13. A steel wire rope 17 is wound around the fixed pulley group 15 and the movable pulley group 16. One end of the steel wire rope 17 is fixedly connected to the wheel frame of the fixed pulley group 15, and the other end is connected to the pulling mechanism 2.

[0019] The hollow support 14 has a rectangular cross-section. The pulleys of the movable pulley group 16 are located inside the hollow support 14. The hollow support 14 has a clearance opening 18 on the side wall corresponding to the pulley shaft of the movable pulley group 16.

[0020] The hollow support body 14 is provided with a guide wheel seat 19 on its upper rear side. The guide wheel seat 19 is provided with a guide rail wheel 110 with one end extending into the hollow support body 14. The guide rail wheel 110 is used to guide the wire rope 17.

[0021] The rear side of the sliding sleeve 13 is provided with a long slot 111 to avoid the guide wheel seat 19.

[0022] The pulling mechanism 2 includes a driving mechanism 21 and a plurality of connecting mechanisms 22 provided on the driving mechanism 21. The connecting mechanism 22 includes a connecting body 221, and a screw body 222 is provided on the connecting body 221. The front end of the screw body 222 is fixedly connected to the corresponding end of the corresponding wire rope 17. An adjusting nut 223 is provided on the screw body 222 at the rear end of the connecting body 221.

[0023] The drive mechanism 21 includes a fixed base 211, a movable base 212, a hydraulic cylinder 213, and two pull rods 214. The pull rods 214 are slidably passed through the fixed base 211. The movable base 212 is provided at the rear end of the pull rods 214. The hydraulic cylinder 213 is provided between the fixed base 211 and the movable base 212. A connecting body 221 is provided on the pull rods 214.

[0024] The unloading block 1 and the pulling mechanism 2 are mounted on the mounting base 3, and the mounting base 3 is provided with a bracket 4 supported on the pull rod 214.

[0025] The working process of this utility model:

[0026] In the operation of the unloading block assembly of the cast-in-place box girder construction device of this utility model, the hydraulic cylinder 213 is activated to drive the moving seat 212 to move backward. The moving seat 212 drives the connecting body 221 to move backward through the pull rod 214. The connecting body 221 pulls the wire rope 17 through the cooperation of the adjusting nut 223 and the screw body 222. The wire rope 17 drives the movable pulley block 16 to move upward. The movable pulley block 16 drives the upper base 12 to move upward through the sliding sleeve 13 for position adjustment. When the upper base 12 needs to be lowered for adjustment, the hydraulic cylinder 213 is activated to drive the moving seat 212 to move forward.

[0027] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A dropping block assembly for a cast-in-place box girder construction device, characterized in that: The device includes several unloading blocks (1) and a pulling mechanism (2) for adjusting the lifting of the unloading blocks (1). The unloading blocks include a lower base (11), an upper base (12), a sliding sleeve (13), a hollow support body (14), a fixed pulley group (15), a movable pulley group (16), and a steel wire rope (17). The lower base (11) is provided with a hollow support body (14). The hollow support body (14) is fitted with a sliding sleeve (13). The upper end of the sliding sleeve (13) is provided with an upper base (12). The upper end of the hollow support body (14) is provided with a fixed pulley group (15). The lower end of the sliding sleeve (13) is provided with a movable pulley group (16). The fixed pulley group (15) and the movable pulley group (16) are wound with a steel wire rope (17). One end of the steel wire rope (17) is fixedly connected to the wheel frame of the fixed pulley group (15), and the other end is connected to the pulling mechanism (2).

2. The unloading block assembly of a cast-in-place box girder construction device as described in claim 1, characterized in that: The hollow support (14) has a rectangular cross-section. The pulleys of the movable pulley group (16) are located inside the hollow support (14). The hollow support (14) has a clearance opening (18) on the side wall corresponding to the pulley shaft of the movable pulley group (16).

3. The unloading block assembly of a cast-in-place box girder construction device as described in claim 2, characterized in that: The hollow support (14) has a guide wheel seat (19) on its upper rear side. The guide wheel seat (19) has a guide rail wheel (110) with one end extending into the hollow support (14). The guide rail wheel (110) is used to guide the wire rope (17).

4. The unloading block assembly of a cast-in-place box girder construction device as described in claim 3, characterized in that: The rear side of the sliding sleeve (13) is provided with a long slot (111) to avoid the guide wheel seat (19).

5. The unloading block assembly of a cast-in-place box girder construction device as described in claim 1, characterized in that: The pulling mechanism (2) includes a driving mechanism (21) and a plurality of connecting mechanisms (22) provided on the driving mechanism (21). The connecting mechanism (22) includes a connecting body (221). A screw body (222) is provided on the connecting body (221). The front end of the screw body (222) is fixedly connected to the corresponding end of the corresponding wire rope (17). An adjusting nut (223) located at the rear end of the connecting body (221) is provided on the screw body (222).

6. The unloading block assembly of a cast-in-place box girder construction device as described in claim 5, characterized in that: The drive mechanism (21) includes a fixed seat (211), a movable seat (212), a hydraulic cylinder (213), and two pull rods (214). The pull rods (214) are slidably mounted on the fixed seat (211). The movable seat (212) is located at the rear end of the pull rods (214). The hydraulic cylinder (213) is located between the fixed seat (211) and the movable seat (212). The pull rods (214) are provided with a connecting body (221).

7. The unloading block assembly of a cast-in-place box girder construction device as described in claim 6, characterized in that: The unloading block (1) and the pulling mechanism (2) are mounted on the mounting base (3), and the mounting base (3) is provided with a bracket (4) supported on the pull rod (214).

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