Die for prefabricating box girder

Abstract

The utility model provides a mould for prefabricating a box girder, which comprises a bottom mould, a plurality of spliced side moulds and an end mould arranged at the end part, and a forming cavity is built by a fence; supporting frames are arranged on the two sides of the bottom die, a plurality of first threaded holes are formed in the positions, corresponding to the supporting screws of the side dies, of the supporting frames, and the supporting frames moving in place are connected through the supporting screws inserted into the first threaded holes. A plurality of rolling supporting seats capable of moving in a lifting mode are installed on the supporting frame, the length of the rolling supporting seats is matched with the length of the side die, and the rolling supporting seats protruding upwards provide rolling supporting for the side die and are used for adjusting and aligning the side die. The structure is novel, sliding support can be provided for the side die, the hoisting and suspending time is shortened, and risks are reduced; rapid alignment is achieved in a pushing mode, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of molds, and more specifically to a mold for prefabricated box beams. Background Art

[0002] Box girder is a kind of beam in bridge engineering. It uses forming molds and pours concrete to form a box girder of reinforced concrete structure. Since the prefabricated box girder is very large, the corresponding forming mold is large in size and heavy in weight. At present, in the assembly and use of the forming mold, its side mold is mostly installed by hoisting. Specifically, it is first hoisted to the top of the corresponding position, and the staff drags the suspended side mold to adjust the position. It takes a certain amount of time to adjust and accurately align the side mold with the bottom mold and the bottom support frame, and then fix it through the connector.

[0003] In this process, the main problem is that it takes a long time to adjust the suspended side mold, which is inefficient and there is a safety hazard of the mold falling, which needs to be improved. Utility Model Content

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a mold for prefabricated box girders, which has a novel structure and can provide sliding support for the side molds, thereby reducing the length of time they are suspended in the air and reducing risks; it can achieve rapid alignment by pushing and improve assembly efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a mold for prefabricated box beams, comprising a bottom mold, a plurality of spliced ​​side molds, and an end mold installed at the end position, and a surrounding block is built to form a forming cavity; support frames are provided on both sides of the bottom mold, and a plurality of first threaded holes are provided on the support frames corresponding to the support screws of the side molds, and the support frames moved into place are connected by the support screws inserted at the first threaded holes; a plurality of lifting and lowering rolling support seats are installed on the support frames, the length of the rolling support seats is adapted to the length of the side molds, and the rolling support seats protruding upward provide rolling support for the side molds, which are used for adjusting and aligning the side molds.

[0007] In a better technical solution of the utility model, a groove extending along the length direction is provided in the middle of the support frame; a rolling support seat is arranged in the groove, and the rolling support seat is adjusted by the pushing structure to move vertically along the groove, so that the rolling support part of the rolling support seat is higher than the top surface of the support frame, which is used to perform rolling support on the bottom surface of the side mold.

[0008] In a preferred technical solution of the utility model, the rolling support seat includes a support block, and a plurality of universal ball bearings are installed on the top of the support block; the width of the support block is adapted to the groove width of the groove, and the two sides of the support block slide along the groove wall of the groove; a first sliding inclined surface is provided at the bottom of the support block; the pushing structure includes a jack, and a push block installed at the end of the piston rod of the jack; a second sliding inclined surface is correspondingly provided on the top of the push block, and the second sliding inclined surface and the first sliding inclined surface are slidably matched with each other; the jack drives the push block to move, thereby realizing the lifting and lowering of the support block and changing the position of the universal ball bearing.

[0009] In a preferred technical solution of the utility model, the higher end of the first sliding slope is located on the side away from the bottom mold; a plurality of guide holes are provided at the groove wall away from the bottom mold; a guide block is fixedly provided on the wall surface of the push block away from the second sliding slope, and the push block slides along the guide hole through the guide block; the jack is installed on the side wall of the support frame away from the bottom mold, the piston rod of the jack is arranged corresponding to the guide hole, and a push plate is fixedly provided at the end of the piston rod of the jack, and the push plate is fixedly connected to the end of the guide block by bolts.

[0010] In a preferred technical solution of the utility model, oppositely arranged slots are provided between the two slot walls at both ends of the groove; the minimum spacing between two slots on the same side is an integer multiple of the length of the side mold; a baffle is provided between the opposite slots, and the top of the baffle is higher than the top surface of the support frame.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a mold for prefabricated box beams, comprising a bottom mold, a plurality of spliced ​​side molds, and an end mold installed at an end position; support frames are provided on both sides of the bottom mold, and the support screws on the support frames corresponding to the side molds are provided with a plurality of first threaded holes, and the support frames moved into position are connected by the support screws inserted at the first threaded holes; a plurality of lifting and lowering rolling support seats are installed on the support frames, and the rolling support seats protruding upward provide rolling support for the side molds; when installing the side molds, the side molds can be hoisted and placed on the rolling support seats, and then adjusted for alignment and installation, thereby reducing the hanging time of the side molds and reducing risks; rapid alignment is achieved by pushing, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a mold for prefabricating a box beam provided in a specific embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of a three-dimensional unfolded structure of a mold for prefabricating a box beam provided in a specific embodiment of the utility model;

[0015] Figure 3It is a schematic diagram of the matching structure of the support frame, the rolling support seat, and the push structure provided in a specific embodiment of the utility model;

[0016] Figure 4 It is a schematic diagram of the unfolded structure of the support frame, the rolling support seat, and the push structure provided in the specific embodiment of the utility model;

[0017] Figure 5 It is a three-dimensional structural schematic diagram of a support frame provided in a specific embodiment of the utility model;

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of the rolling support seat provided in a specific embodiment of the utility model;

[0019] Figure 7 It is a three-dimensional structural schematic diagram of a push block provided in a specific embodiment of the utility model.

[0020] In the figure:

[0021] 100, bottom mold; 200, side mold; 300, end mold;

[0022] 400, support frame; 410, first threaded hole; 420, groove; 430, guide hole; 440, slot; 500, rolling support seat; 510, support block; 511, first sliding inclined surface; 520, universal ball bearing; 600, push structure; 610, jack; 620, push block; 621, second sliding inclined surface; 622, guide block; 700, baffle. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0024] like Figures 1 to 4 As shown, a specific embodiment of the utility model discloses a mold for prefabricated box beams, including a bottom mold 100, a plurality of spliced ​​side molds 200, and an end mold 300 installed at the end position, and a fence is built to form a forming cavity; support frames 400 are provided on both sides of the bottom mold 100, and the support screws 210 on the support frames 400 corresponding to the side molds 200 are provided with a plurality of first threaded holes 410, and the support frames moved into place are connected by the support screws inserted at the first threaded holes; a plurality of lifting and lowering rolling support seats 500 are installed on the support frames 400, and the length of the rolling support seats 500 is adapted to the length of the side molds 200, and the upwardly protruding rolling support seats provide rolling support for the side molds, which are used for adjusting and aligning the side molds.

[0025] The above-mentioned mold for prefabricated box girders includes a bottom mold, multiple spliced ​​side molds, and an end mold installed at the end position; support frames are provided on both sides of the bottom mold, and the support screws corresponding to the side molds are provided with multiple first threaded holes on the support frames, and the support frames moved into place are connected by supporting screws inserted at the first threaded holes; multiple lifting and lowering rolling support seats are installed on the support frames, and the upwardly protruding rolling support seats provide rolling support for the side molds; when installing the side molds, the side molds can be hoisted and placed on the rolling support seats, and then adjusted for alignment and installation, thereby reducing the hanging time of the side molds and reducing risks; rapid alignment is achieved by pushing, thereby improving assembly efficiency.

[0026] Furthermore, if Figure 5 As shown, a groove 420 extending along the length direction is provided in the middle of the support frame 400; a rolling support seat 500 is provided at the groove 420, and the rolling support seat 500 is adjusted by the push structure 600 to move vertically along the groove 420, so that the rolling support part of the rolling support seat is higher than the top surface of the support frame, which is used for rolling support of the bottom surface of the side mold; the groove is used as a space for lifting and lowering activities, providing a accommodating position for the rolling support seat, so that the rolling support seat can be lowered to a height lower than the side mold.

[0027] Furthermore, if Figure 6 As shown, the rolling support seat 500 includes a support block 510, and a plurality of universal ball bearings 520 are installed on the top of the support block 510; the width of the support block 510 is adapted to the groove width of the groove 420, and the two sides of the support block slide along the groove wall of the groove; the bottom of the support block 510 is provided with a first sliding inclined surface 511; Figure 4 , Figure 7 As shown, the push structure 600 includes a jack 610 and a push block 620 installed at the end of the piston rod of the jack; a second sliding inclined surface 621 is correspondingly provided on the top of the push block 620, and the second sliding inclined surface 621 and the first sliding inclined surface 511 are slidably matched with each other; the jack drives the push block to move, realizes the lifting and lowering of the support block, and changes the position of the universal ball bearing; the lifting and lowering activities of the rolling support seat are realized by the sliding inclined surface matching, and the driving component can be installed on the side, which can reduce the occupation of the vertical space and facilitate the design and layout of the overall structure;

[0028] Furthermore, a plurality of recessed grooves are provided on the top surface of the support block, and the plurality of recessed grooves are evenly spaced along the length direction of the support block, and a plurality of universal ball bearings are installed inside each recessed groove, and the top of the rolling ball of the universal ball bearing protrudes from the notch of the recessed groove and is higher than the top surface of the support block, and the rolling balls of the plurality of universal ball bearings form a rolling support plane for slidingly supporting the bottom of the side mold, so that the position of the side mold can be adjusted by pushing, and the position of the support screw can correspond to the position of the first threaded hole, so as to quickly connect and assemble; it should be noted that after the support screw is installed in place, the rolling support seat can be adjusted to drop until the rolling ball of the universal ball bearing is separated from the bottom surface of the bottom mold, and the side mold is supported by the support screw, without the support of the universal ball bearing, thereby reducing the problem of damage caused by long-term stress on the universal ball bearing;

[0029] Furthermore, the higher end of the first sliding bevel 511 is located on the side away from the bottom mold 100; a plurality of guide holes 430 are provided at the groove wall of the groove 420 away from the bottom mold 100; a guide block 622 is fixedly provided on the wall surface of the push block 620 away from the second sliding bevel 621, and the push block 620 slides along the guide hole 430 via the guide block 622; the jack 610 is installed on the side wall of the support frame 400 away from the bottom mold, and the piston rod of the jack is arranged corresponding to the guide hole, and a push plate is fixedly provided at the end of the piston rod of the jack 610, and the push plate is fixedly connected to the end of the guide block 622 by bolts; this structure The structural design allows the jack to be located outside for easy access to electricity and for convenient inspection and disassembly. In addition, a rolling support seat is driven and pushed by two pushing structures. The two pushing structures in the same group are symmetrically arranged about the center of the rolling support seat. Correspondingly, a corresponding number of guide holes are arranged on the groove wall for installing push blocks. The two pushing structures provide sufficient pushing support force to enable the rolling support seat to be lifted and lowered smoothly while maintaining effective supporting force. It should be noted that the electric jack is a common pushing device and instrument that can be purchased directly on the market, and the specific structure will not be described in detail.

[0030] Furthermore, a sliding block is fixedly provided on the wall surface of the support block close to the bottom mold; a sliding groove is correspondingly provided on the groove wall of the groove, and the support block slides vertically along the sliding groove via the sliding block, further limiting the movement of the support block so that it can only move vertically, and correspondingly maintaining the coordination between the first sliding inclined surface and the second sliding inclined surface for subsequent pushing support.

[0031] Further, as 3 to Figure 5As shown, there are oppositely arranged slots 440 between the two slot walls at both ends of the groove 420; the minimum spacing between the two slots on the same side is an integer multiple of the length of the side mold; a baffle 700 is arranged between the opposite slots 440, and the top of the baffle 700 is higher than the top surface of the support frame 400. The baffle is used as a blocking component to determine the end position limit of the side mold, and the side mold can be subsequently pushed against one side of the bottom mold to complete the alignment of the support screw and the first threaded hole, which is convenient for operation and assembly.

[0032] Furthermore, the top of the baffle is provided with strip holes running through both sides, which can be used as a position for grasping the baffle to facilitate the taking and placing of the baffle; more specifically, when in use, the baffle is prevented at only one end to form a one-sided blockage; then, ensure that the rolling support seat is in a raised position to provide a sliding support plane; then, the hoisted side mold is placed on the rolling support seat and close to the baffle position; the staff pushes the side mold to the abutment baffle, and then pushes the side mold toward the bottom mold so that the side mold abuts against the bottom mold. At this time, the position of the support screw on the side mold corresponds to the position of the first threaded hole, and by screwing Turn the supporting screw to make it fixedly installed at the first threaded hole for support; the subsequent side molds are installed in sequence, with the previous side mold as the end limit, and can also be quickly aligned, and the two adjacent side molds are fixed by bolts; after the side molds on both sides are installed, the thrust of the jacking structure can be removed, and the jack retracts the piston rod to move the rolling support seat down to the preset position and detach from the side mold; it should be noted that there are subsequent steps of placing the steel frame, installing the end mold, and pouring concrete, which are all common steps in prefabricated box girders at present, and the details will not be repeated.

[0033] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A mold for prefabricated box beams, comprising a bottom mold, a plurality of spliced ​​side molds, and an end mold installed at the end position, and a fence is built to form a forming cavity; characterized in that: Support frames are provided on both sides of the bottom mold, and a plurality of first threaded holes are provided on the support frames corresponding to the support screws of the side molds, and the support frames moved into position are connected by the support screws inserted in the first threaded holes; The support frame is equipped with a plurality of lifting and lowering rolling support seats, the length of which is adapted to the length of the side mold, and the upwardly protruding rolling support seats provide rolling support for the side mold, which is used for adjusting and aligning the side mold.

2. A mold for prefabricated box beams according to claim 1, characterized in that: A groove extending along the length direction is provided in the middle of the support frame; The rolling support seat is arranged in the groove, and the rolling support seat is adjusted by the push structure to move vertically along the groove, so that the rolling support part of the rolling support seat is higher than the top surface of the support frame, which is used to carry out rolling support on the bottom surface of the side mold.

3. A mold for prefabricated box beams according to claim 2, characterized in that: The rolling support seat includes a support block, and a plurality of universal ball bearings are installed on the top of the support block; the width of the support block is adapted to the groove width of the groove, and the two sides of the support block slide along the groove wall of the groove; A first sliding inclined surface is provided at the bottom of the support block; The push structure includes a jack and a push block installed at the end of the piston rod of the jack; a second sliding inclined surface is correspondingly provided on the top of the push block, and the second sliding inclined surface and the first sliding inclined surface are slidably matched with each other; the jack drives the push block to move, realizes the lifting and lowering of the support block, and changes the position of the universal ball bearing.

4. A mold for prefabricated box beams according to claim 3, characterized in that: The first sliding inclined surface has a higher inclined end located at a side away from the bottom mold; a plurality of guide holes are provided at the groove wall away from the bottom mold; a guide block is fixedly provided on the wall surface of the push block away from the second sliding inclined surface, and the push block slides along the guide hole through the guide block; The jack is installed on the side wall of the support frame away from the bottom mold. The piston rod of the jack is arranged corresponding to the guide hole. The end of the piston rod of the jack is fixed with a push plate, and the push plate is fixedly connected to the end of the guide block by bolts.

5. The mold for prefabricated box beam according to claim 4, characterized in that: There are oppositely arranged clamping grooves between the two groove walls at both ends of the groove; The minimum distance between two slots on the same side is an integer multiple of the side mold length; A baffle is disposed between the opposite slots, and the top of the baffle is higher than the top surface of the support frame.

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