Prefabricated beam piece bottom support reserved hole channel forming device

Abstract

The utility model provides a precast beam piece bottom support reserved hole channel forming device which comprises a hole channel pipe, an embedded connector is fixedly arranged in a hole in the upper end of the hole channel pipe, a positioning baffle is fixedly arranged at the lower end of the hole channel pipe, an adjusting nut is fixedly arranged on the lower portion of the positioning baffle, and a fixing through hole is formed in the positioning plate. The fixing through hole and the threaded hole of the adjusting nut are coaxially arranged. And the upper end of the screw rod rotationally penetrates through the screw hole of the adjusting nut until reaching the interior of the hole channel pipe. The lower end of the screw is provided with a demoulding structure. A supporting structure is arranged at the lower end of the formwork dismounting structure. According to the reserved hole channel forming device, the operation process of forming a pre-buried hole in the bottom of the precast beam piece is simple and convenient, displacement and slurry leakage are not prone to occurring during concrete pouring and vibrating, the positioning precision is greatly improved, and the quality of a reserved hole channel is good. And after concrete is solidified, dismounting is convenient, the dismounting efficiency is improved, repeated use can be achieved, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering beam prefabrication, in particular to a prefabricated beam bottom support reserved channel forming device. Background Art

[0002] In the prior art, the prefabrication of the top block of the segmental beam pier requires reserving holes at the bottom plate of the beam piece for use when installing the support. The reserved holes are usually set by combining pre-buried PVC pipes and positioning steel bar brackets. The materials are invested once and cannot be reused, resulting in waste of resources and increased costs. In addition, during the concrete pouring and vibration process, the pre-buried PVC pipes and positioning steel bar brackets are very easy to deviate or leak and block the pipes, which brings great difficulties to the later construction and is not easy to remove. There is an urgent need for a simple, convenient and small device to improve the accuracy and quality of the reserved holes. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a prefabricated beam bottom support reserved channel forming device to solve the problem of the prior art reserved channel forming device being simple to install, convenient to assemble and disassemble, not prone to offset and reusable.

[0004] The utility model provides a device for forming a reserved channel for a bottom support of a prefabricated beam piece, the device comprising: a channel tube, an embedded joint is fixedly arranged in a hole at the upper end of the channel tube, a positioning baffle is fixedly arranged at the lower end of the channel tube, an adjusting nut is fixedly arranged at the lower part of the positioning baffle, a fixed through hole is provided on the positioning baffle, and the fixed through hole is coaxially arranged with the threaded hole of the adjusting nut; a screw rod, the upper end of the screw rod is rotated to pass through the screw hole of the adjusting nut until it is inside the channel tube; a demoulding structure is arranged at the lower end of the screw rod; and a supporting structure is arranged at the lower end of the demoulding structure.

[0005] Furthermore, the demolding structure comprises: an impact sleeve and a demolding stopper, wherein the impact sleeve is sleeved on the screw rod, and the upper portion of the demolding stopper has a threaded hole threadedly connected to the lower end of the screw rod.

[0006] Furthermore, the supporting structure includes: a supporting base plate, a limiting nut and a height-adjusting screw, wherein the supporting base plate is arranged at the lower end of the height-adjusting screw, and the upper portion of the supporting base plate has a threaded hole for fixedly connecting the height-adjusting screw; the lower end of the demolding block has a height-adjusting hole, and the upper end of the height-adjusting screw extends into the height-adjusting hole, and the height of the demolding block on the height-adjusting screw is limited and adjusted by the limiting nut rotatably connected to the height-adjusting screw.

[0007] Furthermore, the channel tube, the embedded joint, the positioning baffle and the adjusting nut are fixedly connected by welding.

[0008] Furthermore, the embedded joint is a closed steel pipe structure, which includes a grouting pipe joint and an exhaust pipe joint, wherein the grouting pipe joint and the exhaust pipe joint are both fixedly arranged on the upper end of the channel pipe.

[0009] According to the above embodiments, the precast beam bottom support reserved channel forming device provided by the utility model has at least the following benefits: the precast beam bottom support reserved channel forming device performs a hole forming operation for pre-buried holes in the precast beam bottom, and the operation process is simple and convenient, and it is not easy to shift and leak during concrete pouring and vibration, the positioning accuracy is greatly improved, and the reserved channel quality is good. After the concrete solidifies, it is easy to dismantle, improves the disassembly efficiency, and can be reused, reducing the use cost.

[0010] In addition, the embedded joint is connected with the grouting duct and the exhaust pipe, which plays a role in assisting the fixing of the exhaust pipe and the grouting duct, and provides a grouting channel for the subsequent connection between the support and the prefabricated beam.

[0011] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the present utility model.

[0013] Figure 1 A structural diagram of a prefabricated beam bottom support reserved channel forming device provided by the utility model.

[0014] Description of reference numerals:

[0015] 1-channel pipe, 2-embedded joint, 3-positioning baffle, 4-adjusting nut, 5-screw, 6-mold removal structure, 7-support structure;

[0016] 21- grouting pipe joint, 22- exhaust pipe joint;

[0017] 61-impact sleeve, 62-mold removal block;

[0018] 71-support base plate, 72-limiting nut, 73-height adjustment screw. DETAILED DESCRIPTION

[0019] Various exemplary embodiments of the present invention are now described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features and embodiments of the present invention.

[0020] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention will be apparent to those skilled in the art. The present application description and examples are merely exemplary.

[0021] The utility model provides a prefabricated beam bottom support reserved channel forming device, such as Figure 1 The figure shows a schematic diagram of the structure of the reserved channel forming device. In a specific implementation, the reserved channel forming device includes: a channel pipe 1, an embedded joint 2 is fixedly arranged in the hole at the upper end of the channel pipe 1, and the embedded joint 2 is used to connect the pre-buried grouting conduit and the exhaust pipe, and after the reserved channel forming device is removed, the ends of the grouting conduit and the exhaust pipe can be extended into the reserved channel, so as to facilitate the injection of concrete into the reserved channel when the prefabricated beams and the supports are connected later.

[0022] A positioning baffle 3 is fixedly provided at the lower end of the channel tube 1, and an adjusting nut 4 is fixedly provided at the lower part of the positioning baffle 3. The positioning baffle 3 has a fixed through hole, and the fixed through hole is coaxially arranged with the threaded hole of the adjusting nut 4. In this embodiment, the channel tube 1, the embedded joint 2, the positioning baffle 3 and the adjusting nut 4 are fixedly connected together by welding.

[0023] The screw rod 5 , the upper end of which is rotated through the screw hole of the adjusting nut 4 , until it reaches the interior of the channel tube 1 .

[0024] A demoulding structure 6 is provided at the lower end of the screw rod 5, which is used to separate the channel pipe 1 from the poured concrete when the concrete is in a semi-solidified state to achieve demoulding.

[0025] A support structure 7 is provided at the lower end of the demoulding structure 6, and the height position of the channel pipe 1 is fixed by the support structure 7 to avoid deviation of the position of the reserved channel during pouring.

[0026] In a specific embodiment of the utility model, the demolding structure 6 includes: an impact sleeve 61 and a demolding stopper 62. The impact sleeve 61 is sleeved on the screw rod 5 and can slide up and down along the screw rod 5. The demolding stopper 62 has a threaded hole on the upper part, and the demolding stopper 62 is threadedly connected to the lower end of the screw rod 5 through the threaded hole and is located at the lower part of the impact sleeve 61. The impact sleeve 61 can slide up and down along the screw rod 5 between the demolding stopper 62 and the adjusting nut 4.

[0027] In a specific embodiment of the present invention, the support structure 7 comprises: a support base plate 71, a limit nut 72 and a height adjustment screw 73. The support base plate 71 is arranged at the lower end of the height adjustment screw 73, and the upper part of the support base plate 71 has a threaded hole for fixing the height adjustment screw 73.

[0028] The demolding block 62 has a height adjustment hole at the lower end, and the upper end of the height adjustment screw 73 extends into the height adjustment hole. The height adjustment hole has a diameter slightly larger than the outer diameter of the height adjustment screw 73, and the height adjustment screw 73 is movably connected to the height adjustment hole, so that the demolding block 62 can move up and down relative to the height adjustment screw 73. In addition, the height of the demolding block 62 on the height adjustment screw 73 is limited and adjusted by the limit nut 72 that is rotatably connected to the height adjustment screw 73. By changing the height of the limit nut 72 on the height adjustment screw 73, the height of the demolding block 62 on the height adjustment screw 73 is adjusted, thereby achieving the overall height of the entire reserved channel forming device. In this embodiment, the height adjustment hole at the lower part of the demolding block 62 has a certain depth, and the upper end of the height adjustment screw 73 can extend into the height adjustment hole to a certain length.

[0029] In a specific embodiment of the utility model, the embedded joint 2 is a closed steel pipe structure, which includes a grouting pipe joint 21 and an exhaust pipe joint 22. The grouting pipe joint 21 and the exhaust pipe joint 22 are both fixedly arranged on the upper end of the channel pipe 1. The grouting pipe joint 21 and the exhaust pipe joint 22 are respectively connected to the grouting conduit and the exhaust pipe, which are also pre-buried in the precast beam piece, and one end of which can be connected to the reserved channel, and is used to inject concrete into the reserved channel through the grouting conduit after the reserved channel of the precast beam piece is connected to the support, and fix the connection position.

[0030] The method of using the reserved channel forming device is as follows:

[0031] First, a hole is drilled at the reserved hole position of the prefabricated beam bottom plate template support. The hole diameter is preferably slightly larger than the channel pipe 1. The channel pipe 1 is inserted from below the bottom plate until the positioning baffle 3 is tightly stuck to the bottom template.

[0032] Further, the upper end of the screw rod 5 is rotated and screwed into the adjusting nut 4, and the impact sleeve 61 is installed from the lower end of the screw rod 5, and is actually sleeved on the screw rod 5. Then the demolding stopper 62 is rotated and tightened on the lower end of the screw rod 5.

[0033] Finally, the supporting base plate 71 is fixed and tightened at the lower end of the height adjusting screw 73, and the limiting nut 72 is threadedly connected to the height adjusting screw 73, and the upper end of the height adjusting screw 73 is inserted into the lower height adjusting hole of the demolding block 6. By adjusting the height of the limiting nut 72 on the height adjusting screw 73, and then adjusting the position of the demolding block 62 relative to the height adjusting screw 73, the height of the reserved channel forming device is adjusted, so that the adjustment of the entire device is firm and reliable.

[0034] After the concrete pouring is completed and in a semi-solidified state, the support structure 7 is removed, and then the impact sleeve 61 is slid up and down to hit the demoulding block 62, so that the channel pipe 1 is separated from the reserved channel on the prefabricated beam piece, and the device is removed.

[0035] The above description is only an illustrative specific implementation manner of the present utility model. Without departing from the concept and principle of the present utility model, any equivalent changes and modifications made by technicians in this field should fall within the scope of protection of the present utility model.

Claims

1. A device for forming a reserved channel for a bottom support of a prefabricated beam, characterized in that: The reserved channel forming device comprises: a channel tube (1), an embedded joint (2) is fixedly arranged in the hole at the upper end of the channel tube (1), a positioning baffle (3) is fixedly arranged at the lower end of the channel tube (1), an adjusting nut (4) is fixedly arranged at the lower part of the positioning baffle (3), a fixing through hole is provided on the positioning baffle (3), and the fixing through hole is coaxially arranged with the threaded hole of the adjusting nut (4); A screw rod (5), the upper end of which is rotated through the screw hole of the adjusting nut (4) until it reaches the interior of the channel tube (1); A demoulding structure (6) is provided at the lower end of the screw (5); A supporting structure (7) is provided at the lower end of the demoulding structure (6).

2. The device for forming a reserved channel for the bottom support of a prefabricated beam according to claim 1, characterized in that: The demoulding structure (6) comprises: an impact sleeve (61) and a demoulding stopper (62), wherein: The impact sleeve (61) is sleeved on the screw rod (5), and the upper part of the demoulding stopper (62) has a threaded hole threadedly connected to the lower end of the screw rod (5).

3. The device for forming a reserved channel for the bottom support of a prefabricated beam according to claim 2, characterized in that: The support structure (7) comprises: a support base plate (71), a limit nut (72) and a height adjustment screw rod (73), wherein: The supporting base plate (71) is arranged at the lower end of the height-adjusting screw rod (73), and the upper portion of the supporting base plate (71) has a threaded hole for fixedly connecting the height-adjusting screw rod (73); The lower end of the demoulding stopper (62) is provided with a height adjustment hole, and the upper end of the height adjustment screw (73) extends into the height adjustment hole. The height of the demoulding stopper (62) on the height adjustment screw (73) is limited and adjusted by the limit nut (72) rotatably connected to the height adjustment screw (73).

4. The device for forming a reserved channel for the bottom support of a prefabricated beam according to claim 1, characterized in that: The channel tube (1), the embedded joint (2), the positioning baffle (3) and the adjusting nut (4) are fixedly connected by welding.

5. The device for forming a reserved channel for the bottom support of a prefabricated beam according to claim 1, characterized in that: The embedded joint (2) is a closed steel pipe structure, which includes a grouting pipe joint (21) and an exhaust pipe joint (22), wherein: The grouting pipe joint (21) and the exhaust pipe joint (22) are both fixedly arranged on the upper end of the channel pipe (1).

Images