Device and method for positioning the diameter spacing of steel cages during the manufacture and installation of prefabricated jacking steel bars

Abstract

The device and method for positioning the diameter spacing of the steel cage during the manufacture and installation of prefabricated top pipe steel bars relate to the field of building construction. It includes a folding steel plate manufacturing and installation stand and an auxiliary device used in conjunction with it, the auxiliary device includes a main steel plate, a steel frame, an angle steel, and a pulley block; the main steel plate is in a "[" shape, the upper part of the main steel plate is embedded in the slide groove of the steel cage manufacturing and installation stand, and the lower part of the main steel plate is installed with a pulley block with a locking structure; the steel frame is a plurality of steel bars fixedly connected vertically along the main steel plate, and the spacing between each steel bar is the same; the angle steel is fixedly connected along the transverse and longitudinal frames of the main steel plate; the pulley block is placed on the track at the bottom of the steel cage manufacturing and installation stand. The present invention can effectively improve the construction efficiency, and a complete steel cage can be manufactured with the cooperation of a small number of construction personnel, which greatly reduces the investment of construction personnel and reduces labor costs. The manufacturing materials are easy to obtain and the cost is low, which brings considerable economic benefits.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a device and method for positioning the diameter and spacing of a steel cage when prefabricated jacking steel bars are manufactured and installed. Background Art

[0002] In the field of pipe jacking prefabrication construction, especially for large-diameter and long-distance pipe jacking, the total jacking force of the line is generally designed to be large, and the permissible jacking force of the pipe section is required to be high. The design of large-diameter pipe jacking requires the steel bar model to be large in diameter and densely arranged. It is difficult to erect the annular reinforcement cage, the spacing of the reinforcement is difficult to control, and the stability of the vertical main reinforcement is poor when it is welded to the annular reinforcement. At the same time, the overall reinforcement cage requires precise roundness and high quality requirements for reinforcement welding. Therefore, there are certain construction difficulties and quality risks in the installation of pipe jacking reinforcement. Summary of the invention

[0003] In order to solve the problems of difficulty in making steel cage and great quality risks in the production and installation of jacking steel bars, the present invention provides a method for locating the diameter spacing of steel cages during the production and installation of prefabricated jacking steel bars. Another object of the present invention is to provide a device used in the method.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a method for positioning the diameter spacing of a steel cage when prefabricated top pipe steel bars are manufactured and installed, which is characterized by: using a conventional top pipe steel cage manufacturing device folding steel plate manufacturing and installation stand to manufacture the steel cage, and using an auxiliary device at the same time, an auxiliary device is set in each 90° direction of the manufacturing and installation stand, and the spacing of the annular ribs is limited by the steel skeleton on one side of the main steel plate, and the annular ribs are stabilized at the same time. Moreover, the slidable nature of the auxiliary device can be utilized, and the horizontal axis of the steel cage can be determined by changing four angles together, and the folding steel plate of the manufacturing and installation stand is simultaneously coordinated to form an angle displacement, so that the annular ribs form a steel cage with precise roundness under the joint action, which specifically includes the following steps:

[0005] Step 1: Weld and fix the steel bar skeleton on one side of the main steel plate according to the circumferential reinforcement spacing required by the design;

[0006] Step 2: Mark the inner diameter of the top pipe reinforcement cage on the bottom plate of the reinforcement installation stand according to the design requirements;

[0007] Step 3: According to the design requirements of the inner diameter of the top pipe reinforcement cage, manually push and pull the main steel plate so that the outer edge of the steel plate, i.e. the position in the reinforcement frame groove, falls on the mark. The same method is used for the devices in the four directions of 90° around the ring. When the four devices are positioned, lock the lower pulley block. At this time, the horizontal positioning point of the inner diameter of the reinforcement cage can be determined;

[0008] Step 4: All the folding steel plates of the steel bar installation stand are opened at the same time, forming a certain angle according to the inner diameter of the positioned steel bar cage. At this time, the auxiliary device and the steel plate on the steel bar installation stand can form a limit for the inner ring ribs of the steel bar cage, and the inner ring ribs can form a precise ring by abutting against the present invention and the steel plate installation;

[0009] Step 5: Due to the large diameter of the pipe segment, the annular reinforcement will be divided into multiple sections for welding. The construction workers place the bent steel bars on the steel frame and close to the steel plate, and then weld the multiple sections of steel bars firmly. At this time, the inner annular reinforcement with accurate inner diameter is formed. Each layer of the steel frame is installed with inner annular reinforcement in turn, and the spacing between the steel bars is the same;

[0010] Step 6: After the inner ring reinforcement is made, the construction workers weld and fix the longitudinal main reinforcement. The longitudinal main reinforcement is processed into a rectangular shape in advance together with the locking reinforcement and the frame reinforcement. After the main reinforcement is fixed, the outer ring reinforcement is welded. The outer ring reinforcement is made and installed in the same way as the inner ring reinforcement. At this time, a complete steel cage is completed.

[0011] A device for positioning the diameter and spacing of a steel cage when prefabricated top pipe reinforcement is manufactured and installed, comprising a folding steel plate manufacturing and installation stand, characterized in that: it also includes an auxiliary device used in conjunction with the stand, the auxiliary device comprising a main steel plate, a steel frame, an angle steel, and a pulley block; the main steel plate is in a "[" shape, the upper part of the main steel plate is embedded in the slide groove of the steel cage manufacturing and installation stand, and a pulley block with a locking structure is installed at the lower part of the main steel plate; the steel frame is a plurality of steel bars fixedly connected vertically along the main steel plate, and the spacing between the steel bars is the same; the angle steel is fixedly connected along the transverse and longitudinal frames of the main steel plate; the pulley block is placed on the track at the lower part of the steel cage manufacturing and installation stand.

[0012] The steel bar skeleton adopts steel bars with a diameter of 18 mm. The steel bar skeleton adopts steel bars with a diameter of 18 mm. The steel bar model with a diameter larger than the diameter of the main steel bar is selected to ensure the stable placement of the steel bar cage. The steel bar length is 450 cm and the spacing between each steel bar is 40-80 mm.

[0013] There are three angle steels in total, using 30mm*30mm*3mm equal-leg angle steels.

[0014] The main steel plate is 2.8m high and 1.2cm thick. An anti-sway device is provided on the upper part of the main steel plate to prevent the steel plate from swaying in the slide groove.

[0015] The pulley block is fixedly welded to the angle steel at the lower part of the main steel plate with two pulleys, and the rolling direction is the same direction as the steel frame. The locking structure is fixed by an iron pin.

[0016] The steel bar skeleton and angle steel are welded to the main steel plate.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The present invention uses an auxiliary steel cage installation stand to effectively limit the spacing and diameter of the steel cage during steel installation, thereby effectively ensuring the quality acceptance of the spacing and diameter of the steel cage and better improving the overall quality level.

[0019] (2) The present invention uses a steel bar skeleton on one side to solve the problem that the circumferential reinforcement and longitudinal main reinforcement cannot be placed stably. It provides convenient conditions for the manufacture and installation of the circumferential reinforcement and longitudinal main reinforcement of the steel cage, making it more convenient for construction workers to operate, while effectively improving construction efficiency and shortening the construction period.

[0020] (3) The sliding property change of the present invention can be applied to pipe segment products of different diameters, enriching the scope of production and construction, and providing prerequisites and construction experience for the production of other jacking pipe products.

[0021] (4) The present invention can be used together with the manufacturing and installation stand to effectively improve construction efficiency. A small number of construction workers can produce a complete steel cage, which greatly reduces the investment of construction workers and reduces labor costs. In addition, the materials used in the present invention are easy to obtain and low in cost. In general, the present invention can improve construction efficiency, reduce costs, and bring considerable economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the auxiliary device of the present invention.

[0023] Figure 2 It is a side view of the auxiliary device structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the application of the present invention.

[0025] In the figure: 1. Main steel plate, 2. Steel bar skeleton, 3. Angle steel, 4. Pulley block. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0027] Example 1

[0028] like Figure 3 , a device for positioning the diameter and spacing of a steel cage when prefabricating top pipe reinforcement, including a folding steel plate installation stand, and also including an auxiliary device used in conjunction with the stand. The folding steel plate installation stand is a conventional top pipe reinforcement cage production device, which is composed of a circular base, a circular top plate, and a divergent folding steel plate. Figure 1 , Figure 2, the auxiliary device includes a main steel plate 1, a steel bar skeleton 2, an angle steel 3, and a pulley block 4; the main steel plate 1 is a "[" shape, which can reduce material costs and facilitate push-pull operations by construction personnel. The upper part of the main steel plate 1 is embedded in the slide groove of the steel cage installation stand. A small structural device can be set on the main steel plate to prevent the steel plate from shaking in the slide groove. In this embodiment, two nuts are welded and fixed. A pulley block 4 with a locking structure is installed at the lower part of the main steel plate 1; the steel bar skeleton 2 is a plurality of steel bars fixedly connected vertically along the main steel plate 1, and the spacing between each steel bar is the same; the angle steel 3 is fixedly connected along the transverse and longitudinal skeletons of the main steel plate 1 to enhance the rigidity and stability of the steel plate; the pulley block 4 is placed on the track at the lower part of the steel cage installation stand.

[0029] The steel frame 2 uses steel bars with a diameter of 18 mm, and a steel bar model with a diameter larger than the diameter of the main steel bar is selected to ensure the stable placement of the steel cage. The steel bar length is 450 cm, and inner and outer double rows of annular bars can be placed without affecting the construction personnel. The frame spacing is determined according to the design spacing of the jacking steel cage, and the spacing between each steel bar is 40-80 mm.

[0030] There are three angle steels 3, which are 30mm*30mm*3mm equal-leg angle steels.

[0031] The main steel plate 1 is 2.8m high and 1.2cm thick.

[0032] The pulley block 4 is welded to the angle steel 3 at the bottom of the main steel plate 1 with two pulleys, and the rolling direction is the same as the steel skeleton 2. The diameter of the steel cage is changed by manually pushing and pulling the main steel plate. The locking structure is fixed with an iron pin.

[0033] The steel bar skeleton 2 and the angle steel 3 are welded to the main steel plate 1 .

[0034] Example 2

[0035] The specific construction method for positioning the diameter and spacing of the steel cage when using the device described in Example 1 to carry out prefabricated top pipe steel bar production and installation is as follows:

[0036] Step 1: Weld and fix the steel bar skeleton 2 on one side of the main steel plate 1 according to the annular reinforcement spacing required by the design.

[0037] Step 2: Mark the inner diameter of the jacking steel cage on the bottom plate of the steel bar installation stand according to the design requirements.

[0038] Step 3: According to the inner diameter of the jacking steel cage required by the design, manually push and pull the main steel plate 1 so that the outer edge of the steel plate, i.e., the position in the groove of the steel frame 2, falls on the mark. The same method is used for the devices in the four directions of 90° around the circle. When the four devices are positioned, lock the lower pulley block 4. At this time, the horizontal positioning point of the inner diameter of the steel cage can be determined.

[0039] Step 4: All the folding steel plates of the steel bar installation stand are opened at the same time, forming a certain angle according to the inner diameter of the positioned steel cage. At this time, the present invention and the steel plates on the steel bar installation stand can form a limit for the inner ring reinforcement of the steel cage, and the inner ring reinforcement can form a precise ring by abutting against the present invention and the steel plate.

[0040] Step 5: Due to the large diameter of the pipe segment, the annular reinforcement will be welded in multiple sections. The construction workers place the bent steel bars on the steel frame 2 and close to the steel plate, and then weld the multiple sections of steel bars firmly, at this time, the inner annular reinforcement with accurate inner diameter is formed. Each layer of the steel frame is installed with inner annular reinforcement in turn, and the spacing between the steel bars is the same.

[0041] Step 6: After the inner ring reinforcement is made, the construction workers weld and fix the longitudinal main reinforcement. The longitudinal main reinforcement is processed into a rectangular shape in advance together with the locking reinforcement and the frame reinforcement. After the main reinforcement is fixed, the outer ring reinforcement is welded. The outer ring reinforcement is made and installed in the same way as the inner ring reinforcement. At this point, a complete steel cage is completed.

[0042] The present invention adopts a self-made auxiliary device, which can be used together with the stand when the prefabricated jacking pipe reinforcement cage is manufactured and installed. Multiple functions can be realized by simply processing steel plates, reinforcement skeletons, and simple pulley devices. The reinforcement skeleton can be manufactured according to different types of pipe sections and different design requirements, and can also be optimized as an adjustable device. The sliding function also allows the present invention to be applicable to different pipe section diameters. The present invention makes the manufacture of prefabricated jacking pipe reinforcement cages more convenient and quick, can effectively increase construction efficiency, reduce personnel cost investment, and at the same time standardize quality control points such as reinforcement spacing and diameter, so that the overall quality of the jacking pipe is greatly improved.

[0043] The above contents are further detailed descriptions of the present invention in combination with the preferred technical solutions, and the specific implementation of the invention cannot be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, simple deductions and substitutions can be made without departing from the concept of the present invention, which should be regarded as the protection scope of the present invention.

Claims

1. A method for locating the diameter spacing of steel cages during the manufacture and installation of prefabricated jacking steel bars, characterized by: A folding steel plate manufacturing and installation stand is used to manufacture a steel cage. The folding steel plate manufacturing and installation stand is a device for manufacturing a jacking steel cage, and an auxiliary device is used in conjunction with the auxiliary device. The auxiliary device includes a main steel plate, a steel frame, an angle steel, and a pulley block. The main steel plate is in a "[" shape, and the upper part of the main steel plate is embedded in the slide groove of the steel cage manufacturing and installation stand, and a pulley block with a locking structure is installed at the lower part of the main steel plate. The steel frame is a plurality of steel bars fixedly connected vertically along the main steel plate, and the spacing between each steel bar is the same. The angle steel is fixedly connected along the transverse and longitudinal frames of the main steel plate. The pulley block is placed on the track at the lower part of the steel cage manufacturing and installation stand, and an auxiliary device is set in each 90° direction of the manufacturing and installation stand. The spacing of the annular ribs is limited by the steel frame on one side of the main steel plate, and the annular ribs are stabilized at the same time. By utilizing the slidable nature of the auxiliary device, the horizontal axis of the steel cage can be determined by changing four angles together, and the folding steel plate of the manufacturing and installation stand is simultaneously matched to form an angle displacement, and the annular ribs form a steel cage with precise roundness under the joint action, which specifically includes the following steps: Step 1: Weld and fix the steel bar skeleton on one side of the main steel plate according to the circumferential reinforcement spacing required by the design; Step 2: Mark the inner diameter of the top pipe reinforcement cage on the bottom plate of the reinforcement installation stand according to the design requirements; Step 3: According to the design requirements of the inner diameter of the top pipe reinforcement cage, manually push and pull the main steel plate so that the outer edge of the steel plate, i.e. the position in the reinforcement frame groove, falls on the mark. The same method is used for the devices in the four directions of 90° around the ring. When the four devices are positioned, lock the lower pulley block. At this time, the horizontal positioning point of the inner diameter of the reinforcement cage can be determined; Step 4: All the folding steel plates of the steel bar installation stand are opened at the same time, forming a certain angle according to the inner diameter of the positioned steel cage. At this time, the auxiliary device and the steel plate on the steel bar installation stand form the limit of the inner ring reinforcement of the steel cage. The inner ring reinforcement can form a precise ring by abutting against the auxiliary device and the steel plate. Step 5: Due to the large diameter of the pipe segment, the annular reinforcement will be divided into multiple sections for welding. The construction workers place the bent steel bars on the steel frame and close to the steel plate, and then weld the multiple sections of steel bars firmly. At this time, the inner annular reinforcement with accurate inner diameter is formed. Each layer of the steel frame is installed with inner annular reinforcement in turn, and the spacing between the steel bars is the same; Step 6: After the inner ring reinforcement is made, the construction workers weld and fix the longitudinal main reinforcement. The longitudinal main reinforcement is processed into a rectangular shape in advance together with the locking reinforcement and the frame reinforcement. After the main reinforcement is fixed, the outer ring reinforcement is welded. The outer ring reinforcement is made and installed in the same way as the inner ring reinforcement. At this time, a complete steel cage is completed.

2. The method for positioning the diameter spacing of steel cages during the manufacture and installation of prefabricated jacking steel bars according to claim 1 is characterized by: The steel bar skeleton adopts steel bars with a diameter of 18 mm, and a steel bar model with a diameter larger than the diameter of the main steel bar is selected to ensure the stable placement of the steel bar cage. The steel bar length is 450 cm, and the spacing between each steel bar is 40-80 mm.

3. The method for positioning the diameter spacing of steel cages during the manufacture and installation of prefabricated jacking steel bars according to claim 1 is characterized by: There are three angle steels in total, using 30mm*30mm*3mm equal-leg angle steels.

4. The method for positioning the diameter spacing of steel cages during the manufacture and installation of prefabricated jacking steel bars according to claim 1 is characterized by: The main steel plate is 2.8m high and 1.2cm thick. An anti-sway device is provided on the upper part of the main steel plate to prevent the steel plate from swaying in the slide groove.

5. The method for positioning the diameter spacing of steel cages during the manufacture and installation of prefabricated jacking steel bars according to claim 1 is characterized by: The pulley block is fixedly welded to the angle steel at the lower part of the main steel plate with two pulleys, and the rolling direction is the same direction as the steel frame. The locking structure is fixed by an iron pin.

6. The method for positioning the diameter spacing of steel cages during the manufacture and installation of prefabricated jacking steel bars according to claim 1 is characterized by: The steel bar skeleton and angle steel are welded to the main steel plate.

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