Positioning chuck
Through the design of the positioning chuck processing mold, the problem of anchor bolts offset in the construction of the rail passenger dedicated line contact network pillar foundation is solved, and high-precision pre-embedding and improvement of construction quality are achieved.
Patent Information
- Application Number
- CN202421150186.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-24
AI Technical Summary
In the construction of the railway passenger dedicated line contact network support foundation, the embedded anchor bolts often deviate, resulting in rework, and the construction accuracy and positioning accuracy are difficult to meet the design requirements.
A positioning chuck processing mold is designed to accurately position the anchor bolts through the combination of chuck, fixing frame and base to ensure that the bolts are perpendicular to the horizontal plane of the foundation, and the errors between the spacing and diagonal distances of adjacent bolts are ≤1mm.
It significantly improves the accuracy and construction quality of anchor bolts, reduces construction costs and personnel investment, meets the requirements of strength, stiffness and stability, and is convenient to install and disassemble.
Smart Images
Figure CN222649504U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for controlling the position of pre-buried bolts in the foundation of a contact network support column of a railway passenger dedicated line. Background Art
[0002] The construction quality of the contact network pillar foundation of the railway passenger dedicated line is the key to the construction of the post-control station project. The foundation construction requires high precision and positioning accuracy, and must be constructed strictly in accordance with the design, with an allowable error of 1mm. In order to achieve efficient and high-quality construction of the contact network pillar foundation, advanced positioning methods must be used to accurately position the foundation. When constructed according to traditional techniques, the embedded anchor bolts often deviate after the foundation concrete is poured, resulting in rework. In order to avoid such problems and to ensure the construction quality, it is necessary to develop a three-positioning chuck processing mold for the contact network pillar foundation of the roadbed, which greatly improves the embedded accuracy of the anchor bolts and the construction quality. Utility Model Content
[0003] The technical problem to be solved by the utility model is: to design a utility model auxiliary device to ensure that the embedded bolts are perpendicular to the horizontal plane of the foundation, the distance of the top of the bolts deviating from the vertical position should be ≤ 1mm, and the error of the spacing and diagonal distance between two adjacent or separated bolts is ≤ 1mm. At the same time, it can meet the requirements of strength, rigidity and stability, and at the same time, it is low in cost, safe and reliable, and easy to install and disassemble.
[0004] The technical solution adopted by the utility model to solve the above technical problems is: the relative position between the bolts can be made more accurate by processing the anchor bolt group with a positioning chuck, thereby improving the processing quality. The positioning chuck consists of a chuck, a fixing frame and a base. The chuck is two steel plates with an outer diameter of 80cm, an inner diameter of 30cm and a thickness of 0.5cm, which are processed in the factory according to the size and layout form in the anchor bolt pre-embedded design drawing. The fixing frame is composed of a No. 20 channel steel main frame, a steel bar connecting rod, and a steel bar diagonal brace. The fixing frame is welded on both sides of the double chuck, and the fixing frames on both sides have the same structure. The single-side structure is that two No. 20 channel steels with a length of 80cm are placed opposite each other with a spacing of 30cm, and are connected by three steel bars with a length of 30cm and a diameter of 12mm. The steel bars are located at both ends and the middle part of the channel steel. A 65cm long steel bar is set on both sides of the single-sided fixing frame for support and reinforcement. The base is composed of 10 pieces of No. 20 channel steel, of which one piece is 60cm long, four pieces are 80cm long, three pieces are 100cm long, and two pieces are 120cm long. The fixing frame is connected to the double positioning chuck and the base by full welding. The processing steps of the positioning chuck anchor bolts are as follows: ① Install several anchor bolts on chucks 1 and 2, and the length of the threaded end of each anchor bolt extending out of chuck 1 is the same; ② First install a nut on each anchor bolt, and the installation position of each nut should be kept the same, while ensuring that the length of the bolt on the outside of each nut meets the requirements of installing one chuck and one nut; ③ Install a chuck 3 that is exactly the same as chucks 1 and 2 on the outside of the first nut on each anchor bolt, and then install the second nut on each anchor bolt on the outside of chuck 3 to fix chuck 3; ④ Weld the first circle of reinforcing steel bars with a diameter of 20mm at 30 to 40cm from the inside of chuck 3, and weld the second circle of reinforcing steel bars at 60 to 70cm from the inside of chuck 3; ⑤ Take out the welded anchor bolt group, and weld a 20mm diameter round steel bar with a hook on each anchor bolt, and ensure that the hook faces inward during welding; ⑥ Transport the processed anchor bolt group to the site for installation.
[0005] Compared with the prior art, the utility model has the following advantages: the application of the device can improve the processing accuracy of the pre-embedded foundation bolt group to a great extent, reduce the construction cost and personnel input, and improve the construction quality. The utility model device has been used many times in actual projects and has been proven to meet the requirements of strength, rigidity and stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1-1 . Front view of the positioning chuck of the utility model.
[0007] Figure 1-2 . Left side view of the positioning chuck of the utility model.
[0008] Figure 1-3 . A top view of the positioning chuck of the utility model.
[0009] Figure 2 . Front view of the anchor bolt installed on the positioning chuck of the utility model.
[0010] Figure 3 . Front view of the first nut for installing the anchor bolt of the utility model.
[0011] Figure 4 . Front view of the installation and positioning chuck 3 of the utility model.
[0012] Figure 5 . Front view of the anchor bolt welded reinforcing steel bar of the utility model.
[0013] Figure 6 . Front view of the anchor bolt welded with plain round steel bar of the utility model. DETAILED DESCRIPTION
[0014] The utility model is further described in detail below in conjunction with the drawings.
[0015] Figure 1-1 The front view of the positioning chuck of the utility model is shown. The positioning chuck is composed of chucks (1, 2), a fixing frame (3, 4, 10) and a base (5, 6, 7, 8, 9). The chucks (1, 2) are two steel plates with an outer diameter of 80 cm, an inner diameter of 30 cm and a thickness of 0.5 cm, which are processed in the factory according to the size and arrangement form in the anchor bolt pre-embedded design drawing. The fixing frame is composed of a No. 20 channel steel main frame (3, 5, 6, 7, 8, 9), a steel bar connecting rod (4), and a steel bar diagonal brace (10). The fixing frame (3, 4, 10) is welded on both sides of the double chucks (1, 2). The fixing frames on both sides have the same structure. The single-side structure is that two No. 20 channel steels (3) with a length of 80 cm are placed opposite each other with a spacing of 30 cm, and are connected by three steel bars (4) with a length of 30 cm and a diameter of 12 mm. The steel bars (4) are located at both ends and the middle of the channel steel. A 65 cm long steel bar (10) is provided on each side of the single-side fixing frame (3, 4, 10) for support and reinforcement. The base is composed of 9 pieces of No. 20 channel steel, of which 4 pieces (3) are 80 cm long, 3 pieces (5, 6, 7) are 100 cm long, and 2 pieces (8, 9) are 120 cm long. The fixing frame is connected to the double positioning chuck and the base by full welding.
[0016] Figure 1-2 The left side view of the positioning chuck of the utility model. The positioning chuck consists of chucks (1, 2), fixing frames (3, 10) and bases (5, 6, 7). The chucks (1, 2) are two steel plates with an outer diameter of 80 cm, an inner diameter of 30 cm and a thickness of 0.5 cm, which are processed in the factory according to the dimensions and arrangement in the anchor bolt pre-embedded design drawings. The fixing frame is supported by a steel bar diagonal brace (10).
[0017] Figure 1-3The top view of the positioning chuck of the utility model is shown. The positioning chuck is composed of a chuck 1 (1), a chuck 2 (2), a fixing frame (3, 4, 10) and a base (5, 6, 7, 8, 9). The chucks (1, 2) are two steel plates with an outer diameter of 80 cm, an inner diameter of 30 cm and a thickness of 0.5 cm, which are processed in the factory according to the dimensions and layout of the anchor bolt pre-embedded design drawings. The fixing frame is composed of a No. 20 channel steel main frame (3, 5, 6, 7, 8, 9), a steel bar connecting rod (4), and a steel bar diagonal brace (10). The fixing frame (3, 4, 10) is welded on both sides of the double chucks (1, 2). The fixing frames on both sides have the same structure. The single-side structure is that two No. 20 channel steels (3) with a length of 80 cm are placed opposite each other with a spacing of 30 cm, and are connected by three steel bars (4) with a length of 30 cm and a diameter of 12 mm. The steel bars (4) are located at both ends and the middle of the channel steel. A 65 cm long steel bar (10) is provided on each side of the single-side fixing frame (3, 4, 10) for support and reinforcement. The base is composed of 9 pieces of No. 20 channel steel, of which 4 pieces (3) are 80 cm long, 3 pieces (5, 6, 7) are 100 cm long, and 2 pieces (8, 9) are 120 cm long. The fixing frame is connected to the double positioning chuck and the base by full welding.
[0018] Figure 2 This is a front view of the installation of anchor bolts for the positioning chuck of the utility model. Several anchor bolts (3) are installed on the chuck 1 (1) and the chuck 2 (2), and the length of the threaded end of each anchor bolt (3) extending from the chuck 1 (1) is the same.
[0019] Figure 3 This is a front view of the first nut for installing an anchor bolt of the utility model. First, a nut (4) is installed on each anchor bolt. The installation positions of the nuts (4) should be kept the same, and at the same time, the bolt length outside each nut (4) should meet the requirements for installing a chuck and a nut.
[0020] Figure 4 This is a front view of the installation and positioning chuck 3 of the utility model. A chuck 3 (5) identical to chuck 1 and chuck 2 is installed on the outside of the first nut on each anchor bolt, and then a second nut (6) is installed on each anchor bolt outside the chuck 3 (5) to fix the chuck 3 (5).
[0021] Figure 5 The front view of the anchor bolt welded reinforcing steel bar of the utility model. The first circle of reinforcing steel bar (7) with a diameter of 20 mm is welded at 30 to 40 cm from the inner side of the chuck 3, and the second circle of reinforcing steel bar (8) is welded at 60 to 70 cm from the inner side of the chuck 3.
[0022] Figure 6The front view of the anchor bolt welded with round steel bar of the utility model. Unscrew the nut, take out the welded anchor bolt group, and weld a round steel bar (9) with a diameter of 20mm with a hook on each anchor bolt, and ensure that the hook faces inward during welding.
Claims
1. A positioning chuck, characterized in that: Includes a chuck, a fixing frame and a base; The chucks are two steel plates with an outer diameter of 80 cm, an inner diameter of 30 cm, and a thickness of 0.5 cm; The fixing frame is composed of a No. 20 channel steel main frame, steel bar connecting rods and steel bar diagonal braces; The fixing frame is welded on both sides of the chuck, and the single-side structure is two 80 cm long No. 20 channel steels placed opposite each other with a spacing of 30 cm, connected by three 30 cm long steel bars with a diameter of 12 mm, and a 65 cm long steel bar is provided on both sides of the single-side fixing frame for support and reinforcement; The base is composed of 9 pieces of No. 20 channel steel, of which 4 pieces are 80 cm long, 3 pieces are 100 cm long, and 2 pieces are 120 cm long; The fixing frame is connected to the chuck and the base through full welding.
2. The positioning chuck according to claim 1, characterized in that: The chuck is provided with mounting holes for mounting anchor bolts.
3. The positioning chuck according to claim 1, characterized in that: The diameter of the steel bar connecting rod is 12 mm.
4. The positioning chuck according to claim 1, characterized in that: The No. 20 channel steel of the base is connected by full welding to enhance the stability of the overall structure.
5. The positioning chuck according to claim 1, characterized in that: The steel bar diagonal braces are located on both sides of the fixing frame to provide additional support and reinforcement.
6. The positioning chuck according to claim 1, characterized in that: The various components of the chuck, the fixing frame and the base are all made of corrosion-resistant steel to increase the service life of the device.