Adjustable cast-in-place pile casing positioning device

Abstract

An adjustable cast-in-place pile casing positioning device belongs to the technical field of cast-in-place pile field casing embedding construction and comprises a positioning bolt, a casing sleeve, a semicircular fixing frame, a fixing rod and a semicircular connecting plate. The at least four positioning bolts are arranged at the upper end of the casing pipe, the two semicircular fixing frames are in butt joint to form a circular ring and are connected with the pipe wall of the casing pipe, and the four fixing rods are welded to the lower end of the circular ring formed by the two semicircular fixing frames in a butt joint mode at equal intervals. According to the utility model, the positioning and embedding precision of the pile casing is improved, the adverse effect caused by eccentric embedding of the pile casing is avoided, the accuracy of the embedding position of the pile casing is ensured, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of on-site casing embedding construction for bored cast-in-place piles, and particularly relates to an adjustable positioning device for cast-in-place pile casings. Background Technique

[0002] The on-site casing embedding construction technology for cast-in-place piles is mainly used to position the pile positions that need to be drilled. The casing embedding method is to apply pressure to bury the casing into the soil layer. The traditional method is to take the center of the pile position as the center of the circle, and determine the position of the casing on the soil according to the radius of the casing. After the casing is in place, it is pressed into the soil layer. In the process of pressing the casing into the soil layer, it is extremely easy to deviate, affecting the accuracy of the pile position. Content of the Utility Model

[0003] In order to improve the accuracy of the casing embedding position and not affect the subsequent construction, the utility model provides an adjustable positioning device for cast-in-place pile casings.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An adjustable positioning device for cast-in-place pile casings includes positioning bolts, casing sleeves, semi-circular fixing frames, fixing rods, and semi-circular connecting plates.

[0006] At least 4 positioning bolts are arranged at the upper end of the casing sleeve. Two semi-circular fixing frames are butted to form a ring and are connected to the pipe wall of the casing sleeve. 4 fixing rods are welded at equal distances at the lower end of the ring formed by butting the two semi-circular fixing frames.

[0007] The semi-circular fixing frame is a rectangular steel plate bent into a semi-circle. Semi-circular connecting plates are welded at both ends of the rectangular steel plate, and the semi-circular connecting plates are provided with connection holes.

[0008] A rubber gasket is arranged inside the semi-circular fixing frame and is fixed to the casing sleeve by bolts; internal threads are arranged at the bottom of the semi-circular fixing frame. The fixing rod is cylindrical, with external threads at the top and a conical tip at the bottom, and the bottom is fixed to the ground through the conical tip.

[0009] The adjustable positioning device for cast-in-place pile casings provided by the utility model has a reasonable structure. By using the system of casing sleeves, positioning bolts, semi-circular fixing frames, and fixing rods in combination with the casing, the casing sleeve is driven into the soil layer, and the depth of the casing sleeve entering the soil layer can be clearly seen according to the markings on the outside of the casing sleeve.

[0010] The utility model improves the accuracy of casing positioning and embedding, avoids the adverse effects caused by eccentric embedding of the casing, ensures the accurate position of the casing embedding, and improves the construction efficiency.

[0011] The casing is a steel protection casing, which is cylindrical and is a conventional device widely used in the construction of bored cast-in-place piles. Brief Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of the present utility model.

[0013] Figure 2 It is a structural diagram of the semi-circular fixing frame in the present utility model.

[0014] In the figure, 1. bolt, 2. casing sleeve, 3. semi-circular fixing frame, 4. fixing rod, 5. semi-circular connecting plate, 6. connecting hole, 7. threaded hole. Detailed Description of the Invention

[0015] The following further describes the detailed implementation manners of the present utility model with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0016] Figure 1 As shown, an adjustable positioning device for a cast-in-place pile casing includes a positioning bolt 1, a casing sleeve 2, a semi-circular fixing frame 3, a fixing rod 4, and a semi-circular connecting plate 5.

[0017] The positioning bolt 1 is arranged at the upper end of the casing sleeve 2. Two semi-circular fixing frames 3 are butted to form a ring and are connected to the pipe wall of the casing sleeve 2. Four fixing rods 4 are equidistantly arranged at the lower end of the ring formed by the butt joint of the two semi-circular fixing frames.

[0018] Figure 2 As shown, the semi-circular fixing frame is a rectangular steel plate with a thickness of at least 15 mm bent into a semi-circle. Semi-circular connecting plates 5 are welded at both ends of the rectangular steel plate. Threaded holes 7 for connecting with the fixing rod 4 are arranged at the bottom of the rectangular steel plate. The semi-circular connecting plate 5 is provided with connecting holes 6. The bolt passes through the connecting hole 6 to connect the semi-circular fixing frame 3 with the pipe wall of the casing sleeve 2 together.

[0019] The top of the fixing rod 4 is provided with an external thread for connecting with the threaded hole 7, and the bottom of the fixing rod 4 is provided with a conical tip.

[0020] The casing sleeve is a cylindrical tube. Scale lines are arranged on the outside of the casing. The positioning bolt is threadedly connected with the casing sleeve. A rubber gasket is arranged on the inner side of the semi-circular fixing frame and is fixed on the casing sleeve by bolts; the fixing rod is cylindrical, and the bottom is fixed to the ground through the conical tip.

[0021] The using method of the present utility model:

[0022] 1. Pile positioning: According to the pile layout plan, loft the pile, and after checking and being correct, carry out the construction of the next process.

[0023] 2. Bushing casing embedding: Determine the position of the bushing casing according to the position of the cast-in-place pile, and vertically press the bushing casing into the soil layer. During the process of pressing into the soil layer, ensure that the bushing casing is in a vertical state.

[0024] 3. Bushing casing positioning: Adjust the positioning bolts on the bushing casing in cooperation with a measuring tape to determine the position of the bushing casing. After verification, carry out the embedding of the bushing casing.

[0025] 4. Bushing casing embedding: The bushing casing passes through the positioning bolts at the upper part of the bushing casing and is buried in the soil layer. The embedding depth of the bushing casing should be determined according to the design requirements and geological report. Generally speaking, in sandy soil, the embedding depth should not be less than 1 m; in clay, it should not be less than 0.5 m. After the bushing casing is embedded, it should be fixed to prevent it from shifting or sinking. Generally, it is fixed by concrete pouring, or sand and gravel and other materials can be filled around the bushing for fixation.

[0026] 5. Verticality inspection: The verticality of the bushing casing should be controlled within 1% to avoid affecting the construction quality of the pouring.

[0027] 6. Sealing performance: The sealing performance of the bushing casing should be ensured during embedding to prevent slurry leakage. A layer of sealing material, such as rubber or plastic, can be laid at the bottom of the bushing.

[0028] The above-described embodiments are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereto. Any simple changes or equivalent replacements of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope disclosed by the present utility model all belong to the protection scope of the present utility model.

Claims

1. An adjustable positioning device for cast-in-place pile casing, characterized in that It includes positioning bolts, casing pipes, semi-circular fixing frames, fixing rods, and semi-circular connecting plates; at least 4 positioning bolts are arranged at the upper end of the casing pipes. Two semi-circular fixing frames are butted to form a ring and are connected to the pipe wall of the casing pipes. 4 fixing rods are welded at equal distances to the lower end of the ring formed by butting the two semi-circular fixing frames.

2. The adjustable positioning device for cast-in-place pile casing according to claim 1, characterized in that The semi-circular fixing frame is a rectangular steel plate bent into a semi-circle. Semi-circular connecting plates are welded to both ends of the rectangular steel plate, and the semi-circular connecting plates are provided with connection holes.

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