Cast-in-situ bored pile top elevation control device

Abstract

The invention relates to a cast-in-situ bored pile top elevation control device which comprises a control rod, a chassis, a guide pipe, a limiting assembly and a clamping assembly. The lower end of the control rod is connected with the base plate, the control rod is sleeved with the guide pipe in a sliding mode, the guide pipe is connected with the clamping assembly, and the clamping assembly is connected with the side wall of a steel casing. The limiting assembly is connected to the control rod and used for limiting the guide pipe. The limiting assembly comprises a positioning ring and an adjusting screw rod; the control rod is sleeved with the positioning ring, and the adjusting screw penetrates through the positioning ring to be connected with the side wall of the control rod. The clamping assembly comprises a fixing clamp and a fastening screw rod; one end of the fixing clamp is connected with the guide pipe, and the fastening screw is arranged on the side wall of the other end of the fixing clamp. According to the pile top elevation control device for the cast-in-situ bored pile, the existing defects are overcome, the pile foundation pile forming quality is guaranteed, and material waste is reduced.

Description

Technical Field

[0001] The invention relates to a bored cast-in-place pile top elevation control device. Background Art

[0002] At present, after decades of rapid development, the national economy has encountered many development bottlenecks. Quality management has reached a critical period where management level and capacity must be improved. Getting rid of the traditional extensive development management model and developing in the direction of modernization and refined management is the general trend of enterprise quality management. As the most commonly used infrastructure, the construction quality and refined management of bored piles are constantly improving. During the construction of bored piles, the over-filling height of the bored piles is generally controlled between 0.8 and 1m to ensure the quality of the pile body after the pile head is broken.

[0003] In order to effectively control the pile top elevation during the pouring process, the current method of measuring rope inspection is usually used for control. The inspection error is large and requires high responsibility, experience and ability of the inspectors. If the inspection is not timely, the over-injection volume is large, resulting in great waste of concrete and difficulty in breaking the pile head in the later stage; if the inspection error is large, the over-injection volume is insufficient or the pouring is not in place, resulting in unqualified pile quality or more serious quality problems.

[0004] Therefore, a bored cast-in-place pile top elevation control device is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the existing defects and provide a bored cast-in-place pile top elevation control device to ensure the quality of pile foundation and reduce material waste.

[0006] The technical solution to achieve the above object is: a bored pile top elevation control device, comprising a control rod, a chassis, a guide tube, a limit assembly and a clamping assembly;

[0007] The lower end of the control rod is connected to the chassis, the guide tube is slidably mounted on the control rod, the guide tube is connected to the clamping assembly, and the clamping assembly is connected to the side wall of the steel casing; the limiting assembly is connected to the control rod and is used to limit the guide tube.

[0008] Preferably, the limiting assembly includes a positioning ring and an adjusting screw; the positioning ring is sleeved on the control rod, and the adjusting screw passes through the positioning ring and is connected to the side wall of the control rod.

[0009] Preferably, the clamping assembly includes a fixing clamp and a fastening screw; one end of the fixing clamp is connected to the guide tube, and the fastening screw is arranged on the side wall of the other end.

[0010] Preferably, the lower end of the control rod is connected to the chassis by welding.

[0011] Preferably, the fixing clamp is connected to the guide tube by welding.

[0012] Preferably, the chassis is a steel chassis.

[0013] Preferably, a first screw hole is formed on the positioning ring, and the adjusting screw passes through the first screw hole to connect to the side wall of the control rod.

[0014] Preferably, the fixing clamp comprises an F-shaped rod and a shift rod; the shift rod is connected to the inner side of the F-shaped rod to form a gap; a second screw hole is provided on the F-shaped rod, and the fastening screw passes through the second screw hole into the gap.

[0015] Preferably, the control rod is a round steel with a diameter of 16MM.

[0016] Preferably, the positioning ring and the guide tube are steel pipes with a diameter of 18MM.

[0017] The beneficial effects of the present invention are as follows: the bored pile top elevation control device is simple to manufacture, low in cost, easy to operate, and has high precision. It solves the shortcomings of traditional pile top elevation detection, improves the quality of bored piles, ensures the quality of pile foundation, reduces material waste, reduces resource waste, and brings certain economic benefits to the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the application of the bored cast-in-place pile top elevation control device of the present invention;

[0019] Figure 2 It is a schematic diagram of a bored cast-in-place pile top elevation control device of the present invention;

[0020] Figure 3 is a detailed view of the control lever of the present invention;

[0021] Figure 4 is a detailed view of the positioning ring of the present invention;

[0022] Figure 5 It is a detailed view of the guide tube of the present invention.

[0023] In the figure: 1. control rod; 2. chassis; 3. guide tube; 4. positioning ring; 5. adjusting screw; 6. fixing clamp; 61. F-type rod; 62. gear lever; 7. fastening screw. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-5 As shown, a bored pile top elevation control device includes a control rod 1, a chassis 2, a guide tube 3, a limit assembly and a clamping assembly; the lower end of the control rod 1 is connected to the chassis 2, and the lower end of the control rod 1 is connected to the chassis 2 by welding. The chassis 2 is a steel chassis. The guide tube 3 is slidably sleeved on the control rod 1, and the guide tube 3 is connected to the clamping assembly, and the clamping assembly is connected to the side wall of the steel casing; the limit assembly is connected to the control rod 1, and is used to limit the guide tube 3. The control rod 1 is welded together with a φ16 round steel and a 180mm diameter steel chassis 2. The length of the control rod 1 is cut according to the actual required length. The weight of the steel chassis 2 is slightly greater than the buoyancy of the mud, eliminating misjudgment caused by the rise of the mud.

[0027] Specifically, the limit assembly includes a positioning ring 4 and an adjusting screw 5; the positioning ring 4 is sleeved on the control rod 1, and the adjusting screw 5 passes through the positioning ring 4 to connect to the side wall of the control rod 1. The positioning ring 4 is provided with a first screw hole, and the adjusting screw 5 passes through the first screw hole to connect to the side wall of the control rod 1. The positioning ring 4 can slide on the control rod 1, and the adjusting screw 5 can fix the position of the positioning ring 4 on the control rod 1. The positioning ring 4 is made of a φ18 steel pipe, which is fixed to the control rod 1 through the adjusting screw 5, and is firmly fixed to prevent positioning sliding from causing measurement accuracy.

[0028] Specifically, the clamping assembly includes a fixing clamp 6 and a fastening screw 7; one end of the fixing clamp 6 is connected to the guide tube 3, and the fastening screw 7 is arranged on the side wall of the other end. The fixing clamp 6 is connected to the guide tube 3 by welding. The fixing clamp 6 includes an F-shaped rod 61 and a stop rod 62; the stop rod 62 is connected to the inner side of the F-shaped rod 61 to form a slit; a second screw hole is provided on the F-shaped rod 61, and the fastening screw 7 passes through the second screw hole to the slit. The slit is clamped on the side wall of the steel casing and connected to the side wall of the steel casing by the fastening screw 7.

[0029] Specifically, the control rod 1 is a round steel with a diameter of 16 MM, and the positioning ring 4 and the guide tube 3 are steel tubes with a diameter of 18 MM.

[0030] Specifically, the guide tube 3 is welded together with a φ18 steel pipe and a steel fixing clamp 6. The fixing clamp 6 is hung on the steel casing and then tightened with a fixing screw 7. The extending length of the fixing clamp 6 should be considered during production and installation to prevent the vibration of the conduit during the pouring process from damaging the control device.

[0031] Specifically, when in use, measure the elevation of the top of the steel casing, calculate the lowering length of the control rod 1, that is, the length from the bottom of the chassis 2 to the positioning height, according to the designed elevation of the pile top + the over-pouring height, first put the guide tube 3, then put the positioning ring 4 on the control rod, and then use the adjusting screw 5 to fix the position of the positioning ring 4 according to the length below. Lower the chassis 2 and the control rod 1 into the steel casing, hang the fixing clamp 6 on the wall of the steel casing, and tighten the fastening screw 7. Pour the pile concrete. When the control rod 1 begins to rise, it means that the concrete has been poured to the pre-controlled elevation, and stop pouring immediately. Touch the control rod 1 downward. When the control rod 1 encounters obvious resistance when descending, it is the concrete pouring height of the pile top.

[0032] The bored pile top elevation control device is simple to manufacture, low in cost, easy to operate and has high precision. It solves the shortcomings of traditional pile top elevation detection, improves the quality of bored piles, ensures the quality of pile foundation, reduces material waste, reduces resource waste, and brings certain economic benefits to the project.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bored pile top elevation control device, characterized in that: It comprises a control rod (1), a chassis (2), a guide tube (3), a limit assembly and a clamping assembly; The lower end of the control rod (1) is connected to the chassis (2), the guide tube (3) is slidably mounted on the control rod (1), the guide tube (3) is connected to the clamping assembly, and the clamping assembly is connected to the side wall of the steel casing; the limiting assembly is connected to the control rod (1) and is used to limit the guide tube (3).

2. The bored pile top elevation control device according to claim 1, characterized in that: The limiting assembly comprises a positioning ring (4) and an adjusting screw (5); the positioning ring (4) is sleeved on the control rod (1), and the adjusting screw (5) passes through the positioning ring (4) and is connected to the side wall of the control rod (1).

3. The bored pile top elevation control device according to claim 1, characterized in that: The clamping assembly comprises a fixing clamp (6) and a tightening screw (7); one end of the fixing clamp (6) is connected to the guide tube (3), and the tightening screw (7) is arranged on the side wall of the other end.

4. The bored pile top elevation control device according to claim 1, characterized in that: The lower end of the control rod (1) is connected to the chassis (2) by welding.

5. The bored pile top elevation control device according to claim 3, characterized in that: The fixing clamp (6) is connected to the guide tube (3) by welding.

6. The bored pile top elevation control device according to claim 1, characterized in that: The chassis (2) is a steel chassis.

7. The bored pile top elevation control device according to claim 2, characterized in that: The positioning ring (4) is provided with a first screw hole, and the adjusting screw rod (5) passes through the first screw hole to connect to the side wall of the control rod (1).

8. The bored pile top elevation control device according to claim 3, characterized in that: The fixing clamp (6) comprises an F-shaped rod (61) and a shift rod (62); the shift rod (62) is connected to the inner side of the F-shaped rod (61) to form a clamping gap; a second screw hole is provided on the F-shaped rod (61), and the fastening screw (7) passes through the second screw hole to the inside of the clamping gap.

9. The bored pile top elevation control device according to claim 1, characterized in that: The control rod (1) is a round steel bar with a diameter of 16MM.

10. The bored pile top elevation control device according to claim 2, characterized in that: The positioning ring (4) and the guide tube (3) are steel tubes with a diameter of 18 MM.

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