Pile casing anti-falling device for pile foundation construction

Abstract

The utility model discloses a pile casing anti-falling device for pile foundation construction. The pile casing anti-falling device comprises a square steel plate, a bowl-shaped steel ring, a caliper assembly and steel type ribs. A round opening used for embedding the bowl-shaped steel ring is formed in the middle of the square steel plate, and the bowl-shaped steel ring is connected with the square steel plate in a welded mode. The number of the caliper assemblies is two, each caliper assembly is composed of an anti-skid groove and a gear caliper which are matched with each other, each gear caliper comprises a movable gear, a gear pull rod, a fixing base and a pin shaft, and the anti-skid grooves and the gear calipers are symmetrically fixed to the bowl-shaped steel ring in the radial direction of the bowl-shaped steel ring. Steel type ribs are welded to the diagonal positions of the square steel plate, and one end of each steel type rib is fixedly connected with the bowl-shaped steel ring. And a steel rope hole is reserved in each steel rib.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and in particular relates to a casing anti-falling device used in pile foundation construction. Background Art

[0002] Lowering casing to form a hole and protect the wall is a common method of pile foundation construction in strata prone to collapse. During the construction process, the mechanical disturbance of the rotary drilling rig and the removal of the casing may cause the casing to sink below the ground, thus affecting the construction and even causing quality accidents, construction period and cost losses. At present, there are no effective and simple anti-falling measures on the construction site, and more rely on manual correction by management personnel.

[0003] An existing Chinese patent discloses a casing clamp for pile foundation construction, with the publication number CN 219568871 U. The side wall of the base described in the patent technology is fixedly welded with two support seats arranged in a C shape, the inner side wall of the support seat is fixedly connected with a jack, one end of the jack is installed with a steel top block for resisting the side wall of the casing, the base is provided with a jack through hole corresponding to the jack, the base is provided with a steel top block placement opening corresponding to the steel top block, the jack through hole, the steel top block placement opening and the casing placement hole are connected, the base includes a lower base and an upper base fixed on the top of the lower base, the jack through hole and the steel top block placement opening are arranged on the upper base; the principle is to install a jack on the base The jack has one end that clamps the casing by tightly contacting the steel top block with the side wall of the casing, but the operation of the jack is troublesome, and the steel top block needs to be placed at the two placement ports. The thickness of the steel top block should also be determined in combination with the jack stroke and the width of the gap between the casing and the base. There is a risk of the steel top block falling off, resulting in structural failure, and the operation of the jack is cumbersome, which is not conducive to the frequent compression and separation of the lower section of the casing when the casing is removed. The overall operation is complicated and inefficient. Over time, the casing is unable to be pulled out due to the initial setting of the concrete or causes quality problems with the pile body. In view of this, it is necessary to design an efficient and convenient anti-falling device. In view of the above situation, technical personnel in this field provide a simpler and more efficient casing anti-falling device for pile foundation construction. Summary of the invention

[0004] The purpose of the utility model is to provide a casing anti-falling device for pile foundation construction in order to solve the above-mentioned problem. When mechanical disturbance occurs or the casing is removed, the casing below the ground can be firmly fixed by the device of the utility model to prevent it from suddenly falling and large-scale lateral movement.

[0005] In order to solve the above technical problems and achieve the above technical effects, the utility model is implemented through the following technical contents: a casing anti-falling device for pile foundation construction, comprising a square steel plate, a bowl-shaped steel ring, a caliper assembly and steel ribs;

[0006] A round opening is provided in the middle of the square steel plate for embedding the bowl-shaped steel ring, and the bowl-shaped steel ring and the square steel plate are connected by welding;

[0007] There are two sets of caliper assemblies, each set of caliper assemblies is composed of anti-skid grooves and gear calipers that cooperate with each other. The gear caliper includes a movable gear, a gear pull rod, a fixed seat and a pin shaft. The fixed seat is arranged near the outer edge of the bowl-shaped steel ring. The movable gear is connected to the fixed seat through the pin shaft, and one arc-shaped end of the movable gear passes through the bowl-shaped steel ring. The gear pull rod is fixed to one arc-shaped end of the movable gear. The anti-skid groove and the gear caliper are symmetrically fixed on the bowl-shaped steel ring along the radial direction of the bowl-shaped steel ring.

[0008] The diagonal positions of the square steel plates are welded with steel ribs, one end of which is fixedly connected to the bowl-shaped steel ring; a steel rope hole is reserved on each steel rib.

[0009] Preferably, a connection line between the first set of anti-skid grooves and the gear caliper and a connection line between the second set of anti-skid grooves and the gear caliper are in a cross shape.

[0010] Preferably, the surface of the anti-slip groove is an uneven structure, and the surface of the arc-shaped end of the movable gear is also an uneven structure.

[0011] Preferably, the inner diameter of the top of the bowl-shaped steel ring is greater than the inner diameter of the bottom.

[0012] Preferably, the number of steel rope holes reserved on the steel rib is 1-2.

[0013] Beneficial effects of the utility model:

[0014] 1) Improve safety: During the pile foundation construction process, the installation and removal of the casing is often in a dangerous environment, with the risk of falling. The utility model device can effectively prevent the casing from accidentally falling off, avoid harm to operators and equipment, reduce the occurrence of safety accidents, and improve the safety of construction;

[0015] 2) Improve construction efficiency: The utility model can ensure that the casing can be installed and removed stably and quickly, reducing the time for additional precautions due to safety concerns, thereby speeding up the overall construction progress and improving work efficiency;

[0016] 3) Protect the environment and equipment: Under complex geological conditions, the fall of casing not only threatens the safety of personnel, but also may damage the surrounding environment and construction equipment. The device of the utility model can effectively avoid such situations, reduce damage to the environment and accidental damage to equipment, and reduce the cost of repair and replacement;

[0017] 4) Improve construction quality: The utility model provides a stable casing installation method, avoiding vertical and lateral displacement of the casing, helping to ensure that the verticality and depth of the pile foundation meet the design requirements, thereby improving the overall quality and bearing capacity of the pile foundation; the utility model indirectly promotes the improvement of construction quality by maintaining the stability of the casing. The design and application of the utility model has brought significant positive impacts from multiple dimensions such as safety, efficiency, environmental protection, and quality control, and is an important embodiment of innovation in pile foundation construction technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] In the figure: 1-square steel plate, 2-bowl-shaped steel ring, 3-caliper assembly, 4-steel rib, 31-anti-slip groove, 32-gear caliper, 33-movable gear, 34-gear pull rod, 35-fixed seat, 36-pin shaft, 41-steel rope hole. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are now described with reference to the accompanying drawings. It will be understood by those skilled in the art that the following embodiments are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. If no specific technology, connection relationship or condition is indicated in the embodiments, the technology, connection relationship, condition described in the literature in the field or the product specification is used. If the manufacturer of the materials, instruments or equipment used is not indicated, they are all conventional products that can be purchased.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0023] like Figure 1 As shown, the utility model provides a casing anti-falling device for pile foundation construction, comprising a square steel plate 1, a bowl-shaped steel ring 2, a caliper assembly 3 and a steel rib 4;

[0024] A circular opening is provided in the middle of the square steel plate 1 for embedding the bowl-shaped steel ring 2, and the bowl-shaped steel ring 2 is connected to the square steel plate 1 by welding; the inner diameter of the top of the bowl-shaped steel ring 2 is larger than the inner diameter of the bottom;

[0025] The caliper assembly 3 is provided with two sets, each set of the caliper assembly 3 is composed of an anti-skid groove 31 and a gear caliper 32 that cooperate with each other, the gear caliper 32 includes a movable gear 33, a gear pull rod 34, a fixed seat 35 and a pin 36, the fixed seat 35 is arranged near the outer edge of the bowl-shaped steel ring 2, the movable gear 33 is connected to the fixed seat 35 through the pin 36, and one arc-shaped end of the movable gear 33 passes through the bowl-shaped steel ring 2; the gear pull rod 34 is fixed to one arc-shaped end of the movable gear 33; the anti-skid groove 31 and the gear caliper 32 are symmetrically fixed on the bowl-shaped steel ring 2 along the radial direction of the bowl-shaped steel ring 2; the surface of the anti-skid groove 31 is an uneven structure, and the surface of one arc-shaped end of the movable gear 33 is also an uneven structure;

[0026] The diagonal positions of the square steel plate 1 are welded with steel ribs 4 , one end of which is fixedly connected to the bowl-shaped steel ring 2 ; a steel rope hole 41 is reserved on each steel rib 4 .

[0027] Specifically, the connecting line of the first set of anti-skid grooves 31 and the gear caliper 32 and the connecting line of the second set of anti-skid grooves 31 and the gear caliper 32 are in a cross shape, and the anti-skid grooves 31 or the gear caliper 32 are correspondingly located in the middle of two adjacent steel ribs 4 .

[0028] During the operation of the utility model, the gear pull rod 34 is pressed upward (counterclockwise) to clamp the movable gear 33, the anti-skid groove 31 and the casing to limit the vertical displacement of the casing, and the gear pull rod 34 is pressed downward (clockwise) to separate the movable gear 33, the anti-skid groove 31 and the casing, which is convenient for the installation and removal of the casing; the inner diameter of the top of the bowl-shaped steel ring 2 is larger than the inner diameter of the bottom, which reserves operating space for the movement of the gear caliper; each steel rib 4 is reserved with a steel rope hole 41, which is convenient for the steel rope to fix the casing anti-fall device and lift and move the device by the excavator.

[0029] In order to more clearly describe the content of the utility model, the following description is made in conjunction with specific embodiments:

[0030] (a) During the moving process, the steel rope is passed through the steel rope hole on the steel rib, and the device is lifted and moved by an excavator, which makes the moving operation convenient;

[0031] (b) During pile foundation construction, the rotary drilling machine constructs vertically within the inner circle. After the hole is formed, when the casing is installed, the gear pull rod is pressed upward to press the gear against the casing, and the other side of the casing is pressed against the anti-slip groove to limit the vertical displacement of the casing and prevent the casing from sinking below the ground or moving horizontally to a large extent;

[0032] (c) When the hole is drilled to a certain depth and the casing is continued to be installed, the gear pull rod is slightly pressed down to separate the gear from the casing, making it easier to press the casing down; after the pressing is completed, the gear pull rod is pressed up to continue to fix the casing;

[0033] (d) When pulling up the casing, the gear pull rod is slightly pressed down to separate the gear from the casing, making it easier to pull out the casing;

[0034] (e) When it rises to a certain height, press the gear pull rod upward to press the gear and the casing tightly to prevent the lower casing from sinking during the casing removal process, causing the upper casing to fall in the air and cause an accident;

[0035] (f) After the upper section of the casing is removed, press down the gear pull rod again to separate the gear from the casing, and continue to pull up the casing until all the casing is pulled out.

[0036] The casing anti-fall device provided by the utility model can significantly improve the safety, stability and construction efficiency of casing operations by innovatively integrating a precisely designed gear system with a sturdy pull rod transmission and integrating an anti-skid groove design at key locations. This design ensures the stability of the casing during installation and removal, effectively curbs the risk of sudden vertical falls and large lateral deviations, thereby avoiding problems such as ground collapse, equipment damage or personal injury that may be caused. This comprehensive technical solution not only enhances the ability to adapt to various complex geological conditions during the construction process, but also provides strong support for the depth control and overall quality of the pile foundation. It is a key technical measure to ensure the quality of pile foundation construction and the safety of on-site operations. In addition, the system is easy to install and operate, which further improves the work efficiency of the construction team, ensures that the project can be completed on time and in quality, and lays a solid foundation for the high-quality development of infrastructure construction.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A casing anti-falling device for pile foundation construction, characterized in that: It comprises a square steel plate (1), a bowl-shaped steel ring (2), a caliper assembly (3) and a steel rib (4); wherein: A circular opening is provided in the middle of the square steel plate (1) for inserting the bowl-shaped steel ring (2), and the bowl-shaped steel ring (2) and the square steel plate (1) are connected by welding; The caliper assembly (3) is provided with two sets, each set of the caliper assembly (3) is composed of an anti-skid groove (31) and a gear caliper (32) that cooperate with each other, the gear caliper (32) comprises a movable gear (33), a gear pull rod (34), a fixed seat (35) and a pin shaft (36), the fixed seat (35) is arranged near the outer edge of the bowl-shaped steel ring (2), the movable gear (33) is connected to the fixed seat (35) through the pin shaft (36), and one arc-shaped end of the movable gear (33) passes through the bowl-shaped steel ring (2); the gear pull rod (34) is fixed to one arc-shaped end of the movable gear (33); the anti-skid groove (31) and the gear caliper (32) are fixed to the bowl-shaped steel ring (2) symmetrically along the radial direction of the bowl-shaped steel ring (2); Steel ribs (4) are welded at the diagonal positions of the square steel plate (1), and one end of the steel rib (4) is fixedly connected to the bowl-shaped steel ring (2); a steel rope hole (41) is reserved on each steel rib (4).

2. A casing anti-falling device for pile foundation construction according to claim 1, characterized in that: The connecting line between the first set of anti-skid grooves (31) and the gear caliper (32) and the connecting line between the second set of anti-skid grooves (31) and the gear caliper (32) are in a cross shape.

3. A casing anti-falling device for pile foundation construction according to claim 1 or 2, characterized in that: The surface of the anti-slip groove (31) is an uneven structure, and the surface of one arc-shaped end of the movable gear (33) is also an uneven structure.

4. The casing anti-falling device for pile foundation construction according to claim 1, characterized in that: The inner diameter of the top of the bowl-shaped steel ring (2) is larger than the inner diameter of the bottom.

5. The casing anti-falling device for pile foundation construction according to claim 1, characterized in that: The number of steel rope holes (41) reserved on the steel rib (4) is 1-2.

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