A pile pulling device for removing a surrounding purlin

Abstract

This utility model discloses a pile-pulling device for waler removal, relating to the field of building construction technology. It includes a base frame, a pile-pulling linkage, a hydraulic mechanism, and a waler-pulling clamp. The pile-pulling linkage is slidably located on one side of the middle of the base frame, and one side of the linkage is fixedly connected to the bottom of the hydraulic mechanism. The waler-pulling clamp is movably connected to the bottom of the hydraulic mechanism. In operation, the waler-pulling device uses the waler-pulling clamp to hold the waler in place. Simultaneously, two sets of clamping inner blocks extend and retract on one side via a push rod and a hydraulic cylinder. When the waler detaches from one side of the clamping inner blocks, the clamping inner blocks of the same set are pushed by the liquid on one side to clamp the bottom of the waler. An anti-slip groove is provided on the side not clamped to increase friction between the clamping inner blocks and the waler surface, greatly reducing the possibility of the waler detaching during removal.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a pile-pulling device for waler demolition. Background Technology

[0002] Walers are important components of support structures in civil engineering. Their main function is to fix the support structures, such as retaining piles and sheet piles, and to transfer the load borne by the piles to the supporting components, forming a stable support system. Like a "beam," it connects the dispersed support piles, preventing pile displacement and deformation, ensuring the stability of the foundation pit or slope during excavation, avoiding the risk of collapse, and guaranteeing construction safety. They are commonly found in engineering scenarios such as foundation pit support and tunnel excavation.

[0003] The existing Chinese utility model patent with publication number CN209053103U discloses a steel sheet pile waler connection structure that facilitates assembly and disassembly. This structure connects the steel sheet pile and the waler through multiple connecting structures, including: a first slot consisting of a pair of L-shaped plates fixed to the steel sheet pile at intervals, with the interval between the L-shaped plates forming a first opening; a second slot consisting of a pair of L-shaped plates fixed to the waler at intervals, with the interval between the L-shaped plates forming a second opening; a tenon consisting of a first plate, a second plate, and a connecting plate, with the first and second plates arranged parallel to each other and connected by the connecting plate in an H-shape; and a small bracket located on the lower part of the outer side of the second plate to support the waler. This utility model features quick and easy construction, high material turnover, and has high promotional value.

[0004] Currently, the pile extraction equipment used for waler removal still has the following problems:

[0005] When removing walers, equipment is needed to hold them securely so that they can be pulled out of the ground. However, due to rust, dust, or other reasons on the surface of the walers, the clamping device may come loose during the removal process, causing the walers to be unable to be firmly fixed and requiring repeated fixing before they can be pulled out. Utility Model Content

[0006] The purpose of this utility model is to provide a pile-pulling device for waler removal, so as to solve the problem of waler anti-detachment hook fixation mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] This utility model provides a pile-pulling device for waler removal, including a base frame, a pile-pulling linkage, a hydraulic mechanism, and a waler removal clamp. The pile-pulling linkage is slidably located on one side of the middle of the base frame, and one side of the pile-pulling linkage is fixedly connected to the bottom of the hydraulic mechanism. The waler removal clamp is movably connected to the bottom of the hydraulic mechanism. A connecting ring with gear teeth is fixedly installed on one side of the surface of the pile-pulling linkage. Side grooves are opened on both sides of the pile-pulling linkage, and steel wire ropes to prevent the device from falling off are installed inside the side grooves. A top rod is installed at the bottom of one end of the pile-pulling linkage.

[0009] The waler removal clamp includes clamping inner blocks installed at equal intervals on one side of the interior, and a set of hydraulic cylinders is provided for every two sets of clamping inner blocks. The hydraulic cylinders are located on one side of the clamping inner blocks and are movably connected to the clamping inner blocks through push rod two.

[0010] Preferably, the steel wire rope is fitted with a collar, and the collar is located inside the side groove, and the top rod is located between multiple sets of side grooves.

[0011] Preferably, the second push rod is movably connected to one side of the clamping inner block, and the second push rod and the hydraulic cylinder are interconnected.

[0012] Preferably, a bottom plate extends from one side of the base frame body and is fixed by screws. A sliding frame is provided in the middle of the base frame body. One end of the pile extraction linkage is located inside the sliding frame, and the top of one end of the pile extraction linkage is movably connected to a push rod located inside the sliding frame.

[0013] Preferably, the hydraulic mechanism includes a clamping frame mounted at the bottom, and gears are symmetrically mounted on the upper part of the clamping frame. A piston rod connected to the bottom of the hydraulic mechanism is provided in the middle of the gears. A movable ring is mounted on the lower middle part of the piston rod, and gear plates are provided on both sides inside the movable ring. The bottom end of the piston rod is fixedly connected to the protective base plate.

[0014] Preferably, the gears are movably connected by a movable frame, and the bottom end of the movable frame is fixedly connected to the waler removal clamp. A connecting rod is installed in the middle of the movable frame, and the connecting rod is connected to the movable ring through a connecting frame movably connected on one side.

[0015] Preferably, the top of the push rod is connected to the hydraulic device, and the wire rope is located on both sides inside the sliding frame.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0017] 1. When the pile extraction equipment for waler removal is in operation, the waler extraction clamps fix and hold the waler. At the same time, the two sets of clamping inner blocks move and extend on one side through push rod two and hydraulic cylinder. When the waler falls off from one side of the clamping inner block, the clamping inner block of the same group is pushed by the liquid on one side to clamp the bottom of the waler. The side that is not clamped is provided with anti-slip grooves to increase the friction between the clamping inner block and the surface of the waler, which can greatly reduce the possibility of the waler falling off during the extraction process.

[0018] 2. When the pile extraction equipment is used for waler removal, the pile extraction linkage is connected to the connecting ring and the push rod to facilitate the upward and downward sliding of the equipment. At the same time, the steel wire rope and the top rod can prevent the pile extraction linkage from slipping during the removal of the equipment, avoiding the impact caused by the equipment slipping and reducing the risk of falling from a height. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the lower structure of the hydraulic mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the waler removal clamp structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the pile-pulling linkage structure of this utility model;

[0025] In the picture:

[0026] 1. Main frame; 2. Bottom plate; 3. Sliding frame; 4. Push rod one; 5. Pile extraction linkage; 51. Connecting ring; 52. Top rod; 53. Side groove; 54. Collar; 55. Steel wire rope; 6. Hydraulic mechanism; 61. Piston rod; 62. Clamping frame; 63. Gear; 64. Movable frame; 65. Movable ring; 66. Connecting rod; 67. Connecting frame; 68. Protective bottom plate; 7. Waler removal clamp; 71. Clamping inner block; 72. Push rod two; 73. Hydraulic cylinder. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] Please see Figures 1-4 A pile-pulling device for waler removal includes a base frame body 1, a pile-pulling linkage 5, a hydraulic mechanism 6, and a waler removal clamp 7. A bottom plate 2 extends from one side of the bottom of the base frame body 1 and is fixed by screws. A sliding frame body 3 is provided in the middle of the base frame body 1. One end of the pile-pulling linkage 5 is located inside the sliding frame body 3, and the top of one end of the pile-pulling linkage 5 is movably connected to a push rod 4 located inside the sliding frame body 3.

[0029] For details, please refer to the following: Figure 4 As shown, the pile pulling linkage 5 is slidably located on the middle side of the base frame body 1. A connecting ring 51 with wheel teeth is fixedly installed on one side of the surface of the pile pulling linkage 5. Side grooves 53 are opened on both sides of the pile pulling linkage 5. Steel wire ropes 55 to prevent the equipment from falling off are installed inside the side grooves 53. A top rod 52 is installed at the bottom of one end of the pile pulling linkage 5.

[0030] In this embodiment, a collar 54 is sleeved on the outside of the wire rope 55, and the collar 54 is located inside the side groove 53. The top rod 52 is located between multiple sets of side grooves 53. The top of the push rod 4 is connected to the hydraulic device, and the wire rope 55 is located on both sides inside the sliding frame 3.

[0031] The present invention relates to a pile-pulling device for waler removal. The pile-pulling linkage 5 slides inside the sliding frame 3 via a push rod 4, facilitating the positioning of one end of the linkage 5 at the location where the waler needs to be clamped. The pile-pulling linkage 5 is supported on one side by a bottom top rod 52, preventing it from falling rapidly inside the sliding frame 3 and protecting its bottom. At the same time, a steel wire rope 55 protects one side of the pile-pulling linkage 5 to prevent it from falling rapidly, increasing the safety of the waler during removal and reducing the possibility of falling from a height.

[0032] For details, please refer to the following: Figure 2 As shown, one side of the pile pulling linkage 5 is fixedly connected to the bottom of the hydraulic mechanism 6. The hydraulic mechanism 6 includes a clamping frame 62 installed at the bottom, and gears 63 are symmetrically installed on the upper part of the clamping frame 62. A piston rod 61 connected to the bottom of the hydraulic mechanism 6 is provided in the middle of the gears 63. A movable ring 65 is installed in the lower middle of the piston rod 61, and gear plates are provided on both sides inside the movable ring 65. The bottom end of the piston rod 61 is fixedly connected to the protective base plate 68.

[0033] In this embodiment, a movable frame 64 is movably connected between the gears 63, and the bottom end of the movable frame 64 is fixedly connected to the waler removal clamp 7. A connecting rod 66 is installed in the middle of the movable frame 64, and the connecting rod 66 is connected to the movable ring 65 through a connecting frame 67 movably connected on one side.

[0034] The waler removal device of this utility model uses a hydraulic mechanism 6 to drive the piston rod 61 to rise and fall, causing the gears 63 on both sides of the piston rod 61 and the wheel discs on both sides inside the movable ring 65 to rotate. The rotation of the gears 63 causes the movable frame 64 to drive the waler removal clamp 7 to clamp the waler at a designated place, making it easy to pull the waler out of the soil. The protective base plate 68 set at the bottom of the piston rod 61 can prevent the gears 63 from slipping and provide anti-derailment protection for the movable frame 64.

[0035] For details, please refer to the following: Figure 3 As shown, a waler removal clamp 7 is movably connected to the lower part of the hydraulic mechanism 6. The waler removal clamp 7 includes clamping inner blocks 71 installed at equal intervals on one side of the interior. A set of hydraulic cylinders 73 is provided for every two sets of clamping inner blocks 71. The hydraulic cylinders 73 are located on one side of the clamping inner blocks 71 and are movably connected to the clamping inner blocks 71 through push rod 2 72.

[0036] In this embodiment, push rod 72 is movably connected to one side of the clamping inner block 71, and push rod 72 and hydraulic cylinder 73 are interconnected.

[0037] The present invention relates to a pile-pulling device for waler removal. The clamping inner blocks 71 are arranged in pairs. The clamping inner blocks 71 at both ends retract backward under the pressure of the waler, while the clamping inner block 71 in the middle pops out. The two clamping inner blocks 71 in the middle assist the waler removal clamp 7 in fixing the waler to the outside. If the waler falls off during the removal process, the clamping inner block 71 in the middle retracts on one side under force, pushing the clamping inner blocks 71 at both ends outward. The clamping inner blocks 71 continue to clamp the waler using the anti-slip surface of their surfaces, which can reduce the probability of the waler falling off during the removal process.

[0038] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A pile-pulling device for waler removal, comprising a base frame (1), a pile-pulling linkage (5), a hydraulic mechanism (6), and a waler removal clamp (7), characterized in that: The pile pulling linkage (5) is slidably located on the middle side of the base frame body (1), and one side of the pile pulling linkage (5) is fixedly connected to the bottom of the hydraulic mechanism (6). A waler removal clamp (7) is movably connected below the hydraulic mechanism (6). A connecting ring (51) with wheel teeth is fixedly installed on one side of the surface of the pile pulling linkage (5). Side grooves (53) are opened on both sides of the pile pulling linkage (5). A steel wire rope (55) to prevent the equipment from falling off is installed inside the side grooves (53). A top rod (52) is installed at the bottom of one end of the pile pulling linkage (5). The waler removal clamp (7) includes clamping inner blocks (71) installed at equal intervals on one side of the interior, and each pair of clamping inner blocks (71) is provided with a set of hydraulic cylinders (73). The hydraulic cylinders (73) are located on one side of the clamping inner blocks (71), and the hydraulic cylinders (73) are movably connected to the clamping inner blocks (71) through push rod two (72).

2. The pile-pulling device for waler removal according to claim 1, characterized in that: The steel wire rope (55) is fitted with a collar (54) on the outside, and the collar (54) is located inside the side groove (53). The top rod (52) is located between multiple sets of side grooves (53).

3. The pile-pulling device for waler removal according to claim 1, characterized in that: The push rod 2 (72) is movably connected to one side of the clamping inner block (71), and the push rod 2 (72) and the hydraulic cylinder (73) are interconnected.

4. The pile-pulling device for waler removal according to claim 2, characterized in that: The base frame body (1) has a bottom plate (2) extending from one side of its bottom, and the bottom plate (2) is fixed by screws. A sliding frame (3) is provided in the middle of the base frame body (1). One end of the pile pulling linkage (5) is located inside the sliding frame (3), and the top of one end of the pile pulling linkage (5) is movably connected to the push rod (4) located inside the sliding frame (3).

5. The pile-pulling device for waler removal according to claim 1, characterized in that: The hydraulic mechanism (6) includes a clamping frame (62) installed at the bottom, and gears (63) are symmetrically installed on the upper part of the clamping frame (62). A piston rod (61) connected to the bottom of the hydraulic mechanism (6) is provided in the middle of the gear (63). A movable ring (65) is installed in the middle and lower part of the piston rod (61). Gear plates are provided on both sides of the inside of the movable ring (65). The bottom end of the piston rod (61) is fixedly connected to the protective base plate (68).

6. The pile extraction device for waler removal according to claim 5, characterized in that: A movable frame (64) is movably connected between the gears (63), and the bottom end of the movable frame (64) is fixedly connected to the waler removal clamp (7). A connecting rod (66) is installed in the middle of the movable frame (64), and the connecting rod (66) is connected to the movable ring (65) through a connecting frame (67) movably connected on one side.

7. The pile-pulling device for waler removal according to claim 4, characterized in that: The top of the push rod (4) is connected to the hydraulic device, and the wire rope (55) is located on both sides inside the sliding frame (3).

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