Chuck for hoisting precast pile based on built-in construction

Abstract

The utility model discloses a prefabricated pile hoisting chuck based on imbedded construction, and relates to the technical field of prefabricated pile hoisting construction, the prefabricated pile hoisting chuck comprises a main hoisting assembly mounted on a pile head and a plurality of auxiliary hoisting assemblies mounted on a pile body, and the main hoisting assembly and the auxiliary hoisting assemblies are connected with hoisting equipment through hoisting belts; the main hoisting assembly comprises two oppositely arranged main semicircular hoops and a main hoisting rope mounted on the two main semicircular hoops; and the auxiliary hoisting assembly comprises two oppositely-arranged auxiliary semicircular hoops and auxiliary hoisting ropes installed on the auxiliary semicircular hoops through the buffering adjusting assembly, and when the buffering adjusting assembly conducts buffering operation, the hoisted precast pile inclines slowly. The chuck can hoist a precast pile which is located on a transport vehicle and is in a horizontal state to a designated position through one-time hoisting operation, the precast pile is slowly adjusted to be in a vertical installation state, operation is easy and convenient, operation safety is good, and construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of precast pile hoisting construction technology, specifically to a chuck for hoisting precast piles based on insertion construction. Background Technology

[0002] In the construction of pile foundations in desert (desert, land reclamation) areas with sandy soil foundations or where penetration resistance is high and precast piles cannot be driven or pressed in, precast pile insertion methods are required. Specifically, the piles are prefabricated in a factory, then hoisted onto transport vehicles, transported to the construction site, and then hoisted near the pile hole. Finally, steel wire ropes and locking devices are installed at the end of the precast pile, which is then lifted to a stable position and inserted into the pile hole to complete the construction. However, unloading and hoisting from the transport vehicle requires two hoisting operations, which is cumbersome. Furthermore, the weight of the precast pile makes it susceptible to damage when hoisting it from a horizontal to a vertical position on site, increasing construction time and costs. Utility Model Content

[0003] The purpose of this utility model is to provide a chuck for hoisting precast piles based on insertion construction. This chuck can hoist a precast pile that is horizontally positioned on a transport vehicle to a designated position in a single hoisting operation, and slowly adjust it to a vertical installation state. It is simple and convenient to operate, has good operational safety, and improves construction efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A chuck for hoisting precast piles based on insertion construction includes a main hoisting assembly installed at the pile head and multiple auxiliary hoisting assemblies installed on the pile body. The main hoisting assembly and the auxiliary hoisting assemblies are connected to hoisting equipment via hoisting belts. The main hoisting assembly includes two opposing main semi-circular clamps and main hoisting ropes installed on the two main semi-circular clamps. The auxiliary hoisting assemblies include two opposing auxiliary semi-circular clamps and auxiliary hoisting ropes installed on the auxiliary semi-circular clamps via a buffer adjustment assembly. When the buffer adjustment assembly performs buffering operations, the hoisted precast pile slowly tilts.

[0006] Preferably, the main lifting rope and the auxiliary lifting rope are connected to the lifting sling.

[0007] Preferably, anti-slip grooves are provided inside both the auxiliary semi-circular clamp and the main semi-circular clamp, and anti-slip components are installed in the anti-slip grooves.

[0008] Preferably, two or three auxiliary hoisting components are installed.

[0009] Preferably, the buffer adjustment assembly includes a base support mounted on the auxiliary semi-circular clamp, a grooved wheel rotatably mounted on the base support via a rotating shaft, a buffer steel wire rope wound on the grooved wheel, a hoisting steel wire rope mounted on the base support, and a damper mounted on the rotating shaft. Lifting rings are detachably mounted at the ends of the buffer steel wire rope and the hoisting steel wire rope, and the auxiliary hoisting rope is mounted on the lifting rings. When the hoisting steel wire rope is separated from the lifting rings, the buffer steel wire rope pulls the grooved wheel to rotate slowly.

[0010] Preferably, the ends of the buffer wire rope and the hoisting wire rope are each connected to the lifting ring by an explosive release bolt.

[0011] In this invention, a main lifting assembly is installed on the pile head of the precast pile, in conjunction with multiple auxiliary lifting assemblies installed on the pile body. This allows for multi-point connection of the precast pile during lifting, preventing damage to the pile body due to its own weight during transport and effectively ensuring construction quality. By sequentially controlling different buffer adjustment components for buffering operations, the posture of the precast pile can be adjusted, allowing it to slowly tilt from a horizontal state to a vertical state. No secondary manual lifting operations are required, making the operation simple and convenient, reducing the number of on-site workers and workload, and improving operational safety and construction efficiency.

[0012] The anti-slip grooves facilitate the installation and replacement of anti-slip components. The anti-slip components improve the stability of the connection with the precast pile and prevent the auxiliary semi-circular clamp and the main semi-circular clamp from directly contacting the precast pile, thus providing a connection buffer and preventing damage during connection due to unevenness of the precast pile surface.

[0013] The hoisting wire rope is used for horizontal hoisting of precast piles. When the attitude of the precast pile needs to be adjusted, the hoisting wire rope is disconnected. The damping braking effect of the damper is used to make the buffer wire rope pull the grooved wheel to rotate slowly, so that the bottom of the precast pile never leaves the ground when it is lifted, thus ensuring the stability and safety of the operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the main semi-circular clamp structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the auxiliary semi-circular clamp structure of this utility model;

[0017] Figure 4 This is a partial structural diagram of the buffer adjustment component of this utility model in its installed state;

[0018] In the diagram: 1. Main hoisting assembly; 2. Auxiliary hoisting assembly; 3. Hoisting sling; 4. Hoisting equipment; 5. Precast pile; 6. Anti-slip groove; 7. Anti-slip component; 8. Buffer adjustment assembly; 9. Explosive release bolt; 10. Main semi-circular clamp; 11. Main hoisting rope; 20. Auxiliary semi-circular clamp; 21. Auxiliary hoisting rope; 80. Foundation support; 81. Rotating shaft; 82. Grooved wheel; 83. Buffer wire rope; 84. Hoisting wire rope; 85. Damper; 86. Lifting ring. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The diagram illustrates a chuck for hoisting precast piles based on insertion-type construction. It includes a main hoisting assembly 1 installed at the pile head and multiple auxiliary hoisting assemblies 2 installed on the pile body. The main hoisting assembly 1 and auxiliary hoisting assemblies 2 are connected to a hoisting device 4 via hoisting straps 3. The hoisting device 4 lifts the precast pile 5, which is fixed by the main hoisting assembly 1 and auxiliary hoisting assemblies 2, as a whole. In this embodiment, two or three auxiliary hoisting assemblies 2 are installed. Of course, for slender precast piles 5, four, five, or even more auxiliary hoisting assemblies 2 can be installed to prevent the precast pile 5 from bending and being damaged during hoisting due to excessive distance between two hoisting points.

[0021] The main hoisting assembly 1 includes two opposing main semi-circular clamps 10 and a main hoisting rope 11 mounted on the two main semi-circular clamps 10. The two main semi-circular clamps 10 are detachably connected to the outer wall of the pile head of the precast pile 5 by bolts. In this embodiment, the top of the precast pile 5 is called the pile head, and the other parts of the precast pile 5 are called the pile body. An anti-slip groove 6 is provided inside the main semi-circular clamp 10, and an anti-slip component 7 is installed in the anti-slip groove 6. The anti-slip groove 6 has a trapezoidal cross-section for easy installation. The anti-slip component 7 is made of rubber material, and one side of the anti-slip component 7 is provided with a boss that matches the anti-slip groove 6. When the anti-slip component 7 is installed on the anti-slip groove 6, the surface of the anti-slip component 7 is in contact with the surface of the main semi-circular clamp 10.

[0022] The auxiliary hoisting assembly 2 includes two opposing auxiliary semi-circular clamps 20 and auxiliary hoisting ropes 21 mounted on the auxiliary semi-circular clamps 20 via a buffer adjustment assembly 8. When the buffer adjustment assembly 8 performs buffering operations, the precast pile 5 being hoisted slowly tilts. Anti-slip grooves 6 are also provided inside the auxiliary semi-circular clamps 20, and anti-slip components 7 are installed within the anti-slip grooves 6. When the anti-slip components 7 are installed on the anti-slip grooves 6, the surface of the anti-slip components 7 is in contact with the surface of the auxiliary semi-circular clamps 20.

[0023] One end of the main lifting rope 11 and the auxiliary lifting rope 21 are both connected to the lifting sling 3. The lifting equipment 4 is hooked onto the lifting sling 3, allowing the precast pile 5 to be lifted as a whole. When the precast pile 5 is inserted into the pile hole, the auxiliary lifting component 2 at the corresponding position is removed. After the construction is completed, the main lifting component 1 is removed.

[0024] The buffer adjustment assembly 8 includes a base support 80 fixedly mounted on an auxiliary semi-circular clamp 20, a grooved wheel 82 rotatably mounted on the base support 80 via a rotating shaft 81, a buffer wire rope 83 wound on the grooved wheel 82, a lifting wire rope 84 mounted on the base support 80, and a damper 85 mounted on the rotating shaft 81. Lifting rings 86 are detachably mounted at the ends of the buffer wire rope 83 and the lifting wire rope 84, and an auxiliary lifting rope 21 is mounted on the lifting ring 86. When the lifting wire rope 84 separates from the lifting ring 86, the buffer wire rope 83 pulls the grooved wheel 82 to rotate slowly. When the buffer wire rope 83 separates from the grooved wheel 82 or from the lifting ring 86, the corresponding auxiliary lifting rope 21 separates from the auxiliary semi-circular clamp 20, and the lifting equipment 4 no longer applies force to that lifting point. During horizontal lifting, the lifting wire rope 84 transmits force; during tilt adjustment, the buffer wire rope 83 transmits force.

[0025] Specifically, the grooved wheel 82 is fixedly mounted on the rotating shaft 81, and the damper 85 is fixedly mounted on the foundation support 80. One end of the rotating shaft 81 is located inside the damper 85. The damper 85 provides frictional resistance to the rotation of the rotating shaft 81, thereby controlling the reduction of the rotational speed of the grooved wheel 82. The damper 85 is existing technology and can be a friction damper or a magnetic powder brake. The corresponding braking torque can be adjusted according to the adaptation of the precast pile 5. Alternatively, brake pads can be arranged to frictionally decelerate the rotating shaft 81.

[0026] In one embodiment, the ends of the buffer wire rope 83 and the hoisting wire rope 84 are respectively connected to the lifting ring 86 via an explosive release bolt 9. When separation is required, detonating the corresponding explosive release bolt 9 can separate the buffer wire rope 83 from the lifting ring 86 or the hoisting wire rope 84 from the lifting ring 86. The explosive release bolt is a readily available product, such as the explosive release bolt disclosed in authorization announcement CN108519028B. The specific structure of the explosive release bolt is not described in detail in this specification.

[0027] In another embodiment, one end of the buffer wire rope 83 is fixed in the grooved wheel 82 by the pressure during winding. When the buffer wire rope 83 is loosened to its longest position, it automatically separates from the grooved wheel 82. Only one explosive release bolt 9 is needed to connect the lifting wire rope 84 and the lifting ring 86, saving costs.

[0028] Of course, to further save costs, the explosive separation bolts 9 can be omitted, and the hoisting wire rope 84 can be separated from the foundation support 80 or the lifting ring 86 by manual operation.

[0029] The above embodiments are merely illustrative of the concept and implementation of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical solutions without substantial changes are still within the scope of protection.

Claims

1. A chuck for hoisting precast piles based on insertion-type construction, characterized in that: The system includes a main lifting assembly installed at the pile head and multiple auxiliary lifting assemblies installed on the pile body. The main lifting assembly and the auxiliary lifting assemblies are connected to the lifting equipment via lifting straps. The main lifting assembly includes two opposing main semi-circular clamps and main lifting ropes installed on the two main semi-circular clamps. The auxiliary lifting assemblies include two opposing auxiliary semi-circular clamps and auxiliary lifting ropes installed on the auxiliary semi-circular clamps via a buffer adjustment assembly. When the buffer adjustment assembly performs buffering operations, the precast pile being lifted slowly tilts.

2. The chuck for hoisting precast piles based on insertion construction as described in claim 1, characterized in that: The main lifting rope and the auxiliary lifting rope are connected to the lifting sling.

3. The chuck for hoisting precast piles based on insertion construction as described in claim 1 or 2, characterized in that: Anti-slip grooves are provided inside both the auxiliary semi-circular clamp and the main semi-circular clamp, and anti-slip components are installed in the anti-slip grooves.

4. The chuck for hoisting precast piles based on insertion construction as described in claim 3, characterized in that: Two or three auxiliary hoisting components are installed.

5. The chuck for hoisting precast piles based on insertion construction as described in claim 1, 2, or 4, characterized in that: The buffer adjustment assembly includes a base support mounted on the auxiliary semi-circular clamp, a grooved wheel rotatably mounted on the base support via a rotating shaft, a buffer steel wire rope wound on the grooved wheel, a hoisting steel wire rope mounted on the base support, and a damper mounted on the rotating shaft. Lifting rings are detachably mounted at the ends of the buffer steel wire rope and the hoisting steel wire rope, and the auxiliary hoisting rope is mounted on the lifting rings. When the hoisting steel wire rope is separated from the lifting rings, the buffer steel wire rope pulls the grooved wheel to rotate slowly.

6. The chuck for hoisting precast piles based on insertion construction as described in claim 5, characterized in that: The ends of the buffer wire rope and the hoisting wire rope are respectively connected to the lifting ring by an explosive release bolt.

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