Quick fixing device for static pressure pile and construction method

Abstract

The rapid fixing device of the static pressure pile is installed at an inlet of a pile gripper of a static pressure pile machine and comprises a rail, a tray trolley, a driving assembly and an anti-collision fence, the rail is laid at the inlet of the pile gripper, the tray trolley is arranged on the rail, the anti-collision fence is fixedly arranged on the tray trolley, and the driving assembly is arranged on the anti-collision fence. The driving assembly is in transmission connection with the tray trolley and used for driving the tray trolley to reciprocate along the track so as to feed or move the static pressure pile into or out of the pile gripper. Compared with the prior art, the short-distance precise conveying of the static pressure pile body is achieved through the rapid fixing device, the extreme requirements for the hoisting height and precision of a crane are reduced, the use frequency and the lease cost of large auxiliary hoisting equipment are reduced, and meanwhile the labor cost is also saved. Due to the arrangement of the anti-collision fence, direct collision between the pile body and the balancing weight is avoided; friction-free movement of the pile body is achieved through rail trolley type conveying, the integrity of the pile body is effectively protected, and the pile forming quality is ensured.

Description

Technical Field

[0001] This invention relates to the field of pile foundation construction technology, and in particular to a rapid fixing device and construction method for static pressure piles. Background Technology

[0002] Static pressure pile driving is a commonly used precast pile driving technique in soft soil foundation treatment. Currently, during construction, the static pressure pile driver's own crane is typically used to lift the piles to the inlet of the driver's pile gripper before subsequent pile driving. However, this traditional method has the following significant drawbacks: Limited hoisting height: The boom length and height of the pile driver's own crane are limited. When the static pressure pile is long, it is difficult to lift the pile to the height required by the pile gripper. It is often necessary to call on a large crawler crane to assist, which increases equipment costs and coordination difficulties.

[0003] Poor positioning accuracy and susceptibility to collisions: The entry point of the pile gripper is usually located between the counterweights of the pile driver, in a narrow space that creates a blind spot. Crane operators find it difficult to accurately position the pile during operation, which can easily lead to collisions between the statically pressed pile and the counterweights on both sides. This can damage the pile itself (especially the ends of prestressed concrete pipe piles) and affect the stability of the counterweights, posing a safety hazard.

[0004] The pile transportation method is crude: after the static pressure pile is hoisted to the entrance channel, it is usually slid into the center of the pile gripper by dragging with a hook or manually prying. This process generates severe friction, seriously scratches the pile surface, affects the pile quality and durability, and is inefficient.

[0005] Therefore, there is an urgent need for a device and method that can achieve safe, accurate, efficient, and non-destructive transport and fixing of static pressure piles. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a rapid fixing device and construction method for static pressure piles, which can reduce reliance on large auxiliary hoisting equipment, eliminate the risk of collisions during hoisting, avoid friction damage during pile transportation, improve construction efficiency and safety, and ultimately ensure the quality of pile foundation construction.

[0007] To achieve this technical objective, the present invention adopts the following solution: In a first aspect, the present invention provides a rapid fixing device for static pressure piles, which is installed at the inlet of the pile gripper of a static pressure pile driver. The device includes a track, a pallet trolley, a drive assembly, and a crash barrier. The track is laid to the inlet of the pile gripper, the pallet trolley is set on the track, and the crash barrier is fixedly installed on the pallet trolley. The drive assembly is connected to the pallet trolley for driving the pallet trolley to move back and forth along the track to send the static pressure pile into or out of the pile gripper.

[0008] Furthermore, the crash barrier is a frame structure made of welded steel profiles, with a buffer liner on its inner side.

[0009] Furthermore, the track consists of two parallel channel steels, and the bottom of the pallet trolley is equipped with wheels that cooperate with the channel steels.

[0010] Furthermore, the drive component is a hydraulic cylinder, with the cylinder body fixed to the end of the track away from the pile gripper, and the end of the piston rod hinged to the pallet trolley.

[0011] Secondly, the present invention provides a static pressure pile construction method using the aforementioned static pressure pile rapid fixing device, comprising the following steps: S1. Move the static pressure pile driver into position and install a quick-fixing device in front of its pile gripper inlet; S2. Hoist the static pressure pile and vertically place it inside the crash barrier, then lower it onto the pallet trolley; S3. Start the drive assembly to push the pallet trolley to move along the track and smoothly deliver the static pile to the clamping position of the pile gripper. S4. After the control pile gripper clamps the static pile, the drive component pulls the pallet trolley back to the initial position. S5. Perform static pressure pile driving operation; S6. Repeat steps S2 to S5 until all construction is completed.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The rapid fixing device of this invention enables short-distance, precise transport of static pressure piles, reducing the extreme requirements for crane lifting height and precision, decreasing the frequency of use and rental costs of large auxiliary lifting equipment, and saving labor costs. The anti-collision fence prevents direct collisions between the pile and the counterweight; the track-trolley transport achieves frictionless movement of the pile, effectively protecting its integrity and ensuring pile quality. This invention's construction method reduces driver difficulty and visual stress, streamlines the construction process, significantly improves single-pile construction efficiency, and shortens the overall construction period. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the rapid fixing device for static pressure piles in an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of a static pressure pile being transported using a rapid fixing device in an embodiment of the present invention.

[0015] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0016] The markings in the diagram are: 1. Track; 2. Pallet trolley; 3. Drive assembly; 4. Crash barrier; 5. Buffer liner; 6. Static pressure pile. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0018] Please see Figures 1 to 3 The present invention provides a rapid fixing device for static pressure piles, which is installed at the pile gripper inlet of a static pressure pile driver, including a track 1, a pallet trolley 2, a drive assembly 3, and a crash barrier 4.

[0019] Track 1 consists of two parallel channel steel sections laid to the inlet of the pile driver. A pallet trolley 2 is mounted on track 1, and its bottom is equipped with wheels that mate with the channel steel sections. A crash barrier 4 is fixedly installed on the pallet trolley 2. The crash barrier 4 is a frame structure made of welded steel sections, used to receive and restrain the static pressure piles 6 in a vertically suspended state, preventing them from laterally swinging and colliding with surrounding components. A buffer liner 5 is provided on the inner side of the crash barrier 4; the buffer liner 5 can be made of rubber or polyurethane.

[0020] The drive assembly 3 is connected to the pallet trolley 2 via a transmission, and is used to drive the pallet trolley 2 to reciprocate along the track 1 to deliver or remove the static pile 6 into or out of the pile gripper. The drive assembly 3 is a hydraulic cylinder, with the cylinder body fixed to the end of the track 1 away from the pile gripper, and the piston rod end hinged to the pallet trolley 2. The drive assembly 3 can be powered by the hydraulic system of the static pile driver, or it can be a separate power unit.

[0021] In one specific embodiment, the quick-fixing device may further include an adjusting support for adjusting the height and horizontal angle of the track 1 to accommodate different models of static pressure pile drivers.

[0022] In one specific embodiment, the track 1 is made of 10# channel steel, the anti-collision fence 4 is assembled by welding 10# channel steel, and the pallet trolley 2 is composed of 50mm thick steel plate and four wheels.

[0023] The static pressure pile construction method using the aforementioned rapid static pressure pile fixing device includes the following steps: S1. Move the static pressure pile driver into position and install a quick-fixing device in front of its pile gripper inlet; S2. Hoist the static pressure pile 6 and vertically place it into the crash barrier 4, and then place it on the pallet trolley 2; S3. Start the drive assembly 3 to push the pallet trolley 2 to move along the track 1 and smoothly transport the static pile 6 to the clamping position of the pile gripper. S4. After the control pile clamp clamps the static pile 6, the drive component 3 pulls the pallet trolley 2 back to the initial position. S5. Perform the driving operation of static pressure pile 6; S6. Repeat steps S2 to S5 until all construction is completed.

[0024] Compared with existing technologies, the rapid fixing device of this invention enables short-distance, precise transport of static pressure piles, reducing the extreme requirements for crane lifting height and precision, decreasing the frequency of use and rental costs of large auxiliary lifting equipment, and saving labor costs. The crash barrier prevents direct collisions between the pile and the counterweight; the rail-trolley transport achieves frictionless movement of the pile, effectively protecting its integrity and ensuring pile quality. This invention's construction method reduces driver difficulty and visual stress, streamlines the construction process, significantly improves single-pile construction efficiency, and shortens the overall construction period.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, they should all be considered to be within the protection scope of the present invention.

Claims

1. A rapid fixing device for static pressure piles, installed at the inlet of the pile gripper of a static pressure pile driver, characterized in that, Includes a track (1), a pallet trolley (2), a drive assembly (3), and a crash barrier (4). The track (1) is laid to the entrance of the pile gripper. The pallet trolley (2) is set on the track (1). The crash barrier (4) is fixedly installed on the pallet trolley (2). The drive assembly (3) is connected to the pallet trolley (2) for driving the pallet trolley (2) to move back and forth along the track (1) to send the static pile (6) into or out of the pile gripper.

2. The rapid fixing device for static pressure piles according to claim 1, characterized in that, The crash barrier (4) is a frame structure made of welded steel sections, with a buffer liner (5) on its inner side.

3. The rapid fixing device for static pressure piles according to claim 1, characterized in that, The track (1) consists of two parallel channel steels, and the bottom of the pallet trolley (2) is equipped with wheels that cooperate with the channel steels.

4. The rapid fixing device for static pressure piles according to claim 1, characterized in that, The drive assembly (3) is a hydraulic cylinder. The cylinder body is fixed to the end of the track (1) away from the pile driver, and the piston rod end is hinged to the pallet trolley (2).

5. A method for constructing static pressure piles using the rapid fixing device for static pressure piles as described in any one of claims 1-4, characterized in that, Includes the following steps: S1. Move the static pressure pile driver into position and install a quick-fixing device in front of its pile gripper inlet; S2. Hoist the static pressure pile (6) and place it vertically into the crash barrier (4), and then place it on the pallet trolley (2); S3. Start the drive assembly (3) to push the pallet trolley (2) to move along the track (1) and smoothly transport the static pile (6) to the clamping position of the pile holder; S4. After the control pile clamp clamps the static pile (6), the drive assembly (3) pulls the pallet trolley (2) back to the initial position. S5. Perform the driving operation of static pressure piles (6); S6. Repeat steps S2 to S5 until all construction is completed.

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