pneumatic pile driver

Abstract

This utility model provides a pneumatic pile driver, including a body, a clamping assembly, and a drive mechanism. The body has a pneumatic hammer for hammering the pile. The clamping assembly is located below the pneumatic hammer and has multiple abutment plates spaced apart along the circumference of the body. Each abutment plate is horizontally slidably connected to the body along its radial direction, and the abutment plates together form a clamping opening. The drive mechanism is located on the body and has multiple power output ends, each power output end being connected to abutment plates to drive the clamping opening and closing. The pneumatic pile driver provided by this utility model utilizes a drive mechanism with multiple power output ends to synchronously move each abutment plate to form a clamping opening for the pile. This replaces the traditional manual clamping method of adjusting bolts one by one, ensuring that the abutment force of each abutment plate on the pile is synchronous and balanced, effectively improving the alignment accuracy between the pile and the impact centerline of the pneumatic hammer, and avoiding eccentric impact.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic pile driving technology, specifically relating to a pneumatic pile driver. Background Technology

[0002] Pneumatic piling is a foundation construction technique that uses compressed air as a power source to drive piles into the ground or a designated medium through the reciprocating impact motion of a pneumatic hammer. Its working principle involves an air compressor generating high-pressure compressed air, which is then piped to the cylinder of the pneumatic piling hammer. This air drives a piston in a high-speed reciprocating motion, causing the impact hammer at the lower end of the piston to continuously strike the top of the pile. The impact force is converted into axial pressure on the pile, thus achieving the sinking of the pile.

[0003] In existing pneumatic piling equipment, pile clamping primarily relies on manually adjusting bolts against the pile's sidewall. By tightening or loosening the circumferentially distributed bolts, the bolt ends press against the pile's sidewall to achieve clamping and fixation. However, this adjustment process requires manual operation of each bolt individually, and the alignment accuracy depends entirely on the operator's experience and judgment. This makes it difficult to ensure precise alignment between the pile's centerline and the pneumatic hammer's impact centerline, easily leading to eccentric impact. This not only causes uneven stress on the pile, resulting in quality problems such as bending and breakage, but also exacerbates wear on the clamping parts due to uneven bolt stress, reducing equipment lifespan. Furthermore, the additional impact force generated by alignment deviation increases energy consumption, affecting construction efficiency and the stability of construction quality. Utility Model Content

[0004] This utility model provides a pneumatic pile driver, which aims to improve the accuracy of hammering the centerline of the pile during pile driving.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a pneumatic pile driver is provided, including a body, a clamping assembly, and a driving mechanism; the body has a pneumatic hammer for hammering piles; the clamping assembly is located below the pneumatic hammer and has multiple abutment plates spaced apart along the circumference of the body, each abutment plate being horizontally slidably connected to the body along the radial direction, and the abutment plates together forming a clamping opening; the driving mechanism is located on the body and has multiple power output ends, each power output end being respectively connected to each abutment plate to drive the clamping opening to open and close.

[0006] In one possible implementation, the side wall of the body is provided with multiple clearance openings at intervals, and each clearance opening is provided with a sliding groove extending radially along the body, and each abutment plate is slidably connected to each sliding groove.

[0007] In some embodiments, each abutment plate is provided with a slide rod that slides in conjunction with the slide groove, and an elastic element is provided at the end of the slide rod away from the abutment plate, with one end of the elastic element connected to the slide groove.

[0008] In one possible implementation, the drive mechanism includes at least two telescopic drive members and a transmission assembly; each telescopic drive member is circumferentially disposed on the body along the side wall of the body; the transmission assembly is disposed on the body and has a power input end and multiple power output ends, the power input end being connected to the output ends of each telescopic drive member.

[0009] In some embodiments, the transmission assembly includes a sliding ring and multiple rotating rods; the sliding ring, as the power output end, is connected to the output end of each telescopic drive component and is slidably connected to the machine body along the axial direction of the machine body; multiple pushing components are arranged at intervals along the circumference of the bottom of the sliding ring; each rotating rod is correspondingly arranged below each pushing component and is hinged to the machine body; a pressure rod is provided at the end of the rotating rod near the pushing component; wherein, the sliding ring drives each pushing component to move downward and press down the pressure rod, so that the rotating rod abuts against the corresponding abutment plate.

[0010] For example, the bottom of the pusher is provided with a first roller, which rolls against the top wall of the pusher.

[0011] For example, a second roller is provided at the end of the rotating rod away from the pressure rod, and the second roller rolls against the side wall of the abutment plate.

[0012] In one possible implementation, the bottom of the machine body is provided with a positioning port for the pile body to enter, and the positioning port has an inner conical surface inside.

[0013] For example, a buffer layer is provided on the side of the abutment plate closest to the pile.

[0014] In some embodiments, the pneumatic pile driver also includes a high-pressure air source connected to the pneumatic hammer and the drive mechanism.

[0015] The beneficial effects of the pneumatic pile driver provided by this utility model are as follows: Compared with the prior art, this utility model sets up multiple abutment plates that are spaced apart along the circumference of the machine body and can slide synchronously horizontally along the radial direction of the machine body. A drive mechanism with multiple power output ends drives each abutment plate to move synchronously to form a clamping jaw against the pile body. This ensures that the abutment force of each abutment plate on the pile body is synchronous and balanced, effectively improving the alignment accuracy between the pile body and the impact centerline of the pneumatic hammer and avoiding eccentric impact. Simultaneously, multiple abutment plates abut against the circumferential wall of the pile body, making the pile body more evenly stressed and reducing quality problems such as pile bending and breakage caused by uneven stress. Furthermore, the drive mechanism drives the abutment plates to slide synchronously to achieve automatic clamping, which can replace the traditional manual clamping method of adjusting bolts one by one. This eliminates the need for manual operation, simplifies the operation process, improves the construction efficiency of pile driving, and reduces the additional impact force caused by alignment deviation after improving alignment accuracy, thus reducing energy consumption and helping to ensure the stability of construction quality. Attached Figure Description

[0016] Figure 1A three-dimensional structural schematic diagram of the pneumatic pile driver provided in an embodiment of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the clamping assembly used in the embodiment of this utility model;

[0018] Figure 3 for Figure 2 A magnified view of area A in the middle;

[0019] Figure 4 This is a three-dimensional structural diagram of the driving mechanism used in the embodiments of this utility model;

[0020] Figure 5 for Figure 4 A magnified view of area B in the middle;

[0021] Figure 6 This is a front view structural diagram of the pneumatic pile driver provided in an embodiment of the present utility model.

[0022] In the diagram: 10. Body; 11. Clearance opening; 12. Slide groove; 13. Slide rail; 14. Positioning opening; 20. Clamping assembly; 21. Abutment plate; 22. Slide rod; 23. Elastic element; 24. Buffer layer; 30. Drive mechanism; 31. Telescopic drive element; 32. Transmission assembly; 321. Sliding ring; 322. Pushing element; 323. Rotating rod; 324. Pressure rod; 325. First roller; 326. Second roller; 40. Pneumatic hammer; 50. High-pressure air source; 60. Pile body. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Please refer to the following: Figures 1 to 6 The pneumatic pile driver provided by this utility model will now be described. The pneumatic pile driver includes a body 10, a clamping assembly 20, and a drive mechanism 30; the body 10 has a pneumatic hammer 40 for hammering a pile body 60; the clamping assembly 20 is located below the pneumatic hammer 40 and has a plurality of abutment plates 21 spaced apart along the circumference of the body 10, each abutment plate 21 being horizontally slidably connected to the body 10 along the radial direction, and the abutment plates 21 together form a clamping opening; the drive mechanism 30 is located on the body 10 and has a plurality of power output ends, each power output end being respectively connected to each abutment plate 21 to drive the clamping opening and closing.

[0026] It should be noted that the machine body 10, as the basic load-bearing structure, is equipped with a pneumatic hammer 40 for driving the pile 60. The pneumatic hammer 40 uses high-pressure compressed air as its power source, which enters the internal cylinder. The compressed air pushes the piston in the cylinder to perform high-speed reciprocating motion. When the piston moves downward, the impact hammer at its lower end moves downward as well, quickly striking the top of the pile 60 located below. When the piston moves upward, the pneumatic hammer 40 separates from the pile 60, accumulating energy for the next strike. Through this continuous reciprocating motion of the piston, the pneumatic hammer 40 continuously converts the energy of the compressed air into axial impact force on the pile 60, causing the pile 60 to gradually sink into the foundation or designated medium, thereby completing the pile driving operation.

[0027] The clamping assembly 20 is located below the pneumatic hammer 40 and is on the force transmission path when the pile 60 is hammered. It includes multiple abutment plates 21 that are spaced apart along the circumference of the machine body 10. Each abutment plate 21 can be horizontally slidably connected to the machine body 10 along the radial direction of the machine body 10. The abutment plates 21 together form a clamp for accommodating and clamping the pile 60. The drive mechanism 30 is set on the machine body 10, and its multiple power output ends are connected to each abutment plate 21 in a one-to-one correspondence to form a power transmission relationship.

[0028] When it is necessary to clamp the pile 60, the drive mechanism 30 synchronously drives the corresponding abutment plates 21 to slide horizontally along the radial direction of the machine body 10 through multiple power output ends, so that the clamping opening formed by the abutment plates 21 together narrows until the abutment plates 21 press against the pile 60 to complete the clamping. When it is necessary to release the pile 60, the drive mechanism 30 drives the abutment plates 21 to slide synchronously in the opposite direction, and the clamping opening widens to release the pile 60. In the clamping state, the pneumatic hammer 40 on the machine body 10 can perform hammering operations on the fixed pile 60.

[0029] Compared with the prior art, the pneumatic pile driver provided by this utility model has multiple abutment plates 21 that are spaced apart along the circumference of the machine body 10 and can slide synchronously horizontally along the radial direction of the machine body 10. The drive mechanism 30 with multiple power output ends drives each abutment plate 21 to move synchronously to form a clamping mouth to the pile body 60. This ensures that the abutment force of each abutment plate 21 on the pile body 60 is synchronous and balanced, effectively improving the alignment accuracy of the pile body 60 and the impact centerline of the pneumatic hammer 40, and avoiding eccentric impact. At the same time, the multiple abutment plates 21 all abut against the circumference of the pile body 60, making the pile body 60 more uniformly stressed and reducing quality problems such as bending and breakage of the pile body 60 caused by uneven stress. In addition, the drive mechanism 30 drives the abutment plate 21 to slide synchronously to achieve automatic clamping, which can replace the traditional manual clamping method of adjusting the bolts one by one. It eliminates the need for manual operation, simplifies the operation process, improves the construction efficiency of pile driving, and reduces the additional impact force caused by the centering deviation after improving the centering accuracy, thus reducing energy consumption and helping to ensure the stability of construction quality.

[0030] Please see Figure 2 and Figure 3 The side wall of the body 10 is provided with multiple clearance openings 11, and each clearance opening 11 is provided with a sliding groove 12 extending radially along the body 10. Each abutment plate 21 is slidably connected to each sliding groove 12.

[0031] It should be noted that multiple clearance openings 11 are distributed at intervals on the side wall of the body 10, and each clearance opening 11 provides space for the installation and movement of each abutment plate 21; each clearance opening 11 is provided with a sliding groove 12 inside, and the extension direction of the sliding groove 12 is consistent with the radial direction of the body 10.

[0032] The groove 12 can guide the sliding of the abutment plate 21. When the drive mechanism 30 drives the abutment plate 21 to slide radially along the body 10, the abutment plate 21 will move along the radial groove 12 in the clearance opening 11. The extension direction of the groove 12 can limit the movement trajectory of the abutment plate 21, so that it can only stably move closer to or away from the pile body 60 radially along the body 10, ensuring that the sliding direction of multiple abutment plates 21 is consistent and accurate.

[0033] The radial groove 12 provides a clear motion guide for the abutment plate 21, preventing the abutment plate 21 from shifting or shaking during the sliding process, ensuring the stability and consistency of the sliding of each abutment plate 21, and further improving the accuracy of the synchronous approach or departure of each abutment plate 21 from the pile body 60; each clearance opening 11 makes the installation of the abutment plate 21 more regular, which can save the internal space of the machine body 10. At the same time, the cooperation between the groove 12 and the abutment plate 21 can reduce friction interference during the sliding process, making the movement of the abutment plate 21 smoother, which helps to improve the efficiency of clamping and releasing the pile body 60, indirectly ensuring the centering accuracy and force uniformity of the pile body 60, and reducing equipment wear or construction problems caused by unstable sliding.

[0034] Please see Figure 3 Each abutment plate 21 is provided with a slide rod 22 that slides in conjunction with the slide groove 12. The end of the slide rod 22 away from the abutment plate 21 is provided with an elastic element 23, and one end of the elastic element 23 is connected to the slide groove 12.

[0035] It should be noted that the abutment plate 21 is provided with a sliding rod 22, which forms a sliding fit with the sliding groove 12 in the clearance opening 11. The sliding rod 22 can move along the extension direction of the sliding groove 12. One end of the sliding rod 22 away from the abutment plate 21 is connected to an elastic element 23, and the other end of the elastic element 23 is connected to the sliding groove 12. The elastic element 23 is located in the space between the sliding rod 22 and the sliding groove 12.

[0036] When the drive mechanism 30 drives the abutment plate 21 to slide radially along the body 10, the slide rods 22 on each abutment plate 21 slide synchronously within the slide groove 12. When the abutment plate 21 approaches the pile body 60, the slide rods 22 move inward toward the slide groove 12, and the elastic element 23 is stretched and accumulates elastic potential energy; when the abutment plate 21 moves away from the pile body 60, the elastic element 23 releases its potential energy, and the auxiliary slide rods 22 drive the abutment plate 21 to reset toward the outside of the slide groove 12.

[0037] The clearance opening 11 can be provided with sliding grooves 12 on both the upper and lower sides, and the abutment plate 21 can be provided with sliding rods 22 at both the upper and lower ends. The upper and lower ends of the abutment plate 21 are slidably connected to the sliding grooves 12 through the sliding rods 22, which can limit the movement of the abutment plate 21 and ensure that the abutment plate 21 can only slide in the horizontal direction. During this process, the sliding rods 22 always slide along the guide of the sliding grooves 12 to ensure the stability of the movement trajectory of the abutment plate 21.

[0038] The cooperation between the sliding rod 22 and the sliding groove 12 can improve the guiding accuracy of the sliding of the abutment plate 21, reduce the offset or jamming of the abutment plate 21 during sliding, and make the synchronous movement of multiple abutment plates 21 more precise. The setting of the elastic element 23 can buffer the impact force when the abutment plate 21 clamps the pile body 60, and avoid damage to the pile body 60 or the abutment plate 21 caused by rigid contact. The elastic force of the elastic element 23 can compensate for the sliding gap, making the movement of the abutment plate 21 more stable and improving the clamping stability. The function of the elastic element 23 in assisting the abutment plate 21 to reset can speed up the speed at which the abutment plate 21 releases the pile body 60, and can reset the abutment plate 21 into the clearance opening 11, so as to prevent the abutment plate 21 from blocking the pile body 60 from entering when replacing the pile body 60.

[0039] Please see Figure 4 and Figure 5 The drive mechanism 30 includes at least two telescopic drive members 31 and a transmission assembly 32; each telescopic drive member 31 is circumferentially arranged on the body 10 along the side wall of the body 10; the transmission assembly 32 is arranged on the body 10 and has a power input end and multiple power output ends, the power input end being connected to the output end of each telescopic drive member 31.

[0040] It should be noted that the telescopic drive component 31 can be a cylinder, and the number can be two or four, preferably four. They are evenly distributed on the body 10 along the circumference of the side wall of the body 10, which can provide stable and uniform telescopic power in the vertical direction. The transmission component 32 is also set on the body 10. Its power input end is connected to the output end of each telescopic drive component 31, and the multiple power output ends of the transmission component 32 are connected to each abutment plate 21, forming a power transmission path from the telescopic drive component 31 to the abutment plate 21.

[0041] When the telescopic drive component 31 is working, it generates telescopic power, which is transmitted to the power input end of the transmission component 32. After receiving the power, the transmission component 32 distributes the power through its own structure and converts it into multiple synchronous output power, which is transmitted to each abutment plate 21 through multiple power output ends, thereby driving the abutment plate 21 to slide synchronously along the radial direction of the machine body 10, thereby achieving the clamping or releasing of the pile body 60.

[0042] Multiple telescopic drive components 31 can provide balanced power input, avoid power imbalance caused by a single drive component, ensure uniform force on the transmission component 32, and reduce shaking or deviation during the driving process. As an intermediate transmission structure, the transmission component 32 can coordinate and integrate the power of multiple telescopic drive components 31, ensure the synchronicity of the actions of multiple power output ends, thereby enhancing the accuracy of synchronous sliding of the abutment plate 21 and improving the centering accuracy and force uniformity when the pile body 60 is clamped.

[0043] Please see Figure 5The transmission assembly 32 includes a sliding ring 321 and multiple rotating rods 323. The sliding ring 321 serves as the power output end and is connected to the output end of each telescopic drive member 31. It is slidably connected to the body 10 along the axial direction of the body 10. Multiple push members 322 are spaced apart at the bottom of the sliding ring 321 along its circumference. Each rotating rod 323 is correspondingly located below each push member 322 and is hinged to the body 10. A pressure rod 324 is provided at the end of the rotating rod 323 near the push member 322. The sliding ring 321 drives each push member 322 to move downward and press down the pressure rod 324 so that the rotating rod 323 abuts against the corresponding abutment plate 21.

[0044] It should be noted that multiple slide rails 13 can be arranged circumferentially on the body 10. The sliding ring 321 serves as the power output end, connecting to the output ends of each telescopic drive component 31, and simultaneously forming a sliding engagement with the multiple slide rails 13 on the body 10, allowing it to slide vertically along the slide rails 13. Multiple pushers 322 are arranged vertically and circumferentially on its bottom. During the downward movement of the pushers 322, they press down on the pressure rod 324, causing the other end of the rotating rod 323 to abut against and push the abutment plate 21.

[0045] When the telescopic drive 31 operates, it drives the sliding ring 321 to slide vertically downwards along multiple slide rails 13 on the machine body 10. Multiple pushers 322 at the bottom of the sliding ring 321 move downwards synchronously, pressing down on the pressure rod 324 on the rotating rod 323 below. Under pressure, the pressure rod 324 causes the rotating rod 323 to rotate around its pivot point on the machine body 10. The end of the rotating rod 323 away from the pressure rod 324 rotates towards the abutment plate 21 and abuts against it, thus pushing the abutment plate 21 to slide radially along the machine body 10 to achieve clamping. When the telescopic drive 31 drives the sliding ring 321 to slide upwards, the pushers 322 disengage from the pressure rod 324, and the abutment plate 21 resets under the action of the elastic element 23, pushing the rotating rod 323 back to its original position.

[0046] Multiple slide rails 13 on the body 10 provide stable guidance for the vertical movement of the sliding ring 321, preventing the sliding ring 321 from deviating and ensuring that the multiple pushing parts 322 move in unison. The sliding ring 321 acts synchronously on the pressure rod 324 of the corresponding rotating rod 323 through multiple pushing parts 322. Combined with the rotational transmission of the rotating rod 323, it can ensure that the pushing force of multiple rotating rods 323 on the abutment plate 21 is synchronous and balanced, further enhancing the synchronicity of the sliding of the abutment plate 21 and improving the centering accuracy when the pile body 60 is clamped.

[0047] Please see Figure 5 The bottom of the pusher 322 is provided with a first roller 325, which rolls against the top wall of the pressure rod 324.

[0048] It should be noted that when the sliding ring 321 drives the pusher 322 to move downward, the first roller 325 at the bottom of the pusher 322 moves downward and contacts the top wall of the pressure rod 324. As the pusher 322 continues to move downward, the first roller 325 rolls on the top wall of the pressure rod 324 and applies pressure, pushing the pressure rod 324 to drive the rotating rod 323 to rotate. Compared with direct sliding contact, the rolling method makes the relative movement between the pusher 322 and the pressure rod 324 smoother.

[0049] The rolling contact between the first roller 325 and the top wall of the pressure rod 324 reduces friction during movement, decreases wear on both, and extends the service life of the components. At the same time, the rolling contact makes the force transmission smoother and more continuous, avoids jamming or impact fluctuations that may be caused by sliding friction, ensures that the pressure of the jacking component 322 on the pressure rod 324 is transmitted evenly, and thus ensures the synchronization of the movements of multiple rotating rods 323, strengthens the stability and centering accuracy of the abutment plate 21 when clamping the pile body 60, and improves the reliability of equipment operation.

[0050] Please see Figure 5 The end of the rotating rod 323 away from the pressure rod 324 is provided with a second roller 326, which rolls against the side wall of the abutment plate 21.

[0051] It should be noted that when the pusher 322 presses down the pressure rod 324 to make the rotating rod 323 rotate, the end of the rotating rod 323 away from the pressure rod 324 rotates accordingly. At this time, the second roller 326 at this end rolls on the side wall of the abutment plate 21 and applies a thrust, converting the rotational motion of the rotating rod 323 into a force that pushes the abutment plate 21 to slide radially along the machine body 10, thereby achieving clamping of the pile body 60 or reducing frictional resistance during resetting.

[0052] Please see Figure 6 The bottom of the machine body 10 is provided with a positioning port 14 for the pile body 60 to enter, and the positioning port 14 is provided with an inner conical surface.

[0053] It should be noted that when the pile body 60 needs to be driven, the pile body 60 enters the equipment through the positioning port 14 at the bottom of the machine body 10. During the entry process, the inner conical surface inside the positioning port 14 will contact the side wall of the pile body 60. Through the guiding effect of the conical structure, the pile body 60 is guided towards the center of the positioning port 14. Even if the initial position of the pile body 60 is slightly offset, the inner conical surface can gradually correct its position, so that the pile body 60 can smoothly enter the clamping range of the clamping component 20 above, laying the foundation for the precise clamping of the clamping component 20 in the future.

[0054] Please see Figure 3 and Figure 5 A buffer layer 24 is provided on the side of the abutment plate 21 near the pile body 60.

[0055] It should be noted that the buffer layer 24 can be a plate-like structure made of elastic materials such as rubber or latex, and is installed on one side of the abutment plate 21. When the drive mechanism 30 moves the abutment plate 21 closer to and clamps the pile body 60, the buffer layer 24 on the abutment plate 21 first contacts the surface of the pile body 60. As the abutment plate 21 continues to move, the buffer layer 24 is compressed and undergoes elastic deformation, absorbing the impact force during the clamping process. When the pneumatic hammer 40 hammers the pile body 60, the vibration or small displacement generated by the pile body 60 will be further absorbed by the buffer layer 24, reducing the impact of rigid impact on both.

[0056] The buffer layer 24 can prevent direct rigid contact between the abutment plate 21 and the pile body 60, preventing the surface of the pile body 60 from being scratched or damaged due to excessive clamping force, thus protecting the integrity of the pile body 60. At the same time, the elastic deformation of the buffer layer 24 can alleviate the impact force during clamping, reduce the wear of the abutment plate 21, and extend its service life. In addition, the buffer layer 24 can adapt to the slight unevenness of the surface of the pile body 60, and enhance the fit between the abutment plate 21 and the pile body 60 through deformation, thereby improving the stability of clamping and indirectly ensuring the centering accuracy and construction quality of the pile body 60.

[0057] Please see Figure 1 The pneumatic pile driver also includes a high-pressure air source 50, which is connected to the pneumatic hammer 40 and the drive mechanism 30.

[0058] It should be noted that the high-pressure compressed air generated by the high-pressure air source 50 is delivered to the pneumatic hammer 40 and the drive mechanism 30 respectively through connecting pipelines. For the pneumatic hammer 40, the compressed air drives its internal piston to perform high-speed reciprocating motion, realizing the hammering operation on the pile 60; for the drive mechanism 30, the compressed air provides power to the telescopic drive component 31, enabling it to drive the contact plate 21 to slide synchronously, completing the clamping or releasing action on the pile 60. Both obtain power from the same high-pressure air source 50, achieving coordinated operation. Using the same high-pressure air source 50 to power both the pneumatic hammer 40 and the drive mechanism 30 simplifies the power system layout of the equipment, avoids the structural complexity problems caused by multiple power sources, and facilitates the integrated design and maintenance of the equipment.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Pneumatic pile driver, characterized in that include: The machine body has a pneumatic hammer for hammering piles; The clamping assembly, located below the pneumatic hammer, has multiple abutment plates spaced apart along the circumference of the machine body. Each abutment plate is horizontally slidably connected to the machine body along the radial direction of the machine body, and the abutment plates together form a clamping opening. A drive mechanism is provided on the machine body and has multiple power output ends. Each power output end is respectively connected to each of the abutment plates to drive the clamp to open and close.

2. The pneumatic driver as claimed in claim 1, characterized in that The side wall of the machine body is provided with multiple clearance openings at intervals, and each clearance opening is provided with a sliding groove extending radially along the machine body. Each of the abutment plates is slidably connected to each of the sliding grooves.

3. The pneumatic driver as claimed in claim 2, characterized in that Each of the abutment plates is provided with a slide rod that slides in conjunction with the slide groove. The end of the slide rod away from the abutment plate is provided with an elastic element, and one end of the elastic element is connected to the slide groove.

4. The pneumatic driver as claimed in claim 1, wherein, The drive mechanism includes: At least two telescopic drive components are arranged circumferentially on the body along the side wall of the body; A transmission assembly, located on the machine body, has a power input end and multiple power output ends, wherein the power input end is connected to the output end of each of the telescopic drive components.

5. The pneumatic driver as claimed in claim 4, characterized in that The transmission assembly includes: The sliding ring, as the power output end, is connected to the output ends of each of the telescopic drive components, and is slidably connected to the machine body along the axial direction of the machine body. Multiple pushers are arranged at intervals along the circumference of the bottom of the sliding ring. Multiple rotating rods are arranged one-to-one below each of the pushers and are all hinged to the machine body. A pressure rod is provided at the end of each rotating rod near the pusher. The sliding ring drives each of the pushing members to move downwards and press down on the pressure rod, so that the rotating rod abuts against the corresponding abutment plate.

6. The pneumatic driver as claimed in claim 5, characterized in that The bottom of the pusher is provided with a first roller, which rolls against the top wall of the pressure rod.

7. The pneumatic driver as claimed in claim 5, wherein, The rotating rod is provided with a second roller at the end away from the pressure rod, and the second roller rolls against the side wall of the abutment plate.

8. The pneumatic driver of claim 1 wherein, The bottom of the machine body is provided with a positioning port for the pile body to enter, and the positioning port is provided with an inner conical surface.

9. The pneumatic driver as defined in claim 1, wherein The abutment plate has a buffer layer on the side closest to the pile.

10. A pneumatic driver as claimed in any one of claims 1-9, characterized in that The pneumatic pile driver also includes a high-pressure air source, which is connected to the pneumatic hammer and the drive mechanism.

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