Pile feeding device and pile machine

Abstract

The pile feeding device comprises a pile feeding body and a pile connecting structure, the pile connecting structure is arranged at the bottom of the pile feeding body and used for being detachably connected with the end of a precast pile, and the pile connecting structure comprises a first connecting piece, a second connecting piece, a fastening piece and a driving part; wherein a plurality of through holes are formed in the first connecting piece, gourd-shaped holes are formed in the positions, corresponding to the through holes, of the second connecting piece, the fastening piece can be connected with the end of a precast pile in a fastened mode, and the fastening piece can penetrate through the through holes and the gourd-shaped holes and is connected with small-diameter holes of the gourd-shaped holes in a clamped mode. The driving component can drive the second connecting piece to slide relative to the first connecting piece in the length direction of the gourd-shaped hole. The device has the advantages that the structure is simple, and the automation degree and the working efficiency are improved.

Description

A pile driving device and pile driver Technical Field

[0001] This application relates to the field of precast pile construction technology, specifically a pile driving device and a pile driver. Background Technology

[0002] Precast piles are manufactured in factories and have the advantages of static pressure construction, fast construction speed, large single pile bearing capacity, low overall cost, reliable construction quality, and the ability to meet the requirements of different geological conditions and working conditions. They are now widely used in pile foundations of buildings.

[0003] As urban land becomes increasingly congested, urban space needs to be expanded underground. This means that during construction, the top elevation of piles often needs to be several meters or even tens of meters below the ground level. This process requires the use of pile drivers to drive the piles to the predetermined elevation. During the precast pile driving process, after the pile driver has driven the pile to the designated position, the extension rod or tie rod of the pile driver needs to be detached from the precast pile.

[0004] Currently, most operations in the industry rely on manual operation, positioning, and connection, or semi-automatic operation achieved through manual assistance and mechanical positioning, resulting in low efficiency. With the ongoing automation progress across various industries, pile drivers urgently need a structural solution that enables automatic connection and disconnection from precast piles. Summary of the Invention

[0005] The purpose of this application is to provide a feeding device to solve the problem of automatic connection and disconnection between the feeding device and the precast pile.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A pile driving device, comprising:

[0008] Send pile body;

[0009] A pile-connecting structure is provided at the bottom of the pile-driving body for detachable connection with the end of the precast pile. The pile-connecting structure includes a first connector, a second connector, fasteners, and a driving component.

[0010] The first connector has several through holes, and the second connector has a gourd hole at a position corresponding to the through holes. The fastener can be fastened to the end of the precast pile. The fastener can pass through the through holes and the gourd hole and engage with the small diameter hole of the gourd hole. The driving component can drive the second connector to slide relative to the first connector along the length direction of the gourd hole.

[0011] In one optional embodiment of the pile driving device, the fastener includes a threaded connection section and an insertion section located at one end of the threaded connection section. The threaded connection section can be connected to the end of the precast pile, and the insertion section can pass through the gourd hole and the through hole and can be engaged with the small diameter hole of the gourd hole.

[0012] In one optional embodiment of the pile driving device, the plug-in section includes two snap-fit ​​portions and an intermediate portion located between the two snap-fit ​​portions. The maximum diameter of the two snap-fit ​​portions is greater than the maximum diameter of the intermediate portion. The maximum diameter of the snap-fit ​​portion away from the threaded connection section is less than or equal to the diameter of the through hole and the large diameter of the gourd hole. The maximum diameter of the two snap-fit ​​portions is greater than the small diameter of the gourd hole.

[0013] In one optional embodiment of the pile driving device, the driving component includes a first mounting base, a second mounting base, and a driving member. The first mounting base is mounted on the first connecting member, and the second mounting base is mounted on the second connecting member. The first connecting member and the second connecting member are drivenly connected by the driving member. The second connecting member has a clearance space to avoid the first mounting base.

[0014] In one optional embodiment of the pile driving device, the driving component is one of a driving cylinder, a driving air cylinder, or a driving motor;

[0015] And / or, the drive component is provided with a sealing ring.

[0016] In one optional embodiment of the pile driving device, the first connector and the second connector are provided with a plurality of limiting slots, and the other is provided with a limiting protrusion passing through the limiting slots. The first connector is provided with stop members at both ends in the direction of movement of the second connector.

[0017] In one alternative embodiment of the pile driving device, the first connecting member can be detachably installed at the bottom of the pile driving body, or it can be integrally formed at the bottom of the pile driving body.

[0018] In one optional embodiment of the pile driving device, the cross-sectional outer contour shape of the pile driving body is similar to the end contour of the precast pile. The top of the pile driving body is provided with at least one connecting hole, and the side of the pile driving body is provided with at least one flushing part. The flushing part includes a flushing port opened on the side of the pile driving body and a sealing plate covering the flushing port.

[0019] In one optional embodiment of the pile driving device, the pile driving body is provided with a guide hole, the guide hole extending from the top surface of the pile driving body to the bottom surface of the pile driving body, the pile driving device includes an unlocking rod, the unlocking rod is inserted through the guide hole and can move along the guide hole, the bottom of the unlocking rod is provided with a first inclined surface, and the second connector is provided with a second inclined surface on one side of the length direction of the gourd hole, which cooperates with the first inclined surface.

[0020] A pile driver includes a pile driver body and a pile feeding device as described in any of the above claims, wherein the pile feeding device is detachably installed on the pile driver body.

[0021] Compared with the prior art, the beneficial effects of this application are as follows: by setting a pile connecting structure at the bottom of the pile delivery body, the pile connecting structure includes a first connector with several through holes, a second connector with a gourd hole corresponding to the through holes, a fastener that can be fastened to the end of the precast pile and can pass through the through holes and the gourd hole and engage with the small diameter hole of the gourd hole, and a driving component that drives the second connector to slide relative to the first connector along the length direction of the gourd hole, so that when the second connector slides relative to the first connector, the gourd hole on the second connector can engage and disengage with the fastener at the end of the precast pile, thereby realizing the automatic connection and separation of the delivery body and the precast pile, which greatly improves the degree of automation and operation efficiency. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the connection between the feeding device and the precast pile in Embodiment 1 of this application;

[0023] Figure 2 is an exploded structural diagram of the connection between the feeding device and the precast pile in Embodiment 1 of this application;

[0024] Figure 3 is a schematic diagram of the feeding device in Embodiment 1 of this application;

[0025] Figure 4 is a schematic diagram of the connection between the pile-connecting structure and the precast pile in Embodiment 1 of this application;

[0026] Figure 5 is an enlarged structural diagram of part A in Figure 4;

[0027] Figure 6 is a schematic diagram of the pile connection structure in Embodiment 1 of this application;

[0028] Figure 7 is a top view of the pile connection structure in Embodiment 1 of this application;

[0029] Figure 8 is a bottom view of the pile connection structure in Embodiment 1 of this application;

[0030] Figure 9 is a front view schematic diagram of the fastener in Embodiment 1 of this application;

[0031] Figure 10 is a schematic diagram of the connection between the feeding device and the precast pile in Embodiment 2 of this application;

[0032] Figure 11 is a top view of the connection between the feeding device and the precast pile in Embodiment 2 of this application;

[0033] Figure 12 is a cross-sectional view of BB in Figure 11;

[0034] Figure 13 is an enlarged schematic diagram of part B in Figure 12.

[0035] In the attached image:

[0036] 1. Feeding and loading device; 11. Pile body; 111. Connecting hole; 112. Flushing part; 12. Pile connecting structure; 121. First connecting piece; 1211. Through hole; 1212. Limiting protrusion; 1213. Stop piece; 122. Second connecting piece; 1221. Hoop hole; 1221a. Large diameter hole; 1221b. Small diameter hole; 1222. Clearance space; 1223. Limiting groove hole; 1224. Second inclined surface; 123. Fastener; 1231. Threaded connection section; 1232. Insertion section; 1232a. Snap-fit ​​part; 1232b. Middle part; 124. Driving component; 1241. First mounting base; 1242. Second mounting base; 1243. Driving component; 2. Precast pile; 3. Unlocking rod; 31. First inclined surface; 4. Positioning pin. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] In this document, terms such as "upper," "lower," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection. Moreover, relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0039] <Example 1>

[0040] As shown in Figures 1-9, this embodiment provides a feeding device 1 for pile driving construction, including a pile feeding body 11 and a pile connecting structure 12. The pile connecting structure 12 is disposed at the bottom of the pile feeding body 11 and is detachably connected to one end of the precast pile 2. Specifically, before the precast pile 2 is driven, the feeding device 1 is connected to one end of the precast pile 2 through the pile connecting structure 12, and then the pile driving begins. After the pile driving is completed, the feeding device 1 can automatically detach from the precast pile 2 through the pile connecting structure 12, completing the settlement of the precast pile 2.

[0041] As shown in Figures 2-3 and 6-8, the pile-connecting structure 12 includes a first connecting member 121, a second connecting member 122, fasteners 123, and a driving component 124. In this embodiment, the first connecting member 121 is a plate-like structure with several through holes 1211 penetrating the plate. The second connecting member 122 is also a plate-like structure, stacked on top of the first connecting member 121, and has gourd-shaped holes 1221 corresponding to the positions of the through holes 1211 on the first connecting member 121. The gourd-shaped holes 1221 include a large-diameter hole 1221a and a small-diameter hole 1221b. Several fasteners 123 are fastened to the ends of the precast pile 2, and the fasteners 123 can be detachably fastened to the ends of the precast pile 2. The fasteners 123 penetrate the through holes 1211 on the first connecting member 121 and the gourd-shaped holes 1221 on the second connecting member 122. The driving component 124 can drive the second connector 122 to slide back and forth on the first connector 121 along the length direction of the gourd hole 1221, so that the fastener 123 can engage or disengage with the small diameter hole 1221b of the gourd hole 1221 of the second connector 122, thereby connecting or disengaging the pile feeding device 1 with the precast pile 2.

[0042] Specifically, before the precast pile 2 is driven, the pile feeding device 1 moves toward the end of the precast pile 2, so that the fastener 123 fastened to the end of the precast pile 2 passes through the through hole 1211 of the first connector 121 and the gourd hole 1221 of the second connector 122. Then, the driving component 124 drives the second connector 122 to move along the direction of the first connector 121 toward the small diameter hole 1221b of the gourd hole 1221. The first connector 121 remains stationary, and the fastener 123 enters the small diameter hole 1221b of the gourd hole 1221 and engages with the small diameter hole 1221b of the gourd hole 1221, thereby realizing the connection between the feeding device 1 and the precast pile 2.

[0043] After the precast pile 2 has settled, when it is necessary to remove the feeding body 11 from the precast pile 2, the driving component 124 drives the second connecting piece 122 to slide back along the first connecting piece 121, and the fastener 123 enters the large diameter hole 1221a of the gourd hole 1221 and separates from the small diameter hole 1221b of the gourd hole 1221, so that the pile feeding device 1 is disengaged from the precast pile 2.

[0044] The aforementioned feeding device 1 can automatically connect and disconnect from the precast pile 2, exhibiting high automation and work efficiency.

[0045] As shown in Figures 7-8, in this embodiment, the diameter of the large-diameter hole 1221a is equal to the diameter of the corresponding through hole 1211, while the diameter of the small-diameter hole 1221b is smaller than the diameter of the through hole 1211. This allows the fastener 123 to engage or disengage with the small-diameter hole 1221b when the driving component 124 drives the second connector 122 to move back and forth on the first connector 121. This design has the advantages of simple structure and improved automation efficiency. In this embodiment, the through hole 1211 is a circular hole penetrating the first connector 121, and the large-diameter hole 1221a and the small-diameter hole 1221b are circular holes penetrating the second connector 122. The large-diameter hole 1221a and the small-diameter hole 1221b are interconnected. This is merely a preferred embodiment; under certain circumstances, the diameter of the large-diameter hole 1221a can be larger or smaller than the diameter of the through hole 1211, and the diameter of the small-diameter hole 1221b can be larger or equal to the diameter of the through hole 1211. Furthermore, the shapes of the through hole 1211, the large-diameter hole 1221a, and the small-diameter hole 1221b can also be polygonal, elliptical, triangular, or other shapes, without specific limitations. The fastener 123 only needs to be able to pass through the through hole 1211 and the large-diameter hole 1221a and engage with the small-diameter hole 1221b.

[0046] As shown in Figure 9, in this embodiment, the fastener 123 includes a threaded connection section 1231 and a plug-in section 1232. As can be seen from Figure 2 or Figure 5, the fastener 123 is detachably fastened to the end of the precast pile 2 through the threaded connection section 1231, and the plug-in section 1232 can pass through the gourd hole 1221 and the through hole 1211 and can be engaged with the small diameter hole 1221b of the gourd hole 1221.

[0047] As shown in Figure 9, in this embodiment, the insertion segment 1232 includes two snap-fit ​​portions 1232a and a middle portion 1232b located between the two snap-fit ​​portions 1232a. The maximum diameter of the two snap-fit ​​portions 1232a is greater than the maximum diameter of the middle portion 1232b. The maximum diameter of the snap-fit ​​portion 1232a away from the threaded connection segment 1231 is less than or equal to the diameter of the through hole 1211 and the diameter of the large-diameter hole 1221a of the gourd hole 1221, so that the insertion segment 1232 can pass through the through hole 1211 and the gourd hole 1221. The maximum diameter of the two snap-fit ​​portions 1232a is greater than the diameter of the small-diameter hole 1221b of the gourd hole 1221, so that when the middle portion 1232b passes through the small-diameter hole 1221b, the two snap-fit ​​portions 1232a are respectively snapped onto both sides of the small-diameter hole 1221b to achieve a fixing effect.

[0048] In this embodiment, referring to Figures 5-7, the driving component 124 mentioned in the above structure includes a first mounting base 1241 mounted on the first connector 121 and a second mounting base 1242 mounted on the second connector 122, as well as a driving component 1243 for connecting the first mounting base 1241 and the second mounting base 1242. In this application, the driving component 124 is connected and fixed to the first connector 121 through the first mounting base 1241 and to the second connector 122 through the second mounting base 1242. The driving power of the driving component 1243 enables the second connector 122 to slide back and forth relative to the first connector 121, ensuring that the gourd hole 1221 on the second connector 122 is engaged or disengaged from the fastener 123. As shown in Figure 6 or Figure 7, in order to ensure that the second connector 122 can move relative to the first connector 121, a clearance space 1222 is provided on the second connector 122 to avoid the first mounting seat 1241, so that the second connector 122 has a sliding space.

[0049] In this embodiment, the drive component 124 can be automatically controlled via electrical control, and the drive element 1243 can be a drive cylinder, drive pneumatic cylinder, drive motor, or other actuating components. The choice of actuating components is relatively high, and appropriate selection can be made according to actual needs, greatly improving work efficiency and automation. Furthermore, a sealing ring (not shown in the figure) is provided on the drive element 1243 to prevent water from entering and causing damage, improving the convenience and safety of equipment cleaning and maintenance.

[0050] Furthermore, in this embodiment, as shown in Figures 6-8, a plurality of limiting slots 1223 penetrating the second connecting member 122 are provided, while the first connecting member 121 is provided with limiting protrusions 1212 that cooperate with the limiting slots 1223. The positions of the limiting protrusions 1212 and the limiting slots 1223 can be interchanged. The limiting protrusions 1212 pass through the limiting slots 1223, and the first connecting member 121 is also provided with stop members 1213 at both ends in the direction of movement of the second connecting member 122. In this application, the limiting protrusions 1212, by cooperating with the limiting slots 1223, can limit the relative displacement between the first connecting member 121 and the second connecting member 122, so that the connection or separation position of the feeding device 1 and the precast pile 2 is appropriate during each pile driving construction, avoiding excessive movement and ensuring the safety and stability of the feeding device 1. The stopper 1213 serves to fix and position the pile driving body 11 and the pile connecting structure 12, preventing the drive component 124 from moving beyond its limit and improving the safety and stability of the feeding device 1.

[0051] The first connector 121 and the pile driving body 11 can be configured as a detachable structure, meaning that the first connector 121 can be detachably installed at the bottom of the pile driving body 11. Alternatively, the first connector 121 can also be integrally formed with the pile driving body 11. Changes can be made according to actual needs.

[0052] In this embodiment, as shown in Figure 3, the cross-sectional outer contour of the pile-driving body 11 is modeled after the end contour of the precast pile 2, facilitating connection and fixation with the precast pile 2. At least one connecting hole 111 is also provided on the top of the pile-driving body 11 to facilitate connection between the pile-driving body 111 and external equipment. Furthermore, at least one flushing section 112 is provided on the side of the pile-driving body 11. The flushing section 112 includes a flushing port on the side of the pile-driving body 11 and a sealing plate covering the flushing port. When cleaning is required, the sealing plate on the flushing port can be removed, improving the convenience of equipment flushing and maintenance.

[0053] <Example 2>

[0054] As shown in Figures 10-13, in this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0055] Compared to Embodiment 1, the pile driving device 1 provided in this embodiment has the following structural design differences:

[0056] In this embodiment, as shown in Figure 12, the pile driving body 11 is provided with a guide hole, which extends from the top surface of the pile driving body 11 to the bottom surface of the pile driving body 11. The pile driving device 1 includes an unlocking rod 3, which is inserted into the guide hole and can move along the guide hole. As shown in Figure 13, a first inclined surface 31 is provided at the bottom of the unlocking rod 3. The second connecting member 122 has a second inclined surface 1224 on one side of the length direction of the gourd hole 1221, which cooperates with the first inclined surface 31. When the precast pile 2 settles, the top of the unlocking rod 3 is hammered. The unlocking rod 3 moves downward within the guide hole of the pile-feeding body 11. The first inclined surface 31 at the bottom of the unlocking rod 3 impacts or pushes against the second inclined surface 1224 on the second connecting member 122, causing the second connecting member 122 to move along the length direction of the gourd hole 1221 relative to the first connecting member 121. When the small diameter hole 1221b of the gourd hole 1221 on the second connecting member 122 moves to the position of the fastener 123, the small diameter hole 1221b engages and is fixed with the fastener 123, achieving the purpose of locking the feeding device 1 and the precast pile 2. After the precast pile 2 has settled, it is necessary to unlock the connection between the feeding device 1 and the precast pile 2 by pulling the unlocking rod 3 upward from the guide hole.

[0057] In addition, to prevent the large-diameter hole 1221a from failing to return to the position of coinciding with the through hole 1211 after the unlocking rod 3 is pulled out, the driving component 124 can be used to drive the second connector 122 to move in the opposite direction to achieve the purpose of releasing the locking between the feeding device 1 and the precast pile 2.

[0058] In addition, an unlocking rod 3 can be set on the other side of the length direction of the pile driving body 11. By hammering the unlocking rod 3 on the other side, the second connecting piece 122 moves in the opposite direction, so that the large diameter hole 122a returns to the position that coincides with the through hole 1211, thereby achieving the purpose of releasing the locking between the delivery device 1 and the precast pile 2.

[0059] In this embodiment, by setting the unlocking rod 3, on the one hand, the locking and separation of the feeding device 1 and the precast pile 2 can be completed more conveniently by hammering, which has the functions of simple structure and convenience. On the other hand, it can also avoid the situation that the feeding device 1 cannot be used when the driving component 124 fails, thus solving the problem of how to separate the feeding device 1 and the precast pile 2 when the driving component 124 fails.

[0060] In this embodiment, to prevent the unlocking rod 3 from being squeezed upwards by the second inclined surface 1224 of the second connector 122, thus preventing the feeding device 1 from locking with the precast pile 2, as shown in Figure 12, at least one positioning pin 4 penetrating the unlocking rod 3 can be provided on the side of the pile feeding body 11. This can be used according to specific construction conditions.

[0061] To prevent the unlocking rod 3 from deflecting too much at the end during hammering and thus failing to slide, at least one support block (not shown in the figure) can be provided on one side of the unlocking rod 2 inside the guide hole. This block can be understood as being detachably abutting against one side of the unlocking rod 3 in the width direction, and moving along the guide hole with the unlocking rod 3. The choice can be made according to the specific construction situation.

[0062] <Example 3>

[0063] In this embodiment, the parts that are the same as in Embodiments 1 and 2 are given the same reference numerals, and the same text descriptions are omitted.

[0064] Compared to Embodiments 1 and 2, this embodiment provides a pile driver, which includes a pile driver body and the aforementioned pile delivery device 1. In this embodiment, the delivery device 1 is detachably installed on the pile driver body. The connection between the pile driver body and the pile delivery device 1 is made through a connection hole 111 provided on the top of the pile delivery body 11. There is at least one connection hole 111, which can be appropriately changed according to the actual working conditions. In this embodiment, the pile driver can be one of a static pressure pile driver, a composite pile driver, a crane, or other equipment with the same function. The pile driver includes the pile driving delivery device in Embodiments 1 and 2. When the pile driver is performing pile driving operations, it can achieve automated control of connecting or separating from the precast pile 2. Compared with the traditional manual connection and separation of the pile driver and the precast pile 2, the efficiency is greatly improved and labor costs are saved.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A pile driving device, characterized in that, include: Send pile body; A pile-connecting structure is provided at the bottom of the pile-driving body for detachable connection with the end of the precast pile. The pile-connecting structure includes a first connector, a second connector, a fastener, and a driving component. The first connector has several through holes, and the second connector has a gourd-shaped hole at a position corresponding to the through holes. The fastener can be fastened to the end of the precast pile and can pass through the through holes and the gourd-shaped hole, engaging with the small-diameter hole of the gourd-shaped hole. The driving component can drive the second connector to slide relative to the first connector along the length direction of the gourd-shaped hole.

2. The pile driving device according to claim 1, characterized in that, The fastener includes a threaded connection section and a plug-in section located at one end of the threaded connection section. The threaded connection section can be connected to the end of the precast pile, and the plug-in section can pass through the gourd hole and the through hole and can be engaged with the small diameter hole of the gourd hole.

3. The pile driving device according to claim 2, characterized in that, The insertion section includes two snap-fit ​​portions and an intermediate portion located between the two snap-fit ​​portions. The maximum diameter of the two snap-fit ​​portions is greater than the maximum diameter of the intermediate portion. The maximum diameter of the snap-fit ​​portion away from the threaded connection section is less than or equal to the diameter of the through hole and the large diameter of the gourd hole. The maximum diameter of the two snap-fit ​​portions is greater than the small diameter of the gourd hole.

4. The pile driving device according to claim 1, characterized in that, The driving component includes a first mounting base, a second mounting base, and a driving member. The first mounting base is mounted on the first connecting member, and the second mounting base is mounted on the second connecting member. The first connecting member and the second connecting member are drivenly connected by the driving member. The second connecting member has a clearance space to avoid the first mounting base.

5. The pile driving device according to claim 4, characterized in that, The driving component is one of a driving cylinder, a driving air cylinder, or a driving motor; and / or, the driving component is provided with a sealing ring.

6. The pile driving device according to any one of claims 1-5, characterized in that, The first connector and the second connector each have a plurality of limiting slots and a limiting protrusion that passes through the limiting slots. The first connector has stop members at both ends in the direction of movement of the second connector.

7. The pile driving device according to any one of claims 1-5, characterized in that, The first connector can be detachably installed at the bottom of the pile driving body, or it can be integrally formed at the bottom of the pile driving body.

8. The pile driving device according to any one of claims 1-5, characterized in that, The cross-sectional outer contour of the pile driving body is similar to the end contour of the precast pile. The top of the pile driving body is provided with at least one connecting hole, and the side of the pile driving body is provided with at least one flushing part. The flushing part includes a flushing port opened on the side of the pile driving body and a sealing plate covering the flushing port.

9. The pile driving device according to any one of claims 1-5, characterized in that, The pile driving body is provided with a guide hole, which extends from the top surface of the pile driving body to the bottom surface of the pile driving body. The pile driving device includes an unlocking rod, which is inserted through the guide hole and can move along the guide hole. The bottom of the unlocking rod is provided with a first inclined surface. The second connector is provided with a second inclined surface on one side of the length direction of the gourd hole, which cooperates with the first inclined surface.

10. A pile driver, characterized in that, The device includes a pile driver body and a pile driving device as described in any one of claims 1-9, wherein the pile driving device is detachably installed on the pile driver body.

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