Pile driver

Abstract

The present invention provides a pile driver, which relates to the technical field of construction machinery. The pile driver includes a platform, a rotation connection mechanism and a sliding connection mechanism; the platform is connected to the rotation connection mechanism, and between the platform and the rotation connection mechanism, they can relatively rotate with the first central axis as the rotation axis; the sliding connection mechanism is connected to the rotation connection mechanism, and between the sliding connection mechanism and the rotation connection mechanism, they can relatively rotate with the second central axis as the rotation axis; both the first central axis and the second central axis are parallel to the platform, and the first central axis and the second central axis are perpendicular to each other. The present invention alleviates the technical problem in the prior art that during the use of the pile driver, external forces such as the impact force during pumping concrete and the soil pressure will cause the drill pipe to tilt, and then cause an angle and a deflection force to be generated between the drill pipe and the column, and the above-mentioned deflection force will act on the connection between the grouting platform and the column, and then cause damage to this connection.

Description

Technical Field

[0001] The present invention relates to the technical field of construction machinery, and more particularly to a pile driver. Background Art

[0002] A pile driver is a construction machine for driving piles. A pile driver generally includes a grouting platform, a grouting pipe, a hollow drill pipe, and a column. The column is erected vertically. The grouting platform is slidably connected to one side of the column by a chuck, and the grouting platform can move up and down along the length direction of the column on one side of the column. A bearing is provided on the grouting platform, and one end of the drill pipe is fixed below the grouting platform through the bearing, and the drill pipe is parallel to the column. The grouting pipe is fixed above the grouting platform and communicated with the drill pipe.

[0003] The drill pipe can rotate self-driven under the drive of a rotary drive device, and the grouting platform and the drill pipe can move along the length direction of the column on one side of the column under the drive of a lifting drive device. Under the combined action of the rotary drive device and the lifting drive device, the drill pipe can drill into the ground or drill out of the ground for drilling operations. During the drilling operation of the drill pipe, concrete can be pumped into the grouting pipe, and the concrete can flow into the drill pipe after passing through the grouting pipe, so as to reach the hole drilled by the drill pipe. After the concrete solidifies, a pile can be formed.

[0004] However, during the use of the existing pile driver, external forces such as the impact force during concrete pumping and the soil pressure will cause the drill pipe and the grouting platform to tilt. It is not easy for the drill pipe to be parallel to the column, resulting in an angle and a deflection force between the drill pipe and the column during the lifting and self-rotation processes. The above-mentioned deflection force will act on the connection between the grouting platform and the column, and further cause damage to this connection. Summary of the Invention

[0005] The purpose of the present invention is to provide a pile driver to alleviate the technical problem existing in the prior art that during the use of the pile driver, external forces such as the impact force during concrete pumping and the soil pressure will cause the drill pipe to tilt, and further cause an angle and a deflection force between the drill pipe and the column during the lifting and self-rotation processes. The above-mentioned deflection force will act on the connection between the grouting platform and the column, and further cause damage to this connection.

[0006] The pile driver provided by the present invention includes a platform, a rotational connection mechanism, and a sliding connection mechanism;

[0007] The platform is connected to the rotational connection mechanism, and between the platform and the rotational connection mechanism, they can rotate relative to each other with a first central axis as the rotation axis;

[0008] The sliding connection mechanism is connected to the rotational connection mechanism, and between the sliding connection mechanism and the rotational connection mechanism, they can rotate relative to each other with a second central axis as the rotation axis;

[0009] Both the first central axis and the second central axis are parallel to the platform, and the first central axis and the second central axis are perpendicular to each other.

[0010] Further, the rotational connection mechanism includes a bearing, and the central axis of the bearing is the first central axis;

[0011] One of the inner ring or the outer ring of the bearing is connected to the platform, and the other is rotatably connected to the sliding connection mechanism through a cylindrical rotating member, and the central axis of the rotating member is the second central axis.

[0012] Further, the rotational connection mechanism further includes a first connecting member;

[0013] The first connecting member is installed on one side of the outer ring of the bearing, and the outer ring of the bearing is connected to the platform through the first connecting member.

[0014] Further, the rotational connection mechanism further includes a second connecting member;

[0015] The second connecting member is installed on one side of the inner ring of the bearing, the rotating member is installed on the second connecting member, and the inner ring of the bearing is rotatably connected to the sliding connection mechanism through the rotating member installed on the second connecting member.

[0016] Further, both the sliding connection mechanism and the rotating member are two;

[0017] The two rotating members are installed on the same side of the second connecting member, and the two sliding connection mechanisms are rotatably connected to the two rotating members in one-to-one correspondence.

[0018] Further, two support seats are installed on the side of the second connecting member where the rotating member is installed, and the two rotating members are respectively inserted through the two support seats in one-to-one correspondence.

[0019] Further, the pile driver further includes a column and a hollow drill pipe;

[0020] The column is erected, the sliding connection mechanism is slidably connected to the column, and the sliding connection mechanism can slide along the length direction of the column on the column;

[0021] The drill pipe is vertically installed below the platform, a through hole is provided on the platform, and one end of the drill pipe is rotatably connected in the through hole on the platform.

[0022] Further, the pile driver further includes a grouting pipe, the grouting pipe is located above the platform, and one end of the grouting pipe is communicated with the through hole on the platform.

[0023] Further, a connecting seat is provided on the platform. A channel is provided inside the connecting seat, and the channel communicates with the through hole on the platform.

[0024] One end of the grouting pipe that communicates with the through hole on the platform is installed on the connecting seat and communicates with the through hole on the platform through the channel on the connecting seat.

[0025] Further, a guide rail extending along the length direction of the column is provided on the column, and the sliding connection mechanism is slidably connected to the guide rail.

[0026] The pile driver provided by the present invention can produce the following beneficial effects:

[0027] The pile driver provided by the present invention includes a platform, a rotational connection mechanism, and a sliding connection mechanism. The platform is connected to the rotational connection mechanism, and the platform and the rotational connection mechanism can rotate relative to each other with the first central axis as the rotation axis. The sliding connection mechanism is connected to the rotational connection mechanism, and the sliding connection mechanism and the rotational connection mechanism can rotate relative to each other with the second central axis as the rotation axis. Both the first central axis and the second central axis are parallel to the platform, and the first central axis and the second central axis are perpendicular to each other. The movement directions of the platform relative to the sliding connection mechanism in three-dimensional space in the pile driver are divided into the up-down direction, the left-right direction, and the front-back direction. Considering the lifting direction of the platform in the vertical plane as the up-down movement direction, the first central axis and the second central axis are respectively located in the left-right direction and the front-back direction. Since the platform and the rotational connection mechanism can rotate relative to each other with the first central axis as the rotation axis, and the sliding connection mechanism and the rotational connection mechanism can rotate relative to each other with the second central axis as the rotation axis, the platform can rotate between the front-back direction and the left-right direction relative to the sliding connection mechanism, and the platform has rotational freedom in both the front-back direction and the left-right direction. The platform provided by the present invention is used to be connected to the top of the drill pipe, and the sliding connection mechanism is used to be slidably connected to the column in the pile driver. When using this pile driver, during the process of the drill pipe drilling underground, if the drill pipe tilts relative to the column due to external forces such as the impact force during concrete pumping and the soil pressure, that is, an angle is generated between the drill pipe and the column and a deflection force is generated, the platform can be driven by the tilted drill pipe to rotate between the front-back direction and the left-right direction, thereby eliminating the above-mentioned deflection force and protecting the connection between the platform and the sliding connection mechanism.

[0028] Compared with the prior art, the pile driver provided by the present invention uses the rotational connection mechanism to enable the platform to rotate between the front-back direction and the left-right direction relative to the sliding connection mechanism. Furthermore, when the drill pipe tilts relative to the column, the platform can be driven by the tilted drill pipe to rotate, thereby eliminating the above-mentioned deflection force and protecting the connection between the platform and the sliding connection mechanism. Description of the Drawings

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of a pile driver provided by an embodiment of the present invention;

[0031] Figure 2 For Figure 1 it is an enlarged schematic view of part A in

[0032] Figure 3 For Figure 1 it is a side view of the pile driver in

[0033] Icon: 1 - platform; 10 - connecting seat; 2 - rotating connection mechanism; 20 - bearing; 21 - rotating member; 22 - first connecting member; 23 - second connecting member; 230 - support seat; 3 - sliding connection mechanism; 4 - drill pipe; 5 - column; 50 - guide rail; 6 - grouting pipe. Specific Embodiments

[0034] The following will clearly and completely describe the technical solutions of the present invention in combination with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0035] Embodiment:

[0036] As Figure 1 、 Figure 2 and Figure 3 shown, the pile driver provided in this embodiment includes a platform 1, a rotating connection mechanism 2, and a sliding connection mechanism 3. The platform 1 is connected to the rotating connection mechanism 2, and between the platform 1 and the rotating connection mechanism 2, it can rotate relative to each other with the first central axis as the rotation axis. The sliding connection mechanism 3 is connected to the rotating connection mechanism 2, and between the sliding connection mechanism 3 and the rotating connection mechanism 2, it can rotate relative to each other with the second central axis as the rotation axis. Both the first central axis and the second central axis are parallel to the platform 1, and the first central axis and the second central axis are perpendicular to each other.

[0037] The movement directions of the platform 1 in the three-dimensional space of the pile driver relative to the sliding connection mechanism 3 are divided into the up and down direction ( Figure 1 the direction indicated by the arrow in Figure 2 ), the front and back direction ( Figure 3In three directions (the directions indicated by the arrows), and regarding the lifting direction of the platform 1 in the vertical plane as the up-and-down movement direction, the first central axis and the second central axis are respectively located in the left-right direction and the front-back direction. Since the platform 1 and the rotational connection mechanism 2 can rotate relative to each other with the first central axis as the rotation axis, and the sliding connection mechanism 3 and the rotational connection mechanism 2 can rotate relative to each other with the second central axis as the rotation axis, the platform 1 can rotate between the front-back direction and the left-right direction relative to the sliding connection mechanism 3, and the platform 1 has rotational degrees of freedom in both the front-back direction and the left-right direction.

[0038] The platform 1 in the pile driver provided in this embodiment is used to be vertically installed at the top of the drill rod 4, and the sliding connection mechanism 3 is used to be slidably connected to the column 5 in the pile driver. When using this pile driver, during the process of the drill rod 4 drilling in the ground, if the drill rod 4 tilts relative to the column 5 due to external forces such as the impact force during concrete pumping and the soil pressure, that is, an angle is generated between the drill rod 4 and the column 5 and a deflection force is generated, the platform 1 can be driven by the tilted drill rod 4 to rotate between the front-back direction and the left-right direction, so as to eliminate the above-mentioned deflection force and protect the connection between the platform 1 and the sliding connection mechanism 3.

[0039] Compared with the prior art, the pile driver provided in this embodiment uses the rotational connection mechanism 2 to enable the platform 1 to rotate between the front-back direction and the left-right direction relative to the sliding connection mechanism 3. Furthermore, when the drill rod 4 tilts relative to the column 5, the platform 1 can be driven by the tilted drill rod 4 to rotate, so as to eliminate the above-mentioned deflection force and protect the connection between the platform 1 and the sliding connection mechanism 3.

[0040] It can be seen that the pile driver provided in this embodiment alleviates the technical problem existing in the prior art that during the use of the pile driver, external forces such as the impact force during concrete pumping and the soil pressure will cause the drill rod to tilt, and further cause an angle to be generated between the drill rod and the column and a deflection force to be generated during the lifting and rotation of the drill rod, and the above-mentioned deflection force will act on the connection between the grouting platform and the column, and further cause damage to this connection.

[0041] It should be noted that during the process of the platform 1 being driven by the tilted drill rod 4 to rotate, the degree of tilt of the drill rod 4 is not restricted by the platform 1, but the degree of tilt of the drill rod 4 can be restricted by the soil. The perpendicularity of the drill rod 4 in the soil can be ensured by manual intervention or by the reaction force of the soil on the drill rod 4.

[0042] Such as Figure 2As shown in the figure, the rotating connection mechanism 2 includes a bearing 20, and the central axis of the bearing 20 is the first central axis. One of the inner ring or the outer ring of the bearing 20 is connected to the platform 1, and the other is rotatably connected to the sliding connection mechanism 3 through a cylindrical rotating member 21. The central axis of the rotating member 21 is the second central axis.

[0043] Rolling elements such as balls are installed between the inner ring and the outer ring of the bearing 20, and the inner ring and the outer ring can rotate relative to each other. The bearing 20 is used to realize the rotational connection between the platform 1 and the sliding connection mechanism 3, so that the platform 1 can rotate relative to the sliding connection mechanism 3 with the first central axis as the rotation axis.

[0044] Among them, the cylindrical rotating member 21 can be a connecting member such as a pin shaft, a pin or a bolt. The rotating member 21 is used to enable the platform 1 to rotate relative to the sliding connection mechanism 3 with the second central axis as the rotation axis.

[0045] The following takes the first central axis being in the front-back direction and the second central axis being in the left-right direction as an example to illustrate the turning of the platform 1 relative to the sliding connection mechanism 3:

[0046] Since the central axis of the bearing 20 is the first central axis, and the platform 1 and the sliding connection mechanism 3 are rotatably connected through the bearing 20, under the action of the bearing 20, the platform 1 can rotate relative to the sliding connection mechanism 3 with the first central axis in the front-back direction as the rotation axis. At this time, the rotation direction of the platform 1 relative to the sliding connection mechanism 3 is perpendicular to the first central axis, and the platform 1 can rotate between the left and right directions relative to the sliding connection mechanism 3. The bearing 20 is used to provide the rotational freedom of the platform 1 in the left-right direction.

[0047] Therefore, in the pile driver provided in this embodiment, when the platform 1 deflects relative to the sliding connection mechanism 3 driven by the inclined drill pipe 4, the rotational freedom in the left-right direction provided by the bearing 20 can be used to eliminate the deflection force and torsion force in the left-right direction between the platform 1 and the sliding connection mechanism 3.

[0048] Since the central axis of the rotating member 21 is the second central axis, and the bearing 20 and the sliding connection mechanism 3 are hinged through the rotating member 21, under the action of the rotating member 21, the bearing 20 and the platform 1 can rotate relative to the sliding connection mechanism 3 with the second central axis in the left-right direction as the rotation axis. At this time, the rotation direction of the platform 1 relative to the sliding connection mechanism 3 is perpendicular to the second central axis, and the platform 1 can rotate between the front and back directions relative to the sliding connection mechanism 3. The rotating member 21 is used to provide the rotational freedom of the platform 1 in the front-back direction.

[0049] Therefore, in the pile driver provided in this embodiment, when the platform 1 deflects relative to the sliding connection mechanism 3 driven by the inclined drill pipe 4, the rotational freedom in the front-rear direction provided by the rotating member 21 can be used to eliminate the deflection force in the front-rear direction between the platform 1 and the sliding connection mechanism 3.

[0050] In practical applications, the installation position of the rotating member 21 is not limited and can be selected according to actual needs. For example, the rotating member 21 can be rotatably connected between the platform 1 and the bearing 20, and the bearing 20 and the sliding connection mechanism 3 can be fixedly connected together.

[0051] Such as Figure 2 As shown, the rotational connection mechanism 2 further includes a first connecting member 22. The first connecting member 22 is installed on one side of the outer ring of the bearing 20, and the outer ring of the bearing 20 is connected to the platform 1 through the first connecting member 22.

[0052] The first connecting member 22 can be an annular connecting member such as a flange. The first connecting member 22 is used to connect the platform 1 and the bearing 20 together, improving the installation stability between the bearing 20 and the platform 1.

[0053] Moreover, the first connecting member 22 can detachably connect the bearing 20 and the platform 1 together, facilitating the installation and removal of the bearing 20 from the platform 1 and improving the convenience of use of the bearing 20.

[0054] Such as Figure 2 As shown, the rotational connection mechanism 2 further includes a second connecting member 23. The second connecting member 23 is installed on one side of the inner ring of the bearing 20, and the rotating member 21 is installed on the second connecting member 23. The inner ring of the bearing 20 is rotatably connected to the sliding connection mechanism 3 through the rotating member 21 installed on the second connecting member 23.

[0055] The first connecting member 22 can also be an annular connecting member such as a flange. The second connecting member 23 is used to provide a more stable installation position for the rotating member 21, can stably support the rotating member 21, and further can improve the installation stability between the bearing 20 and the sliding connection mechanism 3.

[0056] The second connecting member 23 can also detachably connect the bearing 20 and the rotating member 21 together, facilitating the installation and removal of the bearing 20 and improving the convenience of use of the bearing 20.

[0057] Such as Figure 3 As shown, both the sliding connection mechanism 3 and the rotating member 21 are two. The two rotating members 21 are installed on the same side of the second connecting member 23, and the two sliding connection mechanisms 3 are rotatably connected to the two rotating members 21 in a one-to-one correspondence.

[0058] Among them, two sliding connection mechanisms 3 are slidably connected to the column 5 in the pile driver in parallel. The two sliding connection mechanisms 3 can improve the installation stability between the column 5 and the platform 1, and can also improve the sliding stability between the sliding connection mechanism 3 and the column 5.

[0059] Corresponding to the two sliding connection mechanisms 3, there are also two rotating members 21. The two rotating members 21 are installed in parallel on the side of the bearing 20 close to the sliding connection mechanism 3 and are connected to the two sliding connection mechanisms 3 in a one-to-one correspondence.

[0060] As Figure 2 shown, two support seats 230 are installed on the side of the second connecting member 23 where the rotating member 21 is installed. The two rotating members 21 are respectively inserted through the two support seats 230 in a one-to-one correspondence.

[0061] The support seat 230 is used to support the rotating member 21, further improving the installation stability between the rotating member 21 and the bearing 20.

[0062] Among them, each support seat 230 can be composed of two parallel ear plates, and the ear plates are vertically fixed on the second connecting member 23. A through hole is provided on the ear plate, and the rotating member 21 is inserted through the through hole on the ear plate.

[0063] Furthermore, two inserting plates can be provided on the side of the sliding connection mechanism 3 close to the bearing 20. The two inserting plates are connected to the two support seats 230 in a one-to-one correspondence. Specifically, a through hole is also provided on the inserting plate. The inserting plate can be inserted between the two ear plates, and the through hole on the inserting plate communicates with the through hole on the ear plate. The rotating member 21 is inserted through the through hole on the inserting plate and the through hole on the ear plate.

[0064] Among them, the sliding connection mechanism 3 can be an existing jaw mechanism. The jaw mechanism is hinged to the above-mentioned rotating member 21 and is slidably connected to the column 5.

[0065] As Figure 1 and Figure 3 shown, the pile driver provided in this embodiment further includes a column 5 and a hollow drill pipe 4. The column 5 is erected, and the sliding connection mechanism 3 is slidably connected to the column 5, and the sliding connection mechanism 3 can slide on the column 5 along the length direction of the column 5. The drill pipe 4 is vertically installed below the platform 1. A through hole is provided on the platform 1, and one end of the drill pipe 4 is rotatably connected to the through hole on the platform 1.

[0066] Among them, the platform 1 is located on a horizontal plane. The platform 1 is perpendicular to the column 5, and the drill pipe 4 vertically installed below the platform 1 is parallel to the column 5. The platform 1 is used to support the drill pipe 4 and to maintain the perpendicularity of the drill pipe 4.

[0067] Furthermore, the end of the drill pipe 4 can be rotatably connected to the through hole on the platform 1 through a bearing 20.

[0068] In this embodiment, the pile driver further includes a rotation drive mechanism and a lifting drive mechanism. Both the rotation drive mechanism and the lifting drive mechanism are connected to the drill pipe 4. The rotation drive mechanism is used to drive the drill pipe 4 to rotate on its own under the platform 1, and the lifting drive mechanism is used to drive the drill pipe 4, the platform 1, and the sliding connection mechanism 3 to lift along the length direction of the column 5.

[0069] As Figure 1 shown, the pile driver provided in this embodiment further includes a grouting pipe 6. The grouting pipe 6 is located above the platform 1, and one end of the grouting pipe 6 is communicated with the through hole on the platform 1.

[0070] Among them, the end of the grouting pipe 6 far from the platform 1 can be communicated with a concrete pump. The grouting pipe 6 is a flow channel for concrete, and it can introduce the concrete into the drill pipe 4. Since the grouting pipe 6 does not need to rotate, the end of the grouting pipe 6 can be fixed in the through hole on the platform 1.

[0071] Furthermore, as Figure 1 shown, a connecting seat 10 is provided on the platform 1. A channel is provided inside the connecting seat 10, and the channel is communicated with the through hole on the platform 1. One end of the grouting pipe 6 communicated with the through hole on the platform 1 is installed on the connecting seat 10 and is communicated with the through hole on the platform 1 through the channel on the connecting seat 10.

[0072] The connecting seat 10 is used to support the grouting pipe 6, improve the use stability of the grouting pipe 6, and can communicate the drill pipe 4 with the grouting pipe 6.

[0073] Furthermore, as Figure 3 shown, a guide rail 50 extending along the length direction of the column 5 is provided on the column 5. The sliding connection mechanism 3 is slidably connected to the guide rail 50.

[0074] The guide rail 50 is used to guide the sliding connection mechanism 3 during the sliding process on the column 5, and thus improve the stability of the lifting process of the sliding connection mechanism 3, the platform 1, and the drill pipe 4.

[0075] Corresponding to the two sliding connection mechanisms 3, two guide rails 50 on the column 5 can also be provided, and the two sliding connection mechanisms 3 are respectively connected to the two guide rails 50 in a one-to-one correspondence.

[0076] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pile driver, characterized in that, the pile driver includes a platform (1), a rotary connection mechanism (2) and a sliding connection mechanism (3); the pile driver further includes a column (5) and a hollow drill pipe (4); the column (5) is erected, the sliding connection mechanism (3) is slidably connected to the column (5), and the sliding connection mechanism (3) can slide along the length direction of the column (5) on the column (5); the drill pipe (4) is vertically installed below the platform (1), a through hole is provided on the platform (1), and one end of the drill pipe (4) is rotatably connected in the through hole on the platform (1); the platform (1) is connected to the rotary connection mechanism (2), and between the platform (1) and the rotary connection mechanism (2), it can rotate relative to each other with the first central axis as the rotation axis; the sliding connection mechanism (3) is connected to the rotary connection mechanism (2), and between the sliding connection mechanism (3) and the rotary connection mechanism (2), it can rotate relative to each other with the second central axis as the rotation axis; the first central axis and the second central axis are both parallel to the platform (1), and the first central axis and the second central axis are perpendicular to each other; the rotary connection mechanism (2) includes a bearing (20), and the central axis of the bearing (20) is the first central axis; one of the inner ring or the outer ring of the bearing (20) is connected to the platform (1), and the other is rotatably connected to the sliding connection mechanism (3) through a cylindrical rotating member (21), and the central axis of the rotating member (21) is the second central axis; the rotating member (21) is a pin shaft, a pin or a bolt.

2. The pile driver according to claim 1, characterized in that, the rotary connection mechanism (2) further includes a first connecting member (22); the first connecting member (22) is installed on one side of the outer ring of the bearing (20), and the outer ring of the bearing (20) is connected to the platform (1) through the first connecting member (22).

3. The pile driver according to claim 2, characterized in that, the rotary connection mechanism (2) further includes a second connecting member (23); the second connecting member (23) is installed on one side of the inner ring of the bearing (20), the rotating member (21) is installed on the second connecting member (23), and the inner ring of the bearing (20) is rotatably connected to the sliding connection mechanism (3) through the rotating member (21) installed on the second connecting member (23).

4. The pile driver according to claim 3, characterized in that, both the sliding connection mechanism (3) and the rotating member (21) are two; the two rotating members (21) are installed on the same side of the second connecting member (23), and the two sliding connection mechanisms (3) are rotatably connected to the two rotating members (21) in one-to-one correspondence.

5. The pile driver according to claim 4, characterized in that, two support seats (230) are installed on the side of the second connecting member (23) where the rotating member (21) is installed, and the two rotating members (21) are respectively inserted through the two support seats (230) in one-to-one correspondence.

6. The pile driver according to claim 5, characterized in that, the pile driver further comprises a grouting pipe (6), the grouting pipe (6) is located above the platform (1), and one end of the grouting pipe (6) is communicated with the through hole on the platform (1).

7. The pile driver according to claim 6, characterized in that, a connecting seat (10) is arranged on the platform (1), a channel is arranged inside the connecting seat (10), and the channel is communicated with the through hole on the platform (1); one end of the grouting pipe (6) communicated with the through hole on the platform (1) is installed on the connecting seat (10) and is communicated with the through hole on the platform (1) through the channel on the connecting seat (10).

8. The pile driver according to claim 1, characterized in that, a guide rail (50) extending along the length direction of the column (5) is arranged on the column (5), and the sliding connection mechanism (3) is slidably connected to the guide rail (50).

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