Low-clearance drill rod connecting type cast-in-place concrete pile machine
By adding a pin-plugging device to the concrete bored pile driver and using a hydraulic cylinder to drive the pin to automatically connect the drill rod and the power head, the problem of manual climbing required to replace the drill rod in the existing technology is solved, which improves work efficiency and reduces safety risks.
Patent Information
- Application Number
- CN202423212911.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing concrete pile drivers require operators to climb up to work when replacing drill rods, resulting in low work efficiency and the risk of falling from height.
The plug-in and pull-out pin device is used to drive the pin through the hydraulic cylinder to realize the automatic connection and separation of the drill pipe and the power head, avoiding manual operation.
It improves work efficiency, avoids the risk of workers falling from height, and simplifies the drill rod replacement process.
Smart Images

Figure CN223459325U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to piling equipment technical field especially relates to a low clearance drill rod formula concrete bored pile machine. BACKGROUND
[0002] The current concrete bored pile machine mainly includes the chassis, the vertical main arm is equipped on the chassis near the edge position, the sliding seat is slidably connected on the main arm, the power head is fixedly connected on the sliding seat, the winch is also equipped on the chassis for driving the sliding seat to move up and down.
[0003] The drill rod used by the concrete bored pile machine has helical blades on the surface, in work, first, the first drill rod (the bottom of the drill rod has a drill bit) is connected with the power head, then the power head drives the drill rod to rotate, and drills downward, when the power head moves to the bottom of the main arm, the power head is disconnected with the drill rod. Then the power head is connected with another drill rod, and then the power head drives the drill rod to rise, connects the bottom of the drill rod with the top of the previous drill rod, and drives the drill rod to rotate to continue the drilling operation. Since the drill rod is connected to drill, the height of the main arm can be reduced, and the vertical space is smaller.
[0004] Currently, the drill rod and the power head are connected by a pin, and every time the drill rod is replaced, the operator needs to pull out the pin to disconnect the power head from the drill rod, then the crane lifts another drill rod above the previous drill rod, and then the power head is connected with the drill rod lifted by the crane and the pin is inserted. Therefore, every time the drill rod is replaced, the operator must climb the work once to insert and pull out the pin to connect the drill rod and the power head. Since the drill rod is very long, it is not only inconvenient to operate and has low work efficiency, but also has the risk of falling from a high altitude.
[0005] The patent with the application number CN202320626726.0 discloses a static pressure pile machine with a three-way side pile mechanism, which includes a machine body, a three-way side pile mechanism, a spiral drill mechanism, and a pile pressing mechanism, a crane, and a cab installed on the machine body. A control system is provided in the cab, which realizes drilling and pile pressing operation in three directions. However, manual operation is still required when connecting the drill rod and the power head, so there is a problem of low work efficiency. The patent with the publication number CN219754460U discloses a rotary drilling rig applied to pile foundation construction, which also needs manual operation to connect the drill rod and the power head. UTILITY MODEL CONTENTS
[0006] The technical problem to be solved by the utility model is to provide a low clearance drill rod formula concrete bored pile machine to solve the problem that the current concrete bored pile machine needs the operator to climb the work when replacing the drill rod, which is low in work efficiency and dangerous.
[0007] The utility model provides to adopt the technical scheme that
[0008] A low-clearance drill rod type concrete pouring pile machine, including chassis, main arm set on the chassis, sliding seat slidingly connected on the main arm and power head fixedly connected on the sliding seat, the output shaft of the lower end of power head is fixedly connected with the connecting sleeve, the connecting sleeve is equipped with the second jack hole for cooperating with the plug of the top of drill rod, the connecting sleeve is fixedly connected with the support plate group, the support plate group is slidingly connected with the bolt, the bolt is perpendicular to the axis of drill rod, the connecting sleeve is equipped with the first jack hole for cooperating with the bolt, the sliding seat is equipped with the drive mechanism for driving the axial movement of bolt, when the plug is inserted into the second jack hole, the first jack hole is aligned with the clamping groove on the plug.
[0009] Further, the support plate group is two and symmetrically arranged along the axis of the connecting sleeve, each support plate group is provided with two support plates, and the two support plates in the same support plate group are symmetrically arranged along the axis of the connecting sleeve, both sides of the connecting sleeve are provided with sliding blocks, the two sliding blocks are arranged between the two support plates of the two support plate groups, the two sliding blocks are slidingly connected with the corresponding support plates, the two sliding blocks are fixedly connected, and the sliding direction of the two sliding blocks is consistent with the axis direction of the first jack hole, and one of the two sliding blocks is fixedly connected with the bolt.
[0010] Further, each support plate is provided with a sliding groove, the sliding groove is consistent with the axial direction of the first jack hole, both ends of the sliding block penetrate through the corresponding sliding hole, and the connecting plate is fixedly connected between the same side of the two sliding blocks.
[0011] Further, the outer end of the sliding groove is open, and the support plate is provided with a blocking plate at the opening of the sliding groove.
[0012] Further, the main arm is provided with a drill rod changing device, the drill rod changing device comprises a swing arm hingedly connected to the main arm, a vertical support column rotatably connected to the other end of the swing arm, an upper turntable fixedly arranged on the upper portion of the support column and a lower turntable fixedly arranged on the lower portion of the support column, the lower turntable is provided with a positioning hole for cooperating with the bottom of the drill rod, the upper turntable is provided with at least one C-shaped gap close to the edge for cooperating with the clamping sleeve on the drill rod, and the gap is in communication with the edge of the upper turntable.
[0013] Further, the swing arm and the main arm are provided with a first hydraulic cylinder, one end of the first hydraulic cylinder is hingedly connected to the main arm, and the other end is hingedly connected to the swing arm.
[0014] Further, the upper surface of the lower turntable is fixedly provided with vertical guide plates around the positioning hole, and the guide plates are inclined outward at the top near the positioning hole.
[0015] Further, the upper surface of the upper turntable is fixedly provided with a C-shaped baffle at the edge of the gap near the center of the upper turntable; the swing arm is provided with two swing arms arranged in an up-down mode, and the upper turntable and the lower turntable are arranged near the corresponding swing arms; a vertical connecting rod is arranged between the two swing arms, the upper end of the connecting rod is fixedly connected with the upper swing arm, and the lower end of the connecting rod is fixedly connected with the lower swing arm.
[0016] Further, a rotating plate is arranged between the swing arm and the lower turntable and is rotationally connected with the lower turntable at one end, and the lower turntable is provided with a second hydraulic cylinder at both sides of the center, one end of one of the second hydraulic cylinders is hingedly connected with the lower turntable, and the other end is hingedly connected with the rotating plate; one end of the other second hydraulic cylinder is hingedly connected with the rotating plate, and the other end is hingedly connected with the swing arm.
[0017] Further, the driving mechanism is one of a hydraulic cylinder, an electric cylinder and a pneumatic cylinder.
[0018] The positive effects of the utility model are as follows:
[0019] The utility model discloses a plug pin device is added on the basis of the existing concrete filling machine, the plug pin device includes a hydraulic cylinder, a connecting sleeve connected with the power head of the concrete filling machine, a support plate group fixedly arranged on the connecting sleeve and two sliding blocks slidingly connected on the support plate group, one of the sliding blocks is equipped with a plug pin, the connecting sleeve is equipped with a first insertion hole and a second insertion hole, after the drill rod top is inserted into the second insertion hole, the hydraulic cylinder pushes one of the sliding blocks, makes the plug pin insert into the first insertion hole, thereby realizes the connection of the connecting sleeve and the drill rod. Similarly, the hydraulic cylinder pushes the other sliding block, can pull out the plug pin from the first insertion hole, realizes the separation of the drill rod and the connecting sleeve. The process of plug pin does not need manual participation, so it is unnecessary for the operating personnel to climb the work, can improve the work efficiency, and simultaneously avoids the risk of personnel falling from a high altitude. ACCURACY OF DRAWINGS
[0020] Figure 1 It is the appearance schematic diagram of the utility model;
[0021] Figure 2 It is Figure 1 The partial close -up view of III part in it;
[0022] Figure 3 It is the side view of plug pin device;
[0023] Figure 4 It is Figure 1 The partial close -up view of IV part in it;
[0024] Figure 5 It isFigure 3 Sectional view of the middle C-C part;
[0025] Figure 6 is a schematic view of the drill rod changing device after removing the helical blade on the surface of the drill rod;
[0026] Figure 7 is Figure 6 is a partial enlarged view of the I part;
[0027] Figure 8 is Figure 6 is a partial enlarged view of the II part;
[0028] Figure 9 is Figure 6 is the A view of
[0029] Figure 10 is a schematic view of the connection between the second hydraulic cylinder and the lower turntable;
[0030] in the figure:
[0031] 1, upper turntable; 2, sleeve; 3, support column; 4, guide plate; 5, lower turntable; 6, swing arm; 7, first hydraulic cylinder; 8, connecting rod; 9, main arm; 10, drill rod; 11, notch; 12, baffle; 13, second hydraulic cylinder; 14, rotating plate; 15, chassis; 16, traveling mechanism; 17, plug-in pin device; 18, power head; 19, sliding seat; 20, goose head; 21, hydraulic cylinder; 22, mounting plate; 23, connecting sleeve; 24, connecting plate; 25, support plate; 26, sliding block; 27, blocking plate; 28, sliding groove; 29, plug; 30, clamping groove; 31, plug pin; 32, first insertion hole; 33, second insertion hole; 34, drill rod changing device. DETAILED DESCRIPTION
[0032] Example 1
[0033] As shown in Figure 1 and Figure 2 , a low-clearance drill rod type concrete pouring pile machine includes a chassis 15, a main arm 9 arranged on the left part of the chassis 15, a sliding seat 19 slidingly connected to the main arm 9, and a power head 18 fixedly connected to the sliding seat 19. The bottom of the chassis 15 is provided with a traveling device 16. The traveling device 16 can be a track type or a hydraulic type or other types, which are all prior art and will not be described here. A winch is arranged on the right part of the chassis 15 to drive the sliding seat 19 to move up and down along the main arm 9. When the sliding seat 19 moves to the top of the main arm 9, the motor of the power head 18 can be higher than the goose head 20 at the top of the main arm 9.
[0034] In combination with Figures 3 to 5As shown, the lower end of the power head 18 is an output shaft, and the main arm 9 is provided with a plug pin device 17. The plug pin device 17 includes a connecting sleeve 23 fixedly connected to the lower end of the output shaft through a flange, the connecting sleeve 23 is provided with a second insertion hole 33 for cooperating with a plug 29 at the top of the drill rod 10, the connecting sleeve 23 is fixedly connected with a support plate group, the support plate group is slidingly connected with a plug pin 31 which is perpendicular to the axis of the drill rod 10, the connecting sleeve 23 is provided with a first insertion hole 32 for cooperating with the plug pin 31, and the sliding seat 19 is provided with a driving mechanism for driving the plug pin 31 to move axially.
[0035] In operation, after the plug 29 at the top of the drill rod 10 is inserted into the second insertion hole 33, the first insertion hole 32 is aligned with the clamping groove 30 on the plug 29, the driving mechanism drives the plug pin 31 to move axially, so that the plug pin 31 is inserted into the first insertion hole 32 and the clamping groove 30, thereby connecting the plug 31 and the connecting sleeve 23. This process does not require manual intervention, so it is not necessary for the operator to work at height, which can improve work efficiency and avoid the risk of falling from a high altitude.
[0036] The top of the plug 29 is hexagonal, and the corresponding part of the second insertion hole 33 is also hexagonal, so as to facilitate the transmission of torque between the drill rods 10 and the alignment of the helical blades on the adjacent drill rods 10.
[0037] Embodiment 2
[0038] The difference between this embodiment and embodiment 1 is that:
[0039] The support plate group is two support plate groups arranged along the axial direction of the plug pin 31, and the two support plate groups are symmetrically arranged left and right around the axis of the connecting sleeve 23. Each support plate group is provided with two support plates 25 which are parallel to each other, and the two support plates 25 in the same support plate group are symmetrically arranged around the axis of the connecting sleeve 23, and the support plates 25 are welded to the connecting sleeve 23. The left and right sides of the connecting sleeve 23 are provided with sliding blocks 26, and the two sliding blocks 26 are arranged between the two support plates 25 of the two support plate groups, respectively. The two sliding blocks 26 are slidingly connected with the corresponding support plates 25, and the two sliding blocks 26 are fixedly connected with each other. The sliding direction of the two sliding blocks 26 is consistent with the axial direction of the first insertion hole 32. The plug pin 31 is two plug pins 31 arranged in parallel, and the first insertion hole 32 on the connecting sleeve 23 is also provided with two first insertion holes 32. The two plug pins 31 are symmetrically arranged around the axis of the connecting sleeve 23, and the left sliding block 26 is fixedly connected with the two plug pins 31.
[0040] Each support plate 25 is provided with a sliding groove 28, which is axially aligned with the first insertion hole 32, and the two ends of the sliding block 26 respectively penetrate the corresponding sliding hole, and the two sliding blocks 26 are fixedly connected by a connecting plate 24 on the same side. The outer end of the sliding groove 28 is open, and the support plate 25 is fixedly connected with a plug plate 27 at the opening of the sliding groove 28 by screws.
[0041] The sliding seat 19 is fixedly connected with a vertical mounting plate 22, and the driving mechanism is a hydraulic cylinder 21 fixedly connected to the mounting plate 22, and the push rod of the hydraulic cylinder 21 faces the sliding block 26.
[0042] The power head 18 drives the connecting sleeve 23 to rotate, and when the left sliding block 26 is aligned with the hydraulic cylinder 21, the hydraulic cylinder 21 acts to push the sliding block 26 to the left, so that the two sliding blocks 26 move to the right together, and the two insertion pins 31 are respectively inserted into the corresponding first insertion hole 32, thereby realizing the connection between the drill rod 10 and the connecting sleeve 23. The power head 18 drives the connecting sleeve 23 to rotate, so that the right sliding block 26 approaches the hydraulic cylinder 21, and when the hydraulic cylinder 21 acts, it drives the two sliding blocks 26 to move simultaneously, and the insertion pin 31 is pulled out of the first insertion hole 32, so that the drill rod 10 can be separated from the connecting sleeve 23.
[0043] In order to ensure the accuracy of the rotating position of the power head 18, a camera can be installed on the mounting plate 22 to monitor the position of the power head 18, so as to ensure that the hydraulic cylinder 21 is aligned with the sliding block 26.
[0044] Embodiment 3
[0045] Combined Figures 6 to 10 As shown, the main arm 9 is provided with a drill rod changing device 34, which includes a swing arm 6 hinged to the main arm 9 of the drilling machine at the right end, a vertical support column 3 rotatably connected to the left end of the swing arm 6, an upper turntable 1 fixedly arranged on the upper part of the support column 3, and a lower turntable 5 fixedly arranged on the lower part of the support column 3. The upper turntable 1 and the lower turntable 5 are both horizontally arranged, and the upper turntable 1 and the lower turntable 5 are both circular. The lower turntable 5 is provided with three positioning holes on the upper surface for cooperating with the bottom of the drill rod 10. The upper turntable 1 is provided with three C-shaped notches 11 near the edge for cooperating with the sleeve 2 on the drill rod 10, adjacent notches 11 are spaced 90 degrees in the circumferential direction, and the three notches 11 correspond one-to-one with the three positioning holes. The notch 11 is in communication with the edge of the upper turntable 1. The inner part of the notch 11 is a circular arc surface, the diameter of the circular arc surface is D, the width of the edge part of the notch 11 close to the upper turntable 1 is b, the diameter of the drill rod 10 is d2, and the diameter of the sleeve 2 is d1, then d2<b<d1<D. The drill rod 10 is not provided with a spiral blade at the position of the sleeve 2 to avoid interference with the upper turntable 1.
[0046] The two swing arms 6 are arranged vertically, and the upper turntable 1 and the lower turntable 5 are arranged close to the corresponding swing arms 6 respectively. A vertical connecting rod 8 is arranged between the two swing arms 6, the upper end of the connecting rod 8 is fixedly connected with the upper swing arm 6, and the lower end of the connecting rod 8 is fixedly connected with the lower swing arm 6.
[0047] A first hydraulic cylinder 7 is arranged between each swing arm 6 and the main arm 9, one end of the first hydraulic cylinder 7 is hingedly connected with the main arm 9, and the other end of the first hydraulic cylinder 7 is hingedly connected with the swing arm 6.
[0048] A swing plate 14 is arranged between the swing arm 6 and the lower turntable 5, one end of the swing plate 14 is rotatably connected with the lower turntable 5, and the other end of the swing plate 14 is rotatably connected with the second hydraulic cylinder 13. The center of the lower turntable 5 is provided with two second hydraulic cylinders 13, one end of one of the second hydraulic cylinders 13 is hingedly connected with the lower turntable 5, and the other end of the second hydraulic cylinder 13 is hingedly connected with the outer end of the swing plate 14; one end of the other second hydraulic cylinder 13 is hingedly connected with the middle of the swing plate 14, and the other end of the second hydraulic cylinder 13 is hingedly connected with the swing arm 6.
[0049] When the power head 18 works, the crane hoists the three drill pipes 10 in sequence, the drill pipe 10 moves downward after entering the gap 11, the bottom of the drill pipe 10 is inserted into the corresponding positioning hole of the lower turntable 5, and the sleeve 2 enters the inner part of the gap 10. Since d1 is greater than b, the drill pipe 10 will not fall down. When it is necessary to replace the drill pipe 10, the first hydraulic cylinder 7 is actuated, the upper turntable 1 and the lower turntable 5 are swung under the drive of the swing arm 6, and move upward above the drill pipe 10 drilled into the ground before, then the two second hydraulic cylinders 13 are actuated, the upper turntable 1 and the lower turntable 5 are rotated, and one of the drill pipes 10 on the upper turntable 1 is located below the power head 18. Then the power head 18 moves downward, the connecting sleeve 23 is connected with the plug 29 at the top of the corresponding drill pipe 10. Then the power head 18 drives the drill pipe 10 to move upward, the sleeve 2 moves upward, the lower end of the drill pipe 10 is pulled out of the corresponding positioning hole, and the sleeve 3 is separated from the gap. Then the first hydraulic cylinder 7 drives the swing arm 6 to swing, and the drill pipe 10 is pulled out of the gap 11. Then the drill pipe 10 is connected with the drill pipe 10 drilled into the ground before, and the drilling operation is continued.
[0050] Since the drill pipe 10 for standby can be placed on the upper turntable 1 and the lower turntable 5 during the drilling operation, the drill pipe 10 to be replaced is aligned with the power head 18 through the swing of the swing arm 6 and the rotation of the upper turntable 1 and the lower turntable 5, so that the replacement time of the drill pipe 10 can be reduced, and the working efficiency of the drilling machine can be improved.
[0051] The upper surface of the lower turntable 5 is fixedly provided with ten vertical triangular guide plates 4 around the positioning holes, and the side close to the positioning hole of the guide plate 4 is a top outwardly inclined slope.
[0052] When the lower end of the drill pipe 10 moves downward, the lower end of the drill pipe 10 is easily inserted into the positioning hole under the action of the guide plate 4.
[0053] The upper surface of the upper turntable 1 is fixedly provided with a C-shaped baffle 12 at the edge of the gap 11 close to the center of the upper turntable 1, and the shape of the baffle 10 is consistent with the shape of the inner part of the gap 11.
[0054] The above-described embodiments are more detailed and specific, express the preferred embodiments of the present application, and are only used to illustrate the technical ideas and characteristics of the present application. The purpose is to enable those skilled in the art to understand the content of the present application and implement it accordingly, but it is not limited to the present application, and the patent range of the present application cannot be limited by the present embodiment. That is, any equivalent changes or modifications made in the spirit disclosed by the present application, without departing from the structure of the present application, the internal improvement of the system and the change between the subsystems, and the transformation, etc., are still within the patent range of the present application.
Claims
1. A low headroom drill rod type concrete filling pile machine, characterized by, The utility model relates to a drilling machine, including chassis (15), set up main arm (9) on chassis (15), slide connection in main arm (9) on slide (19) and fixed connection in slide (19) on power head (18), the output shaft of lower end of power head (18) is fixedly connected with the connecting sleeve (23), the second jack (33) for and the plug (29) of drill rod (10) top cooperation is equipped with in connecting sleeve (23), the support plate group is fixedly connected with outside connecting sleeve (23), the bolt (31) is slidably connected on the support plate group, the bolt (31) is perpendicular with the axis of drill rod (10), the first jack (32) for and the bolt (31) cooperation is equipped with on connecting sleeve (23), the drive mechanism for driving the bolt (31) axial movement is equipped with on slide (19), when the plug (29) is inserted into the second jack (33), the first jack (32) with the card slot (30) on plug (29) is in alignment.
2. A low headroom drill rod type concrete pile machine according to claim 1, characterized in that, The support plate group is two and is arranged along the bolt (31) axial direction, and the two support plate groups are symmetrically arranged with the axis of the connecting sleeve (23) as the center, each support plate group is provided with two support plates (25), the two support plates (25) in the same support plate group are symmetrically arranged with the axis of the connecting sleeve (23) as the center, both sides of the connecting sleeve (23) are provided with sliding blocks (26), the two sliding blocks (26) are arranged between the two support plates (25) of the two support plate groups respectively, the two sliding blocks (26) are slidably connected with the corresponding support plates (25) respectively, the two sliding blocks (26) are fixedly connected, and the sliding direction of the two sliding blocks (26) is consistent with the axis direction of the first jack (32), wherein one of the sliding blocks (26) is fixedly connected with the bolt (31).
3. A low headroom drill rod type concrete pile machine according to claim 2, characterized in that, Each support plate (25) is provided with a sliding groove (28), the sliding groove (28) is consistent with the axial direction of the first jack (32), and the two ends of the sliding block (26) penetrate the corresponding sliding holes respectively.
4. A low headroom drill rod type concrete pile machine according to claim 3, characterized in that, The outer end of the sliding groove (28) is opened, and the support plate (25) is provided with a blocking plate (27) at the opening of the sliding groove (28).
5. The low-clearance drill rod type concrete casting pile machine according to claim 1, characterized in that, The main arm (9) is provided with a drill rod changing device (34), the drill rod changing device (34) comprises a swing arm (6) hinged to the main arm (9), a vertical support column (3) rotatably connected to the other end of the swing arm (6), an upper turntable (1) fixedly arranged on the upper part of the support column (3), and a lower turntable (5) fixedly arranged on the lower part of the support column (3); the lower turntable (5) is provided with a positioning hole for cooperating with the bottom of the drill rod (10), the upper turntable (1) is provided with at least one C-shaped notch (11) near the edge for cooperating with the sleeve (2) on the drill rod (10), the notch (11) is communicated with the edge of the upper turntable (1); the inner part of the notch (11) is a circular arc surface, the diameter of the circular arc surface is D, the width of the notch (11) near the edge of the upper turntable (1) is b, the diameter of the drill rod (10) is d2, and the diameter of the sleeve (2) is d1, so that d2<b<d1<D is satisfied.
6. A low headroom drill rod type concrete pile machine according to claim 5, characterized in that, The first hydraulic cylinder (7) is hinged to the main arm (9) at one end and to the swing arm (6) at the other end.
7. A low headroom drill rod type concrete pile machine according to claim 5, wherein The upper surface of the lower turntable (5) is fixedly provided with a vertical guide plate (4) around the positioning hole, and the side of the guide plate (4) near the positioning hole is a top outwardly inclined slope.
8. A low headroom drill rod type concrete pile machine according to claim 5, characterized in that, The upper surface of the upper turntable (1) is fixedly provided with a C-shaped baffle (12) at the edge near the center of the notch (11); the swing arm (6) is arranged in two parts, the upper turntable (1) and the lower turntable (5) are respectively arranged near the corresponding swing arm (6); a vertical connecting rod (8) is arranged between the two swing arms (6), the upper end of the connecting rod (8) is fixedly connected to the upper swing arm (6), and the lower end of the connecting rod (8) is fixedly connected to the lower swing arm (6).
9. A low headroom drill rod type concrete pile machine according to claim 5, characterized in that, The swing arm (6) and the lower turntable (5) are provided with a rotating plate (14) rotatably connected to the lower turntable (5) at one end, the lower turntable (5) is provided with a second hydraulic cylinder (13) on both sides of the center, one end of one of the second hydraulic cylinders (13) is hinged to the lower turntable (5), and the other end is hinged to the rotating plate (14); the other end of the other second hydraulic cylinder (13) is hinged to the rotating plate (14), and the other end is hinged to the swing arm (6).
10. The low-clearance drill rod type concrete casting pile machine according to claim 1, characterized in that, The driving mechanism is one of a hydraulic cylinder (21), an electric cylinder and a pneumatic cylinder.
Citation Information
Patent Citations
Static pressure pile machine with three-way side pile mechanism
CN219450724U
Rotary drilling rig applied to pile foundation construction
CN219754460U