CN110158591B - Pile hammer assembly and pile driver with pile hammer assembly - Google Patents
Pile hammer assembly and pile driver with pile hammer assembly Download PDFInfo
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- CN110158591B CN110158591B CN201810144726.0A CN201810144726A CN110158591B CN 110158591 B CN110158591 B CN 110158591B CN 201810144726 A CN201810144726 A CN 201810144726A CN 110158591 B CN110158591 B CN 110158591B
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- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
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- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to a pile hammer assembly, which comprises a pile clamping device (1) for clamping precast piles and a pile sinking device (2) directly or indirectly acting on the pile clamping device (1), and is characterized in that: the pile clamping device is characterized by further comprising a telescopic component (3) used for driving the pile clamping device (1) to approach or depart from the precast pile along the axial direction of the precast pile to be clamped and a pitching angle adjusting device (4) used for adjusting the pitching angle of the pile clamping device (1), wherein the telescopic component (3) and the pitching angle adjusting device (4) are arranged above the pile clamping device (1). The pile clamping device of the pile hammer assembly is telescopic and adjustable in pitching angle, and the pile hammer assembly can clamp precast piles more conveniently and rapidly. The invention also relates to a pile driver with the pile hammer assembly.
Description
Technical Field
The invention belongs to the technical field of piling machinery, and particularly relates to a pile hammer assembly for piling construction and a pile driver with the pile hammer assembly.
Background
Pile drivers are widely used in construction and can drive precast piles into strata to realize the reinforcement of foundations, roadbeds, dams and the like. The piling method can be divided into the following steps: 1. pile drivers, such as drop hammer drivers, air hammer drivers, hydraulic hammer drivers, etc., which utilize impact forces to penetrate piles into formations, have the disadvantage of loud noise during pile driving; 2. the pile hammer type pile driver is characterized in that a pile body is vibrated by high-frequency vibration at high acceleration, vertical vibration generated by machinery is transmitted to the pile body, soil around the pile is changed due to vibration, strength is reduced, soil around the pile body is liquefied, a pile hammer component in the pile driver is basically combined with a digger, friction resistance between the pile side and the soil is reduced, and then the pile is sunk into the soil by the downward pressure of the digger, the vibrating sinking hammer and the dead weight of the pile body. When pile is pulled out, under the condition of vibrating at one side, the pile is pulled up by the lifting force of the excavator, and the pile driver has the advantage of low noise.
For example, a chinese patent No. ZL201020573879.6 (bulletin No. CN 201817812U) discloses a vibratory pile hammer driving machine, which is generally used to lift a pile body to be driven to a pile clamping position of a pile hammer by a crane, and then to hold the pile body tightly by the pile clamping device, thereby achieving the driving purpose. However, in the above process, in order to enable the pile body to be held reliably by the clamping end, it is generally necessary to constantly operate the crane, and pull the pile to a predetermined position after a long distance on the ground, so that the pile clamp can clamp the head of the pile, and the pile body can be accurately aligned with the clamping end. The problems are that: in addition, after the pile body is lifted by the crane, the pile body top end on the crane and the pile body clamping end of the pile driver have position deviation, and the pile body is usually at a certain angle with the ground, so that certain difficulty is brought to accurate alignment between the vertically downward arranged clamping end and the pile body, and the pile clamping convenience is influenced.
In view of the above, the existing pile hammer assembly can be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pile hammer assembly with a telescopic pile clamping device and an adjustable pitching angle of the pile clamping device, which can clamp precast piles more conveniently and rapidly.
The technical scheme adopted for solving the technical problems is as follows: a pile hammer assembly comprising a pile clamp for clamping a precast pile and a pile sinking device for direct or indirect mounting above the pile clamp, characterized in that: the device also comprises a telescopic component for driving the pile clamping device to be sleeved in or withdrawn from the pile to be precast and a pitching angle adjusting device for adjusting the pitching angle of the pile clamping device so as to align the pile head of the precast pile, the telescopic component and the pitching angle adjusting device are arranged above the pile clamping device.
As the preferred scheme, above-mentioned pile sinking device is the vibrating device who is used for exerting the exciting force, adopts the vibration mode to carry out the pile sinking, has the advantage that the noise is little, also more does benefit to each component part of rational arrangement in addition, and flexible subassembly is located between pile sinking device and the top of pile clamp, and flexible subassembly directly drives the pile clamp and is moved towards the direction that is close to or keeps away from pile sinking device, pitch angle adjusting device acts on pile sinking device to drive pile clamp, flexible subassembly and realize pitch angle's regulation along with pile sinking device. If the pile sinking structure is hit by a heavy hammer, the pile sinking part is required to be completely arranged above the telescopic component and the pitching angle adjusting device, enough operation space is adopted, the pitching angle adjusting device is provided with an angle deflection device, if the pile sinking structure is hit by the heavy hammer, the pitching angle adjusting device is easy to damage, and the pile sinking device is adopted, so that the telescopic component is arranged between the vibration device and the pile clamping device, and the vibration device is not easy to damage the telescopic component because the telescopic direction of the telescopic component moves along the axial direction of the pile.
Of course, it is also possible to: the telescopic assembly is arranged between the pile sinking device and the top of the pile clamping device, drives the pile clamping device to move towards the direction close to or far away from the pile head of the precast pile, and the pitching angle adjusting device is connected with the pile sinking device or the telescopic assembly to drive the pile clamping device, the telescopic assembly and the pile sinking device to realize pitching angle adjustment together. It is also possible that: the pitching angle adjusting device is connected with the pile sinking device so as to drive the pile clamping device and the telescopic component to realize pitching angle adjustment along with the pile sinking device.
As an optimal scheme, the telescopic assembly comprises a first driving device, an outer sleeve and an inner sleeve which are mutually sheathed in a sliding way, wherein the outer sleeve is fixed at the bottom of the pile sinking device, the inner sleeve is fixed at the top of the pile clamping device, and the first driving device is used for driving the inner sleeve to axially slide relative to the outer sleeve. The outer sleeve and the inner sleeve can respectively and correspondingly increase the contact area between the pile sinking device and the pile clamping device, so that the pile clamping device is ensured to stably displace relative to the pile sinking device.
In order to ensure that the inner sleeve and the outer sleeve only slide relatively along the axial direction and prevent the inner sleeve and the outer sleeve from rotating relatively, a rib groove guide structure arranged along the axial direction is arranged between the outer peripheral wall of the inner sleeve and the inner peripheral wall of the outer sleeve, a guide groove in the rib groove guide structure is arranged on one of the outer peripheral wall of the inner sleeve and the inner peripheral wall of the outer sleeve, and a guide rib in the rib groove guide structure is arranged on the other of the outer peripheral wall of the inner sleeve and the inner peripheral wall of the outer sleeve.
In order to prevent the inner sleeve from being separated from the outer sleeve downwards, an axial limiting structure for preventing the inner sleeve from being separated from the outer sleeve downwards is arranged between the inner sleeve and the outer sleeve.
The axial limiting structure comprises a first stop block arranged on the peripheral wall of the inner sleeve and a second stop block arranged on the inner peripheral wall of the outer sleeve; the inner sleeve extends out to a state that the first stop block is contacted with the second stop block to be limited. The axial limiting structure is a specific structure, and other existing limiting modes can be adopted.
The first driving device is a telescopic oil cylinder or an air cylinder, the cylinder body of the telescopic oil cylinder or the air cylinder is hinged in the outer sleeve, and the piston rod of the telescopic oil cylinder or the air cylinder is hinged in the inner sleeve. The oil cylinder is used as a driving device, so that the device has the advantages of large driving force, low cost and contribution to automatic control.
Preferably, the pitching angle adjusting device comprises a connecting seat and a second driving device, wherein the connecting seat is used for being installed on the pile driver frame, the pile sinking device is rotatably installed on the connecting seat, and the second driving device is in transmission connection with the pile sinking device so as to drive the pile sinking device to swing up and down relative to the connecting seat. The connecting seat provides reasonable installation positions for the pile sinking device and the second driving device, and the pitching angle adjusting device has few parts.
As a specific installation scheme, the connecting seat is provided with two installation walls which extend downwards and are arranged at intervals left and right, the pile sinking device is pivoted between the two installation walls, and the second driving device is connected with the pivot of the pile sinking device in a transmission manner so as to be used for driving the pile sinking device to swing up and down relative to the connecting seat. Thus, the connecting seat is provided with the U-shaped top supporting part, each side wall of the top supporting part is hinged with one end of the corresponding swing cylinder or air cylinder, and the U-shaped opening of the top supporting part can enable the pile sinking device to have a larger swing angle.
In order to stably drive the pile sinking device to swing, two second driving devices are arranged, two sides of the pile sinking device are respectively pivoted on corresponding mounting walls through a pivot, the outer end of each pivot penetrates through the mounting wall on the corresponding side of the connecting seat, and the two second driving devices are respectively connected with the exposed pivot to drive the pivot to rotate around the axis of the second driving device. The pile sinking device is driven to rotate by the rotation of the pivot.
Alternatively, the pivot is fixed with a connecting arm extending radially at a part of the mounting wall, the second driving device is a swinging oil cylinder or an air cylinder, one end of the swinging oil cylinder or the air cylinder is hinged with the top supporting part of the connecting seat, and the other end of the swinging oil cylinder or the air cylinder is hinged with the connecting arm. The oil cylinder is used as a driving device, so that the device has the advantages of large driving force, low cost and contribution to automatic control. Of course, the pile sinking device can be driven to swing by adopting a motor and gear transmission structure.
Because the loop wheel machine is with the precast pile under the state of an angle from the bottom surface, the axis of precast pile and the axis of clamp stake ware are not in the coplanar, just need the loop wheel machine to hang precast pile to be in a plane state with the axis of clamp stake ware at this moment, precast pile drags the line distance to become long in the ground when can, easily causes the harm to precast pile, because precast pile is heavier, and crane hangs the operation of stake more complicacy, and consuming time, for further reducing the trawling to precast pile, further improvement: the pile clamping device also comprises a rotary assembly used for driving the pile clamping device to rotate around the axis of the pile clamping device; the rotary assembly comprises a rotary support, a rotary body and a third driving device, wherein the rotary body is installed on the rotary support through a bearing, the rotary body is fixedly connected above the pitching angle adjusting device, and the third driving device is used for driving the rotary body to rotate around the axis of the rotary body. The pile clamping device can be driven to rotate around the axis of the pile clamping device through the rotary assembly, the axis of the pile clamping device is rotated to be in the same plane with the axis of the precast pile, the precast pile does not need to be dragged for alignment, the telescopic assembly and the pitching angle adjusting device are combined, multi-angle and all-directional adjustment of the pile clamping device is realized, and then various pose adjustments of the pile hammer assembly in a space state are realized, so that the pile clamping device can accurately align according to the position and the angle of the precast pile to be clamped, clamp the precast pile, the defect that the operation difficulty is large and the working strength is high due to the fact that the precast pile is dragged and aligned by a crane is well overcome, the clamping process of a pile body is greatly simplified, and the clamping efficiency is improved. The rotary assembly has the advantage of convenience for pile extension, and the precast pile needs to be connected by adopting a special structure, so that the precast pile has certain position relation requirements on the end surfaces of the upper pile and the lower pile, and when the precast pile is connected, the precast pile needs to be rotated through the rotary assembly, so that the precast pile and the precast pile are aligned.
Because the rotation angle needs to be precisely controlled, the third driving device comprises a driving motor arranged on the rotation support, a driving gear is arranged at the output end of the driving motor, and an outer gear ring part which is used for being meshed with the driving gear is arranged at the upper part of the rotation body.
Alternatively, the pile clamping device comprises a shell, the shell is provided with a pile clamping hole with a downward opening, two or more clamping blocks which extend into the pile clamping hole and can slide radially are arranged in the shell, the clamping blocks are driven by a fourth driving device to move back and forth along the radial direction, and the radial reciprocating movement of the clamping blocks can clamp or loosen the end parts of the precast piles extending into the pile clamping hole. Whether the precast pile is clamped or not is determined by the radial sliding of the clamping blocks, so that the precast pile is fixed on the pile clamping device.
Alternatively, the fourth driving device includes a pushing block driven by a clamping cylinder or an air cylinder to move up and down, the clamping cylinder or the air cylinder is fixed on the top surface of the housing, the pushing block has a first inclined plane and is located at the rear of the clamping block, the clamping block has a second inclined plane slidingly matched with the first inclined plane, a T-shaped rib groove guiding and matching structure is arranged between the first inclined plane and the second inclined plane, a T-shaped groove in the T-shaped rib groove guiding and matching structure is arranged on one of the first inclined plane and the second inclined plane, and a T-shaped block in the T-shaped rib groove guiding and matching structure is arranged on the other of the first inclined plane and the second inclined plane. Other structural forms, such as dovetail shape or L shape, can be adopted, and the clamping block can move along with the pushing block only through the clamping block and the clamping groove in the structural form.
The clamping force is increased for the contact area between the support clamping block and the precast pile, and the outer end surface of the clamping block is provided with two contact surfaces which are mutually at a certain angle and are used for being contacted with the peripheral surface of the precast pile.
Preferably, the number of the clamping blocks is three, and the three clamping blocks are uniformly arranged at intervals along the circumferential direction of the pile clamping hole.
Still further improve, still include the horizontal position adjusting device that is used for driving the pile clamp and removes in the horizontal plane, horizontal position adjusting device set up in pitch angle adjusting device's top. Through the removal regulation of horizontal position adjusting device, can finely tune the position of pile clamp in the horizontal plane, ensure that pile driving position is accurate.
The horizontal position adjusting device comprises a sliding platform, a first trolley moving on the sliding platform and a second trolley moving on the first trolley, wherein the moving directions of the first trolley and the second trolley are staggered; the pitching angle adjusting device is connected below the second trolley and synchronously moves along with the second trolley.
The sliding platform is provided with a first rail, the first trolley can move on the first rail, the first trolley is provided with a second rail, and the second trolley can move on the second rail; the first track and the second track are perpendicular to each other.
The second technical problem to be solved by the invention is to provide a pile driver for conveniently and quickly clamping precast piles.
A pile driver comprising a mast, characterized in that: the pile hammer assembly also comprises the pile hammer assembly; the pitching angle adjusting device of the pile hammer assembly is connected to the upright post in a sliding mode.
A pile driver comprising a mast, characterized in that: the pile hammer assembly is characterized by also comprising the pile hammer assembly; the horizontal position adjusting device is in sliding connection with the upright post.
Compared with the prior art, the invention has the advantages that: when the pile hammer assembly works, firstly, the pile clamping device is moved to the position which is basically the same as the height position of the precast pile to be clasped, and the pile clamping device is driven to swing up and down by a certain angle by utilizing the pitching angle adjusting device, so that the included angle formed by the pile clamping device and the horizontal plane is consistent with the inclination angle of the pile body to be clasped on the ground (namely, the central axis direction of the pile clamping device is basically consistent with the central axis direction of the precast pile); the pile clamp can then be advanced close to the end of the precast pile by means of an extension or retraction movement of the telescopic assembly. When the pile clamping device moves until the precast pile end stretches into the pile clamping device, the pile clamping device base holds the precast pile end tightly. Then the whole pile hammer assembly moves upwards, after the precast pile is suspended, the pitching angle adjusting device continues to act to drive the pile clamping device to swing downwards so that the axis of the precast pile is vertical to the ground, after the precast pile is placed at a preset position, the pile clamping device is driven to release the precast pile, and then the process is repeated so as to clamp the pile body to be clamped next. The pile clamping device in the pile hammer assembly not only can adjust the pitching angle, but also can stretch out and draw back along the axial direction of the precast pile to be clamped, so that the pile clamping device has stronger freedom of movement, and the pile clamping device is convenient to align and clamp the pile on the premise of reducing the towing precast pile of the crane, is reliable in alignment, and has important significance for pile foundation construction in the building industry.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a pile hammer assembly, wherein the arrow direction indicates the possible movement direction of the corresponding assembly in this state;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic perspective view of a second cart mounted on a first cart in an embodiment of a pile hammer assembly;
FIG. 4 is a schematic perspective view of a second embodiment of a pile hammer assembly (pile gripper up-swinging state);
FIG. 5 is an enlarged view of a portion of FIG. 4 at B;
FIG. 6 is a schematic view of a partial perspective view of an embodiment of a pile hammer assembly (including a pile sinking device and a telescoping assembly);
FIG. 7 is a schematic cross-sectional view of the telescoping assembly in a retracted state in an embodiment of the pile hammer assembly;
FIG. 8 is a schematic cross-sectional view of a jack assembly in an extended state in an embodiment of the jack assembly;
FIG. 9 is a schematic perspective view of a pile gripper in an embodiment of a pile hammer assembly;
FIG. 10 is a partial cross-sectional view of a pile gripper in an embodiment of a pile hammer assembly;
FIG. 11 is a C-C cross-sectional view of FIG. 10;
FIG. 12 is a schematic perspective view of the connection between the pusher and the contact block in an embodiment of the pile hammer assembly;
fig. 13 is a schematic perspective view of an embodiment of a pile driver.
The reference numerals are as follows: 1-pile clamping device; 11-a housing; 111-pile clamping holes; 12-clamping blocks; 121-a second bevel; 122-contact surface; 13-fourth driving means; 131-clamping oil cylinders; 132-pushing block; 133-a first bevel; 14 a-T-shaped groove; 14 b-T-shaped blocks; 2-pile sinking device; 21-a pivot; 22-connecting arms; 3-telescoping assembly; 31-an outer sleeve; 311-a second stop; 32-an inner sleeve; 33-first drive means; 321-a first stop; 4-pitch angle adjusting means; 41-connecting seats; 411-mounting walls; 42-a second drive; a 5-turn assembly; 51-a swivel support; 52-a revolving body; 53-third drive means; 531-driving motor; 532—a drive gear; 533-outer ring gear portion; 6-a horizontal position adjusting device; 61-a sliding platform; 611-first track; 62-a first trolley; 621-a second track; 63-a second trolley; 7-stand columns; 8-pulley block.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1-12, is a preferred embodiment of the pile hammer assembly of the present invention.
A pile hammer assembly comprises a pile clamping device 1 for clamping precast piles and a pile sinking device 2 directly or indirectly acting on the pile clamping device 1.
As shown in fig. 9 to 12, the pile gripper 1 comprises a housing 11 with a pile gripping hole 111 with a downward opening, a plurality of gripping blocks 12 which extend into the pile gripping hole 111 and can slide radially are arranged in the housing 11, three gripping blocks 12 in this embodiment are arranged at equal intervals along the inner peripheral surface of the pile gripping hole 111. Each of the clamping blocks 12 is driven by the fourth driving means 13 to reciprocate in the radial direction, and the radial reciprocation of the clamping blocks 12 clamps or unclamps the end of the precast pile inserted into the pile clamping hole 111. The fourth driving device 13 includes a push block 132 driven by a clamping cylinder 131 or an air cylinder to move up and down, the clamping cylinder 131 or the air cylinder is fixed on the top surface of the housing 11, the push block 132 has a first inclined surface 133 and is located at the rear of the clamping block 12, the clamping block 12 has a second inclined surface 121 slidingly matched with the first inclined surface 133, a T-shaped rib groove guiding and matching structure is arranged between the first inclined surface 133 and the second inclined surface 121, a T-shaped groove 14a in the T-shaped rib groove guiding and matching structure is arranged on one of the first inclined surface 133 and the second inclined surface 121, and a T-shaped block 14b in the T-shaped rib groove guiding and matching structure is arranged on the other of the first inclined surface 133 and the second inclined surface 121. The outer end surface of the clamping block 12 has two contact surfaces 122 at an angle to each other, and the contact surfaces 122 are adapted to contact the circumferential surface of the precast pile. The adoption of the T-shaped rib groove guide matching structure can have a left-right constraint effect on the push block 132 and the clamping block 12, the accuracy of relative movement of the push block 132 and the clamping block 12 is guaranteed, in addition, the T-shaped rib groove guide matching structure can enable upward sliding of the push block 132 to actively drive radial movement of the clamping block 12, the linkage is good, and when the push block 132 moves upwards, the T-shaped rib groove guide matching structure can enable the push block 132 to radially tighten the clamping block 12, so that the clamping block is convenient to reset.
The main improvement points of the invention are as follows: the pile hammer assembly further comprises a telescopic assembly 3, a pitching angle adjusting device 4, a rotary assembly 5 and a horizontal position adjusting device 6, wherein the telescopic assembly 3 is used for driving the pile clamping device 1 to approach or separate from the precast pile along the axial direction of the precast pile to be clamped, the pitching angle adjusting device 4 is used for adjusting the pitching angle of the pile clamping device 1, the rotary assembly 5 is used for driving the pile clamping device 1 to rotate around the axial line of the pile clamping device, the horizontal position adjusting device 6 is used for driving the pile clamping device 1 to move in a horizontal plane, and the telescopic assembly 3, the pitching angle adjusting device 4, the rotary assembly 5 and the horizontal position adjusting device 6 are sequentially arranged above the pile clamping device 1 from bottom to top.
The pile sinking device 2 in this embodiment is a vibration device for applying exciting force, the telescopic component 3 is arranged between the pile sinking device 2 and the top of the pile clamping device 1, the telescopic component 3 directly drives the pile clamping device 1 to move towards the direction close to or far away from the pile sinking device 2, and the pitching angle adjusting device acts on the pile sinking device 2 so as to drive the pile clamping device 1 and the telescopic component 3 to realize pitching angle adjustment along with the pile sinking device 2.
Specifically, as shown in fig. 6 to 8, the telescopic assembly 3 includes a first driving device 33, an outer sleeve 31 and an inner sleeve 32 that are slidably sleeved with each other, the outer sleeve 31 is fixed at the bottom of the pile sinking device 2, the inner sleeve 32 is fixed at the top of the pile gripper 1, and the first driving device 33 is used for driving the inner sleeve 32 to axially slide relative to the outer sleeve 31. The first driving device 33 is a telescopic cylinder or air cylinder, the cylinder body of the telescopic cylinder or air cylinder is hinged in the outer sleeve 31, and the piston rod of the telescopic cylinder or air cylinder is hinged in the inner sleeve 32.
A rib groove guide structure is provided between the outer circumferential wall of the inner sleeve 32 and the inner circumferential wall of the outer sleeve 31, the guide groove in the rib groove guide structure is provided on one of the outer circumferential wall of the inner sleeve 32 and the inner circumferential wall of the outer sleeve 31, and the guide rib in the rib groove guide structure is provided on the other of the outer circumferential wall of the inner sleeve 32 and the inner circumferential wall of the outer sleeve 31, and the rib groove guide structure is not shown in the drawing. An axial limit structure is provided between the inner sleeve 32 and the outer sleeve 31 to prevent the inner sleeve 32 from being separated from the outer sleeve 31 downward. The axial limit structure comprises a first stop 321 arranged on the outer peripheral wall of the inner sleeve 32 and a second stop 311 arranged on the inner peripheral wall of the outer sleeve 31; the inner sleeve 32 is extended until the first stopper 321 contacts the second stopper 311, and the inner sleeve 32 cannot be moved down any further.
Specifically, as shown in fig. 4 and 5, the pitch angle adjusting device 4 includes a connecting seat 41 and a second driving device 42, where the second driving device 42 is used to drive the pile sinking device 2 to swing up and down relative to the connecting seat 41. The connecting seat 41 is provided with two mounting walls 411 which extend downwards and are arranged at left and right intervals, two sides of the pile sinking device 2 are pivoted between the two mounting walls 411 through pivots 21, the pivots 21 are fixed at two sides of the pile sinking device 2, two second driving devices 42 are arranged, the outer ends of the pivots 21 penetrate through the mounting walls 411 at the corresponding sides of the connecting seat 41, and the two second driving devices 42 are respectively connected with the exposed pivots 21 to drive the pivots 21 to rotate around the axes of the two second driving devices. The pivot 21 of the mounting wall 411 of the connecting seat 41 is fixedly provided with a connecting arm 22 extending radially, the second driving device 42 is a swinging oil cylinder or air cylinder, the cylinder body end of the swinging oil cylinder or air cylinder is hinged with the connecting seat 31, and the piston rod end of the swinging oil cylinder or air cylinder is hinged with the connecting arm 22.
Specifically, as shown in fig. 1 and 2, the revolving assembly 5 includes a revolving support 51, a revolving body 52, and a third driving device 53, the revolving body 52 is mounted on the revolving support 51 through a bearing, meanwhile, the revolving body 52 is fixedly connected above the pitch angle adjusting device 4, and the third driving device 53 is used for driving the revolving body 52 to rotate around its own axis. The third driving device 53 includes a driving motor 531 mounted on the swivel support 51, a driving gear 532 is mounted on an output end of the driving motor 531, and an outer gear ring 533 for meshing with the driving gear 532 is provided on an upper portion of the swivel body 52.
Specifically, as shown in fig. 1 to 3, the horizontal position adjusting device 6 includes a sliding platform 61, a first trolley 62 moving on the sliding platform 61 and a second trolley 63 moving on the first trolley 62, where the sliding platform 61 is a frame structure formed by steel beams, and the moving directions of the first trolley 62 and the second trolley 63 are staggered (e.g. crisscrossed). The top of the swivel support 51 is connected to the bottom of the second trolley 63 and moves synchronously with the second trolley 63. The sliding platform 61 is provided with a first rail 611, the first trolley 62 is mounted on the first rail 611 by rollers to be movable, the first trolley 62 is provided with a second rail 621, and the second trolley 63 is mounted on the second rail 621 by rollers to be movable; the first rail 611 and the second rail 621 are perpendicular to each other. The first carriage 62 is driven to translate on the first rail 611 by a first translation cylinder 64, and the second carriage 63 is driven to translate on the second rail 621 by a second translation cylinder 65.
The working principle and the working process of the pile hammer assembly are as follows:
When the pile hammer assembly works, firstly, the pile clamping device 1 is moved to the position which is approximately the same as the height position of a precast pile to be held tightly, and when the pile clamping device 1 is driven to rotate around the axis of the pile clamping device 1 by the rotary assembly 5, the axis of a pile clamping hole 111 in the pile clamping device 1 and the axis of the precast pile are positioned in the same plane; driving the pile clamping device 1 to swing up and down by a certain angle by utilizing the pitching angle adjusting device 4 so as to enable an included angle formed by the pile clamping device 1 and a horizontal plane to be consistent with an inclination angle of a pile body to be held tightly on the ground (namely, the central axis direction of the pile clamping device 1 is basically consistent with the central axis direction of a precast pile); the pile clamp 1 can then be advanced close to the end of the precast pile by means of an extension or retraction movement of the telescopic assembly 3.
When the pile clamping device 1 moves until the precast pile end stretches into the pile clamping device 1, the precast pile end is held tightly by the clamping structure in the pile clamping device 1. And then the whole pile hammer assembly moves upwards, and after the precast pile is suspended, the pitching angle adjusting device 4 continuously acts to drive the pile clamping device 1 to swing downwards so as to enable the axis of the precast pile to be vertical to the ground.
And then the horizontal position adjusting device 6 is beneficial to adjusting the position of the pile clamping device 1, so that the precast pile is positioned at the piling position, the pile sinking device 2 (vibrating device) works, the precast pile is driven into a stratum, after piling is in place, the clamping structure in the pile clamping device 1 is loosened, the precast pile is released, and then the process is repeated so as to tightly clamp the pile body to be tightly clamped next.
The pile clamping device 1 in the pile hammer assembly not only can adjust the pitching angle, but also can rotate around the axis of the pile clamping device, can stretch out and draw back along the axis direction of the precast pile to be clamped, and can also adjust the position in the plane range, so that the pile clamping device 1 can be adjusted in multiple angles and all directions, and the pile clamping device is convenient to align and clamp on the premise of reducing the precast pile dragged by the crane, is reliable in alignment, and has important significance for pile foundation construction in the construction industry.
As shown in fig. 13, a concrete embodiment of the pile driver according to the present invention comprises a column 7 and further comprises the pile hammer assembly according to the previous embodiment; the sliding platform 61 on the horizontal position adjusting device 6 in the pile hammer assembly is connected with the upright post 7 in a sliding way. The top of the sliding platform 61 is provided with a pulley block 8 which is convenient for lifting by a lifting device, the pile driver is provided with a winch which lifts or lowers the sliding platform 61, and the winch is connected with the pulley block 8 through a steel wire rope.
The pile driver has all the advantages of the pile hammer assembly, and the beneficial effects of the pile hammer assembly are described in detail in the above text, so that the description is omitted here.
It should be noted that, in the description of the present invention, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
While the preferred embodiments of the present invention have been described in detail, it is to be clearly understood that the same may be varied in many ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. Pile hammer assembly, including pile gripper (1) that is used for centre gripping precast pile, and be used for installing pile sinking device (2) in pile gripper (1) top directly or indirectly, its characterized in that: the pile clamping device comprises a pile clamping device (1), a telescopic component (3) and a pitching angle adjusting device (4), wherein the telescopic component is used for driving the pile clamping device (1) to be sleeved in or withdrawn from a pile head of a precast pile to be clamped, and the pitching angle adjusting device (4) is used for adjusting the pitching angle of the pile clamping device (1) so as to align the pile head of the precast pile, and the telescopic component (3) and the pitching angle adjusting device (4) are arranged above the pile clamping device (1);
The pitching angle adjusting device (4) is connected with the pile sinking device (2) so as to drive the pile clamping device (1) and the telescopic component (3) to realize pitching angle adjustment along with the pile sinking device (2);
The pile sinking device (2) is a vibrating device for applying exciting force, the telescopic component (3) is arranged between the pile sinking device (2) and the top of the pile clamping device (1), the telescopic component (3) directly drives the pile clamping device (1) to move towards a direction close to or far away from the pile sinking device (2), and the pitching angle adjusting device acts on the pile sinking device (2) so as to drive the pile clamping device (1) and the telescopic component (3) to realize pitching angle adjustment along with the pile sinking device (2);
The telescopic assembly (3) comprises a first driving device (33), an outer sleeve (31) and an inner sleeve (32) which are mutually sheathed in a sliding way, the outer sleeve (31) is fixed at the bottom of the pile sinking device (2), the inner sleeve (32) is fixed at the top of the pile clamping device (1), and the first driving device (33) is used for driving the inner sleeve (32) to axially slide relative to the outer sleeve (31);
The pitching angle adjusting device (4) comprises a connecting seat (41) and a second driving device (42), the connecting seat (41) is used for being installed on a pile driver frame, the pile sinking device (2) is rotatably installed on the connecting seat (41), and the second driving device (42) is in transmission connection with the pile sinking device (2) so as to drive the pile sinking device (2) to swing up and down relative to the connecting seat (41);
The pile clamping device also comprises a rotary assembly (5) for driving the pile clamping device (1) to rotate around the axis of the pile clamping device; the revolving assembly (5) comprises a revolving support (51), a revolving body (52) and a third driving device (53), wherein the revolving body (52) is arranged on the revolving support (51) through a bearing, the revolving body (52) is fixedly connected above the pitching angle adjusting device (4), and the third driving device (53) is used for driving the revolving body (52) to rotate around the axis of the revolving body;
The pile clamping device (1) comprises a shell (11), wherein the shell (11) is provided with a pile clamping hole (111) with a downward opening, two or more clamping blocks (12) which extend into the pile clamping hole (111) and can slide radially are arranged in the shell (11), the clamping blocks (12) are driven by a fourth driving device (13) to move back and forth along the radial direction, and the radial reciprocating movement of the clamping blocks (12) can clamp or loosen the end parts of precast piles which extend into the pile clamping hole (111);
The fourth driving device (13) comprises a pushing block (132) which is driven by a clamping oil cylinder (131) or an air cylinder to move up and down, the clamping oil cylinder (131) or the air cylinder is fixed on the top surface of the shell (11), the pushing block (132) is provided with a first inclined surface (133) and is positioned behind the clamping block (12), and the clamping block (12) is provided with a second inclined surface (121) which is in sliding fit with the first inclined surface (133); a T-shaped rib groove guide matching structure is arranged between the first inclined surface (133) and the second inclined surface (121), a T-shaped groove (14 a) in the T-shaped rib groove guide matching structure is arranged on one of the first inclined surface (133) and the second inclined surface (121), and a T-shaped block (14 b) in the T-shaped rib groove guide matching structure is arranged on the other of the first inclined surface (133) and the second inclined surface (121);
The pile clamping device is characterized by further comprising a horizontal position adjusting device (6) for driving the pile clamping device (1) to move in the horizontal plane, wherein the horizontal position adjusting device (6) is arranged above the pitching angle adjusting device (4).
2. The pile hammer assembly of claim 1, wherein: a rib groove guide structure which is arranged along the axial direction is arranged between the outer peripheral wall of the inner sleeve (32) and the inner peripheral wall of the outer sleeve (31), a guide groove in the rib groove guide structure is arranged on one of the outer peripheral wall of the inner sleeve (32) and the inner peripheral wall of the outer sleeve (31), and a guide rib in the rib groove guide structure is arranged on the other of the outer peripheral wall of the inner sleeve (32) and the inner peripheral wall of the outer sleeve (31).
3. The pile hammer assembly of claim 1, wherein: an axial limiting structure for preventing the inner sleeve (32) from being separated from the outer sleeve (31) downwards is arranged between the inner sleeve (32) and the outer sleeve (31).
4. A pile hammer assembly according to claim 3, characterised in that: the axial limiting structure comprises a first stop block (321) arranged on the outer peripheral wall of the inner sleeve (32) and a second stop block (311) arranged on the inner peripheral wall of the outer sleeve (31); the inner sleeve (32) extends out to a state that the first stop block (321) is contacted with the second stop block (311) to be limited.
5. The pile hammer assembly of claim 1, wherein: the first driving device (33) is a telescopic oil cylinder or an air cylinder, the cylinder body of the telescopic oil cylinder or the air cylinder is hinged in the outer sleeve (31), and the piston rod of the telescopic oil cylinder or the air cylinder is hinged in the inner sleeve (32).
6. The pile hammer assembly of claim 1, wherein: the pile sinking device is characterized in that two mounting walls (411) extending downwards and arranged at left and right intervals are arranged on the connecting seat (41), the pile sinking device (2) is pivoted between the two mounting walls (411), and the second driving device (42) is in transmission connection with a pivot of the pile sinking device (2) so as to be used for driving the pile sinking device (2) to swing up and down relative to the connecting seat (41).
7. The pile hammer assembly of claim 6, wherein: the two second driving devices (42) are respectively pivoted on the corresponding mounting walls (411) through a pivot (21), the outer ends of the pivot (21) penetrate through the mounting walls (411) on the corresponding sides of the connecting seat (41), and the two second driving devices (42) are respectively connected with the exposed pivot (21) to drive the pivot (21) to rotate around the axis of the second driving device; the pivot (21) is fixed with a connecting arm (22) extending radially at the part of the mounting wall (411) exposed, the second driving device (42) is a swinging oil cylinder or an air cylinder, one end of the swinging oil cylinder or the air cylinder is hinged with the top supporting part of the connecting seat (41), and the other end of the swinging oil cylinder or the air cylinder is hinged with the connecting arm (22).
8. The pile hammer assembly of claim 1, wherein: the third driving device (53) comprises a driving motor (531) arranged on the slewing bearing (51), a driving gear (532) is arranged at the output end of the driving motor (531), and an outer gear ring part (533) used for being meshed with the driving gear (532) is arranged at the upper part of the slewing body (52).
9. The pile hammer assembly of claim 1, wherein: the outer end surface of the clamping block (12) is provided with two contact surfaces (122) which are at an angle with each other, and the contact surfaces (122) are used for contacting the peripheral surface of the precast pile.
10. The pile hammer assembly according to claim 1, characterized in that the horizontal position adjustment device (6) comprises a sliding platform (61), a first trolley (62) moving on the sliding platform (61) and a second trolley (63) moving on the first trolley (62), the directions of movement of the first trolley (62) and the second trolley (63) being staggered; the pitching angle adjusting device (4) is connected below the second trolley (63) and synchronously moves along with the second trolley (63).
11. The pile hammer assembly according to claim 10, characterized in that the sliding platform (61)) is provided with a first track (611), the first trolley (62) being movable on the first track (611), the first trolley (62) being provided with a second track (621), the second trolley (63) being movable on the second track (621); the first rail (611) and the second rail (621) are perpendicular to each other.
12. Pile driver comprising a column (7), characterized in that: a pile hammer assembly according to any one of claims 1 to 11; the pitching angle adjusting device (4) of the pile hammer assembly is connected to the upright post (7) in a sliding mode.
13. Pile driver comprising a column (7), characterized in that: the pile hammer assembly according to any one of claims 1 to 11; the horizontal position adjusting device (6) is connected with the upright post (7) in a sliding way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144726.0A CN110158591B (en) | 2018-02-12 | 2018-02-12 | Pile hammer assembly and pile driver with pile hammer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144726.0A CN110158591B (en) | 2018-02-12 | 2018-02-12 | Pile hammer assembly and pile driver with pile hammer assembly |
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| CN110158591A CN110158591A (en) | 2019-08-23 |
| CN110158591B true CN110158591B (en) | 2024-05-14 |
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| CN201810144726.0A Active CN110158591B (en) | 2018-02-12 | 2018-02-12 | Pile hammer assembly and pile driver with pile hammer assembly |
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