CN217378887U

CN217378887U - Piling device

Info

Publication number: CN217378887U
Application number: CN202221049434.7U
Authority: CN
Inventors: 翁贵华; 林春宇; 高少波; 蒋银刚; 陈维; 文力; 廖志攀; 何渊; 朱科熹; 李文君; 谭政; 曹垠; 李佳
Original assignee: Decoration Engineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Current assignee: Decoration Engineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-09-06
Anticipated expiration: 2032-04-27

Abstract

The utility model relates to a pile driving device, which comprises an impact head and a pile driving head, wherein the impact head is provided with a drill rod, and the drill rod and the pile driving head are arranged in the same axial direction; the pile driving head comprises a connecting part and an impact part which are sequentially and continuously arranged along the axial direction of the pile driving head, the impact part is used for impacting the top of a pile, the drill rod is fixedly connected with the connecting part, and the drill rod can drive the pile driving head to vertically move back and forth. The drill rod of the impact head is fixedly connected with the connecting part of the pile driving head to form a force transmission driving structure, and the drill rod can drive the pile driving head to move up and down in the vertical direction, so that the impact part can impact the pile repeatedly in a short stroke, the pile driving operation is realized, the required time is less, the efficiency is higher, and the construction period can be shortened; and the impact force can be determined according to the required impact force of the pile, and then a proper impact head can be selected, so that the impact force is not too large, the potential safety hazard is small, and the structural influence on the top of the pile is reduced.

Description

Piling device

Technical Field

The utility model relates to a pile driving apparatus technical field, especially a pile driving device.

Background

In the construction of pile reinforcement of the foundation, a drop hammer pile driver, a steam hammer pile driver and a diesel hammer pile driver are generally adopted as pile driving equipment, and the construction principle is that a pile driving head heavy hammer is vertically lifted, a pile top is hammered by the free falling of the pile driving head, the gravitational potential energy is realized to do work, and the operation of hammering a pile body into the foundation is completed. Although the technology is mature, the conventional piling equipment cannot meet construction conditions for piling work in small indoor space and on the existing foundation side. Such as: the conventional pile driver has large equipment, so that the requirement on the space size of a small space for indoor pile driving operation is difficult to meet, and the equipment cannot enter or be erected in a construction area; the pile driving head of the conventional pile driver is large in size, low in pile driving precision and easy to deviate in order to meet the requirement of design on the pile top hammering force, and can damage the existing structural members; the pile head of the conventional pile driver does work by gravity, and the pile head needs to be lifted to the height required by the design and then freely falls off every time, so that the required time is long, the efficiency is low, and the construction period is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the pile driver head rest does work by gravity, needs to be lifted to a design required height and then falls freely each time, and has the problems of more required time, lower efficiency and influence on the construction period in the prior art; in view of the above problems, a piling device is provided.

In order to realize the purpose, the utility model discloses a technical scheme be:

a pile driving device comprises an impact head and a pile driving head, wherein the impact head is provided with a drill rod, and the drill rod and the pile driving head are coaxially arranged;

the pile driving head comprises a connecting part and an impact part which are sequentially and continuously arranged along the axial direction of the pile driving head, the impact part is used for impacting the top of a pile, the drill rod is fixedly connected with the connecting part, and the drill rod can drive the pile driving head to vertically move back and forth.

The impact head can be an existing impact head, such as a hydraulic impact head, and is generally provided with a drill rod which can do telescopic motion along the axial direction. The drill rod is fixedly connected with the connecting part in the conventional mode, and the drill rod is only required to be fixed with the connecting part. The drill rod of the impact head can provide power for the vertical back and forth movement of the pile driving head, namely the drill rod can drive the pile driving head to move back and forth in the vertical direction, and further pile driving impact force can be provided, namely the pile driving head is driven by the drill rod, and the impact part can repeatedly impact the pile in a short stroke, so that pile driving operation is realized. Compared with the existing pile driver, the pile driver head rest does work by gravity, needs to be lifted to the height required by the design and then falls freely each time, needs less time, has higher efficiency and can shorten the construction period; and the impact force can be determined according to the impact force required by the piling operation, so that a proper impact head can be selected, the impact force is not too large, the potential safety hazard is small, and the structural influence on the top of the pile is reduced.

Preferably, the stroke of the drill rod moving back and forth is 3-10cm, namely the distance of the pile driving head impacting back and forth up and down is 3-10cm, so that the impact operation process required by pile driving can be met, the required time is relatively short, the efficiency is high, and the construction period can be shortened more effectively.

Preferably, the impact part is from being close to along its axial connecting portion are kept away from the gradual expansion structure of connecting portion compares in the unchangeable structure in cross-section such as adoption square, cuboid, adopts the gradual expansion structure, and is close to connecting portion are kept away from connecting portion crescent cross-section can improve and pass the power effect.

Preferably, the impact part is of an arc-shaped structure along the axial direction, so that the force transmission effect is further improved.

Preferably, the pile driving head further comprises a limiting part, the limiting part is located at one end, away from the connecting part, of the impact part, and the limiting part can form radial limiting with the top of the pile.

Under the cooperation condition of adopting impact head and pile driving head, can set up spacing portion in the bottom of pile driving head, spacing portion can with the top of stake forms radially spacingly, and has certain impact direction function, can avoid the pile to strike the in-process and take place the skew, can improve the precision of piling.

Preferably, the limiting part comprises a limiting groove arranged along the axial direction of the limiting part, the size of the limiting groove is matched with that of the pile, the pile can extend into the limiting groove and abut against the impact part, and the axial length of the limiting groove is larger than or equal to the stroke of the drill rod in the back-and-forth movement.

The top of the pile is limited by the limiting groove, the radial limiting effect is good, the axial length of the limiting groove is larger than or equal to the stroke of the drill rod in the back-and-forth movement, the whole piling process can be guided by the limiting groove, the piling impact process can be better prevented from deviating, and the piling precision is improved.

Preferably, the limiting groove is a circular section groove, and the diameter of the limiting groove is 1-3mm larger than that of the pile. The limiting groove is adaptive to the circular-section pile, the diameter of the limiting groove is slightly larger, the limiting groove can move up and down along the pile, and the radial limiting and axial guiding functions can be effectively achieved.

Preferably, one end of the limiting groove, which is close to the impact portion, is provided with a protective cushion block, the protective cushion block can transmit axial impact force of the impact portion to the top of the pile, and the axial length of the limiting groove is greater than or equal to the sum of the thickness of the protective cushion block and the stroke of the drill rod in back-and-forth movement.

Through setting up the protection cushion, can avoid strikeing the top that the portion directly strikeed the stake, realize the buffering, and then the top of protection stake avoids the top of stake to suffer too big destruction. The axial length of the limiting groove is larger than or equal to the sum of the thickness of the protection cushion block and the stroke of the drill rod in back-and-forth movement, so that the limiting groove can guide and radially limit the whole piling process on the premise that the protection cushion block is arranged.

Preferably, the thickness of the protection cushion block is 3-7cm, the protection effect on the top of the pile can be better met, and the impact force influence on piling is small.

Preferably, the connecting part, the impact part and the limiting part are of an integrally formed structure, and the connecting part, the impact part and the limiting part are high in integrity and strength and beneficial to piling.

Preferably, the connecting part is provided with a connecting groove arranged along the axial direction of the connecting part, the drill rod extends into the connecting groove and is connected with the side wall of the connecting groove, and the connecting stability is high.

Preferably, the side wall of the connecting groove and the front end of the drill rod are provided with adaptive bolt holes, and the side wall of the connecting groove is connected with the drill rod through a connecting bolt.

Adopt detachable connected modes such as bolt, can realize fixed connection, can also dismantle for can make up the impact head and the pile head of difference, reuse.

Preferably, the length of the drill rod extending into the connecting groove is 5-10cm, and the connecting performance is good.

Preferably, the impact head is a hydraulic impact head, so that the existing structure is convenient to select and use, and independent processing is not needed.

Preferably, the connecting portion with spacing portion is the sleeve, and the sleeve is inside to form the recess with impact portion, the processing of being convenient for.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the pile driving device of the utility model forms a force transmission driving structure by fixedly connecting the drill rod of the impact head with the connecting part of the pile driving head, the drill rod can drive the pile driving head to move up and down in the vertical direction, so that the impact part can repeatedly impact the pile in a shorter stroke, thereby realizing pile driving operation, having less required time and higher efficiency and shortening the construction period; and the impact force can be determined according to the required impact force of the pile, and then a proper impact head can be selected, so that the impact force is not too large, the potential safety hazard is small, and the structural influence on the top of the pile is reduced.

2. The impact part adopts a gradually expanding structure, and the section is gradually increased from the approach of the impact part to the distance of the impact part from the connection part, so that the force transmission effect can be improved. The impact part is of an arc-shaped structure along the axial direction, so that the force transmission effect is further improved.

3. Under the cooperation condition of adopting impact head and pile driving head, can set up spacing portion in the bottom of pile driving head, spacing portion can with the top of stake forms radially spacingly, and has certain impact direction function, can avoid the pile to strike the in-process and take place the skew, can improve the precision of piling.

4. Whole pile process homoenergetic is led by the spacing groove, and the precision of skew, improvement pile in the impact process of avoiding piling that can be better takes place.

5. Through set up the protection cushion in the spacing inslot, can avoid the top of the direct impact stake of portion of strikeing, realize the buffering, and then the top of protection stake avoids the top of stake to suffer too big destruction.

Drawings

Fig. 1 is a schematic structural view of the pile driving device in embodiment 1;

FIG. 2 is a view showing a state of use of the pile driving apparatus according to embodiment 1;

fig. 3 is a partially enlarged schematic view of fig. 2 at the circled position.

Icon: 1-impact head; 11-a drill rod; 2-piling a pile head; 21-a limiting part; 22-a striking section; 23-a connecting part; 24-a connecting groove; 25-a limit groove; 26-connecting bolts; 3-protecting the cushion block; 4-steel pipe pile; 5-a pickaxe machine; 51-a power arm; 6-existing foundation; 7-foundation pit.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

The embodiment provides a pile driving device, and referring to fig. 1-3, the pile driving device comprises an impact head 1 and a pile driving head 2, wherein the impact head 1 is provided with a drill rod 11, and the drill rod 11 and the pile driving head 2 are coaxially arranged;

the pile driving head 2 comprises a connecting part 23 and an impact part 22 which are sequentially and continuously arranged along the axial direction of the pile driving head, the impact part 22 is used for impacting the top of a pile, the drill rod 11 is fixedly connected with the connecting part 23, and the drill rod 11 can drive the pile driving head 2 to vertically move back and forth.

In the scheme, the impact head 1 can be an existing impact head, such as a hydraulic impact head and the like, and can be an electric impact head, an air pump and the like, the impact head 1 is generally provided with a drill rod 11, and the drill rod 11 can do telescopic motion along the axial direction. Of course, the drill rod 11 can also be machined separately. The impact head 1 is a hydraulic impact head, is convenient for selecting and using the existing structure, and does not need to be processed independently. The choice of impact head 1, i.e. the piling impact force with a power that meets the design requirements. The drill rod 11 is fixedly connected with the connecting part 23 in the conventional manner, and the drill rod 11 is only required to be fixed with the connecting part 23. The drill rod 11 of the impact head 1 can provide power for the vertical back and forth movement of the pile driving head 2, namely the drill rod 11 can drive the pile driving head 2 to move back and forth up and down in the vertical direction, and further can provide pile driving impact force, namely the pile driving head 2 is driven by the drill rod 11, and the impact part 22 can repeatedly impact the pile in a short stroke, so that pile driving operation is realized.

As shown in fig. 1, the drill rod 11 can extend and contract in the impact head 1, and the drill rod 11 is fixedly connected with the connecting part 23 of the pile driving head 2, so that the whole pile driving head 2 can be driven to move up and down and back and forth, and the impact part 22 of the impact head 1 can impact the top of the pile. Compared with the existing pile driver, the pile driver head applies work by gravity, needs to be lifted to the height required by the design and then freely falls off each time, needs less time, has higher efficiency, and can shorten the construction period; and the impact force can be determined according to the impact force required by the pile, and then a proper impact head 1 can be selected, so that the impact force is not too large, the potential safety hazard is small, and the structural influence on the top of the pile is reduced.

As shown in fig. 1, the connecting portion 23 has a connecting groove 24 disposed along an axial direction thereof, and the drill rod 11 extends into the connecting groove 24 and is connected to a sidewall of the connecting groove 24, so that the connection stability is high. The length of the drill rod 11 extending into the connecting groove 24 is 5-10cm, and the connecting performance is good. And the side wall of the connecting groove 24 and the front end of the drill rod 11 are provided with adaptive bolt holes, and the side wall of the connecting groove 24 is connected with the drill rod 11 through a connecting bolt 26. The dimensions of the shank 11 determine the dimensions of the connecting recess 24 and the connecting bolt 26. Adopt detachable connected modes such as bolt, can realize fixed connection, can also dismantle for can make up reuse with impact head 1 and pile head 2 of difference. As shown in fig. 3, since the top of the drill rod 11 of the prior art impact head 1 may have a circular arc structure, the bottom of the connecting groove 24 is formed in a circular arc shape or is matched with the top of the drill rod 11, so that the connecting performance of the drill rod 11 and the connecting portion 23 is better.

In this embodiment, the stroke of the back and forth movement of the drill rod 11 is suitably 3-10cm, that is, the distance of the up and down back and forth impact of the pile driving head 2 is 3-10cm, which can satisfy the impact operation process required by pile driving, and has relatively less required time, higher efficiency, and can shorten the construction period more effectively.

As shown in fig. 1, the impact portion 22 of the present embodiment has a gradually expanding structure, and the cross section of the impact portion gradually increases from the position close to the connecting portion 23 to the position away from the connecting portion 23, so that the force transmission effect can be improved as compared with a structure in which the cross section is not changed, such as a cube or a rectangular parallelepiped. Of course, the impact portion 22 may also be a solid structure such as a cube or a rectangular parallelepiped. In addition, as can be seen from fig. 1, the striking portion 22 has an arc-shaped structure along the axial direction, i.e., the outer contour thereof is arc-shaped along the axial direction, which can further improve the force transmission effect. And the pile driving head 2 further comprises a limiting part 21, the limiting part 21 is positioned at one end of the impact part 22 far away from the connecting part 23, and the limiting part 21 can form radial limitation with the top of the pile. Under the cooperation condition that adopts impact head 1 and pile driving head 2, can set up spacing portion 21 in pile driving head 2's bottom, spacing portion 21 can with the top of stake forms radially spacingly, and has certain impact guide function, can avoid the piling to strike the in-process and take place the skew, can improve the precision of piling. The position-limiting portion 21 may be a position-limiting guide by a position-limiting groove 25 or the like, or may be a radial position-limiting guide or an axial guide by various position-limiting plates or the like provided in the circumferential direction.

In this embodiment, as shown in fig. 1, the limiting portion 21 includes a limiting groove 25 disposed along the axial direction thereof, the size of the limiting groove 25 is adapted to the size of the pile, the pile can extend into the limiting groove 25 and abut against the impact portion 22, and the axial length of the limiting groove 25 is greater than or equal to the stroke of the drill rod 11 moving back and forth. The top of the pile is limited by the limiting groove 25, the radial limiting effect is good, the axial length of the limiting groove 25 is larger than or equal to the stroke of the drill rod 11 in back-and-forth movement, the whole piling process can be guided by the limiting groove 25, the piling impact process can be better prevented from deviating, and the piling precision is improved. In addition, in this embodiment, the size of the connecting portion 23 is smaller than the size of the limiting portion 21, so that the material can be saved.

Except for the fact that the pile in the embodiment is a steel pipe pile 4 which is of an annular section, the end face stress capacity is relatively poor. In this embodiment, the limiting groove 25 is a circular cross-section groove, and the diameter of the limiting groove 25 is 1-3mm larger than the diameter of the pile. The limiting groove is adaptive to the circular-section pile or the annular-section pile, the diameter of the limiting groove 25 is slightly larger, the limiting groove 25 can move up and down along the pile, and the radial limiting function and the axial guiding function can be effectively achieved.

For the top of protection pile, especially the top of steel-pipe pile 4, spacing groove 25 is close to the one end of impact portion 22 is equipped with protection cushion block 3, protection cushion block 3 can transmit impact portion 22's axial impact force extremely the top of pile through setting up protection cushion block 3, can avoid impact portion 22 directly to strike the top of pile, realizes the buffering, and then the top of protection pile avoids the top of pile to suffer too big destruction. The thickness of the protection cushion block 3 is suitable to be 3-7cm, the protection effect on the top of the pile can be better met, and the impact force on piling is less influenced. The axial length of the limiting groove 25 is greater than or equal to the sum of the thickness of the protective cushion block 3 and the stroke of the drill rod 11 in back-and-forth movement, so that the limiting groove 25 can also guide and radially limit the whole piling process on the premise of arranging the protective cushion block 3.

Besides, in this embodiment, the connecting portion 23, the impact portion 22 and the limiting portion 21 are integrally formed, so that the integrity is high, the strength is high, and the piling is facilitated. The connecting portion 23 and the limiting portion 21 are sleeves, grooves, namely a limiting groove 25 and a connecting groove 24, are formed in the sleeves and the impact portion 22, and machining is facilitated.

As shown in fig. 2-3, in use, the pile driving head 2 can be connected to the impact head 1, the impact head 1 is connected to the power arm 51 of the pick 5, so as to form a movable pile driving device, the pick 5 can be selected to have a smaller structure, and the pile driving head 2 can also be made to have a small volume, so that the whole movable pile driving device can be used indoors in existing buildings. The pick 5 is formed by removing a bucket from a digging machine. As shown in fig. 2, a pile structure such as a steel pipe pile 4 in a foundation pit 7 having an existing foundation 6 or being close to the existing foundation 6 can be subjected to pile driving work.

In the scheme, after the size of the drill rod 11 of the hydraulic impact head 1 is determined, the pile driving head 2 can be customized according to the pile body diameter of the steel pipe pile 4 required by design. The upper connecting groove 24 of the customized piling head 2 adopts a double-nut bolt as a connecting bolt 26 to be locked with the drill rod 11 of the impact head 1, so as to prevent the falling; the lower part is manufactured with a limit groove 25 according to the designed diameter of the pile body, if the diameter of the limit groove 25 is 2mm larger than the diameter of the pile body, a certain moving space is reserved to avoid the pile head 2 and the pile body from being clamped tightly; the solid wood cushion block embedded in the lower limiting groove 25 serves as a protective cushion block 3, and serves as protection of pile cap during pile striking each time, so that pile body damage is avoided, and conditions are provided for pile body lengthening welding in the next step. The customized piling head 2 can be repeatedly utilized, and the economic benefit is good; the impact piling efficiency is high, and the construction period is effectively guaranteed; the operability is strong, and the applicability of a small construction space is guaranteed; the pile driving head 2 has small volume and safe and civilized construction is ensured. Adopt above-mentioned customization pile driving head 2 can carry out the pile construction operation in little space, and the work progress is simple and convenient, pile driving head 2 reuse, and is little to the interference of existing basis 6, can shorten construction cycle, and the potential safety hazard is little, and civilized construction is secure.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A piling device, characterized by comprising an impact head (1) and a piling head (2), wherein the impact head (1) is provided with a drill rod (11), and the drill rod (11) and the piling head (2) are coaxially arranged;

the pile driving head (2) comprises a connecting part (23) and an impact part (22) which are sequentially and continuously arranged along the axial direction of the pile driving head, the impact part (22) is used for impacting the top of a pile, the drill rod (11) is fixedly connected with the connecting part (23), and the drill rod (11) can drive the pile driving head (2) to vertically move back and forth.

2. Piling device according to claim 1, characterised in that the stroke of the back and forth movement of the drill rod (11) is 3-10 cm.

3. Piling device according to claim 1, characterised in that the impact portion (22) is of a diverging configuration in its axial direction from near the connection portion (23) to far from the connection portion (23).

4. Piling device according to claim 3, characterised in that the impact portion (22) is of arcuate configuration in the axial direction.

5. Piling device according to any one of claims 1 to 4, characterised in that the piling head (2) further comprises a stop portion (21), the stop portion (21) being located at an end of the impact portion (22) remote from the connecting portion (23), the stop portion (21) being capable of forming a radial stop with the top of the pile.

6. Piling device according to claim 5, characterised in that the stop portion (21) comprises a stop groove (25) arranged axially along it, the size of the stop groove (25) being adapted to the size of the pile which can extend into the stop groove (25) and abut the impact portion (22), the axial length of the stop groove (25) being greater than or equal to the stroke of the drill rod (11) to and fro.

7. Piling device according to claim 6, characterised in that the end of the limiting groove (25) close to the impact portion (22) is provided with a protective pad (3), the protective pad (3) being able to transmit the axial impact force of the impact portion (22) to the top of the pile, the axial length of the limiting groove (25) being greater than or equal to the sum of the thickness of the protective pad (3) and the stroke of the drill rod (11) to and fro.

8. Piling device according to claim 7, characterised in that the thickness of the protective pad (3) is 3-7 cm.

9. Piling device according to claim 5, characterised in that the connecting part (23), the impact part (22) and the stop part (21) are all of one piece construction.

10. Piling device according to any of the claims 1-4, characterised in that the connecting part (23) has a connecting groove (24) arranged in its axial direction, the drill rod (11) extending into the connecting groove (24) and being connected to the side walls of the connecting groove (24).