WO2021049878A2

WO2021049878A2 - Auxiliary boom unit for pile driver, and method for pulling out and driving pile using same

Info

Publication number: WO2021049878A2
Application number: PCT/KR2020/012186
Authority: WO
Inventors: 박정열
Original assignee: (주)대동이엔지
Priority date: 2019-09-09
Filing date: 2020-09-09
Publication date: 2021-03-18
Also published as: WO2021049878A3

Abstract

Disclosed in the present invention are an auxiliary boom unit for a pile driver and a method for pulling out and driving a pile using same. The auxiliary boom unit comprises: an auxiliary boom having a coupling unit coupled to a boom of an excavator; a slider installed to slide along the auxiliary boom; a pile driving unit rotationally installed in a bracket portion of the slider; and a lifting unit supported by the coupling unit or the auxiliary boom so as to lift the slider along the auxiliary boom.

Description

Auxiliary boom unit for driving and drawing and driving method using the same

The present invention relates to an auxiliary boom unit for driving and a pulling and driving method using the same, and more particularly, it is possible to maximize the driving and pulling power of a pile, and for driving that can prevent adjacent piles from being stuck when driving a pile. It relates to an auxiliary boom unit and a drawing and driving method using the same.

In general, in order to construct a building structure or a civil engineering structure, a foundation pile is embedded up to the supporting layer to secure the supporting power. Various materials such as steel and concrete are used for piles for this foundation, and they are installed by various construction methods such as driving and driving after excavation. In particular, sheet piles used for roads, revetments, ports, and river works are pressed into the ground using vibration after the upper head is mounted on the chuck of the driving machine.

Meanwhile, Korean Patent Registration No. 10-1219299 discloses a driving machine, and Korean Patent Publication No. 2009-051629 discloses a driving machine including an active noise control device.

The driving machine as described above is operated by being lifted by a winch or mounted on a boom of an excavator along a lead provided with a guide rail. In the case of constructing a pile using a driving machine mounted on the boom of an excavator, the boom angle of the excavator changes according to the thinness of the pile, so it is not easy to take out the pile in the vertical direction when accurately constructing and drawing the pile.

In particular, when driving a sheet pile by attaching a driving machine to an excavator, there is a problem that the adjacent sheet pile constructed first is stuck like a driven pile.

In addition, there is a problem in that the pile cannot be pulled out smoothly because the pulling force is weak using an excavator during the pulling of the embedded pile. In addition, when a top helm is installed in a state where the auxiliary boom is mounted at the end of the boom of the excavator, there is a problem in that the driving rig cannot be stably supported.

The present invention is to solve the above-described problems, it is possible to prevent adjacent piles from being stuck like the piles being constructed during the construction of the sheet pile, and the pile cannot be pulled out of the ground due to a lack of pulling force when the pile is pulled out. It is an object of the present invention to provide an auxiliary boom unit for driving that has fundamentally solved the problem and a drawing and driving method using the same.

Another object of the present invention is to provide an auxiliary boom unit for driving and a drawing and driving method using the same, which can improve the straightness and constructability of a pile when constructing a section steel or sheet pile.

In order to achieve the above object, the auxiliary boom unit for driving of the present invention includes an auxiliary boom having a coupling portion coupled to a boom of an excavator, a slider slidably along the auxiliary boom, and a driving unit rotatably installed on the bracket of the slider. And, it is supported by the coupling portion or the auxiliary boom and includes a lifting unit for lifting the slider along the guide boom.

In the present invention, the auxiliary boom has a polygonal cross section, and guide rollers or guide pads moving along the outer circumferential surface of the auxiliary boom are installed on the inner circumferential surface of the slider moving along the auxiliary boom.

Further, a pile support part for supporting adjacent piles during construction of the pile is further provided on the lower side of the auxiliary boom, and a horizontal detection sensor for detecting a horizontal state thereof is further provided on the slider.

As an alternative, the drawing and driving method using the auxiliary boom unit for driving of the present invention for achieving the above object is a pile to be installed in the pile holding part of the driving unit supported by a slider that moves along the auxiliary boom installed on the boom of an excavator. A file gripping step of gripping, and

And a pile construction step of constructing a pile using a cylinder of a lift unit installed on the auxiliary boom to lift the slider and a driving unit installed on the slider.

In the present invention, the pile construction step includes an auxiliary boom supporting step of supporting the end of the auxiliary boom of the auxiliary boom unit supported on the boom of the excavator to the ground and then maintaining the vertical state of the auxiliary boom using a vertical detection sensor, In the state where the auxiliary boom is installed, a pile gripping step in which the pile for drawing is gripped by the pile gripping unit of the driving unit, the pile is vibrated using the driving unit, and the auxiliary boom is operated using the cylinder of the lifting unit. Accordingly, a file retrieval step is provided in which the slider is raised to retrieve the file.

The pile construction step includes a first pile construction step in which the auxiliary boom is held in a vertical state while the pie is supported on the pile gripping part of the driving unit, and the pile is driven to a predetermined depth using the driving unit,

As shown in the above, the adjacent pile support step of supporting the adjacent pile by combining the clamp supported by the rope of the pile support part installed on the auxiliary boom and the adjacent pile while the pile is embedded in a certain amount, and

In a state in which the adjacent pile is supported by the pile support, the second pile is constructed using the lifting unit and the driving unit, and a second pile construction step of preventing the adjacent pile from being stuck along with the pile.

The auxiliary boom unit for driving and the drawing and driving method using the same according to the present invention can improve the straightness of the pile that is installed in the process of constructing the pile by being mounted on the boom of the excavator, and the lower side of the auxiliary boom when the pile is pulled out. Since the slider is raised by using a cylinder in a state in which the file is in close contact with the ground, the problem that the file cannot be extracted due to the low pulling force of the pile can be fundamentally solved.

The sliding auxiliary boom unit for driving of the present invention is mounted on an excavator and can fundamentally solve the problem of being stuck along the adjacent sheet pile when the sheet pile is constructed, and the position of the slider can be fixed and moved along the auxiliary boom. Stable construction is possible depending on the size of.

1 is a side view showing a state in which the auxiliary boom unit for driving according to the present invention is installed on an excavator;

Figure 2 is a side view showing a state in which the auxiliary boom unit for driving according to the present invention is mounted on the end of the boom and is unfolded;

Figure 3 is a perspective view showing an excerpt of the auxiliary boom unit for driving according to the present invention,

4 is a perspective view showing a state in which the slider of the auxiliary boom unit for driving according to the present invention is supported by the auxiliary boom unit;

5 is a perspective view showing a state in which a file is driven by the auxiliary boom unit for driving shown in FIG. 1;

Figure 6 is a perspective view showing a state in which the file is pulled out by the navigation aid boom unit shown in Figure 1;

The auxiliary boom unit for driving according to the present invention is capable of smoothly driving or withdrawing a pile on the ground, and an embodiment thereof is shown in FIGS. 1 to 5.

Referring to the drawings, the auxiliary boom unit 20 for driving according to the present invention is mounted on the boom 11 of the excavator 10 to drive or withdraw the pile 100. It is provided with an auxiliary boom (25) having a coupling portion (21) coupled to the clamp installed at the end or the end of the boom (11).

In addition, a slider 30 is provided to be slidable along the auxiliary boom 25, and a bracket 32 is provided on the slider 30, and a driving unit 40 rotatably installed on the bracket 32 Is installed. It is supported by the coupling portion 21 or the auxiliary boom 25 and includes a lifting unit 50 for lifting the slider 30 along the auxiliary boom 25.

The sliding auxiliary boom unit for driving according to the present invention configured as described above will be described in more detail as follows.

The auxiliary boom 25 has a coupling part 21 installed at the top, and the coupling part has a pin coupling hole formed to be coupled with a clamp installed at the end of the boom 11 of the excavator 10, or the boom 11 A coupling pin 23 may be installed to be coupled with the installed quick clamp.

In addition, the auxiliary boom 25 provided with the coupling portion 23 at the top may be formed of a polygonal beam having a hollow portion, and preferably may be formed in a shape having a rectangular outer circumferential surface. A pad portion 26 is formed at the lower end of the auxiliary boom 25 so as to be supported by contacting the ground. A ring portion may be formed on the pad portion 26, and a lower surface of the pad portion 26 may have a structure capable of preventing slipping when in contact with the ground.

The slider 30 slides in the vertical direction along the auxiliary boom 25, a slider body 31 surrounding the auxiliary boom 25, and a bracket 32 extending from the slider body 31. ). Guide rollers 35 are installed on the slider body 31 so as to smoothly move along the outer circumferential surface of the auxiliary boom 25. However, the present invention is not limited thereto, and a sliding pad 36 may be installed between the outer circumferential surface of the auxiliary boom 25 and the inner circumferential surface of the slider body 31 as shown in FIG. 4. In addition, a driving unit 40 for driving or withdrawing the pile 100 is installed in the bracket part 32 extending from the slider body part 31 to one side.

The driving unit 40 may be formed of a vibro hammer that is rotatably installed on the bracket part 32.

This Vibro hammer is published in Korean Patent Registration No. 10-1178276 as a patent application and registration by the inventor of the present application. A vibro hammer for driving a pile using vibration includes a frame part coupled to the bracket part 32 by a hinge shaft: a vibration generating unit installed in the frame part and: installed under the frame part to hold the pile The file holding unit: is provided.

The vibration generating unit comprises a vibration frame that is vibrably coupled to the frame part; A driving motor installed on the vibration frame; A first rotating shaft rotatably installed on the vibration frame so as to receive the rotational force of the driving motor and having an eccentric weight member formed on one side thereof, and a first rotating part provided with a first driven gear on an outer circumferential surface of the first rotating shaft; A second rotation shaft rotatably installed on the vibration frame so as to be positioned above or below the first rotation part and having an eccentric weight member formed on one side thereof, and a second rotation shaft so as not to interfere with each other with the first driven gear on the second rotation shaft. A second rotation unit including a second driven gear formed at a position spaced apart by a predetermined distance along the longitudinal direction of; A connection rotation shaft rotatably installed on the vibration frame to transmit the rotational force of the first rotation unit to a second rotation unit, and a third and a third driven gear engaged with the first and second driven gears respectively installed on the connection rotation shaft. And a power transmission unit including 4 driven gears; wherein the power transmission unit is installed to support any one of the third driven gear or the fourth driven gear on the connecting rotation shaft and supported by a third driven gear or a fourth driven gear It includes a rotary cylinder for rotating the gear at a predetermined angle with respect to the other.

The driving unit is not limited to the vibro hammer of the embodiment, and may be a structure capable of driving or withdrawing the file while holding the file.

On the other hand, the lifting unit 50 is for lifting the slider 30 along the auxiliary boom 25, and includes a cylinder 51 installed on the coupling portion 21 or the auxiliary boom 25, The body portion 52 of the cylinder 51 is coupled to the coupling portion by a hinge shaft, and the rod 53 of the cylinder 51 is coupled by the slider 30 and the hinge shaft 54.

The lifting unit is not limited by the above-described embodiment, and may be made of a lead screw driven by a hydraulic motor, a chain or a rope having a traction unit.

And the lower side of the auxiliary boom 25 is further provided with a pile 100, in particular, a pile support part 60 capable of preventing the adjacent sheet piles from being stuck together during the construction of the sheet pile. In the pile support part 60, one side of the rope 61 is fixed to the lower side of the auxiliary boom 25, and a clamp 62 for gripping the pile is installed on the other side of the rope 61. The pile support part 60 may be of a structure capable of gripping adjacent piles while driving a sheet pile.

In addition, a first vertical detection sensor 200 for detecting a vertical state thereof is installed in the auxiliary boom 25, and a second vertical detection sensor for detecting a vertical support state in the driving unit, that is, the vibro hammer 40 300 is installed. A gyroscope sensor may be used for the first vertical detection sensor 200 and the second vertical detection sensor 300.

The operation of the auxiliary boom unit for driving according to the present invention configured as described above and the drawing and driving method using the same will be described in detail as follows.

In order to drive the pile 100 using the auxiliary boom unit 20 for driving, the coupling portion of the boom 11 of the excavator 10 and the auxiliary boom unit is coupled using a pin or a quick clamp.

Then, the slider 30 is raised along the auxiliary boom 25 using the cylinder 51. In this state, a pile gripping step is performed by gripping the pile 100 to be constructed on the pile gripping part 43 of the driving unit 40 supported by the slider 30, and the lifting unit installed on the auxiliary boom 25 ( Using the cylinder 51 of 20) and the driving unit 40 installed on the slider 30, a pile construction step of driving or drawing a pile is performed.

In performing the pile construction step, in order to drive the pile 100, the end of the supported pile 100 is placed at the construction position and then the vertical state is maintained.

The maintenance of the vertical state uses a first vertical detection sensor 200 installed on the auxiliary boom 25 to detect the vertical state and a second vertical detection sensor 300 installed on the vibro hammer 40 as a driving unit. This makes it possible to maintain the vertical state of the auxiliary boom (25). In this state, the first pile construction step is performed in which the pile is driven to a certain depth using the vibro hammer which is the driving unit.

As described above, in a state in which the pile 100 is embedded in a certain amount, it is coupled to the adjacent pile 110 by using the clamp 62 supported by the rope 61 of the pile support part 60 of the driving unit to support the adjacent pile 100. The adjacent pile support step is performed. This is accomplished by coupling the clamp 62 of the pile support part installed on the lower side of the support boom 25 with the end side (end side protruding to the ground) of the adjacent pile 110 as shown in FIG. 5. Therefore, the adjacent pile 110 is in a state supported by the support boom (25).

In this state, the second pile construction step of the second construction of the pile 100 on which the first construction was made using the lifting unit or the driving unit is performed. In the process of the second pile construction, the adjacent pile 110 is maintained in a state supported by the rope of the pile support part 60, so that the adjacent pile 110 is prevented from being stuck like a pile to be constructed. can do.

The construction of the secondary pile while supporting the adjacent pile 110 generates vibration as a vibro hammer of the driving unit 40 and uses the cylinder 51 as the lifting unit for the auxiliary boom 25. It is preferable to drive the pile 100 by lowering the slider 30 on which the driving unit 40 is supported.

And in the pile construction step of constructing the pile using the auxiliary boom unit installed in the excavator, in order to pull out the pile 100 embedded in the ground, the boom of the excavator 10 is located in a position close to the pile 100 for pulling out. After supporting the auxiliary boom 25 of the auxiliary boom unit supported by (11) on the ground, the auxiliary boom support step of maintaining the vertical state of the auxiliary boom 25 using the first vertical detection sensor 200 is performed. . And while the auxiliary boom 25 is installed, a file gripping step of the pile 100 for drawing is gripped by the pile gripping unit of the driving unit 40, and the pile 100 using the driving unit While vibrating and performing a file withdrawal step of pulling out the file 100 by raising the slider body 31 along the auxiliary boom 25 using the cylinder 51 of the lifting unit.

In performing the file withdrawal step of withdrawing the file as described above, the file 100 is vibrated using the vibro hammer of the driving unit 40 and the cylinder 51 of the lifting unit 40 is operated. The slider body 31 is raised along the auxiliary boom 25.

In this way, the driving unit 40 hinged to the bracket part 32 formed integrally with the slider body part 31 rises and the pile is pulled out. Since the pulling of the pile 100 for pulling out the pile is made by the operating force of the cylinder 51, that is, the hydraulic cylinder, the pulling of the pile 100 rotates the excavator boom 11 as in the prior art. Since the pile 100 is pulled by lifting the pile, it is possible to solve a fundamental problem in that the rear of the excavator is lifted or the pile is not pulled out due to a lack of pulling force.

As described above, the auxiliary boom unit for driving and the pulling driving method using the same according to the present invention enables pulling of piles that require a relatively large pulling force using an excavator, and adjacent piles are stuck when constructing a sheet pile. It can be fundamentally solved.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the appended registration claims.

Claims

An auxiliary boom having a coupling portion coupled to the boom of an excavator, a slider slidably installed along the auxiliary boom, a driving unit rotatably installed on the bracket portion of the slider, and supported by the coupling portion or the auxiliary boom A sliding auxiliary boom unit for driving, characterized in that it comprises a lifting unit for lifting the slider along the auxiliary boom.
The method of claim 1,

An auxiliary boom unit for driving, characterized in that further comprising a pile support part for supporting adjacent piles during construction of the pile on the lower side of the auxiliary boom.
The method of claim 1,

The lifting unit is an auxiliary boom unit for driving, characterized in that it comprises a hydraulic cylinder installed between the auxiliary boom and the bracket part.
A pile gripping step of gripping a pile to be constructed on the pile support part of the driving unit mounted on the bracket part of the slider installed to be slidable by the lifting unit along the auxiliary boom coupled by the boom and the coupling part of the excavator;

And a pile construction step of driving the pile after maintaining the pile and the auxiliary boom supported on the pile support part of the driving unit in a vertical state.
The method of claim 4,

The pile construction step includes an auxiliary boom supporting step of supporting the auxiliary boom of the auxiliary boom unit supported on the boom of the excavator on the ground and then maintaining the vertical state of the auxiliary boom using a first vertical detection sensor installed on the auxiliary boom; With the auxiliary boom installed, the pile for drawing is gripped by the pile gripping unit of the driving unit, and then the pile is vibrated using the driving unit, and the slider is raised along the auxiliary boom using the cylinder of the lifting unit. Drawing and driving method using the auxiliary boom unit for driving, characterized in that it further comprises a file withdrawal step for withdrawing.
The method of claim 4,

The pile construction step includes a first pile construction step in which the auxiliary boom is held in a vertical state while the pile is supported by the pile holding part of the driving unit, and the pile is driven to a predetermined depth using the driving unit,

The adjacent pile support step of supporting the adjacent pile by combining with the adjacent pile and the clamp connected by the auxiliary boom and the rope while the pile is embedded in a certain amount,

In a state in which the adjacent pile is supported by the pile support, the second pile is constructed using the lifting unit and the driving unit, and a second pile construction step of preventing the adjacent pile from being stuck along the pile to be constructed. Drawing and driving method using auxiliary boom unit for driving.