JP3029301U - Low floor pile press-in / pull-out machine with crane - Google Patents

Abstract

(57) [Abstract] [Problem] A crane that does not cause the rope to come off due to a change in the posture of the crane, easily avoids a collision even when there is an obstacle such as a bridge when working in a river, and improves the working efficiency. An object of the present invention is to provide a low-floor pile press-fitting / pulling-out machine. SOLUTION: The reaction force clamp device 2 is located below a saddle 1 which is fixedly placed on an existing pile and clamps the existing pile at the time of work, and the saddle 1 is above the saddle 1 via a slide base 3 with respect to the saddle 1. And a chuck frame 5 that is arranged so as to be slidable in the front-back direction, a chuck frame 5 that is arranged in front of the substrate 4 and has a pair of pile press-fitting / extracting cylinders 6 arranged on both left and right sides, and a chuck frame 5 that is arranged below the chuck frame 5. In the low-floor pile press-fitting / extracting machine equipped with a chuck 32 for gripping the piles, the crane support bracket 10 is fixed to one side of the base 4, and the crane boom 11 is attached to the crane support bracket 10. The structure is a low-floor pile press-fitting / pulling machine in which the crane boom 11 can be vertically moved as a whole and the crane boom 11 can be raised and lowered.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a low-floor type pile press-fitting / pulling machine with a crane, and more particularly to improvement of the arrangement structure of cranes in a self-propelled pile press-fitting / pulling machine equipped with a crane.

[0002]

[Prior art]

 Conventionally, a self-propelled static load type pile press-in / extractor has been used, but this pile press-in / extractor is equipped with a reaction force clamp device below the saddle fixed on the existing pile and is slidable with respect to the saddle. It is equipped with a chuck frame in which a pile press-in / pull-out cylinder is arranged in the front position of the base provided in the above, and a chuck for gripping the pile arranged under the chuck frame. The pile is firmly gripped, and the pile press-in / pull-out cylinder is used to press and extract the pile into the soil.

Particularly when performing pile driving work in a river or the like, the existing piles that have been driven are moved by themselves to clamp the existing piles to take a reaction force and to strike new piles in a row. The method of construction is adopted. For this reason, a low-floor pile press-in / pull-out machine has been adopted in consideration of pile driving work in places where there is not enough height such as under the bridge.

As a recent low-floor-type pile press-in / extractor, there is also known an example in which a crane is equipped to chuck a pile for building into a pile gripping device of the press-in / pull-out extractor. For example, in Japanese Examined Patent Publication No. 7-11139, it is possible to move on an existing pile by sliding a saddle in which a clamp is hung vertically on the lower part and a table in which a chuck is provided at the front end so that the crane can be moved on the table. A configuration of a pile press-fitting and extracting machine with a crane, which is displaceably mounted on a table so as to be substantially flush with the upper surface, is disclosed. Specifically, the crane is attached to the table so that it can be laid sideways or tilted backwards, and when working on a river or under a bridge, when the crane hits the bridge or the like located above when traveling by itself, When there is an obstacle, the crane is laid sideways or backward to avoid a collision.

[0005]

[Problems to be solved by the device]

 However, in the case of such a conventional pile press-fitting / pulling machine with a crane, when the crane is laid down sideways or backward, the sheave (pulley) installed at the tip of the crane moves from the normal position to a large posture. Changes and the rope wrapped around the sheave comes off the sheave. For this reason, the stopper is not perfect, but once the crane is returned to its original position, the rope is caught in the stopper and sheave, making it difficult to remove.

Especially when the crane is laid down sideways, the posture of the sheave changes in the horizontal direction by about 90 degrees, so the rope easily comes off the sheave, and even if the crane is raised, the rope does not fit in the sheave. I will end up. Therefore, although measures are taken to prevent slipping off, it is not perfect, and problems such as the rope catching on the slip off and the sheave arise. Therefore, when a worker uses a crane to build a new pile, he must be aware of this condition and reset the rope, etc., and perform complicated work. In such a case, the pile construction work cannot be performed as a matter of course, so the work efficiency is likely to decrease.

Therefore, the present invention solves the problems of such a conventional pile press-fitting / pulling machine with a crane so that the rope does not come off due to a change in the posture of the crane, and it is possible to increase the height when working in a river. It is an object of the present invention to provide a low-floor pile press-fitting / extracting machine with a crane that can easily avoid a collision even when there is an obstacle such as a bridge in the vertical direction and can improve the work efficiency.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention uses a reaction force clamp device that is placed below a saddle fixed on an existing pile and clamps the existing pile during work, and a slide base that is above the saddle. A base that was slidable in the front-back direction with respect to the saddle, a chuck frame that was placed in front of the base and had a pair of pile press-in / pull-out cylinders on both left and right sides, and a lower part of the chuck frame. In a low-floor type press-fitting / pulling machine equipped with a chuck for gripping a pile, a crane support bracket is fixed to one side of the above-mentioned base, and the crane boom can be vertically moved as a whole on the crane support bracket. In addition, a low-floor type pile press-in / pull-out machine with a crane is provided in which the tip of the crane boom is arranged so that it can be raised and lowered.

According to a second aspect of the present invention, a means for automatically moving the crane boom up and down by driving a vertically moving cylinder is used. According to the third aspect, a swivel base is arranged on a crane support bracket, and a mounting provided on the swivel base. A means for making the crane boom as a whole movable up and down by connecting a pair of links to the base portion in a bendable manner and disposing a boom hoisting cylinder between one of the links and the crane boom. Therefore, a mounting base is provided on the crane support bracket, the tilting bracket is pivotally supported by the mounting base through a shaft, and the crane boom is pivotally supported by the tilting bracket through the shaft. By installing a boom tilting cylinder between the support bracket and the support bracket, the crane boom can be moved vertically as a whole. According to claim 5, the swivel base is arranged on the crane support bracket, and the first crane boom is pivotally supported by the mounting base provided on the swivel base via the shaft body, and further the first crane boom is mounted. A second crane boom is connected via a hinge so that it can be hoisted, a hoisting cylinder is provided between the mounting base and the first crane boom, and a boom folding cylinder is provided between the first crane boom and the second crane boom. By providing a crane boom, the crane boom can be moved vertically as a whole.

Further, according to claim 6, when the crane boom is lowered, a means for causing the upper surface of the crane boom to be substantially flush with the upper surface of the chuck frame is provided. , Provides a means for the top surface of the crane boom to be approximately flush with the top surface of the base.

According to the constructions of claims 1 and 2, at the time of normal press-fitting / pulling-out of the pile, after the existing pile is clamped by using the reaction force clamp device, the pile is built in the chuck frame and firmly chucked, Pile press-in / pull-out work is performed by the action of the pair of press-in / pull-out cylinders. Further, slide the slide base to slide the chuck frame forward by one pitch of the pile, then press-fit a new pile halfway and keep the chuck of the pile by the chuck frame while maintaining the existing pile by the reaction force clamp device. After releasing the clamped state, raise the board (both clamp and saddle), slide the saddle forward one pitch of the pile along the slide base, and then lower the board (both clamp and saddle) and repeat the reaction. The pile press-in / pull-out machine self-propels on the existing pile by clamping the existing pile with the force clamp device.

Further, when there is an obstacle such as a bridge in the front, the boom hoisting cylinder is driven to tilt the crane boom in the horizontal direction, and the vertically moving cylinder arranged below the crane support bracket is driven. When the crane boom is lowered as a whole, the upper surface of the crane boom and the upper surface of the chuck frame or the upper surface of the base substantially coincide with each other, which allows the crane to pass while avoiding collision with the obstacle.

According to the configuration of claim 3, the posture of the crane boom is corrected in the horizontal direction by the combined use of the bending operation of at least two links and the operation of the boom hoisting cylinder. According to this configuration, the tilting bracket falls down as the boom tilting cylinder shrinks, which makes it possible to change the crane boom from the raised position to the lowered position. Further, according to the configuration of claim 5, the boom tilting device is used. The first crane boom is changed from the lowered position to the raised position as the cylinder is contracted, and the first and second crane booms are bent around the hinge as the center of rotation by the telescopic operation of the boom folding cylinder. Since it extends linearly, the posture of the crane boom can be easily corrected and in any case the collision between the crane and the obstacle can be avoided. come.

[0014]

[Embodiment of device]

 Various embodiments of a low floor type pile press-fitting / pulling machine with a crane according to the present invention will be described below with reference to the drawings. 1 is a side view showing a first embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a front view of the same. Reference numeral 1 in the drawing denotes a saddle, and a reaction force is applied to a lower portion of the saddle 1. Clamp devices 2 and 2 are provided, and a slide base 3 that is slidable in the front-rear direction with respect to the saddle 1 is attached to the upper portion of the saddle 1. The reaction force clamp devices 2 and 2 have a function of clamping an existing pile at the time of operation.

Reference numeral 4 denotes a base fixed on the slide base 3, and a chuck frame 5 is arranged in front of the base 4, and a pair of pile press-fitting / extracting cylinders 6, 6 are arranged on both left and right sides of the chuck frame 5. Has been deployed. A chuck 32 is rotatably provided in the lower portion of the chuck frame 5, and a space portion 7 through which a steel sheet pile (not shown) can be inserted is formed. As shown in FIG. 3, a movable claw 8 incorporating a chuck cylinder and a fixed claw 9 are provided on the lower side of the chuck 32, and a steel sheet pile inserted into the space 7 is fixed to the movable claw 8. Firmly chuck with the claw 9.

A crane support bracket 10 is fixed to one side of the base 4, on which a crane boom 11 is vertically movable as a whole, and the crane boom 11 is raised and lowered. It is deployed freely. 12 is an upper / lower moving cylinder of the crane boom 11 fixedly arranged below the crane support bracket 10, 13 and 13 are boom hoisting cylinders, and 14 is a hoisting and hoisting of a rope 15 attached to the crane boom 11. Motor. A sheave 16 around which a rope 15 is wound is pivotally supported at the tip of the crane boom 11. The up / down moving cylinder 12 may be fixed to the upper side of the crane support bracket 10.

The operation of the first embodiment of the present invention constructed as above will be described below. That is, at the time of pile press-fitting in a work site where the work space in the height direction such as under the bridge is limited, the existing piles are clamped by using the reaction force clamp devices 2 and 2, and then the boom hoisting cylinder 13 is driven. With the crane boom 11 in an optimal up-and-down posture, the rope 15 is actuated by the drive of the hoisting / lowering motor 14, and the hook suspended at the tip of the rope 15 is used to chuck a steel sheet pile (not shown) to the chuck 32. It is built in the space 7 formed inside, and it is firmly chucked by the movable claws 8 and the fixed claws 9 with built-in chuck cylinders, and then the pile press-in / pull-out cylinders 6 and 6 are activated to perform the press-in work of the piles. To do.

The operation mode of the pile press-fitting / pulling machine when it is self-propelled will now be described. When the slide base 3 is slid to move the chuck frame 5 forward by one pitch of the pile, the pile base is automatically moved to the tip of the pile row. After press-fitting the pile for running, the clamp state of the existing pile by the reaction force clamp devices 2 and 2 is released while the pile is firmly chucked by the movable pawl 8 and the fixed pawl 9 provided on the chuck. Then, the base (clamp, saddle) is raised and the saddle 1 is slid forward along the slide base 3, and the pile (clamp, saddle) is lowered after moving forward by one pile. The existing piles are clamped by the force clamp devices 2 and 2, and then the pile press-fitting operation and the forward movement are repeated. Although not shown, the saddle 1 can be easily moved forward by disposing a moving cylinder between the slide base 3 and the saddle 1.

Next, during self-propelled movement at a site where there is little work space in the height direction, such as under a bridge, the following operation is performed in order to avoid collision between the crane and an obstacle such as a bridge girder. That is, the crane boom 11 is first tilted in the horizontal direction by driving the boom hoisting cylinders 13 and 13, and then the vertically moving cylinder 12 arranged below the crane support bracket 10 is driven to move the arrow in FIG. The crane boom 11 is entirely lowered in the A direction. The broken line in the figure shows the raised position of the crane boom 11, and the solid line shows the lowered position.

When the crane boom 11 is moved to the lowered position shown by the solid line, the upper surface of the crane boom 11 is substantially coincident with the upper surface of the chuck frame 5 or the upper surface of the base 4, so that the crane and the obstacle are prevented. It is possible to move by itself while avoiding the collision of. After completion of self-propelling, the vertical cylinder 12 is driven to raise the crane boom 11 in the direction of arrow B in FIG. 1, the piles are built by the crane, and press-fitting and self-propelled movement are repeated. Good.

Next, a second embodiment of the present invention will be described with reference to FIG. This example relates to the improvement of the mechanism for moving the crane boom 11 from the raised position shown by the phantom line to the lowered position shown by the solid line. That is, the swivel base 10a is arranged on the crane support bracket 10, and the links 18, 19 are bendably connected to the mounting base 17 provided on the swivel base 10a. A boom hoisting cylinder 20 is provided between them. The links 18 and 19 may be bent by selecting a known means such as a motor or a cylinder.

The boom hoisting cylinder 20 is an alternative to the hoisting cylinder 13 in the first embodiment, and when the crane boom 11 is changed from the raised position to the lowered position, the booms 18 and 19 of the links 18 and 19 are moved. By using the bending operation and the operation of the boom hoisting cylinder 20 together, the posture of the crane boom 11 can be easily corrected to the horizontal direction, and the crane boom 11 can be lowered as a whole in the same manner as in the above example. You can avoid the collision of.

FIGS. 5 and 6 show a third embodiment of the present invention, in which a tilting bracket 22 is pivotally supported by a mounting base 17 provided on the crane support bracket 10 via a shaft body 21. Further, the crane boom 11 is pivotally supported by the tilting bracket 22 via the shaft body 23. Reference numeral 24 is a boom tilt cylinder provided between the tilt bracket 22 and the crane support bracket 10, and 25 is a telescopic cylinder for the crane boom 11. The boom tilt cylinder 24 may not be used, but a motor may be used for the shaft body 21 portion to tilt the tilt bracket 22. For raising and lowering the crane boom 11, a known means such as a motor or a cylinder may be selected. In addition, the crane boom 11 is configured to be rotatable at a portion of the swivel base 33.

According to the third embodiment, as the boom tilting cylinder 24 is contracted, the tilting bracket 22 falls down to change the crane boom 11 from the raised position shown in FIG. 5 to the lowered position shown in FIG. As a result, the crane boom 11 can be easily lowered in its entire posture, and the crane boom 11 can be horizontally corrected to avoid a collision between the crane and an obstacle.

7 and 8 show a fourth embodiment of the present invention. In this example, a swivel base 10a is arranged on a crane support bracket 10, and a mounting provided on the swivel base 10a. A first crane boom 27 is pivotally supported by the base 17 via a shaft 26, and a second crane boom 29 is movably connected to the first crane boom 27 via a hinge 28. Reference numeral 30 is a hoisting cylinder provided between the mounting base 17 and the first crane boom 27, and 31 is a boom bending cylinder that connects the first crane boom 27 and the second crane boom 29. The first crane boom may be hoisted without using the boom hoisting cylinder 30 and using a motor for the shaft 26 to hoist the first crane boom 27.

According to the fourth embodiment, it is possible to change the first crane boom 27 from the lowered position to the raised position as the boom hoisting cylinder 30 shrinks, and further, the boom bending cylinder 31. The first crane boom 27 and the second crane boom 29 are bent or extended linearly around the hinge 28 by the expansion and contraction operation of the crane so that the posture of the crane boom can be easily corrected and the descent shown in FIG. The position can be changed to the rising position shown in FIG.

[0027]

[Effect of device]

 As described in detail above, according to the low floor type pile press-fitting / pulling machine with a crane according to the present invention, when there is an obstacle such as a bridge girder during the pile press-fitting work while running by itself in a river or under a bridge. Drive the boom hoisting cylinder to tilt the crane boom horizontally, and drive the vertical moving cylinder located under the crane support bracket to lower the crane boom as a whole to prevent the crane from colliding with obstacles. It is possible to pass while avoiding the collision of. Therefore, the crane is not laid sideways or backward, so that the rope wound around the sheave provided at the tip of the crane is prevented from coming off the sheave, and when the crane is returned to its original position again. Work can be resumed immediately.

Further, since it is possible to carry out the load hanging work even when the crane boom is entirely lowered, it is possible to obtain the effect that the work efficiency is not lowered. Therefore, according to the present invention, the low-floor pile press-fitting / pulling-out crane with a crane that can avoid the collision with an obstacle such as a bridge without causing the rope to come off due to the change in the posture of the crane and improve the work efficiency Machine can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of a low floor type pile press-fitting / pulling machine with a crane according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a partial side view showing a second embodiment of the present invention.

FIG. 5 is a partial side view showing an operation mode of a third embodiment of the present invention.

FIG. 6 is a partial side view showing another operation mode of the third embodiment.

FIG. 7 is a partial side view showing one operation mode of the fourth embodiment of the present invention.

FIG. 8 is a partial side view showing another operation mode of the fourth embodiment.

[Explanation of symbols]

 1 ... Saddle 2 ... Reaction force clamp device 3 ... Slide base 4 ... Base 5 ... Chuck frame 6 ... Pile press-in / pull-out cylinder 8 ... Movable pawl 9 ... Fixed pawl 10 ... Crane support bracket 11 ... Crane boom 12 ... Vertical movement cylinder 13, 20, 30 ... Boom up / down cylinder 14 ... Hoisting / lowering motor 15 ... Rope 16 ... Sheave 18, 19 ... Link 24 ... Boom tilting cylinder 25 ... Telescopic cylinder 27 ... First crane boom 29 ... Second crane boom 31 ... Boom bending cylinder 32 ... Chuck 33 ... Revolving base

Claims (7)

[Scope of utility model registration request] 1. A reaction force clamp device which is located below a saddle fixed on an existing pile and clamps the existing pile during work, and a reaction force clamp device which is above the saddle and which extends in the front-rear direction with respect to the saddle via a slide base. It has a base that is slidably mounted, a chuck frame that is arranged in front of the base and has a pair of press-fitting / pulling-out cylinders on both left and right sides, and a chuck that grips the pile that is arranged below the chuck frame. In the low-floor pile press-in / pull-out machine, the crane support bracket is fixed to one side of the base, and the crane boom can be vertically moved as a whole on the crane support bracket, and the crane boom can be raised and lowered. A low-floor pile press-in / pull-out machine with a crane. 2. The low floor type pile press-fitting / extracting machine with a crane according to claim 1, wherein the crane boom is vertically movable by driving a vertically moving cylinder. 3. A swivel base is disposed on a crane support bracket, a pair of links is bendably connected to a mounting base provided on the swivel base, and a boom is raised and lowered between one link and the crane boom. The low floor type pile press-fitting and extracting machine with a crane according to claim 1, wherein the crane boom is vertically movable as a whole by disposing a cylinder. 4. A tilt support bracket is provided on the crane support bracket, the tilt bracket is pivotally supported on the mount base via a shaft, and the crane boom is pivotally supported on the tilt bracket via the tilt bracket. 2. The low floor type pile press-fitting / extracting machine with a crane according to claim 1, wherein a boom tilting cylinder is provided between the crane support bracket and the crane support bracket so that the crane boom can be vertically moved as a whole. 5. A swivel is arranged on a crane support bracket, a first crane boom is pivotally supported by a mounting base provided on the swivel via a shaft, and a hinge is further attached to the first crane boom. The second crane boom so that it can be hoisted, and a boom hoisting cylinder is provided between the mounting base and the first crane boom, and a boom folding cylinder is provided between the first crane boom and the second crane boom. The low floor type pile press-fitting and extracting machine with a crane according to claim 1, wherein the crane boom is vertically movable as a whole. 6. The low-floor-type pile with press-fitting / pulling-out crane with a crane according to claim 1, 2, 3, 4, or 5, wherein when the crane boom is lowered, the upper surface of the crane boom is substantially level with the upper surface of the chuck frame. Machine. 7. The low floor type pile press-fitting and extracting machine with a crane according to claim 1, 2, 3, 4 or 5, wherein when the crane boom is lowered, the upper surface of the crane boom is substantially level with the upper surface of the base. .