JP6292831B2 - Pile driver and loader mounting method of pile driver - Google Patents

Description

The present invention relates to a pile driver and a mounting method for a pile driver , and more specifically, a small pile driver in which a counterweight, a hydraulic unit, and a power generation unit are mounted at the rear part of a base machine, and the mounted device of the pile driver. Regarding the method .

  A pile driver equipped with a counterweight, a hydraulic unit, and a power generation unit at the rear of the base machine is known. Normally, these counterweights and various units are mounted using a crane or a hydraulic excavator. In addition, a counterweight is lifted using an A frame provided in a large pile driver (see, for example, Patent Document 1), a traveling device is provided at the lower part of the hydraulic unit, and provided at the rear part of the base machine. It has been proposed to make the base stand self-propelled (see, for example, Patent Document 2). In particular, in a small pile driver, when the leader is tilted backward with the hydraulic unit mounted on the rear part of the base machine, the hydraulic unit and the leader interfere with each other, and the leader cannot be brought into a transported state. When transporting pile drivers, some hydraulic units had to be removed from the rear of the base machine.

JP-A-7-149498 JP 2000-31878 A

  However, it may be difficult to use a crane or a hydraulic excavator in a narrow place where only a small pile driver can be inserted. In addition, since a small pile driver does not have an A frame, a hydraulic unit However, even if it has a traveling device, there is a problem that a sufficient space for traveling cannot be taken.

Therefore, the present invention provides a pile driving machine and a pile that can attach and detach a counterweight and the like to the rear part of the base machine by operating a cylinder provided in the pile driving machine without using a crane or a hydraulic excavator. The purpose is to provide a mounting method for a hammer .

In order to achieve the above object, a pile driving machine according to the present invention includes a leader that can be raised and lowered at a front part of a base machine, and a pile driving machine that includes a mounting base at a rear part of the base machine. A leader support provided at the front to swing in the left-right direction of the base machine, a swing cylinder for swinging the leader support in the left-right direction of the base machine, and a support that can be raised and lowered in the front-rear direction of the base machine. A sub-leader, a reader hoisting cylinder having a base attached to the reader support, a main reader slidable in the longitudinal direction of the sub-leader, a reader slide cylinder for sliding the main reader with respect to the sub-reader, and the main A hanging bracket for mounting an object to be mounted on the mounting base provided at the upper end on the rear surface side of the reader. It is characterized by that example. In addition, the loader mounting method of the pile driver of the present invention is a method for mounting a loader of a pile driver for mounting a load on a mounting base provided at the rear part of a base machine equipped with a leader capable of being raised and lowered at the front part. In the above, the leader in a transported state lying down on the rear side of the pile driving machine is extended by a leader hoisting cylinder, the leader is raised to a predetermined angle, and the leader slide cylinder is extended to move the main leader to the rear of the pile driving machine. The slide position, standing angle, and swing state of the main leader are adjusted by operating the leader slide cylinder, the leader hoisting cylinder, and the swing cylinder that swings the reader in the lateral direction of the base machine. The mounting bracket for mounting the load provided on the upper end of the rear surface of the main reader is positioned above the mounting object, and the lifting bracket and the mounting object are lifted up. Of connected by wire ropes, is extended to the reader derricking cylinder lifting said payload to a predetermined height, by operating the swing cylinder, by swinging the reader to the right and left, the mounting and the mounting thereof It is characterized in that the main leader is moved downward by aligning with the gantry in the left-right direction and the leader slide cylinder is contracted, and the load is mounted on the mount gantry.

According to the onset bright, by operating the swing cylinder, the reader derricking cylinder and the reader slide cylinder, it is possible to adjust the position of the lifting lugs provided at the upper end portion of the main reader, counterweight and the hydraulic unit, A load such as a power generation unit can be lifted by a hanging bracket via a wire rope or the like. Accordingly, a load such as a counterweight can be attached to and detached from the mounting frame at the rear of the base machine by itself without using a crane or a hydraulic excavator.

It is a side view of the working state which shows one example of a pile driver of this invention. It is a front view which shows the principal part of a pile driver similarly. It is a side view which shows the preparatory stage at the time of mounting a hydraulic unit on the mounting stand. It is a side view which shows the step which lifts a hydraulic unit. It is a side view which shows the step which lifted the hydraulic unit. It is a rear view of the pile driver which shows the stage which is performing the position adjustment of the left-right direction of a hydraulic unit. It is a side view which shows the step which mounted the hydraulic unit on the mount frame.

  FIGS. 1 to 7 show an embodiment of the pile driving machine of the present invention. FIGS. 3 to 7 show the hydraulic pressure applied to the mounting base 13 provided at the rear part of the base machine 12 in the small pile driving machine 11. An example of a procedure for mounting the unit 14 is shown.

  First, in FIG. 1 and FIG. 2, a pile driving machine 11 includes a base machine 12 in which an upper turning body 16 is turnably provided on a lower traveling body 15 provided with a crawler via a turning bearing, and an upper turning body. A reader 20 that combines a sub-reader 18 that is slidably mounted via a reader support 17 provided at the front of 16 and a main reader 19 that is slidably provided on the front surface of the sub-reader 18, and the sub-reader 18 that supports the reader 17, a leader hoisting cylinder 21 that supports the hoisting from the rear part, a working device 23 such as an auger drive that moves up and down by being guided by a pair of left and right guide pipes 22 provided on the front side of the main leader 19, and a main leader 19 A lower brace 24 provided at the lower part on the front side of the front, a hanging metal fitting 25 provided at the upper part on the rear side of the main reader 19, and an upper The mounting base 13 provided in a state of projecting from the rear part of the revolving unit 16, the front jack 26 and the rear jack 27 provided respectively at four positions on the front, rear, left and right of the upper revolving unit 16, And a driver's seat 28 provided in the vehicle.

  The leader support 17 and the driver seat 28 are arranged with the leader support 17 on the right side and the driver seat 28 on the left side with respect to the center in the width direction of the upper swing body 16. It is made to be able to be transported along the upper turning body 16 by tilting backward.

  The leader support 17 is provided such that the lower part on the center side in the width direction of the upper swing body 16 is swingable in the left-right direction by a swing shaft 29 arranged with its axis line directed in the front-rear direction of the upper swing body 16. The tip of a swing cylinder 31 provided between the leader support 17 and the upper swing body 16 is attached to the tip of a cylinder connection bracket 30 that protrudes laterally from the lower right side of the support 17. . The leader support 17 is formed to swing in the left-right direction together with the leader hoisting cylinder 21 around the swinging shaft 29 by expanding and contracting the swinging cylinder 31.

  A lower bracket 33 protruding from the lower end portion of the sub-reader 18 is rotatably attached to the upper portion on the front side of the reader support 17 via a reader attachment shaft 32 arranged with its axis line directed in the left-right direction. A base portion of the leader hoisting cylinder 21 is attached to the upper part on the rear side of the leader support 17. The leader 20 is formed to be in an upright working state by extending the leader hoisting cylinder 21 and to be in a fallen transport state by shortening the leader hoisting cylinder 21.

  The sub-leader 18 and the main reader 19 slidably connect guide members 34 respectively provided at two positions on the front side of the sub-reader 18 and guide rails 35 provided in the longitudinal direction of the rear side of the main reader 19. Thus, the main reader 19 is assembled in a slidable state in the longitudinal direction of the sub reader 18. A base portion of a leader slide cylinder 36 for sliding the main reader 19 with respect to the sub reader 18 is attached to the sub reader 18, and a rod tip of the leader slide cylinder 36 is attached to a tip portion of the main reader 19. The main reader 19 is formed so as to slide toward the upper side of the sub reader 18 by extending the reader slide cylinder 36 and to slide toward the lower side of the sub reader 18 by shortening the leader slide cylinder 36.

  Further, a hose guide 37 is provided on the upper rear surface of the sub-leader 18, and a hydraulic hose 38 connected to the work device 23 is hung around. Further, the main reader 19 is provided with a lifting device 40 that lifts and lowers the work device 23 along the main reader 19 via a chain 39.

  When the pile driving work (ground improvement work) is performed using the pile driving machine 11 thus formed, the leader slide cylinder 36 is extended and the main leader 19 is slid above the sub leader 18 in the work start state. The working device 23 holding the middle part of the hollow rod 41 is raised to the uppermost part of the main reader 19. An excavation head 44 having an excavation blade 42 and a stirring blade 43 is attached to the lower end portion of the hollow rod 41, and a swivel joint (not shown) held by a detent rod 45 is attached to the upper end portion of the hollow rod 41. To the ground improvement agent injection hose 46.

  From this work start state, the ground improver (cement milk) is injected from the ground improver injection hose 46, and while rotating the hollow rod 41 by the work device 23, the work device 23 is moved below the main leader 19, The main leader 19 is slid below the sub-leader 18, and the gripping position of the hollow rod 41 by the working device 23 is switched to the upper side of the hollow rod 41 in the middle of the work. Are mixed with stirring blades 43. After lowering the excavation head 44 to a predetermined depth, the excavation head 44 is pulled up in the reverse procedure, thereby completing one operation. By performing this work, a pile in which earth and sand and ground improver are mixed and solidified is formed in the ground.

  Next, a procedure for mounting the hydraulic unit 14 on the mounting base 13 will be described with reference to FIGS. 3 to 7. First, the pile driver 11 operates the lower traveling body 15 in a transport state in which the leader hoisting cylinder 21 is shortened and the leader 20 is laid backward, and the pile driver 11 is placed at an appropriate position in front of the hydraulic unit 14. Is stopped (see FIG. 3). Next, the leader hoisting cylinder 21 is extended to elevate the reader 20 to a predetermined angle, and the leader slide cylinder 36 is extended to near the stroke end to cause the main reader 19 to protrude rearward.

  The suspension bracket 25 is positioned above the center of gravity of the hydraulic unit 14 by adjusting the slide position, standing angle, and swing state of the main reader 19, and the suspension bracket 25 and the hydraulic unit 14 are lifted by a predetermined length. Connect with a rope 47. Further, after the rear jack 27 is operated to stabilize the rear side of the upper swing body 16, the leader hoisting cylinder 21 is extended to elevate the reader 20 to a predetermined angle (see FIG. 4).

  Next, the leader hoisting cylinder 21 is extended to elevate the reader 20 to a predetermined angle at which the hydraulic unit 14 is lifted to a predetermined height (see FIG. 5). Then, by operating the swing cylinder 31 and swinging the reader 20 left and right via the reader support 17, the hydraulic unit 14 is aligned in the left-right direction (see FIG. 6). Finally, the leader slide cylinder 36 is contracted to move the main leader 19 downward, and the hydraulic unit 14 is mounted on the mounting base 13 in a predetermined state.

  In this way, by operating each cylinder of the pile driving machine 11 without using a crane or a hydraulic excavator, various loads such as a hydraulic unit 14 and a counterweight or a power generation unit can be mounted on the mounting platform 13. Can be mounted on. Further, by operating in the reverse procedure, the hydraulic unit 14 and the like can be removed from the mounting base 13, and various mounting objects can be attached to and detached from the mounting base 13 by themselves.

  The present invention is particularly suitable for a small pile driver, but can also be applied to a medium-sized pile driver, and an article to be mounted on a mounting base is arbitrary.

DESCRIPTION OF SYMBOLS 11 ... Pile driver, 12 ... Base machine, 13 ... Mounting platform, 14 ... Hydraulic unit, 15 ... Lower traveling body, 16 ... Upper turning body, 17 ... Leader support, 18 ... Subleader, 19 ... Main leader, 20 ... Leader, 21 ... Leader hoisting cylinder, 22 ... Guide pipe, 23 ... Working device, 24 ... Lower armrest, 25 ... Suspension bracket, 26 ... Front jack, 27 ... Rear jack, 28 ... Driver's seat, 29 ... Swing shaft, DESCRIPTION OF SYMBOLS 30 ... Cylinder coupling bracket, 31 ... Swing cylinder, 32 ... Leader attachment shaft, 33 ... Lower bracket, 34 ... Guide member, 35 ... Guide rail, 36 ... Leader slide cylinder, 37 ... Hose guide, 38 ... Hydraulic hose, 39 ... Chain, 40 ... Lifting device, 41 ... Hollow rod, 42 ... Excavation blade, 43 ... Agitation blade, 44 ... Excavation head, 45 ... Non-rotating rod, 6 ... ground improvement agent injection hose, 47 ... wire rope

Claims (2)

  In the pile driving machine provided with a mounting base at the rear part of the base machine and provided with a leader at the front part of the base machine, it is provided at the front part of the base machine so as to be swingable in the lateral direction of the base machine. A reader support; a swing cylinder that swings the reader support in the lateral direction of the base machine; a sub-reader that is provided on the leader support so as to be able to undulate in the longitudinal direction of the base machine; A cylinder, a main reader provided so as to be slidable in the longitudinal direction of the sub-leader, a reader slide cylinder for sliding the main reader with respect to the sub-leader, and the mounting platform provided at the upper end on the rear surface side of the main reader A pile driving machine characterized by comprising a hanging metal fitting for mounting a load on the vehicle. In the loader mounting method of the pile driver that mounts the load on the mounting base provided at the rear of the base machine equipped with a leader capable of undulating at the front,
Extending the leader hoisting cylinder to elevate the leader hoisting cylinder, and extending the leader slide cylinder to extend the main leader to the rear of the piling machine. Let
By adjusting the leader slide cylinder, the leader raising / lowering cylinder, and the swing cylinder for swinging the reader in the lateral direction of the base machine, the slide position, standing angle, and swing state of the main reader are adjusted, and the main reader A mounting bracket for mounting objects provided on the upper end of the rear surface is positioned above the mounting object, and the mounting bracket and the mounting object are connected by a wire rope for lifting,
Is extended to the reader derricking cylinder lifting said payload to a predetermined height, by operating the swing cylinder, by swinging the reader to the right and left, the right and left direction between the mounting frame and the mounting thereof A loader mounting method for a pile driving machine, wherein alignment is performed and the leader slide cylinder is contracted to move the main leader downward, and the loader is mounted on the mounting frame.

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