JP6746207B2 - Pile driver and pile driver loading method - Google Patents

Description

The present invention relates to a pile driver and a method of loading the pile driver, and more specifically, for loading a large pile driver that removes a leader or a crawler from a base machine for transportation and a base machine of the pile driver on a bed. Regarding loading method.

A pile driver is generally provided with an upper revolving structure capable of revolving above a lower traveling structure provided with a crawler, and a leader provided on a front bracket provided at a front portion of the upper revolving structure capable of undulating. It has a configuration in which an engine serving as a drive source, a winch, a control device, and the like are mounted on the upper swing body. A small to medium-sized pile driver can be loaded on a bed of a low-floor trailer and transported by tilting the leader toward the rear of the upper swing body (see, for example, Patent Document 1).

However, when transporting a large pile driver, in order to clear the transportation restrictions such as size and weight, in order to make the base machine consisting of the lower traveling body and the upper revolving structure transportable, a leader, a front bracket, etc. The crawler is removed from the undercarriage depending on the weight and width. However, if the crawler is removed from the undercarriage, it will not be able to run on its own, so it will be necessary to hoist it with a crane when loading and unloading it from the loading platform, but since it is a heavy load, a large crane is required. There was such a problem. For this reason, some crawler cranes are provided with jack-up devices at two positions respectively on the front and rear sides of the truck frame in the lower traveling body, and by using the jack-up devices, the crawler can be expanded/contracted and attached/detached, or the crawler can be attached to or removed from the loading platform. It is known that the base machine can be moved up and down when loading and unloading (for example, refer to Patent Document 2).

JP, 2005-178733, A JP, 2006-16208, A

On the other hand, large pile drivers have front jacks and rear jacks (outrigger jacks) in front of and behind the upper revolving structure, so use these jacks to raise the base machine when attaching and detaching crawlers. It can be carried out by Further, by sufficiently raising the base machine with these jacks, the base machine can be loaded/unloaded on/from the loading platform. However, the front jack is attached to the front bracket provided at the front end of the upper swing body, and the front bracket has a strong structure for supporting the leader so that it can be undulated and tilted. Since it is large and heavy, it is not possible to load the base machine with the front bracket mounted on the bed to run. Therefore, it is necessary to attach and detach the front bracket on the loading platform, but it is extremely difficult to attach and detach the large and heavy front bracket on the loading platform.

Further, it is conceivable to provide the jack-up device at each of the front and rear two positions of the track frame like the crawler crane, but the cost is increased because the jack-up devices are provided at the four positions. In addition, since the gap between the jack-up devices cannot be sufficiently wide, there is a problem in stability when the base machine of the large-sized pile driver is lifted.

Therefore, the present invention provides a pile driver equipped with a structure that can easily perform the work of loading and unloading the base machine with the leader and the crawler removed, and also provides the pile driver. An object of the present invention is to provide a method for loading a pile driving machine for loading the machine on a bed.

To achieve the above object, pile driver of the present invention is turning, the lower traveling body comprising a pair of left and right is provided detachably on the track frame and track frame crawler, and, on top of the lower traveling body A base machine composed of an upper revolving structure which is provided so as to be able to move, a front bracket which is detachably provided at a front portion of the upper revolving structure, a leader which is provided at a front end of the front bracket so as to be capable of undulating, and the front. a front jack provided on both sides of the bracket, said a upper slewing body pile driver provided with a outrigger jack provided on the rear portion of the front portion and the rear portion of the track frame in the lower traveling body The base machine is equipped with one jack device for loading and unloading.

Further, in the pile driving machine of the present invention, the jack device is attached to a front portion or a rear surface portion of the track frame so as to be horizontally rotatable, and to a tip portion of the rotating arm. And a jack cylinder provided with the jack cylinder, wherein the jack cylinder is turned by the turning arm in a state in which the front surface portion and the rear surface portion of the truck frame are directed to a side of the cargo carrier bed. It is characterized in that it is formed so as to be movable between a loading/unloading position located on the outer side of the container and a storage position within the width of the bed of the transport vehicle.

In addition, the jack cylinder can be tilted with respect to the tip end portion of the rotating arm in a loading/unloading direction in which the axis of the jack cylinder is oriented in the vertical direction and a storage direction inclined with respect to the loading/unloading direction. The rotating arm is provided at a position deviated to one side in the width direction with respect to the center of the front surface or the rear surface of the track frame in the width direction. ..

Further, the loading process of pile driver of the present invention includes a lower traveling body having a pair of left and right is provided detachably on the track frame and track frame crawler, and pivotably to the upper portion of the lower traveling body A base machine including an upper revolving structure provided, a front bracket removably provided at a front portion of the upper revolving structure, a leader movably provided at a front end of the front bracket, and a front bracket of the front bracket. A method for loading a pile driving machine, comprising a front jack provided on each side surface and an outrigger jack provided on a rear portion of the upper revolving structure, the method comprising: removing the leader from the front bracket; a step of removing the crawler from the track frame while being stretched a jack and outrigger jacks, after the track frame is rotated 90 degrees for the upper revolving structure, respectively the front part and the rear part of the track frame 1 A base machine provided with a base machine for loading and unloading the jack device is moved from the storage position to the unloading position and then extended to support the base machine with the outrigger jack and the jack device, and the front bracket is removed from the upper swing body. A step of further extending the outrigger jack and the jack device to raise the base machine, a step of advancing a cargo bed of the transport vehicle below the raised base machine, and a step of shortening the outrigger jack and the jack device. The step of placing the base machine on the bed of the transport vehicle and the step of returning the jack device from the loading/unloading position to the storage position are sequentially performed.

According to the present invention, by using the jack machine for loading and unloading the base machine provided on the truck frame and the outrigger jack, loading and unloading to and from the loading platform of the transport vehicle can be easily performed in a stable state. Since a crane for unloading is not required and front brackets are not required to be attached and detached on the loading platform, the cost for transporting a large pile driver can be reduced.

It is a side view of a working state showing an example of one form of a pile driver of the present invention. It is a side view of a base machine which removed a leader and a back stay. Similarly, it is a front view. It is a side view of a base machine which shows a crawler attachment and detachment state. It is a side view of a base machine which shows a front bracket attachment and detachment state. It is a side view which shows the outrigger jack attachment/detachment state of the base machine loaded on the loading platform. FIG. 7 is a sectional view taken along line VII-VII of FIG. 6. It is a VIII-VIII sectional view of FIG.

1 shows a pile driver and a loading method of the present invention, and FIG. 1 shows a pile driver in a working state. The pile driving machine 11 is provided on a base machine 14 including a lower traveling body 12 and an upper revolving body 13 rotatably provided above the lower traveling body 12, and detachably provided on a front portion of the upper revolving body 13. Of the front bracket 15, a leader 16 provided on the front end of the front bracket 15 so as to be capable of undulating, a pair of left and right front jacks 17 provided on both side surfaces of the front bracket 15, and the upper swing body 13. A pair of left and right outrigger jacks 18 removably provided at the rear part, a pair of left and right back stays 19 for supporting the reader 16 from the rear part of the upper revolving structure 13, and a bend provided above the rear part of the upper revolving structure 13. With a possible gantry 20.

A working device such as an auger (not shown) is provided on the front surface of the leader 16 so as to be able to move up and down along the leader 16, and each wire wound around a plurality of winch drums mounted on the upper swing body 13 can be wound up. By unwinding and operating the hydraulic unit mounted on the upper swing body 13, various work including lifting and lowering of the working device is performed.

The undercarriage 12 has a track frame 21 and a pair of left and right crawlers 22 that are detachably provided on the track frame 21, and the track frame 21 supports a swivel bearing that supports the upper swivel 13. A center member 24 provided with 23 and a pair of front and rear axle members 25, 25 provided in front and rear of the center member 24, respectively, are formed in a substantially H shape in a plan view (see FIG. 7 ). At both ends of the axle member 25, crawler mounting portions 25a that are inserted into mounting holes 22b formed in the frame 22a of the crawler 22 are provided, respectively.

As shown in FIGS. 7 and 8, on the front surface portion 21a and the rear surface portion 21b of the truck frame 21, there are jack devices 26 for loading and unloading the base machine used when loading and unloading the base machine 14 onto the bed of the transport vehicle. One is provided for each. The jack device 26 includes a rotating arm 27 attached to the front surface portion 21 a or the rear surface portion 21 b of the track frame 21, and a jack cylinder 28 attached to the tip end portion of the rotating arm 27.

The rotating arm 27 is horizontally attached to a U-shaped arm bracket 29 fixed to a position displaced leftward from the center of the front surface portion 21a or the rear surface portion 21b of the track frame 21 by a vertical rotating shaft 30. The rotation arm 27 is rotatably attached, and a locking hole 27a corresponding to the fixing holes 31a and 31b provided on the upper side member 29a of the arm bracket 29 is provided at the upper end of the base end of the rotation arm 27.

Therefore, the rotating arm 27 is fixed at the storage position in a state along the front surface portion 21a or the rear surface portion 21b by inserting the fixing pin 32 by aligning the locking hole 27a with the one fixing hole 31a and locking. By inserting the fixing pin 32 by aligning the hole 27a with the other fixing hole 31b, the fixing pin 32 is fixed at the loading/unloading position in a state of projecting at a right angle to the front surface portion 21a or the rear surface portion 21b. By forming in this way, both jack cylinders 28, 28 can be accommodated within the width of the bed of the transport vehicle in the storage position, and at the loading/unloading position, the distance between the two jack cylinders 28, 28 can be kept close to that of the transport vehicle. The spacing can be wider than the width of the bed.

Further, a vertical tilting protrusion 28a is provided at the center of the cylinder of the jack cylinder 28, and a locking protrusion 28b is provided above the cylinder with respect to the tilting protrusion 28a. An upper part of the tilting projection piece 28a is attached to be tiltable in the vertical direction by a horizontal tilting pin 33 provided on an upper end of the rotating arm 27, and a lower part of the tilting projection piece 28a is pivoted. An engaging hole 28c corresponding to the fixing hole 27b provided at the lower end of the arm 27 is provided. Further, a fixed projection piece 27c corresponding to the locking projection piece 28b is provided on the upper surface of the rotating arm 27, and the fixing pin 34 is inserted into the locking projection piece 28b and the fixed projection piece 27c. Pin insertion holes 28d and 27d are provided respectively.

Therefore, by inserting the fixing pin 34 by aligning the pin insertion hole 28d of the locking projection 28b and the pin insertion hole 27d of the fixed projection 27c, the jack cylinder 28 can be fixed in a tilted state and used for tilting. By inserting the fixing pin 34 by aligning the locking hole 28c of the projecting piece 28a with the fixing hole 27b of the rotating arm 27, the jack cylinder 28 can be fixed in a state of being oriented in the vertical direction.

The jack device 26 during the operation of the pile driver 11 is fixed in a retracted state in which the turning arm 27 is along the front surface portion 21a or the rear surface portion 21b of the track frame 21 and the jack cylinder 28 is inclined. (See FIG. 3).

Next, a procedure for transporting the pile driver 11 in the working state will be described with reference to FIGS. 4 to 8. First, as in the conventional case, in order to clear the transportation restrictions such as size and weight, the leader 16, the back stay 19, the counterweight, etc. are removed from the base machine 14 and the gantry 20 is bent. Then, as shown in FIG. 4, the front jack 17 and the outrigger jack 18 are extended to raise the base machine 14 to make the crawler 22 detachable, and the crawler 22 is removed from the axle member 25. Up to this point, the procedure is similar to the conventional procedure. Further, a spacer 35 is arranged below the ground plates of the front jack 17 and the outrigger jack 18 as needed.

As shown in FIG. 5, after removing the crawler 22, a turning operation is performed to rotate the track frame 21 by 90 degrees with respect to the upper turning body 13. At this time, the rotation direction of the track frame 21 is set so that the jack device 26 for loading and unloading the base machine is located on the front side of the base machine 14. Further, the fixing pin 32 is pulled out from the locking hole 27a and one of the fixing holes 31a, and the rotating arm 27 is horizontally rotated about the rotating shaft 30, so that the front surface portion 21a or the rear surface portion 21b of the track frame 21 is rotated. After being rotated from the storage position along the front side portion 21a or the rear side portion 21b of the track frame 21 to a loading/unloading position that projects outward at a right angle, the fixing pin 32 is fixed to the locking hole 27a and the other side. The rotary arm 27 is fixed to the loading/unloading position by inserting it into the hole 31b.

Further, the fixing pin 34 is pulled out from the pin insertion holes 28d, 27d of the locking projection 28b and the fixing projection 27c, and the jack cylinder 28 is rotated in the vertical direction around the tilting pin 33 to fix the fixing hole 27b and the locking. The jack cylinder 28 is fixed in the vertical direction by inserting the fixing pin 34 into the hole 28c. Then, the jack cylinder 28 is extended so that the base machine 14 is supported by the jack cylinder 28 and the outrigger jack 18, and then the front jack 17 is shortened and the front bracket 15 including the front jack 17 is attached to the upper swing body 13. Remove from. Further, the jack cylinder 28 and the outrigger jack 18 are extended to raise the base machine 14 to a position higher than the loading platform 36 of the transport vehicle, and the transport vehicle is backed to let the loading platform 36 enter below the base machine 14. Further, a spacer 37 is also arranged below the ground plate of the jack cylinder 28, if necessary.

As shown in FIGS. 6 to 8, after a predetermined fixing jig 38 is installed on the loading platform 36, the jack cylinder 28 and the outrigger jack 18 are shortened to load the base machine 14 on the loading platform 36, and then the outrigger jacks are loaded. 18 is removed from the upper revolving structure 13, and the fixing pins 32 and 34 are inserted and removed to fix the jack cylinder 28 to the storage state in which the vertical loading and unloading state is inclined and then the rotating arm 27 is retracted. Return to the position and fix. As a result, the jack device 26 can be housed within the width of the cargo bed 36. Further, the outrigger jack 18 can be left attached to the upper swing body 13 depending on the shape and weight.

Thus, by using the jack devices 26 for loading and unloading the base machine provided on the front surface portion 21a and the rear surface portion 21b of the track frame 21, the base machine 14 with the crawler 22 removed can be easily placed on the loading platform 36. Can be loaded. Further, the front bracket 15 can be easily removed on the ground. By performing such a procedure in reverse, the pile driver that has been disassembled and transported can be assembled. Further, since the jack cylinder 28 is tiltably attached to the rotating arm 27 rotatably provided on the track frame 21, the jack device 26 can be integrated with the base machine 14, so that the loading/unloading work can be performed more easily. It can be carried out. Further, since the jack device 26 is provided in the eccentric position, the distance from the outrigger jack 18 can be increased, so that the base machine 14 can be supported in a stable state.

The jack device may be detachably provided on the front surface portion and the rear surface portion of the track frame. Further, the jack cylinder can be supported by a direct-acting arm that can be retracted in and out of the track frame instead of the rotating arm, and the tilting structure can be omitted depending on the length of the jack cylinder with respect to the height of the track frame. It is also possible.

11... Pile driver, 12... Lower traveling body, 13... Upper swing body, 14... Base machine, 15... Front bracket, 16... Leader, 17... Front jack, 18... Outrigger jack, 19... Back stay, 20... Gantry , 21... Track frame, 21a... Front part, 21b... Rear part, 22... Crawler, 22a... Frame, 22b... Mounting hole, 23... Slewing bearing, 24... Center member, 25... Axle member, 25a... Crawler mounting part, 26... Jack device, 27... Rotating arm, 27a... Locking hole, 27b... Fixing hole, 27c... Fixing projection piece, 27d... Pin insertion hole, 28... Jack cylinder, 28a... Tilt projection piece, 28b... Locking Projecting piece, 28c... Locking hole, 28d... Pin insertion hole, 29... Arm bracket, 29a... Upper side member, 30... Rotating shaft, 31a, 31b... Fixing hole, 32... Fixing pin, 33... Tilt pin, 34... Fixing pin, 35... Spacer, 36... Loading platform, 37... Spacer, 38... Fixing jig

Claims (5)

Lower traveling body and a pair of left and right is provided detachably on the track frame and track frame crawler and a base machine comprising an upper slewing body provided rotatably on the top of the lower traveling structure, wherein A front bracket detachably attached to the front part of the upper revolving structure, a leader foldable on the front end of the front bracket, front jacks provided on both side surfaces of the front bracket, and the upper portion. a pile driver provided with a outrigger jack provided on the rear portion of the swing body, the front portion and the rear portion of the track frame in the lower traveling body, provided with a jack device for loading and unloading the base machine by one group, respectively A pile driver that is characterized. The jack device includes a rotary arm rotatably mounted in a horizontal direction on a front surface portion or a rear surface portion of the track frame, and a jack cylinder mounted on a tip portion of the rotary arm. The cylinder is a loading/unloading position located outside the cargo bed of the transport vehicle by the rotation of the rotating arm in a state where the front surface portion and the rear surface portion of the truck frame are directed to the side of the cargo bed of the transportation vehicle. The pile driving machine according to claim 1, wherein the pile driving machine is formed so as to be movable to a storage position within the width of the carrier of the transportation vehicle. The jack cylinder is attached to the tip of the rotating arm so as to be tiltable in a loading/unloading direction in which the axis of the jack cylinder is oriented in the vertical direction and a storage direction inclined with respect to the loading/unloading direction. The pile driving machine according to claim 2, wherein 4. The rotating arm is provided at a position deviated to one side in the width direction with respect to the center of the front surface portion or the rear surface portion of the track frame in the width direction, respectively. Pile driver. Lower traveling body and a pair of left and right is provided detachably on the track frame and track frame crawler and a base machine comprising an upper slewing body provided rotatably on the top of the lower traveling structure, wherein A front bracket detachably attached to the front part of the upper revolving structure, a leader foldable on the front end of the front bracket, front jacks provided on both side surfaces of the front bracket, and the upper portion. A loading method for a pile driver, comprising: an outrigger jack provided at a rear portion of a revolving structure, wherein the track frame is in a state where the leader jack and the outrigger jack are extended after the leader is removed from the front bracket. a step of removing the crawler from, after rotating the track frame 90 degrees for the upper revolving structure, the jack device for loading and unloading base machine provided one group respectively the front part and the rear part of the track frame Moving the storage position to the loading/unloading position and then extending it to support the base machine with the outrigger jack and the jack device; removing the front bracket from the upper swing body; and further extending the outrigger jack and the jack device. And raising the base machine, advancing the loading platform of the transport vehicle below the raised base machine, and shortening the outrigger jack and the jack device to place the base machine on the loading platform of the transport vehicle. And a step of returning the jack device from the loading/unloading position to the storage position in sequence.

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