JP2546175Y2 - Land sand pile driver with movable leg - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a land sand pile driving machine with movable legs, which is applied to the improvement of soft ground on land and has a feature of a turning mechanism.

(Prior Art) A conventional example of a land sand pile driver will be described with reference to FIG.
Base frame (3) equipped with a pair of crawlers (2)
A crawler crane-improved bogie (1) in which a revolving frame (4) is rotatably arranged by interposition of a revolving device (not shown), and a sand pile driving machine mounted on the bogie (1) The apparatus includes a power source (5) including a generator, a compressor, and the like on a revolving frame (4), a leader (7) with a backstay (7a) erected in front of the revolving frame (4), a revolving frame ( 4) A wire rope (6a) unwound from the upper winch (6) and arranged via a sheave above the leader, and the leader (7) suspended from the end of the wire rope (6a) via a shock absorber (8). ) And a casing pipe (10) gripped by the vibratory hammer (9) and driven into the soft ground to drive a sand pile, etc. Of traveling and swiveling frames on soft ground Times by the casing pipe (10) and arranged at a desired position, for pouring a large number of sand pile to soft in the ground.

(Problem to be Solved by the Invention) The conventional land sand pile driving machine has a pair of crawlers formed by a wide shoe, and the crawlers can generally easily move forward and backward by the crawlers. The crawler on one side is stopped either by stopping the crawler on one side and driving the crawler on the other side, or by driving both crawlers in the opposite direction. Along with
If the sand pile is driven in a straight line at the desired interval by repeating the backward movement of the bogie, the straightness gradually deteriorates and it becomes difficult to correct the straight traveling, and the same applies when changing the sand pile row,
There are problems in that the operation of the bogie is difficult, and it takes a lot of trouble and time, which causes a reduction in work efficiency.

The present invention has been developed in order to address the above-described problems, and its purpose is to extend a plurality of movable legs disposed below a peripheral portion of a platform.
It is an object of the present invention to provide a land sand pile driving machine with a leg capable of improving lateral movement performance and enhancing stability of an airframe by lifting a crawler by grounding a buoyancy plate and turning a crawler by a turning device.

(Means for Solving the Problems) According to the present invention, a platform is disposed on a base frame equipped with a crawler so as to be relatively rotatable by interposition of a revolving device, and is disposed below a peripheral portion of the platform. A plurality of movable legs for raising and lowering the crawler via the platform due to expansion and contraction are provided, and a buoyancy plate for preventing settlement is attached to a lower portion of each movable leg, and a sand pile driving device is mounted on the platform. The crawler can be lifted by the extension of a plurality of movable legs arranged below the peripheral edge of the platform and the grounding of each buoyancy plate, and the turning of the base frame and the crawler by the turning device. Thus, the platform and the sand pile driver can be moved laterally without turning, and the airframe on soft ground is stabilized.

(Operation) When a plurality of movable legs disposed below the periphery of the platform are extended, each floating plate attached to the lower portion of each movable leg is grounded on the soft ground, and the platform, the turning device, and the base are mounted. The frame and each crawler are lifted and levitated, and the base frame and each crawler are swiveled with respect to the platform by the swivel device. When each movable leg is shortened, each crawler is grounded and the crawler is laterally moved by each crawler. When extending each movable leg,
Each crawler is similarly lifted by the grounding of each buoyancy plate and returned by reverse turning, each crawler is grounded by shortening of each movable leg, and the lateral movement is completed, and the lateral movement is performed by the platform and sand pile driving device. It is easily and quickly performed without turning and with a series of operations.

In addition, when the sand pile is driven, the body is stabilized and supported by the grounding of the buoyancy plates together with the grounding of the crawlers, so that the work is smoothly performed.

(Embodiment) FIGS. 1 to 6 show one embodiment of the present invention, in which (12) is a crawler, (13) is a base frame on which a pair of crawlers are mounted, and (14) is a swivel. Device, (15) is a platform, (16) is a movable leg that can be telescopically operated,
(17a) and (17b) are buoyancy plates for preventing subsidence. A platform (15) is provided on a base frame (13) equipped with crawlers (12) and (12) by interposition of a turning device (14). A plurality of movable legs (16) which are disposed so as to be relatively rotatable and which are disposed below the peripheral edge of the platform (15) and which move up and down the crawlers (12) and (12) via the platform (15) by expansion and contraction. , Buoyancy plates (17a) and (17b) are attached to the bottom of each movable leg (16) to prevent settlement, and a sand pile driving device is mounted on a platform (15). It is a hammer.

The crawlers (12) (12) have a wide width as shown in FIGS. 2 to 6, and have a base frame (13).
Carrier rollers (21) and track rollers (2
2) group, arranged through sprockets (23) (23),
Driven in the forward and reverse directions by the travel motor (24) and individually circulated.

As shown in FIGS. 2 to 6, the turning device (14) includes an upper frame portion (13) at the center of the base frame (13).
a) and a rotary joint (25) connected between the center of the platform (15) and a bolt (26) below the platform (15) as shown in Figs. Installed outer cylinder (27a) and bolts (2
6) Ball bearing (28) fixed inside outer cylinder (27a)
The inner cylinder (27b), which is rotatably fitted with an intermediary, and the hydraulic motor (2) attached to the lower part of the platform (15)
9) The drive spur gear (30b) and the like meshed with the internal gear (30a) on the side of the inner cylinder (27b) driven by the inner frame (27b). ) And the platform (15) are relatively turned around the rotary joint (25).

As shown in FIGS. 1, 2, and 3, the movable leg (16) is pivotally connected to four lower corners of the platform (15) by pins (31) and is operated by a hydraulic cylinder which is operated to expand and contract. Buoyancy plate (17a) or (17b) on each lower part to prevent settlement
The front side (leader side) of the platform (15) is a pair of movable legs (16) and (16), respectively.
A buoyancy plate (17a) with a large supporting area is installed between the lower parts of both movable legs (16) and (16), and the front of the platform (15) where the load of the sand pile driving device is concentrated Greatly increases the supporting force, stabilizes and supports the platform (15) and sand pile driving device.

As shown in FIGS. 1 and 2, the sand pile driving device includes a power source (33a) including an air tank (33a), a compressor (33b), a generator (33c) and the like disposed on a platform (15). , b, c), a leader (3) pivotally mounted on the front of the platform (15), standing upright and attached with a stay (34a).
4), a pile winch (35) arranged on the platform (15), a wire rope (36) unreeled from the pile winch (35) and arranged via the sheave (36a) above the leader (34), A shock absorber (37) connected to the end of the wire rope (36), a vibratory hammer (3) suspended by the shock absorber (37) and guided up and down by the reader (34)
8), a casing pipe (39) that is gripped by a vibro hammer (38) and is driven into soft ground to drive a sand pile (the mechanism for driving a sand pile using the pipe is based on a conventional example), a skip (40), etc. In other words, the function of placing sand piles is the same as before.

(41) shown in FIGS. 1 and 2 is an operation room, and (42) is a counterweight.

The embodiment of the present invention is configured as described above,
Crawlers (12), (12) are driven forward and backward, each movable leg (16) is extended, and each buoyancy plate (17a) (17b) is brought into contact with soft ground, so that the whole is stable and fixed,
The sand pile driving device drives the sand pile into the soft ground in the same manner as in the past.

In the case of lateral movement, when each movable leg (16) is extended, the platform (15) is raised, and by this rise, the turning device (14), the base frame (13), the crawler (12) (1)
2) Ascends and rises from the soft ground, and when the drive spur gear (30b) is rotated by the hydraulic motor (29) of the turning device (14), the inner cylinder (27b) and the base frame (13) are rotated via the internal gear (30a). ) And the crawlers (12) and (12) are swiveled together,
When the direction of the crawlers (12) and (12) is turned by 180 ° and each movable leg (16) is shortened, the crawler (12)
(12) is grounded on soft ground, and then each buoyancy plate (17
a) (17b) rises and floats, crawler (12) (12)
Is moved laterally in the right angle direction. In addition, each movable leg (16) is extended, each buoyancy plate (17a) (17b) touches the soft ground, the crawlers (12) (12) rise, and the turning device (14) turns in the opposite direction. The lateral movement ends when the crawlers (12) and (12) touch the ground by shortening each movable leg.

The lateral movement is performed by adjusting the turning angles of the base frame (13) and the crawlers (12) and (12) with respect to the platform (15), so as to be perpendicular or at a desired angle to the front-rear direction of the platform (15). The horizontal movement in the direction is adjusted freely, and the base frame (13), the crawler (12) (12) (12) are not turned without turning on the platform (15) on which the sand pile driving device having a long leader etc. is mounted. ) Side only, and the power source (air tank 33a, compressor 33) disposed on the platform (15)
b, the power of the generator 33c) is controlled in series by an appropriate control mechanism (not shown) disposed in the operation room (41). 15) The sand pile driving device can be moved quickly and easily in a very stable condition.

The land sand pile driver placed at a desired position on the soft ground,
In addition to the ground support force of the pair of crawlers (12) and (12), each buoyancy plate (17a) (17b) of a plurality of movable legs (16) disposed below the peripheral portion of the platform (15) Excellent grounding support force has been added, greatly improving the stability of the fuselage during the work of driving sand piles, and improving the lateral movement performance as well as the work efficiency.

(Effect of the Invention) The present invention is configured as described above, and the buoyancy plate attached to the lower part of each movable leg by extending a plurality of possible legs disposed below the peripheral edge of the platform. Is grounded, the crawler is lifted through the platform,
The crawler is swiveled together with the base frame with respect to the platform by the swivel device, each crawler is grounded by shortening each movable leg, and is laterally moved by driving each crawler, and each buoyancy plate is extended by extending each movable leg. Lateral movement is achieved by touching down, lifting each crawler and turning in the opposite direction, and shortening each movable leg, making it easy and quick to move laterally on soft ground without turning the platform and sand pile driver. As a result, the lateral movement performance and operation reliability have been remarkably improved.

Furthermore, the body is stabilized by the grounding of each floating plate together with each crawler, sand pile construction is smoothly performed, and work efficiency is greatly improved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention, and FIG.
FIG. 3 is a side view of the lower part of the platform in FIG. 1 after the main part is enlarged, FIG. 4 is an enlarged side view of the base frame part of the lower part of the platform, and FIG. FIG. 6 is an enlarged plan view showing a part of the part, and FIG. 6 is a VI-V of FIG.
7 (A) and 7 (B) are a side view and a front view of a conventional example. 12: Crawler, 13: Base frame 14: Swivel device, 15: Platform 16: Movable leg, 17a, 17b: Buoyancy plate 33,… 40: Sand pile driving device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Takashi Yagi 1-1-1, Wadazakicho, Hyogo-ku, Hyogo-ku, Kobe City, Hyogo Prefecture Inside the Kobe Shipyard of Mitsubishi Heavy Industries, Ltd. 119 Nippon Kaiiko Co., Ltd. (72) Inventor Tetsuo Iwasaki 119 Nippon Kaiiko Co., Ltd., Chuo-ku, Kobe City, Hyogo Prefecture

Claims (1)

(57) [Scope of request for utility model registration] A platform is provided on a base frame equipped with a crawler so as to be relatively rotatable by interposition of a rotating device, and the platform is disposed below a peripheral edge of the platform and is expanded and contracted to expand and contract the platform. A plurality of movable legs for raising and lowering the crawler through the movable legs, a buoyancy plate for preventing settlement is mounted below each of the movable legs, and a sand pile driving device is mounted on the platform. Land sand pile driver with movable leg.