JPS63709Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a simple prefabricated crane in which an upper rail for running a hoist is supported on the upper ends of left and right columns that stand on a platform such as a traveling truck, and a hoist is supported on the upper rail so that the hoist can run freely. Regarding the support structure.

Conventionally, this type of easy-to-assemble crane has been used for transportation,
For the convenience of assembly work, a pair of left and right columns are constructed with female and male insertion joints in two parts, the upper column and the lower column, and the upper section of one column is fixed to the upper rail. It is strung with wires from the front and back directions.
However, with this conventional crane, when the connected body consisting of the upper crane, the upper part of a pair of columns, and the hoist is lifted up by the crane and lowered to a desired location during assembly, disassembly, or transportation, the plug-in joint at the top of the column becomes clogged with earth and sand. However, it was often difficult to connect the hoist to the lower part of the support, or the hoist was pressed against the surface of the site, causing problems with the running section.

The present invention provides a support structure for a simple prefabricated crane that can eliminate the drawbacks of the conventional crane, and will be described in detail below with reference to the drawings.

In Figures 1 and 2, pillars 3, 3 made of square cylinders are vertically connected to the upper surfaces of the central parts of left and right carts 1, 1 having wheels 2, 2 at the front and rear, respectively, and are removably connected to the left and right carts. Both ends of an upper rail 4 made of shaped steel are fixed to the upper ends of the supports 3, 3, and a hoist 5 is supported on the upper rail 4 so as to be freely movable.

The columns 3, 3 are composed of a short upper column 3a fixed to the upper rail 4 and a long lower column 3b detachably connected to the truck 1.
A male insertion part 6 is provided inside from the upper end surface of the lower column 3b, and a female insertion part 7 is provided inside from the upper end surface of the lower column 3b.
An auxiliary arm 8 is inserted into and removably into the left and right pillar upper parts 3a, and extends downwardly in a bifurcated manner, sandwiching the upper parts of the pillars at the upper ends of the left and right pillar upper parts 3a, 3a. , 8, respectively, and in that case, the auxiliary arms 8...
and extends to an appropriate lower level than the lowest end of the hoist 5, and wire ropes 9 for reinforcing columns are connected to the lower ends of each auxiliary arm 8, either removably or in a fixed state, and attached to the tips of these wire ropes. The hook 10... is attached to the receiving part 11 of the trolley 1, 1.
It is removably locked to... 12... are turnbuckles connected to each wire rope, and 13, 13 are crane running rails.

As an example, when separating the connected body of the upper rail 4, upper support columns 3a, 3a, and hoist 5 from the assembled state shown in FIGS. 1 and 2, each turnbuckle 12...
Loosen the hooks 10 of each wire rope and remove them from the receiving parts 11. In this state, lock the wire ropes of the crane to the upper rail 4 to lift the above-mentioned connected body, and attach the upper parts 3a of the supports 3a to the lower parts 3 of the supports.
Separate from b and 3b. When the lifted connecting body is lowered to the desired location, the forked auxiliary arms 8, 8, 8, 8 at both left and right ends touch the ground as support legs, as shown in the third figure, and the upper rail 4 is placed in a horizontal state at a predetermined height. To keep the hoist 5 and the male insertion parts 6, 6 at the upper part of the column stable without grounding them.

According to the support structure of the simple prefabricated crane of this invention, when the connecting body consisting of the upper crane, a pair of upper supports, and the hoist is placed at a desired location during assembly, disassembly, or transportation of the crane, the upper rail can be The provided bifurcated auxiliary arm is grounded as a support leg and can stably maintain the upper rail at a specified height in a horizontal state, thereby safely holding the hoist and connecting the joint at the lower end of the upper part of the column. Also, it is possible to prevent the hoist from clogging with earth and sand.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a partially cutaway side view of the crane in an assembled state, Fig. 2 is a front view of the same, and Fig. 3 is a sloped view of the connecting body of the upper rail, the upper column, and the hoist. It is. 1... Trolley, 3... Support, 3a... Upper part of support,
3b...lower column, 4...upper rail, 5...hoist, 8...auxiliary arm.

Claims (1)

[Scope of Claim for Utility Model Registration] In a simple prefabricated crane in which an upper rail is supported at the upper ends of the left and right columns standing on a platform, and a hoist is supported on the upper rail in a movable manner, and the lower part of the pillar, and the upper and lower part of the pillar are connected so that they can be freely approached and separated by a joint provided at the end of both, and the upper part of both of the pillars has a structure in which the upper part of the pillar is sandwiched between the upper part and the lower part of the pillar on both front and rear sides. A strut structure for a simple prefabricated crane, which has an auxiliary arm protruding downward from the joint at the lower end of the upper part of the strut and the lower end of the hoist in a bifurcated shape.