JPH0444560Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention belongs to the field of hoists, and relates primarily to a simple lift that has an expanded range of lifting height and is movably used indoors.

(Prior art) A chain block is a simple means of unloading that has been used in the past, but the props used for this are tripod and cannot be extended or contracted, making it difficult to unload cargo with a high lifting height in a narrow space. In this case, it took time to secure the scaffolding, and since it was impossible to move, it was difficult to turn around and the work was limited.

(Problems to be Solved by the Invention) In view of the above-mentioned circumstances, this invention provides a simple lift that makes it easy to secure scaffolding and can accomplish high lift lifting work in a small space.

(Means for solving the problem) This idea consists of an external support that is integrally erected on a base that is horizontally extendable and movable, and an internal support that can be raised and lowered from the outside support. An inner support is fitted into the middle support so that it can be raised and lowered, and a long groove is provided vertically in the outer support to guide a claw installed horizontally at the lower end of the middle support, and the claw is made to protrude from the outer periphery of the outer support. A chain block is removably suspended from the upper end of the outer support, one end of the chain of the chain block is engaged with the claw, and a long groove is provided vertically over the required length above the claw of the middle support. The center of the pulley groove is aligned with the center of the inner support, and the pulley is rotatably locked to the upper end of the inner support, one end of the wire guided to the pulley is locked to the upper end of the outer support, and the other end of the wire is connected to the inner support. It is secured to the lower end of the column, and a chain block is detachably suspended from the upper end of the inner column.

(Function) The struts supporting the chain block can expand and contract, expanding the range of unloading work.The legs that extend horizontally can save space and hold the struts stably, making it easy to use the legs during transportation. Can be removed from the base and made compact.

(Example) To specifically explain this invention with an example,
As shown in FIG. 1, casters 2 are vertically disposed at the ends of cross-shaped legs 1 that are horizontally extendable and retractable. As shown in Fig. 2, each leg 1 is slidably inserted into the bases 3 and 3' arranged in two rows in a cross shape, and holes of appropriate length are inserted into the bases 3 and 3'. Pin it to secure it. As shown in FIG. 3, an outer support 4 made of a cylindrical tube is integrally erected on the upper surface of the base 3. The outer support 4 has a long groove 5 of a required width installed vertically along the axis over a required length, and a shackle 6 is integrally secured to the upper end, and a chain block 7 for lifting and lowering is suspended from the shackle 6 via a hook 8. are doing. The cylindrical middle support 9, which is fitted into the inner periphery of the outer support 4 so as to be able to rise and fall freely, has a long groove 10 with a required width extending along the axis along the axis, and a claw 11 is integrally provided at the lower end of the long groove 10. The outer support 4 is horizontally installed and protrudes from the long groove 5 of the outer support 4 by a required length, and an engagement hole 12 is provided through the protrusion, and an integrated hook 14 is attached to the lower end of the chain 13 of the lifting chain block.
2 is engaged. A long groove 10 is provided at the upper end of the middle support 9.
The pulley 15 is rotatably locked by aligning the center of the pulley groove with the center of the pulley 15, one end of the wire 16 guided by the pulley 15 is locked to the pin 17 of the shackle 6 at the upper end of the outer support 4, and the other The end thereof is locked via a hook 19 to the lower end edge of an inner support 18 which is fitted into the inner periphery of the middle support 9 so as to be able to rise and fall freely. A chain block 22 for unloading is detachably suspended from the tip of a cross beam 20 installed horizontally at the upper end of the inner column 18 via a hook 21.

The simple lift a constructed in this way unloads cargo by the chain 23 of the chain block 22 for unloading, but the middle column 9 is moved linearly in a constant phase with respect to the outer column 4 by the operation of the chain block 7 for lifting. Pulley 1 lifts and lowers at the same time as the middle pillar lifts and lowers.
A wire 16 guided by a wire 16 is connected to the inner support 1 at a predetermined speed via a hook 14 integrated with the lower end of the wire 16 and is rotatable about a vertical axis.
8 can be lifted and lowered, the cargo can be unloaded to the required lifting height, and the cargo can be easily moved and transported to the required position, which improves the work efficiency when unloading and transporting the cargo in a narrow indoor space.

(Effects of the invention) As described above, according to the simple lift a according to this invention, the range of unloading work in a narrow indoor space is expanded, and work efficiency is improved because scaffolding is not only easy to secure but also movable. There is a great deal of contribution to this.

[Brief explanation of the drawing]

Figure 1 is a front view of the simple lift a according to this invention, Figure 2 is a perspective view of the base, and Figure 3 is A of Figure 1.
FIG. 2 is an enlarged cross-sectional view showing only the main parts of each support column in the direction of arrow −A′. In the figure, 1 is a leg, 2 is a caster, 3 is a base, 4
is an outer support, 5 and 10 are long grooves, 6 is a shackle,
7, 22 are chain blocks, 8, 14, 19,
21 is a hook, 9 is a middle support, 11 is a claw, 12 is an engagement hole, 13 and 23 are chains, 15 is a pulley, 1
6 is wire, 18 is inner support. A is a simple lift.

Claims (1)

[Scope of utility model registration request] The outer support is integrally installed on a base that is horizontally extendable and movable, and the inner support is fitted inside the outer support so that it can be raised and lowered. A long groove is provided vertically in the outer column to guide a claw installed horizontally at the lower end of the middle column, and the claw is made to protrude from the outer periphery of the outer column, and a chain block is removably suspended from the upper end of the outer column. Then, one end of the chain of the chain block is engaged with the pawl, and a long groove is provided vertically over the required length in the upper part of the pawl of the middle support, and the center of the pulley groove is aligned with the center of the long groove. A pulley is rotatably locked to the upper end of the
A simple lift consisting of one end of a wire guided to a pulley being locked to the upper end of an outer support, the other end of the wire being locked to the lower end of an inner support, and a chain block removably hanging from the upper end of the inner support. .