JPH0518396Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a simple loading machine in which a hoist is used to raise a loading platform along a mast, and movement is carried out by hand.

<Conventional technology> The unloading machine has a simple structure in which the loading platform is lifted and lowered using a manual chain block or an electric hoist, and moved by hand.As it is inexpensive and easy to assemble and disassemble, it is widely used in factories, warehouses, farms, and shops. But it is starting to be used.

<Problem that the invention aims to solve> In large factories and warehouses, the unloading machines that work inside are separate from the transport vehicles that go outside.

However, even in places where a simple unloading machine is used, it is not desirable in terms of equipment or efficiency to prepare a separate transport vehicle and transport the goods one by one.

The main purpose of this idea was to move the cargo that was high up inside the building onto the raised loading platform of the unloading machine, and once the loading platform was lowered to the lowest position, the unloading machine could be pushed to take it out of the building, or vice versa. The purpose of the present invention is to develop a simple unloading machine that can perform the following functions: transfer the cargo unloaded from a truck to the unloading machine, move it into a building, and store it in a high place.

<Means for solving the problem> The simple loading machine of this invention has a hoisting device that raises and lowers the loading platform along a vertical mast on the base,
In a simple structure unloading machine with hand wheels attached to the base, the hoisting device is an electric hoist with a remote control switch attached to the upper end of the mast, and the mast can be moved up and down across the hinge. The upper and lower parts of a standing vertical rail frame, extending diagonally downward from the upper part of the rail frame to the back side, the middle part was bolted to the back side retaining plate of the lower part of the rail frame, and the lower end was bolted to the rear end of the base. The hinge part includes a supporting part that holds the upper part of the rail frame in the same position when the upper part of the rail frame and the inclined reinforcing frame are bent forward by about 90 degrees, and the base has front and rear ends, It is characterized by having screws that stick out to the left and right to hold down the ground or floor surface when necessary.

<Function> The simple loading machine of this invention has the upper part of the mast attached to the lower part of the mast so that it can be bent by 90 degrees with a hinge. When the upper part fits into the entrance of a building, you can fold it down and enter and exit freely. The original purpose of this idea has now been achieved, but
Furthermore, in order to improve the performance of the unloading machine, we added screws that can be pulled out to the left and right at the front and rear ends of the base, improving stability when lifting and lowering heavy objects. By adjusting the cap screw, the base can be held horizontally for operation.

<Example> Figures 1 and 2 show an example of this invention. 1 is a mast, 2 is a base, 3 is a lifting platform, 4 is a hoist, 5 is a wheel, 6 is a hinge, and 7 is a screwdriver.

The mast 1 consists of three parts: an upper part 1a of a vertical rail frame, a lower part 1b, and an integral inclined reinforcing frame 1c.

In FIG. 1, the vertical rail frame upper part 1a of the mast 1 is shown in a solid line when it is bent forward by 90 degrees, and the normal state in which it stands vertically is shown in chain lines. Under normal conditions, the lower end surface of the upper part 1a properly rests on the upper end surface of the lower part 1b,
Both are in a straight line. When bent as shown by the solid line, the upper part 1a turns around the axis of the hinge part 6, and is supported in a substantially horizontal position by the support part 8 attached to the hinge part 6, as shown in the figure.

At the time of bending, the bolt 9 that fixed the lower end of the inclined reinforcing frame 1c to the rear end of the base 2 and the lower part of the vertical rail frame 1b
Needless to say, the bolts that fasten the side retaining plate 10 and the reinforcing frame 1c side retaining plate 11 are removed.

The loading platform 3 that has descended to the lowest position in Figures 1 and 2 is a conventional one, and has a vertical section that goes up and down by entering the grooved rails of the vertical rail frames 1a and 1b, a horizontal section on which the load is placed, and a horizontal section on both sides of the horizontal section. The upper end of the vertical part is lifted up and lowered by a hoisting machine 4 using a wire rope 12. In this example, the hoist 4 is an electric hoist operated by a remote control switch box 13.

The base 2 fixes the lower end of the vertical rail frame lower part 1b and the lower end of the above-mentioned inclined reinforcing frame 1c, fixes the mast 1, and moves by hand using four wheels 5. The width of the base 2 is made to the minimum required size, and the width of the base 2 is made as needed.
The screw jacks 7 pulled in at the front and rear ends are pulled out to the left and right, held down, and the handle of the screw 14 is turned to hold down the floor or ground.

FIG. 2 shows a state in which the arm 16 of the screwdriver 7 is fully pulled out. Even when the arm 16 is fully pulled out, a sufficient length remains inside the base 2. Of course, the screwdriver 7 may be attached by pulling out the arm 16 from inside the base 2, or by rotating it back and forth when not needed.

The specific structure of this invention, which allows the mast to bend when passing through a building doorway, can be designed in a variety of ways, depending on the well-known skill of the mechanical engineer implementing it.

One embodiment has been described above, but as described above, this invention can be varied and applied in various ways without changing its gist.

<Effects of the invention> This invention takes advantage of the characteristics of a simple unloading machine that does not handle large heavy loads like a full-scale lift truck, and by making its mast bendable, it can pass through building entrances and exits.

If the bolts securing the inclined reinforcing frame 1c are removed and pushed up slightly, the weight of the hoisting machine 4 will easily stabilize the rail frame upper part 1a and the reinforcing frame 1c in the posture shown by the solid line in FIG. It is easy to return to the vertical position, and since the reinforcing frame 1c does not bend from beginning to end, the strength is sufficient just by tightening the bolts. In addition, by intentionally adding screws to the simple unloading machine, the base has the minimum dimensions necessary for fixing the mast, making it easier to pass through narrow aisles, and for example, when receiving truck loads outside a building. You can stabilize the aircraft by adjusting each screw on uneven ground.

With this invention, the simple unloading machine not only works inside factories and warehouses, but also allows it to exit the building directly after unloading, eliminating the need for transport vehicles and transshipment work, and further improving the ability to operate outside the building on uneven surfaces. However, the effect of greatly expanding the range of use of this simple unloading machine as a transport vehicle and unloading machine will greatly contribute to relatively small-scale companies that require a simple unloading machine.

[Brief explanation of the drawing]

1 and 2 are an elevational view and a side view of an embodiment of this invention, and FIG. 3 is a cross-sectional view showing the platform support portion of the mast. 1 is the mast, 2 is the base, 6 is the hinge, and 7 is the screw.

Claims (1)

[Scope of Claim for Utility Model Registration] A hoisting machine with a simple structure that has a hoisting device that raises and lowers a cargo platform along a vertically standing mast on a base, and has hand wheels attached to the base; , is an electric hoist with a remote control switch attached to the upper end of the mast, and the mast consists of the upper and lower parts of a vertical rail frame that stands up and down with a hinge between them, and the rail frame that extends diagonally downward from the top of the rail frame to the back side. , consisting of an inclined reinforcing frame whose middle part is bolted to the rear side retaining plate of the lower part of the rail frame, and whose lower end is bolted to the rear end of the base; It has a support part that holds it in that position when it is bent forward by about 90 degrees, and the base is characterized by having screws on the front and rear ends that protrude to the left and right to hold down the ground or floor surface when necessary. Simple unloading machine.