JPS63315489A - Four-point lifting travelling hoist - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Object of the Invention> Industrial Field of Application The present invention relates to a four-point hanging hoist, and more specifically, a four-point hanging hoist that can lift a suspended load high and run stably in curves. Related to hoists.

Conventional technology Conventionally, a load is suspended from a hoist beam attached to the ceiling.
A hoisting device [15] is placed below the hook 11, but in order to lift an object with one point, a rope for two or four points is required under the hook 11, and the hook is attached from the ceiling. Since the length of the rope for hanging at two points or four points is added to the length up to this point, the hanging length becomes long, and this can cause dangerous load swing when traveling around curves or when the load is unbalanced. Another disadvantage is that it cannot pass through narrow spaces due to large load swings.

In order to solve these problems, two
If the rail system is used, the hoisting device will be placed between the rails, making it possible to raise the suspended load and prevent the load from swinging, but since it is a two-rail system, there is a problem that it will be difficult to travel in curves. .

Problems to be Solved by the Invention The present invention aims to solve these problems. Specifically, it aims to prevent load swinging during traveling and to provide stability during lifting.
In addition, the height of the hanging tool is made as high as possible during lifting]・
The purpose of the present invention is to provide a four-point suspended traveling hoist that is designed to be highly efficient.

<Structure of the Invention> Means for Solving the Problems and Their Effects The present invention provides a trolley with a drive motor that rolls on the flange surfaces on both sides of the hoist (beam).
a main body frame suspended from a hoist beam rotatably connected to the main body frame; two hoisting drums with synchronized rotation speeds arranged in parallel on both sides of the hoist beam on the main body frame; It consists of two guide rolls that roll while sandwiching the flange surface of a guide rail provided in parallel with the hoist beam from above and below on one side of the main body frame, and the hoist is wound up by the two hoist drums. It is characterized by being able to hoist a suspended load using four wire lobes, and to travel stably on the curved part of the voice 1-beam.

Hereinafter, the configuration and operation of the means of the present invention will be explained with reference to the drawings.

FIG. 1 is a plan view of a hoist according to the present invention, FIG. 2 is a longitudinal cross-sectional view taken along arrow A-A in FIG. 1, and FIG. 3 is a longitudinal sectional view taken along arrow B-8 in FIG. FIG. 4 is a vertical cross-sectional view in the direction of arrow C-C in FIG. 1, FIG. It is a vertical cross-sectional view in the direction of arrow 0-[) in the figure, FIG. 1 is an explanatory diagram of a conventional single-point suspension traveling hoist, and FIG. 8 is an explanatory diagram of a conventional two-rail hoist. .

In FIG. 1, reference numeral 1 denotes a hoist beam, which is fixed to the ceiling. 2 is a hoist main body frame;
It is suspended from the hoist beam by a pair of trolleys. 3
are trolleys with drive motors, two of which are placed on each side of the hoist beam 1, and are connected to the main body frame 2 with a thrust bearing 12, as shown in Figure 3, so that the tangential direction of the rail curve and the center of the trolley can be adjusted. match,
Travel freely and stably on curved sections (see Figure 5).

In addition, in order to prevent the load from swinging when traveling on curves and to prevent tilting due to shifts in the center of gravity of the hoist 1 and the main body, guide rollers 7 and 7' are provided on one side of the main body frame 2, and the hoist beam 1 and The flange surfaces of the idle rails 14, which are provided in parallel, are sandwiched from above and below and rolled to suppress the inclination of the main body frame (see FIG. 4).

4 is a winding drum wrapped with a wire lobe,
The wire lobes are arranged on both sides of the hoist beam 1 to shorten the distance between the lower end of the beam and the hoist 11, and the hoisted load is hoisted by a total of four wire lobes, two for each drum.

These two winding drums 4 are connected to a gear 8 as shown in FIG.
By connecting the sprocket 9 and the sprocket 9 with a shaft 10, the rotational speed is synchronized, and the hanging tool 11, which is always supported by the four lobes, is configured to move up and down horizontally.

Further, side rollers indicated by 13 are attached to the traveling trolley and guide the traveling direction of the trolley as it travels along the curved portion of the hoist beam 1 (see FIG. 4).

The travel drive motor and the drum drive motor are supplied with power from a power supply line (not shown), and these are controlled by operating commands (
(lifting, hanging and running).

FIG. 5 shows a situation in which the traveling hoist 16 according to the present invention travels along a curved travel route.
7 is lifted and transported to point B. Furthermore, even if there is an obstacle 18 on the travel route and the permissible travel speed is narrow, the compact voice [
・Transportation becomes possible by using.

<Effects of the Invention> As explained above, the present invention provides a hoist beam in which one herory with a drive motor that rolls on the flange surfaces on both sides of the hoist beam is rotatably connected to two locations in the longitudinal direction of the frame. a main body frame suspended from the main body frame, and two hoist beams disposed in parallel on both sides of the hoist beam on the main body frame.
A hoisting drum whose rotational speed is synchronized, and two guide rolls that roll while sandwiching the flange surface of a guide rail provided on one side of the main body frame in parallel with the hoist beam from below L. The hoist beam is hoisted by four wire lobes wound around the two hoisting drums, and is capable of traveling stably on the curved portion of the hoist beam. The problem of cargo being caught in the case of the above has been completely resolved, and transport is now possible even when there are obstacles in the travel route and the allowable travel range is narrow, making it possible to transport limited items in a limited space. This makes it possible to take the shortest route when needed, leading to a reduction in equipment costs and cost reductions.

[Brief explanation of drawings]

Fig. 1 is a plan view of a hoist according to the present invention, and Fig. 2 is a plan view of a hoist according to the present invention.
3 is a longitudinal sectional view taken in the direction of arrows A-A in the figure; FIG. 3 is a longitudinal sectional view taken in the direction n-8 of FIG. 1; FIG. 4 is a longitudinal sectional view taken in the direction C-G of FIG. 1. , FIG. 5 is an explanatory diagram showing an example of a travel route, FIG. 6 is a longitudinal cross-sectional view taken in the direction of arrow D-D in FIG.
The figure is an explanatory diagram of a conventional single-point hoist, and FIG. 8 is an explanatory diagram of a conventional two-rail type hoist. Code 1... Hoist beam 2... Body frame 3... Running trolley 4... Winding-beard drum 5... Wire robe 6...Motor with reducer 7.7'...Guide roller 8...Gear 9...Sprocket 10...Shaft 11... ...Hook or hanging tool 12...Slath (・Bearing 13...
・Side roller 14...Guide rail

Claims (1)

[Claims] A main body frame suspended from a hoist beam formed by rotatably connecting a trolley with a drive motor that rolls on flange surfaces on both sides of the hoist beam to two points in the longitudinal direction of the frame, and both sides of the hoist beam on the main body frame. The flange surface of a guide rail provided parallel to the hoist beam is sandwiched from above and below by two hoisting drums arranged parallel to each other and whose rotation speeds are synchronized, and one side of the main body frame. It consists of two guide rolls, and the hoisted load is hoisted by four wire ropes wound around the two hoisting drums, making it possible to stably travel around the curved part of the hoist beam. Point suspended traveling hoist.