SU1640096A1 - Weight-handling device - Google Patents

Description

The invention relates to lifting devices and can be used for reloading and canting of building structures. Ce2

The invention is to increase the speed of the device. The load gripping device contains the upper 1 and lower 3 cams of the chain hoist, the brace 4, the slings for hooking the panels, the hydraulic brake 7 including the upper and lower cylinders, the stem with the disc passing through them. Under the bottom of the upper cylinder a flange is freely placed, made in the form of an element possessing positive buoyancy. This eliminates the time for the liquid to raise the flange and press it to the bottom of the cylinder, and also prevents the accelerated passage of fluid through the hole in the bottom of the cylinder. 4 il.

FIG. one

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1640096

The invention relates to lifting devices used, in particular, when overloading and canting of building structures,

The aim of the invention is to increase the speed of the device.

Figure 1 shows the device; general form; FIG. 2 shows a flange w (nozzle) pressed against the liquid buoyancy force at the static position of the device; on fig.Z - the position of the flange (nozzle) and the movement of fluid in the cylinders when the device is idling; figure 4 - to'zhe, when working- ^ 5 bochem course device "

The load gripping device contains the upper yoke of 1 tackle, ropes 2 tackle, the lower yoke of 3 tackle, brace 4, slings 5 20

for hooking the top of the panel, slings 6 for hooking the bottom of the panel, hydro-. core 7. On the upper holder 1 of the polyspast there is fixed an earring for suspending the device on the hook of the erecting crane 25 and eyelets for fastening the ropes 2 of the polyspast. The lower yoke 3 of the polyspast is made with the outrim supports of the axes of the blocks. lower cylinder 9, rod 10 and disk 11.

The upper cylinder 8 is made with a bottom in which there is a hole for the rod. A flange (nozzle) 12 is installed under the bottom of the upper cylinder with a volume weight less than the corresponding volume of fluid, with the possibility of unrestricted vertical movement when it interacts with the buoyancy force of the fluid and the stem on which it is installed. The upper cylinder 8 is mounted in the lower 9 so that it is possible for them to move relative to each other, bounded by a rod 10 with a disk 11. Cylinder holders 1 and 3 are attached to the hydraulic brake cylinders. The lower cylinder is filled with liquid. An annular calibrated gap for the passage of fluid from one cylinder to another is provided when the panel is turned over (working stroke) due to different diameters of the opening of the flange 12 and stem 10, and when the device returns to its original position (idle), the annular gap is formed due to different diameters of the bottom openings top cylinder and rod.

The device works as follows.

The overlap panel, which is in a vertical position (on a panel truck or a pyramid), is sling for all hinges intended for lifting and laying it into the design position.

When lifting, half of the force from the weight of the panel is transmitted through the lines 5 and the hoist to the cylinders of the hydraulic brake 7, and the “effort” from the second half of the panel's weight through the lines 5 to the hydraulic brake from the opposite side. Due to the difference of these efforts, the upper cylinder 8, entering the lower cylinder 9, displaces the liquid from it through the calculated annular gap between the flange (nozzle) 12 and the rod 10. (Fluid outflow from the lower cylinder to the upper bypassing the calculated gap is excluded). Due to the fact that the flange (nozzle) 12 with a volume weight less than the weight of the corresponding volume of fluid is constantly pressed to the bottom of the upper cylinder under the action of the buoyancy force of the fluid, as the cylinders enter each other, the slings hooked to the top of the panel are lowered and the slings 6 bottom panel rises. At the same time, the panel smoothly translates from a vertical position to a horizontal one.

In the horizontal position, the panel is placed in the design position, the rasstropovka is made and the device is fed to the next panel.

During the feeding time, the device takes the initial position. Returning it to its original position occurs under the action of the weight of the lower yoke of the polyspast, the lower cylinder and the slings for hooking the bottom of the panel. In this case, the lower cylinder is lowered, and the liquid from the upper cylinder passes into the lower one through the annular gap between the rod and the bottom hole of the upper cylinder. When a fluid transitions, its force of motion overcomes the ejector flange with the force of the fluid and the flange moves away from the bottom of the cylinder and, being washed by the fluid, passes it into the lower cylinder. As soon as the transition (movement) of the liquid stops, its buoyant force will press the flange to the bottom of the upper cylinder.

. 1640096

Claims (1)

Claim "Lifting device, containing the upper and lower yoke of the polyspast, its ropes, brace, lifting slings and hydraulic brake, including the upper and connected with him lower cylinders placed in them with a disc stem at one end and installed under the bottom of the upper cylinder and stem flange, characterized in that, with 6 The goal is to increase the speed of the device by eliminating the accelerated passage of fluid through the openings of the bottom of the upper cylinder when the hydraulic brake goes from idle to working and to prevent the rod from jamming with a flange, the latter is freely installed relative to the bottom of the upper , θ of the cylinder and is made in the form of possessing the positive buoyancy of the element a // Fig 2 1640096