RU1814641C - Load-lifting device - Google Patents

Abstract

Usage: lifting devices. SUMMARY OF THE INVENTION: a device ..contains a power unit, a movement accumulator consisting of a pipe 6 and tubular elements 10, 11, 12 connected by rigid diaphragms 16, 17, 18c with tubular elements 13, 14; 15 outdoor telescopic system. Under the action of the power unit, the pipe and ib elements extend. 11, 14, 15, while the elements of the displacement accumulator perceive the weight load, and the elements 13.14. 15 - bending forces. 6 s P. f-ly, 10 ill.

Description

The invention relates to the field of load lifting devices.

In FIG. 1 shows a general view of a hoisting device with fully extended - - muddy telescopic systems; in Fig. 2 - the same in the folded form, before the lifting of the load: in Fig. 3 - section. AA in FIG. 1: in FIG. 4 is a view along arrow B in FIG. 3: in FIG. 5 is a general view of another modification of a lifting device with fully extended telescopic systems; in FIG. 6 is the same, view B in FIG. 5 when folded: FIG. 7 - internal arrangement of the elements of the lifting device in the folded state before lifting the load: in FIG. 8. . the same ones at the end of the first return stroke of the power unit; in FIG. 9 is a section GG in FIG. 7; in FIG. 10 - section bb nafig. 7.

The lifting device includes c. a power unit consisting of frame 1, nnvrf 2 and 3, and air bags 4 and 5.

The plate 3 is connected to the pipe 6 of the movement accumulator by means of a hinge 7 and a beam 8. passing into a slider 9.

The displacement accumulator is made in the form of a telescopic system of tubular elements 10, 11, 12, each of which is rigidly connected to the corresponding elements 13, 14, 15 of the external telescopic system by means of rigid diaphragms 16, 17, 18. Element 12 is supported on the base 19 through a glass 20 filled with sand 21;

Element 15 has load brackets 22 and 23 which provide a rigid connection between the device and load 24. In FIG. 1 shows, by way of example, the fastening of the tank of a water tower; FIG. 2 - mount the tower barrel.

The plate 2 is rigidly connected to the frame 1, which in turn is connected to the element 15 of the external telescopic system and, accordingly, to the element 10 of the movement accumulator.

00

-l

& about

B

with

Gaskets 25 serve to reduce backlash between the tubular elements,

The remote-controlled link 26 of the lock 27 attaches the element 14 and the associated element 11 to the element 15 for the period of joint lifting.

Inside the pipe 6 there is a pipe 28 for feeding sand 21 into the cavity of the pipe 6 and a sand removal device, consisting of an inverted steel cup 29 attached to the lower end of the pipe 6 with plates 3d and pipes 31 and 32 cut into the bottom of the cup 29 and used to compressed air supply and removed and a mixture of air and sand from the cavity of the glass 29.

Hoses 33, 34, 35 are connected to the pipes 28, 31 and 32, which together with the hoses 36. 37 are formed into spirals to supply compressed air to the pillows 4 and 5 within the limits of the device height variation using an elastic steel core.

In the lower parts of the pipe 6 and element 10 there are openings 38 for letting sand 21 flow from the cavity of the pipe b into the cavity of the elements 10, 11, 12.

The device is driven by compressed air supplied from the portable compressor alternately to the pneumatic pillows 4 and 5, which move the plate 3 and with it the pipe 6 with respect to the element 10 and the elements 15 and 14 connected to it through the frame 1.

8, each of these periods of movement in the space which is freed up under the element 10 and the pipe 6 in turn flows through the sand, preventing them from moving downward, as a result of which the reciprocating movement of the elements of the power unit (plates 2. 3) is converted into a stepwise extension of the pipe b and elements 10, 11, 14, 15 of telescopic systems.

When the element 14 reaches the calculated height of the rod 26, attached to the base 19 or to another fixed element, it opens the lock 27 and the element 17 of the external telescopic system and the element 11 of the movement storage device rigidly connected to it by the diaphragm 17: become stationary.:; -. , ...:. : .......-. . -. .- -. , .-. :.,.

The sand necessary for the operation of the movement accumulator is fed into the cavity of the pipe 6 from the hopper 39 through the hoses 33 and 28. The cavity of the pipe 6 serves as a separator, and the exhaust air exits through the tube

cho-o. :. ; . - .v Vv Y /.

To lower the load into the hose 31, compressed air is dispensed, the flow of which into the glass 29 loosens the sand and carries it through the hoses 32 to the hopper 39.

When sand is removed from the cup 29, the equilibrium established in the sand of the support zone under the pipe 6 and the storage accumulator elements 10 and 11 is disrupted, and the sand displaced toward the cup 29 facilitates the smooth lowering of the telescopic systems together with the load.

The supply of compressed air from the compressor to the corresponding hoses is controlled by a distributor 41. The device is equipped with a telescopic vertical ladder 42.

Modifications yctpoucTBa (Fig. 5-10) also has a displacement accumulator consisting of tubular elements 10, 11, 12, rigidly connected by diaphragms 16, 17 and an edge equivalent to diaphragm 18, with tubular elements 13, 14, 15 of the external telescopic system .

The plate 43 of the power unit is rigidly connected to the elements 12 and 13 and also serves as a support plate of the device. Two plates 44 are installed on both sides under the beam 45, passed through an opening in the lower part of the element 13.. ,: -: ...:; . - ..:

The device is further provided with a displacement accumulator consisting of tubular elements 46, 47, 48. Element 46 is supported by a beam. .

Pneumatic cushions 49 are located between the plates 43 and 44. The central elements 10 and 48 of the movement storage devices are rigid; the said rib 50 is connected to each other. Apertures 51, 52 are made in the diaphragms 16 and 17 to slide the elements. 47, 46 of an additional movement accumulator. The lower part of the element 46 is located in the guide 53 on the element 13..

In the cavities of the central elements 10 and 48 of the displacement tanks, sand supply tubes 28 are arranged 21. In the lower part of the elements 10 and 48, sand removal devices are arranged, the construction of which has already been described. The lower ends of the elements 10, 11, and 47, 48 have bottoms with holes through which sand from the cavities of the elements 10 and 48 fills the cavities of the elements 12 and 46, and then the cavities of the elements 11 Vi 47 at the beginning.

Air bags 49 with a hose 54 are connected to {distributor) 41; Elements of the described modification of the device that are identical to the point: the devices of FIGS. 1–4 are denoted by the same positions, including dy) 5 a yv y n1 & y | 1 aug ./)1 (full lock 26. not shown on (fiK 7-9.; .-.; V: ..;.;; ;;; /,:, / ..

When compressed air is supplied to the cushions 49, the force exerted by the beam 45 is transmitted to the bottom of the element 46. a second

in turn, through the sand 21 it transfers the force to the elements 47, 48, then through the rib 50 to the elements 15, 14 of the external telescopic system (interconnected in the first stage of lifting), which entrain the main elements 10, 11 through the diaphragms 16, 17 drive storage.

As a result, all of the indicated elements of the device together with the load rise by the size of the power unit’s travel (by the value of the displacement of the plates 44) and the space freed up under the elements 10, 11 is filled in the cavity of the element 12 with sand that wakes up through the holes in the bottoms of the elements 10, 11.

When the pressure in the cushions 49 decreases, the element 46, together with the beam 45 and the plates 44, is lowered to its original position under the influence of its own weight, and the free space in the cavity of the element 46 under the elements 47, 48 is filled with sand.

The load from the load and the weight of the raised elements of the main displacement accumulator and the external telescopic system is transmitted to the elements 10, 11 and 12 through the sand 21. The arising bending forces in the device due to the eccentric application of external loads with respect to internal forces perceived by elements 15, 14.13 of the outer telescopic system.

- With each cycle of movements of the power unit, the telescopic extension of the elements increases and the load rises accordingly. .

To lower the load include sand removers working independently of one another.

Each of these modifications of the device may find application depending on the specific operating conditions. The weakest unit of the device is the power unit (air bags), therefore the location of the power unit below is more convenient in terms of maintenance and is preferable when using hydraulic jacks in it.

The cross section of the tubular elements of the outer telescopic system may be different. The round section is advantageous in that standard pipes can be used. The rectangular shape allows for the perception of torsional forces and is more rational when working in bending.

FORUM

Claims (7)

1. A lifting device containing a power unit with jacks for communication with the bearing elements of the device reciprocating movements relative to the base, a displacement accumulator in the form of a telescopic system of tubular elements, in the walls and bottoms of 5 of which there are openings for filling the cavities between all tubular elements of this system with a loose body fed into the cavity of its central tubular element as it is 10 extended , and the external telescopic system of tubular elements covering this drive, tracking the movement of the tubular. elements of the drive, with the exception of 15 in that the wall and bottom of the outer tubular element of the latter are solid, the middle and upper parts of the walls of its inner tubular elements are also solid, while 0 each tubular element of the drive is rigidly connected with the corresponding tubular element of the outer telescopic system, 2. The device according to p. 1, t l and ch and yuyu e5 s. in that the rigid connections of the tubular elements of the telescopic systems are made in the form of rigid diaphragms pairwise connecting the upper parts of the tubular elements of these systems. 0 3. The device according to claim 1, characterized in that the jacks of the power unit are installed between the plates located above the telescopic systems and the lower of these plates and the upper rigid diaphragm, while the upper plate is rigidly connected through the frame structure to the outer tubular element of the outer telescopic system, and the bottom plate is connected to the pipe installed 0 in the cavity of the central tubular element of the displacement accumulator for supplying the granular body into said cavity. 4. The device according to claim 2, with the exception that it is equipped with an additional 5 by a displacement accumulator made in the same way as the main one, with the upper parts of the central tubular elements of the displacement accumulators being rigidly connected between themselves, the outer tubular element 0 of the main displacement accumulator is rigidly connected to the base, and a power unit in the form of a jack is installed between the outer tubular element of the additional displacement accumulator and the base. 5 5. The device according to claim 4, with the exception of that. that in rigid diaphragms there are openings with guides for the respective tubular elements of the additional displacement accumulator. . 71 6. The device according to claim 1, characterized in that it is equipped with a remotely controlled lock connecting the movable tubular elements of the external telescopic system. 7. The device according to claim 1, with the exception that it is equipped with 8 41 the bottom of the central tubular element of the displacement accumulator by a device for removing loose body made in the form of an inverted cup, in the bottom of which holes are made connected to hoses for supplying compressed air and removing loose body. / / / SSfSff / rrSrr / Гг r f f S f s fl / / V S / 7   f T 37 r r f f S f s fl / / V S /   f T 37 Figure 1 J6 FIG. 4 .5 No. Fig 6  f