RU2084395C1 - Hoisting device - Google Patents

Abstract

FIELD: load hoisting equipment. SUBSTANCE: device has outer frame 1 with cramps 15 for securing the device to breastwork of building under repair or construction. Positioned inside outer frame 1 is inner frame 4 mounted rotatably around vertical axis with the aid of hinge supports . Guides 16 intended to guide wheels 6 of load carriage 6 are mounted on the inner frame. In their lower part the guides have enlarging members 17. Attached to the outer frame are right beam 2 and left beam 3, which are connected with vertical tie beams of the outer frame with the aid of braces 10. Counterweights 9 are instaled on the back ends of the tie beams. EFFECT: enhanced efficiency. 2 dwg

Description

 The invention relates to lifting equipment designed for lifting goods, mainly for moving goods weighing up to 1000 kg on a vertical wall to any height.

 Lifting mechanisms are known (see, for example, AS N 1384533, class B 66 C 23/22, published March 30, 88 containing beams on which a boom of a frame or U-shaped structure is pivotally mounted. The boom can be rotated around a horizontal axles with access to the outside of the building and inside the building. Beams are fixed in the window opening or on the parapet of the building under repair or under construction. However, significant overturning moments at the beginning and at the end of the lift, and in the case of the window version, dimensional restrictions make manual control difficult Using this device.

 A lifting device is known (Finnish patent N 21796 of 6.6.47 g, class B 66 C 23/20), fixed in window openings, made in the form of a console with an angled strut, rigidly mounted on a rack mounted in a window opening on point supports with the likely possibility of turning the entire rack around its own axis. At the end of the console, a block is fixed with a lifting cable through it with a gripping element controlled by a pneumatic actuator. However, the cantilever and dimensional restrictions necessary for carrying cargo into the window and its rotation also complicate its manual control and its installation.

 A lifting device is known (see, for example, French application N 2547568, class B 66 B 9/18, E 04 C 21/14, published July 14, 83), containing horizontal, mounted on the roof or ceiling of the building, and vertical guides mounted parallel to a vertical wall outside the building and extending down to the ground or lower, starting point of rise. According to these guides, the load with the help of a winch cable, mounted on the ground, is lifted through the blocks at the junction of the guides and the far end of the horizontal guides to the roof or ceiling. However, the bulkiness of the guide system also impedes the widespread use of this device.

 The closest in technical essence is a lifting device (or edge for lifting construction materials) as N 1799847, class B 66 C 23-22, published on 03/07/93, containing support racks with a monorail fixed on them, the front support racks connected by a coupler, forming together the outer frame, and the counterweight weights are laid on the rear support post. A trolley with corrective manual control handles and a hook suspension is installed on the monorail, through the blocks of which and the block on the monorail console passes the channel of the cargo winch installed at the base of the building. A control winch and counterweight loads are mounted on the inner end of the console on the rear support post.

 For disassembling and assembling the lifting device in place (on the roof, on the upper floor), the device is made collapsible, integral.

 Clamps are installed on the front struts for mounting the lifting device and parapet stones.

 Along with the advantages compared to the previously mentioned analogues, collapsibility, the possibility of quite simple installation in the right place, the device is quite voluminous and complicated, it is connected with a winch installed on the ground, which is far from always convenient, from the point of view of operation, and from the point of view of remounting in another place.

 The problem to which this invention is directed, is to create a device that is small enough, compact, collapsible, with the possibility of easy delivery to a place and assembly on site without bulky special devices, regardless of whether there is a convenient platform for a cargo winch at the bottom, i.e. . nothing needs to be installed below; convenient, simple, safe in operation, both from the point of view of work, and from the point of view of integrity and reliability of the cargo delivered to the top.

 In addition, the inventive lifting device expands the arsenal of technical means used for lifting goods, and gives a significant economic effect due to the possibility of abandoning expensive cranes and hoists.

 Figure 1 presents the proposed lifting device, figure 2 diagram of the lifting of goods.

 The lifting device comprises (Fig. 1): outer frame 1, assembled in place, right beams 2 and left 3, attached to the outer frame 1; inner frame 4, and serving as a tilter, also assembled in place and mounted using hinged supports on the lower and upper crossbars of the outer frame 1. A load winch 5 is mounted on the lower crossbar of the movable frame 1, with the possibility of rotation around a vertical axis (the winch can be of any type manual, mechanical, etc.). Trolley 6 for lifting on it or on a pallet 7, or in a container 8, or cargo in the form of sheets installed or stacked on a pallet, or in any other form, are connected to the hook suspension of the winch cable. Counterbalance weights 9 are installed at the ends of the right 2 and left 3 beams that are far from the parapet stones. The lateral crossbars of the outer frame and the beams are strengthened by struts 10, and the lateral, upper and lower crossbars are additionally fastened with plates 11. The pivot bearings can be made in the form of thrust bearings 12 or sliding bearings 13. The winch cable is thrown through the block 14. On the lower crossbar of the outer frame 1, clamps 15 are installed, designed to attach the lifting device to the parapet stones of the roof of the building.

 On the inner frame 4, guides 16 are fixed along which the wheels of the trolley move to lift the load to be lifted. The guides 16 in their lower part have expanding elements 17 for the convenience of getting the wheels of the trolley into the guides when it rises. The expanding elements 17 are made separately from the upper part of the rails 16 and are mounted on the lower crossbeam of the outer frame 1. On the inner frame, latches 18 are mounted, which allow unloading the winch cable during tilting.

 This lifting device is used and operates as follows.

 Deliver in any way to the installation site of the lifting device a part of its beam elements, side rails, struts, winch, fasteners. On the upper platform (roof), a technological lightweight temporary lift is assembled from these parts to lift the remaining elements of the lifting device. Those. in fact, the lifting device lifts itself.

 After that, the lifting device itself is assembled in place, fixing it with clamps to the parapet stones of the roof or upper platform. Set the loads of the counterweights 9 and the load winch 5. With the winch lower the hook suspension on the ground (or any lower level from which it is necessary to lift the load), grab the truck 6, the container 8 or the pallet 7 with the load and lift it up (see figure 2) .

When the lower edge of the trolley reaches the level of the lower crossbar of the inner frame 4, the operator fixes the trolley on the inner frame, unloading the winch cable, unfolds the trolley with a load of 180 ^o C, and calmly removes the load from the trolley or the whole trolley with the load, after lowering the trolley on a horizontal surface.

 After completion of the lifting operation, the lifting device is disassembled and lowered down or transferred to a new place.

Claims (1)

 A lifting device comprising a frame with clamps for attaching to a parapet stone of a building being repaired or under construction, a trolley for lifting goods, a hoist winch and counterweight loads, characterized in that it is equipped with a tilter made in the form of an internal frame mounted inside a fixed external frame on hinges , for the possibility of turning the load and the winch around a vertical axis, with guides fixed on the inner frame for the possibility of moving the cart along with the load installed on it, fi trolleys, guides with expanding ends mounted on the lower crossbar of the outer frame, for the convenience of receiving goods on the tilter, right and left beams and struts, fastening the beams with the upper part of the fixed outer frame, while the loads are counterbalanced at the rear ends of the crossbars of the fixed outer frame .

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