RU2539431C2 - Elevator - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: elevator relates to lifting gears with a pitch method of lifting (lowering) mainly of large-sized heavy-weight superstructures of railway bridges and can be used mainly at construction or removal of large-sized railway bridges with spans of a formed type with inclined portals on both ends of a truss. The elevator includes vertical racks on which there installed horizontally from above is a cross-beam having attachment assemblies of a load-carrying element, hydraulic power elements. A load-carrying element includes vertical perforated hoses contacting to pick-up and movable supporting beams supported from bolsters reinstalled into openings of perforation of vertical perforated tie-rods. Power elements representing hydraulic jacks attach the pick-up beam and the movable supporting beam; with that, the elevator is equipped with working platforms arranged on the pick-up and movable supporting beams, which have exits to stairs fixed on vertical racks of the elevator. In order to perform these works, at least two elevators are required.

EFFECT: invention provides cheapening of an elevator design and improvement of its operating reliability.

7 dwg

Description

The elevator refers to hoisting mechanisms with a step-by-step method of lifting (lowering) predominantly large-sized heavy bridge spans.

Known stepper elevator containing vertical racks with rails, on which the load-bearing element is installed with the possibility of movement using hydraulic jacks as a lifting mechanism (Patent No. 2260561, class. B66F 7/00, publ. September 20, 2005, bull. No. 26).

Also known is the lift that we took as a prototype, using a hydraulic unit as a load-bearing element, developed by VSL International Ltd Switzerland (http://www.vsl.com), published in Russia by Tracking Test Systems LLC (STS) ) (http://www.sts-hydro.ru).

As a working body in the prototype, a bundle of steel ropes is used, which is passed through a hydraulic unit, which, by alternately jamming in a moving hollow rod, moves the ropes up or down, respectively raising or lowering the suspended load.

The disadvantage of the prototype is the rapid wear and failure of the cargo ropes, which leads to a rise in the cost of the entire structure of the elevator and the inability to use it for a long time without replacing the load-bearing elements.

The aim of this proposal is to reduce the cost of the design of the lift and increase its reliability during operation.

To solve this problem, a lift is proposed that contains vertical racks, on which a crossbar is installed horizontally from above, having attachment points for the load-bearing element, hydraulic power elements, while the load-bearing element contains vertical perforated rods in contact with the supporting and interchangeable support beams resting on the support bars, re-installed in the windows of perforation of vertical perforated rods, and power elements, including hydraulic jacks, connect the catch the beam and the movable support beam, while the lift is equipped with platforms located on the grab beam and the movable support beam having access to the stairs mounted on the vertical struts of the lift.

Figure 1 shows a front view of the inventive lift, figure 2 shows a section aa, figure 3 shows a section bb, figure 4 shows a view b, figure 5, 6, 7 shows a sequence of stages of lifting cargo for one cycle of the lift.

The claimed lift contains four vertical racks, pairwise interconnected and made of tubular structures. On top of the struts 1, on the support beams 2, a support bolt 3 is installed, consisting of two beams, interconnected, on which vertical perforated rods 6 are supported, which are load-bearing elements and are welded structures, in the walls of which oval perforation windows 5 are located, located with a certain step along the entire length of the rod 6.

The pitch of the perforation windows 5 is designed for the working stroke of the lifting jacks 7.

Raised (lowered) span 8 is supported by a grab beam 9, which is suspended through rods 6, mounted on the perforation windows 5, on the rods 6 to the bearing crossbar 3.

To carry out the lifting (lowering) of the span structure 8 by intercepting below the grab beam 9, a vertical support beam 11 is mounted on vertical perforated rods 6, which also rests on the supporting bars 10 inserted into the perforation windows of 5 rods 6.

Lifting is carried out by hydraulic jacks 7, the housings of which are fixed on a movable support beam 11, and the rods on a grab beam 9.

On the grab beam 9 and the interchangeable support beam 11, safety bags 12 are installed, between which the underlay sheets are inserted.

To carry out permutations of the undersurface bars 10 into the perforation windows 5 of the vertical perforated rods 6 on the grab beam 9 and the interchangeable support beam 11, work platforms 13 and 14 are located that have access to the stairs 15, mounted on the vertical struts 1 of the elevator.

The inventive lift operates as follows.

A fully assembled hoist (with vertical perforated rods 6, grab beam 9 and movable support beam 11) is installed under the lifting (lowering) span (installation procedure is not shown in the drawings and in the description). In the initial position, the movable support beam 11 and the grab beam 9 are at a minimum distance from each other and, by means of shims 10 inserted into the perforation windows 5, are suspended on vertical perforated rods 6. The rods of the hydraulic jacks 7 are in the retracted position. When the jacks 7 are turned on for lifting, the underfloor bars 10 supporting the grab beam 9 are released. The released underfloor bars are immediately removed from the perforation windows 5 on the vertical perforated rods 6. In order to prevent the hydraulic jacks 7 from stopping due to jamming of the underfloor bars 10 , the height of the perforation windows 5 on the vertical perforated rods 6 is made larger than the height of the support bars 10. Thus, the released grab beam 9 together with the span The second building 8 (if it is already supported by the grab beam 9) rises one step of perforation. The load at this time is transmitted through hydraulic jacks 7 to the movable support beam 11, which in turn is supported by shims 10 installed in the perforation windows 5 of the vertical perforated rods 6. The next time the perforation windows 5 on the vertical perforated rods 6 coincide with the windows on the catch beam 9, the installation of the support bars 10 for the next support of the grab beam 9 on the vertical perforated rods 6. After the standard installation of all the support bars 10 under the grab ball 9, the operation of lifting jacks automatically stops by activating the limit switches and turning off the oil pump station (not shown in the drawings). Next, pulling up the movable support beam 11 to the next perforation window 5 on the vertical perforated rods 6. For this, jacks 7 are turned on to tighten the jack housings connected to the movable support beam 11. At the same time, the support bars 10 supporting the movable support beam are released and immediately removed. 11. The rise is carried out until the next windows 5 perforation on the vertical perforated rods 6 coincide with the windows on the movable support beam 11, after which installation one-piece bars 10 in the normal position for supporting the movable support beam 11 on the vertical perforated rods 6. The lifting of the supporting support beam 11 stops automatically, as well as when lifting the grab beam 9 with a span structure 8.

Further cycles are repeated. The process of lowering the span is carried out in the reverse order.

The declared lift is recommended to be used mainly in the construction or dismantling of large railway bridges with shaped spans with inclined portals at both ends of the farm.

At least two lifts are required to carry out these works.

Claims (1)

A hoist comprising vertical racks, on which a crossbar is installed horizontally from above, having attachment points for the load-bearing element, hydraulic power elements, characterized in that the load-bearing element contains vertical perforated rods in contact with the pick-up and the interchangeable support beams resting on the support bars, re-installed in windows perforations of vertical perforated rods, and power elements, including hydraulic jacks, connect the grab beam and the interchangeable support beam, the hoist is provided with working areas arranged on podhvatnoy and the adjustable support beams having access to ladders, fixed on vertical lift racks.

Images