RU2714174C1 - Span with shields of covering of inter-wheel space - Google Patents

Abstract

FIELD: building of bridges.

SUBSTANCE: invention relates to mechanized bridges. In mechanized bridge including wheeled self-propelled chassis, mechanism for installation of obstacle bridge and arranged on it bridge unit consisting of span, intermediate support and auxiliary equipment, in span, which is a track-type structure allowing folding of the pins in two and shifting them to provide for convenience of transportation, consisting of two ruts, on the inner edge of the roadway of each of the ruts, the shields of overlapping of the interstore space are installed and fixed, made in the form of plates of rectangular shape, curved out of metal sheet, reinforced with stiffeners, with the possibility of movement of these shields relative to span of span during transfer of stakes from transport to working position and back. Shields of covering one of sides through two holes are fixed to the edge of the roadway of one of the span using brackets, spring retainers locked by needle spring pins, without possibility of considerable movement relative to the carriageway. Other side of the flooring shield is secured through the gaps between the angles to the edge of the driveway. Shields of overlap on folding halves of track span are fixed mirror-like to balance center of gravity relative to axis of machine.

EFFECT: disclosed is superstructure with shields of overlapping of inter-wheel space.

1 cl, 4 dwg

Description

The invention relates to ferry-bridge means, and more particularly to mechanized bridges.

The spans of TMM heavy mechanized bridges of similar design are known (see TMM Material and Operation Manual, Moscow, Military Publishing, 1964, p. 106); ТММ-3М (see. Technical description and operating instructions ТММ-3М00.00.000ТО Kaliningrad, “Sentinel Baltika”, 1980, p. 38), which are a welded construction of a rut type that allows folding the ruts in half and moving them to each other on a lifting frame to ensure the required size according to the conditions of transportation. The span consists of two tracks, a folding strut and cable ties between the tracks, ensuring the correct orientation of one track in relation to the other.

A disadvantage of the known spans is the inter track space formed after the spacing of the tracks, which negatively affects the control ability of the driver of the ferry equipment along the bridge equipped with spans, which reduces the speed of the bridge and its throughput.

The span structure TMM-3M2 is also known (see Operating Instructions TMM-3M2.00.000 RE, Galich Autocrane Plant, 2017, p. 31), in which removable overlap panels are used to overlap the track gauge. The disadvantage of this span is the high complexity and significant inconvenience of installing these shields on the span.

Also known is the invention RU 2659293 C2 of November 2, 2017, in which folding floorboards are used to overlap the track gauge. The disadvantage of this span is the low bearing capacity of these shields in case of accidental collision of narrow gauge vehicles moving along the bridge.

The inventive device is aimed at solving the problem of improving the performance of the span of a heavy mechanized bridge due to the design features of the proposed inter-gauge overlap panels.

The solution to this problem is achieved by the fact that in a mechanized bridge, including a wheeled self-propelled chassis, a mechanism for installing the bridge on an obstacle and a bridge unit placed on it, consisting of a span structure, an intermediate support and auxiliary equipment, in a span structure, which is a gauge type design that allows folding the ruts in half and shifting them to ensure ease of transportation, consisting of two ruts, a fixer is installed on the inner edge of the carriageway of each rut There are inter-gauge overlap shields made in the form of rectangular-shaped plates curved from a metal sheet reinforced with stiffeners, with the possibility of moving these shields relative to the spans of the span when translating the ruts from the transport to the working position and vice versa.

The inter-gauge space overlapping panels are made in the form of rectangular-shaped plates, curved curved from a metal sheet reinforced with stiffeners. Overlapping boards of one of the sides through two holes are attached to the edge of the carriageway of one of the spans of the superstructure using brackets, spring clips, locked with needle spring cotter pins, without the possibility of significant movement relative to the carriageway. On the other side, the floorboards through the gaps between the corners are attached to the edge of the carriageway of the other track of the superstructure using brackets, a washer made in the form of a cart with four rollers and a spring clip locked with needle spring pins with the possibility of moving the boards relative to the carriageway of the track by moving a spring-loaded trolley along the shelves of corners located along the width of the floorboards. Six floorboards are installed along the length of the span, the width of which is designed so that when the spans of the span are moved apart to the working position, they completely overlap the formed gauge space. Overlapping panels on the folding halves of the spans are mounted mirror to balance the center of gravity relative to the axis of the machine.

The use of the proposed technical solution will allow closing the inter gauge space formed after the ruts are extended, increasing the confidence of the driver-mechanic by controlling the transported equipment along the bridge and, as a result, increasing the bridge crossing capacity by 10 ... 15%.

The invention is illustrated by drawings, which depict: in FIG. 1 - mechanized bridge in transport position, side view and top; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - node I in FIG. 2; in FIG. 4 - node II in FIG. 2.

The mechanized bridge includes a self-propelled wheeled chassis 1, a lifting frame assembly 2, a hydraulic system with outriggers 3 and a bridge block consisting of a span 4, an intermediate support 5 and auxiliary equipment. The span 4 is a welded thin-walled structure of two tracks 6, allowing folding of the tracks 6 in half and sliding them to ensure ease of transportation, along the carriages of the lifting frame 2 and sliding into working condition. The span 4 consists of two gauge 6, interconnected in a transport position by a folding spacer 7 and cable ties, on the inner edges of the carriageway of the gauge 6 there are fixed inter-gauge overlap panels 8. Inter-gauge overlap boards made in the form of rectangular-shaped plates, curved from a metal sheet reinforced with stiffeners. There are two openings on one side of the rectangular boards for overlapping the inter-track space 8 through which the boards are attached to the edge of the carriageway of one of the tracks 6 of the span 4 using brackets 9, spring clips, consisting of springs 10 and locking washers 11, locked with needle spring cotter pins 12 without the possibility of significant movement relative to the carriageway of gauge 6. On the opposite side, the floorboards 8 through the gaps between the corners 16 are attached to the edge of the carriageway of the other track 6 pro structure 4 using brackets 13, a washer made in the form of a cart 14 with four rollers 15 and a spring clip 17, locked with needle spring cotter pins 18, with the possibility of moving the shields 8 relative to the carriageway of the track 6 by moving the spring-loaded cart 14 along the shelves of the corners 16, located along the width of the floorboards 8. Along the length of the span structure 4, six floorboards 8 of the track gauge are installed, the width of which is designed so that when extending the ruts 6 of the span structure Ia 4 in the operating position they are completely overlapped manner mezhkoleynoe space.

Shields overlap 8 inter track space work as follows. After the preparatory operations have been completed, the tie rods 6 are removed in a marching fashion and the tracks 6 are extended until the folding strut 7 is completely straightened. During the extension of the tracks 6 of the span 4, the overlapping panels 8 are fixed on one of the tracks 6 without the possibility of movement, under the action of the efforts of the expanding tracks 6 are moved relative to the carriageway of the other track 6, along which they are able to move due to the spring-loaded trolley 14 along the shelves of the corners 16 located along the width of the floorboards 8 and the same Menno overlap mezhkoleynoe space. After full straightening of the folding strut 7, it is fixed with a pin. When translating the ruts 6 of the span 4, the overhead shields 8 are moved to their original position in the reverse order.

Claims (1)

A mechanized bridge, including a self-propelled wheeled chassis, a hydraulic system, outriggers and a mechanism for mounting the bridge on an obstacle and a bridge block placed on it, characterized in that the track gauge resulting from the spacing of the spans of the bridge block to its working position with bridge equipment is blocked boards between the gauge, made in the form of rectangular metal plates, curved curved from a metal sheet, reinforced with ribs spans mounted on the inner edges of the carriageway of the spans of the span, with the possibility of moving relative to one of the spans under the influence of the forces arising from the translation of the spans of the span to the working position.

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