CN211472569U - Subway station foundation ditch earthwork excavation is with portable dust keeper of full coverage - Google Patents

Abstract

The utility model discloses a full-coverage movable dustproof device for excavation of foundation pit earthwork of a subway station, which comprises a retaining wall, a fixed supporting device and a dustproof net; the fixed supporting device comprises a fixed rod, a guide rail, a guide wheel, a buffer block, a spring, a traction rope and a steel wire rope; the guide wheels are embedded in the guide rail along the front-back direction and can slide along the guide rail, and the guide wheels, the springs and the buffer blocks form an integral buffer guide wheel; the connecting shaft and the buffer block of the guide wheel are provided with corresponding rope holes, the fixed end of the traction rope is fixed on the guide wheel at the front end, and the traction rope sequentially passes through the guide wheel, the spring and the buffer block through the rope holes to extend out of the guide rail, so that the buffer guide wheels are connected together in series; the spring can give the effort of a crescent of subordinate's guide pulley when deformation, makes subordinate's guide pulley driven gradually, is different from the current inertia force through the collision and drives the guide pulley, has guaranteed the stability of a plurality of guide pulleys when sliding in the guide rail, has reduced the dead probability of guide pulley card.

Description

Subway station foundation ditch earthwork excavation is with portable dust keeper of full coverage

Technical Field

The utility model belongs to the technical field of the foundation ditch is dustproof, concretely relates to subway station foundation ditch earthwork excavation is with portable dust keeper of full coverage.

Background

At present, environmental management becomes an important subject and becomes a main research object in a new period, in the process of subway construction, a large amount of earthwork and stony work exists in the foundation pit construction stage, dust emission becomes a main treatment object, the earthwork work basically runs through the whole construction process in the subway station construction, and in order to adapt to high-pressure normalized management of dust emission control and deeply implement decision deployment about continuous improvement of atmospheric pollution control, effective treatment measures must be made for earthwork dust emission treatment.

The existing dust screen is generally fixed on two sides of a foundation pit through a fixed supporting device, but due to the defects in the structure, the function is single, the use is troublesome, when the dust screen is opened, the dust screen is generally pulled from a traction end by utilizing a rope, guide wheels on two sides of the dust screen slide in guide rails, and the dust screen is accommodated through collision among the guide wheels; but when actual operation, the collision between the guide pulley blocks easily, leads to opening the process and breaks off, needs the manpower to handle, but the guide pulley is located inside the guide rail, and there is the dust screen in the outside, and the processing degree of difficulty is big, has invested a large amount of human cost and time cost, has brought the trouble for people, and the rope generally exposes simultaneously, generally stacks together when the rope does not use, and the reuse is tied a knot easily, therefore it is necessary to study a subway station foundation ditch earthwork excavation with the portable dust keeper of full coverage.

Disclosure of Invention

Defect and problem to existing equipment existence, the utility model provides a subway station foundation ditch earthwork excavation is with portable dust keeper of full coverage, effectual use that exists among the existing equipment of having solved is troublesome, the dust screen is opening the problem that the in-process guide pulley blocks easily and dies and the rope is tied a knot easily.

The utility model provides a scheme that its technical problem adopted is: a fully-covered movable dustproof device for earth excavation of a foundation pit of a subway station comprises a retaining wall, a fixed supporting device and a dustproof net; the inner side of the retaining wall is a foundation pit, the fixed supporting devices are fixed on two sides of the retaining wall and used for supporting and fixing the dustproof net, and the dustproof net covers the foundation pit; the fixed supporting device comprises a fixed rod, a guide rail, a guide wheel, a buffer block, a spring, a traction rope and a steel wire rope; the fixed rods are fixed above the retaining walls on the two sides at intervals along the vertical direction and extend out of the retaining walls, and guide rails are transversely fixed on the extending sections of the fixed rods; the guide wheels are multiple and are embedded in the guide rail along the front-back direction and can slide along the guide rail, one side of the spring is fixed on the rear side of the guide wheels, the other side of the spring is fixed with the buffer block, and the guide wheels, the spring and the buffer block form an integral buffer guide wheel; the connecting shaft and the buffer block of the guide wheel are provided with corresponding rope holes, the fixed end of the traction rope is fixed on the guide wheel at the front end, and sequentially passes through the guide wheel, the spring and the buffer block through the rope holes to extend out of the guide rail, so that the buffer guide wheels are connected together in series; two ends of the steel wire rope are respectively fixed on the outer sides of the guide wheels on the two sides, so that the steel wire rope above the foundation pit is formed at intervals, and the dust screen is fixed on the steel wire rope.

Furthermore, a turn buckle is arranged in the middle of the steel wire rope, and two ends of the steel wire rope are fixed on the guide wheel through the opposite pull rods.

Further, the setting width of dead lever is 2 m.

Furthermore, the buffer block is a rubber block, and pulleys are arranged at the upper end and the lower end of the rubber block.

The utility model has the advantages that: the utility model is characterized in that a spring is fixed on the guide wheel, a buffer block is fixed at the rear end of the spring, rope holes are correspondingly arranged on the connecting shaft of the buffer block and the guide wheel, and the fixed end of the traction rope is fixed on the guide wheel at the front end, sequentially passes through the rope holes of the connecting shaft, the center hole of the spring and the rope holes of the connecting shaft and extends out of the guide rail; can make the guide pulley by preceding to the back along the guide rail in proper order slip through the pulling haulage rope, higher level's guide pulley is at the slip in-process, buffer block and subordinate's guide pulley contact, make spring deformation, the spring can give subordinate's guide pulley crescent effort when deformation, make subordinate's guide pulley driven gradually, be different from the current inertial force through the collision and drive the guide pulley, the stability of a plurality of guide pulleys when sliding in the guide rail has been guaranteed, the dead probability of guide pulley card has been reduced, the normal operating of equipment has been guaranteed.

Simultaneously the utility model discloses hide the haulage rope in the track, be different from present expose the rope in external environment, rational in infrastructure, convenient to use makes the use of dust screen convenient and fast more, gives people and offers convenience, and is with low costs, effectual, facilitate promotion and use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the guide wheel and the guide rail.

Fig. 3 is a top view of the present invention.

Fig. 4 is a schematic structural view of the buffer block and the spring.

Fig. 5 is a state diagram of pulling the traction rope.

The reference numbers in the figures are: 1 is a retaining wall, 2 is a foundation pit, 3 is a fixing rod, 4 is a fixing bolt, 5 is a steel wire rope, 51 is a counter pull rod, 52 is a pull ring, and 53 is a turn buckle; 6 is a guide rail, 7 is a guide wheel, 71 is a connecting shaft, 72 is a pulley, 8 is a spring, 9 is a buffer block, 10 is a traction rope, and 11 is a dust screen.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1: the embodiment aims at providing a full-coverage movable dustproof device for the earth excavation of a foundation pit of a subway station, which comprises retaining walls 1 at two sides, a fixed supporting device and a dustproof net 11; retaining wall 1 is located the both sides of foundation ditch 2, and fixed support device fixes in the both sides of retaining wall 1 for support and fixed dust screen 11, dust screen 11 is fixed on fixed support device, and covers in the top of foundation ditch 2, protects the foundation ditch, prevents that dust or foreign matter from falling into in the foundation ditch.

Aiming at the problem that a guide wheel is easy to be blocked in the existing equipment, the guide wheel is improved on the basis of the existing structure, the guide wheel is provided with a buffer block, the buffer block realizes the buffer function through a spring, the specific structure is shown in figure 1, and the fixed supporting device comprises a fixed rod 3, a guide rail 6, a guide wheel 4, a buffer block 9, a spring 8, a traction rope 10 and a steel wire rope 5; the dead lever 3 is fixed in the top of both sides retaining wall and extends the retaining wall along vertical interval, and the interval width of dead lever is 2m, and dead lever 3 passes through expansion bolts to be fixed in the inboard of retaining wall, and dead lever 3 is as the support of supporting rail.

The fixed rod 3 is fixed on the retaining wall 1 and is a fixed section and an extending section extending out of the retaining wall 1; a guide rail 6 is transversely fixed on the extending section, the guide rail 6 is arranged at the position 5cm below the end part of the fixed rod, and the guide rail is a 250-type guide rail in specific implementation; the guide wheels 7 are multiple and are embedded in the guide rail 6 along the front-back direction and can slide along the guide rail.

One side of the spring 8 is fixed on the rear side of the guide wheel 7, and the other side of the spring 8 is fixed with a buffer block 9; as shown in fig. 4, the buffer block 9 becomes a buffer between the upper-level guide wheel and the lower-level guide wheel, the buffer block is fixed on the upper-level guide wheel, the connecting shaft 71 of the guide wheel 7 and the buffer block 9 are provided with corresponding rope holes, the fixed end of the traction rope 10 is fixed on the guide wheel at the front end and extends outwards to the guide rail through the rope holes sequentially passing through the rope holes of the guide wheel, the central hole of the spring and the rope holes of the buffer block, the traction end of the traction rope 10 is pulled to drive the guide wheel at the front end to move backwards, as shown in fig. 5, the rear side of the guide wheel is provided with the spring 8, the buffer block 9 is arranged at the rear end of the spring 8, the guide wheel 7, the spring 8 and the buffer block 9 form an integral buffer guide wheel, and the traction rope connects; the buffering guide wheel of upper level passes through buffer block and the buffering guide wheel elastic contact of subordinate to higher level's buffering guide wheel can exert a gradual increase effort to subordinate's buffering guide wheel, makes subordinate's buffering guide wheel driven slowly, and the current mode through the collision is with subordinate's guide wheel drive, has not only protected the guide wheel, prevents simultaneously that the guide wheel from dying at gliding in-process card, has reduced the number of times of maintenance, has improved work efficiency.

Two ends of the steel wire rope 5 are respectively fixed on the outer sides of the guide wheels on two sides, so that the steel wire rope 5 arranged above the foundation pit at intervals is formed, the dustproof net 11 is fixed on the steel wire rope, and the dustproof net is arranged above the foundation pit.

During specific implementation, the dust screen is the dustproof green screen, the length of the single dustproof green screen is 50m, the steel wire ropes are arranged at an interval of 5m, namely 10 steel wire ropes are arranged on the single dustproof green screen, the dustproof screen is fixed on the steel wire ropes through the binding wires, when the dustproof screen is unfolded, the steel wire ropes are fixed with the dust screen, so that the steel wire ropes keep the interval of 5m unchanged, namely, when the dustproof screen is unfolded, the steel wire ropes are arranged above the foundation pit at equal intervals, and the arrangement interval is 5 m.

Example 2: this example is substantially the same as example 1, except that: the present embodiment further describes the driving manner of the wire rope and the traction rope.

The middle part of the steel wire rope is provided with a turn buckle 53, the turn buckle 53 can adjust the tightness of the steel wire rope, and further adjust the tension degree of the dust screen, so that the dust screen is flatly arranged above the foundation pit, as shown in fig. 2-3, the middle part of the connecting shaft 71 is fixed with an outward opposite pull rod 51, the outer end of the opposite pull rod 51 is provided with a pull ring 52, and the steel wire rope is fixed in the pull ring 52.

Simultaneously the utility model discloses when specifically using, the traction end of haulage rope 10 is fixed on the rope sheave, the front end of dust screen is fixed with the front end rope, be provided with driving hand wheel on the rope sheave, twine the haulage rope on the rope sheave through driving hand wheel, accomplish the action of opening of dust screen, can expand the haulage rope from the rope sheave through manual traction front end rope, the action of closing the dust screen is accomplished, be different from present exposing the haulage rope external environment, make when accomodating the haulage rope pile up together appear the phenomenon of knoing, expand the difficulty when using once more.

Example 3: this example is substantially the same as example 1, except that: the present embodiment further defines the buffer block.

The buffer block is the block rubber, and the upper and lower both ends of block rubber are provided with the pulley to make the buffer block can slide in the track, the buffer block material is the block rubber simultaneously, has alleviateed and has the collision dynamics between the guide pulley, has the effect of protection and buffering to the guide pulley.

Claims (4)

1. A fully-covered movable dustproof device for earth excavation of a foundation pit of a subway station comprises a retaining wall, a fixed supporting device and a dustproof net; the inner side of the retaining wall is a foundation pit, the fixed supporting devices are fixed on two sides of the retaining wall and used for supporting and fixing the dustproof net, and the dustproof net covers the foundation pit; the method is characterized in that: the fixed supporting device comprises a fixed rod, a guide rail, a guide wheel, a buffer block, a spring, a traction rope and a steel wire rope; the fixed rods are fixed above the retaining walls on the two sides at intervals along the vertical direction and extend out of the retaining walls, and guide rails are transversely fixed on the extending sections of the fixed rods; the guide wheels are multiple and are embedded in the guide rail along the front-back direction and can slide along the guide rail, one side of the spring is fixed on the rear side of the guide wheels, the other side of the spring is fixed with the buffer block, and the guide wheels, the spring and the buffer block form an integral buffer guide wheel; the connecting shaft and the buffer block of the guide wheel are provided with corresponding rope holes, the fixed end of the traction rope is fixed on the guide wheel at the front end, and sequentially passes through the guide wheel, the spring and the buffer block through the rope holes to extend out of the guide rail, so that the buffer guide wheels are connected together in series; two ends of the steel wire rope are respectively fixed on the outer sides of the guide wheels on the two sides, so that the steel wire rope above the foundation pit is formed at intervals, and the dust screen is fixed on the steel wire rope.

2. The subway station foundation pit earthwork excavation full-coverage movable dustproof device as claimed in claim 1, wherein: the middle part of the steel wire rope is provided with a turn buckle, and two ends of the steel wire rope are fixed on the guide wheel through the opposite pull rods.

3. The subway station foundation pit earthwork excavation full-coverage movable dustproof device as claimed in claim 1, wherein: the setting width of dead lever is 2 m.

4. The subway station foundation pit earthwork excavation full-coverage movable dustproof device as claimed in claim 1, wherein: the buffer block is a rubber block.

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