SU1362835A1 - Tunneling shield - Google Patents

Abstract

The invention relates to the mining industry and construction, namely to shield tunneling. The purpose of the invention is to increase the performance of the shield by reducing the time for removal and installation of horizontal shelves (GP), reducing the complexity of their installation, reducing deployment efforts and increasing reliability. The shield includes a hull 19 (k) with jacks, an executive bracket and a GP 5, the ends of which are mounted on the hull. The GP 5 is made in the form of an elastic element with its preliminary deformation in the direction to the upper part of K. The elastic element can be made in the form of a bar metal band or in the form of strings stretched across the shield axis, which can be metal or made of other materials. One end of the spring belt is attached to the flanges of the hinge axis 18, and the other is connected to the rotary drum 19. According to another embodiment, one end of the GP 5 is installed in curved rails in the upper part K with the possibility of movement through the axis. When meeting on the route of penetration of bonded soils all over the cross section, the GP 5 is removed from the bottom, for which, by rotating the rotary drum 19, the length of the GP 5 is increased or one end is displaced, or both ends of the GP 5 in curvilinear guides. 8 hp f-ly, 8 ill. (L with a yoo oo has eaten W Fm.Z

Description

The invention relates to the mining industry and construction, in particular to shield tunneling.

The aim of the invention is to improve the performance of the shield due to the shortening of the time for removal and installation of horizontal shelves, reduced. reducing the labor intensity of installing them, reducing implementation effort and improving reliability.

Figure 1 shows the tunnel shield, a longitudinal section; figure 2 is the same, view sperd one; figure 3-6 - installation diagrams of horizontal shelves; Fig. 7 shows a horizontal shelf in the form of a series of tensioned strings with their ends placed in their rails, top view; Fig. 8 shows a horizontal shelf in the form of a series of tensioned strings with a combination of their ends by crossbars, a top view.

A shield for driving a tunnel includes a housing 1 with shield jacks 2, a conveyor-loader 3, a working body of selective action 4, a horizontal shelf 5.

The housing 1 has a front end 6 and a flange 7, an intermediate flange 8 and a rear flange 9. Between the flanges 8 and 9 are installed shield shield jacks 2, and between the flanges 7 and 8 there is a horizontal shelf 5 ..

In the upper part of the housing 1 on the crown 35 8 and the curved guide 21, the matte 10, having the possibility of rotation around the vertical axis, is the working body of the selective

those. the distance between the ends of the opposite guides 21 and 23 is longer than the length of the horizontal flange. If one guide 21 (figure 5) is made, the distance between the hinge axis 18 and the end of the curved guide 21 is longer than the horizontal flange five.

Step 4, including a pivoting boom 11, two levers 12, a telescopic handle 13 with a spatula 14 on it.

To the body 1 of the shield and to the levers 12 are attached the hydraulic jacks 15 of the rotation of the swivel boom 11. The swivel boom 11 is mounted on the bracket 10 through two transverse axes 16.

The elastic element can be made in the form of a spring metal tape, or in the form of a series of strings 17 strung along the shield axis, which can be metal or made of other materials.

One end of the spring belt can be fixed to the flanges 7 and 8 of the shield body 1 by means of a hinge axis 18, and the other end of the spring belt is connected to the shield body by means of a rotary drum 19.

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The end of the spring belt can be mounted on the shield body also by means of a rotary drum 20 instead of fastening by means of a hinge axis 18.

In another embodiment of the attachment of the spring tape, one of its ends is mounted in curved guides 21, made in the upper part of the shield body 1, movable by means of an axis 22. It is possible to install both ends of the spring tape movable relative to the curved guides 21 and 23.

If the ends of the spring belt are placed in curved guides or in one guide (Figures 5 and 6), the distance from the hinge axis 18 or between the ends of the guides 21 and 23 must be equal to or less than the length of the horizontal flange 5 This is necessary in order so that when the horizontal column 5 is removed from the bottom zone, it is located within the dimensions of the flanges 7 and 8 (shown in dotted lines in figure 5 and 6).

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To be able to tension the horizontal flange 5 (elastic element) without additional accessories, the curved guides 21 and 23 are made with lower elongated ends with an increasing distance between the clamp or the hinge axis

8 and curved rail 21,

those. the distance between the ends of the opposite guides 21 and 23 is larger than the length of the horizontal flange 5. In the case of one guide 21 (fig. 5), the distance between the hinge axis 18 and the end of the curved guide 21 is longer than the length of the horizontal flange 5.

For moving the ends of the horizontal flange 5, for example, hydraulic cylinders for displacing the ends of the horizontal flange can be installed, any other device is used.

It is possible to move the ends of the horizontal shelf 5 manually or by means of a working body of selective action 4.

In the case of an elastic element in the form of a row of drpyH 17 stretched across the shield axis, each of them can be placed in their curvilinear guides 24 by means of bricks 25, installed with the possibility of movement in curvilinear

guides 24. In this case, the shield body 1 is made of a series of parallel curved guides 2A. The ends of the strings can be joined by crossbars 26 placed in the guides 21 and 23 with the possibility of movement.

The string 27, mounted on the downhole side of the shield, is usually reinforced to provide higher strength.

The distance between the cr pyns is selected from the condition that the soil to be developed is held on a horizontal shelf 5 formed of a series of stretched strings;

When sinking in loose soils and unstable soils, the bottom is held by a horizontal shelf 5.

As the shield advances with shield jacks 2, the soil from the horizontal shelf 5 falls down and is scooped onto the conveyor-loader 3 by the working body of selective action 4.

When meeting along the road of penetration of bonded soils, the horizontal shelf is removed from the bottom across the entire bottom section, for which, rotating the rotary drum 19 or the drums 19 and 20, increase the length of the horizontal flange 5 (elastic element), either one end or both ends are displaced. horizontal shelf 5 in curved guides 21 and 23.

Due to the fact that the horizontal shelf 5 is made in the form of an elastic metal element with its preliminary deformation towards the upper part of the shield case 1, even with a slight displacement of the ends of the horizontal shelf 5 upwards and weakening its horizontal shelf 5 due to the elastic forces caused by the preliminary its deformation is shifted automatically upwards and is established along the contour of the shield body 1 within the dimensions of the flanges 7 and 8 (Figs. 3-6, shown by a dotted line). In this way, horizontal shelf 5 is removed from the bottom when it encounters bound soil.

The development of the bottom is carried out by a working body of selective action 4.

In the event of the occurrence of loose or unstable soils in the bottomhole, the horizontal shelf 5 is installed in

a working position, for which either the ends of the elastic element are wound by means of rotary drums 19 and 20, or the ends of the elastic element are displaced down along curved rails 21 and 23.

Claims (8)

1. Tunnel tunnel, including a housing with shield jacks, an actuator and a horizontal shelf, the ends of which are installed on the shield case, which is so that, in order to increase shield productivity by reducing the time for removal and installation of horizontal shelves , reducing the complexity of their installation, reducing the effort to introduce and increase the reliability of operation, the horizontal shelf is made in the form of an elastic element with its preliminary deformation towards the upper part of the body. 2. Shield pop. 1, distinguished by the fact that the elastic element is made in the form of a spring tape. 3. A shield according to claim 2, characterized in that one end of the spring band is hinged to the shield body and the other end is connected to the shield body by means of a rotary drum. 4. A shield according to claim 2, characterized in that both ends of the spring belt are connected to the shield body by means of rotary drums. 5. Shield pop. 1, different. This is due to the fact that the elastic elements are made in the form of a series of strings stretched across the shield axis. 6. The shield according to the PP.1,2 and 5, about tl and h aa y and with the fact that the upper part of the body of the shield is made with a curved guide, in which one end of the elastic element with ability to move. I 7. The shield according to claims 1, 2, 5, 5, and 5, is due to the fact that both ends of the elastic element are mounted with the possibility of movement in curved rails made in the upper part of the body of the shield. 8. The shield according to claim 5, characterized in that the upper part of the shield body is made with a row of parallel 513628356 HO located curvilinear net- 9, Shield loop lp.5 and 8, are distinguished, in which by means of God and with the fact that the string is installed with the possibility of drawing on the downhole side of the shield, moving the ends of the strings reinforced. FIG. one 20 2 and./ 22 18 23 Fi.b 27 L Fig.8 Compiled by V.Pushkarsky Tehred L. Serdyukov Order 6353/22 Circulation 453Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIG. 7 T 2S 23 Proofreader S. Shekmar