PT85626B - DUM LANCO DUM TUNEL OPENING PROCESS WITH SUPPORTED PLATES ON SUPPORT ARMACES AND DEVICE FOR CARRYING OUT THE PROCESS - Google Patents

Abstract

1. Cutter-shield driving mechanism with driving cutters driven forward by a thrust mechanism, there being a piston/cylinder unit (40, 42) attached at one end (38) to each driving cutter (10), characterized in that to the other end of the piston/cylinder unit (40, 42) a supporting member (46) is attached for engagement with a supporting frame (26), and that means (56, 62) are provided to lock the supporting member (46) to the supporting frame (26) so as to resist compression and tension loads.

Description

DESCRIPTIVE MEMORY

The present invention relates to a process for opening a section of a tunnel with opening blades supported on support frames as well as a device for opening a tunnel section with protection of the blades with opening blades supported on support frames, which can be operated by means of a pressure application device, in particular for carrying out the process.

known the process of driving blades of opening of a tunnel section through a hydraulic cylinder assembly, which limits the section of the last, attaching to the hydraulic in claw-like coupling parts of the inner surface of the opening blade, removably. On the one hand, in this device known from the publication DE-OS 19 66 07θ, it is inconvenient the fact that the forces are ejected from the base supported by the arch of a tunnel to cast the cylinder piston

D.D.

bad original high pressure forces are transmitted to the concrete cladding and, on the other hand, handling heavy hydraulic piston and cylinder units requires a lot of effort and is dangerous.

Furthermore, a device is known in which each two support frames are linked together, similarly to what happens in a finish that progresses automatically. As is known in the case of mines, they can be adjusted in advance. This device is technically complicated and of limited application.

The present invention aims to provide a process for opening a section of a tunnel, as well as a device for carrying out this process in particular, which can be performed or handled, respectively, in a quick and simple way and with forces not very large to be exercised by operators.

According to the present invention, the problem is solved if a support frame is connected with the opening blades of the tunnel and if this frame transmits the pressure force to be applied when operating,

According to one of the blades, the other blade.

preferred embodiment of the present invention, the rearmost support annex is connected with the tunnel opening blades, the connection with the rearmost frame is broken after the blade is actuated, then the support frame is removed to be put back as the first support frame in the front area of the blade and connect the blades with the support frame, which is then the most rear.

In the process according to the present invention, all the blades, except the blade to be operated, form a unit with one of the support frames, in particular with the last support frame in the tunnel opening device, so that the blades finally form counter-support for the blade to be operated.

ORIGINAL BAD

In this way, it is prevented that great efforts are transmitted to the fresh concrete coating or that it is necessary to take additional measures to form a solid counter-support.

In a device according to the present invention, in particular for carrying out the process, a piston and cylinder unit is articulated at each end with a piston and cylinder unit at the other end of the piston and cylinder unit. in a support frame and a device for blocking the support member in the support frame has been provided.

As a piston and cylinder unit is designed for each blade, it can be effortless and dangerous, one blade to another.

xi ge

Because the transfer, which of the piston and cylinder unit on one side, blades can be used more eliminated and long, and, on the other hand, the device according to the present works more quickly, so that it can increase the throughput of the tunnel opening.

According to a preferred embodiment, the support member has a hook-shaped appendage for securing under the front edge of a frame and a support and pre-hook that can be fixed at the rear end of the support member. and which is attached from below to the rear edge of the support frame. After the support member is applied to the support frame and the hook is secured at the end of the support member, a compression and tensile connection of the piston and cylinder unit is created in the support frame. The pressure forces must be transferred when the piston of the piston and cylinder unit is moved outwards to drive the blade. The pulling forces then appear on the lamia on the rest, as these prevent a backward movement of the support frames.

According to a preferred embodiment, the support member is made with a double wall, the end of the piston of the

ORIGINAL BAD plunger and cylinder unit is articulated between the walls and two hooks have been provided that can be immobilized by means of wedges. Preferably, it is then fixed between the T-shaped slits outwards to the rear, so that it is possible in the support frame of the hooks and wedges, to quickly support the support member.

In order to increase the walls, for the reception imo bili za a solidity, a support is provided between the support element.

The invention is described with reference to annexes whose figures

Fig. tunnel, in a vis blade for opening from the side;

an

Fig.

the blade of fig. 1 in a pre-ent and d e se view - a ro d t from above;

Fig. seen from the side;

a support organ, on a larger scale, in fig.

3, in a top view;

fig.

a view in the arrow direction (V) of fig fig.

represents a blade (io) for opening the tunnel opening a trode device to which it is part and

a blade protection tunnel made up of a number of blades opening the tunnel. The blade (10) consists of an upper wall (12), a lower wall (1 /.) And side walls (16) and the blade (lo) is provided with a mine based on rear support frames (28) of the blade (10), which is right (18). At the front end, tip (20) of the blade.

(22), is

Wool (2) and (26). The section

ORIGINAL BAD

stronger edge (30) through a joint

serves as formwork when laying a concrete covering (3 ^) ·

Is a bearing support (36) placed behind the tip (20)? in which, by means of an oscillating support (3θ), a cylinder (^ 4θ) of a piston and cylinder unit is articulated. The piston and cylinder unit has a piston (^ 2) directed backwards, which is provided at the free end protruding behind a swing pin (^ 4) in which a supporting member (I | 6) is hinged. The support member (46) serves to immobilize the piston (^ 2) in the direction of compression and tension in the rear support frame (26).

The exact constitution and operation of the support member (4 ¢ 3) are described in more detail, in particular with reference to figs. 3 to 50 supporting member (^ 6) consists of two side walls (48, 50), connected with each other through spaced and reinforcing elements (52) and (5 ^). The walls (^ 18) and (50) receive the support pin (ύύ). The walls (-18) and (50) are provided on the underside of appendages (56) and (5θ) in the form of a hook, which are attached below the front edge (60) of the support frame (26). In this way, the support member (^ 16) is immobilized in the direction of compression of the piston and cylinder unit (40, ^ 12) in the support frame (26).

The immobilization of the support member (46) in the direction of traction on the support frame (26) is done through the hooks (62, 6 ^) that are predicted below the rear edge of the support frame (26). The hooks (62) and (6 ^ 1) are secured to the support member (46) by means of wedges (66, 68), which are applied against the crossbar (70) of a T-shaped element (72) , which is fixed between the walls (^ 8, 50) of the support member (^ 6). After the support member has secured with its hook (56, at the bottom edge of the support frame (26), 5 BAD ORIGINAL can be inserted

...... J

up of

6 ^), after which the hooks are fixed laterally (62, through the wedges (66, 68).

The process and the operating mode of the device are as follows: all the blades (10) are immobilized with their tips (20) located on the same plane and sitting on the support frames (22), (24) and (26) in the rearmost support frame (26), with its supporting member (^ 16). The displacement of the support member (46), in which the rear hooks (62, 64) and wedges (66, 68) are separated, is done through the piston and cylinder unit (40, ^ 12) to which pressure through a conduit (76).

58) hook the front hooks (62, 64) with the ω | gj | hook removal (56 support (2ó), in the tre organ the organ is applied or As soon as the wedges of the frame (66, 6S support (46). There is therefore a rigid support connection (46) and the support frame ( 26) When all the modes are used, all the blades of this support member are immobilized, they move forward successively (10) of the desired distance. the blade (26), pressure exerted by each one transmitted by pushing the support member (46) through the support frame (26), which therefore works indirectly as a counter-support for the blade to be driven.

that and (- 10) s the vi zinh a

As soon as all the tips (2θ) of the blades have been activated again, the hooks (62, 64) and the support ones (^ 6). Now they can support the rear support frame (26). After this, it is done for all support frames (26) which are mounted as test pieces of the support frame (22). The rods pulled towards the plunger tips (42) to such a point that they can be received away from all the blades and find by all organs in one month - the support organs of the plunger (^ 12). blades, the first support frame is removed from the non-supportive support frames (^ 6) are now blades by retracting the (42) to a point where the support frames (2 ^ 1) can be immobilized. When all supporting bodies (^ 6) are

ORIGINAL BAD if they have been attached to the front edge of the support frame (2'l) and are secure, you can tunnel.

the hooks attached to the edge are placed backwards, a further advance of the opening blades of the

Claims (1)

1 * blades Process for opening a section of a tunnel with opening supported by frames, because a frame of advance noses is connected and this frame of support (26) transmits compression on it when moving a blade of the support hair, support (23) character with the opening force for the other opening blades. characterized by the fact that the last tar frame connected with the opening blades tion with the last support frame (26) in (10); move away from the support frame as the first support frame in the cover area (10) and connect the opening blade (lo) with the last support frame (24) in order to resist compression and the posterior support (26) (10) to break the alloy after advancing lamina_ (26) to be placed anterior to the blade of a7 ORIGINAL BAD k '.-2-. traction. _ 3a Device for opening a flight of a tunnel with blade protection, with an opening blade supported on a support frame operable by means of a pressure application device, especially for carrying out the process according to claims 1 or 2, characterized in that, in each opening blade (10), a piston-cylinder unit (40, 42) is hinged with an end (38); on the other end of the plunger-cylinder unit (40, 42), a support piece (46) is hinged to engage the support frame (2b) and a device (56, 62) is provided for compression-resistant and locked fixing the pull of the support piece (46) on the support frame (26). - 4? Device according to claim 3, characterized in that the support piece (46) has a hook-shaped extension (56) for engaging the front edge of a support frame and the rear end of the support piece (46 ) if hooks (62) are provided which engage in the rear edge of the support frame (26) in a fixable manner. BAD OH1GINAL Device according to claim 5, characterized in that a T-shaped (72) extending outwardly (72) is fixed between the walls (48, 50) extending to receive the hooks (62, 64) and wedges (66, 68). _ ₇ a _ Device according to claim 5 or 6, characterized in that reinforcements (52, 54) are placed between the walls (48, 5θ) of the support piece (46). The applicant declares that the first application for this patent was filed in the German Federal Republic on 1 September 1986, under ο η-. P 36 29 730-5 ·