SU848650A1 - Device for pressing-in a descending roof support - Google Patents

Description

one

The invention relates to mine construction, relates to equipment for the sinking of vertical shafts with a roof support and can be used in mining, geological prospecting and the construction of underground structures ..

A device for pushing into the ground drop support, comprising a head, stops and power cylinders, with each stop made in the form of a console rigidly clamped into the head.

The disadvantage of such a device is the perception of large bending moments, which leads to a large consumption of material, such as reinforced concrete, on the head. In addition, this device does not allow repeated use.

The closest to the proposed technical essence and the achieved result is a device that includes an end cap, stops hinged to an ogolnikik and power cylinders mounted at the bottom of the stops. At the same time, the stops are made in two consoles.

one console of each abutment facing the barrel for interacting with the power cylinder, and the opposite rigidly supported on the ground near the barrel surface.

However, the known device requires a mandatory support of the supports on the ground near the barrel surface.

to In addition, when penetrating the trunk with a drop support, local subsidence of soil occurs on the near-barrel surface. Because of this, the stops come out of the horizontal position, and the power cylinders deviate from the vertical. In this case, due to the locking nature of the drawdown, each power cylinder receives a different deviation, which leads to a bias

20 lowering lining, as each power cylinder transmits a different force to the lining. The bends of the supports increase with the depth of the crush, which limits the use of the device for carrying out

deep lining, especially in dissimilar soils.

Claims (2)

The purpose of the invention is to prevent deflections when pressing 3 & SRI. The goal is achieved in those in the device, which includes a head, stops, pivotally connected to the head, and power cylinders, in the lower part, the stops are made in the form of a right triangle and are installed with the possibility of contact with the internal surface of the head, with a vertical tail. The drawing shows the proposed device for crushing the supporting shaft of a shaft shaft into the ground, a section along the central axis of the excavation. The device includes an end cap 1 stops 2 and power cylinders 3. Each stop 2, having a triangle shape in longitudinal section, is mounted inside the head end 1 by means of a hinge 4. A horizontal face 5 of stops 2 faces the barrel 6 and interacts with the power cylinder 3 and is adjacent to it face 7 is rigidly supported on the inner surface of the head 1. The downhole support crushing device is mounted in the following sequence. First, the head 1 is constructed, which is the broadened part of the barrel 6, by sinking one of the known methods and fixing the soil in the fixed space. When constructing the end cap 1 at the level of fastening the lugs 2, a support crown 8 is made with brackets 9 installed in it. In each crown matte 9 is mounted by means of a hinge 4 the stop 2 and equip it with a cylinder 3, at the same time, lower support 10 is installed inside the end cap 1, for example, from block pins to the level of retracted rods 11 cylinder forces 3. Lowering the lining support 10 into the ground by the proposed device is carried out in cycles that include crushing the lining 10 in forward current, 11, cleaning the rods 11 to the initial position, increasing the lining 10 d level harvested rod 11 and the barrel 6 uglubki before another eadavlivaniem. During the squeezing of the descending lid 10, the stops 2 rotate around the hinges 4, resting on the inner surface of the head end 1. In this case, the stops 2, having a triangular shape in longitudinal section, are a rigid non-deformable structure, supported by a practically non-deformable head 1 and ensuring the strict verticality of the power cylinders 3. The use of the proposed device significantly reduces the lowering of the roof support when pushed, and thus allows for the holding of shafts for large g Lubin. Claims An apparatus for crushing lower mounting, including a head, stops, pivotally connected to the head. and power cylinders mounted at the bottom of the lugs, which are designed so that, in order to prevent distortions of the lining when pushed, the lugs are made in the shape of a right-angled triangle and are installed with the possibility of contact with the inner surface of the tip by a vertical leg. Sources of information taken into account in the examination 1. S. Taubkin The construction of the subway tunnels. M., Nedra, 1967, p. 88-89. 2. USSR author's certificate number 527515, cl. E 21 D 1/08, 1979.