SU1229354A1 - Entry-driving shield unit - Google Patents

Description

The invention relates to the mining industry, namely, tunneling shield assemblies, and can be used for mining, tunnels and hydraulic structures.

The aim of the invention is to increase the reliability and maneuverability of the unit.

Figure 1 shows the tunneling shield unit, a longitudinal section; 2 is a view A of FIG. 1.

The unit consists of cylindrical ring sections BeV, G, connected in series into a cylindrical shell I, on the outer surface of which helix 2 is placed along a helical line. Mutually mated ring sections (B, C and C, D) are interconnected along the perimeter of hydraulic jacks 3 located along the chord to the circumference of the cylindrical annular sections and at an acute angle of the plane of the cross section. The rod parts of hydraulic jacks 3 pins 4 are attached to one (for example, B), and the pins 5 piston parts to another (for example, B) of mutually conjugated ring sections.

In the front part of the unit there is an executive unit 6, equipped to develop the nozzles 7. In the middle part of the second (B) and postdup sections to prevent: turning the tail part of the unit during operation of the executive body 6 and the first ring section (B) 8, on completion: 1 on the sections with the help of hinges 9 and hydraulic jacks 10. The strips 11 are located under the joints of the sections.

The device works as follows.

Consistently connected in a cylindrical shell 1 ring sections B, C, D are located in the mine workings. The hydraulic jacks 10 are turned on the annular sections C and D, extending the batons and turning the stabilizers 8s into sectors, around the hinges 9. At the same time, the stabilizers 8 are spread into the working surface, fixing the circular sections C and D relative to the rock mass surrounding the aggregate. After that, the working fluid is supplied to the hydraulic jacks 3 movements connecting the pins 4 and 12 with the annular

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sections B and B. Due to the fact that the hydraulic jacks 3 are located along the perimeter, along the chord to the circumference of the cylindrical shell and at an acute angle d. To; goskosti cross-section, the ring section B when the hydraulic jacks 3 work begins to rotate relative to the longitudinal axis of the excavation with simultaneous movement to the face (the effect of the screw). Knives 7 of the executive body 6 remove shavings of soil, which through the windows of the executive body falls inside the switchboard assembly and is loaded with a loading device into a trolley (not shown). The presence of two bare boards at the ledge at the bottom determines less energy-intensive destruction of the ground than in the case of front-end actuators. The annular gap formed between sections B and C overlaps the strips 11.

After the section B extends to the height of 2; s, the displacement equal to the step of the slide moves the supply of working fluid to the hydraulic jacks 10 of section B. The stabilizers 8 of section B enter inside the shell 1. Section C is melted.

The hydraulic jacks 3, connecting sections B and C are turned on, they shorten their length (the rods are retracted), and the hydraulic jacks 3 connecting sections C and D are extended. Screw movement of the ring section B takes place before joining it with section B. The fluid supply is reversed in the plane of hydraulic jack 10 of section B, they extend the stabilizers 8 and spread the section into the excavation, and on section D stabilizers 8 enter the sheath 1. The hydraulic jacks 3 are turned on, connecting sections B and G. The section. G is pulled up to section B by j movement. In all the steps described for the movement of the screw, the spiral on sections B and G slides in the groove made in the array earlier by the spiral of section B.

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 The hydraulic jacks 3, connecting sections B and C are turned on, and the development of the bottom again occurs. The cycle of operation is repeated.

iS As the machine progresses, the outcropping area of the well-known types of supports is fastened.

FIG. 2

Claims (1)

SHIELDING SHIELD UNIT, including an actuator, a cylindrical shell with screw winding on its outer surface, connected with displacement hydraulic jacks located at an acute angle to its longitudinal axis, and supporting elements, characterized in that, in order to increase the reliability of operation and maneuverability unit, the shell is made of annular sections and is equipped with strips located 'on the inner side of the shell under the joints of the sections, while the annular sections are interconnected by means of hydraulic jacks movements, and the supporting elements are made in the form of sectors, pivotally mounted on the annular sections and are additionally connected to the latter by means of hydraulic control cylinders. $ 1 / 2.1 freeezzr ns