Section hydraulic powered roof supports

 

The invention relates to the mechanization of cleaning works in coal mines, namely the mounting faces. The objective of the invention is to improve adaptability lining at work on weak soils, simplifying the design of the lifting mechanism base, increase its reliability and service life increased by increasing the area of contact bearings with thrust and exceptions shear force on the piston rod of the hydraulic cylinder lifting Foundation. Section hydraulic powered roof supports comprises a base consisting of two parallel based bottom plane on the ground skis with side rails connected by a portal that supports the roof bar rack set between the ski portal gidrotartrat shifting exerted by the roll on a rod placed under the advancing hydraulic cylinder and connected with the side of the face with a conveyor mounted on the rod in a vertical position, the lifting mechanism lifts, hydraulic cylinder including a cylinder and a rod with a flat contact surface and moved along the height of the guide. Support is executed with vzaimootno surface in line contact with the side rails of the ski base. Stock hydrodams the school and vertical planes. 1 C.p. f-crystals, 4 Il.

The invention relates to means for fastening roof in Stopes.

It provides shield when working on weak soils.

The closest technical solution and the achieved result is a shield section, in which the lifting device of the ski base, known from the description of the patent RU 2133828, E 21 D 23/08, 23/04, the applicant firm DE - DBT the Deutsche Bergbau-Technik GmbH, made in the form of hydraulic jacks mounted on the portal through the eyelets of the rod, and a cylinder with pins and mounted in the slide base, located on the lateral inner surfaces of the ski, is based on cravings.

The disadvantage of this device is complex in structure mounting mechanism to the portal and the presence of a point of contact of the convex support of the cylinder with the surface traction, which have significant contact stress, resulting in premature wear and gouging of the contacting surfaces, and, consequently, to increase the resistance to movement of the section.

These drawbacks are eliminated in the present invention the section of powered roof supports.

The claimed invention provides prodeem Foundation.

To achieve provided by the invention a technical result section hydraulic powered roof supports-containing base, consisting of two parallel, resting the bottom of the plane on the ground skis with side rails and connected by a portal that supports the roof bar rack set between the ski portal gidrotartrat shifting exerted by the roll on a rod placed under the advancing hydraulic cylinder and connected with the side of the face with a conveyor mounted on the rod in a vertical position, the lifting mechanism lifts, hydraulic cylinder including a cylinder and a rod, and the rod of the hydraulic cylinder is equipped with a support with a flat contact surface and moved along the height of the guides, and the support is executed with vzaimootno surface in line contact with the side rails of the ski base.

In addition, the piston rod of the hydraulic cylinder is made with a spherical end, fastened to the pole can be rotated in horizontal and vertical planes.

The invention is explained in more detail using the example of its implementation in the drawings, where:

Fig.1 - section hydraulic powered roof supports, General view;

Fig.2 - section As-is

Fig.4 - section b-b of Fig.3.

The shield includes: a base 1 catamaran base type, consisting of two ski interconnected with portal 2, between which is located a craving 3, one end of which is connected with the conveyor 4, and the other with the advancing hydraulic cylinder 5, fastened the other end of the portal 2 base 1, the roof bar 6, the hydraulic jacks 7 installed between the roof bar and the base, the fence 8, connected through four-link mechanism 9 with the base 1.

Ski base 1 has a lifting mechanism, made in the form of a hydraulic cylinder 10, a fixed cylinder 11 on portal 2 and the driven shaft 12 by means of supports 13 with a flat contact surface 14 on the rod 3, which with the possibility of vertical movement is placed in the guide 15 located on the inner side surfaces of the ski base.

Bearing 13 is made with vzaimootno surface for line contact 15 with the side rails of the ski base 1 and fixed to rotate in horizontal and vertical planes spherical end 16, the other end of which is fixed to the rod 12 of the hydraulic cylinder 10.

In the process of coal production cycle involves performing usual two ways.

In the first method, the shifting section is made after the execution of the operation for lowering the roof bar 6, or simultaneously with the interruption of the contact of the roof bar with a roof.

In the second method, the shifting section is performed without separation of the roof bar on the roof, with the so-called "active support".

The process of shifting is as follows.

Served working fluid in the piston cavity of the hydraulic cylinder 10 of advancing, through which the rod 12 acts on the rod 3 mounted on the conveyor 4 and performs in this case the role of the "anchor", and through cylinder 11 on the base 1, and section moves relative to the stationary thrust 3.

When you work on weak soils and the shifting of the shields with the "active support" simultaneously with the shifting operation is performed base-lift, in which the working fluid is supplied into the piston cavity of the hydraulic cylinder 10 of the lifting mechanism of the base, the sliding rod 12 which by means of a support 13, which moves in guides 15 of the side surfaces of the ski base 1 affects the surface traction, lifting the base and prevent it from "overlapping".

In the process of shifting the load from the weight section and the roof pererasti the The shifting of the conveyor is made after the execution of the operation by the shifting of the shields and the lifting of the roof bar.

The shifting of the conveyor is as follows.

Served working fluid in the rod cavity of the hydraulic cylinder belt 5, which, Contracting, moves the rod 3 and fixed thereto, the conveyor belt 4 relative to the stationary shield.

The proposed shield will provide a simplified design of the lifting mechanism base, increase reliability and extend the service life by increasing the contact area of the bearing with thrust and by eliminating the shear force on the piston rod of the hydraulic cylinder lifting Foundation.

These benefits will provide the best flexibility lining at work on weak soils.

Claims

1. Section hydraulic powered roof supports-containing base, consisting of two parallel, resting the bottom of the plane on the ground skis with side rails and connected by a portal that supports the roof bar rack set between the ski portal gidrotartrat shifting exerted by the roll on a rod placed under the advancing hydraulic cylinder and connected with the side of the face with a conveyor mounted on the rod in a vertical position, the lifting mechanism of the ski base with gideros flat contact surface and moved along the height of the guides, moreover, the support is executed with vzaimootno surface in line contact with the side rails of the ski base.

2. Section under item 1, characterized in that the piston rod of the hydraulic cylinder of the lifting mechanism is made with a spherical end, fastened to the pole can be rotated in horizontal and vertical planes.

 

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