SU759725A1 - Apparatus for supporting roof over combine - Google Patents

Description

The invention relates to the field of mounting unstable roof in the lavas of the work of the combine and lava mounting mechanized roof supports.

A device for maintaining the roof is known. Above the combine, consisting of an armor grid, uncoiled from a drum, when the combine is fed to the bottom. The drum is mounted on hydrosteers. To eliminate the effect of vibration on the roof, the armor mesh is supported by additional hydraulic wheels with rollers. Continuous pressing of the grid to the roof is carried out with the help of springs placed in glasses under the racks [1].

The disadvantage of this device is the lack of reliability of fastening of the roof.

The closest solution to the invention to the technical essence and the achieved result is a device for maintaining the roof above the combine, including the overlap, which is mounted on two supporting hydraulic racks installed on the combine, which includes a housing, a loading body and a hydraulic pump [2].

COMBINE

2

This device has a number of disadvantages that make it unsuitable for use in unstable roofing conditions: the four-sided shield contacts the roof by forming rollers. As a result, stress concentration occurs along the contact lines, which causes the destruction of the lower unstable roof layers; the roof between the rollers is not supported by anything, which leads to the spilling of the destroyed pieces of the roof under the lining and the formation of dumps; even in the presence of a small lead formed in front of the shield, the four-blade shield does not support the maintenance of the roof, since the rock from the dump begins to wake up under the lining through the gaps between the rollers. ⁵ further development of the fall occurs and the shield is “played up”; the roof is picked up by the shield only above the loader of the KBMBINE and is not supported above the combine itself, as a result of which the possibility of the formation of 20 dumps from the roof above the combine is not completely excluded; Installing the shield on two racks located in a plane perpendicular to the bottom line, makes the entire device unstable in the direction of movement of the combine3 759725

"'on. If there are protrusions in the roof or if the racks are significantly spread, the shield together with the racks is tilted in the direction opposite to the movement of the combine; the disadvantage is the need to have an autonomous compressor.

The aim of the invention is to improve the reliability of fastening of the roof throughout the area. di its outcrop above the combine.

This goal is achieved by the fact that

the overlap is made in the form of a rigid ribbed shield, the body has a longitudinal groove in which supporting hydraulic racks are mounted relative to the combine, and on the floor a supporting hydraulic post is additionally mounted, which

^{4 is} pivotally connected to the loading body and, through a tie, to the body, while the supporting hydraulic legs are connected to the hydraulic pump of the combine.

FIG. 1 shows the layout of the device in the downhole; in fig. 2 is a view along arrow A in FIG. one.

The overlapping device is made in the form of a continuous ribbed shield 1. Stiffeners are located parallel to the line of clearing face. The rigidity of the shield in the transverse direction is provided by angles or channels attached to the shield from its bottom side. The shield is located above the rear in the direction of travel. the combine and its excavation body that is not working in this cycle and as close as possible to the front working excavation body. To exclude the introduction of the shield into the roof when the combine moves, the front and rear ends of it are bent toward the soil of the formation. The shield prevents the destruction and spilling under the lining of the layers of unstable roof above it.

The shield is supported on hydraulic pillars 2 installed in groove 3 on combine 4 and 'on ski 5 attached to loading plowshare 6. To keep the ski in motion of the combine in the same position and not move closer to the slaughter or closer to the conveyor, it fixed with a coupler 7 attached to the combine. The entire device moves simultaneously with the movement of the combine.

In order to preserve the integrity of the unstable roof, it is necessary that the shield of the blocking device is permanent and with op. A certain force pressed against the roof.

_ This is ensured by connecting the piston cavities of the hydraulic stands supporting the shield to the hydraulic pump of the combine, by means of which the size of the extension of the struts and the force of pressing the shield to the roof is regulated.

At all times when the coal is harvested by a combine, the overlapping device in all cases must be located above the rear part of the combine and its rear body (drum) that does not work in the given cycle. When moving the combine in reverse

direction in the work will be the drum, which in its direct movement was turned off. To free the working body (drum) of the combine and secure the roof above the drum turned off in this cycle, it is necessary to move the shield of the device to support the roof along the combine, by a certain amount. This is achieved, firstly, by the fact that the groove 3, in which hydraulic legs are mounted on the combine, is made along the entire length of the combine and in such a way that it allows to move them together with the shield along the combine and fix it in the right place. Secondly, the hydraulic supports supporting the shield are connected to the hydraulic pump by means of flexible high-pressure hoses, which allows the shield to be moved with the hydraulic supports along the combine without re-installing the hydraulic system ensuring the supply of working fluid to the piston cavities of the hydraulic supports.

In order to prevent the pressure of the shield against the roof from decreasing when the combine moves, due to the increasing removable thickness of the reservoir, the hydraulic stands of the shield are continuously fed by the hydraulic pump of the combine. In the case when the removed reservoir capacity decreases along the length of ^2ί you, the working fluid of the hydraulic rails is released through the safety valves adjusted to the determined pressure inside the piston cavity of the shield post. This eliminates clamping Arrange ₃₀ CTBA when declining a removable seam thickness and stopping the combine for a long time.

The use of the device to maintain the roof in the area of operation of the combine will allow to eliminate the formation and development of dumps at this place. This, first of all, increases the safety of work, prevents injury to the fallen breed of the combine driver and his assistant, who are constantly at the combine, as well as ⁴⁰ other miners, who at the time of the formation of the fall may be near the combine.

Claims (1)

Claim A device for maintaining the roof above the combine, including the ceiling, which is mounted on two supporting hydraulic racks installed on the combine, 50 which contains a housing, a loading body and a hydraulic pump, characterized in that, in order to increase the reliability of the roof fastening on the entire area of its exposure to the combine, overlap completed. as rigid ribbed shield, the body has a longitudinal groove, in which supporting hydraulic legs are movable relative to the combine, and on the floor there is an additional 5 759725 but a supporting 'hygroscale' is mounted, which is pivotally connected to the loading body and, through a screed, to the hull, while the supporting hydraulics are connected to the hydraulic pump of the combine.