PL172482B1 - Lemniscate type self-advancing roof supports - Google Patents

Abstract

Mining casing with a low-profile blade having a cushion connected to a system with a low-profile casing consisting of a front and rear connector, a casing cover and at least two hydraulic supports supporting the canopies, to which they are fitted with an articulated casing cover, characterized by this that the ratio of the length (L1) of the front coupler (4) to the length (L2) of the rear coupler (5) is 1.0 - 1, 1, most preferably 1.0 9, the distance ratio (L3) of the joints (2) and 3) in the spine (1), in the axis to the length (L1) of the front link (4), is 0.25 - 0.35, most preferably 0.32, the distance ratio (L3) of the joints (2 and 3) in the spigot (1), in the ordinate of the distance (L5) of the pin joint (11) and the joint (9) in the coveal cover (6) is 0.28 - 0.32, most preferably 0.31, the distance ratio (L3) the heads (2 and 3) in the spine (1) in the axis of the distance (L6) of the coupler joints (9 and 10) in the casing (6) from the cuff is 1.0 0 - 1, 12, most preferably 1.0 9 , the distance ratio (L6) of the connecting joints (9 and 10) to the distance (L4) of the joints (2 and 3) in the axis of the cut off in the spine (1) is 0.60 - 0.75, most preferably 0.6 7, the ratio of the distance (L7) of the joints (7, 2) of the front link (4) and the support (8) in the cut axis to the distance (L4) of the joints (2 and 3) in the same axis is 0.45 - 0, 6- height (12) is 0, 28 - 0, 3 2, most preferably 0, 3 0 5, n at the m and t is the ratio of the canopy operation range to the minimum height of the casing is 1.45 ÷ 1.6 5, most preferably 1.5 8. PL PL PL

Description

The subject of the invention is a lemniscate mining support intended for supporting the roof of a hard coal mine.

The Polish patent specification No. 153,117 is known for a mining LemniseaS casing containing a floor connected articulated with a cave cover by means of front and rear connectors forming a lemniscate system. The rear couplings are longer than the front couplings and a canopy is attached to the caving cover supported by at least one support stand. The housing is constructed in such a way that the ratio of the length of the front link d _{to the} length of the rear link of the lemniscate system is 0.96 - 0.99, and the ratio of the distance between the joints of the links in the cave cover to the length of the front link is 0.282 - 0.347, while the ratio of the vertical distance of the joints in the floor plate to the horizontal distance of the same fasteners is 0.61 - 1.06.

It is also known from the Polish patent description No. 159 133 mining lemniscate housing with high resistance. The casing has a canopy supported by at least one hydraulic stand. Canopy is hinged to cover odzawałową, which in turn j _es tp combined with _a front and rear link lemniskatowym. These connectors are fixed _{in the} floor runner. An actuator is mounted between the cave cover and the roof canopy. The casing is characterized by an inclination in the upper part of the cave cover and the displacement of the canopy joint and cave cover in relation to the axis connecting the joints of the connectors in the cave cover. _P moreover, construction of housing has couplings in which the ratio of the length of the front to the rear of the connector is 1.21 1.25, the ratio of the distance of the pivot liaison cover odzawałowej the active length of sheath odzawałowej -¼ is 0.20 0.25, and the ratio of the vertical component the distance between the joints in the floor runner and the horizontal component is 0.40 u-0.43. P _ro p _orc I operating range of the housing to its minimum height is 0.80 - 1.00.

C lem _that the invention is selection of the geometric parameters of the housing to ensure _{that n} and large horizontal movement of the shield canopy of the housing and minimum internal forces in the elements of the angular ^ Temne the entire operating range of the housing.

172 482

This aim was achieved in the lemniscate mining support according to the invention, in which the ratio of the front link length to the rear link length is 1.0 * 1.1, most preferably 1.09, and the ratio of the distance between the joints in the floor floor in the ordinate axis and the length of the front link is 0 , 25 * 0.35, most preferably 0.32. Moreover, the ratio of the distance of joints in the floor, in the ordinate axis, to the distance of the pin joint and the joint in the cave cover is 0.28 * 0.32, most preferably 0.31, and the ratio of the distance of joints in the floor stand, in the ordinate axis, to the distance of connecting joints in the cave cover is 1.00 * 1.12, most preferably 1.09. In addition, the ratio of the distance of connecting joints to the distance of the joints in the abscissa axis in the floor floor is 0.60 - 0.75, most preferably 0.67, the ratio of the distance between the joints of the front link and the support in the abscissa axis to the distance of the joints in the same axis is 0.45 0 65, most preferably 0.54, the ratio of the distance between the joints of the front connector and the support in the abscissa axis to the distance of the joints in the canopy is 0.28 4- 0.32, most preferably 0.305, and the ratio of the canopy operation range to the minimum casing height is 1.45 + 1.65, most preferably 1.58.

The subject of the invention is shown in an exemplary embodiment in the drawing showing the housing in a side view.

The mining lemniscate support has a bottom 1 with articulated joints 2 and 3 in which are mounted: a front link 4 and a rear link 5 forming a lemniscate system with a cave cover 6 articulated to them. In front of the front link 4, two hydraulic supports 8 are mounted in the joint 7 in the floor 1. The cave cover 6 has 9 and 10 connection joints located in its cave part, while in its upper part a pin joint 11 is used to fasten the canopy 12 mounted on hydraulic supports 8 and fixed in the joint 13. Additionally, between the canopy 12 and the cave cover 6 there is an actuator 14. corrective.

172 482

Publishing Department of the UP RP. Circulation of 90 copies

Price PLN 2.00

Claims (1)

Patent claim Mining lemniscate support having a floor connected to a lemniscate system consisting of a front and rear connector, a cave cover and at least two hydraulic supports supporting the canopy, to which the cave cover is articulated, characterized in that the ratio of the length (L1) of the front connector (4) to the length (L2) of the rear link (5) is 1.0 u-1.1, most preferably 1.09, the ratio of the distances (L3) of the preeubes (2 and 3) in the floor (1), in the ordinate axis to the length (Ll) of the link (4) of the front is 0.25 u-0.35, most preferably 0.32, the ratio of the distance (L3) of the joints (2 and 3) in the floor floor (1) in the ordinate d _{to the} distance (L5) of the pin joint (11) and the pivot (9) in the casing (6) odzawałowej O _{n s} of 0.28 and 10.32, preferably 0.31, the ratio of the distance (L3) of the joints (2, 3) with a floor runner (1) in the axis of ordinate to the distance (L6 ) of the link joints (9 and 10) in the cave guard (6) is 1.00 - 1.12, most preferably 1.09, the distance ratio (L6) of the joints ( 9 110) of the connecting joints to the distance (L4) of the joints (2 and 3) in the axis cut off in the floor floor (1) is 0.60 -0.75, most preferably 0.67, the distance ratio (L7) of joints (7.2) of the connector ( 4) front and support (8) in the abscissa to the distance (L4) of joints (2 and 3) in the same axis is 0.45 + 0.65, most preferably 0.54, the ratio of the distance (L7) of joints (7 and 2) ) of the front connector (5) and the support (8) in the axis cut off to the distance (L8) of the joints (11.13) in the canopy (12) is 0.28 * 0.32, most preferably 0.305, while the ratio of the canopy work range to the minimum height of the housing is 1.45-1.65, most preferably 1.58.