SU28192A1 - Mobile fixture for clearing faces - Google Patents

Description

Known to fix cleaning faces with the help of mobile racks-jack connected by rigid ties. In the proposed movable metal mount for lifting and lowering the lifting screws of the jacks, a rotating shaft runs along all the uprights, and to avoid gear breaks when the jacks head stops in the roof, a helical spring is inserted between the gear and the jack frame, allowing the gear to move longitudinally along another shaft .

According to a modification of the invention, an engine mounted on a platform in the middle of the lava is used to rotate the shaft and to move the jack struts on the sled following the advance of the bottom using ropes, envelopes attached to the stands of the rollers and winding onto two drums that receive rotation from the engine shaft.

In FIG. 1 shows the front of the jack stand; FIG. 2 is the same side; FIG. 3 is a schematic of the arrangement of the mechanized fastening relative to the bottom.

The proposed metal jack (FIGS. 1 and 2) consists of a steel screw /, rotating in the frame jfoncrat 2, with a tape thread

with an inclination angle of 4 ° for self-braking, so that the raised screw can be lowered again only if a torque is applied to it. The steel screw 1 receives rotation from the bevel gear 5, within which there is a key, which slides freely along the screw groove, which allows the screw relative to gear 3 to have only translational motion. Using the key, the rotational motion of gear 3 is transmitted to the screw 7, which, rotating with a rotational speed equal to the rotational speed of gear 3, moves progressively when there is a thread in the frame of the jack 2. Gear 3 receives rotational motion from the bevel gear 4, which is rigidly mounted on the shaft 5. On one shaft with gear 4 sits gear b, which receives rotational motion from gear 7 ,. sitting rigidly on the shaft 9. The latter is driven by the engine using a worm gear placed in the middle of the split shaft and connected to the last couplings. The engine / 5 (fig. 3) is mounted on a sled platform, mounted on two runners x two middle racks: a set (fig. 3).

Usually, the roof of the clearing slab is uneven, and therefore the height of the screws of the individual racks of the set should

i-etdTj, is different. The screws / all racks of one set are driven from one shaft with rigidly mounted concentric gears. To avoid breakage of the gear tooth, which sits on the shaft 5 at the moment when the rack leg comes in contact with the roof, a spring 7 / serves, mounted on the shaft 5 (Fig. 1). When there is a large pressure exceeding the spring resistance under compression, the gear wheel goes out of engagement with the top system 7, freely moving translationally on the shaft 5, and this is achieved by turning off each screw separately.

Moving the jack racks on the sled, following the ignition of the bottom, the help of the winch and the ropes M, the envelopes of the rollers attached to the racks J8 and the winding winch (Fig. 3), are carried out.

The winch consists of two drums mounted on a common shaft P and receiving rotation from the engine shaft through a worm gear.

When the load is removed from the rack, the latter is lowered, the spiral spring // opens, engages gear 6 and 7, and the screw / moves in the frame of the jack 2.

For the convenience of moving the kit, its individual racks are mounted on

skid x J2, made of iron fiber with curved ends. The runner with the column are fastened with the squares J3 (Fig. 3).

The subject matter of the invention.

Claims (2)

1. A movable metal fastener for cleaning faces, consisting of jack struts interconnected by rigid ties, characterized in that for raising and lowering the lifting screws 7 of jacks 2 a rotating shaft I passing along all the struts, in order to avoid gear breakdowns with jack heads In the rotor, a helical spring 77 is inserted between the gear wheel b and the frame of the jack 2, allowing longitudinal movement of the gear b on the shaft 5. 2. Types of fastening changes according to claim 1, characterized in that the engine mounted on the platform 9 is mounted on the platform in the middle of the lava and is also used to move the jack racks on the sled following the advance of the tailpins attached to the ropes 14, Racks J8 rollers and winding on two drums, sitting on the same shaft 9 and get their rotation from the engine shaft through a worm gear. Copyright Certificate of S. N. Shakhnovsky and A. N. Vaguzin No. 2819iJ Fig1 Zi Fig 3