Tipping skip

Abstract

The invention relates to the mining industry, in particular, to lifting inclined vertical skip-type installations for transporting ore from an open-pit mine. A tipping skip containing a skip box mounted on wheels that move along a pair of rail tracks, the wheels are installed in pairs and coaxially on the skip box and each rotates freely on a fixed axis, the box with the help of wheels has the ability to move upward under the action traction ropes of the winch, in addition there are only two pairs of wheels, the ropes are attached to the last, pair of fixed axles with the possibility of free rotation around them, at the end of the rail track there is a rotating section with a counterweight, in front of this section on the rail track there is a rigid stop for the axes of the last pair of wheels, these axles protrude beyond the dimensions of the front wheel axles. The design of the proposed tipping skip is simpler than the prototype; it uses two pairs of wheels versus three pairs of the prototype. This greatly simplifies the design and reduces its cost. The use of the proposed design of a tipping skip increases the productivity of the ore unloading process. In this scheme, when the skip box moves upward, upon reaching the unloading position, the skip box, under the influence of its own weight, very quickly tips over on the rotating section.

Description

[0001] TIPPING SKIP

[0002] The invention relates to the mining industry, in particular, to lifting inclined vertical skip-type installations for transporting ore from an open-pit mine.

[0003] A skip with a hinged rear wall and a sector shutter is known. The sector gate is equipped with rotating rollers on both sides to open it, and is held closed by its own weight. To open the sector, special paths are installed in the unloading unit along which the skip rollers begin to move. The profile of the special path is made so that the rollers that move along it open the sector gate and release the skip from the load of ore (Pravitsky N.K. Mine lifting installations. M., State Scienti fic and Technical Publishing House of Literature on Mining, 1963, p. 50, fig.33). The disadvantage of this design is the low speed of ore unloading, since the area of the folding wall is small, it opens gradually, which makes it difficult to quickly unload ore. The wall opening mechanism - a sector gate -- is subjected to shock loads when ore enters the skip, which can lead to its breakage.

[0004] A tipping skip is known, taken by the authors as a prototype, containing a skip box mounted on wheels that move along a pair of rail tracks, the wheels are installed in pairs and coaxially on the skip box and each rotates freely on a fixed axis, the box with the help of wheels has the ability to move upward under the action winch traction ropes, four wheels are used for movement along the main path and two for movement along the additional path. The unloading unit has an additional section of tracks with an increased distance between the rails; the rear pair of skip wheels can move along it. The main rail track at the unloading site is curved downwards. The winch rope is attached to the back of the skip box (Pravitsky N.K. Mine lifting installations. - M., State Scientific and Technical Publishing House of Mining Literature, 1963, p. 50, fig. 32). The disadvantage of this skip design is the complexity of the design, it is necessary to have at least 3 pairs of wheels, the low productivity (speed) of dumping cargo from the skip box, the dumping occurs while the box is moving under the influence of the winch rope and the angle of inclination of the box is limited, it can be approximately no more than 600 from the axis of the main path, at a larger angle of inclination, the box will not return to its original position under its own weight. The slow movement and slight angle of inclination of the skip box slows down the flow of ore from the box at the unloading position.

[0005] The objective of the invention is to reduce the complexity of the skip design and increase the productivity ( speed) of the process of unloading ore from the sk ip.

[0006] The technical result is achieved by the fact that a tipping skip containing a skip box mounted on wheels that move along a pair of rail tracks, the wheels are installed in pairs and coaxially on the skip box and each rotates freely on a fixed axis, the box with the help of wheels has the ability to move upward under the action traction ropes of the winch, in addition there are only two pairs of wheels, the ropes are attached to the last pair of fixed axles with the possibility of free rotation around them, at the end of the rail track there is a rotating section with a counterweight, in front of this section on the rail track there is a rigid stop for the axes of the last pair of wheels, these axles protrude beyond the dimensions of the front wheel axles. In fig. 1 shows a scheme of a tipping sk ip; Fig. 2 section A- A, Fig. 3 scheme of the operation of a tippi ng skip.

[0007] The tipping skip consists of a box 1 (Fig. 1), at the bottom of which there are two pairs of wheels 2, which move along a paired rail track 3, under the action of two ropes 4, driven by two winches 5. At the end of the rail track 3 there is a rotating section 6 in the form a double-arm lever rotating around an axis 7. At one end of the rotating section 6 there is a continuation of the paired rail track 8, at the other end there is a counterweight 9. The rear wheels 2 of the box 1 are mounted with the possibility of free rotation on the axis 10 (Fig. 2), rigidly fixed to the skip box 1. The front wheels 2 of the box 1 are attached with the possibility of free rotation on the axle 1 I , rigidly fixed to the skip box 1. The axles 10 are longer than the axles 1 I , ropes 4 are attached to their ends and these ends rest against stops 12, which are located at the end of the rail track in front of rotating section 6.

[0008] A tipping skip works as follows. Skip box 1 is at the bottom of track 3 in the ore loading position. After the winches 5 are fully loaded, they pull the skip box 1 with wheels 2 from the top along the path 3 to the unloading position with ropes 4 (Fig. 3A). The skip box 1 reaches the top position of the track 3, the axles 1.0 of the rear wheels 2 rest against the limiter 12, which is located on the track 3, the front wheels 2 drive into the track 8 of the rotating section 6 (Fig. 3B). Under the influence of the weight of the ore and skip box 1, the rotating section 6 quickly rotates, approximately 900, around the axis 7 downward along with the skip box 1 . The ore pours down (Fig. 3C). Skip box 1 is freed from ore, its weight is significantly reduced. The rotating section 6 turns in the opposite direction under the influence of its counterweight 9 (Fig. 3D). The empty skip box 1 moves along path 3 downwards.

[0009] Winches 5 through ropes 4 regulate the speed of its downward movement (Fig. 3E).

[0010] The design of the proposed tipping skip is simpler than the prototype; it uses two pairs of wheels versus three pairs of the prototype. This greatly simplifies the design and reduces its cost. The use of the proposed design of a tipping skip increases the productivity of the ore unloading process. In this scheme, when the skip box moves upward, upon reaching the unloading position, the skip box, under the influence of its own weight, very quickly tips over on the rotating section. In the prototype, tipping occurs slowly as the skip box moves along the path. Also in the prototype scheme, the tipping angle of the skip box is limited, approximately no more than 600; if this tipping angle is exceeded, the skip box will not return to its original position, since its return is ensured by the position of its center of gravity on the rail track and the ratio of torques, one of which overturns the box , and the second one tries to return it to the unloading position. In the proposed tipping skip design, the tipping angle can reach 900 or more, which will ensure rapid unloading of ore. The return of the box to its original position is ensured by the action of a counterweight on the rotating section.

Claims

Patent claimA tipping skip containing a skip box mounted on wheels that move along a pair of rail tracks, the wheels are installed in pairs and coaxially on the skip box and each rotates freely on a fixed axis, the box with the help of wheels has the ability to move upward under the action traction ropes of the winch, in addition there are only two pairs of wheels, the ropes are attached to the last pair of fixed axles with the possibility of free rotation around them, at the end of the rail track there is a rotating section with a counterweight, in front of this section on the rail track there is a rigid stop for the axes of the last pair of wheels, these axles protrude beyond the dimensions of the front wheel axles.

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