JP5174767B2 - Reclaimer - Google Patents

Description

  The present invention relates to a reclaimer for paying out a pile piled up with piles of loose articles such as coal and ore.

  Bulk materials such as iron ore carried into steelworks, coal carried into thermal power plants, ore loaded into cargo ships, etc. are stored in a yard (storage area) of a vast area such as a stacker. In general, they are piled up and stored by carrying-in means, and are then taken down and carried out by a reclaimer equipped with a boom having a bucket wheel on the tip side and capable of horizontal swiveling and raising / lowering operations.

  Such a reclaimer serving as a carry-out means has a carry-in function in addition to a carry-out function as described in JP-A-2002-347945 and JP-A-2001-58725 (stacker). FIG. 5 shows a schematic diagram of such a conventional reclaimer 1B.

  The reclaimer 1B includes a machine body 21 that is disposed so as to be able to reciprocate on a rail 50 laid adjacent to the carry-in conveyor and the carry-out conveyor in the yard, and a swivel base 22 that is provided on the machine body 21 so as to be capable of swiveling. The boom 23 is provided with a boom conveyor 24 extending from the swivel base 22 and capable of forward / reverse reversing operation, and a bucket 23 having a bucket wheel 25 that dislodges a pile while rotating to the front end side.

  By the way, the reclaimer 1B having such a configuration exhibits a payout function using the bucket wheel 25 and the boom conveyor 24. Since the length of the boom 23 is constant, the plan view of FIG. As shown in the figure, the work of paying out loose objects from a plurality of stacked piles stacked in parallel to the rail 50 is basically a fan-like view of the bucket wheel 25 on the front end side while turning the boom 23. This is performed by so-called turning-out.

  In this case, it is necessary to secure the entire length of the boom 23 to some extent in order to cope with the payout efficiency and a large loading area, but the bucket wheel 25 is laterally placed on the loading pile while turning the tip side of the boom 23 in the horizontal direction. Since the boom 23 is pressed and disassembled, the load applied to the boom 23 tends to be excessive when the entire length of the boom 23 is long, and as shown in the plan view of FIG. When paying out the attached mountain, the boom 23 interferes with the retaining wall and the loaded mountain on the near side, so that there is a problem that the working efficiency is lowered and the remaining ore portion is enlarged.

JP 2002-347945 A JP 2001-58725 A

  The present invention is intended to solve the above-described problems, and an object of the present invention is to realize a smooth and efficient payout corresponding to various loading mountain situations.

  Accordingly, the present invention provides a machine body capable of reciprocating on a predetermined rail, a turntable provided on the machine body so as to be horizontally turnable, a boom conveyor extending from the turntable and having a boom conveyor in the front side. In a reclaimer that has a bucket wheel that can be driven to rotate and performs swiveling and uplifting operations, and withdrawing the loading pile with the bucket wheel, the boom has a base side and a tip side. It is composed of at least two members of a part and has a predetermined expansion / contraction driving means, and the distal end side part inserted into the base end side part is telescopically projected / immersed by the expansion / contraction driving means, so that its full length Can be freely changed within a predetermined range.

  In this way, the reclaimer boom can be telescopically extended and retracted, so that compared to the conventional example in which the payout is performed only by the combination of the boom turning operation and the aircraft traveling operation, the combination of the operation for payout is Since it increases markedly, and in particular, it is advantageous for the withdrawal of the loading pile surrounded by the retaining wall, it is easy to realize smooth and efficient payout as it can cope with various situations.

  Further, in this reclaimer, the boom is provided with a balance adjusting mechanism in which weights are arranged so that the position of the boom can be changed in a predetermined range in the longitudinal direction. If the swing balance fluctuations are kept within a predetermined allowable range, smoothness of the turning operation is easily maintained even when the boom is extended and contracted.

  In this case, the weight of the balance adjusting mechanism is a balance carriage provided so as to be able to travel in the longitudinal direction at a predetermined portion of the base end side portion, and is moved by predetermined driving means to change the position. If it is characterized, it is easy to maintain the swivel balance of the boom with a simple configuration.

  Further, in the above-described reclaimer, the expansion and contraction drive means of the boom is a rack and pinion type by combining a motor-driven pinion provided at the base end side portion and a rack provided in the longitudinal direction of the side surface of the tip end side portion, or the base end side. If it is a chain rack type with a combination of a motor-driven sprocket and idle sprocket provided in the part and a chain erected in the longitudinal direction of the side surface of the tip side part, and the tip side part is slid, The boom can be expanded and contracted with a simple structure, and the fixing force at a desired length position is excellent.

  According to the present invention in which payout is performed using a telescopic boom, smooth and efficient payout can be realized in response to various situations of the mountain.

(A) is a front view which shows the state which extended the boom of the reclaimer which is embodiment in this invention, (B) is a front view which shows the state which retracted the boom of the reclaimer of (A). (A) is the elements on larger scale which show the detailed structure of the boom in the reclaimer of FIG. 1 (A), (B) is the elements on larger scale which show the detailed structure of the boom in the reclaimer of FIG. 1 (B). (A) is a schematic view when the boom expansion / contraction drive means in the reclaimer of FIG. 1 (A) is a rack and pinion type, and (B) is a boom expansion / contraction drive means in the reclaimer of FIG. 1 (B). It is a schematic diagram in case of a rack type. It is a top view which shows the condition at the time of the paying-out operation | work by the reclaimer of FIG. 1 (A). It is a front view which shows a prior art example. (A) And (B) is a top view which shows the condition at the time of the paying-out work by the prior art example of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the present invention, the reclaimer includes a so-called stacker reclaimer capable of exhibiting a carry-in function in addition to a normal carry-out function.

  FIGS. 1A and 1B show a front view for explaining the configuration of the reclaimer 1A of the present embodiment and the operation of the characteristic portion thereof. This reclaimer 1A is equipped with a loading / unloading function as a stacker in addition to a load / unload function for loading piles as a normal reclaimer, and is parallel to the loading and unloading conveyors in a yard such as a storage yard. It is arranged so that it can reciprocate on the rail 50 laid down.

  The reclaimer 1A includes a vehicle body 11 that travels with a predetermined power by placing wheels on the rail 50, a swivel base 12 that rotates horizontally on the vehicle body 11 with a predetermined power, and a predetermined extension at the tip of the swivel base 12 that extends from the swivel base 12. A boom 13 that has a bucket wheel 15 that rotates by power and performs a turning / raising / lowering operation is provided, and the above configuration is a well-known configuration that is also common to the conventional reclaimer 1B illustrated in FIG.

  The present invention is characterized in that the boom 13 is telescopic, and can be adjusted to a desired length within a predetermined range. That is, the boom 13 is inserted from the distal end side into the base end side portion 13a provided on the swivel base 12 so as to be able to be raised and lowered via the shaft member, and is inserted along the longitudinal direction of the boom 13 into the base end side portion 13a. It is comprised by two members of the front end side part 13b provided so that protrusion and immersion were possible.

  That is, the boom 13b is slid by a motor-driven telescopic drive means 130 provided on the base end side portion 13a to telescopically extend the boom 13 as shown in FIG. 1 (A). Between the state in which the distal end side portion 13b is immersed in the proximal end side portion 13a and the entire length is shortened to the state in which the distal end side portion 13b protrudes in the longitudinal direction and the entire length is maximized as shown in FIG. Thus, the boom 13 is extendable and can be fixed at a desired full length position.

  FIG. 2 (A) is a partial enlarged view for explaining the detailed configuration of the boom 13, and a base end side portion 13 a formed so as to constitute each side of the quadrangular column with a plurality of rod-shaped steel materials, A square columnar tip side portion 13b thinner than this is inserted from the tip side to the deepest position along the longitudinal direction of the boom 13, and the boom 13 is in the shortest overall length.

  A plurality of rollers 131 that contact the side surface of the distal end side portion 13b and guide its sliding direction are disposed on the proximal end side portion 13a, and below the space for inserting the distal end side portion 13b. A boom conveyor 13d is arranged to extend above the swivel base 12, and the plurality of rollers 131 guide the sliding of the tip side portion 13b to the most protruding position in FIG. The amount of expansion / contraction of the boom 13 which is about the same as the diameter of 15 is secured.

  Another boom conveyor 13c is housed inside the prism-shaped tip side portion 13b, and transports the piles of piles piled up by the bucket wheel 15 to the boom conveyor 13d on the base end side portion 13a. It is supposed to pass. Note that the boom conveyor 13c and the boom conveyor 13d described above are capable of forward / reverse inversion operation, and can perform a carry-in operation in addition to a payout operation. Further, the bucket wheel 15 provided at the tip of the tip side portion 13b is rotated by driving means such as a hydraulic motor (not shown).

  Further, on the upper surface side of the base end side portion 13a, a balance carriage 17 is provided from the base end of the base end side portion 13a as a weight constituting a balance adjusting mechanism for adjusting the fluctuation of the turning balance accompanying the expansion and contraction of the boom 13. It is provided so that it can run in the range up to the tip. The balance carriage 17 is clogged with a weight, and when the boom 13 retracts as shown in FIG. 2A, the boom 13 moves to the tip side in the opposite direction, and the boom 13 shown in FIG. When extending like this, it moves to the base end side in the opposite direction.

  In this way, the balance carriage 17 provided on the base end side portion 13a moves while synchronizing with the expansion and contraction operation of the boom 13, thereby making it possible to keep the swing balance fluctuation of the boom 13 within an allowable range. The smoothness of the turning motion can be secured. The balance carriage 17 may be moved by a drive system such as a wire system, a pin rack system, or a chain rack system.

  3 (A) and 3 (B) are schematic views showing examples of the system of the expansion / contraction driving means 130 for performing the protrusion / immersion operation of the distal end side portion 13b provided on the boom 13 and inserted into the proximal end side portion 13a. FIG. FIG. 3A shows the case of a rack and pinion type, in which the motor-driven pinion 130a provided on the base end side portion 13a is engaged with the rack 130b provided in the longitudinal direction of the side surface of the tip end side portion 13b while the tip end side is engaged. The part 13b is slid.

  On the other hand, FIG. 3B shows the case of the chain rack type, which is installed in the longitudinal direction of the side surface of the distal end side portion 13b on the motor driven sprocket 130c and the idle sprockets 130d and 130e provided on the proximal end side portion 13a. A chain 130f is hung in an Ω shape, and the tip side portion 13b is slid by the rotation of the sprocket 130. In addition, as a driving motor (not shown) for rotating the pinion 130a and the sprocket 130c, a type that exhibits a predetermined level of fixing force when stopped is used, so that the boom 13 is firmly fixed at a desired full length position. It becomes easy to be done.

  In the present embodiment, since the boom 13 can be expanded and contracted within a predetermined range and fixed with a desired total length with the simple configuration as described above, the bucket wheel 15 is reciprocated along the longitudinal direction of the boom 13. However, it became possible to break down Mount Mount. Therefore, as shown in the plan view of FIG. 4, in the reclaimer 1A of the present invention in which the boom 13 extends and retracts in the traveling / turning operation, it is difficult to perform the conventional payout operation, for example, when there are piles between narrow retaining walls. Even in such a situation, it can be withdrawn relatively easily, making it possible to pay out efficiently.

  As described above, according to the present invention, smooth and efficient payout can be realized in response to various situations of Mounted Mountain.

1A reclaimer, 11 machine body, 12 swivel base, 13 boom, 13a base end side, 13b tip end side, 13c, 13d boom conveyor, 15 bucket wheel, 17 balance trolley, 50 rail, 130 telescopic drive means, 131 roller, 130a Pinion, 130b rack, 130c sprocket, 130d, 130e idle sprocket, 130f chain

Claims (2)

An airframe that can reciprocate on a predetermined track, a swivel that is horizontally turnable on the airframe, and a bucket wheel that extends from the swivel, has a boom conveyor inside, and can be driven to rotate on the tip side. And a boom that swivels and raises and lowers the loading pile with the bucket wheel, and the boom includes at least two members of a base end side portion and a tip end side portion. in is configured to have a predetermined elastic drive means, by projecting and absorption in telescoping in said stretched or squeezed driving means inserted the distal end portion to the proximal side, a predetermined full-length range in reclaimer it was a freely changeable in the the boom predetermined drive different from the Shin contraction drive means a balanced carriage mounted for travel in the longitudinal direction at a predetermined portion of the base end side part A balance adjustment mechanism is provided in which weights that change the position by running in stages are provided, and the swing balance fluctuation in the boom is predetermined while moving the weight in the opposite direction to the boom expansion and contraction operation. A reclaimer that fits within the allowable range. The telescopic drive means is a rack-and-pinion type by a combination of a motor-driven pinion provided on the base end side and a rack provided in the longitudinal direction of the side of the tip side, or a motor drive provided on the base end side. 2. The reclaimer according to claim 1, wherein the reclaimer is a chain rack type of a combination of a sprocket, an idle sprocket, and a chain laid in the longitudinal direction of the side surface of the tip side portion, and the tip side portion is slid.

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