JP4352360B2 - Stacker reclaimer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stacker / reclaimer used to pile up incoming bulk materials and to disassemble and carry out the bulk materials.
[0002]
[Prior art]
Large amounts of bulk materials such as iron ore and coal carried into steelworks, large quantities of bulk materials such as coal carried into thermal power plants, or iron ore and coal loaded onto cargo ships are a vast yard. It is usually stored in piles.
[0003]
FIG. 8 schematically shows one of the forms often used for bulk storage of bulk materials, where the bulk material unloaded from the bulk carrier 102 berthed on the quay 101 is placed via the transport conveyor 103. feeding a plurality of input conveyor C ₁ arranged in parallel. each other, but to make a mountain _{M 1, M 2, M 3} , M 4 stacked along the input conveyor C ₁ by the stacker. Then, the piled bulks are transferred to a carry-out conveyor C ₀ installed almost adjacent to each carry-in conveyor C ₁ by a reclaimer and sent to a facility 104 such as crushing and mixing. Although the carry-in conveyor C ₁ and the carry-out conveyor C ₀ may be used as a common carry-in / carry-out conveyor, this specification will describe a case where the carry-in conveyor C ₁ and the carry-out conveyor C ₀ are divided into dedicated carry-in and carry-out conveyors.
[0004]
In FIG. 8, a pile M ₁ , M ₂ and M ₃ , M ₄ is formed on both sides by a pair of carry-in conveyor C ₁ and carry-out conveyor C ₀ and a stacker / reclaimer SR arranged so as to move along this. In addition, the total number of stackers and reclaimers can be greatly reduced as compared to those in which the stacker and reclaimer are individually deployed, and the number of installation of the carry-in conveyor C ₁ and the carry-out conveyor C ₀ is also reduced. Can do.
[0005]
The stacker / reclaimer SR supports the boom 106 so that the boom 106 can be lifted and swung on a machine body 105 that reciprocates on a rail across a pair of carrying-in conveyors C ₁ and carrying-out conveyors C ₀ arranged close to each other. In addition, a conveyor is installed over the top, a scraper made of bucket foil is provided at the tip, and a tripper 107 extending in the running direction is further provided.
[0006]
The tripper 107 is a device for discharging a transported material in the middle of the belt conveyor, and is a widely known device that bends the belt in an S shape and discharges the transported material at a high inverted place. In the stacker / reclaimer SR, the tripper 107 bends the carry-in conveyor C ₁ in an S shape, and the reversal point is located above the base end that is the pivot center of the boom 106.
[0007]
Then, the bulk material sent on the carry-in conveyor C ₁ is transferred to the transfer conveyor on the boom by the tripper 107 that reciprocates integrally with the machine body 105, and discharged from the tip of the boom 106, whereby the pile M _1.・ ・ M ₄ is made. In addition, the scraps are collected from the piles M ₁ ... M ₄ and transferred to the transporting conveyor C ₀ through the transporting conveyor and sent to the facility 104. The piles M ₁ ... M ₄ are formed in a cross-sectional triangle or trapezoid having substantially the same width and height over the entire length.
[0008]
[Problems to be solved by the invention]
The tripper 107 extends in the reciprocating direction of the machine body 105 and has an inclined portion that becomes higher toward the machine body 105. When the boom 106 having slewing is made, an area in which no further turning is possible by making contact with the tripper 107 is formed.
[0009]
FIG. 9 (A) is an explanatory view of the operation of carrying out the bulk material from the stacks M ₁ and M ₂ by a stacker / reclaimer disposed between them, and the boom 105 is moved to the quadrant I by stopping the machine body 105 at a predetermined position. , II, III, and IV, the bulk material in these quadrants is collected from the piles M ₁ and M ₂ by turning and raising, and then the body 105 is moved to the next predetermined position and stopped. The process of sampling is repeated. At this time, quadrants II and III on both sides of the tripper 107 have a narrower collection area than the quadrants I and IV because the swing of the boom 106 is restricted by the tripper device 107, and a considerably large amount on both sides of the tripper 107. It is inevitable that leftovers A ₁ and A ₂ occur.
[0010]
In order to collect these leftovers A ₁ and A ₂ or to prevent them from being generated in large quantities, if the stop work position interval of the machine body 105 is set narrow, the operation control system of the machine body 105 becomes troublesome. As a result, the boom 106 turns unnecessarily in a wide blank area in which there is no problem, so that the carrying-out work efficiency is significantly reduced.
[0011]
As a countermeasure against this, the tripper 107 that can interfere with the turning of the boom 106 that acts as a reclaimer when carrying out the bulk material can be separated from the machine body 105 or can be raised and lowered to expand the turning range, and the remaining A ₁ , A ₂ It has been proposed that no or even a small amount be generated. FIG. 9B is a diagram for explaining a situation where the stripper 107 is detached and the bulk material is carried out, and shows that the bulk material in the quadrants II and III can be carried out without being left behind.
[0012]
However, the detaching method cannot be automatically disconnected from and connected to the airframe by remote control, and is not suitable for a stacker / reclaimer in a large storage area. On the other hand, although the hoisting method can be remotely operated, a hydraulic cylinder, a wire rope, its winding mechanism and a prime mover, etc. are required to turn the hoisting part up and down and keep it in a predetermined tilting state when carrying bulk material. However, the mechanism is complicated and the maintenance burden cannot be ignored.
[0013]
The present invention solves the above-described problems that the tripper has a hindrance to turning of the boom when carrying out a bulky object, and that the means for eliminating the hindrance is remote control impossible or complicated and unsuitable for practical use. It has been made for this purpose, and can be retracted to a position that does not hinder the turning of the boom when carrying out the bulk material by remote control without completely separating the tripper, and can be returned to the predetermined position when carrying in the bulk material. The purpose is to do.
[0014]
[Means for Solving the Problems]
The present invention relates to a stacker / reclaimer, specifically, a machine body that reciprocates on a rail straddling a conveyor for carrying-in and carrying-out consisting of one conveyor that combines loading and unloading or two dedicated conveyors, a conveyor, and Equipped with a scraper and a boom that is supported by the aircraft so that it can be raised and swung, and a tripper that reciprocates integrally with the aircraft, and the transferred bulk material is transferred to the conveyor by the tripper. A machine that works to create a pile of bulk material by releasing it from its tip and to carry it out by transferring the bulk material collected from the pile by a scraping machine to a loading / unloading conveyor via a conveyor. The means for solving the above-mentioned problems were as follows.
[0015]
That is, the stacker body has a connecting frame extending in the reciprocating direction, and the tripper has a cart frame extending along the connecting frame, and the cart frame is carried in. The coupling means is coupled by means of coupling means that can be engaged with and disengaged from the coupling frame at two positions of a carry-in position for transferring the bulk material to the conveyor and a retracted position that does not interfere with the turning of the boom. the carriage frame and the locking member is provided another on one and the locking member of the installed motor actuation in one of the connecting frame Ri is Do from the engaging portion to be disengaged, the carriage operating the coupling means After the frame and the connecting frame are separated, the machine body is moved by a distance corresponding to the interval between the two locking portions, and again the cart frame and the connecting frame. Ru switching between retracted position and the loading position by bonding a frame, and the things.
[0016]
The coupling position between the tripper and the aircraft can be changed by moving the aircraft, and the coupling and separation can be performed remotely by operating the locking member with a prime mover.
[0017]
Further, in the above-described apparatus, the tripper is provided with a power traveling device so that it can move by itself between the loading position and the retracted position.
[0018]
As a result, switching between the carry-in position and the retracted position can be performed by moving one or both of the aircraft and the tripper, which not only improves workability, but also synchronizes the tripper when the aircraft is traveling. To reduce the load on the coupling means.
[0019]
Further, the base end of the connection frame is connected to the airframe so as to be rotatable, and the tip is connected to the carriage frame so as to be movable and rotatable.
[0020]
As a result, the carriage frame can be smoothly moved between the carry-in position and the retracted position, and the body and the tripper can be run without worrying about wheel removal even if the rail is distorted.
[0021]
Furthermore, in the above-mentioned apparatus, a position detecting means for detecting that the carriage frame has reached the carry-in position and the retracted position is provided.
[0022]
As a result, the position of the tripper with respect to the airframe can be grasped at a distance, and the airframe and tripper can be moved and moved, the coupling means can be engaged and disengaged, the boom can be turned up and down, and the bulk can be carried in and out.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, which is schematically shown as a whole, outside the carry-in conveyor C ₁ and the carry-out conveyor C ₂ , which are belt conveyors arranged substantially adjacent to each other. A rail 1 is laid, and a machine body 3 with wheels 2 mounted on the rail 1 reciprocates across the carry-in conveyor C ₁ and the carry-out conveyor C ₀ .
[0024]
A swivel base 4 is mounted on the airframe 3, and a base end portion of the boom 5 is mounted on the swivel base 4 by a support shaft 6 so as to be lifted and lowered. The body 3 reciprocates by a power traveling device 7 including an electric motor, a speed reduction device, and a transmission device, the swivel 4 is rotated by a power turning device 8 including an electric motor, a speed reduction device, and a transmission device, and the boom 5 is a power including a hydraulic cylinder. It is lifted by the lifting device 9.
[0025]
The boom 5 is provided with a conveyor 10 which can be reciprocated and made up of a belt conveyor over almost the entire length thereof, and is equipped with a scraper 11 made up of a bucket wheel and a relay conveyor 12 made up of a belt conveyor at the tip. In addition, the imported bulk material is discharged from the front end of the transport conveyor 10 to the storage place, and the transported bulk material is discharged from the scraper 11 through the relay conveyor 12 and the transport conveyor 10 and from the chute 13 of the machine body 3 to the transport conveyor C ₀ .
[0026]
Further, a support column 14 is attached near the base end of the boom 5, and an arm member 16 having a balance weight 15 at the tip protrudes in the opposite direction of the boom 5 and is attached to the support column 14.
[0027]
The tripper 21 includes an inclined frame 22 that obliquely guides the carry-in conveyor C ₁ and has a rose discharge end that is a reversal point positioned at a high position, and a horizontal cart frame 23 positioned below the inclined frame 22. A chute 24 is provided at the top end of the frame 22 so as to be positioned above the turning center of the boom 5 at the time of carry-in, and wheels 25 mounted on the rail 1 are provided at both front and rear ends of the carriage frame 23.
[0028]
The airframe 3 is provided with a connecting frame 17 extending in the reciprocating traveling direction, and the carriage frame 23 extends to an upper approach position of the connecting frame 17.
[0029]
A tripper 21 having a boom 5 and an inclined frame 22 equipped with the aforementioned machine body 3, the conveyor 10 and the scraper 11 is the same as the stacker reclaimer already known, and the mechanism characterized by the present invention is as follows. Explained.
[0030]
The main object of the present invention is to expand the swivel range of the boom 5 when unloading the bulk material without completely leaving the tripper 21 from the airframe 3 or raising and lowering it, thereby eliminating any leftovers. For this purpose, there are a carry-in position in which the loose material discharge end of the carry-in conveyor C ₁ is located above the turning center of the boom 5 and a retreat position in which the machine body 3 is located at a certain distance away in the reciprocating direction of the body 3. When the airframe 3 and the tripper 21 are coupled in two positions, and the airframe 3 is moved and carried out, the tripper 21 does not get in the way. It is also convenient for preparations for moving and starting the next loading / unloading work.
[0031]
That is, mainly referring to FIG. 3 and subsequent figures, a pin shaft-like locking member 27 extending in the vertical direction is provided at the end facing the body 3 of the carriage frame 23 so as to be movable up and down, and a prime mover 28 comprising a motor with a speed reducer is installed. The rotation of the locking member 27 and the prime mover 28 is converted into the vertical movement of the locking member 27 by a transmission mechanism 29 comprising a rack and pinion. On the other hand, locking portions 30 _a and 30 _b made up and down through holes through which the locking member 27 is loosely inserted are provided at the base end portion and the distal end portion of the connecting frame 17.
[0032]
During loose material carrying the locking member 27 is inserted into the locking portion 30 _a of the base end side to hold the tripper 21 to the position is brought close to the machine body 3, the locking member 27 at the time of roses was out the distal end side of the locking It is inserted into the portion 30 _b and holds the tripper 21 at a position away from the machine body 3. The locking member 27, the prime mover 28, the transmission mechanism 29, and the locking portions 30 _a and 30 _b are positions where the carriage frame 23 is loaded. The coupling means 26 is configured to couple with the connecting frame 17 at two positions, i.e., a retracted position.
[0033]
A fluid pressure cylinder or an electric cylinder may be used as the prime mover 28, and the piston rod may be used as the locking member 27. In some cases, the locking member 27 and the prime mover 28 are mounted on the connecting frame 17 and the locking portions 30 _a and 30 _b are provided on the carriage frame 23. In either case, since the locking member 27 according to this embodiment is disengaged by linearly reciprocating the locking portion 30 _a, 30 _b, advantage operation is easy detachment as well as a simple However, the locking member 27 may be formed in a hook shape and rotated to be engaged and disengaged.
[0034]
By providing such a coupling means 26, the tripper 21 can be retracted to a place where it does not interfere with the turning of the boom 5, that is, for example, the position shown in FIG. And can be moved together.
[0035]
Switching between the carry-in position and the retracted position is performed by operating the coupling means 26 to separate the carriage frame 23 and the connecting frame 17 and then moving the machine body 3 by a distance corresponding to the interval between the two locking portions 30 _a and 30 _b. And again by connecting the carriage frame 23 and the connecting frame 17 together.
[0036]
However, in order to improve the workability of this position switching, in the present embodiment, a power traveling device 32 including a prime mover, a speed reducer, and a transmission device is mounted on the tripper 21 to drive the wheels 25 thereof.
[0037]
In this way, in addition to moving the airframe 3, the airframe 3 can be stopped and the tripper 21 can be moved, or both the airframe 3 and the tripper 21 can be moved, depending on the situation. The position can be switched by selecting whether to perform.
[0038]
In addition, since the tripper 21 can be run synchronously when the body 3 is run, the trip is performed without applying a force for pulling or pushing the tripper 21 to the coupling means 26, and accordingly, the load load on the coupling means 26. There is an advantage that can be reduced.
[0039]
Next, the tripper 21 includes a prime mover 28 of the coupling means 26. In addition, when the power traveling device 32 is provided for performing the self-moving, the tripper 21 receives power power and control electrical signals. I need to send it. These electric power and electric signals are generally sent in response to instructions from a worker who has boarded the cab installed on the swivel base 4, and for that purpose, the power supply cable 34 is bridged from the machine body 3 to the tripper device 21.
[0040]
Since the distance between the airframe 3 and the tripper 21 changes between the loading position and the retracted position as described above, the power supply cable 34 needs to follow this change. As a countermeasure, the power supply cable 34 can be wound on a reel, and can be made to follow by feeding or winding in accordance with a change in the interval.
[0041]
However, in order to simplify the mechanism and enable follow-up without power, the present embodiment employs a so-called curtain system that is folded or expanded. That is, the power supply cable 34 extending from the power source and the control device is attached to the connecting frame 17 and is sequentially attached to a plurality of suspension members 35 and 36 mounted on the carriage frame 23 from the tip thereof and connected to the prime mover 28 and the power traveling device 32. It is a thing. The suspension members 35 and 36 are made of H-shaped steel and are mounted in a suspended state on a guide rail 33 arranged parallel to the carriage frame 23, and the suspension member 35 farthest from the body 3 is fixed to the guide rail 33. The other suspension members 36 have rollers 37 engaged with the guide rails 33 and are freely movable.
[0042]
At the carry-in position where the tripper 21 is close to the body 3, the suspension member 35 is closest to the connection frame 17, and the suspension member 36 between the suspension member 35 and the tip of the connection frame 17 is the carriage frame 23. It is pushed by the suspension member 35 that moves integrally, and is in an almost adjacent state, and the power supply cable 34 in this section is folded and bent in a straight line (see FIG. 1). When the body 3 moves from the carry-in position to the retracted position, the connecting frame 17 pulls the power supply cable 34 when the body 3 moves, and the suspension member 35 fixed to the guide rail 33 moves the power supply cable 34 when the tripper 21 moves. When the distance between the suspension members 36 is sequentially increased to reach the retracted position, the entire supply cable 34 in this section is expanded (see FIG. 2).
[0043]
In this manner, the suspension members 35 and 36 move following the change in the relative positional relationship between the carriage frame 32 and the connection frame 17 and the distance between them is changed, so that the suspended power supply cable 34 is moved to the prime mover 28 and the power traveling. It will follow without power while being connected to the device 32, and separation and connection work by an operator is unnecessary, and complete remote operation is possible.
[0044]
As described above, the connecting frame 17 is provided on the machine body 3 in order to connect the tripper 21 at two positions, and can be fixed to the machine body 3 and protruded in a cantilever manner. However, in reality, the rail 1 has distortions such as unevenness and bending, and the tripper 21 traveling on the rail 1 is unavoidably accompanied by vibrations and shaking with respect to the airframe 3. Therefore, if the unevenness and the bending of the rail 1 are large, there is a concern that the airframe 3 and the tripper 21 that are coupled together in a solid state are detached.
[0045]
As a countermeasure, it is effective to provide flexibility in the joint portion between the airframe 3 and the tripper 21 so that one vibration or shaking is not transmitted to the other. For this purpose, in the present embodiment, mainly referring to FIG. 5 and subsequent figures, the tip of the connecting frame 17 is connected by a pin 41 to a lifting tool 39 in which a roller 40 is engaged with the guide rail 33, and the connecting frame 17 The base end was connected to the airframe 3 by connecting means 42 comprising a trunnion type rotating mechanism.
[0046]
The lifting tool 39 and the pin 41 constitute a movable and rotatable connecting means 38 for connecting the tip of the connecting frame 17 to the guide rail 33 which is a mechanical part of the carriage frame 23, and the pin 41 vibrates or shakes in the vertical direction. To absorb. The connecting means 42 for connecting the base end of the connecting frame 17 to the airframe 3 is configured such that a sleeve 44 is fitted on a support shaft 43 that is rotatably supported by the connection frame 17 and orthogonal to the support shaft 43 on both sides of the central portion of the sleeve 44. This is a structure in which a short shaft 45 is projected and supported on the machine body 3 in a freely rotating manner. That is, this is a trunnion type rotation mechanism in which the short shaft 45 is known as a trunnion shaft, and not only absorbs vibrations and vibrations in the vertical and horizontal directions during traveling, but also the airframe 3 and the tripper 21 due to the distortion of the rail 1 Absorbs the relative position shift of the wheel and eliminates the worry of wheel removal.
[0047]
By connecting both ends of the connecting frame 17 to the tripper 21 and the airframe 3 using such connecting means 38, 42, the vehicle 3 travels while maintaining a stable posture even at high speed without worrying that the airframe 3 and the tripper 21 are removed. It became possible to make it. Further, since the bogie frame 32 and the connecting frame 17 are coupled by the lifting tool 39, these movements at the time of position switching become smooth.
[0048]
Further, two positions are detected by utilizing the fact that the relative positions in the longitudinal direction of the carriage frame 23 and the connecting frame 17 arranged in a state along each other at the time of switching between the carry-in position and the retracted position are changed, and the coupling means The connection by 26 was made correctly.
[0049]
This position detection means 47 can use a proximity switch, a phototransistor, etc., but in this embodiment, it is constituted by a limit switch and guides at an interval corresponding to the interval between the carry-in position and the retracted position as shown in FIG. The switch body 48, 49 attached to the rail 33 and a single operation cam 50 attached to the distal end of the connecting frame 17, one switch body 48 contacts the operation cam 50 at the loading position shown in FIG. The positioning stop and the coupling means 26 are coupled to each other, and in the retracted position shown in FIG. 2, the other switch body 49 is operated in contact with the operation cam 50 to activate the positioning stop and the coupling means. 26 is performed.
[0050]
The position detecting means 47 makes it possible to grasp the exact position of the tripper 21 with respect to the machine body 3 at a distance, and as a result, the movement of the machine body 3 and the tripper 21, the operation of the coupling means 26, the boom 5 swinging up and down, All operations such as loading and unloading of objects can be remotely controlled.
[0051]
In order to surely perform the two-position change using the position detecting means 47, the tripper 21 is preferably provided with a fixing device 52 comprising a braking device for the wheel 25 or a clamp for gripping the rail 1. The fixing device 52 is a procedure for fixing the tripper 21 and then operating the coupling means 26 to separate the machine body 3 and move it to the next position when the two positions are changed at the place where the rail 2 is inclined. By stepping on, it is possible to perform reliable position switching similar to a horizontal place.
[0052]
【The invention's effect】
As described above, according to the present invention, since the handle is handled in a state where the tripper is always connected to the airframe at any one of the two positions, the swivel range of the boom can be expanded and transported without being left behind. In addition to being able to move to a waiting place after the end of work and preparing for the start of the next loading / unloading work, there is the convenience that the tripper is not separated so that it is easy. Further, in addition to this, there are the effects of improving the workability of position switching, reducing the load burden on the connecting means between the airframe and the tripper, preventing the risk of wheel removal, and enabling remote operation.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing a state when a loose article is carried in according to an embodiment of the present invention.
FIG. 2 is a schematic side view of a side view showing a state when the loose article is carried out in the form of FIG. 1;
FIG. 3 is an enlarged partial view of FIG. 1 partially cut away.
4 is a cross-sectional view taken along line AA in FIG.
5 is an enlarged cross-sectional view taken along line BB in FIG.
6 is an enlarged partial view of FIG. 3;
7 is a cross-sectional view of FIG.
FIG. 8 is a diagram illustrating one embodiment of a bulk storage facility.
FIGS. 9A and 9B are diagrams illustrating a bulk material carrying out operation by a stacker / reclaimer. FIGS.
[Explanation of symbols]
1 rail, 3 body, 5 boom, 10 transport conveyor, 11 scraper, 17 connecting frame, 21 tripper, 22 inclined frame, 23 bogie frame, 26 coupling means, 27 locking member, 28 prime mover, 30 _a , 30 _b Locking portion, 32 power traveling device, 34 feeding cable, 35, 36 suspension member, 38, 42 connecting means, 47 position detecting means,

Claims (6)

A machine body that reciprocates on a rail across a carry-in / carry-out conveyor, a boom that is equipped with a transfer conveyor and a scraper and is supported so as to be able to be lifted and swung on the machine body, and a tripper that reciprocates integrally with the machine body In the stacker / reclaimer, the airframe has a connecting frame extending in the reciprocating direction, and the tripper has a carriage frame extending along the connecting frame. The frame is connected to the connecting frame at two positions: a loading position for transferring the bulk material that has been carried to the conveyor, and a retracting position where the tripper that is further away does not interfere with the turning of the boom. The coupling means is connected to a motor-operated locking member installed on one of the carriage frame and the coupling frame and another one. With the locking member provided Ri Do from the engaging portion and which is disengaged, the interval of operating the coupling means and the bogie frame and the connecting frame and two locking portion of the machine body from separating switching Ru, stacker reclaimer, characterized in that the retracted position and the loading position by a distance corresponding to move, coupling the bogie frame and said connecting frame again.   2. The stacker reclaimer according to claim 1, wherein the tripper includes a power traveling device and is movable between the loading position and the retracted position.   The power supply cable of the motor of the coupling means or (and) the power traveling device is stretched over a plurality of suspension members which are freely mounted on the carriage frame so as to be folded at the loading position and expanded at the retracted position. Item 3. A stacker reclaimer according to item 1 or 2.   3. The stacker / reclaimer according to claim 1 or 2, wherein a base end of the connection frame is connected to the airframe by a connection means capable of rotating, and a connection means capable of moving and rotating the tip of the connection frame to the cart frame. Stacker reclaimer characterized by being connected by   The stacker / reclaimer according to claim 4, wherein the connecting means of the connecting frame to the airframe is a trunnion type rotating mechanism.   5. The stacker reclaimer according to claim 1, further comprising position detecting means for detecting the carry-in position and the retracted position of the carriage frame.

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