JP2001058725A - Stacker reclaimer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leaving any objects by widening the boom revolving range without separating a tripper when bulk goods are to be carried out. SOLUTION: A coupling frame 17 installed on a machine body 3 fitted with a boom 5 and a dolly frame 23 installed on a tripper 21 are positioned parallel to each other and are coupled together by a coupling means 26 in the bulk goods carry-in position and the retracted position for revolution of the boom so that the machine body 3 and tripper 21 can travel in a single piece. This enables enlargement of the boom revolving range and changing-over between the two positions by remote control, and also facilitates movement to the standby place after finishing the operation and preparation for the start of the next operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacker and a reclaimer used for stacking incoming bulk materials, and for removing and transporting the stacked bulk materials.

[0002]

2. Description of the Related Art A large amount of bulk materials such as iron ore and coal carried into a steel plant, coal carried into a thermal power plant, and a large amount of bulk material such as iron ore and coal loaded on a cargo ship are vast. They are usually piled up and stored in a yard.

FIG. 8 schematically shows one of the forms often used for pile storage of bulk materials. The bulk material unloaded from a bulk carrier 102 berthed on a quay 101 is transported by a conveyor 103. a plurality of feed to input conveyor C ₁ arranged in parallel. each other storage via, mountain M ₁ stacked along the input conveyor C ₁ by the _{stacker, M 2, M 3, M} 4
Is to make Then, roses matter is piled crushing ride transferred by reclaimer to carry-out conveyor C ₀ which is placed substantially adjacent to the respective input conveyor C _1, and sends the facility 104, such as a mixture. Although sometimes it is combined with the input conveyor C ₁ and discharge conveyor C ₀ as a common loading and unloading conveyor, herein loading, the case of dividing the unloading each dedicated conveyor.

In FIG. 8, a pair of loading conveyors C ₁ , a discharging conveyor C ₀ and a stacker reclaimer SR arranged to move along the loading conveyors C ₁ , M _2, M ₃ , M ₃ , M on both sides thereof. ₄ and disassemble them, so that the total number of stackers and reclaimers can be greatly reduced as compared with the case where the stackers and reclaimers are separately provided, and the number of loading conveyors C ₁ and discharging conveyors C ₀ can be reduced. Can be reduced.

The stacker / reclaimer SR has a body 105 reciprocating on a rail straddling a pair of a carry-in conveyor C ₁ and a carry-out conveyor C ₀ arranged close to each other, and supports the boom 106 so as to be able to descend and turn. A transport conveyor is installed over substantially the entire length of the vehicle, a scraper made of a bucket wheel is provided at the tip, and a tripper 107 extending in the traveling direction is provided.

[0006] The tripper 107 is for releasing the transported material in the middle of the belt conveyor, and is a widely known device that bends the belt into an S shape and discharges the transported material at a reversal point at a high place. . In stacker reclaimer SR, tripe 107 carries the conveyor C ₁ is bent in S shape, upwardly inverting point of the base end portion is a turning center of the boom 106 is positioned.

[0007] Then, transferred to the conveyor on the boom loose material sent aboard input conveyor C ₁ by trippers 107 reciprocally travels together with the machine body 105,
The pile M _{1 is} discharged by discharging from the tip of the boom 106.
... make the M _4. In addition, the pile M ₁ is scraped by the scraper.
By placing transferred to · · · M ₄ Karabara product discharge conveyor C ₀ through the conveyor to collect those sent to equipment 104. The piles M ₁ ... M ₄ are formed in a triangular or trapezoidal cross section having substantially the same width and the same height over the entire length.

[0008]

The tripper 107 extends in the reciprocating direction of the body 105, and
5, when the boom 106 having the center of elevation and the center of rotation is turned below the belt reversal point, which is the highest point, when the boom 106 contacts the tripper 107, Creates an area where turning is impossible.

FIG. 9 (A) is an explanatory view of a work for unloading bulk materials from the piles M ₁ and M ₂ by a stacker / reclaimer disposed therebetween. In quadrants I, II and III, IV
By turning and descending, the bulk objects in these quadrants are collected from the piles M ₁ and M ₂ , and then the aircraft 105 is stopped at the next predetermined position to collect the bulk materials. The work is repeated. At this time, in the quadrants II and III on both sides of the tripper 107, since the turning of the boom 106 is restricted by the tripper device 107, the bulk collecting area is smaller than that in the quadrants I and IV, and a considerably large amount of A ₁ , A ₂
Inevitably occur.

If the interval between the stop work positions of the body 105 is set to a small value in order to collect the remaining A ₁ and A ₂ or not to generate a large amount, the operation control system of the body 105 becomes troublesome. Since the boom 106 turns unnecessarily in a large blank area where no litter exists, there arises a problem that the unloading work efficiency is significantly reduced.

[0011] As a countermeasure, the tripping range is enlarged by making the tripper 107, which obstructs the turning of the boom 106 serving as a reclaimer at the time of unloading the bulky material, detachable from the body 105 or up and down so that the remaining A ₁ and directed to or not to generate a _2, or a minor and may occur has been proposed. FIG. 9B is a diagram for explaining a situation in which the tripper 107 is detached to carry out bulk materials, and shows that the bulk materials in the quadrants II and III can be carried out without being left behind.

[0012] However, the disconnection method cannot automatically disconnect and connect with the body by remote control, and is not suitable for a stacker / reclaimer in a vast storage space. On the other hand, the undulating method allows remote operation, but requires a hydraulic cylinder, a wire rope, a wrapping mechanism, a prime mover, and the like for rotating and sloping the inclined part and maintaining the inclined state at the time of carrying in bulk. However, the mechanism is complicated, and the burden on maintenance is not negligible.

[0013] The present invention has the above-mentioned problems that the tripper has a hindrance to turning of the boom when unloading bulk materials, and a means for eliminating the hindrance cannot be operated remotely or is complicated and is not suitable for practical use. In order to eliminate the problem, it is possible to evacuate the tripper to a position that does not hinder the turning of the boom at the time of unloading the bulk material without completely separating the tripper, and to return the tripper to the predetermined position when the bulk material is loaded. The purpose is to be able to do it.

[0014]

SUMMARY OF THE INVENTION The present invention relates to a stacker / reclaimer, more specifically, a rail that extends over a loading / unloading conveyor that is composed of one conveyor for both loading and unloading or two dedicated conveyors. A reciprocating airframe,
It has a boom that is equipped with a conveyor and a scraper and is supported on the fuselage so as to be able to move up and down, and a tripper that reciprocates integrally with the fuselage.The bulk material that is carried in is transported to the transport conveyor by the tripper. By transferring and discharging from the tip, piles of bulk material are created on the side, and bulk materials collected from piles are scraped by a scraper and transferred to a carry-in / carry-out conveyor via a conveyor and carried out. Means for solving the above-mentioned problems with respect to the machine working in the above-mentioned manner are as follows.

That is, the fuselage is provided with a connecting frame extending in the reciprocating running direction, and the tripper is provided with a bogie frame extending along the connecting frame, and the bogie frame is used to hold loose objects coming in. The connecting frame is connected to the connecting frame at two positions, a loading position for transferring to the conveyor and a retracting position further away from the transferring frame, and the connecting device is operated by the motor mounted on one of the bogie frame and the connecting frame. And an engaging portion provided on the other side and engaged and disengaged by the locking member.

The position of the connection between the tripper and the fuselage can be changed by moving the fuselage, and the connection and disconnection can be performed remotely by operating the locking member by the motor.

Further, in the above-mentioned apparatus, the tripper is provided with a power traveling device so that the tripper can be moved by itself between the carry-in position and the retracted position.

[0018] This makes it possible to switch between the carry-in position and the retracted position by moving one or both of the machine and the tripper, thereby improving workability. By running in synchronization with each other, the load on the coupling means is reduced.

Further, the base end of the connecting frame is rotatably connected to the body and the front end is connected to the bogie frame so as to be rotatable and rotatable.

[0020] Thus, the movement of the bogie frame between the carry-in position and the retracted position is smoothly performed, and
Even if the rail is distorted, the aircraft and tripper can be run without worrying about derailing.

Still further, in the above-mentioned apparatus, a position detecting means for detecting that the bogie frame has reached the carry-in position and the retreat position is provided.

Thus, not only can the position of the tripper with respect to the body be grasped at a distance, but also the traveling movement of the body and the tripper, the disengagement of the coupling means, the boom elevating and turning, the loading / unloading of bulk materials, etc. can be remotely controlled. Becomes

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
And rail 1 are laid substantially to the outer side of the arranged adjacent consists belt conveyor which is disposed carry-in conveyor C ₁ and discharge conveyor C ₂ to each other, the machine body 3 is input conveyor C ₁ carrying the wheel 2 in this rail 1, out It is adapted to round trip across the conveyor C _0.

A turntable 4 is mounted on the body 3, and a base end of a boom 5 is mounted on the turntable 4 by a support shaft 6 so as to be able to lower. The body 3 reciprocates by a power traveling device 7 including an electric motor, a reduction gear, and a transmission, the swivel 4 is rotated by a power rotation device 8 including an electric motor, a reduction gear, and a transmission, and the boom 5 is a power including a hydraulic cylinder. The elevating device 9 elevates.

The boom 5 is provided with a reciprocating transport conveyor 10 composed of a belt conveyor over substantially the entire length thereof, and a scraper 11 composed of a bucket wheel and a relay conveyor 12 composed of a belt conveyor at the end. is equipped, carrying roses was released into place from the front end of the conveyor 10, out roses comprises the relay conveyor 12 from the scraper 11, released into the discharge conveyor C ₀ from the chute 13 of the machine body 3 through the transfer conveyor 10 Is done.

A column 14 is mounted 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 to support the column 14.
Attached to.

The tripper 21 comprises an inclined frame 22 of the loose material discharge end was positioned higher is inverted positions to guide the carry-in conveyor C ₁ obliquely, and a horizontal carriage frame 23 is located below A chute 24 is provided at the top end of the inclined frame 22 at a position above the center of rotation of the boom 5 at the time of loading, and wheels 25 mounted on the rail 1 are provided at both front and rear ends of the bogie frame 23. I have.

The body 3 is provided with a connecting frame 17 extending in the reciprocating direction of the body so as to protrude.
Extend to the upper approach position of the connection frame 17.

The above-mentioned machine 3, the boom 5 equipped with the conveyor 10 and the scraper 11, the tripper 21 having the inclined frame 22 are the same as already known stacker reclaimers and are characterized by the present invention. The mechanism will be described below.

The main object of the present invention is to enlarge the swivel range of the boom 5 when carrying out bulk items and to eliminate the leftovers without completely separating the tripper 21 from the body 3 or raising and lowering the same. Therefore, the loading conveyor C ₁
The fuselage 3 and the tripper are separated into two positions: a carry-in position where the loose material discharge end is located above the center of rotation of the boom 5 and a retreat position where it is located at a certain distance away from the body 3 in the reciprocating traveling direction. In addition, the tripper 21 does not become an obstacle when carrying out the unloading by moving the body 3 so that the tripper 21 can be moved together to the standby place after the end of the work, and the next loading / unloading. It is also convenient for preparing to start work.

More specifically, referring mainly to FIG. 3 and subsequent figures, a motor having a motor with a speed reducer and a pin shaft-shaped locking member 27 extending in the vertical direction is provided at the end of the bogie frame 23 facing the body 3. The rotation of the locking member 27 and the prime mover 28 is converted into a vertical movement of the locking member 27 by a transmission mechanism 29 composed of a rack and pinion. On the other hand, locking portions 30 _a and 30 _b are provided at the base end and the distal end of the connecting frame 17, each having a vertically penetrating through hole into which the locking member 27 is loosely inserted.

The locking member 27 at the time of roses was carried holds a position to approximate trippers 21 is inserted into the engagement portion 30 _a of the base end side to the machine body 3, the locking member 27 at the time of roses was out the distal side are inserted into the engagement portion 30 _b and is intended to hold a position away tripe 21 from the fuselage 3, the locking member 2
7, the prime mover 28, transmission mechanism 29, the locking portion 30 _a, 30 _b are those constituting the coupling means 26 for coupling the connecting frame 17 in the second position of the loading position and the retracted position the dolly frame 23.

A hydraulic cylinder or an electric cylinder is used as the prime mover 28 and its piston rod is
Sometimes it is 7. The locking member 27 and the prime mover 28
May be provided on the connecting frame 17 to provide the locking portions 30 _a , 30 _b on the bogie 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 disengaged.

The provision of the coupling means 26 not only allows the tripper 21 to be retracted to a place where it does not hinder the turning of the boom 5, that is, for example, to the position shown in FIG. 9B. It can be moved integrally with the body 3 as it is.

The switching between the carry-in position and the retreat position is performed by operating the connecting means 26 and the bogie frame 23 and the connecting frame 17.
Preparative airframe 3 separated is moved by a distance corresponding to the spacing of the two locking portions 30 _a, 30 _b, and can be carried out by combining the connecting frame 17 and the carriage frame 23 again.

However, in order to improve the workability of the position switching, in the present embodiment, the prime mover and the reduction gear,
A power traveling device 32 composed of a transmission is mounted on the tripper 21 to drive the wheels 25 thereof.

With this, in addition to moving the body 3, the body 3 can be stopped and the tripper 21 can be moved, or both the body 3 and the tripper 21 can be moved. The position can be switched by selecting whether to move.

In addition, since the tripper 21 can be run synchronously when the body 3 is run, it travels without applying a force to pull or push the tripper 21 to the connecting means 26. There is an advantage that the load on the device can be reduced.

Next, the tripper 21 is provided with a prime mover 28 of the coupling means 26. In addition, when the tripper 21 is provided with a power traveling device 32 for performing self-movement, these are provided with power for power and control. Need to send electrical signals. The electric power and the electric signal are generally sent according to a command from an operator boarding an operator's cab provided on the swivel 4, and for this purpose, a power supply cable 34 is laid from the body 3 to the tripper device 21.

Since the distance between the machine body 3 and the tripper 21 changes between the carry-in position and the retreat position as described above, the power supply cable 34 also needs to follow this change. As a countermeasure, the power supply cable 34 may be wound on a reel and fed or wound up in response to a change in the interval so as to follow the feed.

However, in order to simplify the mechanism and enable following without power, the present embodiment employs a so-called curtain system which can be folded or expanded.
That is, the power supply cable 34 extending from the power supply and the control device.
Is attached to the connecting frame 17 and sequentially attached from its tip to a plurality of suspension members 35 and 36 mounted on the bogie frame 23 and connected to the prime mover 28 and the power traveling device 32. The suspension members 35 and 36 are made of H-shaped steel and are mounted in a suspended state on guide rails 33 arranged in parallel with the bogie frame 23, and the suspension members 35 farthest from the body 3 are fixed to the guide rails 33. The other suspension members 36 have rollers 37 engaged with the guide rails 33 and are freely movable.

At the carry-in position where the tripper 21 is approaching the body 3, the suspending member 35 is closest to the connecting frame 17, and the suspending member 36 between the suspending member 35 and the end of the connecting frame 17 is a bogie. Pushed by the suspending member 35 that moves integrally with the frame 23, the power supply cable 34 in this section is folded and crooked (see FIG. 1). When moving from the carry-in position to the retreat position, if the body 3 moves, the connecting frame 1
7 pulls the power supply cable 34, and when the tripper 21 moves, the suspension member 35 fixed to the guide rail 33 pulls the power supply cable 34, so that the distance between the suspension members 36 is sequentially increased to reach the retreat position. Then, the entire supply cable 34 in this section is expanded (see FIG. 2).

As described above, the suspension member 3 follows the change in the relative positional relationship between the bogie frame 32 and the connection frame 17.
5 and 36 are moved and the distance between them is changed, so that the suspended power supply cable 34 follows without power while being connected to the prime mover 28 and the power travel device 32, and the separation and connection work by the worker is performed. Complete remote operation is possible as unnecessary.

As described above, the connecting frame 17 is provided on the body 3 for connecting the tripper 21 at two positions, and the connecting frame 17 may be fixed to the body 3 and protruded in a cantilever manner. However, in practice, the rail 1 has distortion such as unevenness or bending, and the tripper 21 traveling on the rail 1 cannot avoid being accompanied by vibration or shaking with respect to the body 3. Therefore, if the rails 1 have large irregularities or bends, there is a concern that the machine body 3 and the tripper 21 which are connected to each other in a solidified state may come off.

As a countermeasure against this, it is effective to provide flexibility to the joint between the body 3 and the tripper 21 so that one vibration or shaking is not transmitted to the other. For this purpose, in the present embodiment, referring mainly to FIG. 5 and subsequent figures, the leading end of the connection frame 17 is connected to the hanging member 39 in which the roller 40 is engaged with the guide rail 33 by the pin 41. The base end was connected to the fuselage 3 by connecting means 42 comprising a trunnion-type rotating mechanism.

The hanging member 39 and the pin 41 are connected to the connecting frame 1.
7 constitutes a movable and rotatable connecting means 38 for connecting the tip of 7 to a guide rail 33 which is a mechanical component of the bogie frame 23, and the pin 41 absorbs vertical vibration and shaking. Connecting means 42 for connecting the base end of the connecting frame 17 to the body 3
A sleeve 44 is fitted on a support shaft 43 rotatably supported on the connecting frame 17, and a short shaft 45 orthogonal to the support shaft 43 is provided on both sides of a central portion of the sleeve 44 so as to rotate the body 3. The structure is freely supported. That is, this is a trunnion-type rotating mechanism in which the short axis 45 is known as a trunnion axis, which not only absorbs vibration and shaking in the vertical and horizontal directions during traveling, but also causes the body 3 and the tripper 21 to be displaced by the distortion of the rail 1. Absorbs the relative displacement of the wheel and eliminates the risk of derailing.

By connecting both ends of the connecting frame 17 to the tripper 21 and the body 3 by using such connecting means 38 and 42, a stable posture is maintained even at a high speed without worrying that the body 3 and the tripper 21 are disengaged. It became possible to run. In addition, since the bogie frame 32 and the connecting frame 17 are connected by the hanging members 39, these movements at the time of position switching are smooth.

Further, the bogie frames 2 which are arranged along with each other when switching between the carry-in position and the retreat position.
The two positions are detected by utilizing the change in the relative position of the connecting frame 17 with the connecting frame 17 in the longitudinal direction, so that the connection by the connecting means 26 is performed accurately.

The position detecting means 47 can use a proximity switch, a phototransistor, or the like. In this embodiment, the position detecting means 47 is constituted by a limit switch, and corresponds to an interval between the carry-in position and the retreat position as shown in FIG. The switch body 48, 49 is attached to the guide rail 33 at intervals and one operation cam 50 is attached to the tip of the connecting frame 17. One of the switch bodies 48 is operated at the carry-in position shown in FIG. When the switch body 49 comes into contact with the operation cam 50, the positioning stop and the coupling by the coupling means 26 are performed. In the retreat position shown in FIG. And coupling by the coupling means 26.

The position detecting means 47 makes it possible to grasp the accurate position of the tripper 21 with respect to the machine body 3 from a distance, and as a result, the traveling movement of the machine body 3 and the tripper 21, the operation of the connecting means 26, the raising and lowering of the boom 5 All operations such as turning, loading or unloading of bulk materials can be remotely controlled.

In order to surely perform the two-position change using the position detecting means 47, the trippers 21
It is preferable to provide a fixing device 52 consisting of a braking device 5 or a clamp for gripping the rail 1. This fixing device 5
2 is to perform the procedure of fixing the tripper 21 and then operating the connecting means 26 to separate the body 3 and move it to the next position when changing the two positions in a place where the rail 2 is inclined. As a result, it is possible to perform the same reliable position switching as in a horizontal place.

[0052]

As described above, according to the present invention, the tripper is always connected to the fuselage at one of the two positions to handle loose objects. In addition to the fact that the tripper is not separated, it is easy to move to a standby place after the work and to start the next carry-in / carry-out work. Further, in addition to this, the effects of improving the workability of the position switching, reducing the load on the connecting means between the machine body and the tripper, preventing the risk of derailing, and enabling remote control are provided.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a state when a bulk object is loaded according to an embodiment of the present invention.

FIG. 2 is a schematic partial side view showing a state when the bulk material is carried out in the embodiment shown in FIG. 1;

FIG. 3 is an enlarged partial view of FIG.

FIG. 4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is an enlarged sectional view taken along the line BB of FIG. 3;

FIG. 6 is an enlarged partial view of FIG. 3;

FIG. 7 is a cross-sectional view of FIG.

FIG. 8 illustrates one embodiment of a bulk storage facility.

FIGS. 9A and 9B are diagrams illustrating a bulk material unloading operation by a stacker / reclaimer.

[Explanation of symbols]

1 rail, 3 fuselage, 5 boom, 10 conveyor, 11 scraper, 17 connecting frame, 21 tripper, 22 inclined frame, 23 bogie frame, 2
6 coupling means, 27 locking member, 28 prime mover, 3
0 _a, 30 _b engaging portion, 32 a power traveling device, 34 power supply cable, 35, 36 hanging members, 38 and 42 connecting means, 47 position detecting unit,

Claims (6)

[Claims] 1. An airframe that reciprocates on a rail across a carry-in / out conveyor, a boom equipped with a transport conveyor and a scraper and supported by the airframe so as to be able to move up and down, and integrally with the airframe. In a stacker / reclaimer having a tripper that reciprocates, the airframe includes a connecting frame extending in a reciprocating traveling direction, and the tripper has a bogie frame extending along the connecting frame. The carriage frame is connected to the connection frame at two positions, a carry-in position for transferring the bulk materials that are carried in to the transport conveyor, and a retreat position farther away from the carry frame, and the connecting frame is capable of being disengaged. Is provided on one of the bogie frame and the connection frame, and is provided on the other of the prime mover and the other. Stacker reclaimer comprising the engaging portion, characterized in that it is. 2. The stacker / reclaimer according to claim 1, wherein the tripper includes a power traveling device, and is capable of moving by itself between the carry-in position and the retraction position. Stacker reclaimer. 3. The prime mover and / or the coupling means.
3. The stacker according to claim 1, wherein a power supply cable of the power traveling device is bridged over a plurality of suspension members movably mounted on the bogie frame such that the power supply cable is folded at the loading position and expanded at the retracted position. 4. Reclaimer. 4. The stacker according to claim 1 or 2,
In the reclaimer, the connection frame has a base end connected to the body by a rotatable connection means, and a front end connected to the bogie frame by a rotatable connection means. Stacker Reclaimer. 5. The stacker / reclaimer according to claim 4, wherein the means for connecting the connection frame to the body is a trunnion-type rotating mechanism. 6. The stacker reclaimer according to claim 1, further comprising a position detecting means for detecting the carry-in position and the retreat position of the bogie frame.