JP2001315948A - Dropped load recovery device of inclined belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dropped load recovery device of an inclined belt conveyor capable of simplifying an entire structure in comparison with each conventional device, capable of automatically recovering a dropped load when operating a conveyor belt, capable of reducing a weight increase rate even if a recovery distance for the dropped load is extended, and most suitable when the belt conveyor has a steep inclination. SOLUTION: A carriage 60 is disposed so that it can travel on a track 61 provided along the upper part of a drop preventing plate 9 below the return side belt of a lower conveyor belt 21, the base end of a scrapper body 57 is journaled to the bottom surface of the carriage 60 so that it can perpendicularly rotate with a lateral rotation shaft as a center, a scraper 58 is mounted to the tip of the scraper body 57, a cam mechanism 19 to rotate the tip side of the device body 57 upward by being engaged with a cam follower 69 integrally and rotatably attached to the rotation shaft 59 of the device body 57 when the scraper 58 moves upward is provided in the vicinity of a supply part for bulk material, and an locking pawl 73 is provided so that it can be locked to a locking part 57b provided in the device body 57 when the tip side of the device body 57 rotates upward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor belt provided with a fall prevention plate below a return side belt.
This relates to an inclined belt conveyor that is provided with a discharge section at a higher position than the supply section and conveys bulk materials (including powdery and granular loads) such as coal and ore. The present invention relates to an unloading and collecting apparatus having a scraper for scraping an object.

[0002]

2. Description of the Related Art An example of this type of unloading recovery apparatus is disclosed in Japanese Patent Application Laid-Open Nos. Hei 7-237730 and Hei 7-237773. These devices are provided on a main body that runs along the side of the belt conveyor, and suction means for sucking the fallen coal on the fall prevention plate and storing it in the storage tank, and moving the suction nozzle of the suction means along the fall prevention plate. And moving means for moving.

[0003] Also, there is an apparatus described in Japanese Patent Application Laid-Open No. 7-206139. This apparatus is provided below a belt conveyor that conveys pulverized coal and faces a return side, and has a pair of surface portions inclined in the width direction. It is provided with a charcoal receiving plate and a screw conveyor provided at the lower end of the inclined surface portion of the charcoal receiving plate for carrying out the dropped coal collected in the longitudinal direction.

[0004] In addition, there is an apparatus described in Japanese Utility Model Application Laid-Open No. 6-23928. In this apparatus, a vertical plate-shaped scraper is reciprocally movable along a receiving surface of a receiving plate, and powders provided at both ends are provided. It has a structure in which each of the granules is collected by a scraper in the granule collecting section.

[0005]

However, the conventional apparatus described in the above publication has problems to be solved in the following points.

JP-A-7-237730 and JP-A-7-237730
In the device described in Japanese Patent No. 237731, since the moving means of the main body is provided on one side of the belt conveyor over substantially the entire length in the running direction, walking of the inspection passage is hindered. Further, as the collection distance increases, the transport weight increases. Furthermore, since the suction nozzle collects the lost load while moving on the fall prevention plate in the width direction, it cannot be completely recovered.

In the apparatus described in Japanese Patent Application Laid-Open No. 7-206139, the unloading is collected by a screw conveyor arranged in the traveling direction below the return-side belt conveyor, so that the transport is performed as the collecting distance increases. Weight increases. Also, in relation to the installation location,
Maintenance of screw conveyor screws such as inspection and replacement is difficult. Further, since the load is dropped and collected by the inclined surface portion, the collection of the load near the both ears of the conveyor belt is incomplete.

In the apparatus described in Japanese Utility Model Application Laid-Open No. 6-23928, it is necessary to provide unloading collecting sections on both sides of a supply section and a discharge section of the bulk material, and the entire structure is complicated. In addition, this device moves the scraper horizontally by pulling the scraper with a tow rope to collect loose objects.However, when the discharge section is located at a considerably higher position than the supply section such as a steeply inclined belt conveyor, Is that the towing line on the side of the scraper when moving upward is always in a tension state, so that the towing line on the lower side is unlikely to be in a tension state when the scraper moves downward (down), and loose objects cannot be reliably collected. . Further, as the collection distance increases, the transport weight increases.

The present invention has been made in view of the above points, and its overall structure can be simplified as compared with the conventional devices, and the operation of collecting the unloading during the operation of the conveyor belt can be automated. Even if the distance increases, the rate of weight increase is small, especially when the inclination of the belt conveyor is steep.
It is an object of the present invention to provide an unloading recovery device for an inclined belt conveyor.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, an apparatus for recovering unloading of an inclined belt conveyor according to the present invention is provided below a return side belt of a conveyor belt for transporting bulk materials along a belt running direction. Equipped with a fall prevention plate, the discharge unit (head side) is provided at a higher position than the supply unit (tail side), and the inclined belt conveyor that transports bulk materials such as coal and ore falls on the fall prevention plate. A scraper for scraping loose materials (including fine particles such as pulverized coal) is provided so as to be able to reciprocate, and is configured to exhibit a scraping function only when the scraper moves downward.

According to the inclined belt conveyor having the above structure, the scraper reciprocates on the fall prevention plate when the bulk material is conveyed, and the bulk material such as coal powder is moved on the fall prevention plate during conveyance. When the spill falls, the scraps on the fall prevention plate are raked up only when the scraper moves downward. For this reason, even if the amount of loose material scraped up by the scraper increases as the scraper descends, the weight of the loose material acts downward, so the resistance acting on the scraper is small, and the scraper is driven by a relatively small driving force. Can be moved. In addition, since the collection point of the bulk material is only one at the tail side, the entire structure of the unloading device is simplified.

According to a second aspect of the present invention, a truck is movably disposed on a track provided below the return-side belt of the conveyor belt and above the fall prevention plate,
Along with a base end of the scraper device main body supported on the bottom surface of the cart so as to be rotatable in a vertical direction about a horizontal rotation axis,
A cam mechanism that mounts the scraper on the tip of the scraper device main body, engages with a cam follower rotatably attached to the rotation shaft of the scraper device main body, and rotates the tip side of the scraper device body upward. Provided in the vicinity of a supply portion of the conveyor belt for transport, and provided on the carriage with a locking claw that can be locked to a locking portion provided on the scraper device main body when the scraper device main body rotates upward.
It is preferable that an unlocking mechanism that abuts on the vicinity of the upper end of the locking claw to release the locked state between the locking claw and the locking portion is provided near the discharge section of the conveyor belt.

According to the second aspect of the present invention, the scraper is moved by the truck traveling on the track, and the scraper is operated only when descending. The scraper can be moved smoothly with a relatively small driving force. In addition, since the scraper is moved upward by the bogie while being lifted up together with the apparatus main body, the scraper can be smoothly moved upward even when the belt conveyor is steeply inclined. Furthermore, since the operation of lifting and engaging (holding) the scraper together with the main body of the device and the operation of returning the lifted scraper to the original state are performed in accordance with the movement of the bogie, a dedicated driving device is used. It can be done automatically without using it.

According to a third aspect of the present invention, the scraper is configured to reciprocate via a plurality of wires and pulleys by a wire winding / rewinding device such as a winch and the wire winding / rewinding device. It is preferable that limit switches for switching the rotation direction are provided near the supply section and the discharge section of the conveyor belt, and an operation section for operating the switches is mounted on the carriage.

According to the third aspect of the present invention, the scraper driving device as the wire winding / rewinding device can be freely and easily installed on the head side, the tail side, or an intermediate position between them. When the driving device is installed on the tail side or the head side, the walkways can be easily installed on both sides of the belt conveyor, and the entire structure for driving the scraper can be simplified. Furthermore, since the movement direction of the scraper (cart) can be automatically converted using the limit switch, the operation of the scraper can be completely automated.

According to a fourth aspect of the present invention, the inclined belt conveyor may be a belt-clipping steep belt conveyor.

The drop collecting device according to claim 4 is a steep belt conveyor of a belt-clamping type having a very steep inclination and easily spilling the load. The effect is exhibited.

According to a fifth aspect of the present invention, the weight is mounted on the truck so that the driving force for rotating the tip end of the scraper device body upward is generated by the truck descending on the track. Is preferred.

According to the fifth aspect of the present invention, since the scraper device main body can be lifted by its own weight when the bogie descends, the return side wire can be lifted without strongly pulling the wire. This is particularly effective in the case of a scraper structure in which the upper wire is always in a tension state.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an apparatus for recovering unloading of an inclined belt conveyor according to the present invention.

FIG. 1 is an overall schematic view showing an embodiment in which the present invention is applied to a belt sandwiching type vertical / steeply inclined belt conveyor.
FIG. 1A is a side view partially omitted, and FIG. 1B is a plan view of the same. As shown in FIG. 1A, a belt sandwiching type vertical / steeply inclined belt conveyor 1 is a device for discharging coal and limestone, and comprises a lower belt conveyor 2 and an upper belt conveyor 3.
Conveyor belt 2 of the lower belt conveyor 2
The upper running section 22 and the lower running section 32 of the conveyor belt 31 of the upper belt conveyor 3 are superposed face to face so as to run at the same speed.

The lower belt conveyor 2 and the upper belt conveyor 3 are supported by a support bridge 14 steeply extending from the lower right to the upper left in FIG. Although not shown, driven pulleys are rotatably supported on the respective lower direction change portions, and are disposed near the lower direction change portion in the upper revolving portion 22 of the lower conveyor belt 21. And a hopper for coal supply. Lower conveyor belt 2
The lower running part (return part) 23 of 1 is tensioned by the tension roller 8 at the lower part. Below the lower traveling portion (return portion) 23 of the lower conveyor belt 21, the fall prevention plate 9 is disposed over substantially the entire length of the support bridge 14. The drop prevention plate 9 has a concave cross section as shown in FIG. 2 (a) and is formed wider than the width of the conveyor belts 21 and 31, and the lower end portion is collected by a scraper device 55 described later. A chute 16 is provided for collecting the unloading and transporting the unloading to the screw conveyor 15, and the unloading is fed to the lower end of the lower conveyor belt 21 by the screw conveyor 15.

FIG. 2A is an enlarged sectional view taken along the line bb of FIG. 1A, FIG. 2B is a view taken along the line aa of FIG. 2A, and FIG. It is a cc line arrow view of a). As shown in FIG. 2, the troughs 4 are arranged on the lower surface of the upper traveling portion 22 of the lower conveyor belt 21 at regular intervals in the traveling direction.
It is supported in a trough. On the other hand, the lower running part 32 of the upper conveyor belt 31 is face-to-face superposed on the upper running part 22 of the lower conveyor belt 21 and is fixed along the running direction above both side ears of the upper and lower conveyor belts 21 and 31. It is pressed by a pressure roller device 5 arranged at intervals. As shown in FIGS. 2A and 2B, the pressing roller device 5 presses the center of the upper conveyor belt 31 near the center line in the width direction on both side ears of the lower running part 32 of the upper conveyor belt 31. A press roller 51 and an edge press roller 52 for pressing an end portion in the width direction are provided on both sides of the support frame 14 in the support bridge 14.
brackets 18 are attached to the cross beams 17 spanned between
It is rotatably mounted via the. Further, an upper traveling portion (return portion) 33 of the upper conveyor belt 31 and a lower traveling portion (return portion) 23 of the lower conveyor belt 21.
Are supported by upper and lower guide rollers 6, 7 arranged at regular intervals along the running direction.

On both sides immediately below the lower guide roller 7,
Tracks 61 having a U-shaped cross section are laid along the traveling direction of the conveyor belt 21. As shown in FIG. 3, wheels 62 running on a track 61 are rotatably provided in front and rear and left and right via bearings 63, and a scraper device 55 is provided on a lower surface.
Is provided so as to be able to travel along a track 61. Guide wheels 64 are provided at four corners of the bogie 60 so as to protrude forward or rearward through brackets 65. Each of the guide wheels 64 is a lower edge 61a of the track 61.
Rotates in contact with.

Further, before and after the carriage 60, brackets 6 are provided.
7, a striker 66 is provided so as to protrude forward or backward, respectively.
When 0 moves upward or downward, the lower limit switch 41 and the upper limit switch 42 disposed on the tail side (supply side) and the head side (discharge side) of the belt sandwiching type vertical / steep belt conveyor 1 are moved. , The striker 66 hits and the switch is switched,
The traveling direction of the carriage 60 is automatically switched. In addition,
A weight (weight) for weight adjustment is provided at the center of the trolley 60.
68 are mounted.

FIG. 4 is a plan view schematically showing a drive mechanism for reciprocating the scraper device 55 (cart 60), FIG. 5 is a side view showing an enlarged scraper lifting mechanism,
6 is an enlarged side view showing a lifting release mechanism of the scraper, FIG. 7A is a side view showing an operation state of the scraper, and FIG. 7B is a side view showing a non-operation state of the scraper.

As shown in FIGS. 5 and 6, a pair of left and right support pieces 56, 56 are protruded downward from the bottom surface of the carriage 60 with a space therebetween, and have a width substantially equal to the inner size of the fall prevention plate 9. The rubber plate (scraper) 58 is connected to a scraper device main body (hereinafter, referred to as a scraper device).
A part of the device body 57 is protruded downward and is replaceably mounted on the front surface (front surface) of the device body 57, and the base end of the device body 57 is rotatably mounted between the support pieces 56 via a rotation shaft 59. The scraper device 55 is configured by wearing. The device main body 57 is rotatably mounted integrally with the rotation shaft 59, and the lower end of the operation piece 70, which is rotatably mounted on the tip of the cam follower 69, is integrally rotatably mounted on one end of the rotation shaft 59. are doing. A fixing piece 91 of the wire 92 is fixedly provided at the base end of the apparatus main body 57 at an intermediate position in the width direction, and one end of the upper wire 92 is fixed to the fixing piece 91. When the rubber plate 58 is lost due to abrasion or the like, a lower limit stopper 85 for preventing the device main body 57 from interfering with the fall prevention plate 9 is disposed downward from the lower surface of the carriage 60. A locking piece 86 extends rearward from the upper rear surface of the 57, and when the locking piece 86 contacts the lower end (stopper member) of the lower limit stopper 85, the downward rotation of the apparatus main body 57 is limited. You. In addition,
As shown in FIG. 3, one end of each of the three supporting wires 94 is fixed to each of three points on both sides and the center in the width direction on the front surface of the bogie 60, and the lower wire 93 is connected to the other end collecting point of the wires 94. Are connected at one end. Also, as shown in FIG.
On both sides of the lower belt conveyor 2, walkways 10 are arranged along the running direction of the belt conveyor 21.

The carriage 6 is moved upward near the tip of the apparatus main body 57.
The locking claw 73 protrudes the lower portion including the claw portion 73a downward from 0, and the upper end of the locking claw 73 is rotatably pivoted by a support shaft 75 on a support plate 74 protruding upward on the carriage 60. Is being worn. A rotor 76 is mounted on the upper end of the locking claw 73. The locking claw 73 is shaped like a square when viewed from the side, makes the lower part of the support shaft 75 heavier than the upper part, and normally urges the claw 73a to rotate counterclockwise. On the other hand, an opening 57a into which the claw portion 73a of the locking claw 73 can be inserted is provided on the top surface on the distal end side of the device main body 57, and the locking portion 57b is provided on the distal end side adjacent to the opening 57a.
Are formed. In addition, auxiliary scrapers 77 are provided at the front and rear positions on both sides of the cart 60, and auxiliary scrapers 78 having increased heights are provided at the center positions on both sides so as to project laterally from the cart 60 as shown in FIG. I have.

The scraper device 55 having the above configuration
When moving (falling) from the head side to the tail side as shown in FIG.
8 comes in contact with the fall prevention plate 9 and descends while collecting the dropped load. At this time, the carriage 60 descends by its own weight (including the weight 68), and the upper wire 91 is always maintained in a tension state. On the other hand, the lower wire 93 is slightly slackened.

On the other hand, when moving (elevating) from the tail side to the head side as shown in FIG. 7A, the rubber plate 58 as a scraper is lifted so as not to contact the fall prevention plate 9. That is, when the scraper device 55 descends while collecting the load by its own weight and approaches the tail side, as shown in FIG.
(Cam mechanism) 19 installed in the vicinity of the
The cam follower 69 at the upper end of 0 is engaged, and the operation piece 70 rotates integrally with the rotation shaft 59 in the counterclockwise direction. Thereby, the rubber plate 58 on the tip side of the apparatus main body 57 is lifted upward. Then, the claw portion 73a of the locking claw 73 on the trolley 60 side is inserted into the opening 57a and locked by the locking portion 57b, and the state in which the rubber plate 58 on the distal end side of the apparatus main body 57 is lifted upward is maintained. You. Almost simultaneously with the end of such an operation, the lower limit switch 41 is hit by the striker 66 in front of the bogie 60 to switch the switch, whereby the running direction of the bogie 60 is automatically switched to the ascending direction.

When the scraper device 55 rises to the vicinity of the head side as shown in FIG. 7B, the rubber plate 58 is lifted up from the drop prevention plate 9 as shown in FIG. Ascending and approaching the head side,
As shown in FIG. 6, the rotor 76 at the upper end of the locking claw 73 contacts the cam-shaped locking release mechanism 20 installed at the center in the width direction in the support bridge 14, and the locking claw 73 is Rotate clockwise. As a result, the claw portion 73a at the lower end of the locking claw 73 is disengaged from the locking portion 57b of the device main body 57 and comes out of the opening 57a, and the distal end side of the device main body 57 rotates downward and the rubber plate 58 is placed on the drop prevention plate 9 Connect to ground. Almost simultaneously with the end of the operation, the striker 66 on the front side of the bogie 60 hits the upper limit switch 42 to switch the switch, whereby the traveling direction of the bogie 60 is automatically switched to the downward direction.

As described above, the unloading recovery device according to the embodiment of the present invention is configured. Next, a mode of recovering the unloading by this device will be described.

In FIG. 1, coal is continuously supplied from a supply hopper (not shown) onto the conveying surface of the lower conveyor belt 21, and the lower traveling surface of the upper conveyor belt 31 is superposed as shown in FIG. , Coal Z ((Fig. 2 (a))
Is transported to the upper head side while being sandwiched between the upper and lower conveyor belts 21 and 31. During this conveyance, coal debris and the like may fall out from between the ears on both sides of the upper and lower conveyor belts 21 and 31. In FIG. 2, spilled coal debris and the like are conveyed to the lower guide roller 7
From the gap between the support frame 14a and the support frame 14a on both sides. At this time, some of the coal debris and the like may stay near the track 61, but these coal debris and the like are dropped on the drop prevention plate 9 by the auxiliary scrapers 77 and 78 by the reciprocating movement of the carriage 60.

As shown in FIG. 4, the upper wire 93 is wound by the rotation of the wire winding drum 82 via the speed reduction mechanism 81 by the drive motor 80 provided on the head side, and the carriage 60 is moved to the track 61. Move up along. In the case of this example, the drive motor 80 and the speed reduction mechanism 81
And the winding drum 82 constitutes the winch 79. In addition, as shown in FIG. 4, a pulley 83 is rotatably disposed at the direction changing portion of the wires 92 and 93. The drive motor 8
0 is the conveyor belt 21 while the belt conveyor 1 is operating.
The driving is performed in conjunction with the driving of a driving motor (not shown). That is, the scraper device 55, together with the carriage 60,
During the operation of the belt conveyor 1, it reciprocates along the fall prevention plate 9. Switching of the moving direction of the carriage 60 is automatically performed by the front and rear strikers 66 on the carriage 60 hitting the lower limit switch 41 or the upper limit switch 42 on the tail side as described above.

The carriage 60, ie, the scraper device 55
As shown in FIG. 7B, when ascending, the rubber plate 58 at the end of the apparatus main body 57 is lifted upward and moves while being locked by the locking claw 73. Therefore, it does not function as a scraper. Thus, it moves to the head side.

In the vicinity of the head side, as shown in FIG. 6, the rotor 76 at the upper end of the locking claw 73 contacts the locking release mechanism 20 as the carriage 60 moves, and the locking claw 73 rotates clockwise to engage. The stop state is released, the front end side of the apparatus main body 57 rotates downward, and the lower end of the rubber plate 58 contacts the fall prevention plate 9. Then, the moving direction of the carriage 60 switches downward,
The rubber plate 58 descends with the lower end in contact with the fall prevention plate 9. As a result, as shown in FIG.
8 descends while collecting the coal debris and the like dropped on the fall prevention plate 9. In this state, although the upper wire 92 is unwound, the downward gravity acts due to the weight of the bogie 60, so that the wire 92 is kept in tension and descends, and the scraper (rubber plate) 58 functions. I do.

The truck 60 descends to the tail side, and during this time, coal dust and the like on the fall prevention plate 9 are raked up by the rubber plate 58, pass through the chute shown in FIG. 1, and fall on the lower end of the lower conveyor belt 21 by the screw conveyor. It is thrown in again. When the carriage 60 descends to the vicinity of the tail side, the cam follower 69 at the upper end of the operation piece 70 engages with the cam 19 as shown in FIG. 5, and the operation piece 70 is rotated counterclockwise.
The tip side of the scraper body 57 is lifted, and the locking claw 73 is raised.
Is locked by the locking portion 57b. This operation is performed by the downward gravity caused by the weight of the carriage 60 (including the weight 68) and the inertial force of the carriage 60. As a result, the rubber plate 58 is separated upward from the fall prevention plate 9. And
The moving direction of the carriage 60 is switched upward. Thus, the scraper device 55 reciprocates vertically on the fall prevention plate 9.

Although the embodiment of the present invention has been described above, the unloading and collecting apparatus according to the present invention can be implemented as follows.

1) Gears (teeth) that can mesh with each other are formed on the outer peripheral portion of the cam follower 69 and the linear portion of the cam 19, and the operating piece 70 is rotated by meshing the gears. Good.

2) The traveling of the carriage 60 is performed by rotating the pinion by a drive motor having a rack-shaped track mounted on the carriage 60, for example, instead of the winch, wire, pulley, or the like, in place of the wheel 62 instead of the pinion. Can also be.

3) In the above-described embodiment, the steep belt conveyor sandwiching the belt has been described. However, it is needless to say that the present invention can be applied to a general inclined belt conveyor including only a conveyor belt for conveyance.

[0042]

As is apparent from the above description,
The unloading recovery device for an inclined belt conveyor according to the present invention has the following effects.

(1) Since the collection point of the bulk material is only one at the tail side, the entire structure can be simplified as compared with each conventional device. In addition, since the scraps on the fall prevention plate are scraped only when the scraper moves downward, the rate of weight increase is small even if the collection distance of the unloading is extended, and particularly suitable when the belt conveyor is steeply inclined. It is.

(2) According to the second aspect of the present invention, the scraper is moved by the truck traveling on the track, and the scraper functions only when descending. Therefore, even if the distance for recovering the unloading becomes long, the scraper can be moved. The scraper can be moved smoothly with a relatively small driving force, and when moving upward, the scraper is lifted up with the main body and moved upward by the bogie, so even if the belt conveyor is steeply inclined, the scraper can be moved. Can be smoothly moved upward.

Further, the operation of lifting and engaging (holding) the scraper together with the main body and the operation of returning the lifted scraper to the original state are performed in accordance with the movement of the carriage, respectively. It is unnecessary and can be automated.

(3) According to the third aspect of the present invention, the drive unit of the scraper such as a winch can be freely and easily installed on the head side, the tail side or an intermediate position between them, and the drive unit can be mounted on the tail side. Alternatively, when installing on the head side, walkways can be easily installed on both sides of the belt conveyor, and the overall structure can be simplified.

Further, since the direction of movement of the scraper (cart) can be automatically converted using the limit switch, the operation of the scraper can be completely automated.

(4) If the present invention is applied to a belt sandwiching type steeply inclined belt conveyor as in the invention described in claim 4, the present invention is particularly effective and sufficiently effective.

(5) According to the fifth aspect of the present invention, the scraper body can be lifted by its own weight when the bogie descends, so that the return side wire can be lifted without being strongly pulled, and especially the upper side wire can be lifted. This is effective in the case of a scraper structure in which the wire is always in a tension state.

[Brief description of the drawings]

FIG. 1 is an overall schematic view showing an embodiment in which the present invention is applied to a belt sandwiching type vertical / steeply inclined belt conveyor.
(A) is a side view with a part omitted, and FIG. 1 (b) is a plan view of the same.

FIG. 2A is an enlarged sectional view taken along line bb of FIG. 1A, and FIG. 2B is a view taken along line aa of FIG. 2A.

FIG. 3 is a view taken along line cc of FIG. 2 (a).

FIG. 4 is a plan view schematically showing a driving mechanism for reciprocating a scraper device 55 (cart 60).

FIG. 5 is an enlarged side view showing a lifting mechanism of the scraper.

FIG. 6 is an enlarged side view showing a lifting release mechanism of the scraper.

FIG. 7A is a side view showing an operation state of the scraper, and FIG. 7B is a side view showing a non-operation state of the scraper.

[Explanation of symbols]

Reference Signs List 1 Belt sandwiching vertical / steeply inclined belt conveyor (inclined belt conveyor) 2 Lower belt conveyor 3 Upper belt conveyor 9 Fall prevention plate 19 Cam 20 Lock release mechanism 21/31 Conveyor belt 55 Scraper device 57 Scraper device main body 58 Rubber plate ( Scraper) 59 Rotating shaft 69 Cam follower 70 Operation piece 73 Locking claw 92, 93, 94 Wire

Claims (5)

[Claims] 1. A fall prevention plate is provided below a return side belt of a conveyor belt along a belt traveling direction.
The discharge unit is provided at a position higher than the supply unit, and in a tilted belt conveyor that conveys bulk materials such as coal and ore, a scraper for scraping the bulk materials falling on the fall prevention plate can be reciprocated. An unloading and collecting apparatus for an inclined belt conveyor, wherein the scraper is arranged so as to exhibit a scraping function only when the scraper moves downward. 2. A truck is provided so as to be able to run on a track provided above the fall prevention plate below a return side belt of the conveyor belt, and a base end of a scraper device main body is provided on a bottom surface of the truck. A cam follower that is rotatably supported in a vertical direction about a horizontal rotation shaft, has the scraper mounted on the tip of the scraper device main body, and is integrally rotatably mounted on the rotation shaft of the scraper device main body. A cam mechanism that engages and rotates the tip side of the scraper device main body upward is provided in the vicinity of a supply portion of the conveyor belt, and a locking portion provided on the scraper device main body when the scraper device main body rotates upward. A lock release mechanism for providing a lockable locking claw on the carriage and abutting near an upper end of the locking claw to release a locked state between the locking claw and the locking portion is provided in the carriage.落荷 recovery apparatus of the inclined belt conveyor according to claim 1, wherein provided in the discharge section near the use conveyor belts. 3. A limit switch configured to reciprocate the scraper through a plurality of wires and pulleys by a wire winding / rewinding device such as a winch, and to switch a rotation direction of the wire winding / rewinding device. 3. An unloading and collecting apparatus for an inclined belt conveyor according to claim 1, wherein said conveyor belt is disposed in the vicinity of a supply section and a discharge section of said conveyor belt, and an operation section for operating switches thereof is mounted on said carriage. . 4. The unloading recovery device for an inclined belt conveyor according to claim 1, wherein the inclined belt conveyor is a steeply inclined belt conveyor of a belt sandwiching type. 5. A weight is mounted on the truck so that a driving force for rotating the tip end side of the scraper device body upward is generated by the truck descending on a track. An unloading recovery device for an inclined belt conveyor as described in the above item.