JP3097230U - Conveyor falling object cleaning device - Google Patents

Abstract

An object of the present invention is to prevent a contact strength of a scraper against a receiving plate from fluctuating.
A traveling carriage (3) is provided on a falling object receiving plate (1) below a conveyor (10), and a reciprocating traveling carriage (3) is provided. A shock absorber 11 is interposed between the lever 6 and the scraper 4. The strap reaching both ends of the conveyor 10 is locked to the lever 6 and the scraper 4 is swung downward via the lever 6 and the shock absorber 11 by pulling the string in one direction in the transport direction, so that the receiving plate 1 At the same time, the traveling carriage 3 is moved to one side, and the string is pulled to the other side, so that the scraper 4 is swung upward to be separated from the receiving plate 1 and the traveling carriage 3 is moved to the other side. Since the shock absorber 11 absorbs the falling object and the impact from the receiving plate 1 on the scraper 4, the fluctuation of the contact strength can be reduced, and even if the scraper 4 is worn, the fluctuation of the contact strength can be reduced. Can be reduced.
[Selection diagram] Fig. 1

Description

[0001]
[Technical field to which the invention belongs]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device that collects fallen and fallen objects dropped on a fallen object receiving plate installed below a conveyor.
[0002]
[Prior art]
Generally, as shown in FIGS. 3 and 4 which are explanatory views of the present invention, a conveyor for handling powdery and granular objects is provided below the return side belt portion 2b of the belt conveyor 10 in order to prevent falling objects. A falling object spilled as shown by an arrow A from the carrier side belt portion 2a for carrying a conveyed object shown in FIG. 4 and a substance adhering to the return side belt portion 2b are placed on the floor surface. Not to fall.
[0003]
However, if the conveyed material is a combustible material such as coal, wood chips, or the like, and this falling object is left, static electricity is generated when the belt portions 2a and 2b and the conveyor frame F come into contact due to the meandering of the conveyor belt or the like. And the static electricity may ignite the falling object, causing a fire. Therefore, it is necessary to frequently clean the fallen object and the deposit on the fallen object receiving plate.
[0004]
The cleaning of the fallen object on the fallen object receiving plate is mainly performed manually, but as a device for automatically cleaning the fallen object on the receiving plate, there is, for example, a cleaning device disclosed in Patent Document 1. As shown in FIG. 6, the cleaning device 1 is provided with a carriage 23 that can reciprocate along the transport direction of the conveyor 20 on a receiving plate 21 below the return belt portion 22b of the conveyor 20. Scrapers 24a, 24b are attached to both ends thereof so as to be vertically swingable via rotary shafts 25a, 25b orthogonal to the transport direction.
[0005]
One ends of the strings 27 and 28 are locked together with one scraper 24a to a lever 26a that swings around the rotation shaft 25a, and the other ends of the strings 27 and 28 reach both ends of the conveyor 20, respectively. It is windably engaged with the winch provided in the section. Similarly, the other scraper 24b is provided with a lever 26b swinging around the rotation shaft 25b together with the scraper 24b, and the lever 26b and the lever 26a are connected to each other by a pin via a connecting rod 30. Therefore, by pulling the string 27 or the string 28 to one or the other, respectively, the scrapers 24a and 24b swing in conjunction with the respective rotation shafts 25a and 25b in accordance with the pulling direction. It has become.
[0006]
As shown by an arrow B in FIG. 6, the bogie 23 moves rightward by winding up the string 27 with a winch and pulling the string 27 to one side, and the scrapers 24 a and 24 b move around the respective rotation shafts 25 a and 25 b. 6, swings clockwise from the chain line to the direction shown by the solid line as shown by arrows C and D in FIG. At this time, the sliding edge at the lower part of the right scraper 24 a contacts the receiving plate 21, and the back surface of the scraper 24 a contacts the vertical end surface 23 a of the carriage 23. This abutment allows the end face 23a of the bogie 23 to receive a force acting from the scraper 24a toward the bogie 23 when the scraper 24a collects falling objects while the bogie 23 proceeds to one side.
[0007]
Further, since this cleaning device is provided with scrapers 24a and 24b on both the left and right sides, as shown by an arrow E in FIG. 23 moves to the left, and both scrapers 24a and 24b swing counterclockwise from the solid line to the direction indicated by the chain line as indicated by arrows F and G in FIG. 7 around the respective rotation shafts 25a and 25b. Move. At this time, the sliding edge of the lower part of the left scraper 24b abuts on the receiving plate 21 as in the case of the right scraper 24a. Can be.
[0008]
In this cleaning device, the left and right scrapers 24a, 24b are fixed in such a manner that one scraper on the unused side is always fixed at a position where the scraper is not lifted up when the fallen object is collected only in one direction while the traveling cart 23 is reciprocated. The stoppers 29a and 29b are provided for selectively locking one of them in a raised state.
[0009]
[Patent Document 1]
JP-A-10-129830
[Problems to be solved by the invention]
In the cleaning device described above, when the string 27 or the string 28 is pulled, one of the scrapers 24 located on the pulling side swings to the rear side as shown by the arrow C in FIG. Is fixed so that it will not move further to the rear side at that position. At this time, the horizontal force applied to the traveling carriage 23 from the scraper 24 is transmitted to the end face 23a as it is. In addition, since the vertical force applied to the traveling carriage 23 from the scraper 24 is transmitted to the rotating shaft 25 as it is, when an impact is applied to the scraper 24 from a falling object or the receiving plate 21, the scraper 24 and the carriage 23 float. It is not stable because of jumping and jumping.
[0011]
The vertical contact strength of the scraper 24 with respect to the receiving plate 21 can be adjusted by changing the height of the sliding edge of the scraper 24. If the contact of the carriage 23 is set strong, the above-mentioned floating and jumping are reduced, but the running resistance of the carriage 23 is increased, and the cleaning of the carriage 23 is hindered. Conversely, if the sliding edge is positioned upward and the contact is weakly set, the scraper 24 rides on the falling object, so that the sliding edge rises and the falling object may not be collected properly.
[0012]
Further, the degree of the contact may be weakened due to wear of the sliding edge of the scraper 24.
[0013]
In view of the above, an object of the present invention is to prevent the scraper from coming up and prevent the scraper from lifting up while keeping the strength of contact of the scraper with the receiving plate unchanged.
[0014]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the falling object cleaning device for a conveyor of the present invention is provided with a traveling cart that can reciprocate along the conveying direction of the conveyor on a falling object receiving plate below the conveyor for conveyance. A scraper is attached to the traveling vehicle so as to be vertically swingable, and a lever above the scraper is attached to the traveling vehicle so as to be able to swing vertically, and an elastic material is interposed between the lever and the scraper. The cords reaching both ends of the conveyor are locked.
[0015]
By pulling the string in one of the transport directions, the lever is pivoted downward, the scraper is pivoted downward through the elastic material to contact the falling object receiving plate, and the traveling cart is moved to one side. Let it. Further, by pulling the string in the other direction in the transport direction, the lever is pivoted upward to pivot the scraper upward through the elastic material to separate the scraper from the falling object receiving plate, and the traveling cart is moved to the other side. I moved them.
[0016]
By pulling the string to one side, the scraper descends and comes into contact with the falling object receiving plate, and at this time, the elastic material absorbs the impact on the scraper in the vertical direction and horizontal direction from the falling object and the receiving plate. Floating and jumping of the scraper and the bogie are reduced, and the fluctuation of the contact strength to the receiving plate can be reduced.
[0017]
In addition, since the elastic member presses the scraper downward with an appropriate repulsive force, a variation in the contact strength of the scraper with the receiving plate can be reduced even when the sliding edge is worn.
[0018]
Means for reciprocating the traveling carriage can use a known method.For example, a configuration in which the string is pulled to one or the other by winding a winch provided at both ends of the conveyor can be adopted. Further, as another configuration, the string is composed of a string heading in one direction in the transport direction and a string heading in the other direction, and the two strings are fitted and attached to rotors provided at both ends of the conveyor, respectively. A configuration in which the ends are connected to each other and the cord is pulled in one or the other direction in the transport direction by rotation of the rotor may be employed.
[0019]
Further, as the elastic material, a well-known material having a function of absorbing and absorbing shock and then restoring to the original state can be used, and this elastic material is used as a shock absorber, and the shock absorber is replaced with the scraper. And a structure in which the lever and the lever are interposed by being pin-joined. Further, if the elastic material is a coil spring or rubber, the device can be simplified.
[0020]
In addition, the scraper and the lever may be provided on the same rotation shaft, or may be provided on different rotation shafts.
[0021]
[Embodiment of the invention]
One embodiment is shown in FIGS. 1 to 4, and a falling object cleaning device for a conveyor according to this embodiment is a conveyor belt conveyor for handling powdery and granular objects, and as shown in FIGS. Below the return side belt portion 2b of the belt conveyor 10 supported by the above, there is provided a receiving plate 1 for preventing falling objects along the conveying direction, and from above the carrier side belt portion 2a for carrying the conveyed object. The fallen object spilled as shown by arrow A and the adhered matter to the return side belt portion 2b are received on the receiving plate 1 so as not to fall on the floor surface.
[0022]
A traveling carriage 3 is provided on the falling object receiving plate 1 so as to be able to reciprocate along the conveying direction of the conveyor 10. The traveling cart 3 has wheels 14 projecting to both sides in a direction perpendicular to the conveying direction of the conveyor 10, and the wheels 14 are provided on the frames F on both sides above the receiving plate 1. The reciprocating movement is guided by being fitted to the guide rails 15 so as to freely roll.
[0023]
As shown in FIG. 1, a scraper 4 is attached to the traveling vehicle 3 via a rotating shaft 5 so as to be swingable in a vertical direction, and the traveling vehicle 3 is provided with a lever 6 which is directed upward from the scraper 4. It is mounted so as to be swingable up and down via a rotating shaft 5. A shock absorber 11 is provided between the lever 6 and the scraper 4. The shock absorber 11 expands and contracts according to the load by applying a predetermined load to exhibit a shock absorbing function, and both ends of the shock absorber 11 are connected to the lever 6 and the scraper 4. Connect to the scraper 4 with a pin.
[0024]
One end of two strings 7, 8 is locked to the lever 6, and the other ends of the strings 7, 8 reach both ends of the conveyor 10, respectively, as shown in FIG. It is windably engaged with winches 9, 9 provided at both ends, respectively.
[0025]
By pulling the cord 7 in one of the transport directions indicated by arrows in FIG. 1A, the lever 6 is pivoted downward, and the scraper 4 is pivoted downward via the shock absorber 11, and is illustrated. As described above, the sliding edge 4a of the scraper 4 is brought into contact with the falling object receiving plate 1, and the traveling carriage 3 is moved to one side.
[0026]
Also, by pulling the string 8 in the other direction in the transport direction indicated by the arrow in FIG. 1B, the lever 6 is swung upward, and the scraper 4 is swung upward through the shock absorber 11, As shown in the figure, the sliding edge 4a of the scraper 4 is separated from the falling object receiving plate 1, and the traveling carriage 3 is moved to the other side.
[0027]
In this reciprocating movement, when the scraper 4 comes into contact with the receiving plate 1, falling objects to the scraper 4 and vertical impacts from the receiving plate 1 are absorbed by the expansion and contraction of the shock absorber 11, so that the scraper 4 Floating and jumping of the cart 3 are reduced, and fluctuations in the contact strength to the receiving plate 1 (the pressing force against the receiving plate 1) can be reduced. It is preferable that the shock absorber 11 be provided with a coil spring or the like so that the shock absorber 11 can be restored to the original state after absorbing and shrinking the shock.
[0028]
When the scraper 4 is in contact with the receiving plate 1 shown in FIG. 1A, the mounting angle of the shock absorber 11 is changed from the end of the shock absorber 11 on the scraper 4 side to the end of the lever 6 on the lever 6 side. If the shock absorber 11 is set to be inclined to the other side, the shock absorber 11 will be in a state of having an angle in the horizontal direction from the vertical state shown in the figure, so that the horizontal shock applied to the scraper 4 from one side to the other side will also be reduced. It can be absorbed by the expansion and contraction of the shock absorber 11.
[0029]
The lever 6 is provided with a stopper 16 as shown in FIGS. 1 and 2. The lever 6 swings to the other side, and the stopper 16 of the lever 6 contacts the bogie 3 at a predetermined position. And does not further swing to the other side. For this reason, the scraper 4 stops at a predetermined height and does not swing upward any more.
[0030]
The material of the scraper 4 is not particularly limited, but a material such as rubber, urethane rubber, cemented carbide, or ceramic can be used. In the scraper 4, only the sliding edge 4a that comes into contact with the receiving plate 1 is used. If the detachable sliding edge 4a is made of the above-mentioned material, the scraper 4 can be prevented from being damaged due to abrasion.
[0031]
If an elastic resin such as rubber or urethane rubber is used for the scraper 4 or its sliding edge 4a, the lower end is elastically deformed and easily adheres to the receiving plate 1; If a wear-resistant material such as ceramic is used, the sliding edge is less worn, so that the scraper or its sliding edge is less frequently replaced.
[0032]
In this embodiment, the wheels 14 are provided to protrude to the side of the bogie 3, and the guide rails 15 are provided on the frames F on both sides above the receiving plate 1. However, the present invention is not limited to this embodiment. The rail 15 may have any cross-sectional shape as long as the wheel 15 fits and rolls along the transport direction within the guide rail 15.
[0033]
For example, as shown in FIG. 4, in addition to the mode of the present embodiment in which the wheels 14 are mounted on the upper surfaces of guide rails 15 provided on both sides, the guide rails 15 may have a U-shaped cross section. The wheel 14 may be fitted so as to be able to roll while abutting between the opposed members of the U-shaped guide rail 15. Further, the wheels 14 may be provided on a lower portion of the bogie 3, and the guide rails 15 may be provided on an upper surface of the receiving plate 1.
[0034]
As a means for reciprocating the traveling carriage 3, a known method can be used. In addition to this embodiment, for example, as shown in FIG. Are attached to rotatable rotors 12 and 13, respectively, and the other ends of the strings 7 and 8 are connected to each other. , 13 can be rotated to pull the string 7 toward one or the string 8 toward the other.
[0035]
In this embodiment, the shock absorber 11 is used as the elastic member 11, but the elastic member 11 has a cushioning function to reduce a mechanical shock, and any device having a restoring force can be used in this embodiment. Is not limited. For example, in addition to the above, a coil spring and rubber are also conceivable, and any other material that absorbs kinetic energy using hydraulic pressure or air pressure and restores the original state has the same effect. Can be used as
[0036]
[Effect of the invention]
ADVANTAGE OF THE INVENTION This invention can soften the impact to a scraper, can make the movement of a truck smooth, and can prevent the scraper and the truck from rising and jumping.
[Brief description of the drawings]
FIGS. 1A and 1B are side views of one embodiment, wherein FIG. 1A shows a state where a scraper is lowered, and FIG. 1B shows a state where the scraper is raised.
FIG. 2 is a plan view of the same embodiment. FIG. 3 is an explanatory view showing a use form of the conveyor. FIG. 4 is a cut front view of the conveyor of the same embodiment. FIG. 5 shows a use form of a conveyor of another embodiment. FIG. 6 is a side view of a conventional apparatus for cleaning falling objects of a conveyor. FIG. 7 is a side view of a conventional apparatus for cleaning falling objects of a conveyor.
1, 21 Falling object receiving plate 2a, 22a Carrier side belt portion 2b, 22b Return side belt portion 3, 23 Traveling trolley 4, 24, 24a, 24b Scraper 5, 25, 25a, 25b Rotary shaft 6, 26, 26a, 26b Lever 7, 8, 27, 28 String 9 Winch 10, 20 Conveyor 11 Elastic material (shock absorber)
12, 13 rotor 14 wheels 15 guide rails 16, 29a, 29b stopper 30 rod

Claims (6)

A traveling vehicle 3 that can reciprocate along the direction of transport of the conveyor 10 is provided on a fallen object receiving plate 1 below the conveyor 10, and a scraper 4 is attached to the traveling vehicle 3 so as to swing vertically. The scraper 4 is locked with a string reaching both ends of the conveyor 10, and the string is pulled in one direction in the transport direction to swing the scraper 4 downward to contact the falling object receiving plate 1 and By moving the traveling cart 3 and pulling the string to the other side, the scraper 4 is swung upward to separate it from the falling object receiving plate 1 and to move the traveling cart 3 for a falling object cleaning device of a conveyor.
A lever 6 above the scraper 4 is attached to the traveling carriage 3 so as to be vertically swingable, an elastic material 11 is interposed between the lever 6 and the scraper 4, and the string is locked to the lever 6; By pulling the string in one direction in the transport direction, the lever 6 is pivoted downward to swing the scraper 4 downward through the elastic member 11, and the string is pulled in the other direction in the transport direction. The scraper 4 is swung upward through the elastic member 11 so that the scraper 4 is swung upward. The string is composed of a string 7 heading in one direction of the transport direction and a string 8 heading in the other direction. The strings 7 and 8 are fitted to rotors 12 and 13 provided at both ends of the conveyor 10, respectively. 3. The fallen object cleaning device for a conveyor according to claim 1, wherein the string 7 is pulled to the one side or the string 8 is pulled to the other side by rotation of the rotors 12 and 13. 4. The conveyor according to claim 1 or 2, wherein the elastic member (11) is a shock absorber, and the shock absorber is interposed by pin-joining the scraper (4) and the lever (6). apparatus. The apparatus according to claim 1 or 2, wherein the elastic member (11) is a coil spring. 3. The apparatus for cleaning falling objects of a conveyor according to claim 1, wherein the elastic member 11 is rubber. The apparatus for cleaning falling objects of a conveyor according to any one of claims 1 to 5, wherein the scraper (4) and the lever (6) are provided on a same rotating shaft (5).

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