JP3877184B2 - Scraper device for belt conveyor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scraper device for a belt conveyor.
[0002]
[Prior art]
For example, in the slope stabilization method, organic base materials such as cement, bark compost or peat moss are applied to the target surface, and these materials are conveyed to a predetermined location by, for example, a belt conveyor. Is done. As this type of belt conveyor, as shown in FIGS. 1 and 2, an endless belt 1 is wound around a driving roller 2 and a driven roller 3 which are generally called motor pulleys (pulley motors), and an appropriate gap is formed between them. A structure of guiding by guide rollers 4, 4... Is used. Each of the roller groups 2, 3, 4, 4... Is supported by a support frame 5, and a hopper guide 6 for stably supplying the material onto the belt 1 is provided at the material charging position. Further, as shown in FIG. 3, the rotation shaft 2 a of the drive roller 2 is inserted into a long hole 5 a formed along the conveying direction of the belt 1 in the auxiliary frame 5 </ b> A, and is attached to the tip of the motor adjustment bolt 7. It is pivotally supported by a mounted bearing 8. For this reason, the position of the driving roller 2 can be moved by the motor adjusting bolt 7 according to the length of the belt 1, and thus the distance between the driving roller 2 and the driven roller 3 can be finely adjusted. Yes. Reference numeral 5B denotes a protective frame that protects the drive roller 2 and the like.
[0003]
However, when transporting materials that solidify or contain sticky water, especially with a belt conveyor that transports materials for stabilizing the slope, the transport material overflows from the side edges of the belt. When it is turned around, it eventually adheres to the outer surface of the driving roller 2 or the driven roller 3 as the belt moves, and solidifies in the attached state, and eventually accumulates on the outer surface of the roller.
[0004]
In this way, the outer diameter of the roller increases due to the adhered / solidified material on the outer surface of the roller, and the adhered material is unevenly distributed with respect to the longitudinal direction of the roller. there were. In particular, when the transport material is cemented and vegetation base material and contains water, the viscosity is high and solidification occurs, the phenomenon is more remarkable.
[0005]
When this phenomenon occurs, the belt wears violently as the belt is displaced, so that the life of the belt is extremely shortened and the conveyance itself may be hindered.
[0006]
In order to avoid such a situation, conventionally, it has been necessary to periodically perform a manual operation in which the belt is once removed from the roller and the roller is struck with a hammer or the like to remove the attached matter. However, this work not only requires a lot of labor, but also has a problem that it may hinder the main body construction work.
[0007]
Therefore, in Japanese Patent Laid-Open No. 64-13327, the scraper is urged from below by a spring member to bring the scraper into contact with the lower surface of the conveyor belt, while on the opposite side of the surface of the belt conveyor on which the scraper comes into contact. A scraper device in which a roller is brought into contact with a surface is disclosed. In Japanese Patent Application Laid-Open No. 47-21876, an adhering number of scrapers on a belt conveyor, which is formed in parallel with an appropriate number of scrapers and obliquely parallel to the roller shaft and cut at the tip thereof in a sawtooth shape, is cut. A missing roller scraper is disclosed.
[0008]
[Problems to be solved by the invention]
However, none of the above prior arts directly removes deposits on the drive roller. For example, the scraper device disclosed in Japanese Patent Application Laid-Open No. 64-13327 is a device that removes deposits on the conveyor belt, and therefore does not directly remove deposits on the drive roller. Therefore, the deposits on the roller cannot be removed efficiently.
[0009]
On the other hand, the roller scraper disclosed in Japanese Patent Application Laid-Open No. 47-21876 is installed on the driven roller, and the scraper is moved vertically by adjusting bolts and spring nuts provided at both ends of the scraper device. Thus, the roller and the scraper are adjusted to have a certain gap. Although this scraper device is considered to be effective for a driven roller having a fixed rotation shaft, it can follow the movement of a driving roller that can move along the belt conveyance direction. Therefore, the deposits on the drive roller cannot be removed efficiently.
[0010]
Therefore, an object of the present invention is to prevent the deviation of the conveyor belt by directly and efficiently removing the deposits on the driving roller, thereby reducing the wear of the belt and stopping the construction itself. Is to prevent.
[0011]
[Means for Solving the Problems]
The present invention according to claim 1, which has solved the above problem, winds an endless belt between a driving roller and a driven roller that are rotatably supported by a support frame, respectively, and the driving roller is in the longitudinal direction of the belt conveyor. In a belt conveyor that is movable with respect to the support frame along
A scraping member for scraping off deposits on the outer peripheral surface by abutting along the generatrix direction of the outer peripheral surface of the drive roller, and a scraping member integrated with the scraping member. And a swing shaft for supporting the
The scraping member is swingable about the swing shaft in a direction in which a contact force with respect to the outer peripheral surface of the drive roller is increased, and the swing shaft together with the scraping member is the drive roller. it is movable along the longitudinal direction of a moving direction,
A first urging means for urging the oscillating shaft in the longitudinal direction, which is the moving direction of the drive roller, and a direction in which the contact force of the scraping member is increased; and the scraping about the oscillating shaft. A scraper device for a belt conveyor, comprising: a second urging unit that oscillates the take-up member and urges the take-up member in a direction in which the contact force is increased.
[0012]
Further, the invention according to claim 2, wherein the support frame has both side portions frame, forming the longitudinal direction along the long hole in these sides the frame respectively, said rocking shaft thereto slot And a lever is integrated with at least one end portion of the swing shaft, and a first tension spring constituting a first biasing means is provided between the swing shaft or the lever and the side frame. The belt conveyor according to claim 1 , wherein a second tension spring constituting a second urging means is provided between the lever and the side frame on the side opposite to the side where the first tension spring is disposed. It is a scraper device.
[0013]
In the present invention, the swinging shaft of the scraping member that is movable in the longitudinal direction of the belt conveyor is moved in the longitudinal direction of the belt conveyor and the scraping member by the first biasing means made of, for example, a tension spring. It is energized in the direction in which the contact force increases. For this reason, unlike the case where the swing shaft is fixed, the scraping member follows the movement of the driving roller when the driving roller is moved along the longitudinal direction of the belt conveyor. The state of being brought into contact with the roller at a suitable angle is maintained.
[0014]
However, there is a possibility that a good scraping force cannot be applied only by the scraping member following the movement of the driving roller. Therefore, in the present invention, the scraping member is swung around the swinging shaft by the second biasing means made of, for example, a tension spring to bias the scraping member in a direction in which the contact force of the scraping member is increased. ing. Therefore, since a good contact force can be applied, even when the drive roller moves, the scraping member can be reliably brought into contact with the drive roller, so that the scraping force is lost. Therefore, the deposits on the drive roller can be removed reliably and efficiently.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 4 is a schematic front view showing a state in which the scraper device 10 according to the present invention is provided on the belt conveyor shown in FIGS. 1 to 3, and FIGS. 5 and 6 are enlarged views of main parts thereof.
[0016]
The scraper device 10 for removing the deposits on the drive roller 2 includes a scraping member 11 that actually comes into contact with the drive roller 2 to scrape deposits, and a swing shaft 12 integrated therewith. The swing shaft 12 is swingably supported by a protective frame 5B that functions as a support frame. As the scraping member 11, for example, a flat steel slightly wider than the body of the driving roller 2 is used. As shown in FIG. 7, the scraping member 11 has a notch at the boundary with the swing shaft 12. A portion 11a is formed, and the deposit scraped off from the drive roller 2 can be dropped downward through the notch portion 11a.
[0017]
One end of the swing shaft 12 is integrated with a horizontally long lever 13 by welding and fixing, and the lever 13 is arranged so that its longitudinal direction is substantially along the longitudinal direction of the belt conveyor. The rocking shaft 12 and the lever 13 can be bolt-fixed instead of welding. Further, the other ends of the first springs 14 and 14 made of a tension spring each having one end fixed to the protective frame 5B are attached to positions slightly inside the both ends of the swing shaft 12. The other end of the lever 13 is attached to the other end of a second spring 15 made of a tension spring having one end fixed to the auxiliary frame 5A. The support frame 5 is formed with long holes 16, 16 whose long sides are along the conveying direction of the belt 1, and the swing shaft 12 is inserted through the long hole 16 and supported so as to be swingable.
[0018]
The operation of the scraper device 10 will be described. The swing shaft 12 is urged by the tensile force of the first spring 14 in the longitudinal direction of the belt conveyor and in the direction in which the contact force of the scraping member 11 increases. The scraping member 11 integrated with the swing shaft 12 is also urged in the same direction. At this time, the drive roller 2 and the scraping member 11 are adjusted to a suitable angle for scraping. Further, the other end of the lever 13 is urged in the tension direction of the second spring 15, that is, vertically downward by the tension force of the second spring 15. At this time, since the scraping member 11 and the swing shaft 12, and the swing shaft 12 and the lever 13 are respectively integrated, the scraping member 11, the swing shaft 12, and the lever 13 form one system. Since the swing shaft 12 is swingably supported, the biasing force of the second spring 15 in the scraping member 11 is converted into a rotation direction around the swing shaft 12. Therefore, as a result, the urging force of the second spring 15 is applied in the direction in which the contact force of the scraping member 11 with respect to the drive roller 2 is increased. Since the urging force by the first spring 14 and the urging force by the second spring 15 are combined, the contact angle between the scraping member 11 and the drive roller 2 is maintained at a suitable angle, and a sufficient contact force is given. The deposits on the drive roller 2 can be efficiently removed.
[0019]
By the way, in the belt conveyor, as described above, the old belt 1 may be replaced with another new belt 1A. In this case, if the length of the new belt 1A is different from the length of the old belt 1, As shown in FIG. 8, the driving roller 2 is moved along the length direction of the long hole 5a by the motor adjusting bolt 7, and the distance between the driving roller 2 and the driven roller 3 is adjusted to the length of the newly installed belt 1A. Adjust. In such a case, in the scraper device 10 according to the present invention, the oscillating shaft 12 moves along the long hole 16 so as to follow the movement of the drive roller 2 by the urging force of the first spring 14. Since the scraping member 11 moves in the same direction together with the swing shaft 12, the contact angle between the drive roller 2 and the scraping member 11 remains at a suitable angle. Further, since the urging force is applied in the direction in which the abutting force against the driving roller 2 is increased by the second spring 15, the force that the scraping member 11 scrapes off the deposits from the driving roller 2 is attached to the old belt 1. It is not inferior to the state at the time. Therefore, the deposits on the driving roller 2 can be efficiently removed.
[0020]
As the scraping member, an appropriate material such as a scraping rubber plate or a wire brush can be used instead of flat steel.
[0021]
On the other hand, the follower roller 3 is substantially larger than the granular conveying material on the surface member constituting the outer surface of the roller that is in contact with the belt, as disclosed in Japanese Patent Application Laid-Open No. 8-40527. It is preferable to use a roller for a belt conveyor having a through hole through which the material can be removed. The roller 20 will be described in detail with reference to FIG. 9 and FIG. 10. The roller 20 has a cylindrical core portion 21 extending concentrically with the central axis, and a disk-like shape protruding at both ends of the core portion 21. The end surface members 22, 22, rod-shaped surface members 23, 23... Arranged along the generatrix direction so as to form a substantially cylindrical shape by connecting the outer peripheral portions of the end surface members 22, 22, and the core portion 21 and a shaft member 24 provided integrally therewith. Here, the surface members 23, 23... Are disposed at intervals in the circumferential direction, and through holes 25, 25,... Through which the transport material M is substantially larger than the granular transport material M are formed. Further, the outer surface of the core portion 21 and the inner surface of each of the surface members 23, 23. Further, with respect to the generatrix direction, the center portion of each surface member 23, 23... Has a middle height, and the center portion, the center portion of the core portion 21 and the reinforcing material 26 (disc-shaped reinforcing material in this embodiment) are connected. is there. Further, a part of the surface members 23, 23 are fitted on the outer periphery of the reinforcing material 26 so that the reinforcing material 26 does not directly contact the belt 1.
[0022]
In this embodiment, tension springs are used as the springs 14 and 15 as the urging means, but compression springs can also be used. Moreover, although the 1st spring is provided in the both sides of a belt conveyor, it can also be provided only in one side. The same applies to the second spring.
[0023]
【The invention's effect】
As is apparent from the above description, according to the present invention, the deposits on the drive roller can be removed directly and efficiently. Therefore, it is possible to prevent the conveyor belt from being displaced, to reduce the wear of the belt, and to prevent the work itself from being stopped.
[Brief description of the drawings]
FIG. 1 is a plan view of an example of a belt conveyor.
FIG. 2 is a front view thereof.
FIG. 3 is an enlarged view of a main part thereof.
FIG. 4 is a schematic front view of a belt conveyor provided with a scraper device according to the present invention.
FIG. 5 is an enlarged front view of an essential part thereof.
FIG. 6 is a plan view thereof.
FIG. 7 is an enlarged view of a scraper according to the present invention.
FIG. 8 is an enlarged view of a main part of the belt conveyor after the belt is replaced.
FIG. 9 is a perspective view of a preferred driven roller.
FIG. 10 is a schematic diagram showing the relationship between the driven roller and the belt.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Conveyor belt (endless belt), 2 ... Drive roller, 3 ... Driven roller, 4 ... Guide roller, 5 ... Support frame, 7 ... Motor adjustment bolt, 8 ... Bearing, 11 ... Scraping member, 12 ... Swing shaft , 13 ... lever, 14 ... first spring, 15 ... second spring, 16 ... long hole.

Claims (2)

An endless belt is wound between a driving roller and a driven roller that are rotatably supported by a supporting frame, respectively, and the driving roller is movable with respect to the supporting frame along the longitudinal direction of a belt conveyor. In the conveyor
A scraping member for scraping off deposits on the outer peripheral surface by abutting along the generatrix direction of the outer peripheral surface of the drive roller, and a scraping member integrated with the scraping member. And a swing shaft for supporting the
The scraping member is swingable about the swing shaft in a direction in which a contact force with respect to the outer peripheral surface of the drive roller is increased, and the swing shaft together with the scraping member is the drive roller. it is movable along the longitudinal direction of a moving direction,
A first urging means for urging the oscillating shaft in the longitudinal direction, which is the moving direction of the drive roller, and a direction in which the contact force of the scraping member is increased; and the scraping about the oscillating shaft. A scraper device for a belt conveyor, comprising: a second urging unit that oscillates the take-up member and urges the take-up member in a direction in which the contact force is increased. The support frame has both side portions frame, forming the longitudinal direction along the long hole in these sides the frame respectively, are inserted through the pivot shaft to these elongated holes, at least one end of said pivot shaft A lever is integrated into the part, and a first tension spring constituting a first urging means is provided between the swing shaft or the lever and the side frame, opposite to the side where the first tension spring is disposed. The scraper device for a belt conveyor according to claim 1 , further comprising a second tension spring that constitutes a second urging unit between the lever and the side frame.

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