JPH11334825A - Frictional driving device of catenary conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the limit of the conveying distance and to reduce the tensile force of a belt by supporting a side edge portion of a conveyor belt by the rollers and rotating the rollers for dispersively driving the conveyor belt. SOLUTION: The supporting rollers 24 of the supporting portions (driving portion) mounted at specific intervals are rotated and driven by the rotating mechanisms 27 to move a conveyor belt 10 contacted with the supporting rollers 25. This conveyor belt 10 receives an article to be conveyed l in a state that it is opened flat at a carrying-in portion, and is formed into the shape of waterdrop by fitting its both side edges 11 at a conveying portion so that the article to be conveyed l can be conveyed in a wrapped state. Whereby the load can be alloted in the supporting portions comprising the rotating mechanisms 27 for dispersively driving the conveyor belt 10, the tensile force of the belt can be reduced, the length of the conveyor belt 10 (conveying path) can be elongated as desired, and the force acting on the supporting rollers 25 can be reduced. Further the output of the rotating mechanisms 27 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving device for a conveyor which wraps and conveys a conveyed object by forming both ends of an endless conveyer belt into a water droplet shape.

[0002]

2. Description of the Related Art In general, for example, when driving a trough-type flat belt conveyor, the belt is driven by a rotating mechanism provided at one end or both ends of the conveyor or in the middle of a return belt. I have.

[0003]

However, in the conventional conveyor driving method, when the machine length of the conveyor is increased, the driving force is increased accordingly, and the strength of the belt becomes a problem. For this reason, the length of the conveyor cannot be too long, and is generally 1000 m or less. By the way, the present inventors, for example, when transporting coal unloaded at a port to a thermal power plant, even if there is a curved portion in the transport path, a new conveyor that can be transported over a long distance by one conveyor Catenary conveyor was developed. This catenary conveyer is a conveyer that wraps and conveys a conveyed object by forming both ends of an endless conveyer belt into a water droplet shape, and supports the side end of the conveyer belt using a catenary. is there. Then, in this catenary conveyor, when the conventional driving method of the conveyor is adopted, the belt driving force increases as described above with long-distance conveyance,
A horizontal force commensurate with the driving force acts on the support point, and a large amount of force is applied to the support roller, so that the entire conveyor equipment becomes large.

[0004] The present invention has been made in view of the above circumstances, and by driving the rollers at the conveyor support point, it is possible to carry out distributed driving, and it is possible to eliminate the limitation on the transport distance of one conveyor. Further, it is an object of the present invention to provide a friction drive device for a catenary conveyor that can reduce the belt tension, can reduce the force acting on the roller at the support point, and can easily and at low cost. I do.

[0005]

According to a first aspect of the present invention, a water drop is formed by joining both end portions of an endless transport belt.
A conveyor that wraps and conveys the conveyed object, and supports a side end of the conveyor belt with a roller,
By rotating these rollers, the conveyor belt is driven in a distributed manner. According to the first aspect of the present invention, the rollers that support the side end portions of the conveyor belt are driven to rotate, and the conveyor belt is conveyed. Drive dispersed. According to a second aspect of the present invention, an overhang is provided at a side end of the conveyor belt, and a lower surface of the overhang is a contact surface with a roller. According to the second aspect, the roller is brought into contact with the lower surface of the overhanging portion provided at the side end of the transport belt, so that the transported object wrapped inside the water-drop-shaped transport belt is moved by the roller. Convey smoothly while hanging. According to a third aspect of the present invention, a core such as a wire rope or carbon fiber is provided at a protruding portion at the side end of the conveyor belt. According to the third aspect, the high-strength core provided at the side end portion of the conveyor belt extends the support interval within the range permitted by the core strength, and reduces the number of rollers for supporting and conveying the conveyor belt. Reduce.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a driving section of a catenary conveyor showing one embodiment of the present invention, FIG. 2 is an image view of a mountain section when the catenary conveyor is applied to a system for transporting sediment deposited on a dam, and FIG. FIG. 4 is a perspective view of a transport section of the catenary conveyor, FIG. 5 is a perspective view of the support section of the catenary conveyor, and FIG. 6 shows another example of the support section of the catenary conveyor. FIG. 7 is a perspective view of a driving support roller, and FIG. 8 is a perspective view of a side roller. 1 to 6, reference numeral 10 denotes an endless transport belt having flexibility like a rubber belt. Overhang portions 12 are formed at both end portions 11 of the transport belt 10, and a high-strength core 13 such as a wire rope or carbon fiber is mounted inside the overhang portion 12. Then, the conveyor belt 10
In the carrying-in part for receiving the product and the carrying-out part for paying out the conveyed article 1, the conveying part is opened in a flat belt shape. , And conveys the article 1 in a wrapped manner.

In the transport section of the catenary conveyor, support sections 20 for the transport belt 10 are provided at appropriate intervals. The support portion 20 is provided on the upright supporting column 2.
1, a support arm 22 provided at the upper end of the column 21 so as to protrude in the horizontal direction, and a forward and return transport belt 10 provided at a lower portion of the support arm 22.
, And a pair of left and right side rollers 24 and a support roller 25 rotatably provided inside the roller mounting portion 23. Each of the side rollers 24 comes into contact with the side surface 14 of each of the projecting portions 12 of the water-conveying belt 10 to support and guide the conveying belt 10 from right and left. And this side roller 24
Is rotatably supported by a mounting member 26 as shown in FIG.

Further, a lower surface 15 connected to the side surface 14 of each overhang portion 12 of the conveyor belt 10 is an inclined surface which is inclined downward as it approaches the center line of the conveyor belt 10. The support rollers 25 are installed so as to be inclined such that their outer peripheral surfaces come into contact with the lower surface 15 of the overhang portion 12.
Are pressed against each other and come into close contact with each other. Further, in the support portions 20 (drive portions) at predetermined intervals (for example, every other portion) of the support portions 20, a rotation mechanism (motor) 27 is connected to the support roller 25 as shown in FIGS. Have been. The support roller 25 is rotatably supported by a mounting member 28 (see FIG. 7).

In the catenary conveyor configured as described above, the support roller 25 of the support section 20 (drive section) is rotated by a rotation mechanism 27 at predetermined intervals, so that the support roller 25 comes into contact with the support roller 25. Conveyor belt 1
Transfer 0. In this state, when the transported article 1 is thrown into the transport belt 10 in the loading section that is open in a flat belt shape, the transported article 1 is transported along with the transport of the transport belt 10. Then, in the conveyance section in the middle of the conveyance, the both end portions 11 of the conveyance belt 10 are put together to form the conveyance belt 10 into a water droplet shape, and the conveyed article 1 is conveyed by the conveyance belt 10.
It is wrapped inside and transported. In this case, since the load is shared and the transport belt 10 is dispersed and driven in the support section 20 (drive section) having the rotation mechanism 27, the belt tension can be reduced, and the length of the transport belt 10 can be reduced. The length (for example, 40 km) of the length (for example, 40 km) can be increased, and the force acting on the support roller 25 can be reduced. In addition, the output of each rotation mechanism 27 can be small, and the structure of each rotation mechanism 27 can be simple and at low cost.
Further, in each support portion 20, the support roller 25 is
Because it supports the upper part (side end part 11) of the conveyor belt 10,
The transport belt 10 and the transported article 1 between the support portions 20 hang down in a catenary shape. Therefore, the own weight of the transport belt 10 and the transported object 1 between the support portions 20 are supported by the strength of the core 13 of the overhang portion 12 of the transport belt 10 on the same principle as that of the suspension bridge. Thereby, the installation interval (catenary span) of the support portions 20 can be increased (for example, 10 m or more) within a range permitted by the strength of the core body 13 of the transport belt 10, and the number of the support rollers 25 is significantly reduced. be able to.

[0010] Then, the conveyed article 1 conveyed to the unloading section together with the transfer of the conveyer belt 10 is smoothly discharged by the transport belt 10 being opened in a flat belt shape at the unloading section. The transport belt 10 that has carried out the transported object 1 returns to the loading section along the return transport path.
In the present embodiment, the transport belt 10 has been described as being integrated up to the overhang portion 12, but the invention is not limited to this. As shown in FIG. May be connected to the belt main body 17 that houses the belt. In this embodiment, the case where the sediment deposited in the dam is carried out has been described. However, the present invention is not limited to this, and the so-called unloading coal system or a steel mill that transports coal discharged from a port to a thermal power plant is used as a raw material. Can be widely applied when transporting. In addition, among the support portions 20, the support portion 20 for transferring the transport belt 10 is provided.
The (drive units) may be arranged on all the support units 20 installed at a predetermined interval.
Alternatively, every other support section 20 may be a drive section. In short, as long as the transfer of the conveyor belt 10 is not hindered, the installation intervals of the drive units can be arbitrarily selected.

[0011]

According to the first aspect of the present invention, the rollers for supporting the side ends of the conveyor belt are driven to rotate and the conveyor belt is conveyed. Distributed driving can be performed for each section. Therefore, it is possible to eliminate the limitation on the transport distance of one conveyor, to reduce the belt tension, to reduce the force acting on the roller at the support point, and to make the driving device simple and low. Can be done at cost. According to the second aspect of the present invention, the roller is brought into contact with the lower surface of the overhanging portion provided at the side end portion of the transport belt, so that the transported object wrapped inside the water-drop-shaped transport belt can be removed by the roller. It can be transported smoothly while hanging. According to the third aspect of the present invention, the high-strength core provided at the side end portion of the conveyor belt can widen the support interval within a range permitted by the strength of the core, and supports and conveys the conveyor belt. The number of rollers can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a driving section of a catenary conveyor showing one embodiment of the present invention.

FIG. 2 is an image diagram of a catenary conveyor.

FIG. 3 is a sectional view of a supporting portion of the catenary conveyor.

FIG. 4 is a perspective view of a transport unit of the catenary conveyor.

FIG. 5 is a perspective view of a support portion of the catenary conveyor.

FIG. 6 is a perspective view showing another example of the support portion of the catenary conveyor.

FIG. 7 is a perspective view of a driving support roller.

FIG. 8 is a perspective view of a side roller.

[Description of Signs] 1 Conveyed object 10 Conveyor belt 11 Side end portion 12, 16 Overhang portion 13 Core body 15 Lower surface (inclined surface) 25 Support roller 27 Rotation mechanism (motor)

Claims (3)

[Claims] 1. A conveyor that wraps and conveys a conveyed object by joining both end portions of an endless conveyance belt to form a water drop, and supports the side end portion of the conveyance belt with a roller. A friction driving device for a catenary conveyor characterized in that the conveyor belt is driven in a distributed manner by rotating the belt. 2. The catenary conveyor friction drive device according to claim 1, wherein an overhang is provided at a side end of the conveyor belt, and a lower surface of the overhang is a contact surface with a roller. 3. The friction drive device for a catenary conveyor according to claim 2, wherein a core body such as a wire rope or carbon fiber is provided at a protruding portion at a side end of the conveyor belt.