JPH09315542A - Conveying belt tension device of grain conveying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate adjustment of a stretch of a conveying pelt by completely sealing elongated holes provided on a bearing part of a pulley of a conveying case, eliminating leakage of grains or dust from the bearing part of the pulley, and smoothing the sliding operation of a slide base to which bearings of the pulley are attached. SOLUTION: A conveying belt to which many buckets are attached is stretched between an upper pulley supported on the upper end of a conveying case 2 and a lower pulley 4 supported to the lower end. Elongated holes for displacing the lower pulley 4 in the tension direction of the conveying belt 6 is formed on a supporting part 7 of the lower pulley 4 of the conveying case 2. Slide bases 10 to which bearings 11 of the pulley 4 are attached are mounted on slide guide parts on the outer wall surfaces on which the elongated holes of the conveying case 2 are formed by pinching sealing bodies made of cushion materials. The surfaces of the sealing body to be brought in contact with the slide guide parts of the conveying case 2 are constituted of sliding materials.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain conveying machine in which a conveyor belt having a large number of buckets is suspended between pulleys that are respectively supported at the upper and lower ends of a conveyor case. The present invention relates to a conveyor belt tensioning device for maintaining a state.

[0002]

2. Description of the Related Art A grain transporter having a transport belt having a large number of buckets suspended between upper and lower pulleys pivotally supported on the upper and lower ends of a transport case carries in and out grains in a grain preparation device or the like. Widely used in. And in this type of grain transporter, it is essential that the transport belt is always kept in an appropriate tension state in order to smoothly transport the grain by the bucket. Is equipped with a conveyor belt tensioning device that vertically adjusts the axial position of the upper pulley or the lower pulley (see Japanese Utility Model Laid-Open No. 3-125719).

[0003]

Conventionally, in this type of grain transporter, as described in Japanese Utility Model Laid-Open No. 3-125719, a long hole is provided in the shaft support of the pulley of the transport case. The conveyor belt tensioning device has a structure in which the bearing mounting plate of the pulley is attached to the outer wall surface of the transport case with a gap blocking plate sandwiched in between. Since it is a thing of not only can not completely prevent the leakage of grains and dust from the long holes,
Dust that leaks from the long holes gets stuck between the gap closing plate and the transport case and solidifies over time, preventing smooth sliding of the bearing mounting plate of the pulley and making it difficult to adjust the tension of the transport belt. Has been pointed out.

Therefore, the present invention is intended to solve the above-mentioned conventional problems, and a seal made of a cushion material is provided between the outer wall surface of the carrying case and the slide base on which the bearing of the pulley is mounted. Since the stopper body is sandwiched and the surface of the sealing body that contacts the outer wall surface of the transport case is made of a sliding material that does not impair the sealing of the outer wall surface of the transport case by the cushion material, By completely sealing the long hole provided in the shaft support of the pulley of the case, it is possible to eliminate the leakage of grains and dust from the shaft support of the pulley, and moreover, the sliding operation of the slide base with the pulley bearing attached. SUMMARY OF THE INVENTION It is an object of the present invention to provide a conveyor belt tensioning device for a grain conveyor that can smoothly adjust the tension of the conveyor belt.

[0005]

In order to achieve the above object, a conveyor belt tensioning device of a grain conveyor according to the present invention has a large number of buckets mounted between pulleys axially supported at the upper and lower ends of a conveyor case. In a grain transporter configured by suspending a transport belt, the shaft support of the pulley of the transport case,
An elongated hole for displacing the pulley in the tension direction of the conveyor belt is formed, and a slide base with pulley bearings attached to the outer wall surface of the conveyor case with the elongated hole formed is conveyed with a sealing body made of cushioning material sandwiched between them. Sliding in the belt tension direction so that the surface of the sealing body made of the cushion material that contacts the outer wall surface of the transport case does not impair the sealing of the cushion material with the outer wall surface of the transport case. It is characterized by being composed of a material.

According to the present invention, in the above structure, a recess is formed on the surface of the slide base corresponding to the carrying case, the cushion material is fitted in the recess, and the sliding material is integrally attached to the surface of the cushion material. It is preferable to wear it to form a sealed body.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1, reference numeral 1 is a grain conveyor for lifting and conveying grains. The grain transporter 1 is configured by suspending a transport belt 6 having a large number of buckets 5 mounted between an upper pulley 3 and a lower pulley 4, which are axially supported at upper and lower ends of a transport case 2, respectively. The pulley 3 is rotationally driven by a transmission mechanism (not shown).

At the lower part of the carrying case 2 of the grain carrying machine 1,
A shaft support 7 of the lower pulley 4 is configured. As shown in detail in FIGS. 2 to 4, the shaft support portion 7 is provided with vertical long holes 9 in vertical slide guide portions 8 formed on both side walls of the transport case 2 and is guided by the slide guide portions 8. The lower pulley 4 is axially supported by the slide base 10 which is vertically slidable. The long hole 9 is for vertically displacing the lower pulley 4 in order to bring the conveyor belt 6 into a proper tension state. A bearing 11, which is a bearing, is attached to the slide base 10, and the lower pulley 4 is axially supported by the bearing 11.

Reference numeral 12 denotes a vertical displacement adjusting mechanism having a screw structure. The slide base 10 has a vertical displacement adjusting mechanism 12.
It is connected to. The vertical displacement adjusting mechanism 12 vertically displaces the slide base 10 by its rotating operation,
The conveyor belt 6 is held in an appropriate tension state.

A slide base 10 which constitutes the shaft supporting portion 7.
As shown in FIG. 5, a concave portion 13 is formed on the inner side corresponding to the carrying case 2, a cushion material 14 is fitted in the concave portion 13, and a slip material 1 is attached to the surface of the cushion material 14.
5 is attached to the inside of the slide base 10 to form the sealing body 16
Is composed. Cushion material 1 forming the sealing body 16
4 has a thickness slightly protruding from the recess 13 of the slide base 10, and the sliding member 15 attached to the surface thereof is bulged from the inner end 17 of the slide base 10 to form the sealing body 1.
6 has good cushioning properties on the inner surface of the slide base 10. The slide base 10 is connected to the vertical displacement adjusting mechanism 12 by a connecting rod 18 attached thereto.

The slide base 10 is made of metal or hard plastic. The cushion material 14 is styrofoam (product name: super seal), and the sliding material 15 is plastic having excellent flexibility and slipperiness (product name: New light) etc.

As described above, in the sealing body 16, the sliding material 15 for covering the surface of the cushion material 14 is made of plastic having high flexibility and slidability. The surface contacting the slide guide portion 8, which is the outer wall surface of the, does not impair the sealing with the slide guide portion 8 by the cushion material 14 even if the slide material 15 is interposed, and the long hole 9 is completely sealed. Thus, the grain and dust from the long hole 9 are completely prevented from leaking.

That is, if the slide base 10 to which the bearing 11 is attached is fixed to the slide guide portion 8 of the carrying case 2, the elongated hole 9 is formed by the sealing body 16 having a cushioning property.
Is completely sealed, but in order to adjust the tension of the conveyor belt 6, after displacing the slide base 10 in the vertical direction,
Even when the slide base 10 is fixed again, the sealing by the cushioning property of the sealing body 16 is not impaired at all, even though the sliding member 15 is interposed, and therefore the sealing is completed again. Moreover, since the sealing body 16 has good slidability with respect to the sliding guide portion 8 of the transport case 2 by the sliding member 15, it is easy to adjust the tension of the transport belt 6 by the vertical displacement of the cushion base 10. It can be carried out.

In the illustrated embodiment, an example in which the conveyor belt tensioning device according to the present invention is provided in the lower pulley 4 of the grain conveyor is shown, but it may be provided in the upper pulley 3. It can also be provided on both the upper pulley 3 and the lower pulley 4.

[0015]

According to the conveyor belt tensioning device for a grain conveyor according to the present invention, a sealing body made of a cushion material is sandwiched between the outer wall surface of the conveyor case and the slide base on which the bearing of the pulley is mounted. In addition, since the surface of the sealing body that is in contact with the outer wall surface of the transport case is made of a sliding material that does not impair the sealing of the outer wall surface of the transport case by the cushion material, the shaft of the pulley of the transport case By completely sealing the long hole provided in the support part, it is possible to eliminate the leakage of grains and dust from the shaft support part of the pulley, and moreover, the sliding operation of the slide base equipped with the pulley bearing is carried smoothly. The effect that the tension of the belt can be easily adjusted is obtained.

[Brief description of drawings]

FIG. 1 is an overall side view showing a grain conveyor according to an embodiment of the present invention with a part thereof cut away.

FIG. 2 is an enlarged side view showing a part of FIG. 1;

FIG. 3 is a front view showing a part of FIG. 2 in a cutaway manner.

FIG. 4 is a schematic exploded perspective view of FIG.

FIG. 5 is an enlarged cross-sectional view showing a configuration of a slide base.

[Explanation of symbols]

 1 Grain Conveyor 2 Conveyor Case 3 Upper Pulley 4 Lower Pulley 5 Bucket 6 Conveyor Belt 7 Shaft Support 8 Sliding Guide 9 Long Hole 10 Slide Base 11 Bearing (Bearing) 12 Vertical Displacement Adjusting Mechanism 13 Recess 14 Cushion 15 Sliding Material 16 Sealing body 17 Inner end 18 Connecting rod

Claims (2)

[Claims] 1. A grain conveyor which comprises a conveyor belt having a large number of buckets suspended between pulleys which are rotatably supported at the upper and lower ends of the conveyor case. Forming a long hole for displacing the pulley in the tension direction of the conveyor case, and mounting the slide base with the bearing of the pulley attached to the outer wall surface of the conveyance case where the long hole is formed. The sliding member is mounted so that it can slide in the direction of tension, and the surface of the sealing body made of the cushion material that contacts the outer wall surface of the transport case is made of a sliding material that does not impair the sealing of the cushion material with the outer wall surface of the transport case. A conveyor belt tensioning device for a grain conveyor, characterized by being configured. 2. A recess is formed in a surface of the slide base corresponding to the carrying case, a cushion material is fitted in the recess, and a sliding material is integrally attached to the surface of the cushion material to form a sealed body. The conveyor belt tensioning device for a grain conveyor according to claim 1, which is configured.