JPH11189319A - Folding type carrier roller stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a roller from being dropped and a roller supporting part from being tilted at 90 deg. or more when the roller supporting part is made to fall in the change of the roller of a carrier roller stand. SOLUTION: A pressing plate 7 for pressing a crosspiece 19 of a roller supporting part 12 is provided on the belt conveyor higher side on a frame attaching plate 11 of a carrier roller stand, and a stopper 10 for preventing the roller supporting part 12 from being tilted at 90 deg. or more is provided in the position close to a hinge structure 9 provided on the belt conveyor lower side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable carrier roller stand for preventing a roller supporting portion from completely falling down when the roller supporting portion is lowered in order to replace a roller used for a belt conveyor. .

[0002]

2. Description of the Related Art Conventionally, a roller used in a carrier roller stand has to be replaced due to deterioration, breakage and the like after a certain period of use. In the case of the exchange,
The burden of the conveyor belt, the skirt rubber, etc. was required, and the replacement work was very difficult. Therefore, the carrier roller stand that supports the rollers can be separated into a conveyor frame and a roller support, and the roller carrier can be replaced. As a result, a space was provided between the conveyor belt and the rollers to facilitate replacement.

[0003] However, if the roller support is not firmly supported by hand or the like at the time of the exchange work, the 90
There was a danger that the roller would fall from the roller support at this time. Further, in order to prevent such a drop, it is necessary to work while supporting the roller and the roller supporting portion during the replacement operation, which hinders the efficient replacement operation of the roller.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it has been proposed to prevent a roller support portion from falling down by more than 90 degrees when the roller support portion is lowered, thereby making the roller replacement operation safer and more reliable. It can be done quickly and easily and aims to prevent damage to the rollers.

[0005]

A carrier roller stand for supporting a roller for smoothly moving a conveyor belt is provided.
In a retractable carrier roller stand that has a structure that can be separated into a conveyor frame and a roller support section and has a structure that allows the roller support section to be tilted, the roller support section is placed on the conveyor frame in a foldable carrier roller stand. A stopper is provided to limit the angle of inclination in the event of a collision. The shape of the stopper according to the present invention is not limited as long as the roller support portion is of a size that is stationary when it hits the stopper. The stopper is provided at a position close to the roller support on the conveyor frame. Thus, when the roller support section is lowered during roller replacement, the roller support section comes into contact with the stopper and stops at an angle of less than 90 degrees. Also,
The angle at which the roller support falls down and stops is 40 to 50 degrees
Although the degree is desirable, the angle is not limited to this, and any angle may be used as long as the roller does not drop from the roller supporting portion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic explanatory diagram of a belt conveyor including a conveyor belt 1, rollers 2, a hopper 3, a driving pulley 4, a tension pulley 5, a driven pulley 6, and the like. An object to be transported (for example, crushed stone) to the hopper 3 placed on the belt conveyor on the low side
And transport it to a higher place. A drive pulley 4 connected to a motor (not shown) is provided at a high place, a driven pulley 6 is provided at a low place, and an endless belt is supported between the pulleys 4 and 6 on both sides, and a roller for smoothly moving. 2 are arranged in tandem at intervals along the transport direction. A tension pulley 5 for tensioning the conveyor belt without slack.
Is disposed on the belt below the belt conveyor. Each of the rollers 2 that are cascaded is supported by a roller support portion 12 that is supported by a conveyor frame 18 disposed on both sides in the direction perpendicular to the transport direction (the width direction of the belt conveyor) along the transport direction. As shown in FIGS. 2 and 4, the roller support portion 12 is provided on both sides of the conveyor frame 1.
8 is composed of a horizontal member 19 having an inverted V-shaped cross section and four vertical members standing upright on the horizontal member 19 at an interval, and the two vertical members 14a on both sides are located in the middle. It is longer than the two vertical members 14b located, two of 14a are the same length, and two of 14b are also the same length. A notch 20 is formed at the upper end of each of the long members 14a, 14b, 14b, 14a.
The roller shaft 21 is fitted into the cutout portion 20 and is engaged so as to be able to be inserted and removed, so that each of the vertical members, that is, 14b and 14b, 14b and 14b, and 14b and 14a is provided one by one. , And one roller support unit 12 has a total of three rollers 2a, 2b,
Support 2a. Both rollers 2a, 2a are inclined downward toward the central roller 2b, and the central portion is lowered so that crushed stones to be conveyed do not drop from both sides of the belt conveyor during conveyance. The rollers 2a, 2a and the roller 2b have the same size (see FIG. 4).

As shown in FIG. 2, both ends of each cross member 19 are mounted on the conveyor frame 18 with a frame mounting plate 11 mounted on the conveyor frame 18 interposed therebetween. A hinge structure 9 for lowering the roller support portion 12 during replacement and a stopper 10 for preventing the roller support portion 12 from excessively tilting are provided. On the other hand, on the high side of the belt conveyor, the roller support portion 12 is moved during normal operation and stoppage of the belt conveyor. A holding plate 7 for stably holding the upright state is provided. The hinge structure 9 includes a shaft 17 having one end fixed to a cross member 19, the shaft inserted therein, and the frame mounting plate 1.
The hinge structure 9 allows the roller support portion 12 to be tilted on the lower side of the belt conveyor so as to be connected to the conveyor frame 18 via the frame mounting plate 11. I have. The stopper 10 protrudes opposite to each of the vertical members 14a on both sides at a position close to the low side of the shaft tube 16, and is disposed on the left and right frame mounting plates 11 in the transport direction of the carrier roller stand. , One each for a total of two. The protrusion length of this stopper 10 is
The vertical members 14a are set so that the vertical members 14a come into contact with each other when the 2 falls down at an inclination angle of 40 degrees to 50 degrees, and do not fall any further. The base plate 22 of the holding plate 7 has a frame mounting plate 1.
1 is fastened to the conveyor frame 18 with bolts 13 and nuts 8, and the tip 23 presses the slope at the high side of the cross member 19 having an inverted V-shaped cross section. When the roller support portion 12 is to be tilted, the fastening by the bolts 13 and the nuts 8 is loosened to release the pressing state on the cross member 19.

The bolt 13 and the nut 8 are loosened to release the pressing state on the cross member 19, and the roller support portion 12 is released.
When the roller is depressed, a space is formed between the conveyor belt 1 and the roller 2 like the roller 2 indicated by a dotted line in FIG. Therefore, the roller 2 can be replaced safely, quickly and easily without the need to artificially lift the heavy conveyor belt 1.

In the above embodiment, the stoppers 10 are provided one by one on the frame mounting plates 11 on both the left and right sides in the transport direction of the carrier roller stand. However, the present invention is not limited to this. May be. The mounting position is not limited to the lower side and the higher side of the belt conveyor, but is desirably provided on the opposite side of the belt conveyor in the conveying direction. In addition, although a belt conveyor that is conveyed from a low place to a high place is described as a belt conveyor, the present invention also includes a belt conveyor that conveys from a high place to a low place and a belt conveyor that conveys in a horizontal direction.

[0010]

According to the present invention, when replacing the roller, even if the roller supporting portion is tilted, the roller rests against the stopper provided on the frame mounting plate, so that the danger of the heavy roller dropping can be eliminated. Roller replacement can be performed very safely and easily without the need for manual support during the replacement.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of a belt conveyor showing an example to which the present invention is applied.

FIG. 2 is a perspective view showing an embodiment of the present invention.

FIG. 3 is a side view showing a use mode of the present invention.

FIG. 4 is a cross-sectional view of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor belt 2 Roller 10 Stopper 12 Roller support part 18 Conveyor frame

Claims (1)

[Claims] 1. A carrier roller stand for supporting a roller (2) for smoothly moving a conveyor belt (1) is configured so as to be separable into a conveyor frame (18) and a roller support (12). In the foldable carrier roller stand that facilitates the replacement of the roller (2) by enabling the tilting of the roller support (12), the tilt angle when the roller support (12) is tilted on the conveyor frame (18) is reduced. A retractable carrier roller stand provided with a restricting stopper (10).