JPH09221212A - Article loading chute for conveyor belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate attaching and detaching of a rubber seal plate and adjustment of its height, and easily lower the mounting position when the lower end of the seal plate is worn. SOLUTION: A seal plate 22 and a guide plate 21 vertically slidably in contact with the seal plate, are fixed on the outside surface of the side wall 16a of a chute 16. Plural toggle clamps 30, each of which consists of a toggle mechanism, an operating lever 35 for input and a pressing part 33a for output, are arranged at the upper part of the outer face of the side wall along the upper edge of the guide plate 21 so that the pressing part 33a can be advanced to and retracted from the rubber seal plate 22. Then, a presser plate 23 on which anti-slipping irregularities are formed, is interposed between the pressing part 33a and the rubber seal plate 22 so that the irregularities face on the rubber seal plate 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chute for throwing gravel, crushed stone, coal, coke, ore, etc., into a conveyor belt in bulk.

[0002]

2. Description of the Related Art A chute for charging a lump is provided on the loading side of a conveyor belt for transporting the powder or lump. FIG. 1 is a cross-sectional view showing an example of the loading device, in which a central spacer 12 is provided on a base 11 below a conveyor belt 10 which runs perpendicular to the plane of the drawing.
And a plurality of sleepers 14 bent downward in a convex shape via the columns 13 at the left and right ends are arranged side by side at a predetermined interval and straddle the plurality of sleepers 14 on the central horizontal portion and both side inclined portions. A plurality of carrier guides 15 (three in the illustrated example) are fixed in parallel with the conveyor belt 10, and the conveyor belts 10 are supported by these carrier guides 15 and run in a downward convex shape. It is like this. The carrier guide 15 is made of a long rectangular member made of shock-absorbing rubber, and is formed by laminating a coating layer 15a made of ultra-high molecular weight polyethylene thereon.

On the other hand, above the conveyor belt 10, a chute 16 for loading a lump or the like is provided, and rubber seal plates 17 are fixed to the left and right side walls 16a of the lower end discharge port thereof, and the chute 16 is put into the conveyor belt 10. The lumps 18 (for example, quarry) thus formed are prevented from being ejected to the outside from the gap between the conveyor belt 10 and the side wall 16a. However, conventionally, since the rubber seal plate 17 is fixed to the side wall 16a by bolting, it is troublesome to adjust the height of the seal plate 17, and if the lower end of the seal plate 17 is worn, loosen the bolt. Even when trying to lower the seal plate 17, adjustment work was extremely difficult due to corrosion of the bolts, adhesion of dust and the like.

[0004]

SUMMARY OF THE INVENTION The present invention makes it easy to adjust the height of the rubber seal plate and to easily adjust the mounting position when the lower end of the rubber seal plate is worn.

[0005]

[Means for Solving the Problem] The first means is a chute for throwing powdered particles or agglomerates in bulk into a conveyor belt which is supported and runs so that its cross section has a downwardly convex curved shape. A rubber seal plate is attached to the outer surfaces of the left and right side walls of the lower end discharge port to prevent the ejection of powder particles or agglomerates on the conveyor belt. A guide plate, which is vertically slidably in contact with one side of the plate, is fixed, and a plurality of a toggle mechanism, an input operation lever, and an output pressing portion are provided on the outer surface of the side wall along the upper edge of the guide plate. The toggle clamp is arranged so that the pressing portion moves forward and backward facing the rubber seal plate, and the pressing plate having a non-slip unevenness on one surface between the pressing portion and the rubber seal plate is uneven. Is suitable for rubber seal plates Characterized in that interposed. The pressing plate may be simply sandwiched between the pressing portion of the toggle clamp and the rubber seal plate, or may be fixed to the pressing portion. Further, it is preferable that its length extends over the entire length of the rubber seal plate.

In the above-mentioned article input sheet, the rubber seal plate is sandwiched between the pressing plate fixed to the pressing portions of the plurality of toggle clamps and the guide plate fixed to the side wall,
Moreover, since the non-slip unevenness is formed on the side of the pressing plate that contacts the seal plate, even if an external force such as hitting a lump or other loaded article hits the bottom of the seal plate in the sandwiched state, the toggle clamp The pressing portion does not retreat and the pressing plate does not loosen, and therefore the sealing plate does not fall off. However, when the operation lever of the toggle clamp is operated, the pressing portion retracts and the pressing plate opens with a small input operation, so that the seal plate can be attached / detached and the height can be adjusted. Since the guide plate is guided in the vertical direction when the seal plate is vertically displaced, the bottom line of the seal plate is not inclined and the height can be easily adjusted.

The second means is a guide device for supporting the conveyor belt so that its cross section has a downwardly convex curved shape, and at least a portion which is in contact with the side edge of the conveyor belt has a long shock absorbing direction in the direction of the conveyor belt. Since the carrier guide with the coating layer of ultra-high molecular weight polyethylene is placed on the upper surface of the rectangular material made of rubber for use as a roller, as in the case of arranging multiple rollers parallel to the width direction of the conveyor belt, The edge of the conveyor belt does not bend downward between the rollers and the gap between the seal plate and the conveyor belt becomes constant, which makes it easy to prevent the ejection of the loaded articles. The parts other than the side edges of the conveyor belt are
It may be supported by either a carrier guide similar to the above or a guide roller in the width direction.

The third means is one in which the lower part of the rubber liner that covers the inner surface of the side wall of the chute is projected downward from the lower end of the side wall of the chute, and is supported by a reinforcing iron plate leaving a skirt so as to incline inward. As such, the articles to be loaded are loaded into the central portion of the conveyor belt, which reduces meandering and spilling of the conveyor belt. Further, since the reinforcing iron plate does not exist at the hem at the lower end of the rubber liner, even if the hem of the rubber liner contacts the conveyor belt, the conveyor belt is not damaged.

The fourth means is to mix ultra-high molecular weight polyethylene powder or short fibers in the hem of the rubber seal plate, so that even if the hem may come into contact with the conveyor belt, the frictional resistance is increased. Less, wear on the skirt of the seal plate and the surface of the conveyor belt is reduced, and the life of the seal plate and the conveyor belt is extended. The preferred amount of ultra high molecular weight polyethylene powder or short fibers is:
It is 50 to 100 parts with respect to 100 parts of rubber, and the preferable rubber hardness is 50 to 80 degrees of JIS-A.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 2, a conveyor belt 1 is shown.
As shown in FIG. 1, 0 travels while being supported by a plurality of carrier guides 15 parallel to the lengthwise direction of the conveyor belt 10 in a downward convex curved shape. Incidentally, 15a is a coating layer made of high molecular weight polyethylene. Reference numeral 16 is the chute and 16a is a side wall. The side wall 16a is provided vertically to the left and right of the lower end discharge port of the chute 16. The inner surface of the chute 16 has a reinforcing iron plate 16
b and the rubber liner 16c, and the lower portion of the rubber liner 16c that covers the side wall 16a projects downward from the lower end of the side wall 16a and is supported by the reinforcing iron plate 16b so as to incline inward. However, the lower end of the reinforcing iron plate 16b stops slightly above the hem of the rubber liner 16c, and the hem of the rubber liner 16c is made of only rubber.

A guide plate 21 is provided below the outer surface of the side wall 16a.
Are fixed by welding, and a plurality of rubber seal plates 22 formed in a rectangular plate shape with a rubber such as natural rubber, synthetic rubber, urethane rubber or the like are arranged on the outer surface of the guide plate 21 in a row in the front-rear direction. The rubber seal plate 22 is crimped to the guide plate 21 by a plurality of toggle clamps 30 arranged in a line above the rubber seal plate 22 via a pressing plate 23 extending over the entire length of the rubber seal plates 22. . However, on the outer surface of the guide plate 21, the protrusion 21 in the vertical direction is formed.
A large number of a (see FIG. 5) are provided at predetermined intervals, while the rubber seal plate 22 has a large number of vertically extending vertical holes into which the above-mentioned ridges 21a can be slidably fitted. 22a are provided at the same intervals as the ridges 21a, and the ridges 21a of the guide plate 21 are fitted into the vertical holes 22a. Then, the adjacent portion 22b of the rubber seal plate 22 is overlapped and spliced so that no gap is generated by the intermittent splicing.

The toggle clamp 30 (see FIG. 2) includes a bracket 31 fixed to the side wall 16a of the chute 16, a left and right swingable holding lever 32 hanging from the tip of the bracket 31 with a tip pin 31a, and the above-mentioned. An operation lever 35, which is vertically swingable and is connected to a base pin 31b and is orthogonal to the pressing lever 32, is provided at an obliquely lower portion closer to the base than the tip pin 31a. Then, a headed bolt 33 is fixed to the lower end of the pressing lever 32 with the bolt head 33a facing the side wall 16a, and the bolt head 33a constitutes a pressing portion for output. A handle 36 for input is connected to the tip of the operation lever 35.

Details of the toggle clamp 30 are shown in FIGS. That is, the bracket 31,
The pressing lever 32 and the operating lever 35 are each composed of a pair of plate members facing each other in the vertical direction in FIG. Then, in FIG. 3, the pressing lever 32 is arranged at a portion where the vertical pressing lever 32 intersects with the horizontal operating lever 35.
Similarly, one end of a pair of opposed short links 39 is connected by a first connecting pin 38a, and the other end of the short link 39 is connected by a second connecting pin 38b to a portion of the operation lever 35 near the tip. At this time, the length of the short link 39 is set so that the base pin 31b, the first connecting pin 38a, and the second connecting pin 38b are aligned on a straight line in the horizontal direction, and the lower center of the pair of short links 39 is connected. The connecting portion 39a is in contact with the pressing lever 32 to form a stopper, and the pressing lever 32, the operating lever 35, and the short link 39 form a toggle mechanism.

Therefore, when the handle 36 at the tip of the operating lever 35 is swung up and down, the lower end of the pressing lever 32 swings left and right, and even if the force applied to the handle 36 is small, the lower end of the pressing lever 32 is remarkably moved. Although a large force acts, the pressing lever 32 does not move even if a large horizontal external force is applied to the lower end of the pressing lever 32. In FIG. 3, 34 is a lock nut for fixing the bolt 33 to the lower end of the pressing lever 32, and the surface of the pressing plate 23 fixed to the bolt head 33a has a saw-tooth cross section for preventing slippage of the rubber seal plate 22. A ridge 23a having a shape is provided.

In the above structure, when the handle 36 at the tip of the operating lever 35 is pushed down to the illustrated state, the base pin 31b, the first connecting pin 38a and the second connecting pin 38.
b are arranged along a straight line in the horizontal direction, and the rubber seal plate 22
Is a pressing plate 23 at the lower end of the pressing lever 32 and the chute 1
It is sandwiched between the six side plates 16a with a large force. Moreover, unless the operation lever 35 is directly pushed up, even if vibration or other external force is applied to the rubber seal plate 22 and the pressing lever 32, the pressing force of the pressing plate 23 does not loosen.
Therefore, the rubber seal plate 22 does not fall off.
When the handle 36 is lifted by hand and the operation lever 35 is rotated upward, the pressing lever 32 swings outward, and the pressing force of the pressing plate 23 against the rubber seal plate 22 is relaxed. It is easy to attach and detach the seal plate 22 and adjust the height.

In this embodiment, the pressing plate 23 is provided with the ridge 23a having a serrated cross section, and the ridge 23a cuts into the surface of the rubber seal plate 22 during the above-mentioned clamping.
The rubber seal plate 22 is more unlikely to fall off. Further, since the lower end of the rubber liner 16c provided on the inner surface of the chute 16 extends downward from the lower end of the side plate 16a and is inclined inward, the lumps 18 such as quarry introduced from above the chute are located at the center of the conveyor belt 10. Section, which reduces the meandering and spillage of the conveyor belt 10,
In addition, the above-mentioned lumped body 18 is the rubber seal plate 22.
Since the rubber seal plate 22 is not directly contacted with the rubber seal plate 22, the life of the rubber seal plate 22 is extended, and the edge of the lower end of the rubber liner 16c is formed of only rubber, so that the edge of the rubber liner 16c does not damage the conveyor belt 10.

Further, in this embodiment, the conveyor belt 10 is provided with a large number of carrier guides 1 parallel to the length direction thereof.
5, the conveyor belt 10 is supported in a downwardly convex curved shape, and in particular, since the left and right edges of the conveyor belt 10 are kept in a straight line parallel to the carrier guide 15, it is supported by a plurality of guide rollers parallel to the width direction of the conveyor belt 10. The side edges of the conveyor belt 10 do not sag between the guide rollers as would be the case, so that the ejection of the mass 18 is further reduced. Since the coating layer 15a made of ultra-high molecular weight polyethylene is received on the surface of the carrier guide 15, damage to the conveyor belt 10 is reduced. Also,
The rubber seal plate 22 is provided with a plurality of vertical holes 22a, and the ridges 21a of the guide plate 21 are slidably fitted in the vertical holes 22a, so that the height of the rubber seal plate 22 can be adjusted. At this time, the lower edge of the rubber seal plate 22 is kept parallel to the conveyor belt 10, which facilitates fine adjustment of the height.

[0018]

According to the first aspect of the present invention, since the rubber seal plate on the side wall at the lower end of the chute is fixed by the toggle clamp, the rubber seal plate does not loosen and fall off during use, and its attachment / detachment and height Adjustment can be easily performed as needed, and the lower edge of the rubber seal plate can be kept parallel to the conveyor belt when adjusting the height, making fine adjustments easy. It is possible to always suppress the amount of lumps ejected from the gap to the minimum amount.

According to the second aspect of the present invention, the ejection amount of the lumps can be particularly reduced as compared with the case where the conveyor belt is supported by the guide rollers. According to the invention as set forth in claim 3, the lumps can be collected and loaded in the central portion of the conveyor belt, so that the meandering and spilling of the conveyor belt are reduced, and the conveyor belt is provided at the hem of the rubber liner. Will not be damaged. Further, according to the invention as set forth in claim 4, even if the hem portion of the rubber seal plate is brought into contact with the surface of the conveyor belt, the conveyor belt is not damaged, so that the rubber seal plate and the conveyor belt are not damaged. It is possible to improve the sealing property and further reduce the ejection of the lumps.

[Brief description of drawings]

FIG. 1 is a sectional view of an article input chute of a conveyor belt.

FIG. 2 is a sectional view showing the embodiment.

FIG. 3 is an enlarged front view of the toggle clamp.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 2;

[Explanation of symbols]

10: conveyor belt, 15: carrier guide, 15
a: coating layer, 16: chute, 16a: side wall, 16b:
Reinforced iron plate, 16c: rubber liner, 17, 22: rubber seal plate, 21: guide plate, 21a, 23a: ridge, 2
2a: vertical hole, 22b: adjacent portion, 23: pressing plate, 30:
Toggle clamp, 31: Bracket, 32: Holding lever, 33: Bolt, 33a: Bolt head (pressing part), 3
5: operating lever, 36: handle, 38a, 38b: connecting pin, 39: short link, 39a: short link connecting portion (stopper).

Claims (4)

[Claims] 1. A chute for throwing powdered particles or agglomerates into a conveyor belt that is supported and travels so as to have a downwardly convex curved shape, and has left and right side walls of a lower end discharge port thereof. In the case where a rubber seal plate is attached to the outer surface so as to prevent the ejection of powder or granules or lumps on the conveyor belt, the outer surface of the side wall is vertically slidably contacted with one side of the rubber seal plate. A guide plate is fixed, and a plurality of toggle clamps, each of which includes a toggle mechanism, an operation lever for input and a pressing portion for output, are attached to the upper outer surface of the side wall along the upper edge of the guide plate. It is arranged so as to face the seal plate and move forward and backward, and a pressing plate having a non-slip concave and convex on one side is interposed between the pressing part and the rubber seal plate so that the concave and convex face the rubber seal plate. Characterized by Conveyor belt article loading chute. 2. The article introducing chute of the conveyor belt according to claim 1, wherein at least a side edge of the conveyor belt is used as a guide device for supporting the conveyor belt so that the cross section has a downwardly convex curved shape. An article feeding chute for a conveyor belt in which a carrier guide having a coating layer of ultrahigh molecular weight polyethylene provided on the upper surface of a rectangular member made of shock-absorbing rubber that is long in the direction of the conveyor belt is disposed in a supporting portion. 3. The conveyor belt article charging chute according to claim 1 or 2, wherein the lower part of the rubber liner covering the inner surface of the side wall of the chute projects downward from the lower end of the chute side wall and inclines inward. Conveyor belt article input chute supported by a reinforcing iron plate leaving the hem. 4. The conveyor belt article charging chute according to any one of claims 1 to 3, wherein an ultrahigh molecular weight polyethylene powder or short fibers are mixed in the hem of the rubber seal plate. Input shoot.