JPH0759446B2 - Belt cleaner mechanism mounting support device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting and supporting a belt cleaner mechanism for scraping and removing residual deposits on the surface of a conveyor belt.

[0002]

2. Description of the Related Art Conventionally, a belt cleaner mechanism and a device for mounting and supporting the mechanism have been disclosed, for example, in the technology disclosed in Australian Patent No. 528698, and in the Australian patents 449142 and 565417 previously proposed by the present applicant. The technique described in No. 1 is known.

In these prior arts, in the belt cleaner mechanism, cleaner units are arranged in a line on a straight line with respect to a frame made of pipe material. In each cleaner unit, a holding plate is supported by a cushion member made of an elastic material, and a scraper is provided at the tip of the holding plate. Both ends of the frame made of the pipe material are supported by brackets, and the scrapers of the cleaner units arranged in this state are pressed against the surface of the conveyor belt. The pair of brackets are attached and fixed to a part of the belt conveyor mechanism, for example, the frame or hopper of the conveyor.

In such a belt cleaner mechanism,
The frame is supported by a bracket so as to be vertically adjustable. For example, in the above-mentioned Australian Patent No. 528698, the bearing members fixed to both ends of the frame can be raised by the push bolts provided on the lower portion of the bracket. Further, in the above-mentioned Australian Patent No. 565417, the bearing member that supports both ends of the frame is screwed to the screw shaft rotatably provided on the bracket, and the bearing member can be raised and lowered by rotating the screw shaft. It is configured.

Therefore, when the belt cleaner mechanism is set on the conveyor belt, the aligned scrapers can be pressed against the surface of the belt at a predetermined pressure by adjusting the vertical position of the frame. That is, the scraper elastically contacts the surface of the belt through the elastic deformation of the cushion member, thereby scraping off the residual deposits on the surface of the belt.

[0006]

The scraper is rubbed against the surface of the belt and gradually worn. While the wear is slight, the scraper can be pressed against the belt surface following the restoration of the cushion member, but as the wear progresses, the elastic force of the cushion member decreases and the contact pressure of the scraper on the belt surface decreases. Becomes insufficient, and it becomes impossible to satisfactorily scrape the residual adhered matter on the belt surface.

Therefore, conventionally, generally, the belt cleaner mechanism is regularly maintained and inspected, and the frame is lifted and adjusted again on the bracket according to the wear condition of the scraper, and the scraper is moved to the belt surface in a predetermined manner. The current situation is that the adjustment work is performed so that they come into contact with each other under pressure.

However, periodically requiring such maintenance and inspection is not preferable from the viewpoint of cost, and is disadvantageous in that the operation of the belt conveyor must be temporarily stopped. The advent of a so-called maintenance-free device that does not require such adjustment work has been demanded.

Therefore, the present inventor has conducted extensive research and development utilizing his many years of experience, and as a result of repeating trial production and experiments, as a result, in order to enable the above-mentioned maintenance-free type as a mounting and supporting device of the belt cleaner mechanism. Have found that the present invention provides the best results.

Prior to the present invention, the present inventor has noted that the above-mentioned Australian Patent No. 528698 can also perform a maintenance-free function. In this Australian patent, a coil spring is interposed between a bearing member fixed to both ends of a frame and a push bolt provided at a lower portion of a bracket, and the push bolt is pushed up to compress the coil spring and thereby the bearing. It is configured to be lifted. Therefore, when the scraper wears due to the rubbing of the belt surface, the coil spring follows this wear and resiliently pushes up the bearing while lifting the belt cleaner unit together with the frame. You will be able to press.

However, as a result of diligent research and study by the present inventor, it was found that this Australian patent contains the following problems and cannot obtain a satisfactory result. .

That is, first, in the belt cleaner mechanism and its attachment support device, the residual adhered matter on the belt surface is scraped off by the scraper, and the fallen matter is poured and deposited. Therefore, in the structure in which the coil spring is exposed as in the Australian patent, the coil portion of the spring is clogged, and the elastic restoring function of the spring is easily lost. Further, depending on the material of the residual deposits on the belt surface scraped off by the scraper, the metal coil spring is easily corroded at an early stage, which is not satisfactory in terms of durability.

Secondly, in the case where the frame of the belt cleaner is lifted upward at both ends by the coil spring, the frame is supported movably in the vertical direction with a predetermined stroke and the frame can be raised over this stroke. Since the coil spring must be used, the device has a vertically long structure, which causes a problem that the device cannot be made compact.

Third, in the case of such a structure in which both ends of the frame are lifted upward, if the same lifting force is not applied to both ends of the frame, uniform pressure is applied to the entire scrapers aligned in a straight line. Can not be. In other words, when the lifting elastic forces at both ends of the frame are unbalanced, there is a problem that the scrapers arranged in a straight line are unevenly worn.

Fourthly, the applicant of the present invention rotates a scraper as a fulcrum by rotating the scraper as a belt cleaner mechanism, which will be described later, that is, by rotating the frame around the axis of the frame as a fulcrum. The market is provided with a belt cleaner mechanism in which the belt surface is pressed against the surface of a belt on a locus, but the technology as in the above-mentioned Australian patent cannot be applied to such a belt cleaner mechanism.

[0016]

The present invention enables a maintenance-free type device as described above in a mounting and supporting device for a belt cleaner mechanism, and
It was possible to solve the problems described above.

Therefore, according to the present invention, the attachment support device for the belt cleaner mechanism includes the bearing member 19 for rotatably supporting the frames 2, 43 of the belt cleaner mechanism.
A fixed bracket 13, a tension means 14 for urging the frame in the rotation direction, an actuation means 15 for activating the tension means, and an excessive rotation of the frame.
The tension means 14 is composed of an inner sleeve 23 for inserting and fixing the frame so that the frame can be inserted and removed, and is rotatably disposed, and the outer circumference of the inner sleeve is spaced from the inner sleeve 23. an outer sleeve 24 that is, is filled between the inner and outer sleeve consist vulcanization been bullet <br/> member 25. the inner sleeve 23 is pre
The extension 2 protruding laterally from the auster sleeve 24
6 is provided and the frame can be freely attached to and detached from the extension.
The fixing means 31 for fixing to the
The stopper lever 27 is projected in the direction, and the outer
Reeve 24 projects in the direction opposite to the stopper lever
A tension lever 28 protruding in the radial direction, and the actuating means 15 is provided on the bracket so as to be movable back and forth .
In addition , the stopper means 16 is attached to the bracket by an advancing / retreating adjustment member for forcibly moving the tension lever 28 in the rotation direction of the outer sleeve 24.
It is installed so that it can move back and forth, and it is biased by the elastic member
The striking inner sleeve 23 is opposed to the rotating direction of the inner sleeve 23.
It is characterized by comprising an advancing / retreating adjustment bolt facing the upper lever 27 .

[0018]

Embodiments of the present invention will be described in detail below with reference to the drawings.

(First Embodiment) In FIGS. 1 to 3,
The belt cleaner mechanism 1 has a plurality of cleaner units 3 arranged in a row in a pipe-shaped frame 2 in the axial direction. As shown in FIG. 2, the cleaner adheres to the surface of a belt 5 wound around a pulley 4. It is the composition of dropping. That is, in the cleaner unit 3, the mounting plate 7 and the holding plate 8 are integrally coupled and bonded with the cushion member 6 formed of rubber or the like interposed therebetween, and the arms 9 and 9 fixed to the holding plate 8 are extended upward. The scraper 10 is detachably attached to the tip of the arm. The mounting plate 7 of each cleaner unit 3 is detachably fixed to the mounting portion 11 of the frame 2 via bolts and nuts, whereby a plurality of cleaner units are aligned along the axis of the frame 2. This belt cleaner mechanism is the same as the one previously proposed by the applicant as Australian Patent No. 565417, and therefore detailed description thereof will be omitted.

The belt cleaner mechanism 1 includes a frame 2
Both ends of the are supported by the attachment support devices 12, 12 of the present invention. The pair of mounting support devices 12 and 12 are arranged symmetrically, but since they have the same configuration, one device 12
Only illustrated.

The mounting and supporting device 12 includes the frame 2
Bracket 13 for rotatably supporting the frame and the frame 2
The tension means 14 for urging the tension means 14 in the rotation direction, the operation means 15 for activating the tension means 14, and the stopper means 16 for preventing the frame 2 from excessively rotating.

The bracket 13 is a frame support 1
It is composed of a metal plate having an L-shaped cross section provided with 7 and a mounting portion 18. The mounting portion 18 is a part of a belt conveyor mechanism (not shown) with the frame support portion 17 arranged substantially horizontally,
For example, it is attached and fixed to the frame or hopper of the conveyor with bolts and nuts.

A bearing member 19 for rotatably supporting the frame 2 is installed on the frame support portion 17, and a bolt 20 is inserted through the frame support portion 17 from below (FIGS. 2 and 3). It is fixed by.
The bearing member 19 has a clevis-shaped shaft support portion 21 formed upward, and the upper opening of the shaft support portion is closed by a pin 22 while the frame 2 is rotatably held.

The tensioning means 14 includes an inner sleeve 23, an outer sleeve 24 which is arranged concentrically with the inner sleeve 23, and is arranged on the outer circumference of the inner sleeve 23 with a sufficient space therebetween. Elastic member 2 such as rubber interposed between the sleeves 23 and 24
It consists of 5 and.

The inner sleeve 23 has an extension 26 protruding laterally from the outer sleeve 24, and a stopper lever 27 is provided outside the extension 26. On the other hand, the outer sleeve 24 has a tension lever 28 protruding from the outside.

In the illustrated example, the inner sleeve 23 and the outer sleeve 24 are formed of concentric metal annular members. After the sleeves 23 and 24 are filled with an elastic material such as rubber, they are vulcanized. The tension means 14 is formed by molding and vulcanizing and adhering to both sleeves. Then, the formed tension means 1
4 positions the stopper lever 27 and the tension lever 28 in the diametrical direction of the sleeve.

The actuating means 15 comprises a bolt which penetrates from one end of the frame supporting portion 17 of the bracket 13 from below and is screwed so as to be able to move back and forth. Therefore, the nut 29 is fixed to the lower surface of one end of the frame support portion 17 by welding or the like (FIG. 2).

The stopper means 16 is composed of a bolt which is penetrated from below at the other end of the frame support portion 17 and screwed so as to be able to move back and forth. Therefore, the frame support portion 17
A nut 30 is fixed to the lower surface of the other end of the by welding or the like (FIG. 2).

Inner sleeve 2 of tensioning means 14
The end of the frame 2 is inserted into and detached from the frame 3 and is fixed thereto. For this fixing, a set bolt 31 is provided on the extension portion 26 of the inner sleeve 23. When the frame 2 is fixed to the tension means 14 by the set bolt 31, the pair of levers 27 and 28 are arranged substantially parallel to the frame support portion 17 of the bracket 13, and the tension lever 28 is located above the actuating means 15. In the case of the illustrated example, the frame support portion 17 of the bracket 13 is formed to have a narrow width, and the extension portion 26 and the stopper lever 27 of the inner sleeve are located laterally of the upper space of the frame support portion 17, so that the stopper lever 27 The wing portion 32 formed at the tip is positioned above the stopper means 16.

When the scraper 10 of the belt cleaner mechanism 1 is in contact with the surface of the belt 5 and the bolt constituting the actuating means 15 is rotated and screwed, the tension lever 28 is pushed up by the tip of the bolt. By this pushing up, the frame 2 is rotated together with the tension means 14, so that the cushion member 6 of each cleaner unit 3 is elastically deformed, and the elastic force presses the scraper 10 against the surface of the belt 5. Thus, when the actuating means 15 is screwed to push up the tension lever 28, not only the cushion member 6 is elastically deformed, but also the elastic member 25 of the tension means 14 is elastically deformed in the twisting direction. That is, since the scraper 10 is in contact with the belt surface, the frame 2 and the inner sleeve 23 are received in the rotating direction.
By forcibly rotating the outer sleeve 24 by means of, the elastic member 25 is twisted and deformed between the sleeves 23 and 24.

Therefore, when the belt conveyor is operated in this state, the scraper 10 is suitably applied to the surface of the belt 5 by the elastic force of both the cushion member 6 of the cleaner unit 3 and the elastic member 25 of the tension means 14. Since they are pressed against each other, residual deposits on the belt surface can be scraped off very well.

When the scraper 10 wears, the inner sleeve 23 is rotated by the restoring force of the elastic member 25 twisted as described above, and the frame 2 is rotated in the same direction.
As a result, the cleaner unit 3 continues to press the scraper 10 against the surface of the belt 5 in a state where the cushion member 6 is elastically deformed, and maintains the scraping effect of the scraper 10.

The stopper means 16 is used when the belt conveyor is for both forward and reverse rotation. In this case, the bolt constituting the stopper means 16 is adjusted forward and backward so that the tip of the bolt is slightly spaced from the lower surface of the stopper lever 27 by a distance S.
And set them so that they are located apart (Fig. 2). As a result, it is possible to prevent the scraper 10 from getting into the belt surface and damaging the belt surface when the belt 5 is reversed. Alternatively, if the spacing S is set so as to prevent further rotation of the frame 2 by the stopper means 16 when the scraper 10 is completely worn out, the tips of the arms 9, 9 and the like are belted. It is prevented that the surface is rubbed and worn.

(Second Embodiment) In FIGS. 4 to 6,
The belt cleaner mechanism 40 includes a blade-shaped scraper 41 formed in a substantially U shape in a plan view. This scraper 41 has a holder 42 that is also formed in a substantially U shape.
The holder 42 is detachably fixed to the holder, and the holder 42 includes coaxial pipe-shaped frames 43, 4 protruding laterally from both ends.
Have three. The scraper 41 has a flexible sheet 44 fixed to its back, and constitutes a guide for scraping and dropping the residual adhered matter on the belt surface.

As shown in FIG. 5 (B), the belt cleaner mechanism 40 of this type has the scraper 41 when it is rotated about the axis A of the frames 43, 43.
Rotate in the upright direction to contact the belt surface. When the scraper 41 is inclined and stands up, the scraper 41
Since the scraping edge has an upward arcuate shape, the scraping edge can be brought into contact with the belt surface having a trough habit and having an arcuate cross section. This type of belt cleaner mechanism 4
0 indicates that the applicant previously filed Australian patent 587352.
Since it is similar to the one proposed as the issue, detailed description will be omitted.

The belt cleaner mechanism 40 has a pair of frames 43, 43 supported by the mounting and supporting devices 12, 12 of the present invention. Although the pair of mounting support devices 12 and 12 are symmetrically arranged, only one mounting support device 12 is illustrated because they have the same configuration.

The mounting support device 12 in this embodiment is
The basic structure is the same as that of the mounting support device already shown in FIGS. 1 to 3 and described as the first embodiment. Therefore,
The same components are designated by the same reference numerals in the drawings, and the duplicated description will be omitted.

The mounting portion 18 of the bracket 13 is fixedly attached to a part of a belt conveyor mechanism (not shown), for example, a frame or hopper of the conveyor via bolts and nuts in a state of being arranged in the vertical direction. To be done.

In this state, the frame 43 of the belt cleaner mechanism 40 is rotatably held by the shaft support 21 of the bearing member 19. A pin 22 is attached to the shaft support 21.

The tension means 14 is attached to the frame 43.
Is installed. That is, the frame 43 is removably inserted into the inner sleeve 23 and fixed by the set bolt 31. In this state, the tension lever 28 is arranged upward and the stopper lever 27 is arranged downward. The tension lever 28 is arranged so as to face the actuating means 15, and the stopper lever 27 is arranged so that the wing portion 32 faces the stopper means 16.

Scraper 41 of belt cleaner mechanism 40
When the bolt constituting the actuating means 15 is rotated and screwed from the state where the bolt is in contact with the surface of the belt 5, the tension lever 28 is rotated by the tip of the bolt, whereby the tension means 14 and the frame 43 are rotated. Is rotated, and the scraper 41 is pressed against the belt surface. When the scraper 41 is further pressed against the belt surface and the actuating means 15 is further screwed, the outer sleeve 24 is forcibly rotated with respect to the inner sleeve 23 through the torsional deformation of the elastic member 25. As a result, the elastic member 2
The elastic force in the direction of causing the scraper 41 to rotate upright is accumulated in the member 5 via the inner sleeve 23.

Therefore, when the belt conveyor is operated in this state, the scraper 41 is appropriately pressed against the surface of the belt 5 by the elastic force of the elastic member 25, so that the residual deposits on the belt surface are extremely excellent. Can be scraped off.

When the scraper 41 is worn, the inner sleeve 23 is rotated by the restoring force of the elastic member 25 which is twisted as described above, and the scraper 41 is pressed against the surface of the belt 5 while rotating the frame 43 in the same direction. The scraping effect of the scraper 41 is maintained.

The stopper means 16 is used in a similar manner for the same purpose as in the first embodiment described above.

In the second embodiment, the bearing member 19 is attached to the frame supporting portion 17 of the bracket so that the vertical position can be adjusted. For this purpose, the bolt 20 for mounting and fixing the bearing member 19 is
The bearing member 19 is screwed through a long hole (not shown) formed in the frame supporting portion 17 and extending in the vertical direction.

A support member 45 is fixed to the lower portion of the frame support portion 17 by a bolt 46, and a push bolt 47 is penetrated from below to the support member 45 and is screwed so as to be able to move back and forth. Therefore, the nut 48 is provided on the lower surface of the support portion 45.
Are fixed by welding or the like (FIGS. 5 and 6).

Therefore, in a state where the bolt 20 is loosened and the bearing member 19 is movable up and down along the elongated hole,
Adjusting the forward / backward movement of the push bolt 47, the bearing member 19
The vertical position of the frame 43 can be adjusted by fastening the bolt 20 and fixing the bearing member 19 after determining the vertical position of the frame 43.

[0048]

As a result of the above-mentioned constitution of the present invention,
It has the following effects. (1) According to the present invention, even when the scraper is worn, the tension means can be used to elastically rotate the frame by the tension means so that the scraper can always be pressed against the belt surface. Maintenance free of the mechanism can be achieved.

(2) According to the attachment supporting device of the present invention,
Even if the residual deposits on the surface of the belt are scraped off by the scraper, and the fallen deposits fall on the mounting support device and accumulate, the intended function and action of the tensioning means can be maintained. That is, since the tension means 14 has a structure in which the elastic member 25 is interposed between the inner sleeve 23 and the outer sleeve 24, the outer sleeve 24 functions as a housing for the elastic member 25. Therefore, the tension means 14 has excellent chemical resistance, and in particular, it can be suitably protected so that the elastic member 25 is not deteriorated by the influence of the accumulated fallen objects.

(3) Elastic member 25 filled between the inner and outer sleeves 23, 24 arranged on the inner and outer circumferences and bonded by vulcanization.
Due to the configuration of, it is possible to construct a compact as possible without bulky tensioning means 14.
Therefore, as a mounting / supporting device for the belt cleaner mechanism, which is destined to be mounted by utilizing a narrow space in the belt conveyor device, it can greatly contribute to space saving.

(4) At both ends of the belt cleaner mechanism, since the frame is urged in the rotating direction to be maintenance-free, the tensioning means of one of the mounting and supporting devices located on both sides is temporarily assumed. Even if the elastic urging force of is not balanced with the elastic urging force of the tension means of the other device, which causes an imbalance, it is possible to apply a uniform elastic force to the scraper of the belt cleaner mechanism. Therefore, it is extremely advantageous in that it does not cause uneven wear of the scraper. (5) In particular, according to the present invention, the bearing member 19 has
While supporting the frames 2 and 43 rotatably,
In addition to the bearing member 19 such as
Is provided, and tension (rotational biasing force) is provided by the operating means 15.
There is a basic configuration in that the can be adjusted. And h
Bearings 2 and 43 to bracket 13
From the state in which it is rotatably supported by the material 19,
The inner sleeve 23 of the connection means 14
2 and 43 are rotatably attached to the outer circumference of the tension means 14
After adjusting the directional positioning, the frame is fixed by the fixing means 31.
The extension parts 26 of the inner sleeve 23
Since it can be fixed non-rotatably, the tension means
Not only is the mounting work of 14 easy, but also the tension means
Optimal positioning of 14 in the circumferential direction with respect to frames 2 and 43
The effect that it can be installed in the state
It (6) Further, according to the present invention, the inner sleeve 23
An extension portion 26 is provided on the
The feature is that the step 31 and the stopper lever 27 are provided.
It In this way, the extension 26 of the inner sleeve 23
The fixing means 31 and the stopper lever 27 are provided, and the outer
-Providing a tension lever 28 on the outer periphery of the sleeve 24
Due to this structure, the bullets between the inner and outer sleeves 23, 24 are
It is possible to form a cavity for the elastic member 25.
The cavity includes the fixing means 31, the lever 27,
Since it is not interfered with by 28, the elastic member 25 is filled and added.
It is possible to bond with vulcanization, which allows tensioning
The productivity of the tier 14 is improved and the above-mentioned compact
This is a configuration that is possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a first embodiment of the present invention.

FIG. 2 is a side view showing the first embodiment of the present invention.

FIG. 3 is a front view partially showing a first embodiment of the present invention.

FIG. 4 is a perspective view showing a main part of a second embodiment of the present invention.

FIG. 5 is a side view showing a second embodiment of the present invention,
(A) is a side view showing the entire apparatus, and (B) is a side view showing only a belt cleaner mechanism.

FIG. 6 is a front view partially showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Belt Cleaner Mechanism 2 Frame 5 Belt 10 Scraper 12 Mounting Support Device 13 Bracket 14 Tension Means 15 Actuating Means 16 Stopper Means 19 Bearing Member 23 Inner Sleeve 24 Outer Sleeve 25 Elastic Member 26 Extension 27 Stopper Lever 28 Tension Lever 40 Belt Cleaner Mechanism 41 scraper

Claims (1)

[Claims] 1. An apparatus for mounting and supporting a belt cleaner mechanism for scraping off and removing residual deposits on a surface of a conveyor belt, comprising a frame (2) (4) of the belt cleaner mechanism.
3) Secure the bearing member (19 ) that rotatably supports
The bracket (13) provided, the tensioning means (14) for urging the frame in the rotating direction, the actuating means (15) for activating the tensioning means, and the excess of the frame.
It is composed of stopper means (16) for preventing rotation.
The tension means (14) includes an inner sleeve (23) that insertably and rotatably inserts and fixes the frame, and an outer sleeve (24) that is arranged around the inner sleeve with a space. If, from the filled between the inner and outer sleeve bonded by vulcanization elastic member (25)
And the inner sleeve (23) is the outers
An extension (26) protruding laterally from the leave (24) is provided.
The frame is detachably and non-rotatably fixed to the extension.
The fixing means (31) for
Extend the stopper lever (27) in the direction
The sleeve (24) faces away from the stopper lever
A tension lever (28) protruding in the radial direction
The actuating means (15) is provided on the bracket so as to be movable back and forth , and the tension lever (2).
The stopper means 8) comprises an advancing / retreating adjustment member for forcibly moving the outer sleeve (24) in the rotational direction of the outer sleeve (24).
(16) is provided on the bracket so as to be movable back and forth.
Both of the inner sleeves are urged by the elastic member (25).
Stopper lever facing the direction of rotation of the sleeve (23)
A belt cleaner mechanism mounting and supporting device comprising an advance / retreat adjusting bolt facing (27) .