JP6853922B2 - Belt meandering adjustment device - Google Patents

Description

The present invention relates to a device that automatically adjusts the meandering of a return belt in a belt conveyor.

Countermeasures against meandering of the belt are one of the major issues that cannot be avoided when operating the belt conveyor, and various types of countermeasures have been conventionally proposed (see, for example, Patent Document 1).

When the return side belt meanders, there is a method of adjusting the pressing force by the pressing roller that presses the upper surface of the return side belt bearing on the roller stand.
To adjust this pressing force, a level adjustment plate is inserted (intervened) between the conveyor frame and the stand support.

However, there is a problem that it takes a lot of time and effort to select a plate having a desired thickness, and it is not possible to adjust to a desired level in a short time because a plurality of workers are arranged on both sides of the conveyor frame and work in cooperation with each other. There was a problem.

Therefore, in order to eliminate the inconvenience of selecting the level adjustment plate, the methods of FIGS. 8 and 9 in the attached drawings are adopted as a normal manufacturer's standard type adjustment device.

In this conventional method (shown in FIGS. 8 and 9), the projecting plates 52 projecting upward from the conveyor frames 51 on both sides and the projecting plates projecting downward from both ends of the support frame 53 of the bearing swivel frame 58 of the holding roller 57. A plurality of multi-stage through holes 55 are provided in both of the 54 and 54, and a fastener 56 composed of a bolt and a nut is inserted into the matching through holes 55 to fix the holes 55.

Japanese Unexamined Patent Publication No. 2008-308252

By the way, in order to adjust the pressing force by the pressing roller, it is not possible to adjust the pressing force to a desired level in a short time because a plurality of workers are arranged on both sides of the conveyor frame and the work is performed in cooperation with each other. The reason for this is that it takes time and effort to adjust the selection position of the multi-stage through hole, remove the fastener, and insert it.

Then, there is also a problem that the attachment portion facing the belt traveling direction cannot be adjusted at the same time on the left and right and the minute adjustment cannot be made.

Therefore, the present invention is to provide an epoch-making belt meandering adjusting device capable of eliminating the above-mentioned inconvenience in a short time.

In order to solve the above problems, the present invention includes an upper horizontal fixed frame provided by attaching both left and right ends to a conveyor frame in the space between the carrier belt and the return belt in the belt conveyor, and the space. A horizontal slide frame on the lower side, which is provided so that a slider is slidably engaged with a guide rail on the lower side to move up and down, is installed between the slide frame and the fixed frame, and the slide frame is installed. The lift jack device for raising and lowering the slide frame in which the end rotation operation part of the rotating shaft for raising and lowering is located on the conveyor frame side on one side, and the lower surface turning support shaft at the center between both ends of the slide frame and the center between both ends. A swivel frame that freely swivels and a holding roller for pushing down the upper surface of the return belt provided on the swivel frame are adopted.

As described above, according to the belt meandering adjusting device of the present invention, the swivel frame is moved up and down together with the slide frame by operating the lift jack device. Can be adjusted freely.

Since the terminal rotation operation portion of the elevating rotation shaft of the lift jack device is located on one side of the conveyor frame, there is a peculiar effect that the lift jack device can be operated extremely smoothly on one side of the conveyor frame.

It is a partial notch front view which shows the embodiment of this invention. It is a partial notch enlarged front view which shows the main part of the same above. It is a partial cutout enlarged front view of the same as above. It is a longitudinal enlarged side view of the same as above. It is the same longitudinal enlarged side view. It is a partial notch front view which shows the ascending position of a holding roller. It is a partial notch front view which shows the descent position of a holding roller. It is a front view which shows the conventional example. It is the same side view.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.
A shown in FIG. 1 is a belt conveyor.

As is well known, the above-mentioned belt conveyor A includes a head pulley and a tail pulley (both not shown), an endless belt a extending between the head pulley and the tail pulley, and conveyors on both sides of the belt conveyor A. Both ends of the parallel horizontal member (not shown) that attaches both ends to the frame 1 and crosses under the carrier side belt a, and both ends of the support shaft 3 that penetrates the center of the opposing stand 2 that stands up from the middle are supported in a non-rotating state. A carrier roller 4 that supports the back surface of the belt a on the carrier side and a pressing roller 5 that presses and supports the scattered positions of the back surface of the belt a on the return side (the support of the pressing roller 5 is , Will be described later).

Further, as shown in FIGS. 1 to 6, above the arrangement position of the pressing roller 5, on the upper side of the space between the carrier side and the return side of the belt a, the conveyor frames 1 on both sides are placed horizontally on the upper side via the bracket 6. Supports both ends of the fixed frame 7.

Further, vertical guide rails 8 are provided at both ends of the upper horizontal fixed frame 7, and are provided at both ends of the lower horizontal slide frame 9 parallel to the guide rail 8 on the lower side of the fixed frame 7. The slider 10 is slidably engaged so that the slide frame 9 moves up and down with respect to the fixed frame 7.

As shown in FIGS. 1, 4, 6 and 7, the guide rail 8 is provided with elongated holes in the vertical direction in the protruding plates 16 projecting downward from both ends of the fixed frame 7, and the elongated holes are used as guide rails. However, a rail may be provided instead of the elongated hole. In the drawing, the slider 10 uses a shaft member penetrating the elongated hole as a slider, but the slider 10 may be a slider that slides in the vertical direction without limitation.

In short, the slide frame 9 guides the slide that approaches and separates from the fixed frame 7.

Then, the center of the upper surface of the swivel frame 12 is supported by the swivel support shaft 11 installed at the center of the lower surface of the slide frame 9, and the support metal fittings 13 provided at both ends and the center of the lower surface of the swivel frame 12 are attached to the above-mentioned pressing roller 5. The center shaft 17 is supported in a non-rotating state.

In the case of the above-mentioned pressing roller 5, the left and right sides are tapered rollers and the offset rollers are arranged in the center. However, regardless of the arrangement and shape, the left and right sides are straight rollers and the rollers are in the center. In some cases.

As shown in FIGS. 1, 6 and 7, the swivel frame 12 is a rotor pivotally supported on the upper surfaces of both ends of the swivel frame 12 on a rail 14 along the traveling direction of the belt a on the lower surfaces of both ends of the slide frame 9. The 15 are brought into contact with each other to ensure smooth turning of the turning frame 12.

Further, between the fixed frame 7 and the slide frame 9, a manual rotation operation unit can be operated outside the conveyor frame 1 on one side, and at the same time, it expands and contracts with the rotation operation and is pressed by the lowering of the slide frame 9. A lift jack device C for pushing down the return side belt a downward via the roller 5, that is, for adjusting the pushing pressure is provided.

As shown in FIGS. 1, 2, 3, 4, and 5, the lift jack device C has a pair of front and rear opening / closing parts that support an intersection portion where the center between both ends intersects in an X shape at both ends of the fulcrum shaft 21. A connecting plate 23 that connects the plates 22 and 22 and the upper right ends of the pair of opening and closing plates 22 and 22 in FIG. 3, a through hole 24 provided in the center between both ends of the connecting plate 23, and the through hole 24. A rotation shaft 26 having a bearing 25 for rotating the rotation operation portion B at the end (handle in the case of the drawing) at a fixed position positioned on one side of the conveyor frame 1 and the rotation shaft 26. A male screw 27 provided in the range from the middle to the tip of the outer peripheral surface, a connecting plate 28 for connecting the upper left ends of the pair of opening / closing plates 22 and 22 to each other, and the male screw provided in the center between both ends of the connecting plate 28. A female screw 29 into which 27 is screwed, a connecting shaft 30 for connecting the lower right ends of the pair of opening / closing plates 22 and 22 to the slide frame 9, and a lower left end of the pair of opening / closing plates 22 and 22 are provided on the lower left end, respectively. The support rotor 31 on the support shaft 41 provided so as to slide in the slide frame 9 of the grooved material whose upper surface is opened in the fixed frame 7 of the grooved material to be opened (this rotor 31 is shown in FIG. 3). As shown, the fixed frame 7 and the slide frame 9 are respectively provided with groove-shaped rails 32 so that smooth sliding can be performed), and the rotation operation unit B is manually rotated. Then, the pair of opening / closing plates 22 and 22 opened as the female screw 29 screwed into the male screw 27 moved to the right in FIG. 3 from the closed state in FIG. 6 to the open state in FIG. The slide frame 9 is unwound by the opening / closing plates 22 and 22, and the swivel frame 12 is also unloaded along with the down.

As a result, the return side belt a is pressurized downward by the pressing roller 5 of the swivel frame 12.

The lift jack device C is not limited to the configuration shown in the figure, and achieves the purpose, that is, allows an operator to adjust the pressing force of the belt extremely easily and easily on one side of the belt conveyor A.

As is well known, the reason why the swivel frame 12 (supporting the holding roller 5) is provided so as to be swivelable with respect to the slide frame 9 via the swivel support shaft 11 is that the swivel frame 12 swivels with the meandering of the return side belt a. After that, in order to adjust the meandering of the return side belt a, the swivel frame 12 is returned to the original state, and the action thereof is well known and detailed description thereof will be omitted.

A Belt conveyor a Belt B Rotor operation part C Lift jack device 1 Conveyor frame 2 Stand 3 Support shaft 4 Carrier roller 5 Holding roller 6 Bracket 7 Fixed frame 8 Guide rail 9 Slide frame 10 Slider 11 Swing support shaft 12 Swing frame 13 Support Metal fittings 14 Rail 15 Rotor 16 Protruding plate 17 Center shaft 21 Supporting shaft 22 Opening and closing plate 23 Connecting shaft 24 Through hole 25 Bearing 26 Rotating shaft 27 Male screw 28 Connecting plate 29 Female screw 30 Connecting shaft 31 Rotor 32 Rail

Claims (1)

In the space between the carrier belt and the return belt in the belt conveyor, the upper horizontal fixed frame provided by attaching the left and right ends to the conveyor frame and the lower side in the space where the slider is slidably engaged with the guide rail. It is installed between the lower horizontal slide frame provided so as to be combined and raised and lowered, and the slide frame and the fixed frame, and the end rotation operation portion of the raising and lowering rotation shaft of the slide frame is provided on one side. A lift jack device for raising and lowering the slide frame located on the conveyor frame side of the above, a swivel frame in which the center between both ends is swivelly supported on a lower surface swivel support shaft at the center between both ends of the slide frame, and the swivel frame. A belt meandering adjusting device including a holding roller for pushing down the upper surface of the return belt provided in the above.

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