JPH10167435A - Belt conveyor belt lifting device - Google Patents

Abstract

(57) [Summary] [Problem] To lift a belt safely and securely by a single worker in a narrow place. A belt lifting device for a belt conveyor that lifts a belt that moves on a plurality of rollers disposed at a predetermined interval in a longitudinal direction of the side rails between a pair of side rails. . At the lower end of both ends, there are provided engaging portions 22a, 22a which can be engaged with the side rails.
Lifting member 21 formed so as to be able to contact the bottom surface of the lifting member 21, an upper portion is detachably attached to a lower portion of the lifting member 21, a lower portion is detachably attached to an upper portion of the gantry 22, and the lifting member 21 is moved up and down with respect to the gantry 22. Jack 2
3 is provided. Preferably, the jack 23 is a pantograph-type jack, and the interval between the pair of engaging portions 22a, 22a is preferably adjustable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt lifting device for a belt conveyor for lifting a belt moving on a plurality of rollers disposed at a predetermined interval in a longitudinal direction of the side rail between a pair of side rails. It is about.

[0002]

2. Description of the Related Art Conventionally, a belt conveyor is known as a device for continuously transporting bulk materials such as ore, gravel and coal, or bulk materials such as boxes and bags along a certain path for a certain distance. . Such a belt conveyor is configured such that a plurality of rollers are disposed between a pair of side rails at predetermined intervals in the longitudinal direction of the side rails, and the belt moves on the rollers. In the belt conveyor configured as described above, the above-mentioned loose object or bulk material is mounted on the moving belt, so that the belt can be moved and can be continuously transported for a predetermined distance.

In such a belt conveyor, since the belt moves on a rotating roller, for example, if one roller is damaged or damaged, the belt may be damaged over its entire length. It is listed as. Then, the roller in which the occurrence of the abnormality is confirmed is replaced before the belt is damaged, and is managed so as to maintain the original function of the belt on which loose objects are loaded. Such roller replacement work is carried out jointly by a plurality of workers, and one or two or more workers lift the stopped belt, and in the meantime, other workers replace the rollers of the lifted belt. Is being done.

[0004]

However, in such a roller replacement operation, the belt itself of the belt conveyor is heavy, and if the belt is accidentally dropped from the lifted state during the operation, the belt may be damaged. There is a problem that the safety is impaired, especially when loose items are already loaded on the belt. Also, the path for inspection and repair of such a belt conveyor is usually not wide, and it may be difficult for a plurality of workers to work at the same place where the belt conveyor is installed. SUMMARY OF THE INVENTION It is an object of the present invention to provide a belt lifting device for a belt conveyor that can easily replace rollers in a narrow place. Another object of the present invention is to provide a belt lifting device for a belt conveyor that allows a single operator to lift a belt safely and reliably.

[0005]

The invention according to claim 1 is
As shown in FIG. 1, a belt 14 that moves on a plurality of rollers 13 disposed between the pair of side rails 12 at predetermined intervals in the longitudinal direction of the side rails 12.
A belt lifting device of a belt conveyor for lifting a belt, which has engagement portions 22a, 22a at the lower ends of both ends capable of engaging with the side rails 12, 12, and engages the engagement portions 22a, 22a with the side rails 12, 12, respectively. A gantry 22 laid on the pair of side rails 12, 12, a lifting member 21 having an upper surface formed to be able to contact the bottom surface of the belt 14, and an upper portion detachably attached to a lower portion of the lifting member 21. A belt lifting device for a belt conveyor having a lower portion detachably attached to an upper portion of a gantry 22 and a jack 23 for raising and lowering the lifting member 21 with respect to the gantry 22. The gantry 22 is installed on the pair of side rails 12 of the belt conveyor, and the lifting member 21 is brought into contact with the bottom surface of the belt 14. Lifting member 2 by jack 23
1 with respect to the gantry 22
Is lifted from the roller 13 by the lifting member 21.

A second aspect of the present invention is the invention according to the first aspect, wherein the jack 23 is a belt lifting device for a belt conveyor in which the jack 23 is a pantograph type jack. By using the pantograph-type jack, the folded jack can be easily carried between the lifting member and the gantry when not in use. The invention according to claim 3 is the invention according to claim 1 or 2, wherein the pair of engagement portions 22a, 2
This is a belt lifting device for a belt conveyor in which the interval of 2a is adjustable. By configuring the distance between the engaging portions 22a, 22a to be adjustable, the side rails 12, 1 can be adjusted.
The apparatus of the present invention can be applied to a plurality of types of belt conveyors having different intervals.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIG. 4, a belt conveyor 11 that can use the apparatus of the present invention includes a pair of side rails 12 and 12.
A plurality of rollers 13 are disposed at predetermined intervals in the longitudinal direction of the side rails 12 between the rollers 2 and 12 (only one is shown in the figure), and a belt 14 is configured to move on the rollers 13. You. Although not shown, side rail 1
A drive roller and a driven roller are disposed at both ends in the length direction of the belts 2 and 12, and the belt 14 is stretched endlessly between these rollers. The roller 13 in the present embodiment is constituted by three small rollers 13a, 13b, 13c. These three small rollers 13 are used to prevent loose objects from falling out.
a, 13b, 13c, small rollers 13a, 13 on both sides.
c is provided inclined. Thereby, the small rollers 13a-
The belt 14 that moves on 13c is pivotally supported between the side rails 12 via a roller base 13d in a state where the center of the cross section is depressed.

As shown in FIG. 1, a belt lifting device 20 for a belt conveyor according to the present invention comprises a lifting member formed so as to be capable of contacting the bottom surface of a belt 14 having such a cross section that its central portion is depressed. 21, a gantry 22 installed on the pair of side rails 12, and a jack 23. As shown in FIG. 3, the lifting member 21 is formed by cutting a steel material, and a concave portion 21 a into which the upper portion of the jack 23 is fitted is formed at the lower center of the lifting member 21. A screw hole 21b is formed in the side surface of the concave portion 21a, and the lifting member 21 is fixed to the upper portion of the jack 23 by inserting the upper portion of the jack 23 into the concave portion 21a and screwing a bolt 21c (FIG. 1). I have.

At the lower end of both ends of the gantry 22, side rails 12 are provided.
Are formed respectively. The engaging portions 22a, 22a are recessed grooves that can be fitted into the side rails 12, and the engaging portions 22a, 22a are engaged with the side rails 12, 12, respectively. Is to be erected. The gantry 22 includes a gantry body 22b and a moving member 22c. A bar-shaped member 22d having a male screw formed on an outer surface in a longitudinal direction is provided at one end of the gantry body 22b. Is fitted so as to be movable along. A pair of concave grooves, which are the engaging portions 22a, 22a, are formed in the other end of the gantry body 22b and the moving member 22c, and by moving the moving member 22c along the rod-shaped member 22d, the pair of concave portions is formed. The interval of 22a is configured to be adjustable. The adjusted base 22 is configured such that the gap between the adjusted engaging portions 22a is fixed by screwing a nut 22e to a rod-shaped member. A screw hole (not shown) is formed on the upper surface of the gantry body 22b, and the lower portion of the jack 23 is connected to the gantry 2 through the screw hole.
2 so that it can be attached to the upper part.

The jack 23 in this embodiment is a screw jack for a vehicle, and a pantograph jack is used. The pantograph jack 23 has a pair of first lifting arms 23a, 23a and a pair of second lifting arms 23b, 23b. The base ends of the pair of first lifting arms 23a, 23a are pivotally attached to an upper member 23c, which is an upper part attached to a lower portion of the lifting member 21, and
The base ends of the lifting arms 23b, 23b are pivotally attached to a base 23d, which is a lower part attached to an upper part of the gantry 22. The other end of the pair of first lifting arms 23a, 23a and the pair of second
The other ends of the lifting arms 23b, 23b are pivotally connected to the first and second connecting members 24, 26, respectively. First connecting member 2
4 is formed with a female screw 24a, and a drive shaft 27 is pivotally connected to the second connecting member 26. The drive shaft 27 is connected to the first connecting member 2.
4 is formed with a screw portion 27a that is screwed into the female screw 24a provided in the first connecting member 24.
One end thereof is pivotally attached to the second connecting member 26 in a state of being screwed to the 4a. At one end of the drive shaft 27, a mounting portion 27b to which a rotating handle is mounted is provided. By rotating a handle (not shown) mounted on the mounting portion 27b, the drive shaft 27 rotates and the screw portion 27a rotates. The female screw portion 24 a of the first connection member 24 moves the drive shaft 27 to draw or move the first connection member 24 and the second connection member 26 together, so that the jack 23 raises the lifting member 21 with respect to the gantry 22. It is configured to move up and down.

A description will now be given of a roller replacement operation using the belt lifting device of the belt conveyor configured as described above. The worker lifts the belt 14 by the present apparatus 20 when daily inspection shows that the roller 13 of the belt 14 conveyor 11 needs to be replaced due to damage to the roller 13 or the like. When lifting the belt 14, the operator assembles the apparatus 20 in advance. That is, the upper member 23c of the jack 23 is attached to the lower portion of the lifting member 21,
The base 23d of the jack 23 is mounted on the upper part of the gantry 22. The upper member 23c of the jack 23 is attached by inserting the upper member 23c into the concave portion 21a of the lifting member 21 and screwing a bolt 21c into a screw hole 21b of the lifting member 21 to attach the base 23d to the gantry 22. Is the base 2
This is performed by screwing a bolt 28 into a screw hole (not shown) of the gantry 22 through a mounting hole formed in 3d. In this case, the gantry 22 adjusts the distance between the pair of engaging portions 22a, 22a by moving the moving member 22c along the rod-shaped member 22d, and adjusts the distance between the pair of side rails 12 to the engaging portions 22a, 2a.
The interval of 2a is matched. The jack 23 is the mounting part 2
The handle is attached to 7b and the drive shaft 27 is rotated to widen the space between the first connecting portion 24 and the second connecting portion 26. By thus increasing the distance between the first connecting portion 24 and the second connecting portion 26, the left and right first lifting arms 23a, 23
The angle centered on the upper member 23c of 3a and the angle centered on the base 23d of the left and right second lifting arms 23b, 23b are widened, and the upper member 23c is kept at a lower position with respect to the gantry 22.

As shown in FIG. 1, a gantry 22 of the apparatus 20 in which the upper member 23c is at a low position is inserted from below the belt 14 and laid on a pair of side rails 12 of the belt conveyor 11. When the gantry 22 is installed, the lifting member 21 is brought into contact with the bottom surface of the belt 14, and then the belt 14 is lifted. The contact of the lifting member 21 and the lifting of the belt 14 are performed by rotating the drive shaft 27 of the jack 23 via a handle to reduce the distance between the first connecting portion 24 and the second connecting portion 26. When the distance between the first connecting portion 24 and the second connecting portion 26 is reduced, the left and right first lifting arms 23
The angles of the upper members 23a, 23a around the upper member 23c and the angles of the left and right second lifting arms 23b, 23b around the base 23d are narrowed, and as shown in FIG. Become a high position. The belt 14 is lifted from the roller 13 by the lifting member 21 by setting the upper member 23c at a high position with respect to the gantry 22.

When the belt 14 is lifted, the operator replaces the roller 13. When the replacement of the rollers 13 is completed, the operator follows the procedure of lifting the belt 14 again, returns the belt 14 to the replaced rollers 13, and removes the device 20 from the side rails 12, so that a series of rollers is removed. The replacement work of No. 13 is completed. In the above-described embodiment, the pantograph jack 23 is used as the jack. However, a screw jack of another type may be used, or a hydraulic or pneumatic jack may be used.

[0014]

As described above, according to the present invention, a gantry mounted on a pair of side rails, a lifting member formed so that the upper surface can contact the bottom of the belt, and a lifting member with respect to the gantry And a jack that raises and lowers the belt, the gantry is mounted on the side rail, and the lifting member is brought into contact with the bottom surface of the belt and the lifting member is raised by the jack, whereby the belt can be lifted from the roller. As a result, even if the place where the belt conveyor is installed or the inspection passage is narrow, if the present apparatus can be carried in, the belt can be easily lifted to replace the roller. Further, since the belt is lifted by the present apparatus, an operator who lifts the belt becomes unnecessary, and a single operator can safely and securely lift the belt and replace the rollers. In addition, if a pantograph-type jack is used for the jack, the folded jack can be easily carried between the lifting member and the base when not in use, and the distance between the pair of engaging parts of the base can be adjusted. With this configuration, the apparatus of the present invention can be used for a plurality of types of belt conveyors having different side rail intervals.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a lifting device of the present invention is installed on a side rail of a belt conveyor.

FIG. 2 is a view corresponding to FIG. 1, showing a state where the belt is lifted by the lifting device.

FIG. 3 is a side view showing the configuration of the lifting device.

FIG. 4 is a sectional view of a belt conveyor in which the apparatus is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Belt conveyor 12 Side rail 13 Roller 14 Belt 21 Lifting member 22 Stand 22a Engaging part 23 Jack

Claims (3)

[Claims] A belt (1) that moves on a plurality of rollers (13) disposed between a pair of side rails (12, 12) at predetermined intervals in the longitudinal direction of the side rails (12, 12). 14) A belt lifting device of a belt conveyor for lifting, comprising an engagement portion (22a, 22a) engageable with the side rail (12, 12) at a lower end of both ends, the engagement portion (22a, 22a ) Are engaged with the side rails (12, 12), respectively, so that the base (22) installed on the pair of side rails (12, 12) and the upper surface can contact the bottom surface of the belt (14). A formed lifting member (21), an upper portion is detachably attached to a lower portion of the lifting member (21), and a lower portion is detachably attached to an upper portion of the pedestal (22). A belt lifting device for a belt conveyor, comprising a jack (23) for lifting and lowering the lifting member (21). 2. A belt lifting device for a belt conveyor according to claim 1, wherein the jack (23) is a pantograph type jack. 3. The belt lifting device for a belt conveyor according to claim 1, wherein a distance between the pair of engaging portions (22a, 22a) is adjustable.