JP6368726B2 - Belt conveyor lifting device - Google Patents

Description

  The present invention relates to a belt conveyor lifting apparatus, and more particularly to a belt conveyor lifting apparatus having a small occupation area and a very high work efficiency.

In mountain tunnel construction, a continuous belt conveyor for carrying sludge is extended from the face to the outside of the mine.
In a narrow pit, the belt conveyor may interfere with other facilities and operations, so the installation height of the belt conveyor needs to be raised or lowered depending on the process.
For example, when installing a turntable for U-turning a construction vehicle such as a truck mixer, it is necessary to suspend the belt conveyor from the tunnel ceiling to a high place in order to avoid conflict between the belt conveyor and the construction vehicle. There is.
Moreover, since these facilities and work move according to the extension of the tunnel, it is necessary to appropriately change the installation height of the belt conveyor according to the process.

Conventionally, when raising the installation height of a belt conveyor in a tunnel, first, an anchor or a metal fitting is attached to a side wall using an aerial work vehicle or the like. Subsequently, the belt conveyor is lifted by a backhoe or the like, and placed on the belt conveyor lifted by the worker, and is replaced with an anchor or a metal fitting.
In addition, as disclosed in Patent Documents 1 and 2, there is also a method of continuously moving the belt conveyor up and down using a pulling type support carriage.

JP 2004-300724 A JP 2000-25933 A

However, the prior art has the following drawbacks.
<1> A heavy machine is required to lift the belt conveyor. For this reason, it occupies a limited space greatly and interferes with other work, causing a delay in the construction period. In addition, it is difficult to operate heavy machinery in a narrow pit and work efficiency is poor.
<2> Perform the replacement work on the belt conveyor that has been lifted. Since the belt conveyor is soft and unstable, work efficiency is poor and it is difficult to ensure safety.
<3> The towed truck is large and takes up a lot of space. In addition, the production cost and work cost are high.
<4> The mechanism that jacks up the rails of the belt conveyor from the top of the carriage is structurally limited to the maximum height of the belt conveyor, so the belt conveyor cannot be raised to a high place.

  It is an object of the present invention to provide a belt conveyor lifting device that solves the problems of the prior art.

  The belt conveyor lifting apparatus of the present invention for solving the above-described problems includes a lifting part, a support part, and a lifting mechanism, and the lifting part supports a belt conveyor from below and an upper part. 2, two substantially parallel slide members connected to the cradle, and a lower frame connected to the lower portions of the two slide members, and the support portion holds the two slide materials slidably up and down. Two guide members and a girder member that connects the two guide members substantially in parallel with each other, and the elevating mechanism is attached to the girder member and is capable of lifting the lower frame.

  In the belt conveyor lifting device of the present invention, the lifting mechanism may be a combination of a chain block attached to a girder and a chain spanned between the chain block and the lower frame.

  In the belt conveyor lifting / lowering device of the present invention, the support portion can be connected to the frame scaffold, and the belt conveyor may be lifted / lowered by obtaining support from the frame scaffold.

Since the belt conveyor lifting apparatus of the present invention has the above configuration, it has at least one of the following effects.
<1> Since the belt conveyor can be lifted manually from the ground, the work efficiency is very high. In addition, since no heavy machinery is used, space can be used effectively.
<2> The belt conveyor can be replaced in a stable state supported by the frame scaffold. Therefore, work efficiency is high and work safety is high.
<3> Since the existing framework scaffold can be diverted, the construction cost is low and the weight is light, so the movement is easy.
<4> Since the mechanism lifts the lower frame of the lifting part from the upper girder of the supporting part, the lifting width of the belt conveyor is very large.

Explanatory drawing of the belt conveyor raising / lowering apparatus which concerns on this invention. Explanatory drawing of the Example of the belt conveyor raising / lowering apparatus which concerns on this invention. (A) is a side view, (b) is a front view. Explanatory drawing of the Example of the belt conveyor raising / lowering apparatus which concerns on this invention. (A) is a side view, (b) is a front view.

  Hereinafter, the belt conveyor lifting apparatus of the present invention will be described in detail with reference to the drawings.

[Belt conveyor lifting device]
<1> Overall configuration (FIG. 1).
The belt conveyor lifting / lowering device 1 of the present invention is a device for supporting the belt conveyor A from below and lifting it.
The belt conveyor elevating device 1 includes an elevating unit 10 that elevates and lowers the belt conveyor A, a support unit 20 that supports the elevating unit 10 to be slidable, and an elevating mechanism 30 that lifts and elevates the elevating unit 10.
This example demonstrates the example which attaches and uses the belt conveyor raising / lowering apparatus 1 to the frame scaffold B. FIG.

<2> Lifting unit.
The raising / lowering part 10 is a frame-shaped body provided with the receiving stand 11, the lower frame 13, and the two slide materials 12 which connect these. When the belt conveyor lifting apparatus 1 is installed, the cradle 11 is arranged at the upper part and the lower frame 13 is arranged at the lower part.
In this example, various shaped steels are welded in a frame shape to assemble the lifting unit 10. However, the material is not limited to this.

<2.1> A cradle.
The cradle 11 is a long member that supports the lower surface of the frame of the belt conveyor A.
The cradle 11 is connected to the upper part of the slide member 12 in the vicinity of both ends.
A support frame or the like for preventing the belt conveyor A from sliding off may be provided on the upper portion of the cradle 11.

<2.2> Slide material.
The slide member 12 is a long member for sliding the cradle 11 up and down.
In this example, two slide members 12 are provided and arranged so that both are substantially parallel.
The upper part of the slide material 12 is connected to the lower part of the cradle 11, and the lower part of the slide material 12 is connected to the upper part of the lower frame 13.
The intermediate portion of the slide material 12 is inserted into a guide material 23 of the support portion 20 described later, and can slide up and down in the guide material 23.
The length of the slide material 12 is designed according to the maximum height at which the belt conveyor A is raised.

<2.3> Bottom frame.
The lower frame 13 is a long member that transmits the lifting force by the lifting device 30 to the cradle 11 via the slide member 12.
The lower frame 13 is connected to the lower part of the slide member 12 in the vicinity of both ends.
A rib or the like for bridging a chain 32 of an elevating mechanism 30 to be described later may be provided at the center upper portion of the lower frame 13.

<3> Support part.
The support portion 20 is a frame-like body that includes an upper girder 21 and a lower girder 22 that are arranged substantially in parallel, and two guide members 23 that connect them.
When the belt conveyor lifting apparatus 1 is installed, the upper girder 21 is arranged at the upper part and the lower girder 22 is arranged at the lower part.
In this example, the support part 20 is assembled by welding various shape steels in a frame shape. However, the material is not limited to this.

<3.1> Upper and lower digits.
The upper girder 21 and the lower girder 22 are long members for connecting the two guide members 23 and fixing the belt conveyor lifting device 1 to the frame scaffold B.
A rib or the like for suspending a chain block 31 of an elevating mechanism 30 (to be described later) may be provided at the lower center of the upper beam 21.
In this example, connecting mechanisms are provided at both ends of the upper girder 21 and the lower girder 22 so as to be fixed to the horizontal handrail of the frame scaffold B. For example, a clamp mechanism can be adopted as the coupling mechanism.

<3.2> Guide material.
The guide member 23 is a cylindrical member that holds the slide member 12 of the elevating unit 10 so as to be slidable up and down.
In this example, two guide members 23 are provided and arranged in the vertical direction so that both are substantially parallel.
The two guide members 23 are connected to each other by an upper girder 21 and a lower girder 22 arranged in a direction orthogonal thereto.
In this example, a square steel pipe is adopted as the guide member 23. However, the present invention is not limited to this, and when the slide member 12 is a column, the guide member 23 may be a cylinder. In short, the internal shape only needs to correspond to the external shape of the slide member 12.

<4> Elevating mechanism.
The elevating mechanism 30 is a member that lifts and lowers the elevating unit 10.
In this example, a combination of a chain block 31 and a chain 32 is employed as the lifting mechanism 30.

<4.1> Chain block.
The chain block 31 is a device that can lift an object of several tons by human power by rotating a gear in the main body with the chain 32. Since the mechanism of the chain block 31 is known, it will not be described in detail here.
The chain block 31 is suspended from a rib provided on the upper beam 21 of the support portion 20.
The chain 32 is bridged between the chain block 31 and a rib provided on the lower frame 13 of the elevating unit 10, and the operation end is turned up to the ground.
The chain block 31 can be replaced with one having an appropriate capacity according to the weight of the belt conveyor A and the support portion 20.

[How to use the belt conveyor lifting device]
Then, the usage method of the belt conveyor raising / lowering apparatus 1 of this invention is demonstrated in detail.
In this example, when there is a space below the belt conveyor A, an operation for supporting the belt conveyor A from below and raising it to a predetermined height will be described.
Specifically, for example, the belt conveyor A that has been fed rearward while the tailpiece carriage is advanced is lifted from below and replaced with a bracket provided on the hole wall.

<1> Arrangement of framework scaffold.
The frame scaffold B is disposed below the belt conveyor A.

<2> Connection with framework scaffold.
The belt conveyor lifting device 1 is connected to the frame scaffold B.
The upper girder 21 side of the support part 20 is arranged upward, the lower girder 22 side is arranged downward, and both ends of the upper girder 21 are connected to the upper handrail of the frame scaffold B and both ends of the lower girder 22 are connected to the lower handrail. To do.

<3> Raising and lowering part.
An operator operates the chain 32 of the chain block 31 from the ground and pulls the chain 32 upward. As a result, the lower frame 13 is lifted upward, and the entire lifting unit 10 is raised via the lower frame 13.
When the cradle 11 of the elevating unit 10 reaches the lower part of the belt conveyor A frame, the belt conveyor elevating device 1 directly supports the load of the belt conveyor A (FIG. 2).
As it is, the raising / lowering part 10 is raised to the predetermined installation height of the belt conveyor A (FIG. 3).

<4> Replacement of belt conveyor.
Using an aerial work platform or the like, the belt conveyor A is replaced with a bracket that is previously set at a predetermined height of the hole wall.
This work may be performed using the frame scaffold B.

<5> Removal of lifting device.
The chain 32 is operated to extend the chain 32 and lower the elevating unit 10. Thereby, the load of the belt conveyor A is supported by the bracket.
The belt conveyor lifting device 1 is removed from the frame scaffold B and both are removed.

[Example of other lifting mechanism]
In the first embodiment, the chain block 31 is used for the elevating mechanism 30, but the present invention is not limited to this. Instead of the chain block 31, for example, an electric winch, a hydraulic winch, a gear mechanism, a motor mechanism, or the like can be adopted.
In short, any mechanism may be used as long as the belt conveyor A can be easily lifted / lowered by lifting / suspending the lifting / lowering unit 10 from the ground by an operator's operation.

[Example of supporting part becoming independent]
In Example 1, although the support part 20 was attached and used for the frame scaffold B, it is not restricted to this. For example, if a leg part is provided in the support part 20 and it becomes independent, the belt conveyor raising / lowering apparatus 1 can also be used alone.
In addition, you may use the belt conveyor raising / lowering apparatus 1 attached to various mounts and heavy machines.

[Example of leaving the belt conveyor lifting device]
In the first embodiment, the belt conveyor 10 is replaced with a bracket in the mine, and the belt conveyor lifting device 1 is removed. However, the belt conveyor 10 can be left as it is and used as a support for the belt conveyor A as it is.
In this case, the belt conveyor A can be given an arbitrary inclination by individually setting the heights of the plurality of belt conveyor lifting devices 1.
Moreover, the height and inclination of the belt conveyor A can be easily changed according to the change of the work process.

[Example of electronic control of belt conveyor lifting device]
In the example in which the belt conveyor lifting / lowering device 1 according to the fourth embodiment is left, the plurality of belt conveyor lifting / lowering devices 1 can be connected to an electronic computer and collectively controlled.
In this example, an individual computer capable of controlling the driving of the lifting mechanism 30 is connected to each belt conveyor lifting device 1, and a plurality of individual computers are connected to the management computer by wire or wirelessly.
By operating the management computer, the individual computers can be controlled and the respective belt conveyor lifting devices 1 can be lifted and lowered to an arbitrary height.
According to this mechanism, for example, CAD data is used to automatically calculate the installation height of each belt conveyor lifting device 1 and the inclination of the belt conveyor A, which are necessary for construction, and collectively by operation of a management computer. The arrangement can be changed.

DESCRIPTION OF SYMBOLS 1 Belt conveyor raising / lowering device 10 Lifting part 11 Base 12 Slide material 13 Lower frame 20 Support part 21 Upper girder 22 Lower girder 23 Guide material 30 Lifting mechanism 31 Chain block 32 Chain A Belt conveyor B Frame scaffolding

Claims (2)

In the tunnel construction, a belt conveyor lifting device for lifting and lowering a continuous belt conveyor extended in the longitudinal direction of the tunnel,
An elevating part, a support part, and an elevating mechanism;
The elevating unit includes a pedestal for supporting the belt conveyor from the lower part, two substantially parallel slide members connected to the cradle at the upper part, and a lower frame connected to the lower part of the two slide members, With
The support portion includes two guide materials that hold the two slide materials slidably up and down, and a girder that connects the two guide materials substantially parallel to each other.
The elevating mechanism is a combination of a chain block attached to the beam member and a chain spanned between the chain block and the lower frame, and is capable of lifting the lower frame. ,
Belt conveyor lifting device. The belt conveyor lifting device according to claim 1, wherein the support unit is connectable to a frame scaffold, and can move the belt conveyor up and down with support from the frame scaffold.

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