JP3261576B2 - Conveyor belt support mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for supporting a conveyor belt in a belt conveyor, and more particularly to an automatic centering function for adjusting the deviation of the conveyor belt.
The present invention relates to a conveyor belt support mechanism.

[0002]

2. Description of the Related Art As shown in FIG. 6, in the transfer of excavated debris in a tunnel construction (developing debris), there is a technique for performing deviated debris by disposing a continuous belt conveyor 1 'over the entire line of a tunnel 60. Known,
A technique is also known in which the continuous belt conveyor 1 ′ is passed through the center 61 so that a lining operation can be performed simultaneously with a shearing operation (Japanese Patent No. 28998).
No. 80). Here, the continuous belt conveyor is a type of a belt conveyor in which an endless conveyor belt is looped between a leading pulley and a trailing pulley pivotally supported by a conveyor frame. The remaining portion of the conveyor belt having a length dimension that can be accommodated is accommodated in a cassette at the rear end portion, and the portion can be sequentially stretched by a necessary length dimension during setup change.

[0003] In this continuous belt conveyor, when the center cores of the front pulley and the rear pulley are not protruded, or when the continuous belt conveyor is inclined due to poor ground at the foot where it is installed, the conveyor belt is not used. May cause bias. When the conveyor belt shifts in this way, the conveyor belt meanders, and as a result, the running resistance of the conveyor belt increases, conveyed excavation debris falls from the conveyor belt, the conveyor belt is damaged, and the conveyor belt is damaged. Various disadvantages occur in that the rollers supporting the belt are worn. Therefore, in a conventional continuous belt conveyor, a pedestal that supports the conveyor belt and has an automatic centering function for automatically correcting the deviation of the conveyor belt has been provided.

As a specific example of such a gantry, a lower gantry having a return roller for supporting a return belt of a conveyor belt from below and having an automatic centering function will be described (see FIG. 5). The lower gantry 30 ′ is rotatably provided above a support 50 projecting from the lower surface of the conveyor frame 2 and spanning between the left and right conveyor frames 2, and is located on the front side in the belt traveling direction (double arrow). And a pair of side rollers 32, 32 at both ends on the rear side. The return roller 31 supports the return belt 3b from below, and the pair of side rollers 32, 32 It comes into contact with the edge of the return belt 3b whose position is shifted.

The self-aligning function of the lower gantry is exhibited by the following procedure (see FIG. 4). (1) When the return belt 3b located at the center C of the conveyor is shifted to the right as shown by a two-dot chain line (arrow) as shown by the solid line, the return belt 3b is moved to the right side roller 32 (arrow). , And the entire lower frame is pushed and rotated counterclockwise as shown by a two-dot chain line (arrow). (2) Here, since the side roller 32 is provided at a position different from the center axis O of the return roller 31 in a plan view, the entire lower gantry performs a swiveling motion about the center axis O. The return belt 3b is raised clockwise as shown by the solid line (arrow), and returns to the center C of the conveyor as shown by the solid line (arrow). The return belt 3b that has returned to the center C of the conveyor is maintained at the position of θ = 0 °, which is the position where the running resistance is the least.

[0006]

However, the frame having the self-aligning function as described above has the following disadvantages (see FIG. 6). That is, since the lower gantry 30 ′ is rotatably provided above the support 50 protruding from the lower surface of the conveyor frame 2,
The vertical width T of the continuous belt conveyor 1 'is increased. Here, since the space S in the center 61 (section B) through which the continuous belt conveyor 1 'passes is narrow, the continuous belt conveyor 1' is in a state where the support 50 projects downward.
Cannot be passed through the center 61.
Therefore, in order to allow the continuous belt conveyor 1 ′ to pass through the center 61, the support 50 (including the lower gantry 30 ′, the return roller 31, and the side rollers 32) attached in front of the center 61 (A section) is In a state where the support 50 has been once removed, it must be passed through the inside of the center 61 (part B), and the support 50 must be attached again behind the center 61 (part C). Such an operation is very time-consuming, and requires a
A situation may occur in which the user forgets to attach the support 50 at the rear (C part).

Accordingly, an object of the present invention is to provide a conveyor belt support mechanism capable of saving space (narrowing the vertical width) while having a self-aligning function as in the prior art. .

[0008]

SUMMARY OF THE INVENTION The present invention is provided to solve the above-mentioned problem ( see, for example, FIGS. 1 and 2). A mechanism for supporting an endless conveyor belt 3 looped between a pulley and a rear end pulley. The conveyor belt 3 is fixed to a handle 2a protruding above the conveyor frame 2 so that the conveyor belt 3a of the conveyor belt 3 is moved. An upper gantry 20 having a carrier roller 21 supported from below; and / or a return belt 3b rotatably hung below the upper gantry 20 so as not to protrude from the lower surface of the conveyor frame. Conveyor belt, comprising: a lower frame 30 having a self-aligning function and a return roller 31 for supporting the roller from below. Di mechanism 10 ".

That is, the present invention is characterized in that the lower gantry 30 having the self-centering function is rotatably suspended below the upper gantry 20 fixed to the conveyor frame 2 via the bearing 33. There is. According to this, the lower frame 30
Is provided so as to be rotatable, and has a self-aligning function as in the related art, while providing the lower gantry 30 by suspending it from the upper gantry 20 so as not to protrude from the lower surface of the conveyor frame 2, thereby saving space. (The upper and lower widths can be narrowed).

Further, the present invention (see, for example, FIG. 3) discloses an "endless conveyor belt 3 hung between a front pulley and a rear pulley pivotally supported by a conveyor frame 2 in a belt conveyor 1". A supporting mechanism 40, which is fixed to a handle 2a protruding above the conveyor frame 2, and a bearing above the supporting frame 40.
Roller 21 that is rotatably provided through the conveyor belt 3 and supports the conveyor belt 3a of the conveyor belt 3 from below.
An upper gantry 20A having a self-aligning function; and / a rotatably suspended via a bearing below the support gantry 40 so as not to protrude from the lower surface of the conveyor frame. Return belt 3 in
comprising a return roller 31 for supporting the b from below, the lower platform 30 having a self-aligning function, / only contains, the upper
The bearing that rotatably supports the gantry,
A conveyor belt support mechanism 10 ", which also serves as the bearing for rotatably supporting the gantry .

[0011] Namely, the present invention, the lower platform 30 having a self-aligning feature, the support cradle 40 which is fixed to the conveyor frame 2, via a bearing 33 suspended rotatable (i.e. before and Symbol onset bright In addition to this, the upper gantry 20A having the self-centering function is rotatably provided via a bearing 23 above the support gantry 40 fixed to the conveyor frame 2. According to this, the lower gantry 30 is rotatably provided, so that the lower gantry 30 is suspended from the support gantry 40 so as not to protrude from the lower surface of the conveyor frame 2 while having the self-centering function as in the related art. by providing Te, space saving with (narrow vertical width) can be (that is, before Symbol onset Ming and similar effect), also by providing rotatably upper frame 20A, a self-aligning feature Can be included.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a conveyor belt support mechanism according to the present invention will be described in detail with reference to the drawings.

1. Assumption (see FIG. 1) The conveyor belt support mechanism 10 according to the present invention is configured such that the belt conveyor 1 loops between a front pulley (not shown) pivotally supported by a conveyor frame 2 and a rear pulley (not shown). This is a mechanism for supporting the endless conveyor belt 3 to be used. Here, the type of the belt conveyor 1 does not matter, but includes, for example, the above-mentioned continuous belt conveyor 1 ′ in addition to a general one. Conveyor frame 2
Consists of left and right square pipes extending in the direction in which the belt conveyor 1 extends, and has a handle 2a projecting upward at an appropriate interval at which the conveyor belt support mechanism 10 is to be provided. In the conveyor belt 3, the upper belt is a conveyor belt 3a for placing and transporting an object (for example, excavation waste), and the lower belt is a return belt 3b.
It is.

2. First Embodiment (See FIGS. 1 and 2) The conveyor belt support mechanism 10 according to the first embodiment includes, in addition to the above premise, (1) an upper gantry 20 and (2) a lower gantry 30. It is a thing.

(1) Upper frame 20 The upper frame 20 has a carrier roller 21 and is fixed to the conveyor frame 2. Specifically, the upper gantry 20 includes a main body 20a made of channel steel having a length extending in the width direction of the belt conveyor 1, and flanges 20b provided at both ends thereof.
Is stretched between the left and right conveyor frames 2, and the flange portion 20b is fixed to the conveyor frame 2 by being attached to the handle 2a using a plurality of L-shaped bolts 2b. Note that the upper gantry 20 in the present embodiment does not have an automatic centering function.

The carrier roller 21 is provided on the conveyor belt 3.
The support belt 3a is supported from below. Specifically, the carrier roller 21 includes inclined rollers 21a, 21a provided at both ends, and a central roller 21b provided therebetween, and is mounted on the upper gantry 20 via a bracket, and the transported object is The transport belt 3a that is placed and deformed into a gutter shape is supported from below. Note that the carrier roller 21 may be,
It may be a single cylindrical flat roller.

(2) Lower gantry 30 The lower gantry 30 is provided with a return roller 31, is rotatably provided below the upper gantry 20, and has an automatic centering function. Specifically, the lower gantry 30 is made of channel steel having a length that fits inside the width of the belt conveyor 1, and a bearing 33 is attached to a hole provided in the center thereof, and the lower gantry 30 is provided in the center of the upper gantry 20. By mounting the bearing 33 in the hole, the upper base 2
0 is rotatably hung below. Here, from the viewpoint of space saving, it is preferable that the lower frame 30 is provided so as not to protrude from the lower surface of the conveyor frame 2 (particularly, see FIG. 2).

The return roller 31 is provided on the conveyor belt 3.
Is supported from below by the return belt 3b. More specifically, the return roller 31 is formed of a single cylindrical flat roller, and is attached via a bracket to the lower gantry 30 at the center on the front side in the belt traveling direction (double arrow) to attach the return belt 3b. Support from below.

The lower frame 30 further includes a pair of side rollers 32,32. Specifically, the side roller 32
Consists of one cylindrical vertical roller,
Are attached via brackets to both ends on the rear side in the belt traveling direction (double arrow), and come into contact with the edge of the displaced return belt 3b. The position where the side roller is provided is not limited to the rear side in the belt traveling direction, and may be the front side. In addition, since there is a lower base having an automatic centering function without a side roller, the side roller is not an essential component of the present invention.

(3) Function / Effect Since the lower gantry 30 in this embodiment is provided rotatably, it has the same operation as the conventional lower gantry 30 'described above (see FIG. 4), and returns. When the belt 3b is shifted, the centering function is exhibited. In addition, since the lower gantry 30 is suspended from the upper gantry 20 so as not to protrude from the lower surface of the conveyor frame 2, space can be saved.

3. Second Embodiment (Refer to FIG. 3) In addition to the above-mentioned premise, the conveyor belt support mechanism 10 according to the second embodiment includes (1) a support gantry 40, (2) an upper gantry 20A, and (3) a lower gantry. 30.

(1) Support frame 40 The support frame 40 is fixed to the conveyor frame 2 and rotatably supports the upper frame 20A and the lower frame 30. Specifically, the support base 40 is made of a flat plate having a length extending in the width direction of the belt conveyor 1, is bridged between the left and right conveyor frames 2, and uses a plurality of L-shaped bolts 2b for the handle 2a. By being attached, it is fixed to the conveyor frame 2.

(2) Upper gantry 20A The upper gantry 20A has a carrier roller 21, is rotatably provided above the support gantry 40, and has an automatic centering function. Specifically, the upper gantry 20A is made of channel steel having a length that fits inside the width of the belt conveyor 1, and a bearing 23 is provided in a hole provided in the center thereof.
Is mounted, and the bearing 23 is mounted in a hole provided in the center of the support frame 40, so that the support frame 40 is rotatably provided above the support frame 40. The carrier roller 21 is the same as in the first embodiment.

Further, the upper gantry 20A has a pair of side rollers 22,22. Specifically, the side roller 2
2 is a single cylindrical vertical roller,
It is erected at both ends on the rear side in the belt traveling direction (double arrow) at 0A, and comes into contact with the edge of the transport belt 3a which is displaced. The position where the side roller is provided is not limited to the rear side in the belt traveling direction, and may be the front side. In addition, since there is an upper mount having an automatic centering function without a side roller, the side roller is not an essential component of the present invention. For example, the carrier roller may be provided with a brake roller provided in parallel with the center axis of the carrier roller as viewed in plan, or may be provided with a tapered roller in which the carrier roller itself tapers toward both ends.

(3) Lower gantry 30 The lower gantry 30 is rotatably provided below the support gantry 50, that is, the lower gantry 30 is suspended and supported by the support gantry 50. Same as the form. Note that a bearing 33 that rotatably supports the lower base 30 is provided.
Is a bearing 2 that rotatably supports the upper gantry 20A.
3 and can also be used.

(4) Function / Effect The lower gantry 30 in this embodiment has the same function (self-aligning function) as the first embodiment, and has the same effect (space saving). In addition, since the upper gantry 20A in this embodiment is rotatably provided, it has the same effect as the conventional lower gantry 30 'described above (see FIG. 4), and the transport belt 3a is offset. Exhibits a self-centering function when raised. That is, the present embodiment is particularly significant in that the upper gantry 20A can also have a self-centering function by being rotatably provided.

[0027]

According to the conveyor belt supporting mechanism of the present invention constructed as described above, in particular, the lower gantry is rotatably suspended on the upper gantry or the supporting gantry. It has a remarkable effect that it is possible to save space (narrow the vertical width) while having a heart function.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a conveyor belt support mechanism according to a first embodiment of the present invention.

FIGS. 2A and 2B are diagrams showing a conveyor belt support mechanism according to the first embodiment of the present invention, wherein FIG. 2A is a front view and FIG. 2B is a side view.

FIG. 3 is an exploded perspective view showing a conveyor belt support mechanism according to a second embodiment of the present invention.

FIG. 4 is a schematic plan view showing the operation of the self-centering function in the conveyor belt support mechanism.

5A and 5B are diagrams showing a lower gantry in a conventional conveyor belt support mechanism, wherein FIG. 5A is a perspective view and FIG. 5B is a front view.

FIG. 6 is a schematic side view showing a conventional conveyor belt support mechanism.

[Explanation of symbols]

 Reference Signs List 1 belt conveyor 1 'continuous belt conveyor 2 conveyor frame 2a handle 2b L-shaped bolt 3 conveyor belt 3a transport belt 3b return belt 10 conveyor belt support mechanism 20 upper mount 20A upper mount (second embodiment) 20a body 20b flange 21 Carrier roller 21a Inclined roller 21b Central roller 22 Side roller 23 Bearing 30 Lower mount 30 'Lower mount (conventional) 31 Return roller 32 Side roller 33 Bearing 40 Support mount 50 Support body 60 Tunnel 61 centimeter

──────────────────────────────────────────────────の Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B65G 15/00-15/28 B65G 15/60-15/64 B65G 39/00-39/20

Claims (1)

(57) [Claims] 1. A mechanism for supporting an endless conveyor belt looped between a front pulley and a rear pulley pivotally supported by a conveyor frame in a belt conveyor, wherein the belt protrudes above the conveyor frame. A support frame fixed to a handle, and a carrier roller rotatably provided on the upper side of the support frame via a bearing to support a conveyor belt of the conveyor belt from below, and having a self-centering function. A gantry, and a return roller that is rotatably suspended below the support gantry via a bearing so as not to protrude from the lower surface of the conveyor frame and that supports a return belt of the conveyor belt from below. , said bearing viewed contains a lower frame, a having an automatic centering function, supporting the upper frame rotatably,
The bearing that rotatably supports the lower frame.
A conveyor belt support mechanism that is also used.