JPH0752089Y2 - Support structure of tail pulley in belt conveyor - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tail pulley support structure provided with a belt meandering adjustment function in a belt conveyor.

[0002]

2. Description of the Related Art Generally, a belt conveyor winds a belt around a tail pulley provided at both ends of a frame and a drive pulley attached to the frame to rotate the belt endlessly. The belt may meander, and the belt may be displaced outward from the width of the tail pulley.

For example, Japanese Utility Model Laid-Open No. 60-154308 discloses a support structure for a tail pulley in a belt conveyor that facilitates the connection with other equipment of the belt conveyor for adjusting the meandering of the belt and the operation of adjusting the meandering. (Illustrated in FIG. 10).

As shown, the belt conveyor 101 has a pair of frames 102, 103 arranged in parallel,
A pair of tail brackets 104 and 105 are respectively provided at the ends of the pair of frames 102 and 103 so that they can be inserted and fixed, and face each other. The figure shows a state in which the tail brackets 104 and 105 are extracted from the frames 102 and 103.

Reference numeral 106 denotes a tail pulley, which is supported by a shaft 106A. Bearing holes 107, 107 (only one is shown) are formed in the tail brackets 104, 105, and wrench operating recesses 108, 108 (only one is shown) are formed adjacent to the bearing holes 107, 107.
Are formed.

The shaft 106A of the tail pulley 106 is supported in the bearing holes 107, 107 of the tail brackets 104, 105, and the tail pulley 106 is suspended and supported by the tail brackets 104, 105.

[0007]

However, in the conventional support structure of the tail pulley in the belt conveyor, the tail pulley 106 is attached to the tail brackets 104, 1.
When removing the tail brackets 104 and 105 from the bearing holes 107 and 107 of 05 and performing necessary processing such as maintenance and inspection, it is necessary to disassemble the tail brackets 104 and 105 from the frames 102 and 103, respectively. Further, in order to assemble the tail pulley 106 and the new tail pulley 106 that have been subjected to a predetermined process, it is necessary to attach the tail brackets 104 and 105 to the frames 102 and 103 as a preparatory work, which is troublesome. In short, in order to disassemble and assemble the tail brackets 104 and 105 of the tail pulley 106, the tail brackets 104 and 105 and the frame 10 must be assembled.
There is a problem that the belt conveyor 101 needs to be disassembled and assembled as a whole because the disassembling and assembling work of Nos. 2 and 103 is required, and a large number of man-hours are required.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to support a tail pulley in a belt conveyor which enables quick and easy removal and installation of the tail pulley with respect to the tail bracket. Is to provide the structure.

[0009]

DISCLOSURE OF THE INVENTION The present invention comprises a pair of frames arranged in parallel, and a pair of tail brackets attached to opposite ends of the pair of frames, respectively.
In a belt conveyor including a tail pulley that is supported by being bridged over a pair of tail brackets, a bearing recess is formed in the tail bracket from its inner part to its side end, and the tail bracket is adjacent to the bearing recess on its outer part. A shaft retainer that forms a wrench operation recess, supports the tail pulley shaft in the tail bracket bearing recess, and presses the tail pulley shaft supported in the bearing recess recess of the tail bracket and formed in the bearing recess. The block is detachably seated, and a first screw hole and a second screw hole are provided between the bearing recess and the wrench operating recess of the tail bracket, and one end of the first screw hole is inside the bearing recess. Of the first push screw rod that is brought into contact with the tail pulley shaft and operates the other end from the wrench operating recess to adjust the tail pulley shaft in the longitudinal direction. Mating / mounting, one end engages / disengages with the wedge portion of the shaft retainer block in the second screw hole, and the other end operates from the wrench operating recess to press the axle retainer block against the shaft of the tail pulley. It is characterized in that the second pushing screw rod is screwed and mounted.

[0010]

According to the present invention, when the belt conveyor is used, the shaft of the tail pulley is pressed by the shaft pressing block in the bearing recess of the tail bracket, and the shaft of the tail pulley is fixed to the tail bracket.

That is, one end of the first pushing screw rod presses the shaft of the tail pulley, and the shaft of the tail pulley is longitudinally adjusted in the bearing recess. Further, by engaging one end of the second pressing screw rod with the wedge portion of the shaft pressing block, the shaft pressing block presses the shaft of the tail pulley into the bearing recess, and the shaft of the tail pulley moves up and down in the bearing recess, for example. The direction is fixed.

Then, by loosening the second pushing screw rod, the engagement between one end of the second pushing screw rod and the wedge portion of the shaft holding block is released, and the shaft holding block is removed from the bearing recess. , The tail pulley is removed from the bearing recess.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 show a support structure of a tail pulley in a belt conveyor according to an embodiment of the present invention.

FIGS. 8 and 9 show a belt conveyor according to an embodiment of the present invention, the support structure of the tail pulley of which is shown in FIG.
3 to FIG. 3 are shown in the assembled state, and the states of the individual components are shown in FIGS. 4 to 7. 8 and 9, a belt conveyor 1 according to an embodiment of the present invention
Has a pair of frames 2 and 3 arranged in parallel, and the drive unit K is mounted on the frames 2 and 3. A pair of tail brackets 4 and 5 are attached to the ends of the pair of frames 2 and 3 so as to face each other, and a tail pulley 6 is supported by being bridged over the pair of tail brackets 4 and 5. A belt 7 is wound around the tail pulleys 6 and 6 at both ends.

Hereinafter, a structure for supporting a tail pulley in a belt conveyor according to an embodiment of the present invention will be described with reference to FIGS. 5 to 7 show the left tail bracket 5. Since the right tail bracket 4 has the same structure, its description is omitted.
The tail bracket 5 is formed into a block body, and a bearing recess 8 is formed in the tail bracket 5 from the inner portion 5A to the upper end portion 5B. A wrench operating recess 9 is formed adjacent to the bearing recess 8 on the outer side portion 5C of the tail bracket 5.

A first screw hole 10 and a second screw hole 10 are provided in a portion of the tail bracket 5 between the bearing recess 8 and the wrench operating recess 9.
Screw holes 11 are formed. A first protrusion 12 and a second protrusion 13 are provided on the rear end 5D of the tail bracket 5.

Further, FIG. 4 shows a shaft pressing block 14 used as will be described later. The shaft pressing block 14 is formed in a block shape, and the front wall surface thereof projects downward and rises backward. The slanted wedge portion 15 is formed.

1 to 3 and 8, the tail brackets 4 and 5 are fixed to the frame 2 by screwing the first projections 12 of the tail brackets 4 and 5 to the frames 2 and 3 via the bolts B. , 3 are fixed respectively.

In the bearing recesses 8 of the tail brackets 4 and 5,
The shaft 6A of the tail pulley 6 is supported, and the shaft pressing block 14 of FIG. 4 is detachably seated in the bearing recess 8 of the tail bracket 5, and the shaft pressing block 14 is
The shaft 6A of the tail pulley 6 supported in the bearing recess 8 is pressed.

A first pushing screw rod 16 is provided in the first screw hole 10.
Is screwed and mounted, and one end 16A of the first push screw rod 16
Is in contact with the shaft 6A of the tail pulley 6 in the bearing recess 8, and a wrench mounting hole 16B operated by the wrench operating recess 9 is formed at the other end, and a wrench is fitted and mounted in the wrench mounting hole 16B. Thus, the shaft 6A of the tail pulley 6 is adjusted in the longitudinal direction.

A second pushing screw rod 17 is provided in the second screw hole 11.
Is screwed and attached. One end 17A of the second pushing screw rod 17 is freely engageable with and disengageable from the wedge portion 15 of the shaft pressing block 14, and the other end is formed with a wrench mounting hole 17B which is operated from the wrench operating recessed portion 9. By operating from the operation recessed portion 9, the shaft pressing block 14 is moved to the shaft 6A of the tail pulley 6.
Press on.

In the present embodiment, however, when the belt conveyor 1 is used, the tail pulley 6 is moved by the shaft pressing block 14 in the bearing recess 8 of the tail brackets 4, 5.
The shaft 6A is pressed, and the shaft 6A of the tail pulley 6 is fixed to the tail brackets 4 and 5.

That is, by operating the wrench mounting hole 16B of the first pushing screw rod 16 with the wrench from the wrench operating concave portion 9, one end 16A of the first pushing screw rod 16 moves the shaft 6A of the tail pulley 6 to the shaft 6A. When pressed, the shaft 6A of the tail pulley 6 is adjusted in the bearing recess 8 in the longitudinal direction. As a result, the tail pulley 6 is moved to an appropriate position in the longitudinal direction and the meandering of the belt 7 is prevented.

The one end 17A of the second pressing screw rod 17 is engaged with the wedge portion 15 of the shaft pressing block 14, so that the shaft pressing block 14 presses the shaft 6A of the tail pulley 6 into the bearing recess 8. The shaft 6A of the tail pulley 6 is fixed in the bearing recess 8 in the vertical direction.

Then, by loosening the second pressing screw rod 17, the engagement between the one end 17A of the second pressing screw rod 17 and the wedge portion 15 of the shaft pressing block 14 is released, and the shaft pressing block 14 is released. Is removed from the bearing recess 8 and the tail pulley 6 is removed from the bearing recess 8. The taken out tail pulley 6 is subjected to necessary processing in maintenance, inspection, etc.,
This tail pulley or another new tail pulley 6 is attached to the tail bracket 5 again in the reverse order of the above.

According to the above-mentioned structure, the tail pulley 6 is moved by mounting or withdrawing the shaft pressing block 14 into or from the bearing recess 8 with the tail brackets 4, 5 fixed to the frames 2, 3. The tail brackets 4 and 5 can be detached and attached from the tail brackets 4 and 5 by being attached to or detached from the bearing recesses 8 and 8.
Therefore, the tail pulley 6 can be easily attached to and removed from the tail brackets 4 and 5, and the tail pulley 6 can be easily replaced and maintained.

[0027]

As described above, the present invention has a structure in which the tail pulley can be detached from and attached to the tail bracket by mounting or withdrawing the shaft pressing block into or from the recess of the bearing of the tail bracket. , The tail pulley can be easily attached / removed to / from the tail bracket, and the tail pulley can be easily replaced or maintained with the tail bracket fixed to the frame.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing an embodiment of a support structure for a tail pulley of a belt conveyor according to an embodiment of the present invention.

FIG. 2 is a plan view of the same main part.

FIG. 3 is a partial front sectional view of the same main part.

FIG. 4 is a side view of the shaft pressing block of FIG.

5 is a side view of the tail bracket of FIG. 1. FIG.

6 is a cross-sectional view taken along the line AA of FIG.

7 is a cross-sectional view taken along the line BB of FIG.

FIG. 8 is a plan view of a belt conveyor according to an embodiment of the present invention.

FIG. 9 is a side view of the belt conveyor.

FIG. 10 is a perspective view of a conventional belt conveyor.

[Explanation of symbols] 1 belt conveyor 2 frame 3 frame 6 tail pulley 6A shaft 8 bearing recess 9 wrench operating recess 10 first screw hole 11 second screw hole 14 shaft pressing block 15 wedge portion 16 first pushing screw Rod 17 Second push screw rod

Claims (1)

[Scope of utility model registration request] 1. A pair of frames arranged parallel to each other, a pair of tail brackets attached to opposite ends of the pair of frames, and a tail pulley supported by the pair of tail brackets. In the belt conveyor, the bearing recess is formed on the tail bracket from its inner side to the side end, and the wrench operating recess adjacent to the bearing recess is formed on the outer side of the tail bracket. A shaft holding block that supports the shaft of the tail pulley and has a wedge formed in the bearing recess of the tail bracket that presses the shaft of the tail pulley supported in the bearing recess is detachably seated, and the bearing recess of the tail bracket and the wrench A first screw hole and a second screw hole are provided between the operation recesses, and one end is provided in the first screw hole. The second push screw rod is brought into contact with the shaft of the tail pulley in the receiving recess, and the other end is operated from the wrench operating recess to screw and mount the first pushing screw rod for adjusting the shaft of the tail pulley in the longitudinal direction. One end engages the wedge part of the shaft retainer block in the hole.
Supporting the tail pulley in a belt conveyor, which is releasable and has a second pushing screw rod for pushing the shaft holding block against the shaft of the tail pulley by screwing and mounting the other end by operating the wrench operating recess. Construction.