JP3059210U - Vertical shaft crusher rotor shaft support structure - Google Patents

Abstract

(57) [Problem] It is an object of the present invention to make it possible to easily replace a power transmission belt that rotationally drives a rotor shaft of a vertical crusher for crushing waste. A lower end bearing for supporting a rotor vertical shaft of a vertical crusher is supported by a base frame having a rectangular space, and the lower end bearing has an outer diameter larger than a short side of the rectangular space. A notch surface 8b is formed on the outer periphery of the bearing 8 so that the parallel space is narrower than the short side, and the bearing 8 is attached to the base frame 11 so as to be rotatable around the shaft. I have.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to a rotor shaft support structure for a vertical crusher, and more particularly, to an improvement of a crusher used for a municipal solid waste disposal device.

[0002]

[Prior art]

 Conventionally, when treating municipal solid waste and the like, the waste is crushed to a certain size or less before being treated in an incinerator or a disposal site.

[0003] As this crushing processing apparatus, there is an apparatus that rotates a rotor in an inverted conical cylindrical shell whose upper side is open, and pulverizes input dust between a number of grinders provided on the outer periphery of the rotor and an inner surface of the shell. Are known.

[0004]

[Problems to be solved by the invention]

 By the way, the rotor of the crusher is transmitted by winding a belt around the pulley fixed to the rotor and coaxially with the pulley of the electric motor. It needs to be replaced every time.

Conventionally, in this belt exchange, a shaft is pulled upward by a lifting device, a gap for belt exchange is made between the shaft and a bearing, the belt is passed through, the belt is wound around the pulley, and the shaft is returned to its original position. It was by returning to the position and fixing it to the rotor or pulley.

However, in the case of the above-mentioned means, the shaft is released from the rotor or the pulley and lifted upward, so that the work becomes large, and the belt to be exchanged dive below the lifted and supported shaft or the suspended and supported pulley. There was a problem that the work was very dangerous because it could be wound around.

[0007] This invention solves the above problem, and provides a rotor shaft support structure of a vertical crushing machine which can eliminate the above-described large-scale work, eliminate the danger associated with the work, and quickly replace the belt. The task was to do.

[0008]

[Means for Solving the Problems]

 In the rotor shaft support structure of the vertical crusher of the present invention, the lower end bearing supporting the rotor vertical shaft of the vertical crusher is supported by a base frame having a rectangular space, and the lower end bearing is formed of the rectangular space. A notch surface having an outer diameter larger than the short side and having a parallel space narrower than the short side is formed on the outer periphery of the bearing, and the bearing is attached to the base frame so as to be rotatable around the shaft. It was done.

According to the present invention, if the rotor or pulley is slightly lifted up together with the shaft and supported by a wood block or the like, the shaft load applied to the bearing becomes zero, and the bearing is rotated around the shaft by 90 ° so that the lower part of the base frame is lowered. The belt can be wound around by inserting the belt using the space at the shaft end created at this time.

[0010] Accordingly, it is easy to lift and support a heavy shaft, and it is only necessary to support and remove a bearing which is lighter than the shaft, so that belt replacement can be easily and safely performed. Further, in the rotor shaft support structure of the vertical crusher described above, a pedestal plate capable of supporting the rotor vertical shaft from the lower end is detachable on a base frame supporting the lower end bearing.

Therefore, when the lower end bearing of the rotor shaft is removed for belt replacement, the shaft is supported from the lower end by the base plate, and the rotor and the like can be temporarily supported in the meantime. The work of hanging and supporting is not required, and the work is simplified.

[0012]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described. FIG. 1 is a sectional view of a main part showing a rotor shaft support structure of a vertical crusher according to an embodiment of the present invention, and FIG. 2 is a plan view of a main part of FIG.

In FIG. 1, 1 indicates a vertical crusher, and 2 indicates a shaft of the vertical crusher 1. Attached to the shaft 2 is a knocker 3 for hitting and crushing the refuse, and a rotor 5 for crushing the refuse in a gap between the casing 4 around the hopper and discharging the crushed refuse below the rotor 5. The sweeper 6 is fixed coaxially.

The shaft 2 is rotatably supported around the shaft by an upper bearing 7 and a lower bearing 8 below the sweeper 6, and a pulley 9 is provided between the upper bearing 7 and the lower bearing 8 of the shaft 2. In the figure, reference numeral 9a denotes a transmission belt wound around the pulley 9, which is wound around a pulley of an electric motor (not shown).

As shown in FIG. 2, the lower end bearing 8 has a shape in which both sides of a mounting flange portion 8b formed at the base of the cylindrical body 8a are cut off by parallel cutout surfaces 8c, 8c. It is supported by a base frame 11 having a space 10.

The shape relationship between the rectangular space 10 of the base frame 11 and the bearing 8 is such that the diameter D of the outer periphery of the flange portion 8b is larger than the short side 10a of the rectangular space 10 as clearly shown in FIG. The parallel space S between the notched surfaces 8c, 8c is made shorter than the short side 10a of the rectangular space 10, and the rectangular space is formed by rotating the bearing 8 by 90 ° from the position shown in FIG. It is made possible to escape from 10.

In FIG. 2, the base frame 11 is formed of a square pipe, a steel die, or the like, and the bearing 8 and the base frame 11 are fixed by bolts 11 a. Next, a belt replacement operation of the rotor shaft support structure of the vertical crusher of this embodiment will be described.

FIG. 3 et seq. Are process explanatory diagrams showing a belt replacement operation. FIG. 3 is an initial process, FIG. 4 is a plan view of a main part showing a bearing removal state, and FIGS. FIG. 7 is a side sectional view showing the same state, and FIG. 8 is a side sectional view showing a state where a new belt is inserted.

First, as shown in FIG. 3 and FIG. 4, stopper plates 12, 12 are installed between short sides 10 a of the opening 10 of the base frame 11 on rectangular spaces 10 on both sides of the bearing 8, and bolts 12 a, 12a (FIG. 4).

The bolts 13, 13 are screwed to the stopper plate 12 with nuts 14, and the pedestal plate 15 is fixed to the lower ends of the bolts 13 with nuts 16. Then, as shown in FIG. 3, a jack 17 is installed between the pedestal plate 15 and the shaft 2, the shaft 2 is moved upward by the jack 17, and a gap between the pulley 9 fixed to the shaft 2 and the base frame 11 is formed. In this case, a wooden board 18 is inserted so that the load of the shaft 2 is not applied to the bearing 8.

The bolts 11 a... 11 a to which the bearing is fixed are removed in this way, and the fixing force of the bearing 8 to the base frame 11 is released. Therefore, at this time, the bearing 8 can freely rotate relative to the shaft 2. Also, the pedestal plate 15 becomes unnecessary, and is removed together with the jack 17.

Next, the bearing 8 is rotated by 90 ° while being fitted to the shaft 2 as shown in FIG. At this time, if necessary, the bolt 12a is removed and the stopper plate 12 is removed, so that the bearing 8 can be easily rotated.

As shown in FIG. 5, the space between the cutout surfaces 8 c, 8 c of the flange portion 8 b of the bearing 8 is smaller than the short side 10 a of the rectangular space 10, so that the space 10 can pass through the space 10. Becomes

Next, as shown in FIG. 6, both side bolts 13a are inserted into the bolt holes 8d on both sides of the flange portion 8b of the bearing 8, and a center bolt 13b (FIG. 7) is inserted into the center bolt hole 8e. The detached pedestal plate 15 is attached to the lower ends of both side bolts 13a and the center bolt 13b, and fixed with nuts 14b and 14c.

As shown in FIG. 7, the center bolt 13b is fixed between the flange portion 8b and the pedestal plate 15 with a nut 14a, and the side bolts 13a and 13a are connected to the stopper plate 12 as shown in FIG. , And the upper end is projected upward, and nuts 14c, 14c are screwed to the projected portion.

Then, as shown in FIG. 7, a jack 17 is inserted between the pedestal plate 15 and the shaft end 2a, and when the jack 17 is extended, the pedestal plate 15 is relatively pushed down, and the center bolt The bearing 8 is pulled downward from the shaft end 2a via 13b.

When the bearing 8 comes off from the shaft end 2a, the bearing 8 falls, but the nuts 14c, 14c screwed to the both side bolts 13a, 13a are hooked on the stopper plate 12 to support the bearing 8 without dropping. I do.

Therefore, as shown in FIG. 8, the support base 19 is disposed below, and the nuts 14 c are loosened to loosen the bearings 8 on the support base 19. Then, after the bearing 8 is lowered, the belt 9 a is inserted through the space S formed between the shaft 8 and the belt 9 and wound around the pulley 9.

After the necessary number of belts 9a have been mounted, the nuts 14c screwed to the side bolts 13a, 13a are tightened to the side bolts 13a, 13a. The pedestal plate 15 rises, and accordingly, the bearing 8 also rises in the opposite direction to the above, and is fitted again with the shaft 2, and is raised to the original fitting position.

As a result, the bearing is fitted to the shaft 2 as before, and thereafter the bearing 8 is rotated by 90 ° and fixed to the base frame in the reverse procedure. In the above-described embodiment, the case where the shaft 2 is lifted up and the wood board 18 is inserted and supported below the pulley 9 has been shown. Alternatively, the pulley 9 may be suspended from an upper girder. .

As a mounting structure of the side bolt 13a and the center bolt 13b when the bearing 8 is detached from the shaft 2 and supported, as shown in FIG. Although the case in which the nut 14c fixed to the plate 15 and screwed to the upper end of the both-side bolt 13a to prevent the falling is described above, instead of fixing the above-mentioned both-side bolt 13a, as shown in FIG. Is fixed to the stopper plate 12 with a nut 14c, and another nut 14d is screwed into an intermediate portion so that the both side bolts 13a can freely move in the axial direction relative to the pedestal plate 15. The upper end of 13b may be fixed to the flange 8b of the bearing 8 with a nut 14a.

With this configuration, the trouble of fixing the side bolts 13a to the pedestal plate 15 by the nuts 14b (FIG. 7) is omitted, and the falling bearing 8 is received by the intermediate nut 14d. By loosening 14d, it can be gently lowered onto the support base 19.

[0033]

[Effect of the invention]

 As described above, according to the rotor shaft support structure of the vertical crusher of the present invention, when the belt is wound around the pulley, the shaft is supported without cutting the shaft, and the bearing is supported from the shaft end. Since the space for replacing the extraction belt is formed, the shaft can be safely supported and the belt can be easily replaced because the labor for moving the bearing is small.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a rotor shaft support structure of a vertical crusher according to an embodiment of the present invention.

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

FIG. 3 is an explanatory diagram showing an initial step of a belt replacement operation.

FIG. 4 is a plan view of an essential part showing a situation where a bearing is removed.

FIG. 5 is a main part plan view showing the situation of removing the bearing following FIG. 4;

FIG. 6 is a plan view of a main part showing a situation where the bearing is removed following FIG.

FIG. 7 is a sectional view taken along line XX of FIG. 6;

FIG. 8 is a side sectional view showing a situation where a new belt is inserted.

FIG. 9 is a cross-sectional view of a main part showing another configuration example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vertical crusher 2 ... Shaft 3 ... Knocker 4 ... Casing 5 ... Rotor 6 ... Sweeper 7 ... Upper bearing 8 ... Lower end bearing 8b ... Notch surface 9 ... Pulley 10 ... Space 10a ... Short side of space 10b ... Space Long side 11: Base frame

Continuing on the front page (72) Inventor Takumi Otani 2293 Address, Habu-cho, Inshima-shi, Hiroshima Pref. (72) Inventor Yoshinori Suzuki 1 Immediately-located 2293, Habu-cho, Innoshima-shi, Hiroshima In-Imex Corporation

Claims (3)

[Utility model registration claims] 1. A lower end bearing for supporting a rotor vertical shaft of a vertical crusher is supported by a base frame having a rectangular space, and the lower end bearing has an outer diameter larger than a short side of the rectangular space. A rotor shaft supporting structure for a vertical crusher, wherein a notch surface is formed on the outer periphery of the shaft so that a parallel interval is narrower than the short side, and the bearing is rotatably mounted around the shaft with respect to the base frame. 2. The rotor of a vertical crusher according to claim 1, wherein a base plate supporting a lower end bearing of the rotor is detachably mounted on a base frame supporting a lower end bearing in the rotor support structure of the vertical crusher according to claim 1. Shaft support structure. 3. A support member for preventing a pulley from falling between a lower surface of a pulley mounted on a rotor vertical shaft and a mounting base frame of a lower end bearing in the rotor support structure of the vertical crusher according to claim 1 or 2. The rotor shaft support structure of the vertical crusher that can be inserted.