JP2618348B2 - Stone crushing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the present invention, wherein the minimum diameter mixed in gravel and sand collected from mountains, lands and rivers is about 125 m.
The present invention relates to a stone crushing device for crushing cobblestones of m or more into gravel and crushing the gravel to sand.

[0002]

2. Description of the Related Art Conventionally, as a device for crushing stones for producing aggregate for concrete, a crushing device using rollers, a horizontal rotator, which crushes stones by sending the stones between a pair of left and right rotating rollers. A crushing device (impeller type crushing device) in which a rotor provided on a shaft is accommodated in a crushing chamber, and has a rotary impacting member for crushing stones by impact of an impacting member or the like protruding on the outer periphery of the rotor, and fixed. Jaw crushers, etc., that grind stones between the jaw and the exercise jaw, are used.

[0003]

Among the above-mentioned conventional crushing apparatuses, the crushing apparatus using a roller is not sufficiently durable because the material to be crushed is stone and its hardness is high. A crusher (impeller crusher) having a rotary impact member can crush stones having a diameter of about 100 mm or less, but it has been difficult to crush stones larger than that (cobblestone). With regard to the jaw crusher, a considerably loud noise is generated when the stone is crushed, which may cause noise pollution. When taking measures to prevent such noise, there is a problem that the cost of the entire apparatus is increased. The problem to be solved by the present invention is to solve the conventional problems as described above and improve the durability and repairability of the device,
The object of the present invention is to make it possible to crush even large stones such as cobblestones and to prevent noise pollution caused by the crushing sound of the stones.

[0004]

The stone crushing apparatus according to the present invention has solved the above-mentioned problems and is as follows. That is, the plurality of pressure receiving wheels 1 are supported by bearings 4 fixed to the machine frame 3 with the rotating shaft 2 of each pressure receiving wheel 1 being vertically spaced apart from each other by a predetermined distance. The rotating shafts 6 of the plurality of pressurizing rings 5 which are respectively opposed to the sides are supported by bearings 7 supported by the machine frame 3, and the plurality of pressure receiving rings 1 and the pressurizing rings 5 are subjected to the pressure receiving caterpillar belt 13. And pressurized caterpillar belts 14 are respectively stretched, the predetermined rotating shafts 2 and 6 are linked to a drive motor 17, and the bearings 7 supporting the rotating shafts 6 of the plurality of pressurized ring bodies 5 are pressed by a spring 22 to a pressure receiving wheel. The pressurizing force is applied in the body 1 direction so as to be adjustable, and a stopper 27 for receiving the pressing force acting on the bearing 7 is provided on the machine frame 3 so as to be adjustable in the left and right directions, and the opposing surface of the pressure-receiving caterpillar belt 13 and the pressurized caterpillar belt 14. The space between them will increase as the distance increases It is characterized in that setting the position of the bearings 4,7 to. A bearing 7 for supporting the rotating shafts 6 of the plurality of pressure rings 5 is supported on the machine frame 3 via a vibration isolating rubber 8, and the upper and lower surfaces of the vibration isolating rubber 8 are supported by the bearing 7 and the machine casing 3. It is desirable to fix each.

[0005]

First, the position of the stopper 27 is adjusted left and right to adjust the position of the bearing 7 of the rotary shaft 6 of the pressurizing wheel 5 to the right and left, so that the pressure receiving caterpillar belt 13 and the pressurized caterpillar opposed to each other are adjusted. The distance between the opposing surfaces of the belt 14 is adjusted according to the size of the stone to be crushed and the size of the stone to be crushed. For example, when the crushed stone is to be crushed into sand, as shown in FIGS. 1 and 2, the lowermost end of the gap between the opposing surfaces (linear portions) of the pressure-receiving caterpillar belt 13 and the pressurized caterpillar belt 14 is used. Is set to 0, and when the crushing process is to be performed on gravel, the interval between the lowermost ends is set to about 10 mm. It is adjusted to a possible interval to be fed between the facing surfaces of the pressure caterpillar belt 14. As shown in an embodiment described later, a bearing 7 that supports the rotating shafts 6 of the plurality of pressurizing rings 5 is supported by the machine frame 3 via an anti-vibration rubber 8, and an upper surface of the anti-vibration rubber 8. When the lower surface and the lower surface are fixed to the bearing 7 and the machine frame 3, respectively, the fixed state between the lower surface of the vibration isolating rubber 8 and the machine frame 3 is released before the stopper 27 is moved left and right. , The position of the stopper 27 is moved to the left and right and adjusted.
Is fixed to the machine frame 3 again.

Next, the pressing force of a spring 22 that presses the bearings 7 of the rotating shafts 6 of the plurality of pressurizing rings 5 is adjusted according to the hardness and size of the crushed stone. Next, the drive motor 17
To rotate the predetermined rotating shafts 2 and 6 (the two rotating shafts at the bottom right and left in the drawing), so that the pressure-receiving caterpillar belt 13 and the pressurized caterpillar belt 1 are rotated.
4 so that their opposing surfaces move downward together. In this state, the pressure receiving caterpillar belt 13
When a crushed stone is thrown from above between the opposed surfaces of the pressure caterpillar belt 14 and the pressure caterpillar belt 14, the two caterpillar belts 13, 1
Due to the feeding function of 4 and the gravity, the crushed stones are transported downward while being sandwiched between the opposing surfaces of the two caterpillar belts 13 and 14, and the crushed stone 1 and the pressure ring 5, which face each other, are formed. When passing through the gap between the crushed stones, a clamping force corresponding to the pressing force of each spring 22 acts on the crushed stone, and the gap between the opposing surfaces of the two caterpillar belts 13 and 14 becomes narrower as it extends downward. Therefore, the stone to be crushed is finely crushed stepwise as it is transported downward, and is sent downward from between the opposing surfaces of the two caterpillar belts 13 and 14.

A bearing 7 for supporting the rotating shafts 6 of the plurality of pressurizing rings 5 is supported on the machine frame 3 via a vibration isolating rubber 8, and the upper and lower surfaces of the rubber isolating rubber 8 are provided by the bearing 7 and the bearing 7. When the stones to be crushed are transported downward while being sandwiched between the opposing surfaces of the two caterpillar belts 13 and 14 as described above, a plurality of stones are simultaneously attached to the machine frame 3. Even if the bearing 7 of the rotating shaft 6 of the pressurizing ring 5 mainly vibrates left and right, only the vibration isolating rubber 8 is deformed, and there is no sliding portion between the bearing 7 and the machine frame 3. In addition, there is no danger of wear due to sliding on the member surface, and the durability of the device can be improved.

Although not shown in the drawings, the stone sent downward from between the opposing surfaces of the caterpillar belts 13 and 14 is sent back upward between the opposing surfaces of the caterpillar belts 13 and 14 and again. Both caterpillar belts 13, 14
A circulation conveyor for charging between the opposing surfaces of
By continuously repeating the crushing treatment, it is possible to produce gravel and sand having a desired particle size.

[0009]

An embodiment of the present invention will be described with reference to the drawings.
In the figure, reference numeral 1 denotes three pressure receiving wheels, and the rotating shafts 2 of the respective pressure receiving wheels 1 are supported by front and rear bearings 4 fixed to a machine frame 3 at predetermined intervals in the vertical direction. Reference numeral 5 denotes three pressurized wheels opposed to the side (left side) of the three pressure-receiving wheels 1, respectively, and the rotating shafts 6 of each pressurized wheel 5 are supported by front and rear bearings 7, respectively. The front and rear bearings 7 are supported by the machine frame 3 via the vibration isolating rubber 8, and the upper and lower surfaces of the vibration isolating rubber 8 are fixed to the bearing 7 and the machine frame 3, respectively. The lower surface of the vibration isolating rubber 8 is fixed to the machine frame 3 by screwing so that the fixing position of the vibration isolating rubber 8 can be adjusted in the left-right direction. It is preferable that a guide 9 for preventing the bearing 7 from vibrating only in the left-right direction and not in the vertical direction during operation of the present apparatus is provided on the bearing 7 or the machine frame 3.

The pressure receiving ring 1 and the pressure ring 5 have the same configuration as each other, and the pressure receiving ring 1 and the pressure ring 5 at the top and the center in the vertical direction are, as shown in FIG. , A pressure receiving ring 1 and a pressure ring 5 at the bottom are composed of a large diameter roller 10 and a small diameter roller 11 sandwiched therebetween.
It comprises a pair of front and rear large-diameter rollers 10 and a sprocket 12 sandwiched between them. The above three pressure receiving rings 1 and 3
A pressure receiving caterpillar belt 13 and a pressure caterpillar belt 14 are stretched over the two pressurizing rings 5 respectively. The pressure receiving caterpillar belt 13 and the pressure caterpillar belt 1
Reference numeral 4 denotes an endless band formed by connecting links 16 fixed to the center of the back surface of a large number of rectangular steel plates 15 with pins to each other, and the front and rear sides of the back surface of the rectangular steel plate 15 are a pair of front and rear. It is sent on the large-diameter roller 10 and the link 16
Of the sprocket 12 is meshed with the lower half circumference of the sprocket 12. 1
Reference numeral 7 denotes a pair of left and right drive motors fixed to the upper surface of a table 18 provided on the front side of the machine frame 3. The lowermost rotating shafts 6 and 2 of the pressing wheel 5 and the pressure receiving wheel 1 are respectively connected to a sprocket 19 and a chain. The drive motor 17 is linked to the drive motor 17 through a sprocket 20 and a sprocket 21, respectively.

Reference numeral 22 denotes a rotating shaft 6 of the three pressing rings 5
Is a spring that presses the bearing 7 of FIG. The spring 22 is made up of a number of annular and trapezoidal spring elements alternately superimposed on the front and the front or the back and the back, and is fitted on a guide shaft 23 projecting leftward from the bearing 7. At the same time, the left side is inserted into a spring case 24 fixed to the machine frame 3, and a leftward pressure is received by a spring receiver 26 which advances and retreats left and right by a jack 25 provided at the left end of the spring case 24. The pressing force on the bearing 7 can be adjusted by stopping the spring 25 and moving the spring receiver 26 back and forth with the jack 25 in the left-right direction.

Reference numeral 27 denotes a screw shaft stopper for receiving the pressing force of the spring 22 acting on the bearing 7, which is screwed into a female screw base 28 fixed to the machine frame 3 and the tip end of which is mounted on the bearing 7.
Abuts on the right side, and can be adjusted forward and backward by rotating. The positions of the bearings 4 and 7 are set such that the distance between the opposing surfaces of the two caterpillar belts 13 and 14 increases with the basic positioning and the rotation operation of the screw-shaped stopper 27 as the distance increases. is there. 2
Reference numeral 9 denotes a gutter to be crushed provided at the upper end of the machine casing 3 and a guide plate 30 for crushed stone.

[0013]

According to the apparatus of the present invention, the crushed stone is crushed by being sandwiched between the opposing surfaces of the pressure-receiving caterpillar belt and the pressurized caterpillar belt, so that the pressure-receiving ring and the pressure ring are separated. There is little risk of damage. In addition, there is a possibility that particularly the surfaces of the pressure-receiving caterpillar belt and the pressure caterpillar belt may be damaged.However, since the surface elements of these caterpillar belts are formed of rectangular steel plates, for example, partial repair / reinforcement of a worn portion may be performed. Since this is easily and reliably performed by welding of a cemented carbide reinforcing member, the durability and repairability of the device can be greatly improved as compared with a conventional crushing device using rollers.

Further, since the distance between the opposing surfaces of the pressure-receiving caterpillar belt and the pressurized caterpillar belt is narrowed downward, the crushed stone is finely crushed stepwise as it is transported downward. It is possible to crush stones as large as cobble stones sequentially into gravel and sand. Furthermore, for the same reason, unlike conventional jaw crushers, there is no fear of causing noise pollution.

In the case where a bearing for supporting the rotating shafts of a plurality of pressurizing rings is supported on the machine frame via rubber cushions, and the upper and lower surfaces of the rubber cushions are fixed to the bearing and the machine frame, respectively. When the stone to be crushed is transported downward while being sandwiched between the opposing surfaces of both caterpillar belts, the bearings of the rotating shafts of the plurality of pressurized rings vibrate mainly left and right. However, only the vibration isolating rubber is deformed, and there is no sliding portion between the bearing and the machine frame.Therefore, there is no risk of abrasion due to sliding on the member surface. The effect that can be improved is exhibited.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an apparatus according to the present invention.

FIG. 2 is an enlarged front view of a main part of the above.

FIG. 3 is a sectional view taken along line AA shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pressure receiving ring 2 Rotating shaft 3 Machine frame 4 Bearing 5 Pressing ring 6 Rotating shaft 7 Bearing 8 Anti-vibration rubber 13 Pressure receiving caterpillar belt 14 Pressure caterpillar belt 17 Drive motor 22 Spring 27 Stopper

Continuation of the front page (56) References JP-A-60-143840 (JP, A)

Claims (2)

(57) [Claims] 1. A plurality of pressure receiving rings are vertically spaced from each other by a predetermined distance, and a rotating shaft of each pressure receiving ring is supported by a bearing fixed to a machine frame. The rotating shafts of the plurality of pressure rings opposed to each other are supported by bearings supported by the machine frame, and a pressure-receiving caterpillar belt and a pressure caterpillar belt are stretched over the pressure-receiving rings and the pressure rings, respectively. A predetermined rotating shaft is linked to a drive motor, and a bearing for supporting the rotating shafts of the plurality of pressurizing rings is pressurized by a spring in a direction toward the pressure receiving wheel so as to be adjustable in pressure. A stone characterized in that a stopper for receiving is provided on the machine frame so as to be adjustable to the left and right, and the position of each bearing is set so that the distance between the opposing surfaces of the pressure receiving caterpillar belt and the pressure caterpillar belt becomes wider as it goes upward. Crushing equipment. 2. A bearing for supporting a rotating shaft of a plurality of pressurizing rings is supported on a machine frame via vibration-proof rubber, and upper and lower surfaces of the vibration-proof rubber are fixed to the bearing and the machine frame, respectively. The stone crushing device according to claim 1, comprising: