JP2005118741A - Crusher and aggregate manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crusher and an aggregate manufacturing device capable of stabilizing granularity after crushing and capable of at high rate obtaining crushed stones that can be used as aggregate such as concretes. <P>SOLUTION: The crusher is provided with a crushed object injection port 3, crushing rollers 11 and 12 that each have a predetermined space at lower sections while mutually rotating reversely and a casing 21 at a further lower sections, an impact member 22 rotatably disposed at an almost central section of the casing and a reaction member 23, whose predetermined distance is being kept from the impact member and which is disposed at the periphery of the impact member is provided. The aggregate manufacturing device is provided with a tubby transfer section 91 that is disposed horizontally at a lower section of the crusher, a rotary shaft 92 that has an axial line longitudinally inside the transfer section, and a pressing member 94 and an obstruction member 95 that are provided in upright position on the rotational axis at an arbitrary distance and rotate inside the transfer section. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a crushing apparatus for crushing an object to be crushed such as crushed stone, and an aggregate production apparatus for producing an aggregate such as concrete.

  The crushing device includes a hitting type or a rotating type, and the above crushing device is used as it is as a device for producing aggregates used for concrete, asphalt, etc. The aggregate was manufactured by crushing.

Therefore, a conventional crushing device will be described. First, in the hitting crushing device, a striking plate is attached to a rotor that can rotate forward and reverse, and this rotor is installed in a frame (Patent Document). 1). On the other hand, in the rotary crushing device, a crushing chamber is formed by a truncated cone shaped mantle through a mantle door on a main shaft inserted through an eccentric shaft hole and a cone cave provided around the mantle. The mantle is eccentrically rotated by the rotation of the eccentric shaft, and the object to be crushed falls while being compressed and crushed by the change in the gap between the inner peripheral surface of the cone cave and the outer peripheral surface of the mantle. (See Patent Document 2).
Japanese Examined Patent Publication No. 61-56025 (page 1, left column, line 29-right column, line 8; FIGS. 1 and 2) Japanese Patent Publication No. 3-50580 (page 1, left column, line 12-page 2, left column, line 10; Fig. 3)

  However, the hitting crushing device of the above prior art basically hits the object to be crushed with a striking plate, and collides the object to be crushed with a repulsion plate provided inside the frame, thereby Since it is the structure to crush, the particle size after crushing was not stabilized. That is, the concrete or asphalt aggregate used for the road is classified into No. 1 to No. 7 according to the particle size, and the particle size of No. 7 with the finest particle size is 2.5 mm to 5 mm. Therefore, those that have been crushed to a particle size of less than 2.5 mm cannot be used as aggregates, and the ratio of single-grain crushed stones within the particle size range of each item is required to be within a predetermined range. As a result, crushed stones with large particle sizes are unsuitable for use as aggregates.

  On the other hand, the conventional rotary crushing device compresses and crushes the object to be crushed by changing the gap between the inner peripheral surface of the cone cave and the outer peripheral surface of the mantle. However, since the gap changes, the object to be crushed that falls with the gap widened will be discharged with a large particle size, and a sufficiently crushed crushed stone will be obtained. I could not.

  In any of the above crushing devices, even if the particle size of the material to be crushed is limited to a predetermined range, the state to be crushed is not predictable, the particle size after crushing is not stable, Moreover, depending on the state of crushing, a large amount of material that has been crushed to the extent that it cannot be used as aggregate such as concrete or asphalt may be included. In addition, the crushed crushed stone often has sharp crushing portions, and when using this type of crushed stone that remains as a road aggregate, the acute angle portion of the aggregate protrudes from the surface of asphalt or the like. In some cases, this type of sharp-angled portion must be removed to make it unsuitable for road aggregates.

  The present invention has been made in view of the above-mentioned points. The object of the present invention is to stabilize the particle size after crushing and to obtain a high proportion of crushed stone that can be used as an aggregate such as concrete. It is providing the apparatus and the aggregate manufacturing apparatus which uses this.

  Therefore, the present invention according to the crushing apparatus includes a crushing object inlet, a crushing roller that rotates in opposite directions with a predetermined gap below the crushing object inlet, and a lower part of the crushing roller. A casing provided, a collision member arranged rotatably in the center of the casing, and a repulsion member arranged around the projecting member while maintaining a predetermined distance from the collision member. The summary is the crushing device.

  In the above, the collision member includes a base that rotates in the casing and a plurality of rod-like members that are supported in parallel to the central axis that the base rotates, and each rod-like member has a predetermined gap. can do. Further, the collision member includes a rotating shaft that penetrates the casing in the horizontal direction, and two circular plate-shaped bases that are supported in the center while being contiguous to both ends of the rotating shaft existing in the casing. And a plurality of rod-like members that are provided between the two base portions while being maintained parallel to the axis of the rotation shaft, and each rod-like member has a predetermined gap.

  Further, the repulsion member can be composed of a plurality of rod-shaped members that surround the periphery of the collision member with an appropriate gap. Further, the repelling member includes a plurality of fixed members that surround the collision member while having an appropriate gap, and that are fixed while maintaining the axis parallel to the rotation axis of the repulsion member. It can be comprised by a rod-shaped member.

  Furthermore, this invention concerning a crushing apparatus is a crushing apparatus which consists of a compression part and an impact part, Comprising: A compression part has a predetermined | prescribed clearance gap under the to-be-crushed material inlet, and crushes which rotate in the mutually opposite direction A compression part composed of a roller, and the impact part has a rotating shaft that penetrates the casing of the impact part in the horizontal direction and a center that is continuous in the vicinity of both ends of the rotating shaft that exists in the casing. Two circular plate-shaped base portions that are supported, a plurality of first rod-like members that are horizontally disposed between the two base portions while being maintained parallel to the axis of the rotation shaft, and an appropriate gap The impact portion is formed by a plurality of second rod-shaped members fixedly provided so as to surround the periphery of the first rod-shaped member and maintain the axis parallel to the rotation axis. The gist is also a crushing device characterized byIn this case, the first rod-shaped member and the second rod-shaped member can be arranged at an equal distance from the rotation shaft.

  In any of the above-described inventions, the crushing roller is installed while maintaining both rotation shafts horizontal, a tension roller having a rotation shaft is provided above or below the crushing roller, and the height of the rotation shaft of the crushing roller is provided. A drive shaft by a single drive device is installed on the opposite side of the tension roller with reference to the above, and a sprocket is connected to each shaft, and the sprocket of the drive shaft and the crushing roller and the tension roller on the side away from the drive shaft The chain can be suspended between the two sprockets, and the outside of the chain can be suspended over the sprockets of the remaining crushing rollers.

  On the other hand, this invention concerning an aggregate manufacturing apparatus is an aggregate manufacturing apparatus which uses any one of the said crushing apparatuses, Comprising: The bowl-shaped conveyance part arrange | positioned horizontally below the said crushing apparatus, and this conveyance part An aggregate manufacturing apparatus comprising: a rotary shaft having an axial line in the inner longitudinal direction thereof; and a pressing member and an obstacle member that are erected on the rotary shaft at appropriate intervals and rotate within the transport unit.

  In the above, the pressing member is a plate-like pressing member having an oblique plane with respect to the transverse direction of the rotation shaft, and the obstacle member is a rod-like obstacle member protruding along the transverse direction of the rotation shaft. can do. And these press members and obstruction members can be made into the structure formed by arrange | positioning alternately in the axial direction of the said rotating shaft.

  According to the crushing apparatus of the present invention, the first crushing is performed by the crushing roller, the crushing object collides with the collision member or the repulsion member, the second crushing is performed, and the crushing object collided with the collision member. However, since the third crushing is performed when it collides again with the repelling member located in the vicinity thereof, the material to be crushed is sufficiently crushed, and at least the crushing part is caused by the collision with the colliding member and the repelling member. It becomes possible to remove the acute angle portion of the surface.

  Further, since the crushing with the crushing roller is such that the crushing roller has a gap, the crushing object having a small particle size can pass without crushing, and more than the crevice. Although it crushes only by compressing only the to-be-crushed object of a big particle size, the crushing state is rough crushing of the grade which can pass the said gap | interval. Therefore, the object to be crushed when colliding with the collision member or the repulsion member can have a substantially uniform particle size.

  Moreover, since the crushing roller can crush the object to be crushed and simultaneously adjust the supply amount to the collision member and the repulsion member, the object to be crushed after the crushing roller ensures the number of collisions with the collision member and the repulsion member. The particle diameter after crushing can be made stable, and at the same time, the acute angle part on the surface of the crushing part can be removed.

  In addition, according to the configuration in which the crushing roller is rotated by a single drive device, both rollers can be rotated in the opposite direction at the same rotational speed, so that the supply of the object to be crushed is stable, and the crushing roller is crushed. Since the drive device only needs to be provided on one side of the roller, the entire crushing device can be reduced in size and weight.

  On the other hand, according to the aggregate manufacturing apparatus of the present invention, the crushed material crushed by the crushing device is conveyed in a predetermined direction while being pressed in the conveying unit by the pressing member, and the crushed material being conveyed by the obstacle member is removed. The crushing surface end of each crushed material can be worn by stirring or colliding with the crushed material. Moreover, since the crushed material in the transport unit is compressed by the pressing member and the obstacle member, the crushed materials can be rubbed against each other, and the edge portion of the crushed surface, in particular, the acute angle portion can be removed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, this embodiment is roughly composed of a compression unit 1 and an impact unit 2, and the compression unit 1 is provided continuously above the impact unit 2, and is compressed. The to-be-crushed object A which passed the part 1 is processed by the lower impact part.

  The compressing unit 1 includes a crushing object inlet 3 provided above and two crushing rollers 11 and 12 provided below, and the crushing rollers 11 and 12 are opposite to each other. It is provided to be rotatable in the direction. Then, at a position where the surfaces of the rollers 11 and 12 are closest, a predetermined gap α is formed between the rollers 11 and 12, and the rollers 11 and 12 are rotated so that the opposing surfaces of the rollers 11 and 12 are both facing downward. The direction is adjusted. Accordingly, the object A to be crushed charged into the object to be crushed inlet 2 is sent toward the gap α by the rotation of the rollers 11 and 12, and is compressed and crushed to the extent that it can pass through the gap α. is there.

  The impact unit 2 includes a box-shaped casing 21, a collision member 22 that is rotatably provided inside the casing 21, and a repulsion member 23 that is arranged so as to surround the periphery of the collision member 22. The member 22 is composed of an assembly of first rod-shaped members 73, and the repulsion member 23 is composed of an assembly of second rod-shaped members 81. The collision member 22 is provided on a circular plate-like base 71 connected to the rotation shaft 63 and is rotatable as a whole. One repulsion member 23 is fixedly provided on the casing 21. Yes. Moreover, the said 1st rod-shaped member 73 and the 2nd rod-shaped member 81 are each arrange | positioned at equal distance from the said rotating shaft.

  Therefore, the majority of the objects A to be crushed that have passed through the compression section 1 pass through the gap between the repulsion members 23 after colliding with the repulsion members 23 or without colliding with the collision members 22. Become. Then, by continuously rotating the collision member 22, the object A to be crushed collides with the collision member 22 to promote crushing. At the same time, the object A to be crushed which collides with the collision member 22 is scattered again toward the periphery by the impact of the collision member 22 and collides with the repulsion member 23 disposed in the vicinity thereof. It will collide with the inside of the casing 21 which exists in the periphery. As described above, after the object A to be crushed collides with the inside of the casing 21, the collision member 22 or the repulsion member 23 inside the impact portion 2, it falls to the lower surface of the casing 21, completes crushing, and exits from the outlet 24. It is discharged.

  Here, the details of the compression unit 1 will be described. As shown in FIG. 2, sprockets 41 and 42 are provided on the shaft cores of the crushing rollers 11 and 12, and these are connected via the chains 43 and 44. Are linked to the drive side sprockets 45 and 46. Both the drive-side sprockets 45, 46 are connected to motors 47, 48, and both the motors 47, 48 are rotated in opposite directions. That is, the crushing rollers 11 and 12 are rotated so that the position where the surfaces of the crushing rollers 11 and 12 are closest is moved downward.

  In this case, the sprockets 41 and 42 provided on the crushing rollers 11 and 12 have the same diameter, the drive-side sprockets 45 and 46 have the same diameter, and the motors 47 and 48 having the same output are used. The crushing rollers 11 and 12 can be rotated by the rotation speed. If the diameters of the crushing rollers 11 and 12 are the same, the peripheral speeds of the crushing rollers 11 and 12 can be made uniform. In this way, the crushing rollers 11 and 12 rotated at the same peripheral speed rotate in opposite directions, whereby the objects to be crushed can be collected toward the intermediate portion B of both the rollers 11 and 12. When the gap α formed in the intermediate portion B is forcibly passed, the object to be crushed is crushed.

  Further, the crushing rollers 11 and 12 can have a constant gap α in the intermediate portion B between the rollers 11 and 12 by smoothing the surfaces thereof. In the portion B, the gap α is the narrowest and the upper portion constitutes a wider interval. Therefore, when the object to be crushed is large, the portion B is crushed in advance on the upper part of the roller before reaching the gap α. It can be crushed again in the vicinity of the gap α.

  Next, the impact part 2 will be described in detail. As shown in FIG. 3, the box-shaped casing 21 has a space part having a substantially rectangular cross section. A rotating shaft 63 that penetrates the wall surfaces 61 and 62 is provided. Outside the casing 21, a pulley 64 is continuously provided at one end of the rotating shaft 63, and a rotational force is applied by a drive motor (not shown). In addition, circular plate-like rotation bases 71 and 72 are connected to both ends of the rotation shaft 63 inside the casing 21 so that the rotational force of the rotation shaft 63 is transmitted to the rotation bases 71 and 72. It has become. Therefore, a plurality of first rod-like members 73 having an axis parallel to the rotation shaft 63 are provided between the rotation bases 71 and 72. Each of the first rod-shaped members 73 is equidistant from the rotation shaft 63, and when the rotation bases 71 and 72 are rotated by the rotation of the rotation shaft 63, the first rod-shaped members 73 are rotated from the rotation shaft 63. It is configured to turn around. The collision member 22 is formed by the rotation shaft 63, the rotation bases 71 and 72, and the first rod-shaped member 73. As shown in the figure, a slight gap is formed between the rotation bases 71 and 72 and the casing wall surfaces 61 and 62. This is because when the rotation bases 71 and 72 rotate, The gap is provided so as not to allow the object to be crushed to enter.

  In addition, a plurality of second rod-shaped members 81 are provided in a state having a predetermined distance from the rotation base portions 71 and 72 and the first rod-shaped member 73. The second rod-like member 71 is suspended between the inner surfaces of a pair of wall surfaces 61 and 62 through which the rotary shaft 63 is penetrated, and the axis thereof is provided in parallel with the rotary shaft 63. . As shown in FIG. 4, the second rod-shaped member 81 is attached by connecting both sides of each second rod-shaped member 81 to casing wall surfaces 61 and 62. In this case, the casing wall surfaces 61 and 62 are each composed of two plate members 61a, 61b, 62a, and 62b, and through-holes through which the second rod-shaped member 81 can be inserted are formed in the plate members 61a and 62a located inside. It is configured to be fixed by bolts 65 and 66 while laminating plate members 61b and 62b disposed outside. Further, female screws 82 and 83 are threaded on both end faces of the second rod-shaped member 81, and these can be directly fastened by bolts 67 and 68 from the outside of the outer plate members 61b and 62b. It is like that. Therefore, by removing the lamination bolts 65 and 66, the outer plate members 61b and 62b can be detached from the inner plate members 61a and 62a, and further, a bolt 67 for fastening one end of the second rod-shaped member 81. Since the second rod-shaped member 81 is only fastened to the outer plate material 62b by separating the second plate-shaped member 81, the second rod-shaped member 81 is removed from the casing by moving the plate material 62b in the horizontal direction. It can be done.

  Here, the positional relationship between the above-described rotating shaft 63, the rotating bases 71 and 72, the first rod-like member 73, and the second rod-like member 81 is as shown in FIG. That is, the rotation shaft 63 is located at the center of the rotation base 71, and the first rod-shaped members 73 are provided at equal intervals from the rotation shaft 63 and are arranged in a line of arcs along the circumference of the rotation base 71. ing. Further, the second rod-shaped member 81 is provided at equal intervals from the rotating shaft 63, and the periphery of the first rod-shaped member 73 is disposed in an arc shape, and is disposed so as to surround the first rod-shaped member 73 as a whole. Has been.

  Therefore, each of the first rod-like members 73 is arranged with an appropriate interval. However, since the rotating base 71 and the first rod-like member 72 rotate continuously as described above, the object to be crushed is It does not enter the inside of the first rod-like member 72 through this gap, or even if it enters, it is only a part, and most of them collide with the first rod-like member 72 and move outward. It will be scattered.

  On the other hand, the second rod-shaped member 73 is also disposed with an appropriate interval. However, the second rod-shaped member 73 is fixedly provided without rotating as described above, and the repulsive member 23. Therefore, the object to be crushed can pass through easily. Further, in the present embodiment, the interval β between the second rod-shaped members 81 disposed above the rotation shaft 63 is different from the interval γ between the second rod-shaped members 81 disposed below. This is because the object to be crushed and dropped through the compression unit 1 (FIG. 1) does not stagnate above the repulsion member 23. In other words, the object to be crushed and falling after passing through the compressing unit 1 can appropriately collide with the collision member 22. On the other hand, by narrowing the gap γ of the second rod-shaped member 81 located below the rotating shaft 63, the object to be crushed that collides with the collision member 22 and collides with the second rod-shaped member 81. The probability of doing is high. In particular, in the vicinity of the second rod-shaped member 81 disposed at the same height as the rotating shaft 63 (arranged on the left and right in the drawing), the object to be crushed vertically falls in the collision member 22 (first rod-shaped member 72). ) Is formed in such a range that it cannot collide, and in order to enable crushing even in this range, the vertical interval is narrowed. A gap δ is formed between the second collision member 81 closest to the casing 21 and the casing 21, but even when the object to be crushed passes through the gap δ. , Crushing by colliding between the two. Further, by making the interval γ of the lower second rod-shaped member 81 dense, the object to be crushed falling downward from the repulsive member 23 is reversely stagnated, so that the number of collisions with other objects to be crushed can be reduced. It is also expected to increase, and crushing is promoted by increasing the number of these collisions.

  Next, the operation | movement aspect of this embodiment is demonstrated. Since the present embodiment is configured as described above, as shown in FIG. 1, the object A to be crushed is fed into the apparatus through the inlet 3 provided at the upper portion of the compression unit 1. . This charging can be performed continuously or intermittently by a belt conveyor or the like. And the to-be-crushed part A descend | falling from the injection | throwing-in part 3 is sent to the impact part 2 from between the crushing rollers 11 and 12 of the said compression part 1 while being crushed by the compression part 1 by predetermined particle size. The supply to the impact unit 2 is based on free fall, and is supplied to the impact unit 2 by dropping the object A that has passed through the compression unit 1.

  In the impact part 2, the object A to be crushed collides with the second rod-shaped member 81 constituting the repulsive member 23, or passes through the gap between the second rod-shaped members 81 and reaches the collision member 22. The object A to be crushed that has reached the collision member 22 collides with the first rod-shaped member 73 that constitutes the collision member 22. Here, since the collision member 22 is configured to rotate as described above, the collision member 22 collides with a free fall of the object A to be crushed at a predetermined speed, and the object A is crushed by this collision. Can be promoted. In addition, the object A to be crushed that collides with the rotating collision member 22 is bounced off to the periphery by the reaction of the collision, and further collides with the repulsion member 23 or the casing 21 to promote crushing and to crush the surface. The acute angle portion at the end is removed. In this way, the object A to be crushed which collides with the repulsion member 23 or the casing 21 is sufficiently crushed after the collision, or after colliding with the collision member 22 or the repulsion member 23 again, and the acute angle of the crushing surface. The part is removed and falls below the impact part 2. Thereby, crushing of the material A to be crushed is completed. Therefore, the lower part of the impact part 2 is opened. By providing a conveying device such as a belt conveyor here, the impact unit 2 is conveyed from the crushing device to a predetermined place.

  In addition, since the to-be-crushed object A continuously supplied to the injection | throwing-in part 3 is restrict | limited by the compression part 1, the supply amount to the impact part 2 will be stabilized. Further, since the first rod-shaped members 73 of the collision member 22 are arranged with an appropriate interval, when the object A collides, the object to be crushed passes through the gap and enters the inside of the collision member 22. Although A may enter, in this case, it is discharged outward by the centrifugal force accompanying the rotation of the collision member 22. Furthermore, the collision in the impact part 2 may cause not only the casing 21, the collision member 22 and the repulsion member 23 but also the object A to be crushed to collide with each other. It is effective.

  Next, an embodiment according to the aggregate manufacturing apparatus will be described. In the present embodiment, as shown in FIG. 6, a long bowl-shaped conveyance unit 91 is provided in a horizontally long shape, and conveyance is permitted while accommodating the crushed material A crushed by the above-described crushing apparatus. At the center in the longitudinal direction of the transport unit 91, a rotation shaft 92 is provided horizontally along the longitudinal direction. A sprocket 93 is provided at one end of the rotating shaft 92, and the driving force of a motor (not shown) is transmitted through a chain (not shown). A blade-shaped pressing member 94 is erected on the rotating shaft 92 at an appropriate interval, and a bar-shaped obstacle member 95 is erected between the pressing members 94. Therefore, when the rotating shaft 92 rotates by the driving force of the motor 95, the pressing member 94 and the obstacle member 95 move in the circumferential direction together with the rotating shaft 92.

  Here, the details of the rotating shaft 92, the pressing member 94, and the obstacle member 95 will be described. The pressing member 94 has two plate-like members 94a and 94b directed in opposite directions at a predetermined position. The surfaces of the plate-like members 94a and 94b are inclined with respect to a direction (transverse direction) parallel to the cross section X of the rotating shaft 92. On the other hand, the obstruction member 95 has four rod-like members 95a, 95b, 95c, and 95d protruding radially just in the middle of the position where the pressing member 94 is provided, and the rod-like members 95a to 95d. The axes of each protrude along the transverse direction.

  With the above configuration, by rotating the rotating shaft 92, the plate-like members 94 a and 94 b of the pressing member 94 move in the circumferential direction around the rotating shaft 92 at a predetermined position, and the crushed material supplied to the transport unit 91. It acts so as to convey to the aggregate. That is, the pressing member 94 moves the crushed material along the oblique surface in the conveying direction. However, since the pressing member 94 is not a continuous screw, only a part of the supplied crushed material is conveyed. It pushes in the direction. Therefore, the crushed material supplied sequentially is pressed from the rear to the front, and the entire aggregate of crushed materials is moved in the conveying direction by the pressing force.

  On the other hand, the rod-like members 95a to 95d constituting the obstacle member 95 move in the circumferential direction around the rotation shaft 92 at a predetermined position by the rotation of the rotation shaft 92, but the rod-like members 95a to 95d have a flat surface. Since it is not done, it does not have the effect of moving the crushed material. Therefore, the obstacle member 95 acts to intrude into the aggregate of crushed materials conveyed by the pressing member 94 and pressurize the aggregate. That is, the aggregate of crushed materials is pressed by the pressing member 94 and gradually moves in the transport direction, because the pressing force by the pressing member 94 transmits between the crushed materials. Therefore, when the obstacle member 95 enters the crushed aggregate in a dense state that is transmitted and compressed to each other, the denser state can be achieved. In this way, by bringing the aggregate of crushed materials into an overcrowded state, the crushed materials are compressed or rubbed against each other, and the protrusions (particularly acute angle portions) on each surface are scraped off. Further, since the obstacle member 95 is brought into direct contact with the crushed material due to the intrusion of the obstacle member 95, friction between the two members is caused, and the contact state between the crushed materials is changed. The effect of scraping off the portion (particularly the acute angle portion) will be improved.

  Since the embodiment of the aggregate manufacturing apparatus is configured as described above, the crushed stone crushed by the crushing apparatus can be finished in a state where it can be used as a concrete aggregate. That is, the crushed stone crushed by the crushing device is crushed within a predetermined range, and can be used as concrete crushed stone by scraping the crushing surface generated on the surface of this crushed stone. And the discharge port 96 is provided in the front-end | tip of the conveyance part 91, and aggregate is discharged | emitted from this discharge port 96, but the crushed material which moved the predetermined range of the conveyance part 91 is fully crushing surface. It can be used as an aggregate in this state. In addition, a big impact is not given inside an aggregate manufacturing apparatus, and the particle size of the crushed material crushed by the crushing apparatus does not change a lot.

About the operation | movement aspect of this embodiment, by rotating the rotating shaft 92, the press member 94 moves a crushed material gradually. The crushed material supplied to the transport unit 91 is supplied from the crushing device as shown in FIG. This supply is performed from a supply port 98 formed by opening a part of a lid portion 97 provided on the upper surface of the conveyance unit 91, and crushed material falling from the lower end of the crushing device is conveyed via the supply port 98. It is supplied to the inside of the part 91. Then, by sequentially supplying the crushed material to the inside of the conveying unit 91, the crushed material supplied earlier is moved forward along with the movement of the crushed material supplied later. And the crushed material which reached | attained the front-end | tip of the conveyance part 91 will be discharged | emitted from the discharge port 96 Although both embodiment of this invention is as above-mentioned, various aspects in the range which does not deviate from the meaning of this invention. It is possible to take For example, in the crushing device of the above embodiment, the interval between the rod-shaped members 81 constituting the repulsive member 23 is different between the upper and lower portions of the rotating shaft 63, but this may be equalized. What is necessary is just to change the width of a space | interval suitably according to the hardness etc. of the part to be crushed. Similarly, the interval between the rod-shaped members 73 constituting the collision member 22 can also be varied, and the rotation speed can be appropriately changed.

  Further, when driving the crushing rollers 11 and 12 of the compression unit, different motors are used in the above embodiment. However, as shown in FIG. 8A, both crushing rollers 111 and 112 are driven by a single motor 147. Can be driven. In this case, by using the tension roller 149, the rotation directions of the rollers 111 and 112 can be made opposite to each other. That is, the rotation shafts 150 and 151 of the crushing rollers 111 and 112 are maintained horizontally, the rotation shaft 152 of the tension roller 149 is provided above the crushing rollers 111 and 112, and the motor 147 as a driving device The drive shaft 153 is provided at a position away from the roller 112, and is disposed slightly below the rotation shafts 150 and 151 of the crushing rollers 111 and 112. Therefore, sprockets 154 to 157 for driving force transmission are connected to the respective shafts 150 to 153, and a chain 158 is suspended on the sprockets 154 to 157. The drive shaft 153 and the rotary shaft 152 of the tension roller 149 are suspended. And the sprockets 154, 156, and 157 of the rotating shaft 150 of one of the crushing rollers 111 on the side away from the drive shaft 153 are suspended so as to be engaged inside the chain 158, and the other crushing roller 112 that remains is chained. Suspend to engage outside 158. Accordingly, since the sprockets 154 and 155 of the crushing rollers 111 and 112 are suspended in different states on the inner side and the outer side of the chain 158, both the rollers 111 and 112 can be rotated in opposite directions. is there. When the tension roller 149 as described above is provided below the crushing rollers 111 and 112, the drive shaft 153 should be suspended by being positioned above the rotation shafts 150 and 151 of the crushing rollers 111 and 112. The chain 158 does not come into contact with the sprocket 155 or the like of the crushing roller 112 on the way, and in some cases, the sprocket 157 of the drive shaft 153 can be configured similarly by making it have an extremely large diameter.

  Furthermore, in the aggregate manufacturing apparatus, the plate members 94a and 94b that constitute the pressing member 94 in the above-described embodiment protrude two at an appropriate interval, but this is three or four. For example, as shown in FIG. 8B, the bar members 95a to 95d constituting the obstacle member 95 can be provided so as to protrude in the tangential direction from the surface of the rotating shaft 192, and the bar member 195a. ˜195d may be provided as two each.

  Since the crushing experiment by the above-mentioned embodiment was performed about this invention concerning a crushing apparatus, the implementation result is demonstrated. The material to be crushed is a stone for concrete aggregate. The crushing apparatus described above is started, the gap α between the crushing rollers 11 and 12 is adjusted to 13 millimeters, concrete aggregate 6665 g is introduced from the material input port 3, and the aggregate after crushing is supplied to the JISA 1102 with a predetermined value. An aggregate sieving test was performed. The experimental results are shown in Table 1.

  According to the above experimental results, the aggregate after crushing remained 98% on the sieve having a sieve size in the range of 16.0 mm to 1.18 mm. Further, the remaining 2% passed 1.18 mm. Therefore, among the aggregates crushed by the above experiment, 2% passing through 1.18 mm cannot be used as road crushed stones. It can be used as a number. In particular, there is 60% of aggregate remaining in the 9.5 mm sieve, which is a crushed stone having a central particle size of the crushed stone for road No. 6 and suitable for producing the crushed stone for road No. 6 concerned. found. In addition, when manufacturing this kind of No. 6 crushed stone, it was often crushed more than necessary and pulverized and was generally in an unstable crushed state, but in this example, Stable crushing results could be obtained.

  Furthermore, aggregates of crushed stone No. 4 or No. 5 for roads can be used as the material to be crushed. That is, as a lithotripter, crushed stones of various particle sizes are not always produced and stored, and crushed stones of desired particle sizes are produced according to orders, but the crushing equipment is adjusted for each particle size. Basically, it was difficult to further crush the crushed stone produced in road crushed stone No. 4 or No. 5. However, according to the present embodiment, a crushed stone of a desired particle size can be obtained by crushing to half the particle size with a crushing roller. According to the order, these crushed stones are crushed according to the present embodiment, and crushed stones suitable for No. 6 or No. 7 can be produced.

It is explanatory drawing which shows embodiment of this invention. It is explanatory drawing which shows a compression part. It is III-III sectional drawing which shows an impact part. It is explanatory drawing which shows the relationship between a casing and a 2nd rod-shaped member. It is VV sectional drawing. It is explanatory drawing of embodiment concerning an aggregate manufacturing apparatus. It is explanatory drawing which shows the rotating shaft of embodiment concerning an aggregate production apparatus. (A) is explanatory drawing which shows other embodiment of the crushing apparatus, (b) is explanatory drawing which shows other embodiment of an aggregate manufacturing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compression part 2 Impact part 3 Crushing object inlet 11, 12 Crushing roller 21 Casing 22 Collision member 23 Repulsion member 41, 42, 45, 46 Sprocket 43, 44 Chain 47, 48 Motor 61, 62 Casing wall surface 63 Rotating shaft 71 , 72 Rotating base 73 First rod member 81 Second rod member 91 Conveying portion 92 Rotating shaft 94 Pressing member 95 Obstacle member A Object to be crushed

Claims (11)

A crushing object input port, a crushing roller that rotates in opposite directions with a predetermined gap below the crushing material input port, a casing provided under the crushing roller, A crushing apparatus comprising: a collision member arranged rotatably in the center; and a repulsion member arranged around the projecting member while maintaining a predetermined distance from the collision member. The collision member includes a base portion that rotates in the casing and a plurality of rod-like members that are supported in parallel with a central axis that the base portion rotates, and each of the rod-like members has a predetermined gap. The crushing apparatus according to claim 1. The collision member includes a rotating shaft that penetrates the casing in the horizontal direction, and two circular plate-like base portions that are supported in the center while being contiguous to both ends of the rotating shaft existing in the casing. 2. A collision member comprising a plurality of rod-like members that are arranged in parallel between the two base portions while being maintained parallel to the axis of the rotating shaft, and each rod-like member has a predetermined gap. Crushing equipment. The crushing device according to any one of claims 1 to 3, wherein the repulsion member is a repulsion member including a plurality of rod-shaped members that surround the periphery of the collision member with an appropriate gap. The repulsion member includes a plurality of rod-like members that are fixedly provided so as to surround the collision member while having an appropriate gap, and to maintain the axis parallel to the rotation axis of the repulsion member. The crushing device according to any one of claims 1 to 3, wherein the crushing device is a repelling member. A crushing device having a compression part and an impact part arranged vertically, the compression part having a predetermined gap below the material input port and a direction opposite to each other with a predetermined gap below the material input port A crushing roller that rotates to the compression unit, and the impact unit includes a casing that is open at the top and bottom, a rotating shaft that passes through the casing in a horizontal direction, and the casing that is present in the casing. A plurality of circular plate-like bases that are supported in the vicinity of both ends of the rotating shaft and supported at the center, and a plurality of bases that are horizontally disposed between the two bases while being maintained parallel to the axis of the rotating shaft. A plurality of second rod-shaped members fixedly provided while surrounding the first rod-shaped member with an appropriate gap while maintaining the axis parallel to the rotation axis. A crushing device characterized in that the crushing device is provided with an impact portion. The crushing apparatus according to claim 6, wherein the plurality of second rod-shaped members are a plurality of second rod-shaped members arranged roughly above and below the rotation shaft and densely below. Both the rotation shafts of the crushing roller are installed while being kept horizontal, a tension roller having a rotation shaft is provided above or below the crushing roller, and the tension roller is based on the height of the rotation shaft of the crushing roller A drive shaft by a single drive device is installed on the opposite side of each, and a sprocket is connected to each shaft, and between the sprocket of the drive shaft and both the crushing roller and the tension roller sprocket on the side away from the drive shaft. The crushing device according to any one of claims 1 to 7, wherein the chain is suspended and the outside of the chain is suspended over the sprockets of the remaining crushing rollers. It is an aggregate manufacturing apparatus which uses the crushing device in any one of Claims 1 thru | or 8, Comprising: The bowl-shaped conveyance part arrange | positioned horizontally below the said crushing apparatus, The internal longitudinal direction of this conveyance part An aggregate manufacturing apparatus comprising: a rotary shaft having an axis line; and a pressing member and an obstacle member that are erected on the rotary shaft at appropriate intervals and rotate within the transport unit. The pressing member is a plate-like pressing member having a plane that is oblique with respect to the transverse direction of the rotating shaft, and the obstructing member is a rod-like obstructing member protruding along the transverse direction of the rotating shaft. The aggregate manufacturing apparatus according to claim 9. The aggregate manufacturing apparatus according to claim 9 or 10, wherein the pressing member and the obstacle member are a pressing member and an obstacle member that are alternately arranged in the axial direction of the rotation shaft.

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