JP6225344B2 - Structure for carrying objects to be crushed into crushing equipment - Google Patents

Description

  The present invention allows the conveyance density from the vibration feeder to be as wide as possible in all widths by suspending the crushed material to be fed into the crushing apparatus in the vicinity of the conveyance end of the vibration feeder by sieving chains of different weights in parallel from above. The present invention relates to a structure for carrying an object to be crushed into a crushing apparatus configured to equalize the material.

  Conventionally, an object to be crushed such as concrete to be processed by a crushing apparatus is put into a conveyance unit such as a vibration feeder, and transferred to a crushing chamber from a conveyance end of the conveyance apparatus and crushed into a predetermined size. In addition, as one of the crushing devices, the object to be crushed is put into a V-shaped crushing chamber between the receiving tooth and the externally moving tooth that are arranged to face each other, and the object to be crushed by the swinging motion of the externally moving tooth with respect to the receiving tooth There is a jaw crusher configured to crush.

  In addition to concrete, very hard materials such as stone and metal are put together in the jaw crusher, so that the receiving teeth and externally moving teeth that are directly impacted by the object to be crushed are consumed by wear. In addition, since the consumption of the teeth and the like cannot be crushed to a predetermined size, these are replaced parts.

  In the jaw crusher, if the object to be crushed carried from the end of the vibration feeder is delivered evenly to the entire width of the receiving teeth and externally moving teeth, the impact received by the receiving teeth during crushing is all. Since it becomes equal to the width, the period of wear due to wear also becomes longer. However, depending on the installation conditions such as the wrinkle of the vibration feeder and the inclination of the vibration feeder, the object to be crushed from the end of the vibration feeder may be biased, causing local damage to the receiving teeth. . Under such circumstances, it was necessary to advance the timing of parts replacement despite the fact that wear did not progress for the full width of the teeth.

  For example, Patent Document 1 discloses a technique that can be applied to a crushing apparatus in order to improve such a situation. The technique described in Patent Document 1 adds a weight to the lower part of the chain curtain in order to carry out a certain amount of waste as a waste sorting system to a downstream process, thereby improving the accuracy of quantitative conveyance.

JP 2011-50959 A

  Certainly, the technique described in Patent Document 1 is effective in securing a certain effect when a predetermined amount of the object to be crushed is continuously carried out to the downstream process and is uniformly introduced into the crushing apparatus. Technology.

  However, the technique described in Patent Document 1 can keep a predetermined weight of waste for a certain period by adding a weight to the lower part of the chain curtain. Even if the waste that has been transported in (1) flows to the left and right of the chain curtain and starts to stay, the waste in the center part will Since the chain curtain is pushed up first by the force of the transport feeder, the waste that is biased toward the central portion continues to be carried out in a state of being biased toward the central portion. Even if such a chain curtain is installed on the jaw crusher, local wear such as tooth receiving cannot be improved.

  The present invention has been made in view of the circumstances as described above, and the objects to be crushed to be crushed into the crushing apparatus are suspended in a plurality of rows in parallel from above in the vicinity of the conveying terminal of the vibration feeder. The object of the present invention is to provide a structure for carrying an object to be crushed into a crushing apparatus configured to equalize the conveyance density from the vibration feeder as much as possible across the entire width.

  In order to achieve the above object, the present invention provides the following crushed object carrying structure.

  In the invention according to claim 1, a vibration feeder in which a sieve chain is suspended in parallel in a plurality of rows from above in the vicinity of the conveyance end, and an object to be crushed conveyed from the vibration feeder are crushed between the receiving teeth and the externally driven teeth. A plurality of sieving chains arranged in parallel with each other and arranged in parallel with each other are arranged with a variable weight according to a difference in conveyance density due to bias of the object to be crushed, and a conveyance density from the vibration feeder A structure for carrying an object to be crushed into a crushing device, characterized in that it is configured to equalize as much as possible in all widths.

  In the invention according to claim 2, the head of the sieve chain is freely engageable with the case of the vibration feeder, and the sieve chain has a different selection position and weight depending on the situation of the group of objects to be crushed. 2. The structure for carrying an object to be crushed into the crushing apparatus according to claim 1, wherein the structure is configured so that it can be freely replaced.

  According to the object to be crushed into the crushing apparatus according to the present invention, even when the object to be crushed is conveyed in a biased state, the conveyance density from the conveyance unit can be equalized as much as possible in the entire width. The object to be crushed in the crushing part can be treated evenly in the entire width of the crushing chamber, and the period during which the crushing part is consumed can be maximized.

It is a schematic sectional drawing of the crushing apparatus provided with the to-be-crushed object carrying-in structure which concerns on one Embodiment of this invention. It is a schematic sectional drawing of the usage condition example of the crushing apparatus provided with the to-be-crushed material carrying-in structure which concerns on one Embodiment of this invention. It is an upper perspective view which shows a part of crushing apparatus provided with the to-be-crushed material carrying-in structure which concerns on one Embodiment of this invention. It is sectional drawing of the receiving tooth and external movement tooth | gear of the crushing apparatus provided with the to-be-crushed object carrying-in structure which concerns on one Embodiment of this invention. It is the figure which showed the sieving chain of the to-be-crushed thing carrying structure which concerns on one Embodiment of this invention. It is a schematic sectional drawing of the crushing apparatus provided with the to-be-crushed object carrying-in structure which concerns on one Embodiment of this invention. It is sectional drawing of the sieve chain of the to-be-crushed material carrying structure which concerns on one Embodiment of this invention. It is a figure which shows the 1st modification of the sieving chain of the crushed object carrying-in structure which concerns on one Embodiment of this invention. It is a figure which shows the 2nd modification of the sieving chain of the crushed object carrying-in structure which concerns on one Embodiment of this invention.

  The present invention relates to a vibration feeder in which a sieve chain is suspended in parallel in a plurality of rows from above in the vicinity of a conveyance end, and a crushing device configured to crush the object to be crushed conveyed from the vibration feeder between a receiving tooth and an externally driven tooth; In addition, multiple rows of sieving chains arranged side by side are arranged with varying weight according to the difference in conveyance density due to the bias of the object to be crushed, and the conveyance density from the vibration feeder is made as wide as possible in all widths. It is a structure for carrying an object to be crushed into a crushing device, characterized in that it is configured to equalize. In other words, even if the objects to be crushed are conveyed in a biased state, the conveyance density from the conveying unit can be equalized as much as possible in the entire width. It becomes possible to process evenly, and the period during which the crushing part is consumed can be maximized.

  Hereinafter, the crushed object carrying-in structure to the crushing apparatus which concerns on one Embodiment of this invention is demonstrated, referring drawings.

  In this description, structures and parts that are the same or symmetrical on the left and right are given the same reference numerals in principle, only one of the left and right is described, and the description of the other is omitted as appropriate.

  FIG. 1 is a schematic cross-sectional view showing a conveying unit 2, a carry-out unit 3, and a crushing unit 4 of a jaw crusher 1 that is a crushing device 1, and FIG. 2 is a schematic cross-sectional view showing a use state of the jaw crusher 1. is there. FIG. 3 shows an upper perspective view of the conveying unit 2 and the crushing unit 4 of the jaw crusher 1. 1 to 3 show a state in which a sieve chain 30a according to an embodiment of the present invention is suspended in the vicinity of the conveyance end 21 of the jaw crusher 1.

  The jaw crusher 1 is loaded with various types of objects to be crushed A such as concrete lumps, asphalt lumps, rocks and natural stones generated at construction sites and disaster sites, etc. B is reused.

  The jaw crusher 1 has a fixed type that is installed and used in a factory or the like, and a movable type that has a movable traveling part (not shown) and that can be crushed at any outdoor location. The present invention is applicable to any of these types.

  The conveying section 2 of the jaw crusher 1 includes a mortar-shaped hopper 5 that expands upward as a case for holding the input object A to be crushed, and the object to be crushed accommodated in the hopper 5 below the hopper 5. It is comprised with the vibration feeder 6 for conveying the thing A (A2) to the crushing part 4. FIG.

  Further, the vibration feeder 6 includes a flat surface feeder 7 that first receives the object A to be crushed, and a comb for selecting and separating the object A1 that is conveyed from the surface feeder 7 and has a predetermined size or less (small). It is composed of a tooth-shaped grizzly river 8.

  The hopper 5 and the vibration feeder 6 are disposed independently. The vibration feeder 6 is connected to a part of the jaw crusher 1 via a spring (not shown) below, and is surfaced by a hydraulic motor or the like (not shown). The feeder 7 and the grizzly river 8 are configured to vibrate. Excitation by the vibration feeder 6 is vibration that enables the object A to be crushed to be conveyed from the left side to the right side of the hopper 5 in FIGS. 1 and 2.

  The grizzly river 8 forms a part of the vibration feeder 6, is arranged in a stepped manner from the surface feeder 7 side toward the crushing portion 4 side, and is formed in a comb-like shape toward the crushing portion 4. The grizzly river 8 is composed of a first grizzly river 9 disposed slightly below the upper surface of the adjacent surface feeder 7 and a second grizzly river 10 disposed slightly below it, and finally. The object to be crushed A is configured such that only the large object to be crushed A2 is input to the crushing part 4 through the second grizzly river 10.

  The carry-out unit 3 is disposed below the duct 11 of the cylindrical feeder 11 of the vibration feeder 6 and below the duct 11, and is disposed below the crushing unit 4 to be described later. It is comprised with the conveyor 12 extended to the exterior.

  Therefore, the small crushed object A1 that has passed through the gaps between the comb teeth of the first and second grizzly rivers 9 and 10 falls down from between the comb teeth and is guided to the conveyor 12 through the duct 11. It is burned.

  In addition, the conveyor 12 similarly guides a crushed material B1 crushed to a predetermined size by the crushing unit 4 from a large crushed material A2 charged into the crushing unit 4 described later. It is carried out of the crusher 1.

  The large object to be crushed A2 after the small object to be crushed A1 is separated passes through the second grizzly river 10 and is put into the crushing chamber 13 of the crushing unit 4.

  The crushing chamber 13 is provided with a receiving tooth 14 on the conveying section 2 side, an externally moving tooth 15 is provided opposite to it, and opposite side walls extending substantially perpendicular to both the teeth 14 and 15 in the vertical direction (see FIG. (Not shown) is disposed with both teeth 14 and 15 sandwiched therebetween, and the space surrounded by these is referred to as a crushing chamber 13. Further, the receiving teeth 14 and the externally moving teeth 15 are arranged in a substantially V shape in a side view, and only the crushed material B1 crushed to a predetermined size is provided at the lower end portion where the receiving teeth 14 and the externally moving teeth 15 are close to each other. Forms a gap 16 through which can pass.

  The receiving teeth 14 are substantially plate-shaped having a predetermined thickness and are fixed to the jaw crusher 1 main body. As shown in FIG. The portions 18 are alternately formed.

  The externally moving teeth 15 are also fixed to the swing block 22 in a substantially plate shape having a predetermined thickness, and as shown in FIG. And the externally moving tooth convex portions 20 are alternately formed, and the tooth receiving concave groove 17 and the tooth receiving convex portion 18 of the tooth receiving portion 14 are configured to be substantially fitted at a predetermined interval. .

  The externally moving teeth 15 fixed to the swing block 22 are brought close to and away from the entire width of the externally moving teeth 15 toward the receiving teeth 14 while maintaining the gap 16 at the lower end formed by the externally moving teeth 15 and the receiving teeth 14. It can be swung so that it can move up and down. Therefore, the large crushed object A2 thrown into the crushing chamber 13 is crushed while being pressed between the externally moving teeth 15 and the receiving teeth 14 and gradually becomes small and is discharged from the gap 16 at the lower end. become.

  The swing block 22 enables the above-described movement by a flywheel (not shown) that rotates from a hydraulic motor (not shown) via a belt or the like (not shown).

  The discharged crushed material B <b> 1 is guided onto the conveyor 12 positioned below and is carried out of the jaw crusher 1.

  By comprising in this way, the to-be-crushed object A of various magnitude | sizes can be crushed into the crushed material B below predetermined size, and the crushed material B can be accommodated in a predetermined place with the conveyor 12. Become.

  With respect to the jaw crusher 1 configured as described above, the crushed material carrying structure is configured by arranging the sieving chain 30a according to the embodiment of the present invention.

  As shown in FIGS. 1 and 3, the sieving chain 30a according to the embodiment of the present invention is connected to a hook 32 connected to a stay 31 interposed in the upper part of the hopper 5 in the vicinity of the conveyance end 21 and the head of the sieving chain 30a. The parts are engaged and suspended by a length reaching the surface of the second grizzly river 10.

  Specifically, as shown in FIG. 5, the lower portion of the stay 31 interposed between the upper widths of the hopper 5 is provided with six hooks 32 at equal intervals with the entire width of the vibration feeder 6 being the maximum width, The hook 32 is engaged with the upper end portion of the sieve chain 30a.

  Here, depending on the initial characteristics and installation state of the vibration feeder 6, the conveyance density of the object to be crushed A is not necessarily uniform over the entire width. For example, when the object A to be crushed is always transported with a bias toward the center of the vibration feeder 6, the large object A <b> 2 put into the crushing chamber 13 is crushed by the receiving teeth 14 and the externally moving teeth 15. Even at times, the crushing process is concentrated on the entire width in the center.

  Accordingly, the tooth receiving convex portion 18 and the outer moving tooth convex portion 20 in the vicinity of the center portion of the tooth receiving teeth 14 and the external moving teeth 15 are particularly consumed as compared with other portions as shown in FIG. However, although the overall wear degree of the receiving tooth 14 and the externally moving tooth 15 is low, the tooth 14 cannot be crushed to an appropriate size due to the extreme wear of the central portion. , 15 will be replaced faster than necessary.

  In one embodiment according to the present invention for improving such a situation, as described above, the case where large crushed objects A2 are concentrated near the center with respect to the full width of the vibration feeder 6 will be described below as an example. However, the present invention is not limited to this, and even if the object to be crushed A is concentrated at any location of the vibration feeder 6, it can be dealt with based on the same idea and within the scope of the present invention. is there.

  First, as shown in FIG. 1 and FIG. 3 described above, the width of the vibration feeder 6 corresponds to the width of the vibration feeder 6 so as to be substantially perpendicular to the conveyance direction of the object to be crushed near the conveyance end of the vibration feeder 6 and above the hopper 5. Then, one row of chain curtains 33a is arranged so that the weight of the sieving chain 30a decreases from the center to the outside.

  Specifically, as shown in FIG. 5, the sieving chain 30 a is provided with the heaviest (thick) large chains 37 at two positions in the center, and the outer sides adjacent to the large chains 37 are larger than the large chains 37. A lighter middle chain 38 is disposed, and a small chain 39 that is lighter than the middle chain 38 is disposed on each outer side adjacent to the middle chain 38. By arranging in this way, a row of chain curtains 33a having a lighter weight from the center to the side of the full width of the vibration feeder 6 is formed.

  Various sizes of objects to be crushed A that have been put into the hopper 5 and passed through the surface feeder 7 are conveyed toward the conveyance end side, and the large objects to be crushed A2 that have passed through the first and second grizzly rivers 9 and 10 are chained. The curtain 33a is reached. The large object to be crushed A2 gathered and conveyed at the center of the width of the vibration feeder 6 is temporarily blocked by the large chain 37 located at the center of the chain curtain 33a, and the subsequent object to be crushed stays there. The middle chain 38 and the small chain 39 are distributed to the left and right sides by the large crushed object A2 in front. Further, the large object to be crushed A2 dammed to the large chain 37 is pushed up into the crushing unit 4 by pushing up the large chain 37 by the conveying force of the vibration feeder 6 or the force of the subsequent large object to be crushed A2. start.

  Further, since the middle chain 38 is lighter than the large chain 37, the large object A <b> 2 that has been dammed up by the middle chain 38 can push up the middle chain 38 more easily than the large chain 37.

  Further, since the small chain 39 is lighter than the medium chain 38, the large object A <b> 2 that has been blocked by the small chain 39 can push up the small chain 39 more easily than the medium chain 38.

  If the chain curtain 33a is arranged as described above, the large object A2 that is temporarily dammed up by the chain curtain 33a is placed on the vibration feeder 6 due to the difference in weight of the large, medium, and small chains 37, 38, and 39. It becomes possible to equalize the conveyance density of the object to be crushed A (A2) as much as possible in the entire width, and to the crushing part 4 of the large object to be crushed A2 that has been uniformly accumulated in the entire width at the conveyance end. It is possible to match the input timing of.

  Therefore, the large crushed object A2 that is input from the vicinity 21 of the conveyance end to the crushing unit 4 is crushed in a state where it is as evenly uniform as possible in the entire width of the receiving teeth 14 and the externally moving teeth 15 of the crushing unit 4. Since the treatment can be performed, local wear of the receiving teeth 14 and the externally moving teeth 15 can be prevented.

  Further, since the arrangement of the chain curtain 33a is resistant to the large object to be crushed A2, the speed at which the large object to be crushed A2 is thrown into the crushing part 4 is slow. Therefore, since the residence time of the object A to be crushed on the grizzly river 8 becomes longer, it is possible to improve the accuracy of separating the object to be crushed A1 and the object to be crushed A2 by the sieving portion of the comb teeth. Furthermore, since only the large crushed object A2 with little mixture of the small crushed objects A1 can be put into the crushing chamber 13, the amount of crushing can be reduced, so that the receiving teeth 14, the externally moving teeth 15, the side walls, the conveyor 12, etc. Wear and damage can be reduced.

  Next, the arrangement of the chain curtain 33a will be described.

  Depending on the size and weight of the object A to be crushed, the transfer density for the entire width of the vibration feeder 6 may not be sufficiently uniformed by the above-described chain curtain 33a. In this case, the chain curtain 33a can be suspended in a plurality of rows in parallel as shown in FIG.

  6 shows a state in which the length of the sieving chain 30a of the chain curtain 33a (first chain curtain 34) closest to the crushing portion 4 is formed longer than the length reaching the upper surface of the second grizzly river 10. By forming in this way, the effect of damming the object A (A2) to be crushed by the sieving chain 30a is improved. Further, the length of the sieving chain 30a is not particularly limited, and the same applies to other chain curtains 33a.

  By providing the chain curtains 33a in parallel in a plurality of rows in this way, the force for blocking the large object to be crushed A2 by the chain curtains 33a is increased, so that the conveyance density can be controlled with higher accuracy.

  FIGS. 7A, 7B, and 7C show cross sections of the chain curtain 33a. From the bottom to the top of each figure, the first chain curtain 34, the second chain curtain 35, and the third chain. The first chain curtain 34 is the chain curtain 33a closest to the vicinity of the conveyance end, that is, the chain curtain 33a closest to the crushing portion 4, and the third chain curtain 36 is the farthest chain curtain 33a.

  Each of the first chain curtains 34 shown in FIGS. 7A, 7B, and 7C represents a cross section of the chain curtain 33a shown in FIG. 5, and the chain according to the weight of each chain. The large, medium, and small chains 37, 38, and 39 can be distinguished from each other by their thickness and the overall outer shape, and the other second and third chain curtains 35 and 36 shown in FIGS. 7 (a), (b), and (c). Similarly, the large, medium and small chains 37, 38 and 39 can be distinguished.

  For example, as shown in FIG. 7A, the second and third chain curtains 35 and 36 can be arranged in the same arrangement as the large, medium and small chains 37, 38 and 39 of the first chain curtain 34.

  Further, as shown in FIG. 7B, the outermost small chain 39 of the second chain curtain 35 is not provided, and only the large chain 37 at the center of the third chain curtain 36 is provided. You can also.

  Further, as shown in FIG. 7 (c), the third chain curtain 36 is arranged in parallel in the same arrangement as the first chain curtain 34, and the arrangement of the respective chains of the second chain curtain 35 positioned therebetween. May be disposed so as to be positioned between the respective chains disposed on the first and third chain curtains 34 and 36.

  The number of chain curtains, the number of chains suspended from the chain curtain, the arrangement of chains with different weights, etc. are changed as appropriate according to the size and weight of the material A (A2) to be crushed and the degree of deviation on the vibration feeder 6. Is possible.

  Next, a first modification regarding the mode of the chain will be described.

  FIG. 8A shows a chain curtain 33b in which a plate-like weight 40 is connected to the lower part of a sieve chain 30b having a common weight. FIG. 8B shows the weight of the weight 40 being large, medium, and small. Each side view when set in three stages is shown, and the heaviest weight 40a, the middle weight 40b, and the lightest weight 40c are shown from the left.

  The sieve chain 30b is formed integrally with the upper end portion of the rectangular plate-like base plate 41. Further, the base plate 41 is provided with connecting holes 42 and 42 at two locations at the top and bottom of the center portion.

  The weight 40 is formed in a rectangular plate shape having side surfaces having substantially the same area as both side surfaces of the base plate 41, and the two weights 40 are connected with the base plate 41 interposed therebetween. Specifically, the weight 40 is inserted into the fixing holes 43, 43 drilled so as to communicate with the connection holes 42, 42 of the base plate 41, and the bolts 44 are screwed and fixed by the nuts 45. 41.

  Therefore, if the weight (thickness) of the weight 40 is varied, regions having different weights can be freely varied in the row of chain curtains 33b.

  Even if it is a case where only the weight of only the sieving chain 30a cannot dampen a to-be-crushed object by comprising in this way, according to the weight of the large to-be-crushed object A2 made into a weight, Since the weight of 40 can be flexibly changed in a wide range, it is possible to equalize the conveyance density of the object A (A2) to be more accurately performed.

  Further, since the weight 40 is plate-shaped, the entire width of the vibration feeder 6 can be blocked by a pseudo wall formed of the weight 40 as shown in FIG. As compared with the case where the chain curtain 33a is configured alone, the object A (A2) to be crushed can be more reliably dammed.

  If the width of the base plate 41 or the weight 40 is adjusted to minimize the gap between the adjacent weights 40, the effect of the pseudo wall is further increased.

  Further, as in the case of the chain curtain 33a composed only of the sieve chain 30a described above, a plurality of chain curtains 33b are arranged in various variations as shown in FIGS. 7A to 7C, etc. It can also be arranged with small and medium chains 37, 38, 39.

  Next, a second modification regarding the mode of the chain will be described.

  FIGS. 9A to 9C show a state in which the weight (thickness) of each chain ring constituting the sieving chain in one sieving chain 30c is changed. FIG. 9A shows a reduced chain 50 in which the weight of the chain ring is gradually reduced from the upper part to the lower part of the sieve chain 30c, and FIG. 9B shows the weight of the chain ring from the upper part to the lower part of the sieve chain 30c. 9 (c) shows an intermediate chain 52 in which the weight of the chain ring is gradually increased from both sides of the upper and lower portions of the sieving chain 30c to the middle. is there.

  When such chains 50, 51, 52 are configured as shown in FIGS. 7A to 7C, for example, the enlarged chain 51 in which the heaviest chain ring is disposed at the bottom of the sieve chain 30c is large. The medium chain 52 is regarded as the chain 37, and the middle chain 52 having the heaviest chain ring disposed at the center of the sieving chain 30c is regarded as the middle chain 38. Further, the heaviest chain ring is disposed at the top of the sieving chain 30c. The reduced chain 50 can be disposed as a small chain 39.

  When the chain curtain 33a is configured, appropriate chains 50, 51, and 52 are arranged according to the vertical center of gravity (height) determined by the size and weight of the object A (A2) to be crushed. By doing so, since each chain ring of each sieving chain 30c accurately contacts the center of gravity of each object to be crushed A (A2), the object to be crushed A (A2) can be reliably dammed.

  When arranging a plurality of chain curtains 33c as shown in FIGS. 7A to 7C in various variations, not only the chains 50, 51 and 52 according to the second modification, It can also be arranged with the large, medium and small chains 37, 38, 39, or with the sieving chain 30b according to the first modification.

  As described above, the crushed object carrying-in structure according to an embodiment of the present invention is configured, and the preferred embodiment of the present invention has been described. However, the present invention is not limited to the specific embodiment. Rather, various modifications and changes can be made within the scope of the gist of the present invention described in the claims.

A object to be crushed A1 small object to be crushed A2 large object to be crushed B crushed object B1 crushed object 1 crusher (jaw crusher)
5 Case (hopper)
6 Vibrating feeder 14 Tooth receiving 15 Externally moving tooth 30a Sieve chain 30b Sieve chain

Claims (2)

A vibration feeder in which a sieving chain is suspended in parallel in a plurality of rows from above in the vicinity of the conveyance end, and a crushing device configured to crush the object to be crushed from the vibration feeder between a receiving tooth and an external tooth. ,
In addition, the plural rows of sieve chains arranged in parallel are arranged with varying weights according to the difference in conveyance density due to the deviation of the object to be crushed, and the conveyance density from the vibration feeder is made as uniform as possible in all widths. A structure for carrying an object to be crushed into a crushing device, characterized in that it is configured to be converted into a crusher.   The sieving chain head can be freely engaged with the case of the vibration feeder, so that the sieving chain can be freely selected according to the situation of the group of objects to be crushed and replaced with the sieving chain having a different weight. The structure for carrying a material to be crushed into the crushing apparatus according to claim 1, wherein

Images