JPH116308A - Crusher with small crushing function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to add effective and economical small crushing function to a crusher having a movable jaw. SOLUTION: A pivoting small crushing plate 14 is fixed to a bearing 13 of a pivot 6 by welding, etc., and small crushing gears 15a and 15b are projected to the pivoting small crushing plate 14. While, another small crushing gear 18 is projected to a fixed small crushing plate 17 on a fixed jaw 3 side to form, and a small crushing section is formed in a throat section of a crusher. A large- sized crushing piece crushed in advance by gradually closing a movable jaw 4 is crushed into small crushing pieces with a specific particle size in the small crushing section as if it is sheared by relative displacement between rotational operation of the small crushing gear 15 on the pivoting small crushing plate 14 side and small crushing gear 18 on the fixed small crushing plate 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher attached to a construction machine such as a power shovel and crushing a concrete structure or the like by opening and closing a jaw.

[0002]

2. Description of the Related Art A method of sequentially crushing and dismantling concrete structures, such as the dismantling of a reinforced concrete building or the like, using a jaw-opening-type crusher attached to a construction machine such as a power shovel is a method of crushing and dismantling. It is frequently used recently because of low noise generation. As one of such crushers, there is a crusher in which a movable jaw performs opening and closing operations with respect to a fixed jaw to perform crushing.

The crusher having the movable jaw is configured to sequentially crush the object to be crushed such as a concrete wall by opening and closing the movable jaw. Further, the crushed concrete pieces are conveyed to a dedicated crusher which is usually configured as a stationary type, and are crushed, that is, divided into small pieces having a predetermined particle size. As described above, the conventional apparatus for directly crushing (split) by the crusher and the apparatus for splitting the crushed pieces into smaller pieces are separately configured as separate apparatuses.

[0004]

As described above, since it is uneconomical to construct a crusher for directly crushing an object and a splitter as a separate device, a splitting function is added. Crushers have been proposed. This crusher bites the crushing target and crushes and removes the crushing target from the crushing target, that is, the tip portions of the upper and lower jaws corresponding to the front teeth of a human jaw, and connected to the tip portion. It is composed of wedge-shaped teeth implanted in the movable jaw, or small parts formed of tongue-shaped protrusions.

[0005] In the apparatus having the above-mentioned small split portion, the object is first divided into a large amount in the process of closing the movable jaw toward the fixed jaw, and the crushed pieces which are further divided by closing the movable jaw are divided into small portions. Is done. That is, at the stage of subdivision, since the opening of the movable jaw and the fixed jaw is small, the crushing surfaces of the fixed jaw and the movable jaw are located almost in parallel. Is performed. In other words, in the subdivision stage, the crushed pieces are crushed by being crushed by the fixed jaw and the movable jaw, so it is necessary to crush the pieces widely dispersed between the movable jaw and the fixed jaw. Driving energy is required. In addition, due to such a crushing operation, a part of the crushed pieces is crushed more than necessary and becomes fine particles, and it becomes impossible to reuse the crushed pieces, and extra work is required for collecting the fine particles. There are also problems such as this.

[0006]

SUMMARY OF THE INVENTION The present invention is a crushing machine constructed in view of the above-mentioned problems, and comprises means for performing a small splitting operation in the vicinity of a rotation axis of a movable jaw and a movable jaw provided with the small splitting means. A jaw opening / closing type crusher which is provided on a fixed jaw base corresponding to a portion and configured so that a movable jaw crushes an object by a relative rotation operation of a small split portion accompanying opening / closing operation about a rotation axis. Machine.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A crusher for crushing an object by opening and closing the jaws by rotating at least one of the two jaws, wherein the crusher is in the vicinity of a rotating shaft of a movable jaw. If you compare to the mouth of a person, a small split is formed in the throat. That is, one or more small projections are formed around the rotation axis, which is the center of rotation of the movable jaw, in the circumferential direction and in the axial direction of the rotation axis. On the other hand, one or more protruding pieces similar to this protruding piece are formed on the base of the fixed jaw at a position corresponding to the protruding piece forming portion of the movable jaw.

The present invention is applicable to a crusher having a pair of jaws, even if only one of the jaws is a movable jaw or both are movable jaws. However, since the embodiment can be effectively implemented by a crusher in which only one jaw is a movable jaw, a crusher in which only one jaw is a movable jaw will be described as an example including the embodiments below.

The object crushed by the opening and closing operation of the movable jaw is moved from the movable jaw side corresponding to the closing operation of the movable jaw in the small split portion formed by the protruding pieces formed at the bases of the movable jaw and the fixed jaw. The protruding piece is crushed by the pivotal movement of the protruding piece and by the relative movement with the protruding piece fixed at a predetermined position on the fixed jaw side. That is, since the small split portion always rotates regardless of the opening / closing angle of the movable jaw, the crushing target is relatively rotated on the predetermined circumference by the relative rotation of the two jaws. The object to be crushed is crushed so as to be sheared by the rotating operation. That is, in the configuration of the present invention, the subdivision is not crushed,
Since it is broken so as to be sheared or cut, by appropriately setting the interval between the protruding pieces of the movable jaw and the fixed jaw, all the crushed pieces have a predetermined size, and as in the prior art, such as pulverization due to crushing, etc. There is no problem and the energy for crushing is small.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. First, FIGS. 1 and 2 show the overall configuration of the crusher. Reference numeral 1 denotes a main body of the crusher. A bracket 2 for connecting to an arm of a construction machine such as a power shovel is formed at one end, and a fixed jaw 3 is integrated with the main body 1 at the other end. It is formed as follows. Reference numeral 4 denotes a movable jaw rotatably provided with respect to the fixed jaw 3. The movable jaw 4 rotates around a rotation shaft 6 inserted through the base of the movable jaw 4 by the driving force of a hydraulic cylinder 5. The fixed jaw 3 is configured to open and close. That is, the hydraulic cylinder 5 has a cylinder main body provided on the side of the crusher main body 1 and a distal end of the cylinder rod having a movable jaw 4.
Is connected to the support shaft 11 provided in the movable jaw 4 so that the expansion and contraction of the cylinder rod becomes the opening and closing operation of the movable jaw 4.

Reference numeral 7 denotes a fang member fixed to the tip of the movable jaw 4. At the tip of the fixed jaw 3 facing the fang member 7, the fang member 7 is attached when the movable jaw 4 is closed. A fork portion 8 having a meshing space portion at the insertion position is formed. Reference numeral 9 denotes a conventional small splitting tooth protruding from the mating surface of the movable jaw 4, which engages with an opening 10 formed in a crushing surface of the fixed jaw 3 at a position facing the tooth 9. Then, a part of the crushed pieces is divided into small pieces.

Next, the structure of the small split portion will be described mainly with reference to FIGS. The arrow 12 in FIG. 3 indicates a small split portion. The small split portion 12 is formed by forming members for small split on both the movable jaw 4 side and the fixed jaw 3 side, and the formation position is If the whole crusher is compared to the mouth of a person, it is the deep part of the crusher that hits the throat.

Reference numeral 13 in the drawing denotes a bearing fixed to the movable jaw 4 and through which the rotating shaft 6 is inserted. Small split board "
14) is fixedly provided by a strong attachment means such as welding. It is not necessary that the number of the rotating small split plates 14 be one, and a plurality of the rotating small split plates 14 may be attached in the width direction of the movable jaw 4, that is, in the axial direction of the rotating shaft 6.

Numeral 15 denotes small teeth protruding from the rotary small split plate 14. In the illustrated configuration, reference numerals 15a, 15b
Are arranged in two stages in the circumferential direction of the rotating shaft 6. As shown in FIG. 4, four small teeth are formed in the front and rear stages in the axial direction of the rotating shaft 6 respectively (only the front small tooth 15a is shown in the figure). ). Reference numeral 16 denotes a tongue protruding further forward of the front tooth group 15a, which engages with a tongue protruding from the fixed jaw 3 to be described later, and a part of the tongue. It is configured to perform.

On the other hand, a fixed split plate 17 is fixedly provided on the side of the fixed jaw 3 following the crushing surface in which the opening 10 and the like are formed. As shown in FIGS. 1 and 4, the fixed small split plate 17 faces a bent portion of the rotary small split plate 14 (a portion fixed to the bearing 13) through a flat portion connected to the crushing surface. It is configured to bend down toward the lower surface of the figure at the position where
The lower end is located at the open end of the crusher main body 1.

Numeral 18 denotes small teeth formed upright on the fixed small plate 17, and the small teeth 15 on the rotary small plate 14 side.
And at a position that does not hinder the rotation of the small teeth 15. In the configuration shown in FIG. 4, four small teeth 18 protrude in the width direction of the fixed small plate 17. Reference numeral 19 in FIG.
Reference numerals a and 19b denote tongues which are formed in front of the small teeth 18 in the width direction of the fixed small split plate 17, and the tongue 19a is formed higher than the tongues 19b in the configuration shown. In addition, the crushing object including the tongue 16 on the movable jaw 4 side is configured to abut on each tongue in order to perform crushing more effectively. However, the tongues 19a and 19b
Is not an essential element of the present invention. Reference numerals 20A and 20B shown in FIG. 2 are blades for cutting a reinforcing bar similar to the conventional type, which are attached to the movable jaw 4 and the fixed jaw 3, respectively.

Next, the operating state of the device of the present invention will be described. For example, when crushing a concrete structure such as a reinforced concrete building, a crusher attached to an arm of a construction machine is appropriately operated in accordance with the arrangement state of a ceiling surface, a floor surface, a wall, or the like, and mainly a fang member. The target object is crushed (divided roughly) so as to bite the target object by the corresponding fork portion 8. After a certain degree of division in this way, this large fragment is subdivided.

In performing the small split, the movable jaw 4 is opened, and the fork 8 of the fixed jaw 3 is slightly turned downward from the horizontal state shown in FIG. In the state, the crushed pieces CB scooped up with the fork 8 facing upward are divided into small portions 1 of the crusher 1.
The movable jaw 4 is moved to the side 2 and the movable jaw 4 is closed. The crushed pieces CB that have moved toward the small split portion 12 by this operation are crushed by the upper and lower tongues 16, 19a, and 19b, and move further back.

By the rotation of the movable jaw 4, each group of small teeth 15 a and 15 b on the side of the rotary small plate 14 also rotates about the rotary shaft 6, and a fixed small plate provided on the fixed jaw 3 side. 17 small teeth 18
Due to the relative displacement with respect to
The crushed pieces are crushed as if they were sheared by the group, the group 15b and the group of small teeth 18. As shown in FIG. 4, the small teeth 15 of the movable small plate 14 and the small teeth 18 of the fixed small plate 17 are arranged at a predetermined interval, and are crushed and pulverized as in the conventional apparatus. Therefore, the crushed pieces that have passed through the small split portion 12 have a uniform particle size and have a high value as a reusable resource.

The crushed pieces CBa that have passed through the small split portion 12 move along the bent portion of the fixed small split plate 17 and fall from the lower surface of the fixed jaw 3. In FIG. 5, a large crushed piece CB and a small crushed piece CBa are drawn in the same place to show the state of crushing.
When the construction machine is scooped, the construction machine is rotated to move the crusher to another position, and the small crushed piece Cba is divided into small pieces at the different position. It is desirable to make Reference symbol A indicates an arm of a construction machine.

FIG. 6 shows another embodiment. In this embodiment, small split teeth 22 are provided on a vertical portion of the bent portion of the fixed split plate 17 (a portion located when the fixed jaw 3 is in a horizontal state). On the other hand, the small teeth 21 on the side of the rotary small plate 14 are also configured to face the small teeth 22 on this vertical surface, and are fixed to the bearing 3 of the small rotary plate 14. The semi-circular portion is formed in a semicircular shape so as to substantially cover the circumference of the bearing 6, and four rows of small teeth 21 project from the semicircular portion. Also, a plurality of small teeth are formed so as to protrude in the axial direction of the rotating shaft 6 similarly to the above embodiment.

With such a configuration, the rotation trajectory of each small tooth 21 due to the opening and closing operation of the movable jaw 4 becomes closer to a circle, and the crushing effect by the relative circular motion of the small teeth 21 and 22 is further enhanced. be able to. In addition, blades 21a and 22a are formed at the edges where the crushed pieces come into contact with the configuration shown in the drawing, and the crushing of the object can be performed more effectively. In particular, when a reinforcing bar or the like is still implanted in a part of the crushed pieces, forming the blade can cut these reinforcing bars easily, which is very effective. In addition, the small split portion including the above embodiment is arranged at the center of rotation of the movable jaw 4 and rotates with the support shaft 11 which is a cylinder rod connection portion of a hydraulic cylinder serving as a driving force for the rotation of the movable jaw 4. Since the distance L from the axis of the shaft 6 (see FIG. 3), that is, the moment arm for rotating the small split portion 12, is large, a strong rotational torque is generated in the small split portion 12, and the conventional device Hydraulic cylinders with the same output as the hydraulic cylinders can generate sufficient subdivision capacity, and there is no need to use powerful hydraulic cylinders as used in some of the conventional devices that have subdivision functions. .

The lower part of the small part 12 is an open part.
The crushed pieces split in the small split portion 12 are configured to fall through the open portion as they are, and a closing plate 23 is formed below the small split portion 12 as shown in FIG. The bucket part 24 is formed. In this configuration, small pieces of crushed pieces are temporarily stored in the bucket section 24, and when a small amount of pieces of crushed pieces reach a certain amount by a number of small pieces, the construction machine is rotated to reduce the size of the crusher. It is moved to the split discharging place, the arm of the construction machine is operated so that the fork portion 8 of the fixed jaw 3 faces upward, and the small split is discharged from the opening 23A adjacent to the closing plate 23. In addition, it is also possible to configure such that the closing plate 23 itself opens and closes in addition to the fixed closing plate 23 to discharge the small pieces. Incidentally, the opening / closing type closing plate can be easily configured by using a small hydraulic cylinder that uses a part of the hydraulic pressure supplied to the hydraulic cylinder 5 or the like.

[0024]

According to the present invention, as specifically described above,
Since the small teeth are formed by projecting the small teeth at the bases of the movable jaw and the fixed jaw, respectively, the movable jaws are rotated to rotate the small teeth on the movable jaw and the fixed jaws. Since the object is crushed so as to be sheared by interaction with the small teeth, fine powder due to crushing does not occur, and small crushed pieces having almost the same particle size can be obtained.

Further, since a strong rotational torque is generated in the small portion, a sufficiently effective small portion can be obtained by using a hydraulic cylinder having the same output as that of the conventional device, which is economical.

[Brief description of the drawings]

FIG. 1 is a partially broken side view of a crusher according to the present invention.

FIG. 2 is a side view of the crusher according to the present invention.

FIG. 3 is an enlarged sectional partial view of a crusher showing details of a configuration of a small tooth.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a side view of a crusher and an arm portion of a construction machine showing a use state of the crusher of the present invention.

FIG. 6 is an enlarged sectional view of a small part showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher main body 3 Fixed jaw 4 Movable jaw 5 Hydraulic cylinder 6 Rotating shaft 7 Fang part 8 Fork part 11 Support shaft 12 Small part 13 Bearing 14 Rotating small plate 15 (15a, 15b) Small tooth 17 Fixed small Split plate 16, 19a, 19b Tongue 18 Small split tooth 21, 22 Small split tooth 23 Closing plate 23A Open part

Claims (8)

[Claims] In a crusher having a fixed jaw and a movable jaw that rotates with respect to the fixed jaw, a circle formed on an outer periphery of an insertion portion of a rotating shaft that supports the movable jaw among the movable jaws. Small teeth are provided on the peripheral portion, and another small tooth is provided at a position of the fixed jaw opposite to the rotation axis so as to face the small teeth. A sub-split part is formed at the base, and the object is sub-split at the sub-split part by the rotation of the movable jaw-side split teeth due to the rotation of the movable jaw and the relative displacement between the split teeth on the fixed jaw side A crusher having a subdivision function, characterized in that the crusher is configured to perform the following. 2. A tongue-shaped body protrudes forward of the position of the movable jaw with the split teeth, while a tongue-shaped body protrudes from the fixed jaw at a position substantially opposed to the tongue-shaped body. The crusher having a subdivision function according to claim 1, wherein 3. A rotary split plate is fixed to a bearing through which the rotary shaft is inserted, and a small split tooth is provided for the rotary split plate. 3. A crusher having the subdivision function according to 1 or 2. 4. The split tooth on the movable jaw side of the split teeth constituting the split portion is provided in a plurality of stages in the circumferential direction of the rotating shaft. A crusher having a subdivision function according to the above. 5. A crushing machine having a small splitting function according to claim 4, wherein a plurality of small teeth of each stage are provided in a range substantially forming a semicircle with respect to a circumferential direction of the rotating shaft. . 6. The crusher body is characterized in that the lower part of the small part of the crusher is an open part, and the small pieces crushed in the small part fall directly through the open part. A crusher having a subdivision function according to any one of claims 1 to 5. 7. A bucket portion for storing a fixed amount of small pieces is formed below the small split portion by forming a closing plate below the small split portion, and the small split piece is adjacent to the bucket portion. The crushing machine having a small splitting function according to any one of claims 1 to 5, wherein an opening for discharging is formed. 8. A bucket portion for storing a fixed amount of small pieces is formed below the small split portion by forming a closing plate below the small split portion, and the closing plate is configured to be openable and closable. A crusher having a subdivision function according to any one of claims 1 to 5, characterized in that: