JP2012075969A - Hammer for breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure breaking with a hammer head and to reduce a replacement cost of the hammer head 9 worn by breaking in a breaker for breaking by allowing waste articles such as refuse to collide against the rotating hammer head 9.SOLUTION: The hammer head 9 of the hammer 3 includes a base hammer head 91 retractably arranged at an intermediate part of a hammer arm 31, and a tip hammer head 92 detachably connected to the free end side of the hammer arm 31 by a connecting pin 93.

Description

  The present invention relates to a hammer in a crusher that crushes waste products such as dust, glass, and metal materials.

  Conventionally, one end of a hammer arm is fixed to a drive shaft provided in a crushing container, a hammer head is detachably connected to the other end of the hammer arm by a connecting pin, and the hammer head is rotated by rotation of the drive shaft. 2. Description of the Related Art A crusher hammer that collides waste items such as dust put into a crushing container by force to crush waste items is known. Further, the hammer head is formed so as to increase the weight of the hammer head itself in order to increase the centrifugal force and to reliably crush the waste product (for example, Patent Document 1).

Japanese Patent No. 4052928

  By the way, if the crushing of the waste product is repeated, the edge portion formed on each side of the hammer head wears, and the efficiency of the crushing operation of the waste product is deteriorated. Therefore, the hammer head with the worn edge portion is replaced with a new hammer head. However, since the mass of the hammer head itself is large and expensive, there is a problem that the cost for replacing the hammer head is high.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a hammer in a new crusher that can reliably crush waste products using a hammer head and can replace the hammer head at a low cost. Is.

  In order to achieve the above object, the present invention provides a hammer arm connected to a rotating body, a base hammer head that is removably inserted into an intermediate portion of the hammer arm, and a connecting pin on the free end side of the hammer arm. It has the tip part hammer head connected by this. As a result, when crushing the waste product, the waste product can be crushed by the centrifugal force generated by the weight of the base hammer head and the weight of the tip hammer head, and the edge portion of the tip hammer head is worn by crushing the waste product. In addition, since only the front hammerhead needs to be replaced, the replacement cost of the hammerhead is reduced.

  Further, according to the present invention, an engagement portion may be formed on one of the front hammer head and the base hammer head, and an engaged portion that can be engaged with the engagement portion on the other. Accordingly, when the waste product is crushed, the engaging portion and the engaged portion are engaged, and the movement of the base hammer head with respect to the front hammer head is restricted in the width direction. And can be efficiently crushed.

  ADVANTAGE OF THE INVENTION According to this invention, regarding the crusher which crushes by colliding the hammer head rotated with a rotary body with a waste product, it can crush a waste product reliably and can make the replacement cost of a hammer head low.

The partially broken front view of the crusher provided with the hammer of this invention. The exploded perspective view of a hammer. Top view of the hammer. AA sectional drawing of FIG. (A) is a top view of a base hammer head, (b) is a right view of a base hammer head. (A) is a top view of a front hammer head, (b) is a right side view of the front hammer head. The top view which shows the abrasion state of a hammer head. (A) is a top view of the base hammer head in other embodiment, (b) is a right view of the base hammer head in other embodiment. (A) is a top view of the front part hammer head in other embodiment, (b) is a right view of the front part hammer head in other embodiment.

  Embodiments of the present invention will be specifically described below based on the embodiments of the present invention illustrated in the accompanying drawings.

FIG. 1 is a partially broken side view of a crusher equipped with a hammer according to the present invention. 1 is defined as the upper side, and the lower side of the sheet in FIG. 1 is defined as the lower side.
As shown in FIG. 1, the crusher H includes a crushing device 2 having a plurality of hammers 3 in a crushing container 1. The crushing container 1 is composed of a funnel-shaped upper crushing container 11 and a cylindrical lower crushing container 12. An inlet 13 is formed on the upper surface of one side of the upper crushing container 11, and an outlet 14 is formed on the upper surface of the other side. The outlet 14 is closed by a jumping door 15. An explosion-proof device 16 is provided at the upper portion of the outlet 14 to allow the blast generated when the spray can mixed in the waste product explodes due to crushing by the hammer 3 to the outside of the crusher H. Further, a discharge port 17 is provided on one side surface of the lower crushing container 12.

  A drive shaft 21 extending in the height direction is rotatably supported via a bearing 22 at the center of the crushing container 1. The drive shaft 21 is connected to a prime mover 23 mounted on the upper center of the crushing container 1 via a joint 24. A plurality of rotating bodies 25 are connected to the drive shaft 21 in the height direction by keys. Support shafts 26 extending in the height direction are attached to the peripheral portions of the plurality of rotating bodies 25 at regular intervals in the circumferential direction of the rotating body 25. One end of a hammer 3 to be described later is connected to the support shaft 26. The crushing device C includes a drive shaft 21, a bearing 22, a prime mover 23, a joint 24, a rotating body 25, a support shaft 26, and a hammer 3.

Next, the hammer 3 will be described. FIG. 2 is an exploded perspective view of the hammer. FIG. 3 is a plan view of the hammer. 4 is a cross-sectional view taken along line AA in FIG. FIG. 5A is a plan view of the base hammer head, and FIG. 5B is a right side view of the base hammer head. FIG. 6A is a plan view of the tip hammer head, and FIG. 6B is a right side view of the tip hammer head.
As shown in FIGS. 2 to 4, the base end side where the support hole 312 of the hammer arm 31 described later is formed is defined as the rear side, and the tip end side (free end side) of the hammer arm 31 described later is defined as the front side. To do.

  As shown in FIGS. 2 and 3, the hammer 3 includes a hammer arm 31 whose base end is pivotally supported by the support shaft 26 and a book attached to the distal end side (free end side) of the hammer arm 31. The hammerhead 9 according to the present invention and a connecting pin 93 that connects the hammerhead 9 and the hammer arm 31 are configured.

  As shown in FIG. 2, the hammer arm 31 is formed of a plate member 311 having a rectangular main portion. A boss portion 313 having a support hole 312 inserted into the support shaft 26 is formed at the base end portion of the hammer arm 31, and an arm hole 314 penetrating the upper and lower surfaces of the hammer arm 31 is formed at the distal end portion thereof. ing. As shown in FIG. 4, the arm hole 314 is formed from the upper surface of the hammer arm 31 toward the lower surface, is formed with a circular upper arm hole 314 a having an axis in the vertical direction, and is formed from the lower surface of the hammer arm 31 toward the upper surface. The upper arm hole 314a is formed by a circular lower arm hole 314b having an axial line slightly deviated from the axial center of the hammer arm 31 to the tip end side of the hammer arm 31. The upper arm hole 314a and the lower arm hole 314b form a step 315 at the lower rear edge of the arm hole 314. The step portion 315 engages with a connecting pin 93 to be described later, and prevents positioning and dropping of the connecting pin 93 when assembled. Further, the boss portion 313 is formed with a thick portion 316 extending toward the tip end side.

  As shown in FIGS. 2 and 3, the hammer head 9 is composed of a base hammer head 91 and a tip hammer head 92. Hereinafter, the base hammer head 91 and the tip hammer head 92 will be described in detail.

  As shown in FIGS. 2 to 5, the base hammer head 91 is provided with a concave portion 911 (corresponding to an engaged portion of the present invention) having an arc shape in a plan view on the upper and lower surfaces of the center portion of the front end of the planar rectangular member. It has a different shape. The front surface of the base hammer head 91 including the concave portion 911 serves as a contact surface 912 that can come into contact with a front hammer head 92 described later. In particular, the concave portion 911 is a convex portion 921 of the front hammer head 92 described later (the present invention). Can be engaged). The rear surface of the base hammer head 91 is a contact surface 913 that can contact the thick portion 316 of the boss portion 313. In the front-rear direction of the base hammer head 91, a through hole 914 made of a square hole is formed.

  As shown in FIGS. 2 to 4 and 6, the front hammerhead 92 has a convex portion 921 (projecting in a circular arc shape in plan view) with a front end of a substantially trapezoidal planar member having an arc shape and a central portion at the rear end. The shape is provided with an equivalent to the engaging portion of the present invention. The rear surface of the tip hammer head 92 including the convex portion 921 is a contact surface 922 that can contact the contact surface 912 of the base hammer head 91. A through hole 923 made of a square hole is formed in the front-rear direction of the tip hammer head 92. An upper head hole 924 and a lower head hole 925 having the same axis line in the vertical direction are formed in the center portion of the upper surface and the lower surface of the tip hammer head 92, respectively. An edge portion 926 for crushing waste products is formed on the outer edge of the tip hammer head 92 (see FIGS. 3 and 6).

As shown in FIGS. 2 and 4, the connecting pin 93 is inserted into the arm hole 314 of the hammer arm 31 and the upper head hole 924 and the lower head hole 925 of the tip hammer head 92, whereby the tip hammer is attached to the hammer arm 31. The head 92 is connected.
As shown in detail in FIG. 4, the connecting pin 93 is inserted into the upper pin 93a inserted into the upper head hole 924, the intermediate pin 93b inserted into the upper arm hole 314a, the lower arm hole 314b, and the lower head hole 925. The lower pins 93c to be inserted are vertically formed in the vertical direction and are integrally formed. The intermediate pin 93b is a perfect circle that can be inserted into the upper arm hole 314a. The upper pin 93a and the lower pin 93c are formed with the same arc surface on the front side as the intermediate pin 93b and the rear side on the intermediate pin. The arcuate surface of 93b is formed in an arcuate surface that is moved to the front side, and the whole is notched. For this reason, a crescent-shaped stepped portion 93d is formed on the rear surface of the intermediate pin 93b.

  Next, attachment of the base hammer head 91 and the tip hammer head 92 will be described. As shown in FIG. 2, first, the support shaft 26 is passed through the support hole 312 of the hammer arm 31, and the base end portion of the hammer arm 31 is attached to the support shaft 26. Then, after inserting the plate member 311 into the through hole 914 of the base hammer head 91 from the front end side of the hammer arm 31, the plate member 311 is continuously inserted into the through hole 923 of the front hammer head 92. Insert until the upper head hole 924 and the upper arm hole 314a of the hammer arm 31 coincide. Thereafter, the connecting pin 93 is passed through the upper head hole 924 and the lower head hole 925 of the leading hammer head 92 and the arm hole 314 of the hammer arm 31 to connect the hammer arm 31 and the leading hammer head 92. At this time, the connecting pin 93 is positioned in the vertical direction by being inserted into the step portion 315 formed at the rear lower edge of the arm hole 314 until the lower surface of the step portion 93d of the intermediate pin 93b is engaged. The connecting pin 93 can be prevented from dropping downward.

In this state, when the driving shaft 21 is rotated by driving the prime mover 23, the plurality of rotating bodies 25 are also rotated, and the hammer 3 rotates about the driving shaft 21 via the support shaft 26 connected to the rotating body 25. . At this time, since the base hammer head 91 is only inserted into the plate member 311 of the hammer arm 31, the base hammer head 91 moves to the distal end side of the hammer arm 31 by the centrifugal force of the base hammer head 91, and the engaged portion 911 is engaged. The contact surface 912 contacts the contact surface 922 at the joint portion 921. As a result, the movement of the base hammer head 91 in the left-right direction (width direction of the hammer arm 31) in a plan view with respect to the front hammer head 92 is restricted, and the base hammer head 91 and the front hammer head 92 are integrated. .
Therefore, at the time of crushing, the base hammer head 91 (about 12 kg) and the tip hammer head 92 (about 18 kg) are integrated, so that the total weight of the hammer head 9 is substantially the same as the conventional hammer head (about 30 kg). Therefore, it is possible to crush waste products as before.

  Further, since the base hammer head 91 is only inserted into the hammer arm 31, the base hammer head 91 can be easily attached. Further, the base hammer head 91 is restricted from moving in the longitudinal direction of the hammer arm 31 by the tip hammer head 92 connected to the hammer arm 31 by the connecting pin 93 and the thick portion 316 of the hammer arm 31. The base hammer head 91 does not fall off during crushing of the waste product.

  Further, when the leading hammer head 92 is rotated by the drive shaft 21, the leading hammer head 92 causes the upper head hole 924 and the lower head hole 925 to be rear surfaces of the upper pin 93a and the lower pin 93c of the connecting pin 93 by its centrifugal force. Move until touching. As a result, as shown in FIG. 4, the upper surface of the stepped portion 93d of the intermediate pin 93b is pressed against the inner surface (through hole 923) of the tip hammer head 92, so that the connecting pin 93 is prevented from falling off.

  Next, the wear of the hammer due to the crushing of the waste product and the replacement work of the worn hammer will be described. FIG. 7 is a plan view showing a worn state of the hammerhead.

  As described above, the base hammer head 91 and the tip hammer head 92 attached to the support shaft 26 via the hammer arm 31 rotate around the drive shaft 21 by the rotation of the drive shaft 21. And the waste goods thrown in from the inlet 13 of the crushing container 1 are hit | damaged by the edge part 926 of the front part hammer head 92, and are crushed finely.

  When the crushing of the waste product by hitting the edge portion 926 of the front hammer head 92 is repeated in this way, the front side of the front hammer head 92 is worn as shown in FIG. Due to this wear, the edge portion 926 of the tip hammer head 92 is scraped and becomes a gently curved surface. When the tip hammer head 92 is worn in this manner, the scraped edge portion 926 causes the scrapped product to escape and not be crushed even if an attempt is made to hit the scrapped product. Therefore, it is necessary to replace the hammer head.

  Next, replacement work of the hammer head 9 will be described. Since the tip hammer head 92 is worn, the connecting pin 93 is pulled out, and the worn tip hammer head 92 is removed from the plate member 311 of the hammer arm 31. Then, the new tip hammer head 92 is coupled to the hammer arm 31 using the coupling pin 93 as described above. At this time, the base hammer head 91 is not worn and does not need to be replaced. Therefore, as compared with a conventional hammer head (about 30 kg) formed by a single member, the hammer head according to the present invention only replaces the front hammer head 92 (18 kg). The weight of the member is small, and the replacement cost of the hammerhead is reduced.

  As mentioned above, although the Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention.

  For example, as shown in FIGS. 8 and 9, the concave portions 911 of the base hammer head 91 and the convex portions 921 of the tip hammer head 92 may be square. FIG. 8A is a plan view of a base hammerhead according to another embodiment, and FIG. 8B is a right side view. FIG. 9A is a plan view of a front hammerhead according to another embodiment, and FIG. 9B is a right side view. Also in this case, as in the above embodiment, when the hammer head 9 rotates about the drive shaft 21, the base hammer head 91 moves to the front side, so that the concave portion 911, the convex portion, and the 921 are engaged. Match. Therefore, the movement of the base hammer head 91 in the width direction of the hammer arm 31 relative to the front hammer head 92 is restricted, and the base hammer head 91 and the front hammer head 92 are integrated.

  In the embodiment of the present invention, the concave portion 911 of the base hammer head 91 and the convex portion 921 of the tip hammer head 92 may be eliminated. Even in this case, when the tip hammer head 92 is worn due to crushing of the waste product, it is only necessary to replace the tip hammer head 92, as compared with the replacement of the hammer head formed of a single member as in the prior art. This reduces the replacement cost.

  In the embodiment of the present invention, the hammer head 9 is composed of two members, ie, the base hammer head 91 and the tip hammer head 92, but the hammer head 9 may be composed of three or more members. .

  In the embodiment of the present invention, the connecting pin 93 is formed with the stepped portion 93d on the intermediate pin 93b. However, it may be a cylindrical connecting pin without the stepped portion 93d.

H Crusher 21 Drive shaft 31 Hammer arm 9 Hammer head 91 Base hammer head 92 Lead hammer head 93 Connecting pin

Claims (2)

A hammer arm connected to the rotating body;
A base hammer head which is inserted into the middle part of the hammer arm so as to be removably inserted;
A hammer for a crusher, comprising a tip hammer head coupled to a free end side of the hammer arm by a coupling pin. 2. The crusher according to claim 1, wherein an engagement portion is formed on one of the front hammer head and the base hammer head, and an engaged portion engageable with the engagement portion is formed on the other. Hammer.

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