JP2004275821A - Crushing teeth for jaw crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide crushing teeth for a jaw crusher constituted so as to perform attaching/detaching work safely by training a wire rope over the hanging lock parts of the crushing teeth. <P>SOLUTION: The crushing teeth of the jaw crusher are constituted by providing the hanging lock parts 22 for hanging up the fixed teeth 20 (crushing teeth) and inclined projections 24 for smoothly letting a material to be crushed slide to the upper parts of the fixed teeth 20 (crushing teeth). In a state that the wire rope is trained over the hanging lock parts 22 of the fixed teeth 20, the fixed teeth 20 are attached to a crusher main body 1 to perform detaching work. Accordingly, the falling fear of the fixed teeth 20 during work is eliminated and the enhancement of safety is achieved. Further, since the material 5 to be crushed slides on the inclined surfaces of the inclined projections continued to a charging chute 50, the material 5 to be crushed is let slide smoothly even if the hanging lock parts 22 are set to an exposed state and can be charged in a crushing space 15. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a crushing tooth of a jaw crusher for finely crushing an object to be crushed such as rock, concrete, and asphalt. More specifically, the present invention relates to a crushing tooth of a jaw crusher, which makes it possible to attach and remove the crushing tooth safely and easily when replacing the crushing tooth.
[0002]
[Prior art]
The jaw crusher is formed between fixed teeth attached to the crusher body (frame), movable teeth attached to the front surface of a swing jaw swingably provided on the crusher body, and the fixed teeth and the movable teeth. A crushing space is provided, and the object to be crushed charged into the crushing space is finely crushed by being pressed between fixed teeth and movable teeth. Since the fixed teeth and the movable teeth are worn or damaged when used for a long period of time, the fixed teeth and the movable teeth are often configured to be exchangeable and reversible.
[0003]
In particular, the fixed portion of the fixed teeth receives a force during the crushing operation and may be deformed or the like. Therefore, it is necessary to replace the fixed portion. Therefore, the mounting of the crushed teeth, particularly the fixed teeth (immobile teeth), Various proposals have been made to easily and efficiently perform the removal work (for example, Patent Documents 1 and 2). The present applicant also discloses a technique in which a wedge-shaped fastening piece provided on a side surface of a frame is used to fix an inclined notch formed on an inner surface side of a fixed tooth (a fixed tooth) (Patent Document 3).
[0004]
Furthermore, the fixed teeth 61 are heavy and cannot be lifted by a worker by hand. Therefore, when attaching and detaching the fixed teeth 61 to and from the crusher main body 60, the fixed teeth 61 need to be lifted by a hoisting and conveying means (not shown) such as a crane or a chain block. As shown in FIG. 9A, the conventional fixed teeth 61 are often provided with hook portions 64 for lifting, on the rear surface 63 side opposite to the tooth surface 62 (the crusher main body 60 side). Was. This is because, if the hook portion 64 is provided on the tooth surface 62 side, the hook portion 64 may be worn away during the crushing operation for a long time, and may be lost.
[0005]
As described above, when the hook portion 64 is on the opposite side of the tooth surface 62, the following operation is required to remove the fixed teeth 61. After loosening the tightening bolts (not shown) of the fixed teeth 61, a pad such as wood is applied to prevent the fixed teeth 61 from dropping. The operator moves the fixed teeth 61 with the crowbar 71 or the like so that the hook 64 can be reached (see FIG. 9B). The operator performs the operation of winding the wire rope 70 and hoisting the crane (not shown) while devising the hand so as not to be pinched by a piece of wood or the like and not to drop the fixed teeth 61. Then, the fixed teeth 61 are lifted via the wire rope 70 while paying attention to the interference with the input chute 69 (see FIG. 9C).
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. 59-33474 [Patent Document 2]
Japanese Utility Model Laid-Open No. 5-95649 [Patent Document 3]
Japanese Utility Model Registration No. 2578908
[Problems to be solved by the invention]
However, in the conventional attaching and detaching operations, there are many accidents in which a hand or a body is caught between the fixed teeth 61 and the crusher main body 60 or the like, or the fixed teeth 61 themselves drop, resulting in a safety problem. . For this reason, since a skilled operator carefully takes time to perform the attachment and detachment work, the work for replacing the fixed teeth becomes longer, which causes a problem that the productivity is reduced. Further, the above-mentioned patent document does not disclose a technique for solving this problem and safely attaching and detaching fixed and movable teeth.
[0008]
The present invention has been made to solve the above problems, and achieves the following objects. An object of the present invention is to provide a hanging engagement portion and an inclined convex portion on an upper surface of a crushing tooth so that a wire rope can be hooked and a wire removal operation can be performed in a state where the crushing tooth is fixedly attached to a crusher body. The object of the present invention is to provide a crushing tooth for a jaw crusher in which safety can be improved by allowing the crushing tooth to be securely attached and removed even when the crushing tooth is removed from the crash body. Another object of the present invention is to provide a crushing tooth for a jaw crusher, which is provided with an inclined surface that is continuous with the inclined surface of the charging chute on the inclined convex portion so that the material to be crushed can be smoothly slid into the crushing space. To provide.
[0009]
[Means for Solving the Problems]
The present invention takes the following means to achieve the above object.
A crushing tooth for a jaw crusher according to a first aspect of the present invention includes a crusher main body, a fixed tooth detachably fixed to the crusher main body, a swing jaw relatively moving with respect to the fixed tooth, and an acute angle opposed to the fixed tooth. Movable teeth fixed to the swing jaws so as to form a crushing space for crushing the object to be crushed with the fixed teeth, and the relative movement of the movable teeth with respect to the fixed teeth. A crushing tooth of a jaw crusher for pinching and crushing the object to be crushed, wherein the inclined surface is substantially coincident with the inclined surface of a charging chute for introducing the crushable object into the crushing space of the jaw crusher and is continuously in contact therewith. And a suspension engaging portion that is disposed adjacent to the inclined convex portion and lifts the crushed tooth, is provided above the crushed tooth.
[0010]
A crushing tooth for a jaw crusher according to a second aspect is characterized in that, in the first aspect, the inclined convex portion is a convex portion having a substantially triangular cross section and having an inclined surface on the crushing space side.
A crushing tooth for a jaw crusher according to a third aspect of the present invention is the crushing tooth for a jaw crusher according to the first or second aspect, wherein the inclined convex portion and the hanging engagement portion are provided with the same configuration below the crushing tooth, and the crushing tooth is mounted upside down. It is characterized in that it can be used even if it is used.
[0011]
A crushed tooth for a jaw crusher according to a fourth aspect is characterized in that, in the first to third aspects, the crushed tooth is a fixed tooth.
A crushing tooth for a jaw crusher according to an invention 5 is characterized in that, in the inventions 1 to 3, the crushing teeth are movable teeth.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 is a front view of a jaw crusher to which the present invention is applied, FIG. 2 is an enlarged view of a portion A in FIG. 1, FIG. 3 is a front view of a fixing tooth of the jaw crusher according to the present invention, and FIG. FIG. 5 is a plan view of the fixed tooth, FIG. 6 is a cross-sectional view of FIG. 1 taken along the line VI-VI, FIG. 7 is an explanatory view of a method of lifting the fixed tooth according to the present invention, FIG. 8 is a diagram showing another embodiment of the inclined convex portion and the hanging engagement portion.
[0013]
In order to help understand the configuration of the crushed tooth, a single toggle type jaw crusher will be described as an example as the jaw crusher 1 to which the crushed tooth of the present invention is applied, as shown in FIG. A rotation drive shaft 32 is rotatably supported by a crusher main body (hereinafter, referred to as main body) 10 via a bearing (not shown). The rotary drive shaft 32 is driven by a drive motor (not shown). An eccentric rotation shaft 33 is provided eccentrically to a rotating body (not shown) that rotates integrally with the rotation drive shaft 32.
[0014]
The eccentric rotation shaft 33 supports the upper end of the swing jaw 31. Since the eccentric rotation shaft 33 rotates eccentrically, the swing jaw 31 reciprocates with this rotation. A recess 31 a is provided at the rear of the lower end of the swing jaw 31. The plate receiver 35 fixed to the main body 10 is also provided with a depression 35a. A toggle plate 34 is provided between the depression 31 a of the swing jaw 31 and the depression 35 a of the plate receiver 35.
[0015]
A tension rod 36 is swingably attached to the lower end of the swing jaw 31. A compression coil spring 37 is interposed between a rear flange 36 a of the tension rod 36 and a spring receiver 38 fixed to the main body 10 so as to penetrate the tension rod 36.
[0016]
The movable teeth 30 having a flat plate shape are fixed to the front surface of the swing jaw 31 by movable tooth attachment means 39 including a wedge-shaped fastening member, a bolt, a nut, and the like. A flat fixed tooth 20 is attached to the slightly inclined wall inside the main body 10 so as to face the movable tooth 30. The fixed teeth 20 are set at an acute angle to the movable teeth 30, and a crushing space 15 for crushing the crushed object 5 is formed.
[0017]
A charging chute 50 is provided above the crushing space 15, and the crushed material 5 such as rock, concrete, asphalt and the like conveyed by the feeder 51 and the like is charged into the crushing space 15. The reciprocating motion of the movable teeth 30 causes relative movement between the fixed teeth 20 and the movable teeth 30, and the crushed material 5 put into the crushing space 15 is pinched and finely crushed. The finely crushed material 5 is discharged from the lower portion of the jaw crusher 1.
[0018]
Next, the configuration of the crushed tooth of the present invention will be described in detail using a fixed tooth as an example. As shown in FIGS. 2 to 5, the fixed tooth 20 has a tooth surface 21 at a front portion, and a rear surface 26 at an opposite side (back side) of the tooth surface 21. Protruding edges 20a and 20b are formed on the upper and lower portions of the fixed teeth 20. At the center of the upper surface of the fixed teeth 20, an inclined convex portion 24 having an inclined surface 24 a for allowing the crushed object 5 to fall from the input chute 50 and smoothly slide is provided. The inclined surface 24a has the same or substantially the same inclination angle as the inclined surface of the input chute 50, and forms a continuous inclined surface.
[0019]
That is, the material 5 to be crushed slides smoothly on the inclined surface of the charging chute 50 and the inclined surface 24 a of the inclined convex portion 24, and is thrown into the crushing space 15. On both sides of the inclined convex portion 24, hanging engaging portions 22, 22 having hanging holes 23 for lifting the fixed teeth 20 are provided. As shown in FIG. 2, there is a space between the inclined convex portion 24 and the suspending engagement portion 22, but the space is filled with the fine crushed object 5 during the crushing process, and the shape follows the substantially inclined surface 24 a.
[0020]
For this reason, since the crushed object 5 that has slid on the inclined surface 24a is configured to hardly hit the hanging engagement portions 22, 22, the crushed object 5 slides to cause the hanging engagement portions 22, 22. It will not be damaged or worn. On both side surfaces of the upper protruding edge portion 20a, inclined cutout portions 25, 25 are formed. The inclined notch 25 is provided for attaching and fixing the fixed teeth 20 to the main body 10.
[0021]
As shown in FIG. 6, fixed teeth attaching means including a wedge-shaped fastening piece (hereinafter referred to as a cotter) 11, a bolt 12, a nut 13, and a compression coil spring 14 are provided on a side portion 10 a of the main body 10. That is, when the nuts 13 are evenly tightened, the cotters 11, 11 move against the compression coil springs 14, 14.
[0022]
When the cotter 11 is brought into contact with the inclined surface of the inclined cutout portion 25 of the fixed tooth 20 and the upper surface of the main body 10, the cotter 11 pushes up the fixed tooth 20, and the inner surface 27 b of the lower protruding edge 20 b of the fixed tooth 20 and The lower surface of the main body 10 is locked. Further, by tightening the nut 13, the cotter 11 is press-fitted between the inclined surface of the inclined notch 25 and the upper surface of the main body 10, and the fixed teeth 20 are firmly fixed to the main body 10.
[0023]
In this embodiment, the inclined teeth 24 having the inclined surface 24a for sliding the object 5 to be crushed and the fixed teeth 20 are lifted below the fixed teeth 20 in the same configuration as the upper part. Are provided with the hanging engagement portions 22, 22 in which the hanging holes 23 are formed, and the inclined cutout portions 25, 25 for fixing the fixed teeth 20. This is because the fixed teeth 20 are turned upside down and fixed, so that the crushing operation can be performed. Note that the inclined convex portion 24, the hanging engagement portions 22, 22, and the inclined cutout portions 25, 25 may be provided only on one surface (for example, the upper surface in FIG. 3).
[0024]
Next, a method of removing the fixed teeth 20 when exchanging the fixed teeth 20 from the main body 10 will be described with reference to FIG. In a state where the fixed teeth 20 are attached and fixed to the main body 10, a wire hanging operation of passing the wire rope 55 through the hanging hole 23 of the hanging engagement portion 22 is performed. An operation of hoisting a hoisting and conveying means (not shown, hereinafter referred to as a crane) such as a crane and a chain block is performed so that the wire rope 55 has a slight slack.
[0025]
This is a procedure for keeping the fixed teeth 20 suspended and supported by the wire rope 55 even when the fixed teeth 20 are detached from the main body 10 for some reason when the fixed teeth 20 are released, so as not to drop. is there. Next, the operation opposite to the mounting of the cotter 11 is performed to remove the fixed teeth 20. That is, the nuts 13, 13 of the fixed tooth attaching means are loosened, the engagement between the cotters 11, 11 and the inclined notches 25, 25 is released, and the fixing of the main body 10 and the fixed teeth 20 is released.
[0026]
At this time, the work of releasing the fixing of the fixing teeth 20 attaching means can be performed from the outside of the side of the main body 10, so that the work is easy. When the crane is hoisted while slightly moving the fixed teeth 20 forward, that is, toward the movable teeth side in order to avoid the contact between the fixed teeth 20 and the input chute 50, the fixed teeth 20 are moved through the wire rope 55 as shown in FIG. The chute 50 can be lifted so as to avoid it.
[0027]
When replacing the fixed tooth 20 with another fixed tooth or turning the fixed tooth 20 upside down and attaching and fixing the fixed tooth 20 to the main body 10, the above-described removal operation may be performed in reverse. Also in this fixing work, the wire rope 55 can be detached from the suspending engagement portions 22, 22 after the fixing teeth 20 are fixed to the main body 10, so that the fixing work can be performed safely.
[0028]
During the crushing operation, the crushed object 5 smoothly slides on the inclined surface of the input chute 50 and the inclined surface 24a of the inclined convex portion 24, and hardly hits the hanging engagement portions 22, 22, as described above. Since the suspension engaging portion 22 can be put into the crushing space 15, the suspension engaging portion 22 is not damaged or worn.
[0029]
In addition, as shown in FIG. 2, it is preferable that the inclined surface 24 a of the inclined convex portion 24 is higher than the head of the hanging engagement portion 22, but as shown in FIG. 8, the inclined surface 124 a of the inclined convex portion 124 is crushed. It may be configured to be slightly lower so as not to hinder the object 5 from sliding. In addition, the description has been given assuming that the inclined surfaces 24a and 124a are planar, but the inclined surfaces 24a and 124a are in contact with the input chute 50 in a shape that allows easy sliding, and the input chute 50 is inclined toward the crushing space 15 where the object 5 to be crushed falls. If it is a configuration that slides continuously with a surface, for example, the inclined surface is a curved surface, a combination of flat surfaces, a combination of a flat surface and a curved surface, or a configuration in which an inclined surface is formed by adding another member or the like. It may be.
[0030]
Further, the description has been given of an example in which the suspension engaging portion and the inclined convex portion are provided integrally with the fixed tooth. However, at least one of the hanging engaging portion and the inclined convex portion is formed separately, and a bolt is attached to the fixed tooth. It may be fixed by a fastening member. Further, the hanging engagement portion may be a hook in a hook shape instead of a hole type. Further, the suspension engaging portion may be provided substantially at the center of the inclined convex portion.
As described above, the crushing teeth are described in detail as fixed teeth, but it is needless to say that the configuration of the crushing teeth of the present invention can be applied to movable teeth. Since the movable teeth have substantially the same configuration as the fixed teeth, the same description on the movable teeth is omitted.
[0031]
【The invention's effect】
When the crushing teeth are removed from the crusher body, the crusher body can be hooked onto the wire rope with a crane while the crushing body is fixed with the crushing teeth, avoiding the interference between the chute and the crushing teeth. As a result, work safety has improved. Conversely, when the crushing teeth are attached to the crush main body, the wire rope can be detached from the hanging engagement portion after the fracturing teeth are attached and fixed to the crush main body.
[0032]
Therefore, there is no possibility that the crushed teeth fall or fall, and the safety is dramatically improved. Also, since the inclined surface of the injection chute and the inclined surface of the inclined convex portion are continuously in contact with each other, even if the hanging engagement portion is located above the crushing teeth, the object to be crushed slides smoothly, and the jaw crusher is moved. It can be put into the crushing space. Further, since there is almost no interference between the input chute and the crushing teeth, the operation of lifting the crushing teeth can be easily performed, and even a non-skilled person can easily mount and remove the operation by operating the crane. In addition, since the smashed object slides on the inclined convex portion and the crushed object slides on the inclined convex portion, there is no breakage or wear even if the hanging engaging portion is exposed.
[Brief description of the drawings]
FIG. 1 is a front view of a jaw crusher to which a crushed tooth of the present invention is applied.
FIG. 2 is an enlarged view of a portion A in FIG. 1;
FIG. 3 is a front view of a fixed tooth according to the present invention.
FIG. 4 is a side view of a fixed tooth according to the present invention.
FIG. 5 is a plan view of a fixed tooth according to the present invention.
FIG. 6 is a cross-sectional view of FIG. 1 taken along line VI-VI.
FIG. 7 is an explanatory view of a method of lifting fixed teeth according to the present invention.
FIG. 8 is a diagram showing another embodiment of the crushing teeth of the present invention with the inclined convex portion and the hanging engagement portion.
FIG. 9 is an explanatory view of a conventional method of removing fixed teeth for jaw crushers.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Crusher main body 5 ... Crushed object 10 ... Crusher main body 15 ... Crushing space 20 ... Fixed teeth 21 ... Tooth surface 22 ... Suspension engaging part 23 ... Suspension hole 24 ... Inclined convex portion 24a ... Inclined surface 25 ... Inclined notch Part 26 ... rear surface 30 ... movable teeth 31 ... swing jaw 32 ... rotation drive shaft 33 ... eccentric rotation shaft 50 ... loading chute 52 ... feeder

Claims (5)

A crusher main body, fixed teeth detachably fixed to the crusher main body, a swing jaw relatively moving with respect to the fixed teeth, and an object set at an acute angle to the fixed teeth to crush an object to be crushed. Movable teeth fixed to the swing jaws so as to form a crushing space between the movable teeth and the fixed teeth, and crushes the object to be crushed by the relative movement of the movable teeth with respect to the fixed teeth. Jaw crusher crushing teeth
An inclined convex portion having an inclined surface that is substantially coincident with and continuously in contact with an inclined surface of a charging chute for introducing the crushed object into the crushing space of the jaw crusher; A crushing tooth for a jaw crusher, wherein a hanging engaging portion for lifting teeth is provided above the crushing tooth. The crushing teeth for jaw crushers according to claim 1,
A crushing tooth for a jaw crusher, wherein the inclined convex portion is a convex portion having a substantially triangular cross section and having an inclined surface on the crushing space side. The crushing teeth for jaw crushers according to claim 1 or 2, wherein the inclined convex portion and the suspension engaging portion are provided in the same configuration below the crushing teeth, and the crushing teeth are mounted upside down. A crushing tooth for a jaw crusher, characterized in that the crushing tooth is shaped so that it can be used. A crushing tooth for jaw crushers according to any one of claims 1 to 3,
The crushing teeth for jaw crushers, wherein the crushing teeth are fixed teeth. A crushing tooth for jaw crushers according to any one of claims 1 to 3,
A crushing tooth for a jaw crusher, wherein the crushing tooth is a movable tooth.

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