JP2007190453A - Crushing tooth and self-traveling type crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crushing tooth capable of easily grasping the abrasion state of the crushing tooth, and a self-traveling type crusher. <P>SOLUTION: Holes 151, 152 are provided on lower parts of the crushing teeth 51, 52 from a back surface. Distances from apex parts of crests and bottom parts of bottoms of the crushing teeth 51, 52 before worn to bottom parts 151a, 152a of the respective holes 151, 152 are made to d1, d2 respectively. A replacement of a top and a bottom or exchange of the crushing teeth 51, 52 is not required and the distance d1 is set such that the hole 151 appears on the surface when the abrasion progresses to some extent. Further, the distance d2 is set such that the hole 152 appears on the surface when the abrasion progresses to the degree that replacement of the top and bottom or exchange of the crushing teeth 51, 52 is required. Thereby, the timing of replacement of the top and the bottom of the crushing teeth 51, 52 or exchange of the crushing teeth 51, 52 can be informed to an inspector by the holes 151, 152 appeared on the surfaces of the crushing teeth 51, 52. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to wear detection of crushing teeth used in a crushing device.

  As a self-propelled crusher equipped with a crushing device, for example, a self-propelled crusher equipped with a jaw crusher is known (see Patent Document 1).

JP 2001-70810 A

  If the crushing teeth wear out, sufficient crushing performance cannot be achieved. Therefore, measure the amount of crushing tooth wear or crushing tooth thickness, and replace the crushing teeth upside down or crushing teeth when they are worn to the wear limit. Need to do. However, since the conventional self-propelled crusher has a small maintenance space, it has been difficult to directly measure the wear amount of the crushing tooth and the thickness of the crushing tooth by approaching the crushing tooth.

(1) The crushing tooth according to the invention of claim 1 is a crushing tooth that constitutes a crushing device that crushes the object to be crushed, and the crushing tooth is located at a lower position when attached to the crushing tooth mounting portion of the crushing device. On the side, an identification means is provided that is exposed when a crushing surface for crushing an object to be crushed is worn and can be visually recognized.
(2) The invention of claim 2 is characterized in that, in the crushing tooth according to claim 1, the identification means is a hole exposed to the crushing surface when the crushing surface is worn.
(3) The invention of claim 3 is characterized in that, in the crushing tooth according to claim 2, the hole has a conical shape in which the hole diameter increases with the progress of wear of the crushing surface.
(4) According to a fourth aspect of the present invention, in the crushing tooth according to the first aspect, the identification means is a member made of a material different from a material forming the crushing surface.
(5) A self-propelled crusher according to the invention of claim 5 is equipped with a crushing tooth according to any one of claims 1 to 4, a crushing device constituted by crushing teeth, and a crushing device. And a vehicle capable of running.

  According to the present invention, it is possible to easily determine the wear state of the crushing tooth simply by visually checking the surface of the crushing tooth. Moreover, according to this invention, the inspection time of a self-propelled crusher can be shortened, and management of a self-propelled crusher can be made easy.

  With reference to FIGS. 1-5, one Embodiment of the crushing tooth and self-propelled crusher by this invention is described. Fig.1 (a), (b) is the top view and side view which show the external appearance of the self-propelled crusher of this Embodiment. The self-propelled crusher 1 includes a traveling body 11, an operation panel 20, a power unit 30, a supply device 40, a crushing device 50, a discharge bellcon 60, and a magnetic separator 70. The traveling body 11 includes a pair of left and right crawler belts 11a, and the crawler belts 11a are driven by a travel motor 11b.

  Further, the traveling body 11 is provided with a main body frame 12, and an operation panel 20, a power unit 30, a supply device 40, and a crushing device 50 are disposed on the upper portion of the main body frame 12. The operation panel 20 is an operation panel on which operation switches and the like for operating each device of the supply device 40, the crushing device 50, the discharge bell-con 60, and the magnetic separator 70 are arranged. The power unit 30 is a power source for the devices 40 to 70, and includes an engine (not shown), a hydraulic pump (not shown) driven by the engine, and the like.

  The supply device 40 is a supply device for supplying to the crushing device 50 a material to be crushed by the crushing device 50 described later, and a hopper 41 for receiving the material to be crushed and a crushing device for the material to be crushed received by the hopper 41. And a feeder 42 to be supplied to 50. The feeder 42 supplies an object to be crushed to the crushing device 50 by driving a hydraulic motor (not shown) by the pressure oil supplied from the power unit 30.

  The crushing device 50 is a crushing device that crushes the material to be crushed supplied from the feeder 42, and is located behind the hopper 41 and the feeder 42 (on the right side in FIG. 1A and FIG. 1B). The frame 12 is mounted in the vicinity of the center in the longitudinal direction (the left and right direction in FIG. 1A and FIG. 1B). The crushing device 50 is a known jaw crusher, and as shown in FIG. 2, a moving tooth 51 and a fixed tooth 52, which are a pair of crushing teeth facing each other so as to reduce the diameter of the gap space downward, are provided. ing.

  The crushing device 50 is configured such that the moving tooth 51 swings through a known conversion mechanism when the flywheel 53 is rotationally driven by a crushing device hydraulic motor (not shown). That is, the moving tooth 51 swings in the front-rear direction (the left-right direction in FIG. 2) with respect to the stationary stationary tooth 52. The crusher hydraulic motor is driven by pressure oil supplied from the power unit 30. The object to be crushed supplied from the feeder 42 is input from the input port 54 at the upper part of the crushing device 50, and is crushed between the stationary stationary tooth 52 and the swinging moving tooth 51. Discharged as crushed material.

  The discharge bell-con 60 is a belt conveyor that discharges the object to be crushed by the crushing device 50, that is, the crushed material to the rear of the self-propelled crusher 1, and the upstream end is located at the lower part of the crushing device 50. The downstream end is disposed so as to protrude rearward of the self-propelled crusher 1. The discharge bell-con 60 is configured to convey crushed material by driving a hydraulic motor (not shown) by pressure oil supplied from the power unit 30.

  The magnetic separator 70 is a device that is disposed above the discharge bell-con 60 and removes foreign matters (magnetic substances). The magnetic separator 70 is provided with a magnetic separator belt 71 disposed so as to be substantially orthogonal to the discharge bellcon 60 and magnetic force generating means (not shown) provided inside the circulation trajectory of the magnetic separator belt 71. Yes. Foreign matters such as reinforcing bars on the discharge bellcon 60 are attracted to the magnetic separator belt 71 by the magnetic force from the magnetic force generating means acting over the magnetic separator belt 71, and are conveyed to the side of the discharge bellcon 60 and dropped. The magnetic separator belt 71 is configured to convey foreign matters such as reinforcing bars when a hydraulic motor (not shown) is driven by pressure oil supplied from the power unit 30.

  In the self-propelled crusher 1 configured as described above, a crushed object put into the hopper 41 by a hydraulic excavator or the like is crushed by the crushing device 50 to generate a crushed material. Examples of materials to be crushed by the self-propelled crusher 1 (objects to be crushed) include large and small construction wastes and industries generated at construction sites such as concrete lumps carried out during building demolition and asphalt lumps discharged during road repairs. Examples include wastes, rock mining sites and rocks and natural stones mined at the face.

  FIG. 3 shows a cross section of the lower part of the crushing teeth when the moving teeth 51 and the fixed teeth 52 (hereinafter also referred to as crushing teeth 51 and 52) attached to the crushing device 50 are viewed from the side of the crushing device 50. FIG. On the surface of the crushing teeth 51, 52, that is, the surface where the crushing teeth 51, 52 attached to the crushing device 50 face each other, a crest and a trough extending in the vertical direction are provided. In the state attached to the crushing device 50, the peak of the moving tooth 51 faces the valley of the fixed tooth 52, and the valley of the moving tooth 51 faces the peak of the fixed tooth 52.

  Under the crushing teeth 51 and 52, cylindrical holes 151 and 152 are opened from the back surface over the entire width direction of the crushing teeth 51 and 52 (the depth direction in FIG. 3). The hole 151 is provided directly below the crest of the crushing teeth 51 and 52, and the hole 152 is provided directly below the trough of the crushing teeth 51 and 52. Although the adjacent hole 151 and hole 152 have different height positions, they may be substantially equal in height position. The holes 151 and 152 are provided in two steps in the vertical direction, but may be one step or three or more steps.

  Since the holes 151 and 152 do not reach the surface of the crushing teeth 51 and 52, when the crushing teeth 51 and 52 are not worn or have little wear, it can be visually confirmed from the insertion port 54 side. Can not. The moving teeth 51 and the fixed teeth 52 can be used with their tops and bottoms reversed, and holes 151 and 152 are similarly provided in the upper portions of the crushing teeth 51 and 52 not shown in FIG. For the crushing teeth 51 and 52, a material having excellent wear resistance such as wear-resistant steel is used.

  When the object to be crushed is crushed by the crushing device 50, the crushing teeth 51 and 52 are worn. However, in general, in the jaw crusher, the lower part of the crushing teeth 51 and 52 has a larger wear amount than other parts. Also, the moving tooth 51 wears more. Since the mountain wears more than the valleys of the crushing teeth 51, 52, the wear difference of the crests 51, 52 gradually decreases as the crushing teeth 51, 52 wear.

  The distance from the crests of the crushing teeth 51 and 52 before wear to the bottom 151a of the hole 151 is d1, and the distance from the bottom of the valleys of the crushing teeth 51 and 52 before wear to the bottom 152a of the hole 152 is d2. . In the present embodiment, when the crushing teeth 51 and 52 are worn, the hole 151 provided immediately below the mountain appears on the surface of the crushing teeth 51 and 52 earlier than the hole 152 provided immediately below the valley. Distances d1 and d2 are set.

  By setting the distances d1 and d2 in this way, at the stage where the wear of the crushing teeth 51 and 52 has not progressed so much, as shown in FIG. Even if it appears on the surface of 52, the hole 152 provided immediately below the valley does not appear on the surface of the crushing teeth 51, 52. In this state, the end surface 151b of the opening portion of the hole 151 that appears on the surfaces of the crushing teeth 51 and 52 can be visually confirmed from the insertion port 54 side. That is, an inspector who has climbed to the upper part of the self-propelled crusher 1 can visually confirm the end surface 151 b through the insertion port 54. In addition, since the hole 152 does not appear on the surface of the crushing teeth 51 and 52, it cannot be visually confirmed from the insertion port 54 side.

  When wear of the crushing teeth 51 and 52 further progresses, as shown in FIG. 5, a hole 152 provided immediately below the valley appears on the surface of the crushing teeth 51 and 52. In this state, the end surfaces 151b and 152b of the opening portions of the holes 151 and 152 appearing on the surfaces of the crushing teeth 51 and 52 can be visually confirmed from the insertion port 54 side. Thus, the holes 151 and 152 appear on the surface of the crushing teeth 51 and 52 in a stepwise manner according to the wear amount of the crushing teeth 51 and 52. 4 and 5, the two-dot chain lines of the crushing teeth 51 and 52 indicate the peaks and valleys of the crushing teeth 51 and 52 before wear.

  For example, the distance d1 can be set so that the hole 151 appears on the surface when wear has progressed to some extent, although there is no need to replace the crushing teeth 51, 52 and the crushing teeth 51, 52. By setting the distance d1 in this way, the hole 151 that appears on the surface of the crushing teeth 51 and 52 can be used to replace the crushing teeth 51 and 52, or the crushing teeth 51 and 52 can be replaced soon. Can inform the inspector. Thereby, it becomes possible to prepare the replacement of the crushing teeth 51 and 52 or the replacement of the crushing teeth 51 and 52 in advance, so that the replacement or replacement of the crushing teeth 51 and 52 can be performed efficiently.

  Further, the distance d2 is such that the hole 152 appears on the surface when wear progresses to the extent that it is necessary to replace the crushing teeth 51, 52 or replace the crushing teeth 51, 52, that is, the wear limit or just before the wear limit. Can be set. By setting the distance d2 in this way, it is time to replace the crushing teeth 51 and 52 or to replace the crushing teeth 51 and 52 by the holes 152 appearing on the surfaces of the crushing teeth 51 and 52. Since it is possible to inform the inspector, it is possible to properly manage the top-and-bottom replacement or replacement time.

The crushing teeth and the self-propelled crusher described above have the following effects.
(1) When the crushing teeth 51, 52 are worn, the recognizable holes 151, 152 are exposed on the surfaces of the crushing teeth 51, 52. Thereby, since the holes 151 and 152 exposed on the surfaces of the crushing teeth 51 and 52 can be visually confirmed, the wearer can easily wear the crushing teeth 51 and 52 only by visually checking the surfaces of the crushing teeth 51 and 52. Can be judged. Since these holes 151 and 152 can be easily confirmed from the upper part of the crushing device 50, the inspector approaches the crushing teeth 51 and 52 and directly determines the wear amount of the crushing teeth 51 and 52 and the thickness of the crushing teeth 51 and 52. Since there is no need to measure, the inspection of the crushing teeth 51 and 52 can be completed in a short time and the inspection cost can be reduced.

(2) Since the recognizable hole 152 is exposed on the surface of the crushing teeth 51, 52 when the crushing teeth 51, 52 are worn to the vicinity of the wear limit, the inspector removes the surface of the crushing teeth 51, 52. Whether or not it is time to replace the crushing teeth 51 and 52 or to replace the crushing teeth 51 and 52 can be easily determined by visual inspection.

(3) When the crushing teeth 51, 52 are worn to the wear limit, the hole 152 is exposed on the surface of the crushing teeth 51, 52. Since the presence or absence of the exposure of the hole 152 is obvious, the crushing teeth 51, It is possible to notify the time of replacement of the top and bottom of 52 or the replacement of the crushing teeth 51 and 52. Thereby, it can prevent that the abrasion of the crushing teeth 51 and 52 advances too much, and the particle size distribution of a crushing material will remove | deviate from predetermined particle size distribution, and the wear of the crushing teeth 51 and 52 advances too much, and crushing is carried out. Wear of the crushing teeth 51 and 52 attached to the device 50 can be prevented.

(4) The holes 151 and 152 are provided in the crushing teeth 51 and 52 of the crushing device 50 mounted on the self-propelled crusher 1. Thereby, since the wear condition of the crushing teeth 51 and 52 can be easily confirmed visually from the upper part of the crushing device 50, the inspector enters the lower part of the self-propelled crusher 1, or the moving teeth 51 and It is not necessary to directly measure the wear amount of the crushing teeth 51 and 52 and the thickness of the crushing teeth 51 and 52 by entering between the fixed teeth 52. Therefore, the inspection time of the self-propelled crusher 1 can be shortened, and management of the self-propelled crusher 1 can be facilitated.

---- Modified example ---
(1) In the above description, the distance d1 is set so that the hole 151 appears on the surface when the wear progresses to some extent, and when the wear progresses to the extent that the crushing teeth 51, 52 need to be replaced or replaced. Although the distance d2 is set so that 152 appears on the surface, the present invention is not limited to this. For example, only the hole 152 is provided, and when the hole 152 appears on the surface of the crushing teeth 51 and 52, the crushing teeth 51 and 52 may be replaced or replaced. In this case, the hole 152 does not need to be provided directly below the bottom of the valley of the crushing teeth 51 and 52, and may be directly below the top of the mountain, or in a place other than directly below the top of the mountain or the bottom of the valley. It may be provided.

  Also, by setting the depth of the hole, that is, the distance from the surface of the crushing teeth 51, 52, each hole appears on the surface at various timings according to the wear of the crushing teeth 51, 52. Also good. For example, if two holes appear on the surface of the crushing teeth 51, 52, it indicates that the wear amount is half of the wear amount that requires replacement or replacement, and four holes appear on the surface of the crushing teeth 51, 52. If it appears that the amount of wear is three-quarters of the amount of wear that needs to be replaced or replaced, and if eight holes appear on the surface of the crushing teeth 51 and 52, 10 minutes of the amount of wear that needs to be replaced or replaced The amount of wear may be expressed by the number of holes appearing on the surfaces of the crushing teeth 51 and 52.

(2) In the above description, the holes 151 and 152 are provided in the vicinity of the upper and lower ends of the crushing teeth 51 and 52, but the present invention is not limited to this. It is good also as providing the holes 151 and 152 in the whole crushing teeth 51 and 52, and in this case, the wear condition of the crushing teeth 51 and 52 worn out unevenly by the exposed state of the holes 151 and 152 is visually observed. Easy to grasp. Moreover, the holes 151 and 152 may be provided only in the particularly severely worn portions of the crushing teeth 51 and 52. For example, when wear near the center of the crushing teeth 51, 52 in the width direction (the depth direction in FIG. 3) is more severe than near the end in the width direction, near the center of the crushing teeth 51, 52 in the width direction. It is good also as providing the holes 151 and 152 only in.

(3) In the above description, the crushing teeth 51 and 52 are provided with the cylindrical holes 151 and 152, but the present invention is not limited to this. For example, as shown in FIG. 6, the crushing teeth 51 and 52 may be provided with conical holes 161 and 162. In this case, the degree of wear of the crushing teeth 51 and 52 can be confirmed by the size (diameter) of the holes 161 and 162 that appear on the surfaces of the crushing teeth 51 and 52 due to wear. It becomes easy to estimate the time for replacement or replacement of the top and bottom, and the time for replacement or replacement of the crushing teeth 51 and 52 can be appropriately managed.

(4) In the above description, the holes 151 and 152 are exposed on the surface due to wear of the crushing teeth 51 and 52, but the present invention is not limited to this. For example, as shown in FIG. 7, in the holes 151 and 152 provided in the crushing teeth 51 and 52, separate members (indicator members) 171 and 172 that can be identified when exposed on the surface of the crushing teeth 51 and 52 are holes. It may be cast in. The material of the indicator members 171 and 172 is preferably a material having a color tone different from that of the crushing teeth 51 and 52. The inspector can grasp the wear status of the crushing teeth 51 and 52 by visually confirming the indicator members 171 and 172 having different colors appearing on the surfaces of the crushing teeth 51 and 52.

  Further, the indicator members 171 and 172 may be made of a material having higher wear resistance than the crushing teeth 51 and 52 (for example, wear-resistant steel having further increased components contributing to wear resistance). In this case, since the indicator members 171 and 172 have a slower wear rate than the crushing teeth 51 and 52, when the indicator members 171 and 172 appear on the surface of the crushing teeth 51 and 52 due to wear of the crushing teeth 51 and 52, The indicator members 171 and 172 project from the surfaces of the crushing teeth 51 and 52. The inspector can grasp the worn state of the crushing teeth 51 and 52 by visually checking the protruding indicator members 171 and 172.

(5) In the above description, the holes 151 and 152 are exposed on the surface due to the wear of the crushing teeth 51 and 52, but the present invention is not limited to this. For example, as shown in FIG. 8, when female screw portions 181 and 182 that can be bolted from the back surface of the crushing teeth 51 and 52 are provided and exposed to the surfaces of the crushing teeth 51 and 52, the female screw portions 181 and 182 are exposed. Bolts 191 and 192 that can be identified may be screwed together. As in the case of (4) described above, the inspector can grasp the wear state of the crushing teeth 51 and 52 by visually confirming the bolts 191 and 192 exposed on the surfaces of the crushing teeth 51 and 52. it can.

(6) In the above description, the crushing device 50 is a jaw crusher, but the present invention is not limited to this. For example, the crushing teeth according to the present invention may be applied to crushing teeth of other types of crushing devices such as a cone crusher, a roll crusher, and a hammer crusher.
(7) You may combine each embodiment and modification which were mentioned above, respectively.

  In the above embodiment and its modifications, for example, the identification means corresponds to the holes 151, 152, 161, 162, the indicator members 171, 172, and the bolts 191, 192, and the vehicle corresponds to the traveling body 11, respectively. The above description is merely an example, and when interpreting the invention, there is no limitation or restriction on the correspondence between the items described in the above embodiment and the items described in the claims.

It is a figure which shows the external appearance of the self-propelled crusher of this Embodiment, (a) is a top view, (b) is a side view. 3 is a cross-sectional view showing a structure of a crushing device 50. FIG. 4 is a cross-sectional view of the lower portions of the crushing teeth 51 and 52 attached to the crushing device 50 when viewed from the side of the crushing device 50. FIG. It is sectional drawing which shows the state with which the crushing teeth 51 and 52 were worn. It is sectional drawing which shows the state which the crushing teeth 51 and 52 were abraded to the wear limit. It is a figure which shows a modification. It is a figure which shows a modification. It is a figure which shows a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Self-propelled crusher 11 Traveling body 30 Power unit 40 Supply apparatus 50 Crushing apparatus 60 Discharge Velcon 51 Moving tooth (crushed tooth) 52 Fixed tooth (crushed tooth)
151, 152, 161, 162 Hole 171, 172 Indicator member 191, 192 Bolt

Claims (5)

In the crushing teeth constituting the crushing device that crushes the material to be crushed,
The crushing teeth are exposed when the crushing surface for crushing the material to be crushed is worn on the inner side of the position that is lower when attached to the crushing tooth mounting portion of the crushing device, and can be visually recognized. The crushing tooth | gear characterized by providing the identification means which becomes. The crushed tooth according to claim 1,
The crushing tooth, wherein the identification means is a hole exposed to the crushing surface when the crushing surface is worn. The crushed tooth according to claim 2,
The crushing tooth according to claim 1, wherein the hole has a conical shape in which a hole diameter increases as wear of the crushing surface progresses. The crushed tooth according to claim 1,
The crushing tooth, wherein the identification means is a member made of a material different from a material forming the crushing surface. The crushed tooth according to any one of claims 1 to 4,
A crushing device constituted by the crushing teeth;
A self-propelled crusher comprising: a vehicle capable of self-propelling by mounting the crushing device.

Images