JP3981361B2 - Rubber crawler disassembly processing method and apparatus - Google Patents

Description

  The present invention relates to a technique for disassembling and treating a rubber crawler used in construction machinery, agricultural machinery, and the like.

  Rubber crawlers used in construction machines and the like have a cored bar inside. For this reason, it is necessary to dispose of the used rubber crawler separately as a core metal and rubber. Therefore, as a technique for disassembling rubber crawlers, a method has been proposed in which the core bar is dropped by its own weight and removed by tearing the rubber crawler vertically after weakening the adhesive force of the rubber by heating (Patent Document 1, Patent). Reference 2).

  More specifically, in Patent Document 1, as shown in FIG. 11, a rubber crawler W heated by a high-frequency induction heating device 103 built in a roller conveyor 101 is centered in the width direction by a cutter 105 and a spiral roller 107. A method has been proposed in which the cored bar is dropped by its own weight by tearing left and right while making a cut.

In Patent Document 2, as shown in FIG. 12, a rubber crawler W that has been heated with a longitudinal cut on the lower surface in advance is fixed to the core with an air cylinder 111 for fixing the core, and then bites into the rubber part. A method has been proposed in which the rubber crawler is torn to the left and right and only the mandrel is dropped by its own weight by moving the pulling claw 113 away.
Japanese Patent Laid-Open No. 7-299821 (FIG. 1, abstract) Japanese Patent Laid-Open No. 7-117742 (FIG. 6, abstract)

  These conventional methods of tearing a rubber crawler vertically can separate a plurality of metal cores from the rubber at the same time, and therefore cannot be implemented unless the facility can withstand the burden of power and equipment. There is. For this reason, under the present circumstances, the rubber crawler dismantling process has not progressed.

  Therefore, the present application aims to promote the dismantling processing of used rubber crawlers by enabling dismantling processing of rubber crawlers efficiently even in a small-scale facility.

  In the rubber crawler disassembly processing method of the present invention made to achieve the above object, the rubber crawler opened in a strip shape is placed so that the core metal faces the opening provided in the table portion after the core metal removal step. The rubber crawler is pressed so as not to move in the length direction, and in this state, the core metal is pressed from above the rubber crawler, and the end that has been pulled out from the rubber crawler is received at the bottom, so that the remaining one is left. A feature is that the moment is applied to the end.

The rubber crawler dismantling apparatus of the present invention suitable for carrying out the above method is
A cutting device for opening a rubber crawler having a metal core inside in a strip shape;
A cored bar extracting device for extracting the cored bar from the rubber crawler opened in a strip shape by the cutting device;
A cutting device for cutting the rubber crawler from which the metal core has been extracted by the metal core extracting device into a predetermined size;
The core metal pulling device is configured as follows.
(A) A table portion having an opening partially facing the rubber crawler that is opened in a band shape and a placement surface on which the rubber crawler can be placed before and after the opening is provided.
(B) A pressing device capable of moving from above the placement surface to below the placement surface in a state where the core metal in the rubber crawler is captured in the opening of the table portion is provided.
(C) A pressing device for pressing the rubber crawler placed on the placement surface of the table portion is provided in the vicinity of the opening.
(D) It is provided with a cradle that can be installed in the opening and can receive at least the end position from the center of the core bar pushed down by the pressing device.
(E) A cradle moving device is provided that moves the cradle between a receiving position where the metal core is to be received and a retreat position where the metal core is to be dropped downward.

  According to the rubber crawler dismantling processing apparatus of the present invention having such a configuration, the rubber crawler opened in a band shape by the cutting device is placed on the (a) table portion of the core metal pulling device, and (c) the opening is opened by the pressing device. (E) The pressing device is operated after (e) the cradle moving device is set to (d) the receiving position. Then, (b) the core bar captured by the pressing device is pulled out downward so as to be peeled off from the rubber part of the rubber crawler. At this time, the cored bar does not necessarily come out while maintaining the level, but peels off from either end first. The end peeled off first is received by (d) a cradle. As a result, the cored bar is formed with (d) a pedestal as a fulcrum, (b) a position captured by the pressing device as a power point, and a lever that acts on the end remaining in the rubber crawler without peeling off. It will be in a state of being pulled off completely from the rubber crawler. When the metal core is extracted in this manner, (e) the cradle moving device is operated, (d) the cradle is moved to the retracted position, and the metal core is dropped. Thus, the rubber crawler from which the core metal is extracted by the core metal extracting device is cut into a predetermined size by the cutting device.

Here, the rubber crawler dismantling apparatus of the present invention can also have the following configuration.
(F) The pressing device has a recess capable of capturing the cored bar at the lower end, and is configured by a rod that can stroke from above to below the mounting surface.

  The configuration (f) can be configured by, for example, a hydraulic cylinder.

Moreover, the rubber crawler dismantling apparatus of this invention can also be equipped with the following structures.
(G) The pressing device has a hooking blade capable of hooking a metal core around it, and is configured by a rotating wheel that rotates within the opening.

  The configuration (g) can be configured by, for example, a hydraulic motor.

  According to the present invention, as described above, since the end of the core bar with only one end pulled out is received by (d) the cradle, (f) the stroke of the rod is lengthened. (G) It is not necessary to make the diameter of the rotating wheel long. Therefore, (a) the table portion does not need to have a high mounting surface. As a result, according to the present invention, the apparatus can be made compact and workable.

When the rubber crawler to be dismantled is wide, the rubber crawler dismantling apparatus of the present invention is preferably provided with the following configuration.
(H) The pressing device also includes a tearing blade for longitudinally tearing the rubber of the rubber crawler.

  (H) By providing a tearing blade, the rubber crawler can be cut in the vertical direction at the same time that the metal core is withdrawn, and the rubber crawler can be in a vertically split state when processing from end to end is completed. it can.

Moreover, the rubber crawler dismantling apparatus of the present invention is preferably provided with the following configuration.
(I) The cradle moving device is constituted by a hydraulic cylinder that moves the cradle downward from the receiving position to move to the retracted position.

  By configuring the cradle moving device as shown in (i), (b) when the core bar pushed down by the pressing device hits the cradle (d) in the receiving position, the hydraulic cylinder serves as a spring and moves upward. Reduce while generating the urging force of. Therefore, (d) after receiving the mandrel, the cradle can be rotated downward while generating a reaction force as a lever fulcrum, and when the mandrel is completely removed, it is inclined obliquely. . Therefore, the fallen core metal falls downward by its own weight along this inclination, and (d) the cradle automatically returns to the receiving position. In addition, by adopting the configuration (i), it is possible to (a) set a position close to the mounting surface of the table unit as a receiving position by (d) a cradle. Accordingly, rubber crawlers having various widths from a narrow rubber crawler of a small vehicle to a wide rubber crawler of a large vehicle can be disassembled with the same apparatus.

  According to the present invention, a rubber crawler can be disassembled efficiently even in a small-scale facility. Therefore, this invention can accelerate | stimulate the disassembly process of a used rubber crawler.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. In FIG. 1, the whole structure of the rubber crawler dismantling processing apparatus 1 as embodiment is shown. This rubber crawler dismantling processing device 1 includes a cutting device 10 for opening a rubber crawler having a metal core inside in a band shape, and a metal core extracting device 30 for extracting a metal core from a rubber crawler opened in a band shape by the cutting device 10. And a cutting device 50 for cutting the rubber crawler from which the metal core has been extracted by the metal core extracting device 30 into a predetermined size. Moreover, the overhead crane 71 and the roller conveyors 72 and 73 are provided as a conveying apparatus.

  As shown in FIGS. 1 and 2, the cutting device 10 includes a pair of main body frames 11, 11 whose front side is open, a hydraulic cylinder 13 fixed to the upper part of the main body frames 11, 11, and the hydraulic cylinder And a V-shaped cutting blade 17 detachably attached to the tip of 13 rods 14 via a flange. In this cutting device 10, as shown in FIG. 2 (B), the rubber crawler W suspended by the overhead crane 71 is inserted from the front opening part of the main body frames 11, 11, and the position between the core metal and the core metal Is set so that is positioned directly below the cutting blade 17. Then, the hydraulic cylinder 13 is extended to lower the cutting blade 17, and the rubber crawler W is cut and opened in a belt shape. In this cutting device 10, since the cutting blade 17 is V-shaped, the escape of the rubber crawler W can be prevented. In addition, as an effect of adopting the V-shaped cutting blade 17, a load is not applied to the cutting blade 17 at a stretch, and a smooth cutting can be realized without applying an excessive load on the hydraulic cylinder 13.

  As shown in FIGS. 1 and 3, the core metal extracting device 30 includes a pair of main body frames 31, 31 whose front side is open, and a table portion 33 installed between the main body frames 31, 31. ing. The table portion 33 includes an opening 34 partially facing a rubber crawler opened in a band shape, and mounting surfaces 35L and 35R on which the rubber crawler can be mounted before and after the opening 34 (left and right in the drawing). It is what you have. The left mounting surface 35L is set lower than the right mounting surface 35R. Further, edge plates 36 and 36 protruding upward are attached to the mounting surfaces 35L and 35R on the opening 34 side. The edge plates 36, 36 have a role of firmly holding the rubber crawler on the table portion 33 in cooperation with a pressing device 43 described later, and a role of raising the rubber crawler slightly upward at the opening 34. have.

  The cored bar extraction device 30 further moves in the opening 34 of the table portion 33 from the top of the mounting surface to the bottom of the mounting surface while capturing the cored bar in the rubber crawler. It has. The pressing device 37 includes a hydraulic cylinder 38 fixed to the upper part of the main body frames 31, 31, and a metal core abutting member 41 that can be attached to and detached from a tip of a rod 39 of the hydraulic cylinder 38 via a flange. . The core metal abutting member 41 is formed of a steel thick plate having a recess 42 capable of capturing the core metal on the lower surface.

  Further, the core metal extracting device 30 includes a pressing device 43 that presses the rubber crawler placed on the placement surface 35 in the vicinity of the opening 34 of the table portion 33. Each pressing device 43 includes a hydraulic cylinder 44 and a pressing claw 46 that is rotatably attached to the tip of a rod 45 of the hydraulic cylinder 44. One pressing device 43 is provided before and after the opening 34 of the table portion 33.

  Furthermore, the cored bar extraction device 30 includes a cradle 47 that is installed in the opening 34 of the table portion 33 and can receive the cored bar pushed down by the pressing unit 37 from below. The cradle 47 has a width that can catch any end of the cored bar. The pedestal 47 is configured to be movable by a hydraulic cylinder 48 between a receiving position indicated by a solid line in FIG. 1 and a retracted position indicated by a dotted line in FIG.

  The rubber crawler opened in a strip shape by the cutting device 10 is placed on the roller conveyor 72 and fed into the core metal extracting device 30. The rubber crawler fed into the core metal extracting device 30 is placed on the placement surfaces 35L and 35R so that one core metal is positioned in the opening 34. At this time, as indicated by a one-dot chain line in FIG. 1, the rubber crawler is placed in a state where the front end (left side in the drawing) is lowered.

  When the rubber crawler W is thus placed on the table portion 33, the rods 45 of the hydraulic cylinders 44, 44 of the pressing devices 43, 43 are extended as shown in FIG. Press W against the table 33. Further, the hydraulic cylinder 48 is extended to move to the receiving position of the receiving base 47. Then, the rod 39 of the hydraulic cylinder 38 of the pressing device 37 is extended. Then, the metal core abutting member 41 enters the gap portion at the center of the width of the rubber crawler W, and the metal core M is captured by the depression 42. When the rod 39 is further extended, the core metal M starts to come out of the rubber crawler W as shown in FIG. At this time, the core metal M hardly comes out while maintaining the horizontal state, and starts to come out from either one of the ends.

  As shown in FIG. 5 (A), the core bar M that has been tilted out of the rubber crawler W is gradually pulled out while increasing its inclination as the rod 39 continues to expand. This increase in inclination continues until the lower end (hereinafter referred to as “lower end”) of the metal core M abuts the cradle 47. When the lower end of the cored bar M comes into contact with the cradle 47, as shown in FIG. 5B, the lower end is a fulcrum, the center near the cored bar abutting member 41 is a force point, and the remaining one is left. A lever having an end (hereinafter referred to as “upper end”) as an action point is formed. As a result, a moment in the opposite direction is applied to the upper end of the core metal M. In other words, the upper end of the metal core M also exerts a force to rotate upward when it begins to slip out, but after the lower end comes into contact with the cradle 47, the upper end is rotated downward. It will change like this. As a result, the upper end of the core metal M is also pulled out from the rubber crawler W. During this time, the cradle 47 is pushed into the rod and slightly tilted as shown in FIG. The pulled out cored bar M falls into the cored bar storage box 74 placed below along the inclination of the pedestal 47. The metal core storage box 74 is configured to be pulled out in the front direction. Note that an opening that coincides with the opening of the cored bar storage box 74 is provided in the base part of the cored bar extraction device 30 (the part that connects the bottoms of the main body frames 31, 31).

  When one metal core M is extracted in this way, the oil pressure of the hydraulic cylinders 38 and 44 is switched to raise the rod, and the rubber crawler W is advanced by one metal core, and then the above-described processing is repeated. Then, the portion from which the core metal M has been extracted is sent out to the downstream conveyor 72 and reaches the cutting device 50 as the processing further proceeds.

  As shown in FIGS. 1 and 6, the cutting device 50 includes a pair of main body frames 51 and 51 whose front side is open, a hydraulic cylinder 53 fixed to the upper part of the main body frames 51 and 51, and the hydraulic cylinder. Inverted V-shaped shearing blades 56 and 56 detachably attached to the tip of a rod 54 of 53 via a flange, and a table portion 57 on which a rubber crawler is placed. Here, the space | interval of the shear blades 56 and 56 is match | combined with the size which cuts a rubber crawler. The table portion 57 has an opening 58 partially facing the rubber crawler, and mounting surfaces 59 and 59 on which the rubber crawler can be mounted before and after the opening 58. Further, edge plates 60 and 60 projecting upward are attached to the mounting surfaces 59 and 59 on the opening 58 side. The edge plates 60, 60 have a role of raising the rubber crawler slightly upward and a role of shearing the rubber crawler in cooperation with the shearing blades 56, 56.

  In the cutting device 50, the rubber crawler after extracting the core metal is cut into a predetermined size by a shearing action. The cut rubber crawler falls into the lower rubber storage box 75. The rubber storage box 75 is also configured to be pulled out in the front direction. Note that an opening that coincides with the opening of the rubber storage box 75 is provided in the base portion of the cutting device 50 (the portion that connects the bottoms of the main body frames 51, 51). In this cutting device 50, the shape of the shear blades 56, 56 is inverted V-shaped, so that the rubber crawler is gradually sheared from the outside. As a result, the rubber crawler does not escape to the outside, and an excessive load is not applied to the hydraulic cylinder 53. Furthermore, by using an inverted V shape, the rubber crawler is sheared with the center in the width direction slightly raised. Further, by simultaneously shearing with the two inverted V-shaped shear blades 56, 56, the rubber crawler can be prevented from escaping in the length direction. With these configurations, the shearing efficiency is improved in the cutting device 50.

  As described above, according to the rubber crawler dismantling apparatus 1 of the present embodiment, the cored bar can be extracted without heating the rubber crawler. In particular, with the cored bar extraction device 30 employed in the present embodiment, a completely new idea of utilizing the lever action by the cradle 47 can almost completely eliminate the remaining of the cored bar. Moreover, in this embodiment, since the height of the mounting surfaces 35L and 35R of the table portion 33 is changed, a force that rotates the shaft can be applied to the cored bar. This makes it easier to remove the core metal.

  In this embodiment, a plurality of cored bar contact members 41 may be provided as shown in FIG. Further, when disassembling a wide rubber crawler, as shown in FIG. 8, it is preferable to provide a tearing blade 49 that cuts the rubber of the rubber crawler vertically. In this case, it is desirable that the cored bar contact member 41 be shorter than the tear blade 49.

  Next, as a second embodiment, a cored bar extraction device that can be replaced with the cored bar extraction device 30 of the first embodiment will be described. As shown in FIG. 9, the cored bar extraction device 80 according to the second embodiment includes a table 83 having an opening 81 and a mounting surface 82, and a pressing wheel configured to rotate within the opening. In the vicinity of the device and the opening 81, a pressing device 85 for pressing the rubber crawler mounted on the mounting surface 82, and a pedestal 86 for receiving the core bar pushed down into the opening 81 by the pressing device from below. And.

  The rotating wheel 84 includes a hooking blade capable of hooking a cored bar around the rotating wheel 84, and is configured to rotate slowly at a low speed by power transmitted from the hydraulic motor via the speed reducer. Two cradle 86 are provided on both sides of the rotating wheel 84 so that either end of the core bar can be received. The pedestal 86 is configured to be movable between a receiving position and a retracted position by a hydraulic cylinder 87.

  The pressing device 85 has a structure in which a pressing claw 88 having a shape capable of pressing the rubber crawler on the front and rear mounting surfaces 82, 82 across the opening 81 is moved up and down by a hydraulic cylinder 89. Two pressing devices 85 are also provided with the rotating wheel 84 interposed therebetween.

  According to the core pulling device 80, the rubber crawler placed on the table portion 83 is pressed by the pressing claws 88, 88 of the pressing devices 85, 85, set to the receiving position, and the rotating wheel. By rotating 84, the metal core is hooked with the hooking blade of the rotating wheel 84 and pressed downward to be extracted. At this time, since the end that has been withdrawn first is received by the cradle 86, the cored bar can be reliably extracted by the same action as in the extraction device 30 of the first embodiment.

  Even when using the cored bar extracting device 80 of the second embodiment, the cored bar can be easily and reliably extracted without heating the rubber crawler as in the first embodiment.

  Although one embodiment as the best mode for carrying out the invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the scope of the invention.

  For example, as shown in FIG. 10, as the table portion of the cored bar extraction device 30, the mounting surfaces 35 </ b> L and 35 </ b> R having the same height may be employed.

It is a front view showing the whole rubber crawler dismantling processing device of a 1st embodiment. The cutting device used for the rubber crawler dismantling processing apparatus of 1st Embodiment is shown, (A) is a right view, (B) is a front view. The core metal extraction apparatus used for the rubber crawler dismantling processing apparatus of 1st Embodiment is shown, (A) is a left view, (B) is a front view. It is a front view of the principal part which shows a mode that a metal core is extracted in 1st Embodiment. It is a front view of the principal part which shows a mode that a metal core is extracted in 1st Embodiment. The cutting device used for the rubber crawler dismantling processing apparatus of 1st Embodiment is shown, (A) is a left view, (B) is a front view. The core metal contact member as another example is shown, (A) is a front view, (B) is a side view. The core metal contact member as another example is shown, (A) is a front view, (B) is a side view. The core metal extracting device as 2nd Embodiment is shown, (A) is a front view, (B) is a right view. It is a front view which shows the whole structure of the rubber crawler dismantling processing apparatus as another example. It is a perspective view of the device of patent documents 1. It is a front view of the apparatus of patent document 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rubber crawler dismantling processing apparatus 10 ... Cutting apparatus 11 ... Main body frame 13 ... Hydraulic cylinder 14 ... Rod 17 ... V-shaped cutting blade 30 ... Core metal extraction apparatus 31 ... Main body frame 33 ... Table part 34 ... Openings 35L, 35R ... Placement surface 36 ... Edge plate 37 ... Pressing device 38 ... Hydraulic cylinder 39 ... Rod 41 ..Core metal abutting member 42 ... Dimple 43 ... Pressing device 44 ... Hydraulic cylinder 45 ... Rod 46 ... Presser claw 47 ... Receiver 48 ... Hydraulic cylinder 49 ..Cleaving blade 50 ... Cutting device 51 ... Main body frame 53 ... Hydraulic cylinder 54 ... Rod 56 ... Reverse V-shaped shear blade 57 ... Table part 58 ... Opening 59 ..Placing surface 60 ... Edge plate 71 ... Overhead crane 72, 73 ... Roller conveyor 74 ... Core metal storage box 80 ... Core metal removal device 81 ... Opening 82 ... Mounting surface 83 ... Table part 84 ... Rotating wheel 85 ... Pressing device 86 ... Stand base 87 ... Hydraulic cylinder 88 ... Pressing claw 89 ... Hydraulic cylinder W ... Rubber crawler M ..Cores

Claims (6)

A cutting step of opening a rubber crawler having a cored bar in a strip shape, a cored bar extracting step of extracting the cored bar from the rubber crawler opened in the banded shape in the cutting step, and the cored bar being extracted by the cored bar extracting step A rubber crawler disassembly processing method comprising a cutting step of cutting a rubber crawler into a predetermined size, and the core metal extraction step is configured as follows.
Place the rubber crawler that opens in a band shape so that the cored bar faces the opening provided in the table part, press the rubber crawler so that it does not move in the length direction, and in this state press the cored bar from above In addition, the moment that acts on the end of the rubber crawler that is left behind by receiving the end of the rubber crawler that has come out first is received. A cutting device for opening a rubber crawler having a metal core inside in a strip shape;
A cored bar extracting device for extracting the cored bar from the rubber crawler opened in a strip shape by the cutting device;
A cutting device for cutting the rubber crawler from which the metal core has been extracted by the metal core extracting device into a predetermined size;
The rubber crawler dismantling apparatus characterized in that the core metal extracting device is configured as follows.
(A) It is provided with a table portion having an opening partly facing a rubber crawler opened in a band shape and a placement surface on which the rubber crawler can be placed before and after the opening.
(B) A pressing device capable of moving from above the placement surface to below the placement surface in a state where the core metal in the rubber crawler is captured in the opening of the table portion is provided.
(C) A pressing device for pressing the rubber crawler placed on the placement surface of the table portion is provided in the vicinity of the opening.
(D) It is provided with a cradle capable of receiving at least the position of an end from the center of the core bar installed in the opening and pushed down by the pressing device.
(E) A cradle moving device is provided that moves the cradle between a receiving position where the metal core is to be received and a retreat position where the metal core is to be dropped downward. The rubber crawler dismantling apparatus according to claim 2, further comprising the following configuration.
(F) The pressing device has a recess capable of capturing the cored bar at the lower end, and is configured by a rod that can stroke from above to below the mounting surface. The rubber crawler dismantling apparatus according to claim 2, further comprising the following configuration.
(G) The pressing device has a hooking blade capable of hooking a metal core around it, and is configured by a rotating wheel that rotates within the opening. The rubber crawler dismantling apparatus according to any one of claims 2 to 4, further comprising the following configuration.
(H) The pressing device also includes a tearing blade for longitudinally tearing the rubber of the rubber crawler. The rubber crawler dismantling apparatus according to any one of claims 2 to 5, further comprising the following configuration.
(I) The cradle moving device is constituted by a hydraulic cylinder that moves the cradle downward from the receiving position to move to the retracted position.