JPH058063B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a direct traction type stone crusher that can be used primarily in the field of agricultural machinery.

(Conventional technology) Conventionally, in fields and agricultural land, large stone blocks not only hinder the growth and growth of agricultural crops, but also
They were excluded from causing wear and tear to the working machinery.

However, stones act as soil temperature regulators, absorbing solar heat during the day and gradually dissipating it at night, and they also contain various minerals.
Because it has a positive effect on soil and crops,
There is a trend towards actively using the system rather than excluding it. For this reason, a machine (stone crusher) for crushing large blocks of stone into moderately sized stone gravel has been developed and put into practical use.

An example of this type of stone crusher is one that crushes stones while being pulled by a towing vehicle such as a tractor. It has a crushing part with a structure in which a rake c is attached, and the stone block d is repeatedly struck with a hammer and crushed until it becomes large enough to pass through the rake.

(Problems to be Solved by the Invention) According to the above-mentioned conventional stone crusher, it is convenient because stone gravel of approximately constant size can be obtained by adjusting the claw spacing of rake c, but on the other hand, Crushing cannot be performed efficiently unless a strong force is applied to hammer a, so a large power source is required for this purpose, and the rake c is easily damaged because the stone blocks are repeatedly hit with the hammer to crush the rake c.
Furthermore, since the rake C is subjected to strong contact resistance during towing, the rake wears out quickly and the towing vehicle is also burdened. The present invention was developed with the aim of technically solving these difficulties, and is capable of crushing stones with high efficiency without requiring large amounts of power, minimizing damage and wear of the crushing part, and having low traction resistance. This is an attempt to provide a stone crusher that is designed to

(Means for Solving the Problems) In order to solve the above problems, the present invention includes a rotating shaft attached to a base body, and pick-up claws arranged radially in parallel on the rotating shaft at regular intervals. , intersecting with the rotation of the pick-up claws, and fixed to the base body at positions slightly forward of the rotating shaft with respect to the forward direction of the base body while maintaining the interval through which each pick-up claw passes. A rotating shaft having a stopper claw and a disc arranged side by side is attached to the base body at a position forward of the stopper claw with respect to the forward direction of the base body, and is eccentric with respect to the rotating shaft, and the distal end head is attached to the disc. The gist of the stone crusher is a stone crusher equipped with a stone crusher rotatably supported between disks so as to protrude outward from the stone crusher.

The rotating shaft of the disc is located at a proper position in front of the rotating shaft of the pick-up claw relative to the forward direction of the base, and the rotating direction of the rotating shaft of the disc is in the forward direction relative to the forward moving direction of the base. The rotation directions of the rotation axes of the pick-up claws are set in opposite directions, and the front edge of the pick-up claw relative to the rotation direction and the front edge of the stop-up claw relative to the forward direction of the base body are curved in a convex shape to reduce contact resistance. The present invention is characterized by the fact that the base body is formed with at least two fracture portions formed by impact with a rotary hammer inside the base body via a back plate.

(Example) Hereinafter, the present invention will be specifically explained with reference to the illustrated example. Reference numeral 10 denotes a base body composed of a side plate 11 and a back plate 12, and inside thereof a quarrying mechanism section 20 and a crushing mechanism section 30 are provided. It has a coupling mechanism section 40 to the towing vehicle at the external front end, a power transmission mechanism section 50 almost at the center, and a level adjustment mechanism section 6 at the rear.
0 is provided for each.

The quarrying mechanism section 20 includes the side plate 11 of the base body 10.
It has a rotating shaft 21 whose both ends are supported by bearings, and on this rotating shaft, pick-up claws 22 are arranged radially in parallel at regular intervals, as shown in FIG.
The front edge 22a of each pick-up claw in the rotating direction is curved into a convex shape. 23 is a stopper claw, and the mounting plate 24 is attached as shown in Fig. 4.
They are arranged side by side in a comb-like manner and are fixed to the back plate 12 of the base body 10 via this mounting plate. The front end edge 23a of the stopper claw 23 is curved in a convex shape with respect to the forward direction of the base body, and the tip of the stopper claw is connected to the rotating shaft 2.
1, and as the rotating shaft 21 rotates, the pick up claw 22 intersects with the stop pull claw 23, and the pick up claw 23 crosses the stop pull claw 23.
It is now possible to pass between 25 is a receiving plate for crushing stones attached to the front edge of the mounting plate 24.

The crushing mechanism section 30 is located in front of the quarrying mechanism section 20, and has a rotating shaft 31 whose both ends are supported by the side plate 11 of the base body 10. As shown in FIG. A large number of discs 33 are arranged side by side at regular intervals via connecting rods 32. 34 is a stone crushing hammer, which is rotatably attached between the disks 33 via a support shaft 35;
At this time, the support shaft 35 is made eccentric with respect to the rotation shaft 31, and when the hammer 34 is rotated, its tip head 3
4a protrudes to the outside of the disc 33. One hammer 34 is installed between each disc, but the installation positions are sequentially shifted by 120 degrees with respect to the rotation axis 31 of the disc 33, that is, they are arranged in a spiral shape along the rotation axis 31. It's meant to be.

The connecting mechanism section 40 includes a gate-shaped frame 41, and brackets 42 and 43 are attached to the center of the upper part and the lower part of both legs, respectively, so that it can be connected to the towing vehicle with a pin or the like.

The power transmission mechanism section 50 has an input shaft 51 for power, and although not shown, is connected to the output shaft of the towing vehicle via a propeller shaft, and receives power from the towing vehicle. . The input shaft 51 is engaged with an internal transmission, and the power from the towing vehicle is appropriately adjusted and transmitted to the shaft 52. Power is transmitted from the shaft 52 to the rotating shaft 31 of the crushing mechanism section 30 via the power transmission device 53, and power is also transmitted to the rotating shaft 21 of the quarrying mechanism section 20 via the clutch device 54. is transmitted. However, as shown in FIG. 1, the rotating direction of the rotating shaft 31 is in the forward direction P with respect to the direction A in which the base body 10 is towed and advances, whereas the rotating direction of the rotating shaft 21 is in the opposite direction Q. ing.

The level adjustment mechanism section 60 includes a length-adjustable turnbuckle 61, one end of which is connected to the bracket 6.
2 to the base body 10, and the other end is pivotally connected to a bracket 64 attached to a U-shaped shaft 63, and gauge wheels 65 are rotatably mounted on both ends of the shaft 63, respectively. The height of the gauge wheel 65 can be adjusted by adjusting the length of the turnbuckle 61. That is, when the handle 61a of the turnbuckle 61 is turned to shorten it,
The gauge wheel 65 goes up, while when the turnbuckle is lengthened, the gauge wheel 65 goes down,
This allows the level of the base 10 to be adjusted.

(Function) The stone crusher according to the present invention is constructed as described above, and is used by being connected to a tow vehicle 70 such as a tractor as shown in FIG. As described above, the power from the towing vehicle 70 is transferred to the power transmission mechanism section 50.
When this is transmitted, the rotating shaft 21 of the stone quarrying mechanism 20 rotates clockwise as shown in FIG. 1, and the pick-up claw 22 picks up the stone block 8.

The picked-up stone blocks 80 are strongly hit by the stoppaklaw 23, and easily crushed stone blocks are crushed into small pieces, and the stone gravel 81 is then hit by the stoppaklaw 23.
It passes through 3 spaces and is ejected and falls backwards. The stone blocks that have not been crushed at this stage are hit against the receiving plate 25 by the centrifugal force of the pick-up claw 22 and the guiding action of the cross-movement of the pick-up claw 22 and stop claw 23. At this time, the rotating shaft 31 of the crushing mechanism section 30 is rotating at high speed counterclockwise as shown in FIG. 1, and due to this rotational force, the eccentric hammer 34 is also
The stone block received by the receiving plate 25 is crushed by the hammer 34 and ejected in the tangential direction by centrifugal force.

In this way, the released stones 82 fly forward while drawing a substantially circular arc with the back plate 12 serving as a guide. In the bottleneck 12a near the top of the back plate 12, large stones are further crushed by a rotating hammer and fall forward.

Therefore, in the case of the present invention, primary crushing is performed by the pick-up claw 22 hitting the stone block against the pick-up claw 23, and secondary (full-fledged) crushing is performed by the rotary hammer 34 on the receiving plate 25.
3 with the tertiary crushing finally performed by the rotary hammer 34 in the bottleneck 12a of the back plate 12.
A step-by-step crushing process is performed, and the stone crushing work is carried out efficiently and effectively, and stone gravel of uniform size and predetermined size is obtained.

The hammer 34 has a structure that can be attached and detached by removing a bolt 36 and a nut 37, which are fasteners, as shown in FIG. 5, so that the hammer can be easily replaced. Furthermore, if the attachment of the stopper claw 23 to the mounting plate 24 and the attachment of the pick-up claw 22 to the rotating shaft 21 are made removable, both can be replaced. Furthermore, the receiving plate 25 can be easily replaced by removing the bolts 26 and nuts 27 that serve as fasteners.

(Effects of the Invention) As explained in detail above, according to the stone crusher according to the present invention, the stone crushing hammer is configured to rotate around the spindle as the rotary shaft rotates at high speed. Large crushing force can be obtained with less power than conventional fixed hammers. In addition, the crushing work is not done in one place, but in three crushing areas, as mentioned above, and in stages, which prevents damage to the crushing parts (especially the rake) as in the past. It can be prevented. Further, according to the present invention, the front edges of the pick-up claw and the stop-up claw are both curved in a convex shape, so that the contact resistance during quarrying and traveling (pulling) can be weakened, and wear and tear can be prevented as much as possible. It has excellent effects such as reducing the burden on the towing vehicle.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing the structure of a stone crusher according to the present invention, FIG. 2 is an external view thereof, FIG. 3 is a schematic perspective view showing the installation state of a pick-up claw, and FIG. , FIG. 5 is a schematic perspective view showing the installed state of the stopper claw and the receiving plate, FIG. 5 is a schematic perspective view showing the installed state of the hammer, and FIG.
A perspective view showing how the stone crusher is used;
FIG. 7 is an explanatory diagram of a conventional example. DESCRIPTION OF SYMBOLS 10... Base body, 11... Side plate, 12... Back plate, 20... Quarry mechanism section, 21... Rotating shaft, 22... Pick up claw, 23... Stop pull claw, 24... Mounting plate, 25... Receiving plate, 3
0... Crushing mechanism section, 31... Rotating shaft, 33... Disc, 34... Hammer, 35... Support shaft, 40...
Connection mechanism section, 41... Frame, 50... Power transmission mechanism section, 51... Input shaft, 60...
... Level adjustment mechanism section, 65 ... Gauge wheel,
70...Tow truck, 80...Rock block.

Claims (1)

[Scope of Claims] 1. A rotating shaft is attached to the base, and pick-up claws are arranged radially in parallel on the rotating shaft at regular intervals, and as the pick-up claws rotate, they intersect and each pick-up claw A comb tooth-shaped stopper claw is fixed to the base body at a position slightly forward of the rotating shaft with respect to the forward direction of the base body while maintaining an interval through which the claws pass, and a rotating shaft with disks arranged side by side is attached to the base body. A shaft is attached to the base body at a position forward of the stopper claw in the forward direction, and is eccentric to the rotating shaft, and is rotatably mounted between the discs so that the tip head protrudes outside the disc. A stone crusher characterized by being equipped with a supported stone crushing hammer. 2. The rotating shaft on which the discs are arranged side by side is located at a proper position forward of the rotating shaft on which the pick-up claws are arranged in parallel with respect to the forward direction of the base body, and the rotation direction of the rotating shaft on which the discs are arranged side by side is The stone crusher according to claim 1, wherein the rotation direction of the pick-up claw is in the forward direction with respect to the forward direction of the pick-up claw, and the rotation direction of the rotating shaft of the pick-up claw is in the opposite direction. 3. The pick-up claw according to claim 1, wherein the front end edge in the rotation direction is curved in a convex shape, and the tip portion is located close to the rotation shaft on which the pick-up claws are arranged in parallel. Stone Crusher. 4. The stopper claw has a front edge curved in a convex shape with respect to the forward direction of the base body, and a tip end thereof is located close to a rotating shaft on which the pick-up claws are arranged in parallel. Stone crusher as described in section. 5. The stone crusher according to claim 1, wherein at least two stone crushing sections are provided by the hammer via a back plate attached to the inside of the base body.