JP2000288412A - Rock crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rock crusher wherein a hard rock which is a material to be crushed is crimped to crush it and wherein the rock of a large diameter is crushed to pieces of suitable sizes relatively well matched to make possible the mass production thereof. SOLUTION: This crusher has, as components, a fitting mechanism part A provided on the base machine side by a self-traveling vehicle, a crusher body B fitted to the head of the fitting mechanism part A and supporting a rock 22 which is a material to be crushed from the rear side, a stroke unit C fitted with a breaker 29 arranged oppositely to the crusher body B, and a drive control part D for the crusher body B and the stroke unit C. By the cooperation of a bit at the head of a piston rod fitted to the breaker 29 of the stroke unit C with the crusher body B, the rook 22 is crimped, and it is crushed while adding vibration by the stroke.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushing device for holding and crushing hard rocks to be crushed, which is mounted as a front attachment to a base machine such as a shovel excavator. This is a rock crushing device used for crushing large-sized rocks obtained by quarrying, excavation, or the like into appropriate sizes having relatively uniform particle diameters and producing a large amount of them.

[0002]

2. Description of the Related Art This type of rock has been crushed by a mason using a rag and a hammer for a long time. There is also a method of crushing rocks, and also using a method of filling expanded rock with an expandable cement admixture for crushed rock, but there is a disadvantage that these crushing means can not be produced in large quantities because the work efficiency is not good .

[0003] Means for randomly crushing rocks by manually operating a breaker, which is a kind of rock drilling machine powered by compressed fluid, is also employed. However, since the rocks are crushed in an irregular particle size, The subsequent sorting operation requires a lot of labor, and the quarry amount must be increased unnecessarily, resulting in a poor yield.

Further, it is conceivable to use a crusher equipped with a hitting device used as a crushing device for concrete structures and the like.
500 kg / cm ² ) is concrete (150-250)
(Kg / cm ² ), the hardness is much higher than that of Kg / cm ² ), so that sufficient crushing cannot be obtained and its use is difficult.

[0005] For example, as in a crusher equipped with a hitting device disclosed in Japanese Patent Application Laid-Open No. 10-259670, one of a pair of opposing crushing teeth is on the crusher main body side and the other is on the movable arm body side. With a configuration in which the object to be crushed sandwiched between the crushing teeth that are mounted and opened and closed is hit with a hydraulic breaker from the back of the crushing teeth on the movable arm side, even if it is enough for crushing concrete, Crushing is difficult, especially when crushing large diameter rocks.

[0006]

Therefore, according to the present invention, a large-sized rock obtained by quarrying, excavation or the like is crushed into an appropriate size having a relatively uniform particle size, and a large amount of the crushed rock is produced. It is an object of the present invention to provide a rock crushing device which is facilitated.

[0007]

A rock crushing apparatus according to the present invention comprises a mounting mechanism provided on a base machine side of a self-propelled traveling vehicle, and an object to be crushed mounted on a tip of the mounting mechanism. The main components of a crusher main body that supports the rock from the rear side, a hitting unit equipped with a breaker provided in opposition to the crusher main body, and a drive control unit for the crusher main body and the hitting unit age,
The bit at the tip of the piston rod mounted on the breaker of the hitting unit and the crusher body cooperate to hold the rock and crush it while applying vibration to the rock by hitting. (Claim 1)

In the rock crushing apparatus according to the first aspect, the crusher body and the hitting unit cooperate to hold the rock, and in particular, vibrate the rock by hitting the rock by the bit of the breaker provided on the hitting unit side. The rock is crushed while drilling, so that hard rock can be easily and efficiently crushed, and the crushed rock has an appropriate size with a relatively uniform particle size. It is easily crushed and can be easily produced in large quantities.

In the rock crushing apparatus according to claim 1, the impact unit is swingably connected to the crusher main body via a parallel link, and the crusher main body has a plurality of supports for supporting the rock from the back side. In addition to protruding points, an opening / closing cylinder for driving the parallel link to hold the rock between the support point and the bit of the striking unit is built in. (Claim 2)

[0010] In the rock crushing apparatus according to the second aspect of the present invention, the rock held between the support point on the crusher main body side and the bit on the impact unit side is drilled while the rock is stably supported by the plurality of support points. And crushing by vibration can be reliably performed.

[0011] In the rock crushing apparatus according to claim 2, the driving unit is configured so that the hitting unit starts the breaker when a clamping pressure on the rock by the opening / closing cylinder becomes a predetermined pressure or more. . (Claim 3)

In the rock crushing apparatus according to the third aspect, the breaker is automatically started for the rock sandwiched between the support point on the crusher main body side and the bit on the hitting unit side, and the rock is crushed by the carbide bit. Since the piercing is performed and the crushing force due to the vibration is transmitted, the operation is easy.

[0013] The rock crushing apparatus according to any one of claims 1 to 3,
The bit was formed by a rod-shaped bit fixed to the tip of the piston rod, and the rod-shaped bit had a tapered tip formed of a carbide material at a tapered tip. (Claim 4)

In the rock crushing apparatus according to the fourth aspect, the cutting edge of the rod-shaped bit applies vibration by impact to the rock with the aid of the breaker, and can easily crush hard rock while drilling. In the case of a rock having a very small diameter, it can be crushed only by the pointed tip of the rod bit.

The rock crushing apparatus according to any one of claims 1 to 3,
The bit was formed of a disk-shaped bit pivotally attached to the tip of the piston rod, and the disk-shaped bit formed a cutting blade made of a cemented carbide material on the tapered outer periphery. (Claim 5)

In the rock crushing apparatus according to the fifth aspect, the cutting edge of the disc-shaped bit comes into linear contact with the rock, and the cutting edge cuts while rotating the cutting surface of the rock with the help of the breaker. Since it can be crushed, it can be easily crushed even in the case of a large-sized rock, and if necessary, after drilling with the pointed edge of the rod-shaped bit, cutting with the cutting blade of this disk-shaped bit is performed. More effective.

According to a fifth aspect of the present invention, in the rock crushing apparatus, the disc-shaped bit is detachably pivotally attached to a tip of the piston rod. (Claim 6)

In the rock crushing apparatus according to the sixth aspect, a disk-shaped bit with a cutting blade having a different number of teeth and a different shape is prepared in advance, and the most appropriate disk-shaped bit with a cutting blade is selected according to the properties of the rock. In this way, the crushing can be performed effectively, and only the disc-shaped bit can be replaced when it is damaged or worn.

In the rock crushing device according to claim 5 or 6, the breaker is rotated and adjusted about an axis by a rotation driving means to position the breaker, and the cutting direction of the disk-shaped bit by the cutting blade is changed as desired. . (Claim 7)

In the rock crushing apparatus according to the seventh aspect, the cutting direction of the disc-shaped bit by the cutting blade can be selected by adapting to the direction of the eye in which crushing is easy depending on the rock.
Effective crushing can be performed.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rock crushing apparatus according to the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings. FIG. 1 is a side view of a main part of the crushing apparatus.
2 shows an exploded perspective view of a main part of the crusher, FIG. 3 shows a control circuit diagram of the crusher, FIG. 4 shows an exploded perspective view of a mounted state of a disc-shaped bit according to another embodiment, and FIG. 5 shows a perspective view of a rotary drive means for positioning the breaker in conformity with the disc-shaped bit of FIG.

The crushing device 1 is provided with a self-propelled vehicle (not shown) such as a shovel excavator as a base machine, and can be exchanged directly or via a detachable coupler as shown in the illustrated embodiment. And a crusher for mounting from the rear side a rocking mechanism A to be attached to the front attachment mounted on the base machine side and a rock 22 to be crushed, which is mounted on the tip of the mounting mechanism A. A main body B, a striking unit C which cooperates with the crushing machine main body B to hold the rock 22 and crush while piercing by applying vibration due to the striking, and a drive control unit D of these as main components. .

The mounting mechanism A includes an arm 2 having an upper end attached to the end of the boom of the base machine, an attitude control cylinder 3 having one end pivotally connected to the upper end of the arm 2 and a rod 4 extending and retracting, A first link lever 5 which is installed between the lower end of the rod 4 and above the lower end of the arm 2 and has both ends pivotally connected thereto, and a second link lever 6 which has one end pivotally connected to the lower end of the rod 4. Is provided.

The crusher body B is provided with a frame 11 reinforced by connecting right and left side plates 7 and 8 at appropriate positions on the outer surface and inner surface with connecting plates 9 and 10, respectively.
8 are provided at the lower end of the arm 2 and the lower end of the second link lever 6 at pivot holes 2a, 6a.
When the rod 4 of the attitude control cylinder 3 is expanded and contracted to form a parallel link,
The entire frame 11 is raised and lowered to control the posture of the crusher body B and the impact unit C.

A detachable coupler (for example, proposed by the applicant of the present invention and disclosed in Japanese Utility Model Application Laid-Open No.
No. 9), the crusher main body B is mounted via the mounting holes 2a, 6a.
The crusher body B can be easily and quickly attached and detached with one touch by using a single base machine, so that the crusher body B can be replaced with a bucket or other front attachment using one base machine. Useful when using.

The frame 11 is provided with pivot shafts 14, 15, 16 provided between the left and right side plates 7, 8;
4, a base end portion 17a of an opening / closing cylinder 17 is pivotally connected, and third link levers 18 are connected to pivot shafts 15, 16, respectively.
And one end of a fourth link lever 19 are pivotally connected to one end of the third link lever 18, respectively.
a is pivoted.

The connecting plate 10 provided on the inner side of the frame 11
, A plurality of support points 21 are attached with their tips protruding, and the support points 21 support the rock 22 that is the object to be crushed from the back side, but in the illustrated embodiment, In order to stabilize the sitting of the rock 22, the support points 21 are arranged in a triangular point at one place on the upper side and two places on the lower side, and the tip is made strong and the hemisphere is made so as not to cause unnecessary damage to the rock 22. A rigid sphere or the like protruding in a shape is used.

The striking unit C comprises left and right side plates 23, 2
Frame 2 reinforced by connecting the appropriate places 4 with connecting plates 25
6 and pivot shafts 27 and 28 provided between left and right side plates 23 and 24, and pivot lever holes 18a and 19 provided at the other end portions of link levers 18 and 19 projecting downward from the frame 11.
When the rod 20 of the opening / closing cylinder 17 is extended and retracted to form a parallel link, the entire frame 26 swings around the pivot shafts 15 and 16 and the crusher body B The rock 22 can be held in between.

A known breaker 29 for applying a striking force via a bit at the tip by reciprocating a piston rod by fluid pressure is mounted on the frame 26. The bit in FIGS. The tip side is tapered, and the tip of the tip 30 is made of conical cemented carbide.
a is formed by a rod-shaped bit 30 to which a
When the breaker 29 is activated, the rock 22 pierced by the sharp end of the rod bit 30 vibrated at a high speed can be easily crushed while piercing.

The drive control unit D is connected to a hydraulic source circuit 31 on the base machine side via pipes 32, 33, and 34, and is a retractable pipe 3 for driving the opening / closing cylinder 17.
Relief valves 35 and 36 for keeping the oil pressure constant are attached to the pipe 2 on the extension side and the pipe 33 on the extension side.
Is connected to a check valve 37 in which a pilot port is connected to the contraction side pipe 32.

The breaker 29 has an opening / closing cylinder 17
From the middle of the pipe 33 on the extension side of the
The pipe 39 on the inflow side connected via the pipe 8 and the pipe 34 on the outflow side connected to the tank on the hydraulic power supply circuit 31 side are connected.

In the drive control section D, the opening / closing cylinder 1
When the hydraulic pressure is supplied to the one chamber via the pipe 33 on the extension side and the oil is drained from the other chamber via the pipe 32 on the retraction side, the rock 22 between the support point 21 and the rod-shaped bit 30 is supplied. Is held, and when the pressure of the pipe 33 on the extension side exceeds the set pressure of the sequence valve 38, the sequence valve 38
Breaker 2 using the hydraulic pressure supplied through the
9 is started, and the rock 22 is drilled and crushed by the rod bit 30.

The crushing by the rod-shaped bit 30 is extremely effective when the rock is relatively small in diameter, and the sharp tip 30a works extremely effectively. In some embodiments, a disc-shaped bit 40 or a disc-shaped bit 41 as shown in FIG.

The disc-shaped bits 40 and 41 are provided with through holes 4 in the axis.
Cutting blades 46, 4 of any tooth shape made of a super hard material are provided on the outer periphery of disk-shaped substrates 44, 45 provided with 2, 43.
7 is fixed by sintering or the like, and these cutting blades 46 and 47 are tapered in a radial direction with a thinner tip end.

The disc-shaped bits 40 and 41 are connected to the breaker 2
9 is fitted into a notch groove 49 provided at the tip of a piston rod 48 attached to the piston rod 9, and a pivot shaft member 51 is inserted through one of locking holes 50, 50 formed in a manner orthogonal to the notch groove 49. After the pivot shaft member 51 is inserted through the other of the through holes 42 and 43 and the locking hole 50, the pivot shaft member 51
Of the piston rod 48 is detachably locked and held with respect to the piston rod 48, thereby being pivotally attached to the distal end of the piston rod 48.

In the illustrated embodiment, a split shaft in which a locking portion 51c provided at the tip of a pivot shaft 51b connected to a head portion 51a is made expandable and contractable by a split groove 51d is used as the pivot shaft member 51. , This connecting structure is a disc-shaped bit 40, 4
1 is rotatably supported, and the disc-shaped bit 4
Any structure can be used as long as it can be detachably pivoted so that 0 and 41 can be exchanged, and a structure using screwing, pinning or other known connecting means can be adopted.

The piston rod 48 is removably attached to the breaker 29 so that it can be replaced. A notch groove 52 for locking is provided in the middle of the shaft, and the piston rod 48 is bored in the housing of the breaker 29. As shown in FIG. 5, a retaining pin 53 is inserted into the notch groove 52 from the through hole to be locked and held.
Is also used when mounting on the breaker 29.

When the disc-shaped bits 40 and 41 are used, effective crushing can be performed by selecting the cutting direction by the cutting blades 46 and 47 by adjusting to the direction of the eyes where different crushing is easy depending on the rock. Therefore, the breaker 29 is rotated and adjusted about the axis by a rotation driving means as shown in FIG.
It is desirable to change the cutting direction by the cutting blades 46 and 47 as desired.

The rotation driving means is provided with a driven gear 54 on one end of the breaker 29 and a slidable flange 55 on the other end of the breaker 29. The driven gear 54 is driven by a motor 56 to rotate. By engaging the teeth and supporting the flange 55 with a bearing member (not shown) provided in the frame 26 of the striking unit C, the rotation angle of the breaker 29 in the frame 26 can be changed. The orientation of the cutting blades 46, 47 of the disc-shaped bits 40, 41 with respect to 22 can be set as desired.

Accordingly, from among the disc-shaped bits having various tooth profiles prepared in advance, those that match the properties and size of the rock to be crushed are selected and mounted on the breaker 29, and the cutting blades 46, When the breaker 29 is started in a state where the direction of 47 is positioned to the eye of the rock which is easy to cut, the disc-shaped bits 40, 41 vibrated at high speed.
The cutting blades 46 and 47 make linear contact with the rock 22 and receive a rotational force when they are pressed against each other with the help of the breaker 29.

As a result, the cutting blades 46 and 47 cut and crush the rock 22 while rotating the cutting surface, so that the rock can be easily crushed even in the case of a large-diameter rock. After the drilling of the bit 30 by the cutting edge 30a, the cutting can be performed by the cutting blades 46, 47 instead of the disc-shaped bits 40, 41, and more effective crushing of the rock 22 can be expected. .

[Brief description of the drawings]

FIG. 1 is a main part side view showing a rock crushing apparatus to which the present invention is applied.

FIG. 2 is an exploded perspective view of the rock crushing apparatus of FIG.

FIG. 3 is a control circuit diagram in the rock crushing apparatus of FIG.

FIG. 4 is an exploded perspective view showing a mounted state of a disc-shaped bit according to another embodiment.

FIG. 5 is a perspective view of a rotary drive unit that positions a breaker in conformity with the disc-shaped bit in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher 2 Arm 3 Cylinder for attitude control 4,20 Rod 5,6,18,19 Link lever 7,8,23,24 Side plate 9,10,25 Connecting plate 11,26 Frame 12,13,14,15 , 16, 27, 28 Pivot shaft 17 Opening / closing cylinder 21 Support point 22 Rock (crushed object) 29 Breaker 30 Bar bit 31 Hydraulic power supply circuit 32, 33, 34, 39 Piping 35, 36 Relief valve 37 Check valve 38 Sequence valve 40, 41 Disc-shaped bit 42, 43 Through hole 44, 45 Substrate 46, 47 Cutting blade 48 Piston rod 49 Notch groove 50 Lock hole 51 Pivot shaft member 52 Notch groove 53 Retaining pin 54 Follower gear 55 Flange 56 Motor 57 Drive gear

Claims (7)

[Claims] 1. A mounting mechanism provided on a base machine side of a self-propelled traveling vehicle, a crusher main body mounted on a tip of the mounting mechanism and supporting rocks to be crushed from the rear side, A striking unit equipped with a breaker arranged opposite to the crusher main body, and a drive control unit for the crusher main body and the striking unit as main constituent elements, and a piston rod mounted on the breaker of the striking unit. A rock crushing apparatus characterized in that a tip bit and the crusher main body cooperate with each other to hold the rock and crush the rock while applying vibration to the rock by impact. 2. The hitting unit is swingably connected to the crusher main body via a parallel link, and the crusher main body has a plurality of support points projecting from the back side for supporting rocks, The rock crushing device according to claim 1, further comprising an opening / closing cylinder for driving the parallel link to hold the rock between a support point and a bit of the hitting unit. 3. The rock control device according to claim 2, wherein the driving unit is configured to start the breaker when a clamping pressure on the rock by the opening / closing cylinder exceeds a predetermined pressure. Crushing equipment. 4. The bit is formed of a rod-like bit fixed to the tip of the piston rod, and the rod-like bit has a tapered tip formed with a conical tip made of a cemented carbide material. A rock crushing apparatus according to any one of the above. 5. The bit is formed of a disc-shaped bit pivotally attached to a tip of the piston rod, and the disc-shaped bit is formed with a cutting blade made of a cemented carbide material on a tapered outer peripheral portion. 3. The rock crushing apparatus according to any one of claims 1 to 3. 6. The rock crushing apparatus according to claim 5, wherein the disc-shaped bit is detachably pivotally attached to a tip of the piston rod. 7. The rock according to claim 5, wherein the breaker is rotated and adjusted about an axis by a rotation driving means to position the breaker, and a cutting direction of the disc-shaped bit by a cutting blade is desirably changed. Crushing equipment.