JP3470144B2 - Rock crushing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bedrock crushing apparatus which can be suitably used for split rock treatment in civil engineering, mines, quarrying and the like.

[0002]

2. Description of the Related Art A split rock for crushing the rock mass by inserting a wedge bar into a pre-drilled hole in the rock mass or a crack existing in the rock mass and hydraulically expanding the wedge bar in the direction perpendicular to the axis. Machine is being developed. This type of rock breaking machine is suitable for a non-explosive crushing method that does not cause blasting, and since it does not generate noise or vibration and does not generate scattered objects, it has been widely used in recent years.

[0003]

In order to efficiently crush the bedrock using this type of rock breaking machine, it is necessary to match the extension direction (pressing direction) of the wedge rod with the direction in which the rock bed is easily broken. Was used by suspending the rock breaking machine around its central axis by suspending it with a wire or chain on the arm of a hydraulic excavator. However, the method of suspending a rock breaking machine with a wire or a chain has an unstable posture and easily rocks, which poses a safety problem and a wedge bar must be inserted into a pilot hole with a small diameter. Was difficult.

On the other hand, in tunnel construction, a method of mounting a split rocker on a dedicated stand is used, but this kind of stand has a problem in mobility, and crushing work can be performed efficiently at the work site. Was not suitable for. Therefore, the present invention is
An object of the present invention is to provide a bedrock crushing device capable of easily moving and changing the direction of a rock breaking machine.

[0005]

In order to solve the above problems, the present invention employs the following configurations. That is, a bedrock crushing device according to the present invention is a rock breaking machine that inserts a wedge bar into a prepared hole preliminarily drilled in the bedrock, expands the wedge bar hydraulically to crush the bedrock, and a supporting device that supports the rock breaking machine. And a plurality of rollers parallel to the axial center of the outer peripheral portion of the rock breaking machine are provided at predetermined intervals along the circumferential direction, and the supporting device includes a suspending tool for hanging the rock breaking machine. It is characterized in that a receiving member that rotatably supports the side surface of the rock breaking machine and a gear that engages with the roller of the rock breaking machine and forcibly rotates the rock breaking machine around an axis are provided.

If the suspending device for suspending the rock breaking machine is rotatable about its axis, the breaking direction of the rock breaking machine can be easily adjusted. Further, the supporting device is provided with a concave receiver with a roller that comes into contact with the outer periphery of the rock breaking machine to rotatably support the rock breaking machine, and the structure is such that the rock breaking machine is supported by this receiving tool. preferable.

This support device may be manufactured by attaching a dedicated traveling device to the hydraulic excavator equipped with the traveling device. It is economical to configure the support device to move and rotate with a cylinder.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a specific description will be given based on an embodiment of the present invention shown in the drawings.

This bedrock crushing device 1 comprises a supporting device 2 and a rock breaking device 3, and is attached to the tip of an arm 7 from which a bucket of a hydraulic excavator 5 is removed, using shafts 8 and 9 for attaching a bucket. . The hydraulic excavator 5 is equipped with a crawler type traveling device 10, and is capable of rotating a boom 11 which is rotatable in a horizontal plane.
The arm 7 is attached to the. Reference numeral 13 is a hydraulic cylinder for raising and lowering the boom, 14 is a hydraulic cylinder for rotating the arm, and 15 is a hydraulic cylinder for rotating the support device 2.

In the rock breaking machine 3, a pair of wedge bars (wedge liners) 13, 13 are attached to the tip of a cylindrical main body 11. The interval portion 14 between the pair of wedge bars 13, 13 has a taper shape in which the tip side becomes thinner, and a pressing wedge (wedge) 15 is inserted in this interval portion. The pressing wedge 15 is moved back and forth by a hydraulic cylinder 12 provided inside the rock breaking machine body 11, and when the pressing wedge 15 advances, the wedge rod 1
The space of 3, 13 is widened strongly. The rocks are crushed by this expansion pressure.

A base plate 18 having a hook member 17 is fixed to a lid member 16 provided at the rear end of the rock breaking machine body 11 with bolts. A hose H for supplying pressure oil is used for the lid member 16.
Is provided, and the hydraulic cylinder 12 in the main body is expanded and contracted by the pressure oil supplied from here. Reference numeral 20 is a pipe for supplying oil for retracting the pressing wedge to the front side of the cylinder.

A guide roller device 25 having a pair of front and rear rings 22, 23 and a plurality of rollers 24, ... FIG. 4 shows the mounting method, and the front and rear rings 22, 2 integrally provided in the outer peripheral portion of the main body in a flange shape in advance.
The cylindrical rollers 24, ... Are arranged so as to be sandwiched between the rings at the positions of the through holes 27 for insertion provided in 3, and the bolts 30 ,. The washer and nut are attached and fixed. Therefore, the roller 24 is rotatably supported by the bolt 30.

On the other hand, as shown in FIGS. 5 to 9, the supporting device 2 is composed of a substantially ladder-shaped supporting frame 40 and a connecting frame 41 fixed to the rear portion of the frame 40. The support frame 40 is provided with horizontal frames 43, ... at appropriate intervals, and a pair of front and rear receiving members 4 for supporting the rock breaking machine.
5, 45 are fixed. The receiving member 45 is provided with front and rear frame plates 47, 47 having a concave curved cutout portion 46, and rollers 50, ... Interposed between the frame plates. Similar to the guide roller, each roller 50 is composed of a cylindrical roller body and a bolt 51 inserted through the cylindrical roller body.

The support frame 40 has a gear 55 which engages with the guide roller device 25 of the rock breaking machine 3 and the gear 55.
A hydraulic motor 56 for rotating the motor is attached.
Further, the connecting frame 41 of the supporting device 2 is provided with bearing cylinders 57 and 58 for supporting the shafts 8 and 9 supporting the supporting device, and a hanger 60 is attached to the rear end by a bearing device 61. It is attached so that it can rotate around its axis. The suspending tool 60 is composed of a wire rope 63, and a hook member (shackle) 64 connected to the hook member 17 of the rock breaking machine 3 by a pin is attached to the tip end thereof.

A stopper roller 67, which comes into contact with the rear end of the rock breaking machine 3 and regulates the backward movement of the rock breaking machine 3, is provided near the position of the tip of the hanging tool 60 of the supporting device 2. The stopper roller 67 is rotatably supported by a support plate 69 protruding from a bracket 68 fixed to the connecting frame 41 with a bolt.

The support device 2 is attached to the tip of the arm 7 of the hydraulic excavator 5 by the shafts 8 and 9.
The shaft 9 is attached to a link 7a which is rotated by a hydraulic cylinder 15, and the support device 2 is rotated in the directions of arrows A and B in FIG. 1 by expansion and contraction of the hydraulic cylinder. On the other hand, in the state of FIG. 1 in which the rear end of the rock breaking machine 3 is hung by the hanger 60, and in the state of FIG. 1 in which the rock breaking machine 3 is hung downward, the weight of the rock breaking machine 3 is exclusively supported by the hanger 60. The receivers 45, 45 of the support device 2 contact the side surface of the suspended rock breaking device 3, and the gear 55 is engaged with the guide roller device 25 of the rock breaking device 3. In this state, the rocking of the rock breaking machine to the hydraulic excavator side and the rocking in the left-right direction are caused by the supporting device 2
Regulated by 5.

When the wedge bar is to be crushed by inserting the wedge bar into the downward hole drilled downward, the rock crusher 1 is lowered by operating the hydraulic excavator from the state shown in FIG. 1, and the wedge bar at the tip is lowered. Insert in hole H. At this time, since the rock breaking machine 3 is supported by the supporting device 2, the posture thereof is stable, and the rock breaking machine 3 can be inserted into the prepared hole safely and efficiently. As for the crushing direction, the hydraulic motor 56 of the supporting device 2 may be driven to rotate the rock breaking machine around the axis, and the extension direction of the wedge rod may be directed to a desired direction. At this time, since the hook of the hanger 60 is attached via the bearing device 61, the rotation about the axis is smoothly performed.

When the wedge rod 13 is inserted into the prepared hole and the direction thereof is aligned with the crushing direction, the hydraulic cylinder 15 is extended to separate the receiver of the supporting device 2 from the rock breaking machine 3 (arrow A), and the rock breaking machine is moved. It is swingably supported only by the hanging tool 60. This is because a large lateral force acts on the rock breaking machine during rock crushing, so if the rock breaking machine is restrained by a supporting device, it is difficult to crush and the rock breaking machine and supporting device are damaged by external force. This is to prevent Insert the wedge bar 13 deep enough into the pilot hole (which may also utilize cracks in the bedrock),
When the rock breaking machine 3 is swingably supported, the hydraulic cylinder 12 of the rock breaking machine itself is operated to move the pressing wedge 15 forward to widen the interval between the pair of wedge rods 13 and destroy the rock mass. . This makes it possible to perform crushing work with low noise and vibration. When the bedrock is crushed, the crushing device 1 is lifted upward, the wedge rod is pulled out, and the crushing device 1 is moved to the next crushing position.

FIG. 11 shows a wedge rod 1 in a prepared hole H which is formed by drilling sideways.
An example of inserting 3 and crushing is shown. In this case, first, the wedge rod 13 is inserted into the prepared hole H with the supporting device 2 oriented laterally and the rock breaking device 3 placed thereon. When the wedge rod 13 is inserted deep enough, the supporting device 2 is rotated downward as shown in FIG. 11 to be separated from the rock breaking machine 3, and the rock breaking is performed without restraining the rock breaking machine. Even if the support device 2 is separated from the rock breaking machine, the suspending tool 60 remains connected to the rock breaking machine, and therefore, even if the rock breaking machine 3 deviates from the prepared hole for some reason, it does not drop.

When the horizontal split rock is completed, the support device 2 is rotated upward again to support the lower surface (outer peripheral surface) of the split rock machine by the receiving members 45, 45, and the wedge rock 13 is retracted together with the split rock machine.
Is pulled out of the bedrock. In this case, the rock breaking machine 3 is supported by the supporting device 2.
The posture is stable because it is placed on. Further, even if it slides down from the supporting device 2 for some reason, since the hanger 60 is connected, there is no possibility that it will fall to the ground.

When the device 1 is moved, the rock breaking device 3 can be supported and moved by the supporting device 2, so that the device can be moved in a more stable state than the conventional method of suspending the rock breaking device with a wire or a chain. it can. Therefore, safety while traveling is high.

When the wedge bar 13 is to be inserted into the prepared hole having a wide range of angles from the horizontal direction to the vertical direction, only the tip of the wedge bar is put into the prepared hole, the supporting device is removed and the wire is pulled by a wire. Or, it can be inserted using the weight of the rock breaking machine, so it is easy to insert. In particular, in the case of a sideways prepared hole, the wedge rod 13 can be easily adjusted to the direction of the prepared hole by adjusting the angle of the supporting device, so that the split rock work can be performed in one man.

[0023]

As is apparent from the above description, the bedrock crushing apparatus according to the present invention supports the rock breaking machine main body in a stable state and increases the degree of freedom of the rock breaking machine when the rock breaking machine is separated from the rock breaking machine. As a result, it becomes possible to crush the bedrock efficiently and safely. In addition, since the rock breaking machine can be stably supported and moved by the supporting device during the movement, it is safe.

[Brief description of drawings]

FIG. 1 is a side view illustrating an embodiment of the present invention.

FIG. 2 is a side view of a rock breaking machine.

FIG. 3 is an explanatory diagram of an internal structure of a rock breaking machine.

FIG. 4 is a perspective view showing a method for assembling the rock breaking machine.

FIG. 5 is a perspective view showing a method of assembling the support device.

FIG. 6 is a plan view of a rock crushing device.

FIG. 7 is a side view of the bedrock crushing device.

FIG. 8 is a view taken along the line YY in FIG.

FIG. 9 is a view taken along the line ZZ in FIG.

FIG. 10 is a rear view of the rock breaking machine.

FIG. 11 is an explanatory diagram of a lateral crushing method.

[Explanation of symbols]

1 Rock crushing device 2 Support device 3 split rock machine 5 hydraulic excavator 7 arms 10 traveling devices 12 hydraulic cylinder 13 Wedge bar (Wedge liner) 15 Press wedge (wedge) 25 Guide roller device 45 receiver 56 hydraulic motor 60 suspenders

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E21B 7/02 E21C 37/02

Claims (4)

(57) [Claims] 1. A split rock machine that inserts a wedge rod into a prepared hole preliminarily drilled in a rock bed and expands the wedge rod by hydraulic pressure to crush the rock bed, and a support device that supports the split rock machine. A plurality of rollers parallel to the axis of the machine are provided at predetermined intervals along the circumferential direction of the machine, and the supporting device includes a suspending tool for suspending the rock breaking machine and a side surface of the rock breaking machine. A bedrock crushing device comprising: a rotatably supported receiver; and a gear that engages with the roller of the rockbreaker to forcefully rotate the rockbreaker around an axis. 2. The bedrock crushing device according to claim 1, wherein the suspending tool is provided so as to be rotatable around an axis. 3. The receiving member according to claim 1 or 2, wherein the receiving member is formed in a concave shape, and a guide roller is provided in the concave portion so as to come into contact with an outer peripheral portion of the rock breaking machine to rotatably support the rock breaking machine. Bedrock crushing device. 4. The bedrock crushing device according to claim 1, wherein the supporting device is rotatably attached to the tip of the arm of the hydraulic excavator.