JPH04155Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotating device for a wedge-type rock splitting machine equipped with an external force absorption device and a centering device.

[Conventional technology]

Conventionally, the attachment of a rock splitting machine to a hydraulic excavator was as follows:
As shown in Figure 6, a wedge-type rock splitter is suspended at the end of the arm with a wire rope, etc., and the rock splitting direction can be selected by manually rotating the entire rock splitter, or as shown in Figure 7, a wedge-type rock splitter is suspended at the end of the arm using a wire rope or the like. The rock splitting machine has a bracket for mounting it on a hydraulic excavator, and is swingably mounted on the tip of the arm.

[Problem that the invention attempts to solve]

The conventional rock splitting machine shown in Figures 6 and 7 has the following features:
There is no rotation mechanism, so the width direction of the liner by the wedge is constant, and it is impossible to select the free surface direction or the direction perpendicular to the joints of the rock, which requires unnecessary rock-splitting force and is very inefficient. There are other problems.

[Means for solving problems]

In a wedge-type rock splitting machine that is equipped with an external force absorption device during rock splitting and a rock splitting machine centering device, a motor support frame that supports a rock splitting machine rotation motor is rotatably attached to the outer periphery of a wedge extrusion hydraulic cylinder of the rock splitting machine, The gear attached to the outer periphery of the wedge extrusion cylinder and the pinion gear attached to the shaft end of the rock splitter rotation motor are engaged, and the lever that receives the reaction force when the hydraulic motor rotates is swingably attached to the rock splitter mounting bracket. The reaction force generated on the reaction force receiving lever is received by the centering device of the rock splitter.

[Effect]

When the motor for rotating the rock splitter is driven, the roller, which is pivotally supported on the motor support frame, rotates idly until it comes into contact with the reaction force receiving lever, and after hitting the reaction force receiving lever, the motor support frame, and therefore the rock splitting machine, rotates. Then, the wedge of the rock splitter rotates to the desired angle.

〔Example〕

1 to 5, a rock splitter mounting bracket 2 is attached to the tip of the front 1a of the shovel body 1.
is mounted so that it can tilt.

The rock splitter 3 is supported by the bracket 2 via a bearing 4, and supports the wedge 3a so as to be movable up and down.

A wedge extrusion cylinder 5 is installed on the top of the rock splitting machine 3.
is attached, and a motor support frame 7 equipped with a hydraulic motor 6 for rotating the rock splitter is rotatably fitted into the groove 5a on the outer periphery of the wedge extrusion cylinder 5.

A gear 8 is fixed to the lower side of the cylinder 5.
A pinion gear 9 is attached to the shaft end of the hydraulic motor 6 so as to mesh with the pinion gear 9. The motor support frame 7 is provided with a shaft 10 having a roller 11 at its tip at two locations on the circumference, and a reaction force receiving lever 12 is swingably attached to the bracket 2. Sector gear portion 13a and sector gear portion 1 that mesh with each other
Two pairs of centering gears 13 consisting of a lever portion 13b extending horizontally from 3a are pivotally supported by the bracket 2 at positions that sandwich the rock splitter 3.

A shaft 14 is installed on the upper surface of the lever portion 13b, and a roller 14a is pivotally supported at the upper end of the shaft 14. The roller 11 and the roller 14a are arranged with the reaction force receiving lever 12 sandwiched therebetween. FIG. 2 shows the centering state of the rock splitting machine 3, in which the rod part rack 15a of the cylinder 15 arranged on the same plane in the bracket 2 engages with the sector gear part 13a via the intermediate gear 16, and the cylinder 15, the lever portion 13b swings. A roller 17 provided at the end of the lever portion 13b presses the outer periphery of the rock splitter 3 to center it.

Therefore, when trying to rotate the rock splitting machine, first center the rock splitting machine using the centering devices 13 to 17.
The roller 14 provided on the gear 13 is automatically fixed at a position where the reaction force receiving lever 12 receives the reaction force due to the rotation of the motor 6.

FIG. 3 shows the state of the rock-splitting machine rotation motor 6 when it starts operating. Pinion gear 9 of motor 6
When rotated in the direction, the motor 6 and pinion gear 9 rotate on the tooth surface of the gear 8 fixed to the cylinder 5 because the rotational resistance of the rock splitting machine 3 integrated with the hydraulic cylinder 5 for wedge extrusion is large. in the direction of
Roller 11 attached to motor support frame 7
rotates until it touches the reaction force receiving lever 12. FIG. 4 shows a state in which the roller 11 is in contact with the reaction force receiving lever 12. From this position, since the rotational reaction force of the motor 6 is supported by the reaction force receiving lever 12, the cylinder 6 integrated with the rock splitting machine 3 is shown. rotates in the 〓 direction.

In this way, the angular position of the wedge 3a projecting downward from the rock splitter 3 can be set arbitrarily.

[Effect of idea]

In order to perform rock splitting work efficiently with optimal crushing force,
It is now possible to freely set the direction in which the liner is widened by wedges, such as in the free surface direction for rock masses with free surfaces, or in the direction perpendicular to the joints for rock masses with joints.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a part of the rotation mechanism of the wedge-type rock splitting machine of the present invention in cross section, and FIG. 2 is a sectional view taken along the line AA in FIG. Figures 3 and 4 are B-B of Figure 1.
In the arrow views, FIG. 3 shows a state in which the motor support frame is rotating, and FIG. 4 shows a state in which the rock splitter is rotating. Figure 5 shows an overall view of the wedge-type rock splitter attached to the shovel. FIGS. 6 and 7 are overall views showing conventional devices, respectively. 2... Rock splitting machine mounting bracket, 3... Rock splitting machine, 5... Cylinder for wedge extrusion, 6... Rock splitting machine rotation motor, 7... Motor support frame, 11, 14a... Roller, 12... Reaction force Reception lever, 13... Centering gear.

Claims (1)

[Scope of utility model registration request] The main body of the rock splitting machine is rotatably supported via a self-aligning bearing on a bracket attached to an operating arm of a hydraulic shovel, etc., and a motor support frame rotatably supported on the outer periphery of the main body of the rock splitting machine, and the motor support. a rock-splitting machine rotation motor attached to a frame; a pair of gears each provided on the output shaft of the motor and the rock-splitting machine body and meshing with each other;
A reaction force receiving means provided on the bracket that can come into contact with a protrusion provided on the motor support frame in the rotational direction of the motor support frame, and a rock splitting machine centering means provided on the bracket. A wedge-type rock splitting machine that is characterized by