Rock splitting device

Abstract

To provide a rock splitting device capable of easily destroying a target to be destroyed.SOLUTION: A rock splitting device 1000 is of an attachment type capable of being attached to and detached from an arm 3100 of a work vehicle 3000. The rock splitting device 1000 includes a rock splitting machine 10 and a motor 50. The rock splitting machine 10 has a pair of blades 12a and 12b. The motor 50 rotates the rock splitting machine 10 on the arm 3100.SELECTED DRAWING: Figure 2A

Description

Technical Field

[0001] The present invention relates to a rock splitting device.

Background Art

[0002] Conventionally, a rock splitter for splitting a target object such as a rock mass or a concrete structure has been known. Patent Document 1 discloses a rock splitter including a pair of wedge liners, a wedge pushed between the pair of wedge liners, and a drive device that applies a pushing force to the wedge.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Among the target objects, some are more likely to crack when a force is applied in a specific direction. Therefore, it is desirable to apply a force from the rock splitter in a direction in which the target object is easily cracked. In conventional rock splitters, in order to change the direction of the force applied to the target object, it is necessary to turn the work vehicle on which the rock splitter is mounted, which is time-consuming.

[0005] An object of the present invention is to provide a rock splitting device that can easily split a target object.

Means for Solving the Problems

[0006] The present application provides an invention in the following aspects. (Item 1) An attachment-type rock splitting device detachably attached to an arm of a work vehicle, a rock splitter including a pair of blades, a motor that rotates the rock splitter with respect to the arm, A rock cutting device comprising

[0007] (Item 2) Further comprising a swing mechanism for supporting the rock cutter so as to be swingable with respect to the arm The rock cutting device according to Item 1

[0008] (Item 3) Further comprising a buffer mechanism for absorbing the load applied to the rock cutter The rock cutting device according to Item 1

[0009] (Item 4) A first swing mechanism for supporting the rock cutter so as to be swingable with respect to the arm A second swing mechanism for supporting the rock cutter so as to be swingable with respect to the arm A buffer mechanism disposed between the first swing mechanism and the second swing mechanism for absorbing the load applied to the rock cutter The rock cutting device according to Item 1, further comprising

[0010] (Item 5) Further comprising a grease supply device for automatically supplying grease to the rock cutter The rock cutting device according to any one of Items 1 to 4

Advantages of the Invention

[0011] In the rock cutting device of the present invention, the rock cutter can be rotated with respect to the arm by a motor. Thereby, the opening direction of a pair of blades can be easily changed, and thus the direction of applying force to the object to be broken can be easily changed.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2A

Figure 2B

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0013] The rock cutting device 1000 of the present invention will be described with reference to the drawings.

[0014] <1. Structure of the Rock Cutting Device> As shown in FIG. 1, the rock cutting device 1000 of the present invention is a device for destroying a target object 2000 such as a rock mass or a concrete structure. The rock cutting device 1000 is an attachment type that can be detachably attached to the arm 3100 of the work vehicle 3000. The work vehicle 3000 is, for example, a hydraulic excavator.

[0015] Hereinafter, for convenience of explanation, the vertical direction in FIG. 1 will be described as the vertical direction (or longitudinal direction) of the rock cutting device 1000, and the horizontal direction in FIG. 1 will be described as the horizontal direction (or lateral direction) of the rock cutting device 1000. The vertical direction is parallel to the vertical direction. When there are a plurality of identical components, in order to make the drawings easier to view, only some of the plurality of identical components may be labeled.

[0016] As shown in FIGS. 2A and 2B, the rock cutting device 1000 includes a rock cutter 10, a first swing mechanism 20, a buffer mechanism 30, a second swing mechanism 40, a motor 50, a mounting bracket 60, a grease supply device 70, and a control box 80.

[0017] The first swing mechanism 20 is disposed above the rock breaker 10. The buffer mechanism 30 is disposed above the first swing mechanism 20. The second swing mechanism 40 is disposed above the buffer mechanism 30. The motor 50 is attached to the mounting bracket 60. The mounting bracket 60 is disposed above the second swing mechanism 40. The mounting bracket 60 is a member for attaching the rock breaking device 1000 to the work vehicle 3000. The mounting bracket 60 is fixed to the arm 3100. A part of the grease supply device 70 is attached to the mounting bracket 60. The control box 80 is attached to the mounting bracket 60. Hydraulic control equipment is housed in the control box 80. The hydraulic control equipment controls the hydraulic pressure supplied to the rock breaker 10. The hydraulic control equipment includes valves such as a pressure regulating valve, a flow rate regulating valve, and a direction switching valve. The hydraulic pressure to the hydraulic control equipment can be supplied from the work vehicle 3000.

[0018] The rock breaker 10 is a device that applies force to the object to be broken 2000 and breaks the object to be broken 2000 by cutting. The rock breaker 10 is preferably a rock breaker that operates by hydraulic pressure. The hydraulic pressure to the rock breaker 10 can be supplied from the work vehicle 3000 via the hydraulic control equipment. A known rock breaker can be used as the rock breaker 10. Therefore, the structure of the rock breaker 10 will be briefly described.

[0019] The rock breaker 10 includes a casing 11, a pair of blades 12a, 12b, a wedge 13, and a piston rod (not shown). One end of the pair of blades 12a, 12b is inserted into the casing 11. Also, the pair of blades 12a, 12b extends from the casing 11. The wedge 13 is disposed between the pair of blades 12a, 12b. As shown in FIG. 3, the wedge 13 advances downward from between the pair of blades 12a, 12b and moves the pair of blades 12a, 12b away from each other. The piston rod is disposed in the casing 11. The piston rod reciprocates within the casing 11 and advances or retracts the wedge 13. The piston rod operates by, for example, the hydraulic pressure supplied from the work vehicle 3000.

[0020] Next, the operation of the rock breaker 10 will be described. A pair of blades 12a and 12b are inserted into the hole 2000a formed in the object 2000 to be broken. The wedge 13 is pushed by the piston rod, and the wedge 13 is moved until the tip of the wedge 13 extends beyond the tips of the pair of blades 12a and 12b as shown in FIG. 3. As the wedge 13 moves, the pair of blades 12a and 12b are gradually spread apart from each other. Then, by applying a force to the object 2000 to be broken by the spread pair of blades 12a and 12b, a crack is generated in the object 2000 to be broken, and the object 2000 to be broken can be split.

[0021] The first swing mechanism 20 is provided above the rock breaker 10. As shown in FIG. 4, the rock breaker 10 can swing by the first swing mechanism 20 and can take a posture inclined with respect to the vertical direction. Therefore, even when the hole 2000a is inclined, the pair of blades 12a and 12b of the rock breaker 10 can be inserted into the inclined hole 2000a.

[0022] As shown in FIG. 2A, the first swing mechanism 20 includes a seat portion 21 and a shaft member 22. The seat portion 21 is fixed to the first plate 31 of the buffer mechanism 30. The shaft member 22 includes a shaft 221 and a ball 222. The first end portion of the shaft 221 is fixed to the rock breaker 10. The ball 222 is integrated with the second end portion of the shaft 221. The ball 222 is in contact with the seat portion 21. The ball 222 is not fixed to the seat portion 21. The surface of the ball 222 can rotate longitudinally with respect to the seat portion 21 while being in contact with the seat portion 21. Therefore, as shown in FIG. 4, the rock breaker 10 can swing freely and can take a posture inclined with respect to the vertical direction.

[0023] The buffer mechanism 30 absorbs the load applied to the rock breaker 10. As shown in FIG. 2A, the buffer mechanism 30 includes a first plate 31, a second plate 32, a plurality of shafts 33, and a plurality of elastic members 34.

[0024] The first plate 31 includes a circular base 311 and a cylindrical peripheral wall 312 extending from the base 311. The second plate 32 includes a circular base 321 and a cylindrical peripheral wall 322 extending from the base 321. The second plate 32 has a structure obtained by inverting the first plate 31 upside down. The first plate 31 and the second plate 32 are arranged at intervals in the vertical direction. The plurality of shafts 33 are arranged at equal intervals in the circumferential direction of the base 311 and the base 321. The plurality of shafts 33 penetrate the base 311 and the base 321. Fasteners such as bolts are attached to portions of each shaft 33 that extend downward from the base 311 and portions that extend upward from the base 321. Thereby, the shaft 33 is prevented from coming off the first plate 31 and the second plate 32. Each elastic member 34 is, for example, a coil spring. The shaft 33 is inserted inside each elastic member 34.

[0025] The first plate 31 and the second plate 32 are movable in the axial direction of the shaft 33 with respect to the shaft 33. For example, when a pair of blades 12a, 12b of the rock drill 10 contact the object to be broken 2000 and the rock drill 10 is pushed upward, the first plate 31 moves closer to the second plate 32. At this time, the elastic member 34 is compressed by the first plate 31 and the second plate 32. In this way, the elastic member 34 can absorb the load applied to the rock drill 10.

[0026] The second swing mechanism 40 is provided above the buffer mechanism 30. As shown in FIG. 5, the rock drill 10 can swing by the second swing mechanism 40 and can take a posture inclined with respect to the vertical direction. Therefore, even when the hole 2000a is oblique, a pair of blades 12a, 12b of the rock drill 10 can be inserted into the oblique hole 2000a.

[0027] As shown in FIG. 2A, the second swing mechanism 40 includes a seat portion 41 and a shaft member 42. The seat portion 41 is fixed to the second plate 32 of the buffer mechanism 30. The shaft member 42 includes a shaft 421 and a ball 422. The first end portion of the shaft 421 is directly or indirectly coupled to the motor 50. The ball 422 is integrated with the second end portion of the shaft 421. The ball 422 is in contact with the seat portion 41. The seat portion 41 is not fixed to the ball 422. The seat portion 41 is rotatable longitudinally with respect to the ball 422 while being in contact with the surface of the ball 422. Therefore, as shown in FIG. 5, the rock breaker 10 can swing freely and can take a posture inclined with respect to the vertical direction.

[0028] As shown in FIG. 2B, the motor 50 is attached to the mounting bracket 60. The motor 50 rotates the rock breaker 10, the first swing mechanism 20, the buffer mechanism 30, and the second swing mechanism 40 together about their central axes with respect to the arm 3100. The motor 50 is preferably a hydraulic motor. The hydraulic pressure to the hydraulic motor can be supplied from the work vehicle 3000 via a hydraulic control device. The rock breaker 10, the first swing mechanism 20, the buffer mechanism 30, and the second swing mechanism 40 are rotatable 360 degrees. Note that the motor 50 can rotate forward and backward, and thus the rock breaker 10, the first swing mechanism 20, the buffer mechanism 30, and the second swing mechanism 40 can rotate in either the clockwise or counterclockwise direction. In FIG. 1, the rotation directions of the rock breaker 10, the first swing mechanism 20, the buffer mechanism 30, and the second swing mechanism 40 are schematically shown by arrows. By rotating the rock breaker 10 by the motor 50, the opening direction of the pair of blades 12a, 12b can be changed.

[0029] The grease supply device 70 automatically supplies grease to the rock breaker 10. As shown in FIGS. 2A and 2B, the grease supply device 70 includes a tank 71 for storing grease and a tube 72 that connects the tank 71 and the rock breaker 10. The grease supply device 70 can use, for example, a known electric grease gun.

[0030] <2. Effects> In the rock cutting device 1000 of the present invention, the rock cutter 10 can be rotated around the central axis of the rock cutter 10 with respect to the arm 3100. Thereby, the direction in which the pair of blades 12a and 12b open can be changed, and as a result, the direction in which a force is applied to the object 2000 to be broken can be changed. Among the objects 2000 to be broken, there are some that are more likely to crack when a force is applied in a specific direction. For example, it is known that cracks occur in the rock mass only in a specific direction. Therefore, since the rock cutter 10 is rotatable, the direction in which the pair of blades 12a and 12b open can be easily changed so that the object 2000 to be broken can be easily cracked.

[0031] The rock cutter 10 is swingable by the first swing mechanism 20 and / or the second swing mechanism 40. Therefore, when inserting the pair of blades 12a and 12b into the hole 2000a, even if the hole 2000a is somewhat inclined, the rock cutter 10 can tilt so that the pair of blades 12a and 12b can enter along the inclination of the hole 2000a.

[0032] Since the rock cutting device 1000 is provided with the grease supply device 70, grease can be automatically supplied to the rock cutter 10.

[0033] <3. Modification Example> The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. Hereinafter, modification examples of the present invention will be described. The modification examples described below can be applied to the above-described embodiment alone or in appropriate combination without departing from the gist of the present invention.

[0034] In the above, an embodiment in which the rock cutting device 1000 is used for the object 2000 to be broken in which the hole 2000a opens in the vertical direction has been described. However, by moving the arm 3100, the rock cutting device 1000 can also be used when breaking an object 2000 to be broken in which the hole 2000a opens in the horizontal direction, such as when excavating a tunnel or the like.

Explanation of Reference Numerals

[0035] 1000 Rock cutting device 10-split rock cutter 12a blade 12b blade 20 First swing mechanism 30 Buffer mechanism 40 Second swing mechanism 50 Motor 70 Grease supply device 3000 Work vehicle 3100 Arm

Claims

1. An attachment type rock cutting device detachable from the arm of a work vehicle, comprising: a rock cutter having a pair of blades; a motor for rotating the rock cutter with respect to the arm. The rock cutting device comprising the above.

2. The rock cutting device according to claim 1, further comprising a swing mechanism for supporting the rock cutter so as to be swingable with respect to the arm. The rock cutting device according to claim 1.

3. The rock cutting device according to claim 1, further comprising a buffer mechanism for absorbing the load applied to the rock cutter. The rock cutting device according to claim 1.

4. a first swing mechanism for supporting the rock cutter so as to be swingable with respect to the arm; a second swing mechanism for supporting the rock cutter so as to be swingable with respect to the arm; a buffer mechanism disposed between the first swing mechanism and the second swing mechanism for absorbing the load applied to the rock cutter. The rock cutting device according to claim 1, further comprising the above.

5. The rock cutting device according to any one of claims 1 to 4, further comprising a grease supply device for automatically supplying grease to the rock cutter. The rock cutting device according to any one of claims 1 to 4.

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