JPH0849428A - Hydraulic breaker equipped with hydraulic cutter - Google Patents

Abstract

PURPOSE:To increase the efficiency for the work of dismantling a reinforced concrete construction and the like. CONSTITUTION:This hydraulic breaker 4 is secured integrally to the channeled portion of the front of a mounting bracket for a shovel machine, and a hydraulic cutter 6 is provided on the side face of the upper portion of the mounting bracket in such a way that its mounting height can be adjusted vertically. To dismantle a reinforced concrete construction or the like, the concrete part is crushed by the downwardly projecting hydraulic breaker 4, while the part of the reinforcement is cut by the upwardly projecting hydraulic cutter 6 for increased efficiency. Preferably, centralized control for the hydraulic operation of the hydraulic breaker 4 and of the hydraulic cutter 6 is made possible at the driver's seat of the shovel machine, and switching between the operation of the hydraulic breaker and that of the hydraulic cutter is made possible for increased efficiency of operations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic breaker with a hydraulic cutter attached to a shovel machine and used for dismantling a reinforced concrete structure or the like.

[0002]

2. Description of the Related Art A hydraulic breaker is attached to a shovel machine and is used for breaking crushed stone into small pieces, dismantling a concrete structure, and breaking road pavements for pipe construction and subway construction. In the hydraulic breaker, a hydraulic cylinder is internally provided in the center of the machine body, and a striking piston moves up and down by hydraulic pressure in the hydraulic cylinder, and a chisel is vertically inserted into the lower part of the hydraulic cylinder. When the striking piston descends, it hits the chisel, and the chisel hits and crushes the concrete structure of the object.

[0003]

Conventionally, the dismantling of a concrete structure is crushed by a hydraulic breaker although it is difficult due to the thickness of the concrete, but in the case of a reinforced concrete structure, the crushing of the concrete part is crushed. Due to the additional work such as manual gas fusing that was required for the rupture treatment of the rebar exposed by the above, the crushing by the hydraulic breaker had to be promoted while adding the rupture treatment of the rebar midway. The conventional dismantling work of a reinforced concrete structure has a problem that the work efficiency is deteriorated because the work of breaking the reinforcing bar by the manual labor is added.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hydraulic breaker with a hydraulic cutter, in which a hydraulic cutter is attached to the hydraulic breaker to form an integrated structure, for the purpose of solving the above problems. , The hydraulic breaker is attached to the mounting bracket that can be attached to the links and arms of the shovel machine by projecting the chisel downward, while the cutting blade is projected above the mounting bracket. A hydraulic cutter is attached, and switching operation between the hydraulic breaker and the hydraulic cutter can be centrally operated from the driver's seat.When dismantling a reinforced concrete structure, the hydraulic breaker promotes crushing of the concrete part, If your face appears, tilt the mounting bracket forward, cut it with a hydraulic cutter, and raise the bracket again to remove the hydraulic pressure. In which a hydraulic breaker and hydraulic cutter so as to crush the concrete portions appropriately by switching operation to enable dismantling the breaker. That is, the present invention is a hydraulic breaker with a hydraulic cutter, in which a hydraulic cutter is attached to the hydraulic breaker so as to be vertically opposed. Further, it is preferable that the hydraulic cutter is mounted on the upper side surface of the mounting bracket so that the mounting height can be adjusted up and down. Further, when switching between the hydraulic breaker and the hydraulic cutter, it is necessary to horizontally tilt the mounting bracket or raise it vertically. This operation is performed by operating the links and arms of the shovel machine. Further, since the switching operation between the hydraulic breaker and the hydraulic cutter is intensively operated in the driver's seat, the vibration of the hydraulic breaker is cut off from the severe vibration, and the trouble of the driving circuit is prevented.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is a hydraulic breaker with a hydraulic cutter suitable for dismantling reinforced concrete. FIG. 1 is a side view of a hydraulic breaker with a hydraulic cutter according to an embodiment of the present invention,
2 is a cross-sectional view of the main part of the hydraulic breaker in FIG. 1, FIG. 3 is a plan view of FIG. 1, FIG. 4 is a cross-sectional view of the main part of the cutting blade of the hydraulic cutter, and FIG. 5 is a description of the hydraulic operation control circuit. It is a figure. In the figure, 1 is a hydraulic breaker with a hydraulic cutter of this embodiment, 2 is a mounting bracket, 4 is a hydraulic breaker, 4d is a chisel, 6 is a hydraulic cutter, 9c is an upper blade, 10a is a lower blade, and 11 is a cutting blade portion. is there. The mounting bracket 2 of the hydraulic breaker 1 with a hydraulic cutter (reinforced concrete) according to the present invention has two parallel side plates 2a each having a central portion 1 as shown in FIG.
The connecting plate 2b is connected to form an H shape, and the chisel 4d is projected downward in the front groove portion 3 of the H shape so that the rectangular hydraulic breaker 4 is integrally fixed by the mounting bolts 5. A hydraulic cutter 6 is attached to the upper side surface of the bracket 2 so as to face the hydraulic breaker 4 in the vertical direction, the cutting blade portion 11 thereof is projected upward, and the mounting height is adjustable in the vertical direction. Reference numeral 7 denotes a machine base of the hydraulic cutter 6, and the machine base 7 is integrally provided with components such as a cutting blade portion 11 and a hydraulic cylinder 8. 7b is machine base 7
Is a long hole for mounting the side plate 2a, and 7c is a mounting bolt. Further, the rear upper part of the two side plates 2a is formed in a triangular shape, and mounting pin holes 2c, 2c for the link L and the arm M of the shovel machine are formed at two upper and lower positions thereof, and the mounting and insertion is performed. The mounting bracket 2 is attached to the shovel machine via the pins 2d, 2d, and the mounting bracket 2 is moved forward and up by operating the link and the arm M of the shovel machine. Support the operation.

A double-acting hydraulic cylinder 4b is provided at the center of a vertically long prismatic machine body 4a of a hydraulic breaker 4 fixed to the front groove portion 3. In addition, on either side of the striking piston 4c in the hydraulic cylinder 4b, 4
Hydraulic pressure is applied through the A port or the 4B port, and the piston 4c moves up and down. Further, a chisel 4d held by a holding pin 4e is inserted in a lower portion of the hydraulic cylinder 4b so as to be able to move up and down.
The lower rod 4f hits the chisel 4d at the time of descending, and the chisel 4d hits and crushes an object such as a concrete structure. Further, above the hydraulic cylinder 4b of the machine body 4a, an accumulator 4g using high-pressure nitrogen gas is provided.
Is provided, the upper rod 4h of the piston 4c projects into the accumulator 4g, and serves as a shock absorber when the piston 4c rises, thereby smoothly moving the piston 4c up and down.

A cylinder holder 7a is provided on the lower part of the machine base 7 of the hydraulic cutter 6 so as to rotatably support the holding portion 8a of the operating hydraulic cylinder 8. The hydraulic cylinder 8 is a double-acting type, and its 8A port or 8B
Hydraulic pressure is applied through the port, and the working piston 8b protruding upward is moved up and down. Also, the working piston 8b
The tip of is rotatably connected to a moving pivot 9a provided on the triangular upper blade holder 9 of the cutter 6. Further, the upper blade holder 9 is provided with a stationary pivot fulcrum 9b at a position opposite to the triangle, and an upper blade 9c is attached along the oblique side thereof. 9d is a mounting bolt for the upper blade 9c. On the other hand, a lower blade base 10 is integrally formed on the machine base 7 of the cutter 6 in a shape projecting upward, and the lower blade 10a extends along the vertical direction of the lower blade base 10 as shown in FIG. It is attached so as to be able to mesh with the upper blade 9c of the holder 9. 10b
Is a mounting bolt for the lower blade 10a. A stationary pivot fulcrum 9b of the upper blade holder 9 is rotatably pivotally attached to a pivotal support portion 10c protruding from the base of the lower blade base 10. Thus, when the working piston 8b rises, the upper blade holder 9 which was in the open state as shown in FIG. 1 swings around the pivotal support portion 10c, and the upper blade 9c closes and bites into the lower blade 10a as shown in FIG. , Cut objects such as rebar. The position of the cutting blade portion 11 of the cutter 6 can be adjusted to a height suitable for the cutting work.

An embodiment of the hydraulic operation control circuit for the hydraulic breaker 4 and the hydraulic cutter 6 of this machine is shown in FIG. 5. According to the present invention, the hydraulic breaker 4 and the hydraulic cutter 6 are installed in the driver's seat of a shovel machine and the machine is operated at the driver's seat. Centralized control is possible. In the figure, 12 is an open center type 4-port 3-position electromagnetic switching valve. Reference numeral 13 is a ball valve for opening and closing, which is ON / OFF controlled by an electric motor type or a wire type and can be switched to the cutter 6 or the breaker 4 for operation. By operating the switching valve 12 and the ball valve 13, the pressure oil is pumped to the pump P.
From the hydraulic breaker 4 to the 4A port or the hydraulic cutter 6 to the 8A port. When sent to the 4A port, the chisel 4d starts operating, and when sent to the 8A port, the upper blade 9
C operates and disconnects. Further, instead of the switching operation by the switching valve 12 and the ball valve 13 described above, the breaker 4 and the cutter 6 are each controlled by a 4-port 2-position switching valve, and
A conventional switching operation for alternately switching the individual switching valves may be performed.

It is also possible to construct the hydraulic breaker with a hydraulic cutter of the present invention by simply performing additional processing on the bracket of a conventional single hydraulic breaker and attaching the cutter 6 thereto. Needless to say, is also included in the scope of the present invention.

[0010]

Since the hydraulic breaker with the hydraulic cutter of the present invention has the above-mentioned structure, in the dismantling work of a reinforced concrete structure or the like, the cutting of the rebar and the like is mechanized, and the work of breaking the rebar and the like by hand as in the prior art is performed. There is no need to add it in the middle, and it will be extremely large as it contributes to the efficiency of dismantling work. In particular, in the hydraulic breaker with the hydraulic cutter of the present invention, the chisel and the cutting blade portion thereof are provided so as to project vertically above and below the mounting bracket, so that when one is in motion, the presence of the other does not interfere at all. And there is no fear of impairing work efficiency. Also, since the mounting bracket can be easily tilted and raised by the shovel machine, it is possible to perform dismantling work that is immediately adaptable to the site. Also, because the hydraulic operation control circuit is installed in the driver's seat of the excavator machine, it can be cut off from the severe vibration of the hydraulic breaker, preventing problems in the operating circuit and centralized control in the driver's seat, improving disassembly work efficiency. Can be made. When simply dismantling the concrete structure, the conventional dismantling work can be performed by operating only the hydraulic breaker. Further, the conventional hydraulic breaker can be modified into the hydraulic breaker with the hydraulic cutter of the present invention by slightly modifying the hydraulic breaker, that is, by simply adding the hydraulic cutter to the upper side, and the function thereof can be remarkably expanded.

[Brief description of drawings]

FIG. 1 is a side view of a hydraulic breaker with a hydraulic cutter according to an embodiment of the present invention.

FIG. 2 is a side view showing a cross section of a main part of the hydraulic breaker in FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a sectional view of a main part of a cutting blade portion.

FIG. 5 is an explanatory diagram of a hydraulic operation control circuit.

[Explanation of symbols]

1 hydraulic breaker with hydraulic cutter 2 mounting bracket 2a side plate 2b connecting plate 3 front groove part 4 hydraulic breaker 4a machine body 4c striking pistol 4d chisel 4g accumulator 5 mounting bolt 6 hydraulic cutter 7 machine base 7a cylinder holder 7b mounting long hole 7c Bolt 8 Hydraulic cylinder 8a Holding part 8b Operating piston 9 Upper blade holder 9a Moving pivot fulcrum 9b Fixed pivot fulcrum 9c Upper blade 10 Lower blade base 10a Lower blade 11 Cutting blade 12 Open center system 4 port 3 position switching valve 13 Opening / closing ball Valve T Oil tank P Pump 4A, 4B Breaker port 8A, 8B Cutter port L, M Excavator machine link and arm

Claims (3)

[Claims] 1. A mounting bracket attachable to a link and an arm of a shovel machine, a hydraulic breaker having a chisel protruding below the mounting bracket, and a cutting blade portion protruding above the mounting bracket. A hydraulic breaker with a hydraulic cutter, characterized in that it comprises a hydraulic cutter. 2. The hydraulic breaker with a hydraulic cutter according to claim 1, wherein a hydraulic cutter is attached to an upper side surface of the mounting bracket. 3. The hydraulic breaker with a hydraulic cutter according to claim 1, wherein the switching operation between the hydraulic breaker and the hydraulic cutter can be centrally operated in a driver's seat.