JPH0472921B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a joint cutting machine in which a vibrating joint cutting device used in the construction of concrete dams, etc. is attached to a lifting machine of a self-propelled vehicle. .

[Problems to be solved by conventional technology and invention]

Conventional joint cutting machines include those in which a joint cutting plate is attached to a hydraulic breaker, and those in which the joint cutting plate is attached to the guide frame of a bulldozer so that it can be moved up and down with a hydraulic cylinder (Jitsukai Sho
53-100724) is known.

However, the former has (1) very loud noise during joint cutting; (2) The joint cutting board holder is severely damaged and maintenance and repair costs are high. (3) If the work is not done immediately after bull rolling, it will not cut smoothly. (4) Joint cutting efficiency is low. There are some drawbacks. In addition, in the latter case, the joint cutting plate is directly attached to the bulldozer, making it difficult to make small corrections to the joint cutting position, resulting in poor workability, and it is difficult to add other functions due to the structure. In addition, since it could only be used exclusively, it had the disadvantage of low operating rates and being uneconomical.

In addition to the above-mentioned joint cutter, a guide tube that can be tilted at any angle by a hydraulic cylinder is installed at the tip of a telescoping boom installed on a self-propelled vehicle, and the guide tube is raised and lowered and swung by the hydraulic cylinder installed in the guide tube. A joint cutting machine with a vibrator and a joint cutting plate attached via a spring to a bracket rotated by a motor
54-16028) has also been developed, but like the latter, the self-propelled vehicle and telescoping boom are made specifically for the joint cutter, so it lacks versatility and cannot be used for other purposes. It was hot.

[Structure of the invention]

The present invention is a partitioning machine in which a partitioning device 9 is attached to a raising/lowering boom 11 and an arm 13 provided on a turning base 4 installed in a self-propelled vehicle 1, and a vertically moving cylinder 15 is replaceable on the arm 13. attachment,
A connecting member 2 is attached to the lower end of the vertically moving cylinder 15.
2 and the saddle-shaped frame 21, and the connecting member 22 is attached to the bracket 28.
The saddle-shaped frame 2 is equipped with a pressing shaft 29 installed horizontally in the saddle frame 2
1, a vibrator 24 is attached via a rotating member 34 and a vibration isolator 23, and a partition plate 25 is attached to the vibrator 24.
It is characterized by being attached with.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

1 to 4, reference numeral 1 is a self-propelled vehicle, in which a swing base 4 is placed on a vehicle body 3 running on an endless track 2 via a swing mechanism 5 so as to be able to swing left and right. There is. A lifting machine 6, a hydraulic unit 7, and a driver's seat 8 are provided on the swing base 4. The lifting machine 6 is used to raise and lower a joint cutting device 9, which will be described later. An arm 13 is provided to be rotatable up and down by a pin 12, and a mounting pin 14, 1 is attached to this arm 13.
A protective outer case 16 is attached to the protective outer case 16 and has a vertically moving cylinder 15 for moving the joint cutting device therein, and a protective inner case 17 is loosely fitted to the protective outer case 16, and The boom 11 is raised up and down about the pivot 10, and the arm 13 is raised and lowered by the second hydraulic cylinder 19.
The joint cutting device 9 is rotated vertically about the shaft pin 12, and the joint cutting device 9 is rotated by the vertical moving cylinder 15.
It is constructed so that it can be moved vertically.

The joint cutting device 9 includes a saddle-shaped frame 21, a coupling member 22 attached thereon, a vibrator 24 attached within the frame of the saddle-shaped frame 21 via a vibration isolator 23, and this vibrator. 24 is provided with a joint cutting plate 25 made of a steel plate. The connecting member 22 is for attaching the joint cutting device 9 to the vertically moving cylinder 15, and includes a bracket 28 attached by pins 26 and 27, and
The lower plate 3 of the bracket 28
1 is loosely fitted into a notch 32 and is attached to a fixed plate 35. The pressing direction changing mechanism includes a pressure receiving metal fitting 33 which is loosely fitted into a notch 32 and attached to a fixed plate 35.

Further, the saddle-shaped frame 21 includes an upper end plate 36 and a pair of left and right side plates 37 fixed to the lower surface of the upper end plate 36. The saddle-shaped frame 21 is mounted by inserting the mounting shaft 38 fixed to the fixed plate 35 through a hole drilled in the center of the upper end plate 36 and into a hole of the rotating member 34 fixed to the upper end plate 36. The shaft 38 is attached to the fixing plate 35 by screwing a nut 39 onto the male thread at the lower end thereof, and can be turned left and right about the mounting shaft 38 by about 180 degrees by a remote control device 40. Note that the remote control device 40 described above has a pinion 51 meshed with a rotating member 34 formed as a gear.
and a hydraulic motor 5 that rotates this pinion 51.
2, the pinion 51 is rotated by the hydraulic motor 52, and the turning member 34 can be turned to a desired angle. It is also possible to use other structures, such as a hydraulic cylinder that rotates the rotating member 34 via a crank, or a hydraulic cylinder that moves a rack and rotates the rotating member (gear) 34 meshed with it. You can also do it.

The vibrator 24 vibrates the joint cutting plate 25, and is provided with a pair of left and right rotating shafts (not shown) each having an eccentric weight in the casing 41, and the pair of rotating shafts are driven by a hydraulic motor 42. The vibrations are generated by interlocking with each other and rotating them in different directions. This vibrator 24 is
A pair of left and right support plates 43 fixed to both ends of the casing 41 are connected to the side plates 37, 37 of the saddle-shaped frame 21.
It is inserted with a sufficient gap between them, and is supported via a vibration isolator 23 fitted in the gap. The vibration isolator 23 shown in the figure has metal end plates 45 fixed by baking or other means to both ends of a short cylindrical shock absorber 44 made of rubber or a material with the same effect.Three on each side, six in total. A metal end plate 45 is fixed to the side plate 37 and the support plate 43 with bolts. A lower plate 46 is fixed to the lower end of the support plate 43 by welding or the like, and a holding plate 48 with a joint cutting plate 25 attached to a mounting bracket 47 on the lower surface is detachably attached with bolts 49.

In FIG. 4, 50 is a joint plate whose lower edge _50a is bent upward.

Next, the operation of the joint cutting device and the joint cutting machine configured as described above will be explained.

FIG. 1 shows a cylinder 1 that moves the coupling member 22 up and down.
5 with pins 26 and 27, and connect it to the tip of joint cutting plate 2.
5 is suspended vertically on concrete C before hardening, and the hydraulic motor 42 of the vibrator 24 is connected to the hydraulic unit 7 of the self-propelled vehicle 1 through a flexible pipe (not shown). To cut the joint from this state, attach the joint plate 50 to the joint cutting plate 25, send the hydraulic oil to the hydraulic motor 42, and move the vibrator 24.
The vertical movement cylinder 15 is extended while operating. As a result, the joint plate 50 is strongly pushed into the concrete C together with the joint cutting plate 25 as shown in FIG. At this time, since the joint cutting plate 25 is vibrated by the vibrator 24, it is pushed into the concrete C smoothly. The pressure-receiving metal fitting 33 supporting the saddle-shaped frame 21 is in a free state with respect to the bracket 28 only by receiving the pressure of the pressing shaft 29 on its pressure-receiving surface 30, and there is no space between the saddle-shaped frame 21 and the vibrator 24. Since the vibration isolating device 23 is provided, the vibration of the vibrator 24 is prevented from being transmitted to the vertically movable cylinder 15, and is efficiently transmitted to the joint cutting plate 25. Furthermore, since the pressing shaft 29 is configured to press the arcuate pressure receiving surface 30 of the pressure receiving fitting 33, the joint cutting plate 25 is pushed vertically into the concrete C even if the arm 13 is slightly inclined. It turns out.

After pushing the joint plate 50 together with the joint cutting plate 25 into the concrete C as described above, the vertical movement cylinder 15 is shortened to leave the joint plate 50 in the concrete C and pull out the joint cutting plate 25 upward. . At this time, since the joint cutting board 25 always rises in the vertical direction, just before the joint cutting board 25 is pulled out from the concrete C, the lower corner of the outer peripheral side of the arc movement flips up the surface layer of the concrete C and raises the surface of the concrete C. No disturbance.

When cutting a joint at a position parallel to the running center line of the self-propelled vehicle 1, as shown in Fig. 5,
While the lifting machine 6 is turned together with the turning base 4 relative to the vehicle body 3, a remote control device 40 is operated to turn the saddle frame 21 and place the joint cutting plate 25 at a desired position. When moving the joint cutting board 25 to a position other than the above, the procedure described above is also carried out. When moving the joint cutting board 25 largely in the width direction or in other directions, the self-propelled vehicle 1 runs; however, when moving the joint cutting board 25 slightly in the width direction, the raising boom 11 and the arm 13 are moved up and down. You can also rotate it to reach your goal.

However, although the joint cutter of the present invention is basically as shown in the above explanation and drawings, the shapes and structures of each member and device are not limited to these, as well as self-propelled vehicles and lifting machines. .

〔Effect of the invention〕

As explained above, the joint cutting machine of the present invention cuts joints in concrete by simply attaching it to the lifting machine's lifting boom with a pin, etc. It can be used as a joint cutter. In addition, since a lifting machine with a hydraulic cylinder that raises and lowers the boom up and down can be used, noise generation can be suppressed as much as possible, and the joint cutting device can always be maintained in the vertical direction. ,
In cooperation with the vibration isolator installed between the saddle frame and the vibrator, the vibration of the vibrator is efficiently transmitted to the joint cutting plate, and the joint cutting plate can be smoothly pushed into the concrete. Furthermore, a turning member is interposed between the connecting member and the saddle frame, and the joint cutting plate can be turned horizontally at any angle, so that The joint can be cut at a position shifted from the center line, or the joint can be cut at a position where the center lines intersect. Another major advantage is that it has a simple structure, is easy to handle, has good workability, is less likely to break down, and is economical because it requires little maintenance and management.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the joint cutting device installed on a self-propelled vehicle, FIG. 2 is a side view of the joint cutting device partially cut away, and FIG. 3 is a front view of the same, FIG. 4 is a front view showing a state of joint cutting by the joint cutting plate, and FIG. 5 is a schematic plan view showing an example of rotation of the lifting machine and the joint cutting plate. 1... Self-propelled vehicle, 4... Swivel base, 9... Joint cutting device, 11... Lifting boom, 13... Arm, 1
5... Vertical movement cylinder, 16... Protective outer case, 17... Protective inner case, 21... Saddle-shaped frame, 2
2... Connecting member (pressing direction changing mechanism), 23...
Vibration isolator, 24... vibrator, 25... joint cutting board,
34...Swivel member, 40...Remote control device.

Claims (1)

[Claims] 1 A partitioning machine in which a partitioning device 9 is attached to a raising/lowering boom 11 and an arm 13 provided on a swing base 4 equipped on a self-propelled vehicle 1, and a vertically moving cylinder 15 is attached to the arm 13 in a replaceable manner. The partitioning device 9 is attached to the lower end of the vertically movable cylinder 15 via a coupling member 22 and a saddle-shaped frame 21, and the coupling member 22 is connected to a pressing shaft 29 installed horizontally on a bracket 28 and The saddle-shaped frame 21 has a pressure-receiving metal fitting 33 having an arc-shaped pressure-receiving surface 30 that receives pressure.
3, the vibrator 24 is attached, and the vibrator 24
A partitioning machine characterized in that a partitioning plate 25 is attached to the partitioning machine.