JPH048565B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibrating joint cutting device used in the construction of concrete dams, etc., and a joint cutting machine in which this joint cutting device is attached to a lifting machine of a self-propelled vehicle.

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
No. 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 (Jikosho
57-12012) 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.

One of the present inventions is to provide a coupling member having a pressing direction changing mechanism on a saddle-shaped frame, attach a vibrator to the frame of the saddle-shaped frame via a vibration isolator, and provide a joint to the vibrator. Another aspect of the present invention is a joint cutting device for attaching a cut plate, and another aspect of the present invention is a joint cutting device that attaches the above-mentioned joint cutting device to a lifting machine installed in a self-propelled vehicle using the coupling member. The purpose is to provide a joint cutting device and a joint cutting machine that solve the above-mentioned conventional problems, have good joint cutting performance and workability, are excellent in versatility, have low operating noise, and have low maintenance and repair costs. . Hereinafter, the present invention will be explained with reference to the drawings.

1 to 4 show an embodiment of the present invention. In these figures, 1 is a self-propelled vehicle, and on a vehicle body 3 running on an endless track 2,
A swing base 4 is placed on the swing base 4 via a swing mechanism 5 so as to be able to swing left and right. 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 for raising and lowering a joint cutting device 9, which will be described later. A second lifting boom 13 is provided at the tip of the second lifting boom 13 so as to be rotatable up and down with an axis pin 12, and a first lifting boom 13 is attached to the tip of the second lifting boom 13 with an axis pin 14.
a link 15 and a second link 1 attached to the tip of the first link 15 by a shaft pin 16
7, the first hydraulic cylinder 18 raises and lowers the first boom 11 about the pivot 10, and the second hydraulic cylinder 19 raises the second boom 13 about the pivot pin 12. It is configured so that it can be rotated up and down and the links 15 and 17 can be moved by the third hydraulic cylinder 20.

The joint cutting oscillator 9, which is attached to the lifting machine 6 of the self-propelled vehicle 1 and constitutes a joint cutting machine, is attached to the saddle-shaped frame 21.
, a coupling member 22 attached thereon, a vibrator 24 attached to the frame of the saddle-shaped frame 21 via a vibration isolator 23, and a joint cutting plate made of a steel plate attached to this vibrator 24. It is equipped with 25. The connecting member 22 is for attaching the joint cutting device 9 to the lifting machine 6, and is connected to the second lifting boom 13 of the lifting machine 6.
and the tip of the second link 17, the pins 26, 2
7, and a pressing shaft 29 installed horizontally on this bracket 28.
The lower plate 31 of the bracket 28 is loosely fitted into the notch 32 and the pressure receiving metal fitting 33 is attached to the fixed plate 35. There is.

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 fixed plate 35 by screwing a nut 39 onto the male thread at the lower end thereof, and can be rotated about 180 degrees left and right about the mounting shaft 38 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 sides 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. The lower corner 25a of the joint cutting plate 25 on the side opposite to the lifting machine 6 (the right side in FIG. 1) is formed in an arc shape.

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.

In FIG. 1, a pin 26 is attached to the tip of the second lifting boom 13 and the second link 17 of the lifting machine 6.
27, the joint cutting device 9 is attached to the lifting machine 6, the joint cutting board 25 is suspended vertically on the concrete C before hardening, and the hydraulic motor 42 of the vibrator 24 is connected to a flexible pipe (not shown). ) indicates a ready state connected to the hydraulic unit of the self-propelled vehicle 1. To cut the joint from this state, attach the joint plate 50 to the joint cutting plate 25, send hydraulic oil to the hydraulic motor 42, and vibrate. Hydraulic cylinder 18 while operating child 24
shrink. As a result, the lifting machine 6 and the joint cutting device 9 rotate downward about the pivot 10, and the joint plate 50
is strongly pushed into the concrete C together with the joint cutting board 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 also has a free state 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 lifting machine 6 side, and is efficiently transmitted to the joint cutting plate 25. Furthermore, in the above, the lifting machine 6 rotates downward about the pivot shaft 10 to move the joint cutting device 9 in an arc shape, or the pressing shaft 29 of the pressing direction changing mechanism is rotated on the arc-shaped pressure receiving surface of the pressure receiving fitting 33. 30, the joint cutting board 25 is pushed vertically into the concrete.

After pushing the joint plate 50 together with the joint cutting plate 25 into the concrete C as described above, the hydraulic cylinder 18 is extended and the lifting machine 6 is rotated upward, leaving the joint plate 50 in the concrete. Pull out the joint cutting board 25 upward. At this time, bracket 2
Since the bottom plate 31 of 8 touches the pressure receiving metal fitting 33 and lifts it upward, the joint cutting plate 25 rises in an arc, but the lower corner 25a of the joint cutting plate 25 on the opposite side from the lifting machine 6 is formed in an arc shape. Therefore, immediately before the joint cutting board 25 is pulled out from the concrete C, the lower corner 25a on the outer peripheral side of the arc movement does not act to lift up the surface layer of the concrete C and disturb the surface of the concrete C. .

In pushing and pulling out the joint cutting plate 25, the hydraulic cylinders 19 and 20 are expanded and contracted as necessary. When cutting a joint at a position parallel to the center line of travel of the self-propelled vehicle 1, as shown in FIG.
At the same time, the remote control device 40 is operated to rotate 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, but when moving the joint cutting board 25 slightly in the width direction, the raising booms 11 and 13 are moved up and down. You can also rotate it to reach your goal.

However, the joint cutting device and the joint cutting machine of the present invention are basically those shown in the above description and drawings, but
In addition to self-propelled vehicles and lifting machines, the shapes and structures of each member and device are not limited to these.

As explained above, the joint cutting device of the present invention is
It is equipped with a connecting member that can be attached to a movable support and has a pressing direction changing mechanism that converts the diagonal pressing force from the movable support into a vertical direction, and this can be pinned to the lifting boom of a lifting machine, etc. Since it is possible to cut joints in concrete by simply attaching it to a power shovel, for example, you can attach the joint cutting device as an attachment instead of the bucket of a power shovel to cut the joints using a nearby civil engineering machine. be able to. In addition, since it is possible to use a lifting machine that raises and lowers the boom up and down using a hydraulic cylinder, noise generation can be suppressed as much as possible, and a vibration isolator is installed between the saddle frame and the vibrator. Since the structure is such that the vibration of the vibrator is efficiently transmitted to the joint cutting plate, 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 It is possible to cut a joint at a position shifted from the center line, or a joint can be cut at a position where the center line intersects with the center line. 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 drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the joint cutting device attached to a lifting machine of a self-propelled vehicle, and FIG. 2 is a side view of the joint cutting device with a portion cut in cross section. FIG. 3 is a front view of the same, FIG. 4 is a front view showing the 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. DESCRIPTION OF SYMBOLS 1... Self-propelled vehicle, 6... Lifting machine, 9... Joint cutting device, 11... First hoisting boom, 13... Second hoisting boom (mobile support), 21... Saddle-shaped frame, 22...
...Connecting member (pressing direction changing mechanism), 23... Vibration isolator, 24... Vibrator, 25... Joint cutting plate, 25
a...lower corner, 34...swivel member, 40...remote control device.

Claims (1)

[Claims] 1. A coupling member 22 that can be attached to a movable support is provided on a saddle-shaped frame 21, and a vibrator 24 is attached within the frame of the saddle-shaped frame 21 via a vibration isolator 23. In addition, a joint cutting plate 25 is attached to the vibrator 24, and the coupling member 22 has a pressing direction changing mechanism for converting the oblique pressing force from the movable support into a vertical direction. A joint cutting device featuring: 2. The joint cutting device according to claim 1, wherein the lower corner 25a on one side of the joint cutting plate 25 is formed in an arc shape. 3. The joint cutting device according to claim 1, wherein the coupling member 22 is provided on the saddle frame 21 via a pivot member 34 so as to be pivotable within a horizontal plane. 4. The joint cutting device according to claim 3, characterized in that a remote control device 40 is connected to the rotating member 34. 5. A connecting member 22 is provided on the saddle frame 21, which is attachable to the movable support and has a pressing direction changing mechanism for converting the oblique pressing force from the movable support into the vertical direction. A lifting machine 6 in which a self-propelled vehicle 1 is equipped with a joint cutting device 9 that attaches a vibrator 24 within the frame of a saddle-shaped frame 21 via a vibration isolator 23 and attaches a joint cutting plate 25 to the vibrator 24.
A joint cutter that is attached to the raising/lowering booms 11 and 13 of the above-mentioned joint member 22. 6 Lower corner 2 of the joint cutting board 25 on the opposite side from the lifting machine 6
6. The joint cutter according to claim 5, wherein the joint cutter 5a is formed in an arc shape.