JPH0941318A - Traveling adjustment device of crawler type cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a fine adjustment of a traveling speed and a traveling direction by providing a first adjustment screw which is capable of making a fine adjustment of a rocking position of a rocking arm substantially at an intermediate point of the rocking arm whose one end is rockably pivoted and providing a second adjustment screw on an arm which is fixed with the other end of the rocking arm in such a fashion that it may be opposed to each adjustment handle. SOLUTION: A first adjustment screw 34, which is capable of making a fine adjustment of a rocking position of a rocking arm 21, is provided substantially at an intermediate point of the rocking arm 21 whose one end is rockably pivoted. Second adjustment screws 13 and 14 are provided on a horizontal arm 22 fixed with the other end of the rocking arm 21 as opposed to adjusting handles 11 and 12. The traveling speed of a concrete cutter car during cutting work, or more precisely the cutting speed of a blade is finely adjusted by operating the first adjusting screw 34. The traveling direction is further finely adjusted by operating the second adjusting screws 13 and 14. This construction makes it possible to finely adjust the traveling speed and the traveling direction of the cutter easily and definitely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a travel adjusting device for a crawler type cutting machine, which is provided with a traveling means by a crawler and is capable of finely adjusting the traveling of a cutting machine having a blade for cutting a road or the like.

[0002]

2. Description of the Related Art In a concrete cutter for cutting various kinds of concrete such as roads, as a means for moving in a cutting direction, a manual type by pushing by hand or an automatic traveling device is used. In addition, when the concrete cutter is largely turned, a hydraulic device or the like is usually used to lift the front of the machine to move the center of gravity of the machine to the rear, and the force of an operator is used to change the direction. And correction of the direction during straight line progress during cutting work,
Correction of the direction for the progress of cutting along a predetermined gentle curve has been performed manually by an operator operating a bar projecting to the rear of the concrete cutter machine body.

[0003]

On the other hand, as a concrete cutter, it is also used that its traveling is performed by a crawler driven by a hydraulic motor. This crawler type concrete cutter is carried out by changing the number of rotations of a hydraulic motor for forward and backward movement, similar to a traveling device by a crawler used in various construction machines.

In such a concrete cutter equipped with a crawler, it is desired that the traveling speed of the concrete cutter is high and the direction of the concrete cutter can be changed when the concrete cutter is moved to the planned cutting position. As described above, at the time of cutting work, large control of the oil amount to the hydraulic motor for driving the crawler is not preferable, but rather precise control is required by fine adjustment.

In addition, when the road surface is inclined during the cutting operation, or when the cutting device located on one side of the traveling device (crawler) cuts the load, the straightness is impaired in the traveling direction. The traveling direction is likely to change, and fine adjustment of the traveling direction is required. Furthermore, when the traveling speed is increased beyond the cutting ability of the blade during traveling during cutting work, the front of the concrete cutter car is lifted, and the cutting depth of the blade becomes shallow and the predetermined cutting depth is reached. Can't be maintained.

Therefore, an object of the present invention is to provide a traveling adjustment device for a crawler type cutting machine, which can easily and reliably finely adjust the traveling speed and traveling direction of a cutting machine equipped with a crawler traveling means. And

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a travel adjusting device for a crawler-type cutting machine, which is provided with adjustment handles for respectively supporting left and right travel drive devices of a crawler. The first position that allows the swing position of the swing arm to be finely adjusted to a substantially intermediate position of the swing arm that is freely supported.
A second adjusting screw is disposed on the adjusting screw and an arm fixed to the other end of the swing arm so as to face each adjusting handle.

Since the present invention is constructed as described above, when the adjusting screw is not operated, the crawler can perform an arbitrary speed and a rapid direction change by the operation of the adjusting handle by the operator, and at the time of cutting work. The fine adjustment of the traveling speed is surely performed by adjusting the first adjusting screw, and the fine adjustment of the traveling direction is surely performed by adjusting the second adjusting screw.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a concrete cutter wheel 3 traveling by a crawler 1 to which the present invention is applied and equipped with a blade 2. The blade 2 is pivoted on a vertically movable support 5 along an arm 4 supported by the vehicle body. It is rotatably supported and is rotationally driven by a hydraulic motor, a transmission motor, or the like. Arm 4
Can be fixed at an arbitrary angle in the lower part, whereby the angle of the cutting surface of the blade can be arbitrarily set from vertical to horizontal.

An operator's seat 6 is provided at the rear of the concrete cutter car 3, and various operating members are installed on the vehicle body. As the operation member, as shown in FIG. 2, a handle 11 for adjusting flow rate adjusting valves 9, 10 for controlling the oil amount of hydraulic motors 7, 8 for driving the left and right crawlers,
It has twelve. By operating the adjusting handles 11 and 12, the amount of hydraulic pressure from the hydraulic source to the hydraulic motors 7 and 8 is controlled by the flow rate adjusting valves 9 and 10, and the oil from the hydraulic motors 7 and 8 passes through the return passage. It circulates. As shown in FIGS. 3 and 4, the adjustment handle 11,
In the vicinity of the base portion of 12, the end portion 1 of the second adjusting screws 13 and 14
5 and 16 are arranged to face each other.

The lower ends of the second adjusting screws 13 and 14 are the body 1
2 of two parallel swinging arms that are swingably supported by a support shaft 20 at the end of a bracket 18 fixed to 7.
The adjustment knobs 24 and 25 provided on the other ends of the second adjusting screws 13 and 14 are screwed into the screw holes 23 at both ends of the horizontal arm 22 fixed to the upper end of the body 1. It projects from the rear surface 26. Two parallel swing arms 21,
21 is provided with a long hole 27 at a substantially middle portion thereof.
A shaft 28 is fitted to the shaft 7, and a cylindrical round nut 30 is provided at an intermediate portion of the shaft 28 so as to be rotatable between two parallel swing arms 21 and 21. A screw hole 31 penetrates through the center of the round nut 30, and a screw 35 at the end of the first adjusting screw 34 having a screw 33 that is screwed into the screw 32 fixed to the machine body 17 is provided in the screw hole 31. Are screwed together, and the other end of the first adjusting screw 34 projects from the rear surface 26 of the machine body 17 similarly to the second adjusting screw.

When the travel adjusting device having the above-mentioned structure is operated, the first adjusting screw 34 is sufficiently loosened and retracted in advance, whereby the swing arm 21 is swung clockwise in FIG. Every second adjustment screw 13, 1
Keep the ends 15 and 16 of 4 sufficiently away from the adjusting handles 11 and 12. In this state, the adjustment handles 11, 12
Can be freely operated, so that the operator can freely drive and drive the concrete cutter car to the planned cutting position.

After the blade is set at the predetermined cutting start position, the adjusting knob 35 of the first adjusting screw 34 is screwed and rotated to rotate the swing arm 21 counterclockwise in FIG. The ends 15 and 16 of the adjusting screws 13 and 14 are brought into contact with the adjusting handles 11 and 12, and further swung forward. In addition, during this operation, the first adjusting screw 34 is set to the body 1
While the screw 32 fixed to 7 moves back and forth in a certain direction, the swing arm 21 swings around the fulcrum 20, but the first adjusting screw 34 is rotatable on the swing arm 21. The shaft 28 of the round nut 30 supported by the swing arm 2
Since it is guided in the elongated hole 27 formed in No. 1, the rotation of the first adjusting screw 34 is surely converted into the swing motion of the swing arm 21.

As a result, the concrete cutter wheel moves forward, and by operating the first adjusting screw 34, 30
The speed can be adjusted within the range of seconds to 300 seconds, and the operation of the first adjusting screw 34 is stopped at a predetermined speed. The concrete cutter car moves forward at a constant speed in this state. During such cutting work, when the road surface is inclined or one of the crawlers rides on a pebbles, it is attempting to deviate from the predetermined cutting direction, or if the planned cutting line is curved, the operator , 2nd adjusting screw 13, 1
By rotating one of the adjusting handles 11 and 12 by rotating any one of them, the traveling direction of the concrete cutter vehicle is corrected to a predetermined direction. As described above, the speed of the concrete cutter wheel during the cutting work, that is, the cutting speed of the blade can be surely finely adjusted by operating the first adjusting screw 34, and the traveling direction is the second adjusting screw 1.
The fine adjustment can be surely performed by the operations of 3 and 14.

In the above embodiment, an example in which the first and second adjusting screws are manually operated has been shown. However, by replacing them with a conduction motor, a servo system, and an electromagnetic type flow rate adjusting valve, remote operation by radio is performed. It is also possible to apply it when cutting parts that cannot be accessed by the operator, such as cutting and dismantling of nuclear facilities.

[0016]

The present invention is configured as described above.
The traveling speed and traveling direction of the cutting machine provided with the traveling means by the crawler can be easily adjusted by the fine adjustment means in addition to the normal operation.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a crawler type cutting machine to which the present invention is applied.

FIG. 2 is a crawler drive hydraulic system diagram of the crawler type cutting machine.

FIG. 3 is a plan view of a fine adjustment portion according to the present invention.

FIG. 4 is a side view of the same.

FIG. 5 is a perspective view of the same.

[Explanation of symbols]

 1 Crawler 2 Blade 3 Concrete Cutter Wheel 4 Arm 5 Support 6 Driver's Seat 7 Hydraulic Motor 8 Hydraulic Motor 9 Flow Control Valve 10 Flow Control Valve 11 Handle 12 Handle 13 Second Adjustment Screw 14 Second Adjustment Screw 15 End 16 End 17 Airframe 18 Bracket 20 Support shaft 21 Swing arm 22 Horizontal arm 23 Screw hole 24 Adjusting knob 25 Adjusting knob 26 Rear surface 27 Long hole 28 Shaft 30 Round nut 31 Screw hole 32 Screw 33 Screw 34 First adjusting screw 35 Screw

Claims (2)

[Claims] 1. A travel adjusting device for a crawler-type cutting machine comprising adjustment handles for respectively supporting left and right traveling drive devices of a crawler, wherein one end of the traveling adjusting device is at a substantially intermediate position of a swinging arm that is swingably supported. A crawler type in which a first adjusting screw capable of finely adjusting the swinging position of the swinging arm and a second adjusting screw arranged on the arm fixed to the other end of the swinging arm so as to face each adjusting handle. Cutting machine running device. 2. A travel adjusting device for a crawler type cutting machine according to claim 1, wherein each adjusting screw can be adjusted by remote control.