CS242833B1 - Road surface cutting equipment - Google Patents

Abstract

The device is intended for cutting the surface of roads and similar surfaces during small-scale repairs. It consists of a grinding wheel clamped to the shaft of a hydraulic motor, firmly connected to a supporting frame equipped with a three-wheel chassis and a hingedly attached guide rod with a guide handle equipped with a hydraulic motor controller. A double-reversing lever is pivotally attached to the front part of the supporting frame, on the front arm of which the front travel wheel is mounted and the rear arm of which is pivotally connected to a push rod equipped at the free end with a bar with adjustment holes, into one of which a pin is inserted, which is also inserted into the hole of the stop adjuster. Behind the bar, both a stop and a yoke are located and firmly connected to the rear part of the frame.

Description

(54)

Equipment for road surface cutting

The device is designed for cutting road surfaces and similar areas for small-scale repairs. It consists of a cut-off wheel, clamped to the hydraulic motor shaft, rigidly connected to a support frame provided with a three-wheel undercarriage and a hinged guide bar with a guide handle fitted with a hydraulic motor control. To the front part of the supporting frame is a double-reversible lever, on whose front arm is mounted the front traveling wheel and whose rear arm is swinging connected to a push rod with a bar at its free end with adjusting holes, into one of which is inserted pin, hole of the adjusting stop. Behind the bar are located and firmly connected to the rear part of the frame, on the one hand the stop and on the other the yoke by which the pushed rod is guided.

242 833

242 833 (11) (Bl ·) (51) Int. Cl4

OJ E 01 C 23/09

- 1 242 833

The device is designed for cutting asphalt-concrete or cement-concrete surface of pavements and similar areas for repairs of small extent ·

Before repairing the pavement or before excavating in the pavement, the pavement surface is cut so that it is not disturbed to a greater than necessary extent during demolition work and that subsequent repairs can be carried out in good quality and smoothly. For cutting the road surface, carborundum or diamond cut-off wheels are clamped to the shaft of the drive unit, generally consisting of a gasoline internal combustion engine mounted in a support frame, with a chassis, all driven into engagement. These devices are designed especially for extensive work, where they guarantee the creation of high-quality long continuous cut. However, they are very material, complex and expensive. For small-scale repairs, where the road surface is only cut around a pothole, around a drain, and the like, the time taken to transport, prepare, adjust and manipulate the equipment is much longer than the actual cutting process. Therefore, lightweight, most often handheld power cutters are used, with which they are either cut by hand or attached to a special chassis to ensure the correct depth of cut. However, such a device is again unnecessarily large and massive, since it contains a number of redundant parts intended for handheld cutting.

The above-mentioned drawbacks are eliminated by a road surface cutting device, consisting of a cut-off wheel clamped to the drive unit shaft, preferably comprising a hydraulic motor fixedly connected to a support frame provided with a pair of rear traveling wheels in which the guide bar is guided. , which is characterized in that it is pendulous to the front of the support frame

242 833 attached to a twin lever on the front arm of which the front traveling wheel is mounted and whose rear arm is pivotally connected to a pushed rod provided with a bar at its free end with adjusting holes, into which one pin is inserted into the hole of the adjusting stop wherein a stop and a yoke are guided behind the bar and fixedly connected to the rear of the support frame through which the push rod is guided.

The main advantage of the device is its simplicity and low weight. It allows easy handling when repairing pavements whose surface can be cut to a depth of 120 mai. It has sufficient power, it is very easy to get into the cut, and the guiding during the working movement is accurate. Especially in the case of frequent changes in the cutting guide, the device is very operative, so that it is possible to follow up the repair work without delay. If the cutting disc is accidentally pulled out of the cut, its axis remains horizontal so that the blade is not bent, reducing the possibility of damage. Due to the compactness of the equipment, it is suitably complemented by a set of other hydraulically driven equipment used for minor road repairs.

1 is a side view and FIG. 2 is a plan view of the apparatus;

Example

The road surface cutting device consists of a cut-off wheel peeled to the drive unit shaft 2, consisting of a hydraulic motor fixed to the support frame 3, provided with a pair of rear traveling wheels 5, in which the guide bar 6 with guide handle 7 is hinged. 2. A double-reversible lever 9 is pivotably attached to the front of the support frame 3, on whose front arm 10 is mounted the front traveling wheel 4 and whose rear arm 11 is pivotally connected to a push rod 12 provided with a bar 13 with adjusting holes 14 at its free end. A pin 15 is inserted into one of the adjusting holes 14 and is simultaneously inserted into the opening of the adjusting stop 16. Behind the bar 13 are a stop 17 fixedly connected to the rear part of the frame 3 and the yoke 18, also firmly connected to the rear part of the frame 3. freely guided compression rod 12.

f · * ·

- 3,242,833

The depth of cut is adjusted by means of the corresponding adjusting hole 14 in the bar 13 of the push rod 12 and by means of a pin 15 which is simultaneously inserted into the hole of the adjusting stop 16. In the out of engagement position the bar 13 is supported against the stop 17. 5, but also the front travel wheel 4. The push rod 12 is guided by the yoke 18 so that the adjusting stop 16 is pushed to the stop 17.

Claims (1)

SUBJECT OF THE INVENTION A device for cutting a road surface, consisting of a cut-off wheel clamped to a drive unit shaft, preferably comprising a hydraulic motor firmly connected to a support frame provided with a pair of rear wheels, in which a guide bar with a guide handle provided with a drive unit actuator is hinged; In the front part of the supporting frame (3), a double pivot lever (9) is swivelly mounted, on whose front arm (10) a front traveling wheel (4) is mounted and whose rear arm (11) is pivotally connected to a pushed rod (12) provided at the free end by means of a bar (13) with adjusting holes (14), into which one the pin (15) is inserted at the same time into the hole of the adjusting stop (16), behind the bar (13) they are placed and firmly connected to the rear 3 (stop) (17) and yoke (18), by means of which the compression rod (12) is guided.