JPH07107251B2 - Drive system support device for rotor for road surface cutting - Google Patents

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor drive system supporting device for cutting a road surface, which can deepen the cutting depth of the road surface and enable flash cutting at both ends of the rotor.

[0002]

2. Description of the Related Art In a conventional load stabilizer or load cutter, a frame for supporting a rotor shaft and a rotor driving device are provided so as to project on both sides of a rotor, so that a flash cut (cutting to a full position on a side edge) is required. It was impossible. (For example, Japanese Patent Publication No. 61-47925)

For this reason, as shown in FIG. 1, the drive source of the drum 2 of the rotor 1 is provided as a hydraulic motor 5 directly connected to the torque hub 4 inside the drum, and this hydraulic motor is supported by one side through an outer opening casing 6. A device supported by the frame 7A has been developed. This device is capable of flash cutting on the side of the frame 7B that does not have a drive system, but cannot perform flash cutting on the drive system side 7A as in the conventional case.
That is, the base flange 6A of the casing 6 is the pressure oil pipe 15
Since it also serves as a protective plate, it has a large width, and since a clearance B is required between it and the drum 2, the distance A from the drum end to the outside of the base flange becomes 20 cm or more. Furthermore, it is clear from the figure that the cutting depth cannot be increased.

With this device, for example, a two-lane road (road width 6.5 to 8.0) having a median strip as shown in FIG.
The order of construction will be described for the case of cutting up to the curb on both sides in m). First, the safety cone 50 is arranged in the center of each lane E, F of the road, the E side is stopped, and the cutting machine 52 equipped with the conveyor 53 runs with the cutting waste material loading dump 51 as the preceding vehicle and runs on the E1 side. Build a specified section. Next, both the dump truck and the cutting machine move backward to the starting position, enter the E2 side, and repeat the same turning as E1. After making E available for traffic, stop F and turn F1 in the same direction (forward direction) as the general traffic vehicle on the E side before moving to F2.

However, in F2, the flash cut on the side of the median strip cannot be performed, and in order to do this, it is necessary to reverse the traveling directions of the dump truck and the cutting machine on the road and work in the reverse direction.

[0006] In an actual row, a dump truck, a cutting machine, a water supply truck, and a cleaning vehicle are arranged in this order, and therefore it is difficult to turn them over on a narrow road, and it is extremely dangerous work at night. Therefore, in the method using the conventional device, since the uncut portion of only 30 to 50 cm is cut, a manual machine such as a breaker must be used, so that the work period is not constant and the work cost is increased. . In addition, even for one-sided construction, depending on the turning location, as a full-scale road closure to ensure the safety of traffic vehicles,
The reality is that they are turning.

[0007]

SUMMARY OF THE INVENTION The present invention provides a rotor drive support device for eliminating the above disadvantages, and a cutting machine equipped with the device of the present invention allows a vehicle to move in the same direction. It is possible to flash cut to curbs or obstacles on both left and right sides while moving, and it is always possible to work on ordinary vehicles during road construction.

[0008]

In an apparatus of the present invention, an outside opening surface of a hydraulic motor housing casing is closed by a closing end plate located on the same plane as an opening end of the drum, and the closing end plate has an upper half portion thereof as a rotor. The support frame is integrally fixed to the support frame, and a plurality of pressure oil passages connected to the pressure oil pipes of the hydraulic motor are formed in the support frame, and the end of each pressure oil passage penetrates the closed end plate. Each of the through holes is connected to the pressure oil pipe of the hydraulic motor through a flange attached to the inner surface side of the closed end plate. The above-mentioned device of the present invention is provided at one end or both ends of the rotor drum. By providing it at both ends, a large excavating force can be obtained, and moreover, both sides can be flash cut.

[0009]

[Effects] Both outer sides of the rotor supported by the device of the present invention are projected by the same thickness as the thickness of the support frame on both the driving side and the non-driving side, and the width of these is at most 6 to 7 cm. Because of this, it does not hinder the flash cutting, and the lower edge of the support frame can be raised above the ground surface, so the cutting depth can be increased. Therefore, in the road repair work, all the forward work can be performed without being affected by the road structure or the surrounding environment, and the work safety is secured.

[0010]

1 is a rotor, 2 is a rotor drum, 3 is a claw, 4 is a torque hub connected to the inside of the drum, 5 is a hydraulic motor, 6 is a cylindrical casing with a flange for mounting the hydraulic motor, and 7 is a support. It is a frame. In the present invention, a pressure oil passage 8 is provided in the frame 7A or 7B on the hydraulic motor side. The method of constructing the pressure oil passage 8 is performed by, for example, the substrate 7
After forming the groove 9 at a required depth on one surface of a, the lid member 10 is welded to the surface excluding the end of the passage. As a result, the open end 8a is opened at the end of the passage. The outer opening surface of the cylindrical casing of the hydraulic motor is closed by a closing end plate 14, and the closing end plate is set to be flush with the outer opening end of the drum. Reference numeral 21 is a mounting bolt. The closed end plate is provided with through holes 14a respectively corresponding to the open ends 8a of the pressure oil passage of the support frame, and a flange 16 for connecting the pipe 15 of the hydraulic motor to the through holes. It is bolted to the inner surface of the plate. Reference numeral 17 is a bolt, 18 is a counterbore provided on the outer surface side, and 19 and 20 are O-rings.

Reference numeral 11 denotes a half-moon-shaped spacer interposed between the support frame 7 and the upper half of the closed end plate 14,
A through hole 12 is provided to connect to the open end 8a of the support frame and the through hole 14a of the closed end plate. The support frame 7, the spacer 11 and the closed end plate 14 are firmly and integrally attached by bolts 22. Reference numeral 23 is an alignment pin. If a stepped end plate corresponding to the spacer portion is used for the closed end plate 14, the spacer can be omitted.

Reference numeral 24 is a spiral ring for preventing the intrusion of earth and sand into the drum, and is provided between the outer circumference of the motor casing and the inner surface of the drum so that each acts as a reverse screw.

The mounting structure of the torque hub 4 is the same as the conventional one, and the rotating flange 4a is the inner flange 2a of the drum.
It is fixed by a bolt 25. Reference numeral 26 is a wrench operating hole, which is closed after the mounting work is completed. In addition,
The fixed shaft flange 27 of the torque hub has bolts 28.
The motor 5 is fixed to the motor casing 6, and the motor 5 is fixed to the connecting flange by the bolt 29 so that the motor output shaft and the torque hub input shaft are connected in advance.

[0014]

The frame supports the cylindrical casing in the drum, and the pressure oil supplied from a hydraulic pump (not shown) is passed through the pressure oil passage 8 provided in the frame from the through holes 12 and 14a of the spacer 11 and the end plate 14 to the pipe 15 To introduce. The hydraulic motor 5 rotates the input shaft (not shown) of the torque hub and transmits the deceleration output to the drum to rotate the rotor. Since the motor casing of this device is closed by the closed end plate, cutting waste does not enter the casing. The rotor equipped with the device of the present invention can have a large cutting depth D as shown in FIG. 3 and can perform efficient work with the flash cut effect.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a conventional device.

FIG. 2 is a sectional view of an essential part of the device of the present invention.

[Fig. 3] Side view

FIG. 4 is an enlarged cross-sectional view showing a connection state of a pressure oil path.

FIG. 5 is a schematic plan view showing a process of road repair work.

[Explanation of symbols]

 4 is a torque hub 5 is a hydraulic motor 6 is a motor casing 7 is a frame 8 is a pressure oil passage 11 is a spacer 14 is a closed end plate

Claims (1)

[Claims] 1. A drive hydraulic motor directly connected to a torque hub in a rotor drum, and a cylindrical casing for accommodating and supporting the motor in the rotor drum are concentrically provided and supported at one opening end of the rotor drum. In a road surface cutting rotor supported by a frame, an outer opening surface of the hydraulic motor housing casing is closed by a closing end plate located on the same plane as the opening end of the drum, and the closing end plate is an upper half thereof. Part is integrally fixed to the rotor support frame, and a plurality of pressure oil passages connected to the pressure oil pipes of the hydraulic motor are formed in the support frame, and the ends of these pressure oil passages are the closed end plates. Through each of the through-holes, and each of the through-holes is connected to a pressure oil pipe of the hydraulic motor via a flange attached to the inner surface side of the closed end plate. Drive system support device for a road cutting rotor.