JPS5813684B2 - Slope shaping machine for construction machinery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables the slope surface to be finished by continuous construction by cutting and rolling on a slope, and also allows the slope surface shaping machine to be controlled in the direction of cut during slope shaping work using a rotating device. This invention relates to a slope shaping machine for construction machinery that can change the slope arbitrarily.

As an example of a conventional construction machine for performing slope work, a hydraulic excavator having a slope bucket is shown in FIGS. 1 and 2.

In the figure, 1 is a hydraulic excavator main body, and 2 is a boom, which is pivotally supported on the hydraulic excavator main body 1 so as to be able to rise and fall freely.

An arm 3 is rotatably supported on the boom 2, and has a slope bucket 4 connected to its tip.

4a is the bottom of the slope bucket. The slope bucket 4 has links 5, 6, the arm 3, and pins 7, 8, 9, and 10 forming a link mechanism.

11 is a bucket cylinder for rotating the slope bucket, 12 is a boom cylinder, 13 is an arm cylinder,
These cylinders are associated with a hydraulic control device, not shown.

Conventionally, when performing slope shaping work such as raking, cutting, pushing up, or rolling on a slope 14 using this type of hydraulic excavator equipped with a slope bucket, the boom cylinder 12 is first operated. The boom 2 is raised and lowered, the arm cylinder 13 is operated to operate the arm 3, and the bucket cylinder 1 is moved to align the bottom 4a of the slope bucket 4, that is, the rolling surface, with the slope 14.
It is necessary to carry out an operation to activate 1, and at least three or more operations are required at the same time, so the driving operation is difficult and requires skill.

In addition, the cutting direction during slope shaping work can only be done within the range of the hydraulic excavator body 1's travel, turning, and the above three operations, so the direction is limited and changing the direction requires moving the hydraulic excavator body. Therefore, the efficiency is poor, and if the operation is performed one by one, it takes time for each process, resulting in extremely poor efficiency.

In view of the above points, the present invention is easy to operate and performs slope shaping work, ie, raking up, cutting, pushing up, and rolling on sloped land, by changing the direction of travel arbitrarily and performing it in one step. The purpose of this invention is to provide a slope shaping machine for construction machinery that can perform continuous construction.

To achieve this objective, the slope shaping machine for construction machinery of the present invention includes a bracket attached to the working arm of the construction machine as part of a quadrilateral link mechanism, and a swing device attached to the lower part of the bracket. The main body of the slope shaping machine is composed of a box-shaped frame, and the inside of the box-shaped frame is partitioned by a partition plate, and a screw device is disposed on one side of the frame, and a screw device is disposed on the other side. The present invention is characterized in that a pressure device is provided, and the rotating device rotates the main body of the slope shaping machine equipped with the screw device and the rolling device to position the screw device and the rolling device. It is something.

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in FIGS. 3 to 17.

Figures 3 and 4 are for different slopes, respectively.
This figure shows how a hydraulic excavator equipped with the slope shaping machine of the present invention is operated, where 15 is the hydraulic excavator body, and 16 is a boom that can rise and fall freely around a fulcrum 17 provided on the hydraulic excavator body 15. It is pivotally supported.

Reference numeral 18 denotes an arm rotatably supported at the tip of the pool 16 by a fulcrum 19, and the pool 16 and the arm 18 form an arm rod 20 that can be bent in the vertical direction.

Reference numeral 21 denotes a bracket and an arm 18 forming the arm rod 20.
A quadrilateral link mechanism, which will be described later, is formed at the distal end of the frame to be pivotally supported.

Reference numeral 22 denotes a main body of the slope shaping machine, on which a rolling device 23 and a screw device 24 are installed side by side, back to back, and is connected to the bracket 21 with a rotation device 25 interposed therebetween.

26 is a packet cylinder, 27 is an arm cylinder, and 28 is a boom cylinder, each of which is controlled by a hydraulic control device (not shown).

5 and 6 are detailed views of the slope shaping machine attachment part seen from the screw device 24 side. The bracket 21 constitutes a link on the free end side, and the links 29, 30 and the arm 18 are connected to the pin 3.
1, 32, 33 and 34 are connected to form a quadrilateral linkage.

35 is a hydraulic motor for the screw, 36 is a hydraulic hose for the hydraulic motor for the screw, 37 is a hydraulic motor for swinging, 3
8 is a hydraulic hose for a hydraulic motor for turning.

FIGS. 7 and 8a show details of the mounting part of the slope shaping machine seen from the rolling compaction device 23 side, and show the method of converting the rotational force of the gasoline engine into vertical motion energy and transmitting it onto the rolling compaction plate 39. A vibrator 40 is attached and fixed, and the rolling plate 39 is attached to the slope shaping machine main body 22 by four frame brackets 41 so as to be slidable in the vertical direction.

The vibrator 40 may be fixed by welding 43 to the rolling plate 39 as shown in FIG. 8b, or may be fixed by tightening with bolts and nuts.

FIG. 9 shows further details of the screw device 24 and the rolling device 23. The slope shaping machine main body 22 is composed of a box-shaped frame (strength base material) 42.
The center of 2 is partitioned by a partition plate 43.

The screw device 24 and the rolling device 23 are arranged with the partition plate 43 in between.

Cutting blades 45 are formed at appropriate intervals on the outer periphery of the spiral screw 44 to facilitate cutting.

46 is a shaft, and the screw 44 is fixed to the shaft 46 in a spiral manner by welding.

The entire peripheral edge 47 of the rolling plate 39 is bent upward to facilitate movement and construction.

Reference numeral 48 denotes a column, which has a protrusion 49 and is slidably inserted in the guide pipe 50 fixed to a plurality of locations (four locations in the illustrated case) on the rolling plate 39 in the vertical direction.
is formed so as to slightly protrude from a vertically long notch 51 provided in the guide pipe 50'.

The notch length of the vertically long notch groove 51 is longer than the amplitude generated by the vibrator 40.

Further, the projection 49 prevents the rolling plate 39 from falling off.

Reference numeral 52 is a spring attached to the rolling plate 39 near the guide pipe 50 at a plurality of locations (four locations in the illustrated case) via a lower spring receiver 53 and an upper spring receiver 54.

The lower spring receiver 53 is fixed to the rolling plate 39, and the upper spring receiver 54 has a threaded portion 55 formed at its upper end and is attached to the frame 42 with a nut 56.

Therefore, the pressing force of the spring that constantly presses downward can be adjusted by adjusting the threaded portion 55.

FIG. 10 shows details of one example of the swing device 25, in which an outer ring 57 of a swing bearing is fixed to the bracket 21 with a plurality of bolts 58.

The inner ring 59 of the swing bearing is rotatably connected to the outer ring 57 via a ball 60, and is connected to the slope shaping machine 22 by a bolt 61.
It is tightened and fixed to a frame 42 that forms a.

Further, an internal gear portion 62 is provided on the inner diameter portion of the inner ring 59, and the internal gear portion 62 is arranged to mesh with a pinion gear 65 fixed to the shaft 64 of the swing hydraulic motor 37.

The swing motor 63 is fixed to the bracket 21 with bolts 66, and the shaft 64 projects through a hole 67 bored in the bracket 21.

Further, the swing hydraulic motor 37 is connected to a hydraulic control device (not shown).

FIG. 11 shows an example of the drive section of the screw device 24, in which the screw hydraulic motor 35 is connected to the frame 4.
The screw 4 is fixed to the side wall of the screw 2 by a bolt 63 and supported on a bearing (not shown) by a roller chain 68 hung on a chain wheel at the end of the drive shaft.
It is connected to the chain wheel at the end of No. 4 shaft.

Further, the screw hydraulic motor 35 is connected to a hydraulic control device (not shown).

FIG. 12 shows a hydraulic control circuit that constitutes a hydraulic control device for the screw device 24 and the turning device 25.

Screw hydraulic motor 35 and swing hydraulic motor 3
7 is connected by a hydraulic line 74 to directional valves 69 and 7.
0 is connected.

A parallel circuit of a check valve 71 and a variable throttle valve 72 is connected to the oil feed line 75 of the directional control valve 69.
A variable throttle valve 73 is connected to the oil feed pipe line 76 .

The oil feed lines 75 and 76 are connected to one oil feed line 77, and the oil feed line 77 is connected to a switching valve 78.

A relief valve 80 is branched and connected to the oil supply pipe 79 to the switching valve 78, and a gear pump 82 is connected via a filter 81.
It is connected to the.

83 is an engine for driving the gear pump 82.

A hydraulic tank 84 is connected to the suction side of the gear pump 82, and is also connected to the oil return circuit 8 of the directional control valve 69, 70.
5 and a drain oil pipe line 86 are connected.

Next, the operation of the slope shaping machine of the present invention constructed as described above will be explained.

In the operating room of a hydraulic excavator equipped with the slope shaping machine of the present invention, the packet cylinder 26, the arm cylinder 27, and the boom cylinder 28 are hydraulically driven by operating a lever (not shown), and the poom 16 and the arm 18 are driven hydraulically.
rotates vertically.

Then, the slope shaping machine 22 is grounded on the ground surface.

Next, the gear pump 8 is driven by the driving engine 83.
2, and after passing the high pressure oil through the filter 81,
By switching the switching valve 78 from the N position to the A position using a lever, oil is sent to the oil delivery pipe 77.

The hydraulic pressure supplied to the screw hydraulic motor 35 and the swing hydraulic motor 37 via the directional switching valves 69 and 70 is controlled to an appropriate hydraulic pressure by variable throttle valves 72 and 73.

The above-mentioned slope shaping machine hydraulic excavator is usually positioned so that the screw device 24 is located ahead of the rolling device 23 with respect to the traveling direction, and this positioning is performed by the turning device 25.

When the swing hydraulic motor 37 is switched from the N position to the A position or the B position by operating the lever of the directional switching valve 70, the direction of rotation is reversed, and the rotation direction is changed by the meshing of the pinion gear 65 and the internal gear part 62. The slope shaping machine 22 is correctly positioned in the traveling direction.

Moreover, the turning angle can be 180 degrees or 360 degrees from either the left or right direction.

The screw device 24 is driven by a screw hydraulic motor 35 which is rotated by high pressure oil switched and supplied by a directional switching valve 69.

The direction of rotation of the screw 44 is reversed by switching from the N position to the A position or the B position by operating the lever of the direction switching valve 69.

The attitude of the slope shaping machine with respect to the slope angle is determined by operating the packet cylinder 26, arm cylinder 27, and boom cylinder 28, and the positioning of the slope shaping machine in the cutting direction can be arbitrarily determined by operating the rotation device 25. It is easily carried out in the direction of

Next, the rolling device 23 is driven by operating the vibrator 40.

In this embodiment, the vibrator is explained as using a gasoline engine, but due to noise considerations, it is also possible to use a hydraulic type that uses the hydraulic power source of the main body of the construction machine, or an electric pipe type. It is.

Therefore, if the slope shaping machine is grounded on the slope and travels while maintaining the correct posture on the ground, the rolling device 23 will continuously scrape up, cut, push up, or scrape down with the screw device 24. The impact compacts the slope uniformly.

13 to 17 show a mode in which the orientation of the slope shaping machine 22 with respect to the hydraulic excavator 15 to which the slope shaping machine of the present invention is attached is changed from a perpendicular direction to a parallel direction.

In the above description, a case has been described in which the screw device 24 and the rolling device 23 are operated simultaneously, but it goes without saying that these devices can be operated separately.

Since the present invention has the above-described configuration, operation is easy, the direction of work progress can be changed arbitrarily, and continuous construction can be performed in one step.
Work efficiency is improved and construction period can be significantly shortened.

[Brief explanation of the drawings] Figure 1 is an overall view of a conventional hydraulic excavator, Figure 2 is a perspective view of the slope bucket part of a conventional machine, and Figures 3 and 4 show the installation of the slope shaping machine of the present invention. 5 is a partial side view as seen from the screw device side, FIG. 6 is a partial front view as seen from the screw device side, and FIG. 7 is a partial side view as seen from the rolling device side. Fig. 8a is a partial front view seen from the rolling device side, Fig. 8b is a perspective view showing an example of the fixed state of the vibrator and the rolling plate, and Fig. 9 is viewed from the arrow A-A in Fig. 8a. Cross section, 1st
Figure 0 is an explanatory partial cross-sectional view showing an example of a turning device, No. 11
Figure 12 is a diagram showing an example of a hydraulic control circuit, Figure 13 is a construction state diagram, Figure 14 shows a slope shaping machine at right angles to the hydraulic excavator body. Fig. 15 is a plan view of Fig. 14,
FIG. 16 is a state diagram in which the slope shaping machine is arranged in parallel to the main body of the hydraulic excavator, and FIG. 17 is a plan view of FIG. 16. 15...Hydraulic excavator body, 16...Boom, 17
...Fulcrum, 18...Arm, 19...Fulcrum, 20
...Arm rod, 21...Bracket, 22...Slope shaping machine main body, 23...Rolling device, 24...Screw device, 25...Swivel device, 26...Bucket cylinder , 27... Arm cylinder, 28... Boom cylinder, 29.30... Link, 31, 32.33.3
4... Pin, 35... Hydraulic motor for screw, 3
7... Hydraulic motor for swinging, 39... Rolling plate, 40...
... Vibrator, 41... Frame bracket, 42...
・Frame, 43... Central partition plate, 44... Screw, 45... Blade, 46... Shaft, 47... Entire periphery, 48... Support column, 49... Projection, 50 ... Guide pipe, 51 ... Notch groove, 52 ... Spring, 57.
...Outer ring, 59...Inner ring, 62...Internal gear, 65.
...Pinion gear, 68...Roller chain, 69
．． 70... Directional switching valve, 71... Check valve, 72
．． 73... Variable throttle valve, 78... Switching valve, 80
... relief valve, 81 ... filter, 82 ... gear pump, 83 ... engine, 84 ... hydraulic tank.

Claims (1)

[Claims] 1 Consists of a bracket that is attached to the working arm of a construction machine as part of a quadrilateral link mechanism, and a slope shaping machine body that is attached to the lower part of the bracket via a swivel device,
The main body of the slope shaping machine is composed of a box-shaped frame.
A slope shaping method in which the inside of the box-shaped frame is partitioned by a partition plate, a screw device is disposed on one side of the frame, and a rolling device is disposed on the other side, and the screw device and the rolling device are equipped with the turning device. A slope shaping machine for construction machinery, characterized in that the machine body is rotated to position a screw device and a rolling device.