JPS584123B2 - Paving body holding device for self-propelled paving body cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The applicant has previously proposed a pressure liquid or pressure cutter to solve the various problems of conventional pavement cutter used to remove necessary portions of road pavement materials such as concrete and asphalt. A cylinder that is driven by the pressure fluid or air is erected at a suitable location on the vehicle body equipped with the air generator, and the cylinder is also driven by the pressure fluid or air, and a chisel can be attached and detached. We have proposed a self-propelled pavement cutter with a structure in which a play force attached to a piston is connected to and installed in parallel with a piston, and moves up and down along a guide provided on the vehicle body as the piston moves up and down.
This invention makes it easy to pull out the chisel that has finished cutting when cutting a pavement body using the self-propelled pavement cutter, and also prevents the pavement body from bulging near the cut portion that occurs at that time. This invention relates to a pavement holding device for a self-propelled pavement cutter that has a structure that allows for.

Hereinafter, specific examples of the present invention will be explained based on the drawings.

First, the outline of the self-propelled paving machine, which is the object of the paving body pressing device of the present invention, will be explained using the embodiment shown in Figs. 1 to 3. An oil pump 3 driven by an engine (not shown) installed in the bonnet 2 of the front car body 1 converts oil in an oil tank 4 installed on the rear surface of the front car body 1 into pressure oil, which is used to drive the oil motor and hydraulic cylinder described later. It also serves as the driving force for playing power.

Then, the vehicle operates an operating section 6 installed on a rod-shaped rear vehicle body 5 connected to the center of the rear surface of the front vehicle body 1 while sitting on a seat 7, thereby driving the oil motor 8 to drive the drive wheels. 9, 9 is driven to run on its own, and the vehicle is steered by appropriately operating a hand control stick 11 and a foot control stick 12 of a steering wheel 10 provided on the rear vehicle body 5.

In addition, the pavement strength-tapping device 13 is installed on one side of the rear surface of the front vehicle body 1 of the above-mentioned self-propelled vehicle. A guide 14 is fixed in parallel with the cylinder integrally on the outer surface of the cylinder, and a lower end that moves up and down in conjunction with the expansion and contraction of the cylinder and is slidably fitted on the guide 14 by a roller (not shown). The breaker 16 is equipped with a chisel 15, and the pressurized oil from the oil pump 3 is released by operating the respective levers installed in the operating section 6 in the same way as when a self-propelled vehicle is running. In response, the breaker 16 is activated, and the cylinder itself expands and contracts, thereby cutting the pavement C as shown in FIGS. 2 and 3, and cutting this continuously as the vehicle travels to cut the required portions with the pavement. Make sure to make a cut in the .

Note that the explanation of the operating system of the oil motor 8, the cylinder unit, and the breaker 16 will be omitted here as it is off topic and will be referred to the description in the original application specification.

Next, a paving body pressing device of the present invention, which is the self-propelled paving body cutter device described above, will be described.

In this embodiment, the chisel 15 at the lower end of the guide 14
are mounted on both sides of the guide 14 to be pressed against the paving bodies on both sides of the chisel 15, and as shown in FIG. The left and right connecting pieces 19, 19 have pivots 18, 18 on the inner side of the piece 17, respectively, and the lower ends of the left and right connecting pieces 19, 19 have pivots 20 on both outer surfaces, respectively.
, 20 to form a link structure, and when the presser piece 21 is lifted by a handle portion 21a formed at the rear end, the aforementioned pivot support 18.1
8 as a fulcrum, it is displaced upward as shown by the imaginary line from the state shown by the solid line in FIG.
A locking hole 19a formed at the center of the outer surface of the case 9 engages with a notch pin 22 provided on the mounting piece 17, thereby bringing the case into the folded state.

As shown in FIG. 6, the engagement between the locking hole 19a and the notch pin 22 occurs when the notch pin 22, which is normally elastically projected onto the inner surface of the mounting piece 17 by a compression coil spring 23, engages the connecting piece 19 as the connecting piece 19 moves upward. The compression coil spring 23 is gradually pressed and contracted by the inclined guide notch 19b formed from the end to the locking hole 19a, and when its tip enters the mounting piece 17 and matches the locking hole 19a, It is pressed and protrudes again to be engaged with the locking hole 19a.

Then, when the knob 22a is pulled to retract the notch pin 22 into the mounting piece 17, the notch pin 22 and the locking hole 1
9a is disengaged, the presser piece 21 is displaced downward from the imaginary line as shown by the solid line, and when the connecting pieces 19, 19 are in the vertical position, the lower surface of the presser piece 21 touches the surface of the paving body C. It is set at a position with a slight gap (approximately 5 dragons in the embodiment).

In this embodiment, the guides 14 are provided on both sides of the lower end, but they may be provided on only one side, and the holding length of the holding piece 21 is set to be larger than the cutting width of the chisel 15. .

Furthermore, when the guide 14 is installed on both sides of the lower end as in the embodiment, it is desirable that the gap between both presser pieces 21 and 21 is the minimum that does not interfere with the vertical movement of the chisel 15; The spacing is not limited to the case where a narrow chisel such as a flat chisel is used, but also when a wide round chisel is used, it is necessary to consider an appropriate spacing that will not cause any problems.

Furthermore, the means for folding the presser piece 21 and maintaining the folded state is not limited to the locking holes and notch pins as in the embodiment, but other suitable locking means may be used.

As described above, the paving body pressing device according to the present invention has the mounting pieces 17 fixed to both sides (embodiment) of the chisel 15 at the lower end of the guide 14 or to one side, and the mounting pieces 17 fixed to each upper end.
A presser piece having a link structure by having left and right connecting pieces 19 which are pivotably supported (in the embodiment, pivoted) 18, 18 on both sides, and pivoted (in the embodiment, pivoted) 20, 20 at the lower ends of each of the left and right connecting pieces 19, respectively. 21, and the presser piece 21 is connected to each of the upper end pivot parts 1.
By rotating the left and right connecting pieces 19, 19 upward using the connecting pieces 8, 18 as fulcrums, it moves to the mounting piece 17 side, and by appropriate technical means (in the embodiment, the locking hole 19a provided in the connecting piece 19 and the mounting piece By engaging with the notch pin 22 provided in 17), it is locked with the mounting piece 17 to be in the folded state, and by releasing the lock with the mounting piece 17, each upper end pivot 18.18 can be used as a fulcrum. When the left and right connecting pieces 19, 19 turn downward and become vertical, the lower surfaces of the connecting pieces 19, 19 are in contact with the surface of the pavement C, or are positioned with a slight gap (as in the embodiment). Therefore, when pulling out the chisel from the paving body after cutting the paving body, by leaving the presser piece in the unlocked state as described above,
As a result, the reaction force of the road surface can be received, so that the chisel can be easily pulled out, and at the same time, the paving body does not bulge up at the same time, and the cutting operation of the paving body can be performed smoothly and quickly.

Further, by keeping the presser piece in a folded state, there is no problem with running, and furthermore, the workability can be improved by making the locking means of the presser piece a one-touch structure as in the embodiment. It is of great practical value.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a self-propelled pavement cutter to which an embodiment of the present invention is applied, Fig. 2 is a side view thereof, and Fig. 3 is A-A.
4 is a perspective view of an embodiment of the present invention, FIG. 5 is a side view showing the function of the presser piece, and FIG. 6 is a diagram showing the notch pin and locking hole for locking the presser piece. FIG. 14... Guide, 15... Chisel, 17... Mounting piece, 18... Pivotal support, 19... Connection piece, 19a...
- Locking hole, 20... Pivot support, 21... Holding piece, 22
...notch pin, C...paving body.

Claims (1)

[Claims] 1 A cylinder integrally driven by said pressure fluid or pressurized air is erected at an appropriate location of a vehicle body equipped with a pressure fluid or pressure air generating device, and a cylinder integrally driven by said pressure fluid or pressure air is also driven by said pressure fluid or pressure air. A breaker with a removably attached chisel is connected to the piston and installed in parallel.
and a mounting piece fixed to one side or both sides of the chisel at the lower end of the guide of the self-propelled pavement cutter so that it moves up and down on a guide provided on the vehicle body as the piston moves up and down; It consists of a presser piece that has a link structure by pivoting both sides to the ends of the left and right connecting pieces, each of which has its upper end pivoted on both sides of the mounting piece, respectively. By rotating the connecting piece upward, it moves to the mounting side and locks with the mounting piece by appropriate technical means to be in the folded state, and by releasing the lock with the mounting piece, each upper end pivot When the left and right connecting pieces become vertical by rotating in the F direction using the fulcrum, the r
A paving body pressing device for a self-propelled paving body cutter, characterized in that the surface is configured such that the surface is in contact with the surface of the paving body or is positioned with a slight gap therebetween.