JP2000141295A - Drilling tool for removal liquid from waste vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy-saving drilling tool capable of easily drilling a bottom plate of a fuel tank of a waste vehicle by slight force. SOLUTION: It is a drilling tool for liquid removal for drilling a hole on a fuel tank of a waste vehicle and is furnished with a main body part 3 and a hook 19 supported on the main body part 3 so as to retreat to a non-engaged position as it is pressurized by a tank drilling part edge part in the middle of advancing in the drilling direction and so as to retreat the drilling part edge part by being engaged with the drilling part edge part in the middle of retreating in a direction reverse to the drilling direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid drainage drilling tool used for separating and recovering residual liquid such as fuel from a fuel tank of a vehicle such as a private car to be discarded (discarded vehicle). .

[0002]

2. Description of the Related Art In order to safely and reliably recover liquid remaining in various tanks of a waste vehicle, the present applicant has proposed a novel fuel drain device (see Japanese Patent Application Laid-Open No. 10-18929). This device basically comprises a drilling tool for drilling a hole in a bottom plate such as a tank, a device for moving the drilling tool up and down, and a container for receiving liquid flowing out after drilling.

FIG. 7 shows an example of a drilling tool for draining the liquid. In the illustrated drilling tool having a tapered reamer shape, a blade portion following a rod-shaped shank portion has a substantially conical shape as a whole, and its cross section is formed of a shape such as shuriken or gold rice sugar. The ridge forms the cutting edge. According to this drilling tool, as shown in FIG. 8, a hole can be reliably formed in a bottom plate such as a tank at the time of drilling.

[0004]

However, the drilling tool has the following disadvantages. First, since the cutting blade portion is not sharp and a large number of blades push the tank bottom plate at the same time, the resistance when piercing the bottom plate of the fuel tank is large, and the size of the vertical motion device (cylinder) is large. And the driving air pressure or hydraulic pressure must be considerably high.

[0005] Secondly, since the pierced tank bottom plate enters inside of the outer diameter of the cutting tool by springback after the perforation, a very large force is required when lowering the cutting tool. For this reason, the vertically moving device must be firmly installed and fixed on the floor surface, and the whole device may be very complicated. Third, since a raised portion is formed over the entire circumference of the drilled hole, the residual liquid does not completely escape and remains in the tank.

Fourth, it is difficult to manufacture the cutting tool, and the manufacturing cost is thereby increased. Then, an object of the present invention is to realize a rational drilling tool for drainage and a drainage device which can effectively solve such conventional inconveniences.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a drilling tool for draining a hole in a portion to be drilled containing a residual liquid of a scrapped vehicle. The main body and the main body are supported so as to be pressed by the edge of the perforated portion and retracted to the non-engagement position while being advanced in the drilling direction, and are retracted in the direction opposite to the drilling direction. And a hook supported so as to engage with the edge of the perforated portion and retreat the edge portion of the perforated portion.

Preferably, the main body portion has a base portion and two ridge-shaped cutting blade portions formed by obliquely cutting and sharpening a corner of a long member having a substantially V-shaped cross section. A perforation mounted thereon. Preferably, a through hole is formed at a substantially central portion of the V-shaped internal recess of the perforated portion, and a hook may partially protrude from the through hole. Preferably, the protruding protruding end of the hook is movable between the protruding position and a disengaged position retracted inside the perforated portion. Preferably, a sharp blade portion is provided on the retreat surface side of the protruding end of the hook.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a main part of a liquid draining device 1 for separating and recovering fuel remaining in a fuel tank of a waste vehicle according to the present embodiment. In order to be able to work in a standing position on the surface (FL), it is placed inside a steel gantry with a correspondingly higher level than the floor and equipped with a top surface on which waste vehicles can be loaded. Normally, a scrapped vehicle is placed on the upper surface of the gantry by a forklift, but other loading devices such as a crane may be used.

The liquid draining apparatus 1 comprises: (1) a drilling tool 3 for making a fuel draining hole from the lower side of the gantry into a fuel tank on the bottom of the body of the discarded vehicle; and (2) an upper part for accommodating the drilling tool 3. , A first driving device 7 capable of vertically moving the drilling tool 3 in the vertical direction, and (4) moving the fuel receiving container 5 together with the first cylinder device 7 as a whole. And (5) a guide device 11 that can support and guide these elements (1) to (4) so as to translate in two orthogonal horizontal directions (XY directions). Including. The following describes these elements in detail.

{Drilling Tool} As shown in FIGS. 2 and 3, the drilling tool 3 includes a cylindrical base 13 which is screwed into and fixed to an operating portion (cylinder rod) 7a of a first driving device 7.
A perforated portion 15 which is integrated on the base portion 13 by welding and has a V-shaped cross section (considering ease of manufacture) (see FIG. 3), which is formed by obliquely dropping and sharpening the corners; A hook 19 rotatably mounted via a pin 17 inside the perforated portion 15; and a metal, for example, an alloy tool steel or a high-speed steel. To form a predetermined hardness to impart durability and wear resistance.

As shown in FIG. 4, the perforated portion 15 is formed as a single blade as shown in FIG. 4 in which the oblique ridge portions 15a on both sides of the V-shape are sharp (30 °). The V-shaped corner 15b is also formed so as to form a blade, and when these blades 15a and 15b cut a metal plate (in this embodiment, a bottom plate of a fuel tank) as an object, Care is taken so that the part to be cut is turned up in a triangular shape and the cutting resistance at that time is reduced.

At a substantially central portion of the V-shaped internal recess of the perforated portion 15, a vertically long through-hole (window) penetrating in the horizontal direction is formed, and above the through-hole, crosses the through-hole. A pin hole (about 6 mm) is formed so that the hook mounting pin 17 can be fitted. Hook 1
As shown in FIG. 5, 9 is a plate member having a C shape as shown in FIG. 5, and is attached to the above-mentioned portion of the perforated portion 15 so as to slightly swing about the axis of the pin 17 by its own weight. The state where the hook 19 is normally located under its own weight is a state (position) in which the protruding end 19a protrudes from the through hole of the perforated portion 15 as shown by a solid line in FIG.

The hook 19 is formed so that the lower surface portion of the tip 19a forms a sharp blade portion 19b, and the root side of the tip is largely cut off (a notch is formed), so that the hook 19 is hooked (hook action). ) Is configured to function well. {Fuel Receiving Container} The fuel receiving container 5 is preferably formed of a transparent or translucent resin cylindrical material so that the inside can be seen (visible). On the upper side of the fuel receiving container 5, an annular elastic seal member 23 capable of hermetically sealing a ring-shaped contact portion between the opened upper portion of the fuel receiving container 5 and the fuel tank is attached. This elastic sealing member 23
It is made of a bellows-like rubber member having a multi-stage constricted portion that can be extended and contracted at a high stroke.

An elastic seal member 23 is provided in the fuel receiving container 5.
When the drilling tool 3 pierces the fuel tank during the hermetic sealing by the piercing, the inert gas (specifically, carbon dioxide gas, nitrogen gas, or the like) is injected into the pierced portion to fill the pierced portion with a spark (ignition of residual fuel). ), An inert gas supply device including an inert gas source is provided. Further, the fuel receiving container 5 is provided with a fuel collecting device for separating and collecting the fuel that falls and accumulates therein into gasoline and light oil.

{First drive device / second drive device} Both the first drive device 7 and the second drive device 9 are, for example, pneumatically operated cylinder devices. The main body of the first driving device 7 is integrally fixed to the fuel receiving container 5, and an upper operating portion thereof (that is, the tip of the cylinder rod 7 a).
, A drilling tool 3 is screwed, and the drilling tool 3 is moved up and down so as to enter and exit vertically from a fuel receiving container 5 (upper opening). The second driving device 9 moves the entire first driving device 7 up and down.

{Guiding Device} The guiding device 11 that supports and guides the second drive device 9 so as to be able to translate in two orthogonal (XY) directions is provided in the (a) X direction, that is, a gantry (or a scrapped vehicle). ) A pair of mutually parallel X-rail portions (C-shaped steel) 31 fixed to the floor surface (FL) so as to extend in the longitudinal direction (left-right direction in FIG. 1), and (b) traverse the X-rail portion 31 at right angles. Y-rail (C-shaped steel) 33 and (c) Y-rail on the upper surface of Y-rail 33 so as to be able to move arbitrarily in the X-direction in this orientation.
A slide base 35 that can be arbitrarily moved in the direction.

The X rail section 31 and the Y rail section 33
It engages via a plurality of free rollers 37 provided on the rail portion 33 so as to be relatively movable. The Y-rail portion 33 and the slide base 35 are movably engaged via a plurality of free rollers 39 provided on the slide base 35.
The lower part of the second driving device 9 is fixed to the upper part of the slide base 35.

Hereinafter, the operation and effect of the liquid draining device of the present embodiment having such a configuration will be briefly described. First, the operator moves the first and second driving devices 7 and 9 in the X and Y directions to a position directly below the bottom surface of the discarded vehicle mounted on the gantry, which position corresponds to the position of the fuel tank.

Next, the second driving device 9 is operated to raise the first driving device 7 (fuel receiving container 5) as a whole,
The elastic sealing member 23 on the upper part of the fuel receiving container 5 is elastically contacted with the fuel tank bottom plate. Next, the first driving device 7 is operated to raise the drilling tool 3. At the same time or before that, an inert gas is injected and filled into the inside of the elastic seal member 23 (a hole in the fuel tank) by an inert gas supply device to suppress spark generation.

A hole is formed in the bottom plate of the fuel tank due to the rise of the drilling tool 3, but the rise of the drilling tool 3 is stopped or delayed while the hole being formed is small, and an appropriate amount of fuel flows out of the fuel tank. While storing this in the receiving container 5, it is determined whether the fuel is gasoline or light oil. Next, the drilling tool 3 is further raised to cut the tank bottom plate deep. At this time, the hook 19 of the drilling tool 3 (piercing portion 15) is pushed down on the drilling tool 3 because its protruding end 19a is pushed down by the tank bottom plate portion to retract (retreat) to the angular position shown by the broken line in FIG. Dynamic movement is not hindered.

When the perforated portion 15 (cutting portion 15a, 15b) rises by severing the tank bottom plate, the oblique ridge line portion (cutting portion) 15a of the V-shaped edge of the perforated portion 15 forms the tank bottom plate and the triangular shape. The two sides are cut off and turned up in a triangular shape. It was experimentally confirmed that the cutting resistance at this time was much smaller than that of the conventional drilling tool.

Next, when the tip 19a of the hook 19 enters the inside of the tank, the hook 19 rotates and returns to the normal position shown by the solid line in FIG. The drilling tool 3 is then turned around and pulled down. At this time, the hook 19 returned to the original position
Is hooked on the tank bottom plate portion whose tip 19a is turned up and pushes it downward. On this occasion,
There is a blade portion 19b on the lower surface of the protruding end, and it retreats while tearing the tank bottom plate portion, so that resistance is small.

Through the above series of steps, a hole (opening) as shown in FIGS. 6A to 6C is finally formed in the tank bottom plate. Around the hole, a raised part is formed at the same time as the upper part, and at the same time, a part that is pulled down is always formed, so that the residual fuel inside the tank is almost completely contained in the fuel receiving container below the tank. Can fall and flow into

Thus, the residual fuel in the fuel tank is
The fuel is reliably recovered by the corresponding fuel recovery device (recovery tank) via the fuel receiving container and the corresponding pipe. As described above, the most significant feature of the drilling tool according to the present embodiment is that a portion that is lowered downward is formed around the opening formed as shown in FIG. 6, and the liquid in the tank does not remain, that is, , It is easy to leak.

Needless to say, the concept of the drilling tool of the present invention is not limited to the above-mentioned type of liquid removing device, but can be applied to various types of devices.

[0027]

As described above, according to the present invention,
The above-mentioned disadvantages of the related art are effectively and rationally solved, and the drilling operation can be performed very simply, easily, and quickly.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a liquid draining device.

FIG. 2 is a longitudinal sectional view of a drilling tool.

FIG. 3 is a top view of the drilling tool.

FIG. 4 is a view showing a perforated portion alone.

FIG. 5 is a diagram showing a hook alone.

FIG. 6 is a view showing a state where a tank bottom plate is perforated.

FIG. 7 is a view showing an example of a conventional drilling tool.

FIG. 8 illustrates a typical drilling stage of a tank bottom plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drainage device 3 ... Drilling tool 5 ... Fuel receiving container 7 ... 1st drive device 9 ... 2nd drive device 11 ... Guide device 13 ... Base 15 ... Perforated part 17 ... Pin 19 ... Hook 23 ... Elastic sealing member 31 ... X rail part 33 ... Y rail part 35 ... Slide base 37, 39 ... Free roller

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshimi Kimura 831 Amagaya, Koyama City, Tochigi Prefecture Komatsu Green Town 17 (72) Inventor Noriyuki Yamaguchi 6-2-6 Chuo, Yamato City, Kanagawa Prefecture F term (reference) 3C060 AA16 BA06 BB19 BE03 BE09 3D038 CA04 CA30 CB01 CC08

Claims (5)

[Claims] 1. A drilling tool for draining a hole in a portion to be pierced containing a residual liquid of a scrapped vehicle, wherein the piercing tool has a body and a body is moving forward in a piercing direction. Is supported so that it can be retracted to the non-engagement position by being pressed by the edge of the pierced portion, and engage with the edge of the pierced portion while retracting in the direction opposite to the piercing direction. And a hook supported so that the edge portion can be retracted. 2. The main body portion has a base portion and two ridge-shaped cutting blade portions such that corners of a long member having a substantially V-shaped cross section are obliquely dropped and sharpened. The drilling tool according to claim 1, further comprising: a drilling part attached to the drilling tool. 3. The perforation according to claim 2, wherein a through hole is formed at a substantially central portion of the V-shaped internal recess of the perforation portion, and a hook can partially protrude from the through hole. tool. 4. The drilling tool according to claim 3, wherein the protruding protruding end of the hook is movable between the protruding position and a disengaged position retracted into the perforated portion. 5. The drilling tool according to claim 4, wherein a sharp blade portion is provided on a retreat surface side of the protruding end of the hook.