JPS5940181Y2 - Surface scraping machine for fireproof materials, concrete materials, etc. - Google Patents

Description

[Detailed description of the invention] This invention relates to a surface scraping machine for refractory materials, concrete materials, etc., which quickly scrapes the surface of caster materials for concrete walls and gutters in steel plants.

Although the field of use is different from conventional surface scraping machines for fireproof materials, concrete materials, etc., a portable multi-needle chisel with a similar structure has been proposed, for example, in Japanese Utility Model Application Publication No. 1983-54371. be.

This multi-needle chisel device has a main body with a piston that comes into contact with a special cam connected to a motor, a protective cylinder is attached to this main body, and a holder with many impact needles attached and a hammer are installed inside the protective cylinder. The locking tube is housed so that the husband and wife can move back and forth, and a spring is resiliently applied between the retaining portion of the locking tube which is removably engaged with the tip of the protective tube and the holder.

Therefore, since the structure of the chisel tool is such that the holding body is pressed against the hammer by the elastic force of the spring, the impact that travels forward to the holding body due to the impact of the hammer is returned by the elastic force of the spring. This operation causes it to reciprocate.

In other words, since the impact needle is waiting in a free state between the holder and the hammer, the front part of the impact needle must be pressed against the object and the base end of all the impact needles must be pressed against the hammer. , □
It has the disadvantage of not being able to withstand efficient blows.

For example, if the piston makes 2000 blows per minute (the number of blows per minute), the vibration will cause the protective cylinder to vibrate. Approximately 1/3, approximately 700 strokes/minute, is reached, and the remaining 1300 strokes/minute are inactive.

Therefore, the conventional multi-needle chisel device has the disadvantage that it cannot be operated efficiently unless the tip of the impact needle is constantly pressed against the object.

' □This invention eliminates these inconveniences and enables efficient operation, and by selecting an appropriate distance between the target object and the surface scraping machine, the impact force (shaving force can be adjusted). The purpose of the present invention is to provide a surface scraping machine for refractory materials, concrete materials, etc.

In order to achieve the above-mentioned purpose, this invention alternately supplies compressed air in front and behind the piston in the cylinder to cause the piston to reciprocate. A holding cylinder is arranged in series along the holding cylinder, and the rear end of the tappet, which is disposed in the holding cylinder so as to be fully advanced and retractable, is brought into contact with the front end of the piston, which is opened at the rear of the holding cylinder and inserted into the left open part, and, A large number of spike pin holding holes are drilled in the front and back direction in the holder attached to the tip of the holding cylinder, and the spike pin that contacts the front end of the tappet is inserted in a movable manner Km, and is held in front of the stepped part protruding at the rear of the tappet. The space between the inner circumferential surface of the cylinder and the inner circumferential surface of the spike pin holding hole is used as the first air chamber, and the space between the front part of the spikey pin holding hole and the inner circumferential surface of the spike pin holding hole is used as the second air chamber. □The first of these
By supplying compressed air to each of the air chamber and the second air chamber, the tappet and the spiky pin are biased and suppressed rearward.
The piston is made to advance by striking through the striking advance of the tappet obtained by the reciprocating motion of the piston, and the front end of the pipe is arranged along the axis of the piston of the hammer main body and the tappet of the holding cylinder. The pipe is inserted into and removed from the front through an opening made in the holder, and fluid can be supplied or dust can be sucked in through this pipe.

An embodiment of this invention will be described below with reference to the drawings.

Reference numeral 1 in the figure is a hammer body that reciprocates the piston 4 by alternately switching the compressed air supplied to the cylinder 3 forward and backward by means of a valve 2 that utilizes cushion pressure.

A retainer part 6 for holding a large number of spikey pins 5 is connected to the front part of the hammer body 1 along the front-rear direction of the hammer body 1.

The rear part of the holding cylinder 6 is fixedly connected to the front part of the main body 1, and the front part of the piston 4 is inserted into the opening 7 opened in the center of the rear part through the piston liner 8. Insert it.

Inside the retaining slot 6 are a tappet 9 whose rear end abuts the front end of the piston 4 and receives a blow from the piston 4, and a tappet 9 whose rear end abuts the front end of the tappet 9 and receives a blow from the tappet 9. A holder 11 having a plurality of spikey pin holding holes 10 for holding the spikey pin 5 is provided, and the holder 11 is inserted into the front opening of the holding cylinder 6. It is fixed with a retaining ring 12.

The retaining ring 12 is a retaining ring 12 screwed onto the holding cylinder 6.
It is fixed with a set screw 34 for preventing loosening, and this set screw 34 is fixed with a band 35 wound tightly around the circumferential surface of the holding cylinder 6.

The tappet 9 is removed, and the space between the front of the stepped portion 9A protruding at the stepped portion Vc5 of the tappet 9 and the inner circumferential surface of the protection cylinder 6 is used as the first air chamber 1.
4, and the rear piston 4 is constantly biased and suppressed with a slight force by compressed air supplied through the communication passage 23, as will be described later.

Similarly, the spiky pin 5 has a second air chamber 13 in the space between the front of the stepped portion protruded at the rear of the spiky pin 5 and the inner circumferential surface of the holder 11.
The rear tappet 9 is constantly urged and pressed with a slight force by compressed air supplied through the circumferential groove 21 and the compressed air introduction path 20.

That is, the compressed air supplied to the first air chamber 14 and the second air chamber 13 is obtained by dividing a part of the compressed air that causes the piston 4 in the hammer main body 1 to reciprocate, and the pressure is used to divide the compressed air into the stages. The rear end of the tappet 9 is brought into contact with the front end of the piston 4, and the rear end of the spikey bin 5 is brought into contact with the front end of the tappet 9 in a pressing manner through the portion 9A and the stepped portion 5A.

Further, a pipe 15 is inserted and inserted along the axis of the piston 4 of the piston 41 holding the hammer body 1 and the piston 4, and its front end is slightly projected forward from the opening 11A made in the holder 11. At the same time, an injection hole 11 is bored in the blind body 16 or the peripheral surface near the bright end, and a connecting body 1B communicating with the pipe 15 is attached to the rear part of the main body 1.
8A is provided to send in compressed air or water, which is ejected from the tip of the pipe 1S, thereby making it possible to scatter the shavings.

Furthermore, the diameter of the pipe 15 is increased, and a vacuum device is used to collect the shavings into a dust collector, thereby improving the working environment.

The compressed air is fed into the first air chamber 14 as shown in FIG. This is done in a distributed manner from the communication path 23 provided.

In addition, ventilation holes 24A, 24B, and 25 are provided in the holding cylinder 6 and the tappet 9 to facilitate the movement of the tappet 9.
・Cylinder 3 of body 1! /c is provided with an exhaust hole 27 communicating with a compressed air exhaust groove 26 and a mounting hole 28 for fixing the pump body 1 to the support base 30.

Since the holding cylinder 6 is cylindrical, a substantially trapezoidal stabilizing plate 29 is provided at the rear of the main body 1 to prevent it from rolling unstablely during maintenance etc. (see Fig. 4). .

As shown in FIG. 3, the support stand 30 is for attaching the sharpener according to this invention to heavy machinery (not shown), etc., and is pivotally connected to a fixed stand 30A through four supporting bolts 31. and a rotating table 30B.

The rotating table 30B includes a mounting bolt 32 and an arcuate hole 3 so that the sharpener can be fixed from a horizontal position to an appropriate tilt angle.
3 to fix the main body 1.

Next, to explain how to use it, set the mounting bolt 32 of the support base 30 to position the sharpener according to this invention perpendicular to the surface to be machined, and then use the foot valve to supply compressed air supplied via the filter regulator and oiler. A master pulp (both not shown) is fed into the compressed air supply port 22 of the main body 1.

At this time, if necessary, water or air is fed into the pipe 15 which is arranged along the axis of the machine body 1 and protrudes in front of the holder 11 next to the spikey bin 5 to cut the surface. It may be used for cleaning and blowing away the shavings, or it may be connected to a vacuum device (not shown) to suck out the shavings.

To explain the bond in terms of resonance, the compressed air sent from the hammer body 1rc enters the compressed air supply port 22, and is divided between the hammer body 1 and the holding cylinder 6, and the hammer The compressed air supplied to the main body 1 is alternately switched by the operation of the valve 2 using cushion pressure, enters the front and rear of the piston 4, causes the piston 4 to reciprocate, and causes the tappet 9 to move.
to hit.

On the other hand, the compressed air that entered the holding cylinder 6 is
, is supplied to the first air chamber 14 through the holding cylinder 6, and the step 9AK of the □tappet 9 constantly presses the tappet 9 itself against the piston 4 with an appropriate force.

Further, the compressed air accumulates in the circumferential groove 21 of the holding cylinder 6, passes through the compressed air introduction path 20 of the holder 11, is supplied to the second air chamber 13, and is pushed by the stepped portion 5AK of the spiky pin 5 into the spiky pin 5 itself. The tappet 9 is constantly pressed with an appropriate force.

Therefore, the tappet 9 that has been hit by the reciprocating piston 4 transmits the impact to the spike bin 5, and the spy bin 5 moves forward against the pressing force of the second air chamber 13. Hit object A, the concrete surface.

After the impact, the spikey bottle 1d immediately retreats due to the pressing force of the second air chamber 13, comes into contact with the front end of the tappet 9, is struck again, and moves forward, so that each spikey bottle 5 repeats this process.

At this time, as shown in FIG. 6, the tappet 9 is always set to the striking position of the piston 4, and the compressed air sent into the first air chamber 14 causes the deep part of the holding cylinder 6, that is, the piston 4 to move. is pressed with appropriate pressure.

The tappet 9, which received the blow, resists the pressing force by the impact, moves forward by 1, and swings the spiky bottle 5 with its vine a, □
The compressed air in the first air chamber 14 immediately returns the book to its original position, and the process is repeated by being hit again.

The impact force against the object A is the strongest when the spiky pin 5X is in contact with the tappet 9 and receives the impact. Since the impact force gradually weakens during forward motion, the stepped portion 5A of the spiky pin 5 becomes spiky.
The spiky pin 5z that is close to the front of the gun holding hole 10 has the weakest impact force, and the spiky pin 5Y that is in the middle of forward movement has the weakest impact force. Become.

In this way, by making the striking force received by the tappet 9 much larger than the pressing force applied to the second air chamber 13 of each spiky pin 5 against the stepped portion 5A, the spiky pin 5 The spiky pins 5 fly forward with force and strike the target object A, and when the momentum stops, they are immediately retracted by the pressing force. Thing A
It hits the surface.

Therefore, for example, the surface of the caster material of a gutter in a concrete wall or a steel factory can be scraped off.

As mentioned above, this device allows the piston 4 to reciprocate. A holding cylinder 6 is provided in the front part of the main body 1 in series along the front-rear direction of the main body 1, and inside this holding cylinder 6. The end of the tappet 9ψ, which is arranged to move forward and backward, is brought into contact with the piston 4, and the spiky pin 5, which is in contact with the front end of the holder TIRCs attached to the tip of the holding cylinder 6, is inserted through the tappet 9 so that it can move forward and backward. Compressed air is supplied to the first air chamber 14 with the stepped portion 9A at the rear and the second air chamber 13 with the stepped portion 5A at the rear of the spiky pin 5 to move the tappet 9 and the spiky pin 5 rearward. Since the force is suppressed and the spiky pins 5 are moved forward by impact through the impact advancement of the tappet 9 obtained by the reciprocating force of the piston 4, each spiky pin 5 can be efficiently moved forward and backward. It is a ball that can be hit with
The cutting force can be easily adjusted.

That is, since the tappet 9 and the spiky pin 5 can be constantly pressed in the direction of the hammer body 1 by compressed air, the spiky pin 5 can be brought into contact with the tappet 9.
The impact by the piston 4 can be efficiently transmitted to the snowboard and squeeze bin 5 via the tappet 9.

Therefore, compared to the above-mentioned conventional multi-needle chisel device in which only about 1/3 of the total number of strikes of the striking machine body can be transmitted to the striking needles, more efficient strikes can be performed.

As shown in Fig. 6, by appropriately selecting the distance between the holding cylinder 6 and the object A, such as the surface of caster material for a gutter hung on a concrete wall or steel mill, the striking force (shaving force) can be reduced. It is possible to make adjustments.

That is, when the distance between the front end of the spiky pin 5 and the object A is close, as in the case of the spiky pin 5X, the impact force obtained by the tappet 9 is still strong, so the maximum impact force is obtained. If the distance between the front end of the spiky pin 5 and the object A is large, the striking force obtained by the tappet 9 is weakened, as in the case of the spiky pin 5z. Similarly, with six Spiky Pins 5YK, a medium impact force can be obtained.

The effect of being able to adjust the impact force in this way is that, like the conventional multi-needle chisel device, a large number of impact needles are held together by one holder and a spring and pushed back, and a piston is moved in a cylinder. This cannot be achieved by simply reciprocating the piston by switching compressed air through movement.

Furthermore, the space between the front of the stepped portion 9A projected at the rear of the tappet 9 and the inner circumferential surface of the holding cylinder 6 is defined as a first air chamber 14,
The space between the front of the step 5 protruding at the rear of the spiky pin 5 and the inner surface of the spiky pin holding hole 10 is left as a second air chamber 13, and these first air chamber 14 and second air chamber Since compressed air is supplied to the 13th husband and the tappet 9 and the spiky pin 5 are biased and suppressed backward, it is not due to the repulsive force of a spring as in the conventional case, and also like the piston of an air cylinder. This is not done by switching the introduction of compressed air, but the compressed air #C can be used to push back each spikey pin 5.

Not only that, it is possible to keep dozens of spikey pins 5 in constant contact with the tappet 9, which reduces the number of idle spikey pins 5 and allows each spikey pin 5 to operate efficiently. In addition, since the spiky pin 5 is always pushed back with a constant force by the action of compressed air, its reciprocating operation can be easily achieved.

Further, even when the tappet 9 and the spiky pin 5 are moved forward by being hit by the piston 4, the holding cylinder 6 has a stepped portion 9.
In addition, the stepped portions 5A are not in direct contact with the holder 11, and the compressed air in the first air chamber 14 and second air chamber 13 formed by the stepped portions 9A and 5A is slightly compressed. It is highly durable as it acts as a cushion.

Furthermore, the front end of a pipe 15 disposed along the axes of the piston 4 of the hammer main body 1 and the tappet 8 of the holding cylinder 6 is inserted and removed forward through the opening 11A of the holder 11VC, and the pipe 15 By making it possible to supply fluid or suck in dust, the cutting surface can be cleaned by blowing and supplying fluid such as water or compressed air from the tip of the holding cylinder 6 to the front of the holder 11, and the rear part of the vibrator 15 can be vacuumed. By connecting to the device, dust such as shavings can be inhaled, so the shavings will not be scattered and the working environment will be improved.

As explained above, according to this invention, it is possible to simplify the device configuration, reduce impact loss, and perform efficient cutting work, and improve durability.Moreover, it is possible to adjust the cutting force. It is easy to perform, and has various effects that are extremely useful in practice.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a #;Fr side view of the main part, Fig. 2 is a front view of the same, Fig. 3 is a side view of the whole, and Fig. 4 is a rear view of the same. , FIG. 5 is a plan view of the same, and FIG. 6 is a sectional view of a main part in a state of use. A...Object, 1...Hammer body,
2-...Pulp, 3--...Cylinder, 4
...Zeston, 5...- Spiky Pin,
5A...Stepped part, 5X...Spike pin, 5Y...Spike pin, 5z...
・Spike pin, 6... Holding cylinder, I...
・・Opening part, 8・・・Zeston liner, 9・・・・
... Tappet, 9A ... Stepped section, 10 ...
...Spicy pin holding hole, 11...Holder 11A...Opening, 12...Retaining ring, 13...Second air chamber, 14...・・・・・・
1st air chamber, 15...pipe, 16...
・Blind body, 17... Injection hole, 18... Connection body, 18A... Packing, 20... Compressed air introduction path, 21...・Peripheral groove, 22...
・Compressed air supply port, 23...Communication path, 24A・
...Vent hole, 24B...Vent hole, 25.
...Vent hole, 26...Exhaust groove, 27...
...Exhaust hole, 2B...Mounting hole, 29...
... Stabilizer, 30... Support stand, 30A...
...Fixed stand, 30B... Rotating stand, 31...
... Pivot port, 32 ... Mounting bolt, 33
......Circular long hole, 34...Set screw,
35...Band.

Claims (1)

[Scope of utility model registration request] Compressed air is alternately supplied to the front and rear of the piston in the cylinder to cause the piston to reciprocate. A holding cylinder is connected to the front part of the hammer body along the front-rear direction of the hammer body,
The rear end of the tappet, which is movable in the holding cylinder, is brought into contact with the front end of the piston, which is inserted through the opening at the rear of the holding cylinder. - A pin holding hole is drilled in the front and back direction, and a spiky pin that abuts the front end of the tappet is inserted therethrough so as to be able to move forward and backward, so that there is a space between the front of the step formed at the rear of the tappet and the inner circumferential surface of the holding cylinder. is defined as a first air chamber, and a space between the front part of the protruded step part and the inner circumferential surface of the spikey pin holding hole is defined as a second air chamber, and these first air chambers are Compressed air is supplied to each of the second air chambers to bias and suppress the tappet and the spikey pin rearward, and the pikey pin is moved forward by impact through the impact advancement of the tappet obtained by the reciprocating movement of the piston. Furthermore, the front end of a pipe disposed along the axes of the piston of the hammer main body and the tappet of the holding cylinder is inserted and removed forward through the opening drilled in the holder, and this pipe is used to supply fluid or remove dust. A surface scraping machine for fireproof materials, concrete materials, etc., which is characterized by being able to perform suction.