JPS62284885A - Self-propelling type boring machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a self-propelled boring machine for boring concrete walls of tunnels such as pressure water pipes and spillways.

[Conventional technology]

Generally, the inner walls of pressure water pipes and waterways in power plants are made of concrete, but as the concrete wall nears the end of its useful life, core samples are taken by boring the concrete wall at predetermined intervals, and the state of deterioration of the concrete can be assessed. We are investigating the condition of the rock and ground surrounding this area.

Conventionally, this kind of boring work involves driving an anchor into the concrete wall of a tunnel, fixing the support of the boring machine to this anchor, attaching a core tube to the tip of the electric motor attached to this support, and then driving the core tube. Attach a cylindrical core cutter made of diamond to the tip. Operate the generator in this state,
The electric motor is rotated by the generated alternating current electricity, the core cutter is pressed against the concrete wall, the core tube is introduced, and the sample is collected.

However, with the conventional method, the boring machine and generator are transported to the Kf hole site and the anchor is driven there, and it takes more than 30 minutes to drive the anchor, which requires a lot of time and effort in preparation work. Ta. Especially when the inner diameter of the tunnel is large and you are drilling at high places such as the ceiling,
There was also the problem that scaffolding had to be erected, and assembly and disassembly were time-consuming. Moreover, the boring machine had the disadvantage of poor workability because the core tube was pushed in manually and the length of the core tube that could be used was short.

In addition, the pressure water pipe has a small inner diameter of 2 to 7 m, and a length of 7 to 7 m.
Some of them are as long as 8 km, making it difficult to transport the equipment, and poor ventilation reduces the amount of CO generated by the generators.
There were also accidents in which workers were poisoned by the gas, which was dangerous.

[Problem that the invention seeks to solve]

The present invention is capable of self-propelled through tunnels to the site, unlike conventional manual boring machines, and can automatically drill long holes without requiring preparatory work such as assembling scaffolding or driving anchors on site. In addition to being excellent in performance, the fur cutter uses battery power as its driving source.

The object of the present invention is to provide a self-propelled boring machine that generates CO gas even in narrow tunnels and has an excellent work environment safety.

[Means for solving problems]

The present invention includes a tire-driven vehicle body, a support mechanism installed on the vehicle body that can be tilted and rotated in all directions by hydraulic pressure, and a feed boom that is attached to the tip of the support mechanism so as to be movable forward and backward. A hydraulic motor for drilling a hole, a core tube attachment part attached to the tip of the hydraulic motor, a cutter steady rest provided at the tip of the feed boom through which the core tube passes and supports it, and the hole drilling. The first aspect of the present invention is a self-propelled boring machine characterized by comprising a hydraulic pump that drives a hydraulic motor, and an electric motor that drives this hydraulic pump using a battery power source.

Furthermore, the present invention provides a second self-propelled boring machine characterized in that, in the above-mentioned self-propelled boring machine, a wire with a weight at the tip is wound around a hydraulic motor ear winding wheel that moves on the feed boom. This is the gist of the report.

[For production]

The present invention moves by itself to the site in the tunnel, and at the site, the feed boom at the tip is set in any direction and angle by a support mechanism driven by hydraulic pressure, and the feed boom is movably supported. Attach a core tube and a core cutter made of diamond to the hydraulic motor for drilling. In this state, the electric motor is rotated by battery power, which drives the hydraulic pump.
The hydraulic motor for drilling is driven by the obtained hydraulic pressure, and the core tube is inserted into the cutter steady rest to rotate the core cutter while preventing swing. At the same time, a hydraulic motor for drilling is moved forward on the feed boom using hydraulic pressure or the weight of a heavy truck, and a core cutter is used to drill the hole.

〔Example〕

Embodiments of the present invention will be described below in detail with reference to the drawings.

In the figure, / is the vehicle body, and eight 6-tires 2 are attached to the frame 3, four on each side, and the driving force of the diesel engines is transmitted to all wheels by a chain, resulting in all-wheel drive.

On the left is a support mechanism installed at the rear of the vehicle body.
B are connected in a link form, and a hydraulic cylinder KA% is connected to these.
gB is connected, and an upper glue boom 7BK and a feed boom de are movably attached and are moved by a hydraulic cylinder gC.

A hydraulic motor 1 for drilling is installed on the top of the feed boom.
0 is movably supported using the feed boom de as a guide rail. A sprocket (/ /A//B) is provided at the tip and rear end of the feed boom, and a chain // is wound around this sprocket. Both ends of the sprocket are connected to the lower part of the drilling hydraulic motor 10 to drive the chain. The feed boom 9 is moved by the feed boom 9.

Further, the shaft of the hydraulic motor 10 for drilling is connected with the mounting part /3 of the core tube /2, and the core tube /3 is connected to the shaft of the hydraulic motor 10 for drilling.
2 are screwed together, and a cylindrical core cutter/l made of diamond is attached to the tip.

/S is a cutter steady rest attached to the tip of the feed boom 9, which has a three-way tightening structure as shown in FIG. This cutter 1 stop/S has three cams/7... arranged at equal intervals inside a ring-shaped case/6.
Each bottle/g... is rotatably supported. A ring/9 is provided so as to be in sliding contact with the surface of the cam/7..., and the ring/qK has pins 20... protruding from three places. By rotating the levers 2 which are inserted into the long holes 21 formed in... and attached to the ring 19, the cams /7... rotate inward to support the core tube /λ. It is supposed to be done.

The sprocket //B that drives the chain // is supported by a rotating shaft λ3 as shown in FIG. 4, and a wire winding wheel 26 is coaxially connected to one end of the rotating shaft λ3. . 2'1 is a hydraulic motor, which is attached to one end of another rotating shaft 29 provided below and parallel to the rotating shaft 23, and this rotating shaft 9 is connected to the upper rotating shaft 23 via the left side of the clutch 2. It is connected.

The clutch 2S pivotally supports the sprocket //B and the wire take-up wheel 26 by slidably attaching a gear 27A to a rotating shaft 2q connected to a hydraulic motor 2'l and operating a lever 2g. It is adapted to engage and disengage from the other gear 27B attached to the rotating shaft 23. Further, the wire winding wheel 26 is fixed to the rotating shaft 3 by a retaining screw 30, and is configured as a trap so that it can rotate freely by loosening the retaining screw 30.

Also, the wire 3 wound around the wire winding wheel = 6
7 is guided by a pulley 32 provided at the tip of the feed boom 9, and a weight 33 is suspended from the tip.

31I is a battery installed in the vehicle body, which is connected to an electric motor 35 installed at the rear of the vehicle body.
Furthermore, the output shaft of this electric motor 35 is connected to the hydraulic pump 3B.

This hydraulic pump 36 is connected to the hydraulic cylinder gA-EC of the support mechanism 3 and the drilling hydraulic motor 10 through a high-pressure hose (not shown). It is connected to the tin rocket drive hydraulic motor 2q, etc., and sends hydraulic pressure.

37 is the driver's seat, and as shown in Figure 1, there are drive levers 3g, 3g for the left and right tires, and a brake 3qA.
and a clutch 1IOA are provided. Further, a support pipe 4t/ is provided in a protruding manner in front of the driver's seat 37, to which the driver's seat 37 can be detachably attached. Further, as shown in FIG. 5, the brake jqA is connected to the brake 39B via the crank arm 12, and the clutch 1IOA is connected to the clutch 10BK via the crank arm 3, so that they are interlocked. That is, the brake 39B and the clutch IOB are installed at two locations at the tip of the vehicle body, crossing the positions of the brake 39A and the clutch 4tOA.

In addition, the output shaft of the diesel engine that drives the tires is fitted with a belt attached to the front of the vehicle body, as shown in Figure 2. It is connected to the hydraulic pump 4t3 via a cable, so that the hydraulic pumps + and 1 can also be driven by the rotational force of the engine.

In the figure, lI6 is an outrigger and 14'7 is a light.

Next, the operation of the self-propelled boring machine having the above configuration will be explained.

When boring tunnels with small inner diameters and long distances, such as pressure water pipes, a worker is seated in the driver's seat 37.
It drives itself to the site inside the tunnel. The power at this time is driven by a diesel engine, and since the tire is all-wheel drive, it has great climbing power and stability, so it can run even in circular tunnels.

When arriving at the site and drilling holes horizontally on the tunnel wall,
Stop the engine, turn on the power switch of the battery 31I, operate the motor 35, and rotate the hydraulic pump 36. Operate this control lever (not shown) to
After the actuator 6 is extended to stabilize the vehicle body, the hydraulically driven turntable 6 is rotated to rotate the support mechanism 3 by 90 degrees.

After this, extend the piston of the hydraulic cylinder gA1gq, raise the lift booms A and '7B, and raise the feed boom A.
q is made horizontal as shown in FIG. 6 and raised to a predetermined height. Next, extend the piston of the hydraulic cylinder (C) to extend the beam (S7) and bring the tip of the core cutter (D) into contact with the tunnel wall surface (G).

Separately, the lever 2 of the cutter steady rest/3 through which the core tube/2 passed the page. ．． When 2 is moved (9) as shown by the arrow in Fig. 3, the ring /q with protruding pins rotates, and this pin 20 slides through the elongated hole of the cam /7. Then, the cams /7... rotate as shown by the imaginary lines to narrow the inner diameter and support the core tube /7 from three sides.

Separately from this, the wire take-up wheel 2B is disconnected from the rotating shaft 23 by loosening the retaining screw 30 shown in FIG. 4, and the wire take-up wheel 2B is prevented from rotating.

After that, when the hydraulic motor 10 for drilling is rotated, the core tube screwed onto the tip of the mounting part 3 will stop the cutter steadying. - It is supported and rotated while preventing runout.

Next, as shown in FIG. 4, with the persimmon u7A of the clutch 25 and the gear 27B engaged and the clutch 25 engaged, the hydraulic motor Yuhiro is rotated.aThe rotational force of the rotating shaft 2q connected to this rotates the clutch λS. The signal is transmitted to the rotating shaft=3 via. At the same time, the sprocket //B rotates, the chain // wound around it also rotates, and the drilling hydraulic motor 10 connected to both ends of the chain // moves forward over the feed boom. .

As a result, the core cutter/g moves forward by hydraulic pressure together with the rotational force of the powerful hydraulic motor 10, and bites into the concrete wall surface S while rotating.

While watching the hydraulic pressure meter, stop the rotation of the hydraulic motor 2 when the core cutter bites into the concrete wall and the pressure drops.

Thereafter, the wire winding wheel 2B is rotated freely to adjust the height of the weight 33 from the ground, and then the holding screw 30 is tightened to fix it to the rotating shaft 23. After this, clutch 23
When the gear core B is disengaged by rotating the lever 2g, the wire 3/ is pulled by the weight of the weight 33 suspended mK from the end of the wire 3/, and as a result, the wire is pulled from the wire winding wheel 2 B. 37 is let out and rotates. This rotational force rotates the rotation axis λ3 and rotates the sprocket //B connected thereto.

Along with this, the chain // rotates, the drilling hydraulic motor 10 moves forward, and the core cutter /lI bites further. That is, since the core cutter puffer moves gradually forward due to the weight of the weight 33, the expensive core cutter/lI made of diamond is less consumed than the method of pushing in with a large force using hydraulic pressure. After drilling the hole for the length of the core tube/2 in this way, if you set it in advance so that the weight 33 reaches the ground exactly, the weight 33 will reach the ground even when the operator is not looking. , the wire take-up wheel 26 stops and the chain/
The feeding of / is stopped, and the j arc cutter 74t only rotates without rotating. In this state, a new core tube/2 was connected, and the wire 3/ was wound back to the winding wheel λB by the length of the core tube/2.
If you raise the heavy cylinder 33 and restart the operation, the core tube /, 2. It can advance by the length of and then stop automatically again.

By adding core tube /= in this way, it is possible to drill a hole of more than 30 m, and moreover, core tube /2
In the past, only short lengths could be used because they were manually operated, but with the present invention, lengths of 2 m or more can be used, and workability can be greatly improved.

Also, when drilling a hole in the ground of a tunnel, as shown in Figure 7, by extending the piston of the hydraulic cylinder &A, the tip of the feed boom will point downward.
Holes can be drilled by the same action as described above.

In addition, when drilling a hole in the ceiling of a tunnel, rotate the turntable 6 180 degrees, extend the piston of the hydraulic cylinder gB, and stand the upper lift boom 7B upright, so that the tip of the tweed boom de You can face upwards and drill holes in the ceiling.

Therefore, the anchor can be immediately set as in the conventional manual method. Also, conventionally, two.

Since a generator driven by a generator was brought to the site and the boring machine was driven by alternating current, there was a risk of CO gas poisoning, but since the present invention uses a battery power source, there is no problem of gas generation.

In addition, conventional boring machines use generated alternating current to
The υ core cutter was rotated by an AC electric motor, but in the present invention, a DC electric motor 3 with high torque is used.
5, and a core cutter/l with a hydraulic motor 10.
Since the hole is drilled by rotating it, a large amount of output can be obtained.

When the drilling in the tunnel is completed and the site is to be pulled up, the driver's seat 37 is set on the support pipe lI/ as shown by the imaginary line in FIG. As viewed from the driver's seat, as shown in FIG. 5, the clutch 40B is located on the right and the clutch 40B is located on the left, which is the same arrangement as in the forward moving state.

For this reason, the brake 39B is linked to the brake 3qA via the crank arm 'l-2, and the clutch 11OB is linked to the clutch 40AK via the crank arm 1It3, so even in a narrow tunnel, the vehicle can be operated in the same state without making a U-turn. You can retreat.

In addition, the core cutter/da is fed by the Ebi first hydraulic motor 2g, and then the clutch = 3 is switched and the weight 33 is fed.
Although we have explained the method of feeding by its own weight, it is also possible to have a structure in which only one of them is used.

Although the batch ')-34' is shown in the case where it is mounted integrally on a vehicle body, it may be mounted on a separate vehicle body and towed or self-propelled to the site.

Patch! j-3'1 is not used, and the rotation of the cylinder is controlled by belt 1I4 as shown in Fig. 2.
It is sufficient to rotate a separate hydraulic pump q3 at the front of the vehicle body through the hydraulic pressure, and use this hydraulic pressure to drive the hydraulic motor 10 for drilling holes and the hydraulic motor for feeding.

In addition, in the above embodiment, a structure in which three booms and hydraulic cylinders are combined and supported on a turntable as a hydraulically driven support mechanism was shown. It may also have a structure in which a feed boom is movably provided on the feed boom. Further, the number of tires is not limited to eight, but may be any number as long as it is four or more.

〔Effect of the invention〕

As explained above, according to the self-propelled boring machine according to the present invention, the self-propelled boring machine according to the present invention is driven by the engine to drive itself to the site in the tunnel, and at the site, the direction of the feed boom is controlled by the support mechanism.
The angle and height can be easily set, making preparation work much easier than before. Furthermore, since the drilling is performed while preventing vibration by rotating a hydraulic motor using battery power, there is no generation of CO gas and a large rotational force can be obtained. In particular, the drive mechanism for sending the core cutter uses a combination of hydraulic pressure and the gravity of a heavy truck.After the core cutter is first driven into the wall by hydraulic pressure, the operator monitors the process until the core cutter is switched and the heavy truck reaches the ground. Even if the core tube is not drilled, the hole can be automatically drilled to a predetermined depth, and the core tube itself can be made longer, so there is less need for additional work and the work efficiency can be greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a left side view showing a self-propelled boring machine of the present invention;
Figure 2 is its front view, Figure 3 is a sectional view of the cutter steady rest, Figure 4 is a sectional view showing the connection between the clutch and the wire winding wheel, Figure 5 is a plan view of the driver's seat, and Figure 6 FIG. 7 is an explanatory view showing a state in which holes are being drilled on the tunnel wall surface, and FIG. 7 is an explanatory view showing a state in which holes are being drilled on the ground side of the tunnel. /...Car body =...Tyre...Engine 3...Support mechanism B...Turntable 7A, 7B...Lift boom gA~gC...Hydraulic cylinder 9...Feed tom 10...・Hole drilling hydraulic motor /Co...Core tube/4...Core cutter /S...Cutter steady rest/7...Cam, 23.2 de...
Rotating shaft -q...Hydraulic motor =Y...Clutch 2B...Wire take-up wheel 3/...Wire 33...Heavy 3q...Battery 33.
...Electric motor 36...Hydraulic pump 37...
Driver's seat 39A1.3deB...Brake OA, Tei OB...Clutch qza...Tunnel wall

Claims (4)

[Claims] (1) A tire-driven vehicle body, installed on this vehicle body,
A support mechanism that can be tilted and rotated in all directions by hydraulic pressure, a hydraulic motor for drilling that is attached to the feed boom that makes up the tip of this support mechanism so that it can move forward and backward, and a hydraulic motor for drilling that is attached to the tip of the hydraulic motor for drilling. a cutter steady rest provided at the tip of the feed boom through which the core tube passes and supports it; a hydraulic pump that drives the hydraulic motor for drilling; and a hydraulic pump that is powered by battery power. A self-propelled boring machine characterized by comprising an electric motor driven by. (2) The support mechanism is comprised of three booms connected in a link shape on the turntable and three hydraulic cylinders respectively connected to the booms. The self-propelled boring machine described in item 1. (3) The self-propelled boring machine according to claim 1, wherein the cutter steady rest is formed with a three-way tightening structure. (4) A tire-driven vehicle body and installed on this vehicle body,
A support mechanism that can be tilted and rotated in all directions by hydraulic pressure, a hydraulic motor for drilling that is attached to the feed boom that forms the tip of this support mechanism so that it can move forward and backward with a chain,
A core tube attachment part attached to the tip of the hydraulic motor, a wire take-up wheel that is linked to the sprocket that drives the chain, and a weight attached to the tip of the wire wound around the wire take-up wheel. , a cutter steady rest provided at the tip of the feed boom through which a core tube passes and supports the cutter steady rest, a hydraulic pump that drives the drilling hydraulic motor, and an electric motor that drives the hydraulic pump using battery power. A self-propelled boring machine characterized by: