JPH0312944B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work vehicle for tunnel construction.

Generally, various works are carried out inside tunnels. For example, after the excavation work, small removal work of floating stones or work of spraying concrete onto the wall surface is performed.

Conventionally, each of the above-mentioned operations was normally performed by a dedicated vehicle. Therefore, vehicles must be replaced every time work is performed, which is inefficient. Furthermore, if the replacement is not carried out, multiple vehicles will accumulate, making the work site cramped.

The present invention was developed in view of the above-mentioned business, and its purpose is to provide a working vehicle for tunnel construction that can efficiently perform work inside a tunnel. In order to achieve this objective, the present invention provides a single vehicle with a plurality of functions so as to be able to handle various operations performed inside the tunnel.

Embodiments embodying the present invention will be described below with reference to the drawings.

In the drawings, reference numeral 1 denotes a crawler-type vehicle on which a support base 2 is mounted so as to be able to turn in a horizontal plane. A concrete spraying device S, a floating rock cutting device J, a decking device D for high-place work, etc., which will be described below, are installed on the support base 2. The cylinders used in these devices, which will be described later, are all operated by a hydraulic unit 3 and a hydraulic operating unit 4 mounted on a support 2.

First, starting with the concrete spraying device S, reference numeral 5 is a lift beam, which is supported so as to be able to rotate approximately 300 degrees in a vertical plane with respect to a rotary actuator 6 provided at the center of one end of the support base 2. ing. The lift beam 5 is formed into a slidably inserted double pipe structure, and can be lifted by a built-in lift cylinder 7.

8 is a tail beam, which is rotatably pinned 9 to the operating end of the lift beam 5, and a tail cylinder 10 interposed between the lift beam 5 and the tail beam between the horizontal upright position and the folded position. can perform actions.

11 is reach beam, tail beam 8
A first reach cylinder 12 arranged above and built in the tail beam 8 can move the entire body forward and backward along the tail beam 8. Also, like the lift beam 5, the reach beam 11 is formed into a slidably inserted double pipe structure, and can perform a reach operation with a built-in second reach cylinder 13.

A crank box 14 is attached to the working end of the reach beam 11 and has a built-in crank mechanism. The crank box 14 is also provided with a cylinder 15 connected to the crank mechanism, and the cylinder 15 connects the mounting bracket 16 of the spray nozzle 17 connected to the crankshaft within a certain range (approximately 20 mm). It can be rotated by swinging the head in degrees. That is, during the spraying operation, the spray nozzle 17 can be rotated within the vertical section of the tunnel T.

The spray nozzle 17 is attached to the mounting bracket 16
A swinging arm 1 pinned 18 so as to be rotatable relative to the swing arm 1
It is fastened with a fastener 20 of 9. and,
A nozzle tail cylinder 21 for adjusting the spray angle interposed between the mounting bracket 16 and the swing arm 19 allows the spray nozzle 17 to be always oriented at right angles to the spray surface. Furthermore, although this spray nozzle 17 is not shown,
It is connected to a concrete supply source via a pressure hose 22.

Note that in this example, the rotary actuator 6
A solenoid valve, a magnetic switch, a timer, a pressure switch, etc. are installed in the hydraulic system for each of the reach cylinders 13 and 13, and each operation is performed so that the spraying operation proceeds as shown in FIG. is controlled.

Next, the deck device D for working at high places will be explained. 23 is a main deck, and a pair of pantograph-shaped support legs 24, 2 are interposed between it and the support base 2.
4, and the main cylinder 25
It is possible to go up and down.

Reference numeral 26 denotes a sub-deck, which is supported by two parallel arms 27 extending from the center of the main deck 23 in the direction opposite to the spraying device S, and has sub-cylinders arranged in parallel between the two parallel arms 27. It is possible to go up and down at 28. Further, in order to facilitate getting onto the sub-deck 26, a lifting step (not shown) is formed between both parallel arms 27.

Next, the floating stone cutting device J will be explained.

Reference numeral 30 denotes a support block erected on the main deck 23, with first and second support shafts 3 on the front surface thereof.
1 and 32 are rotatably supported in parallel vertically.

Reference numeral 33 denotes a breaker beam, which is jointed to the first support shaft 31 via a bracket 34 with a pin 35 so as to be rotatable in a vertical plane. In addition, a first tilt cylinder 36 is interposed between the breaker beam 33 and the first support shaft 31 so that the breaker beam 33 can perform a tilt movement of about 60 degrees, and a boom movement within a predetermined range. A first boom cylinder 3 is connected to the second support shaft 32 by a pin 38 through a bracket 37.
9 is interposed. In addition, breaker beam 3
3 is formed into a double pipe structure that is slidably inserted, and a reach operation can be performed by a built-in reach cylinder 40.

41 is a mounting arm, and breaker beam 3
The pin 42 is rotatable in a plane perpendicular to the working end of 3.
The second tilt cylinder 43 can perform a tilting operation while being attached.

44 is a breaker for cutting floating stones, and is supported by a holder 46 to which a pin 45 is attached so as to be rotatable in a horizontal plane with respect to the mounting arm 41. A second boom cylinder 47 is arranged in parallel between the holder 46 and the mounting arm 41 so that the breaker 44 can perform boom operation. The breaker 44 is connected to the hydraulic unit 3 via a hydraulic hose (not shown), and its operation can be controlled by the hydraulic operating unit 4.

Finally, 48 is an outrigger attached between both crawlers, and the cylinder 49 can control the vehicle during work.

Subsequently, the operation and effect of this example configured as described above will be specifically explained.

When the excavation work of the tunnel T is completed, the vehicle of this example is carried to a predetermined work position inside the tunnel T, and the scaffolding is fixed with the outriggers 48. Below this, various works such as small cutting work and spraying work are performed.

First, when carrying out small cutting work, the hydraulic operation unit 4 is operated to operate the related cylinders in order to guide the breaker 44 to the floating stone to be cut. That is, by raising the main deck 23 with the main cylinder 25 and raising the breaker beam 33 with the first tail cylinder 36, the breaker 44 is roughly adjusted to a desired height position. At the same time, the breaker beam 33 is rotated by the first boom cylinder 39, thereby guiding the breaker 44 approximately to the vicinity of the floating stone to be cut. After this, the breaker 44 is connected to the second boom cylinder 47.
By rotating the breaker 44 at the
to accurately face the floating rock. By operating the breaker 44 under this condition, the floating stone can be reliably scraped off. At this time, breaker 4
Since the hydraulic operation unit 4 that performs the operation No. 4 is spaced backward from the breaker 44, the work can be carried out safely without danger from falling rocks.

In this way, in this example, the breaker 44 can be quickly and accurately guided to a floating rock at an arbitrary position by performing the lift, tilt, and boom operations on the breaker 44 in a combined manner. Further, by operating the reach cylinder 40, the working radius of the breaker 44 can be expanded, so that fixed position work can be expanded and small cutting work can be performed labor-savingly.

When performing high-place work such as surveying or building shoring, when the work vehicle is on the main deck 23 and the main cylinder 25 is operated as described above, the supporting legs 24 will rise and the main deck 23 will be in a horizontal state. It can be lifted while being held. In this way, the worker can be guided to a high place, and work such as surveying, bolting of the shoring, or netting during the erection of the shoring can be easily carried out. Furthermore, when the sub-cylinder 28 is operated, the sub-deck 26 is held horizontally and lifted by both parallel arms 27. Then, the worker
If the user climbs onto the sub-deck 26 using the steps (not shown) provided between the decks 7 and 7, the user can perform an auxiliary role in the above-mentioned work at height. Furthermore, during the above-mentioned scraping work of floating rocks, it is possible to give accurate instructions for guiding the breaker 44, and it is also possible to facilitate confirmation after scraping off.

Now, after the work of scraping the floating stones is completed, concrete is sprayed onto the wall surface of the tunnel T. First, before spraying work, the lift beam 5 is extended by the lift cylinder 7 in order to correspond to the diameter of the tunnel T. Next, the tail cylinder 10 is operated to raise the tail beam 8 so that it is perpendicular to the lift beam 5. Then, the entire spray device S is rotated by the rotary actuator 6 to position the spray nozzle 17 below the wall surface of the tunnel T in order to sequentially move from the bottom to the top along the tunnel wall surface. In addition, if necessary at this time, the spray nozzle 17 can be connected to the tunnel T.
Make adjustments so that it is perpendicular to the wall surface. That is, when the cylinder 15 is actuated, the spray nozzle 17 is swung through the mounting bracket 16 by a crank mechanism (not shown) in the crankbox 14, and when the nozzle tail cylinder 21 is actuated, the spray nozzle 17 is swung. Nozzle 17 is tilted.

Thus, once the preliminary work described above is completed, the pressure hose 22 is
The concrete is force-fed to the spray nozzle 17 and sprayed onto the wall surface of the tunnel T. The spraying operation at this time proceeds automatically as shown in FIG. That is, the direction of movement of the tunnel T (the direction of arrow P shown in FIG. 6) is performed by extending the reach beam 11 by a preset stroke using the second reach cylinder 13. In addition, in the circumferential direction of the tunnel T (the direction of arrow Q shown in FIG. 6), when the reach beam 11 is extended by a predetermined stroke, the entire spraying device S is set in advance by the rotary actuator 6. This is done by rotating upward by an angle. Next, the reach beam 11 is contracted and spraying is performed in the direction opposite to the direction in which the tunnel T travels. Thereafter, the entire spraying device S is again rotated upward by the rotary actuator 6 at the same angle as above. By sequentially advancing this cycle along the circumferential direction of the tunnel T, the wall surface of the tunnel T can be uniformly sprayed within a certain range. In other words, in this example, the concrete spraying work progresses automatically, which contributes to labor savings, and by setting the displacement speed of the spray nozzle 17 to be approximately constant, the concrete is sprayed evenly and uniformly. A sprayed surface can be obtained. Also, the first
By activating the reach cylinder 12 and sliding the entire reach beam 11 forward along the tail beam 8, the spray range of the spray nozzle 17 is expanded, so the range of fixed position work is expanded, and the spray It is possible to save labor in attachment work.

As mentioned above, this example vehicle has a floating stone cutting device J,
Since it is equipped with a decking device D and a concrete spraying device S, a single device can handle a series of operations performed after excavating the tunnel T. Therefore, unlike in the past, there is no need for multiple dedicated vehicles of various types to remain in the tunnel T.
The work space inside the tunnel T can be used effectively. Additionally, since there is no need to change dedicated vehicles, the work can be carried out efficiently. In addition, in this example, each of the above-mentioned devices is mounted on the crawler vehicle 1 that can rotate, and the small cutting device J and the concrete spraying device S are arranged facing each other in the front and back. This avoids any hindrances during the process.

The present invention relates to a deck for high-altitude work that is installed to be movable up and down relative to the base of a working vehicle, and a floating rock cutting device that is installed on the deck and is capable of tilting, turning, and linearly moving forward and backward. and a spraying device that is rotatably supported in a vertical plane at the end of the abutment and can move forward and backward in the radial direction of the tunnel.

Therefore, the present invention is equipped with a function that can be used for various operations after tunnel excavation, such as small cutting of floating stones, spraying operations, and high-place operations.
Therefore, work within the tunnel can proceed efficiently. That is, the present invention skillfully achieves multipurpose tunnel work vehicles.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Figure 1 is a front view of this example vehicle, Figure 2 is a side view with the same part omitted, Figure 3 is a front view of the spraying device, Figure 4 is a front view of the scraping device, and Figure 5 is a plan view of the same. , FIG. 6 is an explanatory diagram showing the spraying procedure. DESCRIPTION OF SYMBOLS 1...Flora vehicle, 2...Abutment, 17...Blowing nozzle, 23...Main deck, 26...Sub deck, 44...Breaker, S...Blowing device, J...Small cutting device, D... ...Deck device, T...
tunnel.

Claims (1)

[Claims] 1. A deck for high-altitude work that is installed to be able to be raised and lowered relative to the base of a work vehicle; a floating rock cutting device that is mounted on the deck and is capable of tilting and turning, as well as moving forward and backward in a straight line; 1. A working vehicle for tunnel construction, comprising: a spraying device rotatably supported in a vertical plane at an end of an abutment and capable of moving forward and backward in the radial direction of a tunnel.