JPH056637B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a spraying device for constructing a lining by spraying lining construction members such as concrete and mortar onto the ground of a tunnel.

(b) Conventional technology Recently, many proposals have been made to prevent industrial accidents caused by dust generated during spraying work by using automatic machines to spray lining construction materials such as concrete instead of manually. There is.

(c) Problems to be Solved by the Invention However, when such a machine is used, it is desirable for the entire device to be housed in a compact shape, except during spraying work, in order to make effective use of the narrow tunnel space. , it has been desired to develop a spraying device that has such a function.

That is, as disclosed in Japanese Patent Application Laid-Open No. 60-51299, in a method in which the concrete spray nozzle is simply moved on a guide means integrally formed along the tunnel cross section, when the concrete spraying nozzle is not working except during the spraying work, Since the guide means gets in the way of other work, in the case of a tunnel with a small cross section, it is necessary to carry the guide means out of the tunnel, and this is an inconvenience that frequently occurs and work efficiency is hindered. arise.

Therefore, the guide means is configured to be foldable,
It may be possible to keep the guide means in a folded state while not working, and to wait on the side of the cross section of the tunnel. However, such a spraying device has not yet been developed.

In view of the above-mentioned circumstances, the present invention, when not in use,
It is an object of the present invention to provide a spraying device that can be folded and stored compactly so that the dimension in the width direction of a tunnel cross section is as small as possible.

(d) Means for solving the problem That is, the present invention provides a spraying device 1 having a nozzle 17 mounted on a moving means 2 and movably supported, in which a guide means 1 is attached to the moving means 2.
The fixed guide 10 provided with the
7, the fixed guide is provided so as to be movable up and down with respect to the moving means, and the moving guide 11, which is provided with guide means 11a on both sides of the fixed guide, is folded so that the tip becomes a free end. The movable guide is provided so as to be foldable and unfoldable with respect to the fixed guide around the point 10a, and the movable guide is folded with the fixed guide raised by the elevating mechanism, so that the tip of the movable guide is approximately at the folding point. The guide means 10a and 11a of the fixed guide and the movable guide are arranged in an arcuate manner when the movable guide is unfolded, A spray cart 13 having the nozzle mounted thereon is movably provided along the guide means.

Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions in the drawings. The same applies to the column "(e). Effect" below.

(e) Effect With the above configuration, the present invention deploys the movable guides 11, 11 on both sides of the fixed guide 10 when spraying concrete, etc., and in that state, the spraying cart 13 is moved between the fixed guide 10 and the movable guide 1.
While moving between 1 and 11, a spray operation is performed from nozzle 17, and when not in operation, moving guide 1
1 and 11 are folded so that the tip of the movable guide is located approximately vertically below the folding point 10a with the fixed guide 10 raised.

(f) Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

1 is a front view showing an embodiment of the spraying device according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of FIG. 1.

As shown in FIGS. 1 and 3, the spraying device 1 has a frame 3 mounted on a moving vehicle 2 such as a truck, and a sub-frame 6 is attached to the frame 3 via a parallel movement mechanism 5. , is supported so as to be movable in the vertical direction in FIG. 3, that is, in the directions of arrows A and B. A hydraulic jack 7 is installed between the frame 3 and the subframe 6, and a truck 9 is mounted on the subframe 6 so as to be movable in the directions of arrows C and D. A trolley 9 is mounted so as to be movable in the directions of arrows C and D. As shown in FIGS. 1 and 2, the trolley 9 is provided with a fixed guide 10 in which four fan-shaped guide rails 10a are installed in parallel, and on both sides of the fixed guide 10. is a moving guide 11,1 similarly formed in a fan shape.
1 is the pin 10 implanted on both sides of the fixed guide 10
It is rotatably supported in the directions of arrows E and F via a and 10a. Four guide rails 11a are installed in parallel to each moving guide 11, and furthermore, hydraulic jacks 12, 12 are provided between the fixed guide 10 and the moving guides 11, 11.

On the fixed guide 10 and the movable guides 11, 11, a spraying cart 13 is installed on the guide rails 10a, 1.
It is installed in such a way that it can be moved and stopped freely on 0a,
An arm 15 is provided on the spray truck 13 so as to be freely protrusive and driven in the directions of arrows C and D. Arm 15
A nozzle rotation device 16 is supported at the tip of the nozzle rotation device 16 so as to be rotatable in the directions of arrows C and H around a pin 16a, and the nozzle 17 is supported on the nozzle rotation device 16 so as to rotate in the directions of arrows I and J and arrow K. , are supported movably in the L direction. Therefore, by driving the nozzle rotation device 16, the tip of the nozzle 17 is moved between a position X1 where the tip is directed slightly to the right in FIG. 3 and a position X2 where the tip is directed horizontally to the left. It can be freely rotated within a range of 125 degrees (of course, the rotation angle can be set arbitrarily) and further within a range from position X3 to position X4 in FIG.

Incidentally, numeral 19 is a hydraulic unit that supplies pressure oil to each hydraulic jack of the spraying device 1, and numeral 20 is a support jack for preventing the moving vehicle 2 from rolling during a working state.

As shown in FIGS. 1 to 3, the tunnel 21 has a substantially semicircular cross section, and in the direction of arrows C and D, which are the excavation directions, H-beam steel etc. Shoring 22 made of steel is provided to prevent the collapse of the ground 23.

Since the spraying device 1 etc. has the above-described configuration, when constructing a lining by spraying lining construction members such as concrete onto the ground 23 of the excavated tunnel 21, the spraying device 1 etc. As shown in FIG. 3, by moving the support jack 20, the moving vehicle 2
is fixed on the ground 25 corresponding to the position where concrete etc. will be sprayed, and in that state the hydraulic jack 1
2 and 12, the movable guides 11 and 11 are moved from the folded state shown by the imaginary line in FIG. On the other hand, it is rotated about the pin 10a in the direction of arrow E. The subframe 6 and the fixed guide 10 are connected to the movable guides 11 and 1.
1 in the folded state, it is raised in the direction of arrow A by the hydraulic jack 7 and the parallel movement mechanism 5, that is, the state shown by the imaginary lines in FIGS. 1 and 3. When unfolding in the direction of arrow E, the lower end of the moving guide 11 is placed on the ground 2.
There is no chance of getting caught in 5, and it is done smoothly.

In this way, when the movable guides 11, 11 are expanded in the E direction and formed into a continuous fan shape relative to the fixed guide 10 as shown in FIG. 1, the guide rails 10a, 11a of each guide also mutually It is connected in a continuous manner, and the whole is formed into an arc shape.
Next, the parallel motion mechanism 5 is driven by the hydraulic jack 7.
Move the sub-frame 6 by an appropriate amount in the directions of arrows A and B through the arrows, and hold the guide rails 10a, 11a on the moving guides 11, 11 and the fixed guide 10 to an appropriate height position for spraying, Hold it in that position.

In this state, move the arm 15 in the direction of arrows C and D.
The nozzle rotating device 16 is appropriately moved in the directions of arrows G and H, and the nozzle 17 itself is also moved in the directions of arrows I, J and K.
By moving in the L direction, the concrete spraying hole 17a at the tip of the nozzle 17 is directed toward the ground 23 of the tunnel 21 where the lining is to be constructed. Therefore,
A lining construction member such as concrete is sprayed toward the ground 23 from the spray holes 17a to construct a lining of a predetermined thickness. Note that the spray hole 17a is the third
As shown in the figure, the tunnel 21 can be freely rotated between position X1 and position X2.
It is now possible to spray concrete, etc. onto the side wall portion and face in FIG. Furthermore, since the truck 9 can move on the subframe 6 in the directions of arrows C and D, the lining can be constructed for the side walls of the tunnel 21 over a predetermined length in the directions C and D. Moreover, since the spray cart 13 itself can also move along the guide rails 10a, 11a of the fixed guide 10 and the movable guides 11, 11, the nozzle 17 can be moved along the guide rails 10a, 11a.
can be moved along the cross-sectional shape. As a result, the guide rail 10 of each guide in the unfolded state
By forming a and 11a in a shape similar to the cross section of the tunnel 21, the spray hole 17a of the nozzle 17 and the ground 2 to which concrete etc. are sprayed are formed.
3 can be moved while maintaining a uniform distance in the directions of arrows K and L in FIG. 1, making it possible to perform uniform spraying operations.

In this way, when the spraying operation of concrete etc. is completed, the spraying cart 13 is moved to the fixed guide 10.
The sub-frame 6 is positioned and fixed at the central portion (not shown in FIG. 1) of FIG. In this state, the hydraulic jacks 12, 12 are driven to rotate the moving guides 11, 11 in the direction of arrow F around the pin 10a. Then, the guide rail 10 of each guide, which had been in the unfolded state until then,
Fixed guide 1 in which a and 11a are in a continuous state
0 and the moving guides 11, 11 are in a state where the moving guides 11, 11 on both sides are folded, as shown by the imaginary lines in FIG. to W2.
At this time, the folded movement guides 11, 11 are
As shown in FIG. 1, the tip of each movable guide 11 is located approximately vertically below the pin 10a, which is the center of rotation, so that each movable guide 11 is positioned on both sides of the fixed guide 10 in the raised state. It is folded on both sides of the frame 3 in such a way that it hangs vertically downward.
Furthermore, since the fixed guide 10 of the movable guide 11 is folded into the raised state, the space in the vertical direction from the pin 11a portion of the fixed guide 10 in the raised state to the vicinity of the ground 25 is effectively used as the folding space for the movable guide 11. By increasing the length of the foldable moving guide 11,
By shortening the length of the fixed guide 10 in the left-right direction in FIG. 1, the width W2 of the entire spraying device 1 including the moving vehicle 2 in the tunnel cross section can be made as short as possible. Therefore, if the moving vehicle 2 is driven and the spraying device 1 is moved to one side of the tunnel 21 (FIG. 1), a sufficient cross-sectional space is secured in the tunnel 21, and it becomes possible for dump trucks, heavy machinery, etc. to come and go. .

As described above, in the spraying device 1 having the nozzle 17 mounted on a moving means such as a moving vehicle 2 and movably supported, the moving means is provided with a guide means such as a guide rail 10a. A fixed guide 10 is provided so that it can be moved up and down with respect to the moving means by a lifting mechanism such as a hydraulic jack 7 and a parallel movement mechanism 5, and guides such as guide rails 11a are provided on both sides of the fixed guide. The movable guides 11, 11 provided with the means are provided with free ends so that they can be folded and unfolded with respect to the fixed guide around a folding point such as the pin 10a, and the fixed guide is moved by the elevating mechanism. By folding the movable guide in the raised state, the distal end of the movable guide is positioned substantially vertically below the folding point, and the guide means of the fixed guide and the movable guide are The movable guides are arranged so as to be connected in an arc shape in the unfolded state, and the spraying cart 13 with the nozzle mounted on the guide means is provided movably along the guide means, so that concrete, etc. When constructing a lining, the movable guide is unfolded to spray concrete, etc., and when other work is not done, the fixed guide is raised and the movable guide is moved so that the free end of the movable guide is By folding the folding point so as to be positioned substantially perpendicularly to the folding point, the folded moving guide hangs vertically downward from both sides of the fixed guide 10 in the raised state, and is compactly folded on both sides of the moving means.

Furthermore, since the movable guide 11 can be folded with the fixed guide 10 raised, the space in the vertical direction from the folding point of the raised fixed guide to near the ground can be effectively used as the folding space for the movable guide 11. By increasing the length of the foldable movement guide,
Shorten the length of the fixed guide in the left and right direction in Figure 1.
The width of the entire spraying device including the moving vehicle in the tunnel cross section is defined as the width W2 as shown in Figure 1.
It can be made as short as possible. Therefore, it is less necessary to retreat the spraying device to the outside of the tunnel every time it is not working, and the narrow tunnel space can be used effectively, contributing to increased work efficiency.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a spraying device according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of FIG. 1. 1... Spraying device, 2... Moving means (moving vehicle), 10... Fixed guide, 10a, 11a...
Guide means (guide rail), 11... moving guide, 13... spraying cart, 17... nozzle.

Claims (1)

[Scope of Claims] 1. A spraying device having a nozzle mounted on a moving means and movably supported, wherein a fixed guide provided with a guide means is mounted on the moving means with respect to the moving means by an elevating mechanism. A movable guide is provided so that the fixed guide can be moved up and down so that it can be moved up and down, and guide means are provided on both sides of the fixed guide, and the movable guide is folded with respect to the fixed guide around a folding point so that its tip becomes a free end. The movable guide is provided so as to be expandable, and by folding the movable guide while the fixed guide is raised by the elevating mechanism, the movable guide can be folded so that the tip thereof is positioned substantially vertically below the folding point. provided, the guide means of the fixed guide and the movable guide,
A spraying device comprising: the movable guide arranged so as to be connected in an arc shape in an unfolded state, and a spraying cart having the nozzle mounted on the guide means movably provided along the guide means.