JPS61103000A - Skin form brushing device for tunnel lining centre - 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 (Field of Industrial Application) The present invention relates to a brushing device for cleaning skin foam on the outer surface of a center used for tunnel lining.

(Conventional technology and its problems) In the secondary lining of tunnel construction using the NATM construction method, there has been a recent trend to reduce the thickness of the concrete of the secondary lining, so the surface of the secondary lining The distance between the center and the skin foam, which is the outer surface of the center used for secondary lining, has become narrower. This has made cleaning the outer surface of the skin foam, applying a release agent, etc. extremely difficult.

If the center skin foam is not cleaned thoroughly, the surface finish of the secondary lining concrete will be uneven, so there is currently a need in the tunnel industry for a device that can reliably clean the center skin foam. ing.

(Means for solving interlayer points) In order to solve the above-mentioned problems, in the present invention, skin foam is provided on both end surfaces of the inner skeleton of the skin foam at both longitudinal ends of the tunnel and /I/N center. A guide rail is provided along the guide rail, a roller chain is attached to the guide rail, a frame is provided to be movable via a guide roller that fits with the guide rail, and a sprocket that meshes with the roller chain is provided on the frame. (The frame can be driven by rotating this sprocket, and a brushing frame connecting the seven frames at both ends of the center is provided outside the skin form, and inside this brushing frame In addition, a shaft is provided along the longitudinal direction of this frame so that it can freely swing, and a brush is fixed to this shaft so that this brush is always pressed against the skin foam by a spring force, and the brush is rotated on the frame. A driving device is installed to configure the skin foam brushing device for the tunnel lining center.

(Function) As described above, in the present invention, since a brushing device is provided that is movable along the outer peripheral surface of the center, the skin form of the center can be easily and reliably cleaned by mechanical force. I can do it. Therefore, the surface finish of the secondary lining concrete becomes smooth, the quality is improved, and the work efficiency is also improved.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure, 1 (see Figure 1) is the excavated surface of the tunnel, 2 is concrete for the primary lining, and 8 is the center for the secondary lining; internal structures are omitted. Reference numeral 4 indicates a skin form forming the outer surface of the St/I/8, and 5 indicates a space for a secondary lining between the concrete 2 and the skin form 4, which are the primary lining. Further, 6 is a framework provided on the inner surface of the skin foam 4, and 6a is its both outer end surfaces.

In this embodiment, brackets 7 made of angle material are attached to the skin foam 4 at appropriate intervals on both outer end surfaces 6a of the frame 6 provided on the back surface of the skin foam 4 of the center 3.
The guide rails 8 are formed by curving a hollow rectangular cylinder having a hollow rectangular cross section with one corner cut out and curving along the arched front shape of the skin form 4. A roller chain 9 is fixed to each bracket 7, and is installed along the bottom of the open side of the guide rail 8.
are attached, and both ends of this roller chain 9 are fixed to both leg ends of the guide rail 8, respectively.

Further, on the outside of the skin foam 4 of the center 3, a brushing frame 1o with a rectangular planar shape that encloses two fludges for cleaning the surface of the skin foam 4 is placed parallel to the axial direction of the center 8 and end plates 10a at both ends in the longitudinal direction of this brushing frame 10;
Two plates llb, 110 are connected to each other by bolts ll& at appropriate intervals, and outer frames 11 (see Fig. 4.5) are provided on the inside of these outer frames 11 at appropriate intervals. and bolt 1
Eight plates 12b, 12c, 1 connected by 2a
An inner frame 12 made of 2d is detachably connected to an outer frame 11 by two bolts and nuts 13.

Two guide rollers 14 that are rotatably fitted into the guide rail 8 are each pivotally supported on the inner edge of the plate 12b of the inner frame 12 via a shaft 15. Also shown in FIGS. 4 and 5 is the plate 12b of the inner frame 12.

8 sprockets 16, 17, 18 between 12c
In the figure, the center sprocket 17 is arranged so as to protrude upward and is rotatably supported on the inner frame 12 by shafts 19, 20, 21, respectively, and the roller chain 9 is connected to the sprocket as shown in FIG. From the bottom of 16, through the upper half of sprocket 17, and then to sprocket 18.
It is attached to the lower side of . Gears 22.28° 24 having the same number of teeth are fixed to the shafts 19 and 20.21, respectively, and the shaft 20 is connected to the plate 12, as shown in FIG.
A transmission gear 25 is fixed to the extension of the shaft 20, and a pinion 26 is provided which meshes with the transmission gear 25.
It can be driven by a motor 27 fixed to 2d. As shown in FIGS. 2 and 8, the sprocket driving devices described above are provided at both ends of the center 8, but the motor 27 is installed symmetrically to one side with respect to the inner frame 12.

In addition, shafts 2B and 29 passing through the outer frame 11 are installed horizontally at the left and right sides of the brushing frame 1θ in FIG. 80 are arranged symmetrically as shown in FIG. 2, and a base 31a of an arm 81 is pivotally supported on each of these brackets 80 by a shaft 82'1 (see FIG. 6). This shaft 82 is then located on the extension axis of the shafts 28, 29. In addition, two left and right shafts 33 and 84 passing through the free end alb of each left and right arm 31 are rotatably provided, and cylindrical shafts are arranged on these shafts 3a and 84 alternately on the left and right as shown in FIG. A brush 85 is arranged and provided ◇ And in order to rotationally drive the shaft 88 of this brush 35,
As shown in FIGS. 4 and 5, the pulley 36 is fixed to the shaft 33 extending into the outer frame 11, and a pulley 87 is fixed to the shaft 2B, and the timing belt a8 is passed around these pulleys 86 and 87. Pulley 39 to #128
while fixing the plate 12d of the inner frame 12.
A pulley 41 (see FIG. 4) is fixed to the output shaft of the motor 10 fixed to the motor 10, and a timing belt 42 is passed around these pulleys 39 and 41.

The other shaft 34 is driven by a motor 40 installed in a symmetrical position on the left inner frame 12 in FIGS. 2 and 8, and driven by means similar to the transmission mechanism described above.

Further, as shown in FIGS. 4 and 5, the base portions 48a of two arms 48 are respectively fitted to the shafts 28 and 29 provided on the outer frame 11, and the free end portions 43b of each arm 48 are fitted.
fits into the extension of said shaft 88.34, and said shaft 83.8
A spring locking rod 44 is provided upwardly protruding from each free end portion 43b of the arm 43 fitted to the arm 4, and a coil spring 45 is stretched between these opposing left and right spring locking rods 44.

Further, as shown in FIGS. 4 to 6, a release agent supply pipe 46 is disposed on the ceiling of the brushing frame 10, and spray nozzles 47 are connected to this pipe 46 at appropriate intervals. Reference numeral 48 (see FIG. 4) is a release agent pressure supply hose connected to the pipe 46.

Further, in FIG. 1, 6b is a beam installed horizontally at the top end of the frame 6, and 49 is a cable reel installed on this beam 6b. The cable 50 wound around this reel 49 is connected to a plurality of guide rollers 51 protruding from the frame 6.
It is connected to the driving device consisting of the motors 27 and 40 through the brushing device B (see FIG. It has become. Also 52
is a cord electrically connected to the table 50 of the cable reel 49, and this hood 52 is suspended via a locking rod 58 protruding from the beam 6b, and a remote control button switch 54 is connected to the lower end of the cord. has been done.

Next, the operation of the apparatus of the present invention constructed as described above will be explained. FIG. 1 shows a state in which the puffing device B is located at the lower part on the right side. In this state, pulley 41, belt 4
2, pulley 89, shaft 28 (or 29), pulley 87,
It is transmitted to the shaft 88 or shaft 84 via the belt 88 and pulley 86.

Therefore, the axis 88. (The brushes 85 fixed to the coil springs 4 rotate in unison.The shafts 38, 34
Since each brush 85 is always pressed against the surface of the skin foam 4 of the center 3 by the action of the brush 85, each brush 85 reliably brushes the surface of the skin foam 4.

The rotation of the motor 27 is controlled by the pinion 26 and the transmission gear 25.
, @20 to rotate the gear 28 and also rotate the gears 22, 24 meshing with the gear 23. Therefore, the sprockets 16, 17, 18 integral with each gear 22, 213, 24 also rotate. For example, in Fig. 5, if the sprockets 16, 17, and 18 rotate in the directions of the arrows, the roller chain 9 and the sprockets 16, 17
．． 18, the brushing device B moves in the direction of arrow A. This movement is guided by guide rollers 14 and guide rails 8.

When the brushing device B in FIG. 1 moves upward along the guide rail 8 in this manner, the surface of the cent/I/8 skin form 4 is sequentially brushed from the bottom right by each of the brushes 85, 2h6. In this case, as shown in FIG.
Brushing device B
The entire surface of the skin form 4 is brushed by this movement. At this time, if necessary, the skin foam 4 can be cleaned more reliably by spraying a release agent from the spray nozzle 47 via the hose 48 and pipe 46. In FIG. When the cable 50 moves to , the cable 50 is wound onto the reel 49 accordingly. Further, the curvature of the skin form 4 changes as the brushing device B moves, but the shafts 33 and 34 are connected to the arms 81.
, 43, and the brush a5 is always pressed against the surface of the skin foam 4 by the action of the coil spring 45, so that the entire surface of the skin foam 4 can be cleaned regardless of changes in curvature. Then, when the brushing device B goes over the top of the center /I/8 and descends along the left skin form 4, the cable 50 is pulled out from the reel 49 again, and the brushing device B moves to the left guide rail 8. When you reach the bottom of
It is automatically stopped by the action of a limit switch c (not shown). If necessary, the brushing device B can be moved in the opposite direction by operating the remote operation button switch 54 again.

According to the device of the present invention, the surface of the skin foam 4 of the center 3 can be efficiently cleaned as described above. When this cleaning is completed, the brushing device B is removed from the center 8, and the secondary lining concrete is poured into the space 5 between the skin 7:t-A4 and the primary lining concrete 2. good.

(Effects of the Invention) As described above, in the present invention, since a brushing device is provided which is movable by mechanical force along the outer peripheral surface of the center, the skin foam of the center can be cleaned quickly and easily by mechanical force. And it can be done reliably. Therefore, according to the present invention, the surface finish of the secondary lining concrete becomes smooth, the quality is improved, and the work efficiency is also significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a front view of a tunnel lining center equipped with the device of the present invention, Fig. 2 is a partial plan view thereof, Fig. 8 is an elevational view of Fig. 2, and Fig. 4 is a partial detailed view of Fig. 8. , FIG. 5 is a sectional view taken along the line V--V in FIG. 8... Centaur 4... Skin form 6
... Frame 6a... End face 8... Guide rail 9... Roller chain 10... Brushing frame 11... Outer frame 12... Inner frame 14... Guide rollers 16, 17, 18 ... Sprocket 22.2a, 24... Gear 25... Transmission gear 26... Binion 27... Motor 28
．． 29...M 8o...Bracket 8
1... Arm 32... Axis 33, 3
4...Shaft 85...Brush 86t37・
・・7'-! Jas...timing belt 39...
Pulley 40-...Motor 41...Pulley 42...Timing belt 43...
Arm 44...Spring locking rod 45-...Coil spring patent applicant: Aoki Construction Co., Ltd. Applicant: Shuto Kaname Figure 4, Figure 5N

Claims (1)

[Claims] 1. Guide rails are provided along the skin foam on both end faces of the inner framework of the skin foam at both ends of the tunnel lining center in the longitudinal direction, and a roller chain is attached to this guide rail and fitted with the guide rail. The frame is provided to be movable via a guide roller, and a sprocket that engages with the roller chain is provided on the frame so that the frame can be driven by rotating this sprocket. A brushing frame is provided outside the skin foam to connect the brushing frame, and a shaft is provided within the brushing frame so as to be swingable along the longitudinal direction of the frame, and a brush is fixed to this shaft. A skin foam brushing device for a tunnel lining center, characterized in that a brush is always brought into pressure contact with the skin foam by a spring force, and a brush rotation drive device is provided on the frame.