JPS6024799Y2 - Mobile formwork cleaning equipment for tunnels equipped with a cleaning device and an automatic release agent spraying device - Google Patents

Description

[Detailed explanation of the invention] (Purpose of the invention) The purpose of this invention is to simultaneously sweep away movable formwork for pouring concrete in tunnels and apply a release agent to improve cleaning efficiency and save on release agent. The present invention relates to a mobile formwork cleaning device for tunnels equipped with a mobile formwork cleaning device for tunnels and an automatic release agent spraying device.

(Prior art) When concrete pouring work for tunnels is completed, the movable formwork is moved to the next position and before the next concrete pouring work, scrapes of mortar stuck to the outer surface of the formwork are scraped off. However, in the past, workers had to enter the narrow gap between the tunnel excavation surface and the outer circumferential surface of the formwork, which is equal to the thickness of the concrete roll, and use manual brushing. Application has been done by brushing, applying the release agent with a brush, or spraying it with a sprayer, but this method not only makes the work difficult, but also causes a large loss of release agent, and is dangerous.

Furthermore, it required a lot of manpower and increased personnel costs.

(Structure of the invention) In view of the above-mentioned problems, the present invention aims to improve the efficiency of cleaning work, save on stripping agents, and save labor and safety by moving reciprocatingly on the outer peripheral surface of the movable formwork in the axial direction of the tunnel. A cleaning cart that can freely rotate back and forth is installed in a freely provided horseshoe-shaped guide rail, and this cleaning cart is equipped with a rotating wire brush for removing mortar and a special nozzle for spraying a stripping agent that can be adjusted freely. will be explained using figures as an example.

In FIGS. 1 and 2, a tunnel movable formwork (steel platform or slide center) cleaning device 1 cleans a known movable formwork P installed in a tunnel excavation surface T so as to be able to reciprocate in the axial direction. A mount 2 is attached to the end in the opposite direction (indicated by arrow P), and a mount 3 is installed on the mount 2.
A sprocket wheel 5, which can be rotated in forward and reverse directions, is attached near the top of the formwork F by a moving motor 4, which can be rotated in forward and backward directions, and a chain 6 that meshes with this sprocket wheel 5 is laid on the bottom surface of the movable link 7 on the formwork F side. The front and rear ends of the movable beam 9 are equipped with rollers 8, 8 that roll in the axial direction on the top of the formwork F. Shape guide rails 10.10' are installed facing each other, and this guide rail 10.1
Connect the lower ends of each of 0' with a span member 11.11,
Support rollers 12 and 12 are attached to the sides of the guide rails 10 and 10' so as to roll in the axial direction on the outer surface of the formwork F to stabilize the guide rails 10 and 10' to form a frame 13. A turning chain 15.5 for the swiveling cart 14, which will be described later, is laid on the inner bottom surface of the opposing U-shaped guide rails 10.10'. One unit is attached to each side divided by the movable beam 9 at the apex of the frame.

On the other hand, to explain the above-mentioned keren cart 13 in detail, in FIGS. 3 and 4, the keren cart 13 has sprocket shafts 17.
7' are pivoted in parallel, and this sprocket shaft 17.
The guide rails 10, 10 are attached to the protruding ends 18, 18' which protrude outward from the frame 16 of each of the guide rails 10, 17'.
A sprocket wheel 19 for turning that meshes with the chains 15, 15 for turning laid on the bottom surface of the
．． 19' and sprocket wheels 19. on both sides.
19' respectively engage a chain 15.15 in said guide rail 10.10'.

A large-diameter intermediate sprocket wheel 20 is coaxially fixed inside one of the sprocket wheels 19 on the protruding end 18 of one sprocket shaft 17, and is attached to a mounting frame 21 provided at one corner of the frame 16 in parallel with the sprocket shaft 17. An intermediate sprocket shaft 22 is attached to the intermediate sprocket shaft 22, and a chain 24 is hung between the small diameter intermediate sprocket wheel 23 fixed to the outer end of the intermediate sprocket shaft 22 and the large diameter intermediate sprocket wheel 20. Sprocket wheel 25 fixed inside 22 and rotating motor (cyclo reducer) that can freely rotate in forward and reverse directions attached to the mounting frame 21
A chain 28 is suspended between the sprocket wheel 25 and a drive sprocket wheel 27 directly connected to the sprocket shaft 7.17 within the frame 16.
Sprocket wheels 31 and 31 for rotating the wire rotating brush 29 are fixed to both ends of the shaft 30 of a circular wire rotating brush 29 that is pivoted parallel to the frame 16. Chains 34, 34 are respectively hung between drive sprocket wheels 33, 33 directly connected to motors (cyclo reducers) 32, 32, and sprocket wheels 31, 31 at both ends of the wire rotating brush 29, respectively.

A wire rotating brush 29 is provided on the outside of the square of the frame 16.
A floating prevention device 35 is installed to prevent the floating cart 14 from floating during use.

To explain this floating prevention device 35 in more detail, in FIGS. 3 and 4, the top and bottom of the frame 16 (in FIG. 3)
Shafts 36, 36 are implanted at both ends of the outer surface of the shaft 3, and each shaft 3
There are levers 38 and 39 on both sides of the boss that is rotatably fitted to the
A tension spring 41 is fixedly attached between the end of the inner lever 38 and a bracket 40 protruding from the frame 16.
and upper part of the outer end of the outer lever 39 (in Fig. 4).
Press the roller 4 at the upper end of the fork 42 installed toward the
3 are rotatably supported.

A special nozzle 4 for spraying a release agent that intermittently sprays onto the rear part (lower part in Figures 2 and 3) of the frame 16' of the cleaning truck 14.
A compressor 45, a stripping agent tank 46, and the special nozzle 44 installed on the pedestal 2.
,44. . . . are connected to the air hose 47 and the release agent supply hose 48, respectively.

The special nozzle 44 is attached to the guide rail 10.1 of the cleaning wheel 14.
The intermittent injection interval and injection amount can be adjusted in accordance with the rotation speed above 0'.

In this embodiment, the frame is moved and the swing truck is rotated by the engagement of the chain and the sprocket wheel, but a rack and pinion mechanism may also be used.

(effect of invention) The operation of the present invention will be explained with reference to figures of embodiments.

In Figures 1 and 2, the movable formwork F is attached to the end in the advancing direction (arrow P) of the movable formwork F, which is moved to the next concrete placement position in the direction of arrow P within the tunnel excavation surface T and fixed. A moving motor 4 installed on a mounting base 3 on a pedestal 2
When the moving sprocket wheel 5 rotates and the moving sprocket wheel 5 meshed with the moving sprocket wheel 5 is pushed out in the direction of arrow A, the chain 6 meshed with the moving sprocket wheel 5 is pushed out in the direction of arrow A. The frame body 13 of the attached formwork cleaning device 1 is connected to the rollers 8, 8 of the moving beam 9 and the support rollers 1 on the sides.
2. When the movable formwork F is moved in the direction of the arrow A on the outer circumferential surface F' by the transfer in 12 and stopped at the initial working position at 1, the lower ends of both sides of the horseshoe-shaped guide rails 10 and 10' of the frame body 13 The keren carts 14, 14, which were waiting respectively, operate as will be described in detail later, and the keren carts 14, 14 on both sides operate.
14, while rotating the wire rotating brushes 29 provided on each of the stripping agent special nozzles 44, 44, . . .
A stripping agent (not shown) is applied to the outer periphery d' of the movable formwork F from which mortar scum has been swept away by the wire rotating brush 29 at intermittent injection intervals and at intervals adjusted in accordance with the rotational speed of the cleaning table 14. While spraying a large amount of release agent, move upward from both ends of the horseshoe-shaped guide rail 10 and 10'.While cleaning the outer peripheral surface F' of the formwork F, move up to the moving beam 9 at the top and then descend. When it reaches the top, the spraying of the release agent and the rotation of the wire rotating brush 29 are stopped, the rotation motor 26 is reversed, and the cleaning cart 14, 14 is returned to both hems of the guide rails 10, 10'.

To explain the operation of this keren cart 14 in more detail, the frame 16 of the keren cart 14 is shown in FIGS. 3 and 4.
When the wire brush rotation motors (cyclo reducers) 32.32 provided on both sides of the shaft are started at the same time, the wire rotation brushes 29 are connected to the sprocket wheels 31.31 at both ends of the shaft 30 and the driving sprocket wheels of the motors 32.32 on both sides. Since the chains 34 and 34 are hung between the wire rotating brushes 29 and 33, the wire rotating brushes 29 are evenly rotated on both sides, allowing for even cleaning.

At the same time, the compressor 45 operates and the rear frame 16
' Special nozzle 44.44. The turning motor (cyclo reducer) 26 provided in the frame 16 is operated while spraying the stripping agent in synchronization with the turning speed of the cleaning cart 14, and the rotational force of the drive sprocket wheel 27 is The speed is reduced through the sprocket wheel 25 attached to the intermediate sprocket shaft 22, the small-diameter intermediate sprocket wheel 23, and the large-diameter intermediate sprocket wheel 20 fitted to one sprocket shaft 17, causing one sprocket shaft 17 to rotate at a low speed. .

Sprocket wheels 9 and 19 at both ends of this sprocket shaft 17 rotate, and this and guide rails 10 and 10
Since the chains 15 and 15 laid in the frame body 13 are engaged with the chains 15. After removing mortar scum from the outer peripheral surface F of the movable formwork F and cleaning it, special nozzles 44, 44.・・・・・・
・Apply an appropriate amount of concrete release agent uniformly on the outer circumferential surface F', sprayed at optimal intervals corresponding to the turning speed of the cleaning truck.

When the wire rotating brush 29 rotates, it pushes the outer circumferential surface F', so the cleaning stand 14.14 tries to float, but the floating prevention devices 35, 35.
...pressing roller, 43.43.・・・・・・
- are tension springs 41, 41. Since it rolls while pushing the side surface of the guide rail 10.10' by the elastic force of..., the lifting cart 14.14 is always held down toward the outer circumferential surface F' side in an elastic manner. , 14 are prevented from floating.

When the work at 1 is completed at the first cleaning work position, the moving motor 4 is activated again to move the frame 13 in the direction of arrow A in the same way as above, and stops at the next work position at 2, and the above is moved to the same position. When the cleaning operation is performed in sequence and the entire outer circumferential surface F' of the movable formwork F has been cleaned, the moving motor reverses and pulls the frame body 13 back in the direction of arrow B, and the movable formwork is removed. After the concrete is placed in a place where it will not interfere with concrete pouring at the end in the advancing direction of F (arrow P), predetermined concrete pouring is performed.

Concrete pouring work within the tunnel excavation surface T progresses by repeating the above operations one after another.

(Effects of the invention) The present invention is based on a movable formwork for pouring tunnel concrete.The outer peripheral surface of the movable formwork is equipped with a horseshoe-shaped guide rail that can be freely moved in and out in the axial direction. A special anti-float device is installed on the rear frame of the cleaning cart, and a special nozzle for spraying the stripping agent that can be adjusted to the optimum interval and amount in response to the turning speed of multiple cleaning carts is installed, and a wire rotating brush is installed. While rotating, and spraying release agent from a special nozzle onto the outer peripheral surface of the movable formwork in synchronization with the turning speed of the cleaning truck, the cleaning truck was rotated from both hems of the guide rail toward the top. Therefore, the mortar scum attached to the outer circumferential surface of the movable formwork can be automatically and quickly removed without the need for work to enter the narrow gap between the tunnel excavation surface and the outer circumferential surface of the movable formwork. The concrete release agent can be sprayed uniformly on the surface of the tunnel, dramatically improving the efficiency of concrete pouring work for tunnels, and at the same time significantly increasing safety.

Furthermore, since the cleaning cart is equipped with a floating prevention device, the cleaning work can be performed reliably and uniformly, which is unique to the present invention.

Furthermore, the present invention allows the special nozzle for the stripping agent attached to the cleaning truck to be adjusted to the optimum gap and spray amount for intermittent injection in accordance with the rotation speed on the guide rail of the cleaning truck. It also has an extremely economical effect as it eliminates wasteful spraying and significantly saves on stripping agent.

[Brief explanation of the drawing]

Figure 1 is a front view of the route of the excavated tunnel in which the present invention was implemented, Figure 2 is a side view of the route near the front end of the movable formwork, Figure 3 is an enlarged cross-sectional plan view of the same carnage, and Figure 4 is It is the same side view. Explanation of the symbols of the main parts, 1...Moving formwork cleaning device for tunnels, 4...Moving motor, 7...
...Moving connecting rod, 9...Moving beam, 10.10
'...Guide rail, 13...Frame body,
14...Keren trolley, 15...Chain (inside the guide rail), 16...Frame (
(of Keren truck), 16'... Rear frame (of Keren truck), 19... Rotating sprocket wheel (drive side), 19'... Rotating sprocket wheel ( driven side), 29... Wire rotating brush, 35... Lifting prevention device, 44...
...Special nozzle for release agent spray, 45...
Compressor, 46...Removal agent tank, 47
...Air hose, 48...Removal agent supply hose, F...Moveable formwork (for tunnel concrete placement), F'...Outer peripheral surface (same as above) of).

Claims (1)

[Scope of utility model registration request] A frame body 13 that can be freely moved in the axial direction is provided on the outer circumferential surface F' of the movable form F for tunnel concrete pouring, and the movable connecting rod 7 of the moving device provided at the tip of the movable form F and the frame body 13 are connected to each other. Connected to the movable beam 9 at the top, wire rotating brushes 29 are installed in the frame 16 on both sides of the horseshoe-shaped guide rails 10 and 10' of this frame 13, and floating prevention devices 35 are installed on the outside of the four corners of the frame 16. , and a cleaning truck 14 having a plurality of special nozzles 44 for spraying a release agent is fitted to the rear frame 16', and the driving rotation sprocket wheels 19, 19 and the driven rotation sprocket wheel 19' of the cleaning truck 14 are fitted to the rear frame 16'. , 19' are engaged with the chains 15.15 laid in the guide rails 10, 10', and the compressor 45 is installed at the end of the moving frame type F with the special nozzles 44, 44'... and a stripping agent tank 46 are connected by an air hose 47 and a stripping agent supply hose 48, and a cleaning device and automatic stripping agent spraying device that sprays and applies a stripping agent at an intermittent spray amount at optimal intervals while synchronizing with the turning speed of the cleaning truck 14. Mobile formwork cleaning equipment for tunnels equipped with equipment.