JPS6123117Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for spraying concrete safely and efficiently by remote control on the inner surfaces of tunnels and other walls at high places and over large areas.

Conventionally, when spraying concrete on walls at high places and over large areas, scaffolding was erected and the spraying was carried out manually. However, as the spraying location was moved, the scaffolding had to be changed, resulting in poor work efficiency. For this reason, a movable stage has been used, but in either case, the concrete scatters during spraying, which is bad for the environment, and a safe and efficient concrete spraying device has been desired.

In view of the above-mentioned circumstances, the present invention provides a concrete spraying device that can easily, efficiently and safely spray concrete onto high-place, wide-area walls by remote control, and is driven by a horizontal rotation drive. The stage mount is rotatably attached to the front of the stage mount by a horizontal axis in the left and right directions, and rollers that extend long from side to side parallel to the axis and are rotatable at both ends are attached. a conveyor-belt-shaped nozzle slide member;
One end is rotatably attached to this nozzle slide member, and the other end is rotatably attached to the lower part of the stage mount, and the ends of the belt that wraps the roller from the bottom to the top are attached to both ends. A slide saddle is attached and driven left and right by a drive mechanism, and a nozzle is rotatably attached to the tip of a bracket attached to the top of the slide saddle and protruding forward by a left and right horizontal axis. The device includes a mounting bracket, a swinging member fixed to the rear outside of the nozzle mounting bracket and extending upwardly, and a drive mechanism that swings the tip of the swinging member back and forth.

The present invention will be explained in detail below with reference to the drawings.

FIGS. 1 to 5 show an embodiment of the present invention, and reference numeral 1 in the figures indicates a trolley for transporting and operating a concrete spraying device. In addition, below, front and back, left and right,
The vertical direction is shown based on FIG. 1. A swivel base 1c is provided on the truck 1 via a drive mechanism 1b that swivels in the horizontal direction above the caterpillar drive wheels 1a. A driver's cab 1d having an engine for driving various parts, a hydraulic system, etc. is attached to the upper part of the swivel table 1c. A base end portion of a first arm 1g of a parallel link mechanism is attached to the driver's cab 1d, which protrudes forward, is moved up and down by a hydraulic cylinder 1e, and has a locking member 1f at its tip. Further, the locking member 1f has a parallel link mechanism which is rotated with respect to the first arm 1g by a hydraulic cylinder 1h and has a side back surface 2a of the L-shaped saddle 2 rotatably attached to its tip. The base end portion of the second arm 1i is rotatably attached. The above-mentioned L-shaped saddle 2 is the first and second part of the parallel link mechanism.
The lower side upper surface 2b is always held horizontally by the arms 1g and 1i.

A stage mount 3 is provided above the upper surface 2b of the lower side of the L-shaped saddle, and is horizontally rotated by a mount rotation drive mechanism 3a. A work stage 4 is detachably attached to the upper part of the stage mount 3. In addition, in front of the stage mounting base 3, there is a bracket 3 that protrudes forward.
b, 3b are provided. A belt conveyor-shaped nozzle slide member 5 extending long in the left-right direction is rotatably attached to the front brackets 3b, 3b by horizontal shafts 3c, 3c in the left-right direction. In addition, the lower bracket 5a of the nozzle slide member 5 and the lower bracket 3 of the stage mounting base
d, both ends of the hydraulic cylinder 6 are rotatably attached.

As shown in FIGS. 3a and 3b, the nozzle slide member 5 has support plates 5b on both ends, respectively.
A pair of slide frames 5d each having a rectangular U-shaped cross section and to which the flange unit mounting plate 5c is attached are arranged so that the U-shaped recesses face each other. The support plates 5b, 5b include
A roller shaft 5f to which a sprocket 5e is fixed at the center is rotatably mounted. Rollers 5g, 5g are rotatably attached to this roller shaft 5f, sandwiching a sprocket. Further, the tips of tension members 5i, 5i are attached to the support plate outer bearing portions 5h, 5h of the roller shaft 5f, and the slide frame 5d at the other end
The tension of the chain 8 is adjusted by sliding the support plates 5b, 5b relative to the slide frame 5d using bolts attached to the outside of the roller shaft 5f and adjusting the roller shaft 5f. Further, the flange unit mounting plates 5c, 5c are equipped with a roller part having the same structure as the roller part mounted on the support plate 5b, but the flange unit mounting plate 5c is attached to the slide frame 5d.
, and therefore the tension member 5
There is no i, and a hydraulic motor is attached to the outside of the flange unit mounting plate 5c to rotate the roller shaft 5f.
In addition, the rollers 5 at both ends of the nozzle slide section
A cover belt 5m is attached to the slide frames 5d and 5g, extending from the bottom to the top, and both ends of the cover belt connect to the rectangular plate 7a at the top of the slide saddle 7, which is attached to the slide frames 5d and 5d so as to be movable in the left and right direction. is attached at both ends. As shown in FIGS. 4a and 4b, the slide saddle 7 has opposing U-shaped slide frames 5d and 5.
The lower car 7b is guided to the opposite U-shaped recess of d.
..., a side wheel 7c provided at the front and rear of the slide saddle 7 and abutting against the inner surface of the side of the U-shape, and a rectangular plate 7a to which the belt 5m above is attached. Locking brackets 7d, 7d are provided below the left and right ends of this rectangular plate. The locking brackets 7d, 7d are equipped with a chain 8, in which the sprockets 5e, 5e are arranged from the bottom to the top.
are attached at both ends. Further, near both inner ends of the nozzle slide member 5, there are stoppers 7e, 7 for regulating the movement of the slide saddle 7 in the left and right direction.
e is provided.

Further, a tensioner 9 is provided on the outside of the slide frames 5d, 5d close to the support plates 5b, 5b, and the tension of the cover belt 5m is adjusted by moving the tension roller 9b up and down using the tension bolt 9a. It is beginning to be set up. In addition, the cover belt 5m to prevent foreign objects is
In the lower part, it passes over support rollers 5n attached at appropriate intervals, and in the upper part, it slides on the upper side surface of a U-shaped slide frame 5d.

Further, a bracket 10a projecting forward is fixed to the upper part of the rectangular plate 7a of the slide saddle 7. Between the tips of the brackets 10a, 10a, the cylinder axis of the cylindrical nozzle support fitting 10 is aligned with the left and right horizontal shafts 10b, 10b.
It is rotatably mounted so as to be perpendicular to b. When the cylinder axis is perpendicular, a swinging member 1 extending upward is provided on the rear outer side of the nozzle support fitting 10.
0c is fixed. A swing link 10e, one end of which is rotatably attached to a motor 10d at an eccentric position, is rotatably attached to the tip of the swing member 10c. Note that the nozzle support fitting 10 includes a concrete spray nozzle 11.
are fitted and fixed.

Next, the operation of the concrete spraying robot of the present invention constructed as described above will be explained.

When spraying concrete, follow the steps below. (1) Drive the trolley 1 and move it to the concrete spraying location. (2) Attach the concrete spray nozzle to the nozzle support fitting 10. (3) The position of the spray robot on the L-shaped saddle 2 is moved closer to the wall surface to be sprayed by the vertical movement of the first and second arms 1g, 1i and the rotation of the trolley rotation mechanism 1b. At this time, the work stage 4 is normally removed because it will be contaminated by the sprayed concrete. (4) The direction of the stage mount 3 is appropriately determined depending on the spraying position by the stage mount rotation mechanism 3a. At this time, as shown in FIG. 2, the position of the stage mounting base 3 can be freely selected within a range of 180°C. (5) Operate the hydraulic cylinder 6 to rotate the nozzle slide member to appropriately determine the direction of the spray nozzle 11. (6) Hydraulic motor 5
j to move the slide saddle 7 via the chain 8. At this time, the chain 8 is stretched by a tension member, and the belt 5m is
Since an appropriate tension is applied by operating the tension bolt 9a of the tensioner 9 and moving the tension roller, the slide saddle 7 can be easily moved by the chain 8 and at the same time Since the belt 5m, whose both ends are attached to the slide saddle 8, slides over the top surface of the nozzle slide member 5, the sprayed concrete does not enter the inside of the nozzle slide member. (7) Drive the motor 10d to swing the nozzle 11 and spray concrete as shown in Figure 5a.

All of the above operations are performed from the driver's cab, so the stage mounting base 3 can be rotated while spraying.
The expansion and contraction of the hydraulic cylinder 6 causes the spray nozzle 11 to rise and fall, move left and right on the nozzle slide member 5, swing the spray nozzle, move the device up and down by the first and second arms, and stop the movement at an appropriate position. , the operator can easily spray concrete over a wide area by remote control.

As described above, the concrete spraying device of the present invention allows the position, direction, and intermediate stop of the spray nozzle to be freely controlled by remote control, and the tip of the nozzle is moved by rocking, so it can be efficiently applied to large wall surfaces. Concrete can be sprayed safely, and since the nozzle slide member, which is most likely to be covered with concrete splashes or break down if foreign objects get into it, is covered by a belt, concrete splashes do not get in and there are almost no breakdowns. It has many advantages such as

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a side view of the device attached to the tip of the arm of a truck, Figure 2 is a plan view taken in the direction of the - arrow in Figure 1, Fig. 3a is a plan view of the nozzle slide member, Fig. 3b is a side view taken in the direction of - arrow in Fig. 3a, Fig. 4a
is a plan view of the slide saddle, and Fig. 4b is a plan view of the slide saddle.
Fig. 5a is a side view showing the swinging part of the spray nozzle, and Fig. 5b is a side view shown in Fig. 5a.
FIG. 1...Dolly, 1d...Driver's cab, 1e...Hydraulic cylinder, 1g...First arm, 1h...Hydraulic cylinder, 1i...Second arm, 2...L-shaped saddle, 3...Stage mounting base , 3a...Mounting base rotation drive mechanism, 3b...Front bracket, 3c...
Axis, 3d... Lower bracket, 4... Work stage, 5... Nozzle slide member, 5a... Lower bracket, 5b... Support plate, 5c... Flange unit mounting plate, 5d... Slide frame, 5e... Sprocket, 5f...Roller shaft, 5g...Roller, 5h...Bearing part, 5i
...Tension member, 5j ...Hydraulic motor, 5
m...Cover belt, 5n...Support roller, 6
... Hydraulic cylinder, 7 ... Slide saddle, 7
a... Rectangular plate, 7b... Lower wheel, 7e... Side wheel, 7d... Locking bracket, 7e... Stopper, 8... Chain, 9... Tensioner, 9a
... Tension bolt, 9b ... Tension roller, 10 ... Nozzle support fitting, 10a ... Bracket, 10b ... Horizontal shaft, 10c ... Swing member, 10d ... Motor, 10e ... Swing link, 11... Spray nozzle.

Claims (1)

[Scope of utility model registration request] a stage mounting base that is driven to rotate in the horizontal direction;
A belt conveyor-like belt is attached to the front of the stage mounting base so as to be rotatable by a horizontal axis in the left and right directions, and extends long from side to side parallel to the axis, with rotatable rollers attached to both ends. A nozzle slide member, a hydraulic cylinder whose one end is rotatably attached to the nozzle slide member and whose other end is rotatably pivoted to the lower part of the stage mount, and a belt that wraps the roller from below to above. A slide saddle whose ends are attached to each end and is driven left and right by a drive mechanism, and a bracket attached to the top of this slide saddle and projected forward, which is rotated by a horizontal axis in the left and right directions. A nozzle mounting bracket that is freely attached, a swinging member that is fixed to the rear outside of the nozzle mounting bracket and extends upward, and a drive mechanism that swings the tip of the swinging member back and forth. Concrete spraying equipment.