JPH0353990B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic rotary spraying device for spraying, for example, mortar, seeds, soil, paint, etc. onto the slope of a slope at a civil engineering work site, etc. .

Prior art: Prevention of collapse of slopes and cut surfaces of earth and sand;
In addition, when applying soil to the slopes and cut surfaces, spraying seeds for greening, and renovating the exterior of buildings, conventional work methods do not apply soil to the slopes of slopes and cut surfaces of earth and sand. Regarding construction, the following construction methods were used.

FIG. 16 is a diagram illustrating a conventional technique for spraying work such as mortar onto a slope 1 on a slope, and FIG. 17 is a front view of FIG. 16.
The prior art will be explained with reference to FIGS. 16 and 17. BACKGROUND ART Conventionally, when a hilly area is excavated at a civil engineering work site or the like, protection work is carried out by spraying mortar or the like onto the slope 1 of the obtained slope in order to prevent the slope 1 from collapsing. Conventionally, in such protection work, a lifeline 4 is fixed to, for example, a standing tree 3 at a stepped portion 2 above the slope 1 where spraying is performed. A worker 5 stands on the slope 1 wearing this lifeline 4, and sprays concrete mortar, soil, seeds, etc. installed on the lower step 6 below the slope 1 through a spray hose 7 to the worker 5. Concrete mortar, soil, seeds, etc. are sprayed onto the slope 1 from the supply device 8 which is force-fed to the position 5.

This kind of spraying work is done as shown in Figure 17.
Carrying the spray hose 7 on one shoulder, for example,
The life line 4 fixed to the body is fixed to, for example, the waist, and the machine gradually descends along the slope 1 centering on the maximum inclination line l1 while swinging by an angle θ in the left and right directions (left and right directions in Fig. 17), and performs the spraying work. I was doing it.

Problems to be Solved by the Invention In the spraying work using the conventional construction technique as described above, the worker 5 stands on the slope 1 while holding on to the life line 4, so there is a risk of the life line 4 being damaged or attached to the worker. There was a great danger that worker 5 could fall from slope 1 due to a mistake, resulting in a fatal accident. In addition, in this kind of spraying work, the worker carries out spraying by pointing the spray hose 7 carried on his shoulder toward the slope 1 and rotating the tip of the spray hose 7 in an arc shape, so that the mortar from the spray hose 7 is sprayed. In many cases, the spray direction is not perpendicular to the slope 1, and as a result, a large amount of the sprayed mortar hits the slope 1 and bounces back.
There were problems such as uneven spraying.

In addition, as workers rely on a lifeline on steep slopes and carry supply hoses from below on their shoulders, they are extremely fatigued and can also cause dust-related illnesses.
The danger to humans was great.

Furthermore, when the spraying work with the lifeline 4 fixed to the standing tree 3 shown in FIG. 17 is completed, in order to move to the next spraying work area on the left and right sides of FIG. 4 to a standing tree 3a or the like at a predetermined position, and the above-mentioned work had to be repeated, making the work unnecessarily complicated.

Scaffolding was built around the outside of the building, and the spraying work was carried out manually using a spray gun.

The purpose of the present invention is to solve the above-mentioned problems, and to make it possible to carry out mortar spraying work, for example, much more easily, to further improve safety in such work, and to make it mechanically uniform. It is an object of the present invention to provide an automatic rotary jet spraying device that can perform spraying and significantly improve work quality.

Means for Solving the Problems The present invention provides: a traveling drive means; a longitudinal support member pin-coupled to the travel drive means and extending in a direction away from the travel drive means; and an angular displacement of the longitudinal support member with respect to the travel drive means. a working body that moves along the longitudinal support means; a rotating member attached to the working body and rotatable about an axis substantially perpendicular to the axis of the longitudinal supporting member and the spraying surface; and an axis of the rotating member. a nozzle mounted at a position offset from the spraying surface; and means for pumping the fluid to the nozzle, the nozzle maintaining a perpendicular attitude to the spraying surface during the jet spraying operation, and ensuring that the nozzle tip and the spraying surface are in contact with each other. The nozzle automatically rotates in an arc to perform the spraying operation while maintaining an equal distance from the surface, and the traveling drive means is moved in synchronization while rotating the rotating body to spread the spray over the surface. The automatic rotary spraying device is characterized in that the spraying surface is sprayed with a uniform thickness.

Operation The automatic rotary jet spraying device according to the present invention runs from a nozzle of a rotary member attached to a working body that travels by a traveling drive means and moves along a longitudinal support member pin-coupled to the traveling drive means. , Spray the fluid by spraying it from the right angle to the spraying surface. At this time, the nozzle is mounted at a position offset from the axis of the rotating member, and the rotating member is rotatable about an axis substantially perpendicular to the axis of the longitudinal support member and the spray surface.

Therefore, in the above-described spraying operation, while rotating the rotary member, the longitudinal support means to which the rotary member is attached is moved in conjunction with the traveling drive means. In other words, the nozzle draws an arc,
It moves in parallel and sprays the fluid onto the spraying surface.

Therefore, when spraying a fluid onto a spraying surface using such a spraying device, there is no need for an operator to manually spray the fluid by attaching it to the spraying surface, greatly improving work safety. be done. Furthermore, since the nozzle always performs the spraying operation while facing perpendicularly to the spraying surface, unevenness on the spraying surface is prevented from occurring. Furthermore, since the above-described spraying operation can be performed automatically and continuously over the entire required area of the spraying surface, the working time is significantly shortened.

Embodiment FIG. 1 is a front view of an injection device 11 which is an automatic rotary injection spraying device according to an embodiment of the present invention, and FIG. ), and FIG. 3 is a side view of the upper truck 18. The basic configuration of the injection device 11 will be explained with reference to FIGS. 1 to 3. Injection device 11 of this embodiment
The purpose of the present invention is to easily and evenly spray mortar, for example, onto a slope 14 of a slope 13 at a construction site where a mountainside is being excavated, such as a dam construction site. Slope 13 as shown in the first diagram
There is a flat stepped portion 15a, 15 between each slope 14 of
b (collectively designated by reference numeral 15 where necessary) are formed. Rails 16a and 16b (generally referred to as reference numeral 16 when necessary) are installed on such stepped portions 15a and 15b, respectively. Each rail 1
A lower truck 17 and an upper truck 18, which are traveling drive means, are respectively arranged on 6a and 16b. The lower truck 17 and the upper truck 18 are driven to travel in the same direction and at the same speed in synchronization by hydraulic or electric motors 83 and 84, respectively.

A pair of guide frames 20 and 21, which are longitudinal support means, are arranged on the lower truck 17 and are pin-coupled to a bracket 19 provided on the lower truck 17. The guide frames 20 and 21 are made of a lightweight material, such as aluminum alloy. The guide frame 20 includes, for example, four pillars 22, 23, 24, 25, and a large number of beam members 26 are provided between these pillars.
support so that they are fixed to each other.

A bracket 2 is attached to the lower end of the guide frame 20.
7 is provided and is pin-coupled to the bracket 19 of the lower truck 17 for angular displacement as described above. Here, regarding the pillars 22 to 25, the pillars 22 and 2 in the direction perpendicular to the slope 14 (hereinafter referred to as the vertical direction)
4; The length L1 between 23 and 25 may be, for example, about 400 mm, and the support columns 22, 23; 24, 25 in a direction perpendicular to the longitudinal direction (hereinafter referred to as the lateral direction)
The length L2 between them may be, for example, about 200 mm. Further, a so-called pin rack 28 is fixed to the guide frame 20 so as to extend parallel to the longitudinal direction of the guide frame 20. Guide frame 21
The guide frame 20 also has a configuration similar to that described above with respect to the guide frame 20, and when necessary, reference numerals 22 to 28 used in connection with the guide frame 20 are indicated with a suffix a.

In the work body 12 which can be reciprocated in the longitudinal direction along the guide frames 20 and 21, a pair of side frames 30 and 31 are fixed to both lateral ends of a step board 29 provided in a substantially horizontal position. The side frame 30 includes a plurality of support plates 32, 33,
34 extends and is fixed to the guide frame 20 side,
For example, three rollers, which will be described later, are used for these support plates 32 to 34, and support the support column 24 at three points, for example. A similar configuration is provided for the side frame 31 as well.

A hydraulic or electric motor 35 is fixed to the footboard 29 . A sprocket wheel 38, which meshes with the pin racks 28, 28a, through a power transmission mechanism 36, 37 realized by a plurality of gear groups, etc.
Power is transmitted to 38a. A frame 39 having an overall cylindrical configuration is fixed to this footboard 29. A rotating body 40 that is rotatable around an axis perpendicular to the slope 14 is arranged in relation to the frame 39 . The rotating body 40 has a hydraulic pressure fixed to the work body 12,
Alternatively, as will be described later, it is rotationally driven by a sprocket wheel 43 provided at the other end of a flexible power transmission shaft 42 connected to the output shaft of the electric motor 41 and configured to be described later.

A nozzle 44 is fixed to this rotating body 40 at a position eccentric from the rotation center as described later, and this nozzle 44 has a rotating tube supported at a fixed position by a support member 45 provided on the work body 12. Fitting 4
6 by a flexible tube 47. For example, concrete mortar, seeds, soil, etc. are fed under high pressure to the rotary pipe joint 46 from a mortar supply plant (not shown), which will be described later, through a supply hose 48 . Further, a working section having a handrail 50 is formed on the step board 29, on which a worker can perform various tasks while riding.

A bracket 52 having a hydraulic jack 51 fixed to its tip is fixed to the upper truck 18. A drive shaft 53 of the hydraulic jack 51 is pin-coupled to a fixing member 54 that fixes the guide frames 20 and 21 to each other at their upper ends. Note that the upper truck 18 has a direction in which the upper truck 18 moves (arrow A1 in FIG. 3).
A protruding support rod 55 is disposed at a portion (indicated by ). The support rod 55 is angularly movable around the fulcrum 56. The vicinity of the tip of the support rod 55 is bent toward the stepped portion 15b, and the upper carriage 18 is attached to the tip of the support rod 55.
As the step progresses in the direction of arrow A1, the stepped portion 15b
A rotatable roller 57 is attached along.

The rollers 57 are located ahead of the upper truck 18 in the traveling direction and are therefore displaced in accordance with the displacement of the rail 16b in the vertical direction. Angular displacement as shown in . This angular displacement amount is detected by an angular displacement detection device 59.

Assuming that the upper truck 18 is displaced in accordance with the vertical displacement of the rail 16b, the guide frames 20, 2 as shown in FIG.
1 is angularly displaced around the pin 60. Therefore, the vertical posture of the nozzle 44 with respect to the slope 14 is inhibited, and the rebound loss of the sprayed fluid becomes large. This will also cause uneven spraying of seeds, soil, etc. Therefore, the angular displacement detection device 59 sends a signal to the hydraulic motor 61 to cause the drive shaft 53 of the hydraulic jack 51 to expand and contract, thereby controlling the nozzle 44 so that it always maintains a vertical posture with respect to the slope 14.

Here, the support rod 55 and roller 57 are
Although the explanation has been made as a configuration in which the upper truck 18 is provided only in the traveling direction (arrow A1 direction), this is for the purpose of simplifying the explanation, and the upper truck 18 is provided only in the direction of arrow A1.
When traveling backward in the opposite direction (arrow A2 direction), the rail 16b may also be provided in the arrow A2 direction so that vertical displacement of the rail 16b can be detected.

FIG. 4 is a road cross-sectional view taken along the section line - in FIG. 2. With reference to FIGS. 1 and 4,
The configuration related to the guide frame 20 will be explained. As mentioned above, the workpiece 1 with respect to the support 23
The support member 33 from 2 has three support rollers 6
2, 63, and 64 are provided, and contact the support column 23 from three directions, providing so-called three-point support for the support column 23.

On the other hand, the vertical support 25 with respect to the support 23
In connection with this, such support rollers 62 to 64, in which a press roller 65 rotatably supported by a support member 33a with respect to the work body 12 is arranged at a position facing the support roller 63, and a press roller 65 is shown in FIG. 2.
The remaining supporting members 32, 33, etc. other than 3 are similarly provided, and the structure for supporting the work body 12 with respect to the guide frame 20 is similarly provided with respect to the guide frame 21. Therefore, the swinging of the work body 12 in the direction of arrow A3 is prevented by the support rollers 62 and 64, and the swinging in the direction of arrow A4 is prevented by the support roller 63 and the holding roller 65. Therefore, the work body 12 does not swing unnecessarily in the directions of arrows A3 and A4.
It can move along guide frames 20, 21.

5 is a front view of the rotating body 40 viewed from the radial direction, FIG. 6 is a view of the rotating body 40 viewed from the axial direction, and FIG. 7 is a perspective view of the rotating body 40.
With reference to FIGS. 2 and 5 to 7, the rotating body 40
The configuration related to this will be explained. As described above, the rotating body 40 is surrounded by a frame 39 having a shape as described below. frame 39
Brackets 66 are provided at a plurality of positions in the circumferential direction of the rotating body 40, and support rollers 67 each have a rotation axis parallel to the radial direction of the rotating body 40.
is placed.

The support roller 67 contacts the peripheral edge of the rotating body 40 and supports the rotating body 40 from below (from below in FIG. 4) so that the rotating body 40 can rotate freely. Further, in order to prevent the rotating body 40 from being displaced upward in FIG.
A press roller (not shown) having a rotation axis parallel to the support roller 66 may be provided at the opposite position. Further, this rotary body 40 is provided with a support member 69 that protrudes radially inward, and a rotary pipe joint 70 is attached to this support member 69.
For example, concrete mortar,
A nozzle 44 that spouts fluids such as seeds and soil in the direction of arrow A5 is fixed. This nozzle 44 is
It is fixed at a position offset by a distance L1 with respect to the axis 72 of the rotating body 40.

On the other hand, a pin rack 73, for example, is fixed to the radially outer peripheral portion of the rotating body 40 over the entire circumference in the circumferential direction, and meshes with the sprocket wheel 38 having a rotation axis parallel to the axis 72. Moreover, instead of this pin rack 73, a spline that engages with the sprocket foil 38 may be formed.
Such a rotating body 40 is a sprocket wheel 3
8 rotates at a rotational speed of 3 revolutions per minute, for example.

FIG. 8 is a perspective view showing a partially cut away frame 39 provided surrounding the rotating body 40 shown in FIG. 7. FIG. The configuration of the frame 39 will be described with reference to FIGS. 1 and 8. frame 39
includes a basically annular attachment member 74 provided on the guide frames 20 and 21 side, and a support member 75 also annular in shape and arranged coaxially with the attachment member 74 on the slope 14 side. The mounting member 74 and the support member 75 are coaxially fixed to each other by, for example, three connecting members 76. The support member 75 has a frame 39 attached to the work body 12, for example, a footboard 2.
A flat mounting portion 77 is formed for fixing to 9. The frame 39 connects this mounting portion 77 to the work body 1.
2, for example, by bolting to the footboard 29.

The support member 75 is formed of a member having a U-shaped cross section and configured into an annular shape. Attachment member 7 of support member 75
A mounting cylinder 78 is fixed to the surface opposite to 4 along the entire periphery of the radially outer peripheral edge thereof.
For example, three brackets 66 as described above are formed on the inner circumferential surface of the mounting tube 78 at intervals in the circumferential direction. That is, the mounting member 7 of this bracket 66
The support roller 67 (see FIG. 5) is attached to the 4 side.

FIG. 9 shows the nozzle 71 described with reference to FIG.
FIG. As mentioned above, the main pipe 79 of the nozzle 71 contains, for example, concrete mortar,
Seeds, soil, etc. are fed under pressure, and mortar, etc. fed under pressure from the main pipe 79 are sent to the branch pipes 80 and 81 through the spout 8.
Compressed air and the like for jetting out at high pressure are supplied from 2.

FIG. 10 is a sectional view illustrating the basic structure of the power transmission shaft 42 described with reference to the first embodiment. The power transmission shaft 42 includes a steel wire bundle 85, which is a bundle of many wires such as steel wires, and is wound around a band-shaped coil 86. The power transmission 42, in which the coil 86 is covered with a covering material 87 made of, for example, rubber, has flexibility as a whole and can transmit rotational torque.

11 is a diagram illustrating the operation of the injection device 11 of this embodiment. The operation of this embodiment will be described with reference to FIGS. 1 and 11. Slope 1
The injection device 11 having the above-described configuration and provided between the stepped portions 15a and 15b of No. 3 transmits the rotational torque of the motor 41 to the sprocket wheel 43 through the power transmission shaft 42, and The rotating body 40 is rotationally driven by the rotation of 43. At this time, concrete mortar, for example, is fed under pressure from a supply plant 49 to the nozzle 44 provided on the rotating body 40 via a supply hose 48, and is injected from the nozzle 44 in a direction perpendicular to the slope 14.

Also, at this time, the tip of the nozzle 44 and the slope 14
The distance D2 may be approximately 700 mm to 900 mm, and may be greater or less than that. Such a distance D2 is determined by, for example, concrete mortar seeds sprayed from the nozzle 44.
The spraying width of the soil etc. that is sprayed as the rotating body 40 rotates is, for example, about 20 to 30 cm, and the width D3 of the band-shaped shotcrete mortar portion 88 obtained by spraying in this way is:
For example, the length is chosen to be around 30cm.

After the injection device 11 is assembled on the slope 14 as shown in FIG. 1, the lower truck 17 and The upper truck 18 is driven to travel in the direction of arrow C2 at a speed of, for example, about 1 m/min. In this way, concrete mortar seeds, soil, etc., which are sprayed from the nozzle 44, are sprayed along the trajectory shown by the two-dot chain line l2 in FIG. 11 without leaving any unsprayed areas.

This injection operation of concrete mortar seeds and soil is performed from one end of the slope 14 in the horizontal direction to the other end, and the stopping position 8 at the other end is reached.
9, the injection device 11 stops the injection operation and descends along the guide frames 21, 22 by a predetermined length D4. Next, the injection device 11 travels in the direction of arrow C3 while performing the injection operation from the nozzle 44 as described above. By repeating similar operations thereafter, the slope surface 14 can be sprayed to a uniform thickness over the entire surface.

In addition, the fluid sprayed onto the slope 14 may no longer be sprayed from the nozzle 44 due to blockage in the supply hose 48, or the fluid may not be sprayed from the nozzle 44 due to blockage in the supply hose 48, or the fluid may be affected by the rotational speed of the rotating body 40 and the left and right directions of the guide frames 20 and 21. If the traveling speed of the vehicle is no longer synchronized with the amount of fluid to be injected, the following operations may be performed. In other words, the operator visually recognizes this condition and adjusts the guide frame 2.
0, 21 may be returned to the spray joint position and the spraying operation may be started again from this joint position.

As explained in the prior art section, this type of injection operation of concrete mortar seeds, soil, etc. does not require the worker to attach himself to the slope 14 using, for example, a life line, which improves the safety of the work. sex is significantly improved. Further, as described above, the nozzle 44 is held perpendicular to the slope 14 during the entire period during which concrete mortar seeds and soil are sprayed over the entire surface of the slope 14. For example, even if the rail 16b is displaced in the vertical direction at the stepped portion 15b, the angular displacement detection device 59 or the like detects this displacement in advance as described with reference to FIG. Therefore, the guide frames 20 and 21 are angularly displaced around the pin 60, and the nozzle 44 is controlled to always maintain a direction perpendicular to the slope 14. Therefore, slope 14
When spraying concrete mortar seeds and soil onto concrete, the occurrence of so-called splashing is kept to an extremely low level, and unevenness can be prevented from occurring.

In addition, when spraying the entire surface of the slope 14, as explained in the prior art, the worker climbs up to the step 15b at the top of the slope 14 after each work period for a certain period of time, and
Complicated work such as tying and fixing the lifeline 5 at a different position and continuing the work again becomes unnecessary, and work efficiency is improved by, for example, 5 to 6 times or more.
Furthermore, each part of the injection device 11 having the above-mentioned configuration is fixed in a disassembly manner with, for example, bolts, so that when the spraying work on one slope 14 is completed, this injection device 11 can be removed. It can be disassembled and easily transported to different slopes.
Therefore, workability is further improved.

FIG. 12 shows an injection device 1 according to a second embodiment of the present invention.
It is a front view of 1a. This embodiment is similar to the embodiment described above, and corresponding parts are provided with the same reference numerals.
What is noteworthy about this embodiment is that two guide frames 2 are used as longitudinal support members in the previous embodiment.
0 and 21, a single guide frame 20 is provided. This guide frame 20 may have a configuration similar to that of the guide frame 20 described in the previous embodiment, and the work body 12a is provided in the same manner as in the previous embodiment.

This work body 12a is the work body 1 of the above-mentioned embodiment.
2a (see FIGS. 1 to 3) are pin racks 2 provided on the guide frames 20 and 21, respectively.
8, 28a (see Fig. 2) using sprocket wheels 38, 38a that mesh with the guide frame 2.
In contrast to the structure in which the single guide frame 20 is moved up and down in the longitudinal direction, in this embodiment, at least one of the left and right side parts in the horizontal direction (the left and right direction in FIG. 12) of the single guide frame 20, A pin rack as described above may be provided and the guide frame 20 may be moved in the longitudinal direction by means of a sprocket wheel or the like that engages with the pin rack.

Hereinafter, FIG. 1 and FIG. 2 will be referred to together.
The work body 12a in FIG.
Frame 39 having the configuration described with reference to the figures
is fixed. Inside the frame 39 is a rotating body 40.
are stored in the same manner as in the previous embodiment. This rotating body 4
0 means that the rotational torque of the hydraulic or electric motor provided on the work body 12a is transmitted by a power transmission mechanism such as a sprocket wheel and a pin rack (not shown) having the configuration as described in the previous embodiment. This is transmitted and drives the rotating body 40 to rotate.

The injection device 11a of this embodiment has a lower truck 17 and an upper truck 18, and the traveling movement of the lower truck 17 and the upper truck 18 in the directions of arrows C2 and C3 and the rotation of the rotating body 40 are combined. As a result, the same operation as that of the injection device 11 of the above-described embodiment described with reference to FIG. 11 and the effects described in the above-described embodiment can be realized. Further, in this embodiment, the injection device 11a is the first
The configuration is more compact and simplified than the injection device 11 described with reference to the drawings, and therefore it is easier to perform spraying operations using such an injection device 11a. can.

FIG. 13 shows an injection device 1 according to a third embodiment of the present invention.
It is a figure showing 1b. Injection device 11 of this embodiment
For example, a caterpillar 91 is used as a traveling drive means.
A crawler 92, which is a tracked vehicle such as the following, is used. The crawler 92 is provided with arms 93 that are extendable and retractable in multiple stages. arm 93
A support member 94 is connected, for example, by a pin to the tip of the support member 94.
can be angularly displaced in the direction of arrow E1 around an axis extending in the horizontal direction, and can be angularly displaced in the direction of arrow E2 around an axis extending in the longitudinal direction of arm 93.

The support member 94 includes a frame 3 facing the slope 14 and having a configuration similar to that described in the previous embodiment.
9 is provided, and a rotating body as described in the previous embodiment is housed inside the rotating body. In addition, the arm 93
is angularly displaceable around the horizontal axis in the direction of arrow E3, with the part where it is attached to the crawler 92 serving as a fulcrum.

Using the injection device 11b having such a configuration, as described with reference to FIG. 11, the crawler 92 is moved in the direction of arrow C2 while rotating the rotating body 40. At this time, as described in the above embodiment, the concrete mortar, soil, seeds, etc. injected from the injection device 11b follow the trajectory indicated by the two-dot chain line l2 and reach the slope 14.
spraying is carried out. Hereinafter, by appropriately combining the expansion and contraction displacement of the arm 93 in the direction of the arrow E4 and the travel movement of the crawler 92 in the direction of the arrow C2 or the direction of the arrow C3, the spraying work described in the above embodiment is carried out. and effects can be achieved. In addition, since the spraying device 11b of this embodiment uses a tracked vehicle as a running drive means, the spraying device 11b can run and move in any direction. Its convenience is further improved than that of the injection devices 11 and 11a.

FIG. 14 shows an injection device 1 according to a fourth embodiment of the present invention.
It is a figure showing the composition of 1c. This embodiment is similar to the previous embodiment, and corresponding parts are given the same reference numerals. In each of the above-mentioned embodiments, for example, concrete mortar, seeds, soil, etc. were sprayed automatically and in a uniform thickness onto the slope of a slope created at a civil engineering work site, etc. The embodiment is a face 95 and a side wall 9 in a tunnel.
6, it is intended to automatically and uniformly spray mortar, etc. The injection device 11c of this embodiment is a hydraulic excavator 9 which is a track running body using, for example, a caterpillar 91.
7, an injection mechanism 98 having a configuration as described later is detachably attached.

Hydraulic shovel 97 of the injection device 11c of this embodiment
has a first arm 100 that can be angularly displaced by a hydraulic jack 99; and a first arm 100 that is attached to the tip of the first arm 100 so as to be angularly displaceable; and a second arm 102 for carrying out the operation. Second arm 10
2, realized by, for example, H-shaped steel,
A sliding member 103 that can be freely displaced in the longitudinal direction of the second arm 102 by the expansion and contraction operation of the hydraulic jack 110
is provided. A holding member 104 is pin-coupled to the tip of the sliding member 103 with a pin 106 . Further, a hydraulic jack 105 provided on the sliding member 103 is connected to the upper end of the holding member 104 with a pin. Therefore, the holding member 104 is angularly displaced around the pin 106 in the direction of arrow F1 by the telescopic drive of the hydraulic jack 105.

The holding member 104 is provided with a supporting member 107, and the supporting member 107 can be angularly displaced in the direction of arrow F2 by a hydraulic motor 115 provided within the holding member 104. Moreover, inside the support member 107,
A hydraulic jack is built in, and the frame 39 is connected to the side wall 9.
Finely adjust the distance between 6 and the nozzle 44. The frame 39 described in the previous embodiment is fixed to the upper end of the support member 107, and the rotating body 40 is housed in the frame 39 as in the previous embodiment. It is rotationally driven in the direction of arrow F3. A support chuck 108 is provided at the lower end of the support member 107 and holds the supply hose 48 .
Here, the support member 107 and the frame 39, rotating body 40, etc. attached to the support member 107 may be used as the injection mechanism 98 and may be detachably attached to the holding member 104.

FIG. 15 is a diagram explaining the operation of the injection device 11c of this embodiment, and FIG. 15A is a diagram of the tunnel 109. The operation of the injection device 11c of this embodiment will be described with reference to FIGS. 14, 15, and 15A. The injection device 11c disposed within the tunnel 109 is positioned such that the nozzle 71 faces the lower end surface of the side wall 96 at a right angle. At this time, rough positioning is performed by the traveling movement of the hydraulic shovel 97, and accurate positioning can be performed by finely adjusting the sliding member 103 in the front-back direction using the jack 110 that moves the sliding member 103 in the front-back direction. Next, while spraying concrete mortar or the like from the nozzle 71, the rotating body 40 is driven to rotate as described in the first embodiment.
0 and frame 39 move along arrow G1 in FIG.
110, 105 expansion and contraction operations and support member 107
The rotation drive state in the direction of arrow F2 is controlled. These arrow G1 directions are directions in which a plane perpendicular to the axis of the tunnel 109 is parallel to the tolerance line with the side wall 96.

When spraying of concrete mortar, etc. is completed to the other lower end of the side wall 96 in this manner, the injection device 11c drives the caterpillar 91 in the direction of the arrow G1 in FIG. 15 to perform the operation described in the first embodiment. , and then starts a new spraying operation from the other lower end side of the side wall 96. By repeating such operations, the side wall 96 can be sprayed.

That is, the swinging operation of the hydraulic excavator 97 and the hydraulic jacks 99, 101, 105, 110 are controlled by the hydraulic motor 115 in the holding member 104, and the hydraulic motor 115 in the holding member 104 is
6, the frame 39 is rotated in a circumferential shape 360 perpendicular to the axis of the tunnel 109.
It can be rotated several times to perform spraying work.

In the injection device 11c of this embodiment, the injection mechanism 98 is removably attached to the hydraulic shovel 97 as described above, so when carrying out various construction works in the tunnel 109, the second arm 102 of the hydraulic shovel 97, etc. These various types of work can be carried out simply by replacing the mechanism attached to the tip.
Therefore, spraying of concrete mortar, etc. onto the side wall 96 as described above can be easily carried out.

Also, the side wall 9 near the face 95 in the tunnel 109
5 includes a support frame 11 made of, for example, H-shaped steel.
7 may be installed at intervals along the axial direction of the tunnel 109. In such a case,
The above-described spraying work of concrete mortar is performed from above this support frame 117. The spraying work on the side portion 118 of the support frame 117 on the face 95 side is performed by positioning the frame 39 further toward the face 95 side than the support frame 117 closest to the face 95.
The holding member 107 is angularly displaced in the direction of the arrow F1 by the hydraulic jack 105 so that the axis of the rotating body 40 faces the side portion 118 at right angles, that is, in the direction of the arrow F1.
Allow fluid to be sprayed in five directions. In this way, the spraying operation can also be carried out on the side portion 118 of the support frame 117 closest to the face 95 and further closer to the face 95.

In the first embodiment, the work of spraying concrete mortar, soil, seeds, etc. onto the slope 14 was explained as an example. It is also possible to clean the rock, for example with water, before starting work. In such a case, the type of nozzle 41 attached to the rotating body 40 may be changed, and a configuration may be used in which cleaning water is pumped to this cleaning water injection nozzle using, for example, a so-called jet pump. .

The injection devices 11, 11a, 11b, and 11c having the configurations in each of the above-described embodiments can be used, for example, on a slope 14 at a civil engineering work site or on a side wall 9 in a tunnel 109.
6, etc., but it goes without saying that it can also be used to paint the hulls of ships, for example, when manufacturing or repairing ships.

In each of the above-mentioned embodiments, the rotary torque for rotationally driving the rotary body 40 is transmitted by a sprocket wheel and a pin rack. For example, the rotational torque may be transmitted by winding a band-shaped body made of a material with a large frictional force, and using a rubber roller in contact with the sprocket wheel instead of the sprocket wheel. A wide variety of power transmission mechanisms can be used.

Effects As described above, according to the present invention, when spraying a fluid onto a spraying surface, the nozzle faces the spraying surface at right angles, and the nozzle is attached while spraying the fluid. The rotating member is rotated. Since this nozzle is attached at a position offset from the axis of the rotating member, the fluid jetted from the nozzle as the rotating member rotates is sprayed onto the spraying surface in an arcuate trajectory. In synchronization with the rotational drive of the rotating member, the longitudinal support member to which the rotating member is attached is laterally moved by the traveling drive means. That is, the nozzle moves in parallel while drawing a circular arc to spray the fluid onto the spraying surface.

Therefore, when spraying a fluid onto a spraying surface using such an automatic rotary spraying device, there is no need for an operator to attach to the spraying surface and perform the spraying work manually. Work safety is greatly improved. Furthermore, since the nozzle performs the spraying operation while always facing the spraying surface at right angles, the loss of the fluid bouncing back from the spraying surface is greatly reduced. It also prevents unevenness from occurring on the sprayed surface. Moreover, since the above-described spraying operation can be performed automatically and continuously over the entire required area of the spraying surface, the working time is significantly shortened.

[Brief explanation of drawings]

FIG. 1 is a front view of an injection device 11 according to an embodiment of the present invention, and FIG. 2 is a front view of a working body 12 in the injection device 11.
3 is a front view of the upper truck 18, FIG. 4 is a sectional view taken from the cutting plane line - in FIG. 2, and FIG. 5 is a side view showing the rotating body 40 in a radial direction 6 is a view of the rotating body 40 seen from the axial direction, FIG. 7 is a perspective view of the rotating body 40, FIG. 8 is a perspective view showing a partial cutout of the frame 39, and FIG. The figure is a perspective view of the nozzle 44, FIG. 10 is a sectional view explaining the basic configuration of the power transmission shaft 42 explained with reference to FIG. 1, and FIG. 11 is a perspective view of the injection device 1.
FIG. 12 is a diagram explaining the operation of No. 1, and FIG.
A side view showing the configuration of the injection device 11a of the embodiment,
Fig. 13 is a perspective view showing the structure of the third embodiment of the present invention, Fig. 14 is a side view showing the structure of the fourth embodiment of the invention, and Fig. 15 shows the spraying operation in this embodiment. The explanatory diagram, FIG. 15A, shows the tunnel 109.
FIG. 16 is a diagram for explaining the conventional spraying method, and FIG. 17 is a diagram for explaining the spraying operation in the conventional method. 11, 11a, 11b, 11c...injection device,
12, 12a... Working body, 14... Slope, 17...
...Lower trolley, 18... Upper trolley, 20, 21...
Guide frame, 22-25... Support, 28...
Pin rack, 35, 41... Hydraulic or electric motor, 38, 38a... Sprocket wheel, 4
0... Rotating body, 42... Power transmission shaft, 44... Nozzle, 51, 99, 101, 105... Hydraulic jack, 61... Hydraulic motor, 73... Pin rack, 88... Spraying mortar part, 91 ...Kayatapira, 92...Crawler, 96...Side wall, 97...
...Hydraulic excavator, 98...Injection mechanism, 109...
tunnel.

Claims (1)

[Scope of Claims] 1: a traveling drive means; a longitudinal support member pin-coupled to the travel drive means and extending in a direction away from the travel drive means; a drive means for angularly displacing the longitudinal support member with respect to the travel drive means; a working body that moves along the longitudinal support means; a rotating member that is attached to the working body and is rotatable about an axis substantially perpendicular to the axis of the longitudinal supporting member and the spraying surface; a nozzle to be attached, and a means for pumping the fluid to the nozzle, the nozzle maintaining a perpendicular attitude to the spraying surface during the injection spraying operation, and the nozzle tip and the spraying surface being equally spaced. The nozzle automatically rotates in an arc to perform the spraying operation while maintaining the same thickness, and the traveling drive means is moved in synchronization while rotating the rotating body to spray the above-mentioned material with a uniform thickness over the surface. An automatic rotary spraying device characterized by spraying a spray onto a spraying surface.