JP2022025876A - Fluid discharge device - Google Patents

Abstract

To have high portability while low power consumption is possible and corresponding downsizing and weight saving are achieved.SOLUTION: A fluid discharge device 122 comprises a discharge nozzle 140, a main body swivel joint structure 130, a main body rotary driving body 151, and a fluid joint structure 129 having a first flow passage member 129B and a second flow passage member 129A detachably engaged with the first flow passage member 129B. The first flow passage member 129B comprises a first engagement portion 129BE integrally provided on an outer peripheral portion, and the second flow passage member 129A comprises a second engagement portion 129AI integrally provided on an outer peripheral portion and capable of being in contact with the first engagement portion 129BE. When the first flow passage member 129B is engaged with the second flow passage member 129A, since the first engagement portion 129BE is in contact with the second engagement portion 129AI, relative rotation of the second flow passage member 129A with respect to the first flow passage member 129B is locked.SELECTED DRAWING: Figure 5

Description

The present invention relates to a fluid discharger.

Due to the nature of the work, dust and the like (hereinafter referred to as dust) are often generated at work sites where civil engineering work, construction work, demolition work, etc. are performed. In particular, in the (all or part) demolition work of a building (demolition object), it is inevitable that dust will be generated at the work site. If measures against dust are neglected, not only the working environment will deteriorate, but also dust will be scattered around and cause discomfort to the residents living in the vicinity of the site, and in some cases, damage to health. Therefore, various measures have been taken to suppress the scattering of dust due to the dismantling work.

For example, in the dust control system having a fluid discharger shown in Patent Document 1, in particular, the direction of the discharge nozzle of the fluid discharger is controlled by two electric rotary devices by remote control, and the amount of fluid discharge is controlled by an on-off valve. By doing so, the fluid is efficiently and accurately discharged to the work place at the work site.

Therefore, by using the fluid discharger of Patent Document 1, it is possible to eliminate the need for a worker who sprinkles water to suppress the scattering of dust accompanying the dismantling work. In other words, it is not necessary to place a worker near the work machine that performs the dismantling work, it is possible to suppress the exposure of the worker to dust, and it is possible to make the work environment of the worker safer while saving water at the work site. ..

Japanese Unexamined Patent Publication No. 2015-227568

Here, in the fluid discharger shown in Patent Document 1, the pipe connected to the discharge nozzle is bendable, so that the discharge nozzle can be rotationally inclined. However, conversely, when the pressure state of the fluid in the pipe changes, the load applied to the electric rotating device for controlling the direction of the discharge nozzle fluctuates greatly. Therefore, the present inventor reduces the fluctuation of the load applied to the electric rotating device by constructing all the pipes connected to the discharge nozzle with a rigid body and using a swivel joint to secure the inclination and rotation of the discharge nozzle. However, we are considering making it possible to achieve low power consumption and small size and light weight.

However, the fluid discharger needs to be of a reasonable size in order to discharge the fluid to a certain extent. Furthermore, since the fluid discharger is used at a work site where the movement is not flat and the movement is restricted, it is necessary to improve the portability.

Therefore, the present invention has been made to solve the above-mentioned problems, and is a fluid discharger capable of achieving high portability while achieving appropriate size and weight reduction while being able to reduce power consumption. The challenge is to provide.

The present invention is a fluid discharger that discharges a fluid capable of suppressing the generation of dust to a work place of a work object, in which the fluid discharger communicates with a discharge nozzle that discharges the fluid and the discharge nozzle. A main body swivel joint structure including a main body rotating side body that rotates integrally with the discharge nozzle and a main body fixed side body that rotatably supports the main body rotating side body, and a relative to the main body fixed side body. The main body rotation drive body that electrically drives the main body rotation side body, the first flow path member connected to the main body fixed side body, and the first flow path member are attached to and detached from the main body rotation side body along the rotation axis. It comprises a fluid coupling structure having a second flow path member that is possibly fitted, and includes a first engaging portion in which the first flow path member is integrally provided on an outer peripheral portion, and the second flow path is provided. When the member is integrally provided on the outer peripheral portion, the second engaging portion capable of contacting the first engaging portion is provided, and the first flow path member and the second flow path member are fitted to each other. The problem is solved by the contact between the first engaging portion and the second engaging portion, which locks the relative rotation of the second flow path member with respect to the first flow path member. It is a solution.

In the present invention, a main body swivel joint structure including a main body rotating side body that communicates with the discharging nozzle and rotates integrally with the discharging nozzle and a main body fixing side body that rotatably supports the main body rotating side body, and a main body fixing side. It is provided with a main body rotation drive body that electrically rotates and drives the main body rotation side body relative to the body. That is, since the pressure fluctuation of the fluid is applied in the rotation axis direction of the main body rotation side body, the influence of the pressure fluctuation is not so much around the rotation axis of the main body swivel joint structure. Therefore, the load on the main body rotation drive body that rotationally drives the main body rotation side body relative to the main body fixed side body has little fluctuation even if the fluid pressure fluctuates, and is supplied to the main body rotation drive body. It is possible to minimize the power margin and the output scale of the main body rotary drive body. At the same time, in the present invention, the fluid coupling structure includes a first flow path member connected to the main body fixed side body and a second flow path member detachably fitted to the first flow path member. That is, by adopting the fluid coupling structure, the fluid discharger can also divide the flow path through which the fluid flows, and can be divided for storage and transportation. Then, when the first flow path member and the second flow path member are fitted, the outer peripheral portion of the first engaging portion and the second flow path member integrally provided on the outer peripheral portion of the first flow path member. The relative rotation of the second flow path member with respect to the first flow path member is locked by the contact with the second engagement portion provided integrally with the first flow path member. That is, even if the fluid coupling structure is adopted, it is possible to prevent unexpected rotation at this portion, so that the rotation of the discharge nozzle by the main body rotation drive body can be stably realized.

According to the present invention, it is possible to reduce power consumption, and at the same time, it is possible to have high portability while achieving appropriate size and weight reduction.

A side view showing an example of using the dust control system according to the first embodiment of the present invention at a work site. Schematic diagram of the dust control system of FIG. 1 (front view (A) of fluid discharger, side view (B) of fluid discharger, schematic diagram (C) of pumping mechanism) Top view of the casing of the fluid discharger shown in FIG. 2 when viewed transparently. Bottom view when the casing of the fluid discharger shown in FIG. 2 is viewed transparently. Front view of the casing of the fluid discharger shown in FIG. 2 when viewed transparently. The figure which shows the fluid coupling structure of the fluid discharger of FIG. Figure (B)) FIG. 2 is a view showing a first flow path member of the fluid coupling structure of the fluid discharger of FIG. 2 (cross-sectional view (A), bottom view (B)). FIG. 2 is a view showing a second flow path member of the fluid coupling structure of the fluid discharger of FIG. 2 (cross-sectional view (A), bottom view (B)). A cross-sectional view showing the fluid coupling structure of the fluid discharger of FIG. 2 (FIG. (A), where the plug has just begun to be fitted into the socket and the second engaging portion has not yet been fitted into the first engaging portion. Figure (B) where the plug and socket are completely connected Partial configuration diagram of the fluid discharger of FIG. 2 (side view (A) showing the configuration around the discharge nozzle, side view (B) showing the configuration around the on-off valve). Partial configuration diagram of the fluid discharger of FIG. 2 (top view (A) showing the second rotation mechanism for rotating the casing, side view (B) showing the second rotation mechanism for rotating the casing, and the pulley of the second rotation mechanism. Side view (C) showing the relationship with the wire

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

First, a work site where the dust control system 120 according to the present embodiment is used will be described.

As shown in FIG. 1, a scaffold 106 is assembled around the work site 100, and a curing sheet 108 is attached to the outside of the scaffold 106. A building 104, which is a work object, is located at the work site 100 inside the scaffold 106. In the building 104, the work portion 102, which is the covered portion (surrounding portion) of the fluid BB sprayed from the fluid discharger 122 of the dust control system 120 described later, is dismantled by the work machine 110. The work machine 110 is, for example, freely movable in an infinite track. The work machine 110 is provided with a driver's cab 112. From the cab 112, the work attachment 116 provided at the tip of the arm body 114 and the endless track can be freely operated (in the cab 112, a worker or a remotely controlled robot operates the work machine 110. Manipulate). In this embodiment, the work attachment 116 is a crusher, and the work machine 110 is a so-called "crusher". The fluid discharger 122 can be remotely controlled by a transmitter (not shown) brought into the cab 112 (the transmitter may be operated outside the cab 112). The work portion 102 includes a portion where the work attachment 116 is in direct contact with the building 104, and refers to a portion where dust is directly generated by dismantling by the work attachment 116. The fluid BB may be water or may contain a fluid foam containing bubbles.

Next, a schematic configuration of the dust control system 120 according to the present invention will be described.

As shown in FIG. 1, the dust control system 120 includes one or more fluid dischargers 122 and a pumping mechanism 170. The fluid discharger 122 discharges the fluid BB capable of suppressing the generation of dust to the work portion 102 of the building 104 by remote control. For example, as shown in FIGS. 2A and 2B, the fluid discharger 122 rotates around a support member 126 arranged on a scaffold 106 or a building 104 and a rotation axis Rz supported by the support member 126. A possible rotating member 124 is provided (note that reference numeral 145 is a handle attached to the rotating member 124). The rotating member 124 has a substantially rectangular parallelepiped shape that is short in the Z direction and long in the X direction or the Y direction. Then, as shown in FIGS. 3, 4, and 5, the rotating member 124 is provided with a casing 142 (indicated by a broken line) outside the frame body 144 (indicated by a broken line) having a frame shape made of a plate-shaped metal material, and inside. The main body swivel joint structure 130, the on-off valve 134, the main body rotation drive body 151, the valve rotation drive body 159, and the control device 164 are housed in the main body swivel joint structure (that is, the casing 142 has a main body swivel joint structure). The body 130 and the main body rotation drive body 151 are housed). As shown in FIG. 3, the nozzle swivel joint structure 138 and the discharge nozzle 140 are arranged outside the casing 142 and are rotationally driven by the nozzle rotation drive body 147 supported by the rotating member 124 (that is, fluid discharge). The machine 122 includes a support member 126, a fluid coupling structure 129, a main body swivel joint structure 130, an on-off valve 134, a nozzle swivel joint structure 138, a discharge nozzle 140, a nozzle rotation drive body 147, and a main body. A rotary drive body 151, a valve rotary drive body 159, and a control device 164 are provided.

The flow path of the fluid BB in the fluid discharger 122 is composed of the flow path component 128 as shown in FIGS. 2A and 2B. As shown in FIGS. 2 (A), 2 (B), 3, 4, and 5, the flow path structure 128 includes a T-shaped pipe 128B, a fluid coupling structure 129, and a main body swivel joint structure 130. It includes an on-off valve 134, a nozzle swivel joint structure 138, and a discharge nozzle 140. Of these, the rotating member side and the supporting member side can be attached and detached (with one touch) at the fluid coupling structure 129, and the flow path component 128 can be separated into the rotating member side and the supporting member side. ..

As shown in FIG. 2C, the pumping mechanism 170 pumps a component of high-pressure water or foam to the fluid discharger 122. The pumping mechanism 170 includes a tank unit 170B for storing water or foam components, and a pump unit 170A for compressing water or foam components. The tank unit 170B and the pump unit 170A, and the pump unit 170A and the fluid discharger 122 are connected by flexible resin pipes T1 and T2, respectively.

The transmitter (not shown) that remotely controls the fluid discharger 122 has a portable shape, changes the direction of the discharge nozzle 140 that discharges the fluid BB in the vertical and horizontal directions, and discharges the fluid BB. Is designed to be controllable. Further, the transmitter can determine the discharge range of the fluid BB by the fluid discharger 122 and automatically set the fluid BB to be discharged in the range. In the present embodiment, a maximum of 16 fluid dischargers 122 can be remotely controlled by one transmitter.

Each component will be described in detail below.

As shown in FIG. 5, the support member 126 supports the second flow path member 129A of the fluid coupling structure 129 via the T-shaped pipe 128B, and is arranged below the second flow path member 129A along the rotation axis Rz. A support shaft 126A and four legs 126B deployably connected to the support shaft 126A are provided. The support shaft 126A is provided with a pair of mounting portions 126AA symmetrically four times at the lower end portion of a substantially cylindrical shape (that is, as shown in FIG. 4, a total of eight mounting portions 126AA are provided). The leg portion 126B is arranged between the paired mounting portions 126AA, and the bolt Bt is inserted into a hole (not shown) provided in the leg portion 126B. Therefore, the leg portion 126B is rotatable, and the other end portion of the leg portion 126B (here, the portion covered with the elastic member Es) can be brought close to and separated from each other. The support shaft 126A is, for example, formed of resin, and is provided with a screw hole for fixing the T-shaped pipe 128B arranged at the upper portion. The leg portion 126B is a hollow rectangular parallelepiped made of an aluminum alloy. It may be a member made of a resin such as, or an iron rod or the like may be used).

The T-shaped pipe 128B contains, for example, iron as a main component. As shown in FIG. 5, the fluid BB is blocked by a male screw plug on the side connected to the support shaft 126A, and the portion extending radially from the rotation shaft Rz is the fluid introduction port 128A (fluid introduction port 128A). The pipe T2 is connected to the port 128A).

As shown in FIG. 5, a fluid coupling structure 129 is connected above the T-shaped pipe 128B. The fluid coupling structure 129 is attached to the first flow path member 129B connected to the main body fixed side body 130A of the main body swivel joint structure 130 and the central axis of the main body fixed side body 130A (rotation axis Rz of the main body rotating side body 130B). It has a second flow path member 129A that is detachably fitted to the first flow path member 129B along the line. Here, FIG. 6A shows a state in which the first flow path member 129B and the second flow path member 129A are fitted, and FIG. 6B shows the first flow path member 129B and the second flow path member 129A. Shows a state in which the member 129A is separated from the member 129A.

First, the first flow path member 129B will be described with reference to FIGS. 7A and 7B. The first flow path member 129B includes a base portion 129BA, a plug 129BB, and a first engaging portion 129BE. The base portion 129BA is an outer peripheral portion of the first flow path member 129B, and is integrally provided around the plug 129BB. The plug 129BB is provided with a recess 129BD on the outer surface. The plug 129BB has an annular shape in the Z direction except for the portion integrated with the base portion 129BA.

As shown in FIGS. 7A and 7B, the first engaging portion 129BE is two cylindrical protruding portions integrally formed with the base portion 129BA (in other words, the first flow path member 129B). Includes a first engaging portion 129BE integrally provided on the outer peripheral portion). The two first engaging portions 129BE are provided at positions symmetrical with respect to the rotation axis Rz (phases differ from each other by 180 degrees with respect to the rotation axis Rz) and are provided along the rotation axis Rz direction. A recess 129BF is provided inside the first engaging portion 129BE. Here, the reference numeral Z1 is the amount of protrusion of the plug 129BB from the first engaging portion 129BE. That is, in the present embodiment, the plug 129BB is in a state of protruding from the first engaging portion 129BE. The broken line OL shown in FIGS. 6 (A), 6 (B), 7 (A), 9 (A), and (B) indicates a tangent line to the outer shape of the casing 142. That is, the tip portion 129BC of the first flow path member 129B is located inside the tangent OL of the outer shape of the casing 142.

Next, the second flow path member 129A will be described with reference to FIGS. 8A and 8B. The second flow path member 129A includes a base portion 129AA, a socket 129AB, and a second engaging portion 129AI. The base portion 129AA is an outer peripheral portion of the second flow path member 129A, and is integrally provided around the socket 129AB. As shown in FIGS. 8A, 8B, 9A, and 9B, the socket 129AB has an O-ring 129AD on the inner surface thereof, which can be sealed with the plug 129BB when the plug 129BB is inserted. Be prepared. Further, the socket 129AB further includes one or more (four in this case) ball 129AF, a support hole 129AE for movably holding one or more balls 129AF, and (for example, a white arrow in FIG. 8A). Displaceable along the outer surface (in the direction indicated), it comprises a ring portion 129AH that presses a plurality of balls 129AF with its inner surface 129AHI. Therefore, as shown in FIG. 9B, when the ring portion 129AH is raised, one or more balls 129AF are inserted into the recess 129BD of the plug 129BB on the inner side surface 129AHI of the ring portion 129AH (see FIG. 7A). The structure is such that the plug 129BB cannot be pulled out from the socket 129AB. On the contrary, as shown in FIG. 9A, when the ring portion 129AH is lowered, one or more balls 129AF are inserted into the recess 129BD of the plug 129BB on the inner side surface 129AHI of the ring portion 129AH (see FIG. 8A). The structure is such that the plug 129BB can be pulled out from the socket 129AB without being pressed against. That is, the distance between one or more balls 129AF changes due to the displacement of the ring portion 129AH, and the detached state between the first flow path member 129B and the second flow path member 129A is controlled.

As shown in FIGS. 8A and 8B, the socket 129AB has an annular cross-sectional shape in the Z direction other than the portion integrated with the base portion 129AA and the portion having the ball 129AF. Here, reference numeral 129AC is a stop portion for stopping the tip portion 129BC of the plug 129BB. The reference numeral 129AG is located between the socket 129AB and the ring portion 129AH, and indicates a coil spring that constantly presses the ring portion 129AH on the upper side of the rotation axis Rz (the coil spring 129AG constantly raises the ring portion 129AH). It is in the state of being done).

As shown in FIGS. 8A and 8B, the second engaging portion 129AI is two protruding portions fixed to the base portion 129AA (in other words, the second flow path member 129A is integrated with the outer peripheral portion). A second engaging portion 129AI is provided). As shown in FIG. 8B, the two second engaging portions 129AI are positioned symmetrically with respect to the rotation axis Rz (phases differ from each other by 180 degrees with respect to the rotation axis Rz), and are in the rotation axis Rz direction. It is provided along with. The position of the second engaging portion 129AI corresponds to the recess 129BF of the first engaging portion 129BE. As shown in FIG. 9B, the second engaging portion 129AI can be fitted inside the recess 129BF of the first engaging portion 129BE. The second engaging portion 129AI is, for example, a screw portion of a bolt and is fixed to the base portion 129AA with a nut Nt (the second engaging portion does not necessarily have to be a bolt and is in the shape of a round bar. good). The reference numeral Z2 shown in FIG. 8A is the amount of protrusion of the socket 129AB from the second engaging portion 129AI. That is, in the present embodiment, the socket 129AB is in a state of protruding from the second engaging portion 129AI.

Therefore, first, when connecting the first flow path member 129B and the second flow path member 129A, as shown in FIG. 9A, the ring portion 129AH of the socket 129AB is pushed downward by a finger or the like, and the first is The 1 flow path member 129B and the 2nd flow path member 129A are brought closer to each other. Then, since the plug 129BB protrudes from the first engaging portion 129BE and the socket 129AB protrudes from the second engaging portion 129AI, as shown in FIG. 9A, the first engaging portion 129BE The plug 129BB is fitted into the socket 129AB before the second engaging portion 129AI is fitted into the socket 129AI. Then, when the plug 129BB is fitted into the socket 129AB until the ball 129AF is fitted into the recess 129BD (see FIG. 7A) of the plug 129BB, the first engaging portion is as shown in FIG. 9B. The second engaging portion 129AI is loosely fitted in the recess 129BF of the 129BE. Here, the plug 129BB has a rotationally symmetric shape at a portion fitted into the socket 129AB. Therefore, the plug 129BB tries to rotate freely with respect to the socket 129AB. However, in that case, the second engaging portion 129AI comes into contact with the recess 129BF of the first engaging portion 129BE, so that the rotation of the plug 129BB with respect to the socket 129AB is prevented. That is, when the first flow path member 129B and the second flow path member 129A are fitted, the contact between the first engagement portion 129BE and the second engagement portion 129AI causes the first flow path member 129B to come into contact with the first flow path member 129B. The structure is such that the relative rotation of the second flow path member 129A is locked.

If the recess 129BF of the first engaging portion 129BE is widened at the tip of the first engaging portion 129BE and narrows toward the back, the second engaging portion is connected to the first engaging portion 129BE. It is easy to fit the 129AI, and when the fluid coupling structure 129 is coupled, the rotation backlash between the first flow path member 129B and the second flow path member 129A is reduced. That is, in this case, the fluid coupling structure 129 can be attached and detached more smoothly, and the rotation control of the rotating member 124 with respect to the support member 126 can be performed more accurately (note that the second engaging portion 129AI can be performed more accurately. If the tip is thin and the root is thick, this effect can be more pronounced).

As shown in FIG. 3, the main body swivel joint structure 130 has a main body fixed side body 130A fixed to the first flow path member 129B and a central axis (rotation axis Rz) of the main body fixed side body 130A fixed to the casing 142. It is provided with a main body rotating side body 130B that can rotate around (that is, among the flow path constituents 128, the T-shaped pipe 128B, the fluid coupling structure 129, and the main body fixing side body 130A are supported by the support member 126. The main body rotating side body 130B, the on-off valve 134, the nozzle swivel joint structure 138 and the discharge nozzle 140 are supported and fixed to the rotating member 124. Further, the main body rotating side body 130B and the casing 142 rotate integrally. It will be). The main body rotation side body 130B communicates with the discharge nozzle 140 via the on-off valve 134 and rotates integrally with the discharge nozzle 140. The main body fixed side body 130A rotatably supports the main body rotating side body 130B.

The on-off valve 134 shown in FIGS. 3 and 4 is, for example, a ball valve, which communicates with the discharge nozzle 140 via the nozzle swivel joint structure 138 and is rotated by the rotation of the on-off shaft 134A (centered on the rotation shaft Rb). The flow rate of the fluid BB from the main body rotation side body 130B is limited.

As shown in FIGS. 3 and 4, the nozzle swivel joint structure 138 rotatably supports and supports the nozzle rotation side body 138B and the nozzle rotation side body 138B that communicate with and support the discharge nozzle 140 via the on-off valve 134. It has a nozzle fixing side body 138A that communicates with the main body rotation side body 130B. The discharge nozzle 140 is attached to the nozzle rotation side body 138B and discharges the fluid BB. The rotation axis Rn of the nozzle rotation side body 138B and the rotation axis Rz of the main body rotation side body 130B are configured to be orthogonal to each other.

As shown in FIG. 3, the nozzle rotation drive body 147 includes a first electric linear motion mechanism 148 and a first rotation mechanism 149, and electrically drives the nozzle rotation side body 138B relative to the nozzle fixing side body 138A. It is driven by rotation. As shown in FIG. 3, the first electric linear motion mechanism 148 includes a mounting portion 148A, a motor portion 148B, a connecting portion 148C, a cylinder portion 148D, and a movable portion 148E. The mounting portion 148A has a through hole (not shown) and is provided at the end of the connecting portion 148C. As a result, the first electric linear motion mechanism 148 is pivotally supported by the support rod 146A having one end attached to the frame body 144. Reference numeral 144A is a stop portion for supporting the other end of the support rod 146A.

The motor unit 148B is, for example, an electric motor. Then, for example, an encoder is housed in the connection portion 148C. A ball screw is housed in the cylinder portion 148D, the rotation of the electric motor is read by the encoder, and the rotation is converted into the rotation of the ball screw. The movable portion 148E can be linearly moved in the On direction of the moving axis by the rotation of the ball screw.

As shown in FIG. 10A, the first rotation mechanism 149 includes a connecting portion 149A, a rod portion 149B, a pin holding portion 149C, a lever portion 149D, and a pin 149E. The connecting portion 149A is fixed to the tip of the movable portion 148E and moves integrally with the movable portion 148E. The rod portion 149B is a rod-shaped member supported by the connecting portion 149A and moves integrally with the connecting portion 149A. The pin holding portion 149C is a member for integrally moving the pin 149E with the rod portion 149B. The lever portion 149D is a plate-shaped member provided on the nozzle rotation side body 138B of the nozzle swivel joint structure 138, and is connected to the pin holding portion 149C by a pin 149E.

As shown in FIG. 3, the main body rotation drive body 151 includes a second electric linear motion mechanism 152 and a second rotation mechanism 153, and the main body rotation side body 130B is electrically operated relative to the main body fixed side body 130A. It is driven by rotation. The second electric linear motion mechanism 152 has almost the same configuration as the first electric linear motion mechanism 148, and as shown in FIG. 11A, the mounting portion 152A, the motor portion 152B, the connection portion 152C, and the cylinder portion. It includes a 152D and a movable portion 152E. Therefore, the description of the second electric linear motion mechanism 152 will be omitted. The second electric linear motion mechanism 152 is pivotally supported by the support rod 146C having one end attached to the frame body 144 by the attachment portion 152A.

As shown in FIGS. 11A and 11B, the second rotation mechanism 153 includes a connecting portion 153A, a pin 153B, a guide rail 153C, a stop portion 153D, 153H, a hook 153E, a wire 153F, and a pulley. It is equipped with 153G. The connecting portion 153A is fixed to the tip of the movable portion 152E and moves integrally with the movable portion 152E. The pin 153B rotatably attaches one end of the guide rail 153C to the connecting portion 153A and holds the wire 153F. As shown in FIG. 5, the guide rail 153C is a member having a U-shaped cross section, and is arranged on the connecting portion 153A so as to sandwich a part of the outer periphery of the pulley 153G. The stop portion 153D is a member for locking the hook 153E that pulls the wire 153F locked to the pin 153B. One end of the hook 153E is U-shaped so that the wire 153F can be suspended, and the other end is a screw into which the nut Nt can be screwed. Therefore, the moving axis Or of the movable portion 152E is substantially parallel to the direction of the straight line connecting the hook 153E and the pin 153B. Then, by screwing the nut Nt from the outside of the stop portion 153D to the screw portion of the hook 153E, the tension of the wire 153F arranged between the pin 153B and the hook 153E can be freely adjusted via the pulley 153G. can do. That is, the wire 153F is held on the guide rail 153C with a predetermined tension along the moving axis Or of the movable portion 152E. Here, the predetermined tension means a tension that allows the pulley 153G to rotate relative to each other (rotate the casing 142 with respect to the support member 126) in a state where the wire 153F does not have slack. The wire 153F is made of metal (may be made of resin, or may be a chain or a belt).

Here, as shown in FIG. 11A, the pulley 153G is fixed to the main body fixing side body 130A of the main body swivel joint structure 130. The pulley 153G has a disk shape and is provided with two groove portions Tr1 and Tr2 on the entire outer periphery (FIGS. 11B and 11C; however, the groove portions Tr1 and Tr2 are provided at one place where the stop portion 153H is provided. It is one). By engaging and disengaging the wires 153F in each of the two groove portions Tr1 and Tr2, the wires 153F are prevented from being caught by each other, and the relative rotation of the pulley 153G is smoothly realized. The wires 153F are arranged around the entire circumference of the grooves Tr1 and Tr2, and intersect with each other. As shown in FIG. 11A, the wire 153F held by the guide rail 153C with respect to the pulley 153G is tangent to the pulley 153G. Therefore, the required length of the wire 153F can be minimized, and careless slackening of the wire 153F can be prevented.

As shown in FIG. 3, the valve rotation drive body 159 includes a third electric linear motion mechanism 160 and a third rotation mechanism 162, and electrically drives the on-off valve 134. The third electric linear motion mechanism 160 has almost the same configuration as the first electric linear motion mechanism 148, and as shown in FIG. 3, the mounting portion 160A, the motor portion 160B, the connection portion 160C, the cylinder portion 160D, and the like. It is equipped with a movable portion 160E. Therefore, the description of the third electric linear motion mechanism 160 will also be omitted. The third electric linear motion mechanism 160 is pivotally supported by the support rod 146B having one end attached to the frame body 144 by the attachment portion 160A. Reference numeral 144B is a stop portion for supporting the other end of the support rod 146B.

As shown in FIG. 10B, the third rotation mechanism 162 converts the linear movement of the movable portion 160E into a rotary motion, and opens and closes the on-off valve 134 that limits the amount of fluid BB discharged from the discharge nozzle 140. Specifically, the third rotation mechanism 162 has a configuration in which the lever portion 162C provided on the on-off shaft 134A of the on-off valve 134 and the connecting portion 162A fixed to the movable portion 160E are connected by a pin 162B. .. Therefore, when the movable portion 160E moves, the moving shaft Ob swings and rotates slightly around the support rod 146B.

The control device 164 shown in FIGS. 3 and 4 includes a radio unit, a processing unit, a drive unit, and a power supply unit. The radio unit receives a signal from a transmitter (not shown). The processing unit controls the wireless unit, decodes the signal received by the wireless unit, and outputs the control signal to the drive unit. The drive unit drives and controls the first, second, and third electric linear motion mechanisms 148, 152, and 160 with the drive signal corresponding to the control signal. The power supply unit is, for example, a rechargeable battery (may be a power adapter that converts an external power source into a DC power source), and supplies all the electric power used in the fluid discharger 122. Reference numeral 164A shown in FIG. 2A is an operation panel. The operation panel 164A makes it possible to turn the power on and off, select the radio frequency used by each fluid discharger 122, manually set the fluid discharge range, and switch between automatic and manual fluid discharge.

As described above, in the present embodiment, the second rotation mechanism 153 converts the linear movement of the movable portion 152E into a rotational movement, and rotationally displaces the main body rotation side body 130B. That is, since the pressure fluctuation of the fluid BB is applied in the rotation axis Rz direction of the main body rotation side body 130B, the influence of the pressure fluctuation is not so much around the rotation axis Rz of the main body swivel joint structure 130. Therefore, the load on the second electric linear motion mechanism 152 of the main body rotation drive body 151 has little fluctuation even if the pressure of the fluid BB fluctuates, and the margin of the electric power supplied to the main body rotation drive body 151 and the main body rotation drive It is possible to minimize the output scale of the body 151. At the same time, since it is the second electric linear motion mechanism 152 of the main body rotation drive body 151 that rotates the rotary member 124, it is not necessary to separately provide a limit switch for limiting the direction of the rotary member 124 as in the rotary device. It is possible to reduce the cost. Not limited to this, it is not the combination of the second electric linear motion mechanism 152 and the second rotation mechanism 153 that rotates the rotating member, but the rotating member may be directly rotated by the rotating device.

Further, in the present embodiment, the second rotation mechanism 153 includes a guide rail 153C supported by the main body rotation side body 130B, a wire 153F attached to the guide rail 153C, and a pulley 153G fixed to the main body fixed side body 130A. , Equipped with. Then, the second electric linear motion mechanism 152 is configured to relatively rotate the pulley 153G fixed to the main body fixed side body 130A by moving the wire 153F. Therefore, by increasing the moving distance of the wire 153F and increasing the number of turns of the wire 153F around the pulley 153G, the relative rotation range of the pulley 153G, that is, the rotation angle of the rotating member 124 with respect to the support member 126 is easily widened. be able to. At the same time, since the pulley 153G is relatively rotated by the linear movement of the wire 153F to rotate the rotating member 124, the labor of axis alignment required when directly rotating the rotating member 124 with the rotating device is not required, and the assembly can be performed. The man-hours required can be significantly reduced, and cost reduction can be promoted. However, in this case, the tension of the wire 153F applied to the pulley 153G when the wire 153F is moved pulls the pulley 153G, and a force that tends to incline the rotation axis Rz in a direction corresponding to the rotation angle is applied. work. However, in the present embodiment, the guide rail 153C has a U-shaped cross section and has a structure that sandwiches the pulley 153G. As a result, the tilt of the pulley 153G and the tilt of the rotary shaft Rz can be prevented, so that the second electric linear motion mechanism 152 may be displaced vertically and horizontally due to the tilt of the rotary shaft Rz. (Displacement) can be prevented, and stable and smooth rotation of the pulley 153G can be realized. Further, since the radius of the pulley 153G is constant, the torque for rotating the pulley 153G can be constant. Not limited to this, the second rotation mechanism may be composed of a combination of a plurality of gears without providing the wire and the pulley. Further, in the present embodiment, the wires 153F are arranged around the entire circumference of the groove portions Tr1 and Tr2 and intersect with each other. That is, the wire 153F is wound around the entire circumference of the pulley 153G, and the wire 153F is further fixed to the pulley 153G by the stop portion 153H. Therefore, the pulley 153G can be relatively rotated more reliably by moving the wire 153F. Not limited to this, the wire may be engaged only in a part of the groove portions Tr1 and Tr2, or the wire may not be fixed to the pulley at the stop portion.

Further, in the present embodiment, the second electric linear motion mechanism 152 is rotatably supported by the support rod 146C, and the guide rail 153C that supports the wire 153F engaged with the pulley 153G is movable of the second electric linear motion mechanism 152. It is rotatably supported by the connecting portion 153A connected to the portion 152E. Therefore, since the directions of the moving shaft Or and the wire 153F do not necessarily have to be parallel, the positioning of the second electric linear motion mechanism 152 with respect to the pulley 153G does not have to be strict. That is, the man-hours for positioning the second electric linear motion mechanism 152 at the time of assembly can be reduced, and the cost of the fluid discharger 122 can be further reduced. Not limited to this, the second electric linear motion mechanism and the guide rail may be arranged so as not to rotate.

Even in the conventional fluid coupling structure, it is common to use a plug and a socket as shown in this embodiment. That is, if the conventional fluid coupling structure is used as it is, joining and separation can be realized with one touch, but it can rotate freely at the joining portion. That is, when it is necessary to limit the free rotation after joining as in the present embodiment, the conventional fluid coupling structure has an inconvenient configuration.

However, in the present embodiment, the fluid coupling structure 129 includes a first flow path member 129B connected to the main body fixed side body 130A and a second flow path member 129A detachably fitted to the first flow path member 129B. , Equipped with. That is, by adopting the fluid coupling structure 129, the fluid discharger 122 can also divide the flow path (flow path component 128) through which the fluid BB flows, and can be divided and stored or transported. .. When the first flow path member 129B and the second flow path member 129A are fitted, the first engagement portion 129BE and the second flow path member integrally provided on the outer periphery of the first flow path member 129B are formed. The contact with the second engaging portion 129AI integrally provided on the outer periphery of the 129A locks the relative rotation of the second flow path member 129A with respect to the first flow path member 129B. That is, even if the fluid coupling structure 129 is adopted, it is possible to prevent the fluid coupling structure 129 from unexpectedly rotating in this portion, so that the rotation of the discharge nozzle 140 by the main body rotation drive body 151 around the rotation axis Rz is stably realized. be able to.

Further, in the present embodiment, two first engaging portions 129BE and two second engaging portions 129AI are provided at positions symmetrical with respect to the rotation axis Rz. Therefore, it is extremely easy to move the ring portion 129AH that comes inside the first engaging portion 129BE and the second engaging portion 129AI with a finger. That is, the fluid coupling structure 129 can be attached and detached extremely easily. Further, the first engaging portion 129BE and the second engaging portion 129AI have 180-degree phases different from each other with respect to the rotation axis Rz, and the first flow path member 129B and the second flow path member 129A have a symmetrical shape. Therefore, it is easy to manufacture, and the support member 126 can be attached to the rotating member 124 in two patterns. That is, the installation state of the leg portion 126B can be selected from two patterns, and the fluid discharger 122 can be installed more stably. Not limited to this, the first engaging portion and the second engaging portion may be 1 or more, respectively. For example, if the first engaging portion and the second engaging portion are each provided at positions symmetrical to the rotation axis Rz three times, the positions of the legs with respect to the rotating member can be set from three patterns. Since it can be selected, the fluid discharger can be installed more stably.

Further, in the present embodiment, the main body swivel joint structure 130 and the main body rotation drive body 151 are housed, and a casing 142 that rotates integrally with the main body rotation side body 130B is provided, and the tip of the first flow path member 129B is provided. The portion 129BC is located inside the tangent OL of the outer shape of the casing 142. That is, when the fluid coupling structure 129 is separated into the support member side and the rotating member side, it is possible to prevent the first flow path member 129B from protruding from the casing 142. Therefore, when the fluid coupling structure 129 is separated and moved, the tip portion 129BC of the first flow path member 129B does not protrude from the casing 142, and it is possible to prevent the portability from being impaired. At the same time, since collisions and the like are less likely to occur, scratches and deformations are less likely to occur on the tip portion 129BC, so that it is possible to prevent poor attachment / detachment from the second flow path member 129A and fluid leakage. Not limited to this, the tip end portion of the first flow path member may be located outside the tangent line of the outer shape of the casing.

Further, in the present embodiment, the first flow path member 129B includes a plug 129BB, the second flow path member 129A includes a socket 129AB, and the socket 129AB further includes four balls 129AF, a support hole 129AE, and a ring portion. With 129AH, the distance between the four balls 129AF changes due to the displacement of the ring portion 129AH, and the detached state of the first flow path member 129B and the second flow path member 129A is controlled. That is, the plug 129BB is attached to the rotating member side, and the ring portion 129AH that controls the detachable state of the first flow path member 129B and the second flow path member 129A is attached to the support member side. It is a socket 129AB provided. Here, the plug 129BB is shorter than the socket 129AB, has a simple structure, and is light. Therefore, when the support member side is separated, the weight of the rotating member side can be reduced, and the rotating member side can be made more portable. Further, the socket 129AB has an O-ring 129AD for maintaining the hermeticity with the plug 129BB, and is more likely to have a problem than the plug 129BB in maintaining the hermeticity. Therefore, when a problem occurs in the socket 129AB, it is easier to replace the socket 129AB than in the case where the socket 129AB is on the rotating member side. Further, the movement operation of the ring portion 129AH is performed by inserting the socket 129AB into the rotating member 124 and moving the ring portion 129AH downward at that time, rather than having the socket 129AB inside the rotating member 124. It is easy, and the operability when attaching and detaching the fluid coupling structure 129 can be improved.

Not limited to this, the first flow path member may be provided with a socket, and the second flow path member may be provided with a plug. Even in that case, since the fluid coupling structure can be attached and detached only by moving the ring portion up and down, it is possible to separate the rotating member side and the supporting member side with one touch. Of course, the socket may not be provided with a ring portion for controlling the detachable state between the first flow path member and the second flow path member. For example, in the configuration for controlling the detachable state between the first flow path member and the second flow path member, a leaf spring and a protrusion provided on the leaf spring may be used instead of the ring portion and the ball. Alternatively, instead of the socket, a configuration may be provided between the first engaging portion and the second engaging portion to control the detached state between the first flow path member and the second flow path member. The number of balls is not limited to four, and may be one or more.

Further, in the present embodiment, the plug 129BB protrudes from the first engaging portion 129BE, and the socket 129AB protrudes from the second engaging portion 129AI. That is, the total of the protrusion amount Z1 from the first engaging portion 129BE of the plug 129BB and the protrusion amount Z2 from the second engaging portion 129AI of the socket 129AB is larger than zero. Therefore, after the plug 129BB is always fitted in the socket 129AB, the second engaging portion 129AI is fitted in the first engaging portion 129BE. That is, by first fitting the plug 129BB into the socket 129AB, the second engaging portion 129AI is roughly positioned for fitting the second engaging portion 129AI into the first engaging portion 129BE, which is smaller than the plug 129BB and the socket 129AB. Therefore, it becomes easy to fit the second engaging portion 129AI into the first engaging portion 129BE, and the first flow path member 129B and the second flow path member 129A can be easily connected. In the present embodiment, both the protrusions Z1 and Z2 are zero or more, but if the total of the protrusions Z1 and Z2 is larger than zero, the same effect can be obtained. Not limited to this, the total of the protrusion amounts Z1 and Z2 may be zero or less.

Even when using a socket and a plug, even if the recess provided on the outer surface of the socket is provided only at the position corresponding to the position of the ball in the circumferential direction of the socket. good. In that case, the boundary portion between the outer surface portion and the recessed portion of the socket not provided with the recess corresponds to the first engaging portion, and the ball corresponds to the second engaging portion. The form of the first engaging portion 129BE and the second engaging portion 129AI may be unnecessary.

Further, in the present embodiment, the fluid discharger 122 includes a support member 126 that supports the second flow path member 129A, and the support member 126 includes a support shaft 126A and four legs 126B. Therefore, the rotating member 124 can be stably supported without being fixed on the ground, the scaffold 106, and the building 104. Further, since the four legs 126B can be deployed, the support member 126 has a compact form in which the legs 126B are not deployed, thereby improving the storability and portability (portability). be able to. And since the number of legs 126B is not too large, the assembleability is also good. The number of legs is not limited to this, and the number of legs may be three or more. If more legs are used to stably receive the rotational reaction force of the rotating member and the reaction force at the time of water discharge, the legs will be circular when the tips of the legs are tied together when the legs are unfolded. Because it will be closer. Further, the legs may be in a fixedly deployed state or have a structure that can be easily attached and detached. In the first place, the fluid discharger 122 may be configured as a support member by combining various iron pipes constituting the scaffolding at the work site without being provided with the support member, or may be directly fixed to an existing scaffolding or the like. You may.

Further, in the present embodiment, the nozzle swivel joint structure 138 having the nozzle rotation side body 138B and the nozzle fixing side body 138A, and the nozzle rotation drive body 147 are provided, and the rotation shaft Rn of the nozzle rotation side body 138B is provided. And the rotation axis Rz of the main body rotation side body 130B are orthogonal to each other. Therefore, the discharge nozzle 140 can be rotationally moved around two orthogonal axes, and the discharge nozzle 140 can be directed in any direction. Further, since the pressure fluctuation of the fluid BB is in a state of being applied in the rotation axis Rn direction of the nozzle rotation side body 138B, the influence of the pressure fluctuation is not so much around the rotation axis Rn of the nozzle swivel joint structure 138. Therefore, the load on the first electric linear motion mechanism 148 of the nozzle rotation drive body 147 has little fluctuation even if the pressure of the fluid BB fluctuates, and the margin of the power supplied to the nozzle rotation drive body 147 and the nozzle rotation drive It is possible to minimize the output scale of the body 147. At the same time, since it is the first electric linear motion mechanism 148 and the first rotation mechanism 149 that rotate the discharge nozzle 140, it is not necessary to separately provide a limit switch for limiting the direction of the discharge nozzle 140 like a rotating device. It is possible to reduce the cost. Not limited to this, the body on the nozzle rotation side may be rotated directly by a rotating device instead of the combination of the first electric linear motion mechanism 148 and the first rotating mechanism 149. Further, the nozzle rotation drive body may be manual instead of electric. In the first place, there is no nozzle swivel joint structure, and the discharge nozzle may only rotate around the rotation axis Rz.

Further, in the present embodiment, the first rotation mechanism 149 includes a connecting portion 149A, a rod portion 149B, a pin holding portion 149C, a lever portion 149D, and a pin 149E. Then, the first electric linear motion mechanism 148 rotates the lever portion 149D by linearly moving the pin holding portion 149C integrated with the connecting portion 149A. As a result, the discharge nozzle 140 fixed to the nozzle rotation side body 138B is rotated. Therefore, the labor of axis alignment required when the discharge nozzle 140 is directly rotated by the rotating device is not required, the man-hours required for assembly can be significantly reduced, and the cost reduction can be promoted. Not limited to this, the first rotation mechanism may be configured by a combination of a plurality of gears.

Further, in the present embodiment, an on-off valve 134 and a valve rotation drive body 159 are provided. Therefore, even if the pumping mechanism 170 is commonly connected to the plurality of fluid dischargers 122, the fluid discharge amount can be electrically controlled for each fluid discharger 122. Not limited to this, the on-off valve may be opened and closed manually without the valve rotation driving body. In the first place, the fluid discharger does not have to be equipped with an on-off valve.

Further, in the present embodiment, the valve rotation drive body 159 includes a third electric linear motion mechanism 160 and a third rotation mechanism 162, and the on-off valve 134 has a lever portion that rotates in response to the movement of the movable portion 160E. 162C is provided on the opening / closing shaft 134A. Therefore, the third rotation mechanism 162 can have a simple configuration, and can be miniaturized and cost-reduced. At the same time, there is no need for the labor of axis alignment required when rotating the opening / closing shaft 134A with the rotating device, the man-hours required for assembly can be significantly reduced, and cost reduction can be promoted. Not limited to this, it is not the combination of the third electric linear motion mechanism 160 and the third rotation mechanism 162 that rotates the opening / closing shaft, but the opening / closing shaft may be directly rotated by the rotating device. Further, the third rotation mechanism may be composed of a combination of a plurality of gears.

Further, in the present embodiment, the mounting portions 148A, 152A, and 160A are arranged only on one end side of the frame body 144 (in the −Y direction in FIG. 3), and the first electric linear motion mechanism 148 and the second electric linear motion mechanism 152 are arranged. And the third electric linear motion mechanism 160 faces substantially the same direction in the casing 142. Therefore, the moisture-proof and dust-proof measures that cause performance deterioration of the first electric linear motion mechanism 148, the second electric linear motion mechanism 152, and the third electric linear motion mechanism 160 are provided on the other end side of the frame body 144 (FIG. 3). Then, it is only necessary to be careful of intrusion from the + Y direction), so it is easy to take moisture-proof and dust-proof measures all at once. Not limited to this, any one of the first electric linear motion mechanism, the second electric linear motion mechanism, and the third electric linear motion mechanism may be arranged in different directions in the casing.

Further, in the present embodiment, the fluid BB contains water or a foamy substance. Therefore, when the fluid BB is water, the scattering of dust can be effectively reduced, the range in which the fluid BB can be discharged can be widened, and the configuration of the fluid discharger 122 is a foamy substance. It can be simplified in comparison. Further, when the fluid BB is a foamy substance, the scattering of dust can be effectively reduced, the amount of water used can be significantly reduced, and not only dust but also odor can be effectively prevented. Is possible. In addition, when the fluid BB is a foam-like material, the pressure feeding mechanism 170 may simply send water, and the stock solution of the foam-like material may be arranged in the vicinity of the fluid discharger 122.

Further, in the present embodiment, remote control is performed from one transmitter to a plurality of fluid dischargers 122. Therefore, the number of operators of the fluid discharger 122 can be minimized, and the plurality of fluid dischargers 122 can be used efficiently. Not limited to this, one transmitter may operate one fluid discharger.

Therefore, according to the present embodiment, the fluid discharger 122 can have high portability while achieving a corresponding small size and light weight while being able to reduce power consumption.

Although the present invention has been described with reference to the first embodiment, the present invention is not limited to the first embodiment. That is, it goes without saying that improvements and design changes can be made without departing from the gist of the present invention.

In FIG. 1 of the above embodiment, the fluid discharger 122 is arranged on the scaffold 106 and the pumping mechanism 170 is arranged on the ground, but the present invention is not limited thereto. For example, the fluid discharger may be simply placed on a work object (including the ground), or the pumping mechanism may be placed next to each other at the same position as the fluid discharger.

Further, in the above embodiment, the so-called "crusher" is described as an example of the working machine 110, but the application of the present invention is not limited to this. For example, the same effect can be obtained by applying it to pile drivers, pile pullers, bulldozers, tractor excavators, power shovels, backhoes, drag lines, clam shells, crawler drills, earth drills, cranes, road cutters, breakers, etc. Can be done. In short, it can be widely applied to work machines that perform work that may generate dust in civil engineering work, construction work, and demolition work.

The present invention can be used at work sites where dust is generated such as civil engineering work, construction work, and demolition work, but is particularly suitable for demolition work, repair work, and the like of solid structures.

100 ... Work site 102 ... Work location 104 ... Building (work object)
106 ... Scaffold 108 ... Curing sheet 110 ... Work machine 112 ... Driver's cab 114 ... Arm body 116 ... Work attachment 120 ... Dust control system 122 ... Fluid release machine 124 ... Rotating member 126 ... Support member 126A ... Support shaft 126AA, 148A, 152A , 160A ... Mounting part 126B ... Leg part 128 ... Flow path configuration 128A ... Fluid inlet 128B ... T-shaped piping 129 ... Fluid coupling structure 129A ... Second flow path member 129AA ... 129BA ... Base part 129AB ... Socket 129AC, 144A , 144B, 153D, 153H ... Stopping part 129AD ... O-ring 129AE ... Support hole 129AF ... Ball 129AG ... Coil spring 129AH ... Ring part 129AH1 ... Inner surface 129AI ... Second engaging part 129B ... First flow path member 129BB ... Plug 129BC … Tip 129BD 129BF… Recess 129BE… First engaging part 130… Main body swivel joint structure 130A… Main body fixed side body 130B… Main body rotating side body 134… Open / close valve 134A… Open / close shaft 138… Nozzle swivel joint structure 138A ... Nozzle fixed side body 138B ... Nozzle rotation side body 140 ... Discharge nozzle 142 ... Casing 144 ... Frame body 145 ... Handle 146A, 146B, 146C ... Support rod 147 ... Nozzle rotation drive body 148 ... First electric linear motion mechanism 148B, 152B , 160B ... Motor unit 148C, 152C, 160C ... Connection unit 148D, 152D, 160D ... Cylinder unit 148E, 152E, 160E ... Movable unit 149 ... First rotation mechanism 149A, 153A, 162A ... Connection unit 149B ... Rod unit 149C ... Pin Holding part 149D, 162C ... Lever part 149E, 153B, 162B ... Pin 151 ... Main body rotation drive 152 ... Second electric linear motion mechanism 153 ... Second rotation mechanism 153C ... Guide rail 153E ... Hook 153F ... Wire 153G ... Pulley 159 ... Valve rotation drive body 160 ... 3rd electric linear motion mechanism 162 ... 3rd rotation mechanism 164 ... Control device 164A ... Operation panel 170 ... Pumping mechanism 170A ... Pump part 170B ... Tank part BB ... Fluid Bt ... Bolt Es ... Elastic member Nt ... Nuts Ob, On, Or ... Moving axis OL ... tangent line Rb, Rn, Rz ... Rotating axis T1, T2 ... Piping Tr1, Tr2 ... Groove Z1, Z2 ... Protruding amount

Claims (7)

In a fluid discharger that discharges a fluid that can suppress the generation of dust to the work area of the work object.
The fluid discharger has a discharge nozzle that discharges the fluid, a main body rotating side body that communicates with the discharge nozzle and rotates integrally with the discharge nozzle, and a main body fixed side body that rotatably supports the main body rotating side body. A main body swivel joint structure comprising the above, a main body rotation drive body that electrically drives the main body rotation side body relative to the main body fixed side body, and a first flow path connecting the main body fixed side body. A fluid coupling structure having a member and a second flow path member detachably fitted to the first flow path member along the rotation axis of the main body rotation side body.
The first flow path member includes a first engaging portion integrally provided on the outer peripheral portion, and the second flow path member is integrally provided on the outer peripheral portion and can come into contact with the first engaging portion. Equipped with a second engaging part,
When the first flow path member and the second flow path member are fitted to each other, the contact between the first engagement portion and the second engagement portion causes the first flow path member to be in contact with the first flow path member. A fluid discharger characterized in that the relative rotation of two flow path members is locked. In claim 1,
A casing that houses the main body swivel joint structure and the main body rotation drive body and rotates integrally with the main body rotation side body is provided.
A fluid discharger characterized in that the tip end portion of the first flow path member is located inside the tangent line of the outer shape of the casing. In claim 1 or 2,
The first flow path member includes a plug having a recess on the outer surface.
The second flow path member includes a socket having an O-ring on the inner surface capable of sealing with the plug when the plug is inserted.
The socket is further displaceably arranged along the outer surface with one or more balls displaceable in the recess, a support hole for movably holding the one or more balls, and said on its inner surface. With a ring portion that presses one or more balls,
A fluid discharger characterized in that the distance between the one or more balls is changed by the displacement of the ring portion, and the desorption state between the first flow path member and the second flow path member is controlled. In claim 3,
A fluid discharger characterized in that the sum of the amount of protrusion of the plug from the first engaging portion and the amount of protrusion of the socket from the second engaging portion is larger than zero. In any one of claims 1 to 4, further
A support member for supporting the second flow path member is provided.
The support member is characterized by comprising a support shaft arranged below the second flow path member along the rotation axis, and three or more legs deployably connected to the support shaft. Fluid discharger. In any one of claims 1 to 5, further
A nozzle swivel joint structure having a nozzle rotation-side body that communicates with and supports the discharge nozzle, and a nozzle-fixing-side body that rotatably supports and supports the nozzle rotation-side body and communicates with the main body rotation-side body. A nozzle rotation drive body that electrically drives the nozzle rotation side body relative to the nozzle fixing side body is provided.
A fluid discharger characterized in that the rotation axis of the nozzle rotation side body and the rotation axis of the main body rotation side body are orthogonal to each other. In any one of claims 1 to 6, further
A fluid discharger including an on-off valve that communicates with the discharge nozzle and limits the flow rate of the fluid from the body on the rotating side of the main body, and a valve rotation drive body that electrically drives the on-off valve.

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