JPH0574668U - Rocking nozzle device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an oscillating nozzle device having a refracting strut, in which each nozzle oscillates reliably and interlockingly with a simple structure. [Structure] An upper rotary shaft 23 and a lower rotary shaft 9 are provided along an upper strut 6 and a lower strut 7 which are connected in a bendable manner, and an appropriate number of nozzle attachment members are provided on each of the rotary shafts 23, 9. 24, 1
0 are mounted in a multi-stage manner so that both ends thereof can swing up and down, and the nozzle attachment members of the respective rotating shafts are connected to each other so that both ends thereof swing together vertically.
15a and 15b, the adjacent nozzle attachment members of the rotary shafts 23 and 9 are connected to each other by flexible interlocking members 26a and 26b at both ends thereof, and the columns 6 and 7 are connected to each other. Swing levers 19 for turning the turning shafts 23, 9 in reverse with the vertical swing of both ends of the nozzle mounting members 24, 10 are mounted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an oscillating nozzle device attached to a liquid spraying vehicle for spraying liquids such as chemical liquids, liquid fertilizers, and water onto agricultural crops, for example. The present invention relates to an improvement of the rocking nozzle device configured as described above.

[0002]

[Prior Art]

 In various orchards and the like, liquid spraying vehicles are used in which workers board and spray the chemicals.

This liquid spraying vehicle is configured, for example, roughly as follows.

That is, a tank for storing a liquid such as a chemical liquid or water is mounted, and a pillar is attached to a rear portion of a machine body that is driven by an operator to operate the vehicle, and the liquid stored in the tank is attached to the pillar. A structure in which an appropriate number of nozzles for spraying are provided in multiple stages so that they can be swung up and down and back and forth, and the nozzles are swung by a drive device provided in the machine body, so that spraying is efficiently performed over a wide range. Is.

In the spraying vehicle having the above configuration, it is desirable that the support column is elongated and the liquid is sprayed from a higher position in order to widen the spraying range of the liquid.

On the other hand, if the pillars are made long, there is an inconvenience such as hindering the storage of the spray truck in a warehouse.

[0007] Therefore, conventionally, the strut is divided into an upper strut and a lower strut around the middle portion thereof, and both are hinged to each other, and when the spreader car is stored, the upper strut is folded forward of the machine body. Was used.

By the way, although an appropriate number of nozzles are provided on the upper strut and the lower strut in a multi-step manner in a vertical and forward / backward swinging manner, each nozzle provided on the upper strut and the lower strut are provided. Each of the nozzles thus constructed is powered by one of the drive motors of the drive device and is interlocked to swing. For this reason, gears and chains are provided in each column to transmit power to each nozzle, and gears that mesh with each other are provided in the upper portion of the lower column and the lower portion of the upper column. When the upper strut is folded, the gears are disengaged from each other, and when the upper strut is erected, the gears are engaged with each other and the nozzles provided on the upper strut and the nozzles provided on the lower strut are interlocked. It was configured to swing up and down and back and forth.

[0009]

[Problems to be solved by the device]

 However, in the above-mentioned conventional configuration, since each nozzle is interlocked using a gear or a chain, noise and vibration are large, and the structure is inevitably large and heavy as a whole. There was a drawback.

The present invention has been made in view of the above circumstances, and is an oscillating nozzle device having a refracting strut, in which each nozzle oscillates reliably and interlockingly with a simple structure. It is intended to be provided.

[0011]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the invention according to claim 1 is such that an upper strut and a lower strut are connected in a bendable manner, and nozzles are attached to both ends along each of these strut. Nozzle attachment members that are attached along the upper strut and nozzle attachment members that are attached along the upper strut, with both ends attached to each other so that they can swing vertically. The attachment members are connected to each other by connecting rods so that both ends of the attachment members swing vertically. Further, the lowermost nozzle attachment member of the upper strut and the uppermost nozzle attachment member of the lower strut are connected. The respective corresponding end portions are connected to each other by a flexible interlocking member so that the both end portions swing vertically in conjunction with each other.

According to a second aspect of the present invention, the upper strut and the lower strut are flexibly connected to each other, and an upper turning shaft and a lower turning shaft are provided along each of these strut, and A suitable number of nozzle attachment members, with nozzles attached to both ends, are attached to the rotary shaft so that both ends are vertically swingable at appropriate intervals and are attached to the upper rotary shaft. The nozzle attaching members that are attached to each other and the nozzle attaching members that are attached to the lower rotating shaft are connected to each other by connecting rods so that both ends of them move up and down together. The lowermost nozzle attaching member and the uppermost nozzle attaching member of the lower rotary shaft are flexible interlocked with each other so that both end portions thereof interlock and swing up and down. Connected with each member, One end of each strut is connected to the nozzle mounting member side and the other end is connected to each rotating shaft side, and the rotating shafts are turned upside down as the end of the nozzle mounting member is vertically swung. The fulcrum of the moving lever is attached to each.

[0013]

[Action]

 The operation of the device according to claim 1 will be described.

When the driving device applies a vertical swinging force to the end of any one of the nozzle attaching members, the vertical swinging force is transmitted to each nozzle attaching member via the connecting rod.

For example, when the driving device applies a vertical swinging power to the end of one of the nozzle mounting members on the side of the lower strut, all the nozzle mounting members mounted along the lower strut are moved. Swing together. At this time, the lowermost nozzle mounting member of the upper strut and the uppermost nozzle mounting member of the lower strut are connected at their corresponding ends with a flexible interlocking member such as a rope, chain, or wire. Therefore, the vertical movement of both ends of the nozzle attachment member attached along the lower support column is caused by the nozzle attachment member provided along the upper support column via the flexible interlocking member. Be transmitted to. Further, since the nozzle attaching members attached along the upper support are also connected by the connecting rods, as a result, all the nozzle attaching members attached along the respective supports are interlocked to move up and down. Move.

Since the lowermost nozzle mounting member of the upper strut and the uppermost nozzle mounting member of the lower strut are connected by the flexible interlocking member as described above, the upper strut is connected to the lower strut. When, for example, bending forward, the flexible interlocking member is loosened and the interlocking is interrupted, and when the upper strut is erected, the flexible interlocking member is tensioned and can interlock.

Next, the operation of the device according to claim 2 will be described.

According to a second aspect of the invention, in addition to the operation of the first aspect of the invention, both ends of each nozzle attachment member are horizontally swung. A duplicate description of the same operation as that of claim 1 will be omitted.

That is, since each of the nozzle attachment members is attached to the upper rotation shaft and the lower rotation shaft that are rotatably provided along the upper strut and the lower strut, both ends thereof are It can swing horizontally around the rotation axis. Then, by the rocking levers provided on each of the columns, the vertical rocking force of both ends of the nozzle attachment member is transmitted so as to reversely rotate the upper rotary shaft and the lower rotary shaft. Therefore, both ends of each nozzle mounting member swing vertically, and at the same time, swing horizontally around the rotary shaft.

[0020]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a liquid spraying vehicle to which an oscillating nozzle device according to an embodiment of the present invention is attached. In the figure, reference numeral 1 denotes a tank 2 for storing a liquid such as agricultural chemicals in the rear part. Shows the equipped aircraft. The machine body 1 is provided with a driver's seat 3, wheels 4, etc., and is operated by an operator boarding the driver's seat 3 and performing various operations.

A body hitch (not shown) is provided at the rear of the tank 2, and the swing nozzle device 5 of the present invention is directly attached to the body hitch.

In the swing nozzle device 5 (the spray liquid piping system is omitted since it is not related to the gist of the present invention), the upper strut 6 and the lower strut 7 have hinges 28 as shown in FIG. The upper support column 6 is bent vertically toward the front of the machine body 1 above the tank 2 and is tilted.

The lower column 7 is a square pole made of hollow steel, and is attached to the body hitch at the lower side thereof. Thrust bearings 8a and 8b are vertically mounted on the front surface 7a of the lower strut 7 (the surface facing the tank 2 of the machine body 1), and the lower rotating shaft 9 is supported by these bearings 8a and 8b. However, it is rotatable while being restricted in vertical movement.

An appropriate number of nozzle attachment members 10 (each indicated by 10 a, 10 b, 10 c) are attached to the lower rotation shaft 9 at appropriate intervals in the vertical direction. Each of these nozzle attachment members 10 is formed of a horizontally elongated flat plate body, and is pivotally attached to the lower rotation shaft 9 at the center thereof so that both end portions of the machine body 1 extending in the left-right direction swing up and down. Is becoming. In the illustrated embodiment, the nozzle attachment members 10 are provided at three positions, that is, the upper and lower end portions and the intermediate portion of the lower rotation shaft 9.

A lower end of the drive connecting rod 11 is rotatably attached to one end of the lowermost nozzle attaching member 10c of the nozzle attaching member 10, and a cam 12 is attached to an upper end of the drive connecting rod 11. It is connected to the rotating shaft of the motor 13 attached to the lower part of the lower support column 7 via the. As a result, when the motor 13 is rotationally driven, the rotation of the rotary shaft of the motor 13 causes the drive connecting rod 11 to reciprocate up and down by the action of the cam 12, so that the left and right ends of the nozzle mounting member 10c are reciprocally moved. It swings up and down about the shaft attachment portion 14c to the lower rotation shaft 9.

Since the other end side of each of the nozzle attaching members 10a, 10b, 10c is connected by the nozzle attaching member connecting rods 15a, 15b, respectively, the left and right end portions of the lowermost nozzle attaching member 10c are connected. The vertical swing is transmitted to the other nozzle attachment members 10a, 10b, and the left and right ends of all the nozzle attachment members 10 are simultaneously centered on the shaft attachment portions 14a, 14b, 14c on the lower rotation shaft 9. Swing up and down. In the embodiment shown in the drawings, the vertical swing widths of the left and right end portions of each nozzle attachment member 10 are set to 15 degrees above and below the horizontal state.

Nozzles 16 are attached to the respective left and right ends of the nozzle mounting member 10, and the nozzles 16 are vertically moved by interlocking vertical swing motions of the nozzle mounting members 10. Move back and forth. Each nozzle 16 is connected to the tank 2 mounted on the machine body 1 by a piping system including a hose 17 and a pump (not shown), and the liquid from the nozzle 16 is operated by operating the driver's seat 3 of the machine body 1. Dispersion is controlled.

In the uppermost stage nozzle attachment member 10a attached to the lower rotary shaft 9, the side where the nozzle attachment member connecting rod 15a is connected and the left and right sides are shaken via a ball joint A. The upper end of the moving lever connecting rod 18 is connected. The lower end of the swing lever connecting rod 18 is connected to one end 19a of a dogleg-shaped swing lever 19 via a ball joint B, as shown in FIG. The rocking lever 19 is rotatably supported by the lower strut 7 by a pivot shaft 20 that projects laterally from the rear side of the lower strut 7 at its bending portion 19b.

One end of a rotating shaft connecting rod 21 is connected to the other end 19c of the swing lever 19 via a ball joint C, and the other end of the rotating shaft connecting rod 21 is connected to the lower rotating shaft 9 It is connected via a ball joint D to the outer end of the pin 22 which is fixed horizontally.

According to the above configuration, when the left and right ends of the uppermost nozzle mounting member 10a of the lower support column 7 swings up and down, the swing lever 19 is moved up and down to cause the swing lever 19 to move up and down. Since one end 19a of the swing lever moves up and down with the fixed shaft 20 as a fulcrum, the other end 19a of the swing lever reciprocates in the horizontal direction, and the ball joint D and the ball joint D and the The lower rotation shaft 9 rotates via the pin 22. Here, strictly speaking, the connecting portion between the swing lever connecting rod 18 and the swing lever 19 and the connecting portion between the swing lever 19 and the rotating shaft connecting rod 21 simply perform a vertical or horizontal linear motion. Instead, it is intended to make a linear motion along an arc of the swing lever 19 centered on the pivot shaft 20, but these joints are provided with ball joints as described above. Since it is used, no unnatural force is applied to each place.

When the lower rotating shaft 9 is rotated as described above, the nozzle mounting member 10 fixed to the lower rotating shaft 9 is moved to the left and right around the central axis of the lower rotating shaft 9. Invert and rotate. Since the left and right ends of the nozzle mounting members 10 move up and down as described above, the nozzle mounting members 10 rotate left and right around the central axis of the lower rotating shaft 9. The left and right ends thereof move up and down. In the embodiment shown in the drawings, the rotation angle of the nozzle mounting member 10 in the horizontal direction is 15 degrees in each of the front and rear directions.

As shown in FIG. 2, the upper strut 6 is a square pillar having the same cross-sectional shape as the lower strut 7, and has the same structure as the lower strut 7 and has a front surface 6 a (a turret of the body 1). The upper rotary shaft 23 is provided along the surface (opposite to the link 2). A nozzle attaching member 24 (each indicated by 24a and 24b) consisting of a flat plate elongated in the left and right direction is axially attached to the upper rotating shaft 23 at the central portion thereof. The left and right end portions of 24 are vertically swingable. The nozzle attachment member 24 is provided in a multi-stage vertically with respect to the upper rotary shaft 23, as in the lower column 7. In the illustrated embodiment, one is attached near the upper and lower ends of the upper rotary shaft 23.

The nozzle attaching members 24 are connected by a connecting rod 25 in the same manner as that provided along the lower support 7, and the left and right ends thereof are interlocked and swing up and down. There is.

The nozzle 16 is attached to the nozzle mounting member 24, the nozzles 16 are connected to the tank 2 via hoses 17, etc. This is similar to the case of the nozzle attachment member 10 attached to the shaft 9.

The lowermost nozzle mounting member 24b mounted on the upper rotating shaft 23 and the uppermost nozzle mounting member 10a mounted on the lower rotating shaft 9 have corresponding left and right end portions. Are connected by cables 26a and 26b, which are flexible interlocking members such as steel wires having excellent strength and chemical resistance. As a result, when the left and right ends of the nozzle attachment member 10 attached to the lower rotary shaft 9 are vertically swung as described above, the nozzle attachment attached to the upper rotary shaft 23 is interlocked with it. The member 24 will have the same movement.

Further, the upper rotary shaft 23 has a structure similar to that of the lower rotary shaft 9 and is rotated around the central axis thereof as the left and right end portions of the nozzle mounting member 24 are vertically swung. It is designed to rotate. Since the mechanism for rotating the upper rotating shaft 9 is the same as that of the lower rotating shaft 9, the same reference numerals as above are given to the drawing (FIG. 2) and the description of the overlapping parts is omitted. However, since the upper rotary shaft 23 and the lower rotary shaft 9 need to be rotated in the same direction at the same time in the reverse direction, in the illustrated embodiment, a swing for rotating the upper rotary shaft 23 is performed. A moving lever 19 and a swing lever 19 for rotating the lower rotating shaft 9 are arranged upside down, and are arranged on the left and right opposite sides of the supporting columns 6 and 7 about the rotating shafts 23 and 9, respectively. is doing.

Next, the structure of the connecting portion between the upper strut 6 and the lower strut 7 will be described with reference to FIGS. 4 to 6.

A connecting body 27 for connecting the upper strut 6 and the lower strut 7 is interposed between the upper strut 6 and the lower strut 7. In the embodiment shown in the drawings, the connecting body 27 is made of U-shaped steel in a cross-sectional plan view, and the lower end of the upper strut 6 and the upper end of the lower strut 7 are provided inside the upper and lower ends with the open side surface 27a facing rearward. Accept.

A first plate body 28a constituting a hinge 28 is obliquely fixed to an upper portion of the front surface 7a of the lower strut 7, and both ends of a shaft 28b of the hinge 28 are fixed to left and right side surfaces of the connecting body 27. To be done. On the other hand, the side edges of the second plate body 28c constituting the hinge 28 are horizontally fixed to the inner side surface of the connecting body 27, and as a result, the connecting body 27 is formed at the upper end portion of the lower strut 7 at the upper end portion. The hinge 28 is rotatable about the rotation shaft 28b (hereinafter, referred to as "front rotation shaft") toward the machine body 1 (front). The second plate 28c forming the hinge 28 comes into close contact with the upper end of the lower strut 7 in a state where the connecting body 27 stands upright on the lower strut 7, and the connecting body 27 falls rearward. To prevent that.

At the lower end of the upper support column 6, an inclined surface 29 that is inclined downward from the rear to the front in the upright state and protrudes forward from the front surface 6a is formed, and the front portion of the inclined surface 29 is formed. 29a is rotatably attached to a shaft 30 inserted between the left and right side surfaces of the connecting body 27. As a result, the upper support column 6 is rotatable rearward using the shaft 30 as a rotation shaft (hereinafter, referred to as “rear rotation shaft”).

On the other hand, the upper support column 6 does not fall forward around the backward rotation shaft 30. This is because the stopper 31 that is in contact with the lower portion of the front surface 6a of the upper support column 6 and that prevents the upper support column from rotating forward is fixed to the upper portion of the rear surface of the connecting body 27.

In the figure, reference numeral 32 denotes a spring, the upper and lower ends of which are attached to the lower portion of the front surface 6 a of the upper strut 6 and the brackets 33 a and 33 b which are provided on the lower portion of the front surface of the connecting body 27 so as to project forward. It is connected. The upper column 6 is always urged forward by the spring 32 around the rearward rotating shaft 30 and does not rotate rearward in a normal state.

As described above, the upper strut 6 can be rotated only rearward about the rearward rotating shaft 30. The reason is that the machine body 1 to which the swing nozzle device 5 of the present embodiment is attached advances to the warehouse. In the case of entering the warehouse, even if the upper strut 6 accidentally collides with the warehouse entrance, the so-called safety trip prevents the upper strut 6 from escaping backward and damaging the swing nozzle device 5. This is because it has a function.

With the above structure, the upper support column 6 is rotatable only forward with the connecting body 27 about the front rotating shaft 28b, and is only rotatable rearward about the rear rotating shaft 30. It is movable. It should be noted that the wires 26a and 26b are connected to the two rotation shafts (the front rotation shaft 28 and the rear rotation shaft 30 when the upper strut 6 and the connecting body 27 are erected on the lower strut 7). ) Is stretched so as to pass through the line connecting the points), and it is considered that the upper strut will be relaxed comfortably when it falls in either the forward or rearward direction.

When the upper support column 6 and the connecting body 27 are rotated 90 degrees forward about the front pivot shaft 28b, a stay provided between the upper support column 6 and the lower support column 7 is provided. The rotation of the link 34 is stopped by the action of the link 34. That is, the upper end bearing portions 35, 35 of the stay link 34 are rotatably connected to both ends of the rear rotation shaft 30 that project outward from the left and right side surfaces of the connecting body 27, respectively, and the lower support shaft is rotated. The left and right guide plates 36, 36 fixed to the left and right side surfaces of the upper portion of the upper portion 7 of the guide 7 so as to slide the long holes 37, 37 provided in the up-down direction of the stay link 34. The traverse rod portion 34a at the lower end is inserted. When the upper strut 6 rotates 90 degrees forward around the front rotation shaft 28b together with the connecting body 27, the traverse rod portion 34a at the lower end of the stay link 34 comes to the lower ends of the elongated holes 37, 37. It abuts and stops the further forward rotation of the upper strut 6 and the connecting body 27.

Reference numeral 38 in the drawing denotes a hook for preventing the connecting body 27 from rotating forward together with the upper support column 6.

According to the swing nozzle device 5 of the present embodiment configured as described above, when the liquid is sprayed, the upper support column 6 is placed on the lower support column 7 via the connecting body 27. When the motor 13 provided at the lower part of the lower support column 7 is operated while standing upright and running the machine body 1, the drive connecting rod 11, the nozzle attachment member connecting rods 15b, 15a on the lower rotating shaft 9 side, Through the wires 26a and 26b and the nozzle attachment member connecting rod 25 on the upper rotary shaft 23 side, both ends of all the nozzle attachment members 10 and 24 described above are vertically swung up and down by a predetermined angle. At the same time, the upper pivot shaft 23 and the lower pivot shaft 9 pivot by a predetermined angle through the movements of the pivot lever connecting rod 18 and the pivot lever 19. As a result, the nozzles 16 attached to the left and right end portions of the nozzle attachment members 10 and 24 perform a swinging motion that is a combination of forward and backward movements and vertical movements, and the inside of the tank 2 mounted on the machine body 1 is moved. It is possible to disperse the above liquid effectively over a wide range.

On the other hand, when the swing nozzle device 5 is not used, that is, when the machine body 1 is run without spraying the liquid from the nozzles 16 for movement or the like, or when the machine body 1 is stored in a warehouse. In such a case, the spring-biased locking hook 38 arranged on the upper end of the lower column 7 is released from the locking hole 28d formed in the second plate 28c of the connecting body 27, The upper support column 6 is pivoted forward together with the connecting body 27 and tilted above the tank 2. When the upper strut 6 is bent 90 degrees with respect to the lower strut 7, the rotation of the upper strut 6 is stopped by the action of the stay link 34 and the elongated hole 37.

When the upper strut 6 is tilted forward, the wires 26 a and 26 b are loosened. Therefore, the nozzle mounting member 10 provided on the lower rotating shaft 9 and the nozzle mounting member provided on the upper rotating shaft 23 are attached. The connection of the power system of the attachment member 24 is automatically cut off.

Even if the upper strut 6 moves forward toward the warehouse or the like without tilting the upper strut 6 forward, and the upper strut 6 comes into contact with the entrance of the warehouse, the upper strut 6 is prevented by the safety trip function. Since it is configured so as to rotate backward about the shaft 30 for backward rotation and to escape, there is no fear of damaging the swing nozzle device 5.

[0052]

[Effect of the device]

 According to the present invention according to claim 1, each nozzle can be reliably interlocked and vertically rocked by a simple structure, and the strut can be bent very easily, so that noise and vibration generated by the nozzle rocking are generated. There is also an effect such as no.

According to the second aspect of the invention, each nozzle also swings back and forth in conjunction with the vertical swing, and the liquid is sprayed while performing a complex swing motion of these nozzles. In addition, there is an advantage that the spraying range becomes wider and the spraying efficiency and spraying efficiency are improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a liquid spraying vehicle including an oscillating nozzle device according to an embodiment of the present invention.

2 is an overall perspective view of the swing nozzle device shown in FIG. 1. FIG.

FIG. 3 is a perspective view of an essential part showing a rotating mechanism of a rotating shaft that is interlocked with a nozzle mounting member.

FIG. 4 is a rear perspective view showing a connecting structure of an upper strut and a lower strut.

FIG. 5 is a rear perspective view showing a state in which an upper column is tilted forward of the machine body.

FIG. 6 is a vertical cross-sectional side view showing a connecting structure of an upper strut and a lower strut.

[Explanation of symbols]

6 Upper Strut 7 Lower Strut 9 Lower Rotation Shaft 10 Lower Strut Side Nozzle Attachment Member 15a, 15b (for Lower Strut Side Nozzle Attachment Member) Connecting Rod 16 Nozzle 23 Upper Rotation Shaft 24 Upper Strut Side Nozzle Attachment Attachment member 25 Connection rods 26a, 26b (of the nozzle attachment member on the upper strut side) Flexible interlocking member 19 Swing lever 19a Swing lever one end 19c Swing lever other end 20 Swing lever fulcrum

Claims (2)

[Scope of utility model registration request] 1. An upper strut 6 and a lower strut 7 are flexibly connected to each other, and a nozzle 1 is provided at both ends along each strut.
A suitable number of nozzle attachment members 24, 10 to which 6 are attached, are attached at appropriate intervals to each other so that both ends thereof are vertically swingable, and the nozzle attachment is attached along the upper support column 6. The members 24 and the lower column 7
The nozzle attachment members 10 attached along the above are connected by connecting rods 25, 15a, 15b so that both ends thereof are interlocked and vertically rocked, and further, the nozzle attachment members at the lowermost stage of the upper support column 6 are connected. Attachment member 24b and the lower support 7
The nozzle attaching member 10a at the uppermost stage is configured such that both corresponding end portions are connected by flexible interlocking members 26a and 26b, respectively, so that both end portions thereof move up and down in conjunction with each other. Characteristic swing nozzle device. 2. The upper strut 6 and the lower strut 7 are flexibly connected to each other, and an upper turning shaft 23 and a lower turning shaft 9 are provided along the respective struts, and the turning shafts 23,
An appropriate number of nozzle attachment members 24, 10 to which the nozzles 16 are attached at both ends thereof, are attached to the reference numeral 9 so as to be vertically swingable at appropriate intervals, and the upper rotary shaft 23 The nozzle attachment members 24 attached to each other and the nozzle attachment members 10 attached to the lower rotary shaft 9 are connected to each other so that both ends thereof are vertically oscillated. Connected by
The lowermost nozzle mounting member 24b of the upper rotary shaft 23 and the uppermost nozzle mounting member 10a of the lower rotary shaft 9 are so arranged that their both ends are interlocked and vertically rocked. The corresponding both ends are flexible interlocking members 26a, 26.
b, each of which is further connected to each of the columns 6 and 7,
One end 19a is connected to the nozzle mounting members 24b and 10a side, and the other end 19c is connected to the rotary shafts 23 and 9 side. An oscillating nozzle device in which a fulcrum 20 of an oscillating lever 19 for reversing and rotating each rotating shaft 23, 9 is attached.