JP7239391B2 - Boom device - Google Patents

Description

The present invention relates to a boom device.

BACKGROUND ART Conventionally, a boom device mounted on a vehicle body is known. For example, the boom device described in Patent Literature 1 has a root side boom and a tip side boom. A lighting lamp is attached to the tip of the boom to illuminate the vicinity of the tip of the boom. The lamp is connected by an electric circuit to a power source mounted on the vehicle body.

Japanese Patent Application Laid-Open No. 2001-112397

However, when an electrical component such as an illumination lamp is provided on the boom, wiring for supplying power to the electrical component may become complicated. Therefore, it is required to easily supply electric power to the electric parts provided on the boom.

An object of one aspect of the present invention is to provide a boom device capable of easily supplying electric power to electrical components provided on the boom.

A boom device (100) according to one aspect of the present invention comprises a boom body (101) mounted on a vehicle (2) capable of traveling, an electrical part (150) attached to the boom body (101), and a boom body. a generator (140) attached to (101), the electrical component (150) being electrically connected to the generator (140).

In the boom device (100) described above, both the electrical component (150) and the generator (140) electrically connected to the electrical component (150) are attached to the boom body (101). Therefore, wiring for supplying electric power to the electric component (150) is suppressed from becoming complicated. Therefore, power can be easily supplied to the electrical component (150) provided on the boom body (101).

Further, a liquid feed pipe (121) is fixed along the length of the boom body (101) and has a nozzle (121a) for spraying the liquid. Electricity may be generated by powering the flow of liquid supplied to the . In this configuration, the flow of liquid sprayed from the nozzle (121a) is used as power, so there is no need to separately prepare power for the generator (140).

Also, the generator (140) may be connected to the proximal end of the liquid transfer tube (121). In this configuration, since the generator (140) is arranged upstream of the nozzle (121a), the flow of the liquid supplied to the liquid feed pipe (121) can be used as power without loss.

In addition, the electrical component (150) is arranged along the length of the liquid transfer tube (121), and the power input portion (155) of the electrical component (150) extends along the length of the liquid transfer tube (121). In terms of direction, it may be provided on the proximal end side of the liquid feeding pipe (121). In this configuration, since the power input section (155) of the electrical component (150) is arranged near the generator (140), the connection between the generator (140) and the electrical component (150) can be easily made. can.

The boom body (101) also includes a first boom (110) connected to the vehicle (2) and a second boom (120) that slides along the first boom (110). (150) and a generator (140) may be provided on at least the second boom (120). With this configuration, even if the positional relationship between the first boom (110) and the second boom (120) changes due to the sliding movement, the electrical component (150) attached to the second boom (120) and the generator (150) can be changed. ) does not change. Therefore, it is possible to prevent the wiring that connects the generator (140) and the electric component (150) from becoming complicated.

According to the boom device according to one aspect of the present invention, power can be easily supplied to the electrical components provided on the boom.

1 is a perspective view of an example boom sprayer; FIG. 1 is a perspective view of an example slide boom; FIG. It is a cross-sectional view of the first boom. FIG. 4 is a cross-sectional view of a second boom; It is a sectional view of a 3rd boom. It is a schematic diagram showing a hydraulic generator typically. It is a top view which shows a light irradiation apparatus typically. It is a schematic diagram which shows the electrical system which concerns on a light irradiation apparatus.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. For the sake of convenience, substantially the same elements are given the same reference numerals, and their description may be omitted.

FIG. 1 is a perspective view showing a state in which a boom sprayer on which a boom device is mounted is viewed from the rear. FIG. 2 is a perspective view of the boom device. FIG. 2 shows the extended state of the multi-stage boom device. FIG. 3 is a cross-sectional view of the first boom that constitutes the boom device. FIG. 4 is a cross-sectional view of a second boom that constitutes the boom device. FIG. 5 is a cross-sectional view of a third boom that constitutes the boom device. 3, 4 and 5, each boom is viewed from the distal end to the proximal end.

The boom sprayer 1 has a vehicle 2 equipped with wheels and a boom device 100 attached to the vehicle 2 . The boom sprayer 1 sprays a liquid such as a chemical liquid stored in a liquid tank 10 mounted on the vehicle 2 while running the vehicle 2 in a field. In the illustrated example, the boom sprayer 1 having a self-propelled vehicle 2 is shown, but the vehicle may travel by being towed by a self-propelled body such as a tractor. In the following description, "front", "rear", "left" and "right" are based on the boom sprayer 1 unless otherwise specified.

The boom device 100 is attached to one or both left and right ends of the rear portion of the vehicle 2 . It should be noted that FIG. 1 shows only the boom device 100 arranged on the right side toward the front of the vehicle. In this embodiment, the boom device 100 is a multistage slide boom (telescopic boom) including a proximal boom connected to the vehicle 2 and a distal boom connected to the proximal boom. The illustrated boom device 100 has a boom body including a first boom 110, a second boom 120 that slides along the first boom 110, and a third boom 130 that slides along the second boom 120. 101. Further, in the illustrated example, a center boom 3 is attached to the rear portion of the vehicle 2 . A plurality of nozzles (not shown) are arranged on the center boom 3 so as to be separated from each other in the longitudinal direction. A chemical liquid is sent from a liquid tank 10 to the nozzle of the center boom 3 through a pipe.

The first boom 110 is an elongated member extending in one direction. A base end of the first boom 110 is attached to the frame of the vehicle 2 so that the first boom 110 can swing in both horizontal and vertical directions. When the chemical solution is sprayed, the swinging motion of the first boom 110 is controlled such that the length direction of the boom device 100 is aligned with the horizontal direction, for example.

As shown in FIG. 3 , the first boom 110 has a tubular liquid-sending pipe 111 . The liquid feed pipe 111 is fixed to the lower part of the first boom 110 by a fixing member so as to be arranged along the length direction of the first boom 110 . A plurality of nozzles 111a are arranged in the liquid-sending pipe 111 so as to be spaced apart from each other along the length direction. The liquid-sending pipe 111 is connected to the liquid tank 10 via, for example, a connection hose. The nozzle 111a is arranged such that the jet port 111b faces downward when the length direction of the first boom 110 is along the horizontal direction. That is, the chemical liquid is jetted downward from the jet port 111b of the nozzle 111a. In the illustrated example, the position of the nozzle 111a is offset to the right side with respect to the liquid feeding pipe 111 when viewed from the distal end of the first boom 110 toward the proximal end.

The second boom 120 is an elongated member extending in one direction. The second boom 120 has a cylindrical liquid-sending pipe 121 . The liquid feed pipe 121 is fixed to the lower part of the second boom 120 by a fixing member so as to be arranged along the length direction of the second boom 120 . A plurality of nozzles 121a are arranged in the liquid-sending pipe 121 so as to be spaced apart from each other along the length direction. The nozzle 121a is arranged such that the jet port 121b faces downward when the length direction of the second boom 120 is along the horizontal direction. That is, the chemical liquid is jetted downward from the jet port 121b of the nozzle 121a. In the illustrated example, the position of the nozzle 121a is offset to the right with respect to the liquid feeding pipe 121 when viewed from the distal end of the second boom 120 toward the proximal end.

The second boom 120 is supported by the first boom 110 outside the first boom 110 and slides along the length direction of the first boom 110 . For example, in the present embodiment, the first boom 110 has an upper wall portion 113 and a lower wall portion 114 that protrude outward along the length direction on one of the left and right side surfaces. The upper wall portion 113 and the lower wall portion 114 are separated from each other in the vertical direction. Grooves 113a and 114a extending in the longitudinal direction of the first boom 110 are formed in the inner surface of the upper wall portion 113 and the inner surface of the lower wall portion 114, respectively. On the other hand, the upper surface 123 and the lower surface 124 of the second boom 120 are formed with grooves 123a and 124a extending in the longitudinal direction of the second boom 120, respectively. As an example, a pair of slide rollers (not shown) provided vertically apart from each other on the base end side of the second boom 120 are engaged with the grooves 113a and 114a of the first boom 110, and the first boom 110 A pair of slide rollers (not shown) provided vertically apart from each other on the tip side of the boom 120 are engaged with the grooves 123 a and 124 a of the second boom 120 . These grooves 113 a , 114 a , 123 a , 124 a and slide rollers allow the second boom 120 to slide along the length of the first boom 110 .

The third boom 130 is an elongated member extending in one direction. The third boom 130 has a cylindrical liquid-sending pipe 131 . The liquid feed pipe 131 is fixed to the lower portion of the third boom 130 by a fixing member so as to be arranged along the length direction of the third boom 130 . A plurality of nozzles 131a are arranged in the liquid-sending pipe 131 so as to be spaced apart from each other along the length direction. The nozzle 131a is arranged so that the injection port 131b faces downward when the length direction of the third boom 130 is along the horizontal direction. That is, the chemical liquid is jetted downward from the jet port 131b of the nozzle 131a. In the illustrated example, the position of the nozzle 131a is offset to the left with respect to the liquid feeding pipe 131 when viewed from the distal end of the third boom 130 toward the proximal end.

The third boom 130 is supported by the second boom 120 outside the second boom 120 and slides along the length direction of the second boom 120 . For example, in the present embodiment, the second boom 120 has an upper wall portion 125 and a lower wall portion 126 that protrude outward along the length direction on one of the left and right side surfaces. The upper wall portion 125 and the lower wall portion 126 are separated from each other in the vertical direction. Grooves 125a and 126a extending in the longitudinal direction of the second boom 120 are formed in the inner surface of the upper wall portion 125 and the inner surface of the lower wall portion 126, respectively. On the other hand, grooves 133a and 134a are formed in the upper surface 133 and the lower surface 134 of the third boom 130 so as to extend in the longitudinal direction of the third boom 130, respectively. As an example, a pair of slide rollers (not shown) provided vertically apart from each other on the base end side of the third boom 130 are engaged with the grooves 125a and 126a of the second boom 120, and the second boom 120 A pair of slide rollers (not shown) provided vertically apart from each other on the tip side of the third boom 130 are engaged with the grooves 133 a and 134 a of the third boom 130 . These grooves 125a, 126a, 133a, 134a and slide rollers allow the third boom 130 to slide along the length of the second boom 120. As shown in FIG.

As shown in FIG. 1, the base end of the first boom 110 is fixed with a strut 117A extending upward. A supporting member 117B horizontally protruding to the side is formed in the middle of the column 117A. A support 117</b>C extending upward is fixed to the tip of the first boom 110 . A support 117D is formed in the middle of the column 117C and projects horizontally on the same side as the support 117B. A vertically extending support 127A is fixed to the base end of the second boom 120 . A post 127B extending upward is fixed to the tip of the second boom 120 .

Wires 18 and 28 are provided between the upper end of the support 117A and the upper end of the support 117C, between the upper end of the support 117B and the tip of the support 117D, and between the support 127A and the support 127B, respectively. , 38 are stretched (FIGS. 1 and 2). That is, the wires 18 , 28 are arranged along the first boom and the wire 38 is arranged along the second boom 120 . The wires 18, 28, 38 are parallel to each other, and coil hoses 19, 29, 39 are extendably suspended from the base ends of the wires 18, 28, 38 respectively.

A proximal end of the coil hose 19 is connected to the liquid tank 10 via a pipe provided on the support 117A. The distal end of the coil hose 19 is connected to the proximal end of the connecting hose 17 having flexibility. The tip of the connection hose 17 is connected to a liquid feed pipe 121 fixed along the length direction of the second boom 120 via a hydraulic power generator 140A (140). In one example, the hydraulic power generator 140A is connected to the proximal end of the liquid transfer pipe 121 at the proximal end of the second boom 120 . Since the connection hose 17 is connected to the liquid feed pipe 121, when the second boom 120 slides with respect to the first boom 110, the coil hose 19 is pulled by the connection hose 17 and extends along the wire 18, Conversely, when the second boom 120 returns, it contracts.

FIG. 6 is a schematic diagram schematically showing a hydraulic power generator (generator) 140, which is an example of the hydraulic power generator 140A. As shown in FIG. 6 , the hydroelectric generator 140 includes a main body 142 , a water inlet section 141 for allowing liquid to flow into the main body 142 , and a water outlet section 143 for discharging liquid from the main body 142 . The main body 142 incorporates a waterwheel that is rotated by the liquid that has flowed from the water inlet 141 and a conversion part that converts the rotation of the waterwheel into electric power. Further, the main body 142 is provided with a wire harness 142a for outputting electric power generated by the power generation to the outside.

Both the water inlet portion 141 and the water outlet portion 143 are cylindrical, and the outer peripheral surface thereof is threaded. In this embodiment, the tip of the connecting hose 17 is connected to the water inlet portion 141 by a connecting member. Also, the proximal end of the liquid feeding pipe 121 is connected to the water outlet 143 by a connecting member. With this configuration, the pesticide or the like to be sprayed passes through the coil hose 19 and the connecting hose 17, passes through the hydroelectric power generator 140A, and is then supplied to the liquid feed pipe 121. As shown in FIG. Hydraulic power generator 140A generates power when agricultural chemicals or the like pass through hydraulic power generator 140A.

A proximal end of the coil hose 29 is connected to the liquid tank 10 via a pipe provided on the support 117A. The distal end of the coil hose 29 is connected to the proximal end of the coil hose 39 via a pipe 27 fixed to the proximal end of the second boom 120 . A distal end of the coil hose 39 is connected to a proximal end of the connecting hose 37 having flexibility. The tip of the connection hose 37 is connected to a liquid feed pipe 131 fixed along the length direction of the third boom 130 via a hydraulic power generator 140B (140) similar to the hydraulic power generator 140A. In this embodiment, the tip of the connecting hose 37 is connected to the water inlet 141 by a connecting member. Also, the proximal end of the liquid-sending pipe 131 is connected to the water outlet 143 by a connecting member. In one example, the hydraulic power generator 140B is connected to the proximal end of the liquid transfer pipe 131 at the proximal end of the third boom 130 . With this configuration, the pesticide or the like to be sprayed is supplied to the liquid feed pipe 131 after passing through the coil hose 29, the pipe 27, the coil hose 39, and the connecting hose 37 and the hydraulic power generator 140B. Hydraulic generator 140B generates electricity when agricultural chemicals or the like pass through hydraulic generator 140B.

In addition, since the pipe 27 is fixed to the support 127A of the second boom 120, when the second boom 120 slides with respect to the first boom 110, the coil hose 29 is pulled by the pipe 27 and is pulled along the wire 28. , and conversely contracts when the second boom 120 returns. In addition, since the connection hose 37 is connected to the liquid feed pipe 131 at the base end of the third boom 130 , when the third boom 130 slides with respect to the second boom 120 , the coil hose 39 is connected to the connection hose 37 . It stretches along the wire 38 when it is pulled, and conversely contracts when the third boom 130 returns.

Moreover, in this embodiment, the boom device 100 is provided with the light irradiation device 150 arranged along the length direction of each boom. The light irradiation device 150 is arranged so as to irradiate the injection range of the plurality of nozzles 111a, 121a, 131a with light. That is, the light irradiation device 150 is arranged so as to irradiate the chemical solution jetted from the plurality of nozzles 111a, 121a, and 131a.

FIG. 7 is a plan view schematically showing the light irradiation device. As shown in FIG. 7 , the light irradiation device (electrical component) 150 is a so-called LED tape, and has a base 151 extending along the length direction with one direction as the length direction, and a length on the base 151 . and a plurality of LED chips (LED light sources) 153 arranged along the vertical direction. For example, the plurality of LED chips 153 are arranged at equal intervals in the length direction. The respective LED chips 153 may be electrically connected to each other in parallel by wiring (circuit) formed on the base 151 . One end of the base 151 is attached with a wire harness (power input unit) 155 electrically connected to each LED chip 153 via wiring formed on the base 151 . When lighting the LED chips 153 , power is supplied to each LED chip 153 through the wire harness 155 . Further, an adhesive layer, for example, for installing (fixing) the light irradiation device 150 may be formed on the back surface 151b of the base 151 opposite to the top surface 151a on which the LED chip 153 is arranged. Also, the LED chip 153 arranged on the base 151 may be covered with a translucent resin.

In this embodiment, the boom device 100 includes a light irradiation device 150A (150) arranged on the first boom 110, a light irradiation device 150B (150) arranged on the second boom 120, and a third boom 130. and a light irradiation device 150C (150).

As shown in FIG. 3 , the light irradiation device 150A is arranged such that the length direction of the base 151 is along the length direction of the first boom 110 . For example, the light irradiation device 150A is arranged along the liquid-sending pipe 111 at a position closer to the second boom 120 than the position where the liquid-sending pipe 111 is arranged on the lower surface of the first boom 110 . In the vertical direction (Z direction), the light irradiation device 150A and the liquid feeding pipe 111 are positioned at substantially the same height. In the illustrated example, the height position of the light irradiation device 150A is located in the range from the upper end to the lower end of the liquid feeding pipe 111. As shown in FIG. Note that the wire harness 155 of the light irradiation device 150A may be arranged on the base end side of the first boom 110 in the length direction of the first boom 110 .

As shown in FIG. 4 , the light irradiation device 150B is arranged such that the length direction of the base 151 is along the length direction of the second boom 120 . For example, the light irradiation device 150B is arranged along the liquid-sending pipe 121 at a position closer to the third boom 130 than the position where the liquid-sending pipe 121 is arranged on the lower surface of the second boom 120 . In the vertical direction (Z direction), the light irradiation device 150B and the liquid feeding pipe 121 are located at substantially the same height. In the illustrated example, the height position of the light irradiation device 150B is located in the range from the upper end to the lower end of the liquid feeding pipe 121. As shown in FIG. The wire harness 155 of the light irradiation device 150B may be arranged on the base end side of the liquid feeding pipe 121 in the length direction of the liquid feeding pipe 121 .

As shown in FIG. 5 , the light irradiation device 150C is arranged such that the length direction of the base 151 is along the length direction of the third boom 130 . For example, the light irradiation device 150C is arranged along the liquid-sending pipe 131 at a position on the lower surface of the third boom 130 farther from the second boom 120 than the position where the liquid-sending pipe 131 is arranged. In the vertical direction (Z direction), the light irradiation device 150C and the liquid feeding pipe 131 are located at substantially the same height. In the illustrated example, the position of the light irradiation device 150C is positioned at substantially the same height as the upper end of the liquid feeding pipe 131. As shown in FIG. The wire harness 155 of the light irradiation device 150C may be arranged on the proximal end side of the liquid feeding pipe 131 in the length direction of the liquid feeding pipe 131 .

FIG. 8 is a schematic diagram showing an electrical system related to the light irradiation device. 150 A of light irradiation apparatuses are electrically connected with the power supply 5 mounted in the vehicle 2 in this embodiment. One end of a wire harness (first wiring) 6 is electrically connected to the power supply 5 . A switch 7 for controlling energization of the wire harness 6 is connected to the middle of the wire harness 6 . Although the vehicle 2 is omitted in FIG. 8 , the power source 5 and the switch 7 may be mounted on the vehicle 2 . A wire harness 155 of the light irradiation device 150A is electrically connected to the other end of the wire harness 6 .

The wire harness 155 of the light irradiation device 150B attached to the second boom 120 is electrically connected to the wire harness 142a of the hydraulic power generator 140A so that power from the hydraulic power generator 140A is supplied to the light irradiation device 150B. It is Moreover, the wire harness 155 of the light irradiation device 150C attached to the third boom 130 is electrically connected to the wire harness 142a of the hydraulic power generator 140B so that the electric power from the hydraulic power generator 140B is supplied to the light irradiation device 150C. It is connected to the.

150 A of light irradiation apparatuses light by the electric power supplied from the power supply 5 by operating the switch 7. FIG. The light irradiation device 150B is lit by the electric power of the hydraulic power generator 140A that generates electric power from the chemical liquid supplied to the liquid feeding pipe 121 when the chemical liquid is sprayed from the nozzle 121a. Similarly, the light irradiation device 150C is lit by electric power of the hydraulic power generator 140B that generates electric power from the chemical liquid supplied to the liquid feeding pipe 131 when the chemical liquid is sprayed from the nozzle 131a.

In the boom device 100 described above, both the light irradiation device 150 and the hydraulic power generator 140 electrically connected to the light irradiation device 150 are attached to the boom body 101 . That is, the second boom 120 is provided with a light irradiation device 150B and a hydraulic power generator 140A, and the third boom 130 is provided with a light irradiation device 150C and a hydraulic power generator 140B. Therefore, the wiring for supplying power from the hydraulic power generator 140A to the light irradiation device 150B becomes complicated, and the wiring for supplying power from the hydraulic power generator 140B to the light irradiation device 150C becomes complicated. Suppressed. Therefore, power can be easily supplied to the light irradiation device 150 .

Further, in the above-described embodiment, the positional relationship among the first boom 110, the second boom 120, and the third boom 130 changes due to the sliding movement of the boom body 101. As shown in FIG. In this case, in a mode in which power is supplied to the light irradiation devices 150B and 150C from a power source mounted on the vehicle 2, the wiring connecting the power source and the light irradiation devices 150B and 150C is the second boom 120 and the second boom 120. 3 It should be configured to follow the sliding movement of the boom 130 . In this embodiment, the positional relationship between the light irradiation device 150B attached to the second boom 120 and the hydraulic power generator 140A, and the positional relationship between the light irradiation device 150C attached to the third boom 130 and the hydraulic power generator 140B does not change, wiring that connects the hydraulic power generator 140 and the light irradiation device 150 is suppressed from becoming complicated.

Further, the hydraulic power generator 140A uses the flow of liquid supplied to the liquid feed pipe 121 as power to generate power, and the hydraulic power generator 140B uses the flow of liquid supplied to the liquid feed pipe 131 as power to generate power. In this configuration, the flow of the liquid sprayed from the nozzles 121a and 131a is utilized as power for the hydraulic power generator 140, so there is no need to prepare power for the hydraulic power generator 140 separately.

Also, the hydraulic power generator 140A is connected to the proximal end of the liquid feeding pipe 121, and the hydraulic power generator 140B is connected to the proximal end of the liquid feeding pipe 131. In this configuration, the hydraulic power generator 140A is arranged upstream of the nozzle 121a, and the hydraulic power generator 140B is arranged upstream of the nozzle 131a. Flow can be used as power without loss.

Moreover, the wire harness 155 of the light irradiation device 150A is provided on the base end side of the liquid feeding pipe 121 in the length direction of the liquid feeding pipe 121 . Similarly, the wire harness 155 of the light irradiation device 150B is provided on the base end side of the liquid feeding pipe 131 in the length direction of the liquid feeding pipe 131 . In this configuration, the wire harness 155 of the light irradiation device 150 is arranged near the hydraulic power generator 140 . Thereby, the hydraulic power generator 140 and the light irradiation device 150 can be easily connected.

As described above, one embodiment has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment.

For example, the electrical component is not limited to the light irradiation device, and may be other components or devices. For example, the electrical component may be an electrostatic sprayer for imparting static electricity to the sprayed chemical.

Further, although an example in which the light irradiation device 150A is supplied with electric power from the power source 5 mounted on the vehicle 2 is shown, the first boom 110 is provided with a hydraulic power generator that generates electric power from the chemical liquid supplied to the liquid feeding pipe 111. Thus, power may be supplied from the hydraulic power generator to the light irradiation device 150A.

2 Vehicle, 100 Boom device, 101 Boom body, 110 First boom, 120 Second boom, 121 Liquid feed pipe, 121 a Nozzle, 140 Hydraulic generator (generator), 150 Light irradiation Equipment (electrical parts).

Claims (4)

a boom body (101) mounted on a drivable vehicle (2);
an electrical component (150) attached to the boom body (101);
a generator (140) attached to the boom body (101);
A liquid feed pipe (121) fixed along the length direction of the boom body (101) and having a nozzle (121a) for spraying liquid,
the electrical component (150) is in electrical communication with the generator (140);
The generator (140) is powered by the flow of the liquid supplied to the liquid transfer pipe (121) and supplies power to the electric component (150) only when the liquid is flowing through the liquid transfer pipe (121). supply , boom apparatus (100). The boom apparatus (100) according to claim 1 , wherein the generator (140) is connected to the proximal end of the liquid transfer tube (121). The electrical component (150) is arranged along the length direction of the liquid transfer pipe (121),
3. The method according to claim 2 , wherein the power input section (155) in the electrical component (150) is provided on the base end side of the liquid feed pipe (121) in the length direction of the liquid feed pipe (121). A boom apparatus (100) as described. The boom body (101) includes a first boom (110) connected to the vehicle (2) and a second boom (120) that slides along the first boom (110), The boom arrangement (100) according to any one of the preceding claims, wherein the electrical component (150) and the generator ( 140 ) are provided on at least the second boom (120).

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