JP4978021B2 - Crane boom - Google Patents

Description

  The present invention relates to a boom of a crane.

  2. Description of the Related Art Conventionally, a boom of a crane is known in which a plurality of unit booms are connected in order in a longitudinal direction and assembled so as to have a predetermined total length (see, for example, Patent Document 1).

In the boom of a crane disclosed in the above-mentioned Patent Document 1, a storage for storing identification information such as the weight and length of each unit boom in each unit boom (described as a joint boom in Patent Document 1) constituting the boom. Each device is provided, and an arithmetic device that performs various calculations based on the identification information of each unit boom stored in the storage device is provided in the crane body. The storage device of each unit boom is electrically connected to the computing device by individual communication means such as cables, and the identification information of each unit boom is transmitted from each storage device to the computing device via each communication device. It has become so.
JP-A-7-33386

  However, in the boom of the conventional crane disclosed in Patent Document 1, since the storage devices of each unit boom are connected to the arithmetic unit by individual communication means, the number according to the number of unit booms constituting the boom Communication means is required, and the configuration of the communication means is complicated.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a crane boom capable of simplifying the configuration of communication means for transmitting identification information of each unit boom. It is.

In order to achieve the above object, the boom of the crane according to the present invention is connected in order from the crane body side, so that a plurality of unit booms constituting a boom body of a predetermined length as a whole, and each unit boom A first processing unit that outputs identification information of the provided unit boom, a second processing unit that is provided on the crane body side of the boom body and communicates with each first processing unit, a second processing unit, and A first processing unit of each unit boom is electrically connected in series in order from the crane body side to the tip side of the boom body, and communication means for transmitting identification information output from the first processing unit to the second processing unit; comprising communication means is divided into the first processing unit of the second processing unit and each unit boom, its divided communication means, the second processing Communication means for electrically connecting the knit and the first processing unit of the unit boom adjacent to the second processing unit; and communication means for electrically connecting the first processing units of adjacent unit booms to each other The communication means for electrically connecting the first processing units of the adjacent unit booms to each other from the first processing unit of the unit booms located on the crane body side of the adjacent unit booms to the tip side of the boom body. A first communication section that extends, and a second communication section that extends from the first processing unit of the unit boom located on the distal end side of the boom main body to the crane main body side of the adjacent unit booms, and the first processing of each unit boom The first communication unit connected to the unit and the second communication unit connected to the first processing unit of the unit boom adjacent to the distal end side of the boom body of the unit boom are detachable from each other. The second processing unit is connected to the first processing unit of each unit boom in order from the crane main body side to the tip end side of the boom main body, and identification information is sent to the first processing unit of the unit boom set as the destination. A control signal for output is transmitted via the communication means, and the first processing unit that is the destination of the control signal receives the control signal and transmits identification information to the second processing unit via the communication means. To do .

In this crane boom, the communication means for transmitting the identification information of each unit boom electrically connects in series the second processing unit and the first processing unit of each unit boom in order from the crane body side to the tip side of the boom body. Therefore, compared with the case where the 1st processing unit of each unit boom is connected to the 2nd processing unit by each individual communication means, the composition of a communication means can be simplified. Further, in this configuration, the second processing unit and the first processing unit of each unit boom can be easily electrically connected in series in order from the crane main body side to the tip end side of the boom main body by the communication means. Further, in this configuration, when assembling a boom body having a predetermined length as a whole by connecting the unit booms, it is easy to simply connect the corresponding first connecting parts and second connecting parts of adjacent unit booms. The first processing unit of each unit boom can be electrically connected in series in order from the crane body side to the tip end side of the boom body via the communication means. Further, in this configuration, even if the second processing unit and each first processing unit are connected in series via the communication means in order from the crane main body side to the tip end side of the boom main body, the second processing unit is connected to each unit boom. Since the identification information can be acquired individually, the second processing unit can acquire the identification information from each first processing unit without confusion. As a result, it is possible to make the second processing unit accurately recognize the identification information of the connected unit booms. Further, in this configuration, the identification information can be individually transmitted to the second processing unit by the first processing unit of each unit boom in the order in which they are arranged from the crane main body side to the tip end side of the boom main body.

  Further, in this case, each unit boom is provided on one end side in the longitudinal direction, and can be coupled only with the unit boom adjacent to the tip end side of the boom body, and the other end side in the longitudinal direction. It is preferable to have the 2nd coupling | bond part which can be couple | bonded only with the unit boom adjacent to the crane main body side. If comprised in this way, when connecting each unit boom, it can be made not to mistake the direction which connects each unit boom, Therefore The 1st communication part connected to the 1st processing unit of an adjacent unit boom, and 2nd An erroneous connection of the communication unit can be prevented.

  In the boom of the crane, the first processing unit of each unit boom preferably has a storage unit in which identification information of the unit boom provided with the first processing unit is stored. If comprised in this way, the identification information of the unit boom which a 1st processing unit should output by a memory | storage part can be hold | maintained easily.

  In this case, it is preferable that the storage unit includes a memory in which the stored content is retained even when power is not supplied and the stored content can be rewritten. If comprised in this way, the identification information memorize | stored in the memory | storage part can be hold | maintained even in the state in which power is not supplied to the 1st processing unit of each unit boom before the assembly of a boom. In addition, since the storage unit includes a rewritable memory, the identification information unique to the unit boom is stored in the storage unit according to the configuration of the unit boom in which the first processing unit including the storage unit is installed. Can be made. Thereby, since the 1st processing unit can be applied to various unit booms, the versatility of the 1st processing unit can be improved.

  In the configuration in which the first processing unit includes a storage unit, the storage unit can supply power from an external power source, transmit the stored content to the external device, and rewrite the stored content from the external device by radio waves. It is preferable that the storage element is made of a simple memory element. According to this configuration, even when power is not supplied to the first processing unit of each unit boom before the boom is assembled, power is supplied from the external power source to the storage unit, and the storage contents of the storage unit are read from the external device. And can be rewritten.

  In the boom of the crane, measuring means for measuring the external force received by each unit boom is provided in each unit boom, and the data regarding the external force measured by the measuring means is the data of the unit boom provided with the measuring means. Preferably, it is incorporated into one processing unit. If comprised in this way, the damage which each unit boom received with the external force based on the data regarding the external force which each unit boom taken in by the 1st processing unit received can be managed.

  In this case, the first processing unit of each unit boom has a storage unit in which the identification information of the unit boom provided with the first processing unit is stored, and this storage unit is measured by the measuring means. It is preferable that the number of times the external force exceeds a predetermined value set in advance is further stored. In this case, if the number of times the external force received by the unit boom stored in the storage unit of the first processing unit of each unit boom exceeds a predetermined value is examined, the history of the unit boom being damaged by the external force exceeding the predetermined value Can know. As a result, if the unit boom that is damaged by the external force beyond the limit is not used, it is possible to prevent the unit boom from being damaged due to the accumulation of damage.

  In the boom of the crane, the power supply unit that supplies power for driving the first processing unit and the second processing unit, and the first processing unit of each unit boom from the power source unit via the second processing unit are boomed from the crane body side. It is preferable to include a power supply means that is electrically connected in series to the distal end side of the main body in order and supplies power from the power supply unit to each of the first processing unit and the second processing unit. If comprised in this way, the 1st processing unit of each unit boom will be electrically connected in series in order from the crane main body side to the tip side of the boom main body from the power supply part via the 2nd processing unit by the power supply means. Therefore, unlike the case where the second processing unit and the first processing unit of each unit boom are connected to the power supply unit via individual power supply means, the number of power supply means increases as the number of unit booms increases. Can be suppressed. Thereby, it can suppress that the handling of a power supply means becomes complicated.

  In this case, the power supply means includes a first power supply unit that extends from the first processing unit of each unit boom to the distal end side of the boom body, and a second power supply that extends from the first processing unit of each unit boom to the crane body side. First processing units of adjacent unit booms are electrically connected to each other via a first power supply unit and a second power supply unit, and a first power supply unit of a predetermined unit boom and its first power supply unit It is preferable that the second power supply part of the unit boom adjacent to the tip side of the boom body of the predetermined unit boom is detachably connected to each other. If comprised in this way, when connecting each unit boom and assembling the boom main body of predetermined length as a whole, the corresponding 1st power supply part and 2nd power supply part of an adjacent unit boom will be connected, respectively. The first processing unit of each unit boom can be easily electrically connected in series in order from the crane body side to the tip side of the boom body via the power supply means.

  In the configuration including the power supply means, the communication means and the power supply means are preferably shared. With this configuration, it is not necessary to provide the communication unit and the power supply unit separately, so that the number of parts can be reduced.

  In the configuration including the power supply means, the second processing unit outputs identification information destined for the first processing unit of each unit boom in order from the crane main body side to the tip end side of the boom main body via the communication means. The first processing unit that is the destination of the control signal transmits the identification information to the second processing unit via the communication means by receiving the control signal, and at the front end side of the boom body It is preferable to perform a process of supplying power from the power supply means to the first processing unit of another unit boom adjacent to the unit boom. If comprised in this way, power will be supplied to the 1st processing unit of each unit boom in order from the crane main body side to the tip side of the boom main body, and it will drive, and the 1st processing unit of each unit boom will be identified in order. Can be output.

  In the crane boom, the first processing unit of each unit boom preferably includes a battery unit. If comprised in this way, since it can drive and drive the 1st processing unit of each unit boom from a battery part, a power supply is supplied to the 1st processing unit of each unit boom from a power supply part via a power supply means. Unlike the case of supplying the first boom, there is no need to connect the first processing unit of each unit boom with the power supply means. For this reason, the work process at the time of boom assembly can be simplified.

  In this case, the battery unit is composed of a rechargeable secondary battery, and each unit boom is preferably provided with a power generator for supplying power to charge the battery unit. If comprised in this way, the replacement | exchange work of the battery part by the battery exhaustion and the charging work of a battery part will become unnecessary, Therefore The work burden concerning such a work can be reduced.

  As described above, in the crane boom according to the present invention, the configuration of the communication means for transmitting the identification information of each unit boom can be simplified.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic view showing a configuration of a crane to which a boom according to a first embodiment of the present invention is applied, and FIG. 2 shows a structure of joint booms 11b to 11e constituting the crane boom shown in FIG. It is a figure for demonstrating. FIG. 3 is a block diagram showing a configuration of the processing unit 4 provided in each unit boom 11 of the crane shown in FIG. 1, and FIG. 4 shows a central processing unit provided in the crane main body 2 shown in FIG. It is the block diagram which showed the structure. First, with reference to FIGS. 1-4, the structure of the boom of the crane by 1st Embodiment of this invention is demonstrated.

  As shown in FIG. 1, the boom 1 of the crane according to the first embodiment has a base attached to a crane main body 2 and is operated up and down with the base as a fulcrum.

  The boom 1 includes a boom body 3, a processing unit 4 (first processing unit), a central processing unit 5 (second processing unit), and a connection unit 6.

  The boom body 3 includes a plurality of unit booms 11 including a base boom 11a, first to fourth joint booms 11b to 11e, and a tip boom 11f. The base boom 11 a is a unit boom 11 that is positioned on the most base side of the boom body 3, and is a unit boom 11 that is attached to the crane body 2. The tip boom 11 f is a unit boom 11 located on the most tip side of the boom body 3. The first to fourth joint booms 11b to 11e are unit booms 11 interposed between the base boom 11a and the tip boom 11f. The base boom 11a, the first to fourth joint booms 11b to 11e, and the tip boom 11f are connected in this order from the crane body 2 side to the tip side of the boom body 3.

  As shown in FIG. 2, each unit boom 11 has a lattice structure in which a plurality of aggregates are combined. The first to fourth joint booms 11b to 11e are box-shaped by four main members arranged at positions corresponding to the respective corners of a substantially quadrangular prism shape and a plurality of sub-materials connecting adjacent main members. It is comprised so that. And the connection pin part 12a (1st connection part) is provided in the edge part at the front end side of the boom main body 3 of each unit boom 11, On the other hand, the connection hole part 12b is provided in the edge part of the crane main body 2 side. (Second coupling portion) is provided.

  The coupling pin portion 12a of each unit boom 11 is inserted into the coupling hole portion 12b of the other unit boom 11 adjacent to the distal end side of the boom body 3 of the unit boom 11, and the coupling hole portion of each unit boom 11 is inserted. A connecting pin portion 12a of another unit boom 11 adjacent to the crane main body 2 side of the unit boom 11 is inserted into 12b. That is, the coupling pin portion 12a provided on the distal end side of the boom body 3 of each unit boom 11 is coupled only to the coupling hole portion 12b of the other unit boom 11 adjacent to the distal end side of the boom body 3 of the unit boom 11. The coupling hole 12b provided on the crane body 2 side of each unit boom 11 is coupled only with the coupling pin portion 12a of another unit boom 11 adjacent to the crane body 2 side of the unit boom 11. It is possible.

  The processing unit 4 (first processing unit) is provided for each unit boom 11. The processing unit 4 has various identification information (weight, length, width, height, manufacturer name, model, date of manufacture, compression constant, bending constant, etc.) regarding the unit boom 11 provided with the processing unit 4. Can be output.

  The central processing unit 5 is configured to communicate with the processing unit 4 of each unit boom 11, and based on the identification information of each unit boom 11 transmitted from the processing unit 4, The unit boom 11 is configured to obtain the number of connections, the connection order, and the like.

  The connecting portion 6 is a portion that electrically connects the central processing unit 5 and the processing units 4 of each unit boom 11 in series in order from the crane main body 2 side to the distal end side of the boom main body 3. The connecting portion 6 is divided for each of the central processing unit 5 and the processing unit 4 of each unit boom 11, and the divided connecting portion 6 is adjacent to the central processing unit 5 and the central processing unit 5. The processing unit 4 of 11a is electrically connected, and the processing units 4 of the adjacent unit booms 11 are electrically connected to each other.

  Specifically, the connection portion 6 includes a distal end side cable 17a extending from the central processing unit 5 or the processing unit 4 of each unit boom 11 to the distal end side of the boom body 3, and the distal end of the boom body 3 of the distal end side cable 17a. A distal end side connecting portion 16a composed of a distal end side connector 18a attached to the end on the side, a base side cable 17b extending from the processing unit 4 of each unit boom 11 to the crane body 2 side, and a crane body 2 of the base side cable 17b. It is comprised by the base side connection part 16b which consists of the base side connector 18b attached to the edge part of the side.

  As shown in FIG. 3, the distal end side cable 17a includes a distal end side communication line 21a, a distal end side power supply line 22a, and a distal end side GND (ground potential) line 23a. A side communication line 21b, a base side power supply line 22b, and a base side GND line 23b are included. In each processing unit 4, the end of the distal end side communication line 21a on the crane body 2 side and the end of the base side communication line 21b on the distal end side of the boom body 3 are electrically connected, and the distal end side power supply The end of the wire 22a on the crane body 2 side and the end of the base side power supply line 22b on the tip side of the boom body 3 are electrically connected, and the end of the tip side GND wire 23a on the crane body 2 side is electrically connected. And the end of the boom main body 3 on the base side GND line 23b are electrically connected.

  The distal end side communication line 21a and the distal end side connector 18a constitute a distal end side communication part 25a (first communication part), and the proximal side communication line 21b and the proximal side connector 18b constitute a base side communication part 25b (first communication part). 2 communication units). Further, the distal end side power supply line 22a and the distal end side connector 18a constitute a distal end side power supply part 26a (first power supply part), and the proximal side power supply line 22b and the proximal side connector 18b constitute a proximal side power supply. A supply unit 26b (second power supply unit) is configured.

  The distal connector 18a connected to the central processing unit 5 and the proximal connector 18b connected to the processing unit 4 of the base boom 11a are detachably connected to each other, and the distal connector connected to the processing unit 4 of each adjacent unit boom 11 18a and the base side connector 18b are detachably connected to each other. By connecting each connector, a distal end side connecting portion 16a (front end side communication portion 25a, distal end side power supply portion 26a) connected to the central processing unit 5 and a base side connecting portion 16b (base side) connected to the processing unit 4 of the base boom 11a. The communication unit 25b and the base side power supply unit 26b are detachably connected to each other, and the tip side connection unit 16a (tip side communication unit 25a, tip side power supply unit) connected to the processing unit 4 of each adjacent unit boom 11 is connected. 26a) and the base side connection part 16b (base side communication part 25b, base side power supply part 26b) are detachably connected to each other.

  Then, the central processing unit 5 and the processing unit 4 of the base boom 11a, or the processing units 4 of the adjacent unit booms 11 are electrically connected in series to each other via the front end side communication unit 25a and the base side communication unit 25b. The communication unit 25 (communication means) according to the first embodiment is configured by the front end side communication unit 25a and the base side communication unit 25b disposed between the central processing unit 5 and each processing unit 4. ) Is configured. The communication unit 25 transmits the identification information output from the processing unit 4 of each unit boom 11 to the central processing unit 5, or the control signal output from the central processing unit 5 is transmitted to the processing unit of each unit boom 11. 4 is transmitted.

  Further, the processing unit 4 of the central processing unit 5 and the base boom 11a, or the processing units 4 of the adjacent unit booms 11 are electrically connected to each other via the front end side power supply unit 26a and the base side power supply unit 26b. Connected in series. In addition, the crane body 2 is provided with a central processing unit 5 and a power supply unit 27 (see FIG. 4) for supplying power to drive each processing unit 4. The power supply line 28 and the power supply side GND line 29 are electrically connected. The power supply unit according to the first embodiment is constituted by the front-end-side power supply unit 26a, the base-side power supply unit 26b, and the power-side power supply line 28 disposed between the central processing unit 5 and each processing unit 4. 26 (power supply means) is configured. The power supply unit 26 supplies power from the power supply unit 27 to the processing unit 4 of each unit boom 11 from the power supply unit 27 via the central processing unit 5.

  In the processing unit 4 of each unit boom 11, the distal end side power supply line 22 a and the base side power supply line 22 b are connected via a relay 30. When the relay 30 is turned on, the tip-side power supply line 22a and the base-side power supply line 22b are electrically connected, and when the relay 30 is turned off, the tip-side power supply line 22a and the base-side power supply line 22b are connected. It has a function of electrically disconnecting. When the relay 30 is turned on, power is supplied from the base side power supply line 22b to the tip side power supply line 22a via the relay 30, and when the relay 30 is off, the base side power supply is supplied. Power is not supplied from the line 22b to the distal end side power supply line 22a. The ON / OFF of the relay 30 is controlled by a relay control signal from a processing unit 32 (described later) provided in each processing unit 4.

  Further, a GND potential (ground potential) is supplied from the power supply unit 27 to the central processing unit 5 through the power supply side GND line 29, and further, each distal end side GND line 23a, each distal end side connector 18a, and each base side connector 18b. In addition, a GND potential (ground potential) is supplied to the processing unit 4 of each unit boom 11 through each base side GND line 23b.

  Next, the configuration in the processing unit 4 and the configuration in the central processing unit 5 of each unit boom 11 will be described.

  As illustrated in FIG. 3, the processing unit 4 of each unit boom 11 includes a storage unit 31, a processing unit 32, and a communication processing unit 33 in addition to the relay 30 described above. The storage unit 31 is electrically connected to the processing unit 32, and the processing unit 32 is electrically connected to the distal end side communication line 21 a and the base side communication line 21 b via the communication processing unit 33.

  The storage unit 31 is a part in which identification information of the unit boom 11 provided with the processing unit 4 including the storage unit 31 is stored, and the stored content is retained even when power is not supplied. Is composed of a storage element such as a rewritable flash memory. The identification information stored in the storage unit 31 includes the characteristics of the unit boom 11 such as the weight, length, width, height, manufacturer name, model, date of manufacture, and compression constant and bending constant of the unit boom 11. There are parameters about.

  The processing unit 32 transmits the identification information stored in the storage unit 31 to the central processing unit 5 in response to the control signal from the central processing unit 5 and outputs a relay control signal to the relay 30 to turn on the relay 30. Various processes such as a process to turn on are performed.

  The communication processing unit 33 captures various control signals transmitted via the communication unit 25 and sends them to the processing unit 32, or conversely, the identification information read from the storage unit 31 by the processing unit 32 via the communication unit 25. Communication processing such as transmission to the processing unit 5 is performed. Then, the processing unit 32 and the communication processing unit 33 are driven by being supplied with power through the power supply unit 26, and can perform the above-described processes.

  As illustrated in FIG. 4, the central processing unit 5 includes a storage unit 41, a processing unit 42, and a communication processing unit 43. The storage unit 41 is electrically connected to the processing unit 42, and the processing unit 42 is electrically connected to the distal communication line 21 a via the communication processing unit 43.

  The storage unit 41 stores identification information transmitted from the processing unit 4 of each unit boom 11 and other various information. The processing unit 42 performs various processes such as outputting a control signal for causing the processing unit 4 of each unit boom 11 to output identification information. The communication processing unit 43 takes in the identification information transmitted from the processing unit 4 of each unit boom 11 via the communication unit 25, and receives the control signal output from the processing unit 42 via the communication unit 25. Communication processing such as transmission to the processing unit 4 is performed.

  5 and 6 are flowcharts showing the processing flow in the processing unit 4 of each unit boom 11 according to the first embodiment, and FIG. 7 is a flowchart showing the processing flow in the central processing unit 5. Next, with reference to FIGS. 1-7, the process at the time of calculating | requiring the number of the unit booms 11 which comprise the boom main body 3 of the crane by 1st Embodiment of this invention, and the boom body 3 total length is demonstrated.

  First, when the power is turned on, power is supplied from the power supply unit 27 to the central processing unit 5 through the power supply side power supply line 28 and further to the processing unit 4 of the base boom 11a through the power supply unit 26. Power is supplied. Thereby, the central processing unit 5 and the processing unit 4 of the base boom 11a are driven. At this time, power is not supplied to the processing units 4 of the unit booms 11 other than the base boom 11a, and those processing units 4 are not driven.

  Then, initialization processing is performed in the processing unit 4 of the driven base boom 11a (step S1 in FIG. 5), and initialization processing is performed in the central processing unit 5 (step S51 in FIG. 7). Specifically, in the processing unit 4 of the base boom 11a, processing for setting the unit boom number to 0 is performed by the processing unit 32, and in the central processing unit 5, the number of unit booms is set to 1 by the processing unit 42. Processing to set is performed.

  Next, the central processing unit 5 sends a command (control signal) for setting the unit boom number = 1 to the unit boom number with the processing unit 4 of the unit boom 11 having the unit boom number = 0 as the destination via the distal communication line. Transmit (step S52 in FIG. 7).

  At this time, only the processing unit 4 of the base boom 11a that is only driven among the processing units 4 of each unit boom 11 can receive the command. Then, in the processing unit 32 of the processing unit 4 of the base boom 11a capable of receiving the command, it is determined whether or not the command is received (step S2 in FIG. 5). If the processing unit 32 determines that no command is received, the determination of whether or not a command is received in step S2 is repeated. If it is determined that a command is received, the destination boom of the command is determined. It is determined whether or not the number is 0 (step S3 in FIG. 5).

  When the processing unit 32 determines that the destination boom number of the received command is not 0, the process of step S2 in FIG. 5 is performed again, while the destination boom number of the received command is 0. If it is determined, the processing unit 32 interprets the command (step S4 in FIG. 5).

  And the process which sets the said number of unit booms (= 1) as a unit boom number according to the command is performed. That is, in the processing unit 4 of the base boom 11a, the processing unit 32 performs processing for storing the unit boom number = 1 in the storage unit 31 (step S5 in FIG. 5). At this time, the processing unit 32 of the processing unit 4 of the base boom 11a simultaneously outputs a relay control signal to the relay 30 in the processing unit 4 to turn on the relay 30 (step S6 in FIG. 5). When the relay 30 is turned on, power is supplied from the base-side power supply line 22b connected to the processing unit 4 of the base boom 11a via the relay 30 to the tip-side power supply line 22a, and further, the processing unit of the base boom 11a. 4 and the processing unit 4 of the first joint boom 11b are supplied with power through the power supply unit 26 connecting the processing units 4 of the first joint boom 11b. Thereby, the processing unit 4 of the first joint boom 11b is driven.

  Next, the processing unit 32 of the processing unit 4 of the base boom 11a returns the model of the base boom 11a stored in the storage unit 31 in the processing unit 4 to the central processing unit 5 via the communication unit 25 ( Step S7 in FIG.

  On the other hand, in the central processing unit 5, after transmitting the command, the processing unit 42 determines whether or not there is a response from the processing unit 4 of the unit boom 11 to the command, that is, whether or not there is a reply of the above type (see FIG. 7 step S53). If it is determined that there is a response (type reply) from the processing unit 4, the processing unit 42 performs a process of increasing the number of unit booms by 1 (step S54 in FIG. 7), and then the processes in steps S52 and S53. Is repeated.

  Accordingly, in the processing unit 4 of each unit boom 11 from the first joint boom 11b to the tip of the boom body 3, the processing unit 4 of the unit boom 11 to be processed is moved from the processing unit 4 of the base boom 11a to the boom. The processes similar to steps S2 to S7 in FIG. 5 described above are sequentially performed until the processing unit 4 of the front end boom 11f is shifted to the front end side of the main body 3 one by one. In this way, the unit boom number is set in order from 1 to the processing unit 4 of each unit boom 11 from the crane body 2 side to the distal end side of the boom body 3, and the number of unit booms is set to the base boom in the central processing unit 5. The number of unit booms 11 from 11a to the tip boom 11f is added.

  On the other hand, if the processing unit 42 of the central processing unit 5 determines that there is no response (type reply) from the processing unit 4, whether or not the response time of the processing unit 4 of the unit boom 11 is timed out by the processing unit 42. Is determined (step S55 in FIG. 7). The unit boom 11 does not exist after the tip boom 11f, and the response from the processing unit 4 is not returned to the central processing unit 5 after the response from the processing unit 4 of the tip boom 11f. Response time timeout occurs.

  If the processing unit 42 of the central processing unit 5 determines that the response time from the processing unit 4 is not timed out, the process of step S53 is performed again, while the response time from the processing unit 4 is timed out. If it is determined, it is determined whether or not the type returned from the processing unit 4 of the unit boom 11 that responded last is the same as the type of the tip boom 11f (step S56 in FIG. 7). The type of the tip boom 11f is stored in advance in the storage unit 41 of the central processing unit 5, and is returned from the stored type of the tip boom 11f and the processing unit 4 of the unit boom 11 that responded last. The models are compared by the processing unit 42 to determine whether or not they are equal.

  When it is determined that the type returned from the processing unit 4 of the unit boom 11 that responded last is not equal to the type of the tip boom 11f, an alarm is output to notify that an abnormality has occurred in the series of processes. An abnormal process such as this is performed by the processing unit 42 of the central processing unit 5 (step S57 in FIG. 7), and then a series of processes ends. On the other hand, when it is determined that the type returned from the processing unit 4 of the unit boom 11 that has responded last is the same as the type of the tip boom 11f, the processing unit 42 stores it in the storage unit 41 in the central processing unit 5. Processing for storing the number of unit booms at the time (= the number of unit booms 11) is performed (step S58 in FIG. 7). Thereby, the number of unit booms 11 constituting the boom body 3 is obtained.

  Then, the process which calculates | requires the full length of the boom main body 3 is performed. After the process of step S58, the destination boom number to which the command is transmitted is initialized to 1 by the processing unit 42 of the central processing unit 5, and the data representing the total length of the boom body 3 stored in the storage unit 41 is stored. It is initialized to 0 (step S59 in FIG. 7).

  Next, a command for inquiring the length of the unit boom 11 with the destination boom number = 1 is transmitted from the central processing unit 5 via the communication unit 25 (step S60 in FIG. 7).

  At this time, the processing unit 32 of the processing unit 4 of each unit boom 11 determines whether or not a command is received (step S11 in FIG. 6). When the processing unit 32 determines that the command is not received, the determination of whether or not the command is received is repeatedly performed. On the other hand, when it is determined that the command is received, the unit boom number of the command is received. It is determined whether or not the command is addressed, that is, whether or not the destination boom number of the command is equal to its unit boom number (step S12 in FIG. 6).

  When the processing unit 32 of the processing unit 4 of the unit boom 11 determines that the received command is not addressed to its own unit boom number, the process of step S11 is performed again, while the received command is If it is determined that it is addressed to its own unit boom number, the processing unit 32 interprets the command (step S13 in FIG. 6). In this case, since the destination boom number of the command is 1, the command is interpreted by the processing unit 4 of the base boom 11a in which the unit boom number is set to 1.

  In the processing unit 4 of the base boom 11a, the length of the base boom 11a stored in the storage unit 31 is read by the processing unit 32 (step S14 in FIG. 6), and the length is transmitted via the communication unit 25. A reply is sent to the central processing unit 5 (step S15 in FIG. 6).

  On the other hand, in the central processing unit 5, after the transmission of the command in step S60, the processing unit 42 determines whether or not there is a response from the processing unit 4 of the unit boom 11 to the command, that is, whether or not the length of the unit boom 11 is returned. Determination is made (step S61 in FIG. 7). When it is determined that there is no response (reply of length) from the processing unit 4, the processing unit 42 determines whether or not the response time of the processing unit 4 has timed out (step S 62 in FIG. 7).

  When the processing unit 42 of the central processing unit 5 determines that the response time from the processing unit 4 is not timed out, the process of step S61 is performed again, while the response time from the processing unit 4 is timed out. If it is determined, an abnormality process such as outputting an alarm notifying that an abnormality has occurred in a series of processes for determining the overall length of the boom body 3 is performed by the processing unit 42 of the central processing unit 5 (step of FIG. 7). After that, this process is finished.

  In step S61, if the processing unit 42 of the central processing unit 5 determines that there is a response (return of length) from the processing unit 4, the unit boom 11 returned to the data representing the entire length of the boom body 3 is returned. Processing for adding the length is performed (step S64 in FIG. 7). Next, the processing unit 42 of the central processing unit 5 performs a process of adding 1 to the destination boom number to which the command is transmitted (step S65 in FIG. 7), and then the destination boom number is stored in the storage unit 41 in step S58. It is determined whether or not the number of unit booms 11 constituting the stored boom body 3 has been exceeded (step S66 in FIG. 7).

  When it is determined that the destination boom number does not exceed the number of unit booms 11 constituting the boom body 3, the central processing unit 5 repeatedly performs the processing after step S <b> 60 and each unit boom 11. In the processing unit 4, the processes in steps S11 to S15 are repeated. Thus, the processing unit 4 of the unit boom 11 to be processed is shifted one by one from the processing unit 4 of the base boom 11a toward the distal end side of the boom body 3, and the length of each unit boom 11 is acquired by the central processing unit 5. At the same time, the acquired length of each unit boom 11 is added to data representing the entire length of the boom body 3.

  On the other hand, if it is determined in step S66 that the destination boom number has exceeded the number of unit booms 11 constituting the boom body 3, data representing the total length of the boom body 3 at that time is stored in the central processing unit 5. A series of processes for determining the overall length of the boom body 3 is completed after being stored in the storage unit 41 (step S67 in FIG. 7).

  In this process, the total length of the boom body 3 is obtained, but other information can be obtained by the same process. For example, as shown in FIG. 6, after the processing of step S13 by the processing unit 4 of the unit boom 11, the weight of the unit boom 11 stored in the storage unit 31 is read by the processing unit 32 in the processing unit 4 (FIG. 6). In step S24), the read weight of the unit boom 11 is returned to the central processing unit 5 (step S25 in FIG. 6), so that the processing unit 42 of the central processing unit 5 adds the weight of each unit boom 11. Thus, the total weight of the boom body 3 can be obtained.

  Further, as shown in FIG. 6, after the processing of step S13 by the processing unit 4 of the unit boom 11, the processing unit 32 of the processing unit 4 confirms whether the operation of the processing unit 4 is normal (FIG. 6). Step S34) is performed, and then a signal indicating that the operation of the processing unit 4 is normal is returned to the central processing unit 5, whereby the operation of the processing unit 4 of each unit boom 11 is normal. It is also possible to check whether or not.

  As described above, in the first embodiment, the communication unit 25 that transmits the identification information of each unit boom 11 moves the central processing unit 5 and the processing unit 4 of each unit boom 11 from the crane body 2 side to the tip side of the boom body 3. As a result, the configuration of the communication unit 25 can be simplified as compared with the case where the processing units 4 of each unit boom 11 are connected to the central processing unit 5 by individual communication units. .

  In the first embodiment, the front end side communication unit 25a connected to the processing unit 4 of the predetermined unit boom 11 and the processing unit 4 of the unit boom 11 adjacent to the front end side of the boom body 3 of the predetermined unit boom 11 are connected. Since the base side communication unit 25b to be connected is detachably connected to each other by the distal end side connector 18a and the base side connector 18b, when assembling the boom body 3 of a predetermined length as a whole by connecting the unit booms 11, The processing unit 4 of each unit boom 11 can be easily moved from the crane body 2 side to the tip side of the boom body 3 simply by connecting the corresponding distal side communication unit 25a and the base side communication unit 25b of the adjacent unit booms 11 respectively. In series, they can be electrically connected in series.

  Moreover, in 1st Embodiment, each unit boom 11 is provided in the one end side of the longitudinal direction, The coupling pin part 12a which can be couple | bonded only with the coupling hole part 12b of the other unit boom 11, and its longitudinal direction Since it has the coupling hole part 12b which is provided in the other end side and can be coupled only with the coupling pin part 12a of the other unit boom 11, the direction in which the unit booms 11 are coupled when the unit booms 11 are coupled. You can avoid mistakes. Thereby, the misconnection of the front end side communication part 25a connected to the processing unit 4 of the adjacent unit boom 11 and the base part side communication part 25b can be prevented.

  Further, in the first embodiment, the central processing unit 5 transmits a command in which the processing unit 4 of each unit boom 11 is destined in order from the crane body 2 side to the tip side of the boom body 3, and the destination of the command is By receiving the command, the processing unit 4 transmits identification information (length, weight, etc. of the unit boom 11) to the central processing unit 5, so that the processing unit 4 is arranged from the crane body 2 side to the tip side of the boom body 3. The identification information can be individually transmitted to the central processing unit 5 by the processing unit 4 of each unit boom 11 in order. Thus, even if the central processing unit 5 and the processing unit 4 of each unit boom 11 are sequentially connected in series from the crane main body 2 side to the tip end side of the boom main body 3 via the communication unit 25, the central processing unit 5 Since the identification information of the unit boom 11 can be acquired individually according to the order, the central processing unit 5 can acquire the identification information from each processing unit 4 without confusion. As a result, it is possible to cause the central processing unit 5 to accurately recognize the identification information of the unit booms 11 that are connected.

  In the first embodiment, the storage unit 31 provided in the processing unit 4 of each unit boom 11 includes a flash memory or the like in which the stored content is retained even when power is not supplied and the stored content can be rewritten. Therefore, the identification information stored in the storage unit 31 can be held even when power is not supplied to the processing unit 4 of each unit boom 11 before the boom is assembled. Moreover, since the memory | storage part 31 consists of memory which can rewrite the memory | storage content, according to the structure of the unit boom 11 in which the processing unit 4 containing the memory | storage part 31 is installed, the identification information intrinsic | native to the unit boom 11 is memorize | stored. It can be stored in the unit 31. Thereby, since the processing unit 4 can be applied to various unit booms 11, the versatility of the processing unit 4 can be improved.

  Moreover, in 1st Embodiment, the power supply part 26 electrically connects the processing unit 4 of each unit boom 11 of the front end side of the boom main body 3 from the crane main body 2 side via the central processing unit 5 from the power supply part 27 in order. Unlike the case where the central processing unit 5 and the processing unit 4 of each unit boom 11 are connected to the power supply unit 27 via individual power supply units, the power supply accompanying the increase of the unit booms 11 is connected in series. Since the increase in the number of parts can be suppressed, the handling of the power supply part can be suppressed from becoming complicated.

  In the first embodiment, the tip-side power supply unit 26a of the predetermined unit boom 11 and the base-side power supply unit 26b of the unit boom 11 adjacent to the tip side of the boom body 3 of the predetermined unit boom 11 are mutually connected. Since they are detachably connected, when the unit booms 11 are connected to assemble the boom main body 3 having a predetermined length as a whole, the corresponding distal end side power supply units 26a and base side power supply units of the adjacent unit booms 11 are combined. The processing unit 4 of each unit boom 11 can be easily electrically connected in series in order from the crane main body 2 side to the tip end side of the boom main body 3 via the power supply unit 26 by simply connecting each unit 26b.

  Further, in the first embodiment, the central processing unit 5 outputs identification information having the processing unit 4 of each unit boom 11 as a destination in order from the crane body 2 side to the tip side of the boom body 3 via the communication unit 25. The processing unit 4 that is the destination of the command transmits the identification information to the central processing unit 5 via the communication unit 25 by receiving the command, and at the front end side of the boom body 3 Since the power supply unit 26 supplies power to the processing unit 4 of the unit boom 11 adjacent to the unit boom 11, the power is sequentially supplied to the processing unit 4 of each unit boom 11 from the crane body 2 side to the tip side of the boom body 3. It can supply and drive and can make the processing unit 4 of each unit boom 11 in the state which can output identification information in order.

(Second Embodiment)
FIG. 8 is a view for explaining the structure of the joint booms 11b to 11e constituting the boom of the crane according to the second embodiment of the present invention, and FIG. 9 is each unit of the crane according to the second embodiment of the present invention. 3 is a block diagram showing a configuration of a processing unit 4 provided in the boom 11. FIG. Next, with reference to FIG. 8 and FIG. 9, the structure of the boom of the crane by 2nd Embodiment of this invention is demonstrated.

  In the crane boom according to the second embodiment, as shown in FIG. 8, unlike the first embodiment, each unit boom 11 is provided with an acceleration sensor 50 (measuring means). This acceleration sensor 50 has a function of detecting the acceleration of each unit boom 11 and measuring the value of impact force received by each unit boom 11 from the detected acceleration. The acceleration sensor 50 is electrically connected to the processing unit 4 of the unit boom 11 by a sensor cable 51. In the second embodiment, as shown in FIG. 9, a sensor interface (I / F) unit 52 is provided in the processing unit 4 of the unit boom 11, and the sensor cable 51 connected to the acceleration sensor 50 is It is electrically connected to the processing unit 32 via the sensor interface unit 52. As a result, the detection value of the acceleration sensor 50 is taken into the processing unit 4 by the processing unit 32 via the sensor cable 51. At this time, the processing unit 32 confirms the detection value of the acceleration sensor 50 via the sensor interface unit 52 and the sensor cable 51 and performs processing for storing the confirmed detection value in the storage unit 31. . In addition, the confirmation process of the detection value of the acceleration sensor 50 by this process part 32 is performed with a fixed period.

  In the second embodiment, when the detected value of the acceleration sensor 50 (= impact force received by the unit boom 11) confirmed by the processing unit 32 exceeds a predetermined value, the predetermined value is set. The exceeded number is counted and the number is stored in the storage unit 31. The predetermined value is, for example, for setting an allowable range of damage given to the unit boom 11 by impact force.

  Further, in the sensor interface unit 52, after the processing unit 32 confirms the detection value of the acceleration sensor 50, the maximum detection that the acceleration sensor 50 indicates until the next detection value of the acceleration sensor 50 is confirmed again. A circuit for holding a value is configured. Regarding the detection value of the acceleration sensor 50, that is, the impact force received by the unit boom 11, it is important to manage the maximum value, and if there is no circuit as described above, the processing unit 32 may fail to check the maximum value. In order to eliminate this, it is necessary to check the detection value of the acceleration sensor 50 in a very short cycle. However, since the circuit is configured in the sensor interface unit 52, the processing value of the processing unit 32 is retained in the circuit even if it is difficult to confirm the detection value in a very short cycle. By confirming the detection value, the maximum detection value of the acceleration sensor 50 (maximum impact force received by the unit boom 11) can be confirmed without omission.

  In the second embodiment, the communication unit 25 (communication unit) and the power supply unit 26 (power supply unit) (see FIG. 2) according to the first embodiment are shared. That is, as shown in FIG. 9, the front end side communication line 21a and the front end side power supply line 22a (see FIG. 3) according to the first embodiment are shared by a single front end side common line 53a. The base side communication line 21b and the base side power supply line 22b (see FIG. 3) according to the first embodiment are shared by one base side common line 53b. The power from the power supply unit 27 is supplied to the processing unit 4 of each unit boom 11 through the front end side common line 53a and the base side common line 53b, and identification information and various control signals (commands) of each unit boom 11 are supplied. Communication is performed.

  A low-pass filter 54 made of a coil or the like and a high-pass filter 55 are connected to the base side common line 53b. The communication processing unit 33 is electrically connected to the base side common line 53b via the high-pass filter 55. In the second embodiment, since the power supply line and the communication line are shared, the power source that is a DC component (DC component) and the AC component (AC component) are used in the distal end side common line 53a and the base side common line 53b. Various control signals (commands) that are components are transmitted in a superimposed manner. Therefore, only the power that is a DC component is extracted from the base-side common line 53b via the low-pass filter 54 and supplied to the processing unit 4, while the AC component is supplied from the base-side common line 53b via the high-pass filter 55. Only various control signals are extracted and supplied to the communication processing unit 33.

  Other configurations of the crane boom according to the second embodiment are the same as those of the crane boom according to the first embodiment.

  As described above, in the second embodiment, the acceleration sensor 50 for measuring the impact force received by each unit boom 11 is provided in each unit boom 11, and the data relating to the impact force measured by the acceleration sensor 50 is as follows. Since each unit boom 11 is stored in the storage unit 31 of the processing unit 4, each unit boom 11 is impacted based on the data regarding the impact force received by each unit boom 11 stored in the storage unit 31 of the processing unit 4. The damage received by force can be managed.

  In the second embodiment, the number of times the impact force measured by the acceleration sensor 50 exceeds a predetermined value is stored in the storage unit 31 of the processing unit 4 of each unit boom 11. Therefore, by checking the number of times the impact force received by the unit boom 11 stored in the storage unit 31 of the processing unit 4 exceeds a predetermined value, the unit boom 11 is damaged by the impact force exceeding the predetermined value. You can know the history. As a result, if the unit boom 11 that is damaged more than the limit by the impact force is not used, it is possible to prevent the unit boom 11 from being damaged due to the accumulation of damage.

  In the second embodiment, since the communication unit and the power supply unit are shared by the front end side common line 53a and the base side common line 53b, it is not necessary to separately provide the communication unit and the power supply unit. The number of parts can be reduced.

  The effects of the second embodiment other than those described above are the same as the effects of the first embodiment.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

  For example, in the second embodiment, each unit boom 11 is provided with the acceleration sensor 50 for measuring the impact force. However, the present invention is not limited thereto, and various unit booms 11 receive instead of the acceleration sensor 50. Various measuring means for measuring the external force may be provided. For example, a strain gauge or the like may be provided in each unit boom 11 as a measuring means for measuring the bending moment received by the unit boom 11. In this case, a means for taking in the pressure signal detected by the strain gauge into the processing unit 4 of each unit boom 11 is provided, and the pressure signal, which is an analog signal, is converted into a digital signal to process the processing unit 32 of the processing unit 4. Is provided with an A / D converter for enabling processing.

  Further, in the first embodiment, the storage unit 31 is configured by a storage element that retains stored contents and can rewrite the stored contents without supplying power, such as a flash memory. Not limited to this, the storage unit 31 may be configured by a storage element capable of supplying power from an external power source by radio waves, transmitting stored content to the external device, and rewriting stored content from the external device. . For example, the storage unit 31 may be configured by an RF-ID (Radio Frequency Identification) tag which is an IC chip (IC tag) capable of wireless communication with the outside. In this case, even when power is not supplied to the processing unit 4 of each unit boom 11 before assembling the boom, power is supplied from the external power supply to the storage unit 31 by radio waves, and the stored contents of the storage unit 31 from the external device. Can be read and rewritten.

  Moreover, you may provide the battery part which supplies the power supply which drives the process unit 4 to the process unit 4 of each unit boom 11, respectively. If comprised in this way, since the processing unit 4 of each unit boom 11 can be driven by supplying power from the battery unit, the processing unit 4 of each unit boom 11 from the power supply unit 27 via the power supply unit 26. Unlike the case of supplying power to the processing unit 4, it is not necessary to connect the processing unit 4 of each unit boom 11 by the power supply unit 26. For this reason, the work process at the time of boom assembly can be simplified.

  In this case, the battery unit may be constituted by a rechargeable secondary battery, and a power generator for supplying power to the unit boom 11 to charge the battery unit may be provided. As this power generation device, a photovoltaic device such as a solar cell or a wind power generation device is used. If comprised in this way, it will become possible to secure a power supply by each unit boom 11, and since the replacement | exchange work of the battery part by the time of a battery exhaustion and the charging work of a battery part become unnecessary, the work burden concerning such a work | work will be carried out. Can be reduced.

  In the first embodiment, the identification information is individually transmitted from the processing unit 4 of each unit boom 11 to the central processing unit 5 in the order in which the crane main body 2 side is aligned with the distal end side of the boom main body 3. However, the identification information may be transmitted in various orders other than the above as long as the identification information is individually transmitted from the processing unit 4 of each unit boom 11 to the central processing unit 5.

It is the schematic which showed the structure of the crane which applies the boom by 1st Embodiment of this invention. It is a figure for demonstrating the structure of the joint boom which comprises the boom of the crane shown in FIG. It is the block diagram which showed the structure of the processing unit provided in each unit boom of the crane shown in FIG. It is the block diagram which showed the structure of the central processing unit provided in the crane main body shown in FIG. It is the flowchart which showed the processing flow in the processing unit of each unit boom by 1st Embodiment of this invention. The flowchart which showed the processing flow at the time of calculating | requiring the operation | movement of the processing unit of each unit boom, when calculating | requiring the full length of the boom main body and the total weight of a boom main body in the processing unit of each unit boom by 1st Embodiment of this invention. It is. It is the flowchart which showed the processing flow in the central processing unit by 1st Embodiment of this invention. It is a figure for demonstrating the structure of the joint boom which comprises the boom of the crane by 2nd Embodiment of this invention. It is the block diagram which showed the structure of the processing unit provided in each unit boom of the crane by 2nd Embodiment of this invention.

Explanation of symbols

2 Crane body 3 Boom body 4 Processing unit (first processing unit)
5 Central processing unit (second processing unit)
11 Unit boom 12a Connecting pin part (first connecting part)
12b Bonding hole (second coupling part)
25 Communication part (communication means)
25a Front side communication unit (first communication unit)
25b Base side communication unit (second communication unit)
26 Power supply section (power supply means)
26a Front end side power supply unit (first power supply unit)
26b Base side power supply unit (second power supply unit)
27 Power supply unit 31 Storage unit 50 Acceleration sensor (measuring means)

Claims (13)

A plurality of unit booms constituting a boom body of a predetermined length as a whole by being sequentially connected from the crane body side,
A first processing unit which is provided for each unit boom and outputs identification information of the unit boom provided ;
A second processing unit provided on the crane body side of the boom body and communicating with each first processing unit;
The second processing unit and the first processing unit of each unit boom are electrically connected in series from the crane body side to the tip side of the boom body, and the identification information output from the first processing unit is Communication means for transmitting to the second processing unit ,
The communication means is divided for each of the second processing unit and the first processing unit of each unit boom, and the divided communication means is adjacent to the second processing unit and the second processing unit. Communication means for electrically connecting the first processing unit of the unit boom, and communication means for electrically connecting the first processing units of adjacent unit booms to each other,
The communication means for electrically connecting the first processing units of the adjacent unit booms to each other from the first processing unit of the unit booms located on the crane body side of the adjacent unit booms to the distal end side of the boom body. A first communication unit that extends, and a second communication unit that extends from the first processing unit of the unit boom located on the distal end side of the boom body among the adjacent unit booms to the crane body side,
The first communication unit connected to the first processing unit of each unit boom and the second communication unit connected to the first processing unit of the unit boom adjacent to the distal end side of the boom body of the unit boom can be attached to and detached from each other. Connected to
The second processing unit has the first processing unit of each unit boom as a destination in order from the crane main body side to the tip side of the boom main body, and the identification information is sent to the first processing unit of the unit boom as the destination. A control signal for output is transmitted via the communication means, and the first processing unit that is the destination of the control signal receives the control signal, and thereby transmits the control signal to the second processing unit via the communication means. Crane boom that transmits identification information . Each unit boom is provided on one end side in the longitudinal direction, provided on the other end side in the longitudinal direction, a first coupling portion that can be coupled only with the unit boom adjacent to the tip end side of the boom body, The crane boom according to claim 1 , further comprising a second connecting portion that can be connected only to a unit boom adjacent to the crane main body. The crane boom according to claim 1 or 2 , wherein the first processing unit of each unit boom has a storage unit in which identification information of a unit boom provided with the first processing unit is stored. The crane boom according to claim 3 , wherein the storage unit includes a memory in which stored contents are retained even when power is not supplied and the stored contents can be rewritten. Wherein the storage unit, via radio waves, power supply from the external power supply, consists of a storage element capable of rewriting the stored contents of the transmission of the contents to an external device and an external device, according to claim 3 Crane boom. Measuring means for measuring the external force received by each unit boom is provided for each unit boom, respectively.
The crane boom according to any one of claims 1 to 5 , wherein data relating to the external force measured by the measuring means is taken into the first processing unit of a unit boom provided with the measuring means. The first processing unit of each unit boom has a storage unit for storing identification information of the unit boom provided with the first processing unit,
The crane boom according to claim 6 , wherein the storage unit further stores the number of times that the external force measured by the measuring unit exceeds a predetermined value set in advance. A power supply for supplying power to drive the first processing unit and the second processing unit;
The first processing unit of each unit boom is electrically connected in series from the crane main body side to the tip end side of the boom main body from the power supply unit via the second processing unit, and each first processing unit and The crane boom according to any one of claims 1 to 7 , further comprising power supply means for supplying power from the power supply unit to the second processing unit. The power supply means includes a first power supply section that extends from the first processing unit of each unit boom to the distal end side of the boom body, and a second power source that extends from the first processing unit of each unit boom to the crane body side. Including a supply section,
The first processing units of adjacent unit booms are electrically connected to each other via the first power supply unit and the second power supply unit, and the first power supply unit of the predetermined unit boom and the predetermined power supply unit thereof. The crane boom according to claim 8 , wherein the unit boom is detachably connected to the second power supply unit of the unit boom adjacent to the tip side of the boom body of the unit boom. The crane boom according to claim 8 or 9 , wherein the communication means and the power supply means are shared. The second processing unit outputs a control signal for outputting the identification information addressed to the first processing unit of each unit boom in order from the crane main body side to the tip end side of the boom main body via the communication means. The first processing unit that is the destination of the control signal transmits the identification information to the second processing unit via the communication means by receiving the control signal, and the front end side of the boom body The crane boom according to any one of claims 8 to 10 , wherein a process of supplying power from the power supply means to a first processing unit of another unit boom adjacent to the unit boom is performed. The crane boom according to any one of claims 1 to 7 , wherein the first processing unit of each unit boom includes a battery part. The battery unit is composed of a rechargeable secondary battery,
The crane boom according to claim 12 , wherein each unit boom is provided with a power generation device for supplying power to charge the battery unit.

Images