WO2011027381A1 - Mobile radiation imaging device - Google Patents

Mobile radiation imaging device Download PDF

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Publication number
WO2011027381A1
WO2011027381A1 PCT/JP2009/004296 JP2009004296W WO2011027381A1 WO 2011027381 A1 WO2011027381 A1 WO 2011027381A1 JP 2009004296 W JP2009004296 W JP 2009004296W WO 2011027381 A1 WO2011027381 A1 WO 2011027381A1
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WO
WIPO (PCT)
Prior art keywords
power
mobile
power generation
relay
battery
Prior art date
Application number
PCT/JP2009/004296
Other languages
French (fr)
Japanese (ja)
Inventor
宮田博
Original Assignee
株式会社島津製作所
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Application filed by 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to PCT/JP2009/004296 priority Critical patent/WO2011027381A1/en
Publication of WO2011027381A1 publication Critical patent/WO2011027381A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4405—Constructional features of apparatus for radiation diagnosis the apparatus being movable or portable, e.g. handheld or mounted on a trolley
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0204—Operational features of power management
    • A61B2560/0214—Operational features of power management of power generation or supply

Definitions

  • the present invention relates to a mobile radiography apparatus in which a movable carriage is equipped with a radiographic equipment such as a radiation source and a power supply means for supplying power to the radiation source, and in particular, radiation when irradiating radiation.
  • the present invention relates to a technique for improving a power supply source of a source.
  • a conventional mobile radiography apparatus includes a movable carriage 51, radiographic equipment such as a radiation source 52 and a battery 55 for irradiating a subject, and electric power for rotating a wheel.
  • a radiation source driving power source (capacitor) 53 that supplies electric power necessary for radiation imaging is mounted in addition to the cart traveling equipment such as a motor (see, for example, Patent Document 1).
  • a cassette storage box for storing a cassette (not shown) loaded with a radiation imaging storage medium such as a film is mounted on the rear portion of the carriage 51.
  • a flat panel radiation detector (not shown) for detecting a transmitted radiation image of the subject may be mounted on the carriage 51 in place of or in addition to the cassette.
  • the radiographer DR holds the operation handle 57 by hand and steers the cart 51 with the patient (patient) subject to radiography (imaging location). )
  • the unexposed cassette is taken out from the cassette storage box and set under the subject.
  • the radiation source 52 irradiates the subject with radiation and performs radiography.
  • the battery 55 Prior to the irradiation of radiation, the battery 55 is charged. That is, the battery 55 is charged by inserting an electric plug attached to the mobile radiography apparatus into an outlet in a hospital room. It is also possible to supply power directly from the battery 55 to the radiation source 52 without providing the radiation source driving power supply 53.
  • the conventional mobile radiography apparatus has the following problems. That is, there is a problem that it takes a long time to charge the battery 55.
  • the battery 55 is depleted of electricity. Since the radiation source has a large amount of power, when the battery 55 is exhausted, the number of X-ray imaging that can be performed becomes small.
  • charging is performed from the state where the battery 55 is empty, it takes a long time to charge the battery 55.
  • it is necessary to travel through the corridor of the ward, and it takes time to shoot compared with a normal radiography apparatus. Therefore, to save electricity and shorten the charging time of the battery 55 is a request that is required from the viewpoint of the efficiency of photographing work.
  • the battery 55 is charged while the mobile radiography apparatus is being moved.
  • the electric plug of the mobile radiography apparatus cannot be plugged into the outlet while moving, the battery 55 has not been charged while moving in the conventional configuration.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide a mobile radiography apparatus suitable for examination by preserving the electric power stored in the storage means.
  • a mobile radiography apparatus includes a carriage provided with movable wheels, an accumulation means for supplying electric power, a radiation source to which electric power is supplied from the accumulation means and irradiates radiation, Power generation means connected to the wheels and generating power when a change in the speed of the carriage occurs, and storing the generated power in the storage means is provided.
  • the power generation means described above is configured to act as an electric motor by being supplied with electric power from the storage means, and further includes a drive control means for controlling the drive of the power generation means as the electric motor. It is more desirable to drive the wheels according to the control of the control means.
  • the power generation means also functions as an electric motor. That is, the power generation means outputs power according to the drive control means.
  • the mobile radiography apparatus which assists a movement according to an operator's instruction
  • the above-mentioned storage means includes a battery that supplies power to the power generation means.
  • the present invention can be configured to include a battery as the storage means.
  • the above-mentioned storage means includes a capacitor that supplies power to the radiation source.
  • the radiation source can be more reliably irradiated.
  • the storage means includes a battery that drives the power generation means and a capacitor that supplies power to the radiation source. Therefore, even if the voltage of the battery decreases, the radiation source is supplied with power from the battery and the capacitor, so that the radiation source can reliably irradiate a predetermined dose of radiation.
  • the above-described power generation means is more preferable if power is sent to the capacitor.
  • the power generated by the power generation means can be reliably used for irradiation of the radiation source. A large amount of power is consumed at a time when the radiation source irradiates the radiation, not the carriage. According to the above-described configuration, since it is configured to supply power generated in preference to such an operation that consumes a large amount of power at once, a mobile radiography apparatus capable of irradiating radiation more quickly is provided. it can.
  • the above-described power generation means is more preferable if power is sent to the battery.
  • the power generation means described above has a rotating shaft for inputting power, and the rotating shaft is connected to the wheel via a clutch, and the rotating shaft is braked by the clutch being in a connected state.
  • the power generation means is separated by the clutch. According to this configuration, it is possible to provide a mobile radiographic apparatus having a power generation function in a manual apparatus having no assist function. That is, by connecting the wheel and the power generation means, the wheel is braked and electricity is generated. Further, by separating the wheel and the power generation means, the wheel can freely rotate. Thus, according to the above-described configuration, power generation can be performed during braking of the wheel. And when irradiating with radiation, electric power is supplied from an external power source to the storage means, and the storage means again stores electricity. At this time, since a certain amount of power is stored in the storage means before power is supplied from the external power source, the time required for power storage by the external power source is shortened. Can be provided.
  • the above power generation means has a rotating shaft for inputting power, and is provided with a generator control means for controlling the electrical connection between the power generation means and the storage means, and a braking means for braking the rotation shaft. More desirable.
  • the above-described configuration shows one form of a manual device without an assist function. That is, the rotating shaft for rotating the wheel is provided with a braking means, and the power generation means and the storage means are electrically connected in accordance with the braking applied to the wheel. In this way, the power generation means can generate power as the wheels are braked.
  • FIG. 1 is a plan view illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 1.
  • FIG. 1 is a functional block diagram illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 1.
  • FIG. 1 is a functional block diagram illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 1.
  • FIG. 3 is a functional block diagram illustrating electrical connection of the mobile X-ray imaging apparatus according to the first embodiment.
  • FIG. 3 is a functional block diagram for explaining the operation of the mobile X-ray imaging apparatus according to the first embodiment. It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus of Example 2.
  • FIG. 6 is a functional block diagram for explaining electrical connection of the mobile X-ray imaging apparatus according to Embodiment 2.
  • FIG. FIG. 10 is a functional block diagram for explaining the operation of the mobile X-ray imaging apparatus according to the second embodiment.
  • FIG. 10 is a functional block diagram for explaining the operation of the mobile X-ray imaging apparatus according to the third embodiment.
  • 6 is a functional block diagram illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 3.
  • FIG. It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention. It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention.
  • Example 1 of the mobile radiation imaging apparatus according to Example 1 will be described.
  • X-rays are an example of radiation according to the present invention.
  • a mobile X-ray imaging apparatus 30 includes an X-ray tube 2 that irradiates a subject M with X-rays on a four-wheel type rear wheel drive type movable carriage 1.
  • Equipment for X-ray photography including the beginning, and equipment for traveling on the carriage such as electric motors for traveling (electric motors for rotating wheels) 4A and 4B for rotating the rear wheels 3A and 3B are mounted.
  • a rechargeable battery 5 for supplying electric power necessary for traveling on the carriage and X-ray imaging is mounted.
  • a cassette storage box (not shown) for storing a long drive handle 6 for carrying out the operation of the carriage and a cassette loaded with an X-ray imaging storage medium such as a film. Etc. are deployed.
  • 1A is a plan view when the mobile X-ray imaging apparatus 30 is viewed from above
  • FIG. 1B is a plan view when the mobile X-ray imaging apparatus 30 is viewed from the side.
  • the travel electric motor corresponds to the power generation means of the present invention
  • the battery corresponds to the storage means of the present invention.
  • the mobile X-ray imaging apparatus corresponds to the mobile radiographic apparatus of the present invention.
  • the X-ray tube 2 is attached to the tip of a horizontal arm 8 which is disposed on a vertical column 7 erected in the center near the front of the carriage 1 so as to be movable up and down.
  • the horizontal arm 8 and the X-ray tube 2 are directed to the front side of the carriage 1.
  • an operation panel 9 for performing operations necessary for execution of X-ray imaging is disposed on the rear upper surface of the carriage 1.
  • Operations necessary for the operation of the apparatus such as setting of X-ray imaging conditions such as tube voltage and tube current of the X-ray tube 2 and an instruction to start X-ray imaging (X-ray irradiation start) can be performed by an input operation on the operation panel 9.
  • X-ray imaging conditions such as tube voltage and tube current designated by an input operation on the operation panel 9 are set in the imaging condition setting unit 10 (see FIG. 2).
  • FIG. 2 is a functional block diagram of the mobile radiography apparatus.
  • the cart 1 is equipped with an X-ray tube power supply unit 11 including an inverter circuit 11A and a high voltage generation circuit 11B.
  • the X-ray tube power supply unit 11 is set in the imaging condition setting unit 10 via the inverter circuit 11A and the high voltage generation circuit 11B while receiving necessary power from the battery 5 and the capacitor 16. Control is performed to give the X-ray tube 2 electrical energy suitable for the imaging conditions.
  • the X-ray tube 2 emits X-rays according to the X-ray imaging conditions.
  • the operation panel 9 sends an X-ray irradiation instruction to the X-ray tube power supply unit 11 and the relay control unit 13.
  • the relay control unit 13 controls on / off of a first relay 14a, a second relay 14b, a third relay 14c, and a fourth relay 14d described later.
  • the relay control part 13 receives the instruction
  • an unphotographed cassette is taken out from the cassette storage box, the cassette is set below the subject M, and imaging conditions are set by an input operation on the operation panel 9.
  • the condition setting unit 10 is set.
  • the start of X-ray imaging is commanded by an input operation using the operation panel 9
  • the subject M is irradiated with X-rays from the X-ray tube 2, and a transmitted X-ray image of the subject M is imprinted on the film.
  • the cassette after X-ray imaging is returned to the cassette storage box.
  • the apparatus of the first embodiment is operated at another place such as a shooting place or a parking place (storage place) while the photographing engineer DR holds the driving handle 6 and operates it. It is set as the structure moved to. Therefore, when the apparatus of the first embodiment moves to another place, the photographic engineer DR also follows the traveling carriage 1 and walks to the destination of the apparatus together.
  • the carriage 1 as shown in FIG. 1 (b), the rear wheels 3A and 3B are electrically driven wheels that are rotated by electric motors 4A and 4B for traveling, and the front wheels 3a and 3b are provided with casters. It is a non-drive type wheel that changes freely.
  • the traveling electric motors 4A and 4B correspond to the power generation means of the present invention.
  • FIG. 2 is a functional block diagram of the mobile radiography apparatus.
  • the motor rotation speed control unit 12 controls the rotation direction and the rotation speed of each of the traveling electric motors 4A and 4B according to the operation of the driving handle 6 by the imaging engineer DR. Furthermore, each rear wheel 3A, 3B rotates according to the rotation mode of each traveling electric motor 4A, 4B, so that the carriage 1 travels as operated by the imaging engineer DR.
  • Each of the traveling electric motors 4A and 4B gives rotational energy to each of the rear wheels 3A and 3B while receiving electric power necessary for rotation from a battery 5 described later.
  • the motor rotation speed control unit corresponds to the drive control means of the present invention.
  • the relay control unit 13 functions when the imaging engineer DR gives an instruction to decelerate the mobile radiography apparatus through the operation handle 6.
  • the electric motors 4A and 4B are connected to the capacitor 16 via the first relay 14a as shown in FIG.
  • the electric motors 4A and 4B are connected to the battery 5 through the second relay 14b.
  • the battery 5 is connected to the electric plug 15 and is connected to the X-ray tube power supply unit 11 via the third relay 14c.
  • the capacitor 16 is connected to the X-ray tube power supply unit 11 via the fourth relay 14d. Since two electric motors are provided, in the apparatus of the first embodiment, two first relays 14a and two second relays 14b are provided. Each relay can be turned on and off, and adjusts the passage and interruption of current.
  • the X-ray tube power supply unit 11 converts, for example, a 240 V (volt) DC output supplied from the battery 5 into a high frequency AC by the inverter circuit 11A, and then, for example, 40 kV (kilovolt) to the high voltage generation circuit 11B.
  • the voltage is boosted to a high voltage of 125 kV and then applied to the X-ray tube 2.
  • the battery 5 is charged by inserting the electric plug 15 into an outlet.
  • FIG. 3 shows a state in which the mobile radiography apparatus is running.
  • the relays are turned on and off by the relay control unit 13 that operates in response to an instruction from the driving handle 6 at this time.
  • the first relay 14a is in an off state
  • the second relay 14b is in an on state.
  • the electric power of the battery 5 is supplied to the electric motors 4A and 4B via the second relay 14b.
  • both the third and fourth relays are off.
  • the brake system of the mobile X-ray imaging apparatus 30 is a regenerative brake. That is, when the photographing engineer DR operates the driving handle 6, the relay control unit 13 is configured to cut off the electric power supplied to the electric motors 4A and 4B for traveling.
  • FIG. 4 shows a state when the mobile radiography apparatus is instructed to decelerate.
  • the relay control unit 13 turns on the first relay 14a and turns off the second relay 14b.
  • electric power generation is performed and braking is applied to each rear wheel 3A, 3B.
  • the electric power generated by the power generation is stored in the capacitor 16 through the first relay 14a that is turned on. Even in this state, the third and fourth relays remain off.
  • the relay control unit 13 turns off the first relay 14a again when braking of the electric motors 4A and 4B is completed.
  • FIG. 5 shows a state in which an instruction for X-ray irradiation is given to the mobile radiography apparatus.
  • the relay control unit 13 turns on the third relay 14 c and the fourth relay 14 d, and uses the electric power stored in the battery 5 and the capacitor 16. Output to the X-ray tube power supply unit 11.
  • the electric power generated by the electric motors 4A and 4B is used for X-ray irradiation.
  • the electric motors 4A and 4B for traveling are configured to generate power even when the rear wheels 3A and 3B are started.
  • the electric power generated at this time is also sent to the X-ray tube power supply unit 11.
  • each traveling electric motor 4A, 4B generates power when the speed change of the carriage 1 occurs, and sends the generated power to the X-ray tube power supply unit 11.
  • this speed change is an active one performed by the imaging engineer DR through the driving handle 6, and does not include a case where the speed of the carriage 1 is attenuated due to friction generated on the front wheels and the rear wheels.
  • each of the traveling electric motors 4A and 4B may function as a generator or may function as an electric motor.
  • the relay control unit 13 turns off the first relay 14a again and turns on the second relay 14b.
  • shooting conditions specified by an input operation on the operation panel 9 are set in the shooting condition setting unit 10.
  • the subject M is irradiated with X-rays from the X-ray tube 2, and the transmitted X-ray image of the subject M is imprinted on the cassette film.
  • the electric power supplied by the battery 5 at this time includes the electric motors 4A and 4B for traveling.
  • power generation is performed when the speed change of the carriage 1 occurs.
  • the electric power generated by this power generation is stored in the capacitor 16 and used for X-ray irradiation. That is, in the mobile X-ray imaging apparatus 30 of the present invention, a certain amount of electric power continues to be accumulated in the capacitor 16 when the carriage 1 is moved. In this way, the electric power stored in the battery 5 can be preserved, and the time required for charging can be shortened.
  • the traveling electric motors 4A and 4B which are power generation means, also function as electric motors. That is, the traveling electric motors 4 ⁇ / b> A and 4 ⁇ / b> B output power according to the motor rotation speed control unit 12.
  • the mobile X-ray imaging apparatus 30 which assists a movement according to an operator's instruction
  • the mobile X-ray imaging apparatus 30 according to the second embodiment is different from the configuration in which each of the traveling electric motors 4A and 4B is moved in accordance with the operation of the driving handle 6 as in the first embodiment, and is a hand push without an assist function. Mobile X-ray imaging apparatus.
  • the device of the second embodiment includes a capacitor 5 and braking generators 17 ⁇ / b> A and 17 ⁇ / b> B in place of the battery 5 and the electric motors 4 ⁇ / b> A and 4 ⁇ / b> B for the first embodiment.
  • the braking generator corresponds to the power generation means of the present invention
  • the capacitor corresponds to the storage means of the present invention.
  • the structure regarding the operation panel 9 is the same as that of Example 1, description is abbreviate
  • the rotating shaft 24A of the right braking generator 17A is connected to the right rear wheel 3A via the right clutch 18A
  • the rotating shaft 24B of the left braking generator 17B is connected to the left rear wheel 3B. It is connected via the left clutch 18B.
  • the clutch control unit 19 controls the clutch based on an instruction to the photographing engineer DR performed through the driving handle 6, and mechanically connects and releases the generators 17A, 17B and the rear wheels 3A, 3B. is there.
  • the relay control unit 13 controls ON / OFF of the relay according to the control status of the clutch control unit 19.
  • the capacitor 16 is connected to the electric plug 15, and the capacitor 16 is charged by inserting the electric plug 15 into an outlet.
  • the capacitor 16 is connected to the X-ray tube power supply unit 11 via the third relay 14c, and is connected to the generators 17A and 17B via the first relay 14a.
  • One first relay 14a is provided for each of the generators 17A and 17B.
  • the driving handle 6 sends a start instruction by the imaging engineer DR to the clutch control unit 19.
  • the clutch control unit 19 operates the right clutch 18A and the left clutch 18B to disconnect the dynamic connection between the rear wheels 3A and 3B and the braking generators 17A and 17B. Then, each rear wheel 3A, 3B comes to rotate lightly, and the radiographer DR can move the mobile X-ray imaging apparatus 30 without difficulty. At this time, both the first relay 14a and the third relay 14c are off.
  • the driving handle 6 sends an instruction for deceleration by the imaging engineer DR to the clutch control unit 19.
  • the clutch control unit 19 operates the right clutch 18A and the left clutch 18B to motively connect the rear wheels 3A and 3B and the braking generators 17A and 17B. Then, braking is applied to the rotation of each of the rear wheels 3A and 3B, and the mobile X-ray imaging apparatus 30 decelerates.
  • FIG. 7 shows the electrical connection status of each part when the mobile X-ray imaging apparatus is decelerated.
  • the relay control unit 13 turns on the first relay 14a in accordance with the dynamic connection of the clutch.
  • electricity is generated in each of the braking generators 17A and 17B. This electricity is sent to the capacitor 16 through the first relay 14a and stored there.
  • the relay control unit 13 turns off the first relay 14a again when the braking of the braking generators 17A and 17B is completed.
  • FIG. 8 shows a state where an instruction for X-ray irradiation is given to the mobile radiography apparatus.
  • the relay control unit 13 turns on the third relay 14 c and outputs the electric power stored in the capacitor 16 to the X-ray tube power supply unit 11.
  • the electric power generated by the electric motors 4A and 4B is used for X-ray irradiation.
  • the capacitor 16 can be additionally charged through the electric plug 15 prior to the X-ray irradiation.
  • the braking generators 17A and 17B are disconnected by the clutches 18A and 18B.
  • the mobile X-ray imaging apparatus 30 having a power generation function can be provided in a manual apparatus having no assist function. That is, by connecting the rear wheels 3A, 3B and the braking generators 17A, 17B, braking is applied to the rear wheels 3A, 3B and electricity is generated. Further, by separating the rear wheels 3A and 3B from the braking generators 17A and 17B, the rear wheels 3A and 3B can freely rotate.
  • power generation can be performed when braking the rear wheels 3A and 3B.
  • the mobile X-ray imaging apparatus 30 according to the third embodiment includes a capacitor 16 and each braking generator in place of the battery 5 and the traveling electric motors 4A and 4B in the first embodiment. 17A and 17B. Moreover, the mobile X-ray imaging apparatus 30 according to the third embodiment includes so-called electromagnetic brakes 25A and 25B.
  • the brake control unit 20 corresponds to the generator control means of the present invention, and the electromagnetic brake corresponds to the braking means of the present invention.
  • the brake control unit 20 is provided for the purpose of controlling the electromagnetic brake.
  • the relay control unit 13 controls ON / OFF of the relay.
  • the structure regarding the operation panel 9 is the same as that of Example 1, description is abbreviate
  • the right rear wheel 3A is always connected to the rotary shaft 24A of the right braking generator 17A.
  • a wheel 23A that is fixed to the rotating shaft 24A and rotates therewith, an electromagnetic shoe 21A that is provided so as to surround the wheel 23A, and an electromagnetic that supplies magnetic force to the electromagnetic shoe 21A.
  • a force generator 26A A gap is provided between the wheel 23A and the electromagnetic shoe 21A.
  • the wheel 23A has magnetism.
  • These portions 21A, 23A, and 25A are the right electromagnetic brake 25A in FIG.
  • the left electromagnetic brake 25B has the same configuration as the right electromagnetic brake 25A.
  • the operation handle 6 sends an instruction to start by the imaging engineer DR to the brake control unit 20.
  • the brake control unit 20 cuts off the supply of electric power from the electromagnetic force generation unit 26A.
  • the right rear wheel 3A is in a state where the brake is released.
  • the brake control unit 20 releases the brake of the left rear wheel 3B.
  • the rear wheels 3A and 3B rotate lightly, and the imaging technician DR can move the mobile X-ray imaging apparatus 30 without difficulty.
  • the driving handle 6 sends an instruction of deceleration by the imaging engineer DR to the brake control unit 20 (see FIG. 9).
  • the brake control unit 20 generates a magnetic force in the electromagnetic shoe 21A by supplying electric power to the electromagnetic force generation unit 26A. Then, the electromagnetic shoe 21A is attracted to the wheel 23A that has been freely rotated. The electromagnetic shoe 21A is attracted to and contacts the wheel 23A, and braking is applied to the rotation of the wheel 23A. Along with this, the rotation of the rotating shaft 24A is also braked.
  • the relay control unit 13 turns on the first relay 14a.
  • the third relay 14c remains off.
  • the right braking generator 17A When the wheel 23A is magnetically braked, the right braking generator 17A is loaded, and accordingly, the rotating shaft 24 is braked, and the speed change of the rotating shaft of the right braking generator 17A is caused. The right braking generator 17A starts power generation. At this time, the electric power generated by the right braking generator 17A is accumulated in the capacitor 16 through the first relay 14a (see FIG. 9).
  • the brake control unit 20 applies the brake of the left rear wheel 3B.
  • the rear wheels 3A and 3B are braked simultaneously, and the radiographer DR can stop the mobile X-ray imaging apparatus 30 without difficulty.
  • the electric power generated by the left braking generator 17B is stored in the capacitor 16 through the first relay 14a.
  • the electricity accumulated in the capacitor 16 is used for X-ray irradiation of the X-ray tube 2.
  • the relay control unit 13 turns off the first relay 14a and turns on the third relay 14c according to the instruction of the operation panel 9 (see FIG. 9).
  • the relay control unit 13 turns off the first relay 14a again when the braking of the braking generators 17A and 17B is completed.
  • the third embodiment shows one form of a manual device without an assist function. That is, the electromagnetic brakes 25A and 25B are provided on the rotating shaft 24 that rotates the rear wheels 3A and 3B. In this way, the braking generators 17A and 17B can generate electric power as the rear wheels 3A and 3B are braked.
  • the capacitor 16 When X-rays are irradiated, power is supplied to the capacitor 16 from an external power source, and the capacitor 16 again accumulates electricity. At this time, since a certain amount of power is stored in the capacitor 16 before power is supplied from the external power source, the time required for power storage by the external power source is shortened, and mobile X-ray imaging that can immediately irradiate X-rays.
  • An apparatus 30 can be provided.
  • the present invention is not limited to the above-described configuration, and can be modified as follows.
  • the power source of the battery 5 may be temporarily stored in the capacitor 16.
  • the battery 5 is connected to the capacitor 16 via the fifth relay 14e as shown in FIG.
  • the fifth relay 14e is turned on while all of the first relay 14a, the second relay 14b, the third relay 14c, and the fourth relay 14d are turned off, and the capacitor 16 is additionally provided. Is charged.
  • the fifth relay 14e is turned off.
  • Such control of the fifth relay 14e is performed by the relay control unit 13.
  • the imaging engineer DR can instruct the relay control unit 13 to turn on / off the fifth relay 14e through the operation panel 9.
  • the X-ray tube 2 can be irradiated more reliably. That is, the storage means includes a battery 5 that drives each of the rear wheels 3 ⁇ / b> A and 3 ⁇ / b> B and a capacitor 16 that supplies power to the X-ray tube 2. Thereby, even if the voltage of the battery 5 decreases, the X-ray tube 2 is supplied with power from the battery 5 and the capacitor 16, so that the X-ray tube 2 reliably irradiates a predetermined dose of X-rays. Can do.
  • the power generated by each of the rear wheels 3A and 3B can be reliably used for irradiation of the X-ray tube 2.
  • a large amount of power is consumed at a time when the X-ray tube 2 irradiates X-rays, not driving the carriage 1.
  • the generated power is stored in the capacitor 16 as described above, it is configured to supply the generated power in preference to X-ray irradiation that consumes a large amount of power at a time.
  • a mobile X-ray imaging apparatus 30 capable of promptly irradiating X-rays can be provided.
  • the capacitor 16 may not be provided.
  • the first relay 14a is connected to the battery 5 instead of the capacitor 16 as shown in FIG.
  • the fourth relay 14d is not provided.
  • FIG. 13 shows a state in which the mobile radiography apparatus is traveling. At this time, the first relay 14a is off. Other aspects of the relay are the same as described in FIG. FIG. 14 shows a state when the mobile radiography apparatus is braked. At this time, the first relay 14a is on, and the electric power generated by the electric motor is stored in the battery 5 through the first relay 14a.
  • FIG. 15 shows a state in which the mobile radiography apparatus irradiates X-rays.
  • the first relay 14a is off.
  • the other relays are the same as described in FIG.
  • the battery 5 can be used instead of the capacitor 16 as shown in FIG. Since the operation is the same as the operation described with reference to FIGS. 7 to 8, the description thereof will be omitted.
  • the present invention is suitable for medical devices.

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  • Apparatus For Radiation Diagnosis (AREA)

Abstract

Provided is a mobile radiation imaging device ideal for inspection by conserving power stored in a storage medium. With the invented configuration, power is generated when there is a change in speed in a cart (1). The power thus generated is stored in a battery (5), and is used for the emission of X-rays. Specifically, with a mobile X-ray imaging device (30), a certain amount of power continues to be stored in the battery (5) as the cart (1) is moved. Power stored in the battery (5) can thus be conserved, and the time needed to charge the battery (5) can be shortened.

Description

移動式放射線撮影装置Mobile radiography system
　この発明は、移動可能な台車に放射線源等の放射線撮影装備と、放射線源に電力を供給する電力供給手段とが搭載されている移動式放射線撮影装置に関し、特に、放射線を照射するときの放射線源の電力供給源を改良する技術に関する。 The present invention relates to a mobile radiography apparatus in which a movable carriage is equipped with a radiographic equipment such as a radiation source and a power supply means for supplying power to the radiation source, and in particular, radiation when irradiating radiation. The present invention relates to a technique for improving a power supply source of a source.
　医療機関には、放射線撮影を行う回診用の移動式放射線撮影装置が配備されている。従来の移動式放射線撮影装置は、図１７に示すように、移動可能な台車５１に、被検体に放射線を照射する放射線源５２やバッテリー５５等の放射線撮影用装備類と、車輪回転用の電気モータ等の台車走行用装備類に加えて、放射線撮影に必要な電力を供給する放射線源駆動用電源（コンデンサ）５３が搭載されている（例えば特許文献１を参照。）。 Medical institutions have mobile radiography devices for round trips that perform radiography. As shown in FIG. 17, a conventional mobile radiography apparatus includes a movable carriage 51, radiographic equipment such as a radiation source 52 and a battery 55 for irradiating a subject, and electric power for rotating a wheel. A radiation source driving power source (capacitor) 53 that supplies electric power necessary for radiation imaging is mounted in addition to the cart traveling equipment such as a motor (see, for example, Patent Document 1).
　また、台車５１の後部には、フィルムなどの放射線撮影用記憶媒体を装填したカセッテ（図示省略）を収納するカセッテ収納ボックスも搭載されている。更には、カセッテの代わりとして、或いは、カセッテに加えて、被検体の透過放射線像を検出するフラットパネル型放射線検出器（図示省略）が、台車５１に搭載されることもある。 Also, a cassette storage box for storing a cassette (not shown) loaded with a radiation imaging storage medium such as a film is mounted on the rear portion of the carriage 51. Further, a flat panel radiation detector (not shown) for detecting a transmitted radiation image of the subject may be mounted on the carriage 51 in place of or in addition to the cassette.
　図１７の移動式放射線撮影装置により放射線撮影を実行する場合、撮影技師ＤＲは、運転ハンドル５７を手で掴んで操縦しながら台車５１を放射線撮影対象の被検体（患者）の居る病室（撮影場所）へ向けて走行させる。 When radiography is performed by the mobile radiography apparatus of FIG. 17, the radiographer DR holds the operation handle 57 by hand and steers the cart 51 with the patient (patient) subject to radiography (imaging location). )
　移動式放射線撮影装置が病室に到着したら、カセッテ収納ボックスから未露光のカセッテを取り出して被検体の下にセットしておき、バッテリー５５から電力を供給して放射線源駆動用電源（コンデンサ）５３を作動させることにより放射線源５２から被検体に放射線を照射して放射線撮影を行なう。放射線の照射に先立って、バッテリー５５の充電を行っておく。すなわち、移動式放射線撮影装置に付属の電気プラグを病室内のコンセントに差し込むことでバッテリー５５が充電される構成となっている。なお、放射線源駆動用電源５３を設けずにバッテリー５５から直接放射線源５２に電力を供給する構成とすることもできる。
特開２００６－１４１７７７号公報 When the mobile radiography apparatus arrives at the patient's room, the unexposed cassette is taken out from the cassette storage box and set under the subject. By operating, the radiation source 52 irradiates the subject with radiation and performs radiography. Prior to the irradiation of radiation, the battery 55 is charged. That is, the battery 55 is charged by inserting an electric plug attached to the mobile radiography apparatus into an outlet in a hospital room. It is also possible to supply power directly from the battery 55 to the radiation source 52 without providing the radiation source driving power supply 53.
JP 2006-141777 A
　しかしながら、従来の移動式放射線撮影装置には、次のような問題点がある。すなわち、バッテリー５５の充電には長い時間を要してしまうという問題点がある。移動式放射線撮影装置が病室内に移送された時点でバッテリー５５は電気を消耗してしまっている。放射線源は多くの電力を有するので、バッテリー５５が消耗すると、撮影できるＸ線撮影の回数は少ないものとなる。また、バッテリー５５が空となった状態から充電を行おうとすると、バッテリー５５の充電に長い時間を要してしまう。移動式放射線撮影装置で放射線撮影を行うには、病棟の廊下を往来する必要があり、通常の放射線撮影装置と比べて、撮影に時間がかかる。したがって、電気を節約してバッテリー５５の充電時間を短くすることは、撮影作業の効率性の観点から求められる要請なのである。 However, the conventional mobile radiography apparatus has the following problems. That is, there is a problem that it takes a long time to charge the battery 55. When the mobile radiography apparatus is transferred into the hospital room, the battery 55 is depleted of electricity. Since the radiation source has a large amount of power, when the battery 55 is exhausted, the number of X-ray imaging that can be performed becomes small. In addition, if charging is performed from the state where the battery 55 is empty, it takes a long time to charge the battery 55. In order to perform radiography with a mobile radiography apparatus, it is necessary to travel through the corridor of the ward, and it takes time to shoot compared with a normal radiography apparatus. Therefore, to save electricity and shorten the charging time of the battery 55 is a request that is required from the viewpoint of the efficiency of photographing work.
　そこで、移動式放射線撮影装置を移動させている間にバッテリー５５が充電されれば望ましい。しかし、移動中に移動式放射線撮影装置の電気プラグをコンセントに差し込むことはできないので、従来の構成に置いて、バッテリー５５の移動中の充電は行われてこなかった。 Therefore, it is desirable that the battery 55 is charged while the mobile radiography apparatus is being moved. However, since the electric plug of the mobile radiography apparatus cannot be plugged into the outlet while moving, the battery 55 has not been charged while moving in the conventional configuration.
　本発明は、この様な事情に鑑みてなされたものであって、その目的は、蓄積手段に蓄積される電力を温存させることで検査に好適な移動式放射線撮影装置を提供することにある。 The present invention has been made in view of such circumstances, and an object thereof is to provide a mobile radiography apparatus suitable for examination by preserving the electric power stored in the storage means.
　本発明は、この様な課題を解決するために、次のような構成をとる。
　すなわち、本発明に係る移動式放射線撮影装置は、移動可能な車輪を備えた台車と、電力を供給する蓄積手段と、蓄積手段から電力が供給されるとともに放射線を照射する放射線源と、台車の車輪に接続されるとともに台車の速度変化が生じたときに発電を行い、生じた電力を蓄積手段に蓄電させる発電手段とを備えることを特徴とするものである。 In order to solve such a problem, the present invention has the following configuration.
That is, a mobile radiography apparatus according to the present invention includes a carriage provided with movable wheels, an accumulation means for supplying electric power, a radiation source to which electric power is supplied from the accumulation means and irradiates radiation, Power generation means connected to the wheels and generating power when a change in the speed of the carriage occurs, and storing the generated power in the storage means is provided.
　［作用・効果］本発明の構成によれば、台車の速度変化が生じた場合、発電が行われる。この発電で生じた電力は、蓄積手段に蓄えられ、これが放射線の照射に用いられる。つまり、本発明の移動式放射線撮影装置は、台車を移動させるに当たり、蓄積手段にある程度の電力が蓄積され続けることになる。こうして、蓄積手段に蓄えられた電力を温存させることができ、蓄積手段の充電に要する時間を短くすることができる。 [Operation / Effect] According to the configuration of the present invention, power generation is performed when a change in the speed of the carriage occurs. The electric power generated by this power generation is stored in the storage means, and this is used for radiation irradiation. In other words, when the mobile radiographic apparatus of the present invention moves the carriage, a certain amount of electric power continues to be stored in the storage means. Thus, the electric power stored in the storage means can be preserved, and the time required for charging the storage means can be shortened.
　また、上述の発電手段は、蓄積手段から電力を供給されることにより電動機として作用する構成となっており、発電手段の電動機としての駆動を制御する駆動制御手段を更に備え、発電手段は、駆動制御手段の制御にしたがって、車輪を駆動すればより望ましい。 In addition, the power generation means described above is configured to act as an electric motor by being supplied with electric power from the storage means, and further includes a drive control means for controlling the drive of the power generation means as the electric motor. It is more desirable to drive the wheels according to the control of the control means.
　［作用・効果］上述の構成によれば、発電手段は、電動機としても作用する。すなわち、発電手段は、駆動制御手段にしたがって、動力を出力する。これにより、術者の指示に合わせて移動をアシストする移動式放射線撮影装置が提供できる。 [Operation / Effect] According to the above-described configuration, the power generation means also functions as an electric motor. That is, the power generation means outputs power according to the drive control means. Thereby, the mobile radiography apparatus which assists a movement according to an operator's instruction | indication can be provided.
　また、上述の蓄積手段は、発電手段に電力を供給するバッテリーを備えていればより望ましい。 In addition, it is more desirable that the above-mentioned storage means includes a battery that supplies power to the power generation means.
　［作用・効果］本発明は、上述のように蓄積手段として、バッテリーを備える構成とすることができる。 [Operation / Effect] As described above, the present invention can be configured to include a battery as the storage means.
　また、上述の蓄積手段は、放射線源に電力を供給するコンデンサとを備えていればより望ましい。 Further, it is more desirable that the above-mentioned storage means includes a capacitor that supplies power to the radiation source.
　［作用・効果］上述の構成によれば、放射線源の照射をより確実に行うことができる。すなわち、蓄積手段は、発電手段を駆動させるバッテリーと、放射線源に電力を供給するコンデンサとを有している。これにより、バッテリーの電圧が低下したとしても、放射線源は、バッテリーおよびコンデンサから電力を供給されるので、放射線源は、確実に所定の線量の放射線を照射することができる。 [Operation / Effect] According to the above-described configuration, the radiation source can be more reliably irradiated. That is, the storage means includes a battery that drives the power generation means and a capacitor that supplies power to the radiation source. Thereby, even if the voltage of the battery decreases, the radiation source is supplied with power from the battery and the capacitor, so that the radiation source can reliably irradiate a predetermined dose of radiation.
　また、上述の発電手段は、コンデンサに電力を送出すればより望ましい。 In addition, the above-described power generation means is more preferable if power is sent to the capacitor.
　［作用・効果］上述の構成によれば、発電手段によって発電された電力を確実に放射線源の照射に用いることができる。一度に大量の電力を消耗するのは、台車の駆動ではなく、放射線源が放射線を照射した時点である。上述の構成によれば、この様な一度に大量の電力を消耗する操作に優先して発電した電力を供給する構成となっているので、より速やかに放射線が照射できる移動式放射線撮影装置が提供できる。 [Operation / Effect] According to the above-described configuration, the power generated by the power generation means can be reliably used for irradiation of the radiation source. A large amount of power is consumed at a time when the radiation source irradiates the radiation, not the carriage. According to the above-described configuration, since it is configured to supply power generated in preference to such an operation that consumes a large amount of power at once, a mobile radiography apparatus capable of irradiating radiation more quickly is provided. it can.
　また、上述の発電手段は、バッテリーに電力を送出すればより望ましい。 Also, the above-described power generation means is more preferable if power is sent to the battery.
　［作用・効果］この様な構成とすることで、コンデンサーを設けないようにすることができる。この様にすれば、装置の軽量化が図れる。 [Operation / Effect] By adopting such a configuration, it is possible to avoid providing a capacitor. In this way, the weight of the device can be reduced.
　また、上述の発電手段は、動力を入力する回転軸を有し、回転軸は、クラッチを介して車輪に接続され、クラッチが連結状態となることで回転軸の制動がかけられればより望ましい。 Further, it is more desirable that the power generation means described above has a rotating shaft for inputting power, and the rotating shaft is connected to the wheel via a clutch, and the rotating shaft is braked by the clutch being in a connected state.
　［作用・効果］上述の構成によれば、発電手段は、クラッチによって切り離される。この構成によれば、アシスト機能のない手動の装置において、発電機能を有する移動式放射線撮影装置を提供することができる。すなわち、車輪と発電手段とを接続することによって、車輪に制動がかかるとともに電気が生じる。また、車輪と発電手段を切り離すことによって、車輪が自由に回転するようになる。こうして、上述の構成によれば、車輪の制動に際して、発電を行うことができる。そして、放射線を照射する際、外部電源から蓄積手段に電力が供給されて、蓄積手段は、改めて電気の蓄積を行うことになる。この際、外部電源から電力が供給される前にある程度の電力が蓄積手段に蓄えられているのであるから、外部電源による蓄電に係る時間が短くなり、直ちに放射線が照射できる移動式放射線撮影装置が提供できる。 [Operation / Effect] According to the above-described configuration, the power generation means is separated by the clutch. According to this configuration, it is possible to provide a mobile radiographic apparatus having a power generation function in a manual apparatus having no assist function. That is, by connecting the wheel and the power generation means, the wheel is braked and electricity is generated. Further, by separating the wheel and the power generation means, the wheel can freely rotate. Thus, according to the above-described configuration, power generation can be performed during braking of the wheel. And when irradiating with radiation, electric power is supplied from an external power source to the storage means, and the storage means again stores electricity. At this time, since a certain amount of power is stored in the storage means before power is supplied from the external power source, the time required for power storage by the external power source is shortened. Can be provided.
　また、上述の発電手段は、動力を入力する回転軸を有し、発電手段と蓄積手段との電気的な接続を制御する発電機制御手段と、回転軸を制動する制動手段が設けられていればより望ましい。 Further, the above power generation means has a rotating shaft for inputting power, and is provided with a generator control means for controlling the electrical connection between the power generation means and the storage means, and a braking means for braking the rotation shaft. More desirable.
　［作用・効果］上述の構成は、アシスト機能のない手動の装置における１形態を示している。すなわち、車輪を回転させる回転軸には制動手段が設けられており、車輪に制動が係るのに合わせて発電手段と蓄積手段が電気的に接続される構成となっている。この様にすることで、車輪が制動されるのに合わせて発電手段は発電を行うことができるのである。 [Operation / Effect] The above-described configuration shows one form of a manual device without an assist function. That is, the rotating shaft for rotating the wheel is provided with a braking means, and the power generation means and the storage means are electrically connected in accordance with the braking applied to the wheel. In this way, the power generation means can generate power as the wheels are braked.
実施例１の移動式Ｘ線撮影装置の構成を説明する平面図である。1 is a plan view illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 1. FIG. 実施例１の移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。1 is a functional block diagram illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 1. FIG. 実施例１の移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。1 is a functional block diagram illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 1. FIG. 実施例１の移動式Ｘ線撮影装置の電気接続を説明する機能ブロック図である。FIG. 3 is a functional block diagram illustrating electrical connection of the mobile X-ray imaging apparatus according to the first embodiment. 実施例１の移動式Ｘ線撮影装置の動作を説明する機能ブロック図である。FIG. 3 is a functional block diagram for explaining the operation of the mobile X-ray imaging apparatus according to the first embodiment. 実施例２の移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus of Example 2. 実施例２の移動式Ｘ線撮影装置の電気接続を説明する機能ブロック図である。6 is a functional block diagram for explaining electrical connection of the mobile X-ray imaging apparatus according to Embodiment 2. FIG. 実施例２の移動式Ｘ線撮影装置の動作を説明する機能ブロック図である。FIG. 10 is a functional block diagram for explaining the operation of the mobile X-ray imaging apparatus according to the second embodiment. 実施例３の移動式Ｘ線撮影装置の動作を説明する機能ブロック図である。FIG. 10 is a functional block diagram for explaining the operation of the mobile X-ray imaging apparatus according to the third embodiment. 実施例３の移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。6 is a functional block diagram illustrating a configuration of a mobile X-ray imaging apparatus according to Embodiment 3. FIG. 本発明の１変形例に係る移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention. 本発明の１変形例に係る移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention. 本発明の１変形例に係る移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention. 本発明の１変形例に係る移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention. 本発明の１変形例に係る移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention. 本発明の１変形例に係る移動式Ｘ線撮影装置の構成を説明する機能ブロック図である。It is a functional block diagram explaining the structure of the mobile X-ray imaging apparatus which concerns on one modification of this invention. 従来構成を説明する平面図である。It is a top view explaining the conventional structure.
１                   台車
２                   放射線源
４Ａ，４Ｂ           走行用電動モータ（発電手段）
５                   バッテリー（蓄積手段）
１２                 モータ回転速度制御部（駆動制御手段）
１６                 コンデンサ（蓄積手段）
１７Ａ，１７Ｂ              制動用発電機（発電手段）
１８Ａ，１８Ｂ              電磁ブレーキ（制動手段）
１９Ａ，１９Ｂ              クラッチ
２０                 ブレーキ制御部（発電機制御手段）
２４Ａ，２４Ｂ              回転軸
３０                 移動式Ｘ線撮影装置（移動式放射線撮影装置） 1 bogie 2 radiation source 4A, 4B electric motor for running
5 Battery (storage means)
12 Motor rotation speed control unit (drive control means)
16 Capacitor (storage means)
17A, 17B Brake generator (power generation means)
18A, 18B Electromagnetic brake (braking means)
19A, 19B Clutch 20 Brake control unit (generator control means)
24A, 24B Rotating shaft 30 Mobile X-ray apparatus
　以下、実施例１に係る移動式放射線撮影装置の実施例１について説明する。なお、Ｘ線は、本発明に係る放射線の一例である。 Hereinafter, Example 1 of the mobile radiation imaging apparatus according to Example 1 will be described. X-rays are an example of radiation according to the present invention.
　実施例１の移動式Ｘ線撮影装置３０は、図１に示すように、４輪タイプで後輪駆動型の移動可能な台車１に、被検体ＭにＸ線を照射するＸ線管２を始めとするＸ線撮影用装備類と、各後輪３Ａ，３Ｂを回転させる各走行用電動モータ（車輪回転用の電気モータ）４Ａ，４Ｂを始めとする台車走行用装備類が搭載されているのに加えて、台車走行およびＸ線撮影に必要な電力を供給する充電式のバッテリー５が搭載されている。また、台車１の後部側には、台車走行時の操縦を行なう為の長棒状の運転ハンドル６や、フィルム等のＸ線撮影用記憶媒体を装填したカセッテを収納するカセッテ収納ボックス（図示省略）などが配備搭載されている。なお、図１（ａ）は、移動式Ｘ線撮影装置３０を上から見たときの平面図であり、図１（ｂ）は、移動式Ｘ線撮影装置３０を側面から見たときの平面図である。走行用電動モータは、本発明の発電手段に相当し、バッテリーは、本発明の蓄積手段に相当する。また、移動式Ｘ線撮影装置は、本発明の移動式放射線撮影装置に相当する。 As shown in FIG. 1, a mobile X-ray imaging apparatus 30 according to the first embodiment includes an X-ray tube 2 that irradiates a subject M with X-rays on a four-wheel type rear wheel drive type movable carriage 1. Equipment for X-ray photography including the beginning, and equipment for traveling on the carriage such as electric motors for traveling (electric motors for rotating wheels) 4A and 4B for rotating the rear wheels 3A and 3B are mounted. In addition to the above, a rechargeable battery 5 for supplying electric power necessary for traveling on the carriage and X-ray imaging is mounted. Also, on the rear side of the carriage 1, a cassette storage box (not shown) for storing a long drive handle 6 for carrying out the operation of the carriage and a cassette loaded with an X-ray imaging storage medium such as a film. Etc. are deployed. 1A is a plan view when the mobile X-ray imaging apparatus 30 is viewed from above, and FIG. 1B is a plan view when the mobile X-ray imaging apparatus 30 is viewed from the side. FIG. The travel electric motor corresponds to the power generation means of the present invention, and the battery corresponds to the storage means of the present invention. The mobile X-ray imaging apparatus corresponds to the mobile radiographic apparatus of the present invention.
　Ｘ線管２は台車１の正面寄り中央に立設された垂直支柱７に昇降可能に配設されている水平アーム８の先端に取り付けられている。Ｘ線撮影を行なう時は、水平アーム８をＸ線管２ごと台車１の正面側に向ける構成とされている。 The X-ray tube 2 is attached to the tip of a horizontal arm 8 which is disposed on a vertical column 7 erected in the center near the front of the carriage 1 so as to be movable up and down. When X-ray imaging is performed, the horizontal arm 8 and the X-ray tube 2 are directed to the front side of the carriage 1.
　また、Ｘ線撮影の実行に必要な操作を行なう操作パネル９は、台車１の後寄り上面に配設されている。操作パネル９による入力操作でＸ線管２の管電圧・管電流などのＸ線撮影条件の設定や、Ｘ線撮影開始（Ｘ線照射開始）の指令など装置の稼働に必要な操作が行なえる。操作パネル９の入力操作により指定された管電圧・管電流などのＸ線撮影条件は撮影条件設定部１０（図２参照）に設定される。 Further, an operation panel 9 for performing operations necessary for execution of X-ray imaging is disposed on the rear upper surface of the carriage 1. Operations necessary for the operation of the apparatus such as setting of X-ray imaging conditions such as tube voltage and tube current of the X-ray tube 2 and an instruction to start X-ray imaging (X-ray irradiation start) can be performed by an input operation on the operation panel 9. . X-ray imaging conditions such as tube voltage and tube current designated by an input operation on the operation panel 9 are set in the imaging condition setting unit 10 (see FIG. 2).
　図２は、移動式放射線撮影装置の機能ブロック図である。図２に示すように、台車１にはインバータ回路１１Ａや高圧発生回路１１Ｂを含むＸ線管電力供給部１１が搭載されている。Ｘ線撮影の際、Ｘ線管電力供給部１１が、バッテリー５，コンデンサ１６から必要な電力の供給を受けながらインバータ回路１１Ａや高圧発生回路１１Ｂを介して、撮影条件設定部１０にセットされている撮影条件に見合った電気エネルギーをＸ線管２に与える制御を実行する。Ｘ線管電力供給部１１から電気エネルギーが供給されるのに伴ってＸ線管２はＸ線撮影条件通りにＸ線を照射する。操作パネル９は、Ｘ線管電力供給部１１，リレー制御部１３にＸ線照射の指示を送出している。この動作により、リレー制御部１３は、後述の第１リレー１４ａ，第２リレー１４ｂ，第３リレー１４ｃ，第４リレー１４ｄのオン・オフを制御する。なお、リレー制御部１３は、運転ハンドル６の指示も受けて各リレーのオン・オフを制御する。 FIG. 2 is a functional block diagram of the mobile radiography apparatus. As shown in FIG. 2, the cart 1 is equipped with an X-ray tube power supply unit 11 including an inverter circuit 11A and a high voltage generation circuit 11B. During X-ray imaging, the X-ray tube power supply unit 11 is set in the imaging condition setting unit 10 via the inverter circuit 11A and the high voltage generation circuit 11B while receiving necessary power from the battery 5 and the capacitor 16. Control is performed to give the X-ray tube 2 electrical energy suitable for the imaging conditions. As electric energy is supplied from the X-ray tube power supply unit 11, the X-ray tube 2 emits X-rays according to the X-ray imaging conditions. The operation panel 9 sends an X-ray irradiation instruction to the X-ray tube power supply unit 11 and the relay control unit 13. By this operation, the relay control unit 13 controls on / off of a first relay 14a, a second relay 14b, a third relay 14c, and a fourth relay 14d described later. In addition, the relay control part 13 receives the instruction | indication of the driving handle 6, and controls ON / OFF of each relay.
　実施例１の装置によりＸ線撮影を実行する時は、カセッテ収納ボックスから未撮影のカセッテを取り出し、被検体Ｍの下側にカセッテをセットすると共に、操作パネル９の入力操作で撮影条件は撮影条件設定部１０を設定する。そして、操作パネル９による入力操作でＸ線撮影開始を指令すると、Ｘ線管２から被検体ＭにＸ線が照射され、被検体Ｍの透過Ｘ線像がフィルムに写し込まれる。Ｘ線撮影の済んだカセッテは、カセッテ収納ボックスへ戻される。 When X-ray imaging is performed by the apparatus of the first embodiment, an unphotographed cassette is taken out from the cassette storage box, the cassette is set below the subject M, and imaging conditions are set by an input operation on the operation panel 9. The condition setting unit 10 is set. When the start of X-ray imaging is commanded by an input operation using the operation panel 9, the subject M is irradiated with X-rays from the X-ray tube 2, and a transmitted X-ray image of the subject M is imprinted on the film. The cassette after X-ray imaging is returned to the cassette storage box.
　また、実施例１の装置は、図１（ｂ）に示すように、撮影技師ＤＲが運転ハンドル６を手で掴んで操縦しながら装置を撮影場所や駐車場所（格納場所）等の別の場所に移動させる構成とされている。したがって実施例１の装置が別の場所へ移動する時は、撮影技師ＤＲも走行する台車１に付き添って一緒に装置の移動先に歩いてゆくことになる。台車１の場合、図１（ｂ）に示すように、各後輪３Ａ，３Ｂが走行用電動モータ４Ａ，４Ｂで回転させられる電動駆動型車輪であり、各前輪３ａ，３ｂはキャスタ付きで向きが自在に変る非駆動型車輪である。走行用電動モータ４Ａ，４Ｂは、本発明の発電手段に相当する。 Further, as shown in FIG. 1 (b), the apparatus of the first embodiment is operated at another place such as a shooting place or a parking place (storage place) while the photographing engineer DR holds the driving handle 6 and operates it. It is set as the structure moved to. Therefore, when the apparatus of the first embodiment moves to another place, the photographic engineer DR also follows the traveling carriage 1 and walks to the destination of the apparatus together. In the case of the carriage 1, as shown in FIG. 1 (b), the rear wheels 3A and 3B are electrically driven wheels that are rotated by electric motors 4A and 4B for traveling, and the front wheels 3a and 3b are provided with casters. It is a non-drive type wheel that changes freely. The traveling electric motors 4A and 4B correspond to the power generation means of the present invention.
　図２は、移動式放射線撮影装置の機能ブロック図である。図２に示すように、撮影技師ＤＲによる運転ハンドル６の操縦に従って、モータ回転速度制御部１２が各走行用電動モータ４Ａ，４Ｂの回転方向と回転速度をそれぞれ制御する。さらに各走行用電動モータ４Ａ，４Ｂの回転態様に応じて各後輪３Ａ，３Ｂが回転することによって、台車１が撮影技師ＤＲの操縦の通りに走行する。なお、各走行用電動モータ４Ａ，４Ｂは回転に必要な電力を後述のバッテリー５から受け取りながら各後輪３Ａ，３Ｂに回転エネルギーを与える。モータ回転速度制御部は、本発明の駆動制御手段に相当する。リレー制御部１３は、撮影技師ＤＲが運転ハンドル６を通じて、移動式放射線撮影装置を減速する指示を行った時点で機能する。 FIG. 2 is a functional block diagram of the mobile radiography apparatus. As shown in FIG. 2, the motor rotation speed control unit 12 controls the rotation direction and the rotation speed of each of the traveling electric motors 4A and 4B according to the operation of the driving handle 6 by the imaging engineer DR. Furthermore, each rear wheel 3A, 3B rotates according to the rotation mode of each traveling electric motor 4A, 4B, so that the carriage 1 travels as operated by the imaging engineer DR. Each of the traveling electric motors 4A and 4B gives rotational energy to each of the rear wheels 3A and 3B while receiving electric power necessary for rotation from a battery 5 described later. The motor rotation speed control unit corresponds to the drive control means of the present invention. The relay control unit 13 functions when the imaging engineer DR gives an instruction to decelerate the mobile radiography apparatus through the operation handle 6.
　電動モータ４Ａ，４Ｂの電気的な接続について説明する。電動モータ４Ａ，４Ｂは、図２に示すように、第１リレー１４ａを介してコンデンサ１６に接続されている。また、電動モータ４Ａ，４Ｂは、第２リレー１４ｂを介してバッテリー５に接続されている。バッテリー５は、電気プラグ１５に接続されており、第３リレー１４ｃを介してＸ線管電力供給部１１に接続されている。コンデンサ１６は第４リレー１４ｄを介してＸ線管電力供給部１１に接続されている。なお、電動モータは２つ設けられているので、実施例１の装置においては、第１リレー１４ａと第２リレー１４ｂは、２つずつ設けられている。各リレーは、オン・オフが可能であり、電流の通過・遮断を調節するためのものである。なお、Ｘ線管電力供給部１１は、バッテリー５から供給される例えば２４０Ｖ（ボルト）の直流出力がインバータ回路１１Ａで高周波の交流に変換された後、高圧発生回路１１Ｂで例えば４０ｋＶ（キロボルト）～１２５ｋＶの高電圧に昇圧されてから、Ｘ線管２に印加される構成とされている。なお、電気プラグ１５をコンセントに差し込むことで、バッテリー５が充電される構成となっている。 The electrical connection between the electric motors 4A and 4B will be described. The electric motors 4A and 4B are connected to the capacitor 16 via the first relay 14a as shown in FIG. The electric motors 4A and 4B are connected to the battery 5 through the second relay 14b. The battery 5 is connected to the electric plug 15 and is connected to the X-ray tube power supply unit 11 via the third relay 14c. The capacitor 16 is connected to the X-ray tube power supply unit 11 via the fourth relay 14d. Since two electric motors are provided, in the apparatus of the first embodiment, two first relays 14a and two second relays 14b are provided. Each relay can be turned on and off, and adjusts the passage and interruption of current. The X-ray tube power supply unit 11 converts, for example, a 240 V (volt) DC output supplied from the battery 5 into a high frequency AC by the inverter circuit 11A, and then, for example, 40 kV (kilovolt) to the high voltage generation circuit 11B. The voltage is boosted to a high voltage of 125 kV and then applied to the X-ray tube 2. The battery 5 is charged by inserting the electric plug 15 into an outlet.
　図３は、移動式放射線撮影装置が走行中の状態を示している。電動モータ４Ａ，４Ｂを駆動させて各後輪３Ａ，３Ｂを回転させる場合には、このとき、各リレーは運転ハンドル６の指示を受けて動作するリレー制御部１３によってオン・オフが決められる。具体的には、第１リレー１４ａは、オフ状態であるとともに、第２リレー１４ｂはオン状態である。こうして、バッテリー５の電力が第２リレー１４ｂを介して電動モータ４Ａ，４Ｂに供給される。なお、この場合、第３，第４リレーは、ともにオフである。 FIG. 3 shows a state in which the mobile radiography apparatus is running. When the electric motors 4A and 4B are driven to rotate the rear wheels 3A and 3B, the relays are turned on and off by the relay control unit 13 that operates in response to an instruction from the driving handle 6 at this time. Specifically, the first relay 14a is in an off state, and the second relay 14b is in an on state. In this way, the electric power of the battery 5 is supplied to the electric motors 4A and 4B via the second relay 14b. In this case, both the third and fourth relays are off.
　また、実施例１に係る移動式Ｘ線撮影装置３０のブレーキの方式は、回生ブレーキとなっている。すなわち、撮影技師ＤＲが運転ハンドル６を操作すると、リレー制御部１３は各走行用電動モータ４Ａ，４Ｂに供給していた電力を打ち切る構成となっている。図４は、移動式放射線撮影装置に減速の指示がされたときの状態を表している。リレー制御部１３は、第１リレー１４ａをオンとし、第２リレー１４ｂをオフとする。すると、各電動モータ４Ａ，４Ｂにおいては、発電が行われ、各後輪３Ａ，３Ｂに制動がかかることになる。発電により生じた電力は、オン状態となっている第１リレー１４ａを通じて、コンデンサ１６に蓄えられる。この状態においても、第３，第４リレーは、オフ状態のままである。リレー制御部１３は、電動モータ４Ａ，４Ｂの制動が終了した時点で、第１リレー１４ａを再びオフとする。 Further, the brake system of the mobile X-ray imaging apparatus 30 according to the first embodiment is a regenerative brake. That is, when the photographing engineer DR operates the driving handle 6, the relay control unit 13 is configured to cut off the electric power supplied to the electric motors 4A and 4B for traveling. FIG. 4 shows a state when the mobile radiography apparatus is instructed to decelerate. The relay control unit 13 turns on the first relay 14a and turns off the second relay 14b. Then, in each electric motor 4A, 4B, electric power generation is performed and braking is applied to each rear wheel 3A, 3B. The electric power generated by the power generation is stored in the capacitor 16 through the first relay 14a that is turned on. Even in this state, the third and fourth relays remain off. The relay control unit 13 turns off the first relay 14a again when braking of the electric motors 4A and 4B is completed.
　移動式放射線撮影装置は、病室に誘導され、そこで放射線透視画像の撮影が行われることになる。図５は、移動式放射線撮影装置にＸ線照射の指示が行われた状態を示している。撮影技師ＤＲが操作パネル９を通じてＸ線の照射開始の指示を行うと、リレー制御部１３は、第３リレー１４ｃ，第４リレー１４ｄをオンとし、バッテリー５，およびコンデンサ１６に蓄えられた電力をＸ線管電力供給部１１に出力させる。こうして、電動モータ４Ａ，４Ｂで発電された電力は、Ｘ線の照射に使用されるのである。 The mobile radiography apparatus is guided to a hospital room where radioscopy images are taken. FIG. 5 shows a state in which an instruction for X-ray irradiation is given to the mobile radiography apparatus. When the radiographer DR gives an instruction to start X-ray irradiation through the operation panel 9, the relay control unit 13 turns on the third relay 14 c and the fourth relay 14 d, and uses the electric power stored in the battery 5 and the capacitor 16. Output to the X-ray tube power supply unit 11. Thus, the electric power generated by the electric motors 4A and 4B is used for X-ray irradiation.
　なお、各走行用電動モータ４Ａ，４Ｂは、各後輪３Ａ，３Ｂの始動時においても発電を行う構成となっている。このとき生じた電力もＸ線管電力供給部１１に送出される。すなわち、各走行用電動モータ４Ａ，４Ｂは、台車１の速度変化が生じたときに発電を行い、生じた電力をＸ線管電力供給部１１に送出させるのである。なお、この速度変化は、撮影技師ＤＲが運転ハンドル６を通じて行われる能動的なものであり、前輪、後輪で生じる摩擦などにより台車１の速度が減衰する場合は含まれない。 The electric motors 4A and 4B for traveling are configured to generate power even when the rear wheels 3A and 3B are started. The electric power generated at this time is also sent to the X-ray tube power supply unit 11. In other words, each traveling electric motor 4A, 4B generates power when the speed change of the carriage 1 occurs, and sends the generated power to the X-ray tube power supply unit 11. Note that this speed change is an active one performed by the imaging engineer DR through the driving handle 6, and does not include a case where the speed of the carriage 1 is attenuated due to friction generated on the front wheels and the rear wheels.
　この様に、各走行用電動モータ４Ａ，４Ｂは、発電機として機能することもあれば、電動機として機能する場合もあるのである。なお、ブレーキが解除されるとリレー制御部１３は、再び第１リレー１４ａをオフとし、第２リレー１４ｂをオンとする。 Thus, each of the traveling electric motors 4A and 4B may function as a generator or may function as an electric motor. When the brake is released, the relay control unit 13 turns off the first relay 14a again and turns on the second relay 14b.
　続いて、以上に詳述した構成を有する実施例１の装置によるＸ線撮影の動作について説明する。まず、操作パネル９の入力操作で指定された撮影条件が撮影条件設定部１０に設定される。バッテリー５から電力が供給されるのに伴って、Ｘ線管２から被検体ＭにＸ線が照射され、カセッテのフィルムに被検体Ｍの透過Ｘ線像が写し込まれて、Ｘ線撮影は終了となる。このときバッテリー５が供給した電力には、各走行用電動モータ４Ａ，４Ｂが含まれている。 Subsequently, an operation of X-ray imaging by the apparatus of the first embodiment having the configuration detailed above will be described. First, shooting conditions specified by an input operation on the operation panel 9 are set in the shooting condition setting unit 10. As power is supplied from the battery 5, the subject M is irradiated with X-rays from the X-ray tube 2, and the transmitted X-ray image of the subject M is imprinted on the cassette film. End. The electric power supplied by the battery 5 at this time includes the electric motors 4A and 4B for traveling.
　以上のように、実施例１の構成によれば、台車１の速度変化が生じた場合、発電が行われる。この発電で生じた電力は、コンデンサ１６に蓄えられ、これがＸ線の照射に用いられる。つまり、本発明の移動式Ｘ線撮影装置３０は、台車１を移動させるに当たり、コンデンサ１６にある程度の電力が蓄積され続けることになる。こうして、バッテリー５に蓄えられた電力を温存することができ、充電に要する時間を短くすることができる。 As described above, according to the configuration of the first embodiment, power generation is performed when the speed change of the carriage 1 occurs. The electric power generated by this power generation is stored in the capacitor 16 and used for X-ray irradiation. That is, in the mobile X-ray imaging apparatus 30 of the present invention, a certain amount of electric power continues to be accumulated in the capacitor 16 when the carriage 1 is moved. In this way, the electric power stored in the battery 5 can be preserved, and the time required for charging can be shortened.
　また、実施例１の構成によれば、発電手段である走行用電動モータ４Ａ，４Ｂは、電動機としても作用する。すなわち、走行用電動モータ４Ａ，４Ｂは、モータ回転速度制御部１２にしたがって、動力を出力する。これにより、術者の指示に合わせて移動をアシストする移動式Ｘ線撮影装置３０が提供できる。 Further, according to the configuration of the first embodiment, the traveling electric motors 4A and 4B, which are power generation means, also function as electric motors. That is, the traveling electric motors 4 </ b> A and 4 </ b> B output power according to the motor rotation speed control unit 12. Thereby, the mobile X-ray imaging apparatus 30 which assists a movement according to an operator's instruction | indication can be provided.
　次に、実施例２に係る移動式Ｘ線撮影装置３０について説明する。実施例２に係る移動式Ｘ線撮影装置３０は、実施例１のような運転ハンドル６の操作に伴って各走行用電動モータ４Ａ，４Ｂが移動する構成とは異なり、アシスト機能を有しない手押し式の移動式Ｘ線撮影装置となっている。 Next, the mobile X-ray imaging apparatus 30 according to the second embodiment will be described. The mobile X-ray imaging apparatus 30 according to the second embodiment is different from the configuration in which each of the traveling electric motors 4A and 4B is moved in accordance with the operation of the driving handle 6 as in the first embodiment, and is a hand push without an assist function. Mobile X-ray imaging apparatus.
　実施例２の装置は、図６に示すように、実施例１におけるバッテリー５，およびに各走行用電動モータ４Ａ，４Ｂに代わって、コンデンサ１６，および制動用発電機１７Ａ，１７Ｂとの各々を有している。制動用発電機は、本発明の発電手段に相当し、コンデンサは、本発明の蓄積手段に相当する。なお、操作パネル９に関する構成は、実施例１のそれと同様であるので説明を省略する（図２参照）。 As shown in FIG. 6, the device of the second embodiment includes a capacitor 5 and braking generators 17 </ b> A and 17 </ b> B in place of the battery 5 and the electric motors 4 </ b> A and 4 </ b> B for the first embodiment. Have. The braking generator corresponds to the power generation means of the present invention, and the capacitor corresponds to the storage means of the present invention. In addition, since the structure regarding the operation panel 9 is the same as that of Example 1, description is abbreviate | omitted (refer FIG. 2).
　図６に示すように、右制動用発電機１７Ａの回転軸２４Ａは、右後輪３Ａに右クラッチ１８Ａを介して接続され、左制動用発電機１７Ｂの回転軸２４Ｂは、左後輪３Ｂに左クラッチ１８Ｂを介して接続されている。クラッチ制御部１９は、運転ハンドル６を通じて行われる撮影技師ＤＲに指示に基づいて、クラッチを制御し、発電機１７Ａ，１７Ｂと後輪３Ａ，３Ｂとの機械的な接続とその解除を行うものである。リレー制御部１３は、クラッチ制御部１９の制御状況に合わせてリレーのオン・オフを制御する。 As shown in FIG. 6, the rotating shaft 24A of the right braking generator 17A is connected to the right rear wheel 3A via the right clutch 18A, and the rotating shaft 24B of the left braking generator 17B is connected to the left rear wheel 3B. It is connected via the left clutch 18B. The clutch control unit 19 controls the clutch based on an instruction to the photographing engineer DR performed through the driving handle 6, and mechanically connects and releases the generators 17A, 17B and the rear wheels 3A, 3B. is there. The relay control unit 13 controls ON / OFF of the relay according to the control status of the clutch control unit 19.
　図６に示すように、コンデンサ１６は、電気プラグ１５に接続されており、電気プラグ１５をコンセントに差し込めば、コンデンサ１６が充電される構成となっている。コンデンサ１６は、第３リレー１４ｃを介してＸ線管電力供給部１１に接続されているとともに、第１リレー１４ａを介して発電機１７Ａ，１７Ｂに接続されている。発電機１７Ａ，１７Ｂの各々に第１リレー１４ａが１つずつ設けられている。 As shown in FIG. 6, the capacitor 16 is connected to the electric plug 15, and the capacitor 16 is charged by inserting the electric plug 15 into an outlet. The capacitor 16 is connected to the X-ray tube power supply unit 11 via the third relay 14c, and is connected to the generators 17A and 17B via the first relay 14a. One first relay 14a is provided for each of the generators 17A and 17B.
　実施例２の移動式Ｘ線撮影装置３０の移動が開始される場合、運転ハンドル６は、撮影技師ＤＲによる始動の指示をクラッチ制御部１９に送出する。クラッチ制御部１９は、右クラッチ１８Ａ，および左クラッチ１８Ｂを操作して、後輪３Ａ，３Ｂと制動用発電機１７Ａ，１７Ｂの動力的な接続を切断する。すると、各後輪３Ａ，３Ｂは、軽やかに回転するようになり、撮影技師ＤＲが移動式Ｘ線撮影装置３０を難なく移動させることができる。この時点では、第１リレー１４ａ，第３リレー１４ｃは共にオフである。 When the movement of the mobile X-ray imaging apparatus 30 according to the second embodiment is started, the driving handle 6 sends a start instruction by the imaging engineer DR to the clutch control unit 19. The clutch control unit 19 operates the right clutch 18A and the left clutch 18B to disconnect the dynamic connection between the rear wheels 3A and 3B and the braking generators 17A and 17B. Then, each rear wheel 3A, 3B comes to rotate lightly, and the radiographer DR can move the mobile X-ray imaging apparatus 30 without difficulty. At this time, both the first relay 14a and the third relay 14c are off.
　逆に、移動式Ｘ線撮影装置３０が減速される場合、運転ハンドル６は、撮影技師ＤＲによる減速の指示をクラッチ制御部１９に送出する。クラッチ制御部１９は、右クラッチ１８Ａ，および左クラッチ１８Ｂを操作して、後輪３Ａ，３Ｂと各制動用発電機１７Ａ，１７Ｂの動力的に接続させる。すると、各後輪３Ａ，３Ｂの回転に制動がかかり、移動式Ｘ線撮影装置３０は、減速する。 Conversely, when the mobile X-ray imaging apparatus 30 is decelerated, the driving handle 6 sends an instruction for deceleration by the imaging engineer DR to the clutch control unit 19. The clutch control unit 19 operates the right clutch 18A and the left clutch 18B to motively connect the rear wheels 3A and 3B and the braking generators 17A and 17B. Then, braking is applied to the rotation of each of the rear wheels 3A and 3B, and the mobile X-ray imaging apparatus 30 decelerates.
　図７は、移動式Ｘ線撮影装置が減速されているときの各部の電気的な接続状況を示している。リレー制御部１３は、クラッチの動力的な接続に伴って、第１リレー１４ａをオンとする。一方、各制動用発電機１７Ａ，１７Ｂでは電気が発生する。この電気は第１リレー１４ａを通じてコンデンサ１６に送出され、そこで蓄積される。リレー制御部１３は、各制動用発電機１７Ａ，１７Ｂの制動が終了した時点で、第１リレー１４ａを再びオフとする。 FIG. 7 shows the electrical connection status of each part when the mobile X-ray imaging apparatus is decelerated. The relay control unit 13 turns on the first relay 14a in accordance with the dynamic connection of the clutch. On the other hand, electricity is generated in each of the braking generators 17A and 17B. This electricity is sent to the capacitor 16 through the first relay 14a and stored there. The relay control unit 13 turns off the first relay 14a again when the braking of the braking generators 17A and 17B is completed.
　移動式放射線撮影装置は、病室に誘導され、そこで放射線透視画像の撮影が行われることになる。図８は、移動式放射線撮影装置にＸ線照射の指示が行われた状態を示している。撮影技師ＤＲが操作パネル９を通じてＸ線の照射開始の指示を行うと、リレー制御部１３は、第３リレー１４ｃをオンとし、コンデンサ１６に蓄えられた電力をＸ線管電力供給部１１に出力させる。こうして、電動モータ４Ａ，４Ｂで発電された電力は、Ｘ線の照射に使用されるのである。なお、コンデンサに１６に蓄えられた電力が不足しているときは、Ｘ線照射に先立って、電気プラグ１５を通じて、コンデンサ１６に充電を追加的に行っておくこともできる。 The mobile radiography apparatus is guided to a hospital room where radioscopy images are taken. FIG. 8 shows a state where an instruction for X-ray irradiation is given to the mobile radiography apparatus. When the radiographer DR gives an instruction to start X-ray irradiation through the operation panel 9, the relay control unit 13 turns on the third relay 14 c and outputs the electric power stored in the capacitor 16 to the X-ray tube power supply unit 11. Let Thus, the electric power generated by the electric motors 4A and 4B is used for X-ray irradiation. In addition, when the electric power stored in the capacitor 16 is insufficient, the capacitor 16 can be additionally charged through the electric plug 15 prior to the X-ray irradiation.
　以上のように、実施例２の構成によれば、各制動用発電機１７Ａ，１７Ｂは、各クラッチ１８Ａ，１８Ｂによって切り離される。この構成によれば、アシスト機能のない手動の装置において、発電機能を有する移動式Ｘ線撮影装置３０を提供することができる。すなわち、各後輪３Ａ，３Ｂと各制動用発電機１７Ａ，１７Ｂとを接続することによって、各後輪３Ａ，３Ｂに制動がかかるとともに電気が生じる。また、各後輪３Ａ，３Ｂと各制動用発電機１７Ａ，１７Ｂを切り離すことによって、各後輪３Ａ，３Ｂが自由に回転するようになる。こうして、実施例２の構成によれば、各後輪３Ａ，３Ｂの制動に際して、発電を行うことができる。そして、Ｘ線を照射する際、外部電源からコンデンサ１６に電力が供給されて、コンデンサ１６は、改めて電気の蓄積を行うことになる。この際、外部電源から電力が供給される前にある程度の電力がコンデンサ１６に蓄えられているのであるから、外部電源による蓄電に係る時間が短くなり、直ちにＸ線が照射できる移動式Ｘ線撮影装置３０が提供できる。 As described above, according to the configuration of the second embodiment, the braking generators 17A and 17B are disconnected by the clutches 18A and 18B. According to this configuration, the mobile X-ray imaging apparatus 30 having a power generation function can be provided in a manual apparatus having no assist function. That is, by connecting the rear wheels 3A, 3B and the braking generators 17A, 17B, braking is applied to the rear wheels 3A, 3B and electricity is generated. Further, by separating the rear wheels 3A and 3B from the braking generators 17A and 17B, the rear wheels 3A and 3B can freely rotate. Thus, according to the configuration of the second embodiment, power generation can be performed when braking the rear wheels 3A and 3B. When X-rays are irradiated, power is supplied to the capacitor 16 from an external power source, and the capacitor 16 again accumulates electricity. At this time, since a certain amount of power is stored in the capacitor 16 before power is supplied from the external power source, the time required for power storage by the external power source is shortened, and mobile X-ray imaging that can immediately irradiate X-rays. An apparatus 30 can be provided.
　次に、実施例３に係る移動式Ｘ線撮影装置３０について説明する。実施例３に係る移動式Ｘ線撮影装置３０は、図９に示すように実施例１におけるバッテリー５，およびに各走行用電動モータ４Ａ，４Ｂに代わって、コンデンサ１６，および各制動用発電機１７Ａ，１７Ｂとの各々を有している。また、実施例３に係る移動式Ｘ線撮影装置３０は、いわゆる電磁ブレーキ２５Ａ，２５Ｂを備えている。ブレーキ制御部２０は、本発明の発電機制御手段に相当し、電磁ブレーキは、本発明の制動手段に相当する。ブレーキ制御部２０は、電磁ブレーキを制御する目的で設けられている。リレー制御部１３は、リレーのオン・オフを制御するものである。なお、操作パネル９に関する構成は、実施例１のそれと同様であるので説明を省略する（図２参照）。 Next, the mobile X-ray imaging apparatus 30 according to the third embodiment will be described. As shown in FIG. 9, the mobile X-ray imaging apparatus 30 according to the third embodiment includes a capacitor 16 and each braking generator in place of the battery 5 and the traveling electric motors 4A and 4B in the first embodiment. 17A and 17B. Moreover, the mobile X-ray imaging apparatus 30 according to the third embodiment includes so-called electromagnetic brakes 25A and 25B. The brake control unit 20 corresponds to the generator control means of the present invention, and the electromagnetic brake corresponds to the braking means of the present invention. The brake control unit 20 is provided for the purpose of controlling the electromagnetic brake. The relay control unit 13 controls ON / OFF of the relay. In addition, since the structure regarding the operation panel 9 is the same as that of Example 1, description is abbreviate | omitted (refer FIG. 2).
　後輪３Ａの構成について説明する。右後輪３Ａは、図１０に示すように常に右制動用発電機１７Ａの回転軸２４Ａに接続されている。この回転軸２４Ａの回転を制動する構成として、回転軸２４Ａに固定され、これとともに回転するホイール２３Ａと、ホイール２３Ａを囲むように設けられた電磁シュー２１Ａと、電磁シュー２１Ａに磁力を供給する電磁力発生部２６Ａとが備えられている。ホイール２３Ａと電磁シュー２１Ａとの間には、隙間が設けられている。なお、ホイール２３Ａは、磁性を有している。この各部２１Ａ，２３Ａ，２５Ａが図５における右電磁ブレーキ２５Ａである。そして、左電磁ブレーキ２５Ｂは、右電磁ブレーキ２５Ａと同様な構成となっている。 The configuration of the rear wheel 3A will be described. As shown in FIG. 10, the right rear wheel 3A is always connected to the rotary shaft 24A of the right braking generator 17A. As a configuration for braking the rotation of the rotating shaft 24A, a wheel 23A that is fixed to the rotating shaft 24A and rotates therewith, an electromagnetic shoe 21A that is provided so as to surround the wheel 23A, and an electromagnetic that supplies magnetic force to the electromagnetic shoe 21A. And a force generator 26A. A gap is provided between the wheel 23A and the electromagnetic shoe 21A. The wheel 23A has magnetism. These portions 21A, 23A, and 25A are the right electromagnetic brake 25A in FIG. The left electromagnetic brake 25B has the same configuration as the right electromagnetic brake 25A.
　実施例３の移動式Ｘ線撮影装置３０が始動される場合、運転ハンドル６は、撮影技師ＤＲによる始動の指示をブレーキ制御部２０とに送出する。ブレーキ制御部２０は、電磁力発生部２６Ａの電力の供給を遮断する。すると、右後輪３Ａは、ブレーキが解除された状態となる。これと同時に、ブレーキ制御部２０は、左後輪３Ｂのブレーキも解除する。これにより、後輪３Ａ，３Ｂは軽やかに回転するようになり、撮影技師ＤＲが移動式Ｘ線撮影装置３０を難なく移動させることができる。 When the mobile X-ray imaging apparatus 30 according to the third embodiment is started, the operation handle 6 sends an instruction to start by the imaging engineer DR to the brake control unit 20. The brake control unit 20 cuts off the supply of electric power from the electromagnetic force generation unit 26A. Then, the right rear wheel 3A is in a state where the brake is released. At the same time, the brake control unit 20 releases the brake of the left rear wheel 3B. As a result, the rear wheels 3A and 3B rotate lightly, and the imaging technician DR can move the mobile X-ray imaging apparatus 30 without difficulty.
　逆に、移動式Ｘ線撮影装置３０が減速される場合、運転ハンドル６は、撮影技師ＤＲによる減速の指示をブレーキ制御部２０に送出する（図９参照）。ブレーキ制御部２０は、電磁力発生部２６Ａに電力を供給することで、電磁シュー２１Ａに磁力を発生させる。すると、電磁シュー２１Ａは、自由に回転していたホイール２３Ａに引き付けられる。電磁シュー２１Ａは、ホイール２３Ａに引き付けられてこれに接触し、ホイール２３Ａの回転に制動がかかる。これにともなって回転軸２４Ａの回転も制動されることになる。このとき、リレー制御部１３は、第１リレー１４ａをオンとする。第３リレー１４ｃは、オフのままである。 Conversely, when the mobile X-ray imaging apparatus 30 is decelerated, the driving handle 6 sends an instruction of deceleration by the imaging engineer DR to the brake control unit 20 (see FIG. 9). The brake control unit 20 generates a magnetic force in the electromagnetic shoe 21A by supplying electric power to the electromagnetic force generation unit 26A. Then, the electromagnetic shoe 21A is attracted to the wheel 23A that has been freely rotated. The electromagnetic shoe 21A is attracted to and contacts the wheel 23A, and braking is applied to the rotation of the wheel 23A. Along with this, the rotation of the rotating shaft 24A is also braked. At this time, the relay control unit 13 turns on the first relay 14a. The third relay 14c remains off.
　ホイール２３Ａが磁気的に制動されると、右制動用発電機１７Ａは負荷がかかった状態となり、これに伴って回転軸２４に制動がかかり、右制動用発電機１７Ａの回転軸の速度変化により、右制動用発電機１７Ａは発電を開始する。このとき右制動用発電機１７Ａで生じた電力は、第１リレー１４ａを通じてコンデンサ１６に蓄積される（図９参照）。 When the wheel 23A is magnetically braked, the right braking generator 17A is loaded, and accordingly, the rotating shaft 24 is braked, and the speed change of the rotating shaft of the right braking generator 17A is caused. The right braking generator 17A starts power generation. At this time, the electric power generated by the right braking generator 17A is accumulated in the capacitor 16 through the first relay 14a (see FIG. 9).
　なお、これと同時に、ブレーキ制御部２０は、左後輪３Ｂのブレーキもかける。これにより、後輪３Ａ，３Ｂは同時に制動されるようになり、撮影技師ＤＲが移動式Ｘ線撮影装置３０を難なく停止させることができる。左制動用発電機１７Ｂで生じた電力は、第１リレー１４ａを通じてコンデンサ１６に蓄えられる。このコンデンサ１６で蓄積された電気は、Ｘ線管２のＸ線照射に用いられる。この場合、リレー制御部１３は、操作パネル９の指示に従い、第１リレー１４ａをオフとし、第３リレー１４ｃをオンとしている（図９参照）。リレー制御部１３は、各制動用発電機１７Ａ，１７Ｂの制動が終了した時点で、第１リレー１４ａを再びオフとする。 At the same time, the brake control unit 20 applies the brake of the left rear wheel 3B. As a result, the rear wheels 3A and 3B are braked simultaneously, and the radiographer DR can stop the mobile X-ray imaging apparatus 30 without difficulty. The electric power generated by the left braking generator 17B is stored in the capacitor 16 through the first relay 14a. The electricity accumulated in the capacitor 16 is used for X-ray irradiation of the X-ray tube 2. In this case, the relay control unit 13 turns off the first relay 14a and turns on the third relay 14c according to the instruction of the operation panel 9 (see FIG. 9). The relay control unit 13 turns off the first relay 14a again when the braking of the braking generators 17A and 17B is completed.
　以上のように、実施例３は、アシスト機能のない手動の装置における１形態を示している。すなわち、各後輪３Ａ，３Ｂを回転させる回転軸２４には各電磁ブレーキ２５Ａ，２５Ｂが設けられいる。この様にすることで、各後輪３Ａ，３Ｂが制動されるのに合わせて各制動用発電機１７Ａ，１７Ｂは発電を行うことができるのである。そして、Ｘ線を照射する際、外部電源からコンデンサ１６に電力が供給されて、コンデンサ１６は、改めて電気の蓄積を行うことになる。この際、外部電源から電力が供給される前にある程度の電力がコンデンサ１６に蓄えられているのであるから、外部電源による蓄電に係る時間が短くなり、直ちにＸ線が照射できる移動式Ｘ線撮影装置３０が提供できる。 As described above, the third embodiment shows one form of a manual device without an assist function. That is, the electromagnetic brakes 25A and 25B are provided on the rotating shaft 24 that rotates the rear wheels 3A and 3B. In this way, the braking generators 17A and 17B can generate electric power as the rear wheels 3A and 3B are braked. When X-rays are irradiated, power is supplied to the capacitor 16 from an external power source, and the capacitor 16 again accumulates electricity. At this time, since a certain amount of power is stored in the capacitor 16 before power is supplied from the external power source, the time required for power storage by the external power source is shortened, and mobile X-ray imaging that can immediately irradiate X-rays. An apparatus 30 can be provided.
　本発明は、上述の構成に限られず、下記のように変形実施することができる。 The present invention is not limited to the above-described configuration, and can be modified as follows.
　（１）実施例１の構成において、バッテリー５の電源を一時的にコンデンサ１６に蓄える構成としてもよい。この場合、バッテリー５は、図１１に示すように第５リレー１４ｅを介してコンデンサ１６に接続されている。Ｘ線照射の前段階において、第１リレー１４ａ、第２リレー１４ｂ、第３リレー１４ｃ、第４リレー１４ｄのいずれもが、オフの状態で、第５リレー１４ｅがオンされ、コンデンサ１６の追加的な充電が行われる。Ｘ線照射を行うときは、第５リレー１４ｅはオフとされる。この様な第５リレー１４ｅの制御は、リレー制御部１３が行う。撮影技師ＤＲは、操作パネル９を通じて、リレー制御部１３に第５リレー１４ｅのオン・オフを指示することができる。 (1) In the configuration of the first embodiment, the power source of the battery 5 may be temporarily stored in the capacitor 16. In this case, the battery 5 is connected to the capacitor 16 via the fifth relay 14e as shown in FIG. In the previous stage of X-ray irradiation, the fifth relay 14e is turned on while all of the first relay 14a, the second relay 14b, the third relay 14c, and the fourth relay 14d are turned off, and the capacitor 16 is additionally provided. Is charged. When X-ray irradiation is performed, the fifth relay 14e is turned off. Such control of the fifth relay 14e is performed by the relay control unit 13. The imaging engineer DR can instruct the relay control unit 13 to turn on / off the fifth relay 14e through the operation panel 9.
　上述の構成によれば、Ｘ線管２の照射をより確実に行うことができる。すなわち、蓄積手段は、各後輪３Ａ，３Ｂを駆動させるバッテリー５と、Ｘ線管２に電力を供給するコンデンサ１６とを有している。これにより、バッテリー５の電圧が低下したとしても、Ｘ線管２は、バッテリー５およびコンデンサ１６から電力を供給されるので、Ｘ線管２は、確実に所定の線量のＸ線を照射することができる。 According to the above-described configuration, the X-ray tube 2 can be irradiated more reliably. That is, the storage means includes a battery 5 that drives each of the rear wheels 3 </ b> A and 3 </ b> B and a capacitor 16 that supplies power to the X-ray tube 2. Thereby, even if the voltage of the battery 5 decreases, the X-ray tube 2 is supplied with power from the battery 5 and the capacitor 16, so that the X-ray tube 2 reliably irradiates a predetermined dose of X-rays. Can do.
　また、上述の構成によれば、各後輪３Ａ，３Ｂによって発電された電力を確実にＸ線管２の照射に用いることができる。一度に大量の電力を消耗するのは、台車１の駆動ではなく、Ｘ線管２がＸ線を照射した時点である。上述のように発電された電力がコンデンサ１６に蓄積される構成とすれば、一度に大量の電力を消耗するＸ線の照射に優先して発電した電力を供給する構成となっているので、より速やかにＸ線が照射できる移動式Ｘ線撮影装置３０が提供できる。 In addition, according to the above-described configuration, the power generated by each of the rear wheels 3A and 3B can be reliably used for irradiation of the X-ray tube 2. A large amount of power is consumed at a time when the X-ray tube 2 irradiates X-rays, not driving the carriage 1. If the generated power is stored in the capacitor 16 as described above, it is configured to supply the generated power in preference to X-ray irradiation that consumes a large amount of power at a time. A mobile X-ray imaging apparatus 30 capable of promptly irradiating X-rays can be provided.
　（２）実施例１の構成において、コンデンサ１６を設けない構成としてもよい。この場合、第１リレー１４ａは、図１２に示すようにコンデンサ１６の代わりにバッテリー５に接続されている。そして、第４リレー１４ｄは設けられていない。図１３は、移動式放射線撮影装置が走行中の状態を示している。このとき、第１リレー１４ａはオフである。その他のリレーの様子は図３の説明と同様である。図１４は、移動式放射線撮影装置にブレーキがかけられたときの状態を示している。このとき、第１リレー１４ａはオンであり、電動モータで発電された電力は第１リレー１４ａを通じてバッテリー５に蓄えられる。 (2) In the configuration of the first embodiment, the capacitor 16 may not be provided. In this case, the first relay 14a is connected to the battery 5 instead of the capacitor 16 as shown in FIG. The fourth relay 14d is not provided. FIG. 13 shows a state in which the mobile radiography apparatus is traveling. At this time, the first relay 14a is off. Other aspects of the relay are the same as described in FIG. FIG. 14 shows a state when the mobile radiography apparatus is braked. At this time, the first relay 14a is on, and the electric power generated by the electric motor is stored in the battery 5 through the first relay 14a.
　図１５は、移動式放射線撮影装置がＸ線を照射している状態を示している。この場合、第１リレー１４ａは、オフである。その他のリレーの様子は図５の説明と同様である。 FIG. 15 shows a state in which the mobile radiography apparatus irradiates X-rays. In this case, the first relay 14a is off. The other relays are the same as described in FIG.
　実施例２，３の構成において、図１６に示すようにコンデンサー１６の代わりにバッテリー５を採用することもできる。動作としては、図７～図８で説明した動作と同様であるので、説明を省略する。 In the configuration of the second and third embodiments, the battery 5 can be used instead of the capacitor 16 as shown in FIG. Since the operation is the same as the operation described with reference to FIGS. 7 to 8, the description thereof will be omitted.
　以上のように、本発明は、医用機器に適している。 As described above, the present invention is suitable for medical devices.

Claims (8)

  1. 　移動可能な車輪を備えた台車と、
    　電力を供給する蓄積手段と、
    　前記蓄積手段から電力が供給されるとともに放射線を照射する放射線源と、
    　前記台車の車輪に接続されるとともに前記台車の速度変化が生じたときに発電を行い、生じた電力を前記蓄積手段に蓄電させる発電手段とを備えることを特徴とする移動式放射線撮影装置。     A carriage with movable wheels;
    Storage means for supplying power;
    A radiation source that is supplied with power from the storage means and emits radiation; and
    A mobile radiography apparatus comprising: power generation means connected to wheels of the carriage and generating power when a speed change of the carriage occurs, and storing the generated power in the storage means.
  2. 　請求項１に記載の移動式放射線撮影装置において、
    　前記発電手段は、前記蓄積手段から電力を供給されることにより電動機として作用する構成となっており、
    　前記発電手段の電動機としての駆動を制御する駆動制御手段を更に備え、
    　前記発電手段は、前記駆動制御手段の制御にしたがって、前記車輪を駆動することを特徴とする移動式放射線撮影装置。     The mobile radiographic apparatus according to claim 1,
    The power generation means is configured to act as an electric motor by being supplied with electric power from the storage means,
    Drive control means for controlling the drive of the power generation means as an electric motor;
    The mobile radiographic apparatus characterized in that the power generation means drives the wheels according to the control of the drive control means.
  3. 　請求項２に記載の移動式放射線撮影装置において、
    　前記蓄積手段は、前記発電手段に電力を供給するバッテリーを備えていることを特徴とする移動式放射線撮影装置。     The mobile radiography apparatus according to claim 2,
    The mobile radiography apparatus, wherein the storage means includes a battery for supplying power to the power generation means.
  4. 　請求項２に記載の移動式放射線撮影装置において、
    　前記蓄積手段は、前記放射線源に電力を供給するコンデンサを備えていることを特徴とする移動式放射線撮影装置。     The mobile radiography apparatus according to claim 2,
    The mobile radiation imaging apparatus, wherein the storage means includes a capacitor for supplying power to the radiation source.
  5. 　請求項３に記載の移動式放射線撮影装置において、
    　前記発電手段は、前記バッテリーに電力を送出することを特徴とする移動式放射線撮影装置。     The mobile radiographic apparatus according to claim 3,
    The mobile radiographic apparatus characterized in that the power generation means sends electric power to the battery.
  6. 　請求項４に記載の移動式放射線撮影装置において、
    　前記発電手段は、前記コンデンサに電力を送出することを特徴とする移動式放射線撮影装置。     The mobile radiography apparatus according to claim 4, wherein
    The mobile radiation imaging apparatus, wherein the power generation means sends power to the capacitor.
  7. 　請求項１に記載の移動式放射線撮影装置において、
    　前記発電手段は、動力を入力する回転軸を有し、
    　前記回転軸は、クラッチを介して前記車輪に接続され、
    　前記クラッチが連結状態となることで前記回転軸の制動がかけられることを特徴とする移動式放射線撮影装置。     The mobile radiographic apparatus according to claim 1,
    The power generation means has a rotating shaft for inputting power,
    The rotating shaft is connected to the wheel via a clutch,
    The mobile radiographic apparatus, wherein the rotating shaft is braked when the clutch is in a connected state.
  8. 　請求項１に記載の移動式放射線撮影装置において、
    　前記発電手段は、動力を入力する回転軸を有し、
    　前記発電手段と前記蓄積手段との電気的な接続を制御する発電機制御手段と、
    　前記回転軸を制動する制動手段が設けられていることを特徴とする移動式放射線撮影装置。     The mobile radiographic apparatus according to claim 1,
    The power generation means has a rotating shaft for inputting power,
    Generator control means for controlling electrical connection between the power generation means and the storage means;
    A mobile radiographic apparatus characterized in that a braking means for braking the rotating shaft is provided.
PCT/JP2009/004296 2009-09-01 2009-09-01 Mobile radiation imaging device WO2011027381A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013169329A (en) * 2012-02-21 2013-09-02 Yoshida Dental Mfg Co Ltd X-ray imaging apparatus
JP2014132922A (en) * 2013-01-08 2014-07-24 Shimadzu Corp X-ray equipment

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JPH0370402A (en) * 1989-08-03 1991-03-26 Toyota Motor Corp Braking apparatus of electric automobile
JPH07149280A (en) * 1993-11-26 1995-06-13 Koyo Seiko Co Ltd Bicycle having electric motor
JPH10201007A (en) * 1997-01-16 1998-07-31 Nittetsu Semiconductor Kk Conveying robot
JP2008253762A (en) * 2007-03-30 2008-10-23 General Electric Co <Ge> Portable digital tomosynthesis imaging system and method

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JPH0370402A (en) * 1989-08-03 1991-03-26 Toyota Motor Corp Braking apparatus of electric automobile
JPH07149280A (en) * 1993-11-26 1995-06-13 Koyo Seiko Co Ltd Bicycle having electric motor
JPH10201007A (en) * 1997-01-16 1998-07-31 Nittetsu Semiconductor Kk Conveying robot
JP2008253762A (en) * 2007-03-30 2008-10-23 General Electric Co <Ge> Portable digital tomosynthesis imaging system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013169329A (en) * 2012-02-21 2013-09-02 Yoshida Dental Mfg Co Ltd X-ray imaging apparatus
JP2014132922A (en) * 2013-01-08 2014-07-24 Shimadzu Corp X-ray equipment

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