JP2009131413A - X-ray equipment for doctor's round - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide X-ray equipment for doctor's rounds, capable of solving a problem wherein a floor surface is injured by sudden braking of rear wheels. <P>SOLUTION: The X-ray equipment for doctor's rounds have two brake operating systems: a brake operating system for operating prescribed braking force H immediately when an obstacle detecting machine S detects an obstacle, and a braking system for operating a brake B by an operator when necessary. The brake B of the obstacle detecting machine S is the immediate braking operation with the prescribed braking force H, while the braking operation by the operator is such gradual braking operation that the brake is gradually operated and locked, and braking is repeated after the lock is slightly released. Accordingly, if the obstacle is detected by the obstacle detecting machine S, such a situation that a running cart 1 is braked at once by immediately operating the brake B can be prevented, and therefore, the running cart 1 will not collide with the obstacle. Even if the brake is operated by the operator, braking of the rear wheels 5 is gentle and the floor surface will not be injured either. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a round-trip X-ray imaging apparatus for irradiating and diagnosing, for example, patients who are sequentially hospitalized in a hospital room or the like.

In this type of X-ray imaging apparatus, a traveling carriage is used so that each patient's ward can be sequentially visited and diagnosed (see Patent Document 1). Furthermore, in this type of X-ray imaging apparatus, it is important to provide a brake for running, that is, for smoothing the running so as to keep the vehicle stationary.
By the way, the conventional traveling brake of the X-ray imaging apparatus has the following specifications.
The first specification is that the brake is activated when the operator of the round-trip X-ray imaging apparatus performs a brake operation.
In the second specification, when the obstacle detector provided in the front part of the traveling carriage detects an obstacle, the running of the apparatus is braked.
The third specification is prescribed in “IEC” and “JIS”, and has a holding force that keeps the balance at a predetermined inclination and posture. Here, “IEC” is an international organization that exists as a world authority to create international industrial standards and standards in all fields related to electrical technology, and is called “International Electrotechnical Commission” in Japanese.
JP 2004-121656 A

  In the conventional brake technology for traveling carts, the brake operating methods according to the above three specifications are all the same stopping method and operate instantaneously. In this case, the braking force that satisfies the second specification and the third specification is several times the first specification and the second specification. Is causing problems. In other words, when the brake is operated, the wheel surface is marked by abrupt friction between the wheel and the floor surface, which may impair the appearance of the floor surface, and if the floor surface is damaged, the floor surface will be uneven. It is not preferable for walking. The wheels on the traveling carriage side are also worn and smooth running is impossible. In addition, when the vehicle is moving backward, rapid braking may cause the front wheels to float due to inertia, and people and objects may be caught between the front wheels.

In order to solve the above problems, an X-ray imaging apparatus for round visits provided by the present invention includes a brake operating system that instantly activates a predetermined braking force when an obstacle detector detects an obstacle, and an operation If necessary, a brake operating system for operating the brake by operating the operating device is provided, and this is a basic feature of the present invention. In other words, the braking by the obstacle detector is an instantaneous braking operation with a predetermined braking force. On the other hand, when the operator operates the brake, the brake is gradually braked, and after locking, the brake is loosened and repeated again. Become.
Therefore, when the obstacle detector detects an obstacle, the traveling vehicle is instantaneously braked by operating the brake instantaneously, and a situation in which the traveling vehicle collides with the obstacle does not occur. On the other hand, when the operator operates the brake, the brake is gradually applied, and once locked, the brake is loosened and repeated again, so that the locked state does not occur. Therefore, the friction between the wheels of the traveling carriage and the floor surface is also reduced.

When the obstacle detector detects an obstacle, it is possible to prevent interference between the carriage and the obstacle by operating the brake instantaneously.
When the operator performs a brake operation, the brake is gradually performed, and after being locked, the brake is gradually released and then the brake is repeated again. Therefore, the brake is gradually performed. Therefore, it is possible to prevent wheel marks on the floor, scratches on the floor, and lifting of the front wheels.

  The present invention is characterized in that it employs a two-system method of generating an operation signal to the brake, a signal transmission system based on detection by an obstacle detector and a signal transmission system from an operating device operated by an operator. In the case of using a transmission system from an operating device by an operator, the brake force is characterized by a pulsation system. Therefore, in the present invention, a roundabout X-ray imaging apparatus having both these features is the best mode.

The embodiment provided by the present invention is as shown in FIGS.
FIG. 1 is a diagram showing an external appearance of a roundabout X-ray imaging apparatus, and FIG. 2 is a diagram showing a configuration of a drive unit of a traveling carriage, that is, a rotational drive mechanism and a brake mechanism of a rear wheel. FIG. 3 is a diagram schematically showing the whole of the round X-ray imaging apparatus mainly showing the signal system relating to the rotational drive mechanism and the brake mechanism. The configuration and operation of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing an external appearance of an X-ray imaging apparatus for round trips according to the present invention. Reference numeral 1 denotes a traveling carriage on which an X-ray imaging machine is installed, and a front wheel 4 and a rear wheel 5 are mounted on both sides, An X-ray tube 3 for irradiating X-rays via a support 2 is installed.
A handle 6 for pushing the traveling carriage 1 is installed at the upper rear part of the traveling carriage 1, and an operating device 7 is provided in the vicinity of the handle 6. This operating device 7 generates a signal for braking by an operator's operation, and is locked to a frame 6W on which the handle 6 is constructed. That is, a long hole 6H that locks the operating device 7 is formed in the frame 6W, and the long hole 6H is locked to be displaceable in the front-rear direction by an operator's manual operation.
Therefore, when the operator manually pulls the operating device 7, the operating force is transmitted through the wire 7W (see FIG. 3), and a signal for operating the brake is generated as described later.

  On the other hand, an obstacle detector S is installed at the forefront of FIG. This obstacle detector S detects, for example, the presence or absence of an obstacle by emitting infrared light, irradiating the obstacle ahead and receiving reflected light, or transmitting ultrasonic waves instead of infrared light. An instrument such as a system that detects the presence or absence of an obstacle by inputting sound waves is adopted. When the obstacle detector S detects an obstacle ahead in the traveling direction, the obstacle detector S generates a signal for operating the brake B (FIG. 3).

Next, the configuration of the travel drive and the brake of the traveling carriage 1 will be described. FIG. 2 is a view showing one (left side) of the state in which the rotational drive unit and the brake configuration of the rear wheel 5 in the traveling carriage 1 are installed in the machine base located at the bottom of the traveling carriage 1.
As shown in FIG. 2, a gear box G, an electric motor M, a brake B, and an encoder E are arranged in order from the rear wheel 5 to the right side, and the rotation with the rear wheel 5 connected so as to pass through them. A shaft 9 is arranged via a bearing 13.
The rotation shaft 9 is a rotation drive shaft of the rear wheel 5 and is connected to the electric motor M. The gear box G functions as a speed increaser that increases the speed of rotation of the rotary shaft 9.

  The brake B is composed of an electromagnet 15 fixedly installed on the machine base 18 and a rotating body 14 in which a section of the rotating shaft 9 is disposed at a rectangular shaft 19. In other words, a rotating body 14 that is slidable and integrally rotated with the angular shaft 19 is fitted into the angular shaft 19, and a concave portion 14 </ b> K that accommodates compression springs 17 is formed at a plurality of locations around the rotating body 14. Thus, the joining plate 16 is biased toward the fixed electromagnet 15 by the elasticity of the spring 17. The state of FIG. 2 is a state where the electromagnetic force of the electromagnet 15 is not activated, and even if the rotating body 14 rotates, the joining plate 16 only slides on the surface of the electromagnet 15, but the brake B operates and the electromagnetic force When the joining plate 16 is attracted to the electromagnet 15 against the elasticity of the spring 17, the joining force with the electromagnet 15 is increased, the rotating body 14 is braked and stopped, and the electromagnetic force is erased. The brake function is lost.

The encoder E measures the amount of rotation of the rotary shaft 9 and transmits the result to a brake control circuit C1 described later. The mechanism for rotational driving and braking of the rear wheel 5 shown in FIG. 2 has been described. However, the mechanism shown in FIG. 2 is similarly arranged on the right side, and the two rear wheels are synchronized. It is configured to be driven and braked. Reference numeral 20 denotes a turntable of the encoder E, and reference numeral 21 denotes a rotation detector that detects the amount of rotation of the turntable 20.
FIG. 3 is a diagram showing a state in which the above-described configuration is connected and installed on the machine base portion 18 (not shown) of the traveling carriage 1 around the support base K. In FIG. 2, parts denoted by the same reference numerals as those in FIG. 1 are the same parts as in FIG. Further, in FIG. 3, parts denoted by the same reference numerals as those in FIGS. 1 and 2 are the same parts as in FIGS. 1 and 2, and detailed descriptions thereof are also omitted.

The operation of the above-described embodiment, particularly the brake operation, will be described below with reference to FIG.
First, when the operator grasps the handle 6 of the round-trip X-ray imaging apparatus and travels forward, when the obstacle detector S detects an obstacle, this detection signal is transmitted to the brake control circuit C1 and the brake B By controlling the voltage applied to the motor M, the motor M is instantaneously braked and the apparatus is stopped to prevent interference with obstacles. That is, in this case, as shown in FIG. 4A, the braking force rapidly increases, and a predetermined braking force H is activated after a certain time. L1 indicates this brake signal system, and is input to both brakes B so that both brakes B are operated simultaneously. The brake B is configured to have a holding force that maintains stability at a tilt of 10 degrees in the running posture.

  Next, when the operator stops traveling if necessary, the operator holds the operating device 7 installed in the vicinity of the handle 6 of the traveling carriage 1. By this operation, a signal is input to the brake control circuit C2 through the wire 7W, the brake signal system L2 is generated, and a pulsating brake force is activated as shown in FIG. In this case, the maximum value of the predetermined braking force H is set to the same value as the predetermined braking force H when the obstacle detector S detects an obstacle. The pulsating braking force may be initially equal to the predetermined braking force H, but the subsequent pulsating maximum braking force may be reduced, and is not limited to a constant value. When this operator operates the operating device 7, the voltage applied to the brake B is controlled by the information Z from the encoder E, and as a result, the electric motor M is gradually braked by the brake signal system L2, and the rear wheels are When locked, it is slightly loosened and again braked, for example, 2 seconds after locking, and this braking is repeated several times, for example, 5-6 times, and finally stopped. In FIG. 3, V indicates a power supply system that supplies power to the motor M via the controller 8.

  The features of the round-trip X-ray imaging apparatus provided by the present invention are as described in detail above, but are not limited to the above and illustrated examples. For example, the place where the obstacle detector S is installed may be an X-ray tube part or may be attached to the support column 2. Further, although the rear wheel drive mechanism is shown in FIG. 2, the arrangement of the electric motor M and the brake B may be changed. In short, it is only necessary to perform two types of brake braking and is limited to the detailed configuration. It is not something.

  FIG. 3 shows an example of the number of control circuits and the arrangement of signal systems, and the present invention is not limited to the illustrated example. One control circuit can be used. The configuration of the operator 7 by the operator can be changed to a push button or lever system, or can be a rotary handle, and is not limited to the illustrated example. The shape of the traveling carriage 1 is not limited to the illustrated example, and may be various forms that are optimal for round trips. The present invention includes all these modifications.

It is a figure which shows the external appearance of the X-ray imaging apparatus for round trips which this invention provides. It is a figure which shows the structure in connection with the drive system of the X-ray imaging apparatus for round trips which this invention provides. It is a figure which mainly shows the signal transmission system of the X-ray imaging apparatus for round trips which this invention provides. It is a figure which shows the system of the braking force which is the characteristics of this invention, (A) is a figure which shows the brake control characteristic when an obstacle detector detects an obstacle, (B) is a case where an operator brakes. It is a figure which shows a brake control characteristic.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling carriage 2 Support | pillar 3 X-ray tube 4 Front wheel 5 Rear wheel 6 Handle 6H Long hole 6W Frame 7 Operator 7W Wire 8 Controller 9 Rotating shaft 13 Bearing 14 Rotating body 14K Concavity 15 Electromagnet 16 Joining plate 17 Spring 18 Machine stand Section 19 Square shaft 20 Turntable 21 Rotation detector B Brake C1 Brake control circuit C2 Brake control circuit E Encoder G Gearbox H Predetermined braking force K Support base L1 Brake signal system L2 Brake signal system M Electric motor S Obstacle detector V Power supply system Z Information from encoder E

Claims (3)

  In a round X-ray imaging apparatus comprising a wheel, an electric motor for rotationally driving the wheel, and a brake for stopping the rotation of the wheel, and an X-ray imaging apparatus installed on a travelable carriage, the carriage is attached to the front of the carriage. An obstacle detector that emits a brake actuation signal when an obstacle to the vehicle is detected, an operating device that generates a brake actuation signal by the operation of the operator of the traveling carriage, An X-ray imaging apparatus for round visits characterized by comprising brake control means for controlling a brake.   2. The round X-ray apparatus according to claim 1, wherein the brake control means activates a predetermined braking force to the brake by a signal generated by detection by an obstacle detector.   The brake control means controls the brake to operate a predetermined brake force in response to a signal from an operating device operated by an operator, release the lock when the wheel is locked, and operate the predetermined brake force again. The X-ray imaging apparatus for round visits according to claim 1.

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