JPH0355036A - Apparatus for revolution of support in x-ray photographing apparatus - Google Patents

Abstract

PURPOSE:To retract a photographing apparatus part to a safe position by providing 1st and 2nd electromagnetic brakes preventing a turn table from rotation respectively when electricity is supplied or stopped and bringing the latter in such a condition that the turn table can be turned by applying a proper force while the brake is worked. CONSTITUTION:In a supporting and turning apparatus 30, a turn table 32 is provided with free rotation on a base member 31 and the 1st electromagnetic brake 40 and 2nd electromagnetic brake 50 stopping turning of the turn table are furnished thereon. 1st brake prevents the turn table from turning by supplying electricity. The 2nd brake prevents the turn table from turning by stopping electricity in the electromagnet. An energized force of a spring 53 is set in such a way that the turn table can be turned if it is forcibly turned by a proper force and the position can be held if the outer force is removed. When the electric current stops, it is thereby possible that the turn table is prevented from turning by means of the 2nd brake and while the brake works, an arm, an X-ray tube and an X-ray treating part can be retracted to a safe position.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a column rotation device for a column that pivots and supports an arm provided with an X-ray tube and an X-ray processing section in an XwA imaging apparatus.

(Prior Art) Conventionally, an X-ray photographing apparatus has been provided in which a support is rotatably erected via a support rotation device, and an arm equipped with an X-ray tube and an X-ray processing unit is connected to the support. The column rotation device is equipped with an electromagnetic brake that prevents the column from turning by passing an electric current through it, or an electromagnetic brake that prevents the column from turning by turning off the electric current, and the brake is activated by turning the power on or off. (Problem to be Solved by the Invention) However, in the above-mentioned conventional prop rotation device, the electromagnetic brake does not operate at all in the event of a power outage. An electromagnetic brake that prevents rotation of the support column, that is, the arm, X-ray tube and With the electromagnetic brake that prevents the prop from rotating by cutting off the current, the prop is prevented from rotating, and the arm, X-ray tube, and X-ray processing section cannot be rotated, and the arm, X-ray tube, and There was a problem in that the line processing section could not be evacuated to a safe position.

(Means for Solving the Problems) In the column rotation device in the X-ray imaging apparatus of the present invention, the column is erected via the column rotation device so as to be freely pivotable, and the column is equipped with an X-ray tube and an X-ray processing section. In an X-ray imaging apparatus in which a turntable is rotatably supported on a base member of the support rotation device, the base member or the turntable is configured to rotate the turntable when energized. A first electromagnetic brake is provided to prevent rotation of the turntable when the current is cut off, and a second electromagnetic brake is provided to prevent rotation of the turntable when the electric current is cut off. It is something that has been admonished.

(Function) In normal cases, the first electromagnetic brake and the second electromagnetic brake prevent the turntable from turning, and
In the event of a power outage, the second electromagnetic brake prevents the turntable from turning. Here, the second electromagnetic brake is configured such that the turntable can be rotated by applying an appropriate force to the turntable in the brake operating state, so that even if the second electromagnetic brake is activated during a power outage, the arm and the The X-ray tube and the X-ray processing section can be moved to a safe position and held at that safe position.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 4 shows the overall structure of the X-ray imaging apparatus.

The X-ray imaging device includes a first unit A installed on the ceiling and equipped with a No. IX scarlet tube 11 and a No. The second unit B includes a processing section 22, and a bed C disposed on the floor.

The first unit I-A includes a traveling cart 15 that can freely travel along a guide member 13 laid in an appropriate direction on the ceiling.
An arm support member l6 rotatably provided at the bottom of the traveling cart 15, an arm 17 supported by the arm support member 16, and a first X rotatably provided at both ends of the arm l7. It is composed of a ray tube 11 and an L-th X-ray processing section 12.

The arm 17 has a T-shaped longitudinal section and is curved in the longitudinal direction, and has the I-th X-ray tube I1 installed at one end and the t-th X-ray processing section 1 at the other end.
2 is provided so as to face the first X-ray tube 1l. This arm 17 is supported movably in the longitudinal direction by an arm support device 18 provided on the arm support member 16, and by sliding the arm 17 in the longitudinal direction, can be changed at any time.

The IX-ray tube 11 is for irradiating the object to be inspected with X-rays, and the irradiated X-rays are transmitted through the object to be inspected and received by the L-th X-ray processing section 12. Information from the L-th X-ray processing section 12 is displayed on the TV monitor.

Note that a film for X-ray photography may be stored in the IX-ray processing section 12, and the X-rays irradiated from the L-X-ray tube II may be photographed on the film.

The second unit B includes a column 23 that is rotatably installed on the floor via a column rotation device 30, an arm support member 25 provided on the column 23, and an arm supported by the arm support member 25. 26, a second X-ray tube 21 and a second X-ray processing section 22, which are rotatably provided at both ends of the arm 26.

Like the arm 17, the arm 26 is provided on the arm support member 25 via an arm support device l8 so as to be freely movable in the longitudinal direction. Further, the second X-ray tube 2l and the second X-ray processing section 22 provided at both ends of the arm 26 are also configured in the same manner as the IX-ray tube l1 and the IX-ray processing section 12.

As described above, in the X-ray imaging apparatus of this example, the first unit A performs X-ray imaging mainly in the lateral direction on the object to be inspected on the henoto C, and the second unit B mainly performs X-ray imaging in the vertical direction. It is designed to perform X-ray photography.

As shown in FIGS. 1 and 2, the column turning device 30 includes a turntable 32 mounted on a base member 31 fixed to the floor so as to be rotatable on a horizontal plane via a bearing 33. , a first electromagnetic brake 40 for stopping the rotation of the turntable 32 and a second electromagnetic brake 40 for stopping the rotation of the turntable 32.
An electromagnetic brake 50 is provided.

A plurality of the first electromagnetic brakes 40 (seven in this example) are provided on the peripheral edge of the turntable 32.
1, and is configured to prevent rotation of the turntable 32 by adhering the suction portion 4l to the upper surface of the base member 32 when energized.

In the second electromagnetic brake 50, as shown in FIG. An electromagnet (not shown) built into the brake body 51 is provided so as to come into contact with the upper surface of the base 3l due to the biasing force of a spring 53 provided therein.
is energized to lift the abutting portion 52 upward against the biasing force of the spring 53, thereby creating a gap between the abutting portion 52 and the upper surface of the base member 3l and bringing the brake into a released state. Moreover, this second electromagnetic brake 50 is activated by the urging force of the spring 53 by cutting off the energization state of the electromagnet.
2 onto the top surface of the base member 3l and turntable 3.
Prevent rotation of 2. Here, the urging force of the spring 53 that presses the contact portion 52 against the upper surface of the base member 31 can be rotated by forcibly turning the turntable 32 with an appropriate force, and the position can be maintained if no force is applied. It is set up so that it can be done.

In this way, the first electromagnetic brake 40 and the second electromagnetic brake 5
0, the turntable 3 is operated by the first electromagnetic brake 40 and the second electromagnetic brake 50 under normal conditions.
2 rotation can be prevented, and in the event of a power outage, the rotation of the 1st
Although the electromagnetic brake 40 does not operate, the second electromagnetic brake 50 can prevent rotation of the turntable.

Furthermore, when the second electromagnetic brake 50 is activated, by forcibly turning the arm support member 25 and the arm 26 that are interlocked with the turntable 32, the arm 26 and the X-ray tube 2l provided on the arm 26 can be rotated. and X-ray processing section 2
2 etc. can be evacuated to a safe position. Then, unless the second electromagnetic brake 50 is forcibly turned as described above, the arm 26, the X-ray tube 21, and the
It holds the ray processing unit 22 and supports these arms 26 and the X-ray tube 21.
And the x'fiA processing section 22 does not move carelessly.

In addition, the reference numeral 35 in FIG.
6 is a plunger.

(Effect of the invention) As described above, according to the present invention, in normal cases,
The first electromagnetic brake and the second electromagnetic brake prevent the turntable from turning, and in the event of a power outage, the second electromagnetic brake can prevent the turntable from turning. By applying force, the arm and
The FA tube and the X-ray processing section can be evacuated to a safe position and held at that safe position, thereby improving safety.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the schematic structure of the column rotation device, FIG. 2 is a cross-sectional view of the same, and FIG. 3 is a side view showing the second electromagnetic brake.
FIG. 4 is a perspective view showing the overall configuration of the X-ray imaging apparatus. 2l...X-ray tube 22...X-ray processing section 23...Strut 26...Arm 30...Strut rotation device 31...Base member 32...Turntable 40...First Electromagnetic brake 50...second electromagnetic brake

Claims (1)

[Scope of Claims] 1) The strut is erected so as to be freely pivotable via a strut rotation device,
In an X-ray imaging apparatus in which an arm equipped with an X-ray tube and an The member or turntable is provided with a first electromagnetic brake that prevents rotation of the turntable when electricity is applied, and a second electromagnetic brake that prevents rotation of the turntable when electricity is cut off, and the second electromagnetic brake prevents the brake from operating. 1. A support pivoting device for an X-ray imaging apparatus, characterized in that the turntable is configured to pivot when an appropriate force is applied in a state.