JP2015167655A - Ceiling travel type x-ray imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling travel type X-ray imaging apparatus in which sound generated in an electromagnetic brake can be easily prevented.SOLUTION: A ceiling travel type X-ray imaging apparatus has such a constitution that a first electromagnetic brake part includes a first electromagnet part and a first pressing part for pressing the first electromagnet part in a direction of first rails, the first electromagnet part is pressed in the direction of the first rails by the first pressing part at the time of movement of second rails, the first electromagnet part is adsorbed in the direction of the first rails consisting of magnetic material by turning the first electromagnet part itself into a magnet in addition to pressure in the direction of the first rails at the time of brake of the second rails, and the first electromagnet part is provided with a first slide guide brought into contact with the first rails.

Description

  The present invention relates to an overhead traveling X-ray imaging apparatus in which an X-ray generation unit is suspended from a ceiling, and more particularly to a technique for reducing sound generated when an X-ray generation unit travels.

  In general, an X-ray imaging apparatus obtains an X-ray signal of a subject by irradiating the subject with X-rays and detecting transmitted X-rays with an X-ray detector. The X-ray diagnostic apparatus displays an X-ray image or a fluoroscopic image on the display unit by processing the X-ray signal in the image processing unit.

  As one of such X-ray imaging apparatuses, there is an overhead traveling X-ray imaging apparatus in which an X-ray generation unit is suspended from a ceiling and the floor occupancy of the apparatus is reduced.

  Patent Document 1 particularly discloses an overhead traveling X-ray imaging apparatus that uses an electromagnetic brake without using a manual lock for fixing a column used when suspending an X-ray tube from above.

JP 2008-245726 A

  However, in the technique described in Patent Document 1, no consideration has been given to the sound generated in the electromagnetic brake when the X-ray generator travels.

  An object of the present invention is to provide an overhead traveling X-ray imaging apparatus capable of reducing sound generated in an electromagnetic brake when an X-ray generation unit travels.

  In order to solve the above-described problems, according to the present invention, a first rail installed parallel to each other on a ceiling, and a first rail that moves on the first rail and is parallel to each other in a direction orthogonal to the first rail. A second rail installed on the first rail, a first electromagnetic brake portion attached to the second rail and applying a brake on the first rail, a moving portion moving on the second rail, An overhead traveling X-ray imaging apparatus having a supporting column installed in a moving unit and an X-ray generating unit suspended by the supporting column, wherein the first electromagnetic brake unit is a first electromagnet And a first pressing part that presses the first electromagnet part in the direction of the first rail, and when the second rail moves, the first pressing part causes the first pressing part to move to the first rail. One electromagnet part is pressed in the direction of the first rail, and when braking the second rail, In addition to pressing in the direction of the first rail, the first electromagnet part itself becomes a magnet so that the first electromagnet part is attracted in the direction of the first rail made of a magnetic material. An overhead traveling X-ray imaging apparatus is provided in which the first electromagnet portion is provided with a first sliding guide that contacts the first rail.

  ADVANTAGE OF THE INVENTION According to this invention, the overhead traveling type X-ray imaging device which can reduce the sound produced by an electromagnetic brake can be provided.

The figure which shows the structural example of the overhead traveling type X-ray imaging device of this invention. (a) (b) The figure which showed the internal structure of the support | pillar provided with the mechanism for moving an X-ray generation part so that raising / lowering was possible. FIG. 2 is a diagram illustrating a configuration of a brake unit described in the first embodiment. FIG. 5 is a diagram illustrating a configuration of a brake unit described in a second embodiment. (a) (b) The figure which showed the structure of the brake part demonstrated in Example 3. FIG.

  Hereinafter, the overhead traveling X-ray imaging apparatus of the present invention will be described in detail with reference to the accompanying drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments of the invention, and the repetitive description thereof is omitted.

FIG. 1 is a diagram illustrating a configuration example of an overhead traveling X-ray imaging apparatus according to the present invention. The X-ray imaging apparatus of the present invention is arranged on a bed, a fixing plate 102a for fixing the subject 101 on the bed in a supine position, and arranged vertically on the floor surface so that the subject 101 is in a standing position. An X-ray generation unit 103 that is supported by a fixing plate 102b to be fixed, a column 108 described later, and irradiates the subject 101 with X-rays, and is disposed on the subject 101 side of the X-ray generation unit 103. The X-ray diaphragm device 104 for narrowing the X-ray irradiation area by means of, the operation handle 106 to be described later, the release switch 105 for releasing the electromagnetic brake to be described later, and the X-ray generation unit 103 for generating X-rays An operation handle 106 for moving the unit 103 and the front surface of the X-ray generation unit 103,
An operation panel 107 for setting X-ray imaging conditions, a column 108 that supports the X-ray generation unit 103 from the ceiling side, a column 108, a moving unit 109 that is connected to a traveling rail 110 and a ceiling rail 111 described later, and a ceiling Arranged on the traveling rail 110 and the ceiling rail 111 for moving the moving unit 109 in the horizontal direction, the high voltage generating unit 112 for supplying power to the X-ray generating unit 103, the fixed plate 102a and the fixed plate 102b, Connected to the X-ray detectors 113a and 113b for detecting the X-rays that have passed through the subject 101, an operation unit 114 for performing various commands to the control unit 118 described later, and the X-ray detectors 113a and 113b via a cable, An X-ray image processing unit 115 that performs image processing on the X-ray signals output from the X-ray detectors 113a and 113b; a display device 116 that is connected to the X-ray image processing unit 115 and displays an X-ray image; An external storage unit 117 connected to the line image processing unit 115 and storing the X-ray image output from the X-ray image processing unit 115; And a control unit 118 for controlling each of the above components.

  Here, the traveling rail 110 (second rail) is composed of two rails, and is installed in the short direction (hereinafter referred to as Y direction) of the fixed plate 102a. The traveling rail 110 (second rail) meshes with a ceiling rail 111 described later and moves on the ceiling rail 111.

  Similarly to the traveling rail 110, the ceiling rail 111 is composed of two rails, and is installed in the longitudinal direction of the fixed plate (hereinafter referred to as the X direction).

  The moving unit 109 is installed on the traveling rail 110 and moves on the traveling rail 110. As a result of the movement of the traveling rail 110 on the ceiling rail 111 and the movement of the moving unit 109 on the traveling rail 110, the support column 108 including the moving unit 109 and the X-ray generation unit 103 moves in the X direction and the Y direction. can do.

  The support column 108 is composed of a plurality of hollow pipes having different thicknesses, and the X-ray generation unit 103 attached to the distal end portion of the support column 108 can be moved up and down in the vertical direction (hereinafter referred to as the Z direction). Therefore, the X-ray generation unit 103 is moved in the XYZ directions by the traveling rail 110, the ceiling rail 111, and the support column.

  Further, the X-ray generation unit 103 is attached to the column 108 (column unit) via a rotation mechanism unit (not shown) that enables the X-ray generation unit 103 to rotate about the horizontal axis. The X-ray generation unit 103 can be rotated around the horizontal axis (hereinafter referred to as the rotation direction) by the rotation mechanism unit.

  FIG. 2 (a) is a diagram showing an internal configuration of the support column 108 provided with a mechanism for moving the X-ray generation unit up and down. The X-ray generation unit 103 is an electromagnetic brake provided in each of the XYZ and rotation directions (in FIG. 2, only the X direction is shown, and the other directions are not shown. The position is fixed by the second electromagnetic brake part). The operator can release the fixed state by the electromagnetic brake using the release switch 105 provided on the operation handle 106, and can move the X-ray generation unit 103 in each of the XYZ and rotation directions using the operation handle 106. .

  FIG. 2 (b) shows an enlarged view of the electromagnetic brake unit 201 in which an electromagnetic brake is disposed between the traveling rail 110 and the ceiling rail 111. FIG. An adsorption plate 202 is attached to the ceiling rail 111, and an electromagnetic brake 204 is attached to the traveling rail 110 via a connecting frame 203. When the release switch 105 is OFF, electricity does not flow to the electromagnetic brake 204, so the electromagnetic brake 204 is attracted and fixed to the suction plate 202 by the magnetic force. Conversely, when the release switch 105 is ON, current is supplied to the electromagnetic brake 204. When the flowing magnetic force is canceled out by the attracting force of the electromagnetic brake 204 and the attracting plate 202, the fixed state is released and the moving becomes possible.

  Next, Example 1 of the present invention will be described with reference to FIG.

  FIG. 3 is a view showing a cross section of the electromagnetic brake unit 201. As shown in FIG. On the other hand, in FIG. 3 according to the present embodiment, the slide shaft 205 (first pressing portion and second pressing portion) is attached to the electromagnetic brake 204 (first electromagnet portion and second electromagnet portion), and at the tip thereof. The structure is such that after passing through the compression spring 206, the brake fitting 207 is passed.

  In FIG. 3, when the release switch 105 is in the ON state, the magnetic force of the electromagnetic brake 204 is canceled out. In this structure, 204 is pressed against the suction plate 202 and no gap is formed. In this state, even if the release switch 105 is turned OFF after the movement, the suction sound can be reduced because there is no gap. However, when moving the X-ray generator 103 with the electromagnetic brake 204 pressed against the suction plate 202, the outer ring (metal) of the electromagnetic brake 204 and the suction plate 202 (metal) are in contact with each other, so A moving sound is generated. Therefore, by adhering a sliding guide 209 (for example, made of resin) to the outer periphery of the electromagnetic brake 204, contact between metals can be prevented and sliding noise can be reduced.

  According to the first embodiment, it is possible to provide an overhead traveling X-ray imaging apparatus capable of reducing a sliding sound accompanying the movement of the X-ray generation unit 103.

  Next, Example 2 of the present invention will be described with reference to FIG. However, only differences from the first embodiment will be described.

  FIG. 4 is a perspective view of the electromagnetic brake unit 201. A difference from the first embodiment is a method for attaching the sliding guide 209. FIG. In the first embodiment, the sliding guide 209 is fixed by adhesion, but in the second embodiment, the sliding guide 209 is fixed by a push screw 210 so as to be removable. In the adhesive type of the first embodiment, the position of the sliding guide 209 cannot be changed. Therefore, when the electromagnetic brake 204 comes into contact with one piece or the sliding guide 209 is worn down, it is necessary to replace the electromagnetic brake 204 as well. However, in the second embodiment, only the position of the sliding guide 209 can be corrected or replaced.

  According to the second embodiment, it is possible to provide an overhead traveling X-ray imaging apparatus in which the sliding guide 209 can be adjusted and replaced more easily.

  Next, Embodiment 3 of the present invention will be described with reference to FIGS. 5 (a) and 5 (b). However, differences from the first and second embodiments will be described.

  FIGS. 5 (a) and 5 (b) are perspective views of the electromagnetic brake unit 201. The difference from the first and second embodiments is a method for attaching the sliding guide 209. FIG.

  First, in FIG. 5A, the sliding guide 209 is disposed so as to surround the electromagnetic brake 204 without being fixed thereto, and the sliding guide 209 is pressed against the suction plate 202 by the compression spring 211. In Example 2, when the sliding guide is worn down, manual maintenance is necessary.In the example of FIG. Thus, it is automatically pressed against the suction plate 202, so that maintenance work can be reduced.

  Next, with respect to FIG. 5 (b), differences from (a) will be described. In FIG. 5 (b), a hole made of an oblique rectangle is provided in the side surface of the sliding guide 209, and the guide pin 212 is attached to the side surface of the electromagnetic brake 204 through the hole. In FIG. 5 (a), the sliding guide 209 is linearly pressed as it is, so that when it comes into contact with one piece, manual correction is required. However, in FIG. 5 (b), when the sliding guide 209 is pressed against the suction plate 202 by the compression spring 211, it is automatically rotated along the hole, so that there is an advantage that it does not take time for maintenance or the like.

  According to the third embodiment, it is possible to provide an overhead traveling X-ray imaging apparatus that requires less maintenance and the like.

  The present invention is applied to an overhead traveling X-ray imaging apparatus.

  202 Suction plate, 205 Slide shaft, 206 Compression spring, 207 Brake bracket, 209 Slide guide

Claims (5)

A first rail installed parallel to each other on the ceiling; a second rail that moves on the first rail and is installed parallel to each other in a direction perpendicular to the first rail; and the second rail A first electromagnetic brake part that applies a brake on the first rail, a moving part that moves on the second rail, a support part that is installed on the moving part, and is suspended by the support part An overhead traveling X-ray imaging device having an X-ray generation unit,
The first electromagnetic brake portion includes a first electromagnet portion and a first pressing portion that presses the first electromagnet portion in the direction of the first rail, and the second rail When moving, the first electromagnet part is pressed in the direction of the first rail by the first pressing part, and when braking the second rail, the first electromagnet part is pressed in the direction of the first rail. In addition, when the first electromagnet part itself becomes a magnet, the first electromagnet part is configured to be attracted in the direction of the first rail made of a magnetic material, and the first electromagnet part includes: An overhead traveling X-ray imaging apparatus, comprising: a first sliding guide that contacts the first rail.   The overhead traveling X-ray imaging apparatus according to claim 1, wherein the first electromagnet portion has a columnar shape, and the first sliding guide is disposed on a side surface of the columnar body. .   The overhead traveling X-ray imaging apparatus according to claim 1, wherein the first sliding guide is fixed to a side surface of the first electromagnet portion by a push screw.   The first sliding guide is provided with a hole made of an oblique rectangle on the side surface, and a guide pin is attached to the side surface of the first electromagnet part through the hole, and the hole and the The first sliding guide is rotated along a side surface of the first electromagnet portion by a guide pin, and is pushed out in the direction of the first rail. The overhead traveling X-ray imaging apparatus according to claim 3.   And a second electromagnetic brake part attached to the moving part for braking on the second rail, wherein the second electromagnetic brake part includes a second electromagnet part and the second electromagnet part. A second pressing portion that presses the second electromagnet portion in the direction of the second rail, and when the moving portion moves, the second electromagnet portion of the second rail is moved by the second pressing portion. When the moving portion is braked, the second electromagnet portion is pressed against the second rail by the second electromagnet portion in the direction of the second rail. The second electromagnet portion is provided with a second sliding guide that comes into contact with the second rail. 5. The overhead traveling X-ray imaging apparatus according to the item.

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