CN106691479A - X-ray tube apparatus and X-ray CT device - Google Patents
X-ray tube apparatus and X-ray CT device Download PDFInfo
- Publication number
- CN106691479A CN106691479A CN201610911315.0A CN201610911315A CN106691479A CN 106691479 A CN106691479 A CN 106691479A CN 201610911315 A CN201610911315 A CN 201610911315A CN 106691479 A CN106691479 A CN 106691479A
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- China
- Prior art keywords
- ray
- mentioned
- outer ring
- preloading spring
- pad
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
-
- 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
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
-
- 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
Abstract
The invention provides an X-ray tube apparatus configured to inhibit an outer ring from sliding in a circumferential direction even in the case that an anode of the X-ray tube apparatus is large and provides an X-ray CT device carrying the X-ray tube apparatus. The X-ray tube apparatus is characterized by comprising an anode for radiating X-rays by irradiation of electron beams; a rotating shaft portion serving as a rotation axis of the anode; a rotary bearing rotatably supporting the rotary shaft with respect to a fixing portion, and having outer rings and inner rings provided with bearing balls arranged therebetween and arranged on the rotating shaft portion in the direction of the rotation axis; inside preloaded springs arranged among a plurality of rotation bearings and prepressing the rotation bearings in the direction of the rotation axis; outside preloaded springs prepressing at least one outer ring of the rotation bearings in the direction of the rotation axis; and a spacer disposed between the rotation bearings of the outside preloaded springs and the inside preloaded springs and fixed on the fixing portion.
Description
Technical field
The present invention relates to X-ray pipe device and X ray CT (Computed Tomography) device, more particularly to make rotation
Turn the construction that the swivel bearing of anode type x-ray pipe device is stably rotated.
Background technology
X ray CT device is used by making X-ray pipe device and the X that will transmit through subject to subject X-ray irradiation
The X-ray detector that quantity of X-rays X is detected as data for projection throwing from multi-angle obtained from rotation around subject
Shadow data rebuild the tomographic map of subject, and the tomographic map that display is rebuild.The image shown in X ray CT device is described
The shape of the internal organs in subject, for diagnostic imaging.
For the X-ray pipe device for X ray CT device, the rotary anode type X for rotating discoidal anode is used
Ray tube apparatus.The swivel bearing that anode can be pivotally supported generally separates predetermined on the rotation direction of principal axis of rotation axle portion
Distance is configured at two.Swivel bearing has：Inner ring in rotation axle portion；Located at the outer ring of the inner surface of fixed part；With
And the bearing ball clipped by inner ring and outer ring.Between bearing ball and inner ring and outer ring, in order to reduce friction, solid is formed
Lubricating film.In order that swivel bearing is smooth and is stably rotated, expect that bearing ball and inner ring, the gap of outer ring are held in properly
Scope.
In X-ray pipe device, when X-ray is produced, anode and rotation axle portion become high temperature, rotate axle portion thermal expansion,
So as to the position for rotating the inner ring in axle portion changes on rotation direction of principal axis, and then bearing ball and inner ring, the gap of outer ring expand
Greatly.Because the expansion in the gap makes the rotation of swivel bearing unstable, therefore, use the rotary anode type X for possessing preloading spring
Ray tube apparatus, the preloading spring adjusts outer ring according to the change in location of the inner ring caused because rotating the thermal expansion of axle portion
Rotate the position of direction of principal axis.But, preloading spring precharge pressure not in the case of suitable scope, bearing ball with it is interior
Solid lubricant film between circle and outer ring becomes uneven thickness, and the rotation of swivel bearing becomes unstable.
Therefore, Patent Document 1 discloses following technology, i.e. in order that the precharge pressure of preloading spring is properly changed, with
Together, configuration pushes outer ring to the inner side preloading spring of the inner side applying precharge pressure from swivel bearing being configured at two from outside
Outside preloading spring, and make inner side preloading spring stronger than outside preloading spring elasticity.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 5-290769 publications
The content of the invention
Invent problem to be solved
But, do not consider the vibration slided in the circumferential direction due to outer ring and produced in patent document 1.Penetrated with X
The rotary speed high speed of line CT devices, the anode of X-ray pipe device is large-scale, it is therefore desirable to make the power of preloading spring bigger,
But, compared to inner side preloading spring, outside preloading spring elastic force is weak, therefore, outer ring is slided and produces vibration in the circumferential direction, its
As a result, the noise that X-ray pipe device is produced becomes big.It is uneasy that big noise produces subject, it is therefore desirable for reducing X-ray tube dress
The noise put.
Therefore, though it is an object of the invention to provide a kind of anode in X-ray pipe device in the case of large-scale,
X-ray pipe device of the outer ring to the construction of the slip of circumferential direction can be suppressed, and a kind of carrying X-ray pipe device is provided
X ray CT device.
Scheme for solving problem
To achieve these goals, the present invention is a kind of X-ray pipe device, it is characterised in that possessed：By irradiating electronics
Ray and radiate the anode of X-ray；As the rotation axle portion of the rotary shaft of above-mentioned anode；Swivel bearing, it is relative to fixed part
Above-mentioned rotation axle portion can be pivotally supported, with the outer ring and inner ring that clip bearing ball, and in the rotation of above-mentioned rotation axle portion
Configured in rotor shaft direction multiple；Inner side preloading spring, it is configured between multiple swivel bearings, and along the precompressed rotation of rotation direction of principal axis
Rotating shaft is held；Outside preloading spring, it is along the outer ring for rotating at least one of direction of principal axis precompressed multiple swivel bearings；And pad
Piece, it is configured between the swivel bearing of above-mentioned outside preloading spring precompressed and above-mentioned inner side preloading spring, and is fixed on above-mentioned
Fixed part.
In addition, the present invention is a kind of X ray CT device, it possesses：Above-mentioned X-ray pipe device；With above-mentioned X-ray pipe device
The X-ray detector that arranged opposite and to having passed through subject X-ray is detected；Carry above-mentioned X-ray pipe device and upper
State X-ray detector and the rotating circular disk rotated around above-mentioned subject；Based on as detected by above-mentioned X-ray detector
The transmission amount of x-ray from multi-angle rebuild the equipment for reconstructing image of the tomographic map of above-mentioned subject；And to by upper
State the image display device that the tomographic map that equipment for reconstructing image rebuild is shown.
The effect of invention
Even if in accordance with the invention it is possible to provide a kind of anode in X-ray pipe device in the case of large-scale, it is also possible to press down
X-ray pipe device from outer ring processed to the construction of the slip of circumferential direction, and provide it is a kind of carry the X-ray pipe device X-ray
CT devices.
Brief description of the drawings
Fig. 1 is the integrally-built block diagram for representing X ray CT device of the invention 1.
Fig. 2 is the integrally-built figure for representing X-ray pipe device 101 of the invention.
Fig. 3 is the figure for representing first embodiment of the invention, is the figure of the construction for representing rotary body supporting part 215.
Fig. 4 is as the stereogram for being combined with inner ring, bearing ball, the swivel bearing of the part of outer ring.
Fig. 5 is the figure for representing second embodiment of the present invention, is the figure of the construction for representing rotary body supporting part 215.
Fig. 6 is the figure for representing third embodiment of the present invention, is the figure of the construction for representing rotary body supporting part 215.
Fig. 7 is the figure for representing the 4th implementation method of the invention, is the figure of the construction for representing rotary body supporting part 215.
Fig. 8 is the enlarged drawing of the dotted line format in Fig. 7.
Fig. 9 is the direction view observed from the direction of the arrow A in Fig. 8.
Figure 10 is the figure for representing the 5th implementation method of the invention, is the figure of the construction for representing rotary body supporting part 215.
Figure 11 is the figure for representing the 6th implementation method of the invention, is the figure of the construction for representing rotary body supporting part 215.
Symbol description
1-X ray CT device, 100-scanning support portion, 101-X-ray pipe device, 102-rotating circular disk, 103-collimation
Instrument, 104-opening portion, 105-bed, 106-X-ray detector, 107-data acquisition device, 108-mill stand control device,
109-bed control device, 110-X-ray control device, 120-operating desk, 121-input unit, 122-image operation dress
Put, 123-storage device, 124-system control device, 125-display device, 210-X-ray tube, 211-negative electrode, 212-
Anode, 213-outer cover, 214-magnet exciting coil, 215-rotary body supporting part, 216-electron ray, 217-X-ray, 218-
Radiation window, 219-rotary shaft, 220-container, 10-rotation axle portion, 10a-flange, 11a, 11b-outer ring, 12a, 12b-axle
Hold ball, 13-pre-press, 14a-inner side preloading spring, 14b-outside preloading spring, 15-pad, 16-c-type pad,
17-fixed part, 20-screw, 25-pad, 27-fixed part, 29-pad, 30-pin, 31a, 41a-outer ring, 41a1-
Step, 43-pre-press, 43a-projection, 45-pad, 50-back-up ring, 54a-outside preloading spring, 63-pre-press,
64a-inner side preloading spring, 64b, 64c-outside preloading spring, 65-pad, 66-c-type pad.
Specific embodiment
Hereinafter, with reference to the accompanying drawings, to X ray CT device of the invention and the X-ray pipe device for being equipped on X ray CT device
Preferred embodiment illustrate.Additionally, in the following description and accompanying drawing, for the structure with identical functional structure
Unit, adds same-sign, so as to omit repeat specification.
(first embodiment)
Using Fig. 1, the overall structure to applying X ray CT device of the invention 1 is illustrated.X ray CT device 1 has
Standby scanning support portion 100 and operating desk 120.
Scanning support portion 100 possesses X-ray pipe device 101, rotating circular disk 102, collimator 103, X-ray detector 106, number
According to harvester 107, bed 105, mill stand control device 108, bed control device 109 and X-ray control device 110.X-ray tube
Device 101 is the device to the subject X-ray irradiation being placed on bed 105.For the structure of X-ray pipe device 101, use
Fig. 2 is described after a while.
Collimator 103 is device of the limitation from the radial extent of the X-ray of the irradiation of X-ray pipe device 101.Rotating circular disk
102 possess the opening portion 104 that the subject for being placed on bed 105 enters, and carry X-ray pipe device 101 and X-ray inspection
Device 106 is surveyed, X-ray pipe device 101 and X-ray detector 106 is rotated around subject.
X-ray detector 106 is arranged opposite with X-ray pipe device 101, and it is to enter by the X-ray through subject
Row is detected and measures the device of the spatial distribution through X-ray, and multiple x-ray detection devices are arranged in into rotating circular disk 102
Direction of rotation, or be two-dimensionally arranged in rotating circular disk 102 direction of rotation and rotation direction of principal axis.Data acquisition device 107
It is the device that will be acquired as numerical data by the amount of x-ray detected by X-ray detector 106.Mill stand control is filled
Put 108 devices for being the rotation for controlling rotating circular disk 102.Bed control device 109 is to control all around moving up and down for bed 105
Device.X-ray control device 110 is the device of the electric power that control is input into X-ray pipe device 101.
Operating desk 120 possess input unit 121, image operation device 122, display device 125, storage device 123 and
System control device 124.Input unit 121 is the device for being input into subject name, check data, photography conditions etc., tool
It is keyboard, location equipment for body.Image operation device 122 is that the measurement data sent out from data acquisition device 107 is carried out
Calculation process and rebuild the device of tomographic map.
Display device 125 is the device for showing the tomographic map rebuild by image calculation apparatus 122, specifically,
It is CRT (Cathode-Ray Tube), liquid crystal display etc..Storage device 123 is to being gathered by data acquisition device 107
To data and the tomographic map rebuild by image operation device 122 the device that is stored of view data, it is specific and
Speech, is HDD (Hard Disk Drive) etc..System control device 124 is to these devices and mill stand control device 108, bed control
The device that device processed 109 and X-ray control device 110 are controlled.
Based on the photography conditions being input into from input unit 121, x-ray tube voltage, x-ray tube current etc. are particularly, X is penetrated
Thread control device 110 control to X-ray pipe device 101 be input into electric power so that X-ray pipe device 101 to subject irradiation with
The corresponding X-ray of photography conditions.X-ray detector 106 is detected from X-ray pipe device 101 by multiple x-ray detection devices
The X-ray of subject, and measurement are irradiated and passed through through the distribution of X-ray.Rotating circular disk 102 is by mill stand control device 108
Control, is rotated based on the photography conditions being input into from input unit 121, particularly rotary speed etc..Bed 105 is controlled by bed
Device 109 is controlled, and is acted based on the photography conditions being input into from input unit 121, particularly spiral spacing etc..
Rotation with rotating circular disk 102 repeats the x-ray bombardment from X-ray pipe device 101 and X-ray detection
The measurement of the transmission X-ray distribution of device 106, so as to obtain the data for projection from each angle.To get from each angle
Data for projection send to image operation device 122.The data for projection from each angle that 122 pairs, image operation device sends
Back projection's treatment is carried out, so as to rebuild tomographic map.The tomographic map that reconstruction is obtained is shown in display device 125.
Using Fig. 2, the structure to X-ray pipe device 101 is illustrated.X-ray pipe device 101 possesses：Produce X-ray
X-ray tube 210；And the container 220 of storage X-ray tube 210.
X-ray tube 210 possesses：Produce the negative electrode 211 of electron ray；Apply the anode 212 of positive potential to negative electrode 211；With
And negative electrode 211 and anode 212 are held in the outer cover 213 in vacuum environment.
Negative electrode 211 possesses filament or cold cathode and focusing electrode.Filament is that the materials with high melting point such as tungsten are wound into coiled type
Part, it is heated by circulating current, so that launching electronics.Cold cathode is sharply to cut the metal materials such as nickel, molybdenum
The part of point, it is by electric field in cathode surface concentration using field emission come launching electronics.Focusing electrode is formed for making
The focusing electric field that the electronics launched is focused on towards the x-ray focus on anode 212.Filament or cold cathode and focusing electrode are
Same current potential.
Anode 212 possesses to negative electrode and anode base material.To the high-melting-points such as negative electrode tungsten and the big material composition of atomic number.
The electron collision launched from negative electrode 211 to the x-ray focus on negative electrode, so as to radiate X-ray 217 from x-ray focus.Anode
Base material is formed by the pyroconductivities such as copper material high, and is kept to negative electrode.It is same current potential to negative electrode and anode base material.
In order to will be electrically insulated between negative electrode 211 and anode 212, negative electrode 211 and anode 212 are held in vacuum by outer cover 213
In environment.Possess for the radiation window 218 that X-ray 217 is radiated outside X-ray tube 210 in outer cover 213.Radiation window 218 is penetrated by X
The small material of the atom sequence numbers such as line transmitance beryllium high is constituted.Radiation window 218 is also equipped with container described later 220.Outer cover 213
Current potential be earthing potential.
The electronics launched from negative electrode 211 is accelerated by the voltage applied between negative electrode and anode, is penetrated as electronics
Line 216.When electron ray 216 focused on due to focusing electric field and and then with negative electrode x-ray focus collide when, penetrated from X
Line focus produces X-ray 217.The energy of the X-ray of generation by between negative electrode and anode apply voltage, so-called tube voltage
Determine.The quantity of X-rays X of the X-ray of generation is determined by the amount of the electronics from emission of cathode, so-called tube current and tube voltage.
In the energy of electron ray 216, the ratio for being transformed into X-ray is only 1% or so, the quantitative change of remaining most energy
Into heat.In the X-ray pipe device 101 of medical X-ray CT devices 1 is equipped on, tube voltage is 100 kV, tube current is
Hundreds of mA, therefore, anode 212 is by the heat of tens of kW.In order to prevent due to this heating, anode 212 crosses heat fusing,
Anode 212 is connected to rotary body supporting part 215, and by the driving of rotary body supporting part 215, is with the chain-dotted line 219 in Fig. 2
Rotary shaft is rotated.In the following description, the rotary shaft of anode 212 is carried out into referred to as rotary shaft 219 using symbol 219.Rotation
As rotary driving force be driven in magnetic field produced by magnet exciting coil 214 by swivel supporting part 215.Revolved by making anode 212
Turn, as electron ray 216 collide part x-ray focus all the time in movement, therefore, it is possible to keep the temperature of x-ray focus
Degree is lower than anticathode melting point, is prevented from anode 212 and crosses heat fusing.
X-ray tube 210 and magnet exciting coil 214 are accommodated in container 220.In container 220, X-ray tube 210 is electrically insulated
While, fill as the insulating oil of cooling medium.Filling to the insulating oil in container 220 by with X-ray pipe device 101
The pipe arrangement of the connection of container 220 and be imported into cooler, and by after cooler heat release, being returned by pipe arrangement in container 220.
Because in the heat produced by x-ray focus, anode 212 is 1000 DEG C or so of mean temperature.Produced hot one
More than half radiation using the surface from anode 212 and to the heat release of outer cover 213, remaining heat utilization heat transfer and pass through rotary body
Outer cover 213 is flowed to after supporting part 215.
Using Fig. 3, the rotary body supporting part 215 to the major part as present embodiment is illustrated.Fig. 3 is to represent
The figure of the construction of rotary body supporting part 215, is the sectional view along rotary shaft 219.Rotary body supporting part 215 and anode 212
The dorsal part connection in the face opposed with negative electrode 211, it possesses the rotation axle portion 10 including flange 10a, outer ring 11a, 11b, bearing rolling
Pearl 12a, 12b, pre-press 13, inner side preloading spring 14a, outside preloading spring 14b, pad 15, c-type pad 16 and fixed part
17.Hereinafter, each portion is illustrated.
Flange 10a is connected with anode 212, and is integrated with rotation axle portion 10.Rotate the portion beyond the flange 10a of axle portion 10
Point there is cylindrical shape, and multiple positions on the outer periphery, two positions in the direction of such as rotary shaft 219 are provided with circular shape
Groove, the groove forms inner ring.Rotary driving force is acted on by rotation axle portion 10, is connected via rotation axle portion 10 and flange 10a
Anode 212 with rotary shaft 219 for pivot is rotated.
Outer ring 11a, 11b be toroidal inner peripheral surface side be provided with circular shape groove part, they and rotary shaft
Portion 10 with one heart, and is opposed to configuration with the inner ring located at rotation axle portion 10.Outer ring 11a is the outer ring for being close to the side of anode 212, due to
It is high temperature, therefore also referred to as high temperature side outer ring compared to outer ring 11b.Outer ring 11b is the outer ring away from the side of anode 212, due to comparing
Outer ring 11a is low temperature, therefore also referred to as low temperature side outer ring.Outer ring 11a, 11b are configured at pad described later 15 or fixed part 17
Inner surface.
Between inner ring and outer ring 11a, 11b, along multiple bearing ball 12a, 12b of periphery configuration of rotation axle portion 10.
In order to reduce friction during rotation, in bearing ball 12a, 12b and inner ring, the contact surface of outer ring 11a, 11b, as solid lubrication
Film forms the film of lead, silver, tin or their alloy.By inner ring and outer ring 11a, 11b, multiple bearing ball 12a, 12b combinations
Part be referred to as swivel bearing.Fig. 4 represents the stereogram of swivel bearing.
Pre-press 13 is the pad with toroidal, and it is in order that the offset placed load of preloading spring 14a in inner side described later
Uniformly it is configured between the preloading spring 14a and outer ring 11a of inner side.
Inner side preloading spring 14a is the spring that metal wire is wound into coiled type, and its one end is connected with pad described later 15,
Other end precompressed outer ring 11a on the direction of rotary shaft 219 via pre-press 13.Even if due to rotation axle portion 10 as heat is swollen
The movement of swollen inner ring and bearing ball 12a and inner ring, the gap expansion of outer ring 11a, also by the bullet of inner side preloading spring 14a
Power and outer ring 11a is moved on the inner peripheral surface of pad 15, therefore, it is possible to ensure gap be in suitable scope.
Outside preloading spring 14b is the spring that metal wire is wound into coiled type, its one end and the phase of fixed part described later 17
Even, other end precompressed outer ring 11b on the direction of rotary shaft 219.By the elastic force of outside preloading spring 14b, suppress outer ring 11b to
The slip of circumferential direction.
Pad 15 has drum with the level, and it is concentrically arranged at outer ring 11a and pre-press with rotation axle portion 10
13rd, the outside of inner side preloading spring 14a.Between pad 15 and rotation axle portion 10, outer ring 11a and pre-press 13, inner side are configured
Preloading spring 14a, outer ring 11a and pre-press 13 are contacted with the inner surface of pad 15.
C-type pad 16 is the pad of the c-type shape with the part for having cut off drum, and it is used to fill up
The gap produced when rotary body supporting part 215 is assembled.C-type pad 16 is installed on rotation between pad 15 and outer ring 11b
The outer surface of axle portion 10.
Fixed part 17 is the shape for being combined with shape and cylindrical portion with the level that bottom surface is provided with one end of cylinder,
One end of its cylindrical portion is supported in outer cover 213, and is concentrically arranged at outer ring 11b and c-type pad 16, outside with rotation axle portion 10
The outside of preloading spring 14b.Fixed part 17 and rotation axle portion 10 between configure outer ring 11b and c-type pad 16, outer ring 11b with
The inner surface contact of fixed part 17.Fixed part 17 is conjointly configured on the direction of rotary shaft 219 with pad 15, and by fixed part 17
Welded with pad 15.
That is, pad 15 is fixed on fixed part 17, the elastic force of the inner side preloading spring 14a being connected with pad 15 not direct effect
In outer ring 11b.As a result, outside preloading spring 14b can be made stronger than inner side preloading spring 14a, even and if in anode 212 being
In the case of large-scale, it is also possible to the elastic force enhancing of outside preloading spring 14b is prevented from slips of the outer ring 11b to circumferential direction
Degree.Even if it is, in the case where the anode of X-ray pipe device is large-scale, it is also possible to suppress cunning of the outer ring to circumferential direction
It is dynamic.
More than, as described, in the present embodiment, weldering is utilized by by the pad 15 that inner side preloading spring 14a is connected
Connect and be fixed on the structure of fixed part 17, though X-ray pipe device 101 anode 212 in the case of large-scale, it is also possible to press down
Slip from outer ring 11b processed to circumferential direction.In addition, according to the construction of present embodiment, can make what is connected as outer ring 11a, 11b
The surface roughness of a part for a part for position, pad 15 inner peripheral surface and the inner peripheral surface of fixed part 17 is big, therefore energy
Enough man-hours reduced needed for processing.
(second embodiment)
Next, being illustrated to second embodiment.In the first embodiment, pad 15 is fixed using welding
In fixed part 17.In contrast, in the present embodiment, fixed using screw fastening.
Using Fig. 5, the rotary body supporting part 215 to the major part as present embodiment is illustrated.Fig. 5 is to represent
The figure of the construction of rotary body supporting part 215, is the sectional view along rotary shaft 219.As shown in figure 5, the pad of present embodiment
25 and fixed part 27 shape it is different from first embodiment.Hereinafter, each portion is illustrated, but for the first embodiment party
Formula identical construction unit, omits the description.
Pad 25 has drum with the level, and is concentrically arranged at pre-press 13 and inner side is pre- with rotation axle portion 10
The outside of tight spring 14a.Pre-press 13 and inner side preloading spring 14a, pre-press are configured between pad 25 and rotation axle portion 10
13 contact with the inner surface of pad 25.
Fixed part 27 is provided with the shape of bottom surface and the shape of cylindrical portion with the level in one end of cylinder for combination, circle
The one end in post portion is supported in outer cover 213.Inner side configuration outer ring 11a, 11b, pad 25 in fixed part 27 etc..Pad 25 passes through spiral shell
Nail 20 is fixed on fixed part 27.Screw 20 is installed on multiple positions of circumferencial direction, such as three positions.In addition, being not limited to spiral shell
Nail 20, it is also possible to pad 25 is fixed on fixed part 27 by inserting pins into multiple positions of circumferencial direction.
In the same manner as first embodiment, pad 25 is fixed on fixed part 27, therefore the inner side pretension being connected with pad 25
The elastic force of spring 14a is not directly placed on outer ring 11b, outside preloading spring 14b can be made stronger than inner side preloading spring 14a, i.e.,
Make in the case where anode 212 is large-scale, it is also possible to suppress slip of the outer ring to circumferential direction.
And, pad 29 can also be configured between the preloading spring 14b and outer ring 11b of outside.Pad 29 has annular
Shape, and make the offset placed load of outside preloading spring 14b uniform.
More than, as described, in the present embodiment, the pad 25 of inner side preloading spring 14a connections is passed through into screw 20
And it is fixed on fixed part 27.According to this structure, even if in the case where the anode 212 of X-ray pipe device 101 is large-scale,
Slips of the outer ring 11b to circumferential direction can be suppressed.In addition, according to the construction of present embodiment, can be by simple structure
Pad 25 is fixed on fixed part 27, therefore, it is possible to the man-hour needed for the processing for reducing each part.
(the 3rd implementation method)
Next, being illustrated to the 3rd implementation method.In the present embodiment, in the same manner as second embodiment, will
The pad 25 of inner side preloading spring 14a connections is fixed on fixed part 27 by screw 20, and with preloading spring 14a on the inside of suppressing
The outer ring of direct effect is fixed to the mode of the rotation of circumferential direction.
Using Fig. 6, the rotary body supporting part 215 to the major part as present embodiment is illustrated.Fig. 6 is to represent
The figure of the construction of rotary body supporting part 215, is the sectional view along rotary shaft 219.As shown in fig. 6, in the present embodiment, with
The difference of second embodiment is to add pin 30；And the shape of outer ring 31a.Hereinafter, each portion is illustrated, but,
For with second embodiment identical construction unit, omit the description.
Pin 30 have such as diameter 1mm size, and insertion fixed part 27 and reach located at the hole of outer ring 31a, by weldering
Connect and be fixed on fixed part 27.
In outer ring, 31a is provided with the hole of the entrance of supply and marketing 30, and in the case of a diameter of 1mm of such as pin 30, the size in hole is,
The width of circumferential direction is 1mm, and the width in the direction of rotary shaft 219 is 2mm, and depth is 1mm.By make the width of the circumferential direction in hole with
The equal diameters of pin 30, can suppress outer ring 31a to slip from the rotation of circumferential direction, i.e. outer ring 31a to circumferential direction.In addition, making
The width in the direction of rotary shaft 219 in hole is bigger than the diameter of pin 30, and outer ring 31a can be moved up in the side of rotary shaft 219, Neng Goushi
The function of existing inner side preloading spring 14a.
More than, as described, in the present embodiment, slips of the outer ring 31a to circumferential direction can be suppressed using pin 30.Separately
Outward, the pad 25 of inner side preloading spring 14a connections is fixed on fixed part 27 by screw 20, therefore also can in the present embodiment
Enough suppress slips of the outer ring 11b to circumferential direction.
(the 4th implementation method)
Next, being illustrated to the 4th implementation method.In the present embodiment, in the same manner as second embodiment, general
The pad 25 of inner side preloading spring 14a connections is fixed on fixed part 27 by screw 20, and with preloading spring 14a on the inside of suppressing
The shape of the pre-press, outer ring and the pad that are connected with outer ring is changed to the mode of the rotation of circumferential direction in the outer ring of direct effect.
Using Fig. 7 to Fig. 9, the rotary body supporting part 215 to the major part as present embodiment is illustrated.Fig. 7
It is the figure of the construction for representing rotary body supporting part 215, is the sectional view along rotary shaft 219.Fig. 8 is the dotted line format in Fig. 7
Enlarged drawing, Fig. 9 is the direction view observed from the direction of the arrow A in Fig. 8.As shown in Figure 7 to 9, in the present embodiment,
With the shape that the difference of second embodiment is the pre-press 43, outer ring 41a and pad 45 that are connected with outer ring 41a.Hereinafter,
Each portion is illustrated, but, for second embodiment identical construction unit, omit the description.
Set to radially projecting raised 43a in pre-press 43.The size of projection 43a is that the width of such as circumferential direction is
2mm, the width in the direction of rotary shaft 219 is 2mm, is highly 1mm.Projection 43a can also be located at multiple positions of circumferential direction.
In outer ring, 41a sets the groove entered for the projection 43a of pre-press 43.Size for example in projection 43a is, circumferential direction
Width be 2mm, the width in the direction of rotary shaft 219 is 2mm, highly for 1mm in the case of, the size of groove is, the width of circumferential direction
It is 2mm to spend, and the width in the direction of rotary shaft 219 is 1mm.In the case where multiple projection 43a are set, the position with projection 43a is matched somebody with somebody
Close ground and groove is set.Additionally, height 1mm and axle side can also be set in the way of being equably connected with pre-press 43 in outer ring 41a
To the step 41a1 for 0.5mm.
In the groove that pad 45 is also provided with entering for the projection 43a of pre-press 43.It is in the size of such as projection 43a, Zhou Fang
To width be 2mm, the width in the direction of rotary shaft 219 is 2mm, highly for 1mm in the case of, the size of groove is, circumferential direction
Width is 2mm, and the width in the direction of rotary shaft 219 is 1mm.In the case where multiple projection 43a are set, the position with projection 43a
Groove is ordinatedly set.
In fixed part 27 by the setting-up piece 45 of screw 20 in the same manner as second embodiment, therefore, it is possible to pass through projection
43a suppresses rotation of the pre-press 43 to circumferential direction into the groove of pad 45.And, entered by the projection 43a of pre-press 43
The groove of outer ring 41a, also suppress outer ring 41a to slip from the rotation of circumferential direction, i.e. outer ring 31a to circumferential direction.
More than, as described, in the present embodiment, the projection 43a of pre-press 43 enters the groove of pad 45 and outer ring 41a,
So as to suppress slips of the outer ring 31a to circumferential direction.In addition, the pad 45 of inner side preloading spring 14a connections is passed through into screw
20 are fixed on fixed part 27, therefore present embodiment can also suppress slips of the outer ring 11b to circumferential direction.
(the 5th implementation method)
Next, being illustrated to the 5th implementation method.In the present embodiment, in the same manner as second embodiment, will
The pad 25 of inner side preloading spring 14a connections is fixed on fixed part 27 by screw 20, and with preloading spring 14a on the inside of suppressing
The outer ring of direct effect adds the outside preloading spring of precompressed outer ring to the mode of the rotation of circumferential direction.
Using Figure 10, the rotary body supporting part 215 to the major part as present embodiment is illustrated.Figure 10 is table
Show the figure of the construction of rotary body supporting part 215, be the sectional view along rotary shaft 219.As shown in Figure 10, in present embodiment
In, the difference with second embodiment is, the outside preloading spring 54a of precompressed outer ring 11a；And supporting outside pretension bullet
The back-up ring 50 of spring 54a.Hereinafter, each portion is illustrated, but, for second embodiment identical construction unit, omit
Explanation.
Outside preloading spring 54a is the spring that metal wire is wound into coiled type, and its one end is connected with back-up ring described later 50,
Other end precompressed outer ring 11a on the direction of rotary shaft 219.By the elastic force of outside preloading spring 54a, suppress outer ring 11a to week
The slip in direction.But, in the way of not offsetting the elastic force of inner side preloading spring 14a, make outside preloading spring 54a more pre- than inner side
Tight spring 14a is weak.
Back-up ring 50 is located at one end of preloading spring 54a on the outside of the inner peripheral surface of fixed part 27, and support.
More than, as described, in the present embodiment, it is supported in the outside preloading spring 54a of back-up ring 50 from the side of rotary shaft 219
Precompressed is carried out to outer ring 11a, thus, it is possible to suppress slips of the outer ring 11a to circumferential direction.In addition, by inner side preloading spring 14a
The pad 45 of connection is fixed on fixed part 27 by screw 20, therefore, present embodiment can also suppress outer ring 11b to circumferential direction
Slip.
(the 6th implementation method)
Next, being illustrated to the 6th implementation method.In the present embodiment, relative to the 5th implementation method, inner side
The position of preloading spring is different, therewith the shape of the pad of inner side preloading spring connection, intensity of two outside preloading springs etc.
It is different.
The rotary body supporting part 215 of the major part as present embodiment is illustrated using Figure 11.Figure 11 is table
Show the figure of the construction of rotary body supporting part 215, be the sectional view along rotary shaft 219.As shown in figure 11, inner side preloading spring
The position of 64b is different from the 5th implementation method.Therewith, shape, the outside pretension bullet of the pad 65 of inner side preloading spring 64b connections
The position of the intensity, pre-press 63 and c-type pad 66 of spring 64b, 64c is also different from the 5th implementation method.Hereinafter, each portion is carried out
Illustrate, but for the 5th implementation method identical construction unit, omit the description.
Inner side preloading spring 64a is the spring that metal wire is wound into coiled type, and its one end is connected with pad described later 65,
The other end is via pre-press 63 from the direction precompressed outer ring 11b of rotary shaft 219.Even if because rotation axle portion 10 is with thermal expansion
Inner ring movement and bearing ball 12b and inner ring, the gap expansion of outer ring 11b, also by the elastic force of inner side preloading spring 64a
And outer ring 11b is moved on the inner peripheral surface of pad 65, therefore, it is possible to ensure that gap is in suitable scope.
Pad 65 has drum with the level, and it is concentrically arranged at pre-press 63 with rotation axle portion 10 and inner side is pre-
The outside of tight spring 64a.Between pad 65 and rotation axle portion 10, pre-press 63 and inner side preloading spring 64a, pre-press are configured
63 contact with the inner surface of pad 65.Pad 65 is fixed on fixed part 27 by screw 20.Because pad 65 is fixed on fixed part
27, therefore the elastic force of the inner side preloading spring 64a being connected with pad 65 is not directly placed on outer ring 11a.
Outside preloading spring 64b is the spring that metal wire is wound into coiled type, and its one end is connected with back-up ring 50, the other end
From the direction precompressed outer ring 11a of rotary shaft 219.The elastic force of inner side preloading spring 64a is not directly placed on outer ring 11a, therefore, also may be used
To be outside preloading spring 64b stronger than inner side preloading spring 64a, even if in the case where anode 212 is large-scale, it is also possible to make outer
The elastic force enhancing of side preloading spring 14b can suppress degree of the outer ring 11b to the slip of circumferential direction.
Outside preloading spring 64c is the spring that metal wire is wound into coiled type, and its one end is connected with fixed part 27, another
Hold from the direction precompressed outer ring 11b of rotary shaft 219.By the elastic force of outside preloading spring 64c, suppress outer ring 11b to circumferential direction
Slide.But, in the way of not offsetting the elastic force of inner side preloading spring 64a, make outside preloading spring 64c than inner side preloading spring
64a is weak.
Pre-press 63 is the pad with toroidal, itself in order that the offset placed load of inner side preloading spring 64a it is uniform and
It is configured between the preloading spring 64a and outer ring 11b of inner side.
C-type pad 66 is the pad of the c-type shape with the part for having cut off drum, and it is used to fill up
The gap produced when rotary body supporting part 215 is assembled.C-type pad 66 is installed on rotation between pad 65 and outer ring 11a
The outer surface of axle portion 10.
More than, as described, in the present embodiment, by from the inner side preloading spring of the direction precompressed outer ring 11b of rotary shaft 219
The pad 65 of 64a connections is fixed on fixed part 27 by screw 20.By this structure, even if in the sun of X-ray pipe device 101
In the case that pole 212 is large-scale, also due to outside preloading spring 64b can be made stronger than inner side preloading spring 64a, therefore, it is possible to press down
Slip from outer ring 11b processed to circumferential direction.Further, since the outside preloading spring 64c that is connected with fixed part 27 of one end is from rotary shaft
219 directions to outer ring 11a applying powers, therefore, it is possible to suppress slips of the outer ring 11a to circumferential direction.
More than, although multiple implementation methods are illustrated, but the invention is not restricted to these implementation methods.For example,
In the 3rd to the 5th implementation method, pad substitution can be carried out screw fastening, and passed through as shown in the first embodiment
Weld and be fixed on fixed part.
In addition, in the 6th implementation method, as long as not producing slips of the outer ring 11b to circumferential direction, it is also possible to be not equipped with outer
Side preloading spring 64c and pad 29.
Claims (9)
1. a kind of X-ray pipe device, it is characterised in that possess：
The anode of X-ray is radiated by irradiating electron ray；
As the rotation axle portion of the rotary shaft of above-mentioned anode；
Swivel bearing, it can pivotally support above-mentioned rotation axle portion relative to fixed part, with the outer ring for clipping bearing ball
And inner ring, and configured on the rotation direction of principal axis of above-mentioned rotation axle portion multiple；
Inner side preloading spring, it is configured between multiple swivel bearings, and along rotation direction of principal axis precompressed swivel bearing；
Outside preloading spring, it is along the outer ring for rotating at least one of direction of principal axis precompressed multiple swivel bearings；And
Pad, it is configured between the swivel bearing of above-mentioned outside preloading spring precompressed and above-mentioned inner side preloading spring, and fixed
In fixation portions.
2. X-ray pipe device according to claim 1, it is characterised in that
The elastic force of the above-mentioned inner side preloading spring of elasticity rate of above-mentioned outside preloading spring is big.
3. X-ray pipe device according to claim 2, it is characterised in that
Above-mentioned pad is fixed on fixation portions by screw or pin.
4. X-ray pipe device according to claim 2, it is characterised in that
Above-mentioned pad is welded in fixation portions.
5. X-ray pipe device according to claim 1, it is characterised in that
Pair second outer ring different from the first outer ring suppresses relative to the rotation of the circumferential direction of fixation portions, and above-mentioned first
Outer ring is by the outer ring of above-mentioned outside preloading spring precompressed.
6. X-ray pipe device according to claim 5, it is characterised in that
Possess pin, the pin insertion fixation portions and enter and be arranged on the hole of above-mentioned second outer ring.
7. X-ray pipe device according to claim 5, it is characterised in that
Possess pre-press, the pre-press is configured between above-mentioned pad and above-mentioned second outer ring, and be separately positioned on entering
The projection of the groove of above-mentioned pad and above-mentioned second outer ring.
8. X-ray pipe device according to claim 5, it is characterised in that
Possesses the second outside preloading spring of above-mentioned second outer ring of precompressed.
9. a kind of X ray CT device, the X ray CT device possesses：To the x-ray source of subject X-ray irradiation；Penetrated with above-mentioned X
The X-ray detector that line source is arranged opposite and X-ray of to having passed through above-mentioned subject is detected；Carry above-mentioned x-ray source
And above-mentioned X-ray detector and around above-mentioned subject rotate rotating circular disk；Based on being examined by above-mentioned X-ray detector
The transmission amount of x-ray for measuring rebuilds the equipment for reconstructing image of the tomographic map of above-mentioned subject；And to by above-mentioned image weight
The image display device that the tomographic map that device rebuild is shown is built,
Above-mentioned X ray CT device is characterised by,
Above-mentioned x-ray source is the X-ray pipe device any one of claim 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015222387A JP2017091881A (en) | 2015-11-12 | 2015-11-12 | X-ray tube apparatus and X-ray CT apparatus |
| JP2015-222387 | 2015-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106691479A true CN106691479A (en) | 2017-05-24 |
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ID=58768070
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610911315.0A Pending CN106691479A (en) | 2015-11-12 | 2016-10-19 | X-ray tube apparatus and X-ray CT device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017091881A (en) |
| CN (1) | CN106691479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570118A (en) * | 2024-01-17 | 2024-02-20 | 苏州长城精工科技股份有限公司 | Coupling bearing structure of CT bulb tube |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175480B (en) * | 2021-05-18 | 2023-01-06 | 杰锋汽车动力系统股份有限公司 | Hydrogen circulating pump bearing structure |
| JP7433274B2 (en) | 2021-06-25 | 2024-02-19 | 富士フイルムヘルスケア株式会社 | X-ray tube equipment and X-ray CT equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02126543A (en) * | 1988-11-04 | 1990-05-15 | Toshiba Corp | Rotary positive electrode x-ray tube |
| JPH05290769A (en) * | 1992-04-06 | 1993-11-05 | Hitachi Medical Corp | Rotary anode x-ray tube |
| CN101419892A (en) * | 2007-10-23 | 2009-04-29 | 台州优特轴承有限公司 | Anode component for X ray tube |
| JP2014086163A (en) * | 2012-10-19 | 2014-05-12 | Hitachi Medical Corp | Rotary anode x-ray tube device and x-ray imaging device |
-
2015
- 2015-11-12 JP JP2015222387A patent/JP2017091881A/en active Pending
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2016
- 2016-10-19 CN CN201610911315.0A patent/CN106691479A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02126543A (en) * | 1988-11-04 | 1990-05-15 | Toshiba Corp | Rotary positive electrode x-ray tube |
| JPH05290769A (en) * | 1992-04-06 | 1993-11-05 | Hitachi Medical Corp | Rotary anode x-ray tube |
| CN101419892A (en) * | 2007-10-23 | 2009-04-29 | 台州优特轴承有限公司 | Anode component for X ray tube |
| JP2014086163A (en) * | 2012-10-19 | 2014-05-12 | Hitachi Medical Corp | Rotary anode x-ray tube device and x-ray imaging device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570118A (en) * | 2024-01-17 | 2024-02-20 | 苏州长城精工科技股份有限公司 | Coupling bearing structure of CT bulb tube |
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| Publication number | Publication date |
|---|---|
| JP2017091881A (en) | 2017-05-25 |
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Application publication date: 20170524 |