The application be submitted on January 4th, 2005, application number be 03815834.5, denomination of invention divides an application for the application of " moving X-ray inspection apparatus ".
The specific embodiment
The moving X-ray inspection apparatus of the present invention of present embodiment, as shown in Figure 1, chassis 5 has front-wheel and trailing wheel, and the prominent pillar 4 of establishing loads control part 6 at the rear of chassis 5 in the place ahead of chassis 5.
Pillar 4 is the place ahead that the center is supported on chassis 5 free to rotately with the vertical axis.On pillar 4, liftably be supported with the slide section of arm 3.Arm 3 is a fulcrum with the slide section, can teeter, and freely stretches.Leading section at arm 3 is installed X ray generating unit 2.
Below X ray generating unit 2, has aperture portion 1.X ray generating unit 2 has not shown X-ray tube.X ray by X ray generating unit 2 penetrates is defined the range of exposures of X ray in aperture portion 1, and shines in the patient.
In addition, above control part 6, have the x-ray bombardment condition that is used to set X ray generating unit 2 and aperture portion 1, carry out the operating portion 7 of x-ray bombardment.In pillar 4, for the weight of supporting arm part 3 and X ray generating unit 2, and make arm 3 lifting actions, the parts of having accommodated the pulley that is used to constitute elevating mechanism, pulley line, having constituted with the spring of elastomeric element etc. as balance.(describing in detail) in the back
In order to carry out the X ray photography, arm 3 is moved up and down along pillar 4, and, X ray generating unit 2 is moved in the horizontal direction by the rocking action of arm 3 and the rotation of pillar 4, move to the position of regulation.After operating portion 7 setting x-ray bombardment conditions,, carry out x-ray bombardment to the patient by the aperture portion 1 setting x-ray bombardment scope of X ray generating unit 2.
Then, represent the part controlled by operating portion 7 at Fig. 2.By manipulation operations portion 7, carry out and device moves relevant control, device moves the telescopic moving of moving up and down of mobile, the pillar 4 that comprises chassis 5 or rotation, arm 3.Carry out the control of the X ray relevant again with aperture portion 1, X ray generating unit 2.
Thus, each member (aperture portion, X ray generating unit, control part, pillar) to moving X-ray inspection apparatus is described in detail in order.
<aperture portion 〉
According to Fig. 3 to Fig. 5 the concrete formation of aperture portion 1 is described.Aperture portion 1 has the casing of bottom surface side opening, at box outer surface, is provided with 12,2 irradiation switches 13 of 11,2 the 2nd operation knobs of 15,2 the 1st operation knobs in aperture rotation section and tape measure 14.
Aperture rotation section 15 is arranged on the top of casing, and aperture portion 1 is installed in rotation on the bottom of X ray generating unit 2 by this aperture rotation section 15.Center of rotation portion in aperture rotation section 15 is formed for making the X ray that produces in X ray generating unit 2 to pass the intravital hole 15a of case.
In casing, as shown in Figure 4, have movable limit blade 81, carry out blade switching mechanism 91, irradiation lamp, reflecting mirror 16 and support component that movable limit blade 81 opens and closes.
Movable limit blade 81 has the 1st movable limit blade 81 that a pair of blade part 83 is opened and closed.
And, in the upper opening portion 17 of support component, reflecting mirror 16 is installed.At support component one sidepiece, be fixed with the irradiation lamp.This irradiation lamp is not shown, but has Halogen light.The light that the irradiation lamp sends to the reflection of the below of casing, makes the patient who is positioned at the casing below illuminated by reflecting mirror 16.And this reflecting mirror 16 can make X ray pass through.
Blade switching mechanism 91 is used to carry out the on-off action of the 1st movable limit blade 81.The supported member supporting of the 1st blade switching mechanism.
(structure of the 1st blade switching mechanism)
The 1st blade switching mechanism 91 as shown in Figure 4, has the 1st turning cylinder 91a that is supported on rotationally on the support component.Direction of principal axis one at the 1st turning cylinder 91a is distolateral, and the 1st bevel gear 91b is installed, and the 2nd bevel gear 91c is engaged on this 1st bevel gear 91b.
The 2nd bevel gear 91c be fixed on power transmission shaft 91d one distolateral on, this transmitter shaft 91d is supported on the support component rotationally, and is distolateral at another of power transmission shaft 91d, is fixed with the 1st horizontal gear 91e that rotates synchronously with power transmission shaft 91d.
The 1st horizontal gear 91e, with the 1st vane drive gear 93 engagements of blade part 83 on-off actions that make a side, and the 1st vane drive gear 93 is with the 2nd vane drive gear 94 engagements of blade part 83 on-off actions that make the opposing party.
The 1st vane drive gear 93 has disk-like member 93a and at fixed 2 the circular-arc tooth parts 93b of the peripheral part of this disk-like member 93a.On the periphery of a side tooth parts 93b, form the tooth with the 1st horizontal gear 91e engagement, on the periphery of the opposing party's tooth parts 93b, form tooth with 94 engagements of the 2nd vane drive gear.
And, on the part of the neighboring of disk-like member 93a, prolong and be arranged on the connecting portion 93c that extends on the radial direction.On this connecting portion 93c, form slotted hole 93d, the pin 85 that is arranged on the blade part 83 is embedded in this slotted hole 93d movably.
The 2nd vane drive gear 94 has disk-like member 94a and is fixed on 1 circular-arc tooth parts 94b on the peripheral part of this disk-like member 94a, on the periphery of tooth parts 94b, forms the tooth with the tooth parts 93b engagement of the 1st vane drive gear 93.
And, on the part of the neighboring of disk-like member 94a, prolong and be arranged on the connecting portion 94c that extends on the radial direction.On this connecting portion 94c, form slotted hole 94d, the pin 85 that is arranged on the blade part 83 embeds in this slotted hole 94d movably.
Fix the 1st operation knob 11 at the both ends of the 1st turning cylinder 91a.In Fig. 3, Fig. 5, rotate the 1st operation knob 11 of any one party, the opposing party's the 1st operation knob 11 and the 1st turning cylinder 91a can rotate synchronously.The 1st operation knob 11 as shown in Figure 2 so that the both ends of the 1st turning cylinder 91a outstanding state in the casing is fixed on the 1st turning cylinder 91a.
So far, the outstanding mechanism in both ends that makes the 1st turning cylinder 91a is illustrated, but is not that the both ends of the 1st turning cylinder 91a are given prominence in casing.In other words, a side operation knob and the opposing party's operation knob independently are provided with, carry out the open and close controlling of identical blade part respectively.
On-off action based on the 1st movable limit blade 81 of the 1st blade switching mechanism 91 is described.If the 1st operation knob 11 is rotated, then the 1st turning cylinder 91a rotates, and the 1st vane drive gear 93 rotates by the 1st bevel gear 91b, the 2nd bevel gear 91c, the 1st horizontal gear 91e, and the 2nd vane drive gear 94 also rotates.Be accompanied by the rotation of the 1st vane drive gear 93 and the 2nd vane drive gear 94, pin 85 moves in slotted hole 93d, the 94d of connecting portion 93c, 94c, and the 1st movable limit blade 81 is opened and closed.
And, as shown in Figure 3, the irradiation switch 13 of irradiation lamp is arranged on each the casing side that is respectively arranged with the 1st operation knob 11 and the 2nd operation knob 12.Irradiation switch 13 is arranged on their below between the 1st operation knob 11 and the 2nd operation knob 12, by irradiation switch 13 opening actions, light is mapped to X ray photography part from the irradiation lamp.The irradiation scope of this light becomes the range of exposures of X ray.Usually, the irradiation lamp uses Halogen light etc.The irradiation lamp begins to extinguish automatically through certain hour from bright lamp.Therefore timing circuit also is arranged in the movable aperture of X ray.In the present embodiment, being controlled at bright lamp extinguishes after 30 seconds automatically.
Then, to moving X-ray inspection apparatus is configured in be configured in the wall limit the bed the side time operation describe.
When moving X-ray inspection apparatus was configured in the side of bed, usually, the casing face side of aperture portion 1 was a lot of towards the situation of wall.Yet, according to present embodiment, owing to the 1st operation knob 11 and the 2nd operation knob 12 also are set in the box back surface side of aperture portion 1, thereby can not make aperture portion 1 unitary rotation, and do not become inadequate posture, and carry out the setting operation of aperture simply.
And, even can only be under oblique situation near bed, because aperture portion 1 is rotated, and the 1st operation knob 11 and the 2nd operation knob 12 are positioned in face of the operator, can carry out the setting operation of aperture simply.
Though the 1st operation knob 11 and the 2nd operation knob 12 are arranged on same, as shown in Figure 5, also the 1st operation knob 11 can be arranged on different casing sides with the 2nd operation knob 12.In the case, the 2nd turning cylinder 19a of the 1st turning cylinder of the 1st operation knob 11 and the 2nd operation knob 12 is mutually vertical and be configured in the casing.Can improve operability equally with as shown in Figure 5 embodiment.
And, aperture portion 1, as shown in Figure 6, below the front setting operation plate of casing 20 of opening box type.On this operation panel, hold concurrently range display 22A, 22B, photography conditions shows and change-over switch 21, the chassis of distance display advance switch 24A, chassis of operation knob 12,11, photography conditions setting apparatus 23, the photography conditions that movable limit blade is set retreats switch 24B, irradiation switch 13.
Photography conditions when photography conditions setting apparatus 23 is set the X ray photography.Photography conditions uses the tube voltage and the mAs value (amassing of tube current and time) of X-ray tube usually.The low X ray that can obtain the weak long wavelength of transmission power of tube voltage, the tube voltage height can obtain the strong short wavelength's of transmission power X ray, adjusts tube voltage according to the tissue and the thickness of human body.The mAs value is adjusted the generating capacity of X ray.By by "+", the button of "-" that are positioned on the operation panel, adjust tube voltage and mAs value here.The display 22B on this right side by the operation of change-over switch 21, can switch the measurement result that shows ultrasonic distance meter described later.
Chassis advances, retreats switch 24A, 24B, by to its operation, drives chassis 5, makes the forward-reverse of X-ray apparatus own.Usually with X-ray apparatus alongside in the bed side, make X ray generating unit 2 and aperture portion 1 move to suitable irradiation position, but also can be by making the forward-reverse of X-ray apparatus own, and the position of decision X ray generating unit 2 and aperture portion 1.
In addition, the inside in this aperture portion 1 is provided with ultrasonic distance meter 27.Ultrasonic distance meter 27 has hyperacoustic emission acceptance division 27A, 27B and operational part, from emission part 27A emission ultrasound wave, detects the used time till receiving echo at acceptance division 27B.Based on this time, carry out computing at operational part, try to achieve the distance from the x-ray focus to the body surface, and then the distance from the x-ray focus to the X-ray film is tried to achieve in computing.Patient's body is thick, standard, a plurality of pattern storage such as thin partially, fat partially are in storage device, and by selecting patient's build in advance, the body of reading corresponding build is thick, the distance that is added to from the x-ray focus to the body surface is last, obtains the distance from the x-ray focus to the X-ray film thus.The distance of measuring, by the switching of change-over switch 21, the photography conditions that the is shown in operation panel range display 22B that holds concurrently.
In the present embodiment, emission part 27A and acceptance division 27B are set in the bight of casing face side.Because blade part carries out circular motion and the x-ray bombardment scope is adjusted, thereby there are some spaces in the outside of the arc orbit of blade part.Particularly the bight in the casing 20 as shown in Figure 6, is and the hands-off part of x-ray bombardment scope by at this configuration emission part 27A and acceptance division 27B, casing 20 is maximized and built-in ultrasonic distance meter 27.
And the handle 26 of matrix is installed in the casing both sides in this aperture portion 1, is provided for ray generating unit 2 and aperture portion 1 are fixed on arrestment mechanism on the assigned position.Not removing this arrestment mechanism just can not move.By the cancel switch 25 that this brake structure is set, X ray generating unit 2 and aperture portion 1 can be moved.Because cancel switch is arranged on the inboard of handle, as long as thereby hold handle 26, just can press cancel switch 25 simultaneously.
Fig. 7 represents the circuit block diagram of the movable aperture of X ray.Photography conditions setting apparatus 23, photography conditions the advance switch 24A, chassis of range display 22A, 22B, demonstration change-over switch 21, chassis that hold concurrently retreats switch 24B, irradiation switch 13, ultrasonic distance meter 27 and braking cancel switch 39, is connected in the lump on the microcomputer circuit plate 33 as the master control device.This microcomputer circuit plate 33 and main body amount to 4 distributions by a pair of power line 34A and a pair of connection 34B that drives microcomputer circuit plate 33 and are connected.The power supply of irradiation lamp 30 uses other power line to be connected main body side without microcomputer circuit.And ground wire 32 also is connected main body side.
Above-mentioned microcomputer circuit plate 33 comprises microcomputer, controls input and output and computing between various signals and the main body side.Because general specifications such as RS-232C are used in communication, and the communication of X-ray apparatus main body and reception are become easily, can be connected on the various devices.Can consider the data that will receive at main body side by communication, for example the determination data of distance meter is used for secondary utilizations such as automatic setting photography conditions.
This microcomputer circuit plate 33 is configured in the top in the casing 20.Because blade part is adjusted the x-ray bombardment scope by circular motion, there are some spaces in the top in casing 20.By at this spatial configuration microcomputer circuit plate 33, can effectively utilize the space in the casing 20.
X-ray apparatus is by these microcomputer circuit plate 33 following actions.At first, by the handle 26 of holding the movable aperture of X ray, will brake cancel switch 25 and be changed to out brake off.Can make aperture portion 1 (X ray generating unit 2) by sliding along pillar 4 thus, arm 3 is flexible, and moves to the position of regulation.As required, can retreat switch 24B, X-ray apparatus itself is advanced or retreat, with the position of the decision movable aperture 3 of X ray (X ray generating unit) by pressing advance switch 24A, chassis of chassis.
If irradiation switch 13 is changed to out, send opening signal by microcomputer circuit plate 33 to main body side, in the stipulated time that timing circuit is set, irradiation lamp 30 bright lamps.By the bright lamp of this irradiation lamp 30, the cameraman can confirm the range of exposures of X ray.
Then, display 22B is switched to distance display, carry out range determination by ultrasonic distance meter 27 by change-over switch 21.Send ultrasound wave from emitter, receive echo,, carry out computing, obtain the distance from the x-ray focus to the body surface, carry out computing again and obtain distance from the x-ray focus to the X-ray film at operational part based on the time around here at receptor.With the distance display obtained in display 22B.
Then, by change-over switch 21 display 22B being switched to photography conditions shows.Under this state, photography conditions setting apparatus 23 is operated, set tube voltage and mAs value.Tube voltage and mAs value at display 22B display setting.After having determined photography conditions, carry out the X ray photography.
Like this, use microcomputer circuit plate 33, to from photography conditions setting apparatus 23, the signal of the non-photography conditions control part of function carries out input and output control in the lump with controlling in addition, by carrying out the communication of aperture portion 1 and control part 6, even need finish a lot of functions, the distribution between microcomputer circuit plate 33 (the movable aperture of X ray) and the control part 6 is tailed off.
In above-mentioned, use microcomputer circuit plate 33, to being used to realize that the signal of a lot of functions controls in the lump, but as shown in Figure 8, also can make each switch 24A, 24B, 13,39 and irradiation lamp 30 be not directly connected to main body side and control by microcomputer circuit plate 33.In the case, though movable aperture of X ray and intersubjective distribution quantity increase, can carry out various operations in the movable aperture side of X ray equally.
<X ray generating unit 〉
According to Fig. 9, Figure 10 the concrete formation of X ray generating unit 2 is described.X ray generating unit 2 has the X-ray tube storage case that holds to the X-ray tube of subject irradiation X ray.
The X-ray tube storage case as shown in Figure 9, has the cap 42 of the both-side opening portion of a portion 41 and covering tube portion 41, connects by screw cap 42 is fixed in the portion 41.Omission is to the explanation of screw.
In this embodiment, the X-ray tube storage case is formed by aluminium alloy, and the tube portion of X-ray tube storage case 41 forms by drawing.Tube portion 41 makes the chimeric screw 41b of main part 41a and screw integrally formed by drawing.
The X-ray tube storage case is formed by aluminium alloy, thereby can reach the lightweight of casing integral body.And, owing to form tube portion 41, can form the pattern of expectation by drawing.
Here, as shown in figure 10, the last slanted floor of X-ray tube storage case and forming.When holding, pillar is rotated, X ray generating unit 2 is placed on the operating portion in the mode of roughly being close to, but under this state, if mobile device, for the operator, X ray generating unit 2 hinders the visual field, difficult.Therefore, the angle that consideration can be seen the leading section (chassis front wheele part) of device from operator (about 160cm) sight line of height makes the relative direct of travel of upper bottom portion of X ray generating unit 2 tilt to reduce front end.For example in the scope of 5 °<θ<45 °, X ray generating unit 2 is tilted, under the short situation of operator's height, the height of considering control part 6 causes hindering the visual field, X ray generating unit 2 is tilted 10 °, on the contrary, under the high situation of height, be set to 40 °, can see the front end of chassis 5.Like this, can guarantee to be fit to operator's the visual field, easy avoiding barrier, mobile device.Based on the angle of inclination change of the upper bottom portion of the X ray generating unit 2 of arm type of drive (concertina type, rocker arm type),, can carry out at any time according to the pattern of drawing.
<control part 〉
As shown in Figure 1, control part 6 too, relatively tail band circular arc and is formed on the direct of travel.When mobile device, for the operator, control part 6 hindered the visual field, difficult in the past.Therefore, the relative direct of travel of the upper base by making control part 6 reduces front end, is being with circular arc and tilts, and can guarantee operator's the visual field, avoiding barrier easily, mobile device.
<pillar 〉
According to Figure 11, Figure 12, Figure 13, the concrete formation of pillar is described.For elevating mechanism described later, each parts that is used for lifting action all are contained in the pillar 4.The pillar 4 that is formed with tubular accommodation section 51 and orbit portion 52 forms by drawing.This pillar 4 is formed by aluminium alloy.
Pillar 4 strikes out the formation tubular, and to have the cross section be orthogonal tubular accommodation section 51 and be provided with to extend to a direction from the side of tubular accommodation section 51,2 embedded grooves 52a that end forms to the state of internal bend.Side in tubular accommodation section 51 is formed on a plurality of depressions 53 of extending on the direction of principal axis by drawing.These depressions 53 become the outward appearance of pillar 4.
In addition, on the top of pillar 4, be provided for adjusting or checking the inspection window 54 of each parts in the pillar 4.This checks with window 54, after drawing, forms by machining.
And, on the top of pillar 4, be formed in tube portion, importing the peristome 55 that is connected the pulley line on the slide section.This peristome 55 after drawing, forms by machining.In the bottom of pillar 4, be fixedly mounted on gripper shoe 56 on the chassis by welding.
More than, can improve the outward appearance of pillar 4 integral body, widened the degree of freedom of the pattern of pillar 4.And orbit portion does not produce crooked yet, and the lifting action of X ray portion is successfully carried out.And, form pillar 4 owing to not welding, can make pillar 4 thin to the Min. that needs.Thus, when mobile device, because the pillar 4 that hinders the operator visual field is attenuated, can guarantee operator's the visual field, easily mobile device.
Here, the elevating mechanism in the pillar 4 is elaborated.Elevating mechanism has: the pillar 4 that the slide block 105 that comprises X ray generating unit 2 is moved, with by at one end fixedly first pulley line 71 of slide block 105 be connected with slide block 105, and be configured in the pillar 4 the balance portion (with reference to Figure 12) of the weight of support X ray generating unit 2.Pillar 4 with balance portion in the place ahead of chassis 5 the pillar installation portion with the bearing that can freely rotate is set around vertical axis, and this pillar installation portion is fixed in insertion.On the pillar installation portion, has the fixedly rotation base portion of bottom piece.Constitute thus, pillar 4 can serve as that axle freely rotates with its direction of principal axis.On chassis 5, have when the operator moves X-ray apparatus, promote the hand push handle of X-ray apparatus.
Balance portion as shown in figure 12, has wheel shaft 60 above pillar 4.Wheel shaft 60 is followed the lifting of the slide block 105 that arm 3 connects and is rotated, and has the end of the coiling fixedly big footpath pulley 61 of first pulley line 71 of slide block 105 and the path pulley 62 of big therewith footpath pulley 61 arranged coaxial.Below pillar 4, have circular cone pulley 63 and coaxial pulley 65.Circular cone pulley 63, the rotation of the big footpath pulley 61 by following slide block 105 liftings, the end of reeling is fixed on the 2nd pulley line 72 (together) on the path pulley 62, and by making moment variations, the active force that makes extension spring 64 described later is certain, and transmits to X ray portion.Coaxial pulley 65 is with circular cone pulley 63 arranged coaxial.Pars intermedia at pillar 4 has extension spring 64.Extension spring 64 is followed the lifting of slide block 105 and is stretched, the active force when flexible, the weight of support X ray generating unit 2 and aperture portion 1.Lower side end at this extension spring 64 has movable pulley 66.Extension spring 64 is fixed on the coaxial pulley 65 by an end, and pars intermedia hangs over the 3rd pulley line 73 on the movable pulley 66 and reels on coaxial pulley 65 or extract out, and stretches.
In the present embodiment, by 4 links 67, will have the upper mass 68 of wheel shaft 60; Bottom piece 69 with circular cone pulley 63 and coaxial pulley 65; Connect as one with pars intermedia piece 70 with extension spring 64.In the present embodiment, dispose link 67 abreast with the direction of principal axis of pillar 4, can in the rectangle that 4 links 67 are made, hold pars intermedia piece 70.In addition, link 67 uses the metallic plate that forms the cross section shape in order to improve intensity.Below, each piece is described.
In the present embodiment, the wheel shaft 60 that upper mass 68 is had, be the diameter of big footpath pulley 61: the parts of the diameter of path pulley 62=2: 1, has the pulley duct 62a (together) on the periphery that is used for that first pulley line 71 is wound in the pulley duct 61a on the periphery of big footpath pulley 61 and second pulley line 72 is wound in path pulley 62.
These pulleys 61 and 62 connect by key.Wheel shaft 60 is supported on the framework 68b of cross section shape rotationally, and this framework 68b has bearing 68a on relative side, has the baffle plate 68c that cuts out with the breach of wheel shaft 60 matched shapes in face side (side relative with slide block 105).In the present embodiment, the lateral width of framework 68b and bottom surface size, with the big or small fit of pars intermedia piece 70, the part of big footpath pulley 61 is not covered by the side of framework 68b.Below this framework 68b lateral, with the relative mode fixed connecting part 67 of per two difference.
Above wheel shaft 60, has the cap 68d in suitable pillar 4 cross sections.The inboard of cap 68d adapts with the circular arc of big footpath pulley 61, is provided with breach 68e.Therefore, do not need convex-concave to be set, can make the length of the lateral above-below direction of framework 68b become shorter, can make upper mass 68 miniaturizations and more attractive in appearance on the surface of cap 68d.
In the present embodiment, the circular cone pulley 63 that bottom piece 69 has has spiral goove 63a, and it is used on periphery second pulley line 72 of reeling, and the active force that can make extension spring 64 is for certain, and the moment of transmitting to X ray portion suitably changes.In addition, in the present embodiment, use 2 the 3rd pulley lines 73, coaxial 2 coaxial pulleys 65 that possess with the footpath on circular cone pulley 63,1 pulley line so that 1 pulley is reeled.This coaxial pulley 65 has pulley duct 65a too on periphery.These circular cone pulleys 63 and coaxial pulley 65 connect by key 63b.In addition, circular cone pulley 63 and coaxial pulley 65, identical with wheel shaft 60, be supported on rotationally on the framework 69b of cross section shape, this framework 69b has bearing 69a on relative side, on the bottom surface of framework 69b, have the fixed part 69c of the 3rd pulley line 73.Above the side of this framework 69b, with the relative mode fixed connecting part 67 of per two difference.
Such bottom piece 69 is fixed on the plate 69e of toroidal, and plate 69e is fixed on the rotation base portion with pillar installation portion of chassis 5 (not shown), and supporting mechanism is an axle with the direction of principal axis of pillar, can rotate.
Pars intermedia piece 70, configuration extension spring 64 in the rectangle that 4 links 67 are made.Extension spring 64 can produce the active force of the weight that is enough to support X ray portion.In the present embodiment, extension spring 64 is following is configured in the rectangle that link 67 makes.At the two ends of extension spring 64, the center of being embedded in has the fixed block of screw.On the other hand, make the slotting bottom surface that leads to the framework 68b of upper mass 68 of pitman 64b of hex bolts shape, pitman 64b is fixed on the bottom surface of framework 68b by fastening nut 68f with long threaded portion.By the fixed block 64b of upper side is installed on this pitman 64b, extension spring 64 with the state configuration that hangs down from pitman 64b in the bottom surface of the framework 68b of upper mass 68.By such formation, can adjust the length of the original state of extension spring 64 by the amount of tightening of pitman 64b.
In the present embodiment, up the fixed block of side above, the configuration with 4 matched orthogonal plate 64c of shape that link 67 is made, be fixed on this fixed block by bolt 64d.Plate 64c is configured to link 67 slips relatively, is not fixed on the link 67.By this formation, when the original state of extension spring 64 being adjusted etc., when the position of extension spring 64 was moved up and down, extension spring 64 can move along the direction of principal axis of pitman 64b, can make the direction of principal axis of extension spring 64 and the direction of principal axis keeping parallelism of pitman 64b.
On the fixed block of lower side, have movable pulley 66, it can be the bearing 64e that axle rotates with the direction of principal axis (direction of principal axis of pitman 64b) of extension spring 64 that movable pulley 66 has.
Then, the connection status to each pulley describes.In the present embodiment, slide block 105 is connected by first pulley line 71 with big footpath pulley 61, and path pulley 62 is connected by second pulley line 72 with circular cone pulley 63, and coaxial pulley 65 is connected by the 3rd pulley line 73 with extension spring 64.
One end of first pulley line 71 is fixed on the pulley line fixed part 105a of slide block 72, and the other end is fixed on the big footpath pulley 61.Fixing on big footpath pulley 61 is identical with the situation of coaxial pulley 65 described later.Though make first pulley line, 71 bendings of slide block 105 sides, in fact,, reeled by big footpath pulley 61 with the direction of principal axis almost parallel ground configuration of pillar 4.
One end of second pulley line 72 hangs over the breach on the flange part that is arranged at path pulley 62, and end is fixed on the fixed part 62b.The other end of second pulley line 72 hangs over the breach 63d on the flange part that is arranged at circular cone pulley 63, and end is fixed on the fixed part 63c.In the present embodiment, second pulley line 72 uses 2.
Therefore, stagger circumferencial direction and are provided with in each pulley 62 and 63 fixed position.And make 2 pulley line close winds on each pulley 62 and 63.In the present embodiment, the path pulley 62 of wheel shaft 60 and circular cone pulley 63 are configured to make pulley duct 62a and spiral goove 63a almost parallel.Therefore, follow the lifting of X ray portion, second pulley line 72 is reeled, and during extraction, 2 second equidirectional the moving in pulley line 72 almost parallel ground between path pulley 62 and circular cone pulley 63 can not twisted strength.
One end of the 3rd pulley line 73 hangs over the breach on the flange part that is arranged at coaxial pulley 65, and end is fixed on the fixed part 65b.The other end of the 3rd pulley 73 is inserted crooked guide block 69d and the fixed part 69c of logical one side, fixation ends.Owing to have guide block 69d, can prevent another distolateral being wrapped on the coaxial pulley 65 of the 3rd pulley line 73.In the present embodiment, the 3rd pulley line 73 also uses 2, and each pulley line is reeled by different coaxial pulley 65 respectively.And in the present embodiment, parallel on the periphery of movable pulley 66 have 2 pulley duct 66a, and the pars intermedia that an end is fixed on 2 the 3rd pulley lines 73 on each coaxial pulley 65 hangs on each pulley duct 66a.In the present embodiment, in original state, coaxial pulley 65 and movable pulley 66 are configured to make pulley duct 65a and pulley duct 66a almost parallel.In addition, movable pulley 66 can serve as that axle rotates with the direction of principal axis of extension spring 64.Therefore, follow the lifting of X ray portion, reel, when extracting the 3rd pulley line 73 out, 2 the 3rd pulley lines 73 can be pulled out at follow-up pulley 66 places, keeping parallelism between coaxial pulley 65 and movable pulley 66 and moving.
Then, the assembling sequence to balance portion describes.At first, embed fixed block, plate 64c at one end is installed, movable pulley 66 is installed at the other end at the two ends of extension spring 64.On the pulley 61 of big footpath, fix an end of first pulley line 71, on path pulley 62, fix an end of second pulley line, wheel shaft 60 is configured on the framework, form upper mass 68.On coaxial pulley 65, fix an end of the 3rd pulley line 73, circular cone pulley 63 and movable pulley 65 are configured on the framework 69b, form bottom piece 69, be fixed on the plate 69e.Fixedly connected excellent 64b on the bottom surface of the framework 68b of upper mass 68 is by the pitman 64b fixing above-mentioned extension spring 64 (formation of pars intermedia piece 70) that hangs down.Fixed connecting part 67 on framework 68b and framework 69b connects upper mass 68, bottom piece 69, pars intermedia piece 70.
Another distolateral being suspended on the movable pulley 66 of the 3rd pulley line 73 of will be through twining allowance drawing from coaxial pulley 65 is fixed on the fixed part 69c through guide block 69d.Then, another distolateral being wound on the path pulley 62 of second pulley line 72 of will be through twining allowance drawing from circular cone pulley 63, end is fixed on the fixed part 62b.At this moment, can carry out the adjustment of pulley line 72,73 and extension spring 64 etc.First pulley line 71 is wound on the big footpath pulley 61, constitutes balance portion.In the present embodiment, because as mentioned above, not in pillar 4, and outside pillar 4, assemble balance portion, thereby assembly operation is good.
As above the balance portion of Gou Chenging inserts the peristome of pillar 4 and disposes fixing from upper mass 68 sides.Then, movably the slide block 105 of X ray portion is installed on the pillar 4.On the slide block 105 of the state of lifting, constitute moving X-ray inspection apparatus of the present invention by being wound on another distolateral drawing of first pulley line 71 on the big footpath pulley 61, and being fixed on to be in until the pillar upper end.
In the present embodiment, pillar 4, the cross section is a rectangle, axially has the embedded grooves of sliding shoe 105, and sliding shoe 105 can be moved in the front, and slide block 105 can not fallen.
Slide block 105 with face that pillar 4 contacts on have roller 105b, 105c, make the contacts side surfaces of the embedded grooves of roller 105b and pillar 4, roller 105c is contacted with the front of ditch, and advances.In addition, have release mechanism on slide block 105, it is when fractures such as each pulley line 71~73 and extension spring 64, and anti-limited slip block 105 descends rapidly.Particularly, on the back side of slide block 105 (face relative), have projecting plate 105d, fix by pulley line fixed part 105a and spring members 105e in the direction outstanding from the back side with pillar 4.This projecting plate 105d is configured to do the time spent effectively on first pulley line 71 of pulley line fixed part 105a, adjusts the active force of spring members 105e, and does not contact with pillar 4.Yet when first pulley line, 71 grades ruptured, by the active force of spring members 105e, projecting plate 105d gave prominence to and blocks from the front of pillar 4, prevents falling of X ray portion thus.
Moving X-ray inspection apparatus of the present invention with above-mentioned formation, if slide block 105 moves down and make X ray generating unit 2 to descend along pillar 4, big footpath pulley 61 rotates extraction first pulley line 71.Path pulley 62 rotates simultaneously, second pulley line 72 of reeling, and circular cone pulley 63 rotates extraction second pulley line 72.In addition, simultaneously coaxial pulley 65 rotates, the 3rd pulley line 73 of reeling, and draw movable pulley 66 downwards, extension spring 64 is stretched downwards as a result, produces active force.By this active force, X ray generating unit 2 stops and keeping at the height of expectation.At this moment owing to use movable pulley 66,1/2 of the length of coaxial pulley 65 coilings of extension spring 65 elongations the 3rd pulley line 73b, and active force increase.Therefore, the active force of extension spring 64 changes according to the amount of movement of slide block 105, but in the present invention, makes moment variations by circular cone pulley 63, thus, the power of the weight of support X ray generating unit 2 can be remained necessarily.
The invention described above moving X-ray inspection apparatus can make the up-downgoing journey become longer, and the diameter of circular cone pulley is diminished, and makes the width of pillar and thickness become littler.Therefore, can guarantee good field of front vision.In the above-described embodiments, represented to use the device of extension spring, but also can replace with the compression spring.
More than, at least possess 2 knobs 11,12 by outer peripheral face in aperture portion 1, possesses X ray photography conditions configuration part in said aperture portion, and punching press forms X ray generating unit 2 or pillar 4, when device is mobile, guarantee operator's the visual field, can realize improving the operability of moving X-ray inspection apparatus.
Though represented concertina type that arm 3 is moved vertically relative to pillar 4, by making arm 3 relative pillar 4 translation-angles, the rocker arm type that X ray generating unit 2 is moved up and down also can be implemented the present invention certainly.