CN2111097U - X-ray head angle location fixer - Google Patents

Abstract

The utility model discloses an X-ray head roentgenography angle location fixer, comprising bearing sets, an angle plate, a head clamp, a head clamp base, a total base, a base plate, etc. As two mutually vertical bearing sets are used, the rear end of the angle plate is welded on the X shaft of the bearing sets, and thus the angle plate is enable to have spatialization function, and the angle plate can rotate by reeling a Y shaft and as well as rotate by reeling the X shaft simultaneously. The utility model overcomes the limitation of similar device which only can carry out plane location function in the prior art, the application range is enlarged, the X-ray head roentgenography quality is improved, the operation is convenient, and the use is convenient. The utility model not only can be used for conventional medical diagnosis inspection, but also can meet the requirement of scientific research.

Description

X-ray head angle location fixer

This utility model relates to the auxiliary device that the X line is taken the photograph sheet, belongs to medical mechanical domain.It is specially adapted to X the end of a thread cranium and takes the photograph the angle orientation holder that sheet is used.

When existing head X line is taken the photograph the sheet inspection, the head-clamp (seeing " X ray examination technology " book) that uses is because it lacks angle positioning function, and can not be used for the head specific position, as mastoid process, canalis opticus, the throwing at positions such as auditory ossicles is shone, therefore, throw when shining at these positions at present, how to locate by range estimation, two parts of patent documentations of CN2079023U that has announced recently and CN2089791U disclose a kind of positioner of X the end of a thread cranium, they are than going a step further before method of having narrated in the textbook and the measure, can solve the angle orientation problem of taking the photograph the part in the sheet at X the end of a thread cranium, as if comparing from these two parts of documents, the latter understands even better in performance, yet they can only solve the angle orientation problem that X the end of a thread cranium is taken the photograph a face in the sheet, therefore when relating to the space angle location of X the end of a thread cranium, shooting all also needs to help by range estimation, because range estimation owes accurate, and there is not a fixture, therefore patient because nervous, and because psychology, the small variations that factors such as physiology cause, all will bring quality problems, have influence on the accuracy on the medical diagnosis to the sheet of taking the photograph of X the end of a thread cranium.

In order to overcome the problems referred to above, the purpose of this utility model is the angle orientation holder of a kind of X the end of a thread cranium of development, so that patient's head is taken the photograph in the sheet process at whole X line, keeps its space orientation requirement accurately.

The technical scheme that realizes this utility model purpose is such:

X the end of a thread cranium angle orientation holder is made up of bearing group, angle board, head-clamp, head-clamp base, total base, base plate etc., it is characterized in that:

(1) bearing group is with two mutually perpendicular bearings, be welded with two iron plates in its outer ring, on Y-axis is held, total base cross bar be installed, and be provided with the Y-axis chute thereon, X-axis and Y-axis angle index dish are installed on the bearing group shell, and on shell, there is a hold-down screw X-axis top, the Y-axis angle indicator is △ shape, just can be with in the Y-axis chute, slide, on X-axis, be welded with X-axis connecting rod and angle indicator with bearing group;

(2) angle board is by housing, inner panel and fixed block are formed, housing is a metal rack structure, be rectangle, before dividing, after, four limits, side, be welded on the end of back on the X-axis connecting rod, the four corners position of housing is sealing, four jiaos of upper and lower surfaces of housing all have the head-clamp base jack, and pro-two fillet welding upper support angle bar, all the other are open type sandwich, be provided with translot on two sheet bars of walking crosswise before and after it, inner panel is made up of inner panel body and the inner panel pivot button that is welded in its two sides one end, inner panel pivot button is formed by managing in wing trocar sheath of pivot button that has double-deck wing ferrum and the hinge, at two wing iron plate centers projection is arranged, one projection hold-doun nut is arranged on projection, also be connected with an angle indicator board on a wing trocar sheath therein, it is inner panel angle index dish, the pipe outer end also is connected to inner panel angulation knob and inner panel angle indicator in this, the inner panel body is made of the lucite that interior plate framework and riveting are contained in the framework two sides, put the magazine of X line egative film in the framework into, all indicate the sign of magazine scope at inner panel body upper and lower surface, both sides one side all is welded on the interior pipe of inner panel pivot button before and after it, fixed block is rectangular square shape, it highly just can imbed in the interlayer of housing, its upper and lower surface minor face one side respectively has a projection, this projection is a little garden cylindricality, just can be enclosed within the fixed block kick trepanning of top and bottom, vertical framework two ends of housing, inner panel, housing is same thickness, and fixed block and interior plate framework, housing interlayer sustained height;

(3) head-clamp is a rectangular shape, by two build clamping plate, the head-clamp sleeve pipe, garden, graticule angle plate, compositions such as earplug, the head-clamp plate is to be made by organic transparency glass plate, and be riveted on the head-clamp sleeve pipe, the head-clamp sleeve pipe is to be enclosed within on the longitudinal rod of head-clamp base, and be screwed, head-clamp plate middle part is provided with a pod, its width is a bit larger tham 1.5 centimetres, respectively there is delegation's projection tenon the pod both sides, can be embedded in the groove of garden, graticule angle plate, digital calibration is carved with in the pod both sides, be carved with graticule angle warp on the plate of garden, graticule angle, the diameter of garden, graticule angle plate equates with the width of head-clamp plate, there is an aperture at the center, the diameter in hole is at 1.5-1.6 centimetre, on the plate of garden, graticule angle, be provided with groove, match with the protruding tenon on the head-clamp plate, earplug is by the earplug inserted link, the earplug trocar sheath, the compression spring, compositions such as sponge cover, the earplug inserted link is the T font, the fluted sponge cover that puts of its head, earplug inserted link middle part has a kick, afterbody to be garden medicated cap shape, and the earplug trocar sheath is the garden tubular, its head has interior page or leaf, outer page or leaf, the two groups of page or leaf sheets in these front and back are decussation, and its body has L shaped groove, and an aperture is arranged at the bottom, be used for by the earplug inserted link, the compression spring is to be enclosed within outside the earplug inserted link, and between earplug inserted link and earplug trocar sheath, spring one end withstands on the center small garden hole periphery of garden, graticule angle plate, the other end is connected in the kick at earplug inserted link middle part, the sponge cover is enclosed within the head of earplug inserted link, and it is to contract in the hole, pod garden of head-clamp plate and garden, graticule angle plate when not inserting patient's external auditory meatus;

(4) head-clamp base, by four garden bars and head-clamp base vertical pole sleeve pipe are formed mobilizable framework in length and breadth, there is fixedly inserted link of head-clamp base at the cross bar two ends, insert the head-clamp base jack of housing, and fix with the inserted link fixed screw, head-clamp base vertical pole two ends are furnished with sleeve pipe, and being enclosed within has fixed screw to fix on the cross bar;

(5) total base, by total base lateral mass, total base cross bar, total base vertical pole, the angle board support rail, support loop bar, compositions such as telescopic supporting rod, total base lateral mass is half garden shape metal derby, the hole, garden is arranged in the middle, total base lateral mass is welded on the base plate, total base vertical pole leans on two vertical pole casing pipe sleeves on cross bar, this vertical pole far-end has a backing plate, the angle board support rail leans on the support rail casing pipe sleeve on total base vertical pole, support loop bar and be T font hollow pipe, its lateral part is enclosed within on the angle board support rail, telescopic supporting rod is to be enclosed within the longitudinal component that supports loop bar, and withstand on the interior spring of loop bar, its lengthwise position is fixed by the fixed screw that supports on the loop bar;

(6) base plate is by the fixing tenon of base plate, base plate, compositions such as reflecting mirror picture frame, reflecting mirror, be welded with fixedly tenon of two base plates in the both sides, bottom surface of base plate broadside side, imbed the base plate holddown groove of having dug on the filter line bed, reflecting mirror lies on the base plate, and periphery has picture frame to fix.

Fig. 1 is three-dimensional total figure of X the end of a thread cranium angle orientation holder

Fig. 2 is the bearing group schematic perspective view

Fig. 3 is the outer parallax stereogram of bearing group

Fig. 4 is the sketch map of inner panel and magazine

Fig. 5 is the three-dimensional assembling of an angle board sketch map

Fig. 6 is an inner panel pivot button left installation diagram

Fig. 7 is fixed block figure

Fig. 8 is the right-hand installation diagram of inner panel pivot button

Fig. 9 head-clamp and accessory figure thereof

Figure 10 is head-clamp plate and accessory figure thereof

Figure 11 is graticule angle radial line and garden plate groove sketch map

Figure 12 is earplug and accessory sketch map

Figure 13 is head-clamp plate and garden, graticule angle plate vertical view

Figure 14 is head-clamp and each accessory assembling sketch map of earplug

Figure 15 is head-clamp base assembling sketch map

Figure 16 is head-clamp angle indicating dial figure

Figure 17 is head-clamp base fixedly inserted link and inserted link fixed screw figure

The total base assembling of Figure 18 sketch map

Figure 19 is telescopic supporting rod and support rail sleeve pipe assembling sketch map

Illustrate:

1－ 2－ 3－Y 4－X 5－Y 6－X 7－Y 8－Y 9－ 10－X 11－X 12－ 13－ 14－ 15－ 16－ 17－ 18－ 19－ 20－ 21－ 22－ 23－ 24－ 25－ 26－ 27－ 28－ 29－ 30－ 31－ 32－X 33－ 34－ 35－ 36－ 37－ 38－ 39－ 40－ 41－ 42－ 43－44－ 45－ 46－ 47－L 48－ 49－ 50－ 51－ 52－ 54－ 55－ 56－ 57－ 58－ 59－ 60、61－ 62、63－ 64、65－ 66、67－ 70－ 71－ 72－ 73－ 74－ 75－ 76－T 77－ 78－ 79－ 80－ 82－ 83－ 85－ 90－ 91－ 92－ 93－ 94－

Now with embodiment further to structure of the present utility model, operating position is described in detail:

Embodiment:

X the end of a thread cranium angle orientation holder is made up of bearing group, angle board, head-clamp, head-clamp base, total base, base plate etc.;

(1) bearing group 1 is with two mutually perpendicular bearings 3 and 4, is welded with two iron plates 2 in its outer ring, holds on 3 in Y-axis, total base cross bar 72 is installed, be provided with Y-axis chute 5 thereon,, X-axis and Y-axis angle index dish be installed on bearing group shell 9 to fix this bearing inner race, on shell 9, there is a hold-down screw 6 the X-axis top, and the Y-axis angle indicator is △ shape, just can be enclosed within the Y-axis chute, slide with bearing group, on X-axis, be welded with X-axis connecting rod 32 and angle indicator 11;

(2) angle board 12 is made up of housing 13 and inner panel, housing 13 is metal rack structures, be rectangle, before and after dividing, four limits, side, be welded on the end of back on the X-axis connecting rod 32, make this housing 13 not only can rotate but also can rotate around Y-axis around X-axis, be that it can be in space orientation, the angle of angle board spatial rotational can show on X-Y angle index dish, the four corners position of housing is sealing, four jiaos of upper and lower surfaces of housing all have the head-clamp base jack, and pro-two fillet welding upper support angle bar 31, remaining is an open type sandwich, be provided with translot 18 on two sheet bars of walking crosswise before and after it, can in its groove, slide for inner panel pivot button overcoat projection 21, inner panel is made up of inner panel body 19 and the same end inner panel pivot button 20 that is welded in its two sides, inner panel pivot button 20 is made up of pipe 24 in wing trocar sheath 23 of the pivot button that has double-deck wing ferrum and the pivot button, at two wing iron plate centers projection is arranged, it is pivot button overcoat projection 21, one projection hold-doun nut 22 is arranged on projection, after interior Board position is determined, this hold-doun nut 22 screws, make it under housing pivot button translot 18 internal fixation, also be connected with an angle indicator board on a wing trocar sheath therein, it is inner panel angle index dish 26, the pipe outer end also is connected to inner panel angulation knob 25 in this, and inner panel angle indicator 27, inner panel body 19 is made of the lucite 29 that interior plate framework 28 and riveting are contained in the framework two sides, can put the magazine 30 of dress X line egative film in the framework into, upper and lower surface at inner panel body 19 all indicates 5 * 7, the sign of 8 * 10 magazine scopes, the homonymy on both sides all is welded on the interior pipe of inner panel pivot button 20 before and after it, therefore what it can be along with inner panel pivot button is traversing, rotate and traversing rotation, fixed block 15 is rectangular square shape, it highly just can be embedded in the interlayer of housing and interior plate framework, on it, following two sides short brink respectively has a projection 16, projection is a little garden cylindricality, just can be enclosed within on the housing 13 vertical framework two ends, in the following fixed block kick trepanning 17, thereby fixed block 15 can rotate around kick 16, when inner panel body 19 desires are fixed into a plane with housing 13, can change in the long limit with fixed block 15, make it to be embedded between the interlayer of housing and interior plate framework and play fixation, at this moment, even inner panel 19 load-bearing also are unlikely rotation.When needs inner panel 19 turns an angle, for example when taking the photograph mastoid process Mayer's position sheet, head-clamp base vertical pole is moved to next door, go to parallelly with housing outside the fixed block length limit on four jiaos, the inner panel knob makes inner panel rotate to X-axis connecting rod opposite side, and it is traversing, move in the head-clamp base vertical pole 56 by X-axis connecting rod side, and be stuck between housing and the inner panel, make inner panel fixed angle bar, tighten hold-doun nut 22, inner panel can be fixed on the certain angle position.

(3) head-clamp 33, by head-clamp plate 34, head-clamp sleeve pipe 64,65, garden, graticule angle plate 38, earplug 41 compositions such as grade, head-clamp sleeve pipe 64 is made and be riveted on to head-clamp plate 34 by poly (methyl methacrylate) plate, on 65, making head-clamp plate 34 to make 180 degree at upper half-space rotates, and can be with reference to head-clamp angle indicating dial 58, by fixed screw 62,63 fix the rotational angle of head-clamp plate 34, head-clamp 33 is provided with garden, graticule angle plate 38, earplug 41 and make head-clamp possess the fixed point calibration line function, head-clamp plate 34 middle parts are provided with pod 35, its width is a bit larger tham 1.5 centimetres, respectively there is delegation's projection tenon the pod both sides, it is head-clamp plate tenon 37, can be embedded in the garden plate groove 39 of garden, graticule angle plate 38, digital calibration 36 is carved with in the pod both sides, in order to show the height of earplug 41 and garden, graticule angle plate 38, the diameter of garden, graticule angle plate 38 equates with the transverse width of head-clamp plate 34, there is an aperture at its center, this hole size should pass through the earplug inserted link 42 jars fixing interior page or leaf 48 of sleeve pipe beyond the Great Wall, garden, graticule angle plate 38 is by means of the embedding and can sliding up and down mutually of garden plate groove 39 and head-clamp plate 34, garden, graticule angle plate 38 is provided with garden, graticule angle plate radial line 40, can be during use as the line of reference of head normal line, head-clamp plate 34 transverse widths and garden, graticule angle plate 38 diameters, all about 15 centimetres, earplug 41 is by earplug inserted link 42, earplug trocar sheath 46, compression spring 50, sponge overlaps 51 compositions such as grade, earplug inserted link 42, be the T font, its head is fluted, can put sponge cover 51, there is a kick 44 at earplug inserted link middle part, afterbody is garden medicated cap shape, it is earplug inserted link tail medicated cap 43, earplug trocar sheath 46 is the garden tubular, the head of trocar sheath has fixing interior page or leaf 48 and fixes outer page 49, the two groups of page or leaf sheets in these front and back are decussation, when interior page or leaf 90 is spent bendings, earplug trocar sheath 46 is fixed on head-clamp plate 34 and garden, the graticule angle plate 38, its body has L shaped groove 47, earplug inserted link projection 44 can slide in L shaped groove, one aperture is arranged at the bottom of earplug trocar sheath 46, to pass through earplug inserted link 42, be enclosed within a compression spring 50 is arranged outside the earplug inserted link 42, it is between inserted link 42 and trocar sheath 46, spring one end withstands on hole, the garden periphery of garden, graticule angle plate 38, the other end then is connected on the earplug inserted link projection 44, earplug is fixed on the head-clamp, and can makes the resilient slip of earplug inserted link.Sponge cover 51 is enclosed within the head of earplug inserted link 42, when not inserting external auditory meatus at ordinary times, contracts in the hole, pod garden of head-clamp plate 34, garden, graticule angle plate 38, when being pushed insertion external auditory meatus, can make external auditory meatus exempt from damage.The tail medicated cap 43 of ear pushing plug inserted link 42 advances head-clamp plate inboard about 0.5 centimetre (the long edge lengths of L groove) and rotates earplug inserted link projection 44 is stuck on the minor face of L shaped groove 47 during use, the fixing degree of depth of earplug inserted link 42, during film making, should be the withdrawal of sponge earplug cover with the earplug head, and can not be fixed in the external auditory meatus.

(4) the head-clamp base 54, by four garden bars in length and breadth is head-clamp base cross bar 55, head-clamp base vertical pole 56, with head-clamp sleeve pipe 64,65,66,67 form mobilizable framework, the cross bar two ends have the head-clamp base fixedly inserted link 57 can insert head-clamp base jack on four jiaos of the housings from tow sides, and it is fixing with inserted link fixed screw 59, head-clamp base vertical pole two ends are furnished with sleeve pipe 66,67 be enclosed within can be traversing on cross bar on the cross bar, and fixed screw 60 arranged, 61 administration of fixed, head-clamp sleeve pipe 64 on cross bar, 65, be used for fixing head-clamp, it can rotate 180 degree and fixed screw 62 is arranged around cross bar, 63 is fixing.

(5) total base 70, by total base lateral mass 71, total base cross bar 72, total base vertical pole 73, angle board support rail 75, support loop bar 76, telescopic supporting rod 77 compositions such as grade, total base lateral mass 71 is half garden shape metal derby, but at its hole, garden, middle part 86 fixed transverse rod 72, total base lateral mass is welded on the base plate, total base vertical pole 73 is enclosed within on the cross bar 72 by two vertical pole sleeve pipes 83, total base vertical pole 73 far-ends are placed on total base vertical pole backing plate 74, angle board support rail 75 is enclosed within on total base vertical pole 73 by support rail sleeve pipe 85, support loop bar 76 and be T font hollow pipe, its lateral part is enclosed within on the angle board support rail 75, longitudinal component in supporting loop bar 76 is equipped with compression spring 82, the flexible loop bar that supports is to be enclosed within the longitudinal component that supports loop bar and to withstand on the spring in the loop bar, its lengthwise position is fixing by the fixed screw 78 that supports on the loop bar 76, ultimate range between two angle board support bars should be wider than the wide footpath of angle board, total base just can go to opposite side, thereby can increase the support scope of support bar.

(6) base plate 90, fixedly tenon 92, reflecting mirror picture frame 93, reflecting mirror 94 etc. are formed by base plate 91, base plate, be welded with fixedly tenon 92 of two base plates in the both sides, bottom surface of base plate broadside side 91, imbed and dig good base plate holddown groove on the bed of filtering the line bed in advance, reflecting mirror 94 lies on the base plate, periphery has picture frame 93 fixing, and near the head pendulum position of magazine face accurately whether the reflecting mirror susceptible of proof.

When using this holder, should note emphatically:

(1) keep X ray tube centrage vertical,

(2) throw the different needs adjusting instrument that shines the position according to various heads,

(3) serve as with reference to putting, required head position can occur with each fixed point of head, standard flat or on line with head-clamp plate, earplug, garden, the graticule angle plate of this apparatus,

(4) accurately behind the pendulum position, the available head clamping plate are fixed.

The utility model advantage compared with prior art is:

(1), have spatialization function, the scope of application is big, can take over the many positions that can't accurately take, therefore except for the conventional medical examination, also can need for research work.

(2) behind the location, fixed function is arranged again, therefore, the pendulum position accurately and reliably.

(3) owing to be furnished with inner panel in the angle board, avoided image enlargement phenomenon after the space orientation, improved and taken the photograph tablet quality.

(4) instrumentation is easy to use.

Claims (1)

1, X the end of a thread cranium angle orientation holder is made up of bearing group, angle board, head-clamp, head-clamp base, total base, base plate etc., it is characterized in that:

(1) bearing group, be with two vertical bearings, be welded with two iron plates in its outer ring, on Y-axis is held, total base cross bar is installed, and be provided with the Y-axis chute thereon, and X-axis and Y-axis angle index dish are installed on the bearing group shell, a hold-down screw arranged in that shell is upper above X-axis, the Y-axis angle indicator is △ shape, just can be enclosed within the Y-axis chute, slide, welding X-axis connecting rod and angle indicator on X-axis with bearing group;

(2) angle board, by housing, inner panel and fixed block are formed, housing is a metal rack structure, be rectangle, before and after dividing, four limits, side, be welded on the end of back on the X-axis connecting rod, the four corners position of housing is sealing, four jiaos of upper and lower surfaces of housing all have the head-clamp base jack, and pro-two fillet welding upper support angle bar, all the other are open type sandwich, be provided with translot on two sheet bars of walking crosswise before and after it, inner panel is made up of inner panel body and the inner panel pivot button that is welded in its two sides one end, inner panel pivot button is formed by managing in wing trocar sheath of pivot button that has double-deck wing ferrum and the pivot button, at two wing iron plate centers projection is arranged, one projection hold-doun nut is arranged on projection, also be connected with an angle indicator board on a wing trocar sheath therein, it is inner panel angle index dish, the pipe outer end also is connected to inner panel angulation knob and inner panel angle indicator in this, the inner panel body is made of the lucite that interior plate framework and riveting are contained in the framework two sides, put the magazine that X line egative film is housed in the framework into, all indicate the sign of magazine scope at inner panel body upper and lower surface, both sides one side all is welded on the interior pipe of inner panel pivot button before and after it, fixed block is rectangular square shape, it highly just can imbed in the interlayer of housing, on it, following two sides short brink respectively has a projection, and this projection is a little garden cylindricality, just can be enclosed within on the vertical framework two ends of housing, in the following fixed block kick trepanning, inner panel, housing is same thickness, and fixed block and interior plate framework, housing interlayer sustained height;

(3) head-clamp, be rectangular shape, by two build clamping plate, the head-clamp sleeve pipe, garden, graticule angle plate, compositions such as earplug, the head-clamp plate is to be made and be riveted on the head-clamp sleeve pipe by organic transparency glass plate, the head-clamp sleeve pipe is to be enclosed within on the longitudinal rod of head-clamp base and to be screwed, head-clamp plate middle part is provided with a pod, its width is a bit larger tham 1.5 centimetres, respectively there is delegation's projection tenon the pod both sides, can be embedded in the groove of garden, graticule angle plate, digital calibration is carved with in the pod both sides, be carved with graticule angle warp on the plate of garden, graticule angle, the diameter of garden, graticule angle plate equates with the width of head-clamp plate, there is an aperture at the center, and the diameter in hole is provided with groove at 1.5-1.6 centimetre on the plate of garden, graticule angle, match with the protruding tenon on the head-clamp plate, earplug is by the earplug inserted link, the earplug trocar sheath, the compression spring, compositions such as sponge cover, the earplug inserted link is the T font, and its head is fluted, can put the sponge cover, there is a kick at earplug inserted link middle part, afterbody is garden medicated cap shape, and the earplug trocar sheath is the garden tubular, and its head has interior page or leaf, outer page or leaf, the two groups of page or leaf sheets in these front and back are decussation, and its body has L shaped groove, and an aperture is arranged at the bottom, be used for by the earplug inserted link, the compression spring is to be enclosed within outside the earplug inserted link, and between earplug inserted link and earplug trocar sheath, spring one end withstands on the center small garden hole periphery of garden, graticule angle plate, the other end is connected in the kick at earplug inserted link middle part, the sponge cover is enclosed within the head of earplug inserted link, and it is to contract in the hole, pod garden of head-clamp plate and garden, graticule angle plate when not inserting patient's external auditory meatus;

(4) head-clamp base, by four garden bars and head-clamp base vertical pole sleeve pipe are formed mobilizable framework in length and breadth, there is fixedly inserted link of head-clamp base at the cross bar two ends, insert the head-clamp base jack of housing, and fix with the inserted link fixed screw, head-clamp base vertical pole two ends are furnished with casing pipe sleeve has fixed screw to fix on cross bar;

(5) total base, by total base lateral mass, total base cross bar, total base vertical pole, the angle board support rail, support loop bar, compositions such as telescopic supporting rod, total base lateral mass is half garden shape metal derby, the hole, garden is arranged in the middle, total base lateral mass is welded on the base plate, total base vertical pole leans on two vertical pole casing pipe sleeves on cross bar, this vertical pole far-end has a backing plate, the angle board support rail leans on the support rail casing pipe sleeve on total base vertical pole, support loop bar and be T font hollow pipe, its lateral part is enclosed within on the angle board support rail, telescopic supporting rod is to be enclosed within the longitudinal component that supports loop bar and to withstand on the spring in the loop bar, and its lengthwise position is fixed by the fixed screw that supports on the loop bar;

(6) base plate, by base plate, base plate is tenon fixedly, compositions such as reflecting mirror picture frame, reflecting mirror; In the both sides, bottom surface of base plate broadside side, be welded with fixedly tenon of two base plates, imbed the base plate holddown groove of having dug on the filter line bed, reflecting mirror lies on the base plate, and periphery has picture frame to fix.

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