CN110779691B - Initializing and adjusting device for detecting optical performance of medical endoscope - Google Patents
Initializing and adjusting device for detecting optical performance of medical endoscope Download PDFInfo
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- CN110779691B CN110779691B CN201911076201.9A CN201911076201A CN110779691B CN 110779691 B CN110779691 B CN 110779691B CN 201911076201 A CN201911076201 A CN 201911076201A CN 110779691 B CN110779691 B CN 110779691B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses an initializing and adjusting device for detecting optical performance of a medical endoscope, which comprises a first angle adjusting device (5) for adjusting the angle of the endoscope, a second angle adjusting device (6) for adjusting the angle of a measuring plate, a linkage mechanism (7) for realizing synchronous linkage of the first angle adjusting device and the second angle adjusting device and an angle fine adjusting structure (8) for fine adjusting the rotation of the linkage mechanism (7).
Description
Technical Field
The invention relates to the field of optical equipment detection, in particular to an initialization adjusting device for detecting optical performance of a medical endoscope.
Background
Along with the rapid development of medical technology, the medical electronic endoscope can flexibly enter each cavity hole of a human body to display images of the cavity holes of the human body with high definition, so that the medical electronic endoscope is widely applied clinically. However, with the popularity of this technology, its optical performance has a crucial impact on the diagnostic safety of patients. Aiming at the problem, the national and industry jointly establish the detection standard, so that the purposes of daily maintenance, detection and reception, fault diagnosis and the like of the optical performance of the electronic endoscope are achieved, the electronic endoscope is always in the optimal performance state, and medical accidents caused by quality problems of the electronic endoscope are reduced. Because of the importance of endoscope optical performance detection, many studies have been conducted.
For example: application number: 201910069511.1 discloses a detection device and a detection method for optical performance of a medical endoscope, wherein the detection device comprises a camera module, a motion adjustment module, a handheld device and intelligent equipment, the camera module is fixedly connected with a connecting pipe through the motion adjustment module, the other end of the connecting pipe is fixedly connected with the handheld device, the camera module is connected with the intelligent equipment through a signal transmission module, the motion adjustment module is connected with the handheld device through a wire, the camera module is set to be a miniature camera, lighting equipment is further arranged on the side face of the camera module, the lighting equipment is set to be a waterproof LED lamp, the camera module and the lighting equipment are both arranged in a protective shell connected with one side of the motion adjustment module, and the protective shell adopts a scratch-proof and oil stain-proof glass shell. The device and the method for detecting the optical performance of the medical endoscope can well shoot, so that more accurate information can be obtained.
Application number: 201420642156.5 discloses a detection device for optical performance of a medical endoscope, which aims at the problems of high detection speed of a view angle, suitability for detection under qualitative conditions and high precision, and is simple to operate, greatly reduces the detection cost and ensures that errors of equipment are consistent by centralizing a plurality of detection items in one detection equipment. It includes chassis, guide rail, slider, articulamentum, baffle, mark target support, support frame, and the support frame is fixed on the chassis and is equipped with the shade on the support frame, and the protruding part at chassis middle part is guide rail, slider slip on the guide rail, and the articulamentum is on the slider and have the recess, and the endoscope is put in the recess, mark target support fixes the one end at the guide rail, marks target through mark target support height-adjusting, and two baffles come the centre gripping articulamentum in the both sides of guide rail, and two sides of articulamentum are equipped with a plurality of location portions correspondingly, connect articulamentum and baffle through the locating shaft that passes the location portion.
Application number: 200720083105.3 discloses a detector for detecting the optical performance of a medical hard tube endoscope, in particular to a detector for detecting the visual angle and the visual direction angle of the medical hard tube endoscope, which consists of a turntable with a collimator, a bracket, a guide rail and the like. The signal output line of the photoelectric shaft angle code wheel and the power line of the rotating motor are connected with the control box. A control switch, a computing chip and a data display screen are arranged in the control box. The operator controls the turntable with collimator to rotate or stop through the control box, and transmits the electric signals of the direction and angle of each rotation to the control box, so that the calculation chip in the control box automatically calculates and then sends the data of the angle of view and the angle of view to the display screen. The utility model has the advantages of high detection precision, convenient operation and automatic calculation and direct display of detection data.
However, in the process of detecting the optical performance of the medical hard tube endoscope, the initial adjustment is needed first, which comprises the following steps: the central axis of the view field is regulated to coincide with the center of the measuring standard, and the central axis of the view field is vertical to the measuring standard plate, so that the medical hard tube endoscope is clamped and fixed before detection, the geometric parameter requirements of the two points are ensured, and the view direction angle is the included angle between the geometric axis of the head end part of the endoscope insertion part and the optical axis of the objective lens at the front end part of the endoscope. Endoscopes are classified into a direct view type, a oblique view type, a side view type, and the like according to the observation direction, and common view angles include 0 °,6 °, 12 °, 25 °, 30 °,45 °, 70 °, 90 °, and the like. However, the angle range of the view angle of most medical hard tube endoscopes is 0-90 degrees, and the angle of the measuring plate is simply adjusted by the existing structure so as to adapt to the view angle of the medical hard tube endoscopes, but when the angle range of the view angle of the medical hard tube endoscopes is overlarge (more than 45 degrees), the adjustment of the measuring plate is complex, the requirement of rapid adjustment cannot be met, and the working efficiency of the early stage of the optical performance process of the medical hard tube endoscopes is reduced.
Disclosure of Invention
The invention aims to provide an initializing and adjusting device for detecting optical performance of a medical endoscope, which is suitable for initializing and adjusting the endoscope with a large angle of view.
The invention solves the problems by adopting the following technical scheme:
An initializing and adjusting device for detecting optical performance of a medical endoscope is characterized in that: including adjusting the first angle adjusting device of endoscope angle, adjusting the second angle adjusting device of surveying the target angle, realizing first, second angle adjusting device synchronous linkage's link gear and fine setting link gear's pivoted angle fine setting structure, wherein: the sliding seat is linearly and slidably arranged on the base, the first angle adjusting device comprises a first transmission screw rod, a first transmission nut, a first connecting seat, a first supporting rod and a first rotating plate, the first transmission screw rod is rotatably arranged on the sliding seat, the first transmission screw rod and the first transmission nut are in threaded fit, the first transmission nut is fixed on the first connecting seat, the first connecting seat is linearly and slidably arranged on the sliding seat, one end of the first connecting seat is hinged with one end of the first supporting rod, the other end of the first supporting rod is hinged with the first rotating plate, the first rotating plate is hinged with the sliding seat, the endoscope is fixed on the first rotating plate through a fixing device, the first transmission screw rod is rotated to drive the first transmission nut and the first connecting seat to linearly move, so as to drive the first supporting rod to prop up the first rotating plate, and the first rotating plate is rotated, thereby adjusting the angle of the endoscope, the second angle adjusting device comprises a second transmission screw, a second transmission nut, a second connecting seat, a second supporting rod and a second rotating plate, the second transmission screw is rotatably arranged on the base, the second transmission screw and the second transmission nut are in threaded fit, the second transmission nut is fixed on the second connecting seat, the second connecting seat is linearly and slidably arranged on the base, one end of the second connecting seat is hinged with one end of the second supporting rod, the other end of the second supporting rod is hinged with the second rotating plate, the second rotating plate is hinged with the base, the measuring mark plate is arranged on the second rotating plate, the first rotating plate is in a horizontal state in an upright state, the second rotating plate is rotated by rotating the second transmission screw, the second transmission nut and the second connecting seat are driven to linearly move, thereby driving the second supporting rod to prop up the second rotating plate, the second rotating plate is enabled to rotate, the angle of the measuring plate is adjusted, the first transmission screw is fixed to coarsely adjust the rotating disc, the first transmission screw is arranged in a linkage mode through the second transmission screw of the linkage mechanism, the first transmission screw is arranged horizontally, the second transmission screw is arranged vertically, and the following formula is met in the rotation process of the first angle adjusting device and the second angle adjusting device: α m＝αn, and α m/βm＝αn/βn, wherein: alpha m is the rotation angle of the first drive screw, beta m is the rotation angle of the first rotation plate, alpha n is the rotation angle of the second drive screw, and beta n is the rotation angle of the second rotation plate.
The linkage mechanism comprises a spline shaft and a spline shaft sleeve, wherein the spline shaft and the spline shaft sleeve are sleeved, a first transmission screw is fixed at one end of the spline shaft, a first bevel gear and a second bevel gear are fixed on the spline shaft sleeve, a third bevel gear is fixed at the lower end of the second transmission screw, the third bevel gear is meshed with the first bevel gear, the angle fine adjustment structure comprises an adjusting rod, a fine adjustment rotating disc and a fourth bevel gear, the adjusting rod is rotatably installed on the base, the fine adjustment rotating disc is fixed at one end of the adjusting rod, the fourth bevel gear is connected with the other end of the adjusting rod, and the fourth bevel gear is meshed with the second bevel gear. The linkage mechanism is simple in structure, sliding connection of the sliding seat and the base is not affected, the first transmission screw and the second transmission screw are guaranteed to rotate at the same angle, the fine adjustment rotary disc is arranged, the fourth bevel gear is driven to rotate through rotation of the fine adjustment rotary disc, and then the second bevel gear is driven to rotate, so that the first transmission screw and the second transmission screw are driven to rotate, the rotation angle of the first rotary plate and the rotation angle of the second rotary plate are regulated, and due to meshing of the fourth bevel gear and the second bevel gear, the large-angle rotation of the fine adjustment rotary disc is realized through the transmission ratio between gears, and the first transmission screw and the second transmission screw only rotate at a small angle, so that synchronous fine adjustment of the rotation angle of the first rotary plate and the rotation angle of the second rotary plate is realized. And a plurality of gears can be arranged between the fourth bevel gear and the second bevel gear, and the fourth bevel gear is finally connected with the second bevel gear through the meshing of the gears in sequence, so that a larger transmission ratio is realized, and the fine adjustment progress can be further improved.
The second rotating plate is connected with a measuring standard mounting plate for fixing a measuring standard plate through two connecting rods, the upper left end and the upper right end of the second rotating plate are respectively fixed at one ends of the two connecting rods, two ball seats are fixed on the measuring standard mounting plate, ball grooves are formed in the ball seats, the two connecting rods all penetrate through mounting holes of the measuring standard mounting plate, the other ends of the two connecting rods are fixed with ball heads, the ball heads are located in the ball grooves, connecting rod compression springs are sleeved on the connecting rods, two ends of each connecting rod compression spring respectively support against the measuring standard mounting plate and the second rotating plate, fine-tuning cams are rotatably mounted on the second rotating plate, and cam handles are fixed on the fine-tuning cams. By adopting the structure, the fine adjustment cam can stir the second rotating plate by rotating the cam handle, so that the angle of the second rotating plate is finely adjusted. And the two connecting rods all pass through the mounting holes of the measuring standard mounting plate, the other ends of the two connecting rods are fixed with the ball heads, and the ball heads are positioned in the ball head grooves, so that the mounting of the second rotating plate is realized, and the fine adjustment of the angle of the second rotating plate is not influenced. Further, preferably, the gauge mounting plate is provided with a plugging slot for plugging in the gauge plate.
Further, as the preference, slidable mounting has linear guide block on the first pivoted plate, and the sliding tray has been seted up to linear guide block, and fixing device slidable mounting is on linear guide block, still includes distance compensation mechanism, distance compensation mechanism includes first gear, second gear, third gear, fourth gear and rack, and the other end of first bracing piece is fixed with first gear, rotates on the first pivoted plate has second gear, third gear and fourth gear, and third gear and fourth gear are fixed coaxially, and first gear and second gear engagement, second gear and third gear engagement, the lower extreme of linear guide block is fixed with the rack, rack and fourth gear engagement. By adopting the structure, when the first supporting rod rotates, the rack is driven to move by the meshing of the gears, so that the linear guide block and the fixing device are driven to move linearly, the distance compensation is realized, and the optical axis of the objective lens at the front end part of the endoscope can be near a reasonable position.
Further, as the preference, install the manual fine setting slip table of biax on the base, be fixed with vertical board on the manual fine setting slip table of biax, through adjusting the manual fine setting slip table of biax, can realize that vertical board carries out the distance fine setting relative base left and right directions or upper and lower direction, second drive screw rotates and installs on vertical board, and second connecting seat straight line slidable mounting articulates in the upper end of vertical board on the upper end of second pivoted board.
Compared with the prior art, the invention has the following advantages and effects: the initialization adjusting device for detecting the optical performance of the medical endoscope can realize adjustment to the nominal viewing angle through synchronous rotation of 1/2 of the viewing angle of the endoscope and the measuring plate, improves the adjustment efficiency, and because the endoscope and the measuring plate rotate, the rotation adjusting range of the measuring plate only needs to rotate within the range of 0-50 degrees, the adjusting range is reduced, the structural design can be simpler, the operation is suitable for the adjusting requirement of the viewing angle of 0-90 degrees, the initialization adjusting requirement of the endoscope with the large angle viewing angle is met, and the adjustment efficiency is improved.
Drawings
Fig. 1 is a schematic view of an endoscope according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a connecting device according to an embodiment of the present invention.
Fig. 3 is a schematic side view of a connecting device according to an embodiment of the present invention.
Fig. 4 is a schematic view showing an internal structure of a connection device according to an embodiment of the present invention.
Fig. 5 is a schematic perspective view of a fixing device according to an embodiment of the present invention.
Fig. 6 is a schematic front view of a fixing device according to an embodiment of the present invention.
FIG. 7 is a schematic view of the mounting structure of the test mark mounting plate according to the embodiment of the invention.
Fig. 8 is a schematic structural view of a fine adjustment cam according to an embodiment of the present invention.
Fig. 9 is a schematic structural view of a spline shaft and spline shaft sleeve according to an embodiment of the present invention.
Fig. 10 is a schematic structural view of a distance compensation mechanism according to an embodiment of the present invention.
Numbering in the figures: the medical hard tube endoscope 1, the eyepiece interface 11, the light guide beam interface 12, the base 21, the sliding seat 22, the baffle 23, the guide sleeve 241, the sliding shaft 242, the sliding wheel 243, the fixing device 3, the mounting seat 31, the Y-shaped seat 32, the left sliding block 33, the left clamping block 331, the right clamping block 341, the right sliding block 34, the clamping adjusting screw 35, the left inclined pressing plate 361, the left connecting plate 362, the left sliding rod 363, the right inclined pressing plate 371, the right connecting plate 372, the right sliding rod 373, the linear guide block 38, the locking screw 39, the biaxial manual fine adjustment sliding table 4, the vertical plate 41, the first angle adjusting device 5, the first transmission screw 51, the first connecting seat 52, the first supporting rod 53, the first rotating plate 54, first gear 551, second gear 552, third gear 553, fourth gear 554, rack 555, rough adjustment rotary disk 56, second angle adjustment device 6, second drive screw 61, second connection seat 62, second support rod 63, second rotation plate 64, connection rod 65, measurement standard mounting plate 66, insertion groove 67, ball seat 681, ball groove 682, ball 683, connection rod compression spring 684, fine adjustment cam 685, cam handle 686, dial 691, scale indication mark 692, linkage 7, spline shaft 71, spline shaft sleeve 72, first bevel gear 73, second bevel gear 74, third bevel gear 75, angle fine adjustment structure 8, fine adjustment rotary disk 82, fourth bevel gear 83, measurement standard 9
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
The optical performance detection method of the medical endoscope in the embodiment is as follows:
Step one: the medical hard tube endoscope 1 is fixed and clamped on the fixing device 3, the measuring standard plate 9 (drawing a plurality of concentric ring patterns with numerical values on the measuring standard plate) is fixed on the measuring standard mounting plate 66,
The light source interface of the cold light source is connected with the light guide beam interface 12 of the endoscope, the signal interface of the imaging system is connected with the eyepiece interface 11 of the endoscope, the medical hard tube endoscope 1 is horizontally arranged at the moment, and the measuring standard mounting plate 66 is vertically arranged;
Step two: the fixing device 3 is controlled to rotate anticlockwise, the dial testing mounting plate 66 rotates clockwise at the same time, the rotation angles of the fixing device 3 and the dial testing mounting plate 66 are the same, the rotation angle of the fixing device 3 and the dial testing mounting plate 66 is 1/2 of the nominal viewing angle, and preliminary angle adjustment is completed;
Step three: observing the coordinate measuring board on the display equipment of the imaging system, realizing small-angle synchronous rotation of the fixing device 3 and the coordinate measuring mounting board 66 through the angle fine adjustment structure 8 with large transmission ratio, and linearly moving the fixing device 3 or the coordinate measuring device to enable the center of the endoscope and the center of the coordinate measuring board graph to be coaxial, namely enabling the excircle of the field of view of the endoscope to be coaxial with the coordinate measuring board graph;
step four, the nominal reading of the largest visible ring, i.e. the angle of the endoscope viewing angle, is read, and the rotation angle of the fixture 3 or the gauge mounting plate 66 is twice the angle of the endoscope viewing angle.
Further, the fixing device 3 and the measuring standard mounting plate 66 are driven by two crank slide mechanisms respectively, and the slide block parts of the two crank slide blocks are linked by two screw rods which rotate synchronously, so that the synchronism of rotation is ensured, the screw rods and the slide block parts are matched by threads, the transmission effect is ensured, and the progress of angle adjustment is ensured.
Further, the fixing device 3 simultaneously clamps the cylinder wall at the eyepiece interface 11 of the endoscope and the outer wall at the light guide beam interface 12 of the endoscope, thereby realizing the fixation of the endoscope.
Referring to fig. 1 to 9, the initialization adjusting device for detecting the optical performance of the medical endoscope specifically adopted by the method for detecting the optical performance of the medical endoscope of the embodiment comprises a medical hard tube endoscope 1; the signal interface of the imaging system is connected with the eyepiece interface 11 of the endoscope; a cold light source, the light source interface of which is connected with the light guide beam interface 12 of the endoscope; the connecting device comprises a base 21, a sliding seat 22, a fixing device 3 for fixing an endoscope and an angle adjusting device, wherein the angle adjusting device comprises a first angle adjusting device 5 for adjusting the angle of the endoscope, a second angle adjusting device 6 for adjusting the angle of a measuring plate, a linkage mechanism 7 for realizing synchronous linkage of the first angle adjusting device and the second angle adjusting device and a rotating angle fine adjusting structure 8 for fine adjusting the linkage mechanism 7, and the connecting device comprises the following components: the sliding seat 22 is slidably mounted on the base 21 in a straight line, the first angle adjusting device 5 comprises a first driving screw 51, a first driving nut, a first connecting seat 52, a first supporting rod 53 and a first rotating plate 54, the first driving screw 51 is rotatably mounted on the sliding seat 22, the first driving screw 51 and the first driving nut are matched through threads, the first driving nut is fixed on the first connecting seat 52, the first connecting seat 52 is slidably mounted on the sliding seat 22 in a straight line, one end of the first connecting seat 52 is hinged with one end of the first supporting rod 53, the other end of the first supporting rod 53 is hinged with the first rotating plate 54, the first rotating plate 54 is hinged with the sliding seat 22, the endoscope is fixed on the first rotating plate 54 through the fixing device 3, the first driving nut and the first connecting seat 52 are driven to linearly move through rotating the first driving screw 51, thereby driving the first supporting rod 53 to prop up the first rotating plate 54, so that the first rotating plate 54 rotates, and thereby adjusting the angle of the endoscope, the second angle adjusting device 6 comprises a second driving screw 61, a second driving nut, a second connecting seat 62, a second supporting rod 63 and a second rotating plate 64, the second driving screw 61 is rotatably mounted on the base 21, the second driving screw 61 and the second driving nut are in threaded fit, the second driving nut is fixed on the second connecting seat 62, the second connecting seat 62 is linearly and slidably mounted on the base 21, one end of the second connecting seat 62 is hinged with one end of the second supporting rod 63, the other end of the second supporting rod 63 is hinged with the second rotating plate 64, the second rotating plate 64 is hinged with the base 21, the measuring standard plate is mounted on the second rotating plate 64, the first rotating plate 54 is in a horizontal state in an initial state, the second rotating plate 64 is in a vertical state, through rotating second drive screw 61 and rotating, drive second drive nut, second connecting seat 62 rectilinear movement to drive second bracing piece 63 and prop up second pivoted plate 64, make second pivoted plate 64 rotate, thereby adjust survey mark board angle, first drive screw 51 fixed coarse adjustment rotary disk 56, first drive screw 51 links the setting through link gear 7 second drive screw 61, first drive screw 51 is the level setting, second drive screw 61 is vertical setting, first angle adjusting device 5 and second angle adjusting device 6 rotate in-process, satisfy following formula: α m＝αn, and α m/βm＝αn/βn, wherein: α m is the rotation angle of the first drive screw 51, β m is the rotation angle of the first rotation plate 54, α n is the rotation angle of the second drive screw 61, and β n is the rotation angle of the second rotation plate 64. A dial 691 for indicating a rotation angle is fixed to the first rotation plate 54, and a scale indication mark 692 for indicating a specific scale is fixed to the base 21.
The first drive screw 51 and the second drive screw 61, the first drive nut and the second drive screw 61, the first support rod 53 and the second support rod 63 all adopt the same structure or model during the selection, because the first angle adjusting device 5 and the second angle adjusting device 6 can be understood as slider-crank mechanisms, if the size parameters, the position parameters and other parameters of the two slider-crank mechanisms are set to be the same, and because the first drive screw 51 and the second drive screw 61 rotate at the same angle, the rotation angle of the first rotating plate 54 and the rotation angle of the second rotating plate 64 can be ensured to be the same, thereby ensuring the linear adjustment of the angle.
The linkage mechanism 7 comprises a spline shaft 71 and a spline shaft sleeve 72, the spline shaft 71 and the spline shaft sleeve 72 are sleeved, a first transmission screw 51 is fixed at one end of the spline shaft 71, a first bevel gear 73 and a second bevel gear 74 are fixed on the spline shaft sleeve 72, a third bevel gear 75 is fixed at the lower end of the second transmission screw 61, the third bevel gear 75 is meshed with the first bevel gear 73, the angle fine adjustment structure 8 comprises an adjusting rod, a fine adjustment rotating disc 82 and a fourth bevel gear 83, the base 21 is rotatably provided with the adjusting rod, the fine adjustment rotating disc 82 is fixed at one end of the adjusting rod, the fourth bevel gear 83 is connected at the other end of the adjusting rod, and the fourth bevel gear 83 is meshed with the second bevel gear 74. The linkage mechanism 7 has a simple structure, and does not affect the sliding connection of the sliding seat 22 and the base 21, and can ensure that the first transmission screw 51 and the second transmission screw 61 rotate at the same angle, and the fine adjustment rotary disc 82 is arranged, the fourth bevel gear 83 is driven to rotate through the rotation of the fine adjustment rotary disc 82, and then the second bevel gear 74 is driven to rotate, so that the first transmission screw 51 and the second transmission screw 61 are driven to rotate, the rotation angle of the first rotation plate 54 and the rotation angle of the second rotation plate 64 are regulated, and because the fourth bevel gear 83 and the second bevel gear 74 are meshed, the large-angle rotation of the fine adjustment rotary disc 82 and the small-angle rotation of the first transmission screw 51 and the second transmission screw 61 can be realized through the transmission ratio between the gears, and synchronous fine adjustment of the rotation angle of the first rotation plate 54 and the rotation angle of the second rotation plate 64 is realized. A plurality of gears may be provided between the fourth bevel gear 83 and the second bevel gear 74, and the fourth bevel gear 83 is finally connected to the second bevel gear 74 via respective gear meshes in sequence, thereby realizing a larger gear ratio, so that the progress of fine adjustment can be further improved. The fixing device 3 comprises a mounting seat 31, a Y-shaped seat 32, a left sliding block 33, a right sliding block 34 and a clamping adjusting screw 35, wherein the Y-shaped seat 32 is fixed on the mounting seat 31, the mounting seat 31 is arranged on a first rotating plate 54, the left sliding block 33 and the right sliding block 34 are respectively positioned on two sides of the mounting seat 31, the clamping adjusting screw 35 is rotatably arranged on the mounting seat 31, a left nut and a right nut are respectively fixed on the left sliding block 33 and the right sliding block 34, left and right sections of the clamping adjusting screw 35 are respectively provided with left and right threads, the left and right nuts are respectively screwed on the left and right sections of the clamping adjusting screw 35, so that the left and right sliding blocks 33 and 34 move oppositely or slide reversely by rotating the clamping adjusting screw 35, the left inclined pressing plate 361 is fixed on the left sliding block 33 and horizontally slides, the left inclined pressing plate 361 is arranged on the left sliding block 33, the left pressure spring used for pressing the left inclined pressing plate 361 to the right inclined pressing plate 371 is arranged on the left sliding block 33, the right clamping block 341 is fixed on the right sliding block 34 and horizontally slides and is provided with the right inclined pressing plate 371, the right pressure spring used for pressing the right inclined pressing plate 371 to the left inclined pressing plate 361 is arranged on the right sliding block 34, the left inclined pressing plate 361 and the right inclined pressing plate 371 are oppositely arranged in a splayed shape, the left inclined pressing plate 361 and the right inclined pressing plate 371 are located above the Y-shaped seat 32, the left clamping block 331 and the right clamping block 341 are all provided with right V-shaped grooves, the notch of the V-shaped groove of the Y-shaped seat 32 is upward, the notch of the V-shaped groove of the left clamping block 331 is rightward arranged, and the notch of the V-shaped groove of the right clamping block 341 is leftward. The process of clamping the endoscope by the fixing device 3 is as follows, the cylinder wall at the eyepiece interface 11 of the endoscope is placed on the V-shaped groove of the Y-shaped seat 32, the left sliding block 33 and the right sliding block 34 move in opposite directions by rotating the clamping adjusting screw 35, the left inclined pressing plate 361 and the right inclined pressing plate 371 are pressed on the cylinder wall at the eyepiece interface 11 of the endoscope, and the V-shaped groove of the left clamping block 331 and the V-shaped groove of the right clamping block 341 are respectively clamped on the outer wall at the light guide beam interface 12 of the endoscope, so that the quick fixation of the endoscope is realized. The fixing device 3 is simple in structure and convenient to operate, the operation of clamping the endoscope can be realized only by rotating the clamping adjusting screw 35, the efficiency of detaching the endoscope is improved in the same way, and the positioning progress is higher.
The first rotating plate 54 is fixedly provided with a linear guide block 38, the linear guide block 38 is provided with a sliding groove, the mounting seat 31 is in a strip shape, the mounting seat 31 is slidably mounted on the linear guide block 38, the mounting seat 31 is screwed with a locking screw 39, and a screw rod of the locking screw 39 is inserted into the sliding groove and is pressed on the mounting seat 31, so that the mounting seat 31 is limited to slide relative to the linear guide block 38. After the first rotating plate 54 and the second rotating plate 64 rotate, the position of the optical axis of the objective lens at the front end of the endoscope relative to the measuring plate changes, and the locking screw 39 is loosened, so that the optical axis of the objective lens at the front end of the endoscope is aligned with the position of the measuring plate by manually controlling the sliding mounting seat 31 to move a small distance.
Left connecting plate 362 is fixed to left inclined clamp plate 361 an organic whole, left connecting plate 362 is fixed with two left slide bar 363, left slide bar 363 slidable mounting is on left sliding block 33, right inclined clamp plate 371 an organic whole is fixed right connecting plate 372, right connecting plate 372 is fixed with two right slide bar 373, right slide bar 373 slidable mounting is on right sliding block 34.
The second rotating plate 64 is connected with the gauge mounting plate 66 for fixing the gauge through two connecting rods 65, one ends of the two connecting rods 65 are respectively fixed at the left upper end and the right upper end of the second rotating plate 64, two ball seats 681 are fixed on the gauge mounting plate 66, ball grooves 682 are formed in the ball seats 681, the two connecting rods 65 penetrate through mounting holes of the gauge mounting plate 66, balls 683 are fixed at the other ends of the two connecting rods 65, the balls 683 are located in the ball grooves 682, connecting rod pressure springs 684 are sleeved on the connecting rods 65, two ends of the connecting rod pressure springs 684 respectively support against the gauge mounting plate 66 and the second rotating plate 64, fine adjustment cams 685 are rotatably mounted on the second rotating plate 64, and can be limited in a mode of increasing locking and clamping relative to the second rotating plate 64, so that free rotation of the fine adjustment cams 685 in a state is avoided, and the locking structure in the mechanical field is relatively common in a structure limiting structure rotation mode, and various forms are avoided. A cam handle 686 is fixed to the fine adjustment cam 685. With this structure, by rotating the cam handle 686, the fine adjustment cam 685 can toggle the second rotating plate 64, so as to fine-adjust the angle of the second rotating plate 64, and the main purpose is to fine-adjust the first rotating plate 54 and the gauge mounting plate 66 in the initial state when they are not vertical, so that they are relatively vertical, thereby facilitating the accuracy of the subsequent operation. And the two connecting rods 65 all pass through the mounting holes of the measuring standard mounting plate 66, and the other ends of the two connecting rods 65 are fixed with the ball head 683, and the ball head 683 is positioned in the ball head groove 682, i.e. the mounting of the second rotating plate 64 is realized, and the fine adjustment of the angle of the second rotating plate 64 is not influenced.
The gauge mounting plate 66 is provided with a socket 67 for inserting the gauge plate.
The baffle plate 23 is fixed on the base 21 and the sliding seat 22, the guide sleeve 241 is fixed on the base 21, the sliding shaft 242 is fixed on the sliding seat 22, the sliding shaft 242 is inserted into and slidably mounted in the guide sleeve 241, and the sliding wheel 243 is rotatably mounted at the lower end of the sliding seat 22, so that the sliding seat 22 can be conveniently pulled out linearly.
The manual fine setting slip table 4 of biax is installed on the base 21, is fixed with vertical board 41 on the manual fine setting slip table 4 of biax, through adjusting manual fine setting slip table 4 of biax, can realize that vertical board carries out the distance fine setting relative base 21 left and right directions or upper and lower direction, and second drive screw 61 rotates to install on vertical board, and the straight line slidable mounting of second connecting seat 62 is on vertical board, articulates in the upper end of vertical board on the upper end of second pivoted board 64.
Further, as shown in fig. 10, in the operation process of the method for detecting optical performance of a medical endoscope in this embodiment, during the counterclockwise rotation of the fixing device 3, the fixing device and the fixing device move linearly at the same time, and the fixing device are linked by a distance compensation mechanism. Thereby reducing the distance that the fixing means 3 subsequently need to be adjusted and improving the efficiency of the operation.
The corresponding structure can also be improved as follows: the first rotating plate 54 is provided with a linear guide block 38 in a sliding manner, the linear guide block 38 is provided with a sliding groove, the mounting seat 31 is in a strip shape, the mounting seat 31 is arranged on the linear guide block 38 in a sliding manner, the mounting seat 31 is screwed with a locking screw 39, a screw rod of the locking screw 39 is inserted into the sliding groove and is pressed on the mounting seat 31, so that the mounting seat 31 is limited to slide relative to the linear guide block 38, the linear guide block further comprises a distance compensation mechanism, the distance compensation mechanism comprises a first gear 551, a second gear 552, a third gear 553, a fourth gear 554 and a rack 555, the other end of the first support rod 53 is fixed with the first gear 551, the second gear 552, the third gear 553 and the fourth gear 554 are rotated on the first rotating plate 54, the first gear 551 is meshed with the second gear 552, the second gear 552 is meshed with the third gear 553, the lower end of the linear guide block 38 is fixed with the rack 555, and the rack 555 is meshed with the fourth gear 554. With this structure, when the first support rod 53 rotates, the rack 555 is driven to move by the engagement of the gears, so that the linear guide block 38 and the mounting seat 31 are driven to move linearly, and distance compensation is realized, so that the optical axis of the objective lens at the front end part of the endoscope can be near a reasonable position.
The foregoing description of the invention is merely exemplary of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. An initializing and adjusting device for detecting optical performance of a medical endoscope is characterized in that: including adjusting endoscope angle's first angle adjusting device (5), adjusting survey second angle adjusting device (6) of target angle, realize first, second angle adjusting device synchronous interlock's link gear (7) and fine setting link gear (7) pivoted angle fine setting structure (8), wherein: the sliding seat (22) is linearly and slidably mounted on the base (21), the first angle adjusting device (5) comprises a first transmission screw (51), a first transmission nut, a first connecting seat (52), a first supporting rod (53) and a first rotating plate (54), the first transmission screw (51) is rotatably mounted on the sliding seat (22), the first transmission screw (51) and the first transmission nut are in threaded fit, the first transmission nut is fixed on the first connecting seat (52), the first connecting seat (52) is linearly and slidably mounted on the sliding seat (22), one end of the first connecting seat (52) is hinged to one end of a first supporting rod (53), the other end of the first supporting rod (53) is hinged to a first rotating plate (54), the first rotating plate (54) is hinged to the sliding seat (22), the endoscope is fixed on the first rotating plate (54) through the fixing device (3), the first transmission screw (51) is rotated to drive the first transmission nut and the first connecting seat (52) to linearly move, so that the first supporting rod (53) is driven to prop up the first rotating plate (54), the first rotating plate (62) is driven to rotate, and the first angle adjusting device (61) comprises the second rotating screw (61) and the second angle adjusting device The second support rod (63) and the second rotating plate (64), the second transmission screw (61) is rotatably arranged on the base (21), the second transmission screw (61) and the second transmission nut are in threaded fit, the second transmission nut is fixed on the second connecting seat (62), the second connecting seat (62) is linearly and slidably arranged on the base (21), one end of the second connecting seat (62) is hinged with one end of the second support rod (63), the other end of the second support rod (63) is hinged with the second rotating plate (64), the second rotating plate (64) is hinged with the base (21), the measuring plate is arranged on the second rotating plate (64), in an initial state, the first rotating plate (54) is in a horizontal state, the second rotating plate (64) is in a vertical state, the second transmission screw (61) is rotated through rotating, the second transmission screw (61) is driven to linearly move, the second support rod (63) is driven to prop up the second rotating plate (64), the second rotating plate (64) is driven to rotate, the first rotating plate (51) is driven to be adjusted, the first rotating plate (51) is driven to be in a vertical state, the first screw (51) is driven to be arranged, in the rotation process of the first angle adjusting device (5) and the second angle adjusting device (6), the following formula is satisfied: α m＝αn, and α m/βm＝αn/βn, wherein: alpha m is the rotation angle of the first drive screw (51), beta m is the rotation angle of the first rotation plate (54), alpha n is the rotation angle of the second drive screw (61), beta n is the rotation angle of the second rotation plate (64),
The linkage mechanism (7) comprises a spline shaft (71) and a spline shaft sleeve (72), the spline shaft (71) and the spline shaft sleeve (72) are sleeved, a first transmission screw (51) is fixed at one end of the spline shaft (71), a first bevel gear (73) and a second bevel gear (74) are fixed on the spline shaft sleeve (72), a third bevel gear (75) is fixed at the lower end of the second transmission screw (61), the third bevel gear (75) is meshed with the first bevel gear (73), the angle fine adjustment structure (8) comprises an adjusting rod, a fine adjustment rotating disc (82) and a fourth bevel gear (83), an adjusting rod is rotatably arranged on a base (21), one end of the adjusting rod is fixedly provided with the fine adjustment rotating disc (82), the other end of the adjusting rod is connected with the fourth bevel gear (83), the fourth bevel gear (83) is meshed with the second bevel gear (74),
The second rotating plate (64) is connected with a measuring standard mounting plate (66) used for fixing the measuring standard plate through two connecting rods (65), one ends of the two connecting rods (65) are respectively fixed at the left upper end and the right upper end of the second rotating plate (64), two ball seats (681) are fixed on the measuring standard mounting plate (66), ball grooves (682) are formed in the ball seats (681), the two connecting rods (65) all penetrate through mounting holes of the measuring standard mounting plate (66), balls (683) are fixed at the other ends of the two connecting rods (65), the balls (683) are located in the ball grooves (682), connecting rod pressure springs (684) are sleeved on the connecting rods (65), two ends of each connecting rod pressure spring (684) respectively support against the measuring standard mounting plate (66) and the second rotating plate (64), fine-tuning cams (685) are rotatably mounted on the second rotating plate (64), and cam handles (686) are fixed on the fine-tuning cams (685).
2. The initialization adjustment device according to claim 1, wherein: the measuring mark mounting plate (66) is provided with a plugging groove (67) for inserting the measuring mark plate.
3. The initialization adjustment device according to claim 1, wherein: the linear guide block (38) is slidably mounted on the first rotating plate (54), the linear guide block (38) is provided with a sliding groove, the fixing device is slidably mounted on the linear guide block (38), the linear guide block further comprises a distance compensation mechanism, the distance compensation mechanism comprises a first gear (551), a second gear (552), a third gear (553), a fourth gear (554) and a rack (555), the first gear (551) is fixed to the other end of the first supporting rod (53), the second gear (552), the third gear (553) and the fourth gear (554) are rotatably mounted on the first rotating plate (54), the third gear (553) and the fourth gear (554) are coaxially fixed, the first gear (551) is meshed with the second gear (552), the second gear (552) is meshed with the third gear (553), and the rack (555) is fixed to the lower end of the linear guide block (38), and the rack (555) is meshed with the fourth gear (554).
4. The initialization adjustment device according to claim 1, wherein: install manual fine setting slip table of biax (4) on base (21), be fixed with vertical board on manual fine setting slip table of biax (4), through adjusting manual fine setting slip table of biax (4), can realize that vertical board carries out the distance fine setting relative base (21) left and right directions or upper and lower direction, second drive screw (61) rotate and install on vertical board, second connecting seat (62) straight line slidable mounting is on vertical board, articulates in the upper end of vertical board on the upper end of second pivoted board (64).
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| CN111693256B (en) * | 2020-06-23 | 2022-08-30 | 湖南博明英光学科技有限公司 | Optical lens detection device based on mechanical transmission |
| CN113984351A (en) * | 2021-11-23 | 2022-01-28 | 中国航空工业集团公司洛阳电光设备研究所 | Target correcting device with three-dimensional adjusting mechanism |
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