Lifting type optical fiber light transmission detector

Abstract

The invention relates to the technical field of optical fiber light transmission detection, in particular to a lifting type optical fiber light transmission detector which comprises a table body, a mounting cylinder is fixedly mounted on the upper surface of the table body, a penetrating opening is formed in the surface of the mounting cylinder, a sliding opening is formed in the opening wall of the penetrating opening, and a shielding plate is slidably mounted in the sliding opening. The surfaces of the shielding plate and the mounting cylinder are coated with shading paint; a mounting groove is formed in the surface of the table body, a rotating rod is vertically and rotatably mounted at the bottom of the mounting groove, a connecting rod is fixedly mounted on the surface of the rotating rod, a sliding opening is formed in the top wall of the mounting groove, the top end of the connecting rod is fixedly connected with the bottom of a shielding plate, and the rotating rod is controlled to rotate through a threaded assembly. The installation cylinder and the shielding plate are coated with shading paint, the shielding plate can be controlled to be opened and closed through the rotating rod, the connecting rod and the like, the shielding plate is matched with the installation cylinder so that external light can be blocked, a stable dark environment can be created, the detection accuracy can be improved, under the action of the threaded assembly, a detected object can be conveniently taken or a to-be-detected object can be conveniently placed, and manual operation is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical fiber light transmission detection technology, and more particularly to a lifting type optical fiber light transmission detector. BACKGROUND

[0002] The core of optical transmission technology is to realize data transmission between the information sending end and the receiving end by taking optical signal as the carrier. By means of laser reflection and receiving mechanism, the propagation trajectory of laser can be accurately measured, and the spatial distance and path information between the measured object and the laser emitting source can be calculated.

[0003] The Chinese patent with publication number CN112462377A discloses a ring array lifting type optical fiber light transmission detector, which can be applied to irregular object shape detection, effectively improving accuracy and applicability.

[0004] The above patent document does not have a design to prevent external light from entering, and the actual detection environment cannot effectively isolate external light, so natural light and artificial light sources can enter the detection area in different ways. When external light interacts with the detection light signal transmitted in the optical fiber, the intensity of the light signal will fluctuate, so that the light intensity received by the detection equipment is not simply determined by the transmission characteristics of the optical fiber, resulting in intensity detection error. SUMMARY

[0005] The purpose of the present application is to solve the following shortcomings in the prior art. The existing optical fiber light transmission detector does not have a design to prevent external light from entering, and natural light and artificial light sources can enter the detection area in different ways, resulting in intensity detection error. A lifting type optical fiber light transmission detector is proposed.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: A lifting type optical fiber light transmission detector, comprising a table body, a mounting cylinder with a closed top end is fixedly installed on the upper surface of the table body, a through hole is formed in the surface of the mounting cylinder, an arc-shaped sliding hole is formed in the hole wall of the through hole, an arc-shaped shutter is slidingly installed in the sliding hole, the shutter and the surface of the mounting cylinder are coated with light shielding paint, a lifting cylinder is fixedly installed on the upper surface of the table body, a mounting plate is fixedly installed on the driving shaft of the lifting cylinder, an installation rod is fixedly installed on the mounting plate, a U-shaped plate is fixedly installed at the bottom end of the installation rod and penetrates into the mounting cylinder, a detection ring is arranged in the mounting cylinder, an annular cavity is formed in the detection ring, a data converter is arranged in the annular cavity, a plurality of optical fiber laser heads are fixedly installed on the inner wall of the detection ring in a circumferential manner, and the plurality of optical fiber laser heads are electrically connected with the data converter; the upper surface of the table body is provided with a three-jaw chuck for fixing an object. An installation groove is provided on the surface of the platform, a rotating rod is vertically installed at the bottom of the installation groove, an L-shaped connecting rod is fixedly installed on the surface of the rotating rod, an arc-shaped sliding opening is provided on the top wall of the installation groove, the top end of the connecting rod passes through the sliding opening and is fixedly connected to the bottom of the shield, and the rotation of the rotating rod is controlled by a threaded assembly.

[0007] As a preferred solution, the threaded assembly includes a first spring rod, a threaded rod and a lifting component. The groove wall of the mounting groove is vertically provided with a rectangular groove. The bottom end of the first spring rod is fixedly connected to the bottom of the rectangular groove. The top of the first spring rod is fixedly connected to the threaded rod through a connecting plate. The top of the rotating rod is vertically provided with a threaded groove. The bottom thread of the threaded rod is installed in the threaded groove. The pulling component is used to give the threaded rod an upward pulling force.

[0008] The two ends of the U-shaped block are symmetrically fixed on the inner wall of the U-shaped block, two rectangular plates are respectively fixed on the ends of the two second spring rods and two lifting plates. The groove wall of the mounting groove is symmetrically and vertically provided with vertical openings, and the two ends of the U-shaped block pass through the two vertical openings respectively. The bottom of the rectangular plate is provided with a mounting opening, and a first rotating shaft is horizontally rotatably installed in the mounting opening, and the two lifting plates are respectively fixedly sleeved on the two first rotating shafts, one end of the first rotating shaft passes through the rectangular plate and is fixedly installed with the mounting block, a first torsion spring is sleeved on the first rotating shaft, and the two ends of the first torsion spring are respectively fixedly connected to the mounting block and the rectangular plate, and the lifting plate is restricted from rotating downward by the first limiting component, and a force-bearing plate is symmetrically fixedly installed on the surface of the top end of the threaded rod, and the two force-bearing plates are respectively located on the moving paths of the two lifting plates, and a pressing component is provided in the mounting groove, and the pressing component is used to control the two second spring rods to retract together.

[0009] As a preferred solution, the first limiting component includes a limiting rod fixedly installed on the surface of the lifting plate, the wall of the installation opening is provided with an arc-shaped opening with the first rotating axis as the center, and one end of the limiting rod is slidably installed in the arc-shaped opening.

[0010] As a preferred solution, the pressing component includes two inclined plates symmetrically fixedly installed on the walls of the mounting groove and two baffles, a pressing rod is fixedly installed on the movable end surface of the second spring rod, a through opening is vertically opened on the surface of the inclined plate, a second rotating shaft is horizontally installed in the through opening, the two baffles are respectively fixedly installed on the ends of the two second rotating shafts, a second torsion spring is sleeved on the second rotating shaft, the two ends of the second torsion spring are respectively fixedly connected to the wall of the through opening and the surface of the baffle, the two pressing rods correspond to the positions of the two through openings respectively, and a second limiting component for limiting the downward rotation of the baffle is provided in the through opening.

[0011] As a preferred solution, the second limiting component includes a limiting block fixedly mounted on the wall of the through-hole, and the lower surface of the baffle abuts against the upper surface of the limiting block.

[0012] As a preferred solution, a sliding groove is vertically opened on the inner wall of the baffle, a rotating ring is provided in the detection ring, and sliding blocks are symmetrically fixedly installed on the outer wall of the rotating ring. An annular groove is opened on the inner wall of the detection ring, and the two sliding blocks are slidably installed in the annular groove. An L-shaped sliding rod is fixedly installed on the upper surface of the rotating ring, and the end of the sliding rod away from the rotating ring is slidably installed in the sliding groove. The ring wall of the rotating ring is circumferentially opened with multiple light-transmitting ports for the lasers of multiple fiber optic laser heads to pass through. The outer wall of the rotating ring is circumferentially fixed with multiple cleaning sponges, and the multiple cleaning sponges are respectively located between multiple adjacent light-transmitting ports.

[0013] As a preferred solution, the surface of the rotating rod is circularly fixed with multiple mounting shells, an insertion block is vertically slidably inserted in the mounting shell, an energized spring is vertically provided on the top wall of the mounting shell, the bottom end of the energized spring is fixedly connected to the top end of the insertion block, the bottom of the mounting groove is circularly provided with multiple slots, the bottom ends of the multiple insertion blocks are respectively slidably inserted in the multiple slots, a photosensitive component is provided in the light-transmitting port, and multiple groups of the photosensitive components are respectively used to control the extension and contraction of multiple energized springs.

[0014] As a preferred solution, the photosensitive component includes a photosensor fixedly installed in the light-transmitting port, a cavity is opened in the shield, a battery module is provided in the cavity, the battery module includes a power supply unit for providing electrical energy and a control unit including multiple independent control circuits, each of the photosensors is connected in series with the signal input end of the corresponding control circuit through a first wire, and the signal output end of each control circuit is connected in series with the corresponding energized spring through a second wire, and the power supply ends of multiple control circuits are connected in parallel to the power supply unit.

[0015] As a preferred solution, the bottom end of the sliding rod is provided with a first wire taking-up opening that passes through the top end, the bottom end of the connecting rod is provided with a second wire taking-up opening that is connected to the cavity, the groove wall of the sliding groove is provided with a movable opening that is connected to the cavity, multiple first wires are integrated in the first wire taking-up opening, and the ends of multiple first wires away from the photosensor pass through the movable opening, multiple second wires are integrated in the second wire taking-up opening, and the ends of multiple second wires away from the energized spring pass into the cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Both the mounting tube and the shield are coated with light-shielding paint, and the shield can be opened and closed by means of rotating rods, connecting rods and other structures, which can effectively block external light interference, creating a stable dark environment for the detection of fiber laser heads, avoiding the influence of stray light on laser transmission detection data, making the signal received by the data converter more accurate, and significantly improving the accuracy of optical transmission detection; The threaded assembly cooperates with the threads of the threaded rod and the rotating rod, combined with the first spring rod and the pulling component, to conveniently control the rotation of the rotating rod, thereby adjusting the opening and closing state of the shutter. The cooperation between the pressing component and the pulling component can automatically control the movement of the shutter during the lifting and lowering process of the mounting plate, reducing manual operation steps. The cleaning sponge on the rotating ring rotates with the shield to wipe the end of the fiber laser head, preventing dust and other impurities from sticking and affecting the transmission and reception of the fiber laser head, reducing the frequency of manual cleaning and ensuring the continuous progress of the detection work; The photosensor on the bottom wall of the light-transmitting port identifies laser intensity and spot shape, and collects emission status in real time. The linkage mechanism formed by the photosensor, in conjunction with the energized spring, unlocks the shutter, allowing it to rotate normally, when all fiber laser heads have normal intensity. If the laser intensity is weak, the shutter remains locked and cannot rotate. This design promptly alerts personnel to device failures, effectively preventing the system from continuously using erroneous data calculations due to failure of one or more fiber laser heads, thereby preventing distortion of the final test results and significantly improving the reliability and accuracy of detection. Multiple photosensors correspond to multiple fiber optic laser heads and multiple plug-in positions for locking the rotating rod. When a fault occurs, the staff can quickly locate the faulty fiber optic laser head by observing the locking status of multiple plug-in blocks, facilitating timely replacement. This greatly shortens the troubleshooting time, improves maintenance efficiency, ensures that the detection work returns to normal as soon as possible, and further ensures the continuity of the detection process and the reliability of the results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front three-dimensional structure of a lifting fiber optic light transmission detector proposed by the present invention; Figure 2 This is a schematic diagram of the back three-dimensional structure of a lifting fiber optic light transmission detector proposed by the present invention; Figure 3 This is a partial three-dimensional structural diagram of the lifting cylinder, detection ring and U-shaped block in the present invention; Figure 4 This is a partial three-dimensional structural diagram of a lifting fiber optic light transmission detector proposed by the present invention; Figure 5 It is a partial three-dimensional structural diagram of the first spring rod and the threaded rod in the present invention; Figure 6It is a schematic diagram of a partial three-dimensional structure of the rectangular plate and the lifting plate in the present invention; Figure 7 It is a schematic diagram of the local three-dimensional structure of the inclined plate in the present invention; Figure 8 for Figure 4 A in the middle is an enlarged structural diagram; Figure 9 for Figure 6 The enlarged structural diagram at B in the middle; Figure 10 for Figure 7 The enlarged structural diagram at C in the middle; Figure 11 It is a schematic diagram of a partial three-dimensional structure of the detection ring and the rotating ring in the present invention; Figure 12 It is a schematic diagram of a partial three-dimensional structure of the rotating ring in the present invention; Figure 13 It is a schematic diagram of a partial three-dimensional structure of the shield and the rotating rod in the present invention; Figure 14 It is a partial three-dimensional structural diagram of the platform body and the mounting tube in the present invention; Figure 15 It is a schematic diagram of a partial three-dimensional structure of the mounting shell and the insert block in the present invention; Figure 16 for Figure 11 Enlarged structural diagram at point D in the middle.

[0018] In the figure: 1 platform, 2 mounting cylinder, 3 through-hole, 4 sliding hole, 5 shield, 6 lifting cylinder, 7 mounting plate, 8 mounting rod, 9 U-shaped plate, 10 detection ring, 11 fiber laser head, 12 rotating rod, 13 connecting rod, 14 sliding hole, 15 first spring rod, 16 threaded rod, 17 connecting plate, 18 threaded groove, 19 U-shaped block, 20 second spring rod, 21 rectangular plate, 22 lifting plate, 23 first rotating shaft, 24 first torsion spring, 25 force plate, 26 limiting rod, 27 arc-shaped opening, 28 inclined plate, 29 baffle, 30 push rod, 31 through opening, 32 second rotating shaft, 33 second torsion spring, 34 slide groove, 35 rotating ring, 36 slide rod, 37 light-transmitting opening, 38 cleaning sponge, 39 mounting shell, 40 insert block, 41 energized spring, 42 slot, 43 photosensor, 44 limiting block, 45 sliding block, 46 annular groove, 47 three-jaw chuck, 48 vertical plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-Figure 3, a lifting type optical fiber light transmission detector, including a platform 1, a mounting tube 2 with a closed top is fixedly installed on the upper surface of the platform 1, a through-hole 3 is opened on the surface of the mounting tube 2, a curved sliding hole 4 is opened on the wall of the through-hole 3, a curved shield 5 is slidably installed in the sliding hole 4, and the surface of the shield 5 and the mounting tube 2 are coated with light-shielding paint, a lifting cylinder 6 is fixedly installed on the upper surface of the platform 1, a mounting plate 7 is fixedly installed on the driving shaft of the lifting cylinder 6, a mounting rod 8 is fixedly installed on the mounting plate 7, the bottom end of the mounting rod 8 penetrates into the mounting tube 2 and is fixedly installed with a U-shaped plate 9, a detection ring 10 is provided in the mounting tube 2, an annular cavity is opened in the detection ring 10, a data converter is provided in the annular cavity, and the inner wall of the detection ring 10 is A plurality of fiber optic laser heads 11 are fixedly installed in a circular shape. The fiber optic laser heads 11 can emit detection laser and receive reflected laser. The plurality of fiber optic laser heads 11 are electrically connected to the data converter. A controller is fixedly installed on the side wall of the table 1 (the controller is disclosed in the publication number CN108817662B, and the patent name is a laser welding system. It belongs to the prior art and its working principle is not described in detail here). A three-jaw chuck 47 for fixing objects is provided on the upper surface of the table 1. The controller is electrically connected to the lifting cylinder 6, the three-jaw chuck 47, the plurality of fiber optic laser heads 11 and the data converter, and can display the detection data converted by the data converter on its own display screen.

[0021] Reference Figures 4-10, a mounting groove is provided on the surface of the platform 1, and a rotating rod 12 is vertically rotated and installed at the bottom of the mounting groove. An L-shaped connecting rod 13 is fixedly installed on the surface of the rotating rod 12, and an arc-shaped sliding port 14 is provided on the top wall of the mounting groove. The top of the connecting rod 13 passes through the sliding port 14 and is fixedly connected to the bottom of the shield 5. The rotating rod 12 is controlled to rotate by a threaded assembly. The threaded assembly includes a first spring rod 15, a threaded rod 16 and a pulling component. A rectangular groove is vertically provided on the groove wall of the mounting groove. The bottom end of the first spring rod 15 is fixedly connected to the bottom of the rectangular groove. The top of the first spring rod 15 is fixedly connected to the threaded rod 16 through a connecting plate 17. A threaded groove 18 is vertically provided on the top of the rotating rod 12, and the bottom of the threaded rod 16 is threadedly installed in the threaded groove 18. The pulling component is used to give the threaded rod 16 an upward pulling force. The pulling component includes a U-shaped block 19 fixedly connected to the mounting plate 7 through a vertical plate 48, two second spring rods 20 symmetrically fixedly mounted on the inner wall of the U-shaped block 19, two rectangular plates 21 respectively fixedly mounted on the ends of the two second spring rods 20, and two pulling plates 22. The groove wall of the mounting groove is symmetrically vertically provided with vertical openings. The two ends of the U-shaped block 19 pass through the two vertical openings respectively. A mounting opening is provided at the bottom of the rectangular plate 21. A first rotating shaft 23 is horizontally rotatably installed in the mounting opening. The two pulling plates 22 are respectively fixedly sleeved on the two first rotating shafts 23. One end of the first rotating shaft 23 passes through the rectangular plate 21 and is fixedly installed with a mounting block. The first rotating shaft 23 is sleeved with a first rotating shaft 23. A torsion spring 24, the two ends of the first torsion spring 24 are fixedly connected to the mounting block and the rectangular plate 21 respectively, and the lifting plate 22 is limited to rotate downward by the first limiting component. The first limiting component includes a limiting rod 26 fixedly mounted on the surface of the lifting plate 22, and the wall of the mounting opening is provided with an arc-shaped opening 27 with the first rotating shaft 23 as the center. One end of the limiting rod 26 is slidably mounted in the arc-shaped opening 27, and a force-bearing plate 25 is symmetrically fixedly mounted on the surface of the top of the threaded rod 16. The two force-bearing plates 25 are respectively located on the moving paths of the two lifting plates 22. A pressing component is provided in the mounting groove, and the pressing component is used to control the two second spring rods 20 to retract together. The pressing component includes two inclined plates 28 and two symmetrically fixedly mounted on the wall of the mounting groove. A baffle 29 is provided, and a push rod 30 is fixedly installed on the surface of the moving end of the second spring rod 20. A through hole 31 is vertically opened on the surface of the inclined plate 28, and a second rotating shaft 32 is horizontally rotatably installed in the through hole 31. The two baffles 29 are respectively fixedly installed on the ends of the two second rotating shafts 32, and a second torsion spring 33 is sleeved on the second rotating shaft 32. The two ends of the second torsion spring 33 are respectively fixedly connected to the mouth wall of the through hole 31 and the surface of the baffle 29, and the two push rods 30 correspond to the positions of the two through holes 31 respectively. A second limiting component for limiting the baffle 29 from rotating downward is provided in the through hole 31, and the second limiting component includes a limiting block 44 fixedly installed on the mouth wall of the through hole 31, and the lower surface of the baffle 29 is against the upper surface of the limiting block 44. refer to Figure 1 and Figure 4Before the detection work begins, the detection ring 10 and multiple fiber laser heads 11 will be at the highest point, and the shield 5 will not block the through-hole 3 at this time, and the through-hole 3 will be in an open state, and at this time the upper surfaces of the two lifting plates 22 will respectively resist the lower surfaces of the two force-bearing plates 25, so that the threaded rod 16 is at the highest point, and the first spring rod 15 is in a stretched state. Then, the three-jaw chuck 47 on the upper surface of the platform 1 is used to fix the object to be detected, and then the lifting cylinder 6 and multiple fiber laser heads 11 are started, and the driving shaft of the lifting cylinder 6 drives The mounting plate 7 descends, and the mounting plate 7 drives the U-shaped plate 9 and the detection ring 10 to descend together through the mounting rod 8. In the process of moving downward, the U-shaped block 19 will also move downward with the two second spring rods 20, the two rectangular plates 21 and the two lifting plates 22. The pushing force exerted by the two lifting plates 22 on the two force-bearing plates 25 gradually weakens, and the threaded rod 16 will gradually move downward under the elastic potential energy of the first spring rod 15. Since the threaded rod 16 cannot rotate, the rotating rod 12 will move downward under the cooperation between the thread on the surface of the threaded rod 16 and the thread groove 18. As the shield 5 rotates, and as the two second spring rods 20 move downward, the lower surfaces of the two push rods 30 will respectively slide in contact with the upper surfaces of the two baffles 29 located in the through openings 31. Since the baffles 29 are restricted by the limiting blocks 44 and cannot rotate downward, the push rods 30 will slide along the inclined surface of the baffle 29 until they slide with the inclined surface of the inclined plate 28. Under the action of the inclined surface, the two second spring rods 20 will shrink together, and the distance between the two lifting plates 22 will also be shortened, and the contact area between the lifting plate 22 and the force-bearing plate 25 will gradually decrease. , until the lifting plate 22 is no longer in contact with the force-bearing plate 25, the threaded rod 16 will quickly move down and recover under the elastic potential energy of the first spring rod 15, so that the rotating rod 12 will quickly rotate with the baffle 5, so that both ends of the baffle 5 are located in the sliding opening 4, and the through opening 3 is completely blocked. The installation tube 2 and the baffle 5 work together to create a dark environment. Since both surfaces are coated with light-shielding paint, they can effectively block external light interference, provide a stable dark environment for the subsequent detection work of the fiber optic laser head 11, and avoid stray light affecting the accuracy of laser transmission detection data.

[0022] Then, as the detection ring 10 continues to move downward, the two push rods 30 will separate from the two inclined plates 28, the pressing force exerted by the inclined plates 28 on the push rods 30 will disappear, and the two second spring rods 20 will quickly stretch and recover. When the detection ring 10 reaches a suitable detection height, the detection lasers emitted by multiple fiber optic laser heads 11 will irradiate the surface of the object, and the lasers will be reflected on the surface of the object. The reflected lasers are received by the fiber optic laser heads 11, and the fiber optic laser heads 11 transmit the received reflected laser signals to the data converter. The data converter processes the signals to obtain the size data of the object surface, and then calculates the shape of the object. In this process, the detection ring 10 will gradually move downward with multiple fiber optic laser heads 11, thereby completely detecting the surface of the object. The converted data is further transmitted to the controller, and the controller displays the detection data on its own display screen. When the detection ring 10 moves downward, the lower surfaces of the two lifting plates 22 will respectively abut against the upper surfaces of the two force-bearing plates 25. Under the obstruction of the force-bearing plates 25, the end of the lifting plate 22 away from the first rotating shaft 23 will rotate upward, and the end of the limiting rod 26 will also slide in the arc-shaped opening 27. When the lifting plate 22 moves downward and no longer contacts the force-bearing plate 25, the lifting plate 22 will quickly rotate and return to a horizontal state under the elastic potential energy of the first torsion spring 24.

[0023] When the inspection work is completed, the controller controls the lifting cylinder 6 to drive the mounting plate 7 to rise, and the U-shaped block 19, the second spring rod 20, the rectangular plate 21 and the lifting plate 22 move up accordingly. In the process of moving up, the upper surfaces of the two lifting plates 22 will respectively resist the lower surfaces of the two force-bearing plates 25. Due to the cooperation of the limiting rod 26 and the arc-shaped opening 27, the end of the lifting plate 22 away from the first rotating shaft 23 cannot rotate upward, thereby giving the threaded rod 16 an upward pulling force, the first spring rod 15 will gradually stretch, and the rotating rod 12 At this time, the baffle 5 will gradually rotate, causing the opening 3 to gradually open. At the same time, as the second spring rod 20 moves upward, the two push rods 30 will respectively enter the two through openings 31, and the upper surface of the push rod 30 will resist the lower surface of the baffle 29 located in the through opening 31. The baffle 29 is pushed upward by the push rod 30, and its end away from the second rotating shaft 32 will rotate upward until the push rod 30 moves out of the through opening 31 and no longer contacts the baffle 29. At this time, the baffle 29 will quickly rotate and reset under the elastic potential energy of the second torsion spring 33.

[0024] When the detection ring 10 moves up to the highest point, the hole 3 will be in a fully open state, so that it is easy to take out the objects that have been tested and fix the subsequent objects to be tested through the three-jaw chuck 47.

[0025] Reference Figure 11-13 , the inner wall of the shield 5 is vertically provided with a slide groove 34, and the detection ring 10 is provided with a rotating ring 35, as shown Figure 16As shown, sliding blocks 45 are symmetrically fixedly installed on the outer wall of the rotating ring 35, and an annular groove 46 is provided on the inner wall of the detection ring 10. The two sliding blocks 45 are slidably installed in the annular groove 46. An L-shaped sliding rod 36 is fixedly installed on the upper surface of the rotating ring 35, and the end of the sliding rod 36 away from the rotating ring 35 is slidably installed in the sliding groove 34. The ring wall of the rotating ring 35 is circularly provided with multiple light-transmitting ports 37 for the lasers of multiple optical fiber laser heads 11 to pass through. The outer wall of the rotating ring 35 is circularly fixed with multiple cleaning sponges 38, and the multiple cleaning sponges 38 are respectively located between multiple adjacent light-transmitting ports 37.

[0026] The rotating ring 35 can move vertically together with the detection ring 10 and rotate with the shield 5. When the rotating ring 35 rotates, the multiple cleaning sponges 38 on its outer wall can slide in contact with the ends of the multiple fiber optic laser heads 11 to prevent dust and other impurities from adhering to and affecting the transmission and reception of the fiber optic laser heads 11, reduce the frequency of manual cleaning, and ensure the continuous progress of the detection work.

[0027] When the shield 5 is rotated to completely block the opening 3 and no longer needs to be rotated, the multiple light-transmitting openings 37 opened on the surface of the rotating ring 35 will respectively correspond to the end positions of the multiple fiber optic laser heads 11, thereby not affecting the subsequent detection ring 10 carrying the multiple fiber optic laser heads 11 in the process of moving downward for detection, and the transmission and reception of the fiber optic laser heads 11.

[0028] Reference Figure 14-16 The surface of the rotating rod 12 is circumferentially fixed with multiple mounting shells 39, and a plug block 40 is vertically slidably inserted in the mounting shell 39. An energized spring 41 is vertically provided on the top wall of the mounting shell 39. The bottom end of the energized spring 41 is fixedly connected to the top of the plug block 40. The bottom of the mounting groove is circumferentially provided with multiple slots 42. The bottom ends of the multiple plug blocks 40 are respectively slidably inserted in the multiple slots 42. A photosensitive component is provided in the light-transmitting port 37. Multiple groups of photosensitive components are respectively used to control the expansion and contraction of multiple energized springs 41. The photosensitive component includes a light-sensitive sensor 43 fixedly installed in the light-transmitting port 37. A cavity is provided in the shield 5, and a storage device is provided in the cavity. The battery module includes a power supply unit for providing electrical energy and a control unit including multiple independent control circuits (the battery module is disclosed in the patent publication number CN112217260B, the patent name is a battery pack charge and discharge control module and control method, which belongs to the prior art and its working principle is not described in detail here). Each photosensor 43 is connected in series with the signal input end of the corresponding control circuit through a first wire, and the signal output end of each control circuit is connected in series with the corresponding power-on spring 41 through a second wire. The power supply ends of multiple control circuits are connected in parallel to the power supply unit to form a complete control loop.

[0029] When the detection ring 10 is at the highest point and the hole 3 is in the open state, since the detection ring 10 does not need to detect the object at this time, the multiple fiber optic laser heads 11 do not work, and the multiple photosensitive sensors 43 will not feel the laser intensity of the fiber optic laser head 11, and their resistance is relatively large, so the multiple powered springs 41 are not energized at this time and will be in a natural state, and the multiple plug-ins 40 will also be respectively inserted into the multiple slots 42 to achieve the initial fixation of the rotating rod 12.

[0030] When the fiber laser head 11 is working, the laser it emits passes through the light-transmitting port 37, and the photosensor 43 detects the laser intensity. If the laser intensity emitted by all fiber laser heads 11 is normal, the photosensor 43 transmits the signal to the battery module, and the battery module supplies power to the corresponding energized spring 41. The energized spring 41 contracts, driving the plug 40 to move upward, so that the bottom end of the plug 40 is pulled out of the slot 42, releasing the lock on the rotating rod 12. Then, when the lifting cylinder 6 moves downward with the detection ring 10, the rotating rod 12 can rotate normally with the shield 5 to block the through hole 3.

[0031] If the laser intensity emitted by one or more fiber laser heads 11 is weak, the corresponding photosensor 43 will not trigger the battery module to power the corresponding power-on spring 41 after detecting the abnormal signal. The power-on spring 41 remains in a naturally extended state, and the bottom end of the plug 40 is still inserted in the slot 42, so that the rotating rod 12 will remain locked. When the lifting cylinder 6 moves downward with the detection ring 10, the shutter 5 cannot rotate normally, and the opening 3 will not be blocked. This state change can promptly remind the staff of the device failure, avoid the system from continuing to use erroneous data calculations due to the failure of a single or multiple fiber laser heads 11, prevent the final detection result from being distorted, and significantly improve the reliability and accuracy of the detection.

[0032] Since the multiple photosensors 43 correspond to the positions of the multiple fiber laser heads 11 and the multiple plug blocks 40 for locking the rotating rod 12, when a fault occurs, the plug block 40 corresponding to the position of the abnormal fiber laser head 11 will remain inserted in the slot 42, while the plug block 40 corresponding to the position of the normal fiber laser head 11 will be removed from the slot 42. The staff can quickly locate the faulty fiber laser head 11 by observing the locking status of the multiple plug blocks 40, which is convenient for timely replacement, greatly shortening the troubleshooting time, improving maintenance efficiency, ensuring that the detection work returns to normal as soon as possible, and further ensuring the continuity of the detection process and the reliability of the results.

[0033] The bottom end of the sliding rod 36 is provided with a first wire collecting port penetrating the top end, the bottom end of the connecting rod 13 is provided with a second wire collecting port in communication with the cavity, and the groove wall of the sliding groove 34 is provided with a moving port in communication with the cavity, a plurality of first wires are integrated in the first wire collecting port, and the end of the plurality of first wires away from the photosensitive sensor 43 penetrates the moving port, a plurality of second wires are integrated in the second wire collecting port, and the end of the plurality of second wires away from the energizing spring 41 penetrates into the cavity.

[0034] The first wire collecting port and the second wire collecting port can avoid the disorderly distribution of the first wires and the second wires, make the internal circuit layout of the equipment more regular, facilitate quick identification and arrangement of the circuit during later maintenance, secondly, the first wire collecting port, the second wire collecting port and the moving port form effective constraints on the first wires and the second wires, reduce the friction and pulling of the first wires and the second wires with other components during equipment operation, reduce the risk of wire wear or breakage, ensure the stability of the circuit connection, and at the same time, the regular wire layout and effective protection measures ensure that the power and signal transmission between the photosensitive sensor 43, the energizing spring 41 and the battery module is not disturbed by the circuit problem, so that the control of the photosensitive component on the energizing spring 41 is more accurate, thereby ensuring the stable realization of the locking and unlocking functions of the shutter 5, and providing circuit protection for reliable performance of the overall detection work of the equipment.

[0035] In the present application, the mounting cylinder 2 and the shutter 5 are both coated with light shielding paint, and the shutter 5 can be controlled to open and close with the rotating rod 12, the connecting rod 13 and the lifting component during the vertical movement detection of the detection ring 10, which reduces the manual operation steps, effectively blocks the external light interference, creates a stable dark environment for the detection work of the fiber laser head 11, avoids the influence of stray light on the laser transmission detection data, makes the signal received by the data converter more accurate, and greatly improves the accuracy of optical transmission detection.

[0036] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A lifting fiber optic light transmission detector, comprising a platform (1), characterized in that: The upper surface of the platform (1) is fixedly mounted with a mounting tube (2) with a closed top, a through-hole (3) is provided on the surface of the mounting tube (2), an arc-shaped sliding opening (4) is provided on the wall of the through-hole (3), an arc-shaped shielding plate (5) is slidably mounted in the sliding opening (4), the surfaces of the shielding plate (5) and the mounting tube (2) are both coated with light-shielding paint, a lifting cylinder (6) is fixedly mounted on the upper surface of the platform (1), a mounting plate (7) is fixedly mounted on the driving shaft of the lifting cylinder (6), and the mounting plate (7) is fixedly mounted. A mounting rod (8) is provided, the bottom end of the mounting rod (8) is inserted into the mounting tube (2) and fixedly mounted with a U-shaped plate (9), a detection ring (10) is provided in the mounting tube (2), an annular cavity is provided in the detection ring (10), a data converter is provided in the annular cavity, a plurality of fiber laser heads (11) are fixedly mounted on the inner wall of the detection ring (10) in a circular shape, and the plurality of fiber laser heads (11) are electrically connected to the data converter, and a three-jaw chuck (47) for fixing an object is provided on the upper surface of the platform (1); The surface of the platform (1) is provided with a mounting groove, the bottom of the mounting groove is provided with a rotating rod (12) which is vertically rotatable, the surface of the rotating rod (12) is fixedly provided with an L-shaped connecting rod (13), the top wall of the mounting groove is provided with an arc-shaped sliding opening (14), the top end of the connecting rod (13) passes through the sliding opening (14) and is fixedly connected to the bottom of the shield (5), and the rotating rod (12) is controlled to rotate by a threaded assembly.

2. The lifting type optical fiber light transmission detector according to claim 1, characterized in that: The threaded assembly includes a first spring rod (15), a threaded rod (16) and a pulling component. The groove wall of the installation groove is vertically provided with a rectangular groove. The bottom end of the first spring rod (15) is fixedly connected to the bottom of the rectangular groove. The top end of the first spring rod (15) is fixedly connected to the threaded rod (16) through a connecting plate (17). The top of the rotating rod (12) is vertically provided with a threaded groove (18). The bottom thread of the threaded rod (16) is installed in the threaded groove (18). The pulling component is used to give the threaded rod (16) an upward pulling force.

3. The lifting type optical fiber light transmission detector according to claim 2, characterized in that: The lifting component comprises a U-shaped block (19) fixedly connected to the mounting plate (7) through a vertical plate (48), two second spring rods (20) symmetrically fixedly mounted on the inner wall of the U-shaped block (19), two rectangular plates (21) respectively fixedly mounted on the ends of the two second spring rods (20), and two lifting plates (22). The groove wall of the mounting groove is symmetrically vertically provided with vertical openings, the two ends of the U-shaped block (19) respectively pass through the two vertical openings, the bottom of the rectangular plate (21) is provided with a mounting opening, a first rotating shaft (23) is horizontally rotatably mounted in the mounting opening, and the two lifting plates (22) are respectively fixedly sleeved on the two first rotating shafts (23). ), one end of the first rotating shaft (23) passes through the rectangular plate (21) and is fixedly installed with a mounting block, a first torsion spring (24) is sleeved on the first rotating shaft (23), and the two ends of the first torsion spring (24) are fixedly connected to the mounting block and the rectangular plate (21) respectively, and the pulling plate (22) is restricted from rotating downward by a first limiting component, and a force-bearing plate (25) is symmetrically fixedly installed on the surface of the top end of the threaded rod (16), and the two force-bearing plates (25) are respectively located on the moving paths of the two pulling plates (22), and a pressing component is provided in the mounting groove, and the pressing component is used to control the two second spring rods (20) to shrink together.

4. The lifting type optical fiber light transmission detector according to claim 3, characterized in that: The first limiting component includes a limiting rod (26) fixedly mounted on the surface of the lifting plate (22); an arc-shaped opening (27) is formed on the wall of the mounting opening with the first rotating shaft (23) as the center, and one end of the limiting rod (26) is slidably mounted in the arc-shaped opening (27).

5. The lifting type optical fiber light transmission detector according to claim 3, characterized in that: The pressing component comprises two inclined plates (28) and two baffles (29) symmetrically fixedly mounted on the walls of the mounting grooves. A push rod (30) is fixedly mounted on the surface of the movable end of the second spring rod (20). A through hole (31) is vertically opened on the surface of the inclined plate (28). A second rotating shaft (32) is horizontally rotatably mounted in the through hole (31). The two baffles (29) are respectively fixedly mounted on the ends of the two second rotating shafts (32). A second torsion spring (33) is sleeved on the second rotating shaft (32). The two ends of the second torsion spring (33) are respectively fixedly connected to the wall of the through hole (31) and the surface of the baffle (29). The two push rods (30) correspond to the positions of the two through holes (31) respectively. A second limiting component for limiting the downward rotation of the baffle (29) is provided in the through hole (31).

6. The lifting type optical fiber light transmission detector according to claim 5, characterized in that: The second limiting component comprises a limiting block (44) fixedly mounted on the wall of the through opening (31), and the lower surface of the baffle (29) abuts against the upper surface of the limiting block (44).

7. The lifting type optical fiber light transmission detector according to claim 1, characterized in that: The inner wall of the shield (5) is vertically provided with a slide groove (34), a rotating ring (35) is provided in the detection ring (10), and a sliding block (45) is symmetrically fixedly installed on the outer wall of the rotating ring (35), and an annular groove (46) is provided on the inner wall of the detection ring (10), and the two sliding blocks (45) are slidably installed in the annular groove (46), and an L-shaped slide rod (36) is fixedly installed on the upper surface of the rotating ring (35), and the end of the slide rod (36) away from the rotating ring (35) is slidably installed in the slide groove (34), and the ring wall of the rotating ring (35) is circumferentially provided with a plurality of light-transmitting ports (37) for the lasers of a plurality of optical fiber laser heads (11) to pass through, and the outer wall of the rotating ring (35) is circumferentially provided with a plurality of cleaning sponges (38), and the plurality of cleaning sponges (38) are respectively located between a plurality of adjacent light-transmitting ports (37).

8. The lifting type optical fiber light transmission detector according to claim 7, characterized in that: The surface of the rotating rod (12) is circularly fixed with a plurality of mounting shells (39), an insert block (40) is vertically slidably inserted in the mounting shell (39), an energized spring (41) is vertically provided on the top wall of the mounting shell (39), the bottom end of the energized spring (41) is fixedly connected to the top end of the insert block (40), the bottom of the mounting groove is circularly provided with a plurality of slots (42), the bottom ends of the plurality of insert blocks (40) are respectively slidably inserted in the plurality of slots (42), a photosensitive component is provided in the light-transmitting port (37), and a plurality of groups of the photosensitive components are respectively used to control the extension and contraction of the plurality of energized springs (41).

9. The lifting type optical fiber light transmission detector according to claim 8, characterized in that: The photosensitive component includes a photosensor (43) fixedly mounted in the light-transmitting port (37); a cavity is provided in the shield (5); a battery module is provided in the cavity; the battery module includes a power supply unit for providing electrical energy and a control unit including a plurality of independent control circuits; each of the photosensors (43) is connected in series with a signal input terminal of a corresponding control circuit via a first conductor; a signal output terminal of each of the control circuits is connected in series with a corresponding energized spring (41) via a second conductor; and the power supply terminals of the plurality of control circuits are connected in parallel to the power supply unit.

10. The lifting type optical fiber light transmission detector according to claim 9, characterized in that: The bottom end of the slide bar (36) is provided with a first wire receiving opening that passes through the top end, the bottom end of the connecting rod (13) is provided with a second wire receiving opening that is connected to the cavity, and the groove wall of the slide groove (34) is provided with a movable opening that is connected to the cavity, and the plurality of first wires are integrated into the first wire receiving opening, and the ends of the plurality of first wires away from the photosensor (43) pass through the movable opening, and the plurality of second wires are integrated into the second wire receiving opening, and the ends of the plurality of second wires away from the energized spring (41) pass into the cavity.

Images