Image measuring instrument with adjustable positioning function

Abstract

The invention provides an image measuring instrument with an adjustable positioning function, and relates to the field of photogrammetry. Comprising a mounting seat arranged on an image measuring instrument body; the camera further comprises a protective cover, a photographic lens is arranged in the protective cover, a top end opening of the protective cover is fixedly connected with the mounting base, two protective covers are arranged at a bottom end opening of the protective cover, sealing gaskets are fixedly laid on the top faces of the protective covers, and the two protective covers are connected with an opening and closing mechanism. The angle adjusting mechanism is connected with the photographic lens so as to adjust the camera shooting measurement angle of the photographic lens, and the angle adjusting mechanism is provided with a positioning part; and the clean air inflation mechanism is arranged in the mounting base, and the clean air inflation mechanism is connected with a top end opening of the protective cover. The angle of the camera lens can be adjusted, positioning is carried out through the positioning part after adjustment, and the requirement for multi-angle camera measurement of an object to be measured is met. Meanwhile, a dustproof protection effect is provided for the pick-up lens, and the cleanness of the pick-up lens is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of photogrammetry, and particularly to an image measuring instrument with an adjustable positioning function. Background Art

[0002] An image measuring instrument is a high-precision and high-tech measuring instrument widely used in industries such as machinery, electronics, instrumentation, hardware, and plastics.

[0003] The image measuring instrument performs photogrammetry through the lens thereon; when in use, the shooting angle is generally fixed, which cannot meet the shooting requirements of the object to be measured at different angles; further, the lens position lacks a protection design and is exposed to the external environment for a long time in both the working state and the non-working state. Especially in some areas with relatively large dust, dust and dirt are easily attached to the lens, affecting photogrammetry. Summary of the Invention

[0004] The present invention provides an image measuring instrument with an adjustable positioning function to solve the technical problems of the lack of angle adjustment and protection of the lens.

[0005] The present invention solves the above technical problems through the following technical solutions: The present invention provides an image measuring instrument with an adjustable positioning function, including an image measuring instrument body and a mounting seat provided on the image measuring instrument body; further including: a protective cover, a photographic lens is arranged inside the protective cover, the top port of the protective cover is fixedly connected to the mounting seat, and two protective covers are arranged at the bottom port of the protective cover. A sealing gasket is fixedly laid on the top surface of the protective cover, and the two protective covers are connected with an opening and closing mechanism, and the opening and closing mechanism can close the bottom port of the protective cover or open the bottom port of the protective cover; an angle adjustment mechanism, the angle adjustment mechanism is connected to the photographic lens to adjust the shooting angle of the photographic lens for photogrammetry, and the angle adjustment mechanism is provided with a positioning part for positioning after the angle adjustment; a lubricating part, the lubricating part is arranged at the bottom port of the protective cover, and the lubricating part is used for lubricating the protective cover and the bottom port of the protective cover; a clean air inflation mechanism, the clean air inflation mechanism is arranged in the mounting seat and is connected to the top port of the protective cover.

[0006] In this technical solution, the angle adjustment of the photographic lens can be realized, and positioning can be performed through the positioning part after adjustment, meeting the multi-angle photogrammetry requirements of the object to be measured; at the same time, dust protection effect is provided for the photographic lens, ensuring the cleanliness of the photographic lens.

[0007] Preferably, the angle adjustment mechanism includes a rotating shaft rotatably installed inside the protective cover, the rotating shaft is fixedly connected to the photographic lens, the front end of the rotating shaft extends outside the protective cover, and a rotating disk is fixedly installed at the front end of the rotating shaft.

[0008] In this technical solution, the angle adjustment mechanism is used to adjust the imaging measurement angle of the camera lens.

[0009] Preferably, the positioning part includes a movable rod and an arc-shaped strip seat; a groove is formed inside the rotating shaft along the length direction, a hole perpendicular to the groove is formed in the rotating disk along the radial direction, and the hole communicates with the front end of the groove. The movable rod is L-shaped and is slidably installed in the hole and the groove. One end of the movable rod extends to the outside of the cylindrical surface of the rotating disk, and a pressing block is fixedly connected to the end of the movable rod extending to the outside of the cylindrical surface of the rotating disk. An identification hole is formed at the end of the movable rod extending to the outside of the cylindrical surface of the rotating disk. A bottom groove is formed at the bottom of the groove, a first spring is arranged in the bottom groove, and the movable rod is elastically connected to the bottom groove wall through the first spring. A positioning insertion rod is fixedly connected to the part of the movable rod located in the groove. A guide groove is formed on the outer wall of the rotating shaft, the positioning insertion rod penetrates through the guide groove, and the positioning insertion rod is slidably connected to the guide groove. The arc-shaped strip seat is fixedly connected to the inner wall of the protective cover, and a plurality of positioning grooves for the positioning insertion rod to insert are formed along the length direction on the inner side of the arc-shaped strip seat.

[0010] In this technical solution, the positioning part is used for positioning after the angle of the camera lens is adjusted.

[0011] Preferably, a protective housing is fixedly installed on the back outer wall of the protective cover, and the opening and closing mechanism is arranged in the protective housing; the opening and closing mechanism includes a transmission part, a locking part and a third gear; a second rotating shaft is fixedly connected to the middle of the third gear, and the second rotating shaft is rotatably connected to the back outer wall of the protective cover. The top and bottom of the third gear are respectively meshed with a second rack and a first rack. A first chute and a second chute are formed at the bottom of the protective housing. The second rack is fixedly connected with a connecting rod, a sliding part is arranged on the connecting rod, and the sliding part is slidably connected to the second chute. A sliding block is slidably connected to the first chute, and the connecting rod and the sliding block are respectively fixedly connected to two protective covers.

[0012] In this technical solution, the opening and closing mechanism is used to drive the protective cover to open or close the bottom port of the protective cover.

[0013] Preferably, the transmission part includes a pressure-receiving column, a first connecting strip, and a first rotating shaft; the first rotating shaft is rotatably connected to the outer wall of the back side of the protective cover, a first belt pulley is fixedly sleeved on the first rotating shaft, a second belt pulley is fixedly sleeved on the second rotating shaft, a transmission belt is wound between the first belt pulley and the second belt pulley, a second gear is also fixedly sleeved on the first rotating shaft, the second gear is meshed with a third rack, the top end of the third rack is fixedly connected with a guide sleeve, the guide sleeve is in clearance fit with a first guide post, the top end of the first guide post is fixedly connected with the inner wall of the top of the protective housing, the third rack is fixedly connected with a first connecting strip, the first connecting strip is fixedly connected with a pressure-receiving column, the movable rod extends into the protective housing, and one end of the movable rod located inside the protective housing is fixedly connected with a round cover, the round cover is coaxially arranged with the rotating shaft, the pressure-receiving column is located inside the round cover, and the pressure-receiving column is in contact with the inner wall of the top of the round cover.

[0014] In this technical solution, the transmission part enables the opening and closing mechanism to be driven by the movable rod, and by operating a single pressing block, the positioning part and the opening and closing mechanism are controlled.

[0015] Preferably, the locking part includes a first gear, a fourth rack, and a second connecting strip; the first gear is fixedly sleeved on the first rotating shaft, the first gear is meshed with the fourth rack, the top end of the fourth rack is fixedly connected with a second connecting strip, a guide hole is formed in the second connecting strip, the guide hole is in clearance fit with a second guide post, the top end of the second guide post is fixedly connected with the inner wall of the top of the protective housing, a hook is fixedly installed on the second connecting strip, a push-button lock is arranged above the hook, and the push-button lock is fixedly installed on the inner wall of the top of the protective housing; a second spring is arranged between the top of the second connecting strip and the inner wall of the top of the protective housing.

[0016] In this technical solution, the locking part is used for locking the opening and closing mechanism when the bottom port of the protective cover is in the open state by the opening and closing mechanism.

[0017] Preferably, the lubricating part includes an annular groove formed on the bottom edge of the protective cover, an oil storage cotton strip is arranged in the annular groove, and the annular groove is connected with an oil supply mechanism.

[0018] In this technical solution, the lubricating part is used for lubricating the sealing gasket on the protective cover.

[0019] Preferably, the oil supply mechanism includes an oil storage box and an elastic capsule; the oil storage box is fixedly installed on the outer side wall of the protective housing, the elastic capsule is fixedly installed on the inner side wall of the protective housing, a first one-way valve and a second one-way valve are installed on one side of the elastic capsule close to the oil storage box, the first one-way valve is connected with the oil storage box through an oil inlet pipe, the second one-way valve is connected with an oil outlet pipe, the oil outlet pipe is connected with the annular groove, an oil filling port is arranged on the top of the oil storage box, and a sealing cover is installed on the oil filling port.

[0020] In this technical solution, the oil supply mechanism is used to provide lubricating oil to the lubricating part.

[0021] Preferably, the clean air inflation mechanism includes a blower; a lower cavity, an upper cavity and a communication port are formed in the mounting seat; the air outlet of the blower is communicated with the top end of the protective cover through the lower cavity, the air inlet of the blower is communicated with the communication port through the upper cavity, and a filter is installed on the communication port.

[0022] In this technical solution, in the working state, clean air flow is introduced into the protective cover through the clean air inflation mechanism, which plays a role in preventing dust from entering the protective cover, and thus provides dust protection for the camera lens.

[0023] Preferably, the blower is electrically connected to a key switch, and the key switch is located on one side of the elastic bladder. A push bar is arranged on the side of the key switch and the elastic bladder, and one end of the push bar is fixedly connected to the second rack.

[0024] In this technical solution, the movement of the second rack drives the push bar to move, pressing the key switch and the elastic bladder, so as to realize the operation of the blower and the oil supply mechanism.

[0025] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0026] The positive and progressive effects of the present invention are as follows: The above-mentioned image measuring instrument with adjustable positioning function adjusts the camera lens to different shooting angles through the angle adjustment mechanism to meet the needs of multi-angle measurement of the item to be measured; further, a protective cover, a protective cap and an opening and closing mechanism are provided. In the non-working state, the bottom end of the protective cover is closed by the protective cap, so that the camera lens is located in a closed protection space, playing a role in dust prevention. In the working state, the opening and closing mechanism enables the protective cap to cancel the shielding of the bottom port of the protective cover, and at the same time, the clean air inflation mechanism introduces clean air flow into the protective cover. Through the action of the air flow, dust adhesion to the camera lens in the working state is avoided, providing a good dust protection effect for the camera lens; furthermore, a sealing gasket is provided on the protective cap to improve the sealing effect of the protective cap on the bottom end of the protective cover, and a lubricating part is provided, which can provide a lubricating effect and reduce the wear of the sealing gasket during the opening and closing process of the protective cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the whole of the present invention.

[0028] Figure 2 It is a schematic structural diagram of the inside of the mounting seat and the protective cover of the present invention.

[0029] Figure 3Schematic diagram of the bottom of the protective cover of the present invention.

[0030] Figure 4 Schematic diagram of the inside of the protective cover of the present invention.

[0031] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of A in

[0032] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of B in

[0033] Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure of C in

[0034] Figure 8 Schematic diagram of the protective cover and the protective housing of the present invention.

[0035] Figure 9 Schematic diagram of the inside of the protective housing of the present invention.

[0036] Figure 10 Schematic diagram of the opening and closing mechanism of the present invention.

[0037] Figure 11 Schematic diagram of the first chute and the second chute of the present invention.

[0038] Figure 12 For the present invention Figure 8 Schematic diagram of the enlarged structure of D in

[0039] Figure 13 Schematic diagram of the oil supply mechanism of the present invention.

[0040] Explanation of reference numerals 1. Imaging measuring instrument body; 2. Mounting base; 3. Protective cover; 4. Rotary disk; 5. Photography lens; 6. Clean air inflation mechanism; 601. Fan; 602. Lower cavity; 603. Upper cavity; 604. Communication port; 605. Filter; 7. Angle adjustment mechanism; 701. Rotating shaft; 702. Groove body; 703. Movable rod; 7031. Identification hole; 704. Bottom groove; 705. First spring; 706. Hole body; 707. Arc-shaped strip seat; 708. Positioning groove; 709. Positioning insertion rod; 710. Guide groove; 8. Protection housing; 801. First chute; 802. Second chute; 9. Oil supply mechanism; 901. Oil storage box; 902. Refueling port; 903. Elastic capsule; 904. First one-way valve; 905. Oil inlet pipe; 906. Second one-way valve; 907. Oil outlet pipe; 10. Protective cover; 11. Pressing block; 12. Round cover; 13. Annular groove; 1301. Oil storage cotton strip; 14. Opening and closing mechanism; 1401. First rack; 1402. Second rack; 1403. Compressed column; 1404. First connecting strip; 1405. Third rack; 1406. Guide sleeve; 1407. First guide post; 1408. First rotating shaft; 1409. First pulley; 1410. First gear; 1411. Second gear; 1412. Fourth rack; 1413. Second connecting strip; 1414. Second guide post; 1415. Second spring; 1416. Second rotating shaft; 1417. Second pulley; 1418. Transmission belt; 1419. Third gear; 1420. Connecting rod; 1421. Sliding part; 1422. Sliding block; 15. Push strip; 16. Press-type lock; 17. Hook; 18. Button switch. Detailed implementation mode

[0041] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the described embodiments.

[0042] As Figures 1 - 13As shown in the figure, an image measuring instrument with an adjustable positioning function includes an image measuring instrument body 1 and a mounting base 2 provided on the image measuring instrument body 1; it further includes: a protective cover 3, inside which a photographic lens 5 is provided. The top port of the protective cover 3 is fixedly connected to the mounting base 2, and two protective covers 10 are provided at the bottom port of the protective cover 3. A sealing gasket is fixedly laid on the top surface of the protective cover 10. The two protective covers 10 are connected to an opening and closing mechanism 14, and the opening and closing mechanism 14 can close the bottom port of the protective cover 3 with the two protective covers 10 or open the bottom port of the protective cover 3; an angle adjustment mechanism 7, which is connected to the photographic lens 5 to adjust the imaging measurement angle of the photographic lens 5. The angle adjustment mechanism 7 is provided with a positioning part to provide positioning after the angle adjustment; a lubricating part, which is provided at the bottom port of the protective cover 3 and is used for lubricating the protective cover 10 and the bottom port of the protective cover 3; a clean air inflation mechanism 6, which is provided in the mounting base 2 and is connected to the top port of the protective cover 3.

[0043] As Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown in the figure, the angle adjustment mechanism 7 includes a rotating shaft 701 rotatably installed inside the protective cover 3. The rotating shaft 701 is fixedly connected to the photographic lens 5. The front end of the rotating shaft 701 extends outside the protective cover 3, and a rotating disc 4 is fixedly installed at the front end of the rotating shaft 701.

[0044] The positioning part includes a movable rod 703 and an arc-shaped strip seat 707; a groove 702 is opened along the length direction inside the rotating shaft 701. A hole 706 perpendicular to the groove 702 is opened in the rotating disc 4 along the radial direction, and the hole 706 communicates with the front end of the groove 702. The movable rod 703 is L-shaped and is slidably installed in the hole 706 and the groove 702. One end of the movable rod 703 extends outside the cylindrical surface of the rotating disc 4, and a pressing block 11 is fixedly connected to the end of the movable rod 703 extending outside the cylindrical surface of the rotating disc 4. An identification hole 7031 is opened at the end of the movable rod 703 extending outside the cylindrical surface of the rotating disc 4. A bottom groove 704 is opened at the bottom of the groove 702. A first spring 705 is arranged in the bottom groove 704. The movable rod 703 is elastically connected to the wall of the bottom groove 704 through the first spring 705. A positioning insertion rod 709 is fixedly connected to the part of the movable rod 703 located in the groove 702. A guide groove 710 is opened on the outer wall of the rotating shaft 701. The positioning insertion rod 709 penetrates through the guide groove 710 and is slidably connected to the guide groove 710. The arc-shaped strip seat 707 is fixedly connected to the inner wall of the protective cover 3, and a plurality of positioning grooves 708 for the positioning insertion rod 709 to insert are opened along the length direction on the inner side of the arc-shaped strip seat 707.

[0045] When performing the camera measurement of the object to be measured, in the initial state, the camera lens is in a vertical state. As Figure 4 shown, that is, at the beginning, the camera measurement in the vertical direction is carried out. After the camera measurement in the vertical direction is completed, the angle is adjusted for the camera measurement at other angular positions.

[0046] The angle adjustment is specifically as follows. By pressing down the pressing block 11, the pressing block 11 drives the movable rod 703 to move downward. Specifically, the part of the movable rod 703 marked with the identification hole 7031 enters the hole body 706. The movable rod 703 drives the positioning insertion rod 709 to leave a positioning groove 708, canceling the positioning. At the same time, the first spring 705 is compressed. Then, while maintaining the above pressing state of the pressing block 11, the rotary disk 4 is rotated, so that the rotary shaft 701, the camera lens, and the structures inside the rotary shaft 701 rotate together to adjust the alignment of the positioning insertion rod 709 with different positioning grooves 708 on the arc-shaped strip seat 707. After adjusting to the required angle, the position of the rotary disk 4 is saved, and the pressing block 11 is released. Through the elastic force of the first spring 705, the movable rod 703, the positioning insertion rod 709, and the pressing block 11 are reset, and the positioning insertion rod 709 is inserted into the positioning groove 708 to provide positioning after the angle adjustment.

[0047] Through the above angle adjustment, the multi-angle camera measurement of the object to be measured can be carried out.

[0048] In specific implementation, angle marking scales can be provided on the front outer wall of the protective cover 3, and a pointer can be provided on the part of the rotary shaft 701 outside the protective cover 3, and the pointer is flush with the part of the movable rod 703 inside the hole body 706. When the rotary shaft 701 rotates, the pointer moves on the angle marking scale, and the adjusted angle of the camera lens can be displayed. In specific implementation, the included angle between every two adjacent positioning grooves 708 is 2°. By adjusting the pointer to rotate 2° each time, after each adjustment, the positioning insertion rod 709 is aligned with a positioning groove 708.

[0049] As Figure 4 and Figures 8 - 11As shown, a protective housing 8 is fixedly installed on the back outer wall of the protective cover 3, and the opening and closing mechanism 14 is arranged inside the protective housing 8; the opening and closing mechanism 14 includes a transmission part, a locking part, and a third gear 1419; a second rotating shaft 1416 is fixedly connected to the middle of the third gear 1419, the second rotating shaft 1416 is rotatably connected to the back outer wall of the protective cover 3, the top and bottom of the third gear 1419 are respectively meshed with a second rack 1402 and a first rack 1401, a first chute 801 and a second chute 802 are formed at the bottom of the protective housing 8, the second rack 1402 is fixedly connected with a connecting rod 1420, a sliding part 1421 is arranged on the connecting rod 1420, the sliding part 1421 is slidably connected with the second chute 802, a sliding block 1422 is slidably connected with the first chute 801, and the connecting rod 1420 and the sliding block 1422 are respectively fixedly connected with two protective covers 10.

[0050] The transmission part includes a pressure receiving column 1403, a first connecting bar 1404, and a first rotating shaft 1408; the first rotating shaft 1408 is rotatably connected to the back outer wall of the protective cover 3, a first belt pulley 1409 is fixedly sleeved on the first rotating shaft 1408, a second belt pulley 1417 is fixedly sleeved on the second rotating shaft 1416, a transmission belt 1418 is wound between the first belt pulley 1409 and the second belt pulley 1417, a second gear 1411 is also fixedly sleeved on the first rotating shaft 1408, the second gear 1411 is meshed with a third rack 1405, the top end of the third rack 1405 is fixedly connected with a guide sleeve 1406, the guide sleeve 1406 is in clearance fit with a first guide post 1407, the top end of the first guide post 1407 is fixedly connected with the top inner wall of the protective housing 8, the third rack 1405 is fixedly connected with a first connecting bar 1404, the first connecting bar 1404 is fixedly connected with a pressure receiving column 1403, the movable rod 703 extends into the protective housing 8, and one end of the movable rod 703 located inside the protective housing 8 is fixedly connected with a round cover 12, the round cover 12 is coaxially arranged with the rotating shaft 701, the pressure receiving column 1403 is located inside the round cover 12, and the pressure receiving column 1403 is in contact with the top inner wall of the round cover 12.

[0051] The locking portion includes a first gear 1410, a fourth rack 1412, and a second connecting bar 1413; the first gear 1410 is fixedly sleeved on a first rotating shaft 1408, the first gear 1410 is meshed and connected with the fourth rack 1412, the top end of the fourth rack 1412 is fixedly connected with a second connecting bar 1413, a guide hole is formed in the second connecting bar 1413, the guide hole is in clearance fit connection with a second guide post 1414, the top end of the second guide post 1414 is fixedly connected with the inner wall of the top of the protection housing 8, a hook 17 is fixedly installed on the second connecting bar 1413, a push-button lock 16 is arranged above the hook 17, and the push-button lock 16 is fixedly installed on the inner wall of the top of the protection housing 8; a second spring 1415 is arranged between the top of the second connecting bar 1413 and the inner wall of the top of the protection housing 8.

[0052] Before performing the camera measurement on the object to be measured, it is necessary to open the protective cover 10 first; specifically, before opening the protective cover 10, the camera lens is in a vertical state. Press down the pressing block 11 so that the pressing block 11 fits against the cylindrical surface of the rotating disk 4. The pressing block 11 drives the movable rod 703 to move downward, so that the part of the movable rod 703 outside the rotating disk 4 is completely retracted into the hole body 706. The movable rod 703 drives the round cover 12 to move downward, and the round cover 12 presses down the pressure receiving column 1403. The pressure receiving column 1403 drives the third rack 1405 to move downward through the first connecting bar 1404. Through the meshing of the third rack 1405 and the second gear 1411, the first rotating shaft 1408 and the first gear 1410 and the first belt pulley 1409 on the first rotating shaft 1408 rotate together. Through the transmission of the transmission belt 1418, the second belt pulley 1417 rotates. The second belt pulley 1417 rotates the second rotating shaft 1416 and the third gear 1419. The third gear 1419 meshes with the first rack 1401 and the second rack 1402. The first rack 1401 drives one protective cover 10 to move through the sliding block 1422, and the second rack 1402 drives the other protective cover 10 to move through the connecting rod 1420. The two protective covers 10 move away from each other to achieve opening.

[0053] In the above, the first gear 1410 rotates, driving the fourth rack 1412 to move upward. The second connecting bar 1413 moves upward together with the fourth rack 1412. The second guide post 1414 and the guide hole provide guidance, and at the same time compress the second spring 1415, and the hook 17 is inserted into the push-button lock 16 for locking to maintain the open state of the protective cover 10.

[0054] Release the pressing block 11, and it is reset by the elastic force of the first spring 705.

[0055] In summary, the positioning part of the angle adjustment mechanism 7 and the operation of the opening and closing mechanism 14 can be carried out through a single pressing block 11, without the need to set two operating structures, which provides convenience for the overall use.

[0056] Through the design of the locking part as described above, the open state of the protective cover 10 can be maintained, and at the same time, the pressure receiving column 1403 remains in the position after being pressed down. In the subsequent process of adjusting the angle of the camera lens, only the part of the movable rod 703 marked with the identification hole 7031 enters the hole body 706, so that the round cover 12 moves a small distance, and the round cover 12 does not press down the pressure receiving column 1403. That is, during the process of adjusting the angle of the camera lens, the opening and closing mechanism 14 will not be affected.

[0057] After the camera measurement, the camera lens is reset to the vertical state, and then the pressing block 11 is pressed down, so that the round cover 12 presses down the pressure receiving column 1403, and the hook 17 presses the pressing type lock 16 to unlock. Release the pressing block 11, and the elastic force of the second spring 1415 makes the opening and closing mechanism 14 drive the protective cover 10 to reset; wait for the next camera measurement.

[0058] Among them, the diameter of the first pulley 1409 is larger than the diameter of the second pulley 1417, and the diameter of the third gear 1419 is larger than the diameter of the second gear 1411, which is used to amplify the moving distance of the pressure receiving column 1403 and ensure that the protective cover 10 can be opened.

[0059] As Figure 11 shown, the cross-sections of the first chute 801 and the second chute 802 are both cross-shaped, and the sliding block 1422 and the sliding part 1421 are adapted to the first chute 801 and the second chute 802, avoiding the problem of detachment in the vertical direction and only allowing sliding along the length directions of the first chute 801 and the second chute 802.

[0060] As Figure 7 and Figure 13 shown, the lubricating part includes an annular groove 13 opened on the bottom edge of the protective cover 3, an oil storage cotton strip 1301 is arranged in the annular groove 13, and the annular groove 13 is connected with an oil supply mechanism 9. The oil supply mechanism 9 includes an oil storage box 901 and an elastic capsule 903; the oil storage box 901 is fixedly installed on the outer side wall of the protection shell 8, the elastic capsule 903 is fixedly installed on the inner side wall of the protection shell 8, a first one-way valve 904 and a second one-way valve 906 are installed on the side of the elastic capsule 903 close to the oil storage box 901, the first one-way valve 904 is connected with the oil storage box 901 through an oil inlet pipe 905, the second one-way valve 906 is connected with an oil outlet pipe 907, the oil outlet pipe 907 is connected with the annular groove 13, a fuel filling port 902 is arranged on the top of the oil storage box 901, and a sealing cover is installed on the fuel filling port 902.

[0061] When the protective cover 10 moves, the sealing gasket is wiped by the oil storage cotton strip 1301, and the oil in it is smeared on the sealing gasket to provide lubrication.

[0062] The oil supply mechanism 9 supplies oil to the annular groove 13. Specifically, during each opening process of the protective cover 10, the push bar 15 on the second rack 1402 approaches the elastic bladder 903. The push bar 15 compresses the elastic bladder 903, squeezing out the oil in the elastic bladder 903. The oil enters the annular groove 13 through the second one-way valve 906 and the oil outlet pipe 907 to replenish the oil for the oil storage cotton strip 1301. When the protective cover 10 is closed, the push bar 15 leaves the elastic bladder 903, and the elastic bladder 903 resets, sucking the oil in the oil storage box 901 through the first one-way valve 904 and the oil inlet pipe 905.

[0063] In the above, the lubrication of the sealing gasket is realized, and the lubricating part is automatically supplied with oil through the opening and closing process of the protective cover 10.

[0064] Among them, the elastic bladder 903 can be made of rubber material and is in the shape of a corrugated pipe with both ends closed. At the same time, a spiral spring can be arranged inside for elastic reset.

[0065] As Figure 2 and Figure 12 shown, the clean air inflation mechanism 6 includes a blower 601; a lower cavity 602, an upper cavity 603 and a communication port 604 are formed in the mounting seat 2; the air outlet of the blower 601 is communicated with the top end of the protective cover 3 through the lower cavity 602, the air inlet of the blower 601 is communicated with the communication port 604 through the upper cavity 603, and a filter 605 is installed on the communication port 604.

[0066] The blower 601 is electrically connected to a key switch 18, and the key switch 18 is located on one side of the elastic bladder 903. A push bar 15 is arranged on the side of the key switch 18 and the elastic bladder 903, and the push bar 15 is fixedly connected to one end of the second rack 1402.

[0067] During the opening process of the protective cover 10, the push bar 15 squeezes the elastic bladder 903 and simultaneously presses the key switch 18 to automatically start the blower 601. After being filtered by the filter 605, the external air enters the blower 601 through the communication port 604 and the upper cavity 603, and then enters the protective cover 3 through the lower cavity 602, playing a role in preventing external dust from entering.

[0068] During the closing process of the protective cover 10, the push bar 15 is separated from the key switch 18, and the blower 601 is automatically turned off.

[0069] The filter 605 is preferably an activated carbon filter mesh.

[0070] The present invention is not limited to the above embodiments. No matter what changes are made in its shape or structure, they all fall within the protection scope of the present invention. The protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, and these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An image measuring instrument with an adjustable positioning function, comprising an image measuring instrument body (1) and a mounting seat (2) arranged on the image measuring instrument body (1); characterized in that: Also includes: A protective cover (3), wherein a photographic lens (5) is arranged inside the protective cover (3), a top port of the protective cover (3) is fixedly connected to a mounting seat (2), and a bottom port of the protective cover (3) is provided with two protective covers (10), a sealing gasket is fixedly laid on the top surface of the protective cover (10), and the two protective covers (10) are connected to an opening and closing mechanism (14), and the opening and closing mechanism (14) can enable the two protective covers (10) to close the bottom port of the protective cover (3) or to open the bottom port of the protective cover (3); An angle adjustment mechanism (7), the angle adjustment mechanism (7) being connected to the photographic lens (5) to adjust the angle of the photographic lens (5) for photographing and measuring, the angle adjustment mechanism (7) being provided with a positioning portion to provide positioning after the angle is adjusted; A lubrication portion, the lubrication portion being arranged at a bottom port of the protective cover (3), the lubrication portion being used for lubricating the protective cover (10) and the bottom port of the protective cover (3); A clean air-inflating mechanism (6), wherein the clean air-inflating mechanism (6) is arranged in the mounting seat (2), and the clean air-inflating mechanism (6) is connected to a top port of the protective cover (3).

2. The image measuring instrument with adjustable positioning function as claimed in claim 1, characterized in that: The angle adjustment mechanism (7) comprises a rotating shaft (701) rotatably mounted inside the protective cover (3); the rotating shaft (701) is fixedly connected to the photographic lens (5); the front end of the rotating shaft (701) extends outside the protective cover (3); and a rotating disk (4) is fixedly mounted on the front end of the rotating shaft (701).

3. The image measuring instrument with adjustable positioning function as claimed in claim 2, characterized in that: The positioning portion comprises a movable rod (703) and an arc-shaped bar seat (707); a groove body (702) is provided inside the rotating shaft (701) along the length direction; a hole body (706) perpendicular to the groove body (702) is provided on the rotating disk (4) along the radial direction, and the hole body (706) is connected to the front end of the groove body (702); the movable rod (703) is L-shaped, and the movable rod (703) is slidably installed in the hole body (706) and the groove body (702); one end of the movable rod (703) extends to the outside of the cylindrical surface of the rotating disk (4), and the end of the movable rod (703) extending to the outside of the cylindrical surface of the rotating disk (4) is fixedly connected to a pressing block (11); and the end of the movable rod (703) extending to the outside of the cylindrical surface of the rotating disk (4) is provided with an identification hole (7031) ), a bottom groove (704) is provided at the bottom of the groove body (702), a first spring (705) is arranged in the bottom groove (704), the movable rod (703) is elastically connected to the wall of the bottom groove (704) via the first spring (705), a positioning rod (709) is fixedly connected to the part of the movable rod (703) located in the groove body (702), a guide groove (710) is provided on the outer wall of the rotating shaft (701), the positioning rod (709) passes through the guide groove (710), and the positioning rod (709) is slidably connected to the guide groove (710), the arc-shaped bar seat (707) is fixedly connected to the inner wall of the protective cover (3), and a plurality of positioning grooves (708) for inserting the positioning rod (709) are provided on the inner side of the arc-shaped bar seat (707) along the length direction.

4. The image measuring instrument with adjustable positioning function as claimed in claim 3, characterized in that: A protective shell (8) is fixedly mounted on the back outer wall of the protective cover (3), and the opening and closing mechanism (14) is arranged in the protective shell (8); the opening and closing mechanism (14) comprises a transmission part, a locking part and a third gear (1419); a second rotating shaft (1416) is fixedly connected to the middle part of the third gear (1419), and the second rotating shaft (1416) is rotatably connected to the back outer wall of the protective cover (3); the top and bottom of the third gear (1419) are respectively meshed and connected with the second rack (1402) and the first rack (1401), a first slide groove (801) and a second slide groove (802) are provided at the bottom of the protective shell (8), the second rack (1402) is fixedly connected to a connecting rod (1420), a sliding portion (1421) is provided on the connecting rod (1420), the sliding portion (1421) is slidably connected to the second slide groove (802), the first slide groove (801) is slidably connected to a sliding block (1422), the connecting rod (1420) and the sliding block (1422) are respectively fixedly connected to the two protective covers (10).

5. The image measuring instrument with adjustable positioning function as claimed in claim 4, characterized in that: The transmission part comprises a pressure column (1403), a first connecting strip (1404) and a first rotating shaft (1408); the first rotating shaft (1408) is rotatably connected to the outer wall of the back side of the protective cover (3); a first pulley (1409) is fixedly sleeved on the first rotating shaft (1408); a second pulley (1417) is fixedly sleeved on the second rotating shaft (1416); a transmission belt (1418) is wound between the first pulley (1409) and the second pulley (1417); a second gear (1411) is also fixedly sleeved on the first rotating shaft (1408); the second gear (1411) is meshingly connected to a third rack (1405); the top end of the third rack (1405) is fixedly connected to A guide sleeve (1406), wherein the guide sleeve (1406) is loosely connected to a first guide column (1407), wherein the top end of the first guide column (1407) is fixedly connected to the top inner wall of the protective shell (8), wherein the third rack (1405) is fixedly connected to a first connecting strip (1404), wherein the first connecting strip (1404) is fixedly connected to a pressure column (1403), wherein the movable rod (703) extends into the interior of the protective shell (8), and wherein one end of the movable rod (703) located in the protective shell (8) is fixedly connected to a round cover (12), wherein the round cover (12) is coaxially arranged with the rotating shaft (701), wherein the pressure column (1403) is located in the round cover (12), and wherein the pressure column (1403) is in contact with the top inner wall of the round cover (12).

6. The image measuring instrument with adjustable positioning function as claimed in claim 5, characterized in that: The locking portion comprises a first gear (1410), a fourth rack (1412) and a second connecting strip (1413); the first gear (1410) is fixedly sleeved on the first rotating shaft (1408); the first gear (1410) is meshingly connected with the fourth rack (1412); the top end of the fourth rack (1412) is fixedly connected with the second connecting strip (1413); a guide hole is provided on the second connecting strip (1413); the guide hole is gap-fittingly connected with the second connecting strip (1413); A guide column (1414), the top end of the second guide column (1414) is fixedly connected to the top inner wall of the protective shell (8), a draw hook (17) is fixedly installed on the second connecting strip (1413), a push-type lock buckle (16) is arranged above the draw hook (17), and the push-type lock buckle (16) is fixedly installed on the top inner wall of the protective shell (8); a second spring (1415) is arranged between the top of the second connecting strip (1413) and the top inner wall of the protective shell (8).

7. The image measuring instrument with adjustable positioning function as claimed in claim 4, characterized in that: The lubrication portion comprises an annular groove (13) opened on the bottom edge of the protective cover (3), an oil storage cotton strip (1301) is arranged in the annular groove (13), and the annular groove (13) is connected to an oil supply mechanism (9).

8. The image measuring instrument with adjustable positioning function as claimed in claim 7, characterized in that: The oil supply mechanism (9) comprises an oil storage box (901) and an elastic bag (903); the oil storage box (901) is fixedly mounted on the outer side wall of the protective shell (8); the elastic bag (903) is fixedly mounted on the inner side wall of the protective shell (8); a first one-way valve (904) and a second one-way valve (906) are mounted on a side of the elastic bag (903) close to the oil storage box (901); the first one-way valve (904) is connected to the oil storage box (901) via an oil inlet pipe (905); the second one-way valve (906) is connected to an oil outlet pipe (907); the oil outlet pipe (907) is connected to the annular groove (13); a refueling port (902) is arranged on the top of the oil storage box (901); a sealing cover is mounted on the refueling port (902).

9. The image measuring instrument with adjustable positioning function as claimed in claim 8, characterized in that: The clean air-filling mechanism (6) comprises a fan (601); a lower cavity (602), an upper cavity (603) and a connecting port (604) are provided in the mounting seat (2); an air outlet of the fan (601) is connected to the top of the protective cover (3) through the lower cavity (602); an air inlet of the fan (601) is connected to the connecting port (604) through the upper cavity (603); and a filter (605) is installed on the connecting port (604).

10. The image measuring instrument with adjustable positioning function as claimed in claim 9, characterized in that: The fan (601) is electrically connected to a key switch (18), and the key switch (18) is located on one side of the elastic capsule (903). A push bar (15) is provided on the side of the key switch (18) and the elastic capsule (903), and the push bar (15) is fixedly connected to one end of the second rack (1402).

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