Image measuring instrument with adjustable positioning function

Abstract

The present invention provides an image measuring instrument with an adjustable positioning function, which relates to the field of photogrammetry; it includes a mounting seat arranged on the main body of the image measuring instrument; it also includes: 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 the bottom port of the protective cover is provided with two protective covers, 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; an angle adjustment mechanism, the angle adjustment mechanism is connected to the photographic lens to adjust the angle of the photographic lens for photographic measurement, and the angle adjustment mechanism is provided with a positioning part; a clean air-inflating mechanism, the clean air-inflating mechanism is arranged in the mounting seat, and the clean air-inflating mechanism is connected to the top port of the protective cover. The angle adjustment of the photographic lens and the positioning of the clean air-inflating mechanism after adjustment can be realized, so as to meet the multi-angle photographic measurement requirements of the object to be measured; at the same time, a dust-proof protection effect is provided for the photographic lens, and the cleanliness of the photographic lens is ensured.

Description

Technical Field

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

[0002] Image measuring instrument is a high-precision, high-tech measuring instrument widely used in machinery, electronics, instrumentation, hardware, plastics and other industries.

[0003] Image measuring instruments perform photogrammetry through their lenses. During use, the shooting angle is generally fixed, which cannot meet the requirements for shooting objects at different angles. Furthermore, the lens position lacks a protective design and is exposed to the external environment for a long time in both working and non-working states. Especially in some dusty areas, dust and dirt easily adhere to the lens, affecting photogrammetry. Summary of the Invention

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

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The present invention provides an image measuring instrument with an adjustable positioning function, comprising an image measuring instrument body and a mounting base arranged on the image measuring instrument body; further comprising: a protective cover, wherein a photographic lens is arranged inside the protective cover, the top port of the protective cover is fixedly connected to the mounting base, and the bottom port of the protective cover is provided with two protective covers, the top surface of the protective cover is fixedly laid with a sealing gasket, the two protective covers are connected with an opening and closing mechanism, and the opening and closing mechanism can enable the two protective covers to close the bottom port of the protective cover or open the bottom port of the protective cover; an angle adjustment mechanism, wherein the angle adjustment mechanism is connected to the photographic lens to adjust the angle of the photographic lens for photographing and measuring, and the angle adjustment mechanism is provided with a positioning part to provide positioning after the angle is adjusted; a lubrication part, wherein the lubrication part is arranged at the bottom port of the protective cover, and the lubrication part is used for lubricating the protective cover and the bottom port of the protective cover; a clean inflation mechanism, wherein the clean inflation mechanism is arranged in the mounting base, and the clean inflation mechanism is connected to the top port of the protective cover.

[0007] In this technical solution, the angle of the camera lens can be adjusted, and after adjustment, it can be positioned through the positioning part to meet the multi-angle camera measurement requirements of the object to be measured; at the same time, it provides dustproof protection for the camera lens and ensures the cleanliness of the camera lens.

[0008] Preferably, the angle adjustment mechanism includes a rotating shaft rotatably mounted 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 mounted on the front end of the rotating shaft.

[0009] In this technical solution, the angle adjustment mechanism is used to adjust the camera measurement angle of the camera lens.

[0010] The cam is provided with an L-shaped groove, and the cam is provided with a groove for sliding into the groove, and the groove is connected with the front end of the cam to the front end of the cam.

[0011] In this technical solution, the positioning part is used for positioning the camera lens after the angle is adjusted.

[0012] Preferably, a protective shell is fixedly installed on the back outer wall of the protective cover, and the opening and closing mechanism is arranged in the protective shell; the opening and closing mechanism includes a transmission part, a locking part and a third gear; the middle part of the third gear is fixedly connected to a second rotating shaft, 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 and connected with the second rack and the first rack, the bottom of the protective shell is provided with a first slide groove and a second slide groove, the second rack is fixed with a connecting rod, a sliding part is provided on the connecting rod, the sliding part is slidably connected to the second slide groove, the first slide groove is slidably connected to a sliding block, and the connecting rod and the sliding block are respectively fixed to the two protective covers.

[0013] 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.

[0014] The transmission unit is a first gear wheel, a second gear wheel, a third gear wheel, a fourth gear wheel, a fifth gear wheel, a fifth gear wheel and a fifth gear wheel. The transmission unit is a first gear wheel, a second gear wheel, a third gear wheel and a fifth gear wheel. The transmission unit is a first gear wheel, a second gear wheel, a third gear wheel and a fourth gear wheel.

[0015] In this technical solution, the transmission part drives the opening and closing mechanism to be driven by the movable rod, and the positioning part and the opening and closing mechanism are controlled by operating a single pressing block.

[0016] Preferably, the locking part includes a first gear, a fourth rack and a second connecting bar; 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 to the second connecting bar, a guide hole is provided on the second connecting bar, the guide hole is gap-fittedly connected to the second guide column, the top end of the second guide column is fixedly connected to the top inner wall of the protective shell, a pull hook is fixedly installed on the second connecting bar, a push-type lock buckle is provided above the pull hook, and the push-type lock buckle is fixedly installed on the top inner wall of the protective shell; a second spring is provided between the top of the second connecting bar and the top inner wall of the protective shell.

[0017] In the present technical solution, the locking portion is used to lock the opening and closing mechanism when the opening and closing mechanism keeps the bottom port of the protective cover in an open state.

[0018] Preferably, the lubrication portion includes an annular groove opened on the bottom edge of the protective cover, an oil storage cotton strip is provided in the annular groove, and the annular groove is connected to an oil supply mechanism.

[0019] In this technical solution, the lubricating portion is used to lubricate the sealing gasket on the protective cover.

[0020] Preferably, the oil supply mechanism includes an oil storage box and an elastic bag; the oil storage box is fixedly mounted on the outer side wall of the protective shell, and the elastic bag is fixedly mounted on the inner side wall of the protective shell, and a first one-way valve and a second one-way valve are installed on the side of the elastic bag close to the oil storage box, the first one-way valve is connected to the oil storage box through an oil inlet pipe, and the second one-way valve is connected to an oil outlet pipe, and the oil outlet pipe is connected to the annular groove, and a refueling port is provided on the top of the oil storage box, and a sealing cover is installed on the refueling port.

[0021] In this technical solution, the oil supply mechanism is used to provide lubricating oil to the lubrication part.

[0022] Preferably, the clean inflation mechanism includes a fan; a lower cavity, an upper cavity and a connecting port are provided in the mounting seat; the air outlet of the fan is connected to the top of the protective cover through the lower cavity, and the air inlet of the fan is connected to the connecting port through the upper cavity, and a filter is installed on the connecting port.

[0023] In this technical solution, in the working state, a clean air flow is introduced into the protective cover through the clean air filling mechanism, which prevents dust from entering the protective cover, thereby providing dust-proof protection for the camera lens.

[0024] Preferably, the blower is electrically connected to a key switch, and the key switch is located on one side of the elastic bag. A push bar is provided on the side of the key switch and the elastic bag, and the push bar is fixedly connected to one end of the second rack.

[0025] In this technical solution, the movement of the second rack drives the push bar to move, pressing the button switch and the elastic bag to achieve the operation of the fan and the oil supply mechanism.

[0026] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0027] The positive progress effect of the present invention is:

[0028] The above-mentioned image measuring instrument with adjustable positioning function adjusts the camera lens to different photographic angles by setting an angle adjustment mechanism, thereby meeting the needs of multi-angle measurement of the object to be measured; further, a protective cover, a protective lid and an opening and closing mechanism are provided. In the non-working state, the bottom end of the protective cover is sealed by the protective cover, so that the camera lens is located in a closed protective space, which plays a dust-proof role. In the working state, the opening and closing mechanism enables the protective cover to remove the obstruction of the bottom port of the protective cover, and at the same time, the clean inflation mechanism introduces clean airflow into the protective cover. Through the action of the airflow, dust is prevented from adhering to the camera lens in the working state, thereby providing better dust-proof protection for the camera lens; further, a sealing gasket is provided on the protective cover to improve the sealing effect of the protective cover on the bottom end of the protective cover, and a lubrication part is provided to provide lubrication and reduce the wear of the sealing gasket during the opening and closing of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0030] Figure 2 It is a schematic structural diagram of the interior of the mounting base and the protective cover of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the bottom of the protective cover of the present invention.

[0032] Figure 4 It is a schematic diagram of the structure inside the protective cover of the present invention.

[0033] Figure 5 For the present invention Figure 4 A is a schematic diagram of the enlarged structure.

[0034] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure in B.

[0035] Figure 7 For the present invention Figure 4 Schematic diagram of the structure enlarged by C in the middle.

[0036] Figure 8 It is a structural schematic diagram of the protective cover and protective shell of the present invention.

[0037] Figure 9 It is a schematic diagram of the structure of the interior of the protective shell of the present invention.

[0038] Figure 10 It is a structural schematic diagram of the opening and closing mechanism of the present invention.

[0039] Figure 11 It is a structural schematic diagram of the first chute and the second chute of the present invention.

[0040] Figure 12 For the present invention Figure 8 Schematic diagram of the structure magnified in D.

[0041] Figure 13 It is a structural schematic diagram of the oil supply mechanism of the present invention.

[0042] Description of Reference Numerals

[0043] 1. Image measuring instrument body; 2. Mounting base; 3. Protective cover; 4. Rotating disk; 5. Camera lens; 6. Cleaning and inflating mechanism; 601. Fan; 602. Lower cavity; 603. Upper cavity; 604. Connecting port; 605. Filter; 7. Angle adjustment mechanism; 701. Rotating axis; 702. Slot; 703. Movable rod; 7031. Marking hole; 704. Bottom slot; 705. First spring; 706, hole body; 707, arc-shaped bar seat; 708, positioning groove; 709, positioning rod; 710, guide groove; 8, protective housing; 801, first slide groove; 802, second slide groove; 9, oil supply mechanism; 901, oil storage box; 902, oil filling 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; 1 1. Pressing block; 12. Round cover; 13. Annular groove; 1301. Oil-storing cotton strip; 14. Opening and closing mechanism; 1401. First rack; 1402. Second rack; 1403. Pressure column; 1404. First connecting bar; 1405. Third rack; 1406. Guide sleeve; 1407. First guide column; 1408. First rotating shaft; 1409. First pulley; 1410. First gear; 1411. Second gear; 1412, fourth rack; 1413, second connecting strip; 1414, second guide column; 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, push-type lock; 17, pull hook; 18, push button switch. DETAILED DESCRIPTION

[0044] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0045] like Figures 1-13As shown, 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; further comprising: a protective cover 3, wherein a photographic lens 5 is provided inside the protective cover 3, a top port of the protective cover 3 is fixedly connected to the mounting base 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, which can enable the two protective covers 10 to close the bottom port of the protective cover 3 or open the bottom port of the protective cover 3; an angle adjustment mechanism 7, wherein the angle adjustment mechanism 7 is connected to the photographic lens 5 to adjust the angle of the photographic lens 5 for photographing and measuring, and the angle adjustment mechanism 7 is provided with a positioning portion to provide positioning after the angle is adjusted; a lubricating portion, wherein the lubricating portion is provided at the bottom port of the protective cover 3, and the lubricating portion is used to lubricate the protective cover 10 and the bottom port of the protective cover 3; and a cleaning and inflating mechanism 6, wherein the cleaning and inflating mechanism 6 is provided in the mounting base 2 and connected to the top port of the protective cover 3.

[0046] like Figure 2 、 Figure 4 、 Figure 5 as well as Figure 6 As shown, the angle adjustment mechanism 7 includes 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 the front end of the rotating shaft 701 is fixedly mounted with a rotating disk 4.

[0047] The positioning portion includes a movable rod 703 and an arc-shaped bar seat 707; a groove body 702 is opened inside the rotating shaft 701 along the length direction, and the rotating disk 4 is radially opened with a hole body 706 perpendicular to the groove body 702, 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 the 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 opened with an identification hole 703 1. A bottom groove 704 is provided at the bottom of the groove body 702, and a first spring 705 is provided 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. The part of the movable rod 703 located in the groove body 702 is fixedly connected with a positioning rod 709. 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.

[0048] When taking a video measurement of an object to be measured, the camera lens is initially in a vertical position, such as Figure 4 As shown, at the beginning, the video measurement in the vertical direction is performed. After the video measurement in the vertical direction is completed, the angle is adjusted for video measurement at other angle positions.

[0049] The angle adjustment is specifically as follows: by pressing the pressing block 11 downward, 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, and the movable rod 703 drives the positioning rod 709 to leave one of the positioning grooves 708, canceling the positioning, and at the same time compressing the first spring 705, and then maintaining the above-mentioned pressing state of the pressing block 11, the rotating disk 4 is rotated to rotate the rotating shaft 701, the camera lens and the structure inside the rotating shaft 701 rotate together, and the alignment of the positioning rod 709 with the different positioning grooves 708 on the arc bar seat 707 is adjusted. After adjusting to the required angle, the position of the rotating disk 4 is saved, and the pressing block 11 is released. The elastic force of the first spring 705 resets the movable rod 703, the positioning rod 709 and the pressing block 11, and the positioning rod 709 is inserted into the positioning groove 708 to provide positioning after the angle adjustment.

[0050] Through the above-mentioned angle adjustment, multi-angle camera measurement of the object to be measured can be performed.

[0051] In a specific implementation, the front outer wall of the protective cover 3 can be provided with an angle marking scale, and a pointer can be provided on the portion of the rotating shaft 701 located outside the protective cover 3. The pointer is aligned with the portion of the movable rod 703 located within the hole 706. As the rotating shaft 701 rotates, the pointer moves along the angle marking scale, indicating the angle of the camera lens adjustment. In a specific implementation, the angle between each pair of adjacent positioning slots 708 is 2°. By adjusting the pointer by 2° each time, the positioning rod 709 is aligned with a positioning slot 708 after each adjustment.

[0052] like Figure 4 as well as Figures 8-11As shown, a protective shell 8 is fixedly installed 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 includes a transmission part, a locking part and a third gear 1419; the middle part of the third gear 1419 is fixedly connected to a second rotating shaft 1416, and the second rotating shaft 1416 is rotatably connected to the back outer wall of the protective cover 3, and the top and bottom of the third gear 1419 are respectively engaged with the second rack 1402 and the first rack 1401, and the bottom of the protective shell 8 is provided with a first sliding groove 801 and a second sliding groove 802, and the second rack 1402 is fixed with a connecting rod 1420, and a sliding part 1421 is provided on the connecting rod 1420, and the sliding part 1421 is slidably connected to the second sliding groove 802, and the first sliding groove 801 is slidably connected to a sliding block 1422, and the connecting rod 1420 and the sliding block 1422 are respectively fixed to the two protective covers 10.

[0053] The transmission part includes a pressure column 1403, a first connecting bar 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 around the first pulley 1409 and the second pulley 1417, a second gear 1411 is also fixedly sleeved on the first rotating shaft 1408, and the second gear 1411 is meshedly connected to the third rack 1405, and the top of the third rack 1405 A guide sleeve 1406 is fixedly connected, and the guide sleeve 1406 is loosely connected to a first guide column 1407. The top of the first guide column 1407 is fixedly connected to the top inner wall of the protective shell 8. The third rack 1405 is fixedly connected to a first connecting bar 1404. The first connecting bar 1404 is fixedly connected to a pressure column 1403. The movable rod 703 extends to the interior of the protective shell 8, and one end of the movable rod 703 located in the protective shell 8 is fixedly connected to a round cover 12. The round cover 12 is coaxially arranged with the rotating shaft 701. The pressure column 1403 is located in the round cover 12, and the pressure column 1403 is in contact with the top inner wall of the round cover 12.

[0054] The locking part includes a first gear 1410, a fourth rack 1412 and a second connecting bar 1413; the first gear 1410 is fixedly sleeved on the first rotating shaft 1408, the first gear 1410 is meshed with the fourth rack 1412, the top of the fourth rack 1412 is fixedly connected with the second connecting bar 1413, the second connecting bar 1413 is provided with a guide hole, the guide hole is gap-fittedly connected with a second guide column 1414, the top of the second guide column 1414 is fixedly connected to the top inner wall of the protective shell 8, a pull hook 17 is fixedly installed on the second connecting bar 1413, a push-type lock buckle 16 is provided above the pull 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 provided between the top of the second connecting bar 1413 and the top inner wall of the protective shell 8.

[0055] Before taking a video measurement of the object to be measured, the protective cover 10 must be opened first. Specifically, before opening the protective cover 10, the camera lens is in a vertical state, and the pressing block 11 is pressed down to make the pressing block 11 fit 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 received in the hole 706. The movable rod 703 drives the circular cover 12 to move downward, and the circular cover 12 presses down the pressure column 1403. The pressure column 1403 drives the third rack 1405 to move downward through the first connecting bar 1404. Through the third rack 1405 and the second gear 1411 The engagement causes the first rotating shaft 1408 and the first gear 1410 and the first pulley 1409 on the first rotating shaft 1408 to rotate together, and the second pulley 1417 is rotated through the transmission belt 1418. The second pulley 1417 rotates the second rotating shaft 1416 and the third gear 1419. The third gear 1419 engages 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.

[0056] In the above, the first gear 1410 rotates, driving the fourth rack 1412 to move upward, and the second connecting bar 1413 moves upward together with the fourth rack 1412, providing guidance through the second guide column 1414 and the guide hole, while compressing the second spring 1415, and inserting the hook 17 into the push-type lock 16 to lock it and keep the protective cover 10 in the open state.

[0057] The pressing block 11 is released and reset by the elastic force of the first spring 705 .

[0058] In summary, the positioning portion of the angle adjustment mechanism 7 and the opening and closing mechanism 14 can be operated by a single pressing block 11, without the need to set up two operating structures, which provides convenience for overall use.

[0059] In the above-mentioned design of the locking part, the protective cover 10 can be kept in the open state, and the pressure column 1403 is kept in the position after being pressed down. Subsequently, during the 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 circular cover 12 moves a small distance. The circular cover 12 will not press down the pressure column 1403, that is, during the process of adjusting the angle of the camera lens, it will not affect the opening and closing mechanism 14.

[0060] After the video 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 column 1403, and the hook 17 presses the pressing lock 16 to unlock it, release the pressing block 11, and the elastic force of the second spring 1415 causes the opening and closing mechanism 14 to drive the protective cover 10 to reset; wait for the next video measurement.

[0061] 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 column 1403 and ensure that the protective cover 10 can be opened.

[0062] like Figure 11 As shown, the cross-sections of the first slide groove 801 and the second slide groove 802 are both cross-shaped, and the sliding block 1422 and the sliding part 1421 are adapted to the first slide groove 801 and the second slide groove 802, avoiding the problem of separation in the vertical direction, and can only slide along the length direction of the first slide groove 801 and the second slide groove 802.

[0063] like Figure 7 as well as Figure 13 As shown, the lubrication portion includes an annular groove 13 opened on the bottom edge of the protective cover 3, an oil-retaining cotton strip 1301 is arranged in the annular groove 13, and the annular groove 13 is connected to the oil supply mechanism 9. The oil supply mechanism 9 includes 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, and 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 installed on the 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 through an oil inlet pipe 905, and the second one-way valve 906 is connected to an oil outlet pipe 907, and the oil outlet pipe 907 is connected to the annular groove 13. A refueling port 902 is provided on the top of the oil storage box 901, and a sealing cap is installed on the refueling port 902.

[0064] When the protective cover 10 moves, the sealing gasket is wiped by the oil-retaining cotton strip 1301, and the oil therein is applied to the sealing gasket to provide lubrication.

[0065] The oil supply mechanism 9 provides oil to the annular groove 13. Specifically, each time the protective cover 10 is opened, the push bar 15 on the second rack 1402 approaches the elastic bag 903, and the push bar 15 compresses the elastic bag 903, squeezing out the oil in the elastic bag 903, and entering the annular groove 13 through the oil outlet pipe 907 of the second one-way valve 906 to replenish the oil storage cotton strip 1301. When the protective cover 10 is closed, the push bar 15 leaves the elastic bag 903, and the elastic bag 903 is reset, and the oil in the oil storage box 901 is sucked out through the first one-way valve 904 and the oil inlet pipe 905.

[0066] In the above, the lubrication of the sealing gasket is achieved, and oil is automatically provided to the lubrication part through the opening and closing process of the protective cover 10.

[0067] The elastic bag 903 may be made of rubber and be in the shape of a bellows with both ends closed. A coil spring may be provided inside for elastic reset.

[0068] like Figure 2 and Figure 12 As shown, the clean inflation mechanism 6 includes a fan 601; a lower cavity 602, an upper cavity 603 and a connecting port 604 are provided in the mounting base 2; the air outlet of the fan 601 is connected to the top of the protective cover 3 through the lower cavity 602, and the 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.

[0069] 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 .

[0070] During the process of opening the protective cover 10, the push strip 15 squeezes the elastic bag 903 and presses the button switch 18 at the same time, so that the fan 601 starts automatically. The external air is filtered by the filter 605, enters the fan 601 through the connecting port 604 and the upper cavity 603, and then enters the protective cover 3 through the lower cavity 602, thereby preventing external dust from entering.

[0071] During the closing process of the protective cover 10 , the push bar 15 is separated from the key switch 18 , and the fan 601 is automatically turned off.

[0072] The filter 605 is preferably an activated carbon filter.

[0073] The present invention is not limited to the above-described embodiments. Any changes in shape or structure fall within the scope of protection of the present invention. The scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention. Such changes and modifications shall fall within the scope of protection 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 base (2) arranged on the image measuring instrument body (1); characterized in that: Also includes: A protective cover (3), wherein a photographic lens (5) is provided inside the protective cover (3), a top port of the protective cover (3) is fixedly connected to the 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) is connected to the photographic lens (5) to adjust the angle of the photographic lens (5) for photographing and measuring, and the angle adjustment mechanism (7) is provided with a positioning portion to provide positioning after the angle is adjusted; A lubricating portion, the lubricating portion being arranged at the bottom port of the protective cover (3), and the lubricating 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 disposed in the mounting seat (2), and the clean air-inflating mechanism (6) is connected to a top port of the protective cover (3); The outer wall of the back side of the protective cover (3) is fixedly mounted with a protective shell (8), and the opening and closing mechanism (14) is arranged in the protective shell (8); the opening and closing mechanism (14) includes a transmission part, a locking part and a third gear (1419); the middle part of the third gear (1419) is fixedly connected with a second rotating shaft (1416), and the second rotating shaft (1416) is rotatably connected to the outer wall of the back side 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); the bottom of the protective shell (8) is provided with a first slide groove (801) and a second slide groove ( 802), the second rack (1402) is fixedly connected to a connecting rod (1420), the connecting rod (1420) is provided with a sliding portion (1421), 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 two protective covers (10); the lubricating portion includes an annular groove (13) opened on the bottom edge of the protective cover (3), an oil storage cotton strip (1301) is provided in the annular groove (13), and the annular groove (13) is connected to an oil supply mechanism (9).

2. The image measuring instrument with adjustable positioning function according to 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) being fixedly connected to the photographic lens (5), the front end of the rotating shaft (701) extending outside the protective cover (3), and a rotating disk (4) being fixedly mounted on the front end of the rotating shaft (701).

3. The image measuring instrument with adjustable positioning function according to claim 2, characterized in that: The positioning portion includes 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, and a hole body (706) perpendicular to the groove body (702) is provided in the radial direction of the rotating disk (4), 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 provided 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), the part of the movable rod (703) located in the groove body (702) is fixedly connected with a positioning rod (709), 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 according to claim 3, characterized in that: The transmission part includes a pressure column (1403), a first connecting bar (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 around 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 meshedly connected to a third rack (1405); the top end of the third rack (1405) is fixedly connected to The guide sleeve (1406) is loosely connected to a first guide column (1407), the top of the first guide column (1407) is fixedly connected to the top inner wall of the protective shell (8), the third rack (1405) is fixedly connected to a first connecting bar (1404), the first connecting bar (1404) is fixedly connected to a pressure column (1403), the movable rod (703) extends into the interior of the protective shell (8), and one end of the movable rod (703) located in the protective shell (8) is fixedly connected to a circular cover (12), the circular cover (12) is coaxially arranged with the rotating shaft (701), the pressure column (1403) is located in the circular cover (12), and the pressure column (1403) is in contact with the top inner wall of the circular cover (12).

5. The image measuring instrument with adjustable positioning function according to claim 4, characterized in that: 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 the first rotating shaft (1408), the first gear (1410) is meshedly connected with the fourth rack (1412), the top end of the fourth rack (1412) is fixedly connected with the second connecting bar (1413), a guide hole is opened on the second connecting bar (1413), and the guide hole is clearance-fittedly connected with the second connecting bar (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 provided 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 provided between the top of the second connecting strip (1413) and the top inner wall of the protective shell (8).

6. The image measuring instrument with adjustable positioning function according to claim 1, 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), and 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 provided on the top of the oil storage box (901); and a sealing cover is mounted on the refueling port (902).

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

8. The image measuring instrument with adjustable positioning function according to claim 7, 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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