Zero adjustment mechanism for complex optical path

Abstract

The invention discloses a complex light path zero position adjusting mechanism which comprises an upper reflector assembly, a lower reflector assembly, a steel belt mechanism and a shell, the upper reflector assembly, the lower reflector assembly and the steel belt mechanism are installed in the shell, the upper reflector assembly is installed on the upper portion in the shell through the steel belt mechanism, and the lower reflector assembly is installed on the lower portion in the shell through the steel belt mechanism. The lower reflective mirror assembly is located on the lower portion in the shell, and the upper reflective mirror assembly and the lower reflective mirror assembly enable the alignment light path, the laser emitting light path, the laser receiving light path and other light paths to form a common aperture. By rotating the screw rod of the lower reflector assembly, the function of left-right adjustment of the zero position of the complex light path is achieved, by rotating the wheel shaft of the steel belt mechanism, the function of up-down adjustment of the zero position of the complex light path is achieved, and therefore zero position adjustment of the alignment system is completed.

Description

Technical Field

[0001] The invention relates to a complex optical path zero position adjustment mechanism, in particular to an adjustment mechanism which is applied to a common aperture multi-optical path alignment system with a reflector and can make multiple optical paths deflect synchronously when performing optical axis zero position adjustment. Background Art

[0002] After the alignment system is installed on the equipment, it needs to be zero-calibrated so that the optical axis of the alignment system forms a specific relationship with a certain reference of the equipment. There are two types of existing calibration methods: 1. The entire alignment system is driven to rotate or move by an external mechanical structure to achieve zero position adjustment. However, such an external mechanical structure is complex and large in size, which not only increases the weight of the equipment but also reduces the reliability of the equipment. 2. The method of moving the optical axis of the alignment system is used to achieve zero-position adjustment. Since the mechanism of moving the optical axis is arranged inside the alignment system, it has the characteristics of small size, light weight, and compact structure. Therefore, the method of moving the optical axis is currently a common method for zero-position adjustment of the alignment system. Specifically, this method is achieved by moving the reticle of the alignment system. Although this method is intuitive, convenient, and has a large amount of adjustment, it is only applicable to alignment systems with simple optical paths. For high-tech alignment systems with complex optical paths, the method of moving the reticle of the alignment system will not meet the design requirements. For example, for a complex optical path with laser ranging, the laser emission optical axis and the laser receiving optical axis must be parallel to the alignment optical axis, so that the system can measure the distance to any target it is aligned with. If a moving reticle is used to achieve zero-position adjustment of the alignment optical axis, when the alignment optical axis of the alignment optical path is deflected, since the moving reticle does not involve the laser emission optical path and the laser receiving optical path, the laser emission optical axis and the laser receiving optical axis fail to deflect synchronously with the alignment optical axis, resulting in the laser emission optical axis and the laser receiving optical axis no longer being parallel to the alignment optical axis. If laser ranging is performed at this time, the laser ranging target and the alignment target will be inconsistent, which reduces the operational response efficiency of the equipment.

[0003] Therefore, a new zero position adjustment mechanism is needed so that when the alignment optical axis is deflected, the laser emission optical axis and the laser receiving optical axis are deflected synchronously to ensure that the relative position relationship between the alignment optical path, the laser emission optical path, and the laser receiving optical path always remains consistent. Summary of the invention

[0004] In order to ensure that the relative positions of the laser emission optical axis, the laser receiving optical axis and the alignment optical path optical axis remain consistent during zero position adjustment, the present invention proposes a complex optical path zero position adjustment mechanism.

[0005] The present invention is achieved through the following technical scheme: a complex optical path zero-position adjustment mechanism, including an upper reflector assembly, a lower reflector assembly, a steel belt mechanism, and a shell. The upper reflector assembly, the lower reflector assembly, and the steel belt mechanism are installed inside the shell. The upper reflector assembly is installed in the upper part of the shell through the steel belt mechanism, and the lower reflector assembly is located in the lower part of the shell. The upper reflector assembly and the lower reflector assembly form a common aperture for multiple optical paths such as an alignment optical path, a laser emission optical path, and a laser receiving optical path.

[0006] Furthermore, the lower reflector assembly includes a lower reflector, a lower reflector seat, a flexible side panel, a base, a tension spring, and a spiral mechanism. The base is installed on the shell, and the lower reflector is installed on the lower reflector seat. One side of the lower reflector seat is connected to the base through a flexible side panel, and a tension spring is arranged between the other side of the lower reflector seat and the base, and the base is provided with a spiral mechanism near the end of the tension spring.

[0007] Furthermore, the spiral mechanism includes a spiral mounting seat, a screw, a push rod, a bearing, a bearing pressure ring, and a limiter. The spiral mounting seat is fixed to the bottom of the base, and the screw is installed in the spiral mounting seat through the bearing and the bearing pressure ring. A groove is provided at the bottom end of the screw and passes through the bottom of the shell. Tools such as a slotted screw driver can be used to insert into the groove of the screw and rotate the screw; the upper side of the screw is a thread, and the push rod is installed on the upper side of the screw through threaded cooperation, and the push rod is located on the lower side of the lower reflector seat.

[0008] Furthermore, a plane is arranged on the outer cylindrical surface of the push rod, and the limiter is pressed against the plane of the outer cylindrical surface of the push rod to limit the rotation of the push rod so that the push rod can only move up and down.

[0009] Furthermore, the steel belt mechanism includes a riveted steel belt, an axle, a support, gear one, and gear two. The support is installed on the upper part of the shell through a mounting shaft, and the support can rotate around the axis of the mounting shaft. Gear one and gear two are installed on the top of the support. Gear one and gear two are both fan-shaped gears, and gear one is meshed with gear two. The two ends of the riveted steel belt are respectively fixed on gear one and gear two after passing through the cam of the axle. The axle is installed on the lower part of the shell through the shafts on both sides of its cam. The axle can rotate around its axis, and a handwheel is provided at the end of the axle that passes through the outside of the shell.

[0010] Furthermore, the steel belt mechanism also includes a lever, a compression spring, an adjustment screw, and a support rod. The upper end of the lever is installed on the outside of gear 2, the lower end of the lever is located on one side of the lower end of the support, and the other side of the lower end of the support is installed with an adjustment screw. One end of the support rod is inserted into the hole of the adjustment screw, and the guide rod at the other end of the support rod is inserted into the small hole at the lower end of the lever. The compression spring is sleeved in the middle of the support rod. After installation, the support rod is pushed outward by the force of the compression spring. Since the upper end of the lever is fixed to gear 2, the lever drives gear 2 to rotate counterclockwise, and gear 1 meshing with gear 2 rotates synchronously in the opposite direction, thereby pulling the two ends of the riveted steel belt inward to avoid loose steel belts and empty return.

[0011] Furthermore, a pressure plate is installed between the middle portion of the riveted steel strip and the cam of the wheel axle to prevent the riveted steel strip from detaching from the cam of the wheel axle.

[0012] Furthermore, the upper reflector assembly includes an upper reflector and an upper reflector seat, the upper reflector is mounted on the upper reflector seat, the upper reflector seat is provided with a threaded hole, and a screw passes through the threaded hole to fix the upper reflector seat to the support of the steel belt mechanism.

[0013] Furthermore, the diameter of the support is twice the diameter of the cam.

[0014] Furthermore, a protective glass is installed on the shell, and the protective glass is located in front of the upper reflector. This design is helpful for sealing and protecting the equipment.

[0015] Compared with the prior art, the advantages of the present invention are: 1. Compact structure and small space occupation.

[0016] 2. Whether the optical axis is adjusted up and down by rotating the wheel shaft or left and right by rotating the screw of the spiral mechanism, the relative position relationship between the laser emission optical axis, the laser receiving optical axis and the alignment optical path optical axis always remains consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a complex optical path; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the appearance structure of the present invention; Figure 4 It is a schematic diagram of the installation of the present invention and the equipment; Figure 5 is an exploded view of the upper reflector assembly; Figure 6 is a schematic diagram of the structure of the upper reflector assembly; Figure 7is an exploded view of the lower reflector assembly; Figure 8 is a schematic diagram of the structure of the lower reflector assembly; Fig. 9 It is an exploded view of the steel belt mechanism; Fig.10 It is a structural diagram of the steel belt mechanism; Fig.11 It is a schematic diagram of the meshing of gear 1 and gear 2; Fig.12 It is a schematic diagram of the connection between the upper reflector assembly and the steel belt mechanism.

[0018] In the figure: 1, upper reflector assembly, 11, upper reflector, 12, upper reflector seat, 121, threaded hole, 2, lower reflector assembly, 21, lower reflector, 22, lower reflector seat, 23, flexible side plate, 24, base, 25, tension spring, 26, spiral mechanism, 261, spiral mounting seat, 262, screw, 263, push rod, 264, bearing, 265, bearing pressure ring, 266, limiter, 3, steel belt mechanism, 31, riveted steel belt, 32, axle, 321, cam, 33, support, 331, mounting shaft, 34, gear one, 35, gear two, 36, lever, 37, compression spring, 38, adjustment screw, 39, support rod, 310, pressure plate, 4, housing, 5, hand wheel, 6, protective glass. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-12 As shown, a complex optical path zero-position adjustment mechanism of the present embodiment includes an upper reflector assembly 1, a lower reflector assembly 2, a steel belt mechanism 3, and a shell 4. The upper reflector assembly 1, the lower reflector assembly 2, and the steel belt mechanism 3 are installed inside the shell 4. The upper reflector assembly 1 is installed in the upper inner part of the shell 4 through the steel belt mechanism 3, and the lower reflector assembly 2 is located in the lower inner part of the shell 4. The upper reflector 11 and the lower reflector 21 in the upper reflector assembly 1 and the lower reflector assembly 2 are of sufficient size and can include multiple optical paths such as an alignment optical path, a laser emission optical path, and a laser receiving optical path, so that the alignment optical path, the laser emission optical path, the laser receiving optical path, and the other optical paths form a common aperture through the upper reflector 11 and the lower reflector 21. When adjusting the positions of the upper reflector 11 and the lower reflector 21, the alignment optical path, laser emission optical path, laser receiving optical path and other optical paths are synchronously deflected, so that when adjusting the alignment optical axis to zero, the relative positions of the laser emission optical path, the laser receiving optical path and the alignment optical path are always kept consistent.

[0021] like Figure 7 , 8As shown, the lower reflector assembly 2 includes a lower reflector 21, a lower reflector seat 22, a flexible side plate 23, a base 24, a tension spring 25, and a spiral mechanism 26. The base 24 is mounted on the housing 4, the lower reflector 21 is mounted on the lower reflector seat 22, one side of the lower reflector seat 22 is connected to the base 24 through the flexible side plate 23, a tension spring 25 is arranged between the other side of the lower reflector seat 22 and the base 24, and a spiral mechanism 26 is arranged on the base 24 near the end of the tension spring 25; The screw mechanism 26 includes a screw mounting seat 261, a screw rod 262, a push rod 263, a bearing 264, a bearing pressure ring 265, and a stopper 266. The screw mounting seat 261 is fixed to the bottom of the base 24, and the screw rod 262 is installed in the screw mounting seat 261 through the bearing 264 and the bearing pressure ring 265. The bottom end of the screw rod 262 is provided with a groove and passes through the bottom of the housing 4. A tool such as a slotted screw driver can be used to put it into the groove of the screw rod 262 to rotate the screw rod 262; the upper side of the screw rod 262 is threaded, and the push rod 263 is installed on the upper side of the screw rod 262 through threaded matching, and the push rod 263 is located at the lower side of the lower reflector seat 22; A plane is provided on the outer cylindrical surface of the push rod 263, and the stopper 266 is pressed against the plane of the outer cylindrical surface of the push rod 263 to limit the rotation of the push rod 263 so that the push rod 263 can only move up and down; Rotate the screw rod 262 clockwise, the screw rod 262 drives the push rod 263 to move upward, and under the upward push of the push rod 263, the tension spring end of the lower reflector seat 22 overcomes the tension of the tension spring 25 and moves upward, thereby realizing the displacement of the optical axis to the right; rotate the screw rod 262 counterclockwise, so that the push rod 263 moves downward, and under the rebound tension of the tension spring 25, the tension spring end of the lower reflector seat 22 moves downward, thereby realizing the displacement of the optical axis to the left, that is, by rotating the screw rod 262 of the screw mechanism 26 by tools such as a slotted screw driver, the function of adjusting the zero position of the optical axis of a complex optical path to the left and right can be realized.

[0022] like Fig. 9 , 10 As shown in FIGS. 11 and 12, the steel belt mechanism 3 includes a riveted steel belt 31, a wheel shaft 32, a support 33, a gear 1 34, and a gear 2 35. The support 33 is installed on the upper part of the housing 4 through the mounting shaft 331, and the support 33 can rotate around the axis of the mounting shaft 331. The gear 1 34 and the gear 2 35 are installed on the top of the support 33. The gear 1 34 and the gear 2 35 are both fan-shaped gears, and the gear 1 34 is meshed with the gear 2 35; the two ends of the riveted steel belt 31 are respectively fixed on the gear 1 34 and the gear 2 35 after passing through the cam 321 of the wheel shaft 32, and a pressure plate 310 is installed between the middle part of the riveted steel belt 31 and the cam 321 of the wheel shaft 32 to prevent the riveted steel belt 31 from detaching from the cam 321 of the wheel shaft 32. The wheel shaft 32 is installed on the lower part of the housing 4 through the shafts on both sides of its cam 321. The wheel shaft 32 can rotate around its axis, and a hand wheel 5 is provided at one end of the wheel shaft 32 that passes through the outside of the housing 4; The steel belt mechanism 3 also includes a lever 36, a compression spring 37, an adjustment screw 38, and a support rod 39. The upper end of the lever 36 is installed on the outside of the gear 2 35, and the lower end of the lever 36 is located on one side of the lower end of the support 33. The adjustment screw 38 is installed on the other side of the lower end of the support 33. One end of the support rod 39 is inserted into the hole of the adjustment screw 38, and the guide rod at the other end of the support rod 39 is inserted into the small hole at the lower end of the lever 36. The compression spring 37 is sleeved in the middle of the support rod 39. After being installed in place, the support rod 39 is designed to push the lower end of the lever 36 outward by the force of the compression spring 37. Since the upper end of the lever 36 is fixed to the gear 2 35, the lever 36 drives the gear 2 35 to rotate counterclockwise, and the gear 1 34 meshing with the gear 2 35 rotates synchronously in the opposite direction, thereby pulling the two ends of the riveted steel belt 31 inward to avoid the looseness of the steel belt and causing empty return. By turning the hand wheel 5, the hand wheel 5 drives the wheel shaft 32 to rotate, the wheel shaft 32 drives the riveted steel belt 31 to rotate, and the riveted steel belt 31 drives the support 33 to rotate, so that the upper reflector assembly 1 installed on the support 33 rotates accordingly, so that the optical axis reflected by the upper reflector 11 moves on the plumb plane, that is, by rotating the hand wheel 5 connected to the wheel shaft 32, the function of adjusting the zero position of the optical axis of the complex optical path up and down can be realized.

[0023] like Figure 4 , 5 As shown in FIGS. 12 , the upper reflector assembly 1 includes an upper reflector 11 and an upper reflector seat 12 . The upper reflector 11 is mounted on the upper reflector seat 12 . The upper reflector seat 12 is provided with a threaded hole 121 . The screw passes through the threaded hole 121 to fix the upper reflector seat 12 on the support 33 of the steel belt mechanism 3 . And the diameter of the support 33 is twice the diameter of the cam 321. This design ensures that when the wheel shaft 32 rotates by an angle β, the support 33 rotates in the same direction by β / 2, and the upper reflector 11 rotates in the same direction by β / 2 accordingly, and the optical axis reflected by the upper reflector 11 rotates in the same direction by an angle β (mirror reflection, the normal is perpendicular to the mirror surface, the outgoing light and the incident light are symmetrically distributed on both sides of the normal. When the mirror surface rotates by θ, while the light on one side of the normal remains unchanged, the light on the other side of the normal rotates by 2θ relative to the original position), thereby ensuring that the rotation angle of the optical axis reflected by the upper reflector 11 remains equal to the rotation angle of the wheel shaft 32, which helps to synchronously transmit the rotation angle of the external mechanism to the alignment optical axis.

[0024] like Figure 2 , 3 As shown, a protective glass 6 is installed on the housing 4, and the protective glass 6 is located in front of the upper reflector 11. This design is helpful for sealing and protecting the device.

[0025] Working principle: By rotating the hand wheel 5 connected to the wheel shaft 32, the support 33 can be driven to rotate through the riveted steel belt 31, so that the upper reflector assembly 1 installed on the support 33 rotates accordingly, and the optical axis reflected by the upper reflector 11 moves on the plumb plane, thereby realizing the function of adjusting the optical axis zero position up and down; When the screw rod 262 is rotated, the push rod 263 is restricted by the stopper 266 to move up and down. When the push rod 263 moves upward, the tension spring end of the lower reflector seat 22 also moves upward under the push of the push rod 263; when the push rod 263 moves downward, the tension spring end of the lower reflector seat 22 moves downward due to the action of the tension spring 25. That is, when the screw rod 262 is rotated, the lower reflector seat 22 deflects in the horizontal direction, the lower reflector 21 deflects accordingly, and the optical axis reflected by the lower reflector 21 also deflects left and right accordingly, thereby realizing the function of adjusting the optical axis zero position left and right.

[0026] The above contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A complex optical path zero position adjustment mechanism, characterized in that: The invention comprises an upper reflector assembly (1), a lower reflector assembly (2), a steel belt mechanism (3), and a shell (4); the upper reflector assembly (1), the lower reflector assembly (2), and the steel belt mechanism (3) are installed inside the shell (4); the upper reflector assembly (1) is installed at the upper part of the shell (4) through the steel belt mechanism (3); the lower reflector assembly (2) is located at the lower part of the shell (4); and the upper reflector assembly (1) and the lower reflector assembly (2) form a common aperture for an alignment optical path, a laser emission optical path, and a laser reception optical path.

2. The complex optical path zero position adjustment mechanism according to claim 1, characterized in that: The lower reflector assembly (2) comprises a lower reflector (21), a lower reflector seat (22), a flexible side plate (23), a base (24), a tension spring (25), and a spiral mechanism (26); the base (24) is mounted on a housing (4); the lower reflector (21) is mounted on the lower reflector seat (22); one side of the lower reflector seat (22) is connected to the base (24) via the flexible side plate (23); a tension spring (25) is provided between the other side of the lower reflector seat (22) and the base (24); and the base (24) is provided with a spiral mechanism (26) near the end of the tension spring (25).

3. The complex optical path zero position adjustment mechanism as claimed in claim 2, characterized in that: The screw mechanism (26) comprises a screw mounting seat (261), a screw rod (262), a push rod (263), a bearing (264), a bearing pressure ring (265), and a stopper (266); the screw mounting seat (261) is fixed to the bottom of the base (24); the screw rod (262) is mounted in the screw mounting seat (261) via the bearing (264) and the bearing pressure ring (265); a groove is provided at the bottom end of the screw rod (262) and passes through the bottom of the housing (4); the upper side of the screw rod (262) is threaded; the push rod (263) is mounted on the upper side of the screw rod (262) via threaded engagement; and the push rod (263) is located at the lower side of the lower reflector seat (22).

4. The complex optical path zero position adjustment mechanism as claimed in claim 3, characterized in that: A plane is provided on the outer cylindrical surface of the push rod (263), and the stopper (266) is pressed against the plane of the outer cylindrical surface of the push rod (263).

5. The complex optical path zero position adjustment mechanism according to claim 1 or 4, characterized in that: The steel belt mechanism (3) comprises a riveted steel belt (31), a wheel shaft (32), a support (33), a first gear (34), and a second gear (35). The support (33) is mounted on the upper part of the housing (4) via a mounting shaft (331), and the support (33) can rotate around the axis of the mounting shaft (331). The first gear (34) and the second gear (35) are mounted on the top of the support (33). The first gear (34) and the second gear (35) are both fan-shaped gears, and the first gear (34) is meshed with the second gear (35). The two ends of the riveted steel belt (31) are respectively fixed on the first gear (34) and the second gear (35) after passing through the cam (321) of the wheel shaft (32). The wheel shaft (32) is mounted on the lower part of the housing (4) via the shafts on both sides of the cam (321). The wheel shaft (32) can rotate around its axis. A hand wheel (5) is provided at one end of the wheel shaft (32) that passes out of the housing (4).

6. The complex optical path zero position adjustment mechanism as claimed in claim 5, characterized in that: The steel belt mechanism (3) further comprises a lever (36), a compression spring (37), an adjustment screw (38), and a support rod (39). The upper end of the lever (36) is mounted on the outside of the second gear (35), the lower end of the lever (36) is located on one side of the lower end of the support (33), the other side of the lower end of the support (33) is mounted with an adjustment screw (38), one end of the support rod (39) is inserted into the hole of the adjustment screw (38), the guide rod at the other end of the support rod (39) is inserted into the small hole at the lower end of the lever (36), and the compression spring (37) is sleeved on the middle part of the support rod (39).

7. The complex optical path zero position adjustment mechanism according to claim 6, characterized in that: A pressure plate (310) is installed between the middle portion of the riveted steel strip (31) and the cam (321) of the wheel axle (32).

8. The complex optical path zero position adjustment mechanism according to claim 7, characterized in that: The upper reflector assembly (1) comprises an upper reflector (11) and an upper reflector seat (12); the upper reflector (11) is mounted on the upper reflector seat (12); the upper reflector seat (12) is provided with a threaded hole (121); a screw passes through the threaded hole (121) to fix the upper reflector seat (12) to a support (33) of the steel belt mechanism (3).

9. The complex optical path zero position adjustment mechanism according to claim 7, characterized in that: The diameter of the support (33) is twice the diameter of the cam (321).

10. The complex optical path zero position adjustment mechanism according to claim 1, characterized in that: A protective glass (6) is installed on the housing (4), and the protective glass (6) is located in front of the upper reflector (11).

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