Direct-drive high-precision multi-grating tower structure

Abstract

The utility model provides a direct-drive high-precision multi-grating tower structure, and belongs to the technical field of optical spectrum instruments. The direct-drive high-precision multi-grating tower structure comprises a shell; the direct drive motor is arranged on the inner wall of the bottom end of the shell; the supporting seat is connected to the output end of the direct drive motor; the cone pulley is detachably arranged at the top end of the supporting seat; the grating connecting plate is detachably mounted on the circumferential outer wall of the cone pulley, and a grating lens is mounted on the grating connecting plate; wherein the grating connecting plate is provided with an adjusting assembly, and the adjusting assembly is used for adjusting the angle of the grating lens. The direct-drive high-precision multi-grating tower structure is low in assembly difficulty and good in stability, the positioning precision is improved, and the angles of the grating lenses are flexible and convenient to adjust.

Description

A direct-drive high-precision multi-grating tower structure Technical Field

[0001] This disclosure relates to the field of spectroscopic instrument technology, and in particular to a direct-drive high-precision multi-grating tower structure. Background Technology

[0002] In the field of spectrometer design and manufacturing, traditional grating tower drive structures generally use a stepper motor combined with a worm gear transmission to adjust the grating position. For example, the "three-grating multi-directional attitude adjustment tower" disclosed in patent CN113985554A is based on this type of technical solution.

[0003] However, worm gear transmission mechanisms occupy a large space and require the use of components such as angular contact ball bearings and radial bearings. The numerous connecting parts and complex assembly process result in a large cumulative error in the mechanical transmission chain. Furthermore, the height of the tower wheel structure makes it difficult to ensure concentricity, which further amplifies the optical path alignment error and affects the resolution of the spectrometer.

[0004] To address the above issues, a direct-drive high-precision multi-grating tower structure was designed. Summary of the Invention

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a direct-drive high-precision multi-grating tower structure that reduces assembly difficulty and improves positioning accuracy.

[0006] To achieve the aforementioned objectives of this utility model, the present disclosure adopts the following technical solution:

[0007] A direct-drive high-precision multi-grating tower structure includes:

[0008] case;

[0009] A direct-drive motor is located on the inner wall of the bottom end of the housing.

[0010] A support base is connected to the output end of the direct drive motor;

[0011] The tower wheel is detachably mounted on the top of the support base;

[0012] A grating connecting plate is detachably installed on the outer circumferential wall of the tower wheel, and a grating lens is installed on the grating connecting plate;

[0013] The grating connecting plate is provided with an adjustment component, which is used to adjust the angle of the grating lens.

[0014] In one exemplary embodiment of this disclosure, the top end of the grating connecting plate is connected to the tower wheel by a first bolt, and the bottom end of the grating connecting plate is connected to the tower wheel by a second bolt, wherein the first bolt is located at the middle of the top end of the grating connecting plate.

[0015] In one exemplary embodiment of this disclosure, the grating connecting plate is provided with a through hole and a through groove communicating with the through hole, the through hole and the through groove being located on the upper part of the grating connecting plate;

[0016] The grating connecting plate above the through slot is the first support plate, and the grating connecting plate below the through slot is the second support plate. The grating lens is mounted on the first support plate.

[0017] In one exemplary embodiment of this disclosure, the adjustment component includes:

[0018] The first adjusting bolt is located on both sides of the first bolt. One end of the first adjusting bolt passes through the grating connecting plate and abuts against the tower wheel. The first adjusting bolt is threadedly connected to the grating connecting plate.

[0019] In one exemplary embodiment of this disclosure, the adjustment component includes:

[0020] The second adjusting bolt is located on the side of the first bolt away from the through hole;

[0021] A guide hole is formed at the top of the grating connecting plate, and the guide hole communicates with the through slot;

[0022] A threaded hole is formed at the top of the second support plate, and the threaded hole is coaxially arranged with the guide hole;

[0023] One end of the second adjusting bolt passes through the guide hole and is threadedly connected to the threaded hole.

[0024] In one exemplary embodiment of this disclosure, the adjustment component includes:

[0025] The third adjusting bolt is located on the side of the first bolt away from the through hole;

[0026] One end of the third adjusting bolt passes through the first support plate and extends into the through groove. The third adjusting bolt is threadedly connected to the first support plate.

[0027] In one exemplary embodiment of this disclosure, the distance between the side wall of the first support plate away from the tower wheel and the tower wheel is greater than the distance between the side wall of the second support plate away from the tower wheel and the tower wheel.

[0028] In one exemplary embodiment of this disclosure, the support base and the tower wheel are connected by a pin and a third bolt.

[0029] In one exemplary embodiment of this disclosure, a driver is provided on the housing, and the direct drive motor is electrically connected to the control system through the driver.

[0030] In one exemplary embodiment of this disclosure, a light shield is detachably provided on the grating connecting plate, the light shield being used to protect the grating lens.

[0031] The beneficial effects of this disclosure are:

[0032] (1) This disclosure directly drives the tower wheel to rotate by a direct drive motor. The direct drive motor has a resolution of up to 1,440,000 pulses / revolution, avoiding the cumulative error of traditional worm gear transmission. The tower wheel and support seat are precisely positioned by pins and bolts, improving the concentricity of the upper and lower parts, improving the structural stability and positioning accuracy, and improving the resolution of the spectrometer.

[0033] (2) This disclosure eliminates complex transmission components such as worm gears and stepper motors, simplifies the mechanism, reduces the number of parts by more than 50%, significantly reduces the assembly difficulty, and occupies only 1 / 3 to 2 / 3 of the area of ​​the traditional structure.

[0034] (3) In this disclosure, the pitch angle and horizontal deflection of the grating lens are finely adjusted by multiple sets of adjusting bolts, which has high adjustment accuracy and is convenient to adjust.

[0035] (4) The direct drive motor in this disclosure has no carbon brush wear, has a long service life and is maintenance-free, reducing long-term use costs; the simplified structure reduces the complexity of processing and assembly, and improves production efficiency. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0037] Figure 1 is a schematic diagram of the direct-drive high-precision multi-grating tower structure in one embodiment of this disclosure;

[0038] Figure 2 is a top view of a direct-drive high-precision multi-grating tower structure in one embodiment of this disclosure;

[0039] Figure 3 is a schematic diagram of the structure of the grating connecting plate in one embodiment of the present disclosure;

[0040] Figure 4 is a cross-sectional view of the grating connecting plate in one embodiment of this disclosure;

[0041] Figure 5 is a side view of the grating connecting plate in one embodiment of this disclosure;

[0042] Figure 6 is a schematic diagram of the direct-drive high-precision multi-grating tower structure in another embodiment of this disclosure.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Housing; 2. Direct drive motor; 3. Support base; 4. Tower wheel; 5. Grating connecting plate; 6. First bolt; 7. Second bolt; 8. Through hole; 9. Through groove; 10. First adjusting bolt; 11. Second adjusting bolt; 12. Guide hole; 13. Threaded hole; 14. Third adjusting bolt; 15. Pin; 16. Third bolt; 17. Driver; 18. Sunshade. Detailed Implementation

[0045] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0046] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0047] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0048] This disclosure provides a direct-drive high-precision multi-grating tower structure, as shown in Figures 1 and 2, comprising: a housing 1; a direct-drive motor 2 disposed on the inner wall of the bottom end of the housing 1; a support base 3 connected to the output end of the direct-drive motor 2; a tower wheel 4 detachably disposed on the top end of the support base 3; and a grating connecting plate 5 detachably mounted on the outer circumferential wall of the tower wheel 4, wherein a grating lens is mounted on the grating connecting plate 5; wherein an adjustment component is provided on the grating connecting plate 5 for adjusting the angle of the grating lens.

[0049] In this embodiment, the direct-drive high-precision multi-grating tower structure comprises a housing 1, a direct-drive motor 2, a support base 3, a tower wheel 4, a grating connecting plate 5, and an adjustment assembly. The direct-drive motor 2 is mounted on the bottom wall of the housing 1. The support base 3 is detachably mounted on the output end of the direct-drive motor 2. The tower wheel 4 is detachably mounted on the top of the support base 3. The grating connecting plate 5 is detachably mounted on the circumferential outer wall of the tower wheel 4. A grating lens is mounted on the grating connecting plate 5. The adjustment assembly is mounted on the grating connecting plate 5. The direct-drive motor 2 drives the tower wheel 4 and the grating connecting plate 5 and the grating lens to rotate. The adjustment assembly adjusts the state of the grating connecting plate 5, thereby adjusting the angle of the grating lens.

[0050] Compared to existing worm gear transmission mechanisms, this direct-drive high-precision multi-grating tower structure directly drives the tower wheel to rotate via a direct-drive motor, avoiding the accumulated errors of traditional worm gear transmissions, improving structural stability and positioning accuracy, and enhancing spectrometer resolution. It eliminates complex transmission components such as worm gears and stepper motors, simplifying the mechanism and reducing the number of parts by more than 50%, significantly reducing assembly difficulty. The overall footprint is only 1 / 3 to 2 / 3 of that of traditional structures. Fine-tuning of the grating lenses is achieved through multiple sets of adjusting bolts, offering high precision and convenient adjustment. The direct-drive motor has no carbon brush wear, a long lifespan, and requires no maintenance, reducing long-term operating costs. The simplified structure reduces the complexity of processing and assembly, improving production efficiency.

[0051] In one embodiment of this disclosure, the direct drive motor 2 is fixedly mounted on the inner wall of the bottom end of the housing 1 by bolts and pins, and the support base 3 is fixed to the output shaft of the direct drive motor 2 by bolts.

[0052] In one embodiment of this disclosure, referring to Figure 1, the top end of the grating connecting plate 5 is connected to the tower wheel 4 via a first bolt 6, and the bottom end of the grating connecting plate 5 is connected to the tower wheel 4 via a second bolt 7. The first bolt 6 is located at the middle of the top end of the grating connecting plate 5. In this way, the grating connecting plate 5 can be quickly assembled and disassembled.

[0053] Optionally, there are two second bolts 7, which are symmetrically installed on both sides of the bottom end of the grating connecting plate 5.

[0054] Optionally, the first bolt 6 passes through the grating connecting plate 5 and is threadedly connected to the tower wheel 4, and the grating connecting plate 5 can reciprocate on the first bolt 6.

[0055] In one embodiment of this disclosure, referring to Figures 3 and 4, a through hole 8 and a through groove 9 communicating with the through hole 8 are provided on the grating connecting plate 5. The through hole 8 and the through groove 9 are located on the upper part of the grating connecting plate 5. The grating connecting plate 5 above the through groove 9 is a first support plate, and the grating connecting plate 5 below the through groove 9 is a second support plate. The grating lens is mounted on the first support plate. In this way, the angle of the grating lens can be adjusted by adjusting the state of the first support plate through the adjustment component.

[0056] Understandably, the through hole 8 and the through slot 9 divide the grating connecting plate 5 into an upper first support plate and a lower second support plate. The grating lens is installed on the first support plate. Through the elastic deformation of the first support plate, the adjustment component adjusts the state of the first support plate, thereby driving the change of the angle of the grating lens.

[0057] In one embodiment of this disclosure, referring to Figures 1, 4, and 5, the adjustment assembly includes: a first adjustment bolt 10 disposed on both sides of a first bolt 6; one end of the first adjustment bolt 10 passes through the grating connecting plate 5 and abuts against the tower wheel 4; the first adjustment bolt 10 is threadedly connected to the grating connecting plate 5. Thus, the pitch angle and horizontal deflection angle of the grating lens can be adjusted.

[0058] Understandably, when both first adjusting bolts 10 are rotated simultaneously, the deeper the first adjusting bolt 10 is screwed in, the more the first support plate tilts forward, causing the grating lens to tilt forward. When both first adjusting bolts 10 are loosened, the first support plate tilts backward, causing the grating lens to tilt backward. When the left first adjusting bolt 10 is screwed in inward, the first support plate deflects to the right in the horizontal direction, causing the grating lens to deflect to the right in the horizontal direction. When the right first adjusting bolt 10 is screwed in inward, the first support plate deflects to the left in the horizontal direction, causing the grating lens to deflect to the left in the horizontal direction.

[0059] In one embodiment of this disclosure, referring to Figures 1, 3, and 4, the adjustment assembly includes: a second adjusting bolt 11, located on the side of the first bolt 6 away from the through hole 8; a guide hole 12, formed at the top of the grating connecting plate 5, communicating with the through groove 9; and a threaded hole 13, formed at the top of the second support plate, coaxially arranged with the guide hole 12; wherein one end of the second adjusting bolt 11 passes through the guide hole 12 and is threadedly connected to the threaded hole 13; the adjustment assembly further includes: a third adjusting bolt 14, located on the side of the first bolt 6 away from the through hole 8; one end of the third adjusting bolt 14 passes through the first support plate and extends into the through groove 9, and the third adjusting bolt 14 is threadedly connected to the first support plate. Thus, the vertical flip angle of the grating lens can be adjusted.

[0060] Optionally, the third adjusting bolt 14 is located on the side of the second adjusting bolt 11 away from the first bolt 6.

[0061] Understandably, when the third adjusting bolt 14 is loosened and the second adjusting bolt 11 is rotated, the deeper the second adjusting bolt 11 is screwed in, the more the first support plate rotates clockwise in the vertical direction, causing the grating lens to rotate clockwise; when the second adjusting bolt 11 is loosened and the third adjusting bolt 14 is rotated, the deeper the third adjusting bolt 14 is screwed in, the more the first support plate rotates counterclockwise in the vertical direction, causing the grating lens to rotate counterclockwise.

[0062] It is understandable that there is a gap between the second adjusting bolt 11 and the guide hole 12. When adjusting the pitch angle and horizontal deflection angle of the grating lens, within the adjustment range, the second adjusting bolt 11 will not adversely affect the state change of the first support plate, thus facilitating the angle change of the grating lens.

[0063] In one embodiment of this disclosure, referring to Figure 5, the distance between the sidewall of the first support plate away from the pulley 4 and the pulley 4 is greater than the distance between the sidewall of the second support plate away from the pulley 4 and the pulley 4. This ensures a gap between the grating lens and the second support plate, preventing interference with the second support plate when the angle of the grating lens changes, and thus avoiding damage to the grating lens.

[0064] In one embodiment of this disclosure, referring to Figure 2, the support base 3 and the tower wheel 4 are connected by a pin 15 and a third bolt 16. This allows for precise positioning between the support base 3 and the tower wheel 4, improving concentricity and enhancing structural stability and positioning accuracy.

[0065] It is understandable that the support base 3 and the tower wheel 4 are radially positioned by the pin 15, and the support base 3 and the tower wheel 4 are axially fixed by the third bolt 16.

[0066] In one embodiment of this disclosure, referring to FIG1, a driver 17 is provided on the housing 1, and the direct drive motor 2 is electrically connected to the control system through the driver 17. In this way, the control system can drive the direct drive motor 2 through the driver 17, thereby improving the rotational accuracy of the direct drive motor 2.

[0067] In one embodiment of this disclosure, referring to FIG2, a light shield 18 is detachably provided on the grating connecting plate 5, which is used to protect the grating lens. In this way, damage to the grating lens can be avoided and stray light interference can be reduced.

[0068] Optionally, the light shield 18 is connected to the grating connecting plate 5 by bolts.

[0069] In one embodiment of this disclosure, the number of grating connecting plates 5 can be two, three, four or more.

[0070] In one example, referring to Figure 6, there are four grating connecting plates 5, which are evenly distributed on the outer circumference of the tower wheel 4.

[0071] In one embodiment of this disclosure, referring to Figures 1 to 6, the working process of the direct-drive high-precision multi-grating tower structure is briefly described as follows:

[0072] In use, the direct drive motor 2 is first fixed to the inner wall of the bottom end of the housing 1 with bolts and pins. The support base 3 is fixed to the output shaft of the direct drive motor 2 with bolts. The tower wheel 4 is installed on the top of the support base 3 with pin 15 and third bolt 16. The grating connecting plate 5 is installed on the outer wall of the tower wheel 4 with first bolt 6 and second bolt 7. The adjustment assembly is installed on the top of the grating connecting plate 5. The grating lens is installed on the first support plate. When it is necessary to adjust the pitch angle of the grating lens, the two first adjusting bolts 10 are rotated simultaneously. The deeper the first adjusting bolts 10 are screwed in, the more the grating lens tilts forward. Loosening the two first adjusting bolts 10 causes the grating lens to tilt backward. When the horizontal deflection angle of the grating lens needs to be adjusted, screw in the first adjusting bolt 10 on the left side, and the grating lens will deflect to the right in the horizontal direction. Screw in the first adjusting bolt 10 on the right side, and the grating lens will deflect to the left in the horizontal direction. When the vertical flip angle of the grating lens needs to be adjusted, loosen the third adjusting bolt 14 and rotate the second adjusting bolt 11. The deeper the second adjusting bolt 11 is screwed in, the more the grating lens will flip clockwise. Loosen the second adjusting bolt 11 and rotate the third adjusting bolt 14. The deeper the third adjusting bolt 14 is screwed in, the more the grating lens will flip counterclockwise. After the grating lens angle is adjusted, start the direct drive motor 2 to drive the tower wheel 4 to rotate and adjust the position of the grating lens.

[0073] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A direct-drive high-precision multi-grating tower structure, characterized in that, include: Housing (1); direct drive motor (2), located on the inner wall of the bottom end of the housing (1); support base (3), connected to the output end of the direct drive motor (2); tower wheel (4), detachably mounted on the top of the support base (3); grating connecting plate (5), detachably mounted on the outer wall of the tower wheel (4), and a grating lens is mounted on the grating connecting plate (5); wherein, an adjustment component is provided on the grating connecting plate (5), and the adjustment component is used to adjust the angle of the grating lens.

2. The direct-drive high-precision multi-grating tower structure according to claim 1, characterized in that, The top end of the grating connecting plate (5) is connected to the tower wheel (4) by a first bolt (6), and the bottom end of the grating connecting plate (5) is connected to the tower wheel (4) by a second bolt (7). The first bolt (6) is located at the middle of the top end of the grating connecting plate (5).

3. The direct-drive high-precision multi-grating tower structure according to claim 2, characterized in that, The grating connecting plate (5) has a through hole (8) and a through groove (9) communicating with the through hole (8). The through hole (8) and the through groove (9) are located on the upper part of the grating connecting plate (5). The grating connecting plate (5) above the through groove (9) is a first support plate, and the grating connecting plate (5) below the through groove (9) is a second support plate. The grating lens is mounted on the first support plate.

4. The direct-drive high-precision multi-grating tower structure according to claim 2, characterized in that, The adjustment assembly includes: a first adjustment bolt (10) disposed on both sides of the first bolt (6), one end of the first adjustment bolt (10) passing through the grating connecting plate (5) and abutting against the tower wheel (4), and the first adjustment bolt (10) being threadedly connected to the grating connecting plate (5).

5. The direct-drive high-precision multi-grating tower structure according to claim 3, characterized in that, The adjustment assembly includes: a second adjustment bolt (11) located on the side of the first bolt (6) away from the through hole (8); a guide hole (12) located at the top of the grating connecting plate (5) and communicating with the through groove (9); and a threaded hole (13) located at the top of the second support plate and coaxially arranged with the guide hole (12); wherein one end of the second adjustment bolt (11) passes through the guide hole (12) and is threadedly connected to the threaded hole (13).

6. The direct-drive high-precision multi-grating tower structure according to claim 3, characterized in that, The adjustment assembly includes: a third adjustment bolt (14), located on the side of the first bolt (6) away from the through hole (8); one end of the third adjustment bolt (14) passes through the first support plate and extends into the through groove (9); the third adjustment bolt (14) is threadedly connected to the first support plate.

7. The direct-drive high-precision multi-grating tower structure according to claim 3, characterized in that, The distance between the side wall of the first support plate away from the tower wheel (4) and the tower wheel (4) is greater than the distance between the side wall of the second support plate away from the tower wheel (4) and the tower wheel (4).

8. The direct-drive high-precision multi-grating tower structure according to claim 1, characterized in that, The support base (3) is connected to the tower wheel (4) by a pin (15) and a third bolt (16).

9. The direct-drive high-precision multi-grating tower structure according to claim 1, characterized in that, A driver (17) is provided on the housing (1), and the direct drive motor (2) is electrically connected to the control system through the driver (17).

10. The direct-drive high-precision multi-grating tower structure according to claim 1, characterized in that, A light shield (18) is detachably provided on the grating connecting plate (5), and the light shield (18) is used to protect the grating lens.

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