CN209992748U - Pretightening mechanism for telescope blade - Google Patents
Pretightening mechanism for telescope blade Download PDFInfo
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- CN209992748U CN209992748U CN201920923285.4U CN201920923285U CN209992748U CN 209992748 U CN209992748 U CN 209992748U CN 201920923285 U CN201920923285 U CN 201920923285U CN 209992748 U CN209992748 U CN 209992748U
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- truss
- cavity
- threaded hole
- telescope
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Abstract
The utility model discloses a pretension mechanism of telescope blade for with the one end and the truss connection of blade, including first connecting portion and double-screw bolt, the one end and the blade of first connecting portion are in succession, and the other end inserts in the cavity that corresponds on the truss, and first screw hole has been seted up along its length direction to the one end that first connecting portion is arranged in the cavity, and the second screw hole has been seted up along the diametric (al) of truss to the bottom of cavity, and the double-screw bolt inserts in proper order in corresponding first screw hole and the second screw hole, and threaded connection with it. The auxiliary mirror is centered and adjusted through the pre-tightening blade, and the stud is rotated because the circular ring of the truss is of a fixed structure, so that the blade and the circular ring are displaced relatively, and the purpose of pre-tightening the blade is achieved. The auxiliary mirror is centrally positioned by rotating the stud of each pre-tightening mechanism and adjusting the blades, so that the operation is very convenient. And because the stud is in threaded connection with the circular ring, the adjustment amount is a continuous numerical value, and the adjustment precision is high.
Description
Technical Field
The utility model belongs to the technical field of optical equipment, concretely relates to pretension mechanism of telescope blade.
Background
The secondary mirror of the telescope needs to be arranged coaxially with the primary mirror, so that the lens barrel needs to be connected with the truss through a plurality of blades which are radially arranged, and the blades need to be adjusted in the using process, so that the secondary mirror and the primary mirror are coaxial.
One end of a blade of an existing telescope is directly connected with a truss through a bolt, and the blade is pre-tightened by adding a gasket between the blade and the truss, so that gaskets with different thicknesses need to be designed. When the blades are pre-tightened each time, different gaskets need to be selected according to the gap between the blades and the blades for assembly, and then adjustment is carried out, so that the operation is very complicated, the pre-tightening effect is poor, and the positioning accuracy is poor.
Disclosure of Invention
The utility model aims at providing a pretension mechanism of telescope blade, it carries out the pretension to the blade to increase the gasket between blade and the truss among the solution prior art, when pretension blade at every turn, need assemble according to the gasket that the two clearance selection is different, then the adjustment, and is very loaded down with trivial details, and pretension effect is not good, the poor technical problem of positioning accuracy.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the pre-tightening mechanism of the telescope blade is used for connecting one end of the blade with a truss and comprises a first connecting portion and a stud, one end of the first connecting portion is connected with the blade, the other end of the first connecting portion is inserted into a corresponding cavity on the truss, a first threaded hole is formed in one end, located in the cavity, of the first connecting portion along the length direction of the first connecting portion, a second threaded hole is formed in the bottom of the cavity along the diameter direction of the truss, and the stud is sequentially inserted into the corresponding first threaded hole and the second threaded hole and is in threaded connection with the first threaded hole and the.
The auxiliary mirror is centered and adjusted through the pre-tightening blade, and the stud is rotated because the circular ring of the truss is of a fixed structure, so that the blade and the circular ring are displaced relatively, and the purpose of pre-tightening the blade is achieved. The auxiliary lens is centrally positioned by rotating the stud of each pre-tightening mechanism and adjusting the blades, and a displacement adjusting mechanism of the middle auxiliary lens barrel is omitted, so that the operation is very convenient. And because the stud is in threaded connection with the circular ring, the adjustment amount is a continuous numerical value, and the adjustment precision is high.
In a further improvement, the outer contour of one end of the first connecting part connected with the bolt is a ball head. Because the cavity on the truss has certain degree of depth, blade length is longer, through being the bulb with the one end design of first connecting portion, then the cavity inner wall of first connecting portion is the point contact, prevents that the blade from taking place the piece and deflecting the back, and the inner wall card of first connecting portion and cavity hinders, influences the adjustment.
The improved truss is characterized in that a plurality of third threaded holes are formed in the ring of the truss and are the same as the blades in number, each third threaded hole is communicated with a corresponding cavity, a positioning rod is inserted into each third threaded hole, an outer threaded hole is formed in each positioning rod, each positioning rod is in threaded connection with the ring of the truss, and one end of each positioning rod can abut against the spherical surface of the ball head by screwing the corresponding positioning rod. After the blades are adjusted and pre-tightened in place, the positioning rod is rotated, one end of the positioning rod is abutted against the spherical surface of the ball head, the first connecting part and the truss are fixed into a whole, and the blades are prevented from moving due to looseness of the stud caused by shaking and the like.
In a further improvement, a spherical gasket is arranged between the ball head and the inner wall of the concave cavity. Through setting up spherical packing ring, to bulb automatic adjustment position, reach the purpose from rectifying a position, guarantee that the bulb atress is even, stable in structure.
The improved structure is characterized in that one end, far away from the bolt, of the first connecting portion is provided with a U-shaped clamping groove, one end of the blade is inserted into the U-shaped clamping groove and is riveted with the first connecting portion through a rivet, and connection is firm.
Compared with the prior art, the beneficial effects of the utility model are that:
the auxiliary mirror is centered and adjusted through the pre-tightening blade, and the stud is rotated because the circular ring of the truss is of a fixed structure, so that the blade and the circular ring are displaced relatively, and the purpose of pre-tightening the blade is achieved. The auxiliary mirror is centrally positioned by rotating the stud of each pre-tightening mechanism and adjusting the blades, so that the operation is very convenient. And because the stud is in threaded connection with the circular ring, the adjustment amount is a continuous numerical value, and the adjustment precision is high.
Drawings
Fig. 1 is a structural view of a centering device for a telescope secondary mirror.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a structural view of the first connection portion.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a left side view of fig. 3.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following will combine the embodiments of the present invention to clearly and completely describe the technical solution of the present invention.
As shown in fig. 1-5, the pre-tightening mechanism of the telescope blade is used for connecting one end of the blade 1 with the truss, and includes a first connecting portion 5 and a stud 6, one end of the first connecting portion 5 is connected with the blade 1, the other end is inserted into a corresponding cavity on the truss 3, a first threaded hole 51 is formed in one end of the first connecting portion 5 located in the cavity along the length direction thereof, a second threaded hole is formed in the bottom of the cavity along the diameter direction of the truss, and the stud 6 is sequentially inserted into the corresponding first threaded hole and the second threaded hole and is in threaded connection therewith.
The auxiliary mirror is centered and adjusted through the pre-tightening blade, and the stud is rotated because the circular ring of the truss is of a fixed structure, so that the blade and the circular ring are displaced relatively, and the purpose of pre-tightening the blade is achieved. The auxiliary lens is centrally positioned by rotating the stud of each pre-tightening mechanism and adjusting the blades, and a displacement adjusting mechanism of the middle auxiliary lens barrel is omitted, so that the operation is very convenient. And because the stud is in threaded connection with the circular ring, the adjustment amount is a continuous numerical value, and the adjustment precision is high.
In this embodiment, the outer contour of the end of the first connecting portion 5 connected with the bolt 6 is a ball 52. Because the cavity has certain degree of depth, blade length is longer, through being the bulb with the one end design of first connecting portion, then the cavity inner wall of first connecting portion is the point contact, prevents that the blade from taking place the piece and deflecting the back, and the inner wall card of first connecting portion and cavity hinders, influences the adjustment.
In this embodiment, a plurality of third screw holes are formed in the ring 4 of the truss, the number of the third screw holes is the same as that of the blades, each third screw hole is communicated with one corresponding cavity, the positioning rod 7 is inserted into the third screw hole, an outer screw hole is formed in the positioning rod, the positioning rod is in threaded connection with the truss ring, and one end of the positioning rod can abut against the spherical surface of the ball head by screwing the positioning rod. After the blades are adjusted and pre-tightened in place, the positioning rod is rotated, one end of the positioning rod is abutted against the spherical surface of the ball head, the first connecting part and the truss are fixed into a whole, and the blades are prevented from moving due to looseness of the stud caused by shaking and the like.
In this embodiment, a spherical washer is disposed between the ball 52 and the inner wall of the cavity. Through setting up spherical packing ring, to bulb automatic adjustment position, reach the purpose from rectifying a position, guarantee that the bulb atress is even, stable in structure.
In this embodiment, a U-shaped slot 53 is formed in an end of the first connecting portion, which is away from the bolt, and one end of the blade is inserted into the U-shaped slot and is riveted with the first connecting portion by a rivet, so that the connection is firm.
What has not been described in detail in the present invention is the prior art or can be realized by the prior art, and the specific embodiment of the present invention is only the preferred embodiment of the present invention, which is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (5)
1. The pre-tightening mechanism of the telescope blade is used for connecting one end of the blade with a truss, and is characterized by comprising a first connecting part and a stud, wherein one end of the first connecting part is connected with the blade, the other end of the first connecting part is inserted into a corresponding cavity on the truss, a first threaded hole is formed in one end, located in the cavity, of the first connecting part along the length direction of the first connecting part, a second threaded hole is formed in the bottom of the cavity along the diameter direction of the truss, and the stud is sequentially inserted into the corresponding first threaded hole and the second threaded hole and is in threaded connection with the first threaded hole and.
2. The pretensioning mechanism for the telescope blade according to claim 1, wherein the first connecting portion is connected with the bolt, and the outer contour of one end of the first connecting portion is a ball head.
3. The pre-tightening mechanism for the telescope blade according to claim 2, wherein the truss is provided with a plurality of third threaded holes, the number of the third threaded holes is the same as that of the blades, each third threaded hole is communicated with a corresponding one of the cavities, a positioning rod is inserted into each third threaded hole, each positioning rod is provided with an outer threaded hole, each positioning rod is in threaded connection with the truss ring, and one end of each positioning rod can abut against the spherical surface of the ball head by screwing the positioning rod.
4. The pretensioning mechanism for the blades of a telescope as claimed in claim 3, wherein a spherical washer is disposed between the ball and the inner wall of the cavity.
5. The pretensioning mechanism for the telescope blade according to any one of claims 1 to 4, wherein one end of the first connecting part, which is far away from the bolt, is provided with a U-shaped clamping groove, and one end of the blade is inserted into the U-shaped clamping groove and is riveted with the first connecting part through a rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923285.4U CN209992748U (en) | 2019-06-19 | 2019-06-19 | Pretightening mechanism for telescope blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923285.4U CN209992748U (en) | 2019-06-19 | 2019-06-19 | Pretightening mechanism for telescope blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209992748U true CN209992748U (en) | 2020-01-24 |
Family
ID=69297218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920923285.4U Active CN209992748U (en) | 2019-06-19 | 2019-06-19 | Pretightening mechanism for telescope blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209992748U (en) |
-
2019
- 2019-06-19 CN CN201920923285.4U patent/CN209992748U/en active Active
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