CN108873307B - Safety brake protection structure for azimuth axis of large-caliber telescope - Google Patents
Safety brake protection structure for azimuth axis of large-caliber telescope Download PDFInfo
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- CN108873307B CN108873307B CN201810634264.0A CN201810634264A CN108873307B CN 108873307 B CN108873307 B CN 108873307B CN 201810634264 A CN201810634264 A CN 201810634264A CN 108873307 B CN108873307 B CN 108873307B
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- telescope
- azimuth
- azimuth axis
- brake
- axis
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
Abstract
The invention discloses a safe braking protection structure for an azimuth axis of a large-caliber telescope. The disc brake structure is located inside the telescope azimuth axis system, and four groups of disc brakes are hung upside down on a turntable on the telescope azimuth axis system and are uniformly distributed in the circumferential direction. When the telescope works abnormally in azimuth, the system starts the disc brakes, and the four groups of disc brakes synchronously clamp the brake rings on the telescope base. The telescope azimuth axis is forced to stop rotating. Along with the increasing of the caliber of a large telescope, the size and the weight of the telescope are increased, and the rotational inertia of an azimuth axis system is also increased. If the motor of the azimuth axis of the large-caliber telescope is out of control, the safety of important optical electronic components such as a primary mirror and important parts of an azimuth axis and a pitching axis can be seriously influenced, so that the design of safe braking protection of the azimuth axis is very important. The structure has the remote control capability and is simple, safe and reliable.
Description
Technical Field
The invention relates to the technical field of mechanical safety brake protection, in particular to a safety brake protection structure for an azimuth axis of a large-caliber telescope.
Background
The large-aperture telescope mostly adopts a horizontal telescope frame structure, the pitching axis system and the main lens cone component are fixedly arranged on the azimuth axis system, and the tracking and the measurement of a target are realized through the rotation of the azimuth axis system and the pitching axis system. A spring buffer is additionally arranged in a normal azimuth axis system to serve as mechanical buffering and limiting, so that the situation that the azimuth axis system rotates beyond a working range and damages important parts, circuits of an electric control system and the like are avoided. However, as the caliber of a large telescope is larger and larger, the telescope is increased in size and weight, the rotational inertia of an azimuth axis is larger and larger, the traditional limiting structure form of the spring buffer cannot absorb the kinetic energy of azimuth rotation, and the functional requirement of mechanical limiting cannot be met.
The safety brake protection for the azimuth axis of the large-caliber telescope is related to the project. When the telescope works abnormally, a telescope rack system generates larger inertia moment, the peak locked-rotor moment of the motor is larger, and the out-of-control motor can cause serious consequences on the safety of important parts such as a main mirror and the like, so that the safety design of an azimuth axis is very important.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcome prior art's not enough, provide a novel heavy-calibre telescope azimuth axis safety braking protection architecture, the heavy-calibre telescope azimuth axis safety braking protection architecture that this structure realized has: simple structure, high reliability and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: a safe braking protection structure for an azimuth axis of a large-aperture telescope comprises a base, an upper rotary table, a disc brake, a brake supporting seat and an azimuth radial bearing; the four disc brakes are uniformly distributed in the azimuth axis system in the circumference, and the disc brakes are fixedly connected to the upper rotary table through brake mounting seats respectively. The upper turntable is used as the largest rotating motion part in the telescope azimuth axis system, and the upper end supports the components such as the pitching axis system, the main lens barrel assembly and the like. The azimuth radial bearing provides a rotary axis for the telescope azimuth axis, and in the working process of the telescope, when the telescope azimuth axis works abnormally and needs to be started for safety brake protection, the disc brake works, and the brake ring on the clamping base is used for stopping the rotation of the telescope azimuth axis.
The telescope azimuth axis system is provided with azimuth electric limiting, when the azimuth axis rotates to trigger the azimuth electric limiting, the power supply of the azimuth motor is disconnected, the azimuth motor driver is in short circuit, the disc brake is started, the azimuth axis is decelerated by means of friction torque, and kinetic energy on the azimuth axis is converted into work done by friction torque of the disc brake.
The brakes are distributed in a radial mode so as to eliminate the impact of braking force on the radial bearing of the azimuth, and only provide braking torque for the azimuth shaft.
The number of the disc brake components can be increased or reduced according to the braking torque required by the braking of the azimuth axis of the actual large-aperture telescope.
The principle of the invention is as follows: a novel safety braking protection structure for azimuth axis of large-aperture telescope. When the telescope azimuth axis works abnormally and the safety brake protection needs to be started, the disc brake works to clamp the brake ring on the base, the telescope azimuth axis starts to brake, and the azimuth axis is decelerated by means of friction torque until the telescope azimuth axis stops. The kinetic energy on the azimuth axis is converted into work done by the friction torque of the disc brake, and the braking of the azimuth axis of the telescope is completed.
First, a disc brake structure is designed. The base with the braking ring belt is used as a supporting piece of the whole telescope and is fixedly arranged on a foundation through a leveling mechanism. The upper rotary table is used as an important supporting piece of an azimuth axis system and rotates along with the azimuth axis system of the telescope. The disc brake is inversely hung in the azimuth axis, and is respectively fixedly connected to the upper rotary table through the brake supporting seat, and the position of the disc brake is adjusted, so that the disc brake can clamp the braking annular belt with the largest effective contact area; when the telescope azimuth axis works abnormally and the safety brake protection needs to be started, the disc brake disc works to clamp the brake ring belt on the base, and the telescope azimuth axis stops rotating.
Secondly, in order to ensure the sufficient safety and reliability of the system, the telescope azimuth axis is provided with azimuth electric limiting, when the azimuth axis rotates to trigger the azimuth electric limiting, the power supply of the azimuth motor is disconnected, the azimuth motor driver is in short circuit, the disc brake is started, and the azimuth axis braking is completed. The limiting angle of the azimuth axis of the telescope is within the required range, and the braking protection is performed on important parts of the telescope.
The structure is suitable for the safety brake protection of the azimuth axis of the large-caliber telescope. The azimuth axis of the large-aperture telescope has larger inertia moment, and if the motor is out of control, the safety of important optical electronic components such as a primary mirror and the like can be seriously influenced, so that the design of safe braking protection of the azimuth axis is very important.
Compared with the prior art, the invention has the advantages that:
(1) the invention overcomes the defects of the prior art, provides a novel azimuth axis safety brake protection structure of a large-caliber telescope, has remote control capability, and is simple in structure, safe and reliable.
(2) The invention solves the problems that the large-caliber telescope frame structure has large volume and weight, the azimuth axis has large rotational inertia, and the mechanical limit is difficult to realize. The large-caliber telescope designed and developed at present mostly adopts the traditional spring buffer structure form for mechanical limit. Conventional spring dampers have not been able to meet functional requirements.
(3) The invention adopts four groups of disc brakes which are evenly distributed on the circumference, thereby further enhancing the reliability of the mechanical limit of the whole azimuth axis.
Drawings
FIG. 1 is an assembly view of the safety braking protection structure of the azimuth axis of the large-aperture telescope of the present invention;
FIG. 2 is a view of the brake layout of the present invention;
fig. 3 shows a structure of the base brake ring.
The reference numbers in the figures mean: the brake comprises a base 1, an upper turntable 2, a brake disc supporting seat 3, a disc brake 4, a radial bearing 5 and a brake ring belt 6.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The invention relates to a safety brake protection structure for an azimuth axis of a large-caliber telescope.
The assembly diagram of the azimuth axis safety brake protection structure of the large-aperture telescope is shown in figure 1.
Firstly, the inner space of the telescope azimuth axis is large, the telescope azimuth axis can be provided with the installation position of the azimuth axis safety brake protection structure, and workers can enter the azimuth axis through the base 1, so that the installation and maintenance are convenient, and therefore the azimuth axis is selected to be internally provided with the safety brake protection structure;
secondly, in the working process of the telescope, the disc brake 4 and the upper rotating platform 1 rotate around the azimuth axis together; the disc brakes 4 are respectively and fixedly connected to the upper rotary table 2 through brake supporting seats, and the positions of the disc brakes 4 are adjusted, so that the disc brakes 4 can clamp the braking ring belts 6 with the largest effective contact area; when the telescope works abnormally and needs to start safety brake protection, the disc brake 4 works to clamp the brake ring belt 6 on the base 1, and the azimuth axis of the telescope stops rotating.
Thirdly, in order to ensure sufficient safety and reliability of the system, four disc brakes 4 are designed to be distributed in the circumferential direction at the same time. And reliable guarantee is provided for the safety of important parts such as the primary mirror and the like. The telescope azimuth axis system is provided with azimuth electric limit, when the azimuth axis rotates to trigger the azimuth electric limit, the power supply of the azimuth motor is cut off, the azimuth motor driver is in short circuit, the disc brake 4 is started, and the azimuth axis brake is completed.
As shown in FIG. 1, the invention relates to a safety braking protection structure for azimuth axis of large caliber telescope, comprising: the base 1 is fixed on a foundation through a leveling mechanism and supports the rotating part of the whole telescope. The upper turntable 2, which is the largest part of the azimuth axis, rotates around the azimuth axis, and the upper end supports the components such as the pitching axis, the main lens barrel assembly and the like. The disc brakes 4 are distributed inside the azimuth axis in a circumferential and radial mode and are fixedly connected to the upper rotary table 2 through the brake disc supporting seats 3 respectively. The brake with radial distribution can eliminate the impact of braking force on the radial bearing of the bearing and provide braking torque. And the azimuth radial bearing 5 provides a rotary axis for the telescope azimuth axis.
Fig. 2 is a layout structure diagram of the brake of the invention, and four groups of disc brakes are uniformly distributed on the circumference.
Fig. 3 is a structure diagram of a brake ring belt on the base, the brake ring belt 6 on the base, and a ring belt protruding from the inner part of the base cavity are used as a friction brake ring of the disc brake, when the disc brake works, the brake ring belt is clamped, and the telescope azimuth axis stops working.
Claims (3)
1. The utility model provides a heavy-calibre telescope azimuth axis safety braking protection architecture which characterized in that: the structure comprises a base (1), an upper rotary table (2), a brake supporting seat (3), a disc brake (4) and an azimuth radial bearing (5); the disc brakes (4) are circumferentially distributed inside the azimuth axis system, the disc brakes (4) are fixedly connected to the upper rotary table (2) through brake supporting seats (3) respectively, the upper rotary table (2) serves as a maximum rotary motion part in the telescope azimuth axis system, the upper end supports a pitching axis system and a main lens cone assembly, the azimuth radial bearing (5) provides a rotary axis for the telescope azimuth axis system, and in the working process of a telescope, when the telescope azimuth axis system works abnormally and safety brake protection needs to be started, the disc brakes (4) work, a brake ring belt (6) on the clamping base (1) clamps, and the telescope azimuth axis stops rotating; the disc brakes are distributed diametrically to eliminate the impact of braking force on the azimuth radial bearing and provide braking torque only to the azimuth shaft.
2. The azimuth axis safety brake protection structure of the large-caliber telescope according to claim 1, characterized in that: the telescope azimuth axis system is provided with azimuth electric limit, when the azimuth axis is switched to generate electricity and limit, the power supply of the azimuth motor is disconnected, the azimuth motor driver is in short circuit, the disc brake (4) is started, the azimuth axis is decelerated by means of friction torque at the moment, and kinetic energy on the azimuth axis is converted into work done by friction torque of the disc brake.
3. The azimuth axis safety brake protection structure of the large-caliber telescope according to claim 1, characterized in that: the structure is also suitable for large-caliber telescopes needing braking torques of different azimuth axes, and the number of disc brake components is correspondingly increased or reduced to meet the actual working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634264.0A CN108873307B (en) | 2018-06-20 | 2018-06-20 | Safety brake protection structure for azimuth axis of large-caliber telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634264.0A CN108873307B (en) | 2018-06-20 | 2018-06-20 | Safety brake protection structure for azimuth axis of large-caliber telescope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108873307A CN108873307A (en) | 2018-11-23 |
| CN108873307B true CN108873307B (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810634264.0A Active CN108873307B (en) | 2018-06-20 | 2018-06-20 | Safety brake protection structure for azimuth axis of large-caliber telescope |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113895773B (en) * | 2021-10-12 | 2023-06-13 | 中国科学院光电技术研究所 | Packaging device for integrally transporting telescope primary telescope tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777645A (en) * | 2014-01-21 | 2014-05-07 | 中国科学院国家天文台南京天文光学技术研究所 | Dual-redundancy telescope tracking device for astronomical telescope |
| CN107145027A (en) * | 2017-06-23 | 2017-09-08 | 成都阿普奇科技股份有限公司 | A kind of floating platform photoelectric monitoring device |
| CN207297699U (en) * | 2017-09-22 | 2018-05-01 | 凯迈（洛阳）测控有限公司 | A kind of adjustable resistance square photoelectric stable platform orientation brake apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013105083A1 (en) * | 2013-05-17 | 2014-11-20 | Endochoice, Inc. | Control unit for an endoscope having an angled unit |
| CN103885463B (en) * | 2014-03-21 | 2016-05-11 | 中国科学院国家天文台南京天文光学技术研究所 | The spacing arrestment mechanism of electromechanical of rotating machinery and installation thereof, method of adjustment |
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- 2018-06-20 CN CN201810634264.0A patent/CN108873307B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777645A (en) * | 2014-01-21 | 2014-05-07 | 中国科学院国家天文台南京天文光学技术研究所 | Dual-redundancy telescope tracking device for astronomical telescope |
| CN107145027A (en) * | 2017-06-23 | 2017-09-08 | 成都阿普奇科技股份有限公司 | A kind of floating platform photoelectric monitoring device |
| CN207297699U (en) * | 2017-09-22 | 2018-05-01 | 凯迈（洛阳）测控有限公司 | A kind of adjustable resistance square photoelectric stable platform orientation brake apparatus |
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| CN108873307A (en) | 2018-11-23 |
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