CN110579856B - Decoupling device for wide field telescopes - Google Patents

Decoupling device for wide field telescopes Download PDF

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Publication number
CN110579856B
CN110579856B CN201910884588.4A CN201910884588A CN110579856B CN 110579856 B CN110579856 B CN 110579856B CN 201910884588 A CN201910884588 A CN 201910884588A CN 110579856 B CN110579856 B CN 110579856B
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support assembly
rolling support
casing
flexible hinge
decoupling device
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CN110579856A (en
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宿馨文
吴小霞
王建立
李剑锋
邵亮
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/182Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/183Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators

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  • Life Sciences & Earth Sciences (AREA)
  • Astronomy & Astrophysics (AREA)
  • Sustainable Development (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)

Abstract

The invention relates to a decoupling device for a large-field telescope, which comprises a shell, a coupling mechanism and a coupling mechanism, wherein an elastic piece is accommodated in the shell, a top cover is arranged at the top of the elastic piece, and a cavity is formed by the top cover and the shell; the top of the shell is provided with an opening; the rolling support assembly is arranged above the top cover and positioned in the cavity, and comprises a support frame and a ball group arranged in the support frame; the flexible hinge assembly is used for supporting the primary mirror and comprises a flexible hinge and a movable plate connected to the bottom of the flexible hinge, the flexible hinge penetrates through an opening of the shell, the movable plate is arranged on the rolling support assembly, the width of the cavity is larger than the length of the movable plate, and the movable plate can horizontally move in the cavity in a left-right mode. The decoupling device is suitable for the condition that the primary mirror needs to have larger transverse displacement in a telescope, and is compatible with an overload protection function.

Description

用于大视场望远镜的解耦装置Decoupling device for wide field telescopes

技术领域technical field

本发明涉及望远镜技术领域,特别涉及一种用于大视场望远镜的解耦装置。The invention relates to the technical field of telescopes, in particular to a decoupling device for a large field of view telescope.

背景技术Background technique

近年来国内望远镜技术的逐渐发展,在追求高分辨率的同时,高的搜索速度也成为了科研工作者的研究目标,大口径大视场望远镜应运而生。大口径大视场望远镜对于主镜支撑技术提出了新的要求,即除了满足非干扰环境下主镜的轴向支撑外,当主镜受到地震、风载等影响而受到过载应力时,轴向支撑机构具有过载保护功能;另外,为了配合大口径大视场的设计,轴向支撑需要在保证支撑的情况下,允许主镜进行毫米数量级的横向位移,传统的柔性杆轴向支撑并不能达到要求。所以,需要对大口径大视场望远镜的轴向支撑重新设计。In recent years, with the gradual development of domestic telescope technology, while pursuing high resolution, high search speed has also become the research goal of scientific researchers, and large-diameter and large-field telescopes have emerged as the times require. Large-diameter and large-field telescopes put forward new requirements for the main mirror support technology, that is, in addition to meeting the axial support of the main mirror in a non-interference environment, when the main mirror is subjected to overload stress due to earthquakes, wind loads, etc., the axial support The mechanism has overload protection function; in addition, in order to cooperate with the design of large diameter and large field of view, the axial support needs to allow the lateral displacement of the main mirror in the order of millimeters under the condition of ensuring support, and the traditional flexible rod axial support cannot meet the requirements. . Therefore, it is necessary to redesign the axial support of large-aperture and large-field telescopes.

发明内容SUMMARY OF THE INVENTION

本发明主要解决的技术问题是提供一种适用于望远镜中需要主镜具有较大横向位移的情况,同时兼容过载保护功能的用于大视场望远镜的解耦装置。The main technical problem to be solved by the present invention is to provide a decoupling device for a telescope with a large field of view, which is suitable for the situation that the main mirror has a large lateral displacement in the telescope and is compatible with the overload protection function.

为解决上述技术问题,本发明采用的一个技术方案是:In order to solve the above-mentioned technical problems, a technical scheme adopted in the present invention is:

一种用于大视场望远镜的解耦装置,包括:A decoupling device for a wide field telescope, comprising:

壳体,所述壳体内收容有弹性件,所述弹性件的顶部设有顶盖,所述顶盖与壳体形成一腔体;壳体的顶部开设有开口;a casing, an elastic piece is accommodated in the casing, a top cover is provided on the top of the elastic piece, and the top cover and the casing form a cavity; the top of the casing is provided with an opening;

滚动支撑组件,设置在所述顶盖的上方且位于腔体内,所述滚动支撑组件包括支撑架及设置在支撑架内滚珠组;a rolling support assembly, disposed above the top cover and located in the cavity, the rolling support assembly includes a support frame and a ball group arranged in the support frame;

柔性铰链组件,用于支撑主镜,包括柔性铰链及连接在柔性铰链底部的移动板,所述柔性铰链穿过壳体的开口,所述移动板设置在滚动支撑组件上,腔体的宽度大于移动板的长度,所述移动板可在腔体内左右平移。A flexible hinge assembly for supporting the main mirror, including a flexible hinge and a moving plate connected at the bottom of the flexible hinge, the flexible hinge passes through the opening of the casing, the moving plate is arranged on the rolling support assembly, and the width of the cavity is greater than The length of the moving plate, which can translate left and right in the cavity.

在其中一个实施例中,所述滚动支撑组件包括上下设置第一滚动支撑组件和第二滚动支撑组件,所述移动板设置在第一滚动支撑组件和第二滚动支撑组件之间。In one embodiment, the rolling support assembly includes a first rolling support assembly and a second rolling support assembly disposed up and down, and the moving plate is disposed between the first rolling support assembly and the second rolling support assembly.

在其中一个实施例中,所述壳体包括外壳,及分别设置外壳两端的上盖和底盖,所述上盖与第一滚动支撑组件之间从下至上依次设有上挡环和碟形弹簧,所述柔性铰链穿设在上挡环和碟形弹簧中。In one embodiment, the casing includes a casing, an upper cover and a bottom cover respectively provided with two ends of the casing, and an upper baffle ring and a dish-shaped plate are arranged between the upper cover and the first rolling support assembly from bottom to top. The flexible hinge is inserted through the upper retaining ring and the disc spring.

在其中一个实施例中,所述上挡环和第一滚动支撑组件均与上盖形成的内孔壁过盈配合,使得上挡环和第一滚动支撑组件在壳体内部横向方向固定。In one embodiment, both the upper baffle ring and the first rolling support assembly are in interference fit with the inner hole wall formed by the upper cover, so that the upper baffle ring and the first rolling support assembly are fixed in the lateral direction inside the casing.

在其中一个实施例中,所述壳体内设有无油衬套,所述弹性件设置在无油衬套内且与无油衬套间隙配合,无油衬套与壳体过盈配合。In one embodiment, the housing is provided with an oil-free bushing, the elastic member is arranged in the oil-free bushing and is in clearance fit with the oil-free bushing, and the oil-free bushing and the housing are in interference fit.

在其中一个实施例中,所述弹性件为弹簧,所述壳体的底部设有凸起,所述凸起与弹簧底部的内孔配合。In one embodiment, the elastic member is a spring, the bottom of the housing is provided with a protrusion, and the protrusion is matched with the inner hole of the bottom of the spring.

在其中一个实施例中,所述顶盖的直径大于开口的直径,弹簧压缩封装在壳体内,所压入弹簧压缩量乘以弹簧刚度即为过载保护力值,压缩量根据无油衬套的高度确定。In one embodiment, the diameter of the top cover is larger than the diameter of the opening, the spring is compressed and encapsulated in the casing, the compression amount of the pressed spring multiplied by the spring stiffness is the overload protection force value, and the compression amount is based on the oil-free bushing. Highly determinate.

在其中一个实施例中,所述壳体包括外壳,及分别设置外壳两端的上盖和底盖,上盖和底盖均与外壳螺纹连接。In one embodiment, the casing includes a casing, an upper cover and a bottom cover respectively provided at two ends of the casing, and both the upper cover and the bottom cover are screwed with the casing.

在其中一个实施例中,所述滚珠组的多个滚珠均匀分布在支撑架上。In one embodiment, the plurality of balls of the ball group are evenly distributed on the support frame.

本发明的有益效果是:相对于现有技术,本发明提供的一种用于大视场望远镜的解耦装置,适用于望远镜中需要主镜具有较大横向位移的情况,同时兼容过载保护功能。此外,与传统单纯柔性杆支撑相比,利用滚珠组使得主镜的横向位移不单单依靠柔性杆的柔性,可以缩短主镜支撑机构高度,使得整个机构更加紧凑。其过载保护功能,使主镜在受到地震风载等过大外部载荷时,使主镜支撑部分变成由刚体变成弹性体,避免主镜受到过大应力,并且这个过载保护值可随需求设定。The beneficial effects of the present invention are: compared with the prior art, the present invention provides a decoupling device for a telescope with a large field of view, which is suitable for the situation in which the main mirror needs to have a large lateral displacement in the telescope, and is compatible with overload protection functions at the same time. . In addition, compared with the traditional simple flexible rod support, the use of the ball group makes the lateral displacement of the main mirror not only depends on the flexibility of the flexible rod, but also shortens the height of the main mirror support mechanism, making the entire mechanism more compact. Its overload protection function enables the main mirror to change from a rigid body to an elastic body when the main mirror is subjected to excessive external loads such as seismic wind loads, so as to avoid excessive stress on the main mirror, and the overload protection value can be adjusted according to the needs. set up.

附图说明Description of drawings

图1是一实施方式的用于大视场望远镜的解耦装置的半剖示意图;1 is a schematic half-section schematic diagram of a decoupling device for a wide-field telescope according to an embodiment;

图2是一实施方式的用于大视场望远镜的解耦装置在大视场望远镜中的连接位置示意图;2 is a schematic diagram of the connection position of a decoupling device for a wide-field telescope of an embodiment in a large-field telescope;

图3是一实施方式的用于大视场望远镜的解耦装置尺寸示意图。FIG. 3 is a schematic view of the size of a decoupling device for a large field of view telescope according to an embodiment.

具体实施方式Detailed ways

请参阅图1~图3,本发明提供一种用于大视场望远镜的解耦装置100,包括壳体,收容在壳体内的滚动支撑组件,及穿设在壳体上的柔性铰链组件,柔性铰链组件通过滚动支撑组件带动可左右移动(横向方向移动)。Referring to FIGS. 1 to 3 , the present invention provides a decoupling device 100 for a large field of view telescope, including a casing, a rolling support assembly accommodated in the casing, and a flexible hinge assembly passing through the casing, The flexible hinge assembly can be moved left and right (transverse direction movement) driven by the rolling support assembly.

具体地,解耦装置100包括柔性铰链组件1、碟形弹簧2、上盖3、上挡环4、滚珠组5、支撑架6、顶盖7、无油衬套8、弹性件9、外壳10、底盖11。Specifically, the decoupling device 100 includes a flexible hinge assembly 1 , a disc spring 2 , an upper cover 3 , an upper retaining ring 4 , a ball group 5 , a support frame 6 , a top cover 7 , an oil-free bushing 8 , an elastic member 9 , and a housing 10. Bottom cover 11.

上盖3和底盖11设置在外壳10的两端,三者共同形成壳体,具体地,上盖3和底盖11均与外壳10螺纹连接。上盖3的中间开设有开口,底盖11上设置有凸起。弹性件9收容在壳体内,弹性件9的两端分别与顶盖7和底盖11相抵。更进一步地,弹性件9为弹簧,底盖11的凸起与弹簧底部的内孔配合,顶盖7下方与弹簧相连,无油衬套8设置在壳体内,且顶盖7与无油衬套8为间隙配合,无油衬套8与外壳10为过盈配合。顶盖7的直径大于开口的直径,弹簧压缩封装在壳体内,所压入弹簧压缩量乘以弹簧刚度即为过载保护力值,压缩量根据无油衬套8的高度确定。外壳10和顶盖7及上盖3形成一个腔体,滚动支撑组件设置在顶盖7上,且位于腔体内。The upper cover 3 and the bottom cover 11 are disposed at both ends of the casing 10 , and the three together form a casing. Specifically, the upper cover 3 and the bottom cover 11 are both screwed to the casing 10 . The upper cover 3 is provided with an opening in the middle, and the bottom cover 11 is provided with a protrusion. The elastic member 9 is accommodated in the casing, and two ends of the elastic member 9 are respectively abutted against the top cover 7 and the bottom cover 11 . Further, the elastic member 9 is a spring, the protrusion of the bottom cover 11 is matched with the inner hole of the bottom of the spring, the bottom of the top cover 7 is connected with the spring, the oil-free bushing 8 is arranged in the housing, and the top cover 7 is connected with the oil-free bushing. The sleeve 8 is a clearance fit, and the oil-free bushing 8 and the housing 10 are an interference fit. The diameter of the top cover 7 is larger than the diameter of the opening, and the spring is compressed and encapsulated in the casing. The compression amount of the pressed spring multiplied by the spring stiffness is the overload protection force value. The casing 10 and the top cover 7 and the upper cover 3 form a cavity, and the rolling support assembly is arranged on the top cover 7 and located in the cavity.

柔性铰链组件1包括穿过上盖3的开口的柔性铰链,及连接在柔性铰链底部的移动板。具体地,开口的直径大于柔性铰链位于开口部分的直径,移动板位于滚珠支撑组件6上且容纳在腔体内,腔体的宽度大于移动板的长度,移动板可在腔体内沿横向左右平移。具体地,腔体的宽度与移动板的长度差值为移动板的横向移动范围,即为柔性铰链组件1的横向移动范围。The flexible hinge assembly 1 includes a flexible hinge passing through the opening of the upper cover 3, and a moving plate connected to the bottom of the flexible hinge. Specifically, the diameter of the opening is greater than the diameter of the flexible hinge at the opening, the moving plate is located on the ball support assembly 6 and is accommodated in the cavity, the width of the cavity is greater than the length of the moving plate, and the moving plate can translate laterally in the cavity. Specifically, the difference between the width of the cavity and the length of the moving plate is the lateral movement range of the moving plate, that is, the lateral movement range of the flexible hinge assembly 1 .

具体地,滚动支撑组件包括上下设置第一滚动支撑组件和第二滚动支撑组件,第一滚动支撑组件和第二滚动支撑组件均包括支撑架6和设置在支撑架6上的滚珠组5,滚珠组5的多个滚珠均匀分布在支撑架6上。更进一步地,移动板设置在第一滚动支撑组件和第二滚动支撑组件之间。移动板的下表面与第二滚动支撑组件的上的滚珠组5相接触。柔性铰链将第一滚动支撑组件分隔呈左右两个部分,移动板的上表面与第一滚动支撑组件的滚珠组5相接触。移动板左右移动时,通过滚珠组5带动,从而可以在横向方向移动。上盖3与第一滚动支撑组件之间从下至上依次设有上挡环4、碟形弹簧2,柔性铰链穿设在上挡环4和碟形弹簧2中。上挡环4起到隔离的作用,防止碟形弹簧2直接卡在滚珠组5上,限制滚珠组5在支撑架6的上的滚珠上。Specifically, the rolling support assembly includes a first rolling support assembly and a second rolling support assembly arranged up and down. Both the first rolling support assembly and the second rolling support assembly include a support frame 6 and a ball group 5 arranged on the support frame 6. The balls The plurality of balls of the group 5 are evenly distributed on the support frame 6 . Further, the moving plate is disposed between the first rolling support assembly and the second rolling support assembly. The lower surface of the moving plate is in contact with the upper ball group 5 of the second rolling support assembly. The flexible hinge divides the first rolling support assembly into two parts, left and right, and the upper surface of the moving plate is in contact with the ball group 5 of the first rolling support assembly. When the moving plate moves left and right, it is driven by the ball group 5, so that it can move in the lateral direction. An upper stop ring 4 and a disc spring 2 are arranged between the upper cover 3 and the first rolling support assembly from bottom to top in sequence, and the flexible hinge passes through the upper stop ring 4 and the disc spring 2 . The upper retaining ring 4 plays a role of isolation, preventing the disc spring 2 from being directly stuck on the ball group 5, and restricting the ball group 5 from being on the balls on the support frame 6.

上述解耦装置的尺寸关系如图3所示,设顶盖7的直径为a1,外壳10的由上至下的内孔值为b1、b2,上盖3由上至下的内孔值分别为c1、c2,柔性铰链组件1的移动板的长度为d1。需要满足的条件是顶盖7的直径a1>c1,使得弹簧9压缩封装入外壳10,所压入的弹簧压缩量乘以弹簧刚度即为过载保护力值。压缩量可由外壳10尺寸L控制。柔性铰链组件1移动板的长度d1<b1,d1和b1差值的一半为柔性铰链组件1横向移动(左右平移)范围。上挡环4、支撑架6与上盖3内孔c2为过盈配合,使得上挡环4和支撑架在外壳10内部侧向方向固定。The dimensional relationship of the above-mentioned decoupling device is shown in FIG. 3 . Let the diameter of the top cover 7 be a1, the inner hole values of the casing 10 from top to bottom are b1 and b2, and the inner hole values of the upper cover 3 from top to bottom are respectively are c1 and c2, and the length of the moving plate of the flexible hinge assembly 1 is d1. The condition to be satisfied is that the diameter of the top cover 7 is a1>c1, so that the spring 9 is compressed and encapsulated into the housing 10, and the compression amount of the pressed spring multiplied by the spring stiffness is the overload protection force value. The amount of compression can be controlled by the housing 10 dimension L. The length d1 < b1 of the moving plate of the flexible hinge assembly 1 , and half of the difference between d1 and b1 is the lateral movement (left and right translation) range of the flexible hinge assembly 1 . The upper baffle ring 4 , the support frame 6 and the inner hole c2 of the upper cover 3 are in an interference fit, so that the upper baffle ring 4 and the support frame are fixed in the lateral direction inside the casing 10 .

上述解耦装置的装配方法为:首先将无油衬套8装入外壳10,再将顶盖7与弹簧9从外壳10下方放入,并将底盖11用螺纹连接于外壳10。此时压入弹簧的压缩量乘以弹簧的刚度就是过载保护值。在顶盖7上方依次为第二滚动支撑组件、柔性铰链组件1、第一滚动支撑组件、上挡环4、碟形弹簧2,最后用上盖3螺纹连接与外壳10。此时碟形弹簧2用于将滚动支撑组件、柔性铰链组件1、滚动支撑组件压紧。如图2所示,其作用原理为正常情况下,解耦装置支撑主镜,当主镜需要横向移动时,柔性铰链组件1可以沿着横向移动,移动距离由柔性铰链组件1与外壳10的间隙决定,柔性铰链组件1利用弹性变形解耦主镜受到的弯矩。当主镜受到地震风载等过大外部载荷即超过弹簧预压保护值时,主镜可随柔性铰链组件1向下运动,落入安全防护中。The assembling method of the decoupling device is as follows: firstly, the oil-free bushing 8 is installed into the housing 10 , then the top cover 7 and the spring 9 are put in from below the housing 10 , and the bottom cover 11 is screwed to the housing 10 . At this time, the compression amount of the pressed spring multiplied by the stiffness of the spring is the overload protection value. Above the top cover 7 are the second rolling support assembly, the flexible hinge assembly 1, the first rolling support assembly, the upper stop ring 4, the disc spring 2, and finally the upper cover 3 is screwed to the housing 10. At this time, the disc spring 2 is used to compress the rolling support assembly, the flexible hinge assembly 1 and the rolling support assembly. As shown in Figure 2, the principle of action is that under normal circumstances, the decoupling device supports the main mirror. When the main mirror needs to move laterally, the flexible hinge assembly 1 can move along the lateral direction, and the moving distance is determined by the gap between the flexible hinge assembly 1 and the housing 10. It is determined that the flexible hinge assembly 1 utilizes elastic deformation to decouple the bending moment received by the primary mirror. When the main mirror is subjected to excessive external loads such as earthquake and wind load, that is, the spring preload protection value is exceeded, the main mirror can move downward with the flexible hinge assembly 1 and fall into the safety protection.

其相对于现有技术,本发明提供的一种用于大视场望远镜的解耦装置,适用于望远镜中需要主镜具有较大横向位移的情况,同时兼容过载保护功能。此外,与传统单纯柔性杆支撑相比,利用滚珠组使得主镜的横向位移不单单依靠柔性杆的柔性,可以缩短主镜支撑机构高度,使得整个机构更加紧凑。其过载保护功能,使主镜在受到地震风载等过大外部载荷时,使主镜支撑部分变成由刚体变成弹性体,避免主镜受到过大应力,并且这个过载保护值可随需求设定。Compared with the prior art, the present invention provides a decoupling device for a telescope with a large field of view, which is suitable for the situation that the primary mirror in the telescope needs to have a large lateral displacement, and is compatible with the overload protection function. In addition, compared with the traditional simple flexible rod support, the use of the ball group makes the lateral displacement of the main mirror not only depends on the flexibility of the flexible rod, but also shortens the height of the main mirror support mechanism, making the entire mechanism more compact. Its overload protection function enables the main mirror to change from a rigid body to an elastic body when the main mirror is subjected to excessive external loads such as seismic wind loads, so as to avoid excessive stress on the main mirror, and the overload protection value can be adjusted according to the needs. set up.

以上仅为本发明的实施方式,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。The above are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, All are similarly included in the scope of patent protection of the present invention.

Claims (5)

1.一种用于大视场望远镜的解耦装置,其特征在于,包括:1. a decoupling device for a large field of view telescope, is characterized in that, comprising: 壳体,所述壳体内收容有弹性件,所述弹性件的顶部设有顶盖,所述顶盖与壳体形成一腔体;壳体的顶部开设有开口;a casing, an elastic piece is accommodated in the casing, a top cover is provided on the top of the elastic piece, and the top cover and the casing form a cavity; the top of the casing is provided with an opening; 滚动支撑组件,设置在所述顶盖的上方且位于腔体内,所述滚动支撑组件包括支撑架及设置在支撑架内滚珠组;a rolling support assembly, disposed above the top cover and located in the cavity, the rolling support assembly includes a support frame and a ball group arranged in the support frame; 柔性铰链组件,用于支撑主镜,包括柔性铰链及连接在柔性铰链底部的移动板,所述柔性铰链穿过壳体的开口,所述移动板设置在滚动支撑组件上,腔体的宽度大于移动板的长度,所述移动板可在腔体内左右平移;A flexible hinge assembly for supporting the main mirror, including a flexible hinge and a moving plate connected at the bottom of the flexible hinge, the flexible hinge passes through the opening of the casing, the moving plate is arranged on the rolling support assembly, and the width of the cavity is greater than the length of the moving plate, which can translate left and right in the cavity; 所述滚动支撑组件包括上下设置第一滚动支撑组件和第二滚动支撑组件,所述移动板设置在第一滚动支撑组件和第二滚动支撑组件之间;所述壳体内设有无油衬套,所述弹性件设置在无油衬套内且与无油衬套间隙配合,无油衬套与壳体过盈配合;所述弹性件为弹簧,所述壳体的底部设有凸起,所述凸起与弹簧底部的内孔配合;所述顶盖的直径大于开口的直径,弹簧压缩封装在壳体内,所压入弹簧压缩量乘以弹簧刚度即为过载保护力值,压缩量根据无油衬套的高度确定。The rolling support assembly includes a first rolling support assembly and a second rolling support assembly arranged up and down, the moving plate is disposed between the first rolling support assembly and the second rolling support assembly; an oil-free bushing is arranged in the housing , the elastic member is arranged in the oil-free bushing and is in clearance fit with the oil-free bushing, and the oil-free bushing and the casing are in interference fit; the elastic member is a spring, and the bottom of the casing is provided with a protrusion, The protrusion is matched with the inner hole of the bottom of the spring; the diameter of the top cover is larger than the diameter of the opening, the spring is compressed and encapsulated in the casing, and the compression amount of the pressed spring multiplied by the spring stiffness is the overload protection force value. The height of the oil-free bushing is determined. 2.根据权利要求1所述的用于大视场望远镜的解耦装置,其特征在于,所述壳体包括外壳,及分别设置外壳两端的上盖和底盖,所述上盖与第一滚动支撑组件之间从下至上依次设有上挡环和碟形弹簧,所述柔性铰链穿设在上挡环和碟形弹簧中。2 . The decoupling device for a large field of view telescope according to claim 1 , wherein the housing comprises an outer shell, and an upper cover and a bottom cover respectively provided with both ends of the outer shell, the upper cover and the first An upper baffle ring and a disc spring are sequentially arranged between the rolling support assemblies from bottom to top, and the flexible hinge is penetrated through the upper baffle ring and the disc spring. 3.根据权利要求2所述的用于大视场望远镜的解耦装置,其特征在于,所述上挡环和第一滚动支撑组件均与上盖形成的内孔壁过盈配合,使得上挡环和第一滚动支撑组件在壳体内部横向方向固定。3. The decoupling device for a large field of view telescope according to claim 2, wherein the upper retaining ring and the first rolling support assembly are interference fit with the inner hole wall formed by the upper cover, so that the upper The retaining ring and the first rolling support assembly are fixed in the lateral direction inside the housing. 4.根据权利要求1所述的用于大视场望远镜的解耦装置,其特征在于,所述壳体包括外壳,及分别设置外壳两端的上盖和底盖,上盖和底盖均与外壳螺纹连接。4. The decoupling device for a large field of view telescope according to claim 1, wherein the housing comprises an outer shell, and an upper cover and a bottom cover respectively provided with both ends of the outer shell, the upper cover and the bottom cover are Shell threaded connection. 5.根据权利要求1所述的用于大视场望远镜的解耦装置,其特征在于,所述滚珠组的多个滚珠均匀分布在支撑架上。5 . The decoupling device for a large field of view telescope according to claim 1 , wherein the plurality of balls of the ball group are evenly distributed on the support frame. 6 .
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