A large antenna with a combined seismic isolation and shock absorption structure

Abstract

The present invention discloses a large antenna with a combined seismic isolation and shock absorption structure, belonging to the field of antenna technology. The structure includes a reflector, a seat frame, a cable, a cable power device, an upper shock absorption structure, a middle shock absorption structure and a lower shock absorption structure. The present invention is stable when there is no earthquake and does not affect the precise operation of the antenna, while it can effectively play the role of seismic isolation and shock absorption during an earthquake, and has the advantages of light weight, low cost, easy installation and replacement, etc.

Description

Technical Field

[0001] The invention relates to the technical field of antennas, and in particular to a large antenna with a combined vibration isolation and shock absorption structure. Background Art

[0002] With the rapid development of social science and technology, radio astronomy has entered the era of high sensitivity and large samples, in which large radio telescope antennas play an important role. Human beings' increasingly in-depth and urgent desire to explore space has also further driven the demand for the construction of large radio telescope antennas, especially large fully movable reflector telescope antennas with an aperture of about 50 meters or even more than 100 meters.

[0003] Generally speaking, the main structure of such a large antenna consists of two parts, namely the mount and the reflector. The reflector is the functional part of the antenna. The reflector carries a huge reflective surface to receive electromagnetic wave signals from deep space. It not only has a more complex structure, but also requires a number of expensive and sophisticated equipment, which is the main contradiction of the antenna. The mount is a steel structure supporting subordinate part with a relatively simple structure. Its function is to support and drive the reflector to move in pitch and azimuth.

[0004] Over the past few decades, humans have built more and more large telescope antennas, but their forms are basically the same and rarely innovative. For example, the 65-meter Tianma Telescope built in Shanghai, the 66-meter deep space exploration antenna built in Jiamusi, the 70-caliber antenna built in Tianjin, and the 120-meter antenna under construction in Yunnan, etc. This traditional large antenna structure is characterized by high height, huge weight and volume. The reflector part is connected to the mount only through two pitch axis positions. This form hardly considers the damage to the antenna structure caused by earthquakes from the perspective of structural design, and no active shock reduction measures are taken. In addition, the construction site selection of large telescope antennas generally mainly pursues a pure electromagnetic environment away from modern human life, as well as the need for large spans of network observations between several large antennas, rather than considering the impact of earthquakes. Therefore, in addition to some large antennas that have been built, some unbuilt equipment may also be built in seismic zones, which poses a risk of earthquake damage. If an earthquake occurs, large antennas with huge height, weight and volume will directly bear the impact and vibration brought by seismic waves, and are prone to deformation, damage and collapse, with disastrous consequences.

[0005] In recent years, the seismic isolation and shock reduction technology for dealing with earthquake disasters in China has made great progress and has been increasingly widely promoted and applied to many high-rise buildings and large equipment. Among them, seismic isolation rubber bearings are widely used. This type of bearing mainly includes a sandwich structure in which steel plates and rubber are tightly combined with each other. It not only has a high vertical bearing capacity, but also has a large horizontal deformation capacity and the ability to withstand repeated load fatigue. In actual engineering applications, a flexible seismic isolation layer is added between the superstructure and the foundation, and rubber seismic isolation bearings are installed to play a role of flexible connection with the foundation. When an earthquake occurs, most of the energy generated is absorbed by the flexible seismic isolation layer during the process of transmitting to the upper structure, and only a small part is transmitted to the upper structure. It is understood that through such technology, about 80% of the earthquake damage energy can be offset, thereby effectively reducing the earthquake damage to the superstructure and improving the safety of the superstructure.

[0006] Therefore, combining the characteristics of large antenna structures and rubber seismic isolation supports, it is necessary to develop a main structure of a large antenna with active seismic isolation and shock absorption functions. The new structure is stable when there is no earthquake and does not affect the precise operation of the antenna, while it can effectively play a role in seismic isolation and shock absorption during an earthquake. Summary of the invention

[0007] In view of this, the present invention provides a large antenna with a combined seismic isolation and shock absorption structure. The main structure of the antenna is stable when there is no earthquake and does not affect the precise operation of the antenna. During an earthquake, it can effectively play the role of seismic isolation and shock absorption. It also has the advantages of light weight, low cost, and easy installation and replacement.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A large antenna with a combined seismic isolation and shock absorbing structure comprises a reflector, a seat frame carrying the reflector and an azimuth rotation structure, and also comprises an upper shock absorbing structure, a middle shock absorbing structure and a foundation shock absorbing structure; the azimuth rotation structure comprises a foundation and a roller frame, and an annular steel rail is arranged on the foundation; a roller moving on the annular steel rail is arranged at the bottom of the roller frame, and the roller drives the roller frame to make a circular motion on the annular steel rail; the upper shock absorbing structure is located between the reflector and the seat frame, the middle shock absorbing structure is located between the roller frame and the seat frame, and the foundation shock absorbing structure is located at the bottom of the foundation.

[0010] Furthermore, the azimuth rotation structure also includes a damper corresponding to the rollers one by one; two ends of the damper are respectively connected to the rotating shaft of the roller and the bottom of the roller frame.

[0011] Furthermore, the damper is a steel damper, a mild steel shear damper or a hydraulic viscous damper.

[0012] Furthermore, the upper shock-absorbing structure, the middle shock-absorbing structure and the foundation shock-absorbing structure are respectively friction pendulum shock-absorbing structures, rubber seismic isolation structures or any combination of friction pendulum shock-absorbing structures and rubber seismic isolation structures.

[0013] Furthermore, the friction pendulum shock absorbing structure is a simple pendulum structure or a compound pendulum structure.

[0014] Furthermore, the friction pendulum shock-absorbing structure includes an upper seat plate, a shock-absorbing pendulum and a lower seat plate which are arranged in sequence from top to bottom; the bottom surface of the upper seat plate and the bottom surface of the shock-absorbing pendulum are both smooth convex surfaces, the top surface of the shock-absorbing pendulum and the top surface of the lower seat plate are both smooth concave surfaces, and the smooth concave surfaces and the smooth convex surfaces correspond to each other one by one; a seismic isolation block is also provided on the top of the lower seat plate, and the seismic isolation block and the lower seat plate are fixed by a shear pin perpendicular to the two; the shock-absorbing pendulum is located in the area formed by the seismic isolation block, and the shock-absorbing pendulum and the seismic isolation block are in close contact; the edge of the top of the lower seat plate is provided with a limiting wall for constraining the horizontal movement of the upper seat plate.

[0015] Furthermore, the rubber seismic isolation structure includes an upper plate and a lower plate, the upper plate and the lower plate are parallel to each other, and a lead core column perpendicular to the upper plate and the lower plate is provided between the upper plate and the lower plate, and a rubber-steel plate spacer layer is sleeved on the outer wall of the lead core column; the rubber-steel plate spacer layer is a rubber layer and a steel plate layer stacked in sequence, and the lead core column is perpendicular to the rubber layer and the steel plate layer; the upper plate is supported simultaneously by the lead core column and the rubber-steel plate spacer layer; the edge of the lower plate is also provided with a vertical limit seat, and there is a space margin between the limit seat and the rubber-steel plate spacer layer.

[0016] The beneficial effects of the above technical solution of the present invention are:

[0017] 1. The present invention arranges specific shock-absorbing and vibration-isolating structures between the reflector and the frame and between the frame and the foundation, respectively, which play a good role in vibration isolation and vibration reduction for the antenna structure, especially the reflector part.

[0018] 2. The present invention limits the rubber steel plate spacing layer through the lateral limiting seat, so that it has the maximum lateral deformation, which can avoid overturning caused by the center deviating too much from the support.

[0019] 3. The structure of the present invention is simple and reliable, and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of the rubber seismic isolation structure in an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the friction pendulum damping structure in an embodiment of the present invention

[0023] Figure 4 It is a schematic diagram of the structure of a large antenna used in an embodiment of the present invention.

[0024] Figure 5 yes Figure 4 Schematic diagram of the stabilizing cable structure.

[0025] Figure 6 yes Figure 4 Schematic diagram of the cable power device structure.

[0026] Figure 7 yes Figure 4 Schematic diagram of the pitch accuracy control structure.

[0027] Figure 8 yes Figure 4 Schematic diagram of the pitch limit structure.

[0028] In the figure: 1, seat frame, 1.1, roller, 1.2, shaft seat, 2, reflector, 3, cable, 3.1, cable power device, 3.2, cable force structure, 3.1.1, motor reducer combination, 3.1.2, winch drum, 3.1.4, tension sensor, 3.1.5, terminal, 4, foundation, 4.1, circular rail, 5, cable stabilizing structure, 5.1, pulley, 5.2, tension sensor, 5.3, terminal, 5.4, elastic component, 6, pitch accuracy control structure, 6.1, meshing gear, 6.2, small fan gear, 6.3, ring Code disk, 7, pitch limit structure, 7.1, main steel frame, 7.2, buffer platform, 7.3, buffer unit, 7.4, locking mechanism, 8, lead core, 9, rubber steel plate spacer, 10, upper plate, 11, wrapping layer, 12, limit seat, 13, lower plate, 8.1, upper seat plate, 8.2, lower seat plate, 8.3, shock-absorbing pendulum, 8.4, shock-absorbing slide plate, 8.5, seismic isolation block, 8.6, shear pin, 8.7, limit wall, 14, upper shock-absorbing structure, 15, middle shock-absorbing structure, 16, lower shock-absorbing structure, 17, roller frame. DETAILED DESCRIPTION

[0029] The following specific embodiments are used to further illustrate the content of the present invention. Of course, the following specific embodiments are only used to illustrate the content of different aspects of the present invention, and should not be understood as limiting the scope of the present invention.

[0030] A large antenna with a combined seismic isolation and shock absorbing structure comprises a reflector, a seat frame carrying the reflector and an azimuth rotation structure, and also comprises an upper shock absorbing structure, a middle shock absorbing structure and a foundation shock absorbing structure; the azimuth rotation structure comprises a foundation and a roller frame, and an annular steel rail is arranged on the foundation; a roller moving on the annular steel rail is arranged at the bottom of the roller frame, and the roller drives the roller frame to make a circular motion on the annular steel rail; the upper shock absorbing structure is located between the reflector and the seat frame, the middle shock absorbing structure is located between the roller frame and the seat frame, and the foundation shock absorbing structure is located at the bottom of the foundation.

[0031] Furthermore, the azimuth rotation structure also includes a damper corresponding to the rollers one by one; two ends of the damper are respectively connected to the rotating shaft of the roller and the bottom of the roller frame.

[0032] Furthermore, the damper is a steel damper, a mild steel shear damper or a hydraulic viscous damper.

[0033] Furthermore, the upper shock-absorbing structure, the middle shock-absorbing structure and the foundation shock-absorbing structure are respectively friction pendulum shock-absorbing structures, rubber seismic isolation structures or any combination of friction pendulum shock-absorbing structures and rubber seismic isolation structures.

[0034] Furthermore, the friction pendulum shock absorbing structure is a simple pendulum structure or a compound pendulum structure.

[0035] Furthermore, the friction pendulum shock-absorbing structure includes an upper seat plate, a shock-absorbing pendulum and a lower seat plate which are arranged in sequence from top to bottom; the bottom surface of the upper seat plate and the bottom surface of the shock-absorbing pendulum are both smooth convex surfaces, the top surface of the shock-absorbing pendulum and the top surface of the lower seat plate are both smooth concave surfaces, and the smooth concave surfaces and the smooth convex surfaces correspond to each other one by one; a seismic isolation block is also provided on the top of the lower seat plate, and the seismic isolation block and the lower seat plate are fixed by a shear pin perpendicular to the two; the shock-absorbing pendulum is located in the area formed by the seismic isolation block, and the shock-absorbing pendulum and the seismic isolation block are in close contact; the edge of the top of the lower seat plate is provided with a limiting wall for constraining the horizontal movement of the upper seat plate.

[0036] Furthermore, the rubber seismic isolation structure includes an upper plate and a lower plate, the upper plate and the lower plate are parallel to each other, and a lead core column perpendicular to the upper plate and the lower plate is provided between the upper plate and the lower plate, and a rubber-steel plate spacer layer is sleeved on the outer wall of the lead core column; the rubber-steel plate spacer layer is a rubber layer and a steel plate layer stacked in sequence, and the lead core column is perpendicular to the rubber layer and the steel plate layer; the upper plate is supported simultaneously by the lead core column and the rubber-steel plate spacer layer; the edge of the lower plate is also provided with a vertical limit seat, and there is a space margin between the limit seat and the rubber-steel plate spacer layer.

[0037] The following is a specific embodiment:

[0038] like Figures 4 to 8As shown in the figure, a large radio telescope with bidirectional cable drive and pitch motion is used. It has the characteristics of compact structure, high reliability, low cost and easy maintenance.

[0039] This embodiment mainly includes a seat frame 1, a reflector 2, a cable 3 and a cable driving device.

[0040] The seat frame is a large-scale spatial steel skeleton structure. A group of rollers 1.1 are arranged at the bottom to realize the azimuth rotation function of the seat frame; two pitch axis seats 1.2 are arranged at the top to support the reflector and cooperate to realize the pitch rotation of the reflector relative to the pitch axis (which can be regarded as the line connecting the two pitch axis seats).

[0041] The reflector includes a reflecting surface and a space grid supporting the reflecting surface. The reflector is mounted on a frame and has the freedom of rotation. A pitch axis mechanism is arranged at its lower part. The mechanism is connected with the pitch axis seat of the frame so that the reflector has the freedom of rotation relative to the frame along the pitch axis.

[0042] The reflector and the mount structure are arranged in a bidirectional symmetric form, that is, when the reflector points vertically upward, the main structure of the telescope is symmetrical along the pitch axis and perpendicular to the pitch axis. The line connecting the two pitch axis seats on the mount (the pitch axis) is parallel to the earth; the optical axis of the reflector is perpendicular to and intersects the pitch axis, and the pitch axis is also perpendicular to and intersects the azimuth axis. This symmetrical structure enables the reflector to have a rotational motion capability with a considerable degree of bilateral symmetry relative to the mount along the pitch axis.

[0043] The cable drive device mainly includes a cable power device 3.1 and a cable force structure 3.2. The cable drive device realizes the pitching motion purpose of the reflector rotating to the same extent on both sides of the pitch axis. The cable power device is symmetrically arranged on both sides of the bottom of the frame. The cable power device adopts a motor servo winch structure, which mainly includes a motor reducer combination 3.1.1, a winch drum 3.1.2, a cable 3 wound on the winch drum, a tension sensor 3.1.4 and a terminal 3.1.5. The motor reducer combination drives the winch drum to rotate in the forward and reverse directions, thereby driving the cable wound on the winch drum to extend or shorten. The tension sensor is used to monitor whether the tension of the cable is uniform and within a reasonable range. Corresponding to the cable power device on the frame, the cable force structure is arranged at the lower part of the reflector, and is also symmetrically distributed on both sides. The cable power device and the cable force structure are connected by a cable.

[0044] The cables are arranged in one or more numbers. The multiple cables correspond to more than one cable driving device. A safety cable is arranged among the multiple cables, which does not mainly provide tension in normal use of the telescope, but plays a role in special circumstances such as the breakage of other cables, so as to ensure that the reflector can safely fall back to a stable posture in extreme circumstances.

[0045] Furthermore, it also includes a foundation 4, on which a circular steel rail 4.1 is provided, corresponding to the roller mechanism at the bottom of the seat frame, so as to realize the rotary motion of the seat frame on the circular steel rail.

[0046] Furthermore, it also includes a cable stabilizing structure 5. The cable stabilizing structure is installed on the seat frame, and is connected to the cable by the pulley 5.1 assembly at the protruding end. The cable and the protruding end are in contact through the pulley, and the position is not fixed. The cable stabilizing mechanism is provided with a tension sensor 5.2 for tension and extension length and a terminal 5.3 connected to the sensor for the protruding end, so as to adjust the uniformity of the tension of each cable in real time. For the case of multiple cables, it also has an elastic component. Its structure is similar to the constraint between high-altitude high-voltage wires, and is used to limit the position and distance between multiple cables near a cross section. Since the relative angles and distances between multiple cables will change during the pitching movement, elastic components 5.4 such as springs are used to adjust between different constraint points. The function of the cable stabilizing structure is to overcome adverse conditions such as abnormal shaking and vibration of the cable that may occur in strong winds, equipment vibrations, etc.

[0047] Furthermore, it also includes a pitch precision control structure 6, which is a small fan gear mechanism, mainly including a meshing gear 6.1 and a small fan gear 6.2. The small fan gear is reversely installed at the bottom of the reflector, passing through and coaxial with the pitch axis; the meshing gear is installed on the seat frame and meshes with the small fan gear, and the torque is provided by the motor reducer combination or the damping motor. During the pitch movement of the reflector, the cable drive device generates a huge pulling force to rotate the reflector along the pitch axis, and at the same time the small fan gear mechanism generates a certain reverse counter torque. Through this matching of one positive and one negative torque, the precise control of the pitch angle of the reflector is assisted, making the pitch movement of the reflector more stable. At the same time, the mechanism can also assist in the output of rotation data. For example, the annular code disk 6.3 fixed on the small fan gear can also play a certain braking role, so as to be used for locking the pitch attitude of the reflector.

[0048] In terms of motion properties, the pitch precision control structure is rigid compared to the cable drive, while the latter is flexible. In terms of motion contribution, the two are respectively equivalent to a "scholar" and a "strongman". The main driving force during the pitch motion is provided by the cable drive, and when the cable drive's precision control capability is insufficient, the pitch precision control mechanism plays a role.

[0049] The pitch precision control mechanism may also be a hydraulic or lead screw or other precisely controllable servo control mechanism.

[0050] Furthermore, it also includes a pitch limit structure 7. There are two pitch limit structures, which are symmetrically installed on both sides of the frame, corresponding to the pitch angle limits respectively. The pitch limit structure mainly includes a main steel frame 7.1, a buffer platform 7.2, a buffer unit 7.3, a locking mechanism 7.4 and other parts. The contact platform is located at the protruding end of the main steel frame, and the buffer unit and the locking mechanism are respectively installed on the contact platform. When the pitch movement is about to reach the limit position, the predetermined protruding position of the reflector will first contact the buffer mechanism of the pitch limit device, and reach the limit position and stop moving after its impact force and speed are buffered. At this time, the locking mechanism can effectively lock the reflector with strong force.

[0051] In this example, the reflector is vertically facing the sky as 0°, and the pitch movement of about ±85° can be achieved.

[0052] When the telescope is observing the sky, the roller mechanism on the mount rotates on the circular steel rail on the foundation, realizing the azimuth movement of the entire telescope; the cable drive device and various auxiliary mechanisms realize the pitch movement of the reflector. Both azimuth and pitch movements have functions such as acceleration, deceleration, positioning, and braking. The two movements cooperate with each other to achieve the precise pointing of the reflector.

[0053] The pitch movement is completed by the cable drive devices on both sides. The winch drum of the cable drive device on one side retracts the cable while the other side releases the cable, realizing the upward movement of the reflector, and the reverse movement realizes the downward posture of the reflector. In the extreme case of pitch movement, the reflector is located at the lowest angle on both sides of the mount, and the corresponding pitch limit device on each side ensures the safety of the telescope antenna at the extreme angle.

[0054] Reference Figures 1 to 3 The rubber seismic isolation structure includes an upper plate 10 and a lower plate 13, the upper plate and the lower plate are parallel to each other, and a lead column perpendicular to the upper plate and the lower plate is provided between the upper plate and the lower plate, and a rubber-steel plate spacer layer is sleeved on the outer wall of the lead column; the rubber-steel plate spacer layer is a rubber layer and a steel plate layer stacked in sequence, and the lead column is perpendicular to the rubber layer and the steel plate layer; the upper plate is supported by the lead column and the rubber-steel plate spacer layer at the same time; a vertical limit seat is also provided at the edge of the lower plate, and there is a space margin between the limit seat 12 and the rubber-steel plate spacer layer 9.

[0055] In this embodiment, the reflector 1 is connected to two pitch axis seats. The bottom of the pitch axis seats is respectively connected to the first rubber isolation structure, which is the upper shock absorbing structure. The first rubber isolation structure is installed on the top of the frame; the azimuth rotation structure is placed on the foundation track and can rotate on it. The frame is connected above the azimuth rotation structure, and a friction pendulum shock absorbing structure is arranged between the two, which is the middle shock absorbing structure.

[0056] Figure 3In the embodiment, the friction pendulum shock absorbing structure includes an upper seat plate, a shock absorbing pendulum and a lower seat plate which are arranged in sequence from top to bottom; the bottom surface of the upper seat plate and the bottom surface of the shock absorbing pendulum are both smooth convex surfaces, the top surface of the shock absorbing pendulum and the top surface of the lower seat plate are both smooth concave surfaces, and the smooth concave surfaces and the smooth convex surfaces correspond to each other one by one; a seismic isolation block is also provided on the top of the lower seat plate, and the seismic isolation block and the lower seat plate are fixed by a shear pin 8.6 which is perpendicular to both of them; the shock absorbing pendulum is located in the area formed by the seismic isolation block, and the shock absorbing pendulum and the seismic isolation block are in close contact; a limiting wall for constraining the horizontal movement of the upper seat plate is provided on the edge of the top of the lower seat plate. The maximum height of the seismic isolation block is lower than the height of the limiting wall, and the top of the upper seat plate is higher than the limiting wall; a downward extension is provided on the side of the upper seat plate, and the extension is located in the area formed by the limiting wall, and its outward movement tendency is constrained by the limiting wall.

[0057] A damping slide plate 8.4 for reducing friction is provided between the upper seat plate 8.1 and the damping pendulum 8.3 and between the damping pendulum and the lower seat plate 8.2.

[0058] The roller damper arranged between the roller system and the azimuth turntable sideways may be in the form of a steel damper, a soft steel shear damper or a hydraulic viscous damper.

[0059] The limit seat is fixed on the outside of the lower seat plate and extends upward to a certain height, presenting a semi-open structure. The limit seat can predict the maximum displacement direction according to the overall characteristics of the structure, and increase the thickness and distance in this direction or take other measures to improve the ability to resist earthquake impact in this direction.

[0060] Figure 2 The main components of the scissor lift are the upper plate, the lower plate, the lead core, the rubber steel plate spacer, the external wrapping layer, the limit seat, etc. The limit seat is fixed on the outside of the lower plate and extends upward to a certain height, presenting a semi-open structure. The limit seat can predict the maximum displacement direction according to the overall characteristics of the structure, and increase the thickness and distance in this direction or take other measures to improve the ability to resist earthquake impact in this direction.

[0061] A second rubber seismic isolation structure is provided at the bottom of the foundation.

[0062] In general, compared with the existing large telescope antenna, the main difference of the structure provided by the patent of the present invention is that the traditional mount is split into two parts: the pitch mount and the azimuth turntable, and the structure of the pitch motion is driven by a cable. At the same time, shock-absorbing and seismic isolation mechanisms are respectively set between the pitch axis seat and the pitch mount, between the pitch mount and the azimuth turntable, and between the azimuth turntable and the roller system. In addition, a roller damper is set on the side where the roller system is connected to the azimuth turntable.

[0063] When there is no earthquake or the earthquake is minor, each shock-absorbing transition section and shock-absorbing mechanism is equivalent to a rigid support and does not affect the normal use of the antenna. When the earthquake is major, each shock-absorbing transition section and shock-absorbing mechanism will play a good role in isolation and shock absorption, thereby fully protecting the antenna structure, especially the reflector part.

[0064] When there is no earthquake or the earthquake is minor, the rubber seismic isolation structure is only equivalent to a fixed support transition section and does not affect the normal use of the antenna.

[0065] When a large earthquake occurs, the rubber isolation structure begins to work to consume the energy generated by the earthquake. The lateral limit seat in the rubber isolation support is used to limit the maximum lateral deformation of the rubber steel plate spacing layer to avoid the possibility of overturning caused by excessive deviation of the center of gravity.

[0066] In general, compared with the traditional large telescope antenna, the main structure provided in this embodiment mainly divides the original frame into two parts: the azimuth rotation structure and the frame, and sets a rubber seismic isolation structure with a specific structure between the two. At the same time, a rubber seismic isolation structure with a specific structure is also added between the reflector and the frame.

[0067] The rubber isolation structure provides effective isolation and shock-absorbing protection to the overall antenna structure, especially the reflector part that performs the telescope function, to a certain extent, and has the characteristics of low cost and easy installation and maintenance.

[0068] It should be understood that the above description of the specific implementation methods of this patent is only an exemplary description listed to facilitate ordinary technicians in the field to understand the patent scheme, and does not imply that the scope of protection of this patent is limited to these individual examples. Ordinary technicians in this field can fully understand the technical scheme of this patent and, without any creative work, obtain more specific implementation methods by combining technical features, replacing some technical features, adding more technical features, etc. to the examples listed in this patent. All these specific implementation methods are within the scope of the claims of this patent. Therefore, these new specific implementation methods should also be within the scope of protection of this patent.

Claims

1. A large antenna with a combined seismic isolation and shock absorption structure, comprising a reflector, a mount for carrying the reflector, and an azimuth rotation structure, characterized in that: It also includes an upper shock-absorbing structure, a middle shock-absorbing structure and a foundation shock-absorbing structure; the azimuth rotation structure includes a foundation and a roller frame, and a circular steel rail is arranged on the foundation; a roller moving on the circular steel rail is arranged at the bottom of the roller frame, and the roller drives the roller frame to make a circular motion on the circular steel rail; the upper shock-absorbing structure is located between the reflector and the frame, the middle shock-absorbing structure is located between the roller frame and the frame, and the foundation shock-absorbing structure is located at the bottom of the foundation; the azimuth rotation structure also includes a damper corresponding to the roller one by one; the two ends of the damper are respectively connected to the rotating shaft of the roller and the bottom of the roller frame; the damper is a steel damper, a soft steel shear damper or a hydraulic viscous damper; the upper shock-absorbing structure, the middle shock-absorbing structure and the foundation shock-absorbing structure are friction dampers, respectively A pendulum shock-absorbing structure, a rubber shock-isolating structure, or any combination of a friction pendulum shock-absorbing structure and a rubber shock-isolating structure; the friction pendulum shock-absorbing structure is a simple pendulum structure or a compound pendulum structure; the friction pendulum shock-absorbing structure comprises an upper seat plate, a shock-absorbing pendulum and a lower seat plate which are arranged in sequence from top to bottom; the bottom surface of the upper seat plate and the bottom surface of the shock-absorbing pendulum are both smooth convex surfaces, the top surface of the shock-absorbing pendulum and the top surface of the lower seat plate are both smooth concave surfaces, and the smooth concave surfaces and the smooth convex surfaces correspond to each other one by one; a shock-absorbing stopper is also provided on the top of the lower seat plate, and the shock-absorbing stopper and the lower seat plate are fixed by a shear pin perpendicular to the two; the shock-absorbing pendulum is located in the area formed by the shock-absorbing stopper, and the shock-absorbing pendulum and the shock-absorbing stopper are in close contact; the edge of the top of the lower seat plate is provided with a limiting wall for constraining the horizontal movement of the upper seat plate.

2. A large antenna with a combined seismic isolation and shock absorption structure according to claim 1, characterized in that: The rubber seismic isolation structure includes an upper plate and a lower plate, the upper plate and the lower plate are parallel to each other, and a lead column perpendicular to the upper plate and the lower plate is provided between the upper plate and the lower plate, and a rubber-steel plate spacer layer is sleeved on the outer wall of the lead column; the rubber-steel plate spacer layer is a rubber layer and a steel plate layer stacked in sequence, and the lead column is perpendicular to the rubber layer and the steel plate layer; the upper plate is supported by the lead column and the rubber-steel plate spacer layer at the same time; the edge of the lower plate is also provided with a vertical limit seat, and there is a space margin between the limit seat and the rubber-steel plate spacer layer.

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