A detachable light weight diverging cambered compression support tool

Abstract

The application provides a detachable light divergent cambered surface compression supporting tool, which comprises a supporting rod assembly and an intermediate supporting plate, the intermediate supporting plate is provided with a clamping plate, the supporting rod assembly is connected with the clamping plate in a clamping mode, the supporting rod assembly comprises a short rod, a long rod and a pushing assembly, the short rod and the long rod are connected through the pushing assembly, the short rod is connected with the clamping plate in a clamping mode, one end of the pushing assembly is fixedly connected with the short rod, and the other end is inserted into a guide hole arranged on the long rod, and an auxiliary supporting rod is further arranged between the supporting rod assembly, and an arc-shaped pressing plate component is connected with the tail end of the long rod. The short rod, the long rod and the intermediate supporting plate are connected in a cooperative mode, the weight of the single structure of the compression assembly is reduced, the connecting process is simplified, the assembly efficiency is improved, the convenience in the disassembly process is improved, the workload in the assembly process is reduced, and the use efficiency of the tool as a whole is improved.

Description

Technical Field

[0001] This invention belongs to the field of support fixtures, and particularly relates to a detachable, lightweight, divergent arc-shaped clamping support fixture. Background Technology

[0002] When it is necessary to attach or install certain structures and parts on the inner arc of some cylindrical structures, in order to ensure that the installed parts fit tightly with the inner arc of the cylindrical structure and maintain this state for a period of time, a ring support device is used to maintain the pressure state during the actual operation of installing the parts, so as to ensure the fit between the structural parts and the cylindrical structure.

[0003] The clamping devices used in the existing technology are mostly integral structures. When clamping large cylindrical equipment, the overall weight of the clamping device is large and it needs to be hoisted into the equipment, which is complicated and inconvenient. On the other hand, the structure of the split clamping device is not stable enough, and it cannot provide a good clamping effect. At the same time, the large amount of work required to connect and assemble the parts will result in low overall equipment efficiency. Summary of the Invention

[0004] This invention provides a detachable, lightweight, divergent arc-shaped clamping support fixture, which aims to solve the problems of insufficient structural stability of the split clamping device currently used in the clamping process of internal parts of cylindrical structures, which cannot provide a good clamping effect and also cause low overall equipment efficiency due to the large amount of work involved in connecting and assembling the components.

[0005] This invention is achieved by providing a detachable, lightweight, divergent arc-shaped clamping support fixture, comprising: The support rod assembly and the intermediate support plate are provided. The intermediate support plate is a regular polygon structure and is provided with a locking plate with the same number of sides as the regular polygon. The support rod assembly is engaged with the locking plate. The support rod assembly includes a short rod, a long rod, and a pushing assembly. The short rod and the long rod are connected by the pushing assembly. The end of the short rod away from the long rod is engaged with a locking plate. One end of the pushing assembly is fixedly connected to the short rod, and the other end is inserted into a guide hole provided on the long rod. Auxiliary support rods are also provided between the support rod assemblies. Adjacent support rod assemblies are connected by auxiliary support rods. An arc-shaped pressure plate component, wherein the end of the long rod away from the short rod is connected to the arc-shaped pressure plate component.

[0006] Preferably, the jacking assembly includes a shaped rod, a screw, and a bolt. The shaped rod is disposed at one end of the screw, and the end of the screw away from the shaped rod is fixedly connected to a short rod; the bolt is assembled on the screw. The guide hole consists of an inner guide hole and an outer guide hole. The irregular rod extends into the inner guide hole, and the screw part extends into the outer guide hole. The bolt is located on the part that extends into the guide hole.

[0007] Preferably, the side wall of the card plate is provided with a limiting guide rail, and the end of the short rod near the middle support plate is provided with a card slot. The card slot is provided with a matching limiting guide groove. Under the action of the limiting guide rail and the limiting guide groove, the short rod moves centrifugally or centripetally along the card plate.

[0008] Preferably, the auxiliary support rod includes a first connecting rod, a second connecting rod, and a telescopic rod body. The first connecting rod and the second connecting rod are hinged to each other. The telescopic rod body is provided with a first deflection rod and a third deflection rod. The telescopic rod body is hinged to the first connecting rod and the second connecting rod through the first deflection rod and the third deflection rod, respectively.

[0009] Preferably, the ends of the first connecting rod and the second connecting rod are hinged to different long rods, respectively; The end of the telescopic rod away from the first connecting rod and the second connecting rod is hinged to the intermediate support plate.

[0010] Preferably, the telescopic rod includes a connecting seat, a hinge seat, a push rod, and a main rod body. The main rod body and the push rod are nested together. The connecting seat is located at one end of the main rod body, and the hinge seat is located at the end of the push rod. The first deflection rod and the third deflection rod are respectively hinged to the connecting seat, and the push rod is hinged to the intermediate support plate through the hinge seat.

[0011] Preferably, the push rod includes a rod body, a limiting ring, a spring, and a limiting plate. The main rod body has an outer port at one end away from the connecting seat, and an inner sliding groove is provided inside the main rod body. The rod body extends from the outer port into the inner sliding groove, and the limiting plate is located at the end of the rod body. The limiting plate slides inside the inner sliding groove.

[0012] Preferably, the cross-section of the inner guide hole is the same as the cross-section of the irregular rod.

[0013] Preferably, the diameter of the outer port is smaller than the diameter of the inner groove.

[0014] Preferably, the arc-shaped pressure plate component includes an arc-shaped panel, ribs, and support plates; the number of ribs is not less than three sets and they are arranged in parallel on the inner arc surface of the arc-shaped panel, and different ribs are connected by several sets of support plates.

[0015] Compared with the prior art, the embodiments of this application have the following main advantages: 1. The detachable lightweight divergent arc-shaped clamping support fixture provided by the present invention has a split structure design of short rod, long rod and intermediate support plate, which reduces the weight of the individual structure of the clamping component, and makes it easier to arrange the detachable lightweight divergent arc-shaped clamping support fixture into the corresponding equipment, reducing the need for hoisting.

[0016] 2. The detachable lightweight divergent arc-shaped clamping support tooling provided by the present invention is connected by short rods, long rods and intermediate support plates, which simplifies the connection process, improves assembly efficiency, increases the convenience of disassembly and assembly, reduces the workload in the assembly process, and improves the overall efficiency of the tooling.

[0017] 3. In the detachable lightweight divergent arc-shaped clamping support fixture provided by the present invention, the auxiliary support rod forms a three-point support structure with the adjacent support rod assembly, which enhances the connection strength between the support rod assembly and the intermediate support plate and improves the overall structural stability of the fixture; thereby allowing the arc-shaped pressure plate component to obtain a stable clamping force and enhancing the clamping effect of the part to be clamped. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a detachable lightweight divergent arc-shaped clamping support tool provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the support rod assembly of a detachable lightweight divergent arc-shaped compression support tool provided by the present invention, which is interconnected by auxiliary support rods.

[0020] Figure 3 This is a schematic diagram of the intermediate support plate structure of a detachable lightweight divergent arc-shaped compression support tool provided by the present invention.

[0021] Figure 4 This is a schematic diagram of the middle support rod assembly of a detachable lightweight divergent arc-shaped clamping support tool provided by the present invention.

[0022] Figure 5 This is a schematic diagram of the auxiliary support member structure of a detachable lightweight divergent arc-shaped compression support tool provided by the present invention.

[0023] Figure 6 This is a schematic diagram of the arc-shaped pressure plate component structure of a detachable lightweight divergent arc-shaped pressure support tooling provided by the present invention.

[0024] Figure 7 This is a side view of the arc-shaped pressure plate component of a detachable lightweight divergent arc-shaped pressure support tool provided by the present invention.

[0025] Figure 8 This is a schematic diagram of the telescopic rod structure of a detachable lightweight divergent arc-shaped compression support tool provided by the present invention.

[0026] Figure 9 This is a schematic diagram of the guide hole end face structure of a long rod of a detachable lightweight divergent arc-shaped clamping support tool provided by the present invention.

[0027] Explanation of reference numerals in the attached figures: 100. Components to be clamped; 200, Support rod assembly; 210, Short rod; 211, Slot; 220, Long rod; 221, Inner guide hole; 222, Outer hole; 223, Hinge hole; 231, Irregularly shaped rod; 232, Screw; 233, Bolt; 300. Intermediate support plate; 310. Polygonal plate; 320. Clamping plate; 330. Hinge column; 400. Auxiliary support rod; 401. First connecting rod; 402. Second connecting rod; 411. First deflecting rod; 412. Third deflecting rod; 420. Telescopic rod; 421. Connecting seat; 422. Hinge seat; 423. Push rod; 4231. Rod body; 4232. Limiting ring; 4233. Spring; 4234. Limiting plate; 424. Main rod body; 4241. Inner groove; 4242. Outer end; 500. Arc-shaped pressure plate component; 510. Arc-shaped panel; 520. Rib plate; 530. Support plate. Detailed Implementation

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] This invention provides a detachable, lightweight, divergent arc-shaped clamping support fixture, such as... Figures 1-9 As shown, the detachable lightweight divergent arc-shaped clamping support tooling includes: Support rod assembly 200 and intermediate support plate 300; the number of support rod assemblies 200 is six and they are distributed in a ring array around the intermediate support plate 300. The intermediate support plate 300 has a regular hexagonal structure and different edges of the intermediate support plate 300 correspond one-to-one with the support rod assembly 200. The support rod assembly 200 includes a short rod 210, a long rod 220 and a pushing assembly. The short rod 210 and the long rod 220 are connected by the pushing assembly. The end of the short rod 210 away from the long rod 220 is inserted into the intermediate support plate 300. An arc-shaped pressure plate component 500, the outer arc surface of which abuts against the workpiece 100 to be processed, and the end of the long rod 220 away from the short rod 210 is connected to the arc-shaped pressure plate component 500; The component to be pressed 100 typically needs to be supported against the inner arc of the cylindrical structure device. In this embodiment, the intermediate support plate 300 is arranged at the center of the cylindrical structure device. The intermediate support plate 300 is provided with six sets of clamping plates 320, which serve as force support points for the short rod 210. At the same time, the long rod 220 is connected to the arc-shaped pressure plate component 500, which contacts and connects with the inner arc of the component to be pressed 100 and provides it with support force. During assembly, the short rod 210 and the long rod 220... A pusher assembly is provided between 0 and 0. Through its own rotation, it pushes the long rod 220 away from the short rod 210, thereby extending the overall length of the support rod assembly 200. The support rod assembly 200 uses the change in length to increase the pressure on the intermediate support plate 300 and the arc-shaped pressure plate component 500. Since the intermediate support plate 300 is located at the center point of the cylindrical structure equipment, the compressive forces applied by different support rod assemblies 200 will cancel each other out. The pressure on the arc-shaped pressure plate component 500 will be applied to the part to be pressed 100 and press it against the inner wall of the cylindrical structure equipment. It should be noted that the short rod 210 described in this application has a slot 211 at one end near the middle support plate 300. The slot 211 is adapted to the card plate 320, and the short rod 210 and the middle support plate 300 are connected by a movable plug-in method. The long rod 220 has a guide hole near the short rod 210. The pushing assembly extends into the guide hole. The pushing assembly includes a shaped rod 231, a screw 232, and a bolt 233. The shaped rod 231 and the screw 232 are both inserted into the guide hole on the long rod 220. The bolt 233 rotates along the screw 232 towards one side of the long rod 220, pulling the screw 232 out of the guide hole, thereby extending the overall length of the support rod assembly 200 and increasing the supporting force on the arc-shaped pressure plate component 500 and the intermediate support plate 300. The pushing assembly and the long rod 220 are connected by a nesting method, and the pushing assembly and the long rod 220 are connected in a movable manner. The long rod 220 and the arc-shaped pressure plate component 500 are fixedly connected by bolts. During the assembly of the support fixture, firstly, the long rod 220 and the arc-shaped pressure plate component 500 are bolted together. Then, at least two sets of long rods 220 and arc-shaped pressure plate components 500 are arranged at a certain distance to form an angle. In this embodiment, the angle is 60°. The outer arc surface of the arc-shaped pressure plate component 500 is pressed onto the part to be pressed 100. Then, the short rod 210 is inserted into the end of the long rod 220 that is arranged at the angle away from the arc-shaped pressure plate component 500 through the push assembly. Subsequently, the short rod 210 is connected to the intermediate support plate 300 in sequence. At this point, the intermediate support plate 300 receives initial support. By sequentially installing short rods 210 and then connecting them with long rods 220, the intermediate support plate 300 is connected to the arc-shaped pressure plate component 500. Finally, by adjusting the jacking assembly, the pressure between the intermediate support plate 300 and the arc-shaped pressure plate component 500 is increased, thereby obtaining sufficient clamping force. Through the split structure design of the short rods 210, long rods 220, and intermediate support plate 300, the weight of the individual structure of the clamping assembly is reduced, making it easier to place the detachable lightweight divergent arc-shaped clamping support fixture inside the corresponding equipment, reducing the need for hoisting. Furthermore, the combination of plug-in and snap-fit ​​methods significantly reduces the bolt fixing structure, improves the convenience of disassembly, and reduces the workload during assembly. As a preferred embodiment of this embodiment, the intermediate support plate 300 includes a polygonal plate 310 and a ring array of clamping plates 320 distributed on the polygonal plate 310. The side wall of the card plate 320 is provided with a limiting guide rail, and the card slot 211 is provided with a matching limiting guide groove. Under the action of the limiting guide rail and the limiting guide groove, the short rod 210 moves centrifugally or centripetally along the card plate 320. In this embodiment, the polygonal plate 310 is a regular hexagonal structure. The polygonal plate 310 can also adopt other regular polygonal structures. It should be noted that if a polygon with any number of sides is used, the same number of card plates 320, support rod assemblies 200 and arc-shaped pressure plate components 500 need to be configured. In a preferred embodiment of this invention, the guide hole is composed of an inner guide hole 221 and an outer sleeve hole 222. The cross-section of the inner guide hole 221 is the same as the cross-section of the shaped rod 231. The size of the outer sleeve hole 222 is slightly larger than that of the screw 232. The shaped rod 231 extends into the inner guide hole 221. In this embodiment, the irregular rod 231 has an arc-shaped structure. Under the action of the inner guide hole 221, the irregular rod 231 cannot rotate axially, ensuring that the arc-shaped pressure plate component 500 will not easily deflect. Here, the depth of the inner guide hole 221 determines the adjustment length between the long rod 220 and the short rod 210. Generally, the irregular rod 231 retains at least a certain length inside the inner guide hole 221 to avoid deflection. This retained length is not less than 1 / 3 of the total depth of the inner guide hole 221. In a further preferred embodiment of the present invention, the arc-shaped pressure plate component 500 includes an arc-shaped panel 510, ribs 520 and support plates 530; the number of ribs 520 is not less than three sets and they are arranged in parallel on the inner arc surface of the arc-shaped panel 510, and different ribs 520 are connected by several sets of support plates 530. In this embodiment, the rib plate 520 and the support plate 530 form a mesh structure on the inner arc surface of the arc panel 510, improving the support effect on the arc panel 510. The long rod 220 has a cross-shaped slot at its end away from the short rod 210, which engages with the connection between the rib plate 520 and the support plate 530. The cross-shaped slot of the long rod 220 connects with the intersection of the rib plate 520 and the support plate 530 at the center of the arc panel 510. A bolt structure is used for reinforcement, improving the connection strength between the arc panel 510 and the long rod 220. In practical applications, the arc-shaped pressure plate component 500 can be adapted and replaced according to the inner arc surface of the cylindrical structure. The arc-shaped pressure plate component 500 with a suitable arc degree can be selected to complete the connection according to the arc surface requirements. In a preferred embodiment of this invention, auxiliary support rods 400 are also provided between the support rod assemblies 200; adjacent support rod assemblies 200 are connected by the auxiliary support rods 400. The auxiliary support member 400 includes a first connecting rod 401, a second connecting rod 402, and a telescopic rod body 420. The first connecting rod 401 and the second connecting rod 402 are hinged to each other. The telescopic rod body 420 is provided with a first deflection rod 411 and a third deflection rod 412. The telescopic rod body 420 is hinged to the first connecting rod 401 and the second connecting rod 402 through the first deflection rod 411 and the third deflection rod 412, respectively. The telescopic rod 420 is provided with a hinge seat 422 at one end away from the first connecting rod 401 and the second connecting rod 402, and a hinge post 330 is provided on the intermediate support plate 300. The hinge post 330 is inserted into the shaft hole provided on the hinge seat 422. The first connecting rod 401 and the second connecting rod 402 are provided with sliding grooves at both ends. The sliding grooves are respectively engaged with adjacent long rods 220. The long rods 220 are also provided with screw holes for installing the pin structure. The side wall of the sliding groove is provided with connecting screw holes. The sliding groove and the adjacent long rods 220 are hinged together with the help of the pin structure. The first deflection rod 411 and the third deflection rod 412 are also connected to the telescopic rod 420 by a hinge; therefore, the auxiliary support rod 400 forms a three-point support structure in the adjacent support rod assembly 200, and the supporting force of the auxiliary support rod 400 mainly comes from the elastic force of the telescopic rod 420. The telescopic rod 420 also includes a connecting seat 421, a push rod 423, and a main rod 424. The main rod 424 and the push rod 423 are nested together. The first deflecting rod 411 and the third deflecting rod 412 are respectively hinged to the connecting seat 421. The connecting seat 421 is located at one end of the main rod 424, and the hinge seat 422 is located at the end of the push rod 423. The push rod 423 includes a rod body 4231, a limiting ring 4232, a spring 4233, and a limiting plate 4234. The main rod body 424 has an outer port 4242 at one end away from the connecting seat 421. The main rod body 424 has an inner sliding groove 4241 inside. The rod body 4231 extends from the outer port 4242 into the inner sliding groove 4241. The limiting plate 4234 is located at the end of the rod body 4231. The diameter of the outer port 4242 is smaller than the diameter of the inner sliding groove 4241 and the limiting plate 4234. Therefore, the limiting plate 4234 slides inside the inner sliding groove 4241. The limiting ring 4232 is located on the part of the rod body 4231 that extends out of the inner sliding groove 4241. A spring 4233 is provided between the limiting ring 4232 and the outer port 4242. The spring 4233 generates an elastic force to pull the limiting plate 4234 away from the connecting seat 421 and abut against the inner wall of the outer port 4242. Here, the spring 4233 helps the auxiliary support rod 400 to form a traction force at the ends of the first connecting rod 401, the second connecting rod 402 and the telescopic rod 420, thereby enhancing the connection strength between the support rod assembly 200 and the intermediate support plate 300. This allows the arc-shaped pressure plate component 500 to obtain a stable clamping force and enhances the clamping effect of the part to be clamped 100. It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A detachable, lightweight, divergent arc-shaped clamping support fixture, characterized in that, include: The support rod assembly (200) and the intermediate support plate (300) are provided. The intermediate support plate (300) is a regular polygon structure. The intermediate support plate (300) is provided with a locking plate (320) with the same number of sides as the regular polygon. The support rod assembly (200) is engaged with the locking plate (320). The support rod assembly (200) includes a short rod (210), a long rod (220), and a pushing assembly. The short rod (210) and the long rod (220) are connected by the pushing assembly. The end of the short rod (210) away from the long rod (220) is engaged with a clamping plate (320). One end of the pushing assembly is fixedly connected to the short rod (210), and the other end is inserted into a guide hole provided on the long rod (220). The support rod assemblies (200) are also provided with auxiliary support rods (400). Adjacent support rod assemblies (200) are connected by auxiliary support rods (400). An arc-shaped pressure plate component (500) is provided, wherein the end of the long rod (220) away from the short rod (210) is connected to the arc-shaped pressure plate component (500); The auxiliary support rod (400) includes a first connecting rod (401), a second connecting rod (402), and a telescopic rod body (420). The first connecting rod (401) and the second connecting rod (402) are hinged to each other. The telescopic rod body (420) is provided with a first deflection rod (411) and a third deflection rod (412). The telescopic rod body (420) is hinged to the first connecting rod (401) and the second connecting rod (402) through the first deflection rod (411) and the third deflection rod (412), respectively. The ends of the first connecting rod (401) and the second connecting rod (402) are respectively hinged to different long rods (220); The end of the telescopic rod (420) away from the first connecting rod (401) and the second connecting rod (402) is hinged to the intermediate support plate (300); The telescopic rod (420) includes a connecting seat (421), a hinge seat (422), a push rod (423), and a main rod (424). The main rod (424) and the push rod (423) are nested together. The connecting seat (421) is located at one end of the main rod (424), and the hinge seat (422) is located at the end of the push rod (423). The first deflection rod (411) and the third deflection rod (412) are respectively hinged to the connecting seat (421), and the push rod (423) is hinged to the intermediate support plate (300) through the hinge seat (422); The push rod (423) includes a rod body (4231), a limiting ring (4232), a spring (4233), and a limiting plate (4234). The main rod body (424) has an outer port (4242) at one end away from the connecting seat (421). The main rod body (424) has an inner sliding groove (4241) inside. The rod body (4231) extends from the outer port (4242) into the inner sliding groove (4241). The limiting plate (4234) is located at the end of the rod body (4231) and slides inside the inner sliding groove (4241).

2. The detachable lightweight divergent arc-shaped clamping support fixture as described in claim 1, characterized in that, The jacking assembly includes a shaped rod (231), a screw (232), and a bolt (233). The shaped rod (231) is disposed at one end of the screw (232), and the end of the screw (232) away from the shaped rod (231) is fixedly connected to a short rod (210). The bolt (233) is assembled on the screw (232). The guide hole consists of an inner guide hole (221) and an outer sleeve hole (222). The shaped rod (231) extends into the inner guide hole (221), and a portion of the screw (232) extends into the outer sleeve hole (222). The bolt (233) is located on the portion that extends into the guide hole.

3. The detachable lightweight divergent arc-shaped clamping support fixture as described in claim 1, characterized in that, The side wall of the card plate (320) is provided with a limiting guide rail, and the short rod (210) is provided with a slot (211) at one end near the middle support plate (300). The slot (211) is provided with a matching limiting guide groove. Under the action of the limiting guide rail and the limiting guide groove, the short rod (210) moves centrifugally or centripetally along the card plate (320).

4. The detachable lightweight divergent arc-shaped clamping support fixture as described in claim 2, characterized in that, The cross-section of the inner guide hole (221) is the same as the cross-section of the shaped rod (231).

5. The detachable lightweight divergent arc-shaped clamping support fixture as described in claim 4, characterized in that, The diameter of the outer port (4242) is smaller than the diameter of the inner groove (4241).

6. The detachable lightweight divergent arc-shaped clamping support fixture as described in claim 1, characterized in that, The arc-shaped pressure plate component (500) includes an arc-shaped panel (510), ribs (520) and support plates (530); the number of ribs (520) is not less than three sets and they are arranged in parallel on the inner arc surface of the arc-shaped panel (510), and different ribs (520) are connected by several sets of support plates (530).

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