Rack suitable for hyper-fusion flexible parallel multiplexing digital direct current system

Abstract

The invention relates to the technical field of power electronics, and discloses a rack suitable for a hyper-fusion flexible parallel multiplexing digital direct current system, which comprises a bearing mechanism, a power supply mechanism and a control mechanism, comprising a bearing frame, a driving assembly arranged in an inner cavity of the bearing frame, a rotating shaft hinged to the top of the bearing frame, a transverse plate fixedly installed on the outer side of the rotating shaft, a cooling fan fixedly installed on the top of the transverse plate, and a rotary knob installed on the top of the transverse plate in a threaded mode. The packaging mechanism adopts a three-dimensional layout mode, the grooves provide embedded installation space, the embedded installation mode enables an assembled module to be tightly attached to the interior of the supporting plate, integrated layout of components is achieved, extra space occupied by scattered installation of all the components is avoided, and the packaging structure is simple in structure and convenient to use. By means of the centralized installation mode, the positions of components can be reasonably arranged in a limited space, occupied space is effectively reduced, and the space utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of power electronics, and in particular to a rack suitable for a hyper-converged flexible parallel multiplexing digital direct current system. Background Art

[0002] In recent years, with the rapid development of electronic equipment, industrial automation, data centers and other fields, higher requirements have been placed on the stability, flexibility and efficiency of DC power supply. The traditional DC system architecture has gradually exposed its limitations when facing a variety of different load demands, complex power distribution and integration of different power inputs. In order to adapt to this multi-faceted demand, a hyper-converged flexible parallel multiplexing digital DC system has emerged. It aims to solve problems that are difficult to cope with under traditional architectures, such as the coordination of multiple power inputs, the adaptation of different load characteristics, and ensuring stable DC power supply under complex working conditions.

[0003] At present, in order to meet different voltage requirements, the load needs to be equipped with a separate power conversion device. However, due to the modular design, the connection lines between modules need to occupy a certain space. If the layout of these lines and pipelines is unreasonable, it may cause a waste of space and increase the complexity inside the device, which is not conducive to subsequent maintenance and troubleshooting. Summary of the invention

[0004] In view of the problem that the above-mentioned existing overall architecture device has an unreasonable layout, resulting in a waste of space, and increasing the complexity inside the device, which is not conducive to subsequent maintenance and troubleshooting, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a rack suitable for a hyper-converged flexible parallel multiplexing digital DC system.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: including:

[0007] The bearing mechanism comprises a bearing frame, a driving assembly arranged in the inner cavity of the bearing frame, a rotating shaft hinged on the top of the bearing frame, a horizontal plate fixedly mounted on the outer side of the rotating shaft, a cooling fan fixedly mounted on the top of the horizontal plate, and a knob threadedly mounted on the top of the horizontal plate;

[0008] The packaging mechanism includes a three-dimensional frame arranged in the inner cavity of the carrier frame, a plurality of positioning strips fixedly installed at the center of the three-dimensional frame, a plurality of grooves opened on the outer side of the three-dimensional frame, a support plate fixedly installed in the inner cavity of the groove, a heat dissipation groove opened on the inner side of the support plate, a card groove opened on the inner wall of the support plate, and a positioning component arranged in the inner cavity of the support plate.

[0009] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the packaging mechanism also includes an axis rod hinged on the outside of the three-dimensional frame, an opening and closing component arranged on the outer surface of the axis rod, and an arc groove opened on the outside of the support plate.

[0010] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the positioning assembly includes a positioning frame fixedly installed in the inner cavity of the support plate, a plurality of ventilation grooves opened on the outer surface of the positioning frame, and a positioning piece arranged on the outside of the positioning frame.

[0011] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the positioning member includes a slot block fixedly installed on the outside of the positioning frame, a spring fixedly installed in the inner cavity of the slot block, a connecting plate fixedly installed at the end of the spring, a positioning block fixedly installed on the outer surface of the connecting plate, a limiting hole opened on the inner side of the positioning block, and a limiting rod fixedly installed in the center of the inner cavity of the slot block.

[0012] As a preferred solution for the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the end of the limit rod passes through the connecting plate until it is clamped in the inner cavity of the limit hole, and the positioning block is movably clamped in the clamping slot.

[0013] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the opening and closing assembly includes an arc plate fixedly mounted on the outer surface of the shaft rod, a convex strip fixedly mounted on the inner surface of the arc plate, a socket transversely penetrating the inner cavity of the convex strip, and a rod inserted into the inner cavity of the socket.

[0014] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the convex strip is movably clamped in the arc groove, and the end of the insertion rod is movably inserted into the inner wall of the arc groove.

[0015] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the driving assembly includes a fixed seat fixedly installed in the inner cavity of the carrier frame, a servo motor fixedly installed on the outside of the fixed seat, a driving gear fixedly installed at the end of the servo motor, a driven gear meshing with the driving gear, a vertical plate movably installed on the outside of the driven gear, a rotating rod adaptably connected to the center of the outer side of the driven gear, and a plurality of limit sleeves sleeved on the outer surface of the rotating rod.

[0016] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the three-dimensional frames are divided into three groups and are evenly distributed and sleeved on the outer surface of the rotating rod, and the limiting sleeves are located on the outside of the three-dimensional frames and are positioned by bolts.

[0017] As a preferred solution of the rack suitable for the hyper-converged flexible parallel multiplexed digital DC system described in the present invention, the supporting mechanism also includes a hollow tube fixedly installed in the cavity of the supporting frame, and a sound insulation honeycomb panel filled in the inner cavity of the hollow tube.

[0018] The beneficial effects of the present invention are as follows: by adopting a three-dimensional layout method through the packaging mechanism, the groove provides an embedded installation space. This embedded installation method enables the assembled module to fit tightly in the support plate, realizing the integrated layout of the components and avoiding the extra space occupied by the scattered installation of each component. This centralized installation method enables the position of the components to be reasonably arranged within a limited space, effectively reducing the space occupied and improving the space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a partial schematic diagram of the packaging mechanism structure of the present invention.

[0022] Figure 3 It is an exploded view of the opening and closing component structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the positioning component of the present invention.

[0024] Figure 5 It is an exploded view of the positioning member structure of the present invention.

[0025] Figure 6 It is a partial schematic diagram of the driving component structure of the present invention.

[0026] Figure 7 It is a partial cross-sectional view of the support frame structure of the present invention.

[0027] In the figure: 100, bearing mechanism; 101, bearing frame; 102, driving assembly; 102a, fixing seat; 102b, servo motor; 102c, driving gear; 102d, driven gear; 102e, vertical plate; 102f, rotating rod; 102g, limiting sleeve; 103, rotating shaft; 104, horizontal plate; 105, cooling fan; 106, knob; 107, hollow tube; 108, sound insulation honeycomb plate; 200, packaging mechanism; 201, three-dimensional frame; 202, positioning strip; 203, groove; 20 4. Support plate; 205. Heat dissipation slot; 206. Card slot; 207. Positioning assembly; 207a. Positioning frame; 207b. Ventilation slot; 207c. Positioning piece; 207c-1. Slot block; 207c-2. Spring; 207c-3. Connecting plate; 207c-4. Positioning block; 207c-5. Limiting hole; 207c-6. Limiting rod; 208. Axle rod; 209. Opening and closing assembly; 209a. Arc plate; 209b. Raised strip; 209c. Plug hole; 209d. Plug rod; 210. Arc slot. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0032] Example 1

[0033] Reference Figure 1-7 , which is the first embodiment of the present invention, provides a rack suitable for a hyper-converged flexible parallel multiplexing digital DC system, the device comprising:

[0034] The carrying mechanism 100 includes a carrying frame 101, a driving assembly 102 disposed in the inner cavity of the carrying frame 101, a rotating shaft 103 hinged on the top of the carrying frame 101, a horizontal plate 104 fixedly mounted on the outer side of the rotating shaft 103, a cooling fan 105 fixedly mounted on the top of the horizontal plate 104, and a knob 106 threadedly mounted on the top of the horizontal plate 104;

[0035] The packaging mechanism 200 includes a three-dimensional frame 201 arranged in the inner cavity of the carrier frame 101, a plurality of positioning bars 202 fixedly installed at the center of the three-dimensional frame 201, a plurality of grooves 203 opened on the outer side of the three-dimensional frame 201, a support plate 204 fixedly installed in the inner cavity of the grooves 203, a heat dissipation groove 205 opened on the inner side of the support plate 204, a card groove 206 opened on the inner wall of the support plate 204, and a positioning component 207 arranged in the inner cavity of the support plate 204.

[0036] Among them, the packaging mechanism 200 is provided with five grooves 203, and adopts a three-dimensional layout. The grooves 203 provide an embedded installation space. This embedded installation method enables the assembled module to fit tightly in the support plate 204 without occupying too much extra space, effectively reducing space occupancy and improving space utilization.

[0037] Specifically, the packaging mechanism 200 also includes an axis rod 208 hinged on the outside of the three-dimensional frame 201, an opening and closing component 209 arranged on the outer surface of the axis rod 208, and an arc groove 210 opened on the outside of the support plate 204. The positioning component 207 includes a positioning frame 207a fixedly installed in the inner cavity of the support plate 204, a plurality of ventilation grooves 207b opened on the outer surface of the positioning frame 207a, and a positioning member 207c arranged on the outside of the positioning frame 207a.

[0038] Among them, the shaft 208 can drive the opening and closing component 209 to realize the opening and closing movement, which is relatively quick and convenient when each module needs to be taken. The positioning frame 207a is used to support the module, and the ventilation groove 207b utilizes the outer surface space of the positioning frame 207a while realizing the ventilation function, which not only meets the needs of air circulation for heat dissipation, but also does not need to set up additional large ventilation ducts and other structures separately for the ventilation function, thereby improving the space utilization efficiency.

[0039] Furthermore, the positioning member 207c includes a slot block 207c-1 fixedly installed on the outside of the positioning frame 207a, a spring 207c-2 fixedly installed in the inner cavity of the slot block 207c-1, a connecting plate 207c-3 fixedly installed on the end of the spring 207c-2, a positioning block 207c-4 fixedly installed on the outer surface of the connecting plate 207c-3, a limiting hole 207c-5 opened on the inner side of the positioning block 207c-4, and a limiting rod 207c-6 fixedly installed in the center of the inner cavity of the slot block 207c-1. The end of the limiting rod 207c-6 passes through the connecting plate 207c-3 until it is clamped in the inner cavity of the limiting hole 207c-5, and the positioning block 207c-4 is movably clamped in the slot 206.

[0040] Among them, the shape of the positioning frame 207a is consistent with the shape of the groove 203, and when the positioning frame 207a is embedded in the groove 203, the spring 207c-2 will be compressed due to direct contact with the inner wall of the groove 203, and the limiting rod 207c-6 will move inside the limiting hole 207c-5 according to the expansion and contraction range of the spring 207c-2. Then, when the positioning member 207c as a whole moves to the slot 206, since the shape of the positioning block 207c-4 is the same as the shape of the slot 206, and the surface of the slot 206 that first contacts the positioning member 207c is an inclined surface, it can ensure that the positioning block 207c-4 is embedded under the elasticity of the spring 207c-2, thereby realizing the installation of the positioning frame 207a. Conversely, the positioning frame 207a can be directly held and pulled outward, and the spring 207c-2 will be compressed again, disengaged from the card slot 206, and can be removed, effectively realizing the effect of quick installation and quick removal.

[0041] Preferably, the opening and closing assembly 209 includes an arc plate 209a fixedly mounted on the outer surface of the shaft 208, a convex strip 209b fixedly mounted on the inner surface of the arc plate 209a, a socket 209c transversely penetrating the inner cavity of the convex strip 209b, and an insertion rod 209d inserted into the inner cavity of the socket 209c, the convex strip 209b is movably clamped in the arc groove 210, and the end of the insertion rod 209d is movably inserted into the inner wall of the arc groove 210.

[0042] When the opening and closing assembly 209 is closed, the convex strip 209b on the inner surface of the arc plate 209a will be embedded in the arc groove 210, and the arc plate 209a can be fixed by directly passing the insertion rod 209d through the insertion hole 209c and then plugging it into the inner wall of the arc groove 210.

[0043] When in use, the horizontal plate 104 serves as an installation platform for the cooling fan 105 and the knob 106, thereby expanding the function of the supporting mechanism 100. The cooling fan 105 can dissipate heat inside the device, while the knob 106 can be used to manually fix the horizontal plate 104. The three-dimensional frame 201 provides space for placing different modules. The opening of the groove 203 provides an embedded installation space for the support plate 204. The ventilation groove 207b cooperates with the heat dissipation groove 205 to achieve ventilation and heat dissipation. When it is necessary to take each module, the shaft 208 can drive the opening and closing component 209 to achieve opening and closing movement.

[0044] In summary, by installing multiple components inside the three-dimensional frame 201, an integrated layout of the components is achieved, avoiding the extra space occupied by the dispersed installation of each component. This centralized installation method makes it possible to reasonably arrange the positions of the components within a limited space, thereby improving space utilization efficiency.

[0045] Example 2

[0046] Reference Figure 2 , Figure 6 and Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that it provides a method for adjusting the angle of the packaging component.

[0047] Furthermore, the driving assembly 102 includes a fixing seat 102a fixedly mounted in the inner cavity of the carrier 101, a servo motor 102b fixedly mounted on the outer side of the fixing seat 102a, a driving gear 102c fixedly mounted on the end of the servo motor 102b, a driven gear 102d meshing with the driving gear 102c, a vertical plate 102e movably mounted on the outer side of the driven gear 102d, a rotating rod 102f adaptedly connected to the center of the outer side of the driven gear 102d, and a plurality of limit sleeves 102g sleeved on the outer surface of the rotating rod 102f.

[0048] Among them, the meshing structure of the driving gear 102c and the driven gear 102d makes the transmission of motion have a certain reduction ratio and torque amplification effect, which is helpful to effectively drive the movement of related components when a larger torque is required, such as starting a heavier load or overcoming a larger friction force. At the same time, through the precise control of the servo motor 102b, precise control of the movement speed, direction and position can be achieved. When adjusting the position of the three-dimensional frame 201, the rotation angle of the rotating rod 102f can be accurately controlled according to actual needs, thereby achieving accurate positioning of the three-dimensional frame 201 on the rotating rod 102f.

[0049] Furthermore, the three-dimensional frame 201 is divided into three groups and is evenly distributed and sleeved on the outer surface of the rotating rod 102f. The limiting sleeve 102g is located on the outside of the three-dimensional frame 201 and is positioned by bolts. The supporting mechanism 100 also includes a hollow tube 107 fixedly installed in the cavity of the supporting frame 101, and a sound insulation honeycomb panel 108 filling the inner cavity of the hollow tube 107.

[0050] Among them, the three groups of three-dimensional frames 201 effectively ensure the use of space when assembling various modules, provide more space for placement, and the limiting sleeve 102g is used to locate the position between the three-dimensional frames 201. The structural design of the hollow tube 107 realizes the integration of the sound insulation function without taking up too much space. As a part of the internal structure of the carrier frame 101, it not only plays a certain supporting role, but also can realize the sound insulation function, so that the device can maintain a relatively compact structural design while meeting multiple functional requirements.

[0051] When in use, the servo motor 102b drives the rotating rod 102f to rotate through the meshing transmission of the driving gear 102c and the driven gear 102d. After the three-dimensional frame 201 is rotated to a suitable angle, the opening and closing component 209 is opened to take and place the module. The honeycomb structure of the sound insulation honeycomb panel 108 can absorb and reflect sound waves to reduce the propagation of noise.

[0052] In summary, the servo motor 102b drives the rotating rod 102f to rotate through the meshing transmission of the driving gear 102c and the driven gear 102d, so as to achieve precise control of the position or state of the three-dimensional frame 201 and achieve angle adjustment.

[0053] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0054] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A rack suitable for a hyper-converged flexible parallel multiplexing digital DC system, characterized in that: include: The bearing mechanism (100) comprises a bearing frame (101), a driving assembly (102) arranged in the inner cavity of the bearing frame (101), a rotating shaft (103) hinged on the top of the bearing frame (101), a horizontal plate (104) fixedly mounted on the outside of the rotating shaft (103), a cooling fan (105) fixedly mounted on the top of the horizontal plate (104), and a knob (106) threadedly mounted on the top of the horizontal plate (104); The packaging mechanism (200) comprises a three-dimensional frame (201) arranged in the inner cavity of the carrier frame (101), a plurality of positioning strips (202) fixedly installed at the center of the three-dimensional frame (201), a plurality of grooves (203) provided on the outer side of the three-dimensional frame (201), a support plate (204) fixedly installed in the inner cavity of the grooves (203), a heat dissipation groove (205) provided on the inner side of the support plate (204), a card groove (206) provided on the inner wall of the support plate (204), and a positioning component (207) arranged in the inner cavity of the support plate (204).

2. The rack suitable for a hyper-converged flexible parallel multiplexing digital DC system according to claim 1, characterized in that: The packaging mechanism (200) further comprises a shaft (208) hinged on the outside of the three-dimensional frame (201), an opening and closing assembly (209) arranged on the outer surface of the shaft (208), and an arc-shaped groove (210) provided on the outside of the support plate (204).

3. The rack suitable for a hyper-converged flexible parallel multiplexing digital DC system according to claim 2, characterized in that: The positioning assembly (207) comprises a positioning frame (207a) fixedly mounted in the inner cavity of the support plate (204), a plurality of ventilation slots (207b) provided on the outer surface of the positioning frame (207a), and a positioning member (207c) arranged on the outer side of the positioning frame (207a).

4. The rack suitable for a hyper-converged flexible parallel multiplexing digital DC system according to claim 3, characterized in that: The positioning member (207c) comprises a slot block (207c-1) fixedly mounted on the outside of the positioning frame (207a), a spring (207c-2) fixedly mounted in the inner cavity of the slot block (207c-1), a connecting plate (207c-3) fixedly mounted at the end of the spring (207c-2), a positioning block (207c-4) fixedly mounted on the outer surface of the connecting plate (207c-3), a limiting hole (207c-5) provided on the inner side of the positioning block (207c-4), and a limiting rod (207c-6) fixedly mounted in the center of the inner cavity of the slot block (207c-1).

5. The rack suitable for a hyper-converged flexible parallel multiplexing digital DC system according to claim 4, characterized in that: The end of the limiting rod (207c-6) passes through the connecting plate (207c-3) until it is clamped in the inner cavity of the limiting hole (207c-5), and the positioning block (207c-4) is movably clamped in the clamping groove (206).

6. The rack suitable for a hyper-converged flexible parallel multiplexing digital DC system according to claim 5, characterized in that: The opening and closing assembly (209) comprises an arc-shaped plate (209a) fixedly mounted on the outer surface of the shaft (208), a convex strip (209b) fixedly mounted on the inner surface of the arc-shaped plate (209a), a plug hole (209c) transversely penetrating the inner cavity of the convex strip (209b), and an insertion rod (209d) inserted into the inner cavity of the plug hole (209c).

7. The rack suitable for a hyper-converged flexible parallel multiplexing digital DC system according to claim 6, characterized in that: The convex strip (209b) is movably clamped in the arc-shaped groove (210), and the end of the insertion rod (209d) is movably inserted into the inner wall of the arc-shaped groove (210).

8. The rack applicable to the hyper-converged flexible parallel multiplexing digital DC system according to claim 7, characterized in that: The driving assembly (102) comprises a fixing seat (102a) fixedly mounted in the inner cavity of the carrier (101), a servo motor (102b) fixedly mounted on the outside of the fixing seat (102a), a driving gear (102c) fixedly mounted on the end of the servo motor (102b), a driven gear (102d) meshing with the driving gear (102c), a vertical plate (102e) movably mounted on the outside of the driven gear (102d), a rotating rod (102f) adaptably connected to the center of the outside of the driven gear (102d), and a plurality of limit sleeves (102g) sleeved on the outer surface of the rotating rod (102f).

9. The rack applicable to the hyper-converged flexible parallel multiplexing digital DC system according to claim 8, characterized in that: The three-dimensional frames (201) are divided into three groups and are evenly distributed and sleeved on the outer surface of the rotating rod (102f). The limiting sleeve (102g) is located on the outer side of the three-dimensional frame (201) and is positioned by bolts.

10. The rack applicable to the hyper-converged flexible parallel multiplexing digital DC system according to claim 9, characterized in that: The bearing mechanism (100) further comprises a hollow tube (107) fixedly mounted in the cavity of the bearing frame (101), and a sound-insulating honeycomb panel (108) filled in the inner cavity of the hollow tube (107).

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