CN217898629U

CN217898629U - Tool platform

Info

Publication number: CN217898629U
Application number: CN202222311071.6U
Authority: CN
Inventors: 白体波; 许远忠; 张强; 张林波; 李慧敏
Original assignee: Chengdu Eugenlight Technologies Co ltd
Current assignee: Chengdu Eugenlight Technologies Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-25
Anticipated expiration: 2032-08-31

Abstract

The utility model relates to a tooling platform, which comprises a bearing platform, a frame for supporting the bearing platform and a shock insulation system for shock insulation, wherein the upper surface of the bearing platform is constructed into a mounting plane, the shock insulation system comprises at least three shock insulators, the shock insulators are fixed on the frame, the bearing platform is fixed on the shock insulators, the shock insulators are positioned between the frame and the bearing platform, and the shock insulators are used for shock insulation; the tool platform is compact in structure and reasonable in design, can effectively isolate the vibration on the ground, can provide a more stable horizontal installation basis for installed instruments, automatic mechanisms, equipment and the like, and is favorable for improving the coupling precision and the coupling quality of automatic equipment in the working process.

Description

Tool platform

Technical Field

The utility model relates to a frock platform technical field, concretely relates to frock platform.

Background

When the existing optical communication module and the optical component are coupled, operators are mostly used for manual coupling, dispensing, curing and other operations, and the mode has high requirements on experience of the operators, and has the problems of high labor cost, low coupling efficiency and the like. In order to solve the problem, the prior art discloses some automatic devices which can automatically couple, dispense and cure the optical communication module and the optical component, manual operation is not needed, and the coupling efficiency can be obviously improved.

The existing automation equipment is generally provided with a tool platform, and instruments, automation mechanisms (such as a coupling mechanism, a dispensing mechanism, a curing mechanism and the like) and equipment required by the processes of coupling, dispensing, curing and the like are installed on the tool platform, and the tool platform is generally placed on the ground of an installation site so as to provide a stable installation basis for the required instruments, automation mechanisms and equipment and achieve the purpose of ensuring the coupling quality. However, the tooling platform in the existing automation equipment generally has no shock-absorbing function, so that in the actual operation process of the automation equipment, the shock on the ground can be directly transmitted to the installed instruments, automation mechanisms, equipment and the like through the tooling platform, thereby bringing adverse effects to the operation of the installed instruments, automation mechanisms, equipment and the like, being very unfavorable for improving the coupling precision and the coupling quality, and urgently requiring solution.

Disclosure of Invention

The utility model discloses the first aspect will be solved the frock platform in the current automation equipment and does not have the function of moving away to avoid possible earthquakes, make the actual motion in-process at automation equipment, the vibrations on ground can directly transmit the apparatus of installing through the frock platform, automation mechanism and equipment etc, to the apparatus of installing, the operation of automation mechanism and equipment etc. brings harmful effects's problem, a frock platform that can effectively completely cut off ground vibrations is provided, can provide a more stable horizontal installation basis, be favorable to improving automation equipment's coupling precision and coupling quality, the main conception is:

a tooling platform comprises a bearing platform, the upper surface of the bearing platform is constructed into a mounting plane,

a frame for supporting the load-bearing platform,

and the shock insulation system is used for shock insulation and comprises at least three shock insulators, the shock insulators are fixed on the rack, the bearing platform is fixed on the shock insulators, the shock insulators are positioned between the rack and the bearing platform, and the shock insulators are used for shock insulation. In the scheme, the shock insulation system is arranged in the tool platform, at least three shock insulators are arranged in the shock insulation system, and the three shock insulators are arranged between the rack and the bearing platform, so that the rack can support the bearing platform through the shock insulators, and the shock insulators can play a shock absorption and shock insulation role between the rack and the bearing platform; in the actual use operation process, on the one hand, the shock insulation system can prevent the vibration on the ground from being directly transmitted to the instruments, automation mechanisms, equipment and the like installed on the installation plane through the rack and the tooling platform, so that the adverse effect of the ground vibration on the operation of the instruments, the automation mechanisms, the equipment and the like can be isolated, on the other hand, the instruments, the automation mechanisms, the equipment and the like installed on the tooling platform can also generate vibration in the self operation process, when the horizontal deviation of the bearing platform occurs due to the vibration caused by the self operation of the installed instruments, the automation mechanisms, the equipment and the like, the shock insulation system can automatically adjust the level, the installation plane is ensured to be in the horizontal state, therefore, a more stable installation foundation can be provided for the installed instruments, the automation mechanisms, the equipment and the like, and the coupling precision and the coupling quality of the automation equipment are improved.

In order to solve the problem of automatic leveling, preferably, the vibration isolator adopts an air floatation vibration isolator. The existing air-flotation shock isolator usually has an air pressure adjusting function, and when a bearing platform is arranged above the shock isolator, and the pressure of one side of the bearing platform is increased, the air-flotation shock isolator corresponding to the side can be automatically inflated, so that the bearing platform is ensured to be positioned on the same horizontal plane, and the bearing platform can be automatically leveled.

Furthermore, the shock insulation system further comprises an air source, a triple switch and an electromagnetic valve, wherein the air source is communicated with the triple switch and used for generating compressed air, the triple switch is communicated with the electromagnetic valve, and the electromagnetic valve is communicated with the shock isolator. The electromagnetic valve is preferably a normally open electromagnetic valve, and the electromagnetic valve is used for closing the electromagnetic valve only when the automatic leveling function is not needed.

Preferably, the frame comprises at least three support legs, and the vibration isolators are fixed to the tops of the support legs.

In order to improve the strength and rigidity of the rack, the rack further comprises a plurality of connecting beams, and two adjacent supporting legs are connected together through the connecting beams.

In order to improve stability, preferably, the bearing platform is a marble platform. The marble platform is made of marble, the texture of the marble is hard, and the marble platform has excellent machinability, stability and economical practicability.

In order to move the tooling platform, further, at least three trundles are arranged at the bottom of the rack. So that the tooling platform can be moved by using the caster wheels.

In order to level the installation plane, the bottom of the machine frame is further provided with at least three foot cups. So that the mounting plane can be conveniently leveled by using the foot cup.

To facilitate mounting of the various automation mechanisms on the platform, the mounting plane is further configured with mounting holes and/or through-holes.

The utility model discloses the second aspect will be solved and is reduced the impact problem that the leveling process brought, and is further, still include at least three buffer, the buffer is located load-bearing platform's below, and the buffer is fixed in the frame, and the flexible end of buffer corresponds the load-bearing platform of top. By arranging at least three buffers below the bearing platform, when the air-floatation vibration isolator automatically levels the bearing platform, the bearing platform can swing up and down and contact the corresponding buffers, so that the up-and-down swing of the bearing platform can be buffered, and the impact caused by the leveling process is reduced.

Preferably, the buffer is a hydraulic buffer.

The third aspect of the utility model is to solve the problem of forming a storage space under the bearing platform, and further, the frame is also provided with a support plate which is arranged under the bearing platform,

the outer frame is sleeved on the outer side of the rack and fixedly connected to the rack, a gap is formed between the outer frame and the edge of the bearing platform, baffles are arranged on the outer side of the outer frame and surround four sides of the rack, a plurality of door openings are formed in the baffles, a cabinet door is arranged at each door opening, and the cabinet door is rotatably connected to the baffles and used for opening/closing the door openings. In the scheme, the side face of the whole rack can be surrounded by the matching of the outer frame and the baffle plate, so that a cabinet body is formed below the bearing platform, and the support plate, the bearing platform and the cabinet body can jointly surround an object placing space so as to install related equipment; a gap is reserved between the outer frame and the edge of the bearing platform, so that the bearing platform is not in direct contact with the outer frame, and the outer frame cannot influence the leveling process of the bearing platform.

Preferably, the cabinet door and/or the baffle are/is further configured with a plurality of heat dissipation holes.

The fourth aspect of the present invention is to solve the problem of external interference prevention, and further, the present invention further comprises a protective cover, wherein the protective cover is fixed on the outer frame, and covers the space above the bearing platform; the side of the protective cover is configured with an operating window. Through configuration safety cover, can cover various automation mechanism of installing on load-bearing platform, not only can play dustproof, waterproof, prevent wind etc. isolation protection's effect, prevent external interference, be favorable to improving automation equipment's coupling precision and coupling quality, can prevent moreover that inside various automation mechanism from causing the injury to the staff, be favorable to improving the security.

In order to facilitate checking, the protective cover comprises a framework and a plurality of light-transmitting plates, the lower end of the framework is fixed on the outer framework, and the light-transmitting plates are installed on the framework.

Preferably, the framework is formed by assembling sectional materials.

Preferably, the other side surfaces of the protective cover are also provided with window holes, window sashes are arranged at the window holes and are rotatably connected to the protective cover, and the window sashes are used for opening/closing the window holes.

Compared with the prior art, use the utility model provides a pair of frock platform, compact structure, and reasonable in design, can effectively completely cut off the vibrations on ground, can be for the apparatus of installing, more stable horizontal installation basis is provided for automation mechanism and equipment etc., can prevent that the vibrations on ground from passing through the frame and the direct apparatus of installing that transmits on the mounting plane of frock platform, automation mechanism and equipment etc., thereby can prevent that the vibrations on ground from bringing harmful effects to each apparatus, the operation of automation mechanism and equipment etc., be favorable to improving the coupling precision and the coupling quality of automation equipment in the course of the work.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is one of schematic structural diagrams of a tooling platform provided in embodiment 1 of the present invention.

Fig. 2 is a second schematic structural diagram of a tooling platform according to embodiment 1 of the present invention.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a bottom view of fig. 1.

Fig. 5 is a schematic structural diagram of a tooling platform provided in embodiment 2 of the present invention, in which an outer frame is not yet assembled.

Fig. 6 is a schematic structural diagram of a tooling platform provided in embodiment 2 of the present invention.

Fig. 7 is a top view of fig. 6.

Fig. 8 is a front view of fig. 6.

Fig. 9 isbase:Sub>A cross-sectional view taken atbase:Sub>A-base:Sub>A in fig. 8.

Fig. 10 is a schematic structural diagram of a tooling platform according to embodiment 3 of the present invention.

Fig. 11 is a front view of fig. 10.

Description of the drawings

Bearing platform 100, mounting plane 101, mounting hole 102 and through hole 103

Frame 200, support leg 201, foot cup 202, connecting beam 203, caster 204 and support plate 205

Vibration isolator 300 and buffer 301

Outer frame 400, connecting frame 401, gap 402, baffle 403, cabinet door 404, handle 405, heat dissipation hole 406 and hinge 407

Protective cover 500, skeleton 501, section bar 502, light-transmitting plate 503, operation window 504, casement 505.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The embodiment provides a tooling platform, which comprises a bearing platform 100, a frame 200 and a vibration isolation system for isolating vibration, wherein,

as shown in fig. 1-4, the carrying platform 100 has a certain thickness for installing the required instruments, automation mechanisms, equipment, etc., and the shape of the carrying platform 100 may be determined according to actual requirements, for example, in an embodiment, the carrying platform 100 adopts a rectangular structure, as shown in fig. 1, the upper surface of the carrying platform 100 is configured as a mounting plane 101, so as to provide a horizontal mounting base for installing the required instruments, automation mechanisms, equipment, etc. The bearing platform 100 may be made of stainless steel, wood, stone, or the like, for example, in the embodiment, the bearing platform 100 is preferably made of marble, the marble has a hard texture, and the marble platform has the advantages of good workability, stability, economical efficiency, and the like. In order to facilitate the installation of the required instruments, automation mechanisms, equipment, etc. on the carrying platform 100, the mounting plane 101 is further configured with a plurality of mounting holes 102 and/or through holes 103, as shown in fig. 1, wherein the mounting holes 102 may penetrate through the carrying platform 100, and the through holes 103 may be square holes or round holes, and may penetrate through the carrying platform 100 so as to communicate with the lower part of the carrying platform 100.

In the present embodiment, the frame 200 is mainly used for supporting the load-bearing platform 100, so that the frame 200 can be a frame 200 commonly used in the prior art. In this embodiment, the vibration isolation system includes at least three vibration isolators 300, wherein the vibration isolators 300 are fixed to the frame 200, for example, may be fixed to the top of the frame 200, and meanwhile, the supporting platform 100 is fixed to the vibration isolators 300, so that the vibration isolators 300 are located right between the frame 200 and the supporting platform 100, as shown in fig. 1-4, the vibration isolators 300 may play a role in vibration absorption and vibration isolation between the frame 200 and the supporting platform 100; in the actual use operation process, on one hand, the vibration isolation system can prevent the vibration on the ground from being directly transmitted to each instrument, automation mechanism, equipment and the like on the installation plane 101 through the rack 200 and the tooling platform, so that the adverse effect of the vibration on the ground on the operation of each instrument, automation mechanism, equipment and the like can be isolated, on the other hand, the vibration isolation system can also generate vibration in the operation process of each instrument, automation mechanism, equipment and the like on the tooling platform, and when the vibration caused by the operation of each instrument, automation mechanism, equipment and the like causes the horizontal deviation of the bearing platform 100 (namely, when the installation plane 101 is not in the horizontal position), the vibration isolation system can automatically adjust the level, so that the installation plane 101 is ensured to be in the horizontal state, so that a more stable installation foundation can be provided for each automation mechanism, and the coupling precision and the coupling quality of automation equipment can be improved.

In this embodiment, the air-floating vibration isolator 300 may be preferentially adopted as the vibration isolator 300, for example, the existing air bag type air-floating vibration isolator 300, the diaphragm type air-floating vibration isolator 300, etc. may be preferentially adopted, the existing air-floating vibration isolator 300 usually has an air pressure adjusting function, and when the bearing platform 100 is installed above the vibration isolator 300, and when the pressure of one side of the bearing platform 100 becomes large, the air-floating vibration isolator 300 corresponding to the side may be automatically inflated, so as to ensure that the bearing platform 100 is located on the same horizontal plane, thereby automatically leveling the bearing platform 100.

In more perfect scheme, shock insulation system still includes air supply, trigeminy switch and solenoid valve, and wherein, the air supply can be linked together through pipeline and trigeminy switch, and the air supply is used for producing compressed air, and the trigeminy switch can be linked together through pipeline and solenoid valve, and the solenoid valve can be linked together through pipeline and shock isolator 300, and when disposing a plurality of solenoid valves, the solenoid valve can be linked together through many pipelines and each shock isolator 300 respectively. In actual use, compressed air generated by the air source may be transmitted into the vibration isolator 300 via the triple switch and the solenoid valve in sequence. In this embodiment, the air source may preferably be an air pump, and the triple switch generally includes an air filter, a pressure regulating valve and an oil feeder, which are well known in the art and will not be described herein. In this embodiment, the electromagnetic valve may preferably be a normally open electromagnetic valve, and since the vibration isolator 300 selected in this embodiment has an air pressure adjusting function, the vibration isolating system may automatically level the bearing platform 100, in this embodiment, the electromagnetic valve is only used to close the vibration isolating system when the automatic leveling function is not needed.

In a preferred embodiment provided by this embodiment, the frame 200 includes at least three legs 201, the vibration isolators 300 may be fixed on the tops of the legs 201 to support the bearing platform 100 by using the legs 201, for example, the frame 200 includes four legs 201, as shown in fig. 1 to 4, the legs 201 may be rectangular pipes, the vibration isolators 300 are respectively mounted on the tops of the legs 201, the tops of the vibration isolators 300 are connected to the bearing platform 100, and a foot cup 202 is respectively disposed on the bottom of each leg 201 to adjust the height of each leg 201 by using the foot cup 202, so as to facilitate leveling the installation plane 101. It will be appreciated that in practice the number of foot cups 202 will be adapted to the number of legs 201.

More perfectly, the bottom of the frame 200 is further provided with at least three casters 204, so as to use the casters 204 to move the tooling platform, and the number of the casters 204 can be determined according to actual requirements. In order to improve the strength and rigidity of the frame 200, two adjacent legs 201 may be connected together by a connecting beam 203, as shown in fig. 1 and 4; in this case, the caster 204 may be mounted on the connection beam 203, as shown in fig. 1 and 2, for example.

In a further aspect, the tooling platform further includes at least three buffers 301, each buffer 301 is located below the carrying platform 100, the buffers 301 are fixed to the rack 200, for example, as shown in fig. 1 to 4, the buffers 301 may be fixed to the connecting beams 203 of the rack 200, and the telescopic ends of the buffers 301 correspond to the carrying platform 100 above. In implementation, when the tooling platform is configured with only three buffers 301, the three buffers 301 should be arranged in a triangle. Initially, the telescopic end of the buffer 301 may not contact the lower surface of the bearing platform 100, and when the air-floating vibration isolator 300 is automatically leveling the bearing platform 100, the bearing platform 100 may swing up and down and contact the corresponding buffer 301, so as to buffer the up-and-down swing of the bearing platform 100, reduce the impact caused by the leveling process, and make the leveling process more stable.

In practice, the shock absorber 301 may be an existing spring damper or the like, and in a preferred embodiment, the shock absorber 301 may be an existing hydraulic shock absorber 301.

Example 2

In order to solve the problem of forming a storage space under the supporting platform 100, the main difference between the present embodiment 2 and the above embodiment 1 is that the rack 200 of the tooling platform provided in the present embodiment is further provided with a supporting plate 205, the supporting plate 205 is disposed under the supporting platform 100, for example, as shown in fig. 5, the supporting plate 205 can be horizontally mounted on the connecting beam 203 of the rack 200, and the supporting plate 205 and the supporting platform 100 have a distance so as to form the storage space. As shown in fig. 5, the support plate 205 is also configured with a plurality of mounting holes 102 for mounting and fixing the related devices, such as a host computer of a computer, a desired controller, a distribution box, the above-mentioned gas source, a solenoid valve, a triple switch, etc.

The tooling platform provided by this embodiment further includes an outer frame 400, as shown in fig. 6-9, the outer frame 400 is sleeved outside the rack 200 and is fixed to the rack 200, for example, as shown in fig. 6 and 9, the outer frame 400 may be a rectangular frame, the outer frame 400 may be connected to the legs 201 of the rack 200 through a plurality of L-shaped connecting frames 401, for convenience of assembly, one end of the connecting frame 401 may be connected to the legs 201 through a bolt pair, and the other end may also be connected to the outer frame 400 through a bolt pair. As shown in fig. 8, the lower end of the outer frame 400 may be flush with the bottom ends of the legs 201 such that the lower end of the outer frame 400 is spaced apart from the ground.

When the outer frame 400 is fixedly connected to the frame 200, the outer frame 400 has a gap 402 with the edge of the load-bearing platform 100, as shown in fig. 6 and 7, so that the load-bearing platform 100 does not directly contact the outer frame 400, and the outer frame 400 does not affect the leveling process of the load-bearing platform 100.

In this embodiment, the outer side of the outer frame 400 is further provided with baffles 403 to surround four sides of the rack 200 with the baffles 403, as shown in fig. 6 and 7, so as to form a cabinet under the load-bearing platform 100, and the supporting plate 205, the load-bearing platform 100 and the cabinet may together surround a storage space for installing related equipment.

As shown in fig. 6 and 8, the baffle 403 is further configured with a plurality of door openings, a cabinet door 404 is disposed at the door opening, the cabinet door 404 can be rotatably connected to the baffle 403 through hinges 407 for opening/closing the door opening, and the cabinet door 404 is further configured with a handle 405, a lock, and the like, thereby being more convenient to use.

More perfectly, the cabinet door 404 and/or the baffle 403 are also configured with a number of heat dissipation apertures 406 to dissipate heat.

Example 3

For solving the problem of preventing external interference, the main difference between this embodiment 3 and the above embodiments is that the tooling platform provided by this embodiment further includes a protection cover 500, the protection cover 500 is fixed to the outer frame 400, and the protection cover 500 covers the space above the carrying platform 100, as shown in fig. 10 and 11, by configuring the protection cover 500, various apparatuses, automation mechanisms, devices and the like installed on the carrying platform 100 can be covered, so that the effects of isolation protection such as dust prevention, water prevention, wind prevention and the like can be achieved, external interference is prevented, the coupling precision and the coupling quality of automation devices are improved, and the various internal automation mechanisms can be prevented from causing harm to workers, and the improvement of safety is facilitated.

In practice, the protective cover 500 may be formed by surrounding with the existing plate, such as a plastic plate, a steel plate, an aluminum plate, or glass. As an example, the protective cover 500 includes a frame 501 and a plurality of transparent plates 503, a lower end of the frame 501 is fixed to the outer frame 400, and the transparent plates 503 may be mounted on the frame 501 as shown in fig. 10 and 11. In practice, the frame 501 may be assembled by using the profiles 502, as shown in fig. 10, the frame 501 may be configured as a rectangular frame, and the transparent plate 503 may be installed in a frame surrounded by the profiles 502, as shown in fig. 10. In practice, the transparent plate 503 may be a plastic plate, a tempered glass plate, or the like.

For ease of handling, one side of the protective cover 500 is also configured with an access window 504, as shown in fig. 10 and 11. The remaining side of the protective cover 500 is further configured with a window opening, a window sash 505 is arranged at the window opening, the window sash 505 can be rotatably connected to the framework 501 of the protective cover 500 through a hinge 407, and the window sash 505 is mainly used for opening/closing the window opening so that workers can operate the window from different directions.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. The tooling platform is characterized by comprising a bearing platform, wherein the upper surface of the bearing platform is constructed into a mounting plane,

a frame for supporting the load-bearing platform,

and the shock insulation system is used for shock insulation and comprises at least three shock insulators, the shock insulators are fixed on the rack, the bearing platform is fixed on the shock insulators, the shock insulators are positioned between the rack and the bearing platform, and the shock insulators are used for shock insulation.

2. The tooling platform of claim 1, wherein the vibration isolator is an air-float vibration isolator.

3. The tooling platform of claim 2, wherein the seismic isolation system further comprises an air source, a triple switch and an electromagnetic valve, wherein the air source is communicated with the triple switch and used for generating compressed air, the triple switch is communicated with the electromagnetic valve, and the electromagnetic valve is communicated with the seismic isolator.

4. The tooling platform of claim 2, wherein the frame includes at least three legs, the isolators being secured to tops of the legs;

and/or the bearing platform adopts a marble platform;

and/or the bottom of the frame is also provided with at least three casters;

and/or at least three foot cups are arranged at the bottom of the rack;

and/or the mounting plane is configured with a plurality of mounting holes and/or through holes.

5. The tooling platform of any one of claims 1-4, further comprising at least three buffers, wherein the buffers are located below the load-bearing platform, the buffers are fixed to the frame, and the telescopic ends of the buffers correspond to the upper load-bearing platform.

6. The tooling platform of claim 5, wherein the buffer is a hydraulic buffer.

7. The tooling platform of any one of claims 1-4, wherein the frame is further provided with a support plate, the support plate is fixed below the load-bearing platform,

the outer frame is sleeved on the outer side of the frame and fixed to be connected to the frame, a gap is reserved between the outer frame and the edge of the bearing platform, a baffle is arranged on the outer side of the outer frame and surrounds four sides of the frame, a plurality of door openings are formed in the baffle, a cabinet door is arranged at each door opening, and the cabinet door is rotatably connected to the baffle and used for opening/closing the door openings.

8. The tooling platform of claim 7, wherein the cabinet door and/or the baffle are further configured with a plurality of heat dissipation holes.

9. The tool platform according to claim 7, further comprising a protective cover fixed to the outer frame, the protective cover covering a space above the load-bearing platform, and an operation window being configured on a side surface of the protective cover.

10. The tooling platform of claim 9, wherein the protective cover comprises a framework and a plurality of light-transmitting plates, the lower end of the framework is fixed to the outer frame, and the light-transmitting plates are mounted on the framework;

and/or window openings are formed in the other side surfaces of the protective cover, window sashes are arranged at the window openings and are rotatably connected to the protective cover, and the window sashes are used for opening/closing the window openings.