Portable folding protective cover device

Abstract

The invention relates to the field of buildings, and discloses a portable folding protective cover device which comprises a protective cover and a base, a supporting frame is arranged on the inner wall of the protective cover, an adjusting rod is rotatably connected to the outer wall of the supporting frame, a supporting column is fixedly connected to the middle of the protective cover, and an adjusting assembly is arranged on the periphery of the supporting column. The supporting column is used for supporting or folding and storing the protective cover, a buffering assembly is arranged at the bottom of the supporting column and used for buffering impact force borne by the supporting column and the protective cover, and the bottom of the supporting column is fixedly connected with a supporting assembly through the buffering assembly and used for supporting and fixing the supporting column. The locking of the adjusting frame can be loosened by rotating the upper fastening nut and the lower fastening nut, so that the adjusting frame can be conveniently driven to move and adjust, the whole device can be conveniently supported and fixed, meanwhile, the labor intensity of operators is reduced, and rapid installation is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a portable folding protective cover device. Background Art

[0002] With the development of drone technology, the application of drones in many fields has gradually increased, especially in the fields of construction, agriculture, exploration and rescue. However, the widespread use of drones also brings the potential risk of falling objects from high altitudes. For example, drones are prone to mechanical failures or operational errors when flying or performing tasks, which can cause objects to fall accidentally and endanger ground workers and equipment. Especially at construction sites or field work areas.

[0003] Most of the existing protective measures are fixed structures, such as protective nets, ceilings or isolation areas, which have limited coverage and are not flexible enough to deal with the randomness and dynamics of falling objects or stones from drones. Secondly, in complex environments such as construction sites and field work areas, the range of activities of workers and equipment is large, and fixed protective devices are difficult to adjust as the work position changes, resulting in more blind spots in protection. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a portable folding protective cover device, which solves the problem that most of the protective measures in the prior art are fixed structures, making it inconvenient to adjust according to actual conditions.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a portable folding protective cover device, comprising a protective cover and a base, the inner wall of the protective cover is provided with a support frame, the outer wall of the support frame is rotatably connected with an adjustment rod, the middle part of the protective cover is fixedly connected with a support column, the outer periphery of the support column is provided with an adjustment component, which is used to support or fold and store the protective cover, the bottom of the support column is provided with a buffer component, which is used to buffer the impact force received by the support column and the protective cover, and the bottom of the support column is fixedly connected with a support component through the buffer component, which is used to support and fix the support column;

[0006] The supporting assembly includes a threaded rod, which is fixedly connected to the bottom of the base, and a movable rod 1 is rotatably connected to the outer side of the base. An adjusting frame is slidably connected to the outer periphery of the threaded rod, and a movable rod 2 is rotatably connected to the outer side of the adjusting frame. An upper fastening nut and a lower fastening nut are threadedly connected to the outer periphery of the threaded rod, and the upper fastening nut and the lower fastening nut are used to clamp and limit the adjusting frame. One end of the movable rod 1 is slidably connected to the middle part of the movable rod 2, and a fixing assembly is provided at one end of the movable rod 2 away from the adjusting frame, which is used to connect and fix the movable rod 2.

[0007] Preferably, the fixing assembly includes a fastening plate, which is rotatably connected to one end of the movable rod 2, and a fixing nail is slidably connected to the middle of the fastening plate, which is used to plug and fix the fastening plate and the ground.

[0008] Preferably, the adjustment assembly includes an adjustment block, which is slidably connected to the outer periphery of the support column, the end of the adjustment rod away from the support frame is rotatably connected to the outer side of the adjustment block, a fastening screw is threadedly connected to the middle part of the adjustment block, and a knob is fixedly connected to the end of the fastening screw away from the adjustment block, and an adjustment hole is opened on the outer side of the support column, and the adjustment hole and the fastening screw are clamped together.

[0009] Preferably, the buffer assembly includes a buffer shell, which is fixedly connected to the bottom of the support column, a connecting plate is slidably connected inside the buffer shell, a spring 2 is fixedly connected to the top of the connecting plate, a connecting column is fixedly connected to the bottom of the connecting plate, and a reset assembly is provided at the bottom of the connecting column for ejecting the connecting column upward.

[0010] Preferably, the reset assembly includes a buffer plate, the buffer plate is fixedly connected to the bottom of the connecting column, the bottom of the buffer plate is fixedly connected to a spring three, the top of the base is fixedly connected to a dustproof shell, the buffer plate is slidably connected to the inside of the dustproof shell, and one end of the spring three away from the buffer plate is fixedly connected to the inside of the dustproof shell.

[0011] Preferably, a telescopic rod is fixedly connected to the bottom of the support column, the bottom of the telescopic rod is fixedly connected to the top of the dustproof shell, the top of the dustproof shell is fixedly connected to a spring 1, and one end of the spring 1 is fixedly connected to the inside of the dustproof shell.

[0012] Preferably, an impact-resistant layer, an energy-absorbing buffer layer and a wear-resistant protective layer are fixedly connected inside the protective cover, the impact-resistant layer is used to resist direct impact of high-altitude falling objects, and the energy-absorbing buffer layer is used to absorb and disperse the kinetic energy of the falling objects.

[0013] Preferably, a connecting tube is rotatably connected to the top of the support column, a detection head is fixedly connected to one end of the connecting tube away from the support column, and a periscope is fixedly connected to the outside of the protective cover.

[0014] Preferably, the outside of the protective cover is fixedly connected to a camouflage outer layer via Velcro, and the bottom of the protective cover is fixedly connected to a fixing ear.

[0015] The present invention provides a portable folding protective cover device. It has the following beneficial effects:

[0016] 1. The present invention can loosen the lock of the adjustment frame by rotating the upper fastening nut and the lower fastening nut, so that the adjustment frame can be conveniently driven to move and adjust. When the adjustment frame moves, the movable rod 2 will be driven to move at the same time, and when the movable rod 2 moves, the fastening plate will be driven to move. After the fastening plate moves to the required position, it can be connected and fixed to the fastening plate by fixing nails. When the fastening plate is fixed, the upper fastening nut and the lower fastening nut can be rotated to lock the adjustment frame, so that the overall device can be supported and fixed, while reducing the labor intensity of the operator and facilitating quick installation.

[0017] 2. The present invention drives the fastening screw to rotate by turning the knob. When the fastening screw rotates, it will disengage from the adjustment hole. After the fastening screw disengages from the adjustment hole, the adjustment block can be conveniently driven manually to move and adjust, thereby facilitating the storage and unfolding of the entire device, and further facilitating the operator to install and adjust, while improving work efficiency.

[0018] 3. The present invention squeezes the buffer shell through the support column. When the buffer shell is squeezed, it will drive the connecting plate to move downward and squeeze the spring two. When the spring two is squeezed, it will drive the connecting plate to move downward. When the connecting plate is squeezed, the buffer plate will be squeezed through the connecting plate at the same time. When the buffer plate is squeezed, the spring three will be squeezed. Therefore, under the action of the spring three and the spring two, the impact force exerted on the protective cover can be conveniently buffered, thereby improving the safety of the operator and improving the overall applicability of the device.

[0019] 4. The present invention can buffer the impact force received by the protective cover through the action of the impact-resistant layer, thereby preventing the protective cover from being damaged when subjected to a large amount of impact force. In addition, the energy-absorbing buffer layer and the wear-resistant protective layer can conveniently buffer and absorb the impact force received by the protective cover, while increasing the wear resistance of the protective cover, thereby increasing the service life of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 is a schematic diagram of an adjusting rod of the present invention;

[0022] Figure 3 is a schematic diagram of the adjustment block of the present invention;

[0023] Figure 4 is a schematic diagram of a threaded rod of the present invention;

[0024] Figure 5 It is a schematic diagram of spring three of the present invention;

[0025] Figure 6 is a schematic diagram of a detection head of the present invention;

[0026] Figure 7 For the present invention Figure 3 The enlarged view of point A in the middle;

[0027] Figure 8 Schematic diagram of the wear-resistant protective layer of the present invention.

[0028] Among them, 1. Protective cover; 2. Camouflage outer layer; 3. Fixed ear; 4. Detection head; 5. Support column; 6. Adjustment block; 7. Adjustment rod; 8. Support frame; 9. Periscope; 10. Fixing nail; 11. Buffer shell; 12. Dust shell; 13. Base; 14. Movable rod one; 15. Threaded rod; 16. Adjustment frame; 17. Upper fastening nut; 18. Lower fastening nut; 19. Movable rod two; 20. Fastening plate; 21. Telescopic rod; 22. Spring one; 23. Spring two; 24. Connecting plate; 25. Buffer plate; 26. Spring three; 27. Connecting pipe; 28. Adjustment hole; 29. ​​Fastening screw; 30. Knob; 31. Impact resistance layer; 32. Energy absorption buffer layer; 33. Wear-resistant protective layer; 34. Connecting column. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please see attached Figure 1 and attached Figure 2 An embodiment of the present invention provides a portable folding protective cover device, including a protective cover 1 and a base 13. A support frame 8 is provided on the inner wall of the protective cover 1, and an adjusting rod 7 is rotatably connected to the outer wall of the support frame 8. A support column 5 is fixedly connected to the middle of the protective cover 1, and an adjusting component is provided on the outer periphery of the support column 5, which is used to support or fold and store the protective cover 1. A buffer component is provided at the bottom of the support column 5, which is used to buffer the impact force exerted on the support column 5 and the protective cover 1. The bottom of the support column 5 is fixedly connected to a supporting component through the buffer component, which is used to support and fix the support column 5.

[0031] The support frame 8 can conveniently support and fix the protective cover 1, and the adjustment rod 7 can conveniently drive the support frame 8 to move, and at the same time can conveniently adjust the tensioning force of the support frame 8 on the protective cover 1, and the support column 5 can conveniently further support and fix the protective cover 1.

[0032] Please see attached Figure 4The supporting assembly includes a threaded rod 15, which is fixedly connected to the bottom of the base 13. The outer side of the base 13 is rotatably connected to the movable rod 14. The outer periphery of the threaded rod 15 is slidably connected to the adjusting frame 16. The outer side of the adjusting frame 16 is rotatably connected to the movable rod 2 19. The outer periphery of the threaded rod 15 is threadedly connected to an upper fastening nut 17 and a lower fastening nut 18. The upper fastening nut 17 and the lower fastening nut 18 are used to clamp and limit the adjusting frame 16. One end of the movable rod 14 is slidably connected to the middle part of the movable rod 2 19. The end of the movable rod 2 19 away from the adjusting frame 16 is provided with a fixing assembly, which is used to connect and fix the movable rod 2 19.

[0033] The threaded rod 15 can conveniently support and fix the base 13, thereby making the base 13 more stable. The threaded rod 15 can conveniently support and limit the adjustment frame 16, and then the adjustment frame 16 can be conveniently moved up and down. When the adjustment frame 16 moves, it will drive the movable rod 2 19 to move at the same time. When the movable rod 2 19 moves, it will drive the movable rod 1 14 to move at the same time, so that the threaded rod 15 can be conveniently adjusted according to the actual situation of the ground. When the movable rod 2 19 moves to the required position, the adjustment frame 16 can be locked by rotating the upper fastening nut 17 and the lower fastening nut 18, thereby reducing the labor intensity of the operator and improving work efficiency.

[0034] Please refer to the attached Figure 4 The fixing assembly includes a fastening plate 20, which is rotatably connected to one end of the movable rod 19, and a fixing nail 10 is slidably connected to the middle of the fastening plate 20, which is used to plug and fix the fastening plate 20 and the ground.

[0035] When the movable rod 219 moves, the fastening plate 20 will be driven to move at the same time. After the fastening plate 20 moves to a position that matches the ground, it can be firmly fixed by the fixing nail 10, thereby facilitating the operation of the operator, while improving the overall stability of the device and facilitating the adjustment of the device as the working position changes.

[0036] Please refer to the attached Figure 2 , Attachment Figure 3 and attached Figure 7 The adjustment assembly includes an adjustment block 6, which is slidably connected to the outer periphery of the support column 5. The end of the adjustment rod 7 away from the support frame 8 is rotatably connected to the outer side of the adjustment block 6. A fastening screw 29 is threadedly connected to the middle part of the adjustment block 6. The end of the fastening screw 29 away from the adjustment block 6 is fixedly connected to a knob 30. An adjustment hole 28 is opened on the outer side of the support column 5, and the adjustment hole 28 and the fastening screw 29 are clamped together.

[0037] The knob 30 is manually driven to rotate, and when the knob 30 is rotated, the fastening screw 29 is driven to move at the same time, and when the fastening screw 29 is rotated, it will disengage from the adjustment hole 28. After the fastening screw 29 disengages from the adjustment hole 28, the adjustment block 6 can be conveniently manually driven to move, and when the adjustment block 6 moves, the support frame 8 is driven to move at the same time through the adjustment rod 7, so that the entire device can be easily stored or unfolded, which makes it convenient for operators to install and adjust, and at the same time improves work efficiency.

[0038] Please refer to the attached Figure 4 and attached Figure 5 The buffer assembly includes a buffer shell 11, which is fixedly connected to the bottom of the support column 5. A connecting plate 24 is slidably connected inside the buffer shell 11. A spring 23 is fixedly connected to the top of the connecting plate 24. A connecting column 34 is fixedly connected to the bottom of the connecting plate 24. A reset assembly is provided at the bottom of the connecting column 34, which is used to push the connecting column 34 upward.

[0039] When the support column 5 moves downward, the buffer shell 11 will be driven to move downward at the same time, and the support column 5 will squeeze the spring 23. When the spring 23 is squeezed, it will squeeze the connecting plate 24. When the connecting plate 24 is squeezed, it will move downward. When the connecting plate 24 moves downward, it will drive the connecting column 34 to move downward at the same time, thereby conveniently buffering the impact force received by the support column 5.

[0040] Please refer to the attached Figure 4 and attached Figure 5 The reset assembly includes a buffer plate 25, which is fixedly connected to the bottom of the connecting column 34, and a spring three 26 is fixedly connected to the bottom of the buffer plate 25. The top of the base 13 is fixedly connected to the dustproof shell 12, and the buffer plate 25 is slidably connected to the inside of the dustproof shell 12. One end of the spring three 26 away from the buffer plate 25 is fixedly connected to the inside of the dustproof shell 12, and the bottom of the support column 5 is fixedly connected to the telescopic rod 21, and the bottom of the telescopic rod 21 is fixedly connected to the top of the dustproof shell 12. The top of the dustproof shell 12 is fixedly connected to a spring one 22, and one end of the spring one 22 is fixedly connected to the inside of the dustproof shell 12.

[0041] When the connecting column 34 moves downward, it will squeeze the buffer plate 25, and when the buffer plate 25 is squeezed, it will squeeze the spring three 26, so that under the action of the spring three 26 and the spring two 23, the impact force on the protective cover 1 can be easily buffered, thereby improving the safety of the operator and the overall applicability of the device. When the support column 5 moves downward, it will squeeze the telescopic rod 21 and the spring one 22, and under the action of the telescopic rod 21 and the spring one 22, the support column 5 can be connected and limited, thereby preventing the support column 5 from deflecting when moving.

[0042] Please refer to the attached Figure 8 The protective cover 1 is internally fixedly connected with an impact-resistant layer 31, an energy-absorbing buffer layer 32 and a wear-resistant protective layer 33. The impact-resistant layer 31 is used to resist the direct impact of falling objects from a high altitude, and the energy-absorbing buffer layer 32 is used to absorb and disperse the kinetic energy of the falling objects.

[0043] The interior of the protective cover 1 is fixedly connected in sequence by an impact-resistant layer 31, an energy-absorbing buffer layer 32, and a wear-resistant protective layer 33. The three layers cooperate with each other to jointly improve the protective effect. The impact-resistant layer 31, as the outermost layer, is made of high-strength metal alloys such as aluminum alloys or titanium alloys or high-performance engineering plastics such as polycarbonate PC. It has extremely strong impact resistance and can effectively resist the direct impact of falling objects from high altitudes and prevent objects from penetrating the protective cover 1. In order to reduce weight and improve durability, this layer can also be combined with carbon fiber composite materials to achieve lightweight while ensuring strength. The energy-absorbing buffer layer 32, as the middle layer, is made of aluminum foam, EVA foam or honeycomb structure materials such as aluminum honeycomb panels. These materials have excellent energy absorption and dispersion capabilities, and can spread kinetic energy to a wider range when falling objects have an impact, thereby reducing the destructive impact on the protective cover 1. The inner wear-resistant protective layer 33 is made of high-density polyethylene HDPE or Kevlar fiber, and has extremely high tear resistance and wear resistance. It can not only protect the energy-absorbing buffer layer 32 and the impact-resistant layer 31 from wear, but also further enhance the overall protective strength of the protective cover 1.

[0044] Please refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 6 The top of the support column 5 is rotatably connected to a connecting tube 27, the end of the connecting tube 27 away from the support column 5 is fixedly connected to a detection head 4, the outside of the protective cover 1 is fixedly connected to a periscope 9, the outside of the protective cover 1 is fixedly connected to a camouflage outer layer 2 by Velcro, and the bottom of the protective cover 1 is fixedly connected to a fixing ear 3.

[0045] The connecting tube 27 can conveniently connect the detection head 4 and the periscope 9, so that the operator inside the protective cover 1 can observe the situation outside the protective cover 1 in real time, and can also conveniently observe the sky above. The camouflage outer layer 2 is connected to the protective cover 1 by Velcro, so that the camouflage outer layer 2 and the protective cover 1 can be conveniently disassembled, and then the camouflage outer layer 2 can be conveniently adjusted according to different environmental conditions such as forests, deserts, snow and other scenes.

[0046] Working principle: When the protective cover 1 is unfolded or stored as a whole, the knob 30 is manually driven to rotate. When the knob 30 is rotated, the fastening screw 29 is driven to rotate at the same time. When the fastening screw 29 is rotated, it will disengage from the adjustment hole 28. After the fastening screw 29 disengages from the adjustment hole 28, the adjustment block 6 can be manually driven to move. When the adjustment block 6 moves, the support frame 8 is driven to move at the same time through the adjustment rod 7. When the support frame 8 moves, the protective cover 1 as a whole can be further unfolded or stored.

[0047] When the unfolded protective cover 1 is connected and fixed, the upper fastening nut 17 and the lower fastening nut 18 are manually driven to rotate. When the upper fastening nut 17 and the lower fastening nut 18 are rotated, the lock of the adjustment frame 16 can be loosened. After the lock of the adjustment frame 16 is loosened, the adjustment frame 16 can be manually driven to move up and down. When the adjustment frame 16 moves, it will drive the movable rod 2 19 to move at the same time. When the movable rod 2 19 moves, it will drive the movable rod 1 14 and the fastening plate 20 to move. After the fastening plate 20 moves to the required position, it can be connected and fixed by the fixing nail 10, so that the entire device can be connected and fixed, thereby ensuring the stability of the entire device.

[0048] When the impact force on the support column 5 and the protective cover 1 is buffered, the support column 5 will move downward, and when the support column 5 moves downward, it will squeeze the buffer shell 11 and the spring 23, and when the spring 23 is squeezed, it will drive the connecting plate 24 and the connecting column 34 to move downward at the same time, and when the connecting column 34 moves downward, it will squeeze the buffer plate 25 and the spring three 26, so that under the action of the spring three 26 and the spring two 23, the impact force on the support column 5 and the protective cover 1 can be buffered.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable folding protective cover device, comprising a protective cover (1) and a base (13), characterized in that: The inner wall of the protective cover (1) is provided with a support frame (8), the outer wall of the support frame (8) is rotatably connected to an adjustment rod (7), the middle part of the protective cover (1) is fixedly connected to a support column (5), the outer periphery of the support column (5) is provided with an adjustment component, which is used to support or fold and store the protective cover (1), the bottom of the support column (5) is provided with a buffer component, which is used to buffer the impact force exerted on the support column (5) and the protective cover (1), and the bottom of the support column (5) is fixedly connected to a support component via the buffer component, which is used to support and fix the support column (5); The support assembly comprises a threaded rod (15), wherein the threaded rod (15) is fixedly connected to the bottom of the base (13), and the outer side of the base (13) is rotatably connected to a movable rod 1 (14), and the outer periphery of the threaded rod (15) is slidably connected to an adjustment frame (16), and the outer side of the adjustment frame (16) is rotatably connected to a movable rod 2 (19), and the outer periphery of the threaded rod (15) is threadedly connected to an upper fastening nut (17) and a lower fastening nut (18), and the upper fastening nut (17) and the lower fastening nut (18) are used to clamp and limit the adjustment frame (16), and one end of the movable rod 1 (14) is slidably connected to the middle part of the movable rod 2 (19), and the end of the movable rod 2 (19) away from the adjustment frame (16) is provided with a fixing assembly, which is used to connect and fix the movable rod 2 (19).

2. A portable folding protective cover device according to claim 1, characterized in that: The fixing assembly comprises a fastening plate (20), wherein the fastening plate (20) is rotatably connected to one end of the movable rod 2 (19), and a fixing nail (10) is slidably connected to the middle of the fastening plate (20) for plugging and fixing the fastening plate (20) and the ground.

3. A portable folding protective cover device according to claim 1, characterized in that: The adjustment assembly comprises an adjustment block (6), wherein the adjustment block (6) is slidably connected to the outer periphery of the support column (5), the end of the adjustment rod (7) away from the support frame (8) is rotatably connected to the outer side of the adjustment block (6), a fastening screw (29) is threadedly connected to the middle part of the adjustment block (6), and a knob (30) is fixedly connected to the end of the fastening screw (29) away from the adjustment block (6), and an adjustment hole (28) is opened on the outer side of the support column (5), and the adjustment hole (28) and the fastening screw (29) are clamped together.

4. A portable folding protective cover device according to claim 1, characterized in that: The buffer assembly comprises a buffer shell (11), the buffer shell (11) is fixedly connected to the bottom of the support column (5), a connecting plate (24) is slidably connected inside the buffer shell (11), a spring 2 (23) is fixedly connected to the top of the connecting plate (24), a connecting column (34) is fixedly connected to the bottom of the connecting plate (24), and a reset assembly is provided at the bottom of the connecting column (34), which is used to push the connecting column (34) upward.

5. A portable folding protective cover device according to claim 4, characterized in that: The reset assembly comprises a buffer plate (25), the buffer plate (25) is fixedly connected to the bottom of the connecting column (34), the bottom of the buffer plate (25) is fixedly connected to a spring three (26), the top of the base (13) is fixedly connected to a dustproof shell (12), the buffer plate (25) is slidably connected to the inside of the dustproof shell (12), and one end of the spring three (26) away from the buffer plate (25) is fixedly connected to the inside of the dustproof shell (12).

6. A portable folding protective cover device according to claim 5, characterized in that: The bottom of the support column (5) is fixedly connected to a telescopic rod (21), the bottom of the telescopic rod (21) is fixedly connected to the top of the dustproof shell (12), the top of the dustproof shell (12) is fixedly connected to a spring 1 (22), and one end of the spring 1 (22) is fixedly connected to the inside of the dustproof shell (12).

7. The portable folding protective cover device according to claim 1, characterized in that: An impact-resistant layer (31), an energy-absorbing buffer layer (32) and a wear-resistant protective layer (33) are fixedly connected inside the protective cover (1); the impact-resistant layer (31) is used to resist direct impact from falling objects; and the energy-absorbing buffer layer (32) is used to absorb and disperse the kinetic energy of falling objects.

8. The portable folding protective cover device according to claim 1, characterized in that: The top of the support column (5) is rotatably connected to a connecting pipe (27), one end of the connecting pipe (27) away from the support column (5) is fixedly connected to a detection head (4), and the outer side of the protective cover (1) is fixedly connected to a periscope (9).

9. The portable folding protective cover device according to claim 1, characterized in that: The outside of the protective cover (1) is fixedly connected to a camouflage outer layer (2) via Velcro, and the bottom of the protective cover (1) is fixedly connected to a fixing ear (3).

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