Aluminum safety net for helicopter pad

Abstract

The present invention relates to the technical field of helicopter landing platforms, and discloses an aluminum safety net for a helicopter pad, comprising a main net frame, which is arranged in a circular array on the outside of the main body of the helipad, the main net frames are all rotatably connected to the main body of the helipad, the inner sides of the main net frames are fixedly provided with rectangular nets, and the inner sides of the main net frames are provided with arc-shaped sliding surfaces, and the bottoms of the main net frames are provided with push plates, which push the main net frames to stand up and lay down when driven by external forces; and a secondary net frame, which is slidably installed on the inner side of the main net frame along the arc-shaped sliding surface, and the inner side of the secondary net frame is fixedly provided with fan-shaped nets, which are automatically retracted into the interior of the main net frame under the extrusion force when the two adjacent main net frames stand up. The aluminum safety net for the helicopter pad can effectively solve the problem in the prior art that the aluminum safety net cannot fully protect the circular helipads in different states.

Description

Technical Field

[0001] The invention relates to the technical field of helicopter landing platforms, and in particular to an aluminum safety net for a helicopter landing pad. Background Art

[0002] The apron safety net is generally fixed flat or movable, but these methods have certain limitations. The movable safety net requires manual operation, which is time-consuming and labor-intensive, and cannot provide timely protection when the helicopter lands. In order to solve these problems, the electric safety net came into being. The electric safety net can be remotely controlled to automatically fall down when the helicopter lands, and can automatically stand up after the aircraft leaves. It is convenient, fast, and saves time and effort.

[0003] Traditional helicopter aprons are circular in shape, and several aluminum safety nets are installed on the periphery of the apron in a square or circular manner. For the circular installation method, each safety net is fan-shaped or rectangular in shape. Although the fan-shaped safety net can provide comprehensive protection for the periphery of the apron after being laid down, it cannot be stood up to protect the apron. Although the rectangular safety net can provide comprehensive protection for the periphery of the apron when standing up, there are fan-shaped gaps between adjacent ones when laid down, making it impossible to achieve comprehensive protection, and thus it is impossible to provide comprehensive protection for the circular apron in different states. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an aluminum safety net for a helicopter apron, which can effectively solve the problem in the prior art that the aluminum safety net cannot fully protect circular aprons in different states.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an aluminum safety net for a helicopter pad, comprising:

[0009] The main net frames are arranged in a circular array outside the main body of the apron. The main net frames are rotatably connected to the main body of the apron. A rectangular net sheet is fixedly arranged inside the main net frames. An arc-shaped sliding surface is provided inside the main net frames. A push plate is arranged at the bottom of the main net frames. When driven by an external force, the push plate pushes the main net frame to stand up and lay down.

[0010] The auxiliary net frame is slidably mounted on the inner side of the main net frame along the arc-shaped sliding surface, and a fan-shaped net is fixedly arranged on the inner side of the auxiliary net frame, which is automatically retracted into the inner side of the main net frame by the squeezing force when the two adjacent main net frames are erected;

[0011] The ejection assembly is arranged on the inner side of the main mesh frame and is used to push the auxiliary mesh frame to slide toward the outer side of the main mesh frame when the rectangular mesh is laid down;

[0012] The ejection assembly includes a slide plate A, which is slidably arranged inside the main mesh frame. A spring is arranged at one end of the slide plate A away from the auxiliary mesh frame, and the spring is located inside a receiving groove A opened inside the main mesh frame.

[0013] Furthermore, an inclined surface A is provided inside the main screen frame, and the inclined surface A is arranged downwardly along the sliding contact surface of the arc-shaped sliding surface, and is used to guide the auxiliary screen frame to slide when the main screen frame is laid down;

[0014] The bottoms of both sides of the auxiliary net frame are provided with inclined surfaces B which are parallel to the inclined surface A, and the bottoms of the inclined surfaces B are provided with balls.

[0015] Furthermore, it also includes an insertion rod, which is slidably arranged on the inner side of the auxiliary net frame, following the auxiliary net frame to cooperate with one side of the main net frame. The insertion rod is driven by the push plate to trigger a sliding and plugging action on the inner side of the auxiliary net frame, so as to reinforce the two adjacent main net frames.

[0016] Furthermore, a sliding hole A and a sliding hole B are provided on the inner side of the main screen frame, and a receiving groove B for connecting the sliding hole A and the sliding hole B is provided on the side of the arc-shaped sliding surface close to the auxiliary screen frame;

[0017] It also includes two pushing blocks, which are slidably arranged on the inner sides of the sliding hole A and the sliding hole B respectively, and are used to drive the insertion rod to reinforce the two adjacent main net frames in the laid-down state and the erected state respectively. The two pushing blocks are triggered to slide under the drive of the push plate.

[0018] Furthermore, the insertion rod is arc-shaped and is arranged concentrically with the arc-shaped sliding surface. A sliding pin A is fixedly arranged on the outside of the insertion rod. The sliding pin A is slidably arranged on the outside of the auxiliary net frame through the receiving groove C. The sliding pin A slides between the sliding hole A and the sliding hole B driven by the auxiliary net frame.

[0019] A U-shaped inclined groove A is provided inside the pushing block, the inside of the U-shaped inclined groove A is arranged as an arc surface, and the width of the U-shaped inclined groove A is greater than the diameter of the sliding pin A, so as to push the sliding pin A to slide inside the accommodating groove C.

[0020] Furthermore, an L-shaped plate is fixedly arranged at the bottom of the main net frame, and a straight groove A and an inclined groove are opened inside the L-shaped plate, and the straight groove A and the inclined groove are connected end to end;

[0021] A slide bar A is fixedly provided on the top of the push plate, and the slide bar A is slidably arranged inside the straight groove A and the inclined groove. When the slide bar A slides to the ends of the straight groove A and the inclined groove, it drives the push blocks inside the slide hole A and the slide hole B to slide respectively.

[0022] Furthermore, it also includes a locking assembly A, wherein the locking assembly A drives the push block inside the slide hole A to slide under the drive of the slide rod A;

[0023] The locking assembly A comprises a V-shaped member rotatably arranged on the outside of the L-shaped plate and a slider A slidably installed on the bottom of the main net frame. The V-shaped member swings under the drive of the slide bar A to drive the slider A to slide back and forth. The slider A is driven by the V-shaped member to drive the push block to slide back and forth.

[0024] The slide bar A drives the V-shaped member to rotate when sliding into and out of the inner side of the inclined groove.

[0025] Furthermore, it also includes a locking assembly B, wherein the locking assembly B drives the push block inside the slide hole B to slide under the drive of the slide rod A;

[0026] The locking assembly B includes a connecting plate slidably arranged on the inner side of the L-shaped plate, a counterweight block is fixedly arranged on the outer side of the connecting plate, a slider B for driving the push block to slide reciprocally is fixedly arranged on the outer side of the counterweight block, and the connecting plate slides upward under the thrust of the slide rod A.

[0027] Furthermore, a plug hole A and a plug hole B are provided on a side of the main net frame away from the auxiliary net frame, and the plug hole A and the plug hole B respectively cooperate with the plug rod when the main net frame is laid down and stood up.

[0028] Beneficial Effects

[0029] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0030] The present invention is provided with a main net frame, and a secondary net frame is slidably arranged inside the main net frame. When the main net frame is rotated and laid down, the secondary net frame can be driven to slide to one side by the ejection component inside the main net frame, and the secondary net frame slides in an arc shape along the arc-shaped sliding surface, so that the part of the secondary net frame sliding out of the main net frame is fan-shaped, so as to prevent the existence of a fan-shaped protective gap between two adjacent main net frames; and when the main net frame is rotated and erected upward, the main net frame can squeeze the secondary net frame and automatically retract, and will not interfere with the state adjustment of the main net frame, so that the main net frame can be rotated to adjust the laying down and standing up states to comprehensively protect the main body of the helipad in different states; and the main net frame is pushed by a push plate to automatically adjust the laying down and standing up states, so as to automatically adjust the protective state of the main net frame to the helipad main body according to the landing or take-off state of the helicopter, and at the same time, under the action of the push plate, the main net frame can be automatically plugged and reinforced by the adjacent plug rods when it is in the laying down and standing up states, so as to improve the stability of the main net frame when it is laid down and stood up. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a schematic diagram of the installation structure after the embodiment of the present invention is laid down;

[0033] Figure 2 It is a schematic diagram of the structure of two adjacent main network frames after being erected according to an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the explosion of an embodiment of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the main view of an embodiment of the present invention;

[0036] Figure 5 It is a schematic structural diagram of the bottom of an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the main network frame in a top view according to an embodiment of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the main network frame of an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the assembly structure of the main screen frame, locking assembly A and locking assembly B according to an embodiment of the present invention;

[0040] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure at A in the middle;

[0041] Fig.10 This is a schematic diagram of the structure of the auxiliary net frame and the locking component A according to an embodiment of the present invention;

[0042] Fig.11 It is a structural schematic diagram of one side of the main network frame of an embodiment of the present invention.

[0043] The numbers in the figure represent: 100, apron body; 200, hydraulic push rod; 201, lifting plate;

[0044] 1. Main mesh frame; 11. Rectangular mesh; 12. Arc sliding surface; 13. Accommodating groove A; 14. Push plate; 141. Sliding rod A; 15. Inclined surface A; 16. Sliding hole A; 17. Sliding hole B; 18. Accommodating groove B; 19. L-shaped plate; 110. Straight groove A; 111. Inclined groove; 112. Straight groove B; 113. Limiting plate A; 114. Bushing; 115. Fixed shaft; 116. Limiting plate B; 117. Plug hole A; 118. Plug hole B;

[0045] 2. Auxiliary mesh frame; 21. Fan-shaped mesh; 22. Inclined surface B; 23. Ball bearing; 24. Accommodating groove C;

[0046] 3. Ejector assembly; 31. Slide plate A; 32. Spring;

[0047] 4. Insertion rod; 41. Sliding pin A; 42. Pushing block; 421. U-shaped inclined groove A; 43. Sliding pin B;

[0048] 5. Locking assembly A; 51. V-shaped member; 52. Swing arm; 53. Fixed rod; 54. Connecting rod; 55. Slider A; 551. U-shaped inclined groove B; 56. Slide plate B;

[0049] 6. Locking assembly B; 61. Connecting plate; 62. Sliding rod B; 63. Sliding rod C; 64. Counterweight; 65. Sliding block B; 651. U-shaped inclined groove C. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0051] The present invention will be further described below in conjunction with the embodiments.

[0052] Example:

[0053] See also Figure 1-Figure 11 The present invention provides a technical solution: an aluminum safety net for a helicopter pad, comprising:

[0054] The main net frames 1 are arranged in a circular array on the outside of the apron body 100, and the main net frames 1 are rotatably connected to the apron body 100. A rectangular net sheet 11 is fixedly arranged on the inside of the main net frames 1, and an arc-shaped sliding surface 12 is opened on the inside of the main net frames 1. A push plate 14 is arranged at the bottom of the main net frames 1. When driven by an external force, the push plate 14 pushes the main net frames 1 to stand up and lay down; specifically, a shaft sleeve 114 is fixedly arranged on the outside of the main net frames 1, and a fixed shaft 115 is rotatably arranged on the inside of the shaft sleeve 114. The fixed shaft 115 is fixedly arranged on the outside of the apron body 100 through a limit plate B116, and the limit plate B116 is used to limit the laying angle of the main net frame 1; and a hydraulic push rod 200 is fixedly arranged on the outside of the apron body 100, and a lifting plate 201 is fixedly arranged on the driving end of the hydraulic push rod 200, and a plurality of push plates 14 are arranged on the top of the lifting plate 201 corresponding to the main net frame 1.

[0055] The auxiliary net frame 2 is slidably mounted on the inner side of the main net frame 1 along the arc-shaped sliding surface 12. A fan-shaped net sheet 21 is fixedly arranged on the inner side of the auxiliary net frame 2. The fan-shaped net sheet 21 is automatically retracted into the inner side of the main net frame 1 by the squeezing force when the two adjacent main net frames 1 are erected.

[0056] The ejection assembly 3 is arranged on the inner side of the main mesh frame 1 and is used to push the auxiliary mesh frame 2 to slide toward the outer side of the main mesh frame 1 when the rectangular mesh sheet 11 is laid down;

[0057] The ejection assembly 3 includes a slide plate A31 which is slidably arranged inside the main screen frame 1 . A spring 32 is arranged at one end of the slide plate A31 away from the auxiliary screen frame 2 . The spring 32 is located inside the receiving groove A13 opened inside the main screen frame 1 .

[0058] An inclined surface A15 is also provided inside the main screen frame 1, and the inclined surface A15 is arranged downwardly along the sliding contact surface of the arc-shaped sliding surface 12, and is used to guide the auxiliary screen frame 2 to slide when the main screen frame 1 is laid down;

[0059] The bottoms of both sides of the auxiliary screen frame 2 are provided with inclined surfaces B22 which are parallel to the inclined surface A15, and the bottoms of the inclined surfaces B22 are provided with balls 23.

[0060] It also includes an insertion rod 4, which is slidably arranged on the inner side of the auxiliary net frame 2, following the auxiliary net frame 2 to cooperate with one side of the main net frame 1. The insertion rod 4 is driven by the push plate 14 to trigger a sliding plug-in action on the inner side of the auxiliary net frame 2, so as to reinforce two adjacent main net frames 1.

[0061] Specifically, a slide hole A16 and a slide hole B17 are provided on the inner side of the main screen frame 1, and a receiving groove B18 for connecting the slide hole A16 and the slide hole B17 is provided on the side of the arc-shaped slide surface 12 close to the auxiliary screen frame 2;

[0062] It also includes two pushing blocks 42, which are respectively slidably arranged inside the sliding hole A16 and the sliding hole B17, and are respectively used to drive the insertion rod 4 to reinforce the two adjacent main net frames 1 in the laid-down state and the erected state. The two pushing blocks 42 are triggered to slide under the drive of the push plate 14.

[0063] The insert rod 4 is arc-shaped and is arranged concentrically with the arc-shaped sliding surface 12. A sliding pin A41 is fixedly arranged on the outer side of the insert rod 4. The sliding pin A41 is slidably arranged on the outer side of the auxiliary net frame 2 through the receiving groove C24. The sliding pin A41 slides between the sliding hole A16 and the sliding hole B17 driven by the auxiliary net frame 2.

[0064] A U-shaped inclined groove A421 is provided inside the pushing block 42. The inside of the U-shaped inclined groove A421 is configured as an arc surface. The width of the U-shaped inclined groove A421 is greater than the diameter of the sliding pin A41, and is used to push the sliding pin A41 to slide inside the accommodating groove C24.

[0065] An L-shaped plate 19 is fixedly arranged at the bottom of the main net frame 1, and a straight groove A110 and an inclined groove 111 are opened inside the L-shaped plate 19, and the straight groove A110 and the inclined groove 111 are connected end to end;

[0066] A slide bar A141 is fixedly provided on the top of the push plate 14, and the slide bar A141 is slidably provided inside the straight groove A110 and the inclined groove 111. When the slide bar A141 slides to the ends of the straight groove A110 and the inclined groove 111, it drives the push block 42 inside the slide hole A16 and the slide hole B17 to slide respectively.

[0067] It also includes a locking assembly A5, which drives the push block 42 inside the slide hole A16 to slide under the drive of the slide rod A141;

[0068] The locking assembly A5 includes a V-shaped member 51 rotatably arranged on the outside of the L-shaped plate 19, the V-shaped member 51 swings under the drive of the slide bar A141, a swing arm 52 is fixedly arranged on the outside of the V-shaped member 51, the swing arm 52 is rotatably connected to one end of a connecting rod 54 through a fixed rod 53, and the other end of the connecting rod 54 is rotatably connected to a slider A55 for driving the push block 42 to slide back and forth, a slide plate B56 is fixedly arranged on the outside of the slider A55, and the slide plate B56 is slidably arranged on the inside of a limit plate A113, and the limit plate A113 is fixedly arranged at the bottom of the main net frame 1;

[0069] Among them, the slide rod A141 drives the V-shaped member 51 to rotate when sliding in and out of the inner side of the inclined groove 111, and a U-shaped inclined groove B551 is opened on the inner side of the slider A55, and a sliding pin B43 is slidably arranged on the inner side of the U-shaped inclined groove B551. The sliding pin B43 is fixedly arranged on the outer side of the pushing block 42, and is used to drive the sliding pin B43 to drive the pushing block 42 to slide back and forth.

[0070] It also includes a locking assembly B6, which drives the push block 42 inside the slide hole B17 to slide under the drive of the slide rod A141;

[0071] The locking assembly B6 includes a connecting plate 61 slidably arranged on the inner side of the L-shaped plate 19, and a sliding rod B62 and a sliding rod C63 are fixedly arranged on both sides of the connecting plate 61. The sliding rod B62 and the sliding rod C63 are respectively slidably arranged on the inner sides of the straight groove A110 and the straight groove B112. The straight groove B112 is opened on the inner side of the L-shaped plate 19, and a counterweight block 64 is fixedly arranged on the outer side of the connecting plate 61. A slider B65 for driving the pushing block 42 to slide back and forth is fixedly arranged on the outer side of the counterweight block 64. Specifically, a U-shaped inclined groove C651 is opened on the inner side of the slider B65, and a sliding pin B43 is slidably arranged on the inner side of the U-shaped inclined groove C651. The sliding pin B43 is fixedly arranged on the outer side of the pushing block 42.

[0072] A plug hole A117 and a plug hole B118 are provided on one side of the main net frame 1 away from the auxiliary net frame 2. The plug hole A117 and the plug hole B118 cooperate with the plug rod 4 when it is laid down and stood up respectively.

[0073] Principles and advantages of aluminum safety nets for helipads:

[0074] First, the main net frame 1 is rotatably installed on the outside of the apron body 100, and the lifting plate 201 is driven to rise and fall by the hydraulic push rod 200 on the outside of the apron body 100 to push the push plate 14 at the bottom of the main net frame 1 to rise and fall, so that the push plate 14 pushes the corresponding main net frame 1 to rotate on the outside of the apron body 100, so as to realize the functions of laying down and standing up the main net frame 1, and in the laying down process, the angle between the two adjacent main net frames 1 gradually increases, so that the spring 32 inside the main net frame 1 can push the slide plate A31 to slide, so that the slide plate A31 pushes the auxiliary net frame 2 to slide along the arc-shaped sliding surface 12 inside the main net frame 1, and when the main net frame 1 abuts against the outside of the limit plate B116, the laying down angle is reached, and at this time, the side of the auxiliary net frame 2 that slides out abuts against the outside of the adjacent main net frame 1, so as to realize the main net frame 1. After being laid down, the main body 100 of the helipad can be fully protected; and when the main mesh frame 1 is erected, the angle between the two adjacent main mesh frames 1 gradually becomes smaller, so that the main mesh frame 1 squeezes the outer auxiliary mesh frame 2 to slide to the inner side of the adjacent main mesh frame 1 to reset, and finally the main mesh frames 1 in the erected state are closely close to each other, so that the main body 100 of the helipad can be protected from the outside after the helicopter takes off; it is worth mentioning that an inclined surface A15 is provided on the inner side of the main mesh frame 1 along the direction of the arc-shaped sliding surface 12, and when the auxiliary mesh frame 2 and the main mesh frame 1 are in an inclined state, the auxiliary mesh frame 2 can be supported by the inclined surface A15, so that the inclined surface B22 at the bottom of the auxiliary mesh frame 2 slides along the inclined surface A15 through the ball bearing 23 under the action of gravity, thereby reducing the sliding resistance of the auxiliary mesh frame 2 and making the auxiliary mesh frame 2 slide smoothly

[0075] Its advantage is that by slidingly arranging the auxiliary net frame 2 inside the main net frame 1, when the main net frame 1 is rotated and laid down, the auxiliary net frame 2 can be driven to slide to one side by the ejection component 3 inside the main net frame 1, and the auxiliary net frame 2 slides in an arc along the arc sliding surface 12, so that the part of the auxiliary net frame 2 sliding out of the main net frame 1 is fan-shaped, so as to prevent the existence of a fan-shaped protective gap between two adjacent main net frames 1; and when the main net frame 1 is rotated and erected upward, the main net frame 1 can squeeze the auxiliary net frame 2 and automatically retract, and will not interfere with the state adjustment of the main net frame 1, so that the main net frame 1 can be rotated to adjust the lying and standing states to fully protect the apron body 100 in different states.

[0076] When the push plate 14 in the aluminum safety net for the helicopter landing pad of the present application drives the main net frame 1 to rotate downward and fall down, the push plate 14 drives the slide bar A141 to slide downward inside the straight groove A110. When the main net frame 1 is completely laid down, the slide bar A141 continues to slide downward. At this time, the slide bar A141 entering the inner side of the inclined groove 111 presses down one end of the V-shaped member 51 to rotate it, thereby driving the swing arm 52 outside the V-shaped member 51 to rotate, so that the swing arm 52 pushes the slider A55 at one end of the connecting rod 54 through the fixed rod 53 to slide at the bottom of the main net frame 1. The slider A55 drives the sliding pin B43 to move upward through the inner U-shaped inclined groove B551, thereby pushing the pushing block 42 inside the sliding hole A16 to slide upward, so that the pushing block 42 gradually approaches the sliding pin A41 outside the auxiliary net frame 2, and finally the U-shaped inclined groove A421 is located outside the sliding pin A41, and the sliding pin A41 pushes the insertion rod 4 to slide inside the auxiliary net frame 2 through the squeezing of the inner side of the U-shaped inclined groove A421. It should be noted that since the insertion rod 4 slides in an arc shape, when the insertion rod 4 slides, it will drive the sliding pin A41 to deviate in angle. The U-shaped inclined groove A421 is rotated, and the arc surface inside the U-shaped inclined groove A421 is tangent to the outside of the sliding pin A41, and the width of the U-shaped inclined groove A421 is greater than the diameter of the sliding pin A41, which can ensure that the sliding pin A41 is deflected within a certain range of angles inside the U-shaped inclined groove A421; thereby ensuring that one end of the insertion rod 4 is inserted into the side of the adjacent main net frame 1 after the main net frame 1 is laid down, and a plug hole A117 is provided on one side of the main net frame 1 for mating with the insertion rod 4 after it is laid down, so as to achieve the effect of reinforcing several main net frames 1 as a whole after the main net frame 1 is laid down; and When the slide bar A141 pushes the main net frame 1 to stand up, the slide bar A141 slides out of the inclined groove 111 to release the pressure on the V-shaped member 51, and pushes the other end of the V-shaped member 51 to rotate upward, so that the V-shaped member 51 drives the slider A55 at the end of the connecting rod 54 to slide back and reset, and then the slider A55 drives the push block 42 to automatically reset on the inside of the slide hole A16. During the reset process, the U-shaped inclined groove A421 squeezes the slide pin A41 to drive the insertion rod 4 to pull out of the inside of the socket A117 to release the reinforcement effect, thereby preventing interference with the adjustment of the main net frame 1.

[0077] It is worth noting that the above-mentioned laying down method has the following advantages:

[0078] Advantage 1: The main mesh frame 1 is driven to rotate by the slide bar A141 on the top of the push plate 14, so that the main mesh frame 1 can automatically adjust the laying down and standing up state, so as to automatically adjust the protection state of the main mesh frame 1 to the apron body 100 according to the landing and take-off state of the helicopter.

[0079] Advantage two, when the slide rod A141 drives the main mesh frame 1 to fall down, the locking assembly A5 is driven by the slide rod A141 to drive the push block 42 inside the slide hole A16 to slide, so that the push block 42 drives the insertion rod 4 on the inside of the auxiliary mesh frame 2 to slide out, and insert it into the inside of the insertion hole A117 opened on the outside of the adjacent main mesh frame 1, thereby achieving the effect of automatic reinforcement after the main mesh frame 1 is laid down.

[0080] Advantage three, by rotating the V-shaped part 51 in the locking assembly A5 to the outside of the L-shaped plate 19 and located on the outside of the inclined groove 111, when the slide rod A141 enters the inside of the inclined groove 111, it will press the V-shaped part 51 to rotate downward, and at this time, the driving push block 42 will push the insertion rod 4 out, and after insertion, under the pressing action of the slide rod A141, the stability of the push block 42 and the insertion rod 4 is guaranteed, so as to ensure the stability of the reinforcement effect.

[0081] Advantage four, when the slide rod A141 moves upward, it will push the other end of the V-shaped member 51 to rotate upward, so that the V-shaped member 51 drives the push block 42 to slide in the opposite direction inside the slide hole A16, and then drives the insertion rod 4 to slide in the opposite direction and reset, which can automatically release the reinforcement effect before driving the main mesh frame 1 to stand up.

[0082] When the slide bar A141 in the aluminum safety net for the helicopter pad of the present application drives the main net frame 1 to rotate upward and stand up, the push plate 14 pushes the slide bar A141 to slide out of the inner side of the inclined groove 111, and then slides upward on the inner side of the straight groove A110, pushing the main net frame 1 to rotate upward on the apron body 100. When the main net frame 1 is in the upright state, the slide bar A141 continues to slide along the straight groove A110 and begins to push the connecting plate 61 upward, so that the connecting plate 61 drives the outer slide bar B62 and the slide bar C63 to rotate along the straight groove A110 and the straight groove B112 respectively, so as to ensure the sliding stability of the connecting plate 61, so that the connecting plate 61 drives the outer slider B65 to slide upward, and then squeezes the sliding pin B43 to move horizontally through the U-shaped inclined groove C651 on the inner side of the slider B65, so that the sliding pin B43 The pushing block 42 on the inner side of the sliding hole B17 is pushed horizontally to drive the insertion rod 4 to slide toward the outside of the auxiliary net frame 2, and finally the end of the insertion rod 4 is inserted into the inside of the socket B118 on the outside of the adjacent main net frame 1, so that the main net frame 1 can be automatically reinforced after being adjusted to the upright state; and when the main net frame 1 is laid down, the sliding rod A141 begins to move downward to release the support for the connecting plate 61. At this time, the connecting plate 61 slides downward by relying on the gravity of the counterweight block 64, thereby driving the slider B65 to move downward, so that the slider B65 drives the sliding pin B43 to drive the pushing block 42 to slide in the opposite direction, thereby disengaging the insertion rod 4 from the inside of the socket B118, and as the sliding rod A141 continues to slide downward, the support for the main net frame 1 is gradually released, and finally the main net frame 1 is pulled down by the sliding rod A141 and rotated downward to be adjusted to the laid down state.

[0083] It is worth mentioning that the above-mentioned erection method has the following advantages:

[0084] Advantage 1: the main net frame 1 is pushed to an upright state by the continuous rise of the slide bar A141, and as the height of the slide bar A141 increases, the stability of the support of the main net frame 1 after it is erected is ensured.

[0085] Advantage two, when the main net frame 1 is erected, the locking assembly B6 can be driven by the thrust of the slide rod A141 to drive the push block 42 on the inner side of the slide hole B17 to slide, so that the push block 42 pushes the insertion rod 4 on the inner side of the auxiliary net frame 2 and inserts it into the side of the adjacent main net frame 1, thereby realizing the automatic reinforcement effect of the main net frame 1 after it is erected, and under the thrust of the push plate 14, the stability of the insertion rod 4 after insertion is guaranteed and the stability of the main net frame 1 in the erected state is improved.

[0086] Advantage three, when the slide bar A141 moves downward to adjust the main mesh frame 1 to a laid-down state, the slide bar A141 moves away from the bottom of the connecting plate 61, so that the connecting plate 61 automatically slides downward and resets through the counterweight block 64, and then the connecting plate 61 drives the slide bar B65 to automatically reset downward, so that the slide bar B65 drives the push block 42 to move the insertion rod 4 out of the inner side of the socket B118, thereby achieving the automatic release of the upright reinforcement effect when adjusted to the laid-down state to prevent interference with the adjustment of the main mesh frame 1.

[0087] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An aluminum safety net for a helicopter pad, characterized in that: include: The main net frames are arranged in a circular array outside the main body of the apron. The main net frames are rotatably connected to the main body of the apron. A rectangular net sheet is fixedly arranged inside the main net frames. An arc-shaped sliding surface is provided inside the main net frames. A push plate is arranged at the bottom of the main net frames. When driven by an external force, the push plate pushes the main net frame to stand up and lay down. The auxiliary net frame is slidably mounted on the inner side of the main net frame along the arc-shaped sliding surface, and a fan-shaped net is fixedly arranged on the inner side of the auxiliary net frame, which is automatically retracted into the inner side of the main net frame by the squeezing force when the two adjacent main net frames are erected; The ejection assembly is arranged on the inner side of the main mesh frame and is used to push the auxiliary mesh frame to slide toward the outer side of the main mesh frame when the rectangular mesh is laid down; The ejection assembly includes a slide plate A, which is slidably arranged inside the main net frame, and a spring is arranged at one end of the slide plate A away from the auxiliary net frame, and the spring is located inside the receiving groove A opened inside the main net frame; It also includes an insertion rod, which is slidably arranged inside the auxiliary net frame, follows the auxiliary net frame and cooperates with one side of the main net frame, and the insertion rod is driven by the push plate to trigger a sliding plugging action inside the auxiliary net frame, so as to reinforce two adjacent main net frames; The main net frame is provided with a sliding hole A and a sliding hole B on the inner side, and the arc-shaped sliding surface is provided with a receiving groove B for connecting the sliding hole A and the sliding hole B on the side close to the auxiliary net frame; It also includes two push blocks, which are slidably arranged inside the slide hole A and the slide hole B, respectively, and are used to drive the insertion rod to reinforce the two adjacent main net frames in the laid-down state and the erected state, and the two push blocks are triggered to slide under the drive of the push plate; The insertion rod is arc-shaped and is arranged concentrically with the arc-shaped sliding surface. A sliding pin A is fixedly arranged on the outside of the insertion rod. The sliding pin A is slidably arranged on the outside of the auxiliary net frame through the receiving groove C. The sliding pin A slides between the sliding hole A and the sliding hole B driven by the auxiliary net frame. A U-shaped inclined groove A is provided on the inner side of the pushing block, the inner side of the U-shaped inclined groove A is arranged as an arc surface, and the width of the U-shaped inclined groove A is greater than the diameter of the sliding pin A, so as to push the sliding pin A to slide inside the receiving groove C; Wherein, an L-shaped plate is fixedly arranged at the bottom of the main net frame, a straight groove A and an inclined groove are opened inside the L-shaped plate, the straight groove A and the inclined groove are connected end to end, a sliding rod A is fixedly arranged on the top of the push plate, the sliding rod A is slidably arranged inside the straight groove A and the inclined groove, and when the sliding rod A slides to the ends of the straight groove A and the inclined groove, it drives the push blocks inside the sliding holes A and B to slide respectively; It also includes a locking assembly A, which drives the push block inside the slide hole A to slide under the drive of the slide rod A, and the locking assembly A includes a V-shaped piece rotatably arranged on the outside of the L-shaped plate and a slider A slidably installed on the bottom of the main net frame, the V-shaped piece swings under the drive of the slide rod A, and is used to drive the slider A to slide back and forth, and the slider A is driven by the V-shaped piece to drive the push block to slide back and forth, and a swing arm is fixedly arranged on the outside of the V-shaped piece, and the swing arm is rotatably connected to one end of the connecting rod through a fixed rod, and the other end of the connecting rod is rotatably connected to the slider A for driving the push block to slide back and forth; The slide bar A drives the V-shaped member to rotate when sliding into and out of the inner side of the inclined groove. A U-shaped inclined groove B is provided inside the slide block A. A sliding pin B is provided inside the U-shaped inclined groove B. The sliding pin B is fixedly provided outside the push block and is used to drive the sliding pin B to drive the push block to slide back and forth. The locking assembly B is also included, and the locking assembly B drives the pushing block inside the sliding hole B to slide under the drive of the sliding rod A. The locking assembly B includes a connecting plate slidably arranged on the inner side of the L-shaped plate, and sliding rods B and sliding rods C are fixedly arranged on both sides of the connecting plate. The sliding rods B and sliding rods C are respectively slidably arranged on the inner sides of the straight grooves A and B, and the straight grooves B are opened on the inner side of the L-shaped plate. A counterweight block is fixedly arranged on the outer side of the connecting plate, and a slider B for driving the pushing block to slide reciprocally is fixedly arranged on the outer side of the counterweight block. The connecting plate slides upward under the thrust of the sliding rod A, and a U-shaped inclined groove C is opened on the inner side of the slider B. A sliding pin B is slidably arranged on the inner side of the U-shaped inclined groove C, and the sliding pin B is fixedly arranged on the outer side of the pushing block. A socket A and a socket B are opened on the side of the main net frame away from the auxiliary net frame, and the socket A and the socket B respectively cooperate with the plug rod when it is laid down and stood up.

2. The aluminum safety net for a helicopter pad according to claim 1, characterized in that: The main screen frame is also provided with an inclined surface A on the inner side thereof, and the inclined surface A is arranged downwardly along the sliding contact surface of the arc-shaped sliding surface, and is used to guide the auxiliary screen frame to slide when the main screen frame is laid down; The bottoms of both sides of the auxiliary net frame are provided with inclined surfaces B which are parallel to the inclined surface A, and the bottoms of the inclined surfaces B are provided with balls.

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