Automatic locking device for mobile parking apron

Abstract

The utility model provides an automatic locking device of mobile apron belongs to mobile apron technical field. It includes the locking pin of setting in the first deck one side, is equipped with the locking assembly of being able to when the first deck and the second deck fold and gather up with the locking pin cooperation to realize the locking or unlocking on the second deck. The first deck and the second deck are automatically completed locking and fixed after folding and gathering up, can effectively resist the high frequency vibration or inertial impact in transportation, avoid the relative motion of the first deck and the second deck, to ensure the stability of transportation, locking operation does not need manual intervention, and the operation efficiency is greatly improved, the locking between the first deck and the second deck can be quickly released, to improve the unfolding efficiency of the first deck and the second deck, is applicable to the unfolding scene frequently.

Description

Technical Field

[0001] This utility model belongs to the field of mobile helipad technology and relates to an automatic locking device for mobile helipads. Background Technology

[0002] Mobile helipads are rapidly deployable aviation ground facilities widely used in temporary takeoffs and landings, emergency rescue, and military applications. They typically consist of multiple foldable decks, which must be folded up and secured to trucks or other vehicles during transport. However, during transport, relative movements between the decks, such as vibrations and inertial swaying, can lead to structural wear, loosening of connections, or even accidental deployment, posing serious safety hazards.

[0003] Traditional latch locking uses a manual latch or buckle structure, which requires manual operation to insert the latch into the preset hole between the decks to fix it. This requires personnel to insert the latch one by one after the deck is folded, which is inefficient and has the risk of operation error. The latch and the hole are rigidly matched, and the continuous vibration during transportation can easily cause the latch to wear or loosen. In addition, the hole needs to be manually realigned after unlocking, which is difficult to meet the needs of frequent folding and unfolding. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing an automatic locking device for mobile helipads.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic locking device for a mobile helipad includes a locking pin disposed on one side of a first deck and a locking component disposed on a second deck that can engage with the locking pin to lock or unlock when the first and second decks are folded together.

[0006] The locking components and locking pins work together to automatically lock the first and second decks in place after folding and closing, effectively resisting high-frequency vibrations or inertial impacts during transportation and preventing relative movement between the first and second decks to ensure transportation stability. The locking operation requires no manual intervention, greatly improving operational efficiency. The first and second decks can also be quickly released from their locks to improve the unfolding efficiency of the first and second decks, making it suitable for frequent unfolding scenarios.

[0007] In the aforementioned automatic locking device for the mobile helipad, the locking assembly includes a locking rod hinged to the corresponding side of the second deck, a locking hook at the front end of the locking rod, and a locking drive structure connected to the locking rod that can drive it to rotate around the hinge. When the locking rod rotates clockwise and counterclockwise, the locking hook cooperates with the locking pin to achieve locking and unlocking respectively.

[0008] The locking drive structure can drive the locking rod to rotate clockwise or counterclockwise around the hinge. When the locking rod rotates clockwise, the locking hook at the front end moves toward the locking pin until it engages with the locking pin to complete the locking of the first deck and the second deck. When the locking rod rotates counterclockwise, the locking hook at the front end disengages from the locking rod, and the first deck and the second deck are released from locking.

[0009] In the aforementioned automatic locking device for mobile helipads, the locking drive structure includes an unlocking drive mechanism capable of driving the locking rod to rotate counterclockwise around the hinge and a locking drive mechanism capable of driving the locking rod to rotate clockwise around the hinge when the unlocking drive mechanism is reset.

[0010] The unlocking drive mechanism can drive the locking rod to rotate counterclockwise around the hinge, causing the locking hook to disengage from the locking rod; the locking drive mechanism can drive the locking rod to rotate clockwise around the hinge when the unlocking drive mechanism is reset, causing the locking hook to engage and fix with the locking rod. The unlocking and locking of the locking hook and the locking rod are controlled by independent mechanisms to avoid motion interference.

[0011] In the aforementioned automatic locking device for mobile helipads, the unlocking drive mechanism includes an unlocking driver disposed at the outer end of the locking bar. The output end of the unlocking driver is provided with an unlocking push head corresponding to the locking bar. The output end of the unlocking driver extends out and can drive the unlocking push head to act on the locking bar, causing it to rotate counterclockwise.

[0012] The output end of the drive cylinder extends, enabling the unlocking pusher to act on the outer end of the locking rod, converting the linear thrust into the rotational torque of the locking rod, causing the locking rod to rotate counterclockwise around the hinge to complete the unlocking operation. The output end of the drive cylinder retracts, and the unlocking pusher resets.

[0013] In the aforementioned automatic locking device for the mobile helipad, the unlocking driver is connected to the second deck via a positioning seat. The positioning seat has a rotating slot adapted to the locking rod. The locking rod is rotatably connected in the rotating slot via a hinge pin. The unlocking push head passes through the rotating slot and corresponds to the outer end of the locking rod.

[0014] The locking rod is hinged to the rotating slot of the positioning seat by a hinge pin. Its range of motion is limited to the arc trajectory of the rotating slot to prevent the locking rod from deviating from the design path during vibration. When the unlocking driver drives the unlocking push head to press down vertically along the rotating slot, the unlocking push head contacts the outer end contact surface of the locking rod to drive the locking rod to rotate counterclockwise around the hinge pin.

[0015] In the aforementioned automatic locking device for mobile helipads, the locking drive mechanism includes a locking spring disposed in a rotating groove and located at the outer end of the locking rod. The unlocking push head is located between the locking spring and the hinge pin. One end of the locking spring is connected to the rear end of the locking rod, and the other end of the locking spring is connected to the rotating groove through a first connecting shaft.

[0016] When the locking lever is in the locked position, the unlocking pusher resets and does not act on the locking lever. At this time, the locking spring is in a slightly stretched state, which can provide continuous locking force. When the locking lever needs to be unlocked, the unlocking pusher presses down and contacts the outer end of the locking lever to drive the locking lever to rotate counterclockwise. At this time, the locking spring is further stretched and stores energy. When the unlocking pusher resets, the locking spring releases energy to reset and drive the locking lever to rotate clockwise to perform the locking operation.

[0017] In the aforementioned automatic locking device for mobile helipads, a connecting groove is provided on the rear end of the locking rod, and one end of the locking spring is connected to the connecting groove via a second connecting shaft.

[0018] One end of the locking spring is set in the connecting groove through the second connecting shaft, which can prevent the locking spring from slipping laterally during vibration. The tension of the locking spring is evenly transmitted to the locking rod through the second connecting shaft, avoiding local stress concentration that could lead to breakage.

[0019] In the aforementioned automatic locking device for mobile helipads, a rotation limiting structure is also provided between the positioning seat and the locking rod.

[0020] The rotation limit structure can prevent the locking rod from rotating further when it is rotated clockwise to the locked position, ensuring that the engagement depth of the locking hook and the locking pin reaches the design value, avoiding overload protection, and the hard limit of the rotation limit structure can ensure that the engagement position of the locking hook and the locking pin is consistent each time the lock is locked.

[0021] In the aforementioned automatic locking device for mobile helipads, the rotation limiting structure includes a limiting shaft disposed within the rotation through groove and located between the unlocking pusher and the hinge pin. When the locking hook and the locking pin are locked, the outer end of the locking rod abuts against the hinge pin to form a limiting position.

[0022] When the locking lever is rotated clockwise to the locked position, the outer end of the locking lever abuts against the hinge pin to form a limit, preventing the locking lever from rotating further. This ensures that the engagement depth of the locking hook and the locking pin reaches the design value, avoiding overload protection. Furthermore, the hard limit of the limiting shaft ensures that the engagement position of the locking hook and the locking pin is consistent each time the lock is engaged.

[0023] In the aforementioned automatic locking device for the mobile helipad, the locking pin is connected to the first deck via a locking pin seat.

[0024] The locking pin is detachably connected to the first deck via the locking pin seat, forming a replaceable independent module that is easy to assemble and disassemble and maintain.

[0025] Compared with existing technologies, the advantages of this invention are as follows: 1. The first and second decks automatically lock and fix themselves after folding and closing, effectively resisting high-frequency vibrations or inertial impacts during transportation and preventing relative movement between the first and second decks to ensure transportation stability. 2. The locking operation requires no manual intervention, significantly improving operational efficiency. 3. The locking between the first and second decks can be quickly released to improve the deployment efficiency of both decks, making it suitable for frequent deployment scenarios. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure provided by this utility model; Figure 2 This is a schematic diagram of the locking assembly; Figure 3 This is a cross-sectional view of the locking component; Figure 4 This is a schematic diagram of the locking drive mechanism; Figure 5 This is a schematic diagram of the unlocking drive mechanism.

[0027] In the figure, 1 is the first deck, 2 is the locking pin, 3 is the second deck, 4 is the locking assembly, 5 is the locking rod, 6 is the locking hook, 7 is the locking drive structure, 8 is the unlocking drive mechanism, 9 is the locking position drive mechanism, 10 is the unlocking driver, 11 is the unlocking push head, 12 is the drive cylinder, 13 is the positioning seat, 14 is the rotating through groove, 15 is the hinge pin, 16 is the locking spring, 17 is the first connecting shaft, 18 is the connecting shaft positioning groove, 19 is the connecting groove, 20 is the second connecting shaft, 21 is the rotation limiting structure, 22 is the limiting shaft, and 23 is the locking pin seat. Detailed Implementation

[0028] like Figures 1-5 As shown, an automatic locking device for a mobile helipad includes a locking pin 2 disposed on one side of a first deck 1, and a locking component 4 disposed on a second deck 3 that can cooperate with the locking pin 2 to lock or unlock when the first deck 1 and the second deck 3 are folded together.

[0029] The first deck 1 and the second deck 3 are hinged together.

[0030] In this invention, when the mobile helipad is in transport state, the first deck 1 and the second deck 3 are folded together. The locking component 4 on the second deck 3 cooperates with the locking pin 2 on the first deck 1 to achieve locking and fixing between the first deck 1 and the second deck 3. When the mobile helipad needs to be unfolded, the locking component 4 cooperates with the locking pin 2 to first perform the unlocking operation between the first deck 1 and the second deck 3.

[0031] The locking component 4 and the locking pin 2 work together to automatically lock and fix the first deck 1 and the second deck 3 after folding and closing. This can effectively resist high-frequency vibration or inertial impact during transportation and prevent relative movement between the first deck 1 and the second deck 3, thus ensuring the stability of transportation. Moreover, the locking operation does not require manual intervention, which greatly improves the efficiency of operation. The first deck 1 and the second deck 3 can also be quickly unlocked to improve the unfolding efficiency of the first deck 1 and the second deck 3, which is suitable for frequent unfolding scenarios.

[0032] Specifically, combining Figures 1-5 As shown, the locking assembly 4 includes a locking rod 5 hinged to the corresponding side of the second deck 3. A locking hook 6 is provided at the front end of the locking rod 5. The locking rod 5 is connected to a locking drive structure 7 that can drive it to rotate around the hinge. When the locking rod 5 rotates clockwise and counterclockwise, the locking hook 6 cooperates with the locking pin 2 to achieve locking and unlocking respectively.

[0033] The locking drive structure 7 can drive the locking rod 5 to rotate clockwise or counterclockwise around the hinge. When the locking rod 5 rotates clockwise, the locking hook 6 at the front end moves toward the locking pin 2 until it engages with the locking pin 2 to complete the locking and fixing of the first deck 1 and the second deck 3. When the locking rod 5 rotates counterclockwise, the locking hook 6 at the front end disengages from the locking rod 5, and the first deck 1 and the second deck 3 are released from locking and fixing.

[0034] Specifically, combining Figures 1-5 As shown, the locking drive structure 7 includes an unlocking drive mechanism 8 that can drive the locking rod 5 to rotate counterclockwise around the hinge and a locking drive mechanism 9 that can drive the locking rod 5 to rotate clockwise around the hinge when the unlocking drive mechanism 8 is reset.

[0035] The unlocking drive mechanism 8 can drive the locking rod 5 to rotate counterclockwise around the hinge, so that the locking hook 6 disengages from the locking rod 5; the locking position drive mechanism 9 can drive the locking rod 5 to rotate clockwise around the hinge when the unlocking drive mechanism 8 is reset, so that the locking hook 6 and the locking rod 5 are engaged and fixed. The unlocking and locking of the locking hook 6 and the locking rod 5 are controlled by independent mechanisms to avoid motion interference.

[0036] Specifically, combining Figures 1-5 As shown, the unlocking drive mechanism 8 includes an unlocking driver 10 disposed at the outer end of the locking rod 5. The output end of the unlocking driver 10 is provided with an unlocking push head 11 corresponding to the locking rod 5. The output end of the unlocking driver 10 extends out and can drive the unlocking push head 11 to act on the locking rod 5 to make it rotate counterclockwise.

[0037] The unlocking actuator 10 includes a drive cylinder 12, which is controlled by a solenoid valve.

[0038] When the solenoid valve is energized, it controls the output end of the drive cylinder 12 to extend, which enables the unlocking push head 11 to act on the outer end of the locking rod 5, converting the linear thrust into the rotational torque of the locking rod 5, causing the locking rod 5 to rotate counterclockwise around the hinge to complete the unlocking operation.

[0039] When the solenoid valve is de-energized, the output end of the drive cylinder 12 retracts, and the unlock pusher 11 is reset.

[0040] Specifically, combining Figures 1-5 As shown, the unlocking driver 10 is connected to the second deck 3 via the positioning seat 13. The positioning seat 13 has a rotating through groove 14 adapted to the locking rod 5. The locking rod 5 is rotatably connected in the rotating through groove 14 via the hinge pin 15. The unlocking push head 11 passes through the rotating through groove 14 and corresponds to the outer end of the locking rod 5.

[0041] The locking rod 5 is hinged to the rotating through groove 14 of the positioning seat 13 by the hinge pin 15. Its range of motion is limited to the arc trajectory of the rotating through groove 14 to prevent the locking rod 5 from deviating from the design path during vibration.

[0042] The unlocking push head 11 is inserted into the rotating through groove 14. The axis of the unlocking push head 11 is precisely aligned with the outer end contact surface of the locking rod 5. When the unlocking driver 10 drives the unlocking push head 11 to press down vertically along the rotating through groove 14, the unlocking push head 11 contacts the outer end contact surface of the locking rod 5 to drive the locking rod 5 to rotate counterclockwise around the hinge pin 15.

[0043] Specifically, combining Figures 3-5 As shown, the locking drive mechanism 9 includes a locking spring 16 disposed in the rotating through groove 14 and located at the outer end of the locking rod 5. The unlocking push head 11 is located between the locking spring 16 and the hinge pin 15. One end of the locking spring 16 is connected to the rear end of the locking rod 5, and the other end of the locking spring 16 is connected to the rotating through groove 14 through the first connecting shaft 17.

[0044] The locking spring 16 is a tension spring, and its preload is adjusted by the installation position of the first connecting shaft 17. Several connecting shaft positioning grooves 18 distributed along the width direction are provided on both sides of the rotating through groove 14 to achieve positioning and fixing of the first connecting shaft 17 at different installation positions.

[0045] When the locking lever 5 is in the locked position, the unlocking pusher 11 resets and does not act on the locking lever 5. At this time, the locking spring 16 is in a slightly stretched state, which can provide a continuous locking force. When the locking lever 5 needs to be unlocked, the unlocking pusher 11 presses down and contacts the outer end of the locking lever 5 to drive the locking lever 5 to rotate counterclockwise. At this time, the locking spring 16 is further stretched and stores energy. When the unlocking pusher 11 resets, the locking spring 16 releases energy and resets to drive the locking lever 5 to rotate clockwise to perform the locking operation.

[0046] By adjusting the position of the first connecting shaft 17, the locking force required for different deck weights can be adapted, and the linear force-displacement characteristics of the locking spring 16 ensure the consistency of the locking action.

[0047] Specifically, combining Figure 4 and Figure 5 As shown, a connecting groove 19 is provided on the rear end of the locking rod 5, and one end of the locking spring 16 is connected to the connecting groove 19 through the second connecting shaft 20.

[0048] One end of the locking spring 16 is set in the connecting groove 19 through the second connecting shaft 20, which can prevent the locking spring 16 from slipping laterally during vibration. The tension of the locking spring 16 is evenly transmitted to the locking rod 5 through the second connecting shaft 20, avoiding local stress concentration that could lead to breakage.

[0049] Preferably, combined with Figures 2-5 As shown, a rotation limiting structure 21 is also provided between the positioning seat 13 and the locking rod 5. The rotation limiting structure 21 includes a limiting shaft 22 disposed in the rotation through groove 14 and located between the unlocking push head 11 and the hinge pin 15. When the locking hook 6 and the locking pin 2 are locked, the outer end of the locking rod 5 abuts against the hinge pin 15 to form a limit.

[0050] When the locking rod 5 is rotated clockwise to the locked position, the outer end of the locking rod 5 abuts against the hinge pin 15 to form a limit, preventing the locking rod 5 from rotating further, ensuring that the engagement depth of the locking hook 6 and the locking pin 2 reaches the design value, avoiding overload protection, and the hard limit of the limit shaft 22 can ensure that the engagement position of the locking hook 6 and the locking pin 2 is consistent each time the lock is engaged.

[0051] Specifically, combining Figures 1-3 As shown, the locking pin 2 is connected to the first deck 1 via the locking pin seat 23.

[0052] The locking pin 2 is detachably connected to the first deck 1 via the locking pin seat 23, forming a replaceable independent module that is easy to assemble and disassemble and maintain.

[0053] The working principle of this utility model is as follows: When the apron is in transport state, the first deck 1 and the second deck 3 are folded together, and the locking rod 5 is in the locked position. At this time, the solenoid valve is de-energized, the unlocking push head 11 is reset and there is no contact force between it and the locking rod 5. The locking spring 16 is in a slightly stretched state, which can provide continuous locking force to ensure the locking position is fixed between the locking pin 2 and the locking hook 6. When the locking rod 5 needs to be unlocked, the solenoid valve is energized to control the output end of the drive cylinder 12 to extend, so that the unlocking push head 11 acts on the outer end of the locking rod 5 to drive the locking rod 5 to rotate counterclockwise, so that the locking hook 6 disengages from the locking rod 5 to release the locking position. When the locking lever 5 rotates counterclockwise, the locking spring 16 is further stretched and stores energy. When the solenoid valve is de-energized and the unlocking pusher 11 is reset, the locking spring 16 releases energy to reset and drive the locking lever 5 to rotate clockwise to perform the locking operation.

[0054] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0055] Although this article frequently uses terms such as first deck 1, locking pin 2, second deck 3, locking assembly 4, locking rod 5, locking hook 6, locking drive structure 7, unlocking drive mechanism 8, locking position drive mechanism 9, unlocking driver 10, unlocking push head 11, drive cylinder 12, positioning seat 13, rotating through groove 14, hinge pin 15, locking spring 16, first connecting shaft 17, connecting shaft positioning groove 18, connecting groove 19, second connecting shaft 20, rotating limiting structure 21, limiting shaft 22, locking pin seat 23, etc., these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An automatic locking device for a mobile helipad, characterized in that, Includes a locking pin (2) provided on one side of the first deck (1), and a locking component (4) provided on the second deck (3) that can cooperate with the locking pin (2) to lock or unlock when the first deck (1) and the second deck (3) are folded together. The locking assembly (4) includes a locking rod (5) hinged to the corresponding side of the second deck (3), and a locking hook (6) provided at the front end of the locking rod (5). The locking rod (5) is connected to a locking drive structure (7) that can drive it to rotate around the hinge. When the locking rod (5) rotates clockwise and counterclockwise, the locking hook (6) cooperates with the locking pin (2) to lock and unlock respectively. The locking drive structure (7) includes an unlocking drive mechanism (8) that can drive the locking rod (5) to rotate counterclockwise around the hinge and a locking drive mechanism (9) that can drive the locking rod (5) to rotate clockwise around the hinge when the unlocking drive mechanism (8) is reset.

2. The automatic locking device for a mobile helipad according to claim 1, characterized in that, The unlocking drive mechanism (8) includes an unlocking driver (10) disposed at the outer end of the locking rod (5). The output end of the unlocking driver (10) is provided with an unlocking push head (11) corresponding to the locking rod (5). The output end of the unlocking driver (10) extends out and can drive the unlocking push head (11) to act on the locking rod (5) to make it rotate counterclockwise.

3. The automatic locking device for a mobile helipad according to claim 2, characterized in that, The unlocking driver (10) is connected to the second deck (3) via a positioning seat (13). The positioning seat (13) has a rotating through groove (14) adapted to the locking rod (5). The locking rod (5) is rotatably connected to the rotating through groove (14) via a hinge pin (15). The unlocking pusher (11) passes through the rotating through groove (14) and corresponds to the outer end of the locking rod (5).

4. The automatic locking device for a mobile helipad according to claim 3, characterized in that, The locking drive mechanism (9) includes a locking spring (16) disposed in the rotating through groove (14) and located at the outer end of the locking rod (5). The unlocking push head (11) is located between the locking spring (16) and the hinge pin (15). One end of the locking spring (16) is connected to the rear end of the locking rod (5), and the other end of the locking spring (16) is connected to the rotating through groove (14) through the first connecting shaft (17).

5. The automatic locking device for a mobile helipad according to claim 4, characterized in that, The locking rod (5) has a connecting groove (19) on its rear end, and one end of the locking spring (16) is connected to the connecting groove (19) through the second connecting shaft (20).

6. The automatic locking device for a mobile helipad according to claim 3, characterized in that, A rotation limiting structure (21) is also provided between the positioning seat (13) and the locking rod (5).

7. The automatic locking device for a mobile helipad according to claim 6, characterized in that, The rotation limiting structure (21) includes a limiting shaft (22) disposed in the rotation through groove (14) and located between the unlocking push head (11) and the hinge pin (15). When the locking hook (6) and the locking pin (2) are locked, the outer end of the locking rod (5) abuts against the hinge pin (15) to form a limiting position.

8. The automatic locking device for a mobile helipad according to any one of claims 1-7, characterized in that, The locking pin (2) is connected to the first deck (1) via the locking pin seat (23).

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