Turnover type freight guide rail opening supporting and closing locking mechanism
By introducing structural limits of the lock tongue and limit seat and automatic support of the torsion spring of the strut are solved in the flipped freight rail, the stability problem when the guide rail is closed, and stable locking and convenient operation are achieved in complex environments.
Patent Information
- Application Number
- CN202411225969.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2024-12-10
AI Technical Summary
The lack of limiting measures when existing flipped cargo rails are closed, resulting in possible vibration, abnormal noise or even opening in complex flight environments.
A mechanism including an operating rod, a support assembly, a locking assembly and a control assembly is designed. Through the structural limit of the locking tongue and the limit seat, the locking assembly and the torsion spring of the support rod are coordinated to achieve stable closing and automatic support of the freight guide rail. .
It improves the stability of the freight rail when closed, reduces vibration and abnormal noise, ensures that the rail does not open accidentally, and provides a convenient operating structure when opened, reducing the burden of manual operation.
Smart Images
Figure CN119099851A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of air cargo systems, and in particular to an opening support and closing locking mechanism for a flip-type cargo rail. Background Art
[0002] The cargo loading and unloading positioning rail is a guiding and limiting device in the aircraft cargo system composed of multiple sections. It is installed on both sides of the aircraft cargo hold floor and cargo bridge door. During air transportation, the side guide rail structure can limit the cargo laterally and vertically to keep the cargo in a stable loading state.
[0003] In the prior art, there is a flip-type freight rail, which includes a bottom plate trough and a floor panel. The floor trough is installed on the floor of the aircraft cargo hold, and is continuously arranged in multiple sections along the center axis of the aircraft, and is sunk into the cargo hold floor. The floor trough opens upward, and the floor panel is hinged to the edge of the floor trough on one side. The floor panel is rotated to be flush with the floor to close the opening. The corresponding two floor panel hinge lines deviate from each other, and after rotating outward, a guide track is formed. A hydraulic structure is provided in the floor trough to drive the floor panel to rotate, which is generally a hydraulic rod device.
[0004] With regard to the above-mentioned prior art, in order to maintain the flatness of the floor in the closed state, no limiting measures are set, and the structure is placed on the floor only by its own weight. In a complex flight environment, vibration, abnormal noise, or even opening may occur. Summary of the invention
[0005] In order to increase the stability of the freight rail when opening and closing, the present application provides an opening support and closing locking mechanism for a flip-type freight rail.
[0006] The following technical solutions are adopted: A flip freight rail opening support and closing locking mechanism comprises: an operating rod; a supporting assembly for controlling the rotation of a floor panel; a locking assembly comprising a first bracket, a locking tongue and a limiting seat; the first bracket is connected to the inner side of the floor panel, and the limiting seat is arranged in a floor groove; the locking tongue is slidably connected to the first bracket, and the locking tongue can pass through the first bracket and enter the limiting seat; a control assembly comprises a control rod, a telescopic rod, a first elastic member and a second bracket; the second bracket is connected to the inner side of the floor panel; the control rod is rotatably connected to the second bracket; a through groove is provided on the floor panel, and the control rod extends into the through groove; the control rod is detachably connected to the operating rod; the telescopic rod is connected to the control rod, and the first elastic member makes the telescopic rod always have a tendency to extend; the telescopic rod is connected to the locking tongue via a linkage rod.
[0007] By adopting the above technical solution, when the flip cargo rail is closed, the lock tongue is located in the limit seat, forming a structural limit to prevent the flip cargo rail from opening, and realizing closed locking. Improve the stability when closed. Reduce the vibration and abnormal noise that may occur in a complex flight environment, and prevent the rail from opening accidentally. When it needs to be opened, the lock tongue is disengaged from the limit seat by controlling the movement of the locking assembly through the operating rod from the outside through the control assembly. In this way, a convenient operating structure that can keep the surface of the floor panel flat is provided.
[0008] Optionally, a sliding groove is provided through the middle of the first bracket, and the locking tongue is slidably connected to the sliding groove; the limiting seat includes a locking cross bar, and the locking tongue can move up and down and abut against the locking cross bar, and the locking tongue is provided with a rounded corner for abutting against the locking cross bar.
[0009] By adopting the above technical solution, the lock tongue abuts against the locking cross bar with the rounded corner from top to bottom, and the relative force causes the lock tongue to slide into the slide groove, which facilitates the control of the lock tongue.
[0010] Optionally, a slot is formed on an edge of the first bracket close to the locking cross bar.
[0011] By adopting the above technical solution, the card slot cooperates with the extended locking tongue to form a C-shaped structure, making the connection between the first bracket and the locking cross bar more stable.
[0012] Optionally, the telescopic rod is provided with a first protrusion, the locking tongue is provided with a second protrusion, and the first protrusion and the second protrusion are connected via the linkage rod.
[0013] Optionally, the control rod is bent and initially immersed in the through groove.
[0014] Optionally, the support assembly includes a strut bracket, a strut and a strut torsion spring; the strut bracket is connected to the inner side of the floor panel; one end of the strut is hinged to the strut bracket; the strut torsion spring enables the strut to always rotate in a direction away from the limiting seat.
[0015] By adopting the above technical solution, the support rod is hinged through the support rod bracket, and the support rod torsion spring provides a force to rotate away from the limit seat to support the floor panel. The support rod and the support rod torsion spring are used together, so that the floor panel can be automatically propped up and remain stable when opened, reducing the burden of manual operation.
[0016] Optionally, the support assembly further includes a stopper; the stopper is arranged on the moving path of the end of the support rod, and the stopper is located on a side away from the limiting seat.
[0017] By adopting the above technical solution, the stopper is arranged on the moving path of the end of the support rod to limit the rotation range of the support rod, thereby preventing damage or instability caused by excessive rotation of the support rod and ensuring stable support of the floor panel in the open state.
[0018] Optionally, the support assembly further comprises a support rod slide for sliding the end of the support rod.
[0019] By adopting the above technical solution, the end of the support rod slides in the support rod slideway, thereby achieving smooth movement of the support rod.
[0020] Optionally, a roller is provided at the end of the support rod.
[0021] By adopting the above technical solution, the friction and noise during the movement of the support rod are reduced, and the stability and reliability of the movement of the support rod are improved.
[0022] Optionally, the linkage rod extends into the movement path of the support rod.
[0023] By adopting the above technical solution, this design makes it possible for the operation of the control rod to simultaneously affect the locking and unlocking of the lock tongue and the supporting action of the support rod, thereby improving the integration and operating efficiency of the mechanism.
[0024] In summary, the present application includes at least one of the following beneficial effects: 1. The opening support and closing locking mechanism of the flip-type freight rail can effectively support the opened freight rail and reliably lock the closed freight rail; 2. The support rod is powered by the support rod torsion spring, so that the floor panel can automatically prop up and remain stable when opened.
[0025] 3. The travel is reversible through the linkage rod. When the freight rail is flipped open using the operating lever, the floor lock is unlocked and the support rod assembly automatically forms a support. When the freight rail is closed, the support rod self-locking structure is broken and the floor lock is closed and locked with the floor surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 1 is a schematic diagram of the cross-sectional structure of the present embodiment; Figure 3 This is a schematic diagram of the structure behind the hidden floor panels and floor troughs; Figure 4 yes Figure 3 Rear view structure diagram; Figure 5 is a schematic diagram of the cross-sectional structure of the locking assembly; Figure 6 It is a schematic diagram showing the cross-sectional structure of a control component; Figure 7 It is a schematic diagram of the cross-sectional structure of the support component.
[0027] Explanation of reference numerals: 1, floor panel; 11, hinged fixed side; 12, floor trough; 13, through groove; 2, operating lever; 21, holding ball; 22, plug post; 3, control assembly; 31, control lever; 311, slot; 312, rotating shaft; 32, control bracket; 33, telescopic rod; 331, first protrusion; 332, first plug hole; 34, control spring; 35, linkage rod; 4, locking assembly; 41, locking bracket ; 411, slide groove; 412, give way groove; 413, connecting piece; 414, slot; 42, locking tongue; 421, second protrusion; 422, second plug hole; 43, limit seat; 431, locking cross bar; 5, support assembly; 51, support rod bracket; 52, support rod torsion spring; 53, support rod; 531, roller; 54, support rod slide; 541, smooth section; 542, lifting section; 543, support section; 544, stop block. DETAILED DESCRIPTION
[0028] The following is combined with Figure 1 To Attachment Figure 7 This application is described in further detail.
[0029] The cargo rail in the prior art includes a bottom plate trough and a floor panel 1. The floor trough 12 is installed on the floor of the aircraft cargo hold, and is continuously arranged in multiple sections along the center axis of the aircraft, and is sunk into the cargo hold floor. The floor trough 12 opens upward, and the floor panel 1 is hinged to the edge of the floor trough 12 on one side through a hinged fixed side 11. The floor panel 1 is rotated to be flush with the floor to close the opening. The hinge lines of the two corresponding floor panels 1 deviate from each other, and form a guide track after rotating outward. A supporting structure for driving the floor panel 1 to rotate is provided in the floor trough 12. However, the prior art often has no limiting measures when it is closed, and only relies on the self-weight of the structure to cover the floor trough 12. Vibration, abnormal noise, and even opening may occur in a complex flight environment.
[0030] Therefore, in order to increase the closing reliability and stability of the freight rail after closing, a flip-type freight rail opening support and closing locking mechanism is provided.
[0031] Reference Figure 1 and Figure 2 , which includes a support assembly 5, a locking assembly 4, a control assembly 3, and an operating rod 2. The support assembly 5 is used to support the floor panel 1 to rotate to an open state. The locking assembly 4 is used to lock the floor panel 1 to rotate to a closed state. The control assembly 3 is used to control the opening or closing of the locking assembly 4. The control assembly 3 is operated from the outside by the operating rod 2. The cooperation of the support assembly 5, the locking assembly 4 and the control assembly 3 makes the structure of the freight rail more stable when it is opened or closed.
[0032] Reference Figures 3 to 5 Specifically, the locking assembly 4 includes a first bracket, a locking tongue 42 and a limiting seat 43. The first bracket is connected to the inner side of the floor panel 1, and the limiting seat 43 is arranged in the floor groove 12. The first bracket can move with the floor panel 1 in the direction close to or away from the limiting seat 43. The locking tongue 42 is slidably connected in the first bracket, and the locking tongue 42 can pass through the first bracket in the direction close to the limiting seat 43. When the first bracket is located at the position closest to the limiting seat 43, the floor panel 1 covers the floor groove 12, and the locking tongue 42 can slide and insert into the limiting seat 43 to limit the rotation of the floor panel 1.
[0033] Reference Figure 5 Furthermore, the first bracket is fixedly connected to the inner side of the floor panel 1 by means of bolts, rivets, gluing, etc. A slide groove 411 is provided through the middle of the first bracket, and the locking tongue 42 is slidably connected to the slide groove 411. One end of the locking tongue 42 can slide out of the slide groove 411. The limiting seat 43 includes a seat body and a locking cross bar 431. The seat body is a U-shaped structure, and the bottom of the seat body is fixedly connected to the bottom inner wall of the floor trough body 12 by means of bolts, rivets, gluing, etc. The locking cross bar 431 is connected to the top position of the seat body. When the floor panel 1 is covered on the floor trough body 12, one end of the first bracket abuts against the locking cross bar 431, and the slide groove 411 is located below the locking cross bar 431.
[0034] Reference Figure 5 Furthermore, a slot 414 is provided at one end of the first bracket abutting against the locking cross bar 431. The slot 414 is an obtuse chamfer, and the slot 414 cooperates with the extended locking tongue 42 to form a C-shaped structure, so that the connection between the first bracket and the locking cross bar 431 is more stable.
[0035] Reference Figure 5 Furthermore, the first bracket includes a main frame and two parallel connecting pieces 413, the slide groove 411 is opened on the main frame, and the main frame is connected to the ground panel 1 through the connecting piece 413 to make way for the control component 3.
[0036] Furthermore, multiple groups of locking components 4 can be provided, and the multiple groups of locking components 4 are arranged linearly and spaced apart along the length direction of the floor panel 1. The multiple groups of locking components 4 are evenly distributed on both sides of the control component 3 and are controlled by the control component 3 simultaneously.
[0037] Reference Figure 4 and Figure 6Specifically, in order to better control the movement of the lock tongue 42 and ensure the flatness of the outer surface of the floor panel 1. The control assembly 3 includes a control rod 31, a telescopic rod 33, a first elastic member and a second bracket. The second bracket is connected to the inner side of the floor panel 1, and the control rod 31 is rotatably connected to the second bracket, and the rotation direction of the control rod 31 is perpendicular to the plane where the floor panel 1 is located. A through slot 13 is provided on the floor panel 1, and the control rod 31 is inserted into the through slot 13 and rotates in the through slot 13. A slot 311 is coaxially provided at one end of the control rod 31 facing outward. A plug column 22 is provided at the end of the operating rod 2, and the operating rod 2 is a rod body structure independent of the control assembly 3. The operating rod 2 is inserted into the slot 311 through the plug column 22 from the outside of the mechanism, so that the control rod 31 is connected to the operating rod 2, and the operating rod 2 is used to drive the control rod 31 to rotate. The telescopic rod 33 is connected to the end of the control rod 31 away from the slot 311, and the first elastic member makes the telescopic rod 33 always have a tendency to stretch. A first protrusion 331 is provided at the end of the telescopic rod 33, and the first protrusion 331 is provided perpendicular to the plane where the floor panel 1 is located. A linkage rod 35 is provided on the first protrusion 331. A second protrusion 421 is provided at the bottom of the lock tongue 42, and the second protrusions 421 are parallel to the first protrusion 331. A clearance groove 412 for the second protrusion 421 to slide is provided at the bottom of the first bracket. A first plug hole 332 is provided on the first protrusion 331, and the linkage rod 35 penetrates the first plug hole 332. A second plug hole 422 is provided on the second protrusion 421, and the linkage rod 35 penetrates the second plug hole 422. When the ground needs to be unlocked, the operating rod 2 is used to rotate the control rod 31, which drives the telescopic rod 33 to move, and the first protrusion 331 and the linkage rod 35 make the plurality of second protrusions 421 and the lock tongue 42 move at the same time to achieve unlocking. Compression occurs during the rotation of the telescopic rod 33 to perform adaptive adjustment. The bottom edge of the locking tongue 42, which is against the locking cross bar 431, is provided with a rounded corner. When the first bracket moves to the position closest to the limit seat 43, that is, the floor panel 1 is covered on the floor slot 12. The locking tongue 42 abuts the locking cross bar 431 from top to bottom with the rounded corner, and the relative force causes the locking tongue 42 to slide into the slide groove 411 until the locking tongue 42 passes through the locking cross bar 431. Under the action of the first elastic member, the locking tongue 42 passes through the slide groove 411 and abuts against the lower surface of the locking cross bar 431, thereby limiting the rotation of the floor panel 1. When the floor panel 1 is covered, the structure is more stable, avoiding vibration, abnormal noise or even opening in a complex flight environment.
[0038] Furthermore, the control rod 31 is bent at an obtuse angle, and when the control rod 31 is in the initial position, it is immersed in the plane where the upper surface of the floor panel 1 is located, so as to ensure that the surface of the floor panel 1 is flat.
[0039] Furthermore, the first elastic member is a spring sleeved on the outside of the telescopic rod 33 .
[0040] Reference Figure 4 and Figure 7 Specifically, the support assembly 5 includes a strut bracket 51, a strut 53 and a strut torsion spring 52. The strut bracket 51 is fixed to the inner side of the floor panel 1 by means of bolts, rivets, gluing, etc. One end of the strut 53 is hinged to the strut bracket 51, and the other end extends in a direction away from the hinge point. When the floor panel 1 is in a closed state, the strut 53 is close to the hinged fixed side 11, and the angle between the strut 53 and the floor panel 1 is an acute angle. When the floor panel 1 is in an open state, the strut 53 is away from the hinged fixed side 11, and the angle between the strut 53 and the floor panel 1 is an obtuse angle. The strut torsion spring 52 is arranged on the strut bracket 51 and connected to the strut 53, so that the strut 53 always has a tendency to rotate in a direction away from the hinged fixed side 11.
[0041] Furthermore, the support assembly 5 further includes a stopper 544. The stopper 544 is arranged at the limit position when the support rod 53 and the floor panel 1 form an obtuse angle, and the support rod 53 abuts against the stopper 544 after being unfolded, thereby limiting the position. In other embodiments, the support rod 53 can be limited by abutting against the inner wall of the floor slot 12 or other methods.
[0042] Reference Figure 7 Furthermore, the support assembly 5 also includes a pole slide 54. The pole slide 54 includes a continuous smooth section 541, a lifting section 542 and a support section 543. A stopper 544 is arranged at the end of the support section 543. The support section 543 is higher than the smooth section 541, and the lifting section 542 is inclined to smoothly transition between the smooth section 541 and the support section 543. The pole slide 54 enables the pole 53 to be deployed more smoothly.
[0043] Furthermore, a roller 531 is rotatably connected to the end of the support rod 53 , and the roller 531 abuts against the surface of the support rod slideway 54 .
[0044] When the floor surface of the flip freight guide rail is opened, the support rod bracket 51 will be lifted up along with the floor panel 1. Under the action of the support rod torsion spring 52, the support rod 53 rotates until it collides with the stopper 544 on the support rod slide 54. At this time, the support rod 53 forms an angle with the horizontal plane, and the structure is self-locking under the action of the gravity of the floor panel 1 and the elastic force of the torsion spring, thereby realizing the opening support of the flip freight guide rail.
[0045] In order to make the operation more convenient, the linkage rod 35 extends into the movement path of the support rod 53 , and the linkage rod 35 is located on a side of the support rod 53 close to the stopper 544 .
[0046] The implementation principle of the opening support and closing locking mechanism of a flip-type freight rail in the embodiment of the present application is as follows: During the opening process, when the flip freight rail is closed and needs to be opened, use the operating rod 2 to insert it into the jack of the control rod 31 and turn the operating rod 2 toward the hinge side. When the operating rod 2 is basically perpendicular to the floor panel 1, the lock tongue 42 is completely separated from the locking cross bar 431 and unlocked and reaches the limit position. Continue to push the operating rod 2 forward, and the floor panel 1 together with the support rod bracket 51 can be lifted up. Under the action of the support rod torsion spring 52, the support rod 53 can slide to the specified position along the support rod slide 54. When the support rod 53 reaches the limit position and abuts against the stopper 544, it forms a certain angle with the horizontal plane, forming a self-locking structure to support the floor panel 1. When the operating rod 2 is pulled out, the whole process of opening the flip freight rail is completed.
[0047] During the closing process, use the operating rod 2 to insert the control rod 31, and turn the operating rod 2 toward the opening side of the floor panel 1. The operating rod 2 will drive the control rod 31 to rotate relative to the floor panel 1, the unlocking spring will be compressed, and the unlocking spring compression rod will slide with the linkage rod 35 to the hinge side along with the lock tongue 42, and the lock tongue 42 will slide to the locked position, and the linkage rod 35 will move the support rod 53 to destroy the angle between the support rod 53 and the horizontal plane until the self-locking structure is destroyed. Remove the operating rod 2, press the floor panel 1 downward, and the lock tongue 42 will contact and collide with the locking cross bar 431. Under the pressure of the locking cross bar 431, the lock tongue 42 will move a certain distance from the locked position to the balanced position, but will not exceed the balanced position. Under the action of the unlocking spring assembly, the lock tongue 42 will be completely limited with the locking cross bar 431 when the floor panel 1 is flush.
[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A flip-type freight rail opening support and closing locking mechanism, characterized in that: include: Operating lever (2); A support assembly (5) for controlling the rotation of the floor panel (1); The locking assembly (4) comprises a first bracket, a locking tongue (42) and a limiting seat (43); the first bracket is connected to the inner side of the floor panel (1), and the limiting seat (43) is arranged in the floor groove (12); the locking tongue (42) is slidably connected to the first bracket, and the locking tongue (42) can pass through the first bracket and enter the limiting seat (43); A control assembly (3) comprises a control rod (31), a telescopic rod (33), a first elastic member and a second bracket; the second bracket is connected to the inner side of a floor panel (1); the control rod (31) is rotatably connected to the second bracket; a through slot (13) is formed through the floor panel (1), and the control rod (31) is inserted into the through slot (13); the control rod (31) is detachably connected to the operating rod (2); the telescopic rod (33) is connected to the control rod (31), and the first elastic member enables the telescopic rod (33) to always have a tendency to extend; the telescopic rod (33) is connected to the locking tongue (42) via a linkage rod (35).
2. The flip-type freight rail opening support and closing locking mechanism according to claim 1, characterized in that: A sliding groove (411) is provided in the middle of the first bracket, and the locking tongue (42) is slidably connected to the sliding groove (411); the limiting seat (43) includes a locking cross bar (431), and the locking tongue (42) can abut against the locking cross bar (431) after moving up and down, and the locking tongue (42) is provided with a rounded corner for abutting against the locking cross bar (431).
3. The opening support and closing locking mechanism of the flip type freight rail according to claim 2, characterized in that: A locking groove (414) is formed on an edge of the first bracket close to the locking cross bar (431).
4. The flip-type freight rail opening support and closing locking mechanism according to claim 1, characterized in that: The telescopic rod (33) is provided with a first protruding piece (331), the locking tongue (42) is provided with a second protruding piece (421), and the first protruding piece (331) and the second protruding piece (421) are connected via the linkage rod (35).
5. The flip-type freight rail opening support and closing locking mechanism according to claim 1, characterized in that: The control rod (31) is bent and initially immersed in the through groove (13).
6. The opening support and closing locking mechanism of the flip type freight rail according to any one of claims 1 to 5, characterized in that: The support assembly (5) comprises a support rod bracket (51), a support rod (53) and a support rod torsion spring (52); the support rod bracket (51) is connected to the inner side of the floor panel (1); one end of the support rod (53) is hinged to the support rod bracket (51); and the support rod torsion spring (52) enables the support rod (53) to always rotate in a direction away from the limiting seat (43).
7. The opening support and closing locking mechanism of the flip type freight rail according to claim 6, characterized in that: The support assembly (5) further comprises a stopper (544); the stopper (544) is arranged on a moving path of the end of the support rod (53), and the stopper (544) is located on a side away from the limiting seat (43).
8. The opening support and closing locking mechanism of the flip type freight rail according to claim 6, characterized in that: The support assembly (5) further comprises a support rod slideway (54) for sliding the end of the support rod (53).
9. The opening support and closing locking mechanism of the flip type freight rail according to claim 6, characterized in that: A roller (531) is provided at the end of the support rod (53).
10. The opening support and closing locking mechanism of the flip type freight rail according to claim 6, characterized in that: The linkage rod (35) extends into the movement path of the support rod (53).