Mechanical two-way limiting device of air freight system
By designing an integrated mechanical two-way limiting device, the problem of low degree of integration of limiting devices in air cargo systems is solved, the integration of transmission and limiting functions is achieved, and the reliability and economicality of the system is improved.
Patent Information
- Application Number
- CN202422636783.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In air cargo systems, the degree of integration of mechanical two-way limiting devices is low, resulting in excessive use of components and limited space, affecting system reliability and economy.
A mechanical bidirectional limiting device integrating transmission and limiting functions is designed, adopting a sunken mounting base and roller structure, combining the first lock head and the second lock head of the cross-locking to realize the heading reverse heading and vertical limiting, and the transmission and limiting functions are realized through the lock head snap.
It improves the degree of component integration of the freight system, reduces loading height, enhances the reliability and economy of the system, and simplifies the installation and maintenance process.
Smart Images
Figure CN223187675U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of air cargo transportation and relates to a mechanical two-way limiting device for an air cargo transportation system. Background Art
[0002] In the air cargo system, the reliable restraint of containerized air cargo units has always been a key factor in the reliability of the air cargo system. As a key mechanical two-way restraint device in the air cargo system, it is used to provide reliable restraint of the heading, counter-heading and vertical directions of the air cargo container units. It is fixedly installed on the aircraft floor or mounting bracket. When the container is restrained, the two-way restraint lock itself can transfer the various loads on the container during restraint to the load-bearing parts of the aircraft body. However, in the air cargo system, a transmission device is required to be used in conjunction with the two-way restraint lock to transport the air cargo container units in the heading and counter-heading directions, which makes the air cargo system use more components and has a low degree of integration. Utility Model Content
[0003] The purpose of the present utility model is to overcome the shortcomings of the above-mentioned prior art and provide a mechanical two-way limiting device for an air cargo system, which integrates transmission and limiting functions in one, can realize heading reverse and vertical limiting and can realize transmission function, thereby enhancing the degree of integration of cargo system components and improving the reliability of the cargo system.
[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0005] A mechanical two-way restraint device for an air cargo system includes a mounting base;
[0006] The front and rear ends of the mounting base are respectively rotatably connected with rollers, and a mounting groove is provided between the front and rear ends of the mounting base. A two-way limit structure is provided in the mounting groove. The height of the roller is lower than the height when the two-way limit structure is opened. When the two-way limit structure is closed, the top is flush with or lower than the top surface of the mounting base.
[0007] Preferably, mounting grooves are provided at the front and rear ends of the mounting base, the roller is rotatably connected to the inside of the mounting groove, and the roller part protrudes from the top surface of the mounting base.
[0008] Preferably, the roller is hingedly mounted on the mounting base via a roller pin, and the mounting direction of the roller pin is the left-right direction of the mounting base.
[0009] Preferably, the two-way limiting structure includes a first lock head and a second lock head, the bottoms of the first lock head and the second lock head are hinged on the mounting base, and are connected to the mounting base by a first lock head torsion spring and a second lock head torsion spring respectively. A through hole is provided in the center of the second lock head, and the first lock head passes through the through hole of the second lock head to form a cross-interlocking structure.
[0010] Preferably, the intersection surface of the first lock head and the second lock head is an inclined surface, and the two inclined surfaces of the first lock head and the second lock head fit together to form surface contact when they intersect.
[0011] Preferably, the top width of the first lock head is greater than the bottom width of the second lock head.
[0012] Preferably, when the first lock head and the second lock head intersect, the opening angle with the mounting base is greater than 90°.
[0013] Preferably, a vertical connecting plate is provided on the mounting base, a through hole is provided on the connecting plate, the lock buckle is connected to the through hole, and the front end of the lock buckle passes through the through hole and is located above the first lock after buckling.
[0014] Preferably, the bottom of the first lock is hinged to the mounting base through the first lock pin, the first lock torsion spring is sleeved on the first lock pin, the bottom of the second lock is hinged to the mounting base through the second lock pin, and the second lock torsion spring is sleeved on the second lock pin.
[0015] Preferably, the mounting base is provided with mounting grooves at the mounting positions of the first lock head and the second lock head, the first lock head and the second lock head are located in the mounting grooves, the first lock head and the second lock head in the middle cancel the interlocking state, and when they are buckled into the grooves, the top surface is flush with or lower than the top surface of the mounting base.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This utility model addresses the low level of component integration and limited installation space in existing air cargo systems by providing a mechanical two-way locking device. Two roller transmission devices are hingedly connected to the front and rear of the mounting base, and a mechanical two-way lock is hingedly connected within a groove in the middle of the mounting base, enabling both transmission and position limiting functions. The device boasts a compact structure and a rational layout, thereby improving the integration, reliability, and economy of the cargo system. The device integrates both transmission and position limiting functions, enabling both reverse heading and vertical position limiting, as well as transmission. This enhances the integration of cargo system components and improves the reliability of the cargo system.
[0018] Furthermore, the mechanical two-way limiting device adopts a sunken design, which can minimize the loading height of the aviation container, effectively increase the cargo loading height, and further improve the economy of the freight system. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of the mechanical two-way limiting device for the air cargo system of the utility model;
[0020] Figure 2This is a schematic diagram of the first lock structure of the mechanical two-way limit device of the air cargo system;
[0021] Figure 3 This is a schematic diagram of the second lock structure of the mechanical two-way limit device of the air cargo system;
[0022] Figure 4 It is a schematic diagram of the shell structure of a mechanical two-way limit device for an air cargo system.
[0023] Among them: 1-rolling rod, 2-mounting base, 3-lock buckle, 4-fixing bolt, 5-first lock torsion spring, 6-first lock pin, 7-first lock, 8-second lock, 9-second lock torsion spring, 10-second lock pin, 11-stick pin. DETAILED DESCRIPTION
[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.
[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected, electrically connected, or able to communicate with each other; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internally connected between two elements or an interactive relationship between two elements. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model.
[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.
[0028] like Figure 1 As shown, the mechanical two-way limiting device of the air cargo system described in the utility model mainly includes a roller 1, a mounting base 2, a lock buckle 3, a fixing bolt 4, a first lock torsion spring 5, a first lock pin 6, a first lock 7, a second lock 8, a second lock torsion spring 9, a second lock pin 10 and a stick pin 11.
[0029] Roller rods 1 are rotatably mounted on mounting base 2. In this embodiment, two roller rods 1 are located at the front and rear ends of mounting base 2, respectively. These roller rods 1 are configured to provide a transmission function. Roller rods 1 are hingedly mounted to mounting base 2 via roller pins 11, which are oriented left and right relative to mounting base 2. Mounting grooves are provided at the front and rear ends of mounting base 2. Roller pins 11 are fixedly sunken and rotatably connected within the mounting grooves of mounting base 2, ensuring that only half of roller rod 1 protrudes from the top surface of mounting base 2. This minimizes loading height and does not affect the bidirectional restraint process.
[0030] The first lock 7 and the second lock 8 form a bidirectional retaining mechanism. The bottom of the first lock 7 is hinged to the mounting base 2 via a first lock pin 6. A first lock torsion spring 5 is mounted on the first lock pin 6. The ends of the first lock torsion spring 5 are connected to the mounting base 2 and the first lock 7, respectively. The first lock torsion spring 5 is used to permanently secure the first lock 7 to the mounting base 2. The bottom of the second lock 8 is hinged to the mounting base 2 via a second lock pin 10. A second lock torsion spring 9 is mounted on the second lock pin 10. The ends of the second lock torsion spring 9 are connected to the mounting base 2 and the second lock 8, respectively. The second lock torsion spring 9 is used to permanently secure the second lock 8 to the mounting base 2.
[0031] like Figure 3 As shown, a through hole is provided in the center of the second lock head 8, through which the first lock head 7 can pass. After the first lock head 7 passes through the through hole of the second lock head 8, a cross-interlocking structure is formed between the first lock head 7 and the second lock head 8, as shown in FIG. Figure 2 and Figure 3 As shown, the intersection surface of the first lock head 7 and the second lock head 8 is an inclined surface, so that the two inclined surfaces of the first lock head 7 and the second lock head 8 fit together when they intersect, forming surface contact, and when the first lock head 7 and the second lock head 8 intersect, the opening angle with the mounting base 2 is greater than 90°, so the first lock head 7 and the second lock head 8 form an interlocking state after crossing.
[0032] When the first lock 7 and the second lock 8 are engaged, the first lock 7 and the second lock 8 are engaged, and the first lock 7 and the second lock 8 are engaged, so that the first lock 7 and the second lock 8 are engaged. When the mechanical two-way lock device needs to limit the air cargo container unit, the lock buckle 3 is removed from the through hole, the first lock 7 is not restricted, and the first lock 7 and the second lock 8 are bounced upward to form a cross state for two-way limiting.
[0033] like Figure 4The figure shows the structure of the mounting base 2 according to this embodiment. The mounting base 2 is provided with mounting grooves at the mounting locations of the roller rods 1 at both ends and the first and second lock heads 7 and 8 in the middle. The roller rods 1 are located in the mounting grooves, as are the first and second lock heads 7 and 8 in the middle. The first and second lock heads 7 and 8 in the middle are no longer interlocked, and when engaged in the grooves, their top surfaces are flush with or lower than the top surface of the mounting base 2. This ensures that the first and second lock heads 7 and 8, when engaged, do not interfere with the passage of air cargo containers. The mounting base 2 adopts a sunken groove design, which significantly reduces the working surface height, thereby increasing the system's loadable cargo height. This improves the system's economic efficiency.
[0034] The mounting base 2 is provided with threaded holes near both ends and the middle position, and the fixing bolts 4 are used to install the mounting base 2 on the aircraft beam through the threaded holes. The middle threaded hole is located in the mounting groove, and countersunk holes are provided on the top of the threaded holes near both ends. After the fixing bolt 4 is installed, the top bolt head of the fixing bolt 4 is flush with or lower than the top of the countersunk hole. The countersunk hole on the top of the countersunk hole is used to wrap the top bolt head of the fixing bolt 4 to prevent the top bolt head of the fixing bolt 4 from extending out of the top surface of the mounting base 2 and affecting the movement of the air cargo container unit.
[0035] The mounting base 2 is also provided with a through hole or a groove in the empty area outside the mounting groove. The through hole or the groove can reduce the weight of the mechanical two-way lock device without affecting the operation of the mechanical two-way lock device.
[0036] When the above-mentioned mechanical two-way lock device is installed in the aircraft cabin, the mounting base 2 is installed on the aircraft crossbeam by means of fixing bolts 4 passing through threaded holes. The line connecting the front and rear ends of the mounting base 2 is parallel to the aircraft heading, and the first lock head 7 and the second lock head 8 are facing the heading and the counter-heading respectively.
[0037] First, the first lock 7 and the second lock 8 are fastened in the installation groove and kept in the fastened state by the lock buckle 3. The air cargo container unit is moved to a fixed position by the roller 1, and the first lock 7 and the second lock 8 are opened to perform bidirectional limiting on the front and rear air cargo container units.
[0038] To open the bidirectional restraint mechanism, manually pull the lock catch 3, which releases from the top of the first lock 7. The first lock 7 rotates around the first lock pin 6 under the clockwise torque of the first lock torsion spring 5. Simultaneously, the second lock rotates around the second lock pin 10 under the clockwise torque of the second lock torsion spring 9. The first and second locks 7 and 8 rotate to the locked position, forming a cross-interlocked state. The torque of the torsion springs keeps the first and second locks 7 and 8 locked. At this point, the working surfaces of the first and second locks 7 and 8 can provide reliable restraint for the container in both the direction opposite to the aircraft's course and vertically.
[0039] When the two-way limit-movement structure needs to be engaged, press the first lock head 7 and the second lock head 8 at the same time. When the first lock head 7 and the second lock head 8 are pressed into the installation groove, manually pull the lock head buckle 3 back to the top of the first lock head 7 to lock the first lock head 7. The first lock head 7 limits and locks the second lock head 8 through the protruding part on the upper part of the lock head. At this time, the rollers 1 installed before and after the mounting base 2 can provide a rolling transmission function, and the device is used as a transmission device. The structure is simple, easy to disassemble, and the limit is reliable. In addition to meeting the basic functions of the two-way lock, a transmission function is also added. This improves the integration, economy, and reliability of the freight system components.
[0040] This utility model integrates a mechanical two-way lock and a rod transmission unit to simultaneously perform both transmission and position limiting functions. The mounting base 2 features a grooved design and is fixedly mounted on the aircraft floor. Two roller transmission units are hingedly connected to the front and rear of the mounting base 2. A mechanical two-way lock is hingedly mounted within a groove in the center of the mounting base 2, performing both transmission and position limiting functions. This compact structure and rational layout minimize the loading height of the aircraft container, thereby improving the integration, reliability, and cost-effectiveness of the freight system.
[0041] The mechanical two-way lock is hinged via two rotating shafts and a mounting base 2. When restraint is required, the two-way lock is pulled up, allowing the first lock head 7 and the second lock head 8 to engage and lock. To release the restraint, the lock head clip 3 is removed. The transmission device adopts a sunken design and is installed on the floor of the unmanned vehicle cabin. This allows for transmission without increasing the loading height, resulting in a compact structure and easy installation.
[0042] The two-way limit lock features a sunken design and is fixed to the floor of the drone cabin. Rollers 1 are installed on either side of the lock. This lock allows the front and rear containers to be positioned along the aircraft's course, while also performing two functions: a compact structure, ease of use, and rapid maintenance.
[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0044] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this patent should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein from the preceding claims is not a disclaimer of such subject matter, nor should it be considered that the applicant did not consider such subject matter to be part of the disclosed utility model subject matter.
Claims
1. A mechanical two-way limit device for an air cargo system, characterized in that: including a mounting base (2); The front and rear ends of the mounting base (2) are respectively rotatably connected to rollers (1), a mounting groove is provided between the front and rear ends of the mounting base (2), a two-way limit structure is provided in the mounting groove, the height of the roller (1) is lower than the height when the two-way limit structure is open, and when the two-way limit structure is closed, the top of the roller is flush with or lower than the top surface of the mounting base (2).
2. The mechanical two-way restraint device for an air cargo system according to claim 1, characterized in that: Mounting grooves are provided at the front and rear ends of the mounting base (2), and the roller (1) is connected to the inside of the mounting groove in a sinking rotation manner, and the roller (1) partially protrudes from the top surface of the mounting base (2).
3. The mechanical two-way restraint device for an air cargo system according to claim 1, characterized in that: The roller (1) is hingedly mounted on the mounting base (2) via a roller pin (11), and the mounting direction of the roller pin (11) is the left-right direction of the mounting base (2).
4. The mechanical two-way restraint device for an air cargo system according to claim 1, characterized in that: The bidirectional limiting structure comprises a first lock head (7) and a second lock head (8), the bottoms of the first lock head (7) and the second lock head (8) are hinged on the mounting base (2), and are connected to the mounting base (2) by a first lock head torsion spring (5) and a second lock head torsion spring (9), respectively; a through hole is provided at the center of the second lock head (8), and the first lock head (7) passes through the through hole of the second lock head (8) to form a cross-interlocking structure.
5. The mechanical two-way restraint device for an air cargo system according to claim 4, characterized in that: The intersection surface of the first lock head (7) and the second lock head (8) is an inclined surface. When the first lock head (7) and the second lock head (8) intersect, the two inclined surfaces fit together to form surface contact.
6. The mechanical two-way restraint device for an air cargo system according to claim 4, characterized in that: The top width of the first lock head (7) is greater than the bottom width of the second lock head (8).
7. The mechanical two-way restraint device for an air cargo system according to claim 4, characterized in that: When the first lock head (7) and the second lock head (8) intersect, the opening angle with the mounting base (2) is greater than 90°.
8. The mechanical two-way restraint device for an air cargo system according to claim 4, characterized in that: A vertical connecting plate is provided on the mounting base (2), a through hole is provided on the connecting plate, the lock buckle (3) is connected to the through hole, and the front end of the lock buckle (3) passes through the through hole and is located above the first lock (7) after buckling.
9. The mechanical two-way restraint device for an air cargo system according to claim 4, characterized in that: The bottom of the first lock (7) is hinged to the mounting base (2) through the first lock pin (6), the first lock torsion spring (5) is sleeved on the first lock pin (6), the bottom of the second lock (8) is hinged to the mounting base (2) through the second lock pin (10), and the second lock torsion spring (9) is sleeved on the second lock pin (10).
10. The mechanical two-way restraint device for an air cargo system according to claim 4, characterized in that: The mounting base (2) is provided with a mounting groove at the mounting position of the first lock head (7) and the second lock head (8), the first lock head (7) and the second lock head (8) are located in the mounting groove, the first lock head (7) and the second lock head (8) are canceled from the interlocking state, and when they are buckled into the groove, the top surface is flush with or lower than the top surface of the mounting base (2).