EVTOL aircraft general assembly safety frame

Abstract

The utility model discloses an eVTOL aircraft general assembly safety frame which comprises two bases, stand columns are installed on the bases, cross beams are installed between the two stand columns through connecting supports matched with fasteners, pulley assemblies are installed on the cross beams, inclined struts are connected between the cross beams and the stand columns and between the stand columns and the bases, and the inclined struts are connected between the cross beams and the stand columns and between the stand columns and the bases. The cross beams and the stand columns are all formed by connecting base beams in cooperation with fasteners. The safety frame is high in safety, a safety belt of a final assembly worker is hung on the safety frame, the safety belt is kept to have certain tightness, when the final assembly worker falls down from an assembly platform, the safety frame hangs the worker in the air through the safety belt, the worker cannot fall onto the ground, and the safety of the final assembly worker is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation equipment, and in particular to an eVTOL aircraft assembly safety frame. Background Art

[0002] The eVTOL (Electric Vertical Takeoff and Landing) electric vertical takeoff and landing aircraft uses an electric propulsion system instead of an internal combustion engine, which gives it many advantages and unique qualities. The most prominent advantages are energy saving and environmental protection, high efficiency and low energy consumption, while achieving near-zero emissions, very low noise and vibration levels, and good ride comfort. It is a truly environmentally friendly aircraft. In addition, it is safe and reliable (no explosion or fuel leakage), simple structure, easy operation and use, good maintainability / low cost, and good economy. There are also many advantages in design: the overall layout is flexible, and the optimal layout and unconventional / innovative layout can be adopted; aircraft with extraordinary performance can be designed to meet special purpose needs, etc.

[0003] The current mainstream eVTOL products at home and abroad are 4-5 seats, weighing about 2 tons, with a fuselage and wing height of about 2 meters, and a tail height of 4 meters. During the final assembly of eVTOL, it is necessary to install fasteners on the upper surface of the fuselage and dock between components. The final assembly personnel face the problem of high-altitude operations and need to protect the safety of the final assembly personnel. For the final assembly of existing aircraft, for large aircraft, the size is large and the height of the final assembly platform is high. The safety belts of general staff can be fixed on the railings of the final assembly platform. When people fall, there is enough buffer height to prevent people from landing directly on the ground. For small aircraft, the height is lower, and personnel can complete the assembly on the ground. When the eVTOL aircraft is assembled, the height from the ground is about 2 meters, and the height of the working platform is low, but the personnel cannot complete it on the ground. If a person falls, the length of the safety belt itself will cause the person to fall to the ground and cause injuries. Therefore, an eVTOL aircraft final assembly safety frame is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an eVTOL aircraft assembly safety frame to solve the problems mentioned in the background technology. To achieve the above purpose, the utility model provides the following technical solutions: an eVTOL aircraft assembly safety frame, including a base, two bases, a column installed on the base, a crossbeam installed between the two columns through a connecting bracket and fasteners, a pulley assembly installed on the crossbeam, diagonal braces are connected between the crossbeam and the column, and between the column and the base, and the crossbeam and the column are connected by a base beam and fasteners.

[0005] Preferably, the base includes a pedestal, casters are installed at the bottom of the pedestal, a column connecting plate is installed in the middle of the upper end of the pedestal, diagonal brace connecting plates are provided on both sides of the column connecting plate, the diagonal brace connecting plate is installed at the upper end of the pedestal, the diagonal brace connecting plate is connected to one end of the diagonal brace, the other end of the diagonal brace is connected to the column, and the column connecting plate is connected to the bottom end of the column.

[0006] Preferably, the base beam comprises a reinforcing tube, the reinforcing tube is a frame structure, both ends of the reinforcing tube are connected to end plates, the bottom of the reinforcing tube is connected to an I-beam, and the pulley assembly is installed on the I-beam corresponding to the crossbeam.

[0007] Preferably, the pulley assembly includes a vertical plate, two of which are provided and placed adjacent to each other, a groove is opened at the bottom of the vertical plate, a safety buckle hook is installed between the two grooves, a connecting column is provided above the safety buckle hook, and the two ends of the connecting column are respectively connected to the two vertical plates, and a plurality of bearing assemblies are installed at the inner upper end of each of the vertical plates, a safety pin is provided between the bearing assemblies, and the safety pin is installed on the vertical plate.

[0008] Preferably, the end plates of adjacent base beams are connected by fasteners, and the adjacent I-beams are connected by connecting plates.

[0009] Preferably, the base includes two I-beams, and the two I-beams are adjacent to each other.

[0010] Preferably, the fasteners include bolts and nuts.

[0011] The technical effects and advantages of the utility model: the safety rack has high safety: the safety belt of the assembler is hung on the safety rack, and the safety belt is kept at a certain tightness. When the assembler falls from the assembly platform, the safety rack hangs the person in the air through the safety belt, and the person will not fall to the ground, thereby protecting the safety of the assembler;

[0012] Easy to use: casters with locking function are installed under the base of the general assembly safety frame, which can be easily moved and fixed. At the same time, the columns and beams are composed of basic unit base beams, which are connected by fasteners and can be easily disassembled. When the general assembly is completed, it can be disassembled to reduce the occupation of the site;

[0013] Low cost: The general assembly safety frame is welded with steel structure. Steel pipes, I-beams, etc. are all low-cost profile structures. At the same time, the steel structure has high density and the weight of the general assembly safety frame is heavy. When the safety belts of the general assembly personnel are hung on the safety frame, the stability of the general assembly safety frame can be ensured;

[0014] High work efficiency: The pulley assembly connected to the safety belt can slide back and forth conveniently on the I-beam on the beam. When working in different positions, the pulley can slide to the corresponding work station, avoiding the operator from frequently changing the stuck points of the safety belt, and achieving high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric drawing of the utility model;

[0016] Figure 2 It is a partial view of the connection area between the column and the beam of the utility model;

[0017] Figure 3 It is an axonometric drawing of the base of the utility model;

[0018] Figure 4 It is an axonometric drawing of the base beam of the utility model;

[0019] Figure 5 It is an axonometric view of the pulley assembly of the utility model;

[0020] Figure 6 It is a partial view of the connection between two base beams on the crossbeam of the utility model;

[0021] Figure 7 This is a schematic diagram of the relative position of the utility model and the eVTOL aircraft during final assembly.

[0022] In the figure, 1. assembly safety frame; 11. column; 101. base beam; 1011. end plate; 1012. reinforcement pipe; 1013. I-beam; 12. cross beam; 121. connecting plate; 13. base; 131. column connecting plate; 132. diagonal brace connecting plate; 133. caster; 134. base; 14. diagonal brace; 15. pulley assembly; 151. vertical plate; 152. safety buckle hook; 153. bearing assembly; 154. safety pin; 155. connecting column; 16. connecting bracket; 17. fastener; 2. eVTOL aircraft. DETAILED DESCRIPTION

[0023] In order to make the technical means for realizing the utility model, creative features, objectives and effects easy to understand, the utility model is further explained below in conjunction with specific diagrams. In the description of the utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection or a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two components.

[0024] Example

[0025] like Figure 7As shown, the relationship between the final assembly safety rack 1 and the eVTOL aircraft 2 is to prevent the final assembly safety rack 1 from colliding with the eVTOL aircraft 2 during movement, thereby causing damage to the eVTOL aircraft 2. Therefore, the height of the final assembly safety rack 1 needs to be greater than the highest point of the eVTOL aircraft and leave a certain safety margin, which is 0.5 meters in this example. The span of the final assembly safety rack 1 needs to be greater than the length of the eVTOL aircraft 2, which is 2 meters in this example.

[0026] like Figure 1 As shown, the final assembly safety frame 1 includes a column 11, a beam 12, a base 13, a diagonal brace 14, and a pulley assembly 15; wherein two bases 13 are provided, on which a column 11 is mounted, a beam 12 is mounted between the two columns 11, and a pulley assembly 15 is mounted on the beam 12. The base 13 supports the entire final assembly safety frame 1, and its direction is perpendicular to the direction of the beam 12, ensuring a large span between the supporting points on the ground, so that the entire final assembly safety frame 1 will not fall over when subjected to lateral force from the final assembly personnel, thus ensuring safety. The column 11 props up the beam 12 to the required height and provides support for the beam 12. A pulley assembly 15 is mounted on the beam 12 to provide support for the pulley assembly 15, and the pulley assembly 15 is provided for the safety belt of the final assembly personnel to be clamped, meeting the personnel safety protection requirements. The diagonal brace 14 is supported between the cross beam 12 and the column 11, and between the column 11 and the base 13, so as to improve the overall structural strength and rigidity and the stability of the assembly safety rack 1. The diagonal brace 14 is made of standard square profiles, which are cut according to the shape, and then welded with a flat plate at the end, and then connected with the cross beam 12, the column 11 and the base 13 by fasteners 17. The cross beam 12 and the column 11 are spliced ​​by standard base beams 101. The base beam 101 is used as a basic unit, and fasteners 17 are used to connect the cross beam 12 and the column 11, which can effectively reduce the manufacturing cost and the reliability of assembly. At the same time, it can also be used as the expandability of the assembly safety rack 1. For example, the number of base beams 101 can be adjusted to adjust the size of the assembly safety rack 1 to adapt to the use of aircraft of different sizes.

[0027] like Figure 2 As shown, the cross beam 12 and the column 11 are connected at the intersection by a connecting bracket 16. The connecting bracket 16 is made of steel plates welded together and does not require secondary processing, thereby reducing manufacturing costs. The connecting positions of the fasteners 17 corresponding to the cross beam 12 and the column 11 are designed with connecting holes to facilitate the installation and disassembly between the cross beam 12 and the column 11.

[0028] like Figure 3As shown, the base 13 includes a column connecting plate 131, a diagonal brace connecting plate 132, a caster 133, and a base 134; the base 134 is provided with a caster 133 at the bottom, the column connecting plate 131 is provided at the middle of the upper end of the base 134, the column connecting plate 131 is provided with diagonal brace connecting plates 132 on both sides of the column connecting plate 131, and the diagonal brace connecting plate 132 is installed at the upper end of the base 134. The base 134 includes two I-beams as a foundation to bear all loads. The column connecting plate 131 and the diagonal brace connecting plate 132 connect two adjacent I-beams of the base 134 together to form a main structure. The column connecting plate 131 is connected to the bottom of the column 11 to provide support for the column 11, and the diagonal brace connecting plate 132 is connected to the diagonal brace 14 to improve the stability of the column 11. The caster 133 is installed on the base 134, and the caster 133 has a locking and unlocking function. When the assembly safety rack 1 needs to be moved, the caster 133 is unlocked. After moving into position, the casters 133 are locked to keep the entire assembly safety frame 1 fixed.

[0029] like Figure 4 As shown, the base beam 101 is a basic unit constituting the cross beam 12 and the column 11. The assembly of the column 11 and the cross beam 12 is completed by splicing the base beam 101. The base beam 101 includes an end plate 1011, a reinforcing tube 1012, and an I-beam 1013. The two ends of the reinforcing tube 1012 are connected to the end plate 1011, and the bottom of the reinforcing tube 1012 is connected to the I-beam 1013. The reinforcing tube 1012 is a spatial welded frame structure to improve the rigidity of the entire base beam 101. The fastener connection holes on the end plates 1011 on both sides are in the same position, which can ensure that the fasteners 17 can be connected to each other. The I-beam 1013 constitutes the track of the pulley assembly 15, and the pulley assembly 15 can slide on it.

[0030] like Figure 5As shown, the pulley assembly 15 includes a vertical plate 151, a safety buckle hook 152, a bearing assembly 153, a safety pin 154, and a connecting column 155; the bearing assembly 153 is installed on the vertical plates 151 on both sides, and a certain gap is reserved in the middle. The outer circle of the bearing assembly 153 contacts the lower edge of the I-beam 1013 on the crossbeam 12 and slides on the lower edge. The vertical plate 151 is provided with two pieces, which are two steel plates, connected together by the middle connecting column 155. The bottom safety buckle hook 152 is welded in the groove at the bottom of the vertical plate 151 to form a stable structure. The safety buckle hook 152 is located below the connecting column 155 for the assembly personnel to hang the safety belt. In this embodiment, according to the weight of the personnel and the maximum lateral tension angle formed by the safety belt, and then through the weight and size of the assembly safety frame 1, it can be calculated that under the limit state, it can be used by 4 people. In this example, 4 pulley assemblies 15 are designed. According to the above calculation method, the size and weight can be increased, and the assembly safety frame 1 for more people can be designed. The safety pin 154 is a threaded bolt, which is installed on the vertical plate 151 through threads. When the bearing assembly 153 fails, it can ensure that the pulley assembly 15 is still stuck on the lower edge of the I-beam 1013 to prevent the pulley assembly 15 from falling and injuring the aircraft or assemblers.

[0031] like Figure 6 As shown, the end plates 1011 of adjacent base beams 101 are connected by fasteners 17, and the I-beams 1013 of the two base beams 101 are connected at the upper part by connecting plates 121, connecting only the upper area, so that the lower space remains flat, which can ensure that the pulley assembly 15 can slide smoothly on the entire crossbeam 12, ensuring the scope of use. The fasteners 17 are bolts and nuts, which connect the end plates 1011 of the base beam 101, the connecting plates 121 and the I-beams 113 together through threaded cooperation. When disassembly is required, it is convenient to disassemble.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An eVTOL aircraft assembly safety frame, comprising a base, characterized in that: There are two bases, and columns are installed on the base. A crossbeam is installed between the two columns through a connecting bracket and fasteners. A pulley assembly is installed on the crossbeam. Diagonal braces are connected between the crossbeam and the columns, and between the columns and the base. The crossbeam and the columns are connected by a base beam and fasteners.

2. The eVTOL aircraft assembly safety rack according to claim 1, characterized in that: The base includes a pedestal, casters are installed at the bottom of the pedestal, a column connecting plate is installed at the middle of the upper end of the pedestal, diagonal brace connecting plates are provided on both sides of the column connecting plate, the diagonal brace connecting plate is installed at the upper end of the pedestal, the diagonal brace connecting plate is connected to one end of the diagonal brace, the other end of the diagonal brace is connected to the column, and the column connecting plate is connected to the bottom end of the column.

3. The eVTOL aircraft assembly safety rack according to claim 1, characterized in that: The base beam comprises a reinforcement tube, the reinforcement tube is a frame structure, both ends of the reinforcement tube are connected to end plates, the bottom of the reinforcement tube is connected to an I-beam, and the pulley assembly is installed on the I-beam corresponding to the crossbeam.

4. The eVTOL aircraft assembly safety rack according to claim 1, characterized in that: The pulley assembly includes a vertical plate, two of which are provided and placed adjacent to each other, a groove is opened at the bottom of the vertical plate, a safety buckle hook is installed between the two grooves, a connecting column is provided above the safety buckle hook, and the two ends of the connecting column are respectively connected to the two vertical plates, and a plurality of bearing assemblies are installed at the inner upper end of each vertical plate, a safety pin is provided between the bearing assemblies, and the safety pin is installed on the vertical plate.

5. The eVTOL aircraft assembly safety rack according to claim 3, characterized in that: The end plates of adjacent base beams are connected by fasteners, and the adjacent I-beams are connected by connecting plates.

6. The eVTOL aircraft assembly safety rack according to claim 2, characterized in that: The base includes two I-beams, and the two I-beams are adjacent to each other.

7. The eVTOL aircraft assembly safety rack according to claim 5, characterized in that: The fasteners include bolts and nuts.

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