A robot arm joint mounting structure
The integrated design of the arm joint installation structure solves the problems of heavy weight and complicated assembly in the existing technology, achieving lightweight and efficient assembly and improving the overall performance of the manned aircraft.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZERO GRAVITY NANJING AIRCRAFT IND CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-06-02
AI Technical Summary
The existing manned aircraft arm joint structure is heavy and the assembly process is complicated, resulting in increased overall weight and low assembly efficiency.
The integrated boom joint installation structure uses fixed mounting blocks and connectors to form an integrated structure, and uses reinforcing ribs to improve stability. Combined with gaskets and structural adhesive to fill gaps, it achieves a tight connection between the boom and the boom connector.
It reduced the overall weight of the boom joint, simplified the assembly process, improved assembly efficiency and stability, and extended the service life of the device.
Smart Images

Figure CN224311973U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aircraft technology, specifically to an arm joint mounting structure. Background Technology
[0002] In recent years, with the rapid development of cities and the explosive growth of population in large cities, existing modes of transportation can no longer meet people's needs. In daily life, short-distance transportation or passenger transport often uses ground transportation, such as buses, cars, and trucks. These modes of transportation are often limited by ground roads and frequently experience traffic congestion. Therefore, there is an urgent need to develop new modes of transportation to solve existing traffic problems.
[0003] In recent years, with the deepening of low-altitude airspace reform and management, low-altitude transportation is gradually moving from science fiction to reality. Low-altitude transportation is the core of my country's low-altitude economic development, an emerging transportation mode, and an important component of the future transportation system. Manned aircraft can be widely used in urban transportation, airport connections, tourist routes, intercity connections, and many other fields. Furthermore, with advancements in battery technology and flight control algorithms, the safety and efficiency of low-altitude manned aircraft are continuously improving, and their market prospects are optimistic, with rapid growth expected in the coming years.
[0004] However, existing manned aircraft often suffer from problems such as heavy weight and cumbersome assembly processes. For example, a Chinese patent application number CN201811479254.0 discloses that: two upper control sticks are respectively connected to lugs at both ends of the rotor support, and are connected to the lower connecting rod through lugs mounted on the fuselage frame. The lower connecting rod is connected to adapters mounted on the upper and lower crossbars. The lower crossbar is mounted on the fuselage frame and can rotate around the mounting axis. The upper crossbar is connected to the lower connecting rod through lugs and adapters. It can be seen that: the existing multi-rotor aircraft arm joints are mostly installed to the arm through lugs, which leads to the addition of structural components, correspondingly increasing the weight, and also leading to a cumbersome assembly process.
[0005] Therefore, we propose a boom joint installation structure to solve the above problems. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this utility model provides a machine arm connector installation structure. By fixing the lugs, fixing the mounting block, and the connector together to form an integrated structure, it solves the problems of heavy weight and cumbersome assembly process.
[0008] (II) Technical Solution
[0009] To achieve the above-mentioned goals of reducing assembly processes and lowering quality, this utility model provides the following technical solution:
[0010] A boom connector mounting structure includes a boom connector. Two fixing blocks, a first fixing block and a second fixing block, are respectively provided on both sides of the outer ring of the boom connector. The first fixing block and the second fixing block are connected to the boom connector and the boom, respectively. At least one reinforcing rib is also provided between the first fixing block and the second fixing block. The at least one reinforcing rib is used to improve the stability between the first fixing block, the second fixing block, and the boom connector. The at least one reinforcing rib is arranged along the axial direction of the boom connector and is connected to the boom connector, the first fixing block, and the second fixing block.
[0011] As a further optimization of this utility model: the top and bottom of the first fixed mounting block are provided with a first front ear and a first rear ear, and the top and bottom of the second fixed mounting block are provided with a second front ear and a second rear ear. The first front ear, the first rear ear, the second front ear, and the second rear ear are all provided with fixing holes, through which the machine arm connected to the machine arm connector can be fixed.
[0012] As a further optimization of this utility model: the fixed mounting block one and the fixed mounting block two are respectively provided with shims on the side facing the machine arm. The shims are used to fill the gap between the machine arm and the machine arm connector. By providing shims at the connection between the machine arm and the machine arm connector, installation and processing errors between the machine arm and the machine arm connector can be effectively avoided.
[0013] As a further optimization of this utility model: the outer diameter of the arm is smaller than the inner diameter of the arm connector, and the gap between the arm and the arm connector is filled with structural adhesive. By filling with structural adhesive, the amount of assembly between the two is reduced.
[0014] As a further optimization of this utility model: the surfaces of the first front ear piece, the first rear ear piece, the second front ear piece, the second rear ear piece, as well as the first fixing block, the second fixing block and the reinforcing rib are all coated with anti-rust paint. By setting the anti-rust paint, the service life of the arm connecting device can be effectively extended.
[0015] As a further optimization of this utility model, the first and second fixed mounting blocks are also provided with structural grooves, which reduces the mass of the first and second fixed mounting blocks while ensuring their strength.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides a boom joint installation structure, which has the following features:
[0018] Beneficial effects:
[0019] A new type of boom connector installation structure solves the problems of heavy weight and complicated assembly process by fixing the lugs, mounting blocks and connectors together to form an integrated structure. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the arm connector structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the arm mounting structure of this utility model.
[0022] In the figure: 1. Arm connector; 2. Fixed mounting block one; 21. First front lug; 22. First front lug; 3. Fixed mounting block two; 31. Second front lug; 32. Second rear lug; 4. First reinforcing rib; 5. Second reinforcing rib; 6. Arm. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-2 A boom connector mounting structure includes a boom connector 1. A first mounting block 2 and a second mounting block 3 are respectively provided on both sides of the outer ring of the boom connector 1. The first mounting block 2 and the second mounting block 3 are respectively connected to the boom connector 1 and the boom 6. A reinforcing rib is also provided between the first mounting block 2 and the second mounting block 3, and between the first mounting block 1 and the second mounting block 2. The number of reinforcing ribs is not limited, but in this embodiment, two reinforcing ribs are preferred: a first reinforcing rib 4 and a second reinforcing rib 5. The first reinforcing rib 4 and the second reinforcing rib 5 are used to improve the stability between the first mounting block 2, the second mounting block 3, and the boom connector 1. The first reinforcing rib 4 and the second reinforcing rib 5 are respectively arranged along the axial direction of the boom connector 1 and are connected to the boom connector 1, the first mounting block 2, and the second mounting block 3.
[0025] The top and bottom of the fixed mounting block 1 2 are provided with a first front ear piece 21 and a first rear ear piece 22, and the top and bottom of the fixed mounting block 2 3 are provided with a second front ear piece 31 and a second rear ear piece 32. The first front ear piece 21, the first rear ear piece 22, the second front ear piece 31 and the second rear ear piece 32 are all provided with fixing holes, through which the machine arm 6 connected to the machine arm connector 1 can be fixed.
[0026] Gaskets are provided on the side of fixed mounting block 1 2 and fixed mounting block 2 3 facing the machine arm 6, respectively. The gaskets are used to fill the gap between the machine arm 6 and the machine arm connector 1. By providing gaskets at the connection between the machine arm 6 and the machine arm connector 1, installation and processing errors between the machine arm 6 and the machine arm connector 1 can be effectively avoided. Fixed mounting block 1 2 and fixed mounting block 2 3 are also provided with structural grooves, which reduces the weight of fixed mounting block 1 2 and fixed mounting block 2 3 while ensuring the strength of fixed mounting block 1 2 and fixed mounting block 2 3.
[0027] The outer diameter of the boom 6 is smaller than the inner diameter of the boom connector 1. During operation, the boom connector 6 is fitted onto the boom 1 along its spanwise direction. After pushing the boom connector 1 into the appropriate position, assembly fixtures are needed for auxiliary positioning to ensure that the boom connector 1 is installed in the correct position. After fitting, the boom connector 1 and the boom 6 can be fixed by riveting through fixing holes. Because the boom connector 1 is a single piece, a gap must be left between the inner surface of the boom connector 1 and the boom 6 for fitting and installation. The gap between the inner surface of the boom connector 1 and the boom 6 can be filled with structural adhesive. The boom connector 1 and the boom are only fitted and then riveted together, which has the advantage of reducing the amount of assembly. Furthermore, because the boom connector 1 and the boom 6 are fitted and then riveted together, the boom connector 1 will provide a certain degree of reinforcement to the boom 6, effectively improving the rigidity of the boom 6.
[0028] In this embodiment, the surfaces of the first front ear piece 21, the first rear ear piece 22, the second front ear piece 31, the second rear ear piece 32, as well as the first mounting block 2, the second mounting block 3, the first reinforcing rib 4, and the second reinforcing rib 5 are all coated with anti-rust paint. By setting the anti-rust paint, the service life of the arm connecting device can be effectively extended.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A boom connector mounting structure, comprising a boom connector (1), characterized in that: The outer ring of the boom connector (1) is provided with a first fixing block (2) and a second fixing block (3) respectively. At least one reinforcing rib (4) is provided between the first fixing block (2) and the second fixing block (3). At least one reinforcing rib is provided along the axial direction of the boom connector (1) and is connected to the boom connector (1), the first fixing block (2) and the second fixing block (3).
2. The boom joint installation structure according to claim 1, characterized in that: The top and bottom of the first fixed mounting block (2) are provided with a first front ear piece (21) and a first rear ear piece (22), and the top and bottom of the second fixed mounting block (3) are provided with a second front ear piece (31) and a second rear ear piece (32). The first front ear piece (21), the first rear ear piece (22), the second front ear piece (31) and the second rear ear piece (32) are all provided with fixing holes, through which the arm (6) connected to the arm connector (1) can be fixed.
3. The boom joint installation structure according to claim 2, characterized in that: The surfaces of the first front ear piece (21), the first rear ear piece (22), the second front ear piece (31), the second rear ear piece (32), the first fixing block (2), the second fixing block (3), and the reinforcing rib are all coated with anti-rust paint.
4. The boom joint installation structure according to claim 1, characterized in that: The fixed mounting block one (2) and fixed mounting block two (3) are respectively provided with shims on the side facing the machine arm (6), and the shims are used to fill the gap between the machine arm (6) and the machine arm connector (1).
5. The boom joint installation structure according to claim 1, characterized in that: The outer diameter of the arm (6) is smaller than the inner diameter of the arm connector (1), and the gap between the arm (6) and the arm connector (1) is filled with structural adhesive.
6. The boom joint installation structure according to claim 1, characterized in that: The fixed mounting block one (2) and fixed mounting block two (3) are also provided with structural grooves, which reduce the mass of fixed mounting block one (2) and fixed mounting block two (3) while ensuring the strength of fixed mounting block one (2) and fixed mounting block two (3).