A tandem rotor helicopter with quick detachable rotors

Abstract

The utility model discloses a longitudinal formula double rotor helicopter of quick detachable rotor, relate to helicopter technical field, including helicopter main part, the helicopter main part one end fixedly connected with helicopter tail, the first mounting block is installed to the helicopter main part and helicopter tail top all, the utility model discloses, through the telescopic movement of cylinder or oil jar control piston rod to drive movable block synchronous movement to the recess drive locking block rotation to make extruding head gradually clamping plug -in block, realize the stable fixing of second mounting block, when disassembling, piston rod reverse motion, locking block reverse rotation under the recess effect, and extruding head releases plug -in block to the quick unlocking and complete disassembly, and the design ensures the stable and reliable installation process, and improves the convenience of disassembly greatly, and the automatic locking and unlocking mechanism reduces manual operation time, improves equipment overhaul efficiency, and strengthens the overall maintenance performance.

Description

Technical Field

[0001] This utility model relates to the field of helicopter technology, and in particular to a tandem twin-rotor helicopter with quickly detachable rotors. Background Technology

[0002] In addition to having two identical rotors that rotate in opposite directions, as is the case with other twin-rotor helicopters, the distinctive feature of the cross-rotor helicopter is that the two rotor axes are not parallel, but tilted outwards respectively, and the lateral wheelbase is very small, so the two rotors are crossed above the fuselage.

[0003] However, in the existing technology, when overhauling the front and rear rotor transmission devices of a tandem rotor helicopter, maintenance personnel need to operate in a narrow space. Limited by tools and operating space, this not only increases the difficulty of disassembly and maintenance but also easily leads to fatigue and reduces work efficiency. In addition, the disassembly process is complex, time-consuming, and labor-intensive, often requiring multiple professional maintenance personnel to work together, and demanding that they have a high level of skill and rich experience, which undoubtedly increases labor costs. Utility Model Content

[0004] The purpose of this invention is to address the problems in the existing technology where limitations in tools and operational space not only increase the difficulty of disassembly and maintenance but also easily lead to fatigue and reduced work efficiency. The invention proposes a tandem twin-rotor helicopter with quickly detachable rotors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tandem twin-rotor helicopter with quickly detachable rotors, comprising a helicopter body, a helicopter tail fixedly connected to one end of the helicopter body, a first mounting block installed on the top of both the helicopter body and the helicopter tail, a second mounting block fixedly connected to the bottom of the first mounting block, and an installation mechanism installed below the second mounting block. The installation mechanism includes a mounting frame, a limiting frame fixedly connected to the top of the mounting frame, a limiting sleeve fixedly connected to the top of the limiting frame, a fixing frame fixedly connected to the center of the top of the mounting frame, the fixing frame being located inside the limiting frame, and a piston rod slidably connected to the middle of the fixing frame, a center rod fixedly connected to both ends of the fixing frame, and a locking block provided on the inner side of both ends of the fixing frame, the locking block being rotatably connected to the center rod.

[0006] Preferably, the bottom end of the piston rod passes through the mounting bracket, and the piston rod is slidably connected to the mounting bracket.

[0007] Preferably, a movable block is rotatably connected to the top end of the piston rod.

[0008] Preferably, a pressing head is fixedly connected to the top of the locking block, and a groove is formed on the inner side of the bottom end of the locking block.

[0009] Preferably, the movable block is located inside the groove.

[0010] Preferably, the bottom of the second mounting block is fixedly connected to a plug-in block, which passes through the limiting sleeve and is located between the two extrusion heads.

[0011] Preferably, four connecting rods are fixedly connected to the outer surface of the first mounting block, and one end of each connecting rod is fixedly connected to the rotor body.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the piston rod is controlled by a cylinder or hydraulic cylinder to extend and retract, thereby driving the movable block to move synchronously. The locking block is driven to rotate through the groove, so that the extrusion head gradually clamps the plug-in block, achieving stable fixation of the second mounting block. During disassembly, the piston rod moves in the opposite direction, the locking block rotates in the opposite direction under the action of the groove, and the extrusion head releases the plug-in block, thereby quickly unlocking and completing the disassembly. This design ensures that the installation process is stable and reliable, while greatly improving the convenience of disassembly. Its automatic locking and unlocking mechanism reduces manual operation time, improves equipment maintenance efficiency, and enhances overall maintenance performance.

[0013] 2. In this utility model, the second mounting block guides the plug-in block through the limiting sleeve to achieve pre-positioning and avoid installation deviation. After the plug-in block enters the pre-positioned position, the piston rod drives the movable block to move upward, causing the pressing head of the locking block to open and leaving a locking space. When the plug-in block is fully in place, the movable block moves downward, and the pressing head applies pressure inward to ensure that the plug-in block is firmly fixed. This mechanism effectively prevents loosening, improves assembly accuracy, and supports quick disassembly and maintenance, enhancing the reliability of the overall structure and work efficiency. Attached Figure Description

[0014] Figure 1 This utility model presents an overall structural diagram of a tandem twin-rotor helicopter with quickly detachable rotors. Figure 2 This utility model provides a three-dimensional structural diagram of the rotor body of a tandem twin-rotor helicopter with a quickly detachable rotor. Figure 3 This utility model presents a three-dimensional structural diagram of the mounting mechanism for a tandem twin-rotor helicopter with quickly detachable rotors. Figure 4 This utility model presents a three-dimensional structural diagram of the disassembled installation mechanism of a tandem twin-rotor helicopter with quickly detachable rotors.

[0015] Legend: 1. Helicopter body; 2. Rotor body; 3. First mounting block; 31. Connecting rod; 4. Helicopter tail; 5. Second mounting block; 51. Insertion block; 6. Mounting mechanism; 61. Mounting frame; 62. Limiting frame; 63. Limiting sleeve; 64. Fixing frame; 641. Piston rod; 65. Movable block; 66. Locking block; 67. Center rod; 68. Extrusion head; 69. Groove. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a tandem twin-rotor helicopter with quick-detachable rotors, including a helicopter body 1, a helicopter tail 4 fixedly connected to one end of the helicopter body 1, a first mounting block 3 installed on the top of both the helicopter body 1 and the helicopter tail 4, a second mounting block 5 fixedly connected to the bottom of the first mounting block 3, and a mounting mechanism 6 installed below the second mounting block 5. The mounting mechanism 6 includes a mounting frame 61. A limiting frame 62 is fixedly connected to the top of the mounting frame 61. A limiting sleeve 63 is fixedly connected to the top of the limiting frame 62. A fixing frame 64 is fixedly connected to the center of the top of the mounting frame 61. The fixing frame 64 is located inside the limiting frame 62, and a piston rod 641 is slidably connected to the middle of the fixing frame 64. A center rod 67 is fixedly connected to both ends of the fixing frame 64, and a locking block 66 is provided on the inner side of both ends of the fixing frame 64. The locking block 66 is rotatably connected to the center rod 67. The bottom end of the piston rod 641 passes through the mounting frame 61, and the piston rod 641 is slidably connected to the mounting frame 61.

[0019] The specific settings and functions of this embodiment are described below. During installation and disassembly, a cylinder or hydraulic cylinder is used to control the extension and retraction of the piston rod 641. As the piston rod 641 extends or retracts, it drives the movable block 65 to move synchronously. During this movement, the movable block 65 engages with the groove 69, thereby driving the locking block 66 to rotate along the central rod 67. As the locking block 66 rotates, its top pressing head 68 gradually retracts inward and approaches the insertion block 51, achieving reliable contact with the insertion block 51. When the insertion block 51 is clamped by the locking block 66, the second mounting block 5 can be effectively fixed in the designated position, ensuring the stability and safety of the installation. When disassembly is required, the piston rod 641 moves in the reverse direction, driving the movable block 65 back to its original position. The locking block 66 rotates in the reverse direction under the action of the groove 69, causing the pressing head 68 to gradually move away from the insertion block 51, thereby releasing the lock on the second mounting block 5 and achieving quick disassembly. This structural design not only ensures the convenience of installation and disassembly but also improves work efficiency during maintenance, reduces manual operation time, and enhances the overall maintenance performance of the equipment.

[0020] Example 2: Figure 3 and Figure 4 As shown, a movable block 65 is rotatably connected to the top of the piston rod 641. A pressing head 68 is fixedly connected to the top of the locking block 66, and a groove 69 is formed on the inner side of the bottom end of the locking block 66. The movable block 65 is located inside the groove 69. A plug-in block 51 is fixedly connected to the bottom of the second mounting block 5. The plug-in block 51 passes through the limiting sleeve 63 and is located between the two pressing heads 68. Four connecting rods 31 are fixedly connected to the outer surface of the first mounting block 3, and one end of the connecting rod 31 is fixedly connected to the rotor body 2.

[0021] The overall effect of this embodiment is that when installing the first mounting block 3 and the rotor body 2, the second mounting block 5 at the bottom of the first mounting block 3 is first used for preliminary docking. Specifically, the second mounting block 5 can guide the plug-in block 51 through the limiting sleeve 63, and the limiting sleeve 63 plays a pre-positioning role in this process, ensuring that the plug-in block 51 enters the correct position and avoiding offset or error during installation. After the initial insertion is completed, the movement of the piston rod 641 allows it to slide relative to the fixed frame 64, thus providing flexibility for subsequent locking operations. When the control system is activated, the movable block 65 is driven to move upward. During the upward movement of the movable block 65, it cooperates with the two locking blocks 66, causing the pressing head 68 at the top of the locking block 66 to open, reserving locking space for the insertion block 51. Once the insertion block 51 is fully in its predetermined position, the movable block 65 can be controlled to move downwards. At this time, the two pressing heads 68 gradually move inwards, applying a pressing force to the insertion block 51 to ensure it is firmly fixed within the limiting sleeve 63. This entire process ensures the stable positioning of the insertion block 51, improves installation accuracy, and prevents structural deviations caused by loosening. Furthermore, the controllability of this locking mechanism makes subsequent disassembly and maintenance more convenient, improving the overall assembly efficiency and reliability.

[0022] The device's operation and working principle are as follows: During installation and disassembly, the piston rod 641 is controlled by a pneumatic or hydraulic cylinder, causing the movable block 65 to move synchronously. As the movable block 65 moves, the groove 69 works in conjunction, causing the locking block 66 to rotate around the central rod 67. This allows the pressing heads 68 at the top of the two locking blocks 66 to gradually approach the insertion block 51, achieving a pressing and locking effect on the insertion block 51, thus securing the second mounting block 5. This design simplifies installation and disassembly operations and improves maintenance efficiency. When installing the first mounting block 3 and the rotor body 2, the insertion block 51 at the bottom of the second mounting block 5 can be passed through the limiting sleeve 63 for initial positioning. Subsequently, the piston rod 641 slides relative to the fixed frame 64, driving the movable block 65 to move. When the movable block 65 moves upward, it causes the pressing heads 68 of the two locking blocks 66 to open; conversely, it causes the pressing heads 68 to gradually approach the insertion block 51, so as to accurately position the insertion block 51 and thus improve the installation stability.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A tandem rotor helicopter with quickly detachable rotors, comprising a helicopter body (1), wherein a helicopter tail section (4) is fixedly connected to one end of the helicopter body (1), characterized in that: The helicopter body (1) and the top of the helicopter tail (4) are both equipped with a first mounting block (3), and a second mounting block (5) is fixedly connected to the bottom of the first mounting block (3). An installation mechanism (6) is installed below the second mounting block (5). The installation mechanism (6) includes an installation frame (61), a limiting frame (62) is fixedly connected to the top of the installation frame (61), a limiting sleeve (63) is fixedly connected to the top of the limiting frame (62), a fixing frame (64) is fixedly connected to the center of the top of the installation frame (61), the fixing frame (64) is located inside the limiting frame (62), and a piston rod (641) is slidably connected to the middle of the fixing frame (64). A center rod (67) is fixedly connected to both ends of the fixing frame (64), and a locking block (66) is provided on the inner side of both ends of the fixing frame (64). The locking block (66) is rotatably connected to the center rod (67).

2. A tandem twin-rotor helicopter with quickly detachable rotors according to claim 1, characterized in that: The bottom end of the piston rod (641) passes through the mounting bracket (61), and the piston rod (641) is slidably connected to the mounting bracket (61).

3. A tandem twin-rotor helicopter with quickly detachable rotors according to claim 1, characterized in that: The piston rod (641) is rotatably connected to a movable block (65) at its top end.

4. A tandem twin-rotor helicopter with quickly detachable rotors according to claim 1, characterized in that: The top of the locking block (66) is fixedly connected to the extrusion head (68), and a groove (69) is provided on the inner side of the bottom end of the locking block (66).

5. A tandem twin-rotor helicopter with quickly detachable rotors according to claim 3, characterized in that: The movable block (65) is located inside the groove (69).

6. A tandem twin-rotor helicopter with quickly detachable rotors according to claim 1, characterized in that: The bottom of the second mounting block (5) is fixedly connected to a plug block (51), which passes through the limiting sleeve (63) and is located between the two extrusion heads (68).

7. A tandem twin-rotor helicopter with quickly detachable rotors according to claim 1, characterized in that: Four connecting rods (31) are fixedly connected to the outer surface of the first mounting block (3), and one end of each connecting rod (31) is fixedly connected to the rotor body (2).

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