737 ng aircraft radome hoist tool

Abstract

This utility model relates to the field of aviation maintenance auxiliary equipment technology, and discloses a 737NG aircraft radome lifting tool, including a radome housing. A lifting mechanism is fixedly connected to the bottom of the outer wall of the radome housing for lifting the radome. A fixing mechanism is fixedly connected to the top of the outer wall of the lifting mechanism for convenient lifting. Engaging mechanisms are fixedly connected to the front and rear sides of the inner wall of the radome housing. A hinge is fixedly connected to the bottom left side of the radome housing. Threaded holes are provided on the front and rear sides of the outer wall of the radome housing. The lifting mechanism includes lifting holes located around the bottom of the radome housing. In this utility model, the lifting mechanism is installed at the bottom of the radome housing, and its lifting holes are connected by screws, which are reinforced by washers and nuts. The fixing mechanism at the top of the lifting mechanism assists in lifting, achieving stable lifting, avoiding component damage caused by manual handling, and improving the maintenance qualification rate.

Description

Technical Field

[0001] This utility model relates to the field of aviation maintenance auxiliary equipment technology, and in particular to a 737NG aircraft radome hoisting tool. Background Technology

[0002] The radome of the 737NG aircraft is installed at the front of the aircraft nose to protect the weather radar antenna and electronic equipment, while ensuring the normal operation of the radar system. In the maintenance work of Boeing 737NG series aircraft, the radome needs to be removed and installed when performing work items such as radome hinge joint inspection and radome off-position repair.

[0003] The 737NG aircraft radome lifting tool is a specialized piece of equipment designed for the safe and precise lifting operations during the installation, disassembly, and handling of radomes for the 737NG series aircraft. It is a key auxiliary tool ensuring efficient radome maintenance and preventing damage to the radome itself and surrounding components during operation. However, existing 737NG aircraft radome lifting tools are not available due to the radome's significant weight, limited operating space, and high installation height. Currently, no dedicated lifting tool is provided, necessitating manual handling by maintenance personnel on high-altitude ladders, posing significant risks. Manual handling easily leads to impact damage to radome structural components; personnel must operate under heavy loads in confined spaces, posing risks of falls and muscle strain; manual positioning accuracy is low, and the disassembly and assembly process is time-consuming. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a 737NG aircraft radome hoisting tool, which aims to improve the problems of the high risk, low accuracy of manual positioning, and long disassembly and assembly time in the prior art, which require maintenance personnel to carry out manual handling operations on high-altitude ladders.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a 737NG aircraft radome hoisting tool, comprising a radome housing, a hoisting mechanism fixedly connected to the bottom of the outer wall of the radome housing for hoisting the radome, a fixing mechanism fixedly connected to the top of the outer wall of the hoisting mechanism for convenient hoisting, a locking mechanism fixedly connected to the front and rear sides of the inner wall of the radome housing, a hinge fixedly connected to the bottom left side of the radome housing, and threaded holes provided on the front and rear sides of the outer wall of the radome housing; the hoisting mechanism includes a hoisting hole, which is opened around the bottom of the radome housing, a screw threadedly connected to the center of the inner wall of the hoisting hole, a conical block fixedly connected to the left side of the outer wall of the screw, a mounting base fixedly connected to one side of the outer wall of the conical block, a connecting block rotatably connected to the left side of the outer wall of the mounting base, and a connecting component fixedly connected to the center of the inner wall of the connecting block.

[0006] As a further description of the above technical solution: The connecting assembly includes a lifting ring, which is fixedly connected to the middle of the inner wall of the connecting block. A washer passes through one side of the outer wall of the screw, and a nut is threadedly connected to the other side of the screw. A lifting strap is fixedly connected to one end of the lifting ring.

[0007] As a further description of the above technical solution: The fixing mechanism includes a hook, which is fixedly connected to the top of the outer wall of the sling. A threaded rod is fixedly connected to the top of the outer wall of the hook, and a nut is threadedly connected to the top of the outer wall of the threaded rod. Fixing plates are fixedly connected to the left and right sides of the outer wall of the nut, and fixing rings are fixedly connected to the top of the outer wall of the fixing plates. Support components are fixedly connected to all four sides of the outer wall of the hook.

[0008] As a further description of the above technical solution: The support assembly includes a spring, which is fixedly connected to the middle of the inner wall of the hook. A baffle is rotatably connected to the top of the outer wall of the spring. A connecting column is fixedly connected to the adjacent side of the inner wall of the fixed plate. Fixed discs are threadedly connected to the left and right sides of the outer wall of the connecting column.

[0009] As a further description of the above technical solution: The locking mechanism includes a folding frame, which is rotatably connected to the front and rear sides of the inner wall of the radar housing. A fixing rod is rotatably connected to the bottom of the outer wall of the folding frame, and positioning components are fixedly connected to the left and right sides of the outer wall of the fixing rod.

[0010] As a further description of the above technical solution: The positioning component includes a fixing hole, which is located in the middle of the inner wall of the folding frame. A movable plate is slidably connected to the left and right sides of the outer wall of the folding frame, and a pin is threadedly connected to one side of the outer wall of the movable plate.

[0011] As a further description of the above technical solution: A hook is fixedly connected to one end of the outer wall of the sling, and a spring is fixedly connected to the middle of the outer wall of the hook.

[0012] As a further description of the above technical solution: The outer wall of the fixing plate is fixedly connected to the left and right sides of the fixing pad, and the inner wall of the fixing pad is threaded with a connecting hole.

[0013] This utility model has the following beneficial effects: 1. In this utility model, a hoisting mechanism is installed at the bottom of the radar housing. The hoisting holes are connected by screws, and the screws are reinforced by washers and nuts. The top fixing mechanism of the hoisting mechanism assists in the hoisting, and together they achieve stable hoisting, eliminate the high-altitude heavy-load operation, reduce the risk of work-related injuries, improve work efficiency, shorten the single disassembly and assembly cycle, reduce the number of operators, reduce labor intensity, avoid damage to components caused by manual handling, and improve the maintenance qualification rate.

[0014] 2. In this utility model, the hook at the top of the sling is fixed to the plate by the threaded connection of the threaded rod and the nut, and the top fixing ring is connected to the upper part; in the support assembly around the hook, the spring provides elastic support, the top baffle assists in limiting the position, and the connecting columns on the adjacent sides of the fixing plate are fixed by the threaded fixing of the left and right side fixing plates, forming a multi-directional support and fastening structure, which together realizes the stable fixing of the radar cover and the balance of the lifting force. Attached Figure Description

[0015] Figure 1 This is a perspective view of a 737NG aircraft radome hoisting tool proposed in this utility model; Figure 2 This is a front view of a 737NG aircraft radome hoisting tool proposed in this utility model; Figure 3 This is a structural exploded view of a 737NG aircraft radome hoisting tool proposed in this utility model; Figure 4 This is a partial structural schematic diagram of a 737NG aircraft radome hoisting tool proposed in this utility model; Figure 5 This is a partial structural diagram of a 737NG aircraft radome hoisting tool proposed in this utility model.

[0016] Legend: 1. Radar housing; 2. Lifting mechanism; 201. Lifting hole; 202. Screw; 203. Conical block; 204. Mounting base; 205. Connecting block; 206. Connecting assembly; 2061. Lifting ring; 2062. Washer; 2063. Nut; 2064. Lifting strap; 3. Fixing mechanism; 301. Hook; 302. Threaded rod; 303. Fixing plate; 304. Nut; 305. Fixing ring; 306. Support assembly; 3061. Spring 1; 3062. Baffle; 3063. Connecting column; 3064. Fixing plate; 4. Engaging mechanism; 401. Folding frame; 402. Fixing rod; 403. Positioning assembly; 4031. Fixing hole; 4032. Moving plate; 4033. Pin; 5. Hinge; 6. Spring 2; 7. Threaded hole; 8. Hook; 9. Connecting hole; 10. Fixing pad. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a 737NG aircraft radome hoisting tool, comprising a radome housing 1, a hoisting mechanism 2 fixedly connected to the bottom of the outer wall of the radome housing 1 for hoisting the radome, a fixing mechanism 3 fixedly connected to the top of the outer wall of the hoisting mechanism 2 for convenient hoisting, a locking mechanism 4 fixedly connected to the front and rear sides of the inner wall of the radome housing 1, a hinge 5 fixedly connected to the bottom left side of the radome housing 1, and threaded holes 7 provided on the front and rear sides of the outer wall of the radome housing 1; the hoisting mechanism 2 includes hoisting holes 201, which are formed around the bottom of the radome housing 1, and the inner... A screw 202 is threadedly connected to the middle of the wall. A conical block 203 is fixedly connected to the left side of the outer wall of the screw 202. A mounting base 204 is fixedly connected to one side of the outer wall of the conical block 203. A connecting block 205 is rotatably connected to the left side of the outer wall of the mounting base 204. A connecting assembly 206 is fixedly connected to the middle of the inner wall of the connecting block 205. The connecting assembly 206 includes a lifting ring 2061, which is fixedly connected to the middle of the inner wall of the connecting block 205. A washer 2062 passes through one side of the outer wall of the screw 202. A nut 2063 is threadedly connected to the other side of the screw 202. A sling 2064 is fixedly connected to one end of the lifting ring 2061. Specifically, the radar housing 1 is the object to be hoisted, and the hoisting mechanism 2 at the bottom of its outer wall is the main hoisting component. During hoisting, the screw 202 is first installed in the hoisting holes 201 around the bottom of the radar housing 1 through the threaded connection with the hoisting hole 201. The tapered block 203 on the left side of the outer wall of the screw 202 can enhance the connection stability and prevent loosening. The screw 202 passes through the washer 2062 in sequence and is then threadedly connected to the nut 2063. The two work together to strengthen the connection and prevent it from falling off. The screw 202 is rotatably connected to the mounting base 204 connected to the tapered block 203 and the connecting block 205, so that the angle of the connecting block 205 can be flexibly adjusted to adapt to different hoisting requirements. The lifting ring 2061 of the connecting component 206 in the middle of the inner wall of the connecting block 205 is fixed on the connecting block 205, and the lifting strap 2064 connected to one end is connected to the top fixing mechanism 3. The fixing mechanism 3 provides convenient A stable upper connection point assists in hoisting. Meanwhile, the locking mechanism 4 on the inner wall of the radar housing 1 enhances structural stability, the bottom hinge 5 facilitates opening and closing, and the threaded holes 7 on the outer wall are used to install other auxiliary components. Through the coordinated operation of all components of the hoisting mechanism 2, the weight of the radar housing 1 is transferred to the fixing mechanism 3 via the slings 2064, achieving stable hoisting. Hydraulic and electric drive lifting devices replace manual lifting. The three-dimensional micro-adjustment mechanism of the lifting device precisely positions the radar housing, ensuring balanced hoisting force, eliminating high-altitude heavy-load operations, and reducing the risk of work-related injuries by more than 90%. Operational efficiency is optimized: the single disassembly and assembly cycle is shortened to within 15 minutes, increasing efficiency by ≥60%; labor costs are saved: the number of operators required is reduced from 3 to 1, reducing labor intensity by 70%; quality assurance is strengthened: component damage caused by manual handling is avoided, and the repair qualification rate is increased to 100%.

[0019] Reference Figure 1 , Figure 2 and Figure 5 The fixing mechanism 3 includes a hook 301, which is fixedly connected to the top of the outer wall of the sling 2064. A threaded rod 302 is fixedly connected to the top of the outer wall of the hook 301. A nut 304 is threadedly connected to the top of the outer wall of the threaded rod 302. Fixing plates 303 are fixedly connected to the left and right sides of the outer wall of the nut 304. A fixing ring 305 is fixedly connected to the top of the outer wall of the fixing plate 303. Support components 306 are fixedly connected to all four sides of the outer wall of the hook 301. The support components 306 include a spring 3061, which is fixedly connected to the middle of the inner wall of the hook 301. A baffle 3062 is rotatably connected to the top of the outer wall of the spring 3061. A connecting column 3063 is fixedly connected to the adjacent side of the inner wall of the fixing plate 303. Fixing discs 3064 are threadedly connected to the left and right sides of the outer wall of the connecting column 3063. Specifically, the top hook 301 of the sling 2064 is connected to the fixing plate 303 by the threaded rod 302 and the nut 304. The fixing ring 305 at the top of the fixing plate 303 serves as the upper connection point. In the support components 306 around the hook 301, the spring 3061 provides elastic support, the top baffle 3062 assists in limiting the position, and the connecting columns 3063 on the adjacent sides of the fixing plate 303 are fixed by the left and right fixing plates 3064 through threads, forming a multi-directional support and fastening structure to achieve stable fixing of the radar housing 1 and balance of the lifting force.

[0020] Reference Figure 1 , Figure 2 and Figure 3 The engaging mechanism 4 includes a folding frame 401, which is rotatably connected to the front and rear sides of the inner wall of the radar housing 1. A fixing rod 402 is rotatably connected to the bottom of the outer wall of the folding frame 401. A positioning component 403 is fixedly connected to the left and right sides of the outer wall of the fixing rod 402. The positioning component 403 includes a fixing hole 4031, which is opened in the middle of the inner wall of the folding frame 401. A moving plate 4032 is slidably connected to the left and right sides of the outer wall of the folding frame 401. A pin 4033 is threadedly connected to one side of the outer wall of the moving plate 4032. A hook 8 is fixedly connected to one end of the outer wall of the sling 2064. A spring 6 is fixedly connected to the middle of the outer wall of the hook 8. A fixing pad 10 is fixedly connected to the left and right sides of the outer wall of the fixing plate 303. A connecting hole 9 is threadedly connected to the middle of the inner wall of the fixing pad 10. Specifically, the folding frame 401 is rotatably connected to the front and rear sides of the inner wall of the radar housing 1 to achieve opening and closing. The fixed rod 402 rotatably connected at its bottom can be adjusted in angle. The positioning components 403 on both sides of the fixed rod 402 are adjusted in position by sliding the moving plate 4032. Then, the pin 4033 is threadedly engaged with the fixing hole 4031 on the inner wall of the folding frame 401 to complete the positioning and fixing. At the same time, the hook 8 with spring 6 at one end of the sling 2064 can be connected to related components. The fixing pads 10 on both sides of the fixing plate 303 are threadedly fixed through the connecting hole 9 on the inner wall, which together realize the locking and auxiliary fixing functions of the radar housing 1.

[0021] Working Principle: The radar housing 1 is the object to be hoisted. The hoisting mechanism 2 at the bottom of its outer wall is the main component for hoisting. During hoisting, the screw 202 is first installed in the hoisting holes 201 around the bottom of the radar housing 1 using the threaded connection between the hoisting holes 201 and the screw 202. The tapered block 203 on the left side of the outer wall of the screw 202 enhances the stability of the connection and prevents loosening. One side of the screw 202 passes through the washer 2062 and is then threadedly connected to the nut 2063. The cooperation of the washer 2062 and the nut 2063 further strengthens the connection between the screw 202 and the radar housing 1, preventing it from falling off during hoisting. The screw 202 is connected to the mounting base 204 via the tapered block 203, and is rotatably connected to the connecting block 205, allowing the connecting block 205 to be flexibly adjusted at an angle to adapt to different hoisting requirements. In the connecting component 206 in the middle of the inner wall of block 205, the lifting ring 2061 is fixed on the connecting block 205, and the lifting strap 2064 connected to one end is connected to the fixing mechanism 3 at the top. The fixing mechanism 3 can provide a convenient and stable upper connection point to assist in the hoisting operation. At the same time, the locking mechanism 4 on the inner wall of the radar cover 1 can enhance the stability of the overall structure. The hinge 5 at the bottom facilitates the opening and closing operation of the radar cover 1. The threaded hole 7 on the outer wall can be used for the installation of other auxiliary components. Through the coordinated action of each component of the hoisting mechanism 2, the weight of the radar cover 1 is transferred to the fixing mechanism 3 through the lifting strap 2064 to achieve stable hoisting of the radar cover. The hydraulic and electric drive lifting device replaces manual lifting. The three-dimensional micro-adjustment mechanism of the lifting device achieves precise positioning of the radar cover to ensure balanced force during the hoisting process. The hook 301 at the top of the sling 2064 connects and fixes the fixing plate 303 through the threaded engagement of the threaded rod 302 and the nut 304. The fixing ring 305 at the top of the fixing plate 303 can serve as the upper connection point. Among the support components 306 around the hook 301, the spring 3061 provides elastic support, and the baffle 3062 at its top can assist in limiting the position. At the same time, the connecting columns 3063 on the adjacent sides of the fixing plate 303 are fixed by the threads of the fixing plates 3064 on the left and right sides, forming a multi-directional support and fastening structure, which together achieves stable fixation of the radar housing 1 and force balance during the hoisting process.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A 737NG aircraft radome hoisting tool, comprising a radome housing (1), characterized in that: The bottom of the outer wall of the radar radome (1) is fixedly connected to a hoisting mechanism (2), which is used to hoist the radar radome. The top of the outer wall of the hoisting mechanism (2) is fixedly connected to a fixing mechanism (3), which is used for convenient hoisting. The front and rear sides of the inner wall of the radar radome (1) are fixedly connected to a locking mechanism (4). The bottom left side of the radar radome (1) is fixedly connected to a hinge (5). The front and rear sides of the outer wall of the radar radome (1) are provided with threaded holes (7). The hoisting mechanism (2) includes a hoisting hole (201), which is located around the bottom of the radar housing (1). A screw (202) is threaded onto the middle of the inner wall of the hoisting hole (201). A conical block (203) is fixedly connected to the left side of the outer wall of the screw (202). A mounting base (204) is fixedly connected to one side of the outer wall of the conical block (203). A connecting block (205) is rotatably connected to the left side of the outer wall of the mounting base (204). A connecting component (206) is fixedly connected to the middle of the inner wall of the connecting block (205).

2. The 737NG aircraft radome hoisting tool according to claim 1, characterized in that: The connecting assembly (206) includes a lifting ring (2061), which is fixedly connected to the middle of the inner wall of the connecting block (205). A washer (2062) passes through one side of the outer wall of the screw (202), and a nut (2063) is threadedly connected to the other side of the screw (202). A sling (2064) is fixedly connected to one end of the lifting ring (2061).

3. The 737NG aircraft radome hoisting tool according to claim 1, characterized in that: The fixing mechanism (3) includes a hook (301), which is fixedly connected to the top of the outer wall of the sling (2064). A threaded rod (302) is fixedly connected to the top of the outer wall of the hook (301). A nut (304) is threadedly connected to the top of the outer wall of the threaded rod (302). Fixing plates (303) are fixedly connected to the left and right sides of the outer wall of the nut (304). A fixing ring (305) is fixedly connected to the top of the outer wall of the fixing plate (303). Support components (306) are fixedly connected to all four sides of the outer wall of the hook (301).

4. The 737NG aircraft radome hoisting tool according to claim 3, characterized in that: The support assembly (306) includes a spring (3061), which is fixedly connected to the middle of the inner wall of the hook (301). A baffle (3062) is rotatably connected to the top of the outer wall of the spring (3061). A connecting column (3063) is fixedly connected to the adjacent side of the inner wall of the fixing plate (303). A fixing plate (3064) is threadedly connected to the left and right sides of the outer wall of the connecting column (3063).

5. The 737NG aircraft radome hoisting tool according to claim 1, characterized in that: The locking mechanism (4) includes a folding frame (401), which is rotatably connected to the front and rear sides of the inner wall of the radar housing (1). A fixing rod (402) is rotatably connected to the bottom of the outer wall of the folding frame (401), and a positioning component (403) is fixedly connected to the left and right sides of the outer wall of the fixing rod (402).

6. A 737NG aircraft radome hoisting tool according to claim 5, characterized in that: The positioning component (403) includes a fixing hole (4031), which is located in the middle of the inner wall of the folding frame (401). The left and right sides of the outer wall of the folding frame (401) are slidably connected to a movable plate (4032), and a pin (4033) is threadedly connected to one side of the outer wall of the movable plate (4032).

7. A 737NG aircraft radome hoisting tool according to claim 2, characterized in that: A hook (8) is fixedly connected to one end of the outer wall of the sling (2064), and a spring (6) is fixedly connected to the middle of the outer wall of the hook (8).

8. A 737NG aircraft radome hoisting tool according to claim 3, characterized in that: The outer wall of the fixing plate (303) is fixedly connected to the left and right sides of the fixing pad (10), and the inner wall of the fixing pad (10) is threadedly connected to the connecting hole (9).

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