Aircraft engine fuel pipe puller
By designing a pull-out tool for aircraft engine fuel pipes, the problems of low disassembly efficiency and insufficient safety in the prior art are solved, and efficient and safe fuel pipe pulling operation are achieved.
Patent Information
- Application Number
- CN202420256404.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-02-02
AI Technical Summary
The prior art is difficult to efficiently and safely remove the seal of the aircraft engine fuel pipe, resulting in low maintenance efficiency and risk of damage, affecting flight safety.
An aircraft engine fuel pipe puller is designed, including a clamp and a pull rod. The fixture consists of two halves of annular clamps, a half-annular pull plate, an ear plate and a pull rod. It can apply tension evenly from both sides to adapt to one-hand or two-hand operation.
The uniform pulling of the fuel pipe is achieved, ensuring efficient and safe operation, avoiding damage to the pipe fittings, and reducing the risk of engine air parking.
Smart Images
Figure CN222661580U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aircraft maintenance devices, in particular to an aircraft engine fuel pipe pulling tool. Background Art
[0002] Replacing the seal of the scrapped engine pylon fuel pipe is a necessary task during the regular maintenance of the aircraft. However, this seemingly simple task often encounters difficulties in actual operation. Since the fuel pipe is in contact with oil and gas for a long time, the seal will expand due to chemical reaction, making it difficult to remove the pipe sleeve by hand. Because there are no special tools to deal with this problem, maintenance personnel usually use wooden wedges, hammers or other existing methods to try to remove the pipe sleeve.
[0003] These methods are not only inefficient, but also can easily cause irreversible damage to the pipe sleeve and seal ring if not handled properly. What's more serious is that the fuel pipe supplies fuel to the engine, and any slight damage may increase the risk of the engine stalling in the air, posing a serious threat to flight safety. Therefore, the existing removal method is obviously unable to meet the needs of efficient and safe maintenance. Summary of the invention
[0004] The utility model aims to provide an aircraft engine fuel pipe extraction tool to solve the above-mentioned deficiencies in the prior art, so as to facilitate the extraction of the aircraft engine fuel pipe.
[0005] The utility model provides an aircraft engine fuel pipe extraction tool, which is characterized in that it includes a clamp and a pull rod, wherein the clamp includes two semi-annular clamping blocks, a semi-annular drawing plate is installed at the lower end of the semi-annular clamping block, and ear plates are installed at both ends of the semi-annular clamping block respectively, and the two ear plates are provided with fixing through holes and semicircular drawing through holes, and the fixing bolts pass through the fixing through holes on the ear plates of the two semi-annular clamping blocks and cooperate with the fixing nuts to fix and combine the two semi-annular clamping blocks into a complete circular clamp, and the two semi-annular drawing plates are combined into a completed circular drawing plate, so that the semicircular drawing through holes on the two semi-annular clamping blocks are combined into a complete circular drawing through hole; pull rods are installed at the circular drawing through holes at both ends of the clamp respectively, the lower end of the pull rod passes through the circular drawing through hole to be connected with the pull ring, and the upper end of the pull rod is vertically connected to the handle rod.
[0006] Furthermore, the semi-annular clamping block is detachably connected to the semi-annular drawing plate, a semi-annular groove with openings at both ends is provided on the inner wall of the semi-annular clamping block, and the outer wall of the semi-annular drawing plate is placed in the semi-annular groove.
[0007] Furthermore, the inner ends of the two handle bars are respectively inserted into the sleeves and connected through the sleeves.
[0008] Furthermore, the lower end of the pull rod is provided with an external thread, and the center position of the pull ring is provided with a threaded through hole, and the threaded through hole of the pull rod and the pull ring are threadably matched.
[0009] Compared with the prior art, the utility model has the following outstanding beneficial effects:
[0010] 1. During the aircraft maintenance process, the utility model is used to pull the fuel pipe. Since the two ends of the clamp are respectively equipped with pull rods, the clamp can apply uniform pulling force to the fuel pipe from both sides at the same time. This ensures that both sides of the fuel pipe are evenly stressed, avoiding damage to the pipe due to excessive force on one side;
[0011] 2. The utility model has two states, namely, the one-handed plate pulling state and the two-handed pulling state. This allows maintenance personnel to choose the most appropriate working mode according to actual conditions, ensuring the efficiency and safety of the operation.
[0012] In the state of one-handed pulling plate, when the fuel pipe can be pulled out with less force, the maintenance personnel can insert the inner ends of the two handles into the sleeves respectively. By pulling the handles with one hand, the force on both sides of the fuel pipe is evenly applied, and the pulling operation can be completed easily. This state is particularly suitable for the situation where the pipe fittings are easy to disassemble, which is convenient and quick.
[0013] When the fuel pipe cannot be pulled out with one hand, another state of the utility model needs to be used: the two-handed pulling state. At this time, the maintenance personnel can take out the two handles from the sleeve and rotate the handles to move them to a position that is convenient for handholding. Then, hold a handle with both hands respectively and apply force upward to pull out the fuel pipe. This state is suitable for fuel pipes that are difficult to pull out, and the pulling operation can be completed more effectively by the strength of both hands. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] Figure 2 It is the front view of the utility model.
[0016] Figure 3 It is a top view of the utility model. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0018] like Figures 1 to 3 As shown, the utility model includes a clamp and a pull rod 3.
[0019] The clamp comprises two semi-annular clamping blocks 1, a semi-annular drawing plate 2 is fixedly installed at the lower end of the semi-annular clamping block 1, ear plates 6 are respectively installed at both ends of the semi-annular clamping block 1, and the two ear plates 6 are provided with fixing through holes and semicircular drawing through holes. The fixing bolts 9 pass through the fixing through holes on the ear plates 6 of the two semi-annular clamping blocks 1 and cooperate with the fixing nuts 8 to fix and combine the two semi-annular clamping blocks 1 into a complete circular clamp, the two semi-annular drawing plates 2 are combined into a completed circular drawing plate, and the semicircular drawing through holes on the two semi-annular clamping blocks 1 are combined into a complete circular drawing through hole.
[0020] In the optimized solution, the semi-annular clamping block 1 is detachably connected to the semi-annular drawing plate 2. A semi-annular groove with openings at both ends is provided on the inner wall of the semi-annular clamping block 1. The outer end of the semi-annular drawing plate 2 is placed in the semi-annular groove. When the two semi-annular drawing plates 2 are damaged, they can be easily replaced.
[0021] Pull rods 3 are respectively installed at the circular pulling holes at both ends of the clamp, the lower end of the pull rod 3 passes through the circular pulling hole and is fixedly connected to the pull ring 7, the upper end of the pull rod 3 is vertically fixedly connected to the handle rod 5, and the inner ends of the two handle rods 5 are respectively inserted into the sleeve 4 and connected through the sleeve 4.
[0022] In the optimized solution, the lower end of the pull rod 3 is provided with an external thread, and the center position of the pull ring 7 is provided with a threaded through hole, and the pull rod 3 and the threaded through hole of the pull ring 7 are threadedly matched.
[0023] The operation process is as follows: place the inner end of the semi-circular drawing plate 2 at the lower end of the two semi-circular clamps 1 into the circular groove on the outer wall of the fuel pipe sleeve, and the fixing bolt 9 passes through the fixing through hole on the ear plate 6 of the two semi-circular clamps 1 to cooperate with the fixing nut 8, and the two semi-circular clamps 1 are fixedly assembled into a complete circular clamp, so that the lower end of the pull rod 3 passes through the circular drawing through hole and is fixedly connected to the pull ring 7, and the inner ends of the two handle rods 5 are respectively inserted into the sleeve 4, and the sleeve 4 is pulled upward with one hand to pull out the fuel pipe. When the fuel pipe cannot be pulled out with one hand, remove the sleeve 4, hold a handle rod 5 with both hands, and pull the fuel pipe upward at the same time.
[0024] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes to the present invention without departing from the spirit and scope of the present invention are within the protection scope of the present invention.
Claims
1. An aircraft engine fuel pipe extraction tool, characterized in that: The invention comprises a clamp and a pull rod (3), wherein the clamp comprises two semi-annular clamping blocks (1), a semi-annular drawing plate (2) being installed at the lower end of the semi-annular clamping block (1), ear plates (6) being installed at both ends of the semi-annular clamping block (1), and the two ear plates (6) being provided with fixing through holes and semi-circular drawing through holes. The fixing bolts (9) pass through the fixing through holes on the ear plates (6) of the two semi-annular clamping blocks (1) and cooperate with the fixing nuts (8) to fix and combine the two semi-annular clamping blocks (1) into a complete circular clamp, the two semi-annular drawing plates (2) are combined into a completed circular drawing plate, and the semi-circular drawing through holes on the two semi-annular clamping blocks (1) are combined into a complete circular drawing through hole. Pull rods (3) are installed at the circular drawing through holes at both ends of the clamp, respectively, the lower end of the pull rod (3) passes through the circular drawing through hole and is connected to the pull ring (7), and the upper end of the pull rod (3) is vertically connected to the handle rod (5).
2. The aircraft engine fuel pipe extraction tool according to claim 1, characterized in that: The semi-annular clamping block (1) is detachably connected to the semi-annular drawing plate (2); a semi-annular groove with openings at both ends is provided on the inner wall of the semi-annular clamping block (1); and the outer wall of the semi-annular drawing plate (2) is placed in the semi-annular groove.
3. The aircraft engine fuel pipe extraction tool according to claim 1, characterized in that: The inner ends of the two handle bars (5) are respectively inserted into the sleeves (4) and connected via the sleeves (4).
4. The aircraft engine fuel pipe extraction tool according to claim 1, characterized in that: The lower end of the pull rod (3) is provided with an external thread, and the center of the pull ring (7) is provided with a threaded through hole, and the threaded through hole of the pull rod (3) and the pull ring (7) are threadably matched.