Non-prestressed blocking pressure relief cylinder and non-prestressed blocking deceleration system
By designing a pressure relief cylinder without preload, utilizing flow-limiting orifices and one-way exhaust components, and combining them with a reset device, a simple and efficient aircraft landing arresting system is achieved, solving the problems of complexity and high cost of existing systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 梁贤博
- Filing Date
- 2024-02-20
- Publication Date
- 2026-05-26
AI Technical Summary
Existing aircraft landing arresting systems are complex in structure and costly, making them difficult to apply widely.
The pressure relief cylinder employs a non-preloaded barrier, comprising a force-bearing rod, a main air cylinder, a piston, a guide rod, an upper baffle, a lower baffle, a one-way exhaust assembly, and a return air assembly. One-way pressure relief is achieved through the diameter variation of the guide rod and the design of the flow-limiting orifice. Combined with a reset device and a spring structure, it achieves a simple and efficient barrier effect.
It achieves a simple and cost-effective aircraft landing arresting mechanism, which reduces system complexity and cost by using unidirectional pressure relief to achieve arresting.
Smart Images
Figure CN117842366B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of aircraft landing arresting devices, and in particular to a non-pre-forced arresting pressure relief cylinder and a non-pre-forced arresting deceleration system. Background Technology
[0002] Modern aircraft carriers generally use hydraulic arresting systems, which consist of braking mechanisms, hydraulic buffer systems, and cooling systems. The braking mechanisms include: an arresting mechanism that generates braking force, a control valve that maintains the pressure in the brake cylinder, and an accumulator that ensures rapid return to its original position after arresting the aircraft. The hydraulic buffer system is mainly used to reduce the overload at the initial moment of braking and extend the system's lifespan. The cooling system is used to cool the heat energy converted from the enormous kinetic energy of the carrier-based aircraft during the arresting process.
[0003] Once the tailhook of the carrier-based aircraft engages the arresting cable, the cable simultaneously slows the aircraft through pulley dampers while continuously transferring kinetic energy to the compressed air tank. At this point, the entire arresting system, hidden below the deck, operates concurrently, converting the immense kinetic energy of the impact into the heat energy of the hydraulic fluid and the potential energy of the compressed air, thus cushioning the impact and braking the aircraft. Although arresting systems already exist, their complex structures and high costs limit their widespread use. Therefore, there is an urgent need for a simple, cost-effective aircraft landing arresting system. Summary of the Invention
[0004] One of the objectives of this invention is to provide a pressure relief cylinder without preload, which has a simple structure and high cost performance.
[0005] To achieve the above objectives, the present invention provides the following solution:
[0006] A pressure relief cylinder without preload includes a force-bearing rod, a main air cylinder, a piston, a guide rod, an upper baffle, a lower baffle, a one-way exhaust assembly, and a return air assembly. The piston is located at the lower end of the force-bearing rod and is fixedly connected to the rear end of the guide rod. The diameter of the front end of the guide rod is larger than the diameter of the rear end. The upper baffle is located inside the main air cylinder and has an upper limit flow hole. The diameter of the front end of the guide rod is equal to the diameter of the upper limit flow hole. The lower baffle is located at the lower end of the main air cylinder and has the one-way exhaust assembly and the return air assembly. Both the one-way exhaust assembly and the return air assembly are connected to the main air cylinder. The one-way exhaust assembly is used to discharge part of the gas in the main air cylinder, and the return air assembly is used to fill the main air cylinder with gas.
[0007] Preferably, the device further includes a reset device and an outer sleeve. The upper part of the force-bearing rod is fixedly connected to the outer sleeve, and the outer sleeve is sleeved on the upper part of the main air cylinder. One end of the reset device is connected to the outer sleeve, and the other end of the reset device is connected to the lower baffle.
[0008] Preferably, the device further includes a retaining ring, and the end of the outer sleeve is provided with a retaining ring, and the reset device is connected to the retaining ring.
[0009] Preferably, the reset device includes a spring.
[0010] Preferably, the spring is sleeved outside the main air cylinder.
[0011] Preferably, the device further includes a middle partition plate disposed between the upper partition plate and the lower baffle plate. The middle partition plate is provided with a middle flow-limiting hole. The diameter of the middle flow-limiting hole is larger than the front end diameter of the guide rod. The middle flow-limiting hole is located at the center of the middle partition plate, and the upper flow-limiting hole is located at the center of the upper partition plate.
[0012] Preferably, the one-way exhaust assembly is a one-way exhaust valve.
[0013] Preferably, the return air assembly is a return air valve.
[0014] Preferably, the front end of the guide rod is cylindrical.
[0015] The present invention also provides a non-preloaded deceleration system, comprising the non-preloaded deceleration cylinder and the deceleration cable described in any of the above claims.
[0016] According to the above description, the present invention discloses the following technical effects:
[0017] The pressure relief cylinder without preload provided by this invention has a guide rod with a front end diameter equal to the upper limit flow orifice diameter. The force-bearing rod moves downwards under force. When the front end of the guide rod passes the upper limit flow orifice, a sealed space is formed inside the main air cylinder. The piston moves downwards, compressing the air inside the main air cylinder. The guide rod moves downwards, and its rear end diameter is smaller than the upper limit flow orifice diameter. When the rear end of the guide rod passes through the upper limit flow orifice, the compressed air inside the main air cylinder can be released downwards through the upper limit flow orifice. When the piston reaches the position of the upper partition, the guide rod can no longer move downwards, and the compressed gas is released through the one-way exhaust assembly until the air pressure inside the main air cylinder is the same as the external air pressure. Simultaneously, the return air assembly draws air into the main air cylinder, pushing the guide rod upwards to reset, and the above process is repeated, thereby achieving one-way pressure relief. This pressure relief achieves pressure relief and provides a simple and cost-effective structure. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the non-preloaded deceleration system provided in an embodiment of the present invention;
[0020] Among them, 1-force-bearing rod, 2-outer sleeve, 3-retaining ring, 4-reset device, 5-piston, 6-upper partition, 7-middle partition, 8-lower baffle, 9-one-way exhaust assembly, 10-main air cylinder, 11-upper limit flow hole, 12-front end of guide rod, 13-middle limit flow hole, 14-lower limit flow hole, 15-return air assembly. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] One of the objectives of this invention is to provide a pressure relief cylinder without preload, which can achieve unidirectional pressure relief and achieve blocking through pressure relief. It has a simple structure and high cost performance.
[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0024] like Figure 1As shown in the embodiment of this specification, a pressure relief cylinder without preload is provided, including a force-bearing rod 1, a main air cylinder 10, a piston 5, a guide rod, an upper baffle 6, a lower baffle 8, a one-way exhaust assembly 9, and a return air assembly 15. The piston 5 is located at the lower end of the force-bearing rod 1. The force-bearing rod 1, under force, pushes the piston 5 downwards, compressing the gas inside the main air cylinder 10. The piston 5 is fixedly connected to the rear end of the guide rod. The diameter of the front end 12 of the guide rod is larger than the diameter of the rear end of the guide rod. The upper baffle 6 is located inside the main air cylinder 10 and has an upper limit flow hole 11. The diameter of the front end 12 of the guide rod is equal to the diameter of the upper limit flow hole 11. The downward movement of the piston 5 causes the guide rod to move downwards. During the downward movement, the front end 12 of the guide rod contacts the upper flow hole 11. As the front end 12 of the guide rod passes through the upper flow hole 11, the main air cylinder 10 forms a sealed space. The piston 5 moves downward to compress the gas in the main air pipe. When the rear end of the guide rod passes through the upper flow hole 11, since the diameter of the rear end of the guide pipe is smaller than the diameter of the upper flow hole 11, there is a gap between the rear end of the guide rod and the upper flow hole 11. The compressed gas in the main air cylinder 10 moves downward through this gap to release pressure. When the piston 5 moves to the upper partition 6, the piston 5 and the guide rod no longer move downward. At this time, the air pressure in the main air cylinder 10 reaches its maximum value. The lower baffle 8 is located at the lower end of the main air cylinder 10. The lower baffle 8 is provided with two lower flow limiting holes 14. The two lower flow limiting holes 14 are respectively used to communicate with the one-way exhaust assembly 9 and the return air assembly 15. Both the one-way exhaust assembly 9 and the return air assembly 15 are connected to the main air cylinder 10. The one-way exhaust assembly 9 is used to discharge part of the gas in the main air cylinder 10, and the return air assembly 15 is used to fill the main air cylinder 10 with air, so that the piston 5 and the guide rod return to the initial position and depressurize again.
[0025] In use, the force-bearing rod 1 moves downward under force. When the front end 12 of the guide rod passes the upper limit flow hole 11, a sealed space is formed inside the main air cylinder 10. The piston 5 moves downward, compressing the air inside the main air cylinder 10. The guide rod moves downward, and the diameter of the rear end of the guide rod is smaller than the diameter of the upper limit flow hole 11. When the rear end of the guide rod passes through the upper limit flow hole 11, the compressed air inside the main air cylinder 10 can be released downward through the upper limit flow hole 11. When the piston 5 reaches the position of the upper partition 6, the guide rod can no longer move downward. The compressed gas will be released through the one-way exhaust assembly 9 until the air pressure inside the main air cylinder 10 is the same as the outside air pressure. At the same time, the return air assembly 15 draws air into the main air cylinder 10, pushing the guide rod upward to reset. The above process is repeated to achieve one-way pressure relief and achieve blocking through pressure relief.
[0026] The device also includes a reset device 4 and an outer sleeve 2. The reset device 4 is used to help the piston 5 and the guide rod return to their initial positions. The upper part of the force rod 1 is fixedly connected to the outer sleeve 2. The outer sleeve 2 is sleeved on the upper part of the main air cylinder 10. One end of the reset device 4 is connected to the outer sleeve 2, and the other end of the reset device 4 is connected to the lower baffle 8. The outer sleeve 2 is used to realize the connection between the force rod 1 and the reset device 4. So that when the force rod 1 moves downward under force, the reset device 4 is compressed, so that the reset device 4 can help the guide rod and the piston 5 return to their initial positions.
[0027] The device also includes a retaining ring 3. The end of the outer sleeve 2 is provided with a retaining ring 3. The reset device 4 is connected to the retaining ring 3. The setting of the retaining ring 3 facilitates the connection between the reset device 4 and the outer sleeve 2.
[0028] The reset device 4 is preferably a spring, which has a simple structure and is easy to assemble.
[0029] The spring is sleeved on the outside of the main air cylinder 10. Multiple springs can also be installed, with the multiple springs evenly distributed on the outer circumference of the main air cylinder 10.
[0030] The device also includes a middle partition 7, which is disposed between the upper partition 6 and the lower baffle 8. The middle partition 7 is provided with a middle flow limiting hole 13, the diameter of which is larger than the diameter of the front end 12 of the guide rod. The middle flow limiting hole 13 is located at the center of the middle partition 7, and the upper flow limiting hole 11 is located at the center of the upper partition 6. The function of the middle partition 7 is the same as that of the upper partition 6, which is to achieve obstruction through the release of compressed gas. The only difference between the middle partition 7 and the upper partition 6 is their placement.
[0031] The one-way exhaust assembly 9 is preferably a one-way exhaust valve, but a valve core can also be used.
[0032] The return air assembly 15 is preferably a return air valve, but other return air assemblies 15 commonly used in the prior art with return air function can also be used.
[0033] The front end 12 of the guide rod is preferably cylindrical, which makes the front end 12 of the guide rod easy to process and has a simple structure.
[0034] The present invention also provides a non-preloaded arresting deceleration system, comprising the non-preloaded arresting pressure relief cylinder and arresting cable of any of the above, for use in aircraft arresting.
[0035] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to the method section.
[0036] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. A pressure relief cylinder without preload, characterized in that, The device includes a force-bearing rod, a main air cylinder, a piston, a guide rod, an upper partition, a lower baffle, a one-way exhaust assembly, and a return air assembly. The piston is located at the lower end of the force-bearing rod and is fixedly connected to the rear end of the guide rod. The diameter of the front end of the guide rod is larger than the diameter of the rear end. The upper partition is located inside the main air cylinder and has an upper flow limit hole. The diameter of the front end of the guide rod is equal to the diameter of the upper flow limit hole. The lower baffle is located at the lower end of the main air cylinder and has the one-way exhaust assembly and the return air assembly. Both the one-way exhaust assembly and the return air assembly are connected to the main air cylinder. The one-way exhaust assembly is used to discharge part of the gas in the main air cylinder, and the return air assembly is used to fill the main air cylinder with gas. It also includes a reset device and an outer sleeve. The upper part of the force-bearing rod is fixedly connected to the outer sleeve. The outer sleeve is sleeved on the upper part of the main air cylinder. One end of the reset device is connected to the outer sleeve, and the other end of the reset device is connected to the lower baffle. It also includes a middle partition plate, which is disposed between the upper partition plate and the lower baffle plate. The middle partition plate is provided with a middle flow-limiting hole. The diameter of the middle flow-limiting hole is larger than the front end diameter of the guide rod. The middle flow-limiting hole is located at the center of the middle partition plate, and the upper flow-limiting hole is located at the center of the upper partition plate.
2. The pressure relief cylinder without preload as described in claim 1, characterized in that, It also includes a retaining ring, which is provided at the end of the outer sleeve, and the reset device is connected to the retaining ring.
3. The pressure relief cylinder without preload as described in claim 1, characterized in that, The reset device includes a spring.
4. The pressure relief cylinder without preload as described in claim 3, characterized in that, The spring is sleeved on the outside of the main air cylinder.
5. The pressure relief cylinder without preload as described in claim 1, characterized in that, The one-way exhaust assembly is a one-way exhaust valve.
6. The pressure relief cylinder without preload as described in claim 1, characterized in that, The return air assembly is a return air valve.
7. The pressure relief cylinder without preload as described in claim 1, characterized in that, The front end of the guide rod is cylindrical.
8. A deceleration system without preload, characterized in that, Includes the non-preloaded pressure relief cylinder and the arresting steel cable as described in any one of claims 1 to 7.