Ball-lock type gas flow protection cover of the restraint release device

Abstract

The present invention provides a ball-lock type gas flow protection cover for a restraint release device, comprising: a movable cover, a pulling lock, a fixed cover, an energy storage mechanism and a rotating shaft; the energy storage mechanism is arranged on both sides of the fixed cover and fixedly connected to the fixed cover; the fixed cover and the movable cover are arranged on the rotating shaft; the fixed cover and the movable cover are detachably connected through the pulling lock, and when the pulling lock is pulled, the pulling lock is unlocked and the fixed cover and the movable cover are disconnected; the energy storage mechanism is used to drive the movable cover 1 to rotate and close to protect the restraint arm. The present invention can achieve high-load and high-reliability locking, low-power unlocking, automatic closing of the movable cover, and effectively and reliably achieve thermal protection for the restraint release device.

Description

Technical Field

[0001] The present invention relates to ground support equipment for launch vehicle launches, and more particularly, to a ball-lock type gas flow protection cover for a restraint release device. Background Art

[0002] The restraint release technology originated in the 1950s and is a technology commonly used abroad when vertically launching launch vehicles. It can terminate the launch of a rocket when a malfunction occurs in the launch vehicle and payload before launch and within a few seconds after ignition, and is an important technical means to improve launch reliability and ensure the safety of the launch site. After adopting this technology, within a few seconds after the engine ignites, the launch vehicle is still fixed to the launch pad through the restraint release system. After the fault detection system detects that the key equipment on the launch vehicle is working properly and the engine thrust reaches the rated value, the restraint release system releases the launch vehicle, and the launch vehicle takes off safely.

[0003] With the increasing requirements of major spacefaring countries around the world for the launch stability and reliability of launch vehicles, the restraint release system, as an effective means to improve the launch reliability of launch vehicles, has been widely used on large foreign rockets, such as the Saturn series, Atlas series in the United States, and Proton in Russia. With the continuous improvement of the requirements for launch vehicle launch reliability, the restraint release technology has become one of the key technologies that need to be solved urgently in the current development of high-reliability launch vehicles.

[0004] After the rocket takes off, the restraint release device is washed by the gas flow. The restraint arm of the restraint release device is a mechanism device and cannot achieve thermal protection through the direct coating method of a protective layer. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a protection cover with high-reliability locking. After the rocket takes off, it automatically unlocks, the moving protection cover is closed in a loop, and the restraint arm is protected.

[0006] The ball-lock type gas flow protection cover for a restraint release device according to the present invention includes: a moving protection cover, a pulling lock, a fixed protection cover, an energy storage mechanism, and a rotating shaft;

[0007] The energy storage mechanism is arranged on both sides of the fixed protection cover and is fixedly connected to the fixed protection cover;

[0008] The fixed protection cover and the moving protection cover are arranged on the rotating shaft;

[0009] The fixed protection cover and the moving protection cover are detachably connected through the pulling lock. When the pulling lock is pulled, the pulling lock is unlocked, and the fixed protection cover and the moving protection cover are disconnected;

[0010] The energy storage mechanism is used to drive the movable shield 1 to rotate and close to protect the restraint arm.

[0011] Preferably, the fixed shield and the movable shield have the same rotation center and are arranged on the restraint release device through a rotating shaft.

[0012] Preferably, the pulling lock includes: a lever, a base, a tension spring, a telescopic rod and a connecting block;

[0013] The base is fixed on the movable shield;

[0014] The base includes a first inner cavity, a second inner cavity and a third inner cavity that communicate with each other; the lever is arranged in the first inner cavity; the telescopic rod is arranged in the second inner cavity; the tension spring is arranged in the third inner cavity; the middle part of the lever is connected to the tension spring;

[0015] The lever is rotatably connected to the base through a rotating shaft;

[0016] The upper end of the telescopic rod is hinged to one end of the lever, and the other end of the lever is connected to the pulling rod;

[0017] The telescopic rod includes a first cylindrical section, a second cylindrical section and a third cylindrical section that are connected to each other; a compression spring is sleeved on the first cylindrical section, and the compression spring is limited between the upper end surface of the second cylindrical section and the upper wall surface of the second inner cavity;

[0018] Ball bearings are arranged in the boss holes on both sides of the base, and ball sockets are arranged on the corresponding two sides of the connecting block, so that the base and the connecting block are connected through the ball bearings;

[0019] When the pulling lock is locked, the second cylindrical section seals the inner section of the boss hole. When the pulling lock is pulled, the telescopic rod moves upward, the third cylindrical section corresponds to the boss hole, the ball bearings roll to fit with the third cylindrical section, and the base and the connecting block are unlocked.

[0020] Preferably, the inner diameter of the boss hole gradually increases from the ball socket to the direction of the telescopic rod, so that the ball bearings can roll in the boss hole.

[0021] Preferably, the cross-section of the first cylindrical section is circular, and the cross-sections of the second cylindrical section and the third cylindrical section are square;

[0022] The side length of the second cylindrical section is smaller than that of the third cylindrical section.

[0023] Preferably, the first cylindrical section is provided with a through hole, and is rotatably connected to the U-shaped opening arranged at one end of the lever through the through hole.

[0024] Preferably, it further includes: a left-handed threaded adjusting rod, a connecting shaft, a right-handed threaded adjusting rod, and a base connecting block;

[0025] The lower end of the connecting block is connected to the left-handed threaded adjusting rod through a first pin shaft;

[0026] The base connecting block is used to be fixed on the restraint release device, and the base connecting block is connected to the right-handed threaded adjusting rod through a second pin shaft;

[0027] One end of the connecting shaft has a left-handed thread and the other end has a right-handed thread. The left-handed thread is connected to the left-handed threaded adjusting rod, and the right-handed thread is connected to the right-handed threaded adjusting rod.

[0028] Preferably, the energy storage mechanism includes a push rod, an end cover, a support body, and a compression spring;

[0029] The support body is provided with an inner cavity; the end cover is arranged on the end face of the support body to close the inner cavity, and the end cover is provided with an opening;

[0030] The push rod is arranged in the inner cavity and can slide along the inner cavity; the outer end of the push rod extends out of the inner cavity through the opening;

[0031] A shoulder is arranged in the middle of the push rod, and the compression spring is sleeved on the push rod and limited between the shoulder and the bottom end of the inner cavity;

[0032] The outer end of the push rod contacts the end face of the moving shield 1.

[0033] Preferably, both ends of the push rod are of a cylindrical structure, and the end cover side is of a spherical head structure.

[0034] Preferably, the end cover and the support body are fastened by screws.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention can achieve high-load and high-reliability locking, low-power unlocking, automatic closing of the moving shield, and can effectively and reliably achieve thermal protection for the restraint release device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present invention will become more apparent:

[0038] Figure 1 It is a schematic structural diagram of the ball lock type gas flow protection cover of the restraint release device in the embodiment of the present invention;

[0039] Figure 2It is a structural cross-sectional view of the traction lock in the embodiment of the present invention;

[0040] Figure 3 It is a partial cross-sectional view of the traction lock in the embodiment of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the telescopic rod in the embodiment of the present invention;

[0042] Figure 5 It is a structural schematic diagram of the energy storage mechanism in the embodiment of the present invention. Detailed implementation manners

[0043] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made. These all belong to the protection scope of the present invention.

[0044] Figure 1 It is a structural schematic diagram of the ball-lock type gas flow protection cover of the restraint release device in the embodiment of the present invention. As Figure 1 shown, the ball-lock type gas flow protection cover of the restraint release device provided by the present invention includes a movable cover 1, a traction lock 2, a fixed cover 3, an energy storage mechanism 4 and a rotating shaft 5;

[0045] The energy storage mechanism 4 is arranged on both sides of the fixed cover 3 and is fixedly connected to the fixed cover 3;

[0046] The fixed cover 3 and the movable cover 1 are arranged on the rotating shaft 5,

[0047] The fixed cover 3 and the movable cover 1 are detachably connected through the traction lock 2. When the traction lock 2 is pulled, the traction lock 2 is unlocked, the fixed cover 3 and the movable cover 1 are disconnected, and the energy storage mechanism 4 drives the movable cover 1 to rotate and close to protect the restraint arm;

[0048] The fixed cover 3 and the movable cover 1 have the same rotation center and are arranged on the restraint release device through the rotating shaft 5.

[0049] Figure 2 It is a structural cross-sectional view of the traction lock in the embodiment of the present invention, Figure 3 It is a partial cross-sectional view of the traction lock in the embodiment of the present invention, Figure 4 It is a structural schematic diagram of the telescopic rod in the embodiment of the present invention. As Figure 2 , Figure 3 , Figure 4 shown, the traction lock 2 includes: a lever 201, a base 202, a tension spring 204, a telescopic rod 205 and a connecting block 206;

[0050] The base 202 is fixed on the movable shield 1;

[0051] The base 202 includes a first inner cavity, a second inner cavity, and a third inner cavity that communicate with each other; the lever 201 is disposed in the first inner cavity; the telescopic rod 205 is disposed in the second inner cavity; the tension spring 204 is disposed in the third inner cavity;

[0052] The lever 201 is rotatably connected to the base 202 through a rotating shaft 213;

[0053] The upper end of the telescopic rod 205 is hinged to one end of the lever 201, and the other end of the lever 201 is connected to the pull rod 203;

[0054] The telescopic rod 205 includes a first cylindrical section, a second cylindrical section, and a third cylindrical section that are connected to each other; a compression spring 212 is sleeved on the first cylindrical section, and the compression spring 212 is limited between the upper end surface of the second cylindrical section and the upper wall surface of the second inner cavity;

[0055] Ball bearings 214 are provided in the boss holes on both sides of the base 202, and ball sockets 215 are provided on the corresponding two sides of the connecting block 206, so that the base 202 and the connecting block 206 are connected through the ball bearings 214;

[0056] When the pull lock 2 is locked, the second cylindrical section seals the inner section of the boss hole. When the pull lock 2 is pulled, the telescopic rod 205 moves upward, the third cylindrical section corresponds to the boss hole, the ball bearings 214 roll to fit with the third cylindrical section, and the base 202 and the connecting block 206 are unlocked.

[0057] The inner diameter of the boss hole gradually increases from the ball socket 215 to the direction of the telescopic rod 205, so that the ball bearings 214 can roll in the boss hole.

[0058] The cross section of the first cylindrical section is circular, and the cross sections of the second cylindrical section and the third cylindrical section are square;

[0059] The side length of the second cylindrical section is smaller than that of the third cylindrical section.

[0060] The first cylindrical section is provided with a through hole, and is rotatably connected to a U-shaped opening provided at one end of the lever 201 through the through hole; the second cylindrical section of the telescopic rod 205 is matched with a square hole in the second inner cavity of the base 202;

[0061] The middle part of the lever 201 is connected to the tension spring 204.

[0062] The lower end of the connection block 206 is connected to the left-handed threaded adjustment rod 208 through a first pin shaft 207;

[0063] The base connection block 211 is used to be fixed on the restraint release device, and the base connection block 211 is connected to the right-handed threaded adjustment rod 210 through a pin shaft;

[0064] One end of the connection shaft 209 has a left-handed thread and the other end has a right-handed thread. The left-handed thread is connected to the left-handed threaded adjustment rod 208, and the right-handed thread is connected to the right-handed threaded adjustment rod 210.

[0065] Figure 5 is a schematic structural diagram of the energy storage mechanism in an embodiment of the present invention, as Figure 5 shown, the energy storage mechanism 4 includes a top rod 401, an end cover 402, a support body 403 and a compression spring 404;

[0066] The support body 403 is provided with an inner cavity; the end cover 402 is arranged on the end face of the support body 403 to close the inner cavity, and the end cover 402 is provided with an opening;

[0067] The top rod 401 is arranged in the inner cavity and can slide along the inner cavity; the outer end of the top rod 401 extends out of the inner cavity through the opening;

[0068] A shoulder is arranged in the middle of the top rod 401, and the compression spring 404 is sleeved on the top rod 401 and limited between the shoulder and the bottom end of the inner cavity;

[0069] Both ends of the top rod are of a cylindrical structure, and the side of the end cover 402 is of a ball head structure; the end cover 402 and the support body 403 are fastened by screws; the outer end of the top rod 401 is in contact with the end face of the moving shield 1.

[0070] When using the ball-lock type gas flow protection cover of the restraint release device provided by the present invention, the specific action implementation process is as follows:

[0071] Combined with Figure 2 、 Figure 3 , after the rocket is ignited, it drives the pulling rope to realize the pulling of the pull rod 213; the lever 201 rotates clockwise around the rotating shaft 213, and one end of the lever 201 drives the telescopic rod 205 to compress the compression spring 212. After the telescopic rod 205 moves a certain distance, the steel ball 214 falls off from the ball socket 215 and is parked in the groove formed by the telescopic rod 205 and the boss hole, and the base 202 is disengaged from the connection block 206.

[0072] Combined with Figure 1 、 Figure 5, since the base 202 is disengaged from the connecting block 206, the backward pulling force of the moving shield 1 disappears; the compression spring 404 drives the ejector rod 401 to extend, and the ejector rod 401 drives the moving shield 1 to rotate around the rotating shaft 5, thereby realizing the closing of the moving shield 1.

[0073] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A ball-lock type gas flow protection cover of a restraint release device, characterized in that, Comprising: A movable shield, a pulling lock, a fixed shield, an energy storage mechanism, and a rotating shaft; The energy storage mechanism is arranged on both sides of the fixed shield and is fixedly connected to the fixed shield; The fixed shield and the movable shield are arranged on the rotating shaft; The fixed shield and the movable shield are detachably connected by the pulling lock. When the pulling lock is pulled, the pulling lock is unlocked, and the fixed shield and the movable shield are disconnected; The energy storage mechanism is used to drive the movable shield (1) to rotate and close to protect the restraint arm; The pulling lock includes: a lever, a base, a tension spring, a telescopic rod, and a connecting block; The base is fixed on the movable shield; The base includes a first inner cavity, a second inner cavity, and a third inner cavity that communicate with each other; The lever is arranged in the first inner cavity; The telescopic rod is arranged in the second inner cavity; The tension spring is arranged in the third inner cavity; The middle of the lever is connected to the tension spring; The lever is rotatably connected to the base through a rotating shaft; The upper end of the telescopic rod is hinged to one end of the lever, and the other end of the lever is connected to the pull rod; The telescopic rod includes a first cylindrical section, a second cylindrical section, and a third cylindrical section that are connected; A compression spring is sleeved on the first cylindrical section, and the compression spring is limited between the upper end face of the second cylindrical section and the upper wall surface of the second inner cavity; Ball bearings are arranged in the boss holes on both sides of the base, and ball sockets are arranged on the corresponding two sides of the connecting block, so that the base and the connecting block are connected through the ball bearings; When the pulling lock is locked, the second cylindrical section seals the inner section of the boss hole. When the pulling lock is pulled, the telescopic rod moves upward, the third cylindrical section corresponds to the boss hole, the ball bearings roll to fit with the third cylindrical section, and the base and the connecting block are unlocked.

2. The ball-lock type gas flow protection cover of the restraint release device according to claim 1, characterized in that, The fixed shield and the movable shield have the same rotation center and are used to be arranged on the restraint release device through the rotating shaft.

3. The ball-lock type gas flow protection cover of the restraint release device according to claim 1, characterized in that, The inner diameter of the boss hole gradually increases from the ball socket to the direction of the telescopic rod, so that the ball bearings can roll in the boss hole.

4. The ball-lock type gas flow protection cover of the restraint release device according to claim 1, characterized in that, The cross section of the first cylindrical section is circular, and the cross sections of the second cylindrical section and the third cylindrical section are square; The side length of the second cylindrical section is smaller than that of the third cylindrical section.

5. The ball-lock type gas flow protection cover of the restraint release device according to claim 1, characterized in that, The first cylindrical section is provided with a through hole, and is rotatably connected to the U-shaped opening arranged at one end of the lever through the through hole.

6. The ball-lock type gas flow protection cover of the restraint release device according to claim 1, characterized in that, Further comprising: A left-handed threaded adjusting rod, a connecting shaft, a right-handed threaded adjusting rod, and a base connecting block; The lower end of the connecting block is connected to the left-handed threaded adjusting rod through a first pin shaft; The base connecting block is used to be fixed on the restraint release device, and the base connecting block is connected to the right-handed threaded adjusting rod through a second pin shaft; One end of the connecting shaft is left-handed threaded and the other end is right-handed threaded. The left-handed thread is connected to the left-handed threaded adjusting rod, and the right-handed thread is connected to the right-handed threaded adjusting rod.

7. The ball-lock type gas flow protection cover of the restraint release device according to claim 1, characterized in that, The energy storage mechanism includes a push rod, an end cover, a support body, and a compression spring; The support body is provided with an inner cavity; The end cover is arranged on the end face of the support body to seal the inner cavity, and the end cover is provided with an opening; The ejector rod is arranged inside the inner cavity body and can slide along the inner cavity body; the outer end of the ejector rod extends out of the inner cavity body through the opening; A shoulder is arranged in the middle of the ejector rod, and the compression spring is sleeved on the ejector rod and limited between the shoulder and the bottom end of the inner cavity body; The outer end of the ejector rod contacts the end face of the moving shield (1).

8. The ball-lock type gas flow protection cover of the restraint release device according to claim 7, characterized in that, Both ends of the ejector rod are of cylindrical structure, and the end cover side is of ball head structure.

9. The ball-lock type gas flow protection cover of the restraint release device according to claim 7, characterized in that, The end cover and the support body are fastened by screws.

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