Rocket launching reliable back-up, no rebound back-up buffer cylinder

Abstract

The present application relates to a kind of air cylinders, in particular to a kind of reliable backward, no rebound backward buffering cylinder for rocket launching, including cylinder body, cylinder piston rod, cylinder piston, spring, buffer cylinder body, buffer piston, throttle rod, connecting piece, the cylinder body one end is provided with air inlet, the buffer cylinder body, the buffer piston, the throttle rod all are located in the rodless cavity of the cylinder body, the center line of the cylinder piston, the throttle rod, the buffer piston is on same straight line, the rodless cavity of buffer cylinder body is filled with hydraulic oil, the buffer cylinder body is provided with pressure tap, the end of the buffer piston in the buffer cylinder body is provided with through hole, the other end of the throttle rod is arranged in the through hole, clearance is left between the through hole and the throttle rod, clearance forms annular throttling oil channel.The present application can drive support arm to reliably and quickly backward after rocket ignition and there is no rebound after backward.

Description

TECHNICAL FIELD

[0001] The present application relates to a cylinder, in particular to a reliable backward, no rebound backward buffer cylinder for rocket launching. BACKGROUND

[0002] In the field of aerospace launch technology, the support arm is an important structure to support the rocket body. For the waist support rocket support arm, it is necessary to take the backward measure to avoid the support arm supporting part interfering with the rocket body, nozzle and other structures after the aircraft takes off and separates. Space engineering has very high requirements for reliability and safety, and the support arm needs to be reliably and quickly backward after the rocket is ignited. Because the main body of the support arm generally has a large weight, it has a large kinetic energy during the rapid backward process, and the support arm is easy to rebound after backward. If the rebounding support arm collides with the rocket body after taking off, it will affect the safety of taking off. Therefore, a non-rebound support arm is urgently needed. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a reliable backward, no rebound backward buffer cylinder for rocket launching, which can drive the support arm to reliably and quickly backward after the rocket is ignited and has no rebound after backward.

[0004] In order to solve the above technical problems, the present application provides the following technical solutions:

[0005] The present application relates to a cylinder, in particular to a reliable backward, no rebound backward buffer cylinder for rocket launching.

[0006] Further, the cylinder piston comprises a piston base connected to the cylinder piston rod and a piston ring connected to the outer wall of the piston base, and the piston ring is in contact with the inner wall of the cylinder body.

[0007] Further, the spring is divided into a first spring section and a second spring section, the outer wall of the cylinder piston rod is connected with a spring partition plate, a first rigid support plate and a second rigid support plate, the first rigid support plate and the second rigid support plate are respectively located on the two sides of the spring partition plate, the first spring section is sleeved on the first rigid support plate, the second spring section is sleeved on the second rigid support plate, the width of the first rigid support plate is equal to the length of the first spring section after being completely compressed, and the width of the second rigid support plate is equal to the length of the second spring section after being completely compressed.

[0008] Further, the cylinder body comprises a front end cover, a rear end cover and a cylinder barrel connected with each other, the inner ring of the front end cover is in contact with the cylinder piston rod, and the air inlet is arranged on the rear end cover.

[0009] Further, a bushing is further arranged, and the bushing is connected to the inner ring of the front end cover and in contact with the cylinder piston rod.

[0010] Further, a connecting piece is further arranged, and the connecting piece is connected to one end of the cylinder piston rod located outside the cylinder body, the connecting piece is used for connecting a supported piece, and the connecting piece is a rod end bearing.

[0011] Further, a mounting piece is further arranged, and the mounting piece is a lug arranged on the rear end cover, and the cylinder body is connected with the supported piece through the lug.

[0012] Further, a pressure measuring channel is arranged on the rear end cover, and the pressure measuring channel is in communication with the pressure measuring port.

[0013] Further, the outer wall of the throttle rod is in a stepped shape, and the diameter of one end of the throttle rod away from the bumper piston is greater than the diameter of the other end of the throttle rod close to the bumper piston.

[0014] Further, a center hole extending in the length direction is arranged in the throttle rod, the pressure measuring channel is in communication with the center hole, and a pressure measuring connector is arranged at the end of the pressure measuring channel.

[0015] Compared with the prior art, the reliable backward movement and non-rebound backward movement buffer cylinder for rocket launching has at least the following beneficial effects:

[0016] The reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching comprises a buffer cylinder body, a buffer piston and a throttle rod, the buffer piston is a hollow piece, a gap is left between the through hole at the end of the buffer piston and the throttle rod, the gap forms an annular throttle oil channel, and the center lines of the cylinder piston, the throttle rod and the buffer piston are on the same line, so that when the support arm is back-rolled, the cylinder piston compresses the buffer piston, the back-rolling energy dissipation of the support arm is realized by liquid throttling, the kinetic energy of the support arm is converted into internal energy of the liquid, the support arm is back-rolled quickly without bounce, and the air inlet and the pressure measuring port are separated.

[0017] The reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching.

[0019] Figure 2 It is an axonometric view of the reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching.

[0020] Figure 3 It is a sectional view of the reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching.

[0021] Figure 4 It is a sectional view of the reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching when it is retracted to the position.

[0022] Figure 5 It is a structural schematic view of the reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching when it is installed on the support arm and in the supporting state.

[0023] Figure 6 It is a structural schematic view of the reliable back-rolling and bounce-free back-rolling buffer cylinder for rocket launching when it is installed on the support arm and in the back-rolling to position state. DETAILED DESCRIPTION

[0024] As Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the reliable back-rolling and non-rebound back-rolling buffer cylinder for rocket launching of the present application comprises a cylinder body 01, a cylinder piston rod 02, a cylinder piston 03, a spring 04, a buffer cylinder body 05, a buffer piston 06, a throttle rod 07, a connecting piece 08 and a mounting piece. The cylinder piston 03 is connected to one end of the cylinder piston rod 02, and a sealing device is arranged between the cylinder piston 03 and the cylinder body 01. The spring 04 is sleeved on the cylinder piston rod 02 and located between the front end of the cylinder body 01 and the cylinder piston 03. One end of the rodless cavity of the cylinder body 01 is provided with an air inlet 14. The connecting piece 08 is connected to the end of the cylinder piston rod 02 outside the cylinder body 01, and is used for connecting a supported piece. The mounting piece is connected to the end of the cylinder body 01 away from the cylinder piston rod 02, and the cylinder body 01 is connected with the supported piece through the mounting piece. The buffer cylinder body 05, the buffer piston 06 and the throttle rod 07 are all located in the rodless cavity of the cylinder body 01. The buffer cylinder body 05 is connected to the rear end of the cylinder body 01. The buffer piston 06 is a hollow piece. One end of the throttle rod 07 and the buffer piston 06 is arranged in the buffer cylinder body 05. The buffer piston 06 is adapted to slide along the axial direction relative to the buffer cylinder body 05. The throttle rod 07 is arranged along the length direction of the buffer cylinder body 05. The center lines of the cylinder piston 03, the throttle rod 07 and the buffer piston 06 are on the same straight line. One end of the throttle rod 07 is connected to the buffer cylinder body 05. The rodless cavity of the buffer cylinder body 05 is filled with hydraulic oil and high-pressure gas. The buffer cylinder body 05 is provided with a pressure measuring port. One end of the buffer piston 06 arranged in the buffer cylinder body 05 is provided with a through hole 61. The other end of the throttle rod 07 is arranged in the through hole 61. A gap is left between the through hole 61 and the throttle rod 07, and the gap forms an annular throttle oil passage. Figure 5 As shown, in the present embodiment, when the reliable back-rolling and non-rebound back-rolling buffer cylinder for rocket launching of the present application is connected to the support arm 10, the connecting piece 08 and the mounting piece are respectively hinged to the upper and lower hinge ends of the support arm 10.

[0025] The use process of the reliable back-rolling and non-rebound back-rolling buffer cylinder for rocket launching of the present application is as follows:

[0026] 1) To realize the vertical lifting of the support arm: high-pressure gas is filled into the rodless cavity of the cylinder body 01 through the air inlet 14. When the pressure in the rodless cavity of the cylinder body 01 is greater than the sum of the pressure of the spring 04 in the rod cavity and the axial component of the gravity of the support arm 10, the support arm 10 is lifted vertically. Figure 5 As shown, at the same time, the spring 04 is continuously compressed to store elastic potential energy until the support arm 10 is lifted vertically to 90°.

[0027] 2) pre-launch detection action: before the rocket is launched, the pressure in the buffer cylinder 05 needs to be measured, the specific method is to use a handheld pressure gauge or an online pressure sensor to access the pressure measuring port, which can directly read the air pressure value in the buffer cylinder 05, when the air pressure does not meet the minimum pressure requirement, use the inflation device to supplement the pressure;

[0028] 3) pre-launch deflation action: before the rocket is launched, the high-pressure gas in the rodless cavity of the air cylinder cylinder 01 is discharged, so that the present application can continuously exert a pulling load on the supporting arm 10 under the action of the spring 04, at this time the rocket has not left the supporting arm 10, and the supporting arm 10 cannot be reversed;

[0029] 4) supporting arm reverse action: after the rocket leaves the supporting arm 10, the supporting arm 10 is reversed around the supporting arm lower end support under the action of the spring 04;

[0030] 5) buffer braking: when the supporting arm 10 approaches the reverse in place state, the rear end face of the air cylinder piston rod 02 contacts and collides with the front end head of the buffer piston 06, and the buffer piston 06 is compressed, the hydraulic oil in the buffer cylinder 05 is forced to flow through the annular throttling oil way between the buffer piston 06 and the buffer throttle rod 07 to generate flow resistance, forming a buffer braking force on the air cylinder piston rod 02, within the entire stroke range of the buffer piston 06, the buffer braking force can be provided to the air cylinder piston rod 02, when the supporting arm 10 is reversed to the position, the kinetic energy of the supporting arm 10 is completely converted into the internal energy of the liquid in the buffer cylinder 05, realizing the reverse of the supporting arm 10 without rebound, as shown in Figure 6 .

[0031] The reliable reverse and non-rebound reverse buffer cylinder for rocket launching of the present application comprises a buffer cylinder 05, a buffer piston 06, and a throttle rod 07, the buffer piston 06 is a hollow part, there is a gap between the through hole 61 at the end of the buffer piston 06 and the throttle rod 07, the gap forms an annular throttling oil way, and the center lines of the air cylinder piston 03, the throttle rod 07, and the buffer piston 06 are on the same straight line, so that when the supporting arm 10 is reversed, the air cylinder piston 03 compresses the buffer piston 06, liquid throttling is adopted to realize the energy dissipation of the reverse of the supporting arm 10, the kinetic energy of the supporting arm 10 is converted into internal energy of the liquid, so that the supporting arm is quickly reversed without rebound; and one end of the rodless cavity of the air cylinder cylinder 01 is provided with an air inlet 14, and the buffer cylinder 05 is provided with a pressure measuring port, realizing the separation of the air inlet and the pressure measuring port.

[0032] Optionally, the cylinder piston 03 comprises a piston base 31 connected to the cylinder piston rod 02 and a piston ring 32 connected to the outer wall of the piston base 31 and in contact with the inner wall of the cylinder body 01. Specifically, the piston base 31 is made of steel and is used to bear spring load and buffer load, and the piston ring 32 is made of copper and is used to slide with the inner wall of the cylinder body. The piston base 31 is connected to the cylinder piston rod 02 by a locking nut 33, and the piston ring 32 is screwed to the piston base 31. The outer surface of the piston ring 32 is provided with a sealing ring and a dustproof ring.

[0033] Optionally, the spring 04 is divided into a first spring section 41 and a second spring section 42, and the outer wall of the cylinder piston rod 02 is provided with a spring partition plate 21, a first rigid support plate 22 and a second rigid support plate 23, which are overlapped with the cylinder piston rod 02. The first rigid support plate 22 and the second rigid support plate 23 are respectively located on the two sides of the spring partition plate 21. The first spring section 41 is sleeved on the first rigid support plate 22, and the second spring section 42 is sleeved on the second rigid support plate 23. The first spring section 41 and the second spring section 42 form a series spring. The width of the first rigid support plate 22 is equal to the length of the first spring section 41 after being completely compressed, and the width of the second rigid support plate 23 is equal to the length of the second spring section 41 after being completely compressed. Specifically, the first rigid support plate 22 and the second rigid support plate 23 are both annular plates connected to the outer wall of the cylinder piston rod 02, and the spring partition plate 21 is a radial boss connected to the outer wall of the cylinder piston rod 02. During the lifting of the support arm, when high-pressure gas is filled into the rodless cavity of the cylinder body 01, the pressure in the rodless cavity of the cylinder body 01 is greater than the sum of the pressure of the spring 04 in the rod cavity and the axial component of the gravity of the support arm 10. The first spring section 41 and the second spring section 42 are continuously compressed to store elastic potential energy until the support arm 10 is lifted to 90°. The ends of the first rigid support plate 22 and the second rigid support plate 23 are pressed by the front end of the cylinder body 01, the spring partition plate 21 and the piston base 31. After the rocket leaves the support arm 10, the support arm 10 is reversed around the lower end of the support arm under the action of the tension of the first spring section 41 and the second spring section 42. If one of the two spring sections fails, the failed spring will not collapse due to the support of the first rigid support plate 22 and the second rigid support plate 23, and will still maintain the initial working height. Under the tension of the other non-failed spring, the support arm 10 can still be reversed, achieving redundant reversing power and meeting the high reliability requirements of aerospace engineering.

[0034] Optionally, the cylinder body 01 comprises a front end cover 11, a rear end cover 12 and a cylinder barrel 13 connected with each other, the inner ring of the front end cover 11 is in contact with the cylinder piston rod 02, and the air inlet 14 is arranged on the rear end cover 12. Specifically, the cylinder barrel 13 is connected with the front end cover 11 through bolts, and the inner ring of the front end cover 11 is provided with a dustproof ring. The buffer cylinder body 05 comprises a buffer front end cover 51 and a buffer cylinder barrel 52 connected with each other.

[0035] Optionally, a bushing 15 is further arranged, the bushing 15 is connected to the inner ring of the front end cover 11, and the bushing 15 is in contact with and cooperatively slides with the cylinder piston rod 02. The bushing 15 is made of copper.

[0036] Optionally, the connecting piece 08 is a rod end bearing. The rod end bearing is connected with one lug of the support arm 10, so that the support arm 10 can be conveniently erected and tilted backward.

[0037] Optionally, the mounting piece is a lug 121 arranged on the rear end cover 12, and the cylinder body 01 is mounted and connected with the supported piece through the lug 121.

[0038] Optionally, the rear end cover 12 is provided with a pressure measuring channel 122, and the pressure measuring channel 122 is in communication with a pressure measuring port on the buffer cylinder body 05.

[0039] Optionally, the outer wall of the throttle rod 07 is in a stepped shape, and the diameter of the end of the throttle rod 07 away from the buffer piston 06 is greater than the diameter of the end of the throttle rod 07 close to the buffer piston 06. The change in the diameter of the throttle rod 07 can ensure that the buffer load changes according to a required rule along with the compression stroke.

[0040] Optionally, the throttle rod 07 is provided with a central hole extending along the length direction, the pressure measuring channel 122 is in communication with the central hole, and the end of the pressure measuring channel 122 is provided with a pressure measuring connector 123. When the pressure in the buffer cylinder body 05 needs to be measured, a hand-held pressure gauge or an online pressure sensor can be connected to the pressure measuring connector 123, which is convenient and fast.

[0041] The above embodiments only describe the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application.

Claims

1. A reliable, non-rebound, reverse cushioning cylinder for rocket launchers, characterized in that, The cylinder piston is connected to one end of the cylinder piston rod (02), the spring (04) is sleeved on the cylinder piston rod (02), and the spring (04) is located between the front end of the cylinder cylinder body (01) and the cylinder piston (03), one end of the rodless cavity of the cylinder cylinder body (01) is provided with an air inlet (14), the buffer cylinder body (05), the buffer piston (06) and the throttle rod (07) are located in the rodless cavity of the cylinder cylinder body (01), the buffer cylinder body (05) is connected to the rear end of the cylinder cylinder body (01), the buffer piston (06) is a hollow part, one end of the throttle rod (07) and the buffer piston (06) is arranged in the buffer cylinder body (05), the throttle rod (07) is arranged along the length direction of the buffer cylinder body (05), the center lines of the cylinder piston (03), the throttle rod (07) and the buffer piston (06) are on the same straight line, one end of the throttle rod (07) is connected to the buffer cylinder body (05), the rodless cavity of the buffer cylinder body (05) is filled with hydraulic oil, the buffer cylinder body (05) is provided with a pressure measuring port, one end of the buffer piston (06) arranged in the buffer cylinder body (05) is provided with a through hole (61), the other end of the throttle rod (07) is arranged in the through hole (61), a gap is left between the through hole (61) and the throttle rod (07), and the gap forms an annular throttling oil channel.

2. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 1, wherein, The cylinder piston (03) comprises a piston seat (31) and a piston ring (32), the piston seat (31) is connected to the cylinder piston rod (02), and the piston ring (32) is connected to the outer wall of the piston seat (31) and in contact with the inner wall of the cylinder cylinder body (01).

3. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 1, wherein, The spring (04) is divided into a first spring section (41) and a second spring section (42), the cylinder piston rod (02) is provided with a spring partition plate (21), a first rigid support plate (22) and a second rigid support plate (23), the first rigid support plate (22) and the second rigid support plate (23) are respectively located on the two sides of the spring partition plate (21), the first spring section (41) is sleeved on the first rigid support plate (22), the second spring section (42) is sleeved on the second rigid support plate (23), and the width of the first rigid support plate (22) is equal to the length of the first spring section (41) after being completely compressed, and the width of the second rigid support plate (23) is equal to the length of the second spring section (41) after being completely compressed.

4. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 1, wherein, The cylinder body (01) comprises a front end cover (11), a rear end cover (12), and a cylinder barrel (13) connected with each other, the inner ring of the front end cover (11) is in contact with the cylinder piston rod (02), and the air inlet (14) is arranged on the rear end cover (12).

5. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 4, wherein, Further comprising a bushing (15) connected to the inner ring of the front end cover (11), the bushing (15) is in contact with the cylinder piston rod (02).

6. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 1, wherein, The connecting piece (08) is connected to one end of the cylinder piston rod (02) outside the cylinder body (01), the connecting piece (08) is used for connecting a supported member, and the connecting piece (08) is a rod end bearing.

7. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 4, wherein, Further comprising a mounting piece, which is a supporting lug (121) arranged on the rear end cover (12), and the cylinder body (01) is connected with a supported member through the supporting lug (121).

8. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 4, wherein, The rear end cover (12) is provided with a pressure measuring channel (122), and the pressure measuring channel (122) is in communication with the pressure measuring port.

9. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 8, wherein, The outer wall of the throttle rod (07) is stepped, and the diameter of one end of the throttle rod (07) away from the buffer piston (06) is greater than the diameter of the other end close to the buffer piston (06).

10. The reliable kickback, non-rebound kickback buffer cylinder for rocket launch vehicles of claim 9, wherein, The throttle rod (07) is provided with a center hole extending in the length direction, the pressure measuring channel (122) is in communication with the center hole, and the end of the pressure measuring channel (122) is provided with a pressure measuring connector (123).

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