Automatic limiting device for oscillating bar

Abstract

The invention relates to carrier rocket launching equipment, in particular to a swing rod automatic limiting device which comprises a limiting plate and a limiting mechanism, the limiting plate is used for being connected to a main shaft of a swing rod, the main shaft drives the limiting plate to swing, before a rocket is launched, the swing rod is in a rocket holding state, and in the rocket launching stage, the limiting mechanism drives the swing rod to swing. When the swing rod is in a swing state, one side edge of the limiting plate is an arrow holding side, the other side edge of the limiting plate is a swing side, the limiting mechanism comprises a limiting pin and a limiting pin driving part, and the limiting pin driving part is suitable for remote control and driving the limiting pin to stretch out or retract. The limiting pin is arranged on the limiting plate, the limiting pin is blocked on the arrow holding side edge or the swing side edge of the limiting plate when stretching out, the limiting pin driving part comprises a hydraulic cylinder, and a piston rod of the hydraulic cylinder is connected with the limiting pin and drives the limiting pin to move up and down. According to the invention, unattended operation can be realized, and the safety is higher in the use process.

Description

Technical Field

[0001] The present invention relates to a launch device for a launch vehicle, and particularly to a swing bar automatic limiting device. Background Art

[0002] Before the launch vehicle is launched, there is an action of swinging the swing bar open. The swing bar is a truss structure and is an important part of the ground launch support system. It is installed on a fixed service tower or the umbilical tower of a mobile launch platform. Before the rocket is launched, the swing bar is in the arrow-holding state, used to carry pipelines such as fuel filling, gas supply, air conditioning, and related cables to ensure reliable connection of the rocket-ground interface; during the launch stage, the swing bar drives the pipelines and cables to swing to a corresponding angular state, making way for the rocket to take off and ensuring the rocket takes off smoothly.

[0003] The arrow-holding state and the swing-open state of the swing bar are ensured by a limiting device to prevent the swing bar from making a mis-swinging action. The existing mechanical limiting mechanism requires on-site operation by personnel. When the rocket malfunctions and shuts down emergently, personnel must go to the launch area to operate the limiting mechanism, which has certain safety hazards. Personnel's misoperation or omission of operation will affect the rocket launch process and even delay the rocket launch. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a swing bar automatic limiting device that realizes unattended operation and has higher safety during use.

[0005] To solve the above technical problem, the present application provides the following technical solutions:

[0006] A swing bar automatic limiting device of the present invention includes a limiting plate and a limiting mechanism.

[0007] The limiting plate is used to be connected to the main shaft of the swing bar. The main shaft drives the limiting plate to swing. Before the rocket is launched, the swing bar is in the arrow-holding state. During the rocket launch stage, the swing bar is in the swing-open state. One side of the limiting plate is the arrow-holding side and the other side is the swing-open side.

[0008] The limiting mechanism includes a limiting pin and a limiting pin driving member. The limiting pin driving member is suitable for remote control. The limiting pin driving member is suitable for driving the limiting pin to extend or retract. When the limiting pin extends, it blocks the edge of the arrow-holding side or the swing-open side of the limiting plate.

[0009] Further, the limiting pin driving member includes a hydraulic cylinder. The piston rod of the hydraulic cylinder is connected to the limiting pin and drives the limiting pin to move up and down.

[0010] Further, a circumferential annular boss is provided in the middle of the limit pin. The limit pin driving member further includes a transfer rod. One end of the transfer rod is connected to the piston rod, and the other end is connected to the limit pin through a connecting pin. An emergency pin hole is provided in the middle of the limit pin.

[0011] Further, the limit mechanism further includes a limit device bracket. The limit pin driving member further includes a travel sensor and a striker structure. The hydraulic cylinder is connected to the top of the limit device bracket. The travel sensor includes a contact head, and the contact head is connected to the outer side wall of the limit device bracket. The striker structure is connected to the piston rod and moves synchronously with the piston rod. When the piston rod moves up or down to the end position, the striker structure collides with the contact head to stop the hydraulic cylinder from operating.

[0012] Further, the striker structure includes a first striker and a second striker. The limit device bracket includes a top plate, a left side plate, and a right side plate. The cylinder barrel of the hydraulic cylinder is connected to the outer wall of the top plate. The piston rod, the transfer rod, and the limit pin are all located between the left side plate and the right side plate. First through holes and second through holes extending along the length direction are respectively provided on the left side plate and the right side plate. When the piston rod moves up and down, the first striker and the second striker respectively move up and down in the first through hole and the second through hole. Third through holes and fourth through holes are respectively provided on the left side plate and the right side plate. There are two contact heads, and the two contact heads respectively correspond to the first striker and the second striker.

[0013] Further, the limit mechanism further includes a mounting seat. The mounting seat includes an upper flat plate, a lower flat plate, and a vertical plate. One side edge of the upper flat plate and the lower flat plate are both connected to the vertical plate. The upper flat plate and the lower flat plate are arranged at intervals and are parallel to each other. A first limit pin hole and a second limit pin hole are respectively provided on the upper flat plate and the lower flat plate. The mounting seat is located below the limit device bracket, and the bottom of the limit device bracket is connected to the upper flat plate. When the position of the limit plate is locked, the limit pin driving member drives the limit pin to pass through the first limit pin hole and the second limit pin hole.

[0014] Further, the mounting seat further includes a guide sleeve. The guide sleeve is connected to the upper flat plate and is located around the first limit pin hole. The limit pin passes through the guide sleeve and then extends into the first limit pin hole.

[0015] Further, the bottom of the limit pin is of a square structure, and grooves are provided on the four side surfaces of the bottom of the limit pin.

[0016] Further, the limiting plate includes a limiting plate body and a connecting end connected to each other. The connecting end is used to connect to the main shaft of the swing rod. The limiting plate body is a horizontally arranged flat plate. One side of the limiting plate body is the arrow-holding side, and the other side is the swinging-open side.

[0017] Further, the limiting plate further includes an attachment plate. The attachment plate is in the same plane as the limiting plate body, and the attachment plate is detachably connected to the limiting plate body.

[0018] Compared with the prior art, the swing rod automatic limiting device of the present invention has at least the following beneficial effects:

[0019] For an automatic swing rod limiting device of the present invention, since the limiting mechanism includes a limiting pin and a limiting pin driving member, and the limiting pin driving member is suitable for remote control, by remotely controlling the limiting pin driving member to drive the limiting pin to extend or retract to limit the swing rod, therefore, in the rocket launch process, the automatic swing rod limiting device of the present invention can achieve unattended operation, improve the safety of the product. At the same time, since when the limiting pin extends, it blocks at the edge of the arrow-holding side or the swinging-open side of the limiting plate, and the limit is achieved by the contact between the edge of the limiting plate and the limiting pin, the reliability is higher than that of the shaft-hole matching method, and the problem of locking jamming can be avoided.

[0020] The following further describes the automatic swing rod limiting device of the present invention with reference to the accompanying drawings. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the overall structure of the automatic swing rod limiting device of the present invention;

[0022] Figure 2 is a top view structural schematic diagram of the locking state of the automatic swing rod limiting device of the present invention when the swing rod holds the arrow;

[0023] Figure 3 is a top view structural schematic diagram of the locking state of the automatic swing rod limiting device of the present invention when the swing rod swings open;

[0024] Figure 4 is a front view structural schematic diagram of the unlocking state of the automatic swing rod limiting device of the present invention;

[0025] Figure 5 is a side view structural schematic diagram of the unlocking state of the automatic swing rod limiting device of the present invention;

[0026] Figure 6 is a front view structural schematic diagram of the locking state of the automatic swing rod limiting device of the present invention;

[0027] Figure 7 is a schematic diagram of the connection structure of the hydraulic cylinder, the adapter rod and the limiting pin in the automatic swing rod limiting device of the present invention;

[0028] Figure 8 Schematic structural view of the limiting device bracket in the swing rod automatic limiting device of the present invention;

[0029] Figure 9 Schematic structural view of the mounting seat in the swing rod automatic limiting device of the present invention;

[0030] Figure 10 Schematic structural view of the limiting plate in the swing rod automatic limiting device of the present invention;

[0031] Figure 11 Schematic structural view of the auxiliary plate in the swing rod automatic limiting device of the present invention;

[0032] Figure 12 Schematic structural view after the connection between the limiting plate body and the auxiliary plate in the swing rod automatic limiting device of the present invention;

[0033] Figure 13 Top view structural view of the locked state when the swing rod holds the arrow after the connection between the limiting plate body and the auxiliary plate in the swing rod automatic limiting device of the present invention;

[0034] Figure 14 Top view structural view of the locked state when the swing rod is swung open after the connection between the limiting plate body and the auxiliary plate in the swing rod automatic limiting device of the present invention. Detailed implementation manner

[0035] Such as Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 shown, an automatic swing rod limiting device of the present invention includes a limiting plate 01 and a limiting mechanism 02,

[0036] The limiting plate 01 is used to be connected to the main shaft 03 of the swing rod. The main shaft 03 drives the limiting plate 01 to swing. Before the rocket is launched, the swing rod is in the arrow-holding state. During the rocket launch stage, the swing rod is in the swung-open state. One side edge of the limiting plate 01 is the arrow-holding side, and the other side edge is the swung-open side.

[0037] The limiting mechanism 02 includes a limiting pin 21 and a limiting pin driving member. The limiting pin driving member is connected to a control unit, and the action of the limiting pin driving member is remotely controlled by the control unit. The limiting pin driving member is adapted to drive the limiting pin 21 to extend or retract. When the limiting pin 21 extends, it blocks the arrow-holding side edge or the swung-open side edge of the limiting plate 01, as Figure 2 、 Figure 3 shown. Specifically, the arrow-holding side edge of the limiting plate 01 is used for limiting the arrow-holding state of the swing rod before launch, and the swung-open side edge of the limiting plate 01 is used for limiting the state after the swing rod is swung open. As Figure 4 、 Figure 5 shown, before the swing rod is swung open, the limiting pin driving member drives the limiting pin 21 to be pulled up. After the swing rod is swung open in place, as Figure 6As shown, the limit pin driving member drives the limit pin 21 to drop, and the limit pin 21 blocks the swinging side edge of the limit plate 01 to limit the position of the swing rod; before the swing rod swings back, the limit pin driving member drives the limit pin 21 to be pulled up. After the swing rod swings back to the arrow-holding state, the limit pin driving member drives the limit pin 21 to drop, and the limit pin 21 blocks the arrow-holding side edge of the limit plate 01 to limit the arrow-holding position. In the automatic limit device for the swing rod of the present invention, since the limit mechanism 02 includes a limit pin 21 and a limit pin driving member, and the limit pin driving member is suitable for remote control, by remotely controlling the limit pin driving member to drive the limit pin 21 to extend or retract to limit the swing rod, therefore, in the rocket launch process, the automatic limit device for the swing rod of the present invention can achieve unattended operation, improve the safety of the product. At the same time, since the limit pin 21 blocks the arrow-holding side edge or the swinging side edge of the limit plate 01 when it extends, and the limit is realized by the contact between the edge of the limit plate 01 and the limit pin 21, the reliability is higher than that of the shaft-hole matching method, and the problem of locking jamming can be avoided.

[0038] Optionally, the limit pin driving member includes a hydraulic cylinder 22. The piston rod 221 of the hydraulic cylinder 22 is connected to the limit pin 21 to drive the limit pin 21 to move up and down. The hydraulic cylinder 22 adopts a main and standby circuit redundancy control and can still work normally when there is a leakage in a certain circuit. The limit pin driving member can also be an electric cylinder or other linear transmission structural members. Through the redundant design of the hydraulic circuit, the high reliability of the automatic limit device for the swing rod of the present invention is further ensured.

[0039] Optionally, as Figure 7 shown, a circumferential annular boss 211 is provided in the middle of the limit pin 21. The limit pin driving member further includes a transfer rod 27. One end of the transfer rod 27 is connected to the piston rod 221, and the other end is connected to the limit pin 21 through a connecting pin 271. An emergency pin hole is provided in the middle of the limit pin 21. Specifically, the transfer rod 27 is connected to the piston rod 221 through a pin. When the electric control or hydraulic system fails and the hydraulic cylinder 22 cannot act, the connecting pin 271 is taken out manually, the annular boss 211 is held and lifted. After the emergency pin hole in the middle of the limit pin 21 is aligned with the connecting pin hole on the transfer rod 27, the connecting pin 271 is reinstalled, and the emergency retraction of the limit pin 21 can be realized to ensure the normal progress of the launch process.

[0040] Optionally, the limit mechanism 02 further includes a limit device bracket 25. The limit pin driving member further includes a travel sensor 23 and a striker structure 24. The cylinder barrel 222 of the hydraulic cylinder 22 is connected to the top of the limit device bracket 25. The travel sensor 23 includes a contact 231, and the contact 231 is connected to the outer side wall of the limit device bracket 25. The striker structure 24 is connected to the piston rod 221 and moves synchronously with the piston rod 221. When the piston rod 221 moves up or down to the end position, the striker structure 24 collides with the contact 231, causing the hydraulic cylinder 22 to stop operating. The travel sensor 23 adopts a hot standby redundancy control to ensure the smooth triggering of the swing rod arrow-holding state and the swing rod opening state, and to ensure the high reliability of the swing rod automatic limit device of the present invention.

[0041] Optionally, as Figure 7 , Figure 8 shown, the striker structure 24 includes a first striker body and a second striker body. Both the first striker body and the second striker body are horizontally placed diamond prism structures. The diamond prism structure is a hollow part. The limit device bracket 25 includes a top plate, a left side plate, and a right side plate. An installation hole 253 is provided on the top plate. The hydraulic cylinder 22 is located on the outer wall of the top of the limit device bracket 25, and the cylinder barrel 222 of the hydraulic cylinder 22 is connected to the installation hole 253. The piston rod 221, the transfer rod 27, and the limit pin 21 are all located between the left side plate and the right side plate. First through holes 251 and second through holes extending along the length direction are respectively provided on the left side plate and the right side plate. When the piston rod 221 moves up and down, the first striker body and the second striker body respectively move up and down in the first through hole 251 and the second through hole. Third through holes 252 and fourth through holes are also respectively provided on the left side plate and the right side plate. The third through holes 252 and the fourth through holes are emergency operation windows. When the electric control or hydraulic system fails and the hydraulic cylinder 22 cannot operate, the connecting pin 271 is taken out through the third through hole 252 and the fourth through hole manually, and the annular boss 211 is held and lifted. There are two contacts 231. The first striker body and the second striker body respectively correspond to one contact 231. By providing the first striker body, the second striker body, and two contacts 231, the reliability of the swing rod automatic limit device of the present invention is further improved. Moreover, both the first striker body and the second striker body are horizontally placed diamond prism structures, and the diamond prism structure is a hollow part, so as to smoothly contact the contact 231 and avoid internal corrosion.

[0042] Optionally, as Figure 9As shown, the limit mechanism 02 further includes a mounting base 26. The mounting base 26 includes an upper flat plate 261, a lower flat plate 262, and a vertical plate 268. One side edges of the upper flat plate 261 and the lower flat plate 262 are both connected to the vertical plate 268. A reinforcing rib 267 is also connected between the upper flat plate 261 and the vertical plate 268. The upper flat plate 261 and the lower flat plate 262 are arranged at intervals and are parallel to each other. A first limit pin hole 263 and a second limit pin hole 264 are respectively arranged on the upper flat plate 261 and the lower flat plate 262. The mounting base 26 is located below the limit device bracket 25, and the bottom of the limit device bracket 25 is connected to the upper flat plate 261. When the position of the limit plate 01 is locked, when the limit pin driving member drives the limit pin 21 to drop, it passes through the first limit pin hole 263 and the second limit pin hole 264. The mounting base 26 is connected with a connecting flange 28 by bolts, and is welded to the fixed service tower or the umbilical tower wall through the connecting flange 28.

[0043] Optionally, the mounting base 26 further includes a guide sleeve 265. The guide sleeve 265 is connected to the upper flat plate 261. The guide sleeve 265 is located outside the first limit pin hole 263. The shapes and sizes of the guide sleeve 265 and the bottom of the limit pin 21 are matched. After the limit pin 21 passes through the guide sleeve 265, it extends into the first limit pin hole 263. The guide sleeve 265 is used for guiding and final limiting during the locking process of the limit pin 21. When the limit plate 01 is in the unlocked state, the limit pin 21 is still inside the guide sleeve 265, which can ensure smooth locking in the locked state.

[0044] Optionally, the bottom of the limit pin 21 is of a square structure, and grooves 212 are arranged on the four side surfaces of the bottom of the limit pin 21, which are used to reduce the contact area between the limit pin 21 and the guide sleeve 265, reduce friction, and at the same time are used to supplement grease to reduce friction.

[0045] Optionally, as Figure 10 The limit plate 01 includes a limit plate body 11, a connection end 13 connected to each other, and a reinforcing rib 14 connected between the limit plate body 11 and the connection end 13. The connection end 13 is used to connect to the main shaft 03 of the swing rod. The limit plate body 11 is a horizontally arranged flat plate. One side edge of the limit plate body 11 is the arrow-holding side, and the other side edge is the swinging-open side.

[0046] Optionally, as Figure 11 、 Figure 12 、 Figure 13 、 Figure 14As shown in the figure, the limit plate 01 further includes an attachment plate 12. The attachment plate 12 and the limit plate body 11 are in the same plane, and the attachment plate 12 is detachably connected to the limit plate body 11. Specifically, a first flange plate 15 is connected to the arrow-holding side edge or the spreading side edge of the limit plate body 11 and a groove 16 is provided. A second flange plate 121 and a pin shaft 122 are provided at the edge of the attachment plate 12. The pin shaft 122 is matched with the groove 16. The limit plate body 11 and the attachment plate 12 are connected through the first flange plate 15 and the second flange plate 121. The pin shaft 122 is placed in the groove 16 for the installation and positioning of the attachment plate 12 and the limit plate body 11, and at the same time, the structural stiffness is improved. The swing rod angle states are different among different rocket models. By providing a replaceable attachment plate 12, the interface requirements for the launches of different models of rockets can be adapted, and the state switching is convenient and fast.

[0047] The above embodiments are only used to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An automatic limiting device for a swing rod, characterized in that, It includes a limit plate (01) and a limit mechanism (02). The limit plate (01) is used to be connected to the main shaft (03) of the swing rod. The main shaft (03) drives the limit plate (01) to swing. Before the rocket is launched, the swing rod is in the arrow-holding state. During the rocket launch stage, the swing rod is in the swung-open state. One side of the limit plate (01) is the arrow-holding side, and the other side is the swung-open side. The limit mechanism (02) includes a limit pin (21) and a limit pin driving member. The limit pin driving member is suitable for remote control and is suitable for driving the limit pin (21) to extend or retract. When the limit pin (21) extends, it blocks the edge of the arrow-holding side or the swung-open side of the limit plate (01).

2. The swing rod automatic limit device according to claim 1, characterized in that, The limit pin driving member includes a hydraulic cylinder (22). The piston rod (221) of the hydraulic cylinder (22) is connected to the limit pin (21) to drive the limit pin (21) to move up and down.

3. The swing rod automatic limit device according to claim 2, wherein, A circumferential annular boss (211) is provided in the middle of the limit pin (21). The limit pin driving member further includes a transfer rod (27). One end of the transfer rod (27) is connected to the piston rod (221), and the other end is connected to the limit pin (21) through a connecting pin (271). An emergency pin hole is provided in the middle of the limit pin (21).

4. The swing rod automatic limiting device according to claim 3, characterized in that, The limit mechanism (02) further includes a limit device bracket (25). The limit pin driving member further includes a travel sensor (23) and a striker structure (24). The hydraulic cylinder (22) is connected to the top of the limit device bracket (25). The travel sensor (23) includes a contact head (231). The contact head (231) is connected to the outer wall of the limit device bracket (25). The striker structure (24) is connected to the piston rod (221) and moves synchronously with the piston rod (221). When the piston rod (221) moves up or down to the limit position, the striker structure (24) collides with the contact head (231) to stop the hydraulic cylinder (22) from operating.

5. The swing rod automatic limit device according to claim 4, characterized in that, The striker structure (24) includes a first impact body and a second impact body. The limit device bracket (25) includes a top plate, a left side plate, and a right side plate. The cylinder barrel (222) of the hydraulic cylinder (22) is connected to the outer wall of the top plate. The piston rod (221), the transfer rod (27), and the limit pin (21) are all located between the left side plate and the right side plate. First through holes (251) extending along the length direction are respectively provided on the left side plate and the right side plate. When the piston rod (221) moves up and down, the first impact body and the second impact body respectively move up and down in the first through hole (251) and the second through hole. Third through holes (252) and fourth through holes are respectively provided on the left side plate and the right side plate. There are two contact heads (231), and the two contact heads (231) respectively correspond to the first impact body and the second impact body.

6. The swing rod automatic limiting device according to claim 5, wherein, The limiting mechanism (02) further includes a mounting base (26). The mounting base (26) includes an upper flat plate (261), a lower flat plate (262), and a vertical plate (268). One side edges of the upper flat plate (261) and the lower flat plate (262) are both connected to the vertical plate (268). The upper flat plate (261) and the lower flat plate (262) are spaced apart and parallel to each other. A first limiting pin hole (263) and a second limiting pin hole (264) are respectively provided on the upper flat plate (261) and the lower flat plate (262). The mounting base (26) is located below the limiting device bracket (25), and the bottom of the limiting device bracket (25) is connected to the upper flat plate (261). When the position of the limiting plate (01) is locked, the limiting pin driving member drives the limiting pin (21) to pass through the first limiting pin hole (263) and the second limiting pin hole (264).

7. The swing rod automatic limit device according to claim 6, wherein The mounting base (26) further includes a guide sleeve (265). The guide sleeve (265) is connected to the upper flat plate (261), and the guide sleeve (265) is located around the first limiting pin hole (263). The limiting pin (21) passes through the guide sleeve (265) and then extends into the first limiting pin hole (263).

8. The swing rod automatic limit device according to claim 7, characterized in that, The bottom of the limiting pin (21) is of a square structure, and grooves (212) are provided on four side surfaces of the bottom of the limiting pin (21).

9. The swing rod automatic limiting device according to any one of claims 1-8, characterized in that, The limiting plate (01) includes a limiting plate body (11) and a connecting end that are connected to each other. The connecting end is used to connect to the main shaft (03) of the swing rod. The limiting plate body (11) is a horizontally arranged flat plate. One side edge of the limiting plate body (11) is the arrow-holding side, and the other side edge is the swing-open side.

10. The swing rod automatic limit device according to claim 9, characterized in that, The limiting plate (01) further includes an attaching plate (12). The attaching plate (12) and the limiting plate body (11) are in the same plane, and the attaching plate (12) is detachably connected to the limiting plate body (11).

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