CN111043906A

CN111043906A - Rocket foot supporting and pressing device for rocket and rocket launching platform

Info

Publication number: CN111043906A
Application number: CN201911087033.3A
Authority: CN
Inventors: 张瑜
Original assignee: Landspace Technology Co Ltd
Current assignee: Landspace Technology Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-04-21
Anticipated expiration: 2039-11-08
Also published as: CN111043906B

Abstract

The invention discloses a rocket foot supporting and pressing device for a rocket and a rocket launching platform, which comprise an actuator, a traction piece, a pressing piece, a fixing piece and a rocket foot supporting seat, wherein the actuator is arranged on the rocket foot supporting seat; the actuator is connected with the pressing piece through the pulling piece, the rocket leg supporting seat is used for supporting rocket legs and is positioned at one side close to the pressing piece, the pressing piece is rotatably arranged on the rocket leg supporting seat, and the actuator is used for pulling the pressing piece to rotate through the pulling piece so as to realize locking and separation of the rocket legs; draw an outside still to be equipped with the guiding orientation subassembly, the guiding orientation subassembly is used for at least drawing the piece quilt when actuator driving motion is right it leads to draw the piece, the one end of mounting is followed one side of guiding orientation subassembly with guiding orientation subassembly fixed connection, the other end is used for with the transmission stage body coupling, compares with prior art, has advantages such as reasonable in design, safe and reliable, the control of being convenient for.

Description

Rocket foot supporting and pressing device for rocket and rocket launching platform

Technical Field

The invention relates to the field of rockets, in particular to a rocket foot supporting and pressing device of a rocket and a rocket launching platform.

Background

With the rapid development of the aerospace industry, various technologies related to rockets also realize the rapid advance. When the carrier rocket adopts a 'three-horizontal' launching measuring mode, the rocket can shake in a vertical state under the action of wind load, great potential safety hazards are brought to the parking and filling of the rocket, and therefore rocket feet of the rocket need to be reliably supported and fixed. The traditional method is to install a windproof bolt or a windproof pressure plate at the rocket foot, so that the rocket must be manually dismantled on site when the propellant is filled in the rocket. Because the propellant is flammable and explosive liquid, great potential safety hazard is brought to the manual dismantling process.

Therefore, how to provide a rocket foot supporting and pressing device with reasonable design, safety, reliability and convenient control and a rocket launching platform is the problem to be solved at present.

Disclosure of Invention

The invention aims to provide a rocket foot supporting and pressing device and a rocket launching platform, which have the advantages of reasonable design, safety, reliability, convenience in control and the like.

In order to achieve the purpose, the invention provides the following technical scheme: a rocket leg supporting and pressing device for a rocket comprises an actuator, a traction piece, a pressing piece, a fixing piece and a rocket leg supporting seat; the actuator is connected with the pressing piece through the pulling piece, the rocket leg supporting seat is used for supporting rocket legs and is positioned at one side close to the pressing piece, the pressing piece is rotatably arranged on the rocket leg supporting seat, and the actuator is used for pulling the pressing piece to rotate through the pulling piece so as to realize locking and separation of the rocket legs; the outside of the traction piece is also provided with a guiding and positioning assembly, the guiding and positioning assembly is at least used for guiding the traction piece when the traction piece is driven by the actuator to move, one end of the fixing piece is fixedly connected with the guiding and positioning assembly from one side of the guiding and positioning assembly, and the other end of the fixing piece is used for being connected with the launching platform body.

Furthermore, one end of the pressing piece is provided with a fixing through hole, and the fixing through hole and the corresponding hole of the arrow foot supporting seat are fixedly connected with the arrow foot supporting seat through a first fixing pin shaft, so that the other end of the pressing piece can freely rotate around the first fixing pin shaft; one end of the pressing piece, close to the first fixed pin shaft, is connected with one end of a connecting rod through a second pin shaft, and the other end of the connecting rod is connected with the traction piece, so that the connecting rod drives the pressing piece to rotate around the first pin shaft when moving along with the traction piece, and locking and separation of rocket feet are achieved.

Furthermore, the traction piece comprises a transmission screw rod and a pull rod, the actuator is close to the launching platform body, one end of the pull rod is connected with one end of the actuator through the transmission screw rod, the other end of the pull rod is connected with the pressing piece through the connecting rod, the pull rod is in threaded connection with the transmission screw rod, and therefore when the actuator rotates, the pull rod is pushed and pulled through adjusting the degree of threaded fit with the pull rod.

Further, the pull rod be equipped with drive screw complex lower shrinkage pool, the lower notch is to keeping away from actuator one side is recessed, drive screw is equipped with the external screw thread, the lower notch is equipped with the internal thread, drive screw is close to the pull rod side sets up in the lower notch, and through it the external screw thread with the pull rod the female screw-thread fit.

Furthermore, the guiding and positioning assembly comprises a shell, an upper cover plate, a lower cover plate, a main supporting lead screw, a transmission turbine and a hand wheel; the shell has the passageway that runs through its both ends along the first direction, the upper cover plate with the apron is located down the shell is followed the upper portion and the lower part of first direction, and with shell fixed connection, drive turbine is located the inside of shell, and through the drive worm with be located the casing is outside hand wheel connection, main support lead screw is in drive turbine's inboard with transmission worm screw threaded connection, just main support lead screw is kept away from apron one end fixed connection down arrow foot supporting seat, through rotating the hand wheel drives drive worm drive turbine rotates, in order to adjust main support lead screw reaches arrow foot supporting seat is at the displacement of vertical direction.

Furthermore, a groove is formed in the radial inner side of the main support screw, an anti-rotation sliding block is arranged on one side, close to the arrow foot supporting seat, of the traction piece, one side of the anti-rotation sliding block is located in the groove, and the other side of the anti-rotation sliding block is fixed to the traction piece through a fixing bolt.

Furthermore, an opening channel is arranged in the main support screw rod, and the diameter of the opening channel is larger than that of the largest end of the traction piece, so that the traction piece can move up and down along the opening channel.

Further, an upper guide sleeve and a lower guide sleeve are respectively arranged between the upper cover plate and the main support screw rod and between the lower cover plate and the main support screw rod to guide the movement of the main support screw rod; and two ends of the main supporting lead screw are respectively and fixedly connected with the arrow foot supporting seat and the actuator after penetrating through the upper cover plate and the lower cover plate.

Further, outside the drive turbine, both ends of the drive turbine in the first direction are respectively in contact with sides of the upper cover plate and the lower cover plate opposite to each other through thrust roller bearings.

Further, the appearance that compresses tightly the piece is the cuboid and is close to the intermediate part of arrow foot supporting seat one side is for having to keeping away from the structure of recessed of arrow foot supporting seat, be equipped with the cooperation on the arrow foot supporting seat compress tightly the piece the recess of recessed structure.

The invention also provides a rocket launching platform which comprises the rocket foot supporting and pressing device.

Compared with the prior art, the invention has the beneficial effects that: a rocket foot supporting and pressing device for a rocket is composed of an actuator, a traction piece, a pressing piece, a fixing piece and a rocket foot supporting seat. The actuator is connected with the pressing piece through the pulling piece, the rocket foot supporting seat is used for supporting rocket feet and is positioned at one side close to the pressing piece, the pressing piece is rotatably arranged on the rocket foot supporting seat, the actuator is used for pulling the pressing piece to rotate through the pulling piece, and the pressing piece can be locked and separated from the rocket feet through controlling the actuator, so that the rocket feet can be prevented from being manually operated on site, and the actuator is safe and reliable; because the outside of the traction piece is also provided with a guiding and positioning assembly, the guiding and positioning assembly is at least used for guiding the traction piece when the traction piece is driven by the actuator to move, and because one end of the fixing piece is fixedly connected with the guiding and positioning assembly from one side of the guiding and positioning assembly and the other end of the fixing piece is used for being connected with the launching platform body, the fixing piece and the guiding and positioning assembly can be fixed firmly, the guiding and positioning assembly is prevented from inclining, the locking and the separation of rocket feet by the pressing piece are controlled, and the whole device has the advantages of reasonable design, safety, reliability, convenience in control and the like.

Drawings

FIG. 1 is a cross-sectional view of a rocket leg supporting and compressing device of the rocket of the present invention;

FIG. 2 is a perspective view of a rocket leg supporting and compressing device of the rocket of the present invention;

FIG. 3 is a schematic structural view of a rocket foot supporting and pressing device, a rocket foot, a rocket and a launching platform of the rocket;

FIG. 4 is a schematic structural diagram of the rocket foot supporting and pressing device of the rocket for pressing the rocket feet;

FIG. 5 is a schematic structural view of the rocket foot supporting and pressing device of the rocket for loosening the rocket feet;

FIG. 6 is a front view of the arrow foot support base of the present invention;

FIG. 7 is a perspective view of the pull rod of the present invention;

FIG. 8 is a block diagram of the main support screw of the present invention;

FIG. 9 is a left side view of the fastener of the present invention;

FIG. 10 is a top view of the fastener of the present invention;

fig. 11 is a perspective view of a compression member of the present invention.

Description of reference numerals:

1 supporting and pressing device and 2 rocket leg

3 rocket 4 launching platform

101 fastener 102 hold down

103 first fixed pin shaft 104 arrow foot supporting seat

105 connecting rod 106 pin

107 pull rod 108 main supporting screw rod

109 bolt 110 anti-rotation slider

111 fastening screw 112 upper guide sleeve

113 upper gland 114 drive turbine

115 thrust roller bearing 116 lower gland

117 lower guide sleeve 118 transmission screw rod

119 pressure-bearing copper pad 120 limiting flange

121 hydraulic motor 122 flat key

123 drive worm 124 gland bolt

125 hand wheel 126 concave hole

127 open channel 128 sink

129 slotted 130 connecting plate

131 bending fixing plate

Detailed Description

For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the invention, reference will now be made to the drawings and detailed description, wherein there are shown in the drawings and described in detail, various modifications of the embodiments described herein, and other embodiments of the invention will be apparent to those skilled in the art.

The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.

As used herein, the terms "first," "second," …, etc., do not denote any order or sequence, nor are they used to limit the present invention, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.

With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.

As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.

As used herein, "and/or" includes any and all combinations of the described items.

As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. Generally, the range of slight variations or errors modified by such terms may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.

Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.

The technical scheme provides: as shown in fig. 1, 2 and 3, a rocket foot supporting and pressing device for a rocket comprises an actuator, a pulling piece, a pressing piece 102, a fixing piece 101 and a rocket foot supporting seat 104. The actuator is connected with the pressing piece through a pulling piece, the rocket foot supporting seat 104 is used for supporting rocket feet and is located on one side close to the pressing piece 102, the pressing piece 102 is rotatably arranged on the rocket foot supporting seat 104, and the actuator is used for locking and disengaging the rocket feet 2 through the rotation of the pulling piece pulling pressing piece 102. The outside of the traction piece is also provided with a guiding and positioning assembly, the guiding and positioning assembly is at least used for guiding the traction piece when the traction piece is driven by the actuator to move, one end of the 101 fixing piece is fixedly connected with the guiding and positioning assembly from one side of the guiding and positioning assembly, and the other end of the fixing piece is used for being connected with the launching platform body 4.

Specifically, the method comprises the following steps: the rocket foot supporting and pressing device for the rocket consists of an actuator, a pulling piece, a pressing piece 102, a fixing piece 101 and a rocket foot supporting seat 104. The actuator is connected with the pressing piece through a pulling piece, the rocket foot supporting seat 104 is used for supporting rocket feet and is located on one side close to the pressing piece 102, the pressing piece 102 is rotatably arranged on the rocket foot supporting seat 104, and the actuator is used for pulling the pressing piece 102 to rotate through the pulling piece. Through the control to the direction of rotation of actuator, can realize compressing tightly the locking and breaking away from of piece 102 to rocket arrow foot 2, avoid the manual work to carry out field operation, safe and reliable. In addition, the outer part of the traction element is also provided with a guiding and positioning assembly, and the guiding and positioning assembly is at least used for guiding the traction element when the traction element is driven by the actuator to move. One end of the fixing part 101 is fixedly connected with the guiding and positioning assembly from one side of the guiding and positioning assembly, the other end of the fixing part is used for being connected with the launching platform body 4, the fixing part and the guiding and positioning assembly can be fixed firmly, the guiding and positioning assembly is prevented from inclining, the pressing part 102 is favorable for controlling the locking and the separation of the rocket foot 2, and the whole device has the advantages of reasonable design, safety, reliability, convenience in control and the like.

Specifically, as shown in fig. 1 and 2, one end of the pressing member 102 is provided with a fixing through hole, and the first fixing pin shaft 103 penetrates through the fixing through hole and is connected with the arrow foot supporting seat 104 through a matching hole at a position corresponding to the arrow foot supporting seat 104, so that one end of the pressing member 102 can freely rotate around the first fixing pin shaft 103, one end of the pressing member 102 close to the first fixing pin shaft is connected with one end of a connecting rod through a second pin shaft, and the other end of the connecting rod is connected with the pulling member, so that the connecting rod drives the pressing member to rotate around the first pin shaft 103 when moving along with the pulling member, thereby locking and releasing the rocket foot 2. The traction part comprises a pull rod 107 and a transmission screw 118, one end of the transmission screw 118 is connected with the actuator, and the other end of the transmission screw is in threaded connection with the pull rod 107. One end of the pressing member 102 close to the fixed pin 103 is connected to the connecting rod 105 through a pin 106 (i.e. the pressing member and the connecting rod are rotatably connected to each other), so that the connecting rod 105 can drive the pressing member 102 to rotate around the first fixed pin 103 under the movement of the pull rod 107. In addition, one side of the arrow foot supporting seat 104 close to the pressing piece 102 is provided with an opening channel 127 for preventing the pressing piece 102 from shaking. When the pressing piece 102 rotates close to the rocket leg supporting seat 104 along the fixed pin shaft 103, two sides of the pressing piece 102 are attached to the inner wall of the opening channel 127 to move, so that the pressing piece 102 is prevented from shaking due to an overlarge gap existing between the pressing piece 102 and the opening channel 127, the stability of the pressing piece 102 is improved, and the rocket leg supporting seat is favorable for fixing the rocket leg 2. In this embodiment, the first fixed pin 103 and the second fixed pin are identical in structure and size.

It is further noted that, as shown in fig. 1, 2 and 7, for convenience of control, the actuator includes a motor and the traction member includes a drive screw 118 and a pull rod 107. The engine comprises a hydraulic motor 121 (which can also be a pneumatic motor or other rotatable part), the hydraulic motor 121 is positioned at one side of the launching platform body 4, one end of the pull rod 107 is connected with one end of the hydraulic motor 121 through a transmission screw 118, and the other end is connected with the pressing piece 102 through a connecting rod 105. For the convenience of control, the pull rod 107 and the drive screw 118 are tightly connected and can rotate relative to each other to achieve the total length expansion, for example, the two are connected by screw threads. The follow-up rotation of the transmission screw rod 118 can be realized by remotely controlling the rotation of the hydraulic motor 121, the matching length of the transmission screw rod 118 and the pull rod 107 is changed, and further when the pull rod 107 and the transmission screw rod 118 are mutually shortened, the pressing mechanism can be tightly pressed on the rocket foot 2 when pulled, and when the pressing mechanism and the pull rod are relatively extended through thread rotation, the pressing mechanism can be reversely driven to move to be separated from the rocket foot 2.

It should be noted that, as shown in fig. 1 and 8, in the case that the main support screw 108 is disposed outside the transmission screw 118 and the pull rod 107, the transmission screw 118 contacts the main support screw 108 during rotation, and generates pressure. In order to reduce the pressure between the drive screw 118 and the main support screw 108, for example, a bearing copper pad 119 is added to a shoulder of the drive screw 118. On one hand, the pressure bearing copper pad 119 is similar to a spring and plays a role in reducing pressure, so that the transmission screw 118 and the main support screw 108 can be effectively protected; in addition, the pressure-bearing copper pad 119 can also reduce the friction force between the transmission screw 118 and the main support screw 108, so that the transmission screw 118 is prevented from being directly contacted with the main support screw 108, and the service lives of the transmission screw 118 and the main support screw 108 are prolonged. In this embodiment, the inner side of the bearing copper pad 119 and the outer side of the driving screw 118 can be tightly attached to each other, so as to prevent impurities from entering the driving screw 118 and entering the pull rod 107.

In addition, as shown in fig. 1 and 7, in the present embodiment, in order to facilitate the rotation of the pull rod 107 by the driving screw 118 and avoid the swing of the driving screw 118, for example, the pull rod 107 is provided with a concave hole 126 engaged with the driving screw 118. The lower concave hole 126 is concave towards the side far away from the engine, and the lower concave hole 126 can play a role in guiding and limiting, so that the pull rod 107 is tightly connected with the transmission screw 118 and is firmly fixed. For example, the transmission screw 118 is disposed in the lower concave hole 126 near the pull rod 107, an internal thread that matches the transmission screw 118 to rotate may be disposed on the surface of the lower concave hole 126, an external thread is disposed on the surface of the transmission screw 118, and the pull rod 107 is connected to the transmission screw 118 through a thread, so that the transmission screw 118 can push and pull the pull rod 107 by adjusting the degree of matching with the thread of the pull rod 107 when the actuator rotates. So as to further improve the stability of the transmission between the transmission screw 118 and the pull rod 107.

It should be noted that, as shown in fig. 1, in order to facilitate the connection between the drive screw 118 and the hydraulic motor 121, the drive screw 118 and the hydraulic motor 121 are connected through a limiting flange 120, and the limiting flange 120 is located between the drive screw 118 and the hydraulic motor 121. The limiting flange 120 bears the weight of the pull rod 107 and the transmission screw rod 118, and prevents the weight of the pull rod 107 and the transmission screw rod 118 from extruding the shaft end (the end connected with the transmission screw rod 118) of the hydraulic motor 121.

As shown in fig. 1 and 2, the guiding and positioning assembly includes a housing, an upper cover plate 113, a lower cover plate 116, a main support screw 108, a drive worm gear 114 and a handwheel 125. The housing has a passage extending through both ends thereof in a first direction (e.g., an axial direction of the pressing device supported in fig. 1), and an upper cover plate 113 and a lower cover plate 116 are provided at upper and lower portions of the housing in the first direction and are fixedly coupled to the housing. For example, the connection between the upper cover plate 113 and the lower cover plate 116 and the housing may be accomplished by the gland bolts 124, that is, the gland bolts 124 may penetrate through the upper cover plate and the lower cover plate from two sides of the upper cover plate and the lower cover plate respectively and then be screwed with the corresponding positions of the housing. The drive worm gear 114 is located inside the housing and is connected to a hand wheel 125 located outside the housing by a drive worm 123. The main support screw 108 is screwed with the transmission worm 123 at the inner side of the transmission turbine 114, and one end of the main support screw 108 away from the lower cover plate 116 is fixedly connected with the arrow foot supporting seat 104. The hand wheel 125 is rotated to drive the driving worm 123 and the driving worm wheel 114 to rotate, so as to integrally adjust the displacement of the main support screw 108 and the arrow foot support base 104 in the vertical direction.

It should be particularly noted that, as shown in fig. 1 and 8, in order to avoid the radial rotation phenomenon of the pull rod 107 during the rotation process, an anti-rotation slider 110 is disposed on one side of the pull rod 107 close to the arrow foot supporting seat 104, a slot 129 is disposed on the radial inner side of the main supporting lead screw 108 (for example, the slot 129 may be a slot along the axial direction of the main supporting lead screw), one end of the anti-rotation slider 110 is located in the slot 129, and the other end of the anti-rotation slider is fixed on the pull rod 107 through a fixing bolt, so that the relative rotation between the pull rod 107 and the main supporting lead screw 108 can be effectively avoided, and the stability of arrow foot. To facilitate disassembly and maintenance, for example, the arrow foot support base 104 is bolted 109 to the main support screw 108.

It is worth noting that in order to facilitate the movement of the pulling member and limit the movement of the pulling rod and the transmission screw rod, an opening channel is arranged inside the main support screw rod 108, and the opening channel plays a guiding role, so that the pulling member can move in the opening channel conveniently. For example, for the pulling member to move more easily, the diameter of the open channel is larger than the diameter of the largest end of the pulling member so that the pulling member can move up and down along the open channel.

In addition, to ensure that the main support screw 108 moves in the first direction, and to avoid tilting of the main support screw 108, for example, an upper guide sleeve 112 and a lower guide sleeve 117 are provided between the upper cover plate 113 and the main support screw 108, and between the lower cover plate 116 and the main support screw 108, respectively, to guide the movement of the main support screw 108. The two ends of the main support screw 108 are respectively and fixedly connected with the arrow foot support base 104 and the hydraulic motor 121 after penetrating through the upper cover plate 113 and the lower cover plate 116. Furthermore, the upper guide bush 112 and the lower guide bush 117 are fixed outside the main support screw 108 by a fastening screw 111.

In the present embodiment, as shown in fig. 2, 9 and 10, the fixing member 101 includes a connection plate 130 and a curved fixing plate 131, and one end of the curved fixing plate 131 is connected to the connection plate 130 and the other end is fixedly connected to the housing. The connecting plate 130 is rectangular and is provided with fixing through holes around, and the connecting plate 130 is screwed with corresponding holes of the rocket launching platform body 4 after passing through the surface of the connecting plate 130 through bolts. The curved fixing plate 131 is provided with a semicircular structure matched with the housing at one end matched with the housing, and the surface of the housing is tightly attached to the semicircular structure, and the housing and the semicircular structure can be connected by welding or screw connection. The semi-circular arc structure of the bending fixing plate 131 can be matched with the bending fixing plate along the axial direction of the shell, so that the contact area between the bending fixing plate 131 and the shell is increased, and the fixing strength of the rocket foot supporting and pressing device on the rocket launching platform is improved. It should be noted that, outside the power turbine 114, both ends of the power turbine 114 in the first direction are respectively in contact with the sides of the upper cover plate 113 and the lower cover plate 116 that are opposite to each other through the thrust roller bearings 115. The thrust roller bearing 115 is used for bearing the pressure and the pulling force of the main support screw rod 108, and particularly, the minimum bearing pressure of a single bearing is more than or equal to 1000 KN.

In particular, as shown in fig. 2 and 11, in the present embodiment, in order to facilitate the movement of the pressing piece 102, the pressing piece 102 is shaped like a rectangular parallelepiped, and the middle portion of the pressing piece on the side close to the arrow foot supporting seat 104 has a concave structure, and the arrow foot supporting seat is provided with a groove matching with the concave structure of the pressing piece, so that when the pressing piece 102 presses the rocket foot, the two sides of the pressing piece 102 are located in the grooves of the arrow foot supporting seat when the pressing piece 102 approaches the arrow foot supporting seat 104, thereby reducing the shaking of the pressing piece 102. In particular, in order to further reduce the shaking of the pressing piece 102, the matching size of the groove of the rocket leg supporting seat and the concave structure of the pressing piece can be further designed, so that the two sides of the pressing piece 102 are attached to the inner wall of the groove to move, and the gap between the two sides of the pressing piece 102 and the groove is reduced, so that the pressing piece 102 is prevented from shaking left and right in the direction of the inner wall of the groove in the process of pressing and loosening the rocket leg.

It should be further noted that, in the present embodiment, for convenience of connection, for example, the drive screw 118 is connected to the hydraulic motor 121 through a flat key 122. Explained further, the hydraulic motor 121 may convert hydraulic pressure energy provided by the hydraulic pump into mechanical energy of its output shaft. In this embodiment, the forward rotation and the reverse rotation of the hydraulic motor can be realized through the control valve, the control valve is connected by the control button through the electrical lead, and the forward rotation, the forward rotation and the remote control of the motor can be realized by adopting the prior art, which is not described herein.

In addition, as shown in fig. 1, 3, and 6, in order to facilitate connection of the rocket foot 2 to the rocket foot support base 104, a sinking portion 128 is provided on the rocket foot support base 104. The sinking portion 128 is arranged on one side far away from the pull rod 107, so that the rocket foot 2 abuts against the rocket foot supporting seat 104, one end of the rocket foot 2 is located in the sinking portion 128, the rocket foot 2 is prevented from moving in a displacement mode, and the rocket foot 2 is further guaranteed to be fixed firmly. For example, the inner side surface of the depressed portion 128 and the contact portion of the rocket foot 2 may be completely fitted to each other, thereby further improving the stability of the rocket.

It should be noted that the main support screw 108 has a passage through its two ends, the drive screw 118 is substantially flush with one end of the main support screw 108 on the side close to the hydraulic motor, and the tie rod 107 protrudes from the other end of the main support screw 118 on the side away from the hydraulic motor. The actuator rod 107 and the drive screw 118 are each configured to move up and down within the internal channel of the main support screw 108 to control the opening and closing of the hold-down mechanism.

The specific embodiment is as follows:

as shown in fig. 3, two ends of the rocket foot supporting and pressing device 1 are respectively connected with a rocket foot 2 and a launching platform body 4, one end of the rocket foot 2 is located at the lower part of the rocket 3, and the rocket foot 2 is fixed through the supporting and pressing device 1, so that the rocket 3 is guaranteed to be fixed, and the rocket 3 is prevented from inclining.

1. In the preparation stage, as shown in fig. 1, the handwheel 125 is rotated counterclockwise, the main support screw 108 is driven to descend to the lowest position through the transmission worm 123, then the hydraulic motor 121 is controlled to rotate clockwise, the pull rod 107 is driven to extend through the transmission screw 118, and the pressing piece 102 is driven to rotate around the fixed pin shaft 103 through the connecting rod 105, so that about 45 degrees is opened, and the falling space of the rocket leg 2 is left.

2. Jacking support, as shown in fig. 4, after the rocket is erected from a horizontal state to a vertical state, due to the position deviation between the launching pad and the erecting device, the rocket leg 2 of the rocket has a certain height difference with the supporting device, and the heights of the four rocket legs also have a certain deviation, so that the handwheel 125 is adjusted clockwise, the main support screw 108 drives the rocket support base 104 to slowly rise, and after the upper plane of the rocket leg support base 104 is tightly attached to the rocket leg 2, the handwheel 125 stops rotating. At this time, the main support screw rod 108 is self-locked by the screw thread and is kept at the support position. In a similar way, other rocket foot supporting devices are adjusted to enable the respective rocket foot supporting seats to be in contact support with the corresponding rocket feet, and the rocket feet are used for bearing the weight of the rocket together.

3. And (3) compressing the rocket leg, as shown in fig. 5, controlling the hydraulic motor 121 to rotate anticlockwise through a remote or local control valve, driving the transmission screw rod 118 to rotate, retracting the pull rod 107, driving the connecting rod 105 to enable the compressing piece 102 to rotate anticlockwise around the fixed pin shaft 103, and compressing the rocket leg 2. The transmission screw rod 118 and the pull rod 107 are in threaded transmission, so that the compression self-locking can be realized. The looseness caused by other factors such as vibration and the like can be avoided, and the reliability of the compression piece 102 on the arrow foot 2 is ensured.

4. And (3) loosening the rocket leg, as shown in fig. 4, controlling the hydraulic motor 121 to rotate clockwise through the remote control valve 30min before the rocket is launched, driving the transmission screw rod 118 to rotate, extending the pull rod 107, driving the connecting rod 105 to enable the pressing piece 102 to rotate clockwise 45 degrees around the fixed pin shaft 103, and loosening the rocket leg 2.

It should be noted that the present device only describes that the transmission screw 118 is driven by the rotation of the hydraulic motor 121 through a series of links to press or open the pressing member, and for the driving device using an air motor, an electric motor, etc., it is within the scope of this patent protection.

The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.

Claims

1. The utility model provides a rocket foot supports closing device which characterized in that: the device comprises an actuator, a traction piece, a pressing piece, a fixing piece and a rocket leg supporting seat; the actuator is connected with the pressing piece through the pulling piece, the rocket leg supporting seat is used for supporting rocket legs and is positioned at one side close to the pressing piece, the pressing piece is rotatably arranged on the rocket leg supporting seat, and the actuator is used for pulling the pressing piece to rotate through the pulling piece so as to realize locking and separation of the rocket legs; the outside of the traction piece is also provided with a guiding and positioning assembly, the guiding and positioning assembly is at least used for guiding the traction piece when the traction piece is driven by the actuator to move, one end of the fixing piece is fixedly connected with the guiding and positioning assembly from one side of the guiding and positioning assembly, and the other end of the fixing piece is used for being connected with the launching platform body.

2. A rocket foot supporting and pressing device according to claim 1, characterized in that: one end of the pressing piece is provided with a fixing through hole, and the fixing through hole and the corresponding hole of the arrow foot supporting seat are fixedly connected with the arrow foot supporting seat through a first fixing pin shaft, so that the other end of the pressing piece can freely rotate around the first fixing pin shaft; one end of the pressing piece, close to the first fixed pin shaft, is connected with one end of a connecting rod through a second pin shaft, and the other end of the connecting rod is connected with the traction piece, so that the connecting rod drives the pressing piece to rotate around the first pin shaft when moving along with the traction piece, and locking and separation of rocket feet are achieved.

3. A rocket foot supporting and pressing device according to claim 1, characterized in that: the drawing part comprises a transmission lead screw and a pull rod, the actuator is close to the launching table body, one end of the pull rod is connected with one end of the actuator through the transmission lead screw, the other end of the pull rod is connected with the pressing part through the connecting rod, and the pull rod is in threaded connection with the transmission lead screw, so that the transmission lead screw is used for pushing and pulling the pull rod by adjusting the degree of threaded fit with the pull rod when the actuator rotates.

4. A rocket foot supporting and pressing device according to claim 3, characterized in that: the pull rod be equipped with drive screw complex lower shrinkage pool, the bottom outlet is to keeping away from actuator one side is recessed, drive screw is equipped with the external screw thread, the bottom outlet is equipped with the internal thread, drive screw is close to the pull rod side sets up in the bottom outlet, and through it the external screw thread with the pull rod interior screw-thread fit.

5. A rocket foot supporting and pressing device according to claim 1, characterized in that: the guide positioning assembly comprises a shell, an upper cover plate, a lower cover plate, a main support lead screw, a transmission turbine and a hand wheel; the shell is provided with a channel penetrating through two ends of the shell along a first direction, the upper cover plate and the lower cover plate are positioned at the upper part and the lower part of the shell along the first direction and are fixedly connected with the shell, and the transmission worm wheel is positioned in the shell and is connected with the hand wheel positioned outside the shell through a transmission worm; the main support lead screw is in the inboard of drive turbine with drive worm screw threaded connection, just the main support lead screw is kept away from apron one end fixed connection down the arrow foot supporting seat, through rotating the hand wheel drives the drive worm, the drive turbine rotates to adjust the main support lead screw reaches the displacement of arrow foot supporting seat in the vertical direction.

6. A rocket foot supporting and pressing device according to claim 5, characterized in that: the radial inner side of the main supporting screw rod is provided with a groove, one side of the traction piece, which is close to the arrow foot supporting seat, is provided with an anti-rotation sliding block, one side of the anti-rotation sliding block is positioned in the groove, and the other side of the anti-rotation sliding block is fixed on the traction piece through a fixing bolt.

7. A rocket foot supporting and pressing device according to claim 5, characterized in that: an opening channel is arranged in the main support screw rod, and the diameter of the opening channel is larger than that of the largest end of the traction piece, so that the traction piece can move up and down along the opening channel.

8. A rocket foot supporting and pressing device according to claim 5, characterized in that: an upper guide sleeve and a lower guide sleeve are respectively arranged between the upper cover plate and the main support screw rod and between the lower cover plate and the main support screw rod so as to guide the movement of the main support screw rod; and two ends of the main supporting lead screw are respectively and fixedly connected with the arrow foot supporting seat and the actuator after penetrating through the upper cover plate and the lower cover plate.

9. A rocket foot supporting and pressing device according to claim 5, characterized in that: outside the drive turbine, both ends of the drive turbine in the first direction are respectively in contact with sides of the upper cover plate and the lower cover plate opposite to each other through thrust roller bearings.

10. A rocket foot supporting and pressing device according to claim 1, characterized in that: the appearance that compresses tightly the piece is the cuboid and is close to the intermediate part of arrow foot supporting seat one side is for having recessed structure, be equipped with the cooperation on the arrow foot supporting seat compress tightly the piece the recess of recessed structure.

11. A rocket launch platform, characterized by: comprising a rocket foot supporting and pressing device according to any one of claims 1 to 10.