CN211783089U

CN211783089U - Rocket foot supporting and pressing device for rocket

Info

Publication number: CN211783089U
Application number: CN201921920353.8U
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: 2020-10-27
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a rocket foot supporting and pressing device, which comprises a locking structure used for fixing a rocket foot and a fixing structure used for fixing the locking structure on a launching platform body; one end of the fixing structure is fixedly connected with the locking structure from one side of the locking structure, and the other end of the fixing structure is used for being connected with the launching platform body; the locking structure further comprises a transmission mechanism and a pressing mechanism, one end of the pressing mechanism is connected with the transmission mechanism, the other end of the pressing mechanism is lifted through the transmission mechanism, pressing and loosening of rocket feet are achieved, and compared with the prior art, the device has the advantages of being reasonable in design, safe, reliable, convenient to control and the like.

Description

Rocket foot supporting and pressing device for rocket

Technical Field

The utility model relates to a rocket field, in particular to rocket foot supports closing device.

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 which is reasonable in design, safe, reliable and convenient to control is the problem to be solved at present.

Disclosure of Invention

The utility model aims at providing a rocket foot supports closing device has reasonable in design, safe and reliable, advantages such as the control of being convenient for.

In order to achieve the above object, the utility model provides a following technical scheme: a rocket foot supporting and pressing device for a rocket comprises a locking structure for fixing a rocket foot and a fixing structure for fixing the locking structure on a launching platform body; one end of the fixing structure is fixedly connected with the locking structure from one side of the locking structure, and the other end of the fixing structure is used for being connected with the launching platform body; the locking structure further comprises a transmission mechanism and a pressing mechanism, one end of the pressing mechanism is connected with the transmission mechanism, and the other end of the pressing mechanism presses and releases the rocket feet through the lifting of the transmission mechanism.

Preferably, the transmission mechanism comprises an engine, a transmission screw rod and a pull rod, the engine is arranged close to the launching platform body, one end of the pull rod is connected with one end of the engine through the transmission screw rod, the other end of the pull rod is connected with the pressing mechanism through a connecting rod, and the pull rod is connected with the transmission screw rod through threads.

Preferably, a bearing copper pad is arranged on a shaft shoulder of the transmission screw rod.

Preferably, the pull rod be equipped with drive screw complex shrinkage pool down, the shrinkage pool is to keeping away from engine one side is recessed, drive screw is equipped with the external screw thread, the shrinkage pool is equipped with the internal thread, drive screw is close to the pull rod side sets up in the shrinkage pool.

Preferably, the engine is a hydraulic motor, the transmission screw is connected with the hydraulic motor through a limiting flange, and the limiting flange is located between the transmission screw and the hydraulic motor.

Preferably, the pressing mechanism comprises a pressing plate and an arrow foot supporting seat; the rocket foot supporting seat is characterized in that one end of the compression plate is provided with a fixed through hole, the fixed through hole and the corresponding hole of the rocket foot supporting seat are fixedly connected with the rocket foot supporting seat through a fixed pin shaft, the other end of the compression plate can freely rotate along the fixed pin shaft, one end of the compression plate close to the fixed pin shaft is connected with the connecting rod through a pin shaft, and the connecting rod drives the compression plate to rotate when moving along with the pull rod and the transmission screw, so that the rocket foot is locked and separated.

Preferably, the locking structure further comprises an adjusting mechanism, and the adjusting mechanism 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 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 shell is outside hand wheel connection, main support lead screw is in drive turbine's inboard with drive 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.

Preferably, 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 screw rod are respectively and fixedly connected with the arrow foot supporting seat and the engine after penetrating through the upper cover plate and the lower cover plate.

Preferably, 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 pull rod, 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 pull rod through a fixing bolt.

Preferably, both ends of the power transmission 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, outside the power transmission turbine.

Compared with the prior art, the beneficial effects of the utility model are that: a rocket foot supporting and pressing device for a rocket consists of a locking structure for fixing rocket feet and a fixing structure for fixing the locking structure on a launching platform body; one end of the fixing structure is fixedly connected with the locking structure from one side of the locking structure, and the other end of the fixing structure is used for being connected with the launching platform body, so that the fixing structure and the locking structure are firmly fixed, and the locking structure is prevented from moving; because the locking structure also comprises a transmission mechanism and a pressing mechanism, one end of the pressing mechanism is connected with the transmission mechanism, and the other end of the pressing mechanism is lifted up and down through the transmission mechanism, the rocket foot can be pressed and loosened by controlling the lifting of the transmission mechanism, so that the manual field operation is avoided.

Drawings

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

FIG. 2 is a perspective view of the rocket leg supporting and pressing device of the utility model;

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

FIG. 4 is a schematic structural view of the rocket foot supporting and pressing device of the utility model when pressing the rocket foot;

FIG. 5 is a schematic structural view of the rocket foot supporting and pressing device of the utility model when loosening the rocket foot;

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

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

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

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

fig. 10 is a top view of the fixing structure of the present invention.

Description of reference numerals:

1 supporting and pressing device and 2 rocket leg

3 rocket 4 launching platform

101 fixed structure 102 pressure strip

103 fixed pin shaft 104 arrow foot supporting seat

105 connecting rod 106 pin

107 pull rod 108 main supporting lead screw

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 drive screw

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

To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the spirit of the present invention will be described in detail with reference to the accompanying drawings, and any person skilled in the art can change or modify the techniques taught by the present invention without departing from the spirit and scope of the present invention after understanding the embodiments of the present invention.

The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but 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 sequential importance, nor are they used to limit the 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 1 comprises a locking structure for fixing a rocket foot 2 and a fixing structure 101 for fixing the locking structure to a launching platform body 4. One end of the fixing structure 101 is fixedly connected with the locking structure from one side of the locking structure, and the other end of the fixing structure is used for being connected with the launching platform body 4. The locking structure further comprises a transmission mechanism and a pressing mechanism, one end of the pressing mechanism is connected with the transmission mechanism, and the other end of the pressing mechanism is lifted through the transmission mechanism to press and release the rocket leg 2.

Specifically, the method comprises the following steps: the rocket foot supporting and pressing device 1 consists of a locking structure for fixing the rocket foot 2 and a fixing structure 101 for fixing the locking structure on the launching platform body 4. Because one end of the fixed structure 101 is fixedly connected with the locking structure from one side of the locking structure, and the other end of the fixed structure 101 is used for being connected with the launching platform body 4, the fixed structure and the locking structure are fixed firmly, and displacement movement is avoided when the rocket feet 2 of the rocket are locked by the locking structure. The locking structure further comprises a transmission mechanism and a pressing mechanism, one end of the pressing mechanism is connected with the transmission mechanism, the other end of the pressing mechanism goes up and down through the transmission mechanism, the rocket foot 2 can be pressed and loosened through controlling the lifting of the transmission mechanism, manual field operation is avoided, and the whole device has the advantages of being reasonable in design, safe, reliable, convenient to control and the like.

It is further noted that, as shown in fig. 1, 2 and 7, for the sake of convenience of control, the transmission mechanism includes an engine, a drive screw 118 and a pull rod 107. The engine comprises a hydraulic motor 121 (which may also be a pneumatic motor or other rotatable component), the hydraulic motor 121 is located at one side of the launching table 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 mechanism through a connecting rod 105. The follow-up rotation of the transmission screw can be realized through the rotation of the remote control hydraulic motor, and then the pull rod 107 can be driven to rotate, so that the pull rod 107 can press the rocket foot 2 when the pressing mechanism is pulled, and the pull rod is separated from the rocket foot 2 when the pressing mechanism is driven to move reversely.

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, for precise control, the hydraulic motor forward and reverse rotation is achieved by control valves connected by control buttons through electrical leads.

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 drive screw 118 and the pull rod 107, the drive 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, has a pressure reduction effect, and can effectively protect the transmission screw 118 and the main support screw 108; 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 driving screw 118 is disposed in the lower concave hole 126 near the pull rod 107, an internal thread matching the driving screw 118 to rotate may be further disposed on the surface of the lower concave hole 126, an external thread is disposed on the surface of the driving screw 118, and the pull rod 107 is connected to the driving screw 118 through a thread. 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 stop flange 120 bears the weight of the tie rod 107 and the drive screw 118, preventing this weight from squeezing the shaft end of the hydraulic motor 121 (the end connected to the drive screw 118).

Specifically, as shown in fig. 1 and 2, the pressing mechanism includes a pressing plate 102 and an arrow foot support base 104. The fixing through holes are formed in one end of the pressing plate 102, and the fixing pin shaft 103 penetrates through the fixing through holes to be connected with the arrow foot supporting seat 104 through the matching holes in the corresponding positions of the arrow foot supporting seat 104, so that one end of the pressing plate 102 can freely rotate along the fixing pin shaft 103, and rocket feet can be opened and pressed. One end of the pressing plate 102 close to the fixed pin 103 is connected to the connecting rod 105 through a pin 106 (i.e. the pressing plate and the connecting rod are rotatably connected to each other), so that the connecting rod 105 can drive the pressing plate 102 to rotate around the fixed pin 103 under the movement of the pull rod 107. In addition, an open channel 127 for preventing the pressing plate 102 from shaking is arranged on one side of the arrow foot supporting seat 104 close to the pressing plate 102. When the pressing plate 102 rotates close to the rocket leg supporting seat 104 along the fixed pin shaft 103, the two sides of the pressing plate 102 are attached to the inner wall of the opening channel 127 to move, so that the pressing plate 102 is prevented from shaking due to the fact that an overlarge gap exists between the pressing plate 102 and the opening channel 127, the stability of the pressing plate 102 is improved, and further the rocket leg 2 can be fixed.

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.

As shown in fig. 1 and 2, the locking mechanism further comprises an adjusting mechanism, and the adjusting mechanism comprises a housing, an upper cover plate 113, a lower cover plate 116, a main support screw 108, a transmission worm gear 114 and a hand wheel 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 adjust the displacement of the main supporting lead screw 108 and the arrow foot supporting seat 104 in the vertical direction.

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 pull rod 107 protrudes from the other end of the main support screw 118 on the side away from the hydraulic motor. The pull rod 107 and the drive screw 118 in the drive mechanism 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.

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.

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 screw 108, one end of the anti-rotation slider 110 is located in the slot 129, and the other end of the anti-rotation slider 110 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 screw 108 can be effectively avoided, and the stability of arrow foot height adjustment is improved. To facilitate disassembly and maintenance, for example, the arrow foot support base 104 is bolted 109 to the main support screw 108.

In the present embodiment, as shown in fig. 2, 9 and 10, the fixing structure 101 includes a connecting plate 130 and a curved fixing plate 131, and one end of the curved fixing plate 131 is connected to the connecting 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 are welded together. 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 108, and particularly, the minimum bearing pressure of a single bearing is more than or equal to 1000 KN.

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.

The specific embodiment is as follows:

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 by the transmission worm 123, then the hydraulic motor 121 is controlled to rotate clockwise, the pull rod 107 is driven to extend by the transmission screw 118, and the pressing plate 102 is driven to rotate around the fixed pin shaft 103 by the connecting rod 105, so as to open about 45 degrees and make the falling space of the rocket leg 2 clear.

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 the moment, the main support lead screw 108 is self-locked through threads and is kept at a 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 feet, as shown in fig. 5, controlling the hydraulic motor 121 to rotate counterclockwise through a remote or local control valve, driving the transmission lead screw 118 to rotate, retracting the pull rod 107, driving the connecting rod 105 to rotate the compression plate 102 counterclockwise around the fixed pin shaft 103, and compressing the rocket feet 2. The transmission screw 118 and the pull rod 107 are in threaded transmission, so that the compression self-locking can be realized. The rocket foot 2 can not be loosened due to other factors such as vibration and the like, and the reliability of the compression plate 102 on the rocket 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 rotate the pressing plate 102 clockwise by 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 rotation of the hydraulic motor 121 drives the driving screw 118 to pass through a series of links to press or open the pressing plate, and it is within the scope of the patent protection for the driving device using the air motor, the electric motor, etc.

The foregoing is only 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 principles 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 rocket launching platform comprises a locking structure used for fixing rocket feet and a fixing structure used for fixing the locking structure on the launching platform body; one end of the fixing structure is fixedly connected with the locking structure from one side of the locking structure, and the other end of the fixing structure is used for being connected with the launching platform body; the locking structure further comprises a transmission mechanism and a pressing mechanism, one end of the pressing mechanism is connected with the transmission mechanism, and the other end of the pressing mechanism presses and releases the rocket feet through the lifting of the transmission mechanism.

2. A rocket foot supporting and pressing device according to claim 1, characterized in that: the transmission mechanism comprises an engine, a transmission lead screw and a pull rod, the engine is arranged close to the launching table body, one end of the pull rod is connected with one end of the engine through the transmission lead screw, the other end of the pull rod is connected with the pressing mechanism through a connecting rod, and the pull rod is connected with the transmission lead screw through threads.

3. A rocket foot supporting and pressing device according to claim 2, characterized in that: and a bearing copper pad is arranged on a shaft shoulder of the transmission lead screw.

4. A rocket foot supporting and pressing device according to claim 2, characterized in that: the pull rod be equipped with drive screw complex shrinkage pool down, the bottom outlet is to keeping away from engine 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.

5. A rocket foot supporting and pressing device according to claim 2, characterized in that: the engine is a hydraulic motor, the transmission lead screw is connected with the hydraulic motor through a limiting flange, and the limiting flange is located between the transmission lead screw and the hydraulic motor.

6. A rocket foot supporting and pressing device according to claim 2, characterized in that: the pressing mechanism comprises a pressing plate and an arrow foot supporting seat; the rocket foot supporting seat is characterized in that one end of the compression plate is provided with a fixed through hole, the fixed through hole and the corresponding hole of the rocket foot supporting seat are fixedly connected with the rocket foot supporting seat through a fixed pin shaft, the other end of the compression plate can freely rotate along the fixed pin shaft, one end of the compression plate close to the fixed pin shaft is connected with the connecting rod through a pin shaft, and the connecting rod drives the compression plate to rotate when moving along with the pull rod and the transmission screw, so that the rocket foot is locked and separated.

7. A rocket foot supporting and pressing device according to claim 6, characterized in that: the locking structure further comprises an adjusting mechanism, and the adjusting mechanism 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 shell is outside hand wheel connection, main support lead screw is in drive turbine's inboard with drive 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.

8. A rocket foot supporting and pressing device according to claim 7, 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 screw rod are respectively and fixedly connected with the arrow foot supporting seat and the engine after penetrating through the upper cover plate and the lower cover plate.

9. A rocket foot supporting and pressing device according to claim 7, characterized in that: the radial inner side of the main supporting screw rod is provided with a groove, one side of the pull rod, 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 pull rod through a fixing bolt.

10. A rocket foot supporting and pressing device according to claim 7, 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.