CN217686866U

CN217686866U - Rocket connector pulling-out device

Info

Publication number: CN217686866U
Application number: CN202221176206.6U
Authority: CN
Inventors: 辛健; 赵立乔; 张亚民; 武凯日; 张信波; 韩宏茵; 赵艳龙
Original assignee: Landspace Technology Co Ltd
Current assignee: Landspace Technology Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-10-28
Anticipated expiration: 2032-05-10

Abstract

The utility model provides a rocket connector pulls off device. The connector pull-off device at least comprises: installing a foundation, an active pull-out mechanism and a passive pull-out mechanism; the bottom of the passive pull-out mechanism is arranged at the top of the mounting base, and the active pull-out mechanism is arranged on one side of the passive pull-out mechanism; the active pull-out mechanism and the passive pull-out mechanism are arranged in a redundant manner and are used for unlocking the connector and the arrow upper interface by pulling the connector. The problem of delay or postponement of rocket launching caused by the fault of the connector falling-off equipment is thoroughly solved, and meanwhile, the reliability of pulling-off unlocking of the connector is improved.

Description

Rocket connector pulling-out device

Technical Field

The utility model relates to a space launch vehicle technical field, especially a rocket connector pull-off device.

Background

The connector is used for connecting ground pipelines such as filling, air supply, power supply and ventilation and the like with an upper interface of the rocket body, and is used for completing functions of propellant filling, discharging, exhausting, air supply, power supply and the like of the rocket. After the connector completes the functions, the connector can reliably fall off from the rocket body, and the falling fault directly causes the launching of the rocket to be stopped, so that the connector has higher requirements on the falling reliability of the gas-liquid connector.

The connector pull-off device is generally arranged on a launcher, and for new rocket types, the existing launcher is generally required to be used for launching. Limited by the launch cradle structure and the mounting location of the pull-off device, the mounting location of the pull-off device may be undesirably spaced from and angled relative to the connector, typically at a certain spatial distance and angle.

Furthermore, a plurality of rocket ports are usually provided on the rocket, and each port is connected with a corresponding connector. After the rocket takes off, a plurality of connectors need to be simultaneously separated, and a plurality of connector separation devices are often arranged on the launcher.

Therefore, it is highly desirable to design a connector releasing device that can not only adapt to the installation position of the existing launcher, but also satisfy the requirement of mutual noninterference in the pulling-out process of each connector.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem among the correlation technique, the utility model provides a rocket connector draws takes off device collects initiative and draws to take off the function and draw passively and take off the function in an organic whole, and initiative is drawn to take off the mechanism and is drawn passively and take off the mechanism and each other for redundant setting, each other is the guarantee. Or the utility model discloses a draw and take off device also can be applied to two connectors simultaneously, realized that one draws and takes off the demand that drops that the device can satisfy two connectors simultaneously, has also optimized the overall arrangement of connector shedder at the launching cradle simultaneously.

The utility model provides a pair of rocket connector pulls off device includes at least: installing a foundation, an active pull-out mechanism and a passive pull-out mechanism; the bottom of the passive pull-out mechanism is arranged at the top of the mounting base, and the active pull-out mechanism is arranged on one side of the passive pull-out mechanism; the active pull-off mechanism and the passive pull-off mechanism are arranged in a redundant manner and are used for unlocking the connector and the arrow upper interface by pulling the connector.

In one embodiment, the passive pull-off mechanism is arranged on the mounting base through a mounting frame; the installation frame set up in installation basis top, passive pull-off mechanism set up in the installation frame, the initiative pull-off mechanism set up in the installation frame back.

In one embodiment, the active pull-off mechanism comprises: the device comprises a bracket, a cylinder, a push-pull flexible shaft and a steel wire rope; one side of the bracket is arranged at the back of the mounting frame, and the other side of the bracket is used for mounting the air cylinder; one end of the cylinder is connected with the push-pull flexible shaft by a piston rod, and the other end of the push-pull flexible shaft is used for being connected with a steel wire rope fixedly arranged on the connector; the cylinder is driven, so that the piston rod drives the push-pull flexible shaft to be recovered, and the steel wire rope is pulled to unlock the connector and the arrow upper interface.

In one embodiment, the cylinder includes: the cylinder body is arranged on the support, and the air supply pipe and the electromagnetic valve are arranged on the cylinder body; the piston rod is arranged at one axial end of the cylinder body, one end of the air supply pipe is communicated with the cylinder body, and the other end of the air supply pipe is connected with the electromagnetic valve; the cylinder body is communicated with the atmosphere through the air supply pipe and the electromagnetic valve. When the electromagnetic valve is electrified, the air can be supplied to the cylinder body, the piston rod is driven to act and drive the push-pull flexible shaft to be recovered, and then the steel wire rope is pulled to unlock the connector.

In one embodiment, one end of the push-pull flexible shaft is connected with the piston rod through an adapter, and the other end of the push-pull flexible shaft is connected with the steel wire rope through a steel wire rope connecting piece; the circumferential outer sides of the piston rod and the adaptor are provided with first flexible shaft supporting cylinders, and the circumferential outer side of the steel wire rope connector is provided with a second flexible shaft supporting cylinder; the first hose supporting cylinder is connected to the support through a flange structure, and the second hose supporting cylinder is connected with the connector through a flange structure.

In one embodiment, the push-pull flexible shaft comprises a mandrel and a sheath wrapping the mandrel; the two ends of the core shaft are respectively connected with the adaptor and the steel wire rope connector, and the two ends of the sheath are respectively connected with the first hose supporting cylinder and the second hose supporting cylinder.

In one embodiment, the passive pull-off mechanism comprises: the rope winding device comprises a rope winding drum, a rope pressing roller, a rotating shaft and a driving mechanism; two ends of the rotating shaft respectively penetrate through the center positions of two opposite surfaces of the mounting frame, and the rope winding drum is arranged outside the rotating shaft through a bearing and a volute spiral spring; the scroll spring keeps the steel wire rope in a stretched state when stretching; the driving mechanism is arranged on the outer side of the mounting frame and is coaxial with the rotating shaft; under the drive of the driving mechanism, the rope winding drum can synchronously rotate along with the rotating shaft, so that the steel wire rope is wound on the rope winding drum; two ends of the rope pressing roller are respectively arranged at the tops of two opposite surfaces of the installation frame and are used for pressing and winding the steel wire rope arranged on the rope winding drum.

In one embodiment, the rope-pressing roller is used for pressing the steel wire rope part to be larger in diameter than the two ends of the steel wire rope part.

In one embodiment, the mounting base comprises a base and a base, the mounting frame being disposed on top of the base; two first butt joint plates arranged downwards are arranged on two sides of the bottom of the base, and two second butt joint plates arranged upwards are arranged on two sides of the top of the base; the first butt joint plate and the second butt joint plate which are arranged on the same side are fixedly connected through a plurality of bolts.

The embodiment of the utility model provides a rocket connector pulls off device draws off mechanism with taking off mechanism passively with the initiative and sets up in an organic whole, is equipped with for the redundancy each other and protects, thoroughly eliminates because of the problem that rocket launch delay or postpone that the connector drops equipment trouble and causes, has also improved the connector simultaneously and has pulled off the reliability of unblock. Meanwhile, the passive pull-off mechanism can keep the tension state of the steel wire rope constantly, so that the steel wire rope can be effectively prevented from being wound mutually, and the influence on normal falling of the connector is avoided.

Those skilled in the art will recognize additional features and advantages upon reading the detailed description, and upon viewing the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a connector pulling-out device according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the active pull-off mechanism according to the embodiment of the present invention.

Fig. 3 is a schematic structural view of a cylinder part according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an adaptor according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of the passive pull-off mechanism according to the embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. Spatial relationship terms such as "below," "at \8230," "lower," "above," "at \8230," "upper," "higher," and the like are used for convenience in description to explain the positioning of one element relative to a second element, indicating that the terms are intended to encompass different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, and may also mean that there are other elements between the two elements. Furthermore, terms such as "first", "second", and the like, are also used to describe various elements, regions, sections, etc. and should not be taken as limiting. Like terms refer to like elements throughout the description.

Referring to fig. 1, the present invention provides a rocket connector pulling-off device, which at least comprises: the device comprises an installation base 1, an active pull-out mechanism 2 and a passive pull-out mechanism 3. The bottom of the passive pull-off mechanism 3 is arranged at the top of the installation foundation 1, the active pull-off mechanism 2 is arranged on one side of the passive pull-off mechanism 3, and the active pull-off mechanism 2 and the passive pull-off mechanism 3 are in redundant arrangement and can be used for unlocking the arrow upper interface by pulling the connector.

Usually, under the condition that the distance and the angle between the installation position of the pull-off device and the connector are not ideal, or the pull-off device may not successfully pull off the connector passively, the connector can be quickly detached by utilizing the active pull-off mechanism 3 through active driving after the rocket takes off to a certain height. Under the condition that the position angle of the pull-off device is proper, the passive pull-off mechanism 2 is usually utilized to pull off the connector passively by the steel wire rope when the rocket takes off to a certain height and the steel wire rope is pulled out completely. The rocket connector pull-off device provided by the embodiment of the invention can simultaneously meet the pull-off requirements of two connectors, optimizes the overall mechanism layout, reduces the equipment transportation and transportation work, and is convenient for timely replacement of the pull-off mode. For example, when the rocket is close to launching, the passive pull-off mechanism cannot ideally realize the pull-off function, and the passive pull-off mechanism can be replaced by the active pull-off mechanism in time, so that the problem of delay or delay of rocket launching caused by the failure of the connector pull-off device is thoroughly solved.

According to the carrier rocket connector pull-off device provided by the embodiment of the invention, the active pull-off mechanism and the passive pull-off mechanism are arranged into a whole and are mutually redundant, so that the rocket launching efficiency and the rocket launching success rate are improved.

In one embodiment, the passive pull-off mechanism 3 is arranged to the mounting base 1 by means of a mounting frame 4. The installation frame 4 is arranged on the top of the installation foundation 1, the passive pull-out mechanism 3 is arranged in the installation frame 4, and the active pull-out mechanism 2 is arranged on the back of the installation frame 4. The active pull-off mechanism 2 and the passive pull-off mechanism 3 are arranged in a redundant manner, and in the practical application process, the active pull-off mechanism and the passive pull-off mechanism can be respectively connected with different connectors and used for pulling off the corresponding connectors when the rocket is launched. Because the passive pull-off mechanism can always keep the steel wire rope tight, the pull-off steel wire rope connected with different connectors can be prevented from being wound.

Referring to fig. 2, further, the active pull-off mechanism 2 includes: a bracket 21, a cylinder 22, a push-pull flexible shaft 23 and a steel wire rope. The bracket 21 is mounted on one side to the back of the mounting frame 4 and on the other side for mounting of the air cylinder 22. One end of the cylinder 22 is connected with the push-pull flexible shaft 23 by a piston rod 221, and the other end of the push-pull flexible shaft 23 is used for being connected with a steel wire rope arranged on the connector. By driving the air cylinder 22, the piston rod 221 can drive the push-pull flexible shaft 23 to be recovered, and further the steel wire rope is pulled to unlock the connector and the arrow upper interface.

The utility model discloses connector pull-off device when the installation, the piston rod is in whole pull-out state for the cylinder body, and the during operation, piston rod drive push-and-pull flexible axle and retrieve, and the pulling force transmits to wire rope, and then stimulates wire rope to realize the unblock of connector.

Referring to fig. 2 and 3 together, in the above embodiment, the cylinder includes: a cylinder 222 provided to the bracket 21, an air supply pipe 223 provided to the cylinder 222, and an electromagnetic valve 224. The piston rod 221 is disposed at one axial end of the cylinder 222, one side of the cylinder 222 near the piston rod 221 communicates with one end of the air supply pipe 223, and the other end of the air supply pipe 223 is connected to the solenoid valve 224. The cylinder 222 is communicated with the atmosphere through an air supply pipe 223 and a solenoid valve 224. When the electromagnetic valve 224 is electrified, air can be supplied to the cylinder body 222 through the air supply pipe 223, the piston rod 221 is driven to move, the push-pull flexible shaft 23 is driven to recover, and then the connector is unlocked by pulling the pull-off steel wire rope.

The connector pull-off device is generally arranged on a launcher, and for a new rocket, a new launcher is not usually built, and the existing launcher is usually adopted for launching. Thus, the connector pull-off device, which is limited by the structure and mounting position of the launching cradle, is not ideal in terms of pull-off distance and angle, and generally has a certain spatial distance and angle difference. Therefore, under the condition, the connector pull-off device provided by the embodiment of the invention can be adopted to control the connector to fall off in time at proper time through active operation, so that the normal launching of the rocket is guaranteed. The connector pull-off device provided by the embodiment of the invention can be arranged at any position of the launcher and applies an active pull-off force for the falling of the connector, so that the device can adapt to the condition that the rocket of the new type is launched by adopting the existing launcher. Not only avoids the reconstruction of the launcher and saves the resource and the labor cost, but also ensures the timely and successful falling of the connector when the new type rocket is launched.

The cylinder can be replaced by other different power source types with similar working principles such as a hydraulic cylinder and an electric cylinder.

With continued reference to fig. 2, in one embodiment, the push-pull flexible shaft 23 is connected to the piston rod 221 at one end via an adaptor 24 and to a steel cable at the other end via a steel cable connector 25. Wherein, the circumference outside of piston rod 21 and adaptor 25 is equipped with first flexible axle support section of thick bamboo 26, and the circumference outside of wire rope connecting piece 25 is equipped with second flexible axle support section of thick bamboo 27. The first flexible shaft support cylinder 26 and the second flexible shaft support cylinder 27 also wrap part of the push-pull flexible shaft 23 so as to facilitate the force applied after the two ends of the push-pull flexible shaft 23 are straightened. Because the connector pull-off device and the connector are generally arranged in a high-low mode, the position relation difference is large, and the push-pull flexible shaft is heavy. Consequently, in order to adapt to the position that push-and-pull flexible axle and connector are connected, also avoid the position that push-and-pull flexible axle and wire rope are connected not to produce and buckle, the utility model discloses a connector sheds the device and has set up a flexible axle support section of thick bamboo in the position of easily buckling, the flexible axle supports a section of thick bamboo and wraps up in with the part of easily buckling to ensured push-and-pull flexible axle and connector and drawn good connection and the atress between the device of taking off, also eliminated the connector simultaneously and drawn off the in-process and probably have the potential safety hazard (like the part of buckling fracture etc.).

For the convenience of connection, the first flexible shaft supporting cylinder 26 may be connected to the bracket 21 through a flange structure, and the second flexible shaft supporting cylinder 27 may be connected to the connector through a flange structure.

In the above embodiment, the push-pull flexible shaft 23 includes a mandrel and a sheath wrapping the mandrel. The mandrel is extendable and retractable a stroke relative to the sheath to transmit forces to cylinders and connectors that are not on the same axis and in the same direction. One end of the mandrel is connected with the piston rod 221 through the adapter 24, and the other end is connected with the steel wire rope through the steel wire rope connecting piece 25. Two ends of the sheath are connected with flange structures respectively arranged on the first flexible shaft supporting cylinder 26 and the second flexible shaft supporting cylinder 27. When the push-pull flexible shaft of the embodiment is installed, the mandrel at the cylinder end retracts into the sheath when the push-pull flexible shaft is installed, and the mandrel at the steel wire rope end is pulled out.

Referring to fig. 4, in the above embodiment, the adaptor includes: a double lug ring 241 mounted to the piston rod 221, a fish eye joint 242 mounted to the spindle, and a screw 243 and nut 244. The double lug rings 241 are arranged on the piston rod 221 in a threaded mode, the fisheye joints 242 are arranged on the mandrel in a threaded mode, the fisheye holes of the fisheye joints 422 are formed in the middles of the double lug rings 241, the screws 243 penetrate through the fisheye joints 242 and the double lug rings 241 at the same time and are fixedly connected through the nuts 244, and therefore the piston rod is connected with the mandrel.

Further, the wire rope connector comprises: fisheye joints, screws, and nuts. One end of the fisheye joint is in threaded connection with the mandrel, the other end of the fisheye joint is connected with the steel wire rope in a crimping mode through the fisheye hole and the screw, and the screw is fixed through the nut, so that the steel wire rope is connected with the mandrel.

In order to facilitate the operation of the adaptor and the steel wire rope connecting piece, a first waist-shaped hole is formed in the position, corresponding to the adaptor, of the first flexible shaft supporting cylinder, so that the adaptor can be connected through the first waist-shaped hole. And a second waist-shaped hole is formed in the position, corresponding to the steel wire rope connecting piece, of the second flexible shaft supporting cylinder, so that the steel wire rope connecting piece can be connected through the second waist-shaped hole.

Referring to fig. 5, in one embodiment, the passive pull-off mechanism includes: a rope drum 31, a rope pressing roller 32, a rotating shaft 33 and a driving mechanism 34. Both ends of the rotating shaft 33 respectively penetrate through the center positions of two opposite surfaces of the mounting frame 4, and the driving mechanism 34 is coaxially arranged outside the mounting frame 4 with the rotating shaft 33. The rope drum 21 is disposed outside the rotating shaft 33 via a bearing 35 and a spiral spring 36. The spiral spring 36 can keep the wire rope straight when it is stretched.

The rope drum 31 is synchronously rotatable with the rotation shaft 33 by the drive mechanism 34, and the wire rope is wound around the rope drum 31. Two ends of the rope pressing roller 32 are respectively arranged on the top of two opposite surfaces of the mounting frame 4 and are circumferentially arranged with the rope drum 31. The rope-pressing roller 32 is used for pressing the steel wire rope wound around the rope drum 31.

The utility model discloses rocket connector pulls off device drives the rope reel through drive structure and rotates along with the pivot is synchronous, makes wire rope install in the rope reel winding to utilize and press the rope rod to compress tightly the wire rope of winding at the rope reel, avoid winding between the wire rope to influence the connector and drop, further optimized wire rope's winding installation and the process of being pulled out the rope.

Further, in order to facilitate the rope pressing roller to press the steel wire rope wound on the outer side of the rope winding drum, the diameter of the rope pressing roller used for pressing the steel wire rope part is larger than the diameters of the two ends of the steel wire rope part.

Referring to fig. 5, in the above embodiment, the mounting base includes the base 11 and the base 12, and the mounting frame 4 is disposed on the top of the base 11. Two first butt joint plates arranged downwards are arranged on two sides of the bottom of the base 11, two second butt joint plates arranged upwards are arranged on two sides of the top of the base 12, and the first butt joint plates and the second butt joint plates arranged on the same side are fixedly connected through a plurality of bolts. Wherein, the bottom plate 21 is connected with the top of the base 11 by a plurality of bolts which are uniformly arranged.

The above embodiments may be combined with each other with corresponding technical effects.

The utility model provides a rocket connector draws and takes off device draws and takes off mechanism and drawing passively and take off mechanism to set up in an organic whole with initiative, each other be equipped with for the redundancy and protect, thoroughly eliminated because of the problem that rocket launch delay or postpone that the connector drops equipment trouble and causes, also improved the connector simultaneously and drawn the reliability of taking off the unblock. Meanwhile, the passive pull-off mechanism can keep the steel wire rope to be straight, the falling fault of the connectors caused by the mutual winding of the steel wire ropes is thoroughly eliminated, and the falling reliability of the connectors is further improved.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rocket connector pull-off device, comprising at least: installing a foundation, an active pull-out mechanism and a passive pull-out mechanism; the bottom of the passive pull-out mechanism is arranged at the top of the mounting base, and the active pull-out mechanism is arranged on one side of the passive pull-out mechanism; the active pull-off mechanism and the passive pull-off mechanism are arranged in a redundant manner and are used for unlocking the connector and the arrow upper interface by pulling the connector.

2. A rocket connector pull-off device as recited in claim 1, wherein said passive pull-off mechanism is mounted to said mounting base by a mounting frame; the installation frame set up in installation basis top, passive pull-off mechanism set up in the installation frame, the initiative pull-off mechanism set up in installation frame back.

3. A rocket connector pull-off device as recited in claim 2, wherein said active pull-off mechanism comprises: the device comprises a support, a cylinder, a push-pull flexible shaft and a steel wire rope;

one side of the bracket is arranged at the back of the mounting frame, and the other side of the bracket is used for mounting the air cylinder; one end of the cylinder is connected with the push-pull flexible shaft by a piston rod, and the other end of the push-pull flexible shaft is used for being connected with a steel wire rope arranged on the connector;

the cylinder is driven, so that the piston rod drives the push-pull flexible shaft to be recovered, and the steel wire rope is pulled to unlock the connector and the arrow upper interface.

4. A rocket connector pull-off device as recited in claim 3, wherein said air cylinder comprises: the cylinder body is arranged on the support, and the air supply pipe and the electromagnetic valve are arranged on the cylinder body;

the piston rod is arranged at one axial end of the cylinder body, one end of the air supply pipe is communicated with the cylinder body, and the other end of the air supply pipe is connected with the electromagnetic valve; the cylinder body is communicated with the atmosphere through the air supply pipe and the electromagnetic valve;

when the electromagnetic valve is electrified, the air can be supplied to the cylinder body, the piston rod is driven to act and drive the push-pull flexible shaft to be recovered, and then the steel wire rope is pulled to unlock the connector.

5. A rocket connector pull-off device according to claim 4, wherein one end of said push-pull flexible shaft is connected with said piston rod through an adapter, and the other end is connected with said wire rope through a wire rope connecting piece;

the circumferential outer sides of the piston rod and the adapter are provided with first flexible shaft supporting cylinders, and the circumferential outer side of the steel wire rope connecting piece is provided with a second flexible shaft supporting cylinder;

the first flexible shaft supporting cylinder is connected to the support through a flange structure, and the second flexible shaft supporting cylinder is connected with the connector through a flange structure.

6. A rocket connector pull-off device as recited in claim 5, wherein said push-pull flexible shaft includes a mandrel and a sheath encasing said mandrel; the two ends of the core shaft are respectively connected with the adaptor and the steel wire rope connecting piece, and the two ends of the sheath are respectively connected with the first flexible shaft supporting cylinder and the second flexible shaft supporting cylinder.

7. A rocket connector pull-off device according to claim 6 wherein said adaptor includes a double ear ring mounted to said piston rod, a fish eye joint mounted to said mandrel, and a screw and nut;

the fisheye hole of the fisheye joint is arranged in the middle of the double-lug ring, and the screw penetrates through the fisheye joint and the double-lug ring at the same time and is fixedly connected by utilizing the nut.

8. A rocket connector pull-off device as recited in claim 7, wherein said passive pull-off mechanism comprises: the rope winding device comprises a rope winding drum, a rope pressing roller, a rotating shaft and a driving mechanism; two ends of the rotating shaft respectively penetrate through the center positions of two opposite surfaces of the mounting frame, and the rope winding drum is arranged outside the rotating shaft through a bearing and a volute spiral spring; the spiral spring keeps the steel wire rope in a stretched state when the steel wire rope stretches;

the driving mechanism is arranged on the outer side of the mounting frame and is coaxial with the rotating shaft; under the drive of the driving mechanism, the rope winding drum can synchronously rotate along with the rotating shaft, so that the steel wire rope is wound on the rope winding drum; two ends of the rope pressing roller are respectively arranged at the tops of two opposite surfaces of the installation frame and are used for pressing and winding the steel wire rope arranged on the rope winding drum.

9. A rocket connector pull-off device as recited in claim 8, wherein said rope-pressing rollers are adapted to press the wire rope portions to have a diameter greater than the diameter of the ends thereof.

10. A rocket connector pull-off device as recited in claim 9, wherein said mounting base comprises a base and a base, said mounting frame being disposed atop said base; two first butt joint plates arranged downwards are arranged on two sides of the bottom of the base, and two second butt joint plates arranged upwards are arranged on two sides of the top of the base;

the first butt joint plate and the second butt joint plate which are arranged on the same side are fixedly connected through a plurality of bolts.