CN114674182A - Separating shield screw protective structure and preparation device and protective method thereof - Google Patents

Abstract

The invention provides a separation shield screw protection structure, wherein the separation shield screw is used for connecting a carrier rocket stage section, and the protection structure comprises a nail sleeve made of silicon rubber, and the nail sleeve is used for being connected with a nut of the separation shield screw connected to the carrier rocket stage section. The invention also provides a preparation device and a protection method of the separation shield screw protection structure. The invention can effectively protect the separation shield screw connected to the carrier rocket stage section.

Description

Separating shield screw protective structure and preparation device and protective method thereof

technical field

The invention relates to a separation shield screw protection structure, a preparation device and a protection method thereof, in particular to a separation shield screw protection structure for connecting a launch vehicle interstage section, a preparation device and a protection method thereof.

Background technique

At present, the separation shield screws of the first- and second-stage interstages and the second- and third-stage interstages of the Ceres-1 rocket will be exposed on the outer surface of the shell after the installation is completed. The exposed state of the screw will cause the aerodynamic heat generated by the launch vehicle during flight to ablate the screw, and the screw is in danger of being damaged.

In the prior art, this problem is usually solved by applying silicone rubber to the split passport screws for thermal protection. The current protection method is to manually apply silicone rubber on the shooting range for curing. Specifically, after the installation of the separation shield screws is completed, they are exposed on the outer surface of the shell. Cover the screw until the entire screw cap is completely covered with silicone rubber, and then use a tool to apply silicone rubber to the part where the screw is in contact with the rocket casing, and try to make the screw completely covered with silicone rubber. After completing one screw, follow this method to complete the coating of other screws in sequence.

However, the existing artificial protection methods have the following defects:

(1) Due to manual operation, this method is inefficient on the one hand, and on the other hand, the coverage of the silicone rubber on the separation shield screws is not good, and the coating effect depends on the proficiency of the operator, so the quality is difficult to guarantee. , and not beautiful.

(2) Since the launch vehicle casing is a cylinder, and the outer surface of the casing is usually a curved surface with an arc (viewed along the horizontal direction of the cylinder), the screws after installation will be arranged on the curved surface, which will It makes the silicone rubber coated on the screw extremely easy to flow slowly along the outer surface of the shell, so that the already coated parts are exposed again. This is a more difficult problem for the operator: it is necessary to bend and coat the screw without dislodging the silicone rubber. The operator can only apply as quickly as possible under the premise of accurate application, which requires high technical proficiency.

(3) Since the operator needs to quickly apply silicone rubber, it is actually difficult to do it, because there are hundreds of screws on an arrow that need to do this treatment, which makes it impossible to quickly complete the application of an arrow.

SUMMARY OF THE INVENTION

In view of the above technical problems, the present invention provides a separation shield screw protection structure, a preparation device and a protection method thereof, which are used to solve at least one of the above technical problems.

The technical scheme adopted in the present invention is:

An embodiment of the present invention provides a separation shield screw protection structure, the separation shield screw is used to connect the launch vehicle interstage, the protection structure includes a nail sleeve made of silicone rubber, and the nail sleeve is used for connecting with Nut connection to the breakaway shroud screw on the launch vehicle interstage.

Optionally, silicone rubber is used to connect the nail sleeve and the shell of the interstage section of the launch vehicle.

The embodiment of the present invention also provides a preparation device for separating shield screw protection structure, which is used for preparing the aforementioned protection structure. The preparation device includes: a pressing plate, a male mold and a female mold, and the pressing plate is formed with A placement groove for placing the mold, a plurality of cylindrical mold grooves and a plurality of overflow ports are formed on the female mold, and each overflow port is communicated with the corresponding cylindrical mold groove; A plurality of protrusions that fit a plurality of cylindrical cavities.

Optionally, the female mold includes a first female mold and a second female mold that are symmetrically arranged, each female mold is formed with a plurality of depressions and a plurality of overflow ports, and the first female mold and the second female mold are formed. The recesses of the female mold cooperate with each other to form the cylindrical mold groove.

Optionally, a plurality of openings are further formed on both sides of the pressing plate; each opening is used to expose a corresponding overflow port when the female mold is placed in the placing groove.

Optionally, a plurality of through holes are also formed at the bottom of the pressing plate.

The embodiment of the present invention also provides a preparation device for separating the shield screw protective structure, which is used for preparing the aforementioned protective structure. m vertical plate groups arranged on the bottom plate, the male mold part includes a top plate and m pressing groups arranged on the top plate, the female mold part includes m female molds, wherein the i-th vertical plate The plate group includes two vertical plates arranged in parallel, and a placement groove for the i-th female mold is formed between the two vertical plates; n cylindrical mold grooves and n overflow ports are formed on the i-th female mold , each overflow port is communicated with the corresponding mold groove; the i-th pressing group includes a protrusion adapted to the n cylindrical mold grooves, and the value of i is 1 to m.

An embodiment of the present invention further provides a method for protecting a split shield screw, wherein the split shield screw is used to connect a launch vehicle interstage, and the method includes the following steps:

S10, using a mold to mold a set number of nail sleeves;

S20, pressing the nail sleeve on the nut of the separation shield screw connected to the interstage of the launch vehicle;

S30, smearing silicone rubber between the nail sleeve and the shell of the interstage section of the launch vehicle, and curing the smeared silicone rubber.

The embodiments of the present invention have at least the following technical effects: the present invention uses a nail sleeve to connect the separation shield screws used to connect the interstage sections of the launch vehicle, which can improve the coating quality of the silicone rubber on the separation shield screws. The external surface is a non-planar structure. Therefore, compared with the existing method of directly coating silicone rubber on the screw, the use of nail sleeves to connect and separate the shield screws can solve the existing problem of "may make the silicone rubber coated on the screw". It is extremely easy to slowly flow along the outer surface of the shell, making the already painted areas appear bare again”. Moreover, since the nail sleeve is compatible with the nut, it is only necessary to put the nail sleeve on the nut. Compared with the existing "bending and coating the screw, the silicone rubber cannot be displaced". The coating method can reduce the difficulty of operation. In addition, the provided device for preparing the protective structure can mass-produce the nail sleeves, so that the production efficiency of the nail sleeves is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the accompanying drawings required for the description of the embodiments or related technologies. Obviously, the accompanying drawings in the following description are only the For some embodiments of the invention, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic diagram of a separation shield screw protection structure provided by an embodiment of the present invention;

2a and 2b are schematic diagrams of the use state of the protective structure according to the embodiment of the present invention;

Fig. 3 is the exploded view of the preparation device of the embodiment of the present invention;

FIG. 4 is a side view of the male mold of the embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the embodiment of the present invention, the separation shield screw is used for connecting the interstage sections of the launch vehicle, for example, for connecting the first- and second-stage inter-stage sections and the second- and third-stage inter-stage sections of the rocket.

FIG. 1 is a schematic diagram of a screw protection structure for separating a shield provided by an embodiment of the present invention. FIG. 2a and FIG. 2b are schematic diagrams of the use state of the protective structure according to the embodiment of the present invention. FIG. 3 is an exploded view of the preparation device according to the embodiment of the present invention. FIG. 4 is a side view of the male mold of the embodiment of the present invention.

As shown in FIG. 1 , FIG. 2 a and FIG. 2 b , the separation shield screw protection structure provided by the embodiment of the present invention may include a nail sleeve 1 made of silicone rubber, and the nail sleeve is used for connecting with the interstage of the launch vehicle. The nut connection of the breakaway shield screw 2 on the segment. The size and specification of the nail sleeve 1 are compatible with the screws 2 for separating the shield.

Further, the nail sleeve and the shell of the interstage section of the launch vehicle are connected by silicone rubber, so as to enhance the connection force between the nail sleeve and the shell.

Another embodiment of the present invention provides a device for preparing a shield screw protective structure, which is used to prepare the aforementioned protective structure, that is, a nail sleeve 1. As shown in FIG. 3 and FIG. 4, the preparation device may include: a pressing plate 3, The male mold 4 and the female mold 5, the pressing plate 3 is formed with a placement groove 6 for the female mold to be placed, and the female mold 5 is formed with a plurality of cylindrical mold grooves and a plurality of overflow ports 7, each The overflow port 7 communicates with the corresponding cylindrical die grooves; the male die 4 is formed with a plurality of protruding portions 8 which are adapted to the plurality of cylindrical die grooves.

In an embodiment of the present invention, a cylindrical die groove is used to contain the silicone rubber liquid. The protrusions 8 are cylindrical. The protruding portion 8 and the cylindrical die groove are connected by an interference fit, and the distance between the protruding portion 8 and the bottom of the cylindrical die groove is determined based on the thickness of the nail cap, that is, equal to the thickness of the nail cap. The overflow ports 7 are arranged on both sides of the female mold, and are used to allow the silicone rubber liquid to flow out when the silicone rubber liquid is poured into the cylindrical mold groove. The size and shape of the overflow port 7 can be set according to actual needs.

In the embodiment of the present invention, the female mold and the male mold can be made of polytetrafluoroethylene to facilitate demolding. The pressure plate can be made of aluminum.

As shown in FIG. 3 , the female mold 5 may include a first female mold 501 and a second female mold 502 that are symmetrically arranged to facilitate demolding. Each female mold 501 is formed with a plurality of concave portions and a plurality of overflow openings, and the concave portions of the first female mold 501 and the second female mold 502 cooperate with each other to form the cylindrical mold groove.

In the embodiment of the present invention, the number of cylindrical mold grooves can be set according to actual needs. In one illustrative embodiment, there may be ten.

In the embodiment of the present invention, the pressing plate 3 is used to provide a supporting force for the female mold 5 when the male mold 4 presses the silicone rubber liquid in the female mold 5 to prevent the slot mold from moving.

Further, as shown in FIG. 3 , a plurality of openings 9 are formed on both sides of the pressing plate 3; Overflow. In an exemplary embodiment, the opening portion 9 may be U-shaped.

Further, a plurality of through holes (not shown) are formed at the bottom of the pressing plate for ejecting the female mold by using ejector rods or the like to penetrate through the through holes at the bottom of the pressing plate after the nail cap is formed. In an exemplary embodiment, the number of through holes may be four.

The working principle of the device for preparing the screw protection structure for the separation shield provided by the embodiment of the present invention may include:

S1, the female mold is placed in the placement groove of the pressing plate.

S2, pour an appropriate amount of silicone rubber liquid into each cylindrical die groove.

The height of the silicone rubber liquid in the die cavity is lower than the level of the overflow port.

S3, align the protrusion of the male mold with the mold groove and press the male mold downward so that the protrusion presses down the silicone rubber liquid in the mold groove until it is pressed in place.

The male die can be pressed manually.

S4, wait for the silicone rubber liquid to cure naturally and demold.

After the silicone rubber liquid is solidified, the male mold can be pulled out first, then the female mold can be pushed out from the bottom of the pressing plate, and then the first female mold and the second female mold can be separated.

The preparation device provided in this embodiment can prepare multiple nail caps at one time. For example, dozens of nail sleeves can be molded and cured at one time, and 120 nail sleeves are required for one flight test product, so that the nail sleeves after being molded and cured several times can meet the needs of the launch vehicle. In practical applications, the required number of nail caps can be produced in advance. After the separation shield screws on the rocket are installed, the nail sleeves can be directly installed on the nuts along the outer surface of the shell, and then smeared with silicone rubber. Silicone rubber coating quality and coating speed.

Another embodiment of the present invention provides a device for preparing a shield screw protection structure, comprising: a pressing plate part, a male mold part and a female mold part, the pressing plate part includes a bottom plate and m vertical plates arranged side by side on the bottom plate The plate group, the male mold part includes a top plate and m pressing groups arranged side by side on the top plate, the female mold part includes m female molds, wherein the i-th vertical plate group includes two vertical plates arranged in parallel. Plate, a placement groove for the i-th female mold is formed between the two vertical plates; n cylindrical mold grooves and n overflow ports are formed on the i-th female mold, each overflow port and corresponding The mold grooves are communicated; the i-th pressing group includes protrusions adapted to the n cylindrical mold grooves, and the value of i is 1 to m.

In an exemplary embodiment of the present invention, m≧2, preferably 6 or 8. Preferably, n=10.

In this embodiment, the pressing plate, the female mold, and the male mold are the same as those in the previous embodiments, and their specific descriptions are omitted to avoid redundant description.

Further, in the embodiment of the present invention, the male mold part is also provided with an operating handle, specifically, operating handles are respectively provided at both ends of the male mold part, and the two operating handles are convenient to take the male mold part.

Compared with the previous embodiments, the preparation device provided in this embodiment can prepare more nail caps at one time, and can improve the production efficiency of nail caps.

In summary, the present invention uses a nail sleeve to connect the separation shield screws used for connecting the interstage sections of the launch vehicle, which can improve the coating quality of the silicone rubber on the separation shield screws. Since the outer surface of the rocket shell is a non-planar structure, Therefore, compared with the existing method of directly coating the silicone rubber on the screw, the use of a nail sleeve to connect and separate the shield screws can solve the existing problem of "making the silicone rubber coated on the screw extremely easy to follow the outer surface of the shell". Flowing slowly, the problem of nudity reappears in areas that have been painted. Moreover, since the nail sleeve is compatible with the nut, it is only necessary to put the nail sleeve on the nut. Compared with the existing "bending and coating the screw, the silicone rubber cannot be displaced". The coating method can reduce the difficulty of operation. In addition, the provided device for preparing the protective structure can mass-produce the nail sleeves, so that the production efficiency of the nail sleeves is improved.

An embodiment of the present invention further provides a method for protecting a split shield screw, wherein the split shield screw is used to connect a launch vehicle interstage, and the method includes the following steps:

S10, using a mold to mold a set number of nail sleeves.

The mold used may be the manufacturing device of the protective structure of the previous embodiment.

S20, pressing the nail sleeve on the nut connected to the separation shield screw on the interstage of the launch vehicle.

S30, smearing silicone rubber between the nail sleeve and the shell of the interstage section of the launch vehicle, and curing the smeared silicone rubber, such as natural curing.

While some specific embodiments of the present invention have been described in detail by way of example, those skilled in the art will appreciate that the above examples are provided for illustration only and not for the purpose of limiting the scope of the invention. It will also be understood by those skilled in the art that various modifications may be made to the embodiments without departing from the scope and spirit of the invention. The scope of the present disclosure is defined by the appended claims.

Claims (8)

1. A separation shield screw protection structure, characterized in that, the separation shield screw is used to connect a launch vehicle interstage, and the protection structure includes a nail sleeve made of silicone rubber, and the nail sleeve is used for connecting with the rocket. Nut connection to the breakaway shroud screw on the launch vehicle interstage. 2 . The protective structure according to claim 1 , wherein the nail sleeve and the shell of the interstage section of the launch vehicle are connected by silicone rubber. 3 . 3. A preparation device for separating shield screw protective structure, characterized in that, for preparing the protective structure according to claim 1 or 2, the preparation device comprises: a pressing plate, a male mold and a female mold, the pressing plate In the form of a placement groove for the female mold to be placed, a plurality of cylindrical mold grooves and a plurality of overflow ports are formed on the female mold, and each overflow port is communicated with the corresponding cylindrical mold groove; the male mold A plurality of protrusions adapted to the plurality of cylindrical die grooves are formed thereon. 4 . The preparation device according to claim 3 , wherein the female mold comprises a first female mold and a second female mold that are symmetrically arranged, and each female mold is formed with a plurality of concave portions and a plurality of overflow ports. 5 . , the concave parts of the first female mold and the second female mold cooperate with each other to form the cylindrical mold groove. 5. The preparation device according to claim 4, wherein a plurality of openings are further formed on both sides of the pressing plate; Expose the corresponding overflow port. 6 . The preparation device according to claim 5 , wherein a plurality of through holes are further formed at the bottom of the pressing plate. 7 . 7. A preparation device for separating shield screw protective structure, characterized in that, for preparing the protective structure according to claim 1 or 2, the preparation device comprises: a pressing plate part, a male mold part and a female mold part, wherein the The pressing plate portion includes a bottom plate and m vertical plate groups arranged on the bottom plate, the male mold portion includes a top plate and m pressing groups arranged on the top plate, and the female mold portion includes m female molds, Wherein, the i-th vertical plate group includes two vertical plates arranged in parallel, and a placement groove for the i-th female mold is formed between the two vertical plates; n cylindrical mold grooves are formed on the i-th female mold and n overflow openings, each of which is communicated with the corresponding mold groove; the i-th pressing group includes a protrusion adapted to the n cylindrical mold grooves, and the value of i is 1 to m. 8. A method for protecting a split shield screw, wherein the split shield screw is used to connect a launch vehicle interstage, and the method comprises the following steps: S10, using a mold to mold a set number of nail sleeves; S20, pressing the nail sleeve on the nut of the separation shield screw connected to the interstage of the launch vehicle; S30, smearing silicone rubber between the nail sleeve and the shell of the interstage section of the launch vehicle, and curing the smeared silicone rubber.

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