A connecting and pushing device integrated with connection, unlocking and pushing functions

Abstract

The application discloses a connecting, unlocking, pushing and impacting multifunctional integrated connecting and pushing device, which comprises a connecting bolt, a split nut, a piston cylinder, a pushing rod, a shell, a base, a connecting nut, a compression ring, a spring, a compression ring bolt and an actuating gas source; one end of the connecting bolt is connected with the split nut, the piston cylinder and the base respectively, and the other end of the connecting bolt is connected with a connected part two through the connecting nut; the split nut is arranged in the piston cylinder; the pushing rod is arranged in the piston cylinder; the piston cylinder is arranged in the shell; the inner wall of the base is connected with the outer surface of the shell; the compression ring is arranged on the outer surface of the base; the compression ring is connected with a connected part one through the compression ring bolt; the spring is arranged in the shell; and the actuating gas source is connected with the shell. The application has the advantages of compact structure, high connecting efficiency, small unlocking impact, stable and adjustable pushing force, controllable working impulse, good sealing performance, light structure weight and convenient installation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of spacecraft structures, and particularly relates to a connecting and pushing device integrating connection, unlocking and pushing functions. BACKGROUND

[0002] There are various scenarios of separating spacecrafts and rockets and deploying wings and rudders in spacecraft structures, which require connection and pushing functions. Since the separating structures are weak or the nearby devices and elements are sensitive, there is a demand for weak impact, low thrust and small impulse. In the past, explosive bolts with strong connection and pushers with strong pushing function were used to achieve the above-mentioned functions, but there are problems such as complex time sequence control of unlocking and pushing actions, complex system composition, large installation space, large weight and low reliability. SUMMARY

[0003] The application solves the technical problem of overcoming the shortcomings of the prior art and providing a connecting and pushing device integrating connection, unlocking and pushing functions, which has the advantages of compact structure, high connection efficiency, small unlocking impact, stable and adjustable thrust, controllable working impulse, good sealing performance, light structure weight and convenient installation.

[0004] The application is achieved by the following technical scheme: a connecting and pushing device integrating connection, unlocking and pushing functions, comprising a connecting bolt, a split nut, a piston cylinder, a pushing rod, a shell, a base, a connecting nut, a pressure ring, a spring, a pressure ring bolt and an actuating gas source; one end of the connecting bolt is connected with the split nut, the piston cylinder and the base respectively, and the other end of the connecting bolt is connected with a connected part two through the connecting nut; the split nut is arranged in the interior of the piston cylinder, one end surface of the split nut is in contact with the inner end surface of the piston cylinder, and the other end surface of the split nut is in contact with the lower end inclined plane of the base; the pushing rod is arranged in the interior of the piston cylinder; the piston cylinder is arranged in the interior of the shell; the inner wall of the base is connected with the outer surface of the shell; the pressure ring is sleeved on the outer surface of the base; a connected part one is sleeved on the outer surface of the base, and the pressure ring is connected with the connected part one through the pressure ring bolt; the connected part one is located between the pressure ring and a connected part two; the spring is arranged in the interior of the shell, one end of the spring is pressed against one end of the piston cylinder, and the other end of the spring is pressed against the inner wall surface of the shell; and the actuating gas source is connected with the shell.

[0005] The connecting and pushing device integrating connection, unlocking and pushing functions further comprises a first sealing ring, wherein the actuating gas source is connected with the shell through the first sealing ring.

[0006] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device further comprises a second sealing ring, wherein the second sealing ring is arranged between the push-out rod and the piston cylinder.

[0007] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device further comprises a third sealing ring, wherein the third sealing ring is arranged between the shell and the piston cylinder.

[0008] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device, the connecting bolt is a double-headed stud with a flange plate, the threads at one end of the connecting bolt are connected with the split nut, the piston cylinder, and the base, respectively, and the threads at the other end of the connecting bolt are connected with the second connected part through the connecting nut.

[0009] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device, the split nut is divided into three or four parts, the inner wall of the split nut is provided with connecting threads, and the outer wall of the split nut is provided with a support ring.

[0010] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device, the angle between the inner end surface of the piston cylinder and the central axis of the shell is 10°-40°.

[0011] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device, the angle between the lower end inclined plane of the base and the central axis of the shell is 10°-40°.

[0012] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device, the interface of the actuating gas source is perpendicular to the central axis of the shell.

[0013] The integrated connection, unlocking, and push-pull multifunctional integrated connection push-pull device, the work high-pressure gas generated by the actuating gas source enters the piston cylinder and the push rod through the gas passage of the shell, the push rod is temporarily kept stationary due to the positioning of the connecting bolt, and the piston cylinder moves under the action of the gas to overcome the resistance generated by the split nut on the piston cylinder, when the piston cylinder moves reversely to the positioning surface of the shell, the piston cylinder releases the constraint support on the split nut, the split nut expands outward and falls into the north-shaped groove of the piston cylinder under the combined action of the pre-tightening force of the connecting bolt and the push force of the push-out rod, and the split nut releases the constraint on the connecting bolt; after the split nut releases the constraint on the connecting bolt, the push-out rod pushes the connecting bolt forward through the piston cylinder under the continuous action of the high-pressure gas, the variable volume chamber continuously works, and finally the push-pull separation of the first connected part and the second connected part is realized.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] (1) The structural mechanism of the present application is compact, and is an integrated device with the functions of connection, unlocking and pushing integrated, and through single energy action, the energy utilization rate is high, and the size is small;

[0016] (2) The present application has high connection efficiency, adopts a split nut and a connecting bolt structure, and realizes bearing through a connecting thread, so that the connection efficiency is high;

[0017] (3) The present application has small unlocking impact, uses a reverse pulling type unlocking and a straight pushing type pushing mechanism, realizes that the unlocking and the pushing action directions are opposite, and the unlocking and the pushing are independently acted by a single energy step by step;

[0018] (4) The present application has stable and adjustable pushing force, uses a straight pushing type variable volume chamber pushing mechanism, when a high energy density igniter is used as the energy, the variable volume chamber output pushing force is stable, and the working pushing force can be adjusted according to the amount of the igniter;

[0019] (5) The present application forms a closed cavity after working, has good sealing performance, no pollution to the outside, light structure weight and convenient installation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Furthermore, like reference numerals are intended to represent the same components throughout the various drawings. In the drawings:

[0021] Figure 1 It is a structural appearance diagram of the connecting pushing device;

[0022] Figure 2 It is a connection principle diagram of the connecting pushing device structure;

[0023] Figure 3 It is an unlocking principle diagram of the connecting pushing device structure;

[0024] Figure 4 It is a pushing principle diagram of the connecting pushing device structure;

[0025] Figure 5 It is a connecting mechanism schematic diagram of the connecting pushing device;

[0026] Figure 6 It is an unlocking mechanism schematic diagram of the connecting pushing device;

[0027] Figure 7 It is a pushing mechanism schematic diagram of the connecting pushing device;

[0028] Figure 8 It is a partial schematic diagram of the pushing mechanism of the connecting pushing device. DETAILED DESCRIPTION

[0029] Exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Note that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0030] The present embodiment aims to overcome the problem of multiple devices working together in the prior art, and proposes a connection and pushing device integrating connection, unlocking and pushing functions, which solves the problems of multiple devices working together for connection, unlocking and pushing, complex multi-time sequence control, complex system composition, etc.

[0031] The present embodiment aims to overcome the problem of strong unlocking, large impact of large impulse in the prior art, and proposes a connection and pushing device with strong connection through split nut, weak unlocking through anti-pulling mechanism, and small pushing through variable volume chamber, which realizes connection and pushing application scenarios in weak separation structure or sensitive nearby equipment elements.

[0032] Figure 1 It is a structural appearance diagram of the connection and pushing device; Figure 2 It is a structural connection principle diagram of the connection and pushing device;

[0033] Figure 3 It is an unlocking principle diagram of the connection and pushing device structure; Figure 4 It is a pushing principle diagram of the connection and pushing device structure;

[0034] Figure 5 It is a connection mechanism diagram of the connection and pushing device; Figure 6 It is an unlocking mechanism diagram of the connection and pushing device;

[0035] Figure 7 It is a pushing mechanism diagram of the connection and pushing device. As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the connection and pushing device integrating connection, unlocking and pushing functions includes a connection bolt 1, a split nut 2, a piston cylinder 3, a pushing rod 4, a shell 5, a base 6, a connection nut 7, a compression ring 8, a spring 9, a compression ring bolt 13 and an actuating gas source 14. Among them,

[0036] One end of the connecting bolt 1 is connected with the split nut 2, the piston cylinder 3 and the base 6 respectively, and the other end of the connecting bolt 1 is connected with the connected part two 16 through the connecting nut 7; the split nut 2 is arranged in the interior of the piston cylinder 3, one end surface of the split nut 2 is in contact with the inner end surface 31 of the piston cylinder 3, and the other end surface of the split nut 2 is in contact with the lower end inclined plane of the base 6; the push rod 4 is arranged in the interior of the piston cylinder 3; the piston cylinder 3 is arranged in the interior of the shell 5; the inner wall of the base 6 is connected with the outer surface of the shell 5; the compression ring 8 is sleeved on the outer surface of the base 6; the connected part one 15 is sleeved on the outer surface of the base 6, and the compression ring 8 is connected with the connected part one 15 through the compression ring bolt 13; the connected part one 15 is located between the compression ring 8 and the connected part two 16; the spring 9 is arranged in the interior of the shell 5, one end of the spring 9 is pressed against one end of the piston cylinder 3, and the other end of the spring 9 is pressed against the inner wall surface of the shell 5; the actuating gas source 14 is connected with the shell 5.

[0037] The integrated connecting, unlocking and pushing multifunctional integrated connecting and pushing device further comprises a first sealing ring 10; wherein the actuating gas source 14 is connected with the shell 5 through the first sealing ring 10.

[0038] The integrated connecting, unlocking and pushing multifunctional integrated connecting and pushing device further comprises a second sealing ring 11; wherein the second sealing ring 11 is arranged between the push rod 4 and the piston cylinder 3.

[0039] The integrated connecting, unlocking and pushing multifunctional integrated connecting and pushing device further comprises a third sealing ring 12; wherein the third sealing ring 12 is arranged between the shell 5 and the piston cylinder 3.

[0040] The connecting bolt 1 is a double-headed stud with a flange plate, and the threads of one end of the connecting bolt 1 are connected with the split nut 2, the piston cylinder 3 and the base 6 respectively, and the threads of the other end of the connecting bolt 1 are connected with the connected part two 16 through the connecting nut 7.

[0041] The split nut 2 is divided into three or four parts, the inner wall of the split nut 2 is provided with connecting threads, and the outer wall of the split nut 2 is provided with a support ring.

[0042] The included angle between the inner end surface 31 of the piston cylinder 3 and the central axis of the shell 5 is 10°-40°, and the included angle between the lower end inclined plane of the base 6 and the central axis of the shell 5 is 10°-40°.

[0043] The interface of the actuating gas source 14 is perpendicular to the central axis of the shell 5.

[0044] The connecting bolt 1 is a double-headed stud with a flange plate, and the threads of one end of the connecting bolt 1 are connected with the split nut 2, the piston cylinder 3 and the base 6 through the mechanism composed of the split nut 2, the piston cylinder 3 and the base 6 to realize the connecting capacity, and the other end is connected with the connected part two 16 through the connecting nut 7.

[0045] Split nut 2 is a split structure with connecting threads inside and support ring ribs outside, which can be divided into three or four parts. The internal threads are connected with connecting bolt 1, and the outer ring ribs are constrained and supported by piston cylinder 3. The lower end surface is a sliding surface and guide for cooperating with base 6. The sliding inclined plane can be 10°-40°, and can be embedded with base 6 for mutual guidance and positioning to prevent split nut 2 from rotating freely with base 6.

[0046] Piston cylinder 3 constrains split nut 2 and simultaneously serves as a functional cavity for actuating gas source 14 to work, realizing the piston movement of push rod 4 under high-pressure gas. The upper end surface of piston cylinder 3 cooperates with the positioning cone surface of split nut 2, and the angle can be 10°-40°. Push rod 4 is arranged inside piston cylinder 3.

[0047] Push rod 4 is a piston push rod, which moves relative to piston cylinder 3 under the work of actuating gas source 14, and simultaneously serves as the installation and positioning of piston cylinder 3 and connecting bolt 1.

[0048] Housing 5 is the connection inlet and working channel of actuating gas source 14, and also serves as the guide support and positioning of piston cylinder 3 movement. The interface of actuating gas source can be perpendicular or parallel to the product axis. The perpendicular installation has small installation space and small unlocking impact, while the parallel installation has high unlocking efficiency and large push impact. Piston cylinder 3 is arranged inside housing 5.

[0049] Base 6 is the axial installation and positioning surface of split nut 2 and the sliding surface and guide positioning structure in the expansion process. Base 6 is connected with housing 5 through internal threads. At the same time, base 6 contacts with the inclined plane of split nut 2 through the inclined plane at the lower end, and the whole mechanism is enclosed inside.

[0050] Connecting nut 7 realizes the structural connection between connecting bolt 1 and connected part two 16.

[0051] Compression ring 8 is connected with connected part one 15 through the flange of base 6 and compression ring bolt 13.

[0052] Spring 9 is an installation and positioning elastic element of piston cylinder 3, push rod 4, split nut 2 and other parts. Spring 9 is arranged inside housing 5, and the right end of spring 9 is pressed against the left end of piston cylinder 3.

[0053] Sealing ring 10, sealing ring 11 and sealing ring 12 are sealing elements of actuating gas source 14 and housing 5, push rod 4 and piston cylinder 3, and piston cylinder 3 and housing 5, respectively. Sealing ring 10 is a static seal, and sealing ring 11 and sealing ring 12 are dynamic seals.

[0054] Compression ring bolt 13 is a structural connection element of compression ring 8 and connected part one 15.

[0055] The actuating gas source 14 is a component or device for generating high-pressure gas, usually an igniter of a pyrotechnic device, or a high-pressure gas cylinder gas source pipeline, which realizes the sealing of the actuating gas source through the sealing ring 10.

[0056] The connection working principle is that the connecting bolt 1 is connected through a flange double-headed stud, one end of which is connected through a split nut 2, a piston cylinder 3, and a base 6 to realize the threaded connection, and the connecting bolt 1 is connected to the base 6 through the flange to apply a mounting torque to the base 6. The other end of the connecting bolt 1 is connected to the connected part 2 16 through a connecting nut 7.

[0057] The unlocking working principle is that the high-pressure gas of the actuating gas source 14 works through the gas passage of the shell 5 into the piston cylinder 3 and the push rod 4, the push rod 4 is temporarily fixed and not moved due to the positioning of the connecting bolt 1, and the piston cylinder 3 moves under the action of the gas to overcome the resistance of the spring 9 and the connecting bolt 1 through the split nut 2. When the piston cylinder 3 moves reversely to the positioning surface of the shell 5, the piston cylinder 3 releases the constraint support of the split nut 2, and the split nut 2 expands outward and falls into the north slot of the piston cylinder 3 under the combined action of the pre-tightening force of the connecting bolt 1 and the thrust of the push rod 4, and the split nut 2 releases the constraint of the connecting bolt 1.

[0058] The push working principle is that after the split nut 2 releases the constraint of the connecting bolt 1, the push rod 4 continues to work under the action of the high-pressure gas, and the connecting bolt 1 is pushed forward by the piston cylinder 3 to work, realizing the continuous work of the variable volume chamber, and finally realizing the push separation of the connected part 1 15 and the connected part 2 16.

[0059] As shown in Figure 8 , the connecting push device obtains the corresponding equation of the connection function and the unlocking resistance according to the design of the structure angle, and the constraint relationship is as follows:

[0060] Taking the 12° inclined plane of the split nut 2 as an example, according to the force balance equation of the connecting push device:

[0061]

[0062] F·R=F·R1+F·R2;

[0063] F·R1=F·tan12°;

[0064] F·R2=F·tan(30°-ρ v );

[0065] Wherein: F is the connection axial force generated by the threaded connection of the connecting bolt 1 to the split nut 2; F R is the radial force resultant of the piston cylinder 3 supporting the split nut 2; F R1 is the radial force generated by the three inclined planes of the base 6 to the split nut 2; F R2 is the radial force generated by the threaded connection of the connecting bolt 1 to the split nut 2; N1-N3 are the forces generated by the three inclined planes of the base 6 to the split nut 2; p v is the friction angle, f is the thread friction coefficient.

[0066] Effect: The formula makes the matching relationship between the structure connection and the mechanism movement good.

[0067] The structural mechanism of the embodiment is compact, is an integrated device integrating the functions of connection, unlocking and pushing, and through single energy action, has high energy utilization rate and small size; the embodiment has high connection efficiency, adopts a split nut and a connecting bolt structure, and realizes bearing through a connecting thread, so that the connection efficiency is high; the unlocking impact of the embodiment is small, a reverse pulling type unlocking and a straight pushing type pushing mechanism are used, the unlocking and the pushing action directions are opposite, and the unlocking and the pushing are independently acted on by single energy in steps; the pushing force of the embodiment is stable and adjustable, a straight pushing type variable volume chamber pushing mechanism is used, when an energy density high igniter is used as the energy, the variable volume chamber output pushing force is stable, and the working pushing force can be adjusted according to the amount of the igniter; the device of the embodiment forms a sealed cavity after working, has good sealing performance, has no pollution to the outside, has light structure weight, and is convenient to install.

[0068] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application, therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not depart from the content of the technical solutions of the present application, belongs to the protection scope of the technical solutions of the present application.

Claims

1. A multi-functional connection and push-push device integrating connection, unlocking, and push-push functions, characterized in that... include: Connecting bolt (1), split nut (2), piston cylinder (3), ejector rod (4), housing (5), base (6), connecting nut (7), pressure ring (8), spring (9), pressure ring bolt (13), and actuating air source (14); among which, One end of the connecting bolt (1) is connected to the split nut (2), the piston cylinder (3), and the base (6) respectively, and the other end of the connecting bolt (1) is connected to the second part (16) through the connecting nut (7); The split nut (2) is disposed inside the piston cylinder (3). One end face of the split nut (2) is in contact with the inner end face (31) of the piston cylinder (3), and the other end face of the split nut (2) is in contact with the lower end inclined plane of the base (6). The push rod (4) is disposed inside the piston cylinder (3); The piston cylinder (3) is disposed inside the housing (5); The inner wall of the base (6) is connected to the outer surface of the shell (5); The pressure ring (8) is sleeved on the outer surface of the base (6); The first connected component (15) is sleeved on the outer surface of the base (6), and the pressure ring (8) is connected to the first connected component (15) through the pressure ring bolt (13); the first connected component (15) is located between the pressure ring (8) and the second connected component (16); The spring (9) is disposed inside the housing (5), one end of the spring (9) presses against one end of the piston cylinder (3), and the other end of the spring (9) presses against the inner wall surface of the housing (5); The actuation air source (14) is connected to the housing (5).

2. The integrated connection, unlocking, and pushing device as described in claim 1, characterized in that... It also includes: a first sealing ring (10); wherein, The actuation air source (14) is connected to the housing (5) through the first sealing ring (10).

3. The integrated connection, unlocking, and pushing device according to claim 1, characterized in that... It also includes: a second sealing ring (11); wherein, The second sealing ring (11) is disposed between the push rod (4) and the piston cylinder (3).

4. The integrated connection, unlocking, and pushing device as described in claim 1, characterized in that... It also includes: a third sealing ring (12); wherein, The third sealing ring (12) is disposed between the housing (5) and the piston cylinder (3).

5. The integrated connection, unlocking, and pushing device as described in claim 1, characterized in that: The connecting bolt (1) is a double-ended stud with a flange. The thread at one end of the connecting bolt (1) is connected to the split nut (2), the piston cylinder (3), and the base (6) respectively. The thread at the other end of the connecting bolt (1) is connected to the second part (16) through the connecting nut (7).

6. The integrated connection, unlocking, and pushing device according to claim 1, characterized in that: The split nut (2) is divided into three or four segments. The inner wall of the split nut (2) is provided with connecting threads, and the outer wall of the split nut (2) is provided with supporting ring ribs.

7. The integrated connection, unlocking, and pushing device as described in claim 1, characterized in that: The angle between the inner end face (31) of the piston cylinder (3) and the central axis of the housing (5) is 10° to 40°.

8. The integrated connection, unlocking, and push-push multi-functional device according to claim 1, characterized in that: The angle between the lower end inclined plane of the base (6) and the central axis of the shell (5) is 10° to 40°.

9. The integrated connection, unlocking, and push-push multi-functional device according to claim 1, characterized in that: The interface of the actuating air source (14) is perpendicular to the central axis of the housing (5).

10. The integrated connection, unlocking, and push-pull multi-functional connection and push-pull device according to claim 1, characterized in that: The high-pressure gas generated by the actuating gas source (14) enters the piston cylinder (3) and the push rod (4) through the gas channel of the housing (5). The push rod (4) remains stationary due to the positioning of the connecting bolt (1), while the piston cylinder (3) moves under the action of the gas, overcoming the resistance generated by the spring (9) and the connecting bolt (1) through the split nut (2). When the piston cylinder (3) moves in the opposite direction to the positioning surface of the housing (5), the piston cylinder (3) releases the constraint support of the split nut (2). Under the combined action of the pre-tightening force of the connecting bolt (1) and the thrust of the push rod (4), the split nut (2) unfolds outward and falls into the north-shaped groove of the piston cylinder (3). The split nut (2) releases the constraint of the connecting bolt (1). After the split nut (2) releases the constraint on the connecting bolt (1), the push rod (4) pushes the connecting bolt (1) forward through the piston cylinder (3) under the continued action of the high-pressure gas, so as to realize the continuous work of the variable volume cavity and finally realize the push-and-push separation of the connected part one (15) and the connected part two (16).

Images