Connecting, pushing and punching device integrating multiple functions of connecting, unlocking and pushing and punching

Abstract

The invention discloses a connecting, pushing and punching device integrating multiple functions of connecting, unlocking and pushing and punching. The connecting, pushing and punching device comprises a connecting bolt, a split nut, a piston barrel, a pushing-out rod, a shell, a base body, a connecting nut, a pressing ring, a spring, a pressing ring bolt and an actuating air source. Wherein one end of the connecting bolt is connected with the split nut, the piston cylinder and the base body, and the other end of the connecting bolt is connected with a second connected piece through the connecting nut; the split nut is arranged in the piston cylinder; the push-out rod is arranged in the piston cylinder; the piston cylinder is arranged in the shell; the inner wall of the base body is connected with the outer surface of the shell; the outer surface of the base body is sleeved with the pressing ring. The pressing ring is connected with the first connected piece through a pressing ring bolt. The spring is arranged in the shell; and the actuating air source is connected with the shell. The invention has the advantages of compact structure, high connection efficiency, small unlocking impact, stable and adjustable thrust, controllable acting impulse, good sealing performance, light structural weight and convenience in installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of spacecraft structures, and in particular relates to a connection and thrusting device with integrated connection, unlocking and thrusting functions. Background Art

[0002] There are many scenarios in the spacecraft structure that require connection and thrust functions, such as separation of rockets and satellites, and deployment of wing rudders. Due to the weak strength of the separation structure or the sensitivity of nearby equipment components, there is a demand for the use of weak impact, low thrust, and small impulse. In the past, strong-connected explosive bolts and strong thrust thrusters were used to achieve this, but there were problems such as multiple devices working together, the unlocking and thrusting actions being two complex timing controls, complex system composition, large installation space, heavy weight, and low reliability. Summary of the invention

[0003] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art and provide a multifunctional integrated connection, unlocking and pushing device, 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 easy installation.

[0004] The object of the present invention is achieved through the following technical scheme: a connecting and pushing device with integrated connection, unlocking and pushing functions, comprising: a connecting bolt, a petal 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 air source; wherein, one end of the connecting bolt is respectively connected to the petal nut, the piston cylinder and the base, and the other end of the connecting bolt is connected to the two connected parts through the connecting nut; the petal nut is arranged inside the piston cylinder, one end face of the petal nut is in contact with the inner end face of the piston cylinder, and the other end face of the petal nut is in contact with the inner end face of the piston cylinder, and the other end face of the petal nut is in contact with the inner end face of the piston cylinder. The lower end inclined plane of the base is in contact with each other; the ejection rod is arranged inside the piston cylinder; the piston cylinder is arranged inside the shell; the inner wall of the base is connected to the outer surface of the shell; the pressure ring is sleeved on the outer surface of the base; the connected part is sleeved on the outer surface of the base, and the pressure ring is connected to the connected part 1 through the pressure ring bolt; the connected part 1 is located between the pressure ring and the connected part 2; the spring is arranged inside 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; the actuating air source is connected to the shell.

[0005] The above-mentioned integrated connection, unlocking and pushing multifunctional connection and pushing device also includes: a first sealing ring; wherein the actuating air source is connected to the shell through the first sealing ring.

[0006] The above-mentioned integrated connection, unlocking and pushing multifunctional connection and pushing device also includes: a second sealing ring; wherein the second sealing ring is arranged between the ejection rod and the piston cylinder.

[0007] The above-mentioned integrated connection, unlocking and pushing multifunctional connection and pushing device also includes: a third sealing ring; wherein the third sealing ring is arranged between the shell and the piston cylinder.

[0008] In the above-mentioned integrated connection, unlocking and pushing multifunctional integrated connection and pushing device, the connecting bolt is a double-headed stud with a flange, and the thread at one end of the connecting bolt is respectively connected to the split nut, the piston cylinder and the base, and the thread at the other end of the connecting bolt is connected to the two connected parts through the connecting nut.

[0009] In the above-mentioned integrated connection, unlocking and pushing multifunctional integrated connection and pushing device, the split nut is divided into a three-petal or four-petal structure, the inner wall of the split nut is provided with a connecting thread, and the outer wall of the split nut is provided with a supporting ring rib.

[0010] In the above-mentioned integrated connection, unlocking and pushing multifunctional connection and pushing device, the angle between the inner end surface of the piston cylinder and the central axis of the shell is 10° to 40°.

[0011] In the above-mentioned integrated connection, unlocking and pushing multifunctional connection and pushing device, the angle between the lower end inclined plane of the base and the central axis of the shell is 10° to 40°.

[0012] In the above-mentioned integrated connection, unlocking and pushing multifunctional connection and pushing device, the interface of the actuating air source is perpendicular to the central axis of the shell.

[0013] In the above-mentioned integrated connection, unlocking and pushing multifunctional connecting and pushing device, the working high-pressure combustion gas generated by the actuating gas source enters the piston cylinder and the push rod through the gas channel of the shell. The push rod is temporarily kept stationary due to the positioning of the connecting bolt, and the piston cylinder overcomes the resistance generated by the spring and the connecting bolt through the split nut and moves under the action of the gas. When the piston cylinder moves in the opposite direction to the positioning surface of the shell, the piston cylinder releases the restraining support on the split nut. Under the combined action of the preload force of the connecting bolt and the thrust of the push rod, the split nut expands outward and falls into the north-shaped groove of the piston cylinder, and the split nut releases the constraint on the connecting bolt; after the split nut releases the constraint on the connecting bolt, the push rod pushes the connecting bolt forward through the piston cylinder under the continued action of the high-pressure gas to perform work, thereby realizing continuous work of the variable-volume chamber, and finally realizing the pushing and separation of the connected part one and the connected part two.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The structure of the present invention is compact, and it is a device that integrates the functions of connection, unlocking, and pushing. It uses a single energy source, has high energy utilization, and is small in size;

[0016] (2) The present invention has high connection efficiency, adopts a split nut and a connecting bolt structure, realizes load bearing through connecting threads, and has high connection efficiency;

[0017] (3) The present invention has a small unlocking impact, uses a reverse-pull unlocking and a direct-push thrust mechanism, and realizes that the unlocking and thrusting act in opposite directions, and the unlocking and thrusting act independently in steps through a single energy source;

[0018] (4) The thrust of the present invention is stable and adjustable. When a direct-push variable-volume cavity thrust mechanism is used and an igniter with high energy density is used as an energy source, the thrust output of the variable-volume cavity is stable, and the working thrust can be adjusted according to the amount of igniter powder;

[0019] (5) After the device of the present invention is in operation, a closed cavity is formed, which has good sealing performance, no external pollution, light structure and weight, and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 It is the structural outline diagram of the connecting push-punch device;

[0022] Figure 2 It is the schematic diagram of the connection structure of the push-punch device;

[0023] Figure 3 Unlock the schematic diagram for connecting the thrust device structure;

[0024] Figure 4 It is the schematic diagram of the push-pushing structure for connecting the push-pushing device;

[0025] Figure 5 A schematic diagram of the connection mechanism for connecting the push-punch device;

[0026] Figure 6 A schematic diagram of the unlocking mechanism for connecting the push-punch device;

[0027] Figure 7 A schematic diagram of a push-punch mechanism for connecting a push-punch device;

[0028] Figure 8 It is a partial schematic diagram of the push-punch mechanism connected to the push-punch device. DETAILED DESCRIPTION

[0029] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] The purpose of this embodiment is to overcome the problem of multiple devices working in coordination in the prior art, and proposes a connection and pushing device with integrated connection, unlocking and pushing functions, which solves the problems of multiple devices working in coordination for connection, unlocking and pushing, complex multi-timing control, and complex system composition.

[0031] The purpose of this embodiment is to overcome the problems of strong unlocking and large impact of large impulse in the prior art, and proposes a connection and pushing device through strong connection of a split nut, weak unlocking of a back-pull mechanism, and small pushing of a variable volume cavity, thereby realizing connection and pushing application scenarios where the separation structure is weak or nearby equipment components are sensitive.

[0032] Figure 1 It is the structural outline diagram of the connecting push-punch device; Figure 2 It is the schematic diagram of the connection structure of the push-punch device;

[0033] Figure 3 Unlock the schematic diagram for connecting the thrust device structure; Figure 4 It is the schematic diagram of the push-pushing structure for connecting the push-pushing device;

[0034] Figure 5 A schematic diagram of the connection mechanism for connecting the push-punch device; Figure 6 A schematic diagram of the unlocking mechanism for connecting the push-punch device;

[0035] Figure 7 It is a schematic diagram of the push-pushing mechanism connected to the push-pushing device. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the integrated connection, unlocking and pushing multifunctional integrated connection and pushing device comprises: a connection bolt 1, a petal nut 2, a piston cylinder 3, a push rod 4, a housing 5, a base 6, a connection nut 7, a pressure ring 8, a spring 9, a pressure ring bolt 13 and an actuating air source 14. Among them,

[0036] 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 connected part 2 16 through the connecting nut 7; the split nut 2 is arranged inside the piston cylinder 3, one end face of the split nut 2 contacts the inner end face 31 of the piston cylinder 3, and the other end face of the split nut 2 contacts the lower end inclined plane of the base 6; the ejection rod 4 is arranged inside the piston cylinder 3; the piston cylinder 3 is arranged inside the shell 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 connected part 15 is sleeved on the outer surface of the base 6, and the pressure ring 8 is connected to the connected part 15 through the pressure ring bolt 13; the connected part 15 is located between the pressure ring 8 and the connected part 2 16; the spring 9 is arranged inside 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 air source 14 is connected to the shell 5.

[0037] The integrated connection, unlocking and pushing multifunctional connection and pushing device also includes: a first sealing ring 10; wherein the actuating air source 14 is connected to the housing 5 through the first sealing ring 10.

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

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

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

[0041] The split nut 2 is divided into a three-petal or four-petal structure, the inner wall of the split nut 2 is provided with a connecting thread, and the outer wall of the split nut 2 is provided with a supporting ring rib.

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

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

[0044] The connecting bolt 1 is a double-headed stud with a flange, one end of which has a thread that realizes connection capability through a mechanism composed of a split nut 2, a piston cylinder 3, and a base 6, and the other end realizes a structural connection with a connected part 16 through a connecting nut 7.

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

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

[0047] The push rod 4 is a piston push rod. On the one hand, it moves relative to the piston cylinder 3 under the work of the actuating air source 14, and at the same time plays a role in installing and positioning the piston cylinder 3 and the connecting bolt 1.

[0048] The housing 5 is the connection inlet and working channel of the actuating air source 14, and also serves as a guide support and positioning for the movement of the piston cylinder 3. The interface of the actuating air source can be perpendicular or parallel to the product axis. If it is perpendicular, the installation space is small and the unlocking impact is small, while if it is parallel, the unlocking efficiency is high and the thrust force is large. The piston cylinder 3 is arranged inside the housing 5.

[0049] The base 6 is the axial mounting positioning surface of the split nut 2 and the sliding surface and guide positioning structure during the expansion process. The base 6 is connected to the housing 5 through an internal thread. At the same time, the base 6 contacts the inclined plane of the split nut 2 through the inclined plane at the lower end, and the mechanism is completely enclosed inside it.

[0050] The connecting nut 7 realizes the structural connection between the connecting bolt 1 and the second connected member 16 .

[0051] The pressure ring 8 is connected to the connected member 15 by means of the flange of the base 6 and the pressure ring bolts 13 .

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

[0053] The sealing ring 10, the sealing ring 11 and the sealing ring 12 are sealing elements between the actuating air source 14 and the housing 5, the ejection rod 4 and the piston cylinder 3, and the piston cylinder 3 and the housing 5 respectively, wherein the sealing ring 10 is a static seal, and the sealing ring 11 and the sealing ring 12 are dynamic seals.

[0054] The pressure ring bolt 13 is a structural connecting element between the pressure ring 8 and the connected part 15.

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

[0056] The connection working principle is that the connection bolt 1 passes through a stud with a flange, and one end thereof realizes threaded connection capability through a mechanism composed of a split nut 2, a piston cylinder 3, and a base 6. The connection bolt 1 applies installation torque to the base 6 and other mechanisms through the flange. The other end of the connection bolt 1 realizes structural connection with the connected part 2 16 through a connection nut 7.

[0057] The unlocking working principle is that the working high-pressure combustion gas of the actuating gas source 14 enters the piston cylinder 3 and the push rod 4 through the gas channel of the shell 5. The push rod 4 is temporarily kept stationary due to the positioning of the connecting bolt 1, and the piston cylinder 3 overcomes the resistance generated by the spring 9 and the connecting bolt 1 through the split nut 2 and moves under the action of the gas. When the piston cylinder 3 moves in the opposite direction to the positioning surface of the shell 5, the piston cylinder 3 releases the restraining support on the split nut 2. Under the combined action of the preload force of the connecting bolt 1 and the thrust of the push rod 4, the split nut 2 expands outward and falls into the north-shaped groove of the piston cylinder 3, and the split nut 2 releases the constraint on the connecting bolt 1.

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

[0059] like Figure 8 As shown, according to the different designs of the structural angles, the corresponding equations of the connection function and unlocking resistance of the connection push device are obtained, and the constraint relationship is as follows:

[0060] Taking the split nut 2 as a three-petal structure with an inclined plane of 12° 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] Where: F is the axial force of the connection generated by the threaded connection of the connecting bolt 1 on the split nut 2; F·R is the resultant radial force 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 on the split nut 2; F·R2 is the radial force generated by the threaded connection of the connecting bolt 1 on the split nut 2; N1~N3 are the forces generated by the three inclined planes of the base 6 on the split nut 2; ρ v is the friction angle, f is the thread friction coefficient.

[0066] Effect: This formula ensures a good matching relationship between structural connection and mechanism motion.

[0067] The structural mechanism of the present embodiment is compact. It is a device that integrates the functions of connection, unlocking and pushing. It is powered by a single energy source, has high energy utilization and is small in size. The present embodiment has high connection efficiency, adopts a split nut and connecting bolt structure, realizes load-bearing through connecting threads, and has high connection efficiency. The unlocking impact of the present embodiment is small, and a reverse-pull unlocking and a direct-push pushing mechanism are used to achieve unlocking and pushing in opposite directions. Unlocking and pushing act independently in steps through a single energy source. The thrust of the present embodiment is stable and adjustable. A direct-push variable-volume pushing mechanism is used. When an igniter with high energy density is used as an energy source, the thrust output by the variable-volume cavity is stable, and the working thrust can be adjusted according to the amount of igniter. After the device of the present embodiment is working, a closed cavity is formed, which has good sealing, no pollution to the outside, light structure and convenient installation.

[0068] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A connection and push device with integrated connection, unlocking and push functions, characterized in that include: A connecting bolt (1), a split nut (2), a piston cylinder (3), an ejection rod (4), a housing (5), a base (6), a connecting nut (7), a pressure ring (8), a spring (9), a pressure ring bolt (13) and an actuating air source (14); wherein: 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 connected member (16) through the connecting nut (7); The split nut (2) is arranged inside the piston cylinder (3), one end surface of the split nut (2) contacts the inner end surface (31) of the piston cylinder (3), and the other end surface of the split nut (2) contacts the lower end inclined plane of the base (6); The ejection rod (4) is arranged inside the piston cylinder (3); The piston cylinder (3) is arranged 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 connected part 1 (15) is sleeved on the outer surface of the base (6), and the pressure ring (8) is connected to the connected part 1 (15) through the pressure ring bolt (13); the connected part 1 (15) is located between the pressure ring (8) and the connected part 2 (16); The spring (9) is arranged inside the housing (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 housing (5); The actuating air source (14) is connected to the housing (5).

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

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

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

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

6. The connection and pushing device with integrated connection, unlocking and pushing functions according to claim 1 is characterized in that: The split-petal nut (2) is divided into a three-petal or four-petal structure, the inner wall of the split-petal nut (2) is provided with a connecting thread, and the outer wall of the split-petal nut (2) is provided with a supporting ring rib.

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

8. The connection and pushing device with integrated connection, unlocking and pushing functions according to claim 1 is characterized in that: The included 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 connection and pushing device with integrated connection, unlocking and pushing functions according to claim 1, characterized in that: The interface of the actuating air source (14) is perpendicular to the central axis of the shell (5).

10. The connection and pushing device with integrated connection, unlocking and pushing functions according to claim 1, characterized in that: The working high-pressure combustion gas generated by the actuating gas source (14) enters the piston cylinder (3) and the push rod (4) through the gas passage of the shell (5). The push rod (4) is temporarily kept stationary due to the positioning of the connecting bolt (1), and the piston cylinder (3) overcomes the resistance generated by the spring (9) and the connecting bolt (1) through the split nut (2) and moves under the action of the gas. When the piston cylinder (3) moves in the opposite direction to the positioning surface of the shell (5), the piston cylinder (3) releases the restraining support on 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) expands outward and falls into the north-shaped groove of the piston cylinder (3), and the split nut (2) releases the restraint on 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 to perform work, thereby achieving continuous work of the variable volume chamber, and finally achieving the pushing and separation of the connected part 1 (15) and the connected part 2 (16).

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