Double-section sleeve pushing and punching device

Abstract

The utility model belongs to aerospace propulsion technical field, specifically discloses a kind of double-section sleeve push-pull device. Including inner tube and the two-stage sleeve of being sleeved in the outer side of inner tube;The main shaft is arranged in the center of inner tube along the axial direction, and there is first spring between main shaft and two-stage sleeve, and the outer side of two-stage sleeve is sleeved with primary sleeve, and second spring is arranged between main shaft and primary sleeve;One end of main shaft is provided with explosive bolt, as the limiting function spare of overall structure, responsible for the unfolding of overall structure, limiting ring is arranged on explosive bolt, and the end of primary sleeve is abutted with limiting ring.The utility model successively with two-stage sleeve and primary sleeve are sleeved in the outer side of inner tube, and main shaft and two-stage sleeve are unfolded by compressed first spring under the action of explosive bolt, and two-stage sleeve and primary sleeve are unfolded by compressed second spring, provide push-pull force for external equipment, can be repeatedly used, and safety is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to aerospace propulsion technical field, especially relates to a double section sleeve push and punch device. BACKGROUND

[0002] In rocket technology, some actuating mechanisms are usually involved to meet the attitude adjustment, stage separation and vector control of rockets in flight process. The commonly used actuating mechanisms include servo motor actuator, hydraulic oil source actuator and gas actuator. The servo motor and hydraulic oil source actuator can realize relatively accurate position control, including actuating frequency, actuating stroke and actuating form, but the structure is usually complex, the mass is large and the actuating stroke is limited due to the carrying of the motor and oil source. The gas actuator has simple structure, light mass and instant large push and punch force, and is simple to use, but needs propellant, is complex in design and is a disposable product, which has certain safety hazards. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the defects in the prior art and provides a double section sleeve push and punch device.

[0004] The utility model provides a double section sleeve push and punch device, which comprises an inner cylinder and a secondary sleeve sleeved outside the inner cylinder.

[0005] The inner cylinder is provided with a main shaft in the center along the axial direction, a first annular space is formed between the main shaft and the secondary sleeve, a first spring is arranged in the first annular space, one end of the first spring is connected with the inner wall of the inner cylinder, and the other end of the first spring is in abutment with the secondary sleeve.

[0006] A primary sleeve is sleeved outside the secondary sleeve, a second annular space is formed between the main shaft and the primary sleeve, a second spring is arranged in the second annular space, one end of the second spring is connected with the secondary sleeve, and the other end of the second spring is in abutment with the primary sleeve.

[0007] One end of the main shaft is provided with an explosion bolt, a limiting ring is arranged on the explosion bolt, and the limiting ring is in abutment with the end portion of the primary sleeve.

[0008] The initial state of the first spring and the second spring is a compressed state, the outer diameter of the inner cylinder is adapted to the inner diameter of the secondary sleeve, and the outer diameter of the secondary sleeve is adapted to the inner diameter of the primary sleeve, so that the inner cylinder and the secondary sleeve are tightly fitted, and the secondary sleeve and the primary sleeve are tightly fitted.

[0009] Further, a limiting inner ring is arranged inside the secondary sleeve, and the limiting inner ring is integrally formed with the secondary sleeve.

[0010] The limiting inner ring is in sliding connection with the main shaft, and a first hollow annular ring is formed between the limiting inner ring and the secondary sleeve, and the end of the inner cylinder extends to the inside of the first hollow annular ring.

[0011] One end of the first spring is connected with the top inner wall of the inner cylinder, and the other end of the first spring is in abutment with the top of the limiting inner ring.

[0012] Further, the primary sleeve is internally provided with a limiting base, and the limiting base is integrally formed with the primary sleeve.

[0013] The top of the limiting base is in abutment with the bottom of the main shaft, and a second hollow annular ring is formed between the limiting base and the primary sleeve, and the bottom of the secondary sleeve extends to the inside of the second hollow annular ring.

[0014] One end of the second spring is in abutment with the limiting inner ring, and the other end of the second spring is in abutment with the top of the limiting base.

[0015] Further, the limiting base is in a circular ring structure, and the limiting base is coaxially arranged with the main shaft.

[0016] The bottom of the main shaft is provided with a blind hole, and an internal thread is formed on the inner wall of the blind hole, and the explosion bolt is in threaded connection with the main shaft.

[0017] Further, the limiting ring is in abutment with the limiting base.

[0018] Further, the main shaft is provided with a first mounting shaft at the end away from the explosion bolt, the secondary sleeve is provided with a second mounting shaft on the side wall, and the primary sleeve is provided with a third mounting shaft on the side wall, and the first mounting shaft, the second mounting shaft and the third mounting shaft are respectively used for connecting external equipment to drive the external equipment to realize separation.

[0019] Further, the first mounting shaft, the second mounting shaft and the third mounting shaft are located on the same axis.

[0020] Further, the primary sleeve is provided with a hollow groove, and the width of the hollow groove is adapted to the diameter of the second mounting shaft, so that the second mounting shaft is located inside the hollow groove when the pushing and punching device is in the folded state.

[0021] Further, the side wall of the secondary sleeve and the inner cylinder is provided with an exhaust hole.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] The utility model discloses a first sleeve and a second sleeve are successively sleeved on the outside of the inner cylinder, and the main shaft and the second sleeve are driven to unfold through the compressed first spring under the action of the explosion bolt, the second sleeve and the first sleeve are driven to unfold through the compressed second spring, and the external equipment is provided with push force, can be repeatedly used for many times, and is high in safety. BRIEF DESCRIPTION OF DRAWINGS

[0024] The following drawings only make the utility model illustrative and explanatory, and do not use for limiting the range of the utility model, wherein:

[0025] Figure 1 The utility model structure schematic diagram;

[0026] Figure 2 The utility model internal structure schematic diagram;

[0027] Figure 3 The utility model unfolded state schematic diagram;

[0028] In the drawing: 1, first sleeve;2, second sleeve;3, inner cylinder;4, main shaft;5, first mounting shaft;6, second mounting shaft;7, third mounting shaft;8, explosion bolt;9, internal thread;10, limit inner ring;11, limit base;12, first spring;13, second spring;14, hollow slot;15, exhaust hole. DETAILED DESCRIPTION

[0029] In order to make the utility model's purpose, technical scheme, design method and advantage more clear and obvious, the following is further detailed to the utility model through specific embodiment by the attached drawing. It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0030] As Figure 1 And Figure 2The utility model provides a kind of double sleeve push and punch device, including inner tube 3 and the sleeve of two sleeve 2 in the outer side of the inner tube 3;Main shaft 4 is provided with in the center of inner tube 3 along the axial direction, first annular region is formed between the main shaft 4 and two sleeve 2, first spring 12 is provided in first annular region, one end of first spring 12 is connected with the inner wall of the inner tube 3, the other end of first spring 12 is abutted with two sleeve 2;The outer side of two sleeve 2 is equipped with one sleeve 1, second annular region is formed between the main shaft 4 and one sleeve 1, second spring 13 is provided in second annular region, one end of second spring 13 is connected with two sleeve 2, the other end of second spring 13 is abutted with one sleeve 1;The initial state of first spring 12 and second spring 13 is compression state, the outer diameter of the inner tube 3 is adapted to the inner diameter of two sleeve 2, the outer diameter of two sleeve 2 is adapted to the inner diameter of one sleeve 1, so that the inner tube 3 is closely fitted with two sleeve 2, two sleeve 2 and one sleeve 1 are closely fitted;Explosion bolt 8 is provided with in one end of main shaft 4, limit ring is provided on explosion bolt 8, the limit ring is abutted with the end of one sleeve 1. Wherein, explosion bolt 8 includes wiring socket and explosion bolt body and internal ignition powder, limit ring is installed on explosion bolt body, as the limit function part of overall structure, responsible for the deployment of overall structure, explosion bolt 8 is initiated by electric signal, the whole structure loses limit after explosion bolt 8 is initiated, realizes the deployment of overall structure, and the deployment state is as shown in Figure 3 As shown.

[0031] In the above, the inside of two sleeve 2 is provided with limit inner ring 10, the limit inner ring 10 is integrally formed with two sleeve 2;Wherein, limit inner ring 10 is slidably connected with the main shaft 4, and a first hollow annular ring is formed between the limit inner ring 10 and the two sleeve 2, the end of the inner tube 3 extends to the inside of the first hollow annular ring, and is in close contact with the side wall of the first hollow annular ring;One end of first spring 12 is connected with the top inner wall of the inner tube 3, and the other end of first spring 12 is abutted with the top of limit inner ring 10. Limit base 11 is provided in one sleeve 1, the limit base 11 is integrally formed with one sleeve 1;The top of limit base 11 is abutted with the bottom of main shaft 4, and a second hollow annular ring is formed between the limit base 11 and the one sleeve 1, the bottom of two sleeve 2 extends to the inside of the second hollow annular ring;One end of second spring 13 is abutted with the limit inner ring 10, and the other end of second spring 13 is abutted with the top of limit base 11. Limit base 11 is a circular ring structure, and the limit base 11 is coaxially arranged with the main shaft 4;A blind hole is formed in the bottom of main shaft 4, and an internal thread 9 is formed in the inner wall of the blind hole, the explosion bolt 8 is threadedly connected with the main shaft 4, and the limit ring is abutted with the limit base 11.

[0032] In the embodiment, the inner tube 3, the primary sleeve 1 and the secondary sleeve 2 are deployed to drive the external equipment to deploy, and therefore the first mounting shaft 5 is arranged at the end of the main shaft 4 away from the explosive bolt 8, the second mounting shaft 6 is arranged on the side wall of the secondary sleeve 2, and the third mounting shaft 7 is arranged on the side wall of the primary sleeve 1, and the first mounting shaft 5, the second mounting shaft 6 and the third mounting shaft 7 are respectively used to connect the external equipment to drive the external equipment to separate, wherein the first mounting shaft 5, the second mounting shaft 6 and the third mounting shaft 7 are located on the same axis.

[0033] In order to realize the installation of the second mounting shaft 6, the hollow groove 14 is arranged on the primary sleeve 1, and the width of the hollow groove 14 is adapted to the diameter of the second mounting shaft 6, so that the second mounting shaft 6 is located inside the hollow groove 14 when the push-punch device is in the folding state.

[0034] In order to ensure the pressure balance inside and outside the inner tube 3, the primary sleeve 1 and the secondary sleeve 2, the exhaust hole 15 is arranged on the side wall of the secondary sleeve 2 and the inner tube 3.

[0035] The above has described the embodiments of the utility model, and the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical application or improvement of the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A two-section sleeve ramming device, characterized in that, The inner cylinder (3) and the secondary sleeve (2) are sleeved outside the inner cylinder (3); The inner cylinder (3) is provided with a main shaft (4) in the center along the axial direction, a first annular space is formed between the main shaft (4) and the secondary sleeve (2), a first spring (12) is arranged in the first annular space, one end of the first spring (12) is connected with the inner wall of the inner cylinder (3), and the other end of the first spring (12) is in abutment with the secondary sleeve (2); The outer side of the secondary sleeve (2) is sleeved with a primary sleeve (1), a second annular space is formed between the main shaft (4) and the primary sleeve (1), a second spring (13) is arranged in the second annular space, one end of the second spring (13) is connected with the secondary sleeve (2), and the other end of the second spring (13) is in abutment with the primary sleeve (1); One end of the main shaft (4) is provided with an explosion bolt (8), a limiting ring is arranged on the explosion bolt (8), and the limiting ring is in abutment with the end of the primary sleeve (1); The initial state of the first spring (12) and the second spring (13) is a compressed state, the outer diameter of the inner cylinder (3) is adapted to the inner diameter of the secondary sleeve (2), and the outer diameter of the secondary sleeve (2) is adapted to the inner diameter of the primary sleeve (1), so that the inner cylinder (3) and the secondary sleeve (2) are tightly fitted, and the secondary sleeve (2) and the primary sleeve (1) are tightly fitted.

2. A two-section sleeve ramming device according to claim 1, characterized in that The secondary sleeve (2) is internally provided with a limiting inner ring (10), and the limiting inner ring (10) is integrally formed with the secondary sleeve (2); The limiting inner ring (10) is in sliding connection with the main shaft (4), and a first hollow annular ring is formed between the limiting inner ring (10) and the secondary sleeve (2), and the end of the inner cylinder (3) extends into the first hollow annular ring; One end of the first spring (12) is connected with the top inner wall of the inner cylinder (3), and the other end of the first spring (12) is in abutment with the top of the limiting inner ring (10).

3. A two-section sleeve ramming device according to claim 2, characterized in that The primary sleeve (1) is internally provided with a limiting base (11), and the limiting base (11) is integrally formed with the primary sleeve (1); The top of the limiting base (11) is in abutment with the bottom of the main shaft (4), and a second hollow annular ring is formed between the limiting base (11) and the primary sleeve (1), and the bottom of the secondary sleeve (2) extends into the second hollow annular ring; One end of the second spring (13) is in abutment with the limiting inner ring (10), and the other end of the second spring (13) is in abutment with the top of the limiting base (11).

4. A two-section sleeve ramming device according to claim 3, characterized in that The limiting base (11) is a circular ring structure, and the limiting base (11) is coaxially arranged with the main shaft (4); A blind hole is formed in the bottom of the main shaft (4), an internal thread (9) is formed in the inner wall of the blind hole, and the explosion bolt (8) is in threaded connection with the main shaft (4).

5. A two-section sleeve ramming device according to claim 4, characterized in that The limiting ring is in abutment with the limiting base (11).

6. The two-section sleeve ramming device according to claim 1, characterized in that, The first mounting shaft (5) is arranged at one end of the main shaft (4) away from the explosive bolt (8), the second mounting shaft (6) is arranged on the side wall of the secondary sleeve (2), the third mounting shaft (7) is arranged on the side wall of the primary sleeve (1), and the first mounting shaft (5), the second mounting shaft (6) and the third mounting shaft (7) are respectively used for connecting external equipment to drive the external equipment to realize separation.

7. A two-section sleeve ramming device according to claim 6, characterized in that The first mounting shaft (5), the second mounting shaft (6) and the third mounting shaft (7) are located on the same axis.

8. A two-section sleeve ramming device according to claim 7, characterized in that The primary sleeve (1) is provided with a hollow groove (14), and the width of the hollow groove (14) is adapted to the diameter of the second mounting shaft (6), so that the second mounting shaft (6) is located inside the hollow groove (14) when the pushing and punching device is in the folding state.

9. The two-section sleeve ramming device according to claim 1, characterized in that, The side walls of the secondary sleeve (2) and the inner cylinder (3) are provided with exhaust holes (15).

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