Reusable pneumatic unlocking and separating device

Abstract

The invention relates to the technical field of pneumatic unlocking and separating, and discloses a reusable pneumatic unlocking and separating device which comprises a bending fixing plate, a fixing end assembly is arranged on the bending fixing plate, and a separable separating end assembly is connected to the fixing end assembly in a sleeving mode. The fixed end assembly comprises a fixed end sleeve, a lock shaft and a rubber ring, and the separated end assembly comprises a separated end inner sleeve and a pneumatic piston. Compared with the prior art, the pneumatic unlocking device has the advantages that the core structure of the lock shaft, the elastic valve and the pneumatic piston is adopted, the number of complex parts of a traditional pneumatic unlocking device is reduced, the device structure is simplified, the elastic valve narrowing inwards in the radial direction on the rubber ring can effectively prevent dust, oil dirt and other pollutants from invading the locking mechanism, and the locking effect is good. The pneumatic piston is adopted to directly push the lock shaft to reset, the problem of metal fatigue does not exist, the service life of the device is prolonged, the device can be reused after being unlocked and the pin shaft is replaced, and the single-time use cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of pneumatic unlocking and separation technology, specifically to a reusable pneumatic unlocking and separation device. Background Technology

[0002] Pneumatic unlocking is a technology that uses compressed air as a power source to separate devices through components such as cylinders and valves. In practical applications, compared to traditional pyrotechnic or mechanical locking and unlocking technologies, pneumatic unlocking offers advantages such as high controllability, recyclability, and zero pollution.

[0003] Traditional split nuts rely on the engagement of bolts to achieve locking and unlocking. Their split structure can lead to structural defects such as locking failure, insufficient shear resistance, and thread seizing due to excessive radial clearance.

[0004] Current pneumatic unlocking devices are generally complex in structure, which leads to problems such as asynchronous unlocking, unlocking jamming, or even complete failure in polluted environments. At the same time, for some pneumatic unlocking devices that rely on spring reset, spring fatigue can cause problems such as incomplete reset or difficulty in reset. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing pneumatic unlocking devices are complex in structure and difficult to reuse. The present invention provides a reusable pneumatic unlocking and separation device.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a reusable pneumatic unlocking and separation device, including a bending and fixing plate, a fixing end assembly provided on the bending and fixing plate, and a separable separation end assembly sleeved on the fixing end assembly. The fixing end assembly includes a fixing end sleeve, a locking shaft and a rubber ring, and the separation end assembly includes a separation end inner sleeve and a pneumatic piston.

[0007] The locking shaft is slidably sleeved inside the fixed end sleeve, and the rubber ring is sleeved on the end face of the fixed end sleeve. One end of the inner sleeve of the separating end is provided with an annular groove, and the pneumatic piston is slidably sleeved inside the inner sleeve of the separating end.

[0008] When the separating end assembly is connected to the fixed end assembly, the inner sleeve of the separating end is fitted onto the outside of the fixed end sleeve. The locking shaft extends into the separating end assembly and pushes the rubber ring outward and into the annular groove. When the separating end assembly is separated from the fixed end assembly, compressed air is supplied from the outside to push the pneumatic piston back into the fixed end sleeve, causing the rubber ring to retract inward and leave the annular groove, and pushing the entire fixed end assembly away from the separating end assembly.

[0009] Furthermore, the rubber ring is provided with an elastic valve that narrows radially inward, and the end face of the rubber ring is provided with a concave annular tenon groove.

[0010] Furthermore, the fixed end sleeve is provided with an annular tenon that matches the annular tenon groove, and the fixed end sleeve is provided with a limiting ring two that matches the locking shaft.

[0011] Furthermore, the locking shaft is provided with a first abutment post, a separation abutment surface is provided on the side of the first abutment post near the end of the locking shaft, and a second abutment post is provided on the other end. The diameter of the second abutment post is larger than that of the first abutment post, and a conical surface is provided between the second abutment post and the first abutment post for transition. When the second abutment post comes into contact with the elastic valve, it pushes it radially outward to expand.

[0012] Furthermore, the end of the locking shaft away from the separation and abutment surface is provided with a radially extending pin hole one, and the fixed end sleeve is provided with a radially extending pin hole two. When the separation end assembly and the fixed end assembly are docked, the pin hole one and the pin hole two are aligned, and a pin is inserted inside. When the pin hole one and the pin hole two are aligned, the abutment post two abuts against the elastic valve.

[0013] Furthermore, the inner sleeve of the separating end is provided with an outer sleeve of the separating end, and the end of the outer sleeve of the separating end is provided with a pin hole three that mates with pin hole one and pin hole two.

[0014] Furthermore, the inner sleeve of the separating end is provided with a limiting ring that cooperates with the pneumatic piston, and the end of the inner sleeve of the separating end is provided with an air supply connector.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The core structure of "locking shaft + elastic valve + pneumatic piston" reduces the number of complex parts in traditional pneumatic unlocking devices and simplifies the device structure.

[0017] The radially narrowing elastic valve on the rubber ring can effectively prevent dust, oil and other pollutants from entering the locking mechanism.

[0018] The device uses a pneumatic piston to directly push the lock shaft to reset, completely eliminating the traditional design that relies on spring reset. This eliminates the problem of metal fatigue and extends the lifespan of the device.

[0019] After the device is unlocked, it can be reused by replacing the pin, which greatly reduces the cost per use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure after the present invention is unlocked and separated.

[0022] Figure 3 This is an exploded structural diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the locking shaft structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the inner sleeve at the separating end of the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of the rubber ring of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the fixed end sleeve of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the outer sleeve of the separating end of the present invention.

[0028] Figure 9 This is a cross-sectional structural diagram of the present invention.

[0029] Figure 10 This is a schematic diagram of the unlocking process of this invention.

[0030] Figure 11 This is a schematic diagram of the separation process of the present invention.

[0031] As shown in the figure: 1. Bending and fixing plate, 2. Separating end assembly, 3. Fixing end assembly, 4. Fixing end sleeve, 5. Locking shaft, 6. Rubber ring, 7. Fixing end locking nut, 8. Washer, 9. Pin, 10. Separating end inner sleeve, 11. Separating end outer sleeve, 12. Separating end locking nut, 13. Pneumatic piston, 14. Sealing ring, 15. Air supply connector, 16. Separating end locking nut sleeve, 17. Pin hole one, 18. Clamping post one, 19. Clamping post two, 20. Separating clamping surface, 21. Annular groove, 22. Annular tenon groove, 23. Elastic valve, 24. Pin hole two, 25. Annular tenon, 26. Pin hole three, 27. Limiting ring one, 28. Limiting ring two. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 5A reusable pneumatic unlocking and separating device includes a bending and fixing plate 1, a fixed end assembly 3 on the bending and fixing plate 1, and a separable separating end assembly 2 sleeved on the fixed end assembly 3. The fixed end assembly 3 includes a fixed end sleeve 4, a locking shaft 5, and a rubber ring 6. The separating end assembly 2 includes a separating end inner sleeve 10 and a pneumatic piston 13. The locking shaft 5 is slidably sleeved inside the fixed end sleeve 4, and the rubber ring 6 is sleeved on the end face of the fixed end sleeve 4. An annular groove 21 is provided inside one end of the separating end inner sleeve 10. The pneumatic piston 13 is slidably sleeved inside the separating end inner sleeve 10, and multiple sealing rings 14 are sleeved on the end of the pneumatic piston 13.

[0034] Combined with appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 7 and attached Figure 8 The fixed end sleeve 4 has threads at its root and is fixed to the side of the bent fixed plate by the fixed end locking nut 7 and the washer 8. The outer side of the separating end inner sleeve 10 is provided with a separating end outer sleeve 11 and an air supply connector 15 at its end. The inner side of the separating end inner sleeve 10 is provided with a limiting ring 27 that cooperates with the pneumatic piston 13. Both ends of the separating end inner sleeve 10 are provided with threads. The threads of the separating end outer sleeve 11 and one section are connected by the separating end locking nut 12. The threads of the air supply connector 15 and the other end are connected by the separating end locking nut sleeve 16.

[0035] When the separating end assembly 2 is connected to the fixed end assembly 3, the inner sleeve 10 of the separating end is sleeved on the outside of the fixed end sleeve 4, the locking shaft 5 extends into the separating end assembly 2, and pushes the rubber ring 6 outward and into the annular groove 21. When the separating end assembly 2 is separated from the fixed end assembly 3, compressed air is provided from the outside to push the pneumatic piston 13 to push the locking shaft 5 back into the fixed end sleeve 4, causing the rubber ring 6 to retract inward and leave the annular groove 21, and pushing the fixed end assembly 3 away from the separating end assembly 2.

[0036] Combined with appendix Figure 6 Appendix Figure 7 and attached Figure 9 The rubber ring 6 is provided with an elastic valve 23 that narrows radially inward. The end face of the rubber ring 6 is provided with a concave annular tenon groove 22. The end of the fixed end sleeve 4 is provided with an annular tenon 25 that matches the annular tenon groove 22. The inside of the fixed end sleeve 4 is provided with a limiting ring 28 that matches the locking shaft 5. The locking shaft 5 is provided with a first abutting post 18. The first abutting post 18 is provided with a separation abutting surface 20 on one side near the end of the locking shaft 5, and a second abutting post 19 on the other end. The diameter of the second abutting post 19 is larger than that of the first abutting post 18. A conical surface is provided between the second abutting post 19 and the first abutting post 18 for transition. When the second abutting post 19 comes into close contact with the elastic valve 23, it pushes it radially outward to expand. After the elastic valve 23 expands, it is locked into the annular tenon groove 21.

[0037] Combined with appendix Figure 3 Appendix Figure 5 Appendix Figure 7 and attached Figure 9 The locking shaft 5 has a radially extending pin hole 17 at one end away from the separation and abutment surface 20, and the fixed end sleeve 4 has a radially extending pin hole 24. When the separation end assembly 2 and the fixed end assembly 3 are connected, the pin hole 17 and the pin hole 24 are aligned, and the pin 9 is inserted inside. When the pin hole 17 and the pin hole 24 are aligned, the abutment post 29 abuts against the elastic valve 23. The end of the separation end outer sleeve 11 has a pin hole 3 26 that matches the pin hole 17 and the pin hole 24.

[0038] Combined with appendix Figure 9 After the separating end assembly 2 and the fixed end assembly 3 are connected, only the elastic valve 23 and the annular groove 21 are locked together. The rubber ring 6 is fixed by the friction generated by the pressing column 2 19. The overall diameter of the pin 9 is slightly smaller than the diameter of the pin hole 17 and the pin hole 24. It is simply fixed by bending at both ends. The bending range of the end of the pin 9 is small. It can be manually inserted into the pin hole 17 and the pin hole 24 through the pin hole 3 26 to limit the locking shaft 5. It does not participate in the force of the device. Correspondingly, the length of the pneumatic piston 13 is designed so that it cannot be pressed against the separating pressing surface 20 without external force after docking.

[0039] Combined with appendix Figure 10 and attached Figure 11 With the orientation of the attached drawing as a reference, when it is necessary to separate the separating end assembly 2 and the fixed end assembly 3, compressed air is injected into the inner sleeve 10 of the separating end through the air supply connector 15, causing the pneumatic piston 13 to move to the left and press against the separating mating surface 20, causing a slight misalignment between the first pin hole 17 and the second pin hole 24. As the pressure of the compressed air injected into the inner sleeve 10 of the separating end continues to increase, the pin 9 is sheared and broken, causing the pneumatic piston 13 to push the locking shaft 5 to continue moving to the left, causing the first mating post 18 to contact the elastic valve 23. Since the diameter of the first mating post 18 is smaller, the elastic valve 23 retracts inward and cannot be locked into the annular groove 21, thus releasing the lock between the separating end assembly 2 and the fixed end assembly 3. At the same time, as the pneumatic piston 13 continues to push the locking shaft 5 to move to the left, until the second limiting ring 28 blocks the locking shaft 5 from moving further, in this state, the pneumatic piston 13 pushes the entire fixed end assembly 3 away from the separating end assembly 2 to achieve the separation effect.

[0040] The present invention and its embodiments have been described above. This description is not restrictive, and the actual structure is not limited thereto. In conclusion, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the scope of protection of this invention.

Claims

1. A reusable pneumatic unlocking and separating device, comprising a bending fixing plate (1), characterized in that: The bending fixing plate (1) is provided with a fixing end assembly (3), and a separable separating end assembly (2) is sleeved on the fixing end assembly (3). The fixing end assembly (3) includes a fixing end sleeve (4), a locking shaft (5) and a rubber ring (6). The separating end assembly (2) includes a separating end inner sleeve (10) and a pneumatic piston (13). The locking shaft (5) is slidably sleeved inside the fixed end sleeve (4), the rubber ring (6) is sleeved on the end face of the fixed end sleeve (4), and an annular groove (21) is provided inside one end of the separating end inner sleeve (10). The pneumatic piston (13) is slidably sleeved inside the separating end inner sleeve (10). When the separating end assembly (2) is connected to the fixed end assembly (3), the inner sleeve (10) of the separating end is sleeved on the outside of the fixed end sleeve (4), the locking shaft (5) extends into the separating end assembly (2), and pushes the rubber ring (6) outward and into the annular groove (21). When the separating end assembly (2) is separated from the fixed end assembly (3), compressed air is provided from the outside to push the pneumatic piston (13) to drive the locking shaft (5) back into the fixed end sleeve (4), causing the rubber ring (6) to retract inward and leave the annular groove (21), and pushing the fixed end assembly (3) away from the separating end assembly (2).

2. The reusable pneumatic unlocking and separation device according to claim 1, characterized in that: The rubber ring (6) is provided with an elastic valve (23) that narrows radially inward, and the end face of the rubber ring (6) is provided with an inwardly concave annular ferrule groove (22).

3. The reusable pneumatic unlocking and separation device according to claim 2, characterized in that: The fixed end sleeve (4) is provided with an annular clasp (25) that matches the annular clasp groove (22), and the fixed end sleeve (4) is provided with a limiting ring (28) that matches the locking shaft (5).

4. The reusable pneumatic unlocking and separation device according to claim 2, characterized in that: The locking shaft (5) is provided with a first abutment post (18). The first abutment post (18) has a separation abutment surface (20) on one side near the end of the locking shaft (5), and a second abutment post (19) on the other end. The diameter of the second abutment post (19) is larger than that of the first abutment post (18). A conical surface is provided between the second abutment post (19) and the first abutment post (18) for transition. When the second abutment post (19) comes into contact with the elastic valve (23), it pushes it radially outward to expand.

5. A reusable pneumatic unlocking and separation device according to claim 4, characterized in that: The locking shaft (5) has a radially extending pin hole one (17) at one end away from the separation abutment surface (20), and a radially extending pin hole two (24) is provided on the fixed end sleeve (4). When the separation end assembly (2) and the fixed end assembly (3) are connected, the pin hole one (17) and the pin hole two (24) are aligned, and the pin (9) is inserted inside. When the pin hole one (17) and the pin hole two (24) are aligned, the abutment post two (19) abuts against the elastic valve (23).

6. A reusable pneumatic unlocking and separation device according to claim 5, characterized in that: The inner sleeve (10) of the separating end is provided with an outer sleeve (11) of the separating end, and the end of the outer sleeve (11) of the separating end is provided with a pin hole three (26) that matches the first pin hole (17) and the second pin hole (24).

7. The reusable pneumatic unlocking and separation device according to claim 1, characterized in that: The inner sleeve (10) of the separating end is provided with a limiting ring (27) that cooperates with the pneumatic piston (13), and the end of the inner sleeve (10) of the separating end is provided with an air supply connector (15).

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