A release device for release by high pressure gas

Abstract

An unlocking device unlocked by high-pressure gas, comprising a shell, a piston cavity, a piston end cover, a locking pin, a manual locking pin and a spring, the core innovation lies in the double sealing cooperation structure and the closed-loop control logic: adopting end face static sealing + piston dynamic sealing design, matched with fluorine rubber ring and precise gap to prevent high-pressure gas leakage; the control logic realizes the closed loop of unlocking-keeping-reset, and the unlocking is driven by high-pressure gas, the mechanical limiting realizes the non-electric and non-powered unlocking keeping, and the manual pressing combined with spring reset realizes the locking, without additional power source; the device is compact in structure, safe in operation and reliable in performance, solves the problems of complex structure, large size, unreliable sealing and control of existing devices, can realize manual locking and high-pressure quick unlocking of target components, and is suitable for compact installation space and full-scene demand of columnar equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of unlocking devices, and particularly relates to a mechanical unlocking device that realizes unlocking through high-pressure gas and locking manually. Background Art

[0002] During the daily transportation or storage of a certain type of columnar equipment, it is necessary to manually lock the target component through a locking pin from the outside of the equipment to restrict the freedom of movement of the component in a certain plane; prevent equipment damage or safety hazards caused by component shaking and displacement during transportation and storage; and when the equipment enters the use stage, it is necessary to realize the rapid unlocking of the target component through high-pressure gas to ensure that the component can quickly restore its movement function and ensure the normal operation of the equipment. Therefore, the dual functions of "manual locking + high-pressure gas unlocking", as well as the usage requirements of being structurally compact, operationally safe, and performance reliable, have become the core requirements for the unlocking device supporting this type of columnar equipment.

[0003] Currently, existing unlocking devices are difficult to simultaneously meet the functional requirements and installation space limitations of this type of columnar equipment, and generally have the following core problems: First, the structure is complex and the volume is relatively large. Due to the limited installation space inside and outside the columnar equipment, the redundant structure of the existing device cannot adapt to its compact installation requirements, and it is easy to interfere with other components of the equipment, affecting the overall layout of the equipment; Second, the operation safety is insufficient. Some devices need to operate deep inside the equipment when manually locking, increasing the operation difficulty of the operator, and there are potential hazards such as gas leakage and component malfunction during the high-pressure unlocking process, posing safety risks; Third, the reliability is relatively low. The sealing structure design of the existing device is unreasonable, and gas leakage is likely to occur during high-pressure unlocking, resulting in insufficient unlocking power and unlocking delay. The connection logic between manual locking and high-pressure unlocking is not smooth, and problems such as insecure locking and inability to stably maintain the unlocked state after unlocking are likely to occur, and it cannot meet the full-scenario reliability requirements of equipment transportation, storage, and use.

[0004] Therefore, there is an urgent need to design an unlocking device with a compact structure, safe operation, and reliable performance to adapt to the usage scenarios of this type of equipment. Summary of the Invention[[ID=十七]]

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an unlocking device that unlocks through high-pressure gas. The core lies in optimizing the sealing and mating structure and designing a precise control logic to achieve rapid unlocking driven by high-pressure gas, unlocking retention without electricity and passive components, manual precise reset, while enhancing the sealing reliability, avoiding high-pressure gas leakage, ensuring the long-term stable operation of the device, and particularly adapting to the full-scenario requirements of a certain type of columnar equipment for transportation, storage, and use, and solving the problems of complex structure, large volume, insufficient safety, and reliability of existing devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an unlocking device that unlocks using high-pressure gas, comprising a housing, a piston cavity, a piston end cap, a locking pin, a manual locking pin, and a spring; The housing has a guide hole at its front end for the extension and retraction of the locking pin. The piston cavity is located inside the front end of the housing and is fixedly connected to the housing by a pin and screws. The piston cavity has a through guide hole, and the locking pin is slidably disposed in the guide hole. The upper end face of the piston cavity has a high-pressure gas inlet hole communicating with the guide hole. A sealing groove is provided at the front end of the guide hole, and a static sealing rubber ring is provided on the end face of the sealing groove. The piston end cap is fixedly disposed at the rear end of the piston cavity by screws, and the piston end cap has a through hole for the locking pin to pass through. The bottom of the housing behind the piston cavity has a mounting hole, and the manual locking pin is slidably disposed in the mounting hole, with the lower end of the manual locking pin extending out of the housing. The locking pin has a frustum-shaped piston in the middle, and a sealing groove is provided on the outer periphery of the piston. A dynamic sealing ring is provided in the sealing piston groove. The static sealing ring and the dynamic sealing ring on the end face form a sealed air chamber that communicates with the high-pressure gas inlet. A spring is connected to the lower rear end face of the piston. A trapezoidal boss is provided on the lower rear part of the spring. The rear end of the spring extends through the through hole of the piston end cover to the top of the manual locking pin. The spring is sleeved on the rear end of the locking pin, with its front end abutting against the piston part of the locking pin and its rear end abutting against the end face of the piston end cap. The control logic of the unlocking device includes unlocking control logic, unlocking hold control logic, and lock reset control logic, which work together to achieve closed-loop control. Unlocking control logic: External high-pressure gas enters the sealed gas chamber through the high-pressure gas inlet of the piston chamber. The gas pressure acts on the piston part of the locking pin, overcomes the elastic resistance of the spring, and pushes the locking pin to move backward along the guide hole of the piston chamber, which in turn drives the spring to move backward. Unlock and hold control logic: When the locking pin moves backward to the preset position, the trapezoidal protrusion on the spring passes over the edge of the through hole of the piston end cover. The front end face of the trapezoidal protrusion and the rear end face of the piston end cover form a mechanical limit. Even if the high-pressure gas supply stops and the sealed air chamber is depressurized, the locking pin will remain in the retracted state. Locking and resetting control logic: In the unlocked and holding state, manually press the lower end of the manual locking pin. The manual locking pin slides upward along the mounting hole, and the push head pushes the spring plate to deform upward elastically, so that the trapezoidal boss on the spring plate disengages from the limiting engagement with the piston end cover. At this time, the spring force drives the locking pin to move forward along the guide hole until the front end of the locking pin extends out of the guide hole of the housing, realizing the locking and resetting of the device.

[0007] Furthermore, the manual locking pin is a cylindrical rod, including a rod body and a push head. The diameter of the rod body is smaller than that of the push head. The lower end of the rod body extends out of the housing. The upper surface of the push head is a plane, which is used to cooperate with the lower surface of the spring to push.

[0008] Furthermore, the gap between the piston portion of the locking pin and the guide hole of the piston cavity is 0.02-0.05mm.

[0009] Furthermore, the spring is made of spring steel, and the slope angle of the trapezoidal boss is 45°.

[0010] Furthermore, both the dynamic sealing ring and the end face static sealing ring are made of fluororubber.

[0011] The beneficial effects of this invention are: the locking pin can be popped out and locked by manually pressing the manual locking pin, and the locking pin can be retracted and unlocked by high-pressure gas, which perfectly matches the "storage locking + use unlocking" usage requirements of this type of equipment; The overall design is modular, with each component fastened together by screws and pins. It is compact and easy to install in confined spaces around the equipment. The unlocking action is driven by high-pressure gas, requiring no close-range manual operation; the locking action can be completed simply by pressing the manual locking pin, making it simple to operate and highly secure. The dual sealing structure of dynamic sealing ring and end face static sealing ring effectively ensures the sealing performance of the sealed cavity under high pressure gas, ensuring stable and reliable unlocking action; The trapezoidal protrusion on the locking pin spring forms a mechanical limit with the piston end cap, which can keep the locking pin in a stable position in the unlocked state and prevent accidental reset. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall assembly structure; Figure 2 This is a three-dimensional structural diagram of the locking pin; Figure 3 This is a schematic diagram of the mating structure of the piston chamber, piston end cap, and locking pin; Figure 4 It is a cross-sectional structural diagram of the piston cavity, piston end cap and locking pin assembly; Figure 5 This is a schematic diagram of the manual locking pin.

[0013] In the diagram: 1-housing, 2-piston cavity, 3-piston end cap, 4-locking pin, 5-manual locking pin, 6-spring. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to embodiments and specific implementation methods: Example 1 Figures 1-5 As shown, an unlocking device that unlocks using high-pressure gas includes a housing 1, a piston chamber 2, a piston end cap 3, a locking pin 4, a manual locking pin 5, and a spring 6. The housing 1 has a guide hole at its front end for the extension and retraction of the locking pin 4. The piston cavity 2 is located inside the front end of the housing 1 and is fixedly connected to the housing 1 by a pin and screws. The piston cavity 2 has a through guide hole, and the locking pin 4 is slidably disposed in the guide hole. The upper end face of the piston cavity 2 has a high-pressure gas inlet hole communicating with the guide hole. A sealing groove is provided at the front end of the guide hole, and a static sealing rubber ring is provided on the end face of the sealing groove. The piston end cap 3 is fixedly disposed at the rear end of the piston cavity 2 by screws. The piston end cap 3 has a through hole for the locking pin 4 to pass through. The bottom of the housing 1 behind the piston cavity 2 has a mounting hole, and the manual locking pin 5 is slidably disposed in the mounting hole, with the lower end of the manual locking pin 5 extending out of the housing 1. The locking pin 4 has a frustum-shaped piston in the middle, and a sealing groove is provided on the outer periphery of the piston. A dynamic sealing ring is provided in the sealing piston groove. The static sealing ring and the dynamic sealing ring on the end face form a sealed air chamber that communicates with the high-pressure gas inlet. A spring is connected to the lower rear end face of the piston. A trapezoidal boss is provided on the lower rear part of the spring. The rear end of the spring extends through the through hole of the piston end cover 3 to the top of the manual locking pin 5. The spring 6 is sleeved on the rear end rod of the locking pin 4, with its front end abutting against the piston part of the locking pin 4 and its rear end abutting against the end face of the piston end cap 3.

[0015] The manual locking pin 5 is a cylindrical rod, including a rod body and a push head. The diameter of the rod body is smaller than that of the push head. The lower end of the rod body extends out of the housing 1. The upper surface of the push head is a plane, which is used to cooperate with the lower surface of the spring to push.

[0016] The gap between the piston portion of the locking pin 4 and the guide hole of the piston cavity 2 is 0.02-0.05mm.

[0017] The spring is made of spring steel, and the slope angle of the trapezoidal boss is 45°.

[0018] Both the dynamic sealing ring and the end face static sealing ring are made of fluororubber.

[0019] Work process: 1. Unlocking process When unlocking is required, external high-pressure gas is introduced into the high-pressure gas inlet on the upper end face of the piston cavity 2. The pressure range is 0.8-1.2MPa. The high-pressure gas enters the sealed air chamber formed by the end face static sealing ring and the dynamic sealing ring through the high-pressure gas inlet. The gas pressure acts on the frustum piston part of the locking pin 4, generating a backward driving force. When the driving force is greater than the elastic resistance of the spring 6, it pushes the locking pin 4 to slide backward along the guide hole of the piston cavity 2, and simultaneously drives the rear end spring to move backward. At this time, the dynamic sealing ring slides synchronously with the locking pin 4, always fitting against the inner wall of the guide hole, and the end face static sealing ring maintains a static seal, ensuring that there is no leakage of high-pressure gas in the sealed air chamber and the driving force is stable.

[0020] 2. Unlocking and holding process When the locking pin 4 slides backward until the front end of the locking pin is completely retracted into the housing 1, the trapezoidal protrusion on the spring just passes the edge of the through hole of the piston end cover 3. The front end face of the trapezoidal protrusion fits tightly with the rear end face of the piston end cover 3, forming a mechanical limit. At this time, even if the high-pressure gas is stopped, the gas in the sealed gas chamber will naturally depressurize. Under the action of the mechanical limit, the locking pin 4 will remain in the retracted state, realizing powerless and passive unlocking and holding without the need to continuously consume high-pressure gas.

[0021] 3. Locking and Reset Process When the locked state needs to be restored, the operator manually presses the lower end of the manual locking pin 5. The manual locking pin 5 slides upward along the mounting hole at the bottom of the housing 1, and the push head pushes the spring plate to deform upward elastically, causing the trapezoidal boss on the spring plate to disengage from the limiting engagement with the piston end cover 3. At this time, the elastic restoring force of the spring 6 is released, driving the locking pin 4 to slide forward along the guide hole of the piston cavity 2 until the front end of the locking pin 4 extends out of the guide hole of the housing 1, realizing the locking reset of the device. When the manual locking pin 5 is released, the manual locking pin 5 resets under its own gravity, the spring plate returns to its original state, and waits for the next unlocking operation, completing one closed-loop control.

[0022] In this embodiment, the sealing ring is made of fluororubber, and the double sealing structure can operate continuously for 72 hours without gas leakage under high pressure gas environment of 0.8-1.2MPa, with stable sealing performance. The control logic runs smoothly, the unlock response time is ≤0.5s, and in the unlock holding state, there is no failure after 30 days of standing. The manual reset operation is convenient and there is no jamming phenomenon, which fully meets the use requirements of industrial equipment, especially suitable for the full-scenario requirements of a certain type of columnar equipment for transfer, storage and use.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An unlocking device that unlocks using high-pressure gas, characterized in that: Includes housing (1), piston chamber (2), piston end cap (3), locking pin (4), manual locking pin (5) and spring (6); The housing (1) has a guide hole at its front end for the extension and retraction of the locking pin (4). The piston cavity (2) is located inside the front end of the housing (1) and is fixedly connected to the housing (1) by a pin and screw. The piston cavity (2) has a guide hole that runs through the front and rear. The locking pin (4) is slidably located in the guide hole. The upper end face of the piston cavity (2) has a high-pressure gas inlet hole that communicates with the guide hole. A sealing groove is provided at the front end of the guide hole, and a static sealing ring is provided on the end face of the sealing groove. The piston end cap (3) is fixedly located at the rear end of the piston cavity (2) by screws. The piston end cap (3) has a through hole for the locking pin (4) to pass through. The bottom of the housing (1) behind the piston cavity (2) has an installation hole. The manual locking pin (5) is slidably located in the installation hole, and the lower end of the manual locking pin (5) extends out of the housing (1). The locking pin (4) is provided with a frustum-shaped piston part in the middle. A sealing groove is provided on the outer periphery of the piston part. A dynamic sealing ring is provided in the sealing piston groove. A sealed air chamber is formed between the static sealing ring and the dynamic sealing ring on the end face and the high-pressure gas inlet hole. A spring is connected to the lower part of the rear end face of the piston part. A trapezoidal boss is provided below the rear part of the spring. The rear end of the spring extends through the through hole of the piston end cover (3) to the top of the manual locking pin (5). The spring (6) is sleeved on the rear rod of the locking pin (4), with its front end abutting against the piston part of the locking pin (4) and its rear end abutting against the end face of the piston end cap (3); The control logic of the unlocking device includes unlocking control logic, unlocking holding control logic and locking reset control logic. The three work together to achieve closed-loop control: external high-pressure gas enters the sealed gas chamber through the high-pressure gas inlet, pushing the locking pin (4) to move backward and driving the spring to move. The trapezoidal protrusion on the spring passes over the edge of the through hole of the piston end cap (3) to form a mechanical limit, realizing unlocking and holding without electricity or power. Manually pressing the manual locking pin (5) can push the spring to deform. After the limit is released, the spring (6) drives the locking pin (4) to reset and achieve locking.

2. The unlocking device for unlocking via high-pressure gas according to claim 1, characterized in that, The manual locking pin (5) is a cylindrical rod, including a rod body and a push head. The diameter of the rod body is smaller than that of the push head. The lower end of the rod body extends out of the housing (1). The upper surface of the push head is a plane, which is used to cooperate with the lower surface of the spring to push.

3. The unlocking device for unlocking via high-pressure gas according to claim 1, characterized in that, The gap between the piston portion of the locking pin (4) and the guide hole of the piston cavity (2) is 0.02-0.05mm.

4. The unlocking device for unlocking via high-pressure gas according to claim 1, characterized in that, The spring is made of spring steel, and the slope angle of the trapezoidal boss is 45°.

5. The unlocking device for unlocking via high-pressure gas according to claim 1, characterized in that, Both the dynamic sealing ring and the end face static sealing ring are made of fluororubber.

6. The unlocking device for unlocking via high-pressure gas according to claim 1, characterized in that, The unlocking control logic is as follows: external high-pressure gas enters the sealed gas chamber through the high-pressure gas inlet of the piston chamber (2), and the gas pressure acts on the piston part of the locking pin (4), overcoming the elastic resistance of the spring (6), pushing the locking pin (4) to move backward along the guide hole of the piston chamber (2), and simultaneously driving the spring to move backward.

7. The unlocking device for unlocking via high-pressure gas according to claim 1, characterized in that, The unlocking and holding control logic is as follows: when the locking pin (4) moves backward to the preset position, the trapezoidal protrusion on the spring passes over the edge of the through hole of the piston end cap (3), and the front end face of the trapezoidal protrusion forms a mechanical limit with the rear end face of the piston end cap (3). Even if the high-pressure gas is stopped and the sealed air chamber is depressurized, the locking pin (4) remains in the retracted state.

8. The unlocking device for unlocking via high-pressure gas according to claim 1, characterized in that, The specific locking and reset control logic is as follows: In the unlocked and held state, manually press the lower end of the manual locking pin (5), the manual locking pin (5) slides upward along the mounting hole, and the push head pushes the spring plate to deform upward elastically, so that the trapezoidal boss on the spring plate disengages from the limiting cooperation with the piston end cover (3); at this time, the elastic force of the spring (6) drives the locking pin (4) to move forward along the guide hole until the front end of the locking pin (4) extends out of the guide hole of the housing (1), thereby realizing the locking and reset of the device.

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