A decap device

Abstract

The utility model relates to actuator technical field discloses a kind of uncovering device, including cylinder and the cylinder cover being hinged with cylinder through pivot, cylinder cover has uncovering state and closing state relative to cylinder, further include locking assembly, lock sleeve and electromagnetic unlocking mechanism, lock sleeve is alternatively connected with cylinder cover or cylinder, electromagnetic unlocking mechanism is connected with another, cylinder cover is kept in closing state by the locking of electromagnetic unlocking mechanism and lock sleeve, locking assembly includes second elastic member, the first elastic member of two ends respectively with cylinder and cylinder cover connection and the locking portion of sliding connection with cylinder, the end of locking portion towards cylinder cover is equipped with locking pin, locking pin is pre-tightened with cylinder by second elastic member and has the tendency of displacement to cylinder cover, cylinder cover is equipped with the locking hole of adaptation with locking pin, locking hole is aligned with locking portion position when cylinder cover is in uncovering state, locking pin is partially inserted into locking hole and is locked with locking hole. The above-mentioned uncovering device can be reused and has uncovering locking function.

Description

Technical Field

[0001] This utility model relates to the field of actuator technology, and in particular to a cover opening device. Background Technology

[0002] In aerospace equipment and other devices, launch missions are typically conducted via launch tubes. The cap-opening device is located at the end of the launch tube and serves a protective function during storage and transportation. During mission execution, the cap-opening device must be able to open quickly and reliably. Currently, most pin pullers are pyrotechnic actuators, typically using explosive bolts for unlocking and release. These cap-opening devices usually use disposable pyrotechnic devices for connection and locking, using the impact force generated by the explosion or combustion of the pyrotechnic device to achieve unlocking and release. However, using pyrotechnic devices for unlocking and release only allows for a single unlocking mission and cannot be reused. Furthermore, the position of the cap is not fixed after opening, posing a risk of the cap rebounding and damaging the launch device. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a lid opening device that is reusable and has a lid opening and locking function.

[0004] The specific technical solution of this utility model is as follows: a cover opening device includes a cylindrical body and a cover pivotally connected to the cylindrical body via a rotating shaft. The cover has an open state and a closed state relative to the cylindrical body. It also includes a locking component, a locking sleeve, and an electromagnetic unlocking mechanism. The locking sleeve is selectively connected to either the cover or the cylindrical body, and the electromagnetic unlocking mechanism is connected to the other. The cover is kept in the closed state by locking the cover with the electromagnetic unlocking mechanism. The locking component includes a second elastic element, a first elastic element with its two ends connected to the cylindrical body and the cover respectively, and a locking part slidably connected to the cylindrical body. The locking part has a locking pin at one end facing the cover. The locking pin is pre-tightened by the second elastic element and abuts against the cover, and has a tendency to move towards the cover. The cover has a locking hole adapted to the locking pin. When the cover is in the open state, the locking hole and the locking part are aligned, and the locking pin is partially inserted into the locking hole to lock the cover in the open state.

[0005] In the cap-opening device, when the electromagnetic unlocking mechanism is engaged with the locking sleeve, the cap is in the closed state, the first elastic element is in an energy-storing state, and the second elastic element is in a compressed state. The locking pin is pressed against the cap by the second elastic element. When there is a need to open the cap, the electromagnetic unlocking mechanism unlocks the locking sleeve, and the cap is driven by the first elastic element to rotate outward around the axis. When the cap rotates to a certain position, the locking hole and the locking part are aligned, and the locking pin is driven by the second elastic element to insert into the locking part, locking the cap in the open state. The above-mentioned cap-opening device does not rely on pyrotechnics for unlocking. Instead, through the cooperation of the electromagnetic unlocking mechanism and the locking sleeve, the cap and the cylinder can be closed and opened multiple times, realizing the reusability of the cap-opening device. At the same time, the automatic locking mechanism of the locking pin and the locking part locks the cap in a fixed position after opening, maintaining the open state and preventing the cap from rebounding and damaging the dispensing device.

[0006] Optionally, the cylinder body is provided with a sliding sleeve, and the end of the sliding sleeve away from the cylinder cover is provided with a small diameter section. The locking pin extends into the sliding sleeve and forms a sliding fit with the inner wall of the sliding sleeve. The locking pin is provided with a limiting member, the size of which is larger than the diameter of the small diameter section, so as to restrict the locking pin from disengaging from the sliding sleeve.

[0007] In the above technical solution, the locking part slides radially relative to the cylinder through the cooperation of the locking pin and the sliding sleeve. At the same time, the setting of the limiting component ensures that the locking pin will not disengage from the sliding sleeve during the sliding process, thereby improving the connection stability and reliability of the device.

[0008] Optionally, the second elastic element is disposed in the sliding sleeve and sleeved on the locking pin, with one end of the second elastic element connected to the small-diameter section of the sliding sleeve and the other end connected to the limiting element.

[0009] In the above technical solution, the second elastic element is sleeved on the locking pin, eliminating the need for additional space for the second elastic element, effectively saving internal space and achieving a compact layout. At the same time, the second elastic element forms a guide structure on the locking pin. When the locking pin slides under external force or the pre-tightening force of the second elastic element, the second elastic element can limit the circumferential sway of the pull rod, improving the stability of the locking pin sliding.

[0010] Optionally, the locking part further includes a pressing part detachably connected to the locking pin, the pressing part extending away from the cylinder.

[0011] In the above technical solution, compared with the solution of pulling down the locking pin, a pressing part is provided. By pressing down the pressing part, the locking pin and the locking hole can be released, which saves effort and facilitates the quick reset of the cylinder cover.

[0012] Optionally, the locking part includes two axially arranged locking pins, and the upper surface of the cylinder cover is provided with two corresponding locking holes. After the electromagnetic unlocking mechanism and the lock sleeve are unlocked, the cylinder cover is driven to flip by the first elastic element. Under the push of the second elastic element, the two locking pins are respectively inserted into the corresponding locking holes to lock the cylinder cover in the open state.

[0013] In the above technical solution, the two axially distributed locking pins and the corresponding locking holes on the cylinder cover form a double-point lock, which can balance the external forces such as airflow impact and vibration load on the cylinder cover when it is open, avoid tilting or torsional displacement caused by single-point force, and ensure that the cylinder cover always maintains a precise opening angle and position during the launch process.

[0014] Optionally, the pressing part has two connecting parts that are respectively connected to the corresponding locking pins, so that the two locking pins are connected through the pressing part.

[0015] In the above technical solution, compared with the design where each locking pin is connected to a pressing part, the two locking pins are connected to the same pressing part to achieve double-pin linkage, thereby realizing the synchronous operation of the locking pins and ensuring that the two locking pins exit the locked state with the same displacement and speed, thus improving the operation efficiency of releasing the cylinder cover opening state.

[0016] Optionally, the locking pin has a rounded end near the end of the cylinder cover.

[0017] In the above technical solution, when the locking pin is inserted into the locking hole, the rounded corner can form a smooth contact with the wall of the locking hole through the arc surface, which greatly reduces the insertion resistance and avoids jamming caused by excessive friction. In addition, the rounded corner also has a self-guiding function. When the cylinder cover is flipped to the locking position, even if there is a slight angle or positional deviation between the locking pin and the locking hole, it can be quickly and accurately inserted through the guiding effect of the rounded corner.

[0018] Optionally, the cylinder cover is provided with a pivot portion connected to the rotating shaft, and a locking hole is provided on the upper surface of the pivot portion. The bottom of the pivot portion and the locking hole are continuous curved surfaces. During the cylinder cover flipping process, the locking pin remains in contact with the curved surface.

[0019] In the above technical solution, after the electromagnetic unlocking mechanism unlocks the lock sleeve, the continuous curved surface on the pivot part forms a rolling contact with the locking pin, which reduces the resistance of the cylinder cover flipping and ensures that it can quickly complete the opening action; at the same time, the curved surface structure avoids the wear of the locking pin by the sharp edge, improving the service life and reliability of the component; in addition, the curved surface design can ensure the stability of the position when the cylinder cover flips, avoid lateral slippage or jumping, and help the locking hole to align with the locking pin position.

[0020] Optionally, the first elastic element is sleeved on the rotating shaft.

[0021] In the above technical solution, the first elastic element is sleeved on the rotating shaft, and its elastic force direction is consistent with the flipping direction of the cylinder cover, which can directly convert power into flipping torque and reduce energy loss.

[0022] Optionally, the locking assembly also includes a micro switch electrically connected to the control system. The micro switch is located on the outside of the cylinder and on the flipping path of the cylinder cover. One end of the micro switch near the cylinder cover has a protruding contact. When the locking part is partially inserted into the locking hole, the upper surface of the cylinder cover presses against the contact, causing the micro switch to send an electrical signal to the control system.

[0023] In the above technical solution, a micro switch is set up so that when the locking part is inserted into the locking hole, the cover touches the contact point to send a real-time signal to the control system that the cover is in place. This verifies that the cover has been flipped to the predetermined angle and is initially locked, providing a basis for the safe unlocking of subsequent launch commands. At the same time, abnormal states can be identified in a timely manner through signal feedback, ensuring the reliability and safety of the launch process.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] (1) Reusable and with opening and locking function: The opening device does not rely on pyrotechnics to unlock. Instead, it uses the electromagnetic unlocking mechanism and the locking sleeve to allow the cylinder cover and cylinder body to be closed and opened multiple times. This makes the opening device reusable and quick to open. At the same time, the automatic locking mechanism of the locking pin and the locking part locks the cylinder cover in a fixed position after opening, maintaining the open state and preventing the cylinder cover from rebounding and damaging the cylinder outlet device.

[0026] (2) High efficiency of cylinder cap locking: The end of the locking pin is rounded and the pivot part is curved, which can ensure that when the cylinder cap is flipped to the locking position, the locking hole can be aligned with the locking pin. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 This is a schematic diagram of the lid opening device in the closed state;

[0030] Figure 4 This is a schematic diagram of the lid-opening device in the open state.

[0031] The attached figures are labeled as follows: 1. Cylinder cover; 2. Cylinder body; 3. Locking hole; 4. First elastic element; 5. Rotating shaft; 6. Micro switch; 7. Contact; 8. Pressing part; 9. Sliding sleeve; 10. Electromagnetic unlocking mechanism; 11. Locking sleeve; 12. Locking pin; 13. Locking part; 14. Second elastic element; 15. Limiting element; 16. Small diameter section; 17. Pivot part; 18. Connecting part. Detailed Implementation

[0032] The present invention will be further described below with reference to embodiments. Unless otherwise specified, all devices, connection structures, and methods involved in this invention are known in the art.

[0033] Example 1

[0034] Reference Figures 1 to 4 As shown, this utility model provides a lid opening device, including a cylindrical body 2 and a lid 1 pivotally connected to the cylindrical body 2 via a rotating shaft 5. The lid 1 has an open state and a closed state relative to the cylindrical body 2. It also includes a locking assembly for locking the lid 1 in the open state, a locking sleeve 11 connected to the lid 1, and an electromagnetic unlocking mechanism 10 connected to the cylindrical body 2. The cylindrical body 2 and the lid 1 are closed by the electromagnetic unlocking mechanism 10 locking the locking sleeve 11. The locking assembly includes a second elastic element 14, a first elastic element 4 connected at both ends to the cylindrical body 2 and the lid 1 respectively, and a lock slidably connected to the cylindrical body 2. In this embodiment, the first elastic element 4 used in the locking part 13 is a torsion spring. The locking part 13 is provided with a locking pin 12 at one end facing the cylinder cover 1. The locking pin 12 is pre-tightened by the second elastic element 14 and pressed against the downward surface of the cylinder cover 1 and has a tendency to move towards the cylinder cover 1. The cylinder cover 1 is provided with a locking hole 3 that matches the locking pin 12. After the electromagnetic unlocking mechanism 10 and the lock sleeve 11 are unlocked, when the cylinder cover 1 is in the open state, the cylinder cover 1 is driven to flip by the first elastic element 4, the locking hole 3 is aligned with the locking part 13, and the end of the locking pin 12 is inserted into the locking hole 3 to lock the cylinder cover 1 in the open state.

[0035] The electromagnetic unlocking mechanism 10 and locking sleeve 11 structure used in this embodiment adopts the locking and releasing mechanism from Chinese patent application CN117073466A. Its specific structure and working process have been disclosed in detail in that patent and will not be repeated here. It should be noted that the electromagnetic unlocking mechanism 10 and locking sleeve 11 of this utility model are not limited to the structural form in the aforementioned patent. In other embodiments, other known equivalent structures capable of achieving the same function can be used to achieve essentially the same technical effect. Furthermore, the electromagnetic unlocking mechanism 10 can be selectively connected to either the cylinder cover 1 or the cylinder body 2, while the locking sleeve 11 is connected to the other.

[0036] like Figure 3As shown, when the opening device of this embodiment is in the closed state: through the connection between the electromagnetic unlocking mechanism 10 and the locking sleeve 11, the cylinder cover 1 is in the closed state connected to the cylinder body 2, the first elastic member 4 is in the energy storage state, the locking spring is in the compression state, and the upper end of the locking pin 12 abuts against the cylinder cover 1 under the action of the second elastic member 14.

[0037] When there is a need to open the cover, the electromagnetic unlocking mechanism 10 is energized first. The electromagnetic unlocking mechanism 10 releases the physical constraint on the lock sleeve 11. Under the action of the first elastic element 4, the cylinder cover 1 rotates around the rotating shaft 5. When the cylinder cover 1 is flipped to a certain position, the axis of the locking hole 3 is aligned with the axis of the locking pin 12. The locking pin 12 is driven by the second elastic element 14 to insert into the locking part 13 and lock the cylinder cover 1 in the open state.

[0038] After the lid opening device completes the lid opening task, it needs to close the lid and wait for the next lid opening command. The reset operation of the lid opening device is as follows: the locking pin 12 moves down and disengages from the locking hole 3, the locking pin 12 releases the constraint on the cylinder cover 1, the cylinder cover 1 is manually flipped or the cylinder cover 1 is flipped by the motor, so that the locking sleeve 11 is locked with the electromagnetic unlocking mechanism 10, and the reset is completed.

[0039] The above-mentioned opening device does not rely on pyrotechnics to unlock. Instead, through the cooperation of the electromagnetic unlocking mechanism 10 and the locking sleeve 11, the cover 1 and the cylinder 2 can be closed and opened multiple times, realizing the reusability of the opening device. At the same time, the automatic locking mechanism of the locking pin 12 and the locking part 13 locks the opened cover 1 in a fixed position, maintaining the open state and preventing the cover 1 from rebounding and damaging the cylinder dispensing device.

[0040] Example 2

[0041] Based on Embodiment 1, this utility model provides a lid-opening device, such as... Figure 1 As shown, the locking assembly also includes a microswitch 6 electrically connected to an external control system. The microswitch 6 is located on the outside of the cylinder 2 and on the flipping path of the cylinder cover 1. A protruding contact 7 is provided at one end near the cylinder cover 1. When the locking part 13 is partially inserted into the locking hole 3, the upper surface of the cylinder cover 1 presses against the contact 7, causing the microswitch 6 to send an electrical signal to the control system. By setting the microswitch 6, when the locking part 13 is partially inserted into the locking hole 3, the cylinder cover 1 presses against the contact 7, sending a signal to the control system in real time that the cover is fully open. This verifies that the cylinder cover 1 has been flipped to a predetermined angle and is initially locked, providing a basis for the safe unlocking of subsequent launch commands. Simultaneously, abnormal states can be identified promptly through signal feedback, ensuring the reliability and safety of the launch process.

[0042] Example 3

[0043] Based on embodiments 1 and 2, this utility model provides a lid-opening device, such as... Figure 2As shown, the cylinder 2 is provided with two axially arranged sliding sleeves 9. The sliding sleeves 9 have a stepped structure, and the end away from the cylinder cover 1 has a small diameter section 16. The locking pin 12 extends into the sliding sleeve 9 and forms a sliding fit with the inner wall of the sliding sleeve 9, and can move radially along the sliding sleeve 9. The locking pin 12 is provided with a limiting member 15, which is an annular boss. Its size is larger than the diameter of the small diameter section 16 of the sliding sleeve 9, so as to prevent the locking pin 12 from disengaging from the sliding sleeve 9.

[0044] In this preferred embodiment, the sliding sleeve 9 also has a small-diameter section 16 at one end near the cylinder cover 1. The small-diameter sections 16 at both ends limit the sliding range of the locking pin 12 and prevent excessive displacement of the locking pin 12. It can be understood that in another embodiment, the depth design of the locking hole 3 replaces the small-diameter section 16 at the end of the sliding sleeve 9 near the cylinder cover 1 to limit the sliding range of the locking pin 12.

[0045] In this preferred embodiment, the limiting member 15 abuts against the inner wall of the sliding sleeve 9 to guide the sliding of the locking pin 12 and improve its sliding stability.

[0046] like Figure 2 As shown, the second elastic element 14 is disposed in the sliding sleeve 9 and sleeved on the locking pin 12. One end of the second elastic element 14 is connected to the small-diameter section 16 of the sliding sleeve 9, and the other end is connected to the limiting element 15. The second elastic element 14 is sleeved on the locking pin 12, eliminating the need for additional space for its placement, effectively saving internal space and achieving a compact layout. Simultaneously, the second elastic element 14 forms a guiding structure on the locking pin 12. When the locking pin 12 slides under external force or the preload of the second elastic element 14, the second elastic element 14 can limit the circumferential sway of the pull rod, improving the stability of the locking pin 12's sliding.

[0047] like Figure 1 As shown, the locking part 13 includes two axially arranged locking pins 12, and the upper surface of the cylinder cover 1 is provided with two locking holes 3. The locking pins 12, the sliding sleeve 9, and the locking holes 3 are aligned on their axes. After the electromagnetic unlocking mechanism 10 unlocks the locking sleeve 11, the cylinder cover 1 is driven to flip by the first elastic element 4. Under the push of the second elastic element 14, the two locking pins 12 slide along the sliding sleeve 9 and are respectively inserted into the corresponding locking holes 3 to lock the cylinder cover 1 in the open state. The two axially distributed locking pins 12 and the corresponding locking holes 3 on the cylinder cover 1 form a double-point lock, which can balance the external forces such as airflow impact and vibration load on the cylinder cover 1 in the open state. Compared with the single-point locking scheme, it can avoid tilting or torsional displacement caused by single-point force and ensure that the cylinder cover 1 always maintains a precise opening angle and position during the launch process.

[0048] like Figure 1As shown, the locking part 13 also includes a pressing part 8, which has a plate-like structure and a connecting part 18 extending toward the locking pin 12. The connecting part 18 has a through hole, and the end of the locking pin 12 away from the cylinder cover 1 passes through the through hole and is connected to the connecting part 18 by a screw. The pressing part 8 extends away from the cylinder body 2. By providing the pressing part 8, pressing down on the pressing part 8 can drive the locking pin 12 to slide, thereby releasing the locking pin 12 and the locking hole 3, saving effort and facilitating the quick reset of the cylinder cover 1.

[0049] In this embodiment, the pressing part 8 is provided with two connecting parts 18, which are respectively connected to the corresponding locking pins 12, so that the two locking pins 12 are connected through the pressing part 8. The two locking pins 12 are connected to the same pressing part 8 to realize double-pin linkage, thereby realizing synchronous operation of the locking pins 12, ensuring that the two locking pins 12 exit the locked state with the same displacement and speed, and improving the operation efficiency of releasing the opening state of the cylinder cover 1.

[0050] In other embodiments, the reset can be achieved by pulling the bottom of the locking pin 12, or by connecting each locking pin 12 to a separate pressing part 8.

[0051] like Figure 1 As shown, the locking pin 12 has a rounded end near the end of the cap 1. When the locking pin 12 is inserted into the locking hole 3, the rounded end can make smooth contact with the wall of the locking hole 3 through the arc surface, which greatly reduces the insertion resistance and avoids jamming caused by excessive friction. In addition, the rounded end also has a self-guiding function. When the cap 1 is flipped to the locked position, even if there is a slight angle or positional deviation between the locking pin 12 and the locking hole 3, it can be quickly and accurately inserted through the guiding effect of the rounded end.

[0052] like Figure 3 and Figure 4 As shown, the cylinder cover 1 has a pivot portion 17 connected to the rotating shaft 5, with two pivot holes symmetrically arranged on both sides, through which the rotating shaft 5 passes. A locking hole 3 is located on the upper surface of the pivot portion 17. The bottom of the pivot portion 17 and the locking hole 3 form a continuous curved surface. During the flipping of the cylinder cover 1, the locking pin 12 remains in contact with the curved surface. When the electromagnetic unlocking mechanism 10 unlocks from the locking sleeve 11, the continuous curved surface on the pivot portion 17 forms a rolling contact with the locking pin 12, reducing the resistance to flipping the cylinder cover 1 and ensuring that it can quickly complete the opening action. Simultaneously, the curved surface structure avoids wear on the locking pin 12 from sharp edges, improving the service life and reliability of the component. Furthermore, the curved surface design ensures the stability of the cylinder cover 1 during flipping, preventing lateral slippage or jumping, and helps the locking hole 3 to align with the locking pin 12.

[0053] In this preferred embodiment, the first elastic element 4 is sleeved on the rotating shaft 5, and the elastic force direction of the first elastic element 4 is consistent with the flipping direction of the cylinder cover 1, which can directly convert power into flipping torque and reduce energy loss.

[0054] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A lid opening device, comprising a cylindrical body (2) and a lid (1) pivotally connected to the cylindrical body (2) via a pivot (5), wherein the lid (1) has an open state and a closed state relative to the cylindrical body (2), characterized in that, It also includes a locking assembly, a locking sleeve (11), and an electromagnetic unlocking mechanism (10). The locking sleeve (11) is selectively connected to either the cylinder cover (1) or the cylinder body (2), and the electromagnetic unlocking mechanism (10) is connected to the other. The cylinder cover (1) is kept in a closed state by the locking of the electromagnetic unlocking mechanism (10) and the locking sleeve (11). The locking assembly includes a second elastic element (14), a first elastic element (4) whose two ends are respectively connected to the cylinder body (2) and the cylinder cover (1), and a locking part (1) that is slidably connected to the cylinder body (2). 3) The locking part (13) is provided with a locking pin (12) at one end facing the cylinder cover (1). The locking pin (12) is pre-tightened by the second elastic member (14) and abuts against the cylinder cover (1) and has a tendency to move towards the cylinder cover (1). The cylinder cover (1) is provided with a locking hole (3) that matches the locking pin (12). When the cylinder cover (1) is in the open state, the locking hole (3) is aligned with the locking part (13), and the locking pin (12) is partially inserted into the locking hole (3) to lock the cylinder cover (1) in the open state.

2. The lid-opening device according to claim 1, characterized in that, The cylinder (2) is provided with a sliding sleeve (9). The end of the sliding sleeve (9) away from the cylinder cover (1) is provided with a small diameter section (16). The locking pin (12) extends into the sliding sleeve (9) and forms a sliding fit with the inner wall of the sliding sleeve (9). The locking pin (12) is provided with a limiting member (15). The size of the limiting member (15) is larger than the diameter of the small diameter section (16) to restrict the locking pin (12) from disengaging from the sliding sleeve (9).

3. The lid-opening device according to claim 2, characterized in that, The second elastic element (14) is disposed in the sliding sleeve (9) and sleeved on the locking pin (12). One end of the second elastic element (14) is connected to the small diameter section (16) of the sliding sleeve (9), and the other end is connected to the limiting element (15).

4. The lid-opening device according to claim 1, characterized in that, The locking part (13) also includes a pressing part (8) that is detachably connected to the locking pin (12), and the pressing part (8) extends in a direction away from the cylinder (2).

5. The lid-opening device according to claim 4, characterized in that, The locking part (13) includes two axially arranged locking pins (12), and the upper surface of the cylinder cover (1) is provided with two corresponding locking holes (3). After the electromagnetic unlocking mechanism (10) and the lock sleeve (11) are unlocked, the cylinder cover (1) is driven to flip by the first elastic element (4). Under the push of the second elastic element (14), the two locking pins (12) are respectively inserted into the corresponding locking holes (3) to lock the cylinder cover (1) in the open state.

6. The lid-opening device according to claim 5, characterized in that, The pressing part (8) is provided with two connecting parts (18) that are respectively connected to the corresponding locking pins (12), so that the two locking pins (12) are connected through the pressing part (8).

7. The lid-opening device according to claim 1, characterized in that, The locking pin (12) has a rounded end near the end of the cylinder cover (1).

8. The lid-opening device according to claim 1, characterized in that, The cylinder cover (1) is provided with a pivot part (17) connected to the rotating shaft (5). The locking hole (3) is provided on the upper surface of the pivot part (17). The bottom of the pivot part (17) and the locking hole (3) are continuous curved surfaces. During the cylinder cover flipping process, the locking pin (12) remains in contact with the curved surface.

9. A lid-opening device according to claim 1, characterized in that, The first elastic element (4) is sleeved on the rotating shaft (5).

10. A lid-opening device according to any one of claims 1 to 9, characterized in that, The locking assembly also includes a micro switch (6) electrically connected to the control system. The micro switch (6) is located on the outside of the cylinder (2) and on the flipping path of the cylinder cover (1). One end of the micro switch (6) near the cylinder cover (1) has a protruding contact (7). When the locking part (13) is partially inserted into the locking hole (3), the upper surface of the cylinder cover (1) presses the contact (7), causing the micro switch (6) to send an electrical signal to the control system.

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