Automatic unlocking and locking device

Abstract

The invention relates to an automatic unlocking and locking device which comprises a device body. The device body comprises a support guide rail, a hydraulic oil cylinder, a support, a chain wheel, a connecting rod, a spring and a lock. The two support guide rails are symmetrically installed on the frame, a piston rod of a hydraulic oil cylinder installed on the frame is provided with a chain wheel through a pin shaft, the chain wheel is connected with the frame through a chain and the pin shaft, and the other end of the chain is fixedly connected with the support guide rails through supporting lugs. The connecting rod I and the connecting rod II are connected in series through a pin shaft, the connecting rod I and the chain are connected to the same supporting lug through the pin shaft, the connecting rod II is connected with the support guide rail through the pin shaft, the end of the connecting rod II is made into an inclined face, and the connecting rod III is connected between the support guide rail and the support through the pin shaft. The other end of the spring I is connected with the bracket guide rail; a lock block is installed in a lock box of a lock installed on the support through a spring II, and the lock block is correspondingly and movably connected with the inclined face of the connecting rod II. Unlocking is easy, locking is firm, it is ensured that the radar is rapidly disengaged from a power station during working, and self-locking can be achieved without manual operation during transportation.

Description

Technical Field

[0001] The present invention relates to an automatic unlocking and locking device, belonging to the technical field of radar interlocking mechanisms. Background Art

[0002] For a radar in a single-vehicle integrated working mode, its power supply station needs to be integrated with the main radar on the same vehicle. When the main radar is working, the power supply station must be flexibly disconnected from the main radar to prevent the vibration generated during the operation of the power supply station from having an adverse impact on the electrical performance of the main radar. A lifting mechanism is usually adopted for the radar in the single-vehicle integrated working mode to disconnect the power supply station from the main radar when the main radar is working. However, the existing lifting mechanism cannot reliably self-lock the hydraulic cylinder when the main radar is retracted for road transportation. Adding a manual bolt or a hydraulic bolt not only complicates the operation but also reduces the reliability of the radar equipment. Therefore, to ensure that the electrical performance of the radar in the single-vehicle integrated working mode is not affected and it can be firmly self-locked without manual operation during retraction and transportation, it is very necessary to develop an automatic unlocking and locking device to achieve reliable locking and unlocking of the lifting mechanism. Summary of the Invention

[0003] The object of the present invention is to provide, in view of the above deficiencies of the prior art, an automatic unlocking and locking device with a simple structure, without manual intervention, fast and clean unlocking, firm and reliable locking, ensuring that the radar in the single-vehicle integrated working mode can be quickly unlocked and disconnected from the power supply station during operation, and can be reliably self-locked without manual operation during retraction and transportation, so as to achieve reliable locking and unlocking of the lifting mechanism.

[0004] The present invention realizes the above object through the following technical solutions: An automatic unlocking and locking device includes a device body and a power station; the feature is that the device body includes a support guide rail, a vehicle frame, a hydraulic cylinder, a support, a sprocket, a chain, a connecting rod, a spring, a lock and a plurality of pin shafts; There are two support guide rails, symmetrically installed on the vehicle frame. The vehicle frame is installed with a hydraulic cylinder through a pin shaft. The piston rod of the hydraulic cylinder is connected with a sprocket through a pin shaft. The sprocket is connected with the vehicle frame through a chain and a pin shaft. The other end of the chain is fixedly connected with the support through an ear. The connecting rod is composed of connecting rod I, connecting rod II and connecting rod III. Connecting rod I and connecting rod II are connected in series through a pin shaft. Connecting rod I is connected with the chain at the same ear through a pin shaft. Connecting rod II is connected with the support guide rail through a pin shaft. The end of connecting rod II is made into an inclined plane. Connecting rod III is installed between the support guide rail and the support through a pin shaft. A power station is installed on the support. The spring is composed of spring I and spring II. One end of spring I is connected with connecting rod I, and the other end is connected with the support guide rail. A lock is installed on the support. The lock is composed of a lock box, spring II and a lock block. The lock box is internally connected with a lock block through spring II. The lock block is movably connected corresponding to the inclined plane of connecting rod II.

[0005] The hydraulic cylinders, sprockets, chains, connecting rods, springs and locks are provided in two sets each, and are symmetrically installed on the frame or the bracket guide rails.

[0006] The lock block is in a protruding state when there is no external force, ensuring reliable locking of the bracket during transportation.

[0007] The chain is in a slack state when the piston rod of the hydraulic cylinder retracts with a small displacement, ensuring reliable locking of the bracket during transportation.

[0008] The connecting rod III is removed during unlocking. At this time, the chain is always in a taut state, and the inclined surface on the connecting rod II contacts the inclined surface of the lock block, pushing the lock block back into the lock box to ensure quick unlocking of the bracket.

[0009] The beneficial effects of the present invention compared with the prior art are as follows: This automatic unlocking and locking device realizes the conversion between unlocking and locking without manual intervention through the lifting mechanism composed of a sprocket, a chain, an ear, a hydraulic cylinder, a connecting rod III, a bracket and a bracket guide rail, and the locking and unlocking mechanism composed of a connecting rod I, a connecting rod II, a spring I, a lock block, a spring II and a lock box. The structure of the device body is simple, the unlocking is fast and neat, and the locking is firm and reliable, ensuring that the radar can be quickly unlocked and disconnected from the power supply station during the integrated working mode of the single vehicle, and can be reliably self-locked without manual operation during retraction and transportation. Description of the Drawings

[0010] Figure 1 Is the front view of an automatic unlocking and locking device; Figure 2 Is Figure 1 The C-C cross-sectional view of; Figure 3 Is the axonometric view of an automatic unlocking and locking device; Figure 4 Is the top view of an automatic unlocking and locking device; Figure 5 Is the axonometric view of the bracket of an automatic unlocking and locking device; Figure 6 Is the axonometric view of the connecting rod I of an automatic unlocking and locking device; Figure 7 Is the axonometric view of the connecting rod II of an automatic unlocking and locking device; Figure 8 Is the axonometric view of the lock block of an automatic unlocking and locking device.

[0011] In the figure: 1. Sprocket wheel; 2. Chain; 3. Link rod I; 4. Link rod II; 5. Ear; 6. Spring I; 7. Hydraulic cylinder; 8. Link rod III; 9. Bracket guide rail; 10. Bracket; 11. Lock block; 12. Spring II; 13. Lock box; 14. Power station; 15. Frame. Detailed implementation mode

[0012] The following further elaborates on the detailed implementation mode of an automatic unlocking and locking device in conjunction with the attached drawings (see Figures 1 to 8 ): An automatic unlocking and locking device mainly consists of a device body and a power station 14; the device body includes a bracket guide rail 9, a frame 15, a hydraulic cylinder 7, a bracket 10, a sprocket wheel 1, a chain 2, link rods, springs, an ear 5, a lock, and multiple pin shafts; the link rods are composed of link rod I 3, link rod II 4, and link rod III 8; the springs are composed of spring I 6 and spring II 12; the lock is composed of a lock block 11, spring II 12, and a lock box 13; Among them, the sprocket wheel 1, chain 2, ear 5, hydraulic cylinder 7, link rod III 8, bracket 10, and bracket guide rail 9 form a lifting mechanism, and link rod I 3, link rod II 4, spring I 6, and the lock form a locking and unlocking mechanism; the locking and unlocking mechanism realizes automatic locking and unlocking according to the lifting characteristics of the lifting mechanism. (See Figures 1 to 4 ).

[0013] There are two bracket guide rails 9, symmetrically installed on the frame 15. The frame 15 is equipped with a hydraulic cylinder 7 through a pin shaft. The piston rod of the hydraulic cylinder 7 is connected to a sprocket wheel 1 through a pin shaft. The sprocket wheel 1 is connected to the frame 15 through a chain 2 and a pin shaft. The other end of the chain 2 is fixedly connected to the bracket guide rail 9 through an ear 5; link rod I 3 and link rod II 4 are connected in series "hand in hand" through a pin shaft. Link rod I 3 is connected to the chain 2 through a pin shaft at the same ear 5. Link rod II 4 is connected to the bracket guide rail 9 through a pin shaft. The end of link rod II 4 is made into an inclined surface. Link rod III 8 is connected between the bracket guide rail 9 and the bracket 10 through a pin shaft. A power station 14 is installed on the bracket 10; one end of spring I 6 is connected to link rod I 3, and the other end is connected to the bracket guide rail 9; a lock is installed on the bracket 10. A lock block 11 is installed in the lock box 13 through a spring II 12, and the lock block 11 is movably connected corresponding to the inclined surface of link rod II 4. (See Figure 1 , Figure 2 , Figure 3 ).

[0014] One end of the hydraulic cylinder 7 is pin-connected to the frame 15, and the other end is pin-connected to the sprocket 1; one end of the chain 2 is pin-connected to the frame 15, and the other end is fixedly connected to the bracket 10; the connecting rod Ⅰ3 and the connecting rod Ⅱ4 are pin-connected, the other end of the connecting rod Ⅰ3 is pin-connected to the same support ear 5 as one end of the chain 2, and the other end of the connecting rod Ⅱ4 is pin-connected to the bracket guide rail 9; one end of the spring Ⅰ6 is connected to the connecting rod Ⅰ3, and the other end is connected to the bracket guide rail 9; the locking block 11 is placed in the lock box 13, and the spring Ⅱ12 is installed in the lock box 13 to ensure that the locking block 11 is in an extended state when there is no external force, and the lock box 13 is integrated and installed on the bracket 10.

[0015] During installation, the power station 14 is lifted and lowered into place along with the lifting mechanism before the connecting rod III 8 is installed. When the radar is transported by road, the piston rod of the hydraulic cylinder 7 is retracted with a small displacement due to internal leakage, and the chain 2 is in a relaxed state due to the retraction of the hydraulic cylinder 7. The spring I6 will drive the connecting rod I3 to rotate clockwise around point B, which will cause the connecting rod I3 and the inclined surface of the locking block 11 to fail to contact in advance, making the locking block 11 unable to retract. At this time, the locking block 11 will be stuck on the bracket guide rail 9 to ensure that the lifting mechanism is securely locked. (See Figures 1 to 8 ).

[0016] When the power station 14 needs to be lowered with the bracket 10, the piston rod of the hydraulic cylinder 7 is first extended into place. At this time, the vehicle has stopped, and the leakage in the hydraulic cylinder 7 is small in a short time, and the piston rod of the hydraulic cylinder 7 will not be retracted. After removing the connecting rod III8, due to the gravity of the power station 14, the chain 2 will always be in a taut state, and the spring I6 cannot pull the connecting rod I3. When the power station 14 descends with the bracket 10, the inclined surface on the connecting rod I3 will support the inclined surface of the locking block 11, and the locking block 11 will be pushed back into the lock box 13. The locking block 11 will not get stuck on the upper side of the bracket guide rail 9, thereby unlocking the lifting mechanism, and the power station 14 descends smoothly to the ground with the bracket 10.

[0017] The automatic unlocking and locking device has three major features: 1) the unlocking force is generated by gravity to unlock the lifting mechanism; 2) the internal leakage characteristic of the hydraulic cylinder 7 is utilized to lock the bracket guide rail 9 through the locking and unlocking device; 3) the inclined surfaces made on the ends of the connecting rods Ⅰ3 and Ⅱ4 correspond to the inclined surfaces made on the locking block 11 to connect and slide and unlock, so the unlocking is fast and reliable.

[0018] The automatic unlocking and locking device was installed on a radar and subjected to 100 unlocking and locking tests. The device body locked quickly and reliably when transported with the power station 14. When the main radar needed to be disconnected from the power station 14, the unlocking was smooth, without any jamming and reliable.

[0019] The above are only the preferred embodiments of the present invention. The above examples do not impose any formal restrictions on the essence of the present invention. Any simple modification or variation made by those of ordinary skill in the art in the relevant technical field to the above specific embodiments after reading this specification, and any equivalent embodiments that may be changed or modified by using the technical content disclosed above into equivalent variations, still fall within the scope of the technical solution of the present invention without departing from the essence and scope of the present invention.

Claims

1. An automatic unlocking and locking device, comprising a device body and a power station (14); characterized in that: The device body comprises a support guide rail (9), a vehicle frame (15), a hydraulic cylinder (7), a support (10), a sprocket (1), a chain (2), a connecting rod, a spring, a lock and a plurality of pin shafts; there are two support guide rails (9) which are symmetrically installed on the vehicle frame (15), the vehicle frame (15) is installed with a hydraulic cylinder (7) through a pin shaft, the piston rod of the hydraulic cylinder (7) is connected with the sprocket (1) through a pin shaft, the sprocket (1) is connected with the vehicle frame (15) through the chain (2) and a pin shaft, and the other end of the chain (2) is fixedly connected with the support guide rail (9) through an ear (5); the connecting rod is composed of a connecting rod I (3), a connecting rod II (4) and a connecting rod III (8), the connecting rod I (3) and the connecting rod II (4) are connected in series through a pin shaft, the connecting rod I (3) is connected with the chain (2) through a pin shaft at the same ear (5), the connecting rod II (4) is connected with the support guide rail (9) through a pin shaft, the end of the connecting rod II (4) is made into an inclined surface, the connecting rod III (8) is installed between the support guide rail (9) and the support (10) through a pin shaft, and a power station (14) is installed on the support (10); the spring is composed of a spring I (6) and a spring II (12), one end of the spring I (6) is connected with the connecting rod I (3), and the other end is connected with the support guide rail (9); a lock is installed on the support (10), and the lock is composed of a lock box (13), a spring II (12) and a lock block (11), the lock block (11) is installed in the lock box (13) through the spring II (12), and the lock block (11) is movably connected corresponding to the inclined surface of the connecting rod II (4).

2. The automatic unlocking and locking device according to claim 1, characterized in that: There are two sets of the hydraulic cylinder (7), the sprocket (1), the chain (2), the connecting rod, the spring and the lock respectively, and they are symmetrically installed on the vehicle frame (15) or the support guide rail (9).

3. An automatic unlocking and locking device according to claim 1, characterized in that: The lock block (11) is in a protruding state without external force, ensuring reliable locking of the support (10) during transportation.

4. An automatic unlocking and locking device according to claim 1, characterized in that: The chain (2) is in a slack state when the piston rod of the hydraulic cylinder (7) retracts with a small displacement, ensuring reliable locking of the support (10) during transportation.

5. An automatic unlocking and locking device according to claim 1, characterized in that: The connecting rod III (8) is removed during unlocking. At this time, the chain (2) is always in a taut state, and the inclined surface on the connecting rod II (4) contacts the inclined surface of the lock block (11), pushing the lock block (11) back into the lock box (13) to ensure quick unlocking of the support (10).

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