A passive unlocking active self-locking mechanism

Abstract

The present invention relates to a locking mechanism, specifically a passive unlocking active self-locking mechanism. It is characterized in that it includes a water support tube, an end cover is provided on the support tube, a rotating shaft is provided in the support tube, and a center hole is provided on the end cover corresponding to the rotating shaft. An arc-shaped friction block is provided in the support tube, and a compression spring is provided between the outer wall of the friction block and the inner wall of the support tube. A push rod is provided at the end of the friction block and is arranged along the axial direction of the support tube. A radial through groove is provided on the end cover corresponding to the push rod, and the push rod extends to the outside of the end cover through the radial through groove. A support ring is concentrically arranged on the outside of the end cover, and no less than two arc-shaped grooves are sequentially provided on the end cover corresponding to the support ring along the circumference of the end cover. A connecting pin is provided on the support ring corresponding to the arc groove, and one end of the connecting pin is located in the arc groove, and a tension spring is provided between the connecting pin and the support tube. A flange is provided on the outer circumferential surface of the support ring corresponding to the push rod, and a swing rod extending outward is fixed on the outer circumference of the support ring.

Description

Technical Field

[0001] The invention relates to a locking mechanism, in particular to a passive unlocking active self-locking mechanism, which is particularly suitable for the transmission and conveying shafts of components such as marine shelves and conveyors. Background Art

[0002] It is well known in the shipbuilding industry that due to different working conditions, marine storage equipment needs to effectively lock the conveyor chain and conveyor shaft when storing goods on storage shelves, conveyors, etc., to prevent the goods from moving with the inertia of the conveyor chain and conveyor shaft when the hull shakes, causing damage to the equipment and goods. Therefore, a locking mechanism needs to be installed on the conveyor chain and conveyor shaft of storage shelves, conveyors, etc. for storing goods. At present, the traditional locking mechanism needs to be equipped with an electric device as a power source, which requires more parts, has a complex structure, and is costly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a passive unlocking active self-locking mechanism, which has a simple structure and low manufacturing cost.

[0004] In order to solve the above problems, the following technical solutions are provided:

[0005] The passive unlocking active self-locking mechanism of the present invention is characterized in that it includes a horizontally arranged support tube, an end cap is arranged on the support tube, a rotating shaft is arranged concentrically in the support tube, the outer diameter of the rotating shaft is smaller than the inner diameter of the support tube, a center hole is arranged on the end cap corresponding to the rotating shaft, the rotating shaft passes through the corresponding center hole and extends out of the support tube, and the rotating shaft and the center hole are matched in a rotating manner. An arc-shaped friction block is arranged in the support tube, the friction block and the support tube are concentrically arranged, the friction block is located between the inner side wall of the support tube and the rotating shaft, and a compression spring is arranged between the outer side wall of the friction block and the inner side wall of the support tube. A push rod is arranged along the axial direction of the support tube at the end of the friction block, and a radial through groove is arranged on the end cap corresponding to the push rod, the push rod passes through the radial through groove and extends to the outside of the end cap, and the push rod and the radial through groove are matched in a sliding manner. A support ring is concentrically arranged on the outer side of the end cover, and at least two arc grooves are sequentially arranged along the circumference of the end cover on the section of the end cover corresponding to the support ring, and the arc grooves are concentrically arranged with the support tube. A connecting pin is arranged on the support ring corresponding to the arc groove, and one end of the connecting pin is located in the arc groove, and the connecting pin and the arc groove are matched in a state of rotation along the circumference of the support tube and axial fixation, and a tension spring is arranged between the connecting pin and the support tube. A flange is arranged on the outer circumference of the support ring corresponding to the push rod, and a swing rod extending outward is fixed on the outer circumference of the support ring.

[0006] Wherein, one side of the friction block corresponding to the rotating shaft is serrated.

[0007] Both ends of the support tube are provided with end caps, each end cap has a center hole, and both ends of the rotating shaft pass through the corresponding center holes and extend outward. Both ends of the friction block are provided with push rods, and the end caps corresponding to the push rods are provided with radial through grooves, and the push rods pass through the corresponding radial through grooves and extend outward. The outer sides of the end caps are provided with support rings, and there are connecting rods between the connecting pins in the arc grooves corresponding to the two end caps, and there are swing rods on the support rings, and there is a pressure wheel rod between the outer ends of the two swing rods.

[0008] There are two friction blocks, which are respectively located above and below the rotating shaft. There are compression springs between the outer wall of the friction block and the inner wall of the support tube. There are push rods at the ends of the friction blocks, and flanges are provided on the outer circumferential surface of the support ring corresponding to the push rods.

[0009] A mounting frame is arranged on the outer circumferential surface of the support tube.

[0010] The above solution has the following advantages:

[0011] Since the support tube of the passive unlocking active self-locking mechanism of the present invention has an end cap, a rotating shaft, an arc-shaped friction block in the support tube, a compression spring between the outer wall of the friction block and the inner wall of the support tube, a push rod arranged along the axial direction of the support tube at the end of the friction block, a radial through groove on the end cap corresponding to the push rod, the push rod extends to the outside of the end cap through the radial through groove, a support ring is concentrically arranged on the outside of the end cap, and no less than two arc grooves are sequentially arranged along the circumference of the end cap on the section of the end cap corresponding to the support ring, a connecting pin is provided on the support ring corresponding to the arc groove, one end of the connecting pin is located in the arc groove, a tension spring is provided between the connecting pin and the support tube, a flange is provided on the outer circumference of the section of the support ring corresponding to the push rod, and a swing rod extending outward is fixed on the outer circumference of the support ring. When in use, the rotating shaft is connected to a conveying chain and a conveying shaft for storing goods such as storage shelves and conveyors. When passively unlocking, the swing rod is pulled by external force, thereby rotating the support ring, so that the flange pushes the push rod to drive the friction block to rotate to the side away from the rotating shaft, and the friction block leaves the rotating shaft. At this time, the rotating shaft can rotate freely, realizing passive unlocking. When actively self-locking, the external force is removed, the tension spring drives the support ring to reset, the flange leaves the push rod, and under the action of the compression spring, the friction block presses the rotating shaft, thereby realizing automatic locking. The passive unlocking active self-locking mechanism does not need to install an electric device as a power source, has a simple structure, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the passive unlocking active self-locking mechanism of the present invention;

[0013] Figure 2 It is an exploded schematic diagram of the passive unlocking active self-locking mechanism of the present invention after omitting the rotating shaft;

[0014] Figure 3 It is a structural schematic diagram of the passive unlocking active self-locking mechanism of the present invention in which the friction block and the rotating shaft are in a locked state;

[0015] Figure 4 It is a structural schematic diagram of the passive unlocking active self-locking mechanism of the present invention in which the friction block and the rotating shaft are in an unlocked state. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0017] like Figures 1 to 4 As shown, the passive unlocking active self-locking mechanism of the present invention comprises a horizontally arranged support tube 4, an end cap 8 is arranged on the support tube 4, a rotating shaft 13 is arranged concentrically in the support tube 4, the outer diameter of the rotating shaft 13 is smaller than the inner diameter of the support tube 4, the end cap 8 corresponding to the rotating shaft 13 has a center hole, the rotating shaft 13 passes through the corresponding center hole and extends out of the support tube 4, and the rotating shaft 13 and the center hole are in a rotational fit. An arc-shaped friction block 10 is arranged concentrically with the support tube 4, the friction block 10 is located between the inner side wall of the support tube 4 and the rotating shaft 13, and a compression spring 9 is arranged between the outer side wall of the friction block 10 and the inner side wall of the support tube 4. A push rod 11 is arranged axially along the support tube 4 at the end of the friction block 10, and a radial through groove 12 is arranged on the end cap 8 corresponding to the push rod 11, and the push rod 11 passes through the radial through groove 12 and extends to the outside of the end cap 8, and the push rod 11 and the radial through groove 12 are in a sliding fit. A support ring 2 is concentrically arranged on the outer side of the end cover 8. On the section of the end cover 8 corresponding to the support ring 2, there are at least two arc grooves 15 arranged in sequence along the circumference of the end cover 8. The arc grooves 15 are concentrically arranged with the support tube 4. A connecting pin 14 is arranged on the support ring 2 corresponding to the arc groove 15. One end of the connecting pin 14 is located in the arc groove 15, and the connecting pin 14 and the arc groove 15 are matched in a circumferential rotation and axial fixation along the support tube 4. A tension spring 5 is arranged between the connecting pin 14 and the support tube 4. A flange 3 is arranged on the outer circumference of the support ring 2 corresponding to the push rod 11, and a swing rod 7 extending outward is fixed on the outer circumference of the support ring 2.

[0018] One side of the friction block 10 corresponding to the rotating shaft 13 is serrated.

[0019] Both ends of the support tube 4 are provided with end caps 8, each end cap 8 has a center hole, and both ends of the rotating shaft 13 extend outward through the corresponding center holes. Both ends of the friction block 10 are provided with push rods 11, and each end cap 8 corresponding to the push rod 11 has a radial through groove 12, and each push rod 11 extends outward through the corresponding radial through groove 12. The outer side of the end cap 8 is provided with a support ring 2, and a connecting rod 16 is provided between the connecting pins 14 in the arc grooves 15 corresponding to the two end caps 8, and a swing rod 7 is provided on the support ring 2, and a pressure wheel rod 6 is provided between the outer ends of the two swing rods 7.

[0020] There are two friction blocks 10, which are respectively located above and below the rotating shaft 13. There are compression springs 9 between the outer wall of the friction block 10 and the inner wall of the support tube 4. There are push rods 11 at the ends of the friction blocks. There are flanges 3 on the outer circumferential surface of the support ring 2 corresponding to the push rod 11.

[0021] A mounting frame 1 is disposed on the outer circumferential surface of the support tube 4 .

[0022] When in use, the rotating shaft 13 is connected to the conveying chain and conveying shaft of the storage shelves, conveyors, etc. for storing goods. When passively unlocking, the swing rod 7 is pulled by external force to rotate the support ring 2, so that the flange 3 pushes the push rod 11 to drive the friction block 10 to rotate to the side away from the rotating shaft 13, and the friction block 10 leaves the rotating shaft 13. At this time, the rotating shaft 13 can rotate freely, realizing passive unlocking. When actively self-locking, the external force is removed, the tension spring 5 drives the support ring 2 to reset, the flange 3 leaves the push rod 11, and under the action of the compression spring 9, the friction block 10 presses the rotating shaft 13 to realize automatic locking.

[0023] The passive unlocking active self-locking mechanism of the present invention achieves the purpose of braking the transmission shaft by cooperating the serrated inner surface of the friction block 10 with the rotating shaft 13. The running direction of the friction block 10 is perpendicular to the braking force direction, avoiding damage to the compression spring 9 and increasing the reliability of the mechanism.

Claims

1. A passive unlocking active self-locking mechanism, characterized in that The invention comprises a horizontally arranged support tube (4), an end cover (8) is provided on the support tube (4), a rotating shaft (13) is coaxially arranged in the support tube (4), the outer diameter of the rotating shaft (13) is smaller than the inner diameter of the support tube (4), a center hole is provided on the end cover (8) corresponding to the rotating shaft (13), the rotating shaft (13) passes through the corresponding center hole and extends out of the support tube (4), and the rotating shaft (13) and the center hole are matched in a rotating manner; an arc-shaped friction block (10) is provided in the support tube (4), the friction block (10) and the support tube (4) are concentrically arranged, the friction block (10) is located between the inner side wall of the support tube (4) and the rotating shaft (13), and a compression spring (9) is provided between the outer side wall of the friction block (10) and the inner side wall of the support tube (4); a push rod (11) is provided at the end of the friction block (10) and is arranged along the axial direction of the support tube (4), a radial through groove (12) is provided on the end cover (8) corresponding to the push rod (11), and the push rod (11) is provided with a radial through groove (12). ) passes through the radial through groove (12) and extends to the outside of the end cover (8), and the push rod (11) and the radial through groove (12) are in sliding engagement; a support ring (2) is concentrically arranged on the outside of the end cover (8), and at least two arc grooves (15) are sequentially arranged along the circumference of the end cover (8) on the section of the end cover (8) corresponding to the support ring (2), and the arc grooves (15) and the support tube (4) are concentrically arranged, and a connecting pin (14) is provided on the support ring (2) corresponding to the arc groove (15), and one end of the connecting pin (14) is located in the arc groove (15), and the connecting pin (14) and the arc groove (15) are in rotational engagement along the circumferential direction of the support tube (4) and axially fixed engagement, and a tension spring (5) is provided between the connecting pin (14) and the support tube (4); a flange (3) is provided on the outer circumferential surface of the section of the support ring (2) corresponding to the push rod (11), and a swing rod (7) extending outward is fixed on the outer circumference of the support ring (2).

2. The passive unlocking active self-locking mechanism according to claim 1, characterized in that One side of the friction block (10) corresponding to the rotating shaft (13) is serrated.

3. The passive unlocking active self-locking mechanism according to claim 1, characterized in that Both ends of the support tube (4) are provided with end covers (8), each end cover (8) is provided with a center hole, and both ends of the rotating shaft (13) pass through the corresponding center holes and extend outward; both ends of the friction block (10) are provided with push rods (11), each end cover (8) corresponding to the push rod (11) is provided with a radial through groove (12), and each push rod (11) passes through the corresponding radial through groove (12) and extends outward; each end cover (8) is provided with a support ring (2) on the outer side, and a connecting rod (16) is provided between the connecting pins (14) in the arc grooves (15) corresponding to the two end covers (8), and each support ring (2) is provided with a swing rod (7), and a pressure wheel rod (6) is provided between the outer ends of the two swing rods (7).

4. The passive unlocking active self-locking mechanism according to claim 1, characterized in that There are two friction blocks (10), which are respectively located above and below the rotating shaft (13). A compression spring (9) is provided between the outer wall of the friction block (10) and the inner wall of the support tube (4). A push rod (11) is provided at the end of the friction block (10). A flange (3) is provided on the outer circumferential surface of the support ring (2) corresponding to the push rod (11).

5. The passive unlocking active self-locking mechanism according to any one of claims 1 to 4, characterized in that A mounting frame (1) is provided on the outer circumferential surface of the support tube (4).

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