CN111373863B

CN111373863B - Spiral quick connection locking mechanism

Info

Publication number: CN111373863B
Application number: CN200910121564.XA
Authority: CN
Inventors: 季宝锋; 范新中; 佟文敏; 石玉红; 阳志光
Original assignee: Beijing Institute of Astronautical Systems Engineering
Current assignee: Beijing Institute of Astronautical Systems Engineering
Priority date: 2009-06-15
Filing date: 2009-06-15
Publication date: 2013-10-16
Anticipated expiration: 2029-06-15

Abstract

The invention discloses a spiral quick-connection locking mechanism which comprises a main shaft, a locking nut, a sliding shaft, a sliding block, a clamping pin, a spring, a locking pin, a rubber pad, a clamping spring and a self-locking nut. The upper part of the main shaft is provided with a pair of sliding grooves, a pair of clamping pins capable of freely sliding along the sliding grooves are arranged in the sliding grooves, the upper part of the main shaft is provided with a locking nut, the locking pins are tightly pressed by the self-locking nut, clamping pin grooves are formed in the sliding grooves, which are at an angle of 45 degrees, of the main shaft, the clamping pin grooves are communicated with the clamping pin holes, a sliding shaft is arranged in the main shaft, and the upper end of the sliding shaft is provided with an inverted concave clamping pin extending to the bottom of the clamping pin holes. The lower end of the sliding shaft is provided with a spring which is connected with a sliding block, and the lower end of the sliding block is fixed by a clamp spring. The invention has compact mechanism, light weight, small volume, strong adaptability, reliable connection, three-dimensional locking function, capability of realizing quick locking and quick opening, capability of bearing vibration environment, internal and external pressure resistance and axial pressure load resistance and good antimagnetic shielding effect.

Description

Spiral quick connection locking mechanism

Technical Field

The invention belongs to the field of mechanical design, and particularly relates to a spiral type quick connection locking mechanism.

Background

In modern life, the places like doors and windows, wall circuit boxes, fire hydrant boxes and the like which need to use an opening/closing structure are numerous, and the places need to use a quick connecting device to meet the requirements of frequent opening/closing, safety and the like. The locking device used at present is mainly designed aiming at a plane or regular-shaped cover and a mouth frame structure, the locking is also positioned and locked mostly aiming at one direction or two directions, and the locking is not performed in other directions or is locked by adopting the self position jacking action. The frame connecting structure has the following disadvantages: the connecting structure is not suitable for connecting port covers and port frames with non-planar or irregular shapes; the three-direction three-dimensional positioning locking cannot be realized, particularly, the mouth frame and the mouth cover which are required to be quickly connected, extremely reliably locked, strongly vibrated, resistant to internal pressure and external pressure loading on special products such as rockets, missiles and the like are required, the mouth cover needs to be sealed, resistant to nuclear electromagnetic pulse and other conditions, and the requirements cannot be met by means of connecting mechanisms such as bolts, rotary locks, snap locks and the like in the prior art.

Disclosure of Invention

The purpose of the invention is as follows: the utility model provides a spiral quick connect locking mechanism that has the reliability, can bear strong vibration environment, strong internal and external pressure, can adapt to the flap of different curved surfaces, different shapes, different thickness, realizes quick locking, opens fast, the three-dimensional locking of tribit to replace the bolt that uses at present and add the connected mode of layer board self-locking nut.

The technical scheme for realizing the purpose of the invention is as follows: a spiral quick connection locking mechanism comprises a main shaft, a locking nut, a sliding shaft, a sliding block, a clamping pin, a spring, a locking pin, a rubber pad, a clamping spring and a self-locking nut; the main shaft is hollow, the upper part of the main shaft is provided with a pair of sliding grooves which are three sections of a vertical groove, a spiral groove and a flat groove from top to bottom in sequence, a clamping pin groove is formed in the upper end face of the main shaft, the upper end face of the main shaft forms an included angle of 45 degrees with the spiral groove, the clamping pin groove is communicated with a clamping pin hole, and the lower end of the clamping pin hole is lower than the flat groove; the inner part of the main shaft is of a three-step cylinder structure, a first step is arranged slightly below the horizontal line from the upper end face of the main shaft to the bottom of the clamping pin hole, the inner diameter of the first step is the smallest, a second step is arranged downwards to the large end of the outer diameter of the lower part of the main shaft, the inner diameter of the second step is slightly larger, and finally a third step is arranged at the bottom of the main shaft, and the inner diameter of the third step is the largest; a sliding shaft is arranged in the main shaft, and the upper end of the sliding shaft is connected with a clamping pin in an inverted concave shape and extends to the bottom of the clamping pin hole through the clamping pin groove; the lower end of the sliding shaft is sleeved with a spring, the lower surface of the spring is connected with a sliding block sleeved on the sliding shaft, and the lower end of the sliding block is jacked by a clamp spring fixed on the sliding shaft; the upper part of the spring is propped against the upper end of the second step, and one part of the sliding block is positioned in a cavity with the largest inner diameter at the bottom of the main shaft; the flat groove of the main shaft is provided with a pair of lock pins which are arranged on the lock nuts and can freely slide along the sliding grooves, the upper part of the main shaft is provided with the lock nuts, and the lock pins are tightly propped by self-locking nuts at two ends of the lock nuts.

The lock pin and the lock nut are in interference fit and are in gluing connection, and the lock pin is tightly propped and anti-loose by the self-locking nuts at the two ends of the lock nut.

The pair of spiral grooves on the main shaft can be manufactured in a right-handed mode or a left-handed mode.

The invention has the following beneficial effects: (1) compared with the existing cover connection locking device, the invention adopts a spiral locking design, the locking and opening processes are the same as those of a common bolt rotating for half a turn, and the functions of quick locking, quick opening and three-dimensional locking can be realized, which is very important for the coming number of missile weapons with strict requirement on combat time; (2) the invention can well lock and seal by adopting double-clamping-pin anti-loose devices, rubber pad pre-tightening devices and the like, and meanwhile, the rubber pad arranged at the opening cover/opening frame has a good anti-magnetic shielding effect, which is very important for the coming number of missile weapons requiring strict sealing and anti-electromagnetic pulse; (3) the mechanism is reliable in connection, can bear a vibration environment, and resists internal pressure, external pressure and axial pressure load; (4) the invention has compact mechanism, light weight, small volume and small installation space; (5) the invention has the advantages of more used components, convenient processing of non-standard components, easy assembly, easy maintenance and low cost.

Drawings

FIG. 1 is an assembly view of a screw quick connect locking mechanism;

FIG. 2 is an exploded view of the screw quick connect locking mechanism;

FIG. 3 is a cross-sectional view of the middle of the spiral quick connect locking mechanism;

FIG. 4 is a schematic view of the spindle of the screw quick connect locking mechanism;

FIG. 5 is a C-C sectional view of the spindle;

fig. 6 is a top view of the spindle.

Wherein, 1-main shaft; 2-locking the nut; 3-a sliding shaft; 4-a slide block; 5-a bayonet lock; 6-a spring; 7-a lock pin; 8-rubber pad; 9-a clamp spring; 10-self-locking nut; 11-double spiral grooves; 12-a vertical slot; 13-flat groove; 14-bayonet lock; 15-a slide hole; 16-a bayonet slot.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the screw-type quick-connection locking mechanism of the present invention comprises a main shaft 1, a lock nut 2, a sliding shaft 3, a sliding block 4, a detent 5, a spring 6, a locking pin 7, a rubber pad 8, a snap spring 9 and a self-locking nut 10. As shown in fig. 3, the main shaft 1 is integrally a stepped cylinder, and the main shaft is hollow, the upper portion of the main shaft 1 is provided with a pair of sliding grooves, and three sections of the vertical groove 12, the spiral groove 11 and the flat groove 13 are sequentially arranged from top to bottom, so that the main shaft can be made into a left-handed rotation or a right-handed rotation. As shown in fig. 5 and 6, a latch groove 16 is formed at the upper end of the main shaft 1 at an angle of 45 ° to the slide groove. As shown in fig. 7, the catch groove 16 communicates with the catch pin hole 14, and the lower end of the catch pin hole 14 is lower than the flat groove 13. The inside of main shaft 1 is the drum structure of three-step, and the level is now slightly lower from the up end of main shaft 1 to the bottom of card pinhole 14 and is the first step, and its inner diameter is minimum, and the second step is located to main shaft 1 lower part external diameter main aspects department again, and its inner diameter is slightly bigger, and it is the third step to the bottom of main shaft 1 at last, and its inner diameter is the biggest. As shown in figure 3, a sliding shaft 3 is arranged in a main shaft 1, the sliding shaft 3 is matched with the inner diameter of the upper part of the main shaft 1 and can freely slide up and down, a bayonet 5 in an inverted 'concave' shape is arranged at the upper end of the sliding shaft 3, and the bayonet 5 penetrates through a bayonet groove 16 and extends to the bottom of a bayonet hole 14. The lower part of the spring 6 is connected with the sliding block 4 sleeved on the sliding shaft 3, and the lower end of the sliding block 4 is fixed by a clamp spring 9 fixed on the sliding shaft 3. The upper part of the spring 6 is propped against the upper end of the second step, and one part of the sliding block 4 is positioned in a cavity with the largest inner diameter at the bottom of the main shaft 1, so that the locking and unlocking by a special inner hexagonal tool are facilitated. A pair of lockpins 7 which are arranged on the locknut 2 and can freely slide along the sliding groove are arranged at the flat groove 13 of the main shaft 1, the locknut 2 is arranged at the upper part of the main shaft 1, the locknut 2 is a standard component and can be selected according to the actual size, the lockpins 7 and the locknut 2 are in interference fit and are in gluing connection, and the locknuts 7 are tightly propped and are prevented from loosening by self-locking nuts 10 at the two ends of the locknut 2.

The working principle of the spiral quick connection locking mechanism provided by the invention is as follows: as shown in fig. 1, 2 and 3, the whole locking mechanism is similar to a bolt-nut type connection, the main shaft 1 is similar to a bolt, two spiral grooves on the main shaft 1 correspond to half-circle thread grooves with large thread pitches, and two lock pins 7 on the locking nut 2 correspond to a short external thread matched with the spiral grooves on the main shaft 1. When the locking is required, firstly, an inner hexagonal tool is inserted into the rear end of the main shaft 1, the sliding shaft 3 is pushed inwards, the sliding block 4 compresses the spring 6 inwards, the sliding shaft 3 moves inwards to drive the bayonet 5 to move inwards to unlock, and then the spiral groove on the main shaft 1 is formed into a complete spiral groove. Then, the spiral groove of the main shaft 1 is clamped into the lock pin 7 on the lock nut 2, the main shaft 1 is rotated, the main shaft 1 is fixed by the lock nut 2 and then enters inwards along the spiral groove under the limit of the lock pin 7, when the main shaft is rotated 180 degrees, the mechanism is locked when the lock pin 7 enters the flat groove 13 at the bottom end of the spiral groove of the main shaft 1, the inner hexagonal tool is loosened after the main shaft is locked, the spring 6 pushes the sliding shaft 3, the sliding block 4 and the clamping pin 5 to move outwards and restore the original shape, the clamping pin 5 seals the two lock pins 7 on the lock nut 2 at the bottom end of the flat groove 13 of the spiral groove on the main shaft 1, and thus the spiral groove is sealed, namely the spiral groove 11. Even if the main shaft 1 rotates in the opposite direction, the lock pin 7 cannot be screwed out, and the flat groove 13 reaches the spiral groove 11 to realize the locking and anti-loosening function of the mechanism. The inner hexagonal tool is inserted into the rear end of the main shaft 1, the bayonet 5 blocking the lock pin 7 is communicated with the inner unlocking type flat groove 13 and the spiral groove 11 and then rotates anticlockwise, so that the lock pin 7 on the lock nut 2 can rotate out of the spiral groove flat groove 13 and the spiral groove 11 in the main shaft 1, and the unlocking and opening functions of the mechanism are achieved. In the locking process, the rubber pad 8 on the main shaft 1 is compressed to generate pretightening force, the bearing capacity of the mechanism is determined by the shearing resistance of the two locking pins 7 on the locking nut 2, and the rubber pad 8 and the locking nut 2 are sealed in a double mode, so that the connecting mechanism can achieve the sealing and electromagnetic pulse resisting functions. The mechanism is equivalent to a quick connecting bolt, and the connecting length of the main shaft 1 is variable, so that the mechanism can meet the use requirements of cover opening frames with different sizes, different shapes and different thicknesses.

Compared with the existing flap connecting device, the invention has the advantages of light weight, small volume, small installation space, capability of locking and sealing, electromagnetic pulse resistance and very convenient use, and the locking and opening processes are the same as those of a rotating half-circle common bolt, so that the mechanism has very important practical value for missile weapons which have strict requirements on combat time and need sealing and electromagnetic pulse resistance. Meanwhile, the self-locking and anti-loosening device has self-locking and anti-loosening functions; the lock can be quickly locked or unlocked by unlocking and rotating for half a turn (180 degrees), and the operation is very simple and convenient; the double clamping pins are used for preventing looseness, three-direction three-dimensional locking is realized, a pre-tightening force is realized after locking, and the connection is very reliable; the bearing can be in a strong vibration environment and can resist the load requirements of internal pressure, external pressure, axial pressure and the like; the cover mouth frame can adapt to the use of cover mouth frames with different curved surfaces, different shapes and different thicknesses; the device has the advantages of few parts, easy processing, easy assembly, easy maintenance and very low cost.

Claims

1. The utility model provides a spiral quick connect locking mechanism which characterized in that: the locking mechanism comprises a main shaft (1), a locking nut (2), a sliding shaft (3), a sliding block (4), a clamping pin (5), a spring (6), a locking pin (7), a rubber pad (8), a clamping spring (9) and a self-locking nut (10); the inner part of the main shaft (1) is hollow, the upper part of the main shaft (1) is provided with a pair of sliding grooves which are sequentially a vertical groove (12), a spiral groove (11) and a flat groove (13) from top to bottom, the upper end surface of the main shaft (1) forming an included angle of 45 degrees with the spiral groove (11) is provided with a clamping pin groove (16), the clamping pin groove (16) is communicated with a clamping pin hole (14), and the lower end of the clamping pin hole (14) is lower than the flat groove (13); the inner part of the main shaft (1) is of a three-step cylinder structure, a first step is arranged slightly below the horizontal line from the upper end face of the main shaft (1) to the bottom of the clamping pin hole (14), the inner diameter of the first step is the smallest, a second step is arranged downwards to the large end of the outer diameter of the lower part of the main shaft (1), the inner diameter of the second step is slightly larger, and finally a third step is arranged at the bottom of the main shaft (1), and the inner diameter of the third step is the largest; a sliding shaft (3) is arranged in the main shaft (1), and the upper end of the sliding shaft (3) is connected with a clamping pin (5) which is in an inverted concave shape and extends to the bottom of a clamping pin hole (14) through a clamping pin groove (16); a spring (6) is sleeved at the lower end of the sliding shaft (3), a sliding block (4) sleeved on the sliding shaft (3) is connected below the spring (6), and the lower end of the sliding block (4) is jacked by a clamp spring (9) fixed on the sliding shaft (3); the upper part of the spring (6) is propped against the upper end of the second step, and one part of the sliding block (4) is positioned in a cavity with the largest inner diameter at the bottom of the main shaft (1); a pair of lock pins (7) which are arranged on the lock nuts (2) and can freely slide along the sliding grooves are arranged at the flat grooves (13) of the main shaft (1), the lock nuts (2) are arranged at the upper part of the main shaft (1), and the lock pins (7) are tightly propped by self-locking nuts (10) at two ends of the lock nuts (2).

2. A screw-type quick connect locking mechanism according to claim 1 further comprising: the lock pin (7) is in interference fit with the lock nut (2) and is in gluing connection, and the lock pin is tightly jacked and prevented from loosening by self-locking nuts (10) at two ends of the lock nut (2).

3. A screw-type quick connect locking mechanism according to claim 1 further comprising: the pair of spiral grooves on the main shaft (1) can be manufactured by right-handed rotation or left-handed rotation.