CN112678175A - Locking mechanism and locking method thereof - Google Patents
Locking mechanism and locking method thereof Download PDFInfo
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- CN112678175A CN112678175A CN202110045490.7A CN202110045490A CN112678175A CN 112678175 A CN112678175 A CN 112678175A CN 202110045490 A CN202110045490 A CN 202110045490A CN 112678175 A CN112678175 A CN 112678175A
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Abstract
A locking mechanism and a locking method thereof comprise a driving device, a central shaft, a self-locking rod, a lock catch and a sling device; one end of the central shaft is connected with a driving device, the driving device can drive the central shaft to vertically move, the other end of the central shaft is connected with a self-locking rod, the lower part of the self-locking rod is hinged with the lock catch, the self-locking rod can drive the lock catch to open and close by moving, and a sling device is arranged at an opening of the lock catch. The locking mechanism is in a normally open state, when goods need to be hung, a sling rope joint connected with the goods is inserted into the locking mechanism, the proximity sensor senses the sling rope joint, the hydraulic action cylinder acts to drive the self-locking rod to enter a locking dead angle, and the sling rope joint is locked by the lock catch, so that the hanging is realized. The operation is simple, the mounting is convenient, and the rapid and reliable mounting can be realized even under the conditions of small space of the belly of the helicopter and poor visual field.
Description
Technical Field
The invention belongs to the field of external hanging transportation of helicopters, and particularly relates to a locking mechanism and a locking method thereof.
Background
The helicopter is hung and flown outside, belongs to the high risk subject, and in the process of hanging and flying, a locking mechanism which is arranged in a helicopter belly cargo hook device and used for hanging and throwing is influenced by engine vibration, air flow and cargo swinging, and once the locking mechanism is automatically opened, the cargo can be accidentally thrown, the helicopter loses load suddenly, the helicopter is not stable in flying, flying accidents easily occur, and meanwhile, the fallen cargo can generate unpredictable consequences on the ground. The existing locking mechanism is mainly locked by friction force and spring acting force generated by cargo load and can be reliably locked under static state, but the reliability is not high under dynamic loads such as vibration, impact and the like in the process of hanging and flying, and the condition that the locking mechanism is accidentally opened can occur.
Disclosure of Invention
The present invention is directed to a locking mechanism and a locking method thereof to solve the above problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a locking mechanism comprises a driving device, a central shaft, a self-locking rod, a lock catch and a sling device; one end of the central shaft is connected with a driving device, the driving device can drive the central shaft to vertically move, the other end of the central shaft is connected with a self-locking rod, the lower part of the self-locking rod is hinged with the lock catch, the self-locking rod can drive the lock catch to open and close by moving, and a sling device is arranged at an opening of the lock catch.
Furthermore, the self-locking rod is composed of two straight rods, one ends of the two straight rods are hinged to form a herringbone self-locking rod, and the central shaft is fixedly connected with the hinged position of the self-locking rod; the other ends of the two straight rods are respectively hinged with a lock catch.
Further, the hasp is two L type poles, and one end of two L type poles articulates respectively in the self-locking pole below, and two L type pole openings set up relatively, and the corner of two L type poles is provided with the supporting shoe.
Furthermore, the other end of the sling device, which comprises two L-shaped rods, is provided with a lock tongue.
Furthermore, the sling device comprises a sling joint boss, a sling rod and a sling joint, wherein the sling joint is arranged at the end part of the sling rod, and the cable joint boss is arranged in the middle of the sling rod.
Furthermore, the driving device comprises a hydraulic action cylinder, a transmission rod and a waist-shaped sleeve; one end of the hydraulic action cylinder is fixedly arranged, the output end of the hydraulic action cylinder is hinged with one end of the transmission rod, the other end of the transmission rod is hinged with the waist-shaped sleeve, and the waist-shaped sleeve is fixedly arranged on the central shaft.
Furthermore, the middle part of the transmission rod is provided with an external supporting point to form a lever mechanism.
Further, inside step and the proximity sensor of being provided with of hasp, the bottom of center pin is provided with the boss, and when the center pin downstream, boss and step contact.
Further, a locking method of a locking mechanism includes the steps of:
the locking mechanism is in a normally open state, when goods need to be hung, a sling rope joint connected with the goods is inserted into the locking mechanism, after the proximity sensor senses the sling rope joint, the driving device retracts to drive the transmission rod to rotate anticlockwise, the central shaft is pushed to move downwards, and then the self-locking rod drives the lock catch to close to lock the sling rope joint;
when the hung goods need to be put in, the driving device is extended out or the transmission rod is manually operated to enable the transmission rod to rotate clockwise, the central shaft is driven to stand up and move upwards, the self-locking rod is separated from the dead angle of the lock, the lock catch is opened, the lug boss of the sling joint loses the support of the lock tongue, and the sling joint automatically falls off under the action of gravity, so that the hung goods are put in.
Compared with the prior art, the invention has the following technical effects:
the locking mechanism is a mechanism which can reliably lock a sling rope joint in the process of hanging and flying by using a lock dead angle generated after the mechanism is locked and driving and locking generated by the hydraulic action cylinder, and has the advantages of effective throwing function, simple structure, reliable locking and convenient use. The device mainly comprises a hydraulic action cylinder for generating driving force, a manual lever operated manually, a central shaft capable of moving up and down, a self-locking lever generating a locking dead angle with the central shaft, a lock catch for locking a sling connector, a proximity sensor for sensing the sling connector, a sling connector connected with goods and the like. The locking mechanism is in a normally open state, when goods need to be hung, the sling joint connected with the goods is inserted into the locking mechanism, the proximity sensor senses that the sling is connected, the hydraulic action barrel acts to drive the self-locking rod to enter a dead locking angle, and the lock catch locks the sling joint to realize hanging. The operation is simple, the mounting is convenient, and the rapid and reliable mounting can be realized even under the conditions of small space of the belly of the helicopter and poor visual field.
Furthermore, if the self-locking rod does not enter the dead locking angle, namely the sling rope joint is not locked by the lock catch, the sling rope joint automatically falls off under the action of gravity and cannot be mounted, so that the self-locking sling rope joint has the function of prompting an operator, the situation that the mounting is unreliable is prevented, and the accidental throwing phenomenon occurs in the flying process;
furthermore, after the self-locking rod enters the dead locking angle, the dead locking force is in direct proportion to the hanging load, the dead locking force exists as long as the hanging load exists, the hanging load exists all the time in the hanging flight process, the dead locking force also exists all the time, the sling joint can be locked all the time by the lock catch, and the phenomenon of accidental throwing cannot occur. Meanwhile, as long as the proximity sensor senses the sling joint, the hydraulic action cylinder always generates locking drive, and the lock catch is ensured not to be opened. Therefore, the reliability of the dual-redundancy locking mechanism which locks by the structure and drives to lock is very high, and the accidental throwing phenomenon can not occur in the hanging flight process;
furthermore, the proximity sensor monitors the position of the sling rope joint in real time, feeds the position back to the helicopter comprehensive display, displays the opening and closing state of the locking mechanism, and has a prompt effect on pilots and operators.
Furthermore, when the hung goods need to be put in, after the dead locking force is overcome through the hydraulic action cylinder or the manual lever operated manually, the self-locking lever is separated from the dead locking angle, the lock catch is opened, the sling cable joint loses the support, and automatically falls off under the action of gravity, so that the hung goods are put in. The locking mechanism can be used for reliably hanging and simultaneously and effectively throwing the load when the load needs to be thrown.
Drawings
FIG. 1 is a schematic view of the locking mechanism of the present invention;
FIG. 2 is a schematic view of the locking mechanism of the present invention in a closed position;
FIG. 3 is a schematic view of the locking mechanism of the present invention;
fig. 4 is a schematic view of the opening principle of the locking mechanism of the present invention.
Detailed Description
The invention ensures reliable suspension in the suspension flight process by using the lock dead angle generated after the mechanism is locked and the driving locking generated by the hydraulic action cylinder, can effectively put in load when needing to put in, and has simple structure, reliable locking and convenient use.
As shown in fig. 1, the locking mechanism mainly comprises a hydraulic actuating cylinder 1 for generating driving force, a manually operated transmission rod 2, a central shaft 3 capable of moving up and down, a self-locking rod 4 generating a locking dead angle with the central shaft 3, a locking sling connector 7, a proximity sensor 6, a cable connector boss connected with goods and the like. When the central shaft 3 moves downwards, the angles of the two straight rods of the self-locking rod 4 are increased, the two L-shaped rods of the lock catch 5 are unfolded, and the lower ends of the two L-shaped rods of the lock catch 5 are driven to be folded, so that the locking is realized.
One end of the hydraulic action cylinder 1 is fixed through a hinge, the other end of the hydraulic action cylinder is hinged with the transmission rod 2, and after the hydraulic action cylinder 1 receives an instruction of the control unit, the hydraulic action cylinder extends out or retracts to drive the transmission rod 2 to rotate, so that the driving mechanism is locked or unlocked. The operator can also operate the drive mechanism of the transmission rod 2 to lock or unlock. The central shaft 3 is a vertical motion rod, the connection part with the transmission rod 2 is a waist-shaped structure 8, the vertical motion can be flexibly realized without the influence of the transverse displacement generated by the rotation of the transmission rod 2, the lower part is hinged with the self-locking rod 4, the head part is a boss 9, the mechanism is contacted with a step 10 when being locked, as shown in figure 3, the locking force 2F generated by the gravity G of the hung goods on the mechanismYThe load is converted into the internal force of the mechanism, and the influence of the load on the upper transmission mechanism and the hydraulic action barrel 1 is reduced. The self-locking rods 4 are two force rod pieces which are symmetrically distributed left and right, and when the included angle between the self-locking rods and the central shaft 3 is smaller than 90 degrees in the mechanism movement process, the self-locking rods enter a locking angle to generate a downward locking force 2FY. The lock catches 5 are distributed in bilateral symmetry and rotate along with the movement of the self-locking rod 4, and the suspension or release is realized by locking or releasing the sling joint boss 12 through the opening and closing of the lock tongue 11. A proximity sensor 6 is arranged in the mechanism and used for sensing a sling connector 7, the control unit controls the hydraulic actuating cylinder 1 to extend or retract according to sensed signals, and the helicopter comprehensive display device controls the hydraulic actuating cylinder 1 to extend or retract according to the signalsAnd displaying the opening and closing state of the locking mechanism, and prompting pilots and operators.
As shown in fig. 1 and 2, the locking mechanism is in a normally open state, when a cargo needs to be hung, the sling joint 7 connected with the cargo is inserted into the locking mechanism, after the proximity sensor 6 senses the sling joint 7, the control unit sends an instruction to the hydraulic action cylinder 1, the hydraulic action cylinder 1 is retracted to drive the transmission rod 2 to rotate anticlockwise, the central shaft 3 is pushed to move downwards, and then the self-locking rod 4 drives the lock catch 5 to be closed to lock the sling joint 7.
As shown in figure 3, when the lock catch 5 locks the sling rope joint 7, the included angle between the self-locking rod 4 and the central shaft 3 is smaller than 90 degrees, the sling rope enters a locking angle, and the gravity G of goods is transmitted through a mechanism to generate a downward locking force 2FYBecause the gravity of the goods always exists, the lock catch 5 can be ensured to always lock the sling joint 7, and the phenomenon of accidental opening can not occur. Meanwhile, the proximity sensor 6 senses the sling rope joint 7, the control unit sends a withdrawing instruction to the hydraulic action cylinder 1 all the time, locking driving is generated, and the lock catch 5 is guaranteed not to be opened. The helicopter integrated display collects the output signal of the proximity sensor 6 and displays the opening and closing state of the locking mechanism.
As shown in figure 4, when the suspended goods need to be thrown in, an extending instruction is sent to the hydraulic action cylinder 1 or the transmission rod 2 is manually operated to enable the transmission rod 2 to rotate clockwise, the central shaft 3 is driven to stand up and move upwards, and the locking force 2F is overcomeYAnd then, the self-locking rod 4 is separated from the dead lock angle, the lock catch 5 is opened, the sling joint boss 12 loses the support of the lock tongue 11 and automatically falls off under the action of gravity, and the hung goods are put in.
Claims (9)
1. A locking mechanism is characterized by comprising a driving device, a central shaft (3), a self-locking rod (4), a lock catch (5) and a sling device; one end of the central shaft (3) is connected with a driving device, the driving device can drive the central shaft to vertically move, the other end of the central shaft (3) is connected with a self-locking rod (4), the lower part of the self-locking rod (4) is hinged with a lock catch (5), the self-locking rod (4) can be moved to drive the lock catch (5) to be opened and closed, and a sling device is arranged at an opening of the lock catch (5).
2. The locking mechanism according to claim 1, wherein the self-locking rod (4) is two straight rods, one ends of the two straight rods are hinged to form a herringbone self-locking rod (4), and the central shaft (3) is fixedly connected with the hinged part of the self-locking rod (4); the other ends of the two straight rods are respectively hinged with a lock catch (5).
3. A locking mechanism according to claim 2, wherein the shackle (5) is formed by two L-shaped bars, one end of each L-shaped bar is hinged below the self-locking bar (4), the openings of the two L-shaped bars are opposite, and the corners of the two L-shaped bars are provided with support blocks.
4. A locking mechanism according to claim 3, wherein the sling means comprises two L-shaped bars each provided at the other end with a locking tongue (11).
5. A locking mechanism according to claim 1, wherein the sling device comprises a sling attachment boss (12), a sling rod and a sling attachment (7), the sling attachment (7) being provided at an end of the sling rod, the cable attachment boss (12) being provided at a central portion of the sling rod.
6. A locking mechanism according to claim 1, characterized in that the drive means comprise a hydraulic cylinder (1), a transmission rod (2) and a kidney sleeve (8); one end of the hydraulic action cylinder (1) is fixedly arranged, the output end of the hydraulic action cylinder (1) is hinged with one end of the transmission rod (2), the other end of the transmission rod (2) is hinged with the waist-shaped sleeve (8), and the waist-shaped sleeve (8) is fixedly arranged on the central shaft (3).
7. A locking mechanism according to claim 6, characterized in that the middle of the transmission rod (2) is provided with an outer support point, forming a lever mechanism.
8. A locking mechanism according to claim 5, characterized in that the inside of the catch (5) is provided with a step (10) and a proximity sensor (6), the bottom of the central shaft (3) is provided with a boss (9), and the boss (9) is in contact with the step (10) when the central shaft (3) is moved downwards.
9. A locking method of a locking mechanism, characterized in that a locking mechanism according to any one of claims 1 to 8, comprises the steps of:
the locking mechanism is in a normally open state, when goods need to be hung, a sling rope joint (7) connected with the goods is inserted into the locking mechanism, after the proximity sensor (6) senses the sling rope joint (7), the driving device is retracted to drive the transmission rod (2) to rotate anticlockwise, the central shaft (3) is pushed to move downwards, and then the self-locking rod (4) drives the lock catch (5) to be closed to lock the sling rope joint (7);
when the hung goods need to be put in, the driving device stretches out or the transmission rod (2) is manually operated to enable the transmission rod (2) to rotate clockwise, the central shaft (3) is driven to stand up to move upwards, the self-locking rod (4) is separated from a locking dead angle, the lock catch (5) is opened, the sling joint boss (12) loses the support of the lock tongue (11), and the sling joint boss automatically falls off under the action of gravity, so that the hung goods are put in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110045490.7A CN112678175A (en) | 2021-01-13 | 2021-01-13 | Locking mechanism and locking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110045490.7A CN112678175A (en) | 2021-01-13 | 2021-01-13 | Locking mechanism and locking method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112678175A true CN112678175A (en) | 2021-04-20 |
Family
ID=75458060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110045490.7A Pending CN112678175A (en) | 2021-01-13 | 2021-01-13 | Locking mechanism and locking method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112678175A (en) |
-
2021
- 2021-01-13 CN CN202110045490.7A patent/CN112678175A/en active Pending
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