CN109989626B - Safety lock and operation method thereof - Google Patents
Safety lock and operation method thereof Download PDFInfo
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- CN109989626B CN109989626B CN201910365774.7A CN201910365774A CN109989626B CN 109989626 B CN109989626 B CN 109989626B CN 201910365774 A CN201910365774 A CN 201910365774A CN 109989626 B CN109989626 B CN 109989626B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 292
- 238000004519 manufacturing process Methods 0.000 claims abstract description 76
- 230000002452 interceptive effect Effects 0.000 claims abstract description 5
- 230000006378 damage Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000004044 response Effects 0.000 description 6
- 230000003993 interaction Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/04—Spring arrangements in locks
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/14—Arrangement of several locks or locks with several bolts, e.g. arranged one behind the other
- E05B63/143—Arrangement of several locks, e.g. in parallel or series, on one or more wings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention relates to a man-machine separation safety protection device on an automatic production line, in particular to a safety lock and an operation method thereof. The safety lock comprises a main lock auxiliary mechanism and an auxiliary lock auxiliary mechanism, wherein the main lock mechanism, the auxiliary lock mechanism, the main lock auxiliary mechanism and the auxiliary lock auxiliary mechanism are fixed in a shell, and an interactive wiring terminal and an interlocking wiring terminal are arranged at the lower end of the shell; the auxiliary lock mechanism is arranged below the main lock mechanism, the mechanical interlocking mechanism is arranged between the auxiliary lock mechanism and the main lock mechanism, and the auxiliary lock mechanism and the main lock mechanism form pin type positioning through the mechanical interlocking mechanism. The existing safety lock mostly adopts the control principle of 'scram' to protect a protective door of an automatic production line for operators to enter and exit, mechanical damage is easy to cause, and a large amount of material consumption is caused by adding extra idle time in the production process.
Description
Technical Field
The invention relates to a man-machine separation safety protection device on an automatic production line, in particular to a safety lock and an operation method thereof.
Background
Along with the improvement of the current social industrial automation degree, the rapid development of production integration greatly improves the requirements on the continuity of industrial production and the interactivity of personnel, and accordingly, the personnel safety, the equipment safety and the unnecessary idle working time caused by the intervention of external personnel on an automatic production line become the bottlenecks for restricting the safe production and the efficient production. The prior safety lock mostly adopts the control principle of 'scram' to protect the protective door of an automatic production line for operators to enter and exit, and when operators need to enter the production line, the safety lock can roughly and emergently brake the internal equipment of the production line, so that mechanical equipment is not required to frequently face mechanical damage caused by on-load braking. Meanwhile, due to the passive interruption of the automatic cycle, the operators need to deal with additional auxiliary operation caused by the automatic passive interruption after finishing the current fault, and a large amount of material consumption can be caused by the additional idle time in the production process.
Disclosure of Invention
The invention aims to:
aiming at the defects of the technology, the invention provides the safety lock and the operation method thereof, which effectively avoid personal injury to operators caused by equipment false start when the operators enter the production line, and reduce the load impact damage to the operating mechanical equipment and unnecessary loss of idle materials and working hours in the personnel entering process. The problem that due to the fact that production material blocking occurs frequently, operators enter the production line to adjust materials and the operators enter the production line when the equipment runs, emergency stop impacts the equipment greatly, and personal casualties caused by false starting signals from the outside when the operators or maintenance personnel enter the production line to work are solved.
The technical scheme is as follows:
the safety lock comprises a main lock auxiliary mechanism and an auxiliary lock auxiliary mechanism, wherein the main lock mechanism, the auxiliary lock mechanism, the main lock auxiliary mechanism and the auxiliary lock auxiliary mechanism are fixed in a shell, an interactive wiring terminal and an interlocking wiring terminal are arranged at the lower end of the shell, the auxiliary lock mechanism is arranged below the main lock mechanism, a mechanical interlocking mechanism is arranged between the auxiliary lock mechanism and the main lock mechanism, and the auxiliary lock mechanism and the main lock mechanism form pin type positioning through the mechanical interlocking mechanism; one side of the main lock mechanism is provided with an electric interlocking mechanism which is clamped with a key shaft of the main lock when being electrified; the other side of the main lock mechanism is provided with a main lock auxiliary mechanism, and a main lock cam shaft of the main lock mechanism rotates to drive a main lock auxiliary contact boss of the main lock auxiliary mechanism to stretch out and draw back; an auxiliary lock mechanism is arranged on one side of the auxiliary lock mechanism, and an auxiliary lock cam shaft of the auxiliary lock mechanism drives an auxiliary lock auxiliary contact boss of the auxiliary lock mechanism to stretch out and draw back; the main lock mechanism is arranged above the main lock mechanism and rotates to drive the main lock mechanism to move up and down, so that the main lock mechanism and the bolt can be inserted and pulled out.
Further, the safety lock further comprises a shell, a scram button connected with a control host of the automatic production line and an indicator lamp, wherein the scram button is arranged on the shell, and the indicator lamp fixed on the shell is arranged above the scram button.
Further, the auxiliary lock mechanism comprises an auxiliary lock cam shaft and an auxiliary lock key core, a triangular auxiliary lock key shaft is arranged on the auxiliary lock key core arranged in the shell, circular grooves are formed in two ends of the auxiliary lock key core, and the auxiliary lock cam shaft moves circumferentially on the auxiliary lock key core through the circular grooves; the shaft auxiliary body of the auxiliary lock cam shaft is sleeved on the circular groove, and a shaft cap is fixed on the shaft auxiliary body; the shaft cap is in contact with the bottom end of the latch of the mechanical interlock.
Further, the main lock mechanism comprises a main lock cam shaft and a main lock key core, a triangular main lock key shaft is arranged on the main lock key core fixed in the shell, circular grooves are formed in two ends of the main lock key core, and the main lock cam shaft moves on the main lock key core along the circumferential direction through the circular grooves; the main lock cam shaft is contacted with the main lock locking mechanism, and the main lock cam shaft conducts the jacking force of the main lock cam shaft through the protruding end of the main lock locking mechanism.
Further, the mechanical interlocking mechanism comprises a clamping locking piece, a first sliding sleeve piece and a jacking mechanism, wherein the first sliding sleeve piece is fixed between the main locking mechanism and the auxiliary locking mechanism, the clamping locking piece is sleeved in the first sliding sleeve piece, the jacking mechanism is located under the first sliding sleeve piece, the clamping locking piece is connected with the middle of the jacking mechanism, the jacking mechanism moves up and down along with the clamping locking piece, first bow springs are respectively arranged at two ends of the jacking mechanism, one ends of the first bow springs are fixed through bolts of the first bow springs, and the other ends of the first bow springs are connected with the jacking mechanism.
Further, the electric interlocking mechanism comprises a second bow spring, a second hook hanging piece, a second sliding sleeve piece and an electromagnetic coil, one end of the second hook hanging piece is clamped on a key shaft of a main lock of the main lock mechanism, the other end of the second hook hanging piece is electrically adsorbed with the electromagnetic coil, the second hook hanging piece is close to the electromagnetic coil end and is provided with the second sliding sleeve piece, one end of the second bow spring is fixed above the second hook hanging piece through a second bow spring bolt, and the other end of the second bow spring is connected with the second hook hanging piece.
Further, the main lock locking mechanism comprises a first hook hanging piece, a lock hole, a third sliding sleeve piece and a return mechanism, the lock hole is arranged on the outer side of the shell, the lower end of the first hook hanging piece penetrates through the third sliding sleeve piece which is used for guiding the displacement of the main lock locking mechanism and is connected with the return mechanism, the return mechanism is sleeved on the first hook hanging piece, one end of a third bow spring is fixed through a third bow spring bolt, and the other end of the third bow spring is connected with the return mechanism; the protruding end of the first hook hanging piece is contacted with a main lock cam shaft of the main lock mechanism, so that the protruding end of the first hook hanging piece is driven to move up and down when the cam shaft rotates, and then the first hook hanging piece is driven to move up and down, and locking and unlocking of the door bolt are realized.
Further, the indicating lamp comprises a safety lock locking state indicating lamp, a main machine standby state indicating lamp and a safety lock unlocking state indicating lamp; the main lock auxiliary mechanism is connected with the safety lock locking state indicator lamp, the host is connected with the control host of the automatic production line through the standby state indicator lamp, and the safety lock unlocking state indicator lamp is connected with the main lock auxiliary mechanism.
A method of security lock operation, the method comprising the steps of:
step one: in a locking state, an auxiliary lock key is inserted into an auxiliary lock key shaft of an auxiliary lock mechanism, the auxiliary lock key drives an auxiliary lock cam to rotate anticlockwise, a jacking mechanism in contact with the auxiliary lock cam moves downwards, a locking piece is separated from a main lock key core, and a mechanical interlocking mechanism is unlocked;
the rotation of the auxiliary lock cam enables the auxiliary lock contact to send a stop signal to a control host of an automatic production line, the control host of the automatic production line feeds back a signal to the interlocking wiring terminal, an electric interlocking mechanism connected with the interlocking wiring terminal through a wire cuts off the power supply of the electromagnetic coil, a second bow spring drives a second hook piece to reset upwards, the clamping and the positioning of a key core of the main lock are disconnected, and the electric interlocking mechanism is unlocked;
step two: the main lock key is inserted into a main lock key shaft of the main lock mechanism, the main lock key drives the main lock cam to rotate clockwise, the convex end contacted with the main lock cam moves upwards, the convex end drives the first hook hanging piece to be separated from a bolt groove in the keyhole, and the bolt is pulled out from the keyhole to realize safe unlocking;
step three: when the main lock is needed to be locked again after use, the key of the main lock is rotated anticlockwise, and the first hook piece is inserted into the bolt groove to realize the locking of the main lock mechanism; the auxiliary lock key rotates clockwise to drive the auxiliary lock cam to rotate clockwise, the jacking mechanism contacted with the auxiliary lock cam moves upwards, the locking piece is contacted with the key core of the main lock, and the mechanical interlocking mechanism is locked;
The rotation of the auxiliary lock cam enables the auxiliary lock auxiliary contact to send an interlocking signal to a control host of the automatic production line, the control host of the automatic production line feeds back a signal to the interlocking wiring terminal, an electric interlocking mechanism connected with the interlocking wiring terminal through a wire is communicated with a power supply of the electromagnetic coil, the second bow spring drives the second hooking piece to move downwards and is clamped on the key core of the main lock, the key core of the main lock is clamped and positioned, and the electric interlocking mechanism is locked.
Further, when an emergency occurs, an emergency stop button is pressed, an emergency stop auxiliary contact I is connected with a control host of an automatic production line to send an emergency braking and stopping signal, and meanwhile, an emergency stop auxiliary contact II is used for sending a power-off signal to an electromagnetic coil of the electric interlocking mechanism to unlock the electric interlocking mechanism.
The advantages and effects:
1. based on the response logic control of master-slave interaction, a shutdown instruction can be sent to a control host of an automatic production line through the unlocking operation of an auxiliary lock of a safety lock installed on site at a protective door far away from an operation table of the automatic production line, and after the control host of the automatic production line sends out equipment shutdown ready feedback, an electrical interlocking mechanism inside the safety lock is released, and then the safety lock enters the production line through the unlocking operation of a main lock mechanism of the safety lock. Because the normal parking instruction needs to send out a signal at the operation desk, the operator needs to return to the operation desk to send out the parking instruction after finding out the fault, and the response time of fault processing is increased. The invention can realize that the staff sends out the parking instruction on site, and effectively reduces the response time of fault processing. Thereby reducing the impact damage to the mechanical equipment caused by unnecessary "scram" operation.
2. Because the automation degree of the current production line is higher, when equipment in automatic logic operation suddenly suffers from 'scram' signal interference, the 'out-of-step' or 'out-of-step' operation of mechanical equipment can be caused, the equipment running to half logic needs to be manually returned to a 'zero position' operation, meanwhile, raw materials blocked in a 'half way' also need to be manually cleared, and then the equipment can be restarted. Through the response logic control of master-slave interaction, a stop instruction can be sent to a control host of an automatic production line on a safety lock, so that equipment in automatic logic operation stands by in a zero position after the current logic is completed, the phenomenon of 'step out' or 'step disorder' of mechanical equipment in the operation process is effectively avoided, and unnecessary equipment 'idle' time and raw material consumption are reduced.
3. When an emergency working condition occurs on the site and an operator needs to immediately enter the processing, the emergency stop button on the safety lock can immediately stop the operation state of the mechanical equipment of the host machine, and simultaneously, the electric interlocking of the main lock mechanism is released. After an operator presses the emergency stop button, the safety lock can be immediately unlocked to enter the production line for troubleshooting.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the emergency stop apparatus of the present invention;
FIG. 4 is a schematic view of the primary lock locking mechanism of the present invention;
FIG. 5 is a schematic diagram of the primary lock action structure of the present invention;
FIG. 6 is a schematic diagram of the secondary lock action structure of the present invention;
FIG. 7 is a side view of the safety lock;
FIG. 8 is a schematic diagram of three indication states of the present invention;
FIG. 9 is an electrical interlock schematic of the present invention;
FIG. 10 is a schematic of the scram feedback of the present invention;
FIG. 11 is a schematic diagram of the stop output of the present invention;
fig. 12 is an electrical control schematic of the present invention.
The icon illustrates:
1. a safety lock locking state indicator lamp; 2. the host is in a standby state indicator lamp; 3. an unlocking state indicator lamp of the safety lock; 4. an emergency stop button; 41. an emergency stop auxiliary contact I; 42. scram auxiliary contact II; 43. a threaded base; 5. a master lock locking mechanism; 51. a first hook member; 52. a keyhole; 53. a third slip kit; 54. a third bow spring bolt; 55. a protruding end; 56. a third sleeve member bolt; 57. a third bow spring; 58. a return mechanism; 6. an electrical interlock mechanism; 61. a second bow spring bolt; 62. a second bow spring; 63. a second hook member; 64. the second sliding sleeve piece bolt; 65. a second slip sleeve; 66. an electromagnetic coil; 67. bolts for fixing the electromagnetic coils; 7. a primary lock assist mechanism; 71. a primary lock auxiliary contact; 72. auxiliary contact bolts of the main lock; 73. auxiliary contact boss of main lock; 8. a master lock mechanism; 81. a primary lock camshaft; 82. a key shaft of the main lock; 83. a master lock key core; 84. a circular groove; 9. a mechanical interlock mechanism; 91. a latch; 92. the first sliding sleeve bolt; 93. a first slip sleeve; 94. a jacking mechanism; 95. a first bow spring; 96. a first bow spring bolt; 10. auxiliary lock mechanism; 101. bolts for fixing auxiliary contacts of the auxiliary lock; 102. auxiliary contacts of the auxiliary lock; 103. auxiliary lock auxiliary contact boss; 11. an auxiliary lock mechanism; 111. a secondary lock cam shaft; 112. a secondary lock key shaft; 113. a secondary lock key core; 12. an interactive wiring terminal; 13. and interlocking the wiring terminals.
Detailed Description
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
Due to the improvement of the automation degree of the current society and the rapid development of production integration, the requirements on the continuity of industrial production and the interactivity of personnel are greatly improved, and accordingly, the personnel safety, the equipment safety and the unnecessary idle working time caused by the intervention of external personnel on an automatic production line are bottlenecks for restricting the safe production and the efficient production. The invention aims to reduce casualties, equipment damage and unnecessary idle working time consumption caused by the casualties and the equipment damage caused by personnel intervention in an automatic production line.
Combining three common working conditions existing at present:
1. aiming at the frequently-occurring production material blocking, an operator enters a production line to adjust materials;
2. aiming at the problem that when the equipment runs, operators enter a production line to cause emergency stop to impact the equipment greatly;
3. for the false start signal from outside when the operator or maintainer enters the production line to work
The safety lock of the invention provides three safe and convenient preventive measures:
1. aiming at the situation that personnel enter in an emergency, important damage of personnel or equipment is guaranteed, an emergency stop button is provided, and operation of equipment in an automatic production line can be forcibly interrupted at any time;
2. Aiming at the entry of personnel under the non-emergency condition, in order to avoid the load impact on equipment caused by emergency parking and the automatic track deviation of the equipment caused by forced braking, the safety lock provides a master-slave interactive response type logic control mode, namely: unlocking the auxiliary lock to send a parking instruction to the automatic production line, and after the automatic production line finishes the parking instruction and feeds back a ready signal, unlocking the main lock, and at the moment, manually unlocking the main lock, simultaneously sending an emergency parking instruction to the automatic production line and opening the safety lock to enter the production line for operation;
3. for the false start signal from outside, after the main lock of the safety lock is unlocked, the main lock key can be pulled out for operators and maintenance personnel to carry about, and the main lock and the auxiliary lock are locked by returning to the non-self, so that the sudden stop signal of the automatic production line cannot be released.
As shown in fig. 1 and 2, a master-slave interaction-based response logic control safety lock comprises a master lock auxiliary mechanism 7 and a slave lock auxiliary mechanism 10, wherein the master lock mechanism 8, the slave lock mechanism 11, the master lock auxiliary mechanism 7 and the slave lock auxiliary mechanism 10 are fixed in a shell, an interaction wiring terminal 12 and an interlocking wiring terminal 13 are arranged at the lower end of the shell, the slave lock mechanism 11 is arranged below the master lock mechanism 8, a mechanical interlocking mechanism 9 is arranged between the slave lock mechanism 11 and the master lock mechanism 8, and the slave lock mechanism 11 and the master lock mechanism 8 form pin type positioning through the mechanical interlocking mechanism 9; one side of the main lock mechanism 8 is provided with an electric interlocking mechanism 6, and the electric interlocking mechanism 6 is clamped with a main lock key shaft 82 when being electrified; the other side of the main lock mechanism 8 is provided with a main lock auxiliary mechanism 7, and a main lock auxiliary contact boss 73 of the main lock auxiliary mechanism 7 is driven to stretch and retract by the rotation of a main lock cam shaft 81 of the main lock mechanism 8; an auxiliary lock mechanism 10 is arranged on one side of the auxiliary lock mechanism 11, and an auxiliary lock auxiliary contact boss 103 of the auxiliary lock mechanism 10 is driven to stretch and retract by an auxiliary lock cam shaft 111 of the auxiliary lock mechanism 11; a main lock locking mechanism 5 is arranged above the main lock mechanism 8, and the main lock locking mechanism 5 rotates to drive the main lock locking mechanism 5 to move up and down, so that the main lock locking mechanism 5 and a bolt can be inserted and pulled out.
The safety lock further comprises a main lock key and an auxiliary lock key, the main lock key is matched with the main lock key core 83, the auxiliary lock key is matched with the auxiliary lock key core 113, when the safety lock is used, the auxiliary lock key is directly perpendicular to the surface of the cubic shell of the safety lock and is inserted into the main lock key core 83, unlocking is achieved through anticlockwise rotation, and then the main lock mechanism 8 is unlocked through clockwise rotation of the main lock key inserted into the main lock key core 83. The casing of the cube is divided into a base and an upper cover, and the four bases and the upper cover with fixed side surfaces and bottom surfaces can be fixed by bolts.
The auxiliary lock cam shaft of the auxiliary lock mechanism drives the mechanical interlocking mechanism to rotate, and one side of the main lock mechanism is provided with an electric interlocking mechanism which is clamped with the main lock mechanism; the other side of the main lock mechanism is provided with a main lock auxiliary mechanism, and the main lock mechanism rotates to drive the main lock auxiliary mechanism to stretch out and draw back, so that the main lock auxiliary mechanism is triggered; one side of the auxiliary lock mechanism is provided with the auxiliary lock auxiliary mechanism, and the auxiliary lock mechanism rotates to drive the auxiliary lock auxiliary mechanism to stretch out and draw back, so that the auxiliary lock auxiliary mechanism is triggered.
The main lock auxiliary mechanism 7 and the auxiliary lock auxiliary mechanism 10 are of the same structure, are all conventional auxiliary mechanisms with contacts, are of the type ZB2-BE102C, and are manufactured by Schneider electric company. A brief description of the auxiliary mechanism is provided here, with the actual auxiliary mechanism being of conventional design. The inter-connection terminals 12 and the interlock connection terminals 13 are existing connection terminals.
The main lock auxiliary mechanism 7 includes a main lock auxiliary contact 71, a main lock auxiliary contact boss 73 for snapping the main lock auxiliary contact 71, and an auxiliary contact internally mounted self-resetting mechanism (not shown in the drawings), the main lock auxiliary mechanism 7 is fixed inside the housing and disposed on one side of the main lock mechanism 8, the main lock auxiliary contact 71 is disposed on the right side of the main lock auxiliary contact boss 73, the main lock auxiliary contact boss 73 is in contact with the main lock cam shaft 81, such that the main lock auxiliary contact boss 73 rotates to drive the main lock auxiliary contact 71 to move left and right, the auxiliary contact internally mounted self-resetting mechanism is connected with the main lock auxiliary contact boss 73, the auxiliary contact internally mounted self-resetting mechanism may be a spring or the like structure for resetting the main lock auxiliary contact boss 73, and is kept in constant contact with the main lock cam shaft 81.
The auxiliary lock mechanism 10 includes an auxiliary lock contact 102, an auxiliary lock contact boss 103 for pressing the auxiliary lock contact 102, and an auxiliary contact internally mounted self-resetting mechanism (not shown in the figure), the auxiliary lock mechanism 10 is fixed inside the housing and is arranged on one side of the auxiliary lock mechanism 11, the auxiliary lock contact 102 is arranged on the right side of the auxiliary lock contact boss 103, the auxiliary lock contact boss 103 is in contact with the auxiliary lock cam shaft 111, the auxiliary lock contact boss 103 rotates to drive the auxiliary lock contact 102 to move in a telescopic manner, the auxiliary contact internally mounted self-resetting mechanism is connected with the auxiliary lock contact boss 103, and the auxiliary contact internally mounted self-resetting mechanism can be of a spring or the like structure for resetting the auxiliary lock contact boss 103 and keeping in constant contact with the auxiliary lock cam shaft 111.
The control host of the automatic production line is the existing preparation equipment of the automatic production line. The control host of the automatic production line is connected with the equipment in the safety lock through a wire, and the description is omitted here.
As shown in fig. 1 and 2, the safety lock further comprises a housing, a scram button 4 connected with a control host of the automated production line, and an indicator lamp, wherein the scram button 4 is arranged on the housing, and the indicator lamp fixed on the housing is arranged above the scram button 4.
The emergency stop button 4 is a common emergency stop button in the existing automatic production line, is arranged below the indicator lamp, is used for drilling a round hole of M22 in the upper cover of the safety lock, is further inserted into a bolt column of M21.5 on the threaded base 43 of the auxiliary contact, and is screwed on the threaded base 43 to be fixed. The screw base 43 of the emergency stop button 4 is driven by the mushroom head button, the lower part of the screw base is fixed on the emergency stop base through a bolt, an emergency stop auxiliary contact I41 sends an emergency stop signal to all equipment in the automatic production line, and meanwhile, the electric interlocking mechanism 6 in the safety lock is released through an emergency stop auxiliary contact II 42. At this time, the operator only needs to mechanically unlock the main lock mechanism 8 and the auxiliary lock mechanism 11 to unlock the safety lock, and the operator enters the production line.
As shown in fig. 6 and 7, the secondary lock mechanism 11 includes a secondary lock cam shaft 111 and a secondary lock key core 113, a triangular secondary lock key shaft 112 is provided on the secondary lock key core 113 provided in the housing, a circular groove 84 is provided right under the secondary lock key core 113, and the secondary lock cam shaft 111 moves circumferentially on the secondary lock key core 113 through the circular groove 84; the auxiliary body of the auxiliary lock cam shaft 111 is sleeved on the circular groove 84, and a shaft cap is fixed on the auxiliary body; the shaft cap is in contact with the bottom end of the latch 91 of the mechanical interlock 9.
The circular grooves 84 are provided at both front and rear ends of the main lock key core 83 and the sub-lock key core 113, mainly for restraining the main lock cam shaft 81 and the sub-lock cam shaft 111 from moving circumferentially, and not moving in a vertical or horizontal direction, so as to prevent deviation from the main lock key core 83 and the sub-lock key core 113.
The mechanical interlocking mechanism 9 and the electric interlocking mechanism 6 which are interlocked with the main lock are arranged in the shell, and the mechanical interlocking mechanism 9 is that: the secondary lock key core 113 is located at the center of the lower end of the scram button 4 near the safety lock upper cover as shown in fig. 1 and 2, and a circular groove 84 having an inner diameter M50 is cast under the secondary lock key core 113, and the circular groove 84 is used for fixing and allowing the secondary lock cam shaft 111 embedded therein to move in the circumferential direction. The secondary lock cam shaft 111 may be divided into two parts in the safety lock depth direction: the shaft auxiliary body and the shaft cap. The auxiliary lock key core 113 with the triangular section of the auxiliary lock key shaft 112 is inserted into the auxiliary shaft body with the triangular longitudinal deep hole and is tightly pressed, then the shaft cap is buckled above the auxiliary lock key core 113, then the lower end of the auxiliary shaft body is inserted into the circular groove 84 of the safety lock base, the upper end of the shaft cap is aligned with the circular groove 84 of the upper cover of the safety lock, and at the moment, the upper cover of the safety lock is closed, so that the installation and fixation of the auxiliary lock part are completed.
In use, the auxiliary lock key is inserted into the auxiliary lock key core 113, and the auxiliary lock key is rotated to drive the auxiliary lock key core 113 with a triangular section inserted into the auxiliary lock cam shaft 111 to drive the auxiliary lock cam shaft 111 with the bottom embedded in the groove on the bottom surface of the safety lock to rotate clockwise, so as to drive the locking piece 91 for transmitting the lifting force of the auxiliary lock cam shaft 111 and having the anti-locking convex end 55 to move upwards. The latch 91 is in a cross shape, two first bow springs 96 horizontally arranged at the left side and the right side of the latch 91 are arranged at the position about 50mm above the convex end 55 at the lower end of the latch 91, the first bow springs 95 are used for installing two reset latches 91, and the lower ends of the first bow springs 95 are fixed on a safety lock base by bolts. The first sliding sleeve member 93 for guiding the displacement of the main lock locking mechanism 5 is arranged on the base of the position about 20mm above the first bow spring bolt 95, the first sliding sleeve member 93 is fixed on the base of the safety lock through the first sliding sleeve bolts 92, and after the four first sliding sleeve bolts 92 are loosened, the first sliding sleeve member 93 can be divided into two parts: a base and an upper cover. The base and the upper cover center symmetry position of the first sliding sleeve member 93 are respectively provided with rectangular holes, after the upper cover of the first sliding sleeve member 93 is opened, the cross-shaped clamping locking piece 91 can be put in the rectangular holes, the upper cover of the first sliding sleeve member 93 is closed, the four first sliding sleeve bolts 92 used for fixing the first sliding sleeve member 93 are screwed up, and finally, the first bow springs 95 used for resetting the lower ends of the two clamping pieces 91 and fixed on the safety lock base are hung on the first bow spring bolts 96 on the two sides of the clamping piece 91, so that the installation of the auxiliary lock mechanical mechanism is completed. When the auxiliary lock key is used, the auxiliary lock key is inserted into the key hole 112 in the center of the shaft 113 with the triangular section in the auxiliary lock cam shaft 111, the auxiliary lock cam shaft 111 with the bottom embedded in the groove in the bottom surface of the safety lock is driven to rotate clockwise by rotating the key to drive the auxiliary lock key core 113 to drive the self-reset jacking mechanism 94 to move upwards, so that the upper end of the jacking mechanism 91 carries out pin type positioning on the main lock key core 83 of the main lock section in a locking state, and further the mechanical interlocking of the main lock mechanism 8 and the auxiliary lock mechanism 11 is completed.
As shown in fig. 5, the main lock mechanism 8 includes a main lock cam shaft 81 and a main lock key core 83, a triangular main lock key shaft 82 is provided on the main lock key core 83 fixed in the housing, a circular groove 84 is provided right under the main lock key core 83, and the main lock cam shaft 81 moves circumferentially on the main lock key core 83 through the circular groove 84; the contact of the primary lock cam shaft 81 with the primary lock locking mechanism 5, the primary lock cam shaft 81 conducts the lifting force of the primary lock cam shaft 81 through the protruding end 55 of the primary lock locking mechanism 5.
The main lock key cylinder 83 is located at the center of the lower end of the emergency stop button 4 near the upper cover of the safety lock. The safety lock upper cover and base are provided with circular grooves 84 having an inner diameter M50 at both ends of the main lock key core 83, and the circular grooves 84 are used to fix and allow circumferential movement of the main lock cam shaft 81 embedded therein. The main lock cam shaft 81 may be divided into two parts in the safety lock depth direction: the shaft body and the shaft cap are shown in fig. 7. The main lock mechanism 8 is provided with a main lock key core 83, the section of which is triangular, the main lock key core 83 is inserted into a shaft main body with a triangular longitudinal deep hole and is pressed, then a shaft cap is buckled above the main lock key core 83, the lower end of the shaft main body is inserted into a circular groove 84 of a safety lock base, the upper end of the shaft cap is aligned with the circular groove 84 of a safety lock upper cover, and at the moment, the safety lock upper cover is closed, so that the installation and fixation of the main lock part are completed.
When the safety lock is used, a main lock key is inserted into the main lock key core 83, the main lock key core 83 is driven to be inserted into the main lock cam shaft 81 by turning the key, the main lock cam shaft 81 with the bottom embedded in the groove on the bottom surface of the safety lock is driven to rotate clockwise, and the protruding end 55 for transmitting the jacking force of the main lock cam shaft 81 and preventing the locking is driven to move upwards. The protruding part is integrated with the first hook 51 for hooking the latch, the main body is in an L shape, two horizontal third bow spring bolts 54 are installed at the position of about 50mm near the protruding end 55, two third bow springs 57 for resetting the first hook 51 are installed, and the lower end of the third bow spring 57 is fixed on the safety lock base by the third bow spring bolts 54. A third sliding sleeve piece 53 for guiding the displacement of the locking mechanism is arranged on the base of the position about 20mm above the third bow spring bolt 54, the third sliding sleeve piece 53 is fixed on the base of the safety lock through a third sliding sleeve piece bolt 56, and after the four third sliding sleeve piece bolts 56 are loosened, the third sliding sleeve piece 53 can be divided into two parts: a base and an upper cover. Rectangular holes are respectively formed in the central symmetry positions of the base and the upper cover of the third sliding sleeve piece 53, after the upper cover of the third sliding sleeve piece 53 is opened, the part with the convex end 55 of the L-shaped first hook hanging piece 51 can be placed in the rectangular holes, the upper cover of the third sliding sleeve piece 53 is closed, four bolts 56 for fixing the sliding sleeve piece 53 are screwed down, and finally two third bow springs 57 for resetting the lower end of the main hook hanging piece 51 and fixing the lower end of the main hook hanging piece to the safety lock base are hung on the third bow spring bolts 54 on the two sides of the first hook hanging piece 51, so that the installation of the main lock mechanism 8 is completed. The first hook hanging piece 51 is jacked upwards along with the rotation of the main lock cam shaft 81, so that the first hook hanging piece 51 linked with the first hook hanging piece is separated from a groove at the front end of a bolt for locking a lock safety door, and at the moment, the bolt for locking the lock safety door can be pulled out from the keyhole 52, and further unlocking of the safety lock is achieved. The bolt is an existing bolt, does not belong to the protection scope of the safety lock, is not shown in the figure, and is an existing bolt with a groove.
As shown in fig. 10, the external main unit supplies a dc 24V power to the emergency stop auxiliary contact i 41 of the auxiliary contact of the emergency stop button 4, is connected to the main lock auxiliary contact 71 through a wire, and is connected to an input point of the control main unit of the external automation line through a wire. At this time, the main lock auxiliary contact boss 73 of the main lock auxiliary contact 71 is extruded and retracted by the main lock cam shaft 81, the main lock auxiliary contact 71 is mounted on the right side of the main lock cam shaft 81 and is fixed on the safety lock base at a position about 35mm away from the center of the main lock cam shaft 81, the main lock auxiliary contact boss 73 of the main lock auxiliary contact 71 drives the NC contacts to separate so as to send an inhibit starting signal after unlocking to an automatic production line and a safety lock body, and a main lock key of the main lock mechanism 8 can be pulled out under a main lock unlocking state to be carried by operators entering the automatic production line, so that other operators can be prevented from locking the safety lock at the moment. After the internal work is finished, the operator can insert the bolt into the keyhole 52 after closing the protective door, and then insert the main lock key into the main lock mechanism 8 and rotate counterclockwise to complete the locking of the main lock.
As shown in fig. 2 and 6, the mechanical interlocking mechanism 9 includes a latch 91, a first sliding sleeve member 93, and a lifting mechanism 94, the first sliding sleeve member 93 is fixed between the main locking mechanism 8 and the auxiliary locking mechanism 11, the latch 91 is sleeved in the first sliding sleeve member 93, the lifting mechanism 94 is located under the first sliding sleeve member 93, the middle of the lifting mechanism 94 is connected with the latch 91 and the latch slot, the lifting mechanism 94 moves up and down along with the latch 91, two ends of the lifting mechanism 94 are respectively provided with a first bow spring 95, one end of the first bow spring 95 is fixed by a bolt of the first bow spring 95, and the other end is connected with the lifting mechanism 94.
The external host provides a direct current 24V power supply to the emergency stop auxiliary contact I41 of the emergency stop button 4, and is connected to the electromagnetic coil 66 through a wire, and is connected to an input point of a control host of an automatic production line of the external host through a wire. As shown in fig. 8, the electrical interlock portion is configured to transmit an interlock signal INPUT1 through the external interface portion 13 to drive the electromagnetic coil 66 to electrically attract the second hook 63 with the self-resetting hook and slot mechanism downward when the equipment in the automated production line is in operation, so as to clamp the master lock key cylinder 83 as the master lock section.
The second hook hanging piece 63 is an armature piece with an L-shaped main body and a rectangular cross section, one side of the L-shaped second hook hanging piece 63 is provided with a triangular groove, and the shape of the groove is consistent with that of a main lock key core 83 of the main lock mechanism 8; a second bow spring bolt 61 is provided at the other side of the second hook hanger 63 at a distance of 50mm from the end surface, the second bow spring bolt 61 is used for fixing the upper end of the second bow spring 62, and the lower end of the second bow spring 62 is fixed on the second hook hanger 63 by bolts, so that the second hook hanger 63 moves in the up-down direction. The second sliding sleeve member 65 for guiding the displacement of the interlocking mechanism of the electrical appliance is arranged on the base of the position about 20mm above the first bow spring bolt 96, the second sliding sleeve member 65 is fixed on the base of the safety lock through the second sliding sleeve member bolts 64, and after the four second sliding sleeve member bolts 64 are loosened, the second sliding sleeve member 65 can be divided into two parts: a base and an upper cover. The base and the upper cover of the second sliding sleeve member 65 are respectively provided with rectangular holes in central symmetry positions, after the upper cover of the sliding sleeve member is opened, the L-shaped hook hanging member 63 can be placed in the rectangular holes, the upper cover of the second sliding sleeve member 65 is closed, four second sliding sleeve member bolts 64 for fixing the second sliding sleeve member 65 are screwed down, finally, the second bow spring 62 for resetting the second hook hanging member 63 of the main lock mechanism 8 and fixing the second hook hanging member 63 on the safety lock base is hung on the second hook hanging member 63, and the lower end of one side of the second hook hanging member 63 without a triangular groove is inserted into the central hole of the electromagnetic coil 66 fixed on the safety lock base through the four bolts 67 for fixing the electromagnetic coil, so that the installation of the electric interlocking mechanism 6 is completed.
When the main lock key core 83 is engaged by the second hook piece 63, the main lock mechanism 8 is unable to be unlocked by the main lock key. The release of the mechanical interlock may be accomplished by inserting the secondary lock key into the secondary lock mechanism 11 and rotating it counterclockwise, driving the secondary lock key core 113 to rotate counterclockwise, and further driving the first bow spring 95 of the self-resetting jack mechanism 94 to reset the jack mechanism 94.
The external host provides a direct current 24V power supply to the auxiliary lock auxiliary contact 102 of the auxiliary lock auxiliary contact mechanism, and is connected to an input point of a control host of the external host automation production line through a wire. The release of the electrical interlock can be achieved by the auxiliary lock cam shaft 111 mechanically unlocking the auxiliary lock contact boss 103 of the auxiliary lock contact mechanism 10 to be extruded and retracted by the auxiliary lock cam shaft 111, the auxiliary lock contact 102 is mounted on the right side of the auxiliary lock cam shaft 111 and is located at a position which is about 35mm away from the center of the auxiliary lock cam shaft 111, the auxiliary lock contact 102 is fixed on the safety lock base through four bolts 101 which are used for fixing the auxiliary lock contact 102, the auxiliary lock contact boss 103 of the auxiliary lock contact mechanism 10 drives the NC contact to separate, and then an unlocked parking standby signal INPUT3 is sent to the automatic production line and the safety lock body, as shown in FIG. 11. At this time, for the equipment that is performing the specific cyclic action, the equipment is stopped at the "zero position" and stands by after the action is performed, after the equipment in the automatic production line is ready, a system ready signal can be fed back to the safety lock through the interlocking connection terminal 13 that is interlocked with the external equipment, after the safety lock receives the signal, the power supply of the electromagnetic coil 66 is cut off to cause the second bow spring 62 to reset the second hook member 63, and the key core 83 of the main lock is disconnected and clamped and positioned, so as to complete the release of the electrical interlocking.
As shown in fig. 2 and 6, the electric interlocking mechanism 6 includes a second bow spring 62, a second hook hanging member 63, a second sliding sleeve member 65, and an electromagnetic coil 66, one end of the second hook hanging member 63 is clamped on a main lock key shaft 82 of the main lock mechanism 8, the other end is electrically absorbed by the electromagnetic coil 66, the second hook hanging member 63 is provided with the second sliding sleeve member 65 near the electromagnetic coil 66 end, one end of the second bow spring 62 is fixed above the second hook hanging member 63 through the second bow spring bolt 61, and the other end of the second bow spring 62 is connected with the second hook hanging member 63.
The main lock locking mechanism 5 comprises a first hook hanging piece 51, a lock hole 52, a third sliding sleeve piece 53 and a return mechanism 58, wherein the lock hole 52 is arranged on the outer side of the shell, the lower end of the first hook hanging piece 51 is connected with the return mechanism 58 by penetrating through the third sliding sleeve piece 53 which is used for guiding the main lock locking mechanism 5 to move, the return mechanism 58 is sleeved on the first hook hanging piece 51, one end of a third bow spring 57 is fixed through a third bow spring bolt 54, the other end of the third bow spring 57 is connected with the return mechanism 58, the return mechanism 58 is a plate with a through hole, and the diameter of the through hole is matched with the diameter of the lower end of the first hook hanging piece 51 and is fixed, so that the first hook hanging piece 51 and the return mechanism 58 move simultaneously; the protruding end 55 of the first hook member 51 contacts with the main lock cam shaft 81 of the main lock mechanism 8, so that the cam shaft drives the protruding end 55 of the first hook member 51 to move up and down when rotating, and further drives the first hook member 51 to move up and down, and the locking and unlocking of the door latch are realized.
The indicating lamps comprise a safety lock locking state indicating lamp 1, a main machine standby state indicating lamp 2 and a safety lock unlocking state indicating lamp 3; the normally closed contacts (7_11-7_12 in fig. 8) of the main lock auxiliary mechanism 7 are connected with the safety lock locking state indicating lamp 1, the main machine is in standby state indicating lamp 2 is connected with the control main machine of the automatic production line, and the safety lock unlocking state indicating lamp 3 is connected with the normally open contacts (7_21-7_22 in fig. 8) of the main lock auxiliary mechanism 7. Wherein, the safety lock locking state indicator lamp 1 is red, the machine is in standby state indicator lamp 2 is yellow, and the safety lock unlocking state indicator lamp 3 is green.
The three status indicator lamps are a safety lock locking status indicator lamp 1, a machine on standby status indicator lamp 2 and a safety lock unlocking status indicator lamp 3 respectively. The external host provides direct current 24V power to be connected to the main lock auxiliary contact 71 of the main lock auxiliary mechanism 7 through a wire, then to the safety lock locking state indicator lamp 1 through a wire, and then to the 0V wiring of the external host through a wire. When the main lock auxiliary contact 71 is closed, a red indicator lamp is lighted, the red indicator lamp is positioned at the position of the upper part of the safety lock, which is close to the left side and is shown in fig. 1, and is embedded into the upper cover of the safety lock, and is connected with a control host of an automatic production line through a 0.3mm wire according to the schematic diagram of fig. 8; the external host provides a direct current 24V power supply to a passive normally closed contact provided by the external host, is connected to the host in standby state indicator lamp 2 through a wire, and is connected to a 0V wiring position of the external host through the wire. When the contacts representing the host computer in place are closed, the yellow indicator lamp is lighted, the right side of the red indicator lamp positioned at the upper part of the safety lock is embedded into the upper cover of the safety lock, and the yellow indicator lamp is connected with the control host computer of the automatic production line through a 0.3mm wire according to a schematic diagram; the external host provides a direct current 24V power supply to the normally closed contact of the auxiliary lock contact 102, is connected to the unlocking state indicator lamp 3 of the safety lock through a wire, and is connected to the 0V wiring position of the external host through the wire. When the auxiliary contact 71 of the main lock is closed, a green indicator lamp is lighted, the right side of the yellow indicator lamp positioned at the upper part of the safety lock is embedded into the upper cover of the safety lock for installation, and the upper cover is connected with a control host of an automatic production line through a 0.3mm wire.
As shown in fig. 1, 2 and 12, a method for operating a master-slave interaction based responsive logic control security lock, the method comprising the steps of:
step one: in the locked state, the auxiliary lock key is inserted into the auxiliary lock key shaft 112 of the auxiliary lock mechanism 11, the auxiliary lock key drives the auxiliary lock cam to rotate anticlockwise, the jacking mechanism 94 contacted with the auxiliary lock cam moves downwards, the locking piece 91 is separated from the main lock key core 83, and the mechanical interlocking mechanism 9 is unlocked;
the rotation of the auxiliary lock cam enables the auxiliary lock contact 102 to send a stopping signal to a control host of an automatic production line, the control host of the automatic production line feeds back a signal to the interlocking wiring terminal 13, the electric interlocking mechanism 6 connected with the interlocking wiring terminal 13 through a wire cuts off the power supply of the electromagnetic coil 66, the second bow spring 62 drives the second hook hanging piece 63 to reset upwards, the clamping and the positioning of the main lock key core 83 are disconnected, and the electric interlocking mechanism 6 is unlocked;
step two: the main lock key is inserted into a main lock key shaft 82 of the main lock mechanism 8, the main lock key drives the main lock cam to rotate clockwise, a convex end 55 contacted with the main lock cam moves upwards in contact, the convex end 55 drives a first hook hanging piece 51 to be separated from a bolt groove in a keyhole 52, and a bolt is pulled out from the keyhole 52 to realize safe unlocking;
Step three: when the main lock is needed to be locked again after use, the main lock key is rotated anticlockwise, and the first hook hanging piece 51 is inserted into the bolt groove, so that the main lock mechanism 8 is locked; the auxiliary lock key rotates clockwise to drive the auxiliary lock cam to rotate clockwise, the jacking mechanism 94 contacted with the auxiliary lock cam moves upwards, the locking piece 91 contacts with the main lock key core 83, and the mechanical interlocking mechanism 9 is locked;
the rotation of the auxiliary lock cam enables the auxiliary lock contact 102 to send an interlocking signal to a control host of an automatic production line, the control host of the automatic production line feeds back a signal to the interlocking connection terminal 13, the electric interlocking mechanism 6 connected with the interlocking connection terminal 13 through a wire is communicated with a power supply of the electromagnetic coil 66, the second bow spring 62 drives the second hook hanging piece 63 to move downwards and clamped on the main lock key core 83, the main lock key core 83 is clamped and positioned, and the electric interlocking mechanism 6 is locked.
When an emergency accident occurs, an emergency stop button is pressed, an emergency stop auxiliary contact I41 is connected with a control host of an automatic production line to send an emergency braking and stopping signal, and meanwhile, an emergency stop auxiliary contact II 42 is used for sending a power-off signal to an electromagnetic coil 66 of the electric interlocking mechanism 6 to unlock the electric interlocking mechanism 6.
Claims (5)
1. The utility model provides a safety lock, includes main lock auxiliary mechanism (7) and vice lock auxiliary mechanism (10), and main lock mechanism (8), vice lock mechanism (11), main lock auxiliary mechanism (7) and vice lock auxiliary mechanism (10) are fixed in the shell, and the shell lower extreme is equipped with interactive binding post (12) and interlocking binding post (13), its characterized in that: the auxiliary lock mechanism (11) is arranged below the main lock mechanism (8), the mechanical interlocking mechanism (9) is arranged between the auxiliary lock mechanism (11) and the main lock mechanism (8), and the auxiliary lock mechanism (11) and the main lock mechanism (8) form pin type positioning through the mechanical interlocking mechanism (9);
one side of the main lock mechanism (8) is provided with an electric interlocking mechanism (6), and the electric interlocking mechanism (6) is clamped with a main lock key shaft (82) when being electrified;
the other side of the main lock mechanism (8) is provided with a main lock auxiliary mechanism (7), and a main lock auxiliary contact boss (73) of the main lock auxiliary mechanism (7) is driven to stretch by the rotation of a main lock cam shaft (81) of the main lock mechanism (8);
an auxiliary lock mechanism (10) is arranged on one side of the auxiliary lock mechanism (11), and an auxiliary lock auxiliary contact boss (103) of the auxiliary lock mechanism (10) is driven to stretch by an auxiliary lock cam shaft (111) of the auxiliary lock mechanism (11);
A main lock locking mechanism (5) is arranged above the main lock mechanism (8), and the main lock locking mechanism (5) rotates to drive the main lock locking mechanism (5) to move up and down, so that the main lock locking mechanism (5) and a bolt can be inserted and pulled out;
the auxiliary lock mechanism (11) comprises an auxiliary lock cam shaft (111) and an auxiliary lock key core (113), wherein a triangular auxiliary lock key shaft (112) is arranged on the auxiliary lock key core (113) arranged in the shell, circular grooves (84) are formed in two ends of the auxiliary lock key core (113), and the auxiliary lock cam shaft (111) moves circumferentially on the auxiliary lock key core (113) through the circular grooves (84);
the auxiliary shaft body of the auxiliary lock cam shaft (111) is sleeved on the circular groove (84), and a shaft cap is fixed on the auxiliary shaft body; the shaft cap is contacted with the bottom end of a locking piece (91) of the mechanical interlocking mechanism (9);
the main lock mechanism (8) comprises a main lock cam shaft (81) and a main lock key core (83), a triangular main lock key shaft (82) is arranged on the main lock key core (83) fixed in the shell, circular grooves (84) are formed in two ends of the main lock key core (83), and the main lock cam shaft (81) moves on the main lock key core (83) along the circumferential direction through the circular grooves (84);
The main lock cam shaft (81) is in contact with the main lock locking mechanism (5), and the main lock cam shaft (81) conducts the jacking force of the main lock cam shaft (81) through the protruding end (55) of the main lock locking mechanism (5);
the mechanical interlocking mechanism (9) comprises a clamping locking piece (91), a first sliding sleeve piece (93) and a jacking mechanism (94), wherein the first sliding sleeve piece (93) is fixed between the main locking mechanism (8) and the auxiliary locking mechanism (11), the clamping locking piece (91) is sleeved in the first sliding sleeve piece (93), the jacking mechanism (94) is positioned under the first sliding sleeve piece (93), the clamping locking piece (91) is connected with the middle of the jacking mechanism (94), the jacking mechanism (94) moves up and down along with the clamping locking piece (91), first bow springs (95) are respectively arranged at two ends of the jacking mechanism (94), one end of each first bow spring (95) is fixed through a first bow spring bolt (96), and the other end of each first bow spring (95) is connected with the jacking mechanism (94);
the electric interlocking mechanism (6) comprises a second bow spring (62), a second hook hanging piece (63), a second sliding sleeve piece (65) and an electromagnetic coil (66), one end of the second hook hanging piece (63) is clamped on a main lock key shaft (82) of the main lock mechanism (8), the other end of the second hook hanging piece is electrically adsorbed with the electromagnetic coil (66), the second hook hanging piece (63) is close to the electromagnetic coil (66), the second sliding sleeve piece (65) is arranged at the end, close to the electromagnetic coil (66), of the second hook hanging piece (63), one end of the second bow spring (62) is fixed above the second hook hanging piece (63) through a second bow spring bolt (61), and the other end of the second bow spring (62) is connected with the second hook hanging piece (63);
The main lock locking mechanism (5) comprises a first hook hanging piece (51), a lock hole (52), a third sliding sleeve piece (53) and a return mechanism (58), wherein the lock hole (52) is arranged on the outer side of the shell, the lower end of the first hook hanging piece (51) penetrates through the third sliding sleeve piece (53) which is used for guiding the main lock locking mechanism (5) to displace and is connected with the return mechanism (58), the return mechanism (58) is sleeved on the first hook hanging piece (51), one end of the third bow spring (57) is fixed through a third bow spring bolt (54), and the other end of the third bow spring (57) is connected with the return mechanism (58);
the protruding end (55) of the first hook hanging piece (51) is in contact with a main lock cam shaft (81) of the main lock mechanism (8), so that the cam shaft drives the protruding end (55) of the first hook hanging piece (51) to move up and down when rotating, and further drives the first hook hanging piece (51) to move up and down, and locking and unlocking of the door bolt are achieved.
2. The safety lock of claim 1, wherein: the safety lock further comprises a shell, a scram button (4) connected with a control host of the automatic production line and an indicator lamp, wherein the scram button (4) is arranged on the shell, and the indicator lamp fixed on the shell is arranged above the scram button (4).
3. A safety lock according to claim 2, wherein: the indicating lamp comprises a safety lock locking state indicating lamp (1), a main machine standby state indicating lamp (2) and a safety lock unlocking state indicating lamp (3); the main lock auxiliary mechanism (7) is connected with the safety lock locking state indicator lamp (1), the host is in standby state indicator lamp (2) and is connected with a control host of an automatic production line, and the safety lock unlocking state indicator lamp (3) is connected with the main lock auxiliary mechanism (7).
4. A method of operating a security lock as claimed in claim 1, wherein: the method comprises the following steps:
step one: in a locking state, an auxiliary lock key is inserted into an auxiliary lock key shaft (112) of an auxiliary lock mechanism (11), the auxiliary lock key drives an auxiliary lock cam to rotate anticlockwise, a jacking mechanism (94) in contact with the auxiliary lock cam moves downwards, a locking piece (91) is separated from a main lock key core (83), and a mechanical interlocking mechanism (9) is unlocked;
the rotation of the auxiliary lock cam enables the auxiliary lock contact (102) to send a stopping signal to a control host of an automatic production line, the control host of the automatic production line feeds back a signal to the interlocking wiring terminal (13), an electric interlocking mechanism (6) connected with the interlocking wiring terminal (13) through a wire cuts off a power supply of an electromagnetic coil (66), a second bow spring (62) drives a second hook hanging piece (63) to reset upwards, the clamping and positioning of a key core (83) of the main lock are disconnected, and the electric interlocking mechanism (6) is unlocked;
Step two: the main lock key is inserted into a main lock key shaft (82) of the main lock mechanism (8), the main lock key drives the main lock cam to rotate clockwise, a convex end (55) contacted with the main lock cam moves upwards in contact, the convex end (55) drives a first hook hanging piece (51) to be separated from a bolt groove in a lock hole (52), and a bolt is pulled out from the lock hole (52) to realize safe unlocking;
step three: when the main lock key is required to be locked again after the use, the main lock key is rotated anticlockwise, and the first hook hanging piece (51) is inserted into the bolt groove to lock the main lock mechanism (8); the auxiliary lock key rotates clockwise to drive the auxiliary lock cam to rotate clockwise, a jacking mechanism (94) contacted with the auxiliary lock cam moves upwards, a locking piece (91) is contacted with a main lock key core (83), and a mechanical interlocking mechanism (9) is locked;
the rotation of the auxiliary lock cam enables the auxiliary lock auxiliary contact (102) to send an interlocking signal to a control host of an automatic production line, the control host of the automatic production line feeds back a signal to the interlocking wiring terminal (13), an electric interlocking mechanism (6) connected with the interlocking wiring terminal (13) through a wire is communicated with a power supply of an electromagnetic coil (66), a second bow spring (62) drives a second hook hanging piece (63) to move downwards and is clamped on a main lock key core (83), the main lock key core (83) is clamped and positioned, and the electric interlocking mechanism (6) is locked.
5. The method of operating a security lock of claim 4, wherein: when an emergency accident occurs, an emergency stop button is pressed, an emergency stop auxiliary contact I (41) is connected with a control host of an automatic production line to send an emergency braking and stopping signal, and meanwhile, an emergency stop auxiliary contact II (42) sends a power-off signal to an electromagnetic coil (66) of the electric interlocking mechanism (6) to unlock the electric interlocking mechanism (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365774.7A CN109989626B (en) | 2019-05-05 | 2019-05-05 | Safety lock and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365774.7A CN109989626B (en) | 2019-05-05 | 2019-05-05 | Safety lock and operation method thereof |
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| CN109989626A CN109989626A (en) | 2019-07-09 |
| CN109989626B true CN109989626B (en) | 2023-12-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108179924A (en) * | 2017-11-30 | 2018-06-19 | 浙江创力电子股份有限公司 | General instrument rack is locked |
| CN109155488A (en) * | 2016-05-13 | 2019-01-04 | Erni制造有限两合公司 | The method of plug contacts group and the locking for test plug contact sets |
| KR101961130B1 (en) * | 2017-11-22 | 2019-03-25 | 주식회사 한국자동제어 | Door lock key cover for detecting door key and door key detecter with the same |
| CN210032958U (en) * | 2019-05-05 | 2020-02-07 | 马兴强 | Safety lock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9881749B1 (en) * | 2016-02-18 | 2018-01-30 | Jason P. Griffin | Lockout system for energy sources |
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- 2019-05-05 CN CN201910365774.7A patent/CN109989626B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109155488A (en) * | 2016-05-13 | 2019-01-04 | Erni制造有限两合公司 | The method of plug contacts group and the locking for test plug contact sets |
| KR101961130B1 (en) * | 2017-11-22 | 2019-03-25 | 주식회사 한국자동제어 | Door lock key cover for detecting door key and door key detecter with the same |
| CN108179924A (en) * | 2017-11-30 | 2018-06-19 | 浙江创力电子股份有限公司 | General instrument rack is locked |
| CN210032958U (en) * | 2019-05-05 | 2020-02-07 | 马兴强 | Safety lock |
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