CN212425183U - Safety interlocking device suitable for crane - Google Patents
Safety interlocking device suitable for crane Download PDFInfo
- Publication number
- CN212425183U CN212425183U CN202020716645.6U CN202020716645U CN212425183U CN 212425183 U CN212425183 U CN 212425183U CN 202020716645 U CN202020716645 U CN 202020716645U CN 212425183 U CN212425183 U CN 212425183U
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- plate
- locking
- hinged door
- limit switch
- crane
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Abstract
The utility model relates to a safety interlock suitable for hoist. The utility model aims at providing a safety interlocking device which is suitable for a crane and has simple structure, convenient use, safety and reliability, the device is arranged at a hinged door of an inlet of a hoist platform of the crane, one side of the hinged door is rotatably arranged on a fixed railing I through a hinge, and a safety interlocking device is arranged between the other side of the hinged door and a fixed railing II; the safety interlocking device is provided with a locking plate and a limit switch, wherein one end of the locking plate is rotatably arranged on the hinged door through a horizontal pin shaft, the limit switch is arranged on the fixed railing II through a base plate and is provided with a locking mechanism capable of locking the locking plate, and a limit switch circuit is connected with a control module of the crane; when the hinged door is locked, the locking plate on the hinged door corresponds to the locking mechanism on the fixed railing II in position and is locked by the locking mechanism, and the end of the locking plate, which is far away from the horizontal pin shaft, presses down the switch contact of the limit switch. The utility model is suitable for a hoist safety guarantee field.
Description
Technical Field
The utility model relates to a safety interlock suitable for hoist. The crane safety control method is suitable for the field of crane safety control.
Background
The crane belongs to special equipment, the operation safety of the crane is particularly critical, and if the crane is operated by mistake, serious personal safety hidden danger can be generated.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: aiming at the existing problems, the safety interlocking device which is simple in structure, convenient to use, safe and reliable and is suitable for the crane is provided.
The utility model adopts the technical proposal that: a safety interlock device adapted for use with a crane, comprising: the safety interlocking device is arranged at a hinged door of an inlet of a hoist platform of the crane, one side of the hinged door is rotatably arranged on the fixed railing I through a hinge, and the safety interlocking device is arranged between the other side of the hinged door and the fixed railing II;
the safety interlocking device is provided with a locking plate and a limit switch, wherein one end of the locking plate is rotatably arranged on the hinged door through a horizontal pin shaft, the limit switch is arranged on the fixed railing II through a base plate and is provided with a locking mechanism capable of locking the locking plate, and the limit switch is connected with a control module of the crane through a circuit;
when the hinged door is locked, the locking plate on the hinged door corresponds to the locking mechanism on the fixed railing II in position and is locked by the locking mechanism, and the end, far away from the horizontal pin shaft, of the locking plate presses the switch contact of the limit switch.
The locking mechanism is provided with a pinch plate fixed on the fixed railing II, a lock hole is formed in the pinch plate, and a lock pin used for locking the lock plate is inserted in the pinch plate.
The buckle plate is provided with a locking plate provided with the locking hole and a connecting plate connected to the lower end of the locking plate, and the buckle plate is connected to the fixed railing II through the connecting plate.
And a circle of convex ring with the diameter slightly larger than that of the lock hole is arranged on the lock pin.
And a pressing plate capable of pressing a switch contact on the limit switch is arranged at the end of the locking plate, which is far away from the horizontal pin shaft.
The utility model has the advantages that: the utility model discloses a jam plate on the limit switch cooperation hinge door with crane control module circuit connection judges whether there is the personnel to open the hinge door and gets into the headstock gear platform to control crane stop motion when having the hinge door to open, but the crane of just operatable when the hinge door is locked improves the security, avoids producing the personal potential safety hazard.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is a schematic view illustrating an opened state of the hinged door in the embodiment.
Fig. 4 is a top view of the embodiment.
Fig. 5 is an enlarged view of the portion B in fig. 4.
Fig. 6 is a schematic view of a locking mechanism in an embodiment.
1. A hinged door; 2. fixing a railing I; 3. a hinge; 4. fixing a railing II; 5. a locking plate; 5-1, pressing a plate; 6. a pin shaft; 7. buckling the plate; 7-1, locking plate; 7-2, connecting plates; 7-3, lock hole; 8. a lock pin; 8-1, convex ring; 9. a limit switch; 9-1, a switch contact; 10. a backing plate.
Detailed Description
The embodiment is a safety interlocking device suitable for a crane, which is arranged at a hinged door of an inlet of a hoist platform of the crane, wherein a fixed railing I is arranged at the left side of the hinged door, and the hinged door is rotatably arranged on the fixed railing I through a hinge; and a fixed railing II is arranged on the right side of the hinged door, and the safety interlocking device is arranged between the hinged door and the fixed railing II.
The safety interlock device in this example has a lock plate and a limit switch, wherein one end of the lock plate is rotatably mounted on the hinged door via a horizontal pin, and the lock plate can rotate in a vertical plane around the horizontal pin. In the embodiment, a locking mechanism and a limit switch are arranged at the position, close to the height of the locking plate on the hinged door, on the fixed railing II, and the limit switch is fixed on the fixed railing II through a base plate. The switch contact of the limit switch faces upwards, the limit switch is in circuit connection with the control module of the crane, and the crane can operate when the switch contact of the limit switch is pressed; and when the switch contact of the limit switch is in a normal state without stress, the crane stops running.
Locking mechanical system has buckle and lockpin in this embodiment, and the buckle has the lockplate and connects in the connecting plate of lockplate lower extreme, and the lockplate forms L type structure with the connecting plate of lower extreme, and the connecting plate connects on fixed railing II. The upper part of the locking plate is provided with a locking hole, and a locking pin is inserted in the locking hole.
In order to prevent the lock pin from falling out of the lock hole, a circle of convex ring with the diameter slightly larger than that of the lock hole is arranged on the lock pin, and the convex ring is positioned at the end, close to the fixed railing II, of the lock pin.
In the embodiment, the lower part of the locking plate, which is far away from the horizontal pin shaft end, is provided with the pressing plate, and the locking plate can press the switch contact on the limit switch through the pressing plate on the locking plate.
The working principle of the embodiment is as follows:
when the hinged door is locked, a lock plate on the hinged door is positioned between the lock plate and the fixed railing II, the upper part of the lock plate is locked by a lock pin on a buckle plate, the lower part of the lock plate presses a switch contact of the limit switch through a pressure plate, and the lock plate is tightly pressed against the lock pin on the upper part under the action of a return spring of the limit switch;
when a person enters the hoist platform, the lock pin is pulled open, the lock plate is not locked by the lock pin above the lock plate, the lock plate can be loosened under the action of a return spring of the limit switch, the lock plate is rotated to the other side by hand, a switch contact on the limit switch is reset and sends a signal to a control module of the crane, the crane stops running, and the person can enter the platform;
when a person leaves the hoist platform, the locking plate is broken off, so that the locking plate rotates to a position between the locking plate and the fixed railing II, the pressing plate on the locking plate completely presses the switch contact of the limit switch, then the lock pin is pushed to the position above the locking plate, the limit switch sends a signal to the control module of the crane at the moment, and then the crane can be operated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A safety interlock device adapted for use with a crane, comprising: the safety interlocking device is arranged at a hinged door of an inlet of a hoist platform of the crane, one side of the hinged door is rotatably arranged on the fixed railing I through a hinge, and the safety interlocking device is arranged between the other side of the hinged door and the fixed railing II;
the safety interlocking device is provided with a locking plate and a limit switch, wherein one end of the locking plate is rotatably arranged on the hinged door through a horizontal pin shaft, the limit switch is arranged on the fixed railing II through a base plate and is provided with a locking mechanism capable of locking the locking plate, and the limit switch is connected with a control module of the crane through a circuit;
when the hinged door is locked, the locking plate on the hinged door corresponds to the locking mechanism on the fixed railing II in position and is locked by the locking mechanism, and the end, far away from the horizontal pin shaft, of the locking plate presses the switch contact of the limit switch.
2. A safety interlock device as claimed in claim 1, wherein: the locking mechanism is provided with a pinch plate fixed on the fixed railing II, a lock hole is formed in the pinch plate, and a lock pin used for locking the lock plate is inserted in the pinch plate.
3. A safety interlock device as claimed in claim 2, wherein: the buckle plate is provided with a locking plate provided with the locking hole and a connecting plate connected to the lower end of the locking plate, and the buckle plate is connected to the fixed railing II through the connecting plate.
4. A safety interlock device as claimed in claim 2 or claim 3, wherein: and a circle of convex ring with the diameter slightly larger than that of the lock hole is arranged on the lock pin.
5. A safety interlock device as claimed in claim 1, wherein: and a pressing plate capable of pressing a switch contact on the limit switch is arranged at the end of the locking plate, which is far away from the horizontal pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020716645.6U CN212425183U (en) | 2020-04-30 | 2020-04-30 | Safety interlocking device suitable for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020716645.6U CN212425183U (en) | 2020-04-30 | 2020-04-30 | Safety interlocking device suitable for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212425183U true CN212425183U (en) | 2021-01-29 |
Family
ID=74288233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020716645.6U Active CN212425183U (en) | 2020-04-30 | 2020-04-30 | Safety interlocking device suitable for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212425183U (en) |
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2020
- 2020-04-30 CN CN202020716645.6U patent/CN212425183U/en active Active
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