CN202346630U - Weight safety control circuit of hoisting equipment - Google Patents
Weight safety control circuit of hoisting equipment Download PDFInfo
- Publication number
- CN202346630U CN202346630U CN2011205047788U CN201120504778U CN202346630U CN 202346630 U CN202346630 U CN 202346630U CN 2011205047788 U CN2011205047788 U CN 2011205047788U CN 201120504778 U CN201120504778 U CN 201120504778U CN 202346630 U CN202346630 U CN 202346630U
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- weight
- control
- controller
- control contactor
- signal output
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Abstract
The utility model discloses a weight safety control circuit of hoisting equipment. Through a weight limiter, a crown block is automatically shut off after being overweighted, the crown block only runs downward to ensure the operation safety of the crown block. A weight sensor is arranged on a hoisting steel wire rope; the weight sensor is connected with a weight signal input end of a weight limiting controller in a control cabin; current transformers are respectively arranged on two power wires of an off-fire limiter; two current transformers are connected with a weight limiting controller socket; the weight limiting controller socket is connected with the a weight limiting controller power supply socket; one end of a quick-lift control contact coil is connected in parallel with one end of a slow-lift control contact coil and is respectively connected with a first control signal output end and a second control signal output end of the weight limiting controller; the other end of the quick-lift control contact coil is connected with a quick-lift signal output end of the weight limiting controller; and the other end of the slow-lift control contact coil is connected with the slow-lift signal output end of the weight limiting controller.
Description
Technical field
The utility model relates to a kind of weight-lifting equipment weight safety control circuit.
Background technology
At present, on the bank bridge overhead traveling crane of harbour, do not have the erection weight restraint device, when goods is overweight, cause disconnected rope, engine-damaged accident easily, what influence was produced carries out smoothly, simultaneously, has potential safety hazard.
The utility model content
The utility model is in order to overcome weak point of the prior art, a kind of weight-lifting equipment weight safety control circuit to be provided, through installing the weight limits device additional, in the overhead traveling crane automatic cutout of overweight back, can only move downwards, ensureing the overhead traveling crane safe in operation.
The utility model is realized through following technical proposals:
A kind of weight-lifting equipment weight safety control circuit; Comprise master controller, cutoff killer, soon rise control contactor, soon fall control contactor, slowly rise control contactor, control contactor, left lateral control contactor, right lateral control contactor fall slowly; It is characterized in that; Weight sensor is installed on hoist rope; The weight signal input end of the weight limits controller that said weight sensor is interior with being installed in control cabin is connected; On two power leads of cutoff killer, be separately installed with current transformer with; Two current transformers are connected with the weight limits socket controller, and said weight limits controller plug is connected with weight limits controller power supply base, said be connected with second control signal output ends with first control signal output ends of said weight limits controller respectively after rising control contactor coil one end and rising the one end parallel connection of control contactor coil slowly soon; The said fast other end that rises the control contactor coil is connected with the fast signal output part that rises of said weight limits controller, and the said other end that rises the control contactor coil slowly is connected with the signal output part that rises slowly of said weight limits controller.
The utlity model has following technique effect:
The control circuit of the utility model breaks off overhead traveling crane through serial connection safe limit device in major loop voluntarily after overweight, can only move downwards, thereby ensure the overhead traveling crane safe in operation, prevents that disconnected rope, engine-damaged accident from taking place.
Description of drawings
Fig. 1 is the schematic circuit diagram of the utility model weight-lifting equipment weight safety control circuit.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Fig. 1 is the schematic circuit diagram of the utility model weight-lifting equipment weight safety control circuit; The control circuit of the utility model is in original circuit, to install weight limits controller G additional; Rise contactless switch and rise contactless switch slowly through fast in the weight limits controller G control circuit and break off, overhead traveling crane can only move downwards.Comprise master controller KM1, cutoff killer KA, soon rise control contactor KM2, soon fall control contactor KM3, slowly rise control contactor KM4, control contactor KM5, left lateral control contactor KM6, right lateral control contactor KM7 fall slowly; Weight sensor is installed on hoist rope; The weight signal input end of the weight limits controller G that said weight sensor is interior with being installed in control cabin is connected; On two power leads of cutoff killer KA, be separately installed with current transformer L1 and L2; Two current transformers are connected with the weight limits socket controller; Said weight limits controller plug is connected with weight limits controller power supply base; Said be connected with the second control signal output ends D2 with the first control signal output ends D1 of said weight limits controller respectively after rising control contactor coil KA2 one end and rising control contactor coil KA4 one end parallel connection slowly soon; The said fast other end that rises control contactor coil KA2 is connected with the fast signal output part D3 that rises of said weight limits controller, and the said other end that rises control contactor coil KA4 slowly is connected with the signal output part D4 that rises slowly of said weight limits controller.
When overweight; Weight limits controller output control signal; Make to rise the coil of contactless switch or rise contactless coil outage slowly soon, break off thereby control rises contactless switch soon or rises the contactless switch open contact slowly, fast lifting motor M1 or slowly lifting motor M2 can only move downwards; Do not influence ridden in left or right direction motor M 3, thereby ensured the safe in operation of overhead traveling crane.
Claims (1)
1. weight-lifting equipment weight safety control circuit; Comprise master controller, cutoff killer, soon rise control contactor, soon fall control contactor, slowly rise control contactor, control contactor, left lateral control contactor, right lateral control contactor fall slowly; It is characterized in that; Weight sensor is installed on hoist rope; The weight signal input end of the weight limits controller that said weight sensor is interior with being installed in control cabin is connected; On two power leads of cutoff killer, be separately installed with current transformer with; Two current transformers are connected with the weight limits socket controller, and said weight limits controller plug is connected with weight limits controller power supply base, said be connected with second control signal output ends with first control signal output ends of said weight limits controller respectively after rising control contactor coil one end and rising the one end parallel connection of control contactor coil slowly soon; The said fast other end that rises the control contactor coil is connected with the fast signal output part that rises of said weight limits controller, and the said other end that rises the control contactor coil slowly is connected with the signal output part that rises slowly of said weight limits controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205047788U CN202346630U (en) | 2011-12-07 | 2011-12-07 | Weight safety control circuit of hoisting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205047788U CN202346630U (en) | 2011-12-07 | 2011-12-07 | Weight safety control circuit of hoisting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202346630U true CN202346630U (en) | 2012-07-25 |
Family
ID=46535648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205047788U Expired - Lifetime CN202346630U (en) | 2011-12-07 | 2011-12-07 | Weight safety control circuit of hoisting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202346630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108466935A (en) * | 2018-02-11 | 2018-08-31 | 江苏省特种设备安全监督检验研究院 | Urgent power-off switch power down function test circuit and its method of inspection |
-
2011
- 2011-12-07 CN CN2011205047788U patent/CN202346630U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108466935A (en) * | 2018-02-11 | 2018-08-31 | 江苏省特种设备安全监督检验研究院 | Urgent power-off switch power down function test circuit and its method of inspection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190829 Address after: Room 903, Kaili Building, 188 Tianbao Avenue, Free Trade Test Zone, Tianjin Binhai New Area, 300000 Patentee after: Tianjin Port Container Terminal Co., Ltd. Address before: 300456 No. 4380, No. 4 Xingang Road, Binhai New Area, Tianjin Patentee before: Tianjin Five Continents International Container Terminal Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |