CN204569062U - A kind ofly exempt from the overload protection device of climbing device - Google Patents
A kind ofly exempt from the overload protection device of climbing device Download PDFInfo
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- CN204569062U CN204569062U CN201520129758.5U CN201520129758U CN204569062U CN 204569062 U CN204569062 U CN 204569062U CN 201520129758 U CN201520129758 U CN 201520129758U CN 204569062 U CN204569062 U CN 204569062U
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- proximity switch
- rope
- overload protection
- motor
- frequency converter
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Abstract
The utility model relates to a kind of overload protection device of exempting to climb device, and it comprises PLC, frequency converter, motor, rope sheave unit, proximity switch.The input end of PLC is connected with proximity switch, and mouth is connected with frequency converter, and motor is connected with frequency converter, and rope sheave unit is connected with motor.By adjusting rope wheel unit; can realize climbing device load-carrying quantitative limitation to exempting from; when overload occurs; can skidding be there is in rope sheave unit; once skid, proximity switch will detect, PLC will control motor and stop; play overload protection function, improve the safety of exempting to climb device use.
Description
Technical field
The utility model relates to a kind of overload protection device of exempting to climb device.
Background technology
Exempting to climb this emerging blower fan tower barrel jacking equipment of device applies increasingly extensive, but at present, exempting to climb device does not have overload protection device usually, there is certain potential safety hazard.
Summary of the invention
The purpose of this utility model is for the existing technical deficiency exempting to climb existing for device, provides a kind of overload protection device, improves operator and uses the safety of exempting to climb device.
Overload protection device of the present utility model comprises: PLC, frequency converter, motor, rope sheave unit, proximity switch.
The input end of described PLC is electrically connected with proximity switch, and mouth is electrically connected with frequency converter; PLC receives proximity switch signal, after Internal Control Procedure process, by Frequency Converter Control motor rotation or stopping.
Described rope sheave unit is made up of drive wheel, hauling rope, press rope wheel, holddown spring, No. 1 idle pulley, sensing chip, No. 2 idle pulleys, hauling rope by press rope wheel and holddown spring on the drive wheel compacted, due to the effect of friction force between hauling rope and drive wheel, when driven by motor drive wheel operates, drive wheel just can drive hauling rope to move, hauling rope, through No. 1 idle pulley and No. 2 idle pulleys, by certain winding, just can draw and exempt to climb device up-and-down movement.
Described proximity switch is fixed near No. 1 idle pulley, and when hauling rope moves, No. 1 idle pulley rotates thereupon, and the sensing chip be fixed on No. 1 idle pulley also rotates thereupon, and the signal that sensing chip rotates by proximity switch feeds back to PLC.
The utility model is by regulating the thrust of holddown spring; can realize climbing device load-carrying quantitative limitation to exempting from; when overload occurs; hauling rope can with drive wheel generation skidding; once skid, proximity switch will detect, PLC will control motor and stop; play overload protection function, improve the safety of exempting to climb device use.
Accompanying drawing explanation
Fig. 1 is functional block diagram of the present utility model;
Fig. 2 is the schematic diagram of rope sheave unit.
Figure elements and nomenclature:
Fig. 1, Fig. 2: 1-PLC; 2-frequency converter; 3-motor; 4-rope sheave unit;
5-proximity switch; 6-drive wheel; 7-hauling rope; 8-press rope wheel; 9-holddown spring; 10-No. 1 idle pulley; 11-sensing chip; 12-No. 2 idle pulleys.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the utility model comprises PLC 1, frequency converter 2, motor 3, rope sheave unit 4, proximity switch 5, and wherein rope sheave unit 4 is made up of drive wheel 6, hauling rope 7, press rope wheel 8, holddown spring 9, No. 1 idle pulley 10, sensing chip 11, No. 2 idle pulleys 12.
The operation of exempting to climb device drives by the friction force between drive wheel 6 and hauling rope 7, by regulating holddown spring 9, the thrust between press rope wheel 8, hauling rope 7, drive wheel 6 can be changed, thus the friction force size between drive wheel 6 and hauling rope 7 can be regulated, exempt to climb before device dispatches from the factory and regulate holddown spring 9 according to nominal payload, make to exempt to climb device when exceeding nominal payload, drive wheel 6 and hauling rope 7 skid.
The winding of hauling rope 7 as shown in Figure 2, when hauling rope 7 moves, No. 1 idle pulley 10 and No. 2 idle pulleys 12 all can rotate thereupon, the sensing chip 11 be fixed on No. 1 idle pulley 10 will trigger the proximity switch 5 be arranged near No. 1 idle pulley 10, No. 1 idle pulley 10 often turns 1 circle, sensing chip 11 will trigger proximity switch 5 and produce 2 impulse singlas, and proximity switch 5 is electrically connected with the input end of PLC 1, the time cycle between PLC 1 meeting Real-Time Monitoring proximity switch 5 impulse singla.
When exempting to climb device overload; drive wheel 6 and hauling rope 7 skid; drive wheel 6 still rotates, but No. 1 idle pulley 10 rotating speed can be slack-off or stop, and proximity switch 5 produces cycle of impulse singla can be elongated; exceed the predetermined value of PLC 1 internal processes; will judge immediately to occur skidding, the mouth of PLC 1 is electrically connected with frequency converter 2, controls motor 3 out of service by frequency converter 2; drive wheel 6 stops operating, and realizes overload protection.
Above-mentioned example is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification made under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (3)
1. exempt from the overload protection device of climbing device for one kind; it is characterized in that: it comprises PLC, frequency converter, motor, rope sheave unit, proximity switch, and the input end of PLC is connected with proximity switch, and mouth is connected with frequency converter; motor is connected with frequency converter, and rope sheave unit is connected with motor.
2. a kind ofly as claimed in claim 1 exempt from the overload protection device of climbing device; it is characterized in that: described rope sheave unit comprises: drive wheel, hauling rope, press rope wheel, holddown spring, idle pulley, sensing chip; hauling rope by press rope wheel and holddown spring on the drive wheel compacted; idle pulley walked around by hauling rope, and sensing chip is fixed on idle pulley.
3. a kind ofly as claimed in claim 1 exempt from the overload protection device of climbing device, it is characterized in that: described proximity switch is arranged near idle pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520129758.5U CN204569062U (en) | 2015-03-07 | 2015-03-07 | A kind ofly exempt from the overload protection device of climbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520129758.5U CN204569062U (en) | 2015-03-07 | 2015-03-07 | A kind ofly exempt from the overload protection device of climbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204569062U true CN204569062U (en) | 2015-08-19 |
Family
ID=53861732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520129758.5U Active CN204569062U (en) | 2015-03-07 | 2015-03-07 | A kind ofly exempt from the overload protection device of climbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204569062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629513A (en) * | 2016-08-25 | 2017-05-10 | 熊黎 | Climb avoiding equipment |
-
2015
- 2015-03-07 CN CN201520129758.5U patent/CN204569062U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629513A (en) * | 2016-08-25 | 2017-05-10 | 熊黎 | Climb avoiding equipment |
| CN106629513B (en) * | 2016-08-25 | 2019-03-05 | 熊黎 | One kind is exempted to climb equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |