CN202007020U - Pull switch for conveying belt - Google Patents
Pull switch for conveying belt Download PDFInfo
- Publication number
- CN202007020U CN202007020U CN2011200604056U CN201120060405U CN202007020U CN 202007020 U CN202007020 U CN 202007020U CN 2011200604056 U CN2011200604056 U CN 2011200604056U CN 201120060405 U CN201120060405 U CN 201120060405U CN 202007020 U CN202007020 U CN 202007020U
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- CN
- China
- Prior art keywords
- pull switch
- closed contact
- normally
- normally closed
- indicator lamp
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a pull switch for a conveying belt and belongs to the technical field of electrical control. The pull switch comprises a plurality of normally-closed contacts, a pull rope and a grounding outer shell, wherein the normally-closed contacts are connected in series; the pull rope is used for controlling on-off of each normally-closed contact; and the grounding outer shell is used for shielding and packaging each normally-closed contact. The pull switch is characterized in that both ends of each normally-closed contact are respectively connected in parallel with a first voltage indicating lamp and a second voltage indicating lamp which are earthed. With the adoption of the pull switch for the conveying belt is, the state of the pull switch can be clear at a glance and is very visual; the operation of disassembling a cover for detecting does not need to be carried out; the time of searching the target pull switch is saved for operators or maintenance personnel; and the working efficiency can be obviously improved.
Description
Technical field
The utility model relates to a kind of used for conveyer belt pull switch, belongs to the Electrical Control Technology field.
Background technology
Pull switch is widely used in the protection of various belt systems, in using at the scene, the normally closed contact of many pull switches is connected, and inserts in the conveyer electric control system.When load-transfer device runs into unusual condition, can stop load-transfer device fast with pull switch.
Existing used for conveyer belt pull switch as shown in Figure 1 and Figure 2.This pull switch in use often runs into following two kinds of problems:
1. in the occasion that has many pull switch series connection to use, when after a pull switch is pulled, needing to reset, if when the personnel that go to reset do not know its accurate position, can only check in turn whether the reset button of pull switch is pressed, reduce the work efficiency of operating personal.
2. false triggering occurs as a pull switch, when promptly causing the normally closed point of pull switch to disconnect, in numerous pull switches that is cascaded, find out relatively difficulty of out of order pull switch owing to reasons such as dust, device failure.The maintainer must take the pull switch shell apart just may find out the trouble point by electric measurement.
The utility model content
The purpose of this utility model is: the problem at prior art exists, a kind of safe and reliable used for conveyer belt pull switch is proposed, use this pull switch after, the related personnel can find out rapidly and need reset or the pull switch of et out of order.
In order to reach above purpose, the grounding shell that used for conveyer belt pull switch of the present utility model comprises series connected a plurality of normally closed contact, is used to control the open circuited stay cord of each normally closed contact and is used to shield each normally closed contact of package is characterized in that: the two ends of each normally closed contact are parallel with connected to chassis first voltage indicator lamp and second voltage indicator lamp respectively.
According to said structure, when the normally closed contact of a pull switch is pulled because of stay cord or disconnects because of false triggering, still there is voltage in the front end of this normally closed contact and its rear end loss of voltage, and second voltage indicator lamp goes out so first voltage indicator lamp of this pull switch is bright.When in numerous pull switches, seeking this pull switch, only need seek the bright and pull switch that second voltage indicator lamp goes out of first voltage indicator lamp and get final product, simplify the searching process greatly, help increasing work efficiency.
Further, described voltage indicator lamp is a neon bulb.
Further, the ground terminal of described voltage indicator lamp is connected to described grounding shell.
Again further, usefulness is housed so that normally closed contact returns to the reset button of normally off on the described grounding shell.
The beneficial effects of the utility model are: at the normally closed contact two ends voltage indicator lamp is set respectively, be equivalent to respectively adorn an electroprobe at each normally closed contact two ends of existing pull switch, operating personal is come into plain view to the running condition of each normally closed contact of pull switch, very directly perceived, need not to tear open lid and detect whether can know each normally closed contact normal; Thereby be the time that operating personal or maintainer have saved searching target pull switch, and can significantly improve work efficiency.
Description of drawings
Below in conjunction with accompanying drawing used for conveyer belt pull switch of the present utility model is further described.
Fig. 1 is existing pull switch structural representation.
Fig. 2 is the electrical schematic diagram of Fig. 1 pull switch.
Fig. 3 is the structural representation of the utility model embodiment used for conveyer belt pull switch.
Fig. 4 is the electrical schematic diagram of the utility model embodiment used for conveyer belt pull switch.
Label among above-mentioned each figure is represented respectively:
The 1-stay cord, the 2-shell, the 3-reset button, 41-first voltage indicator lamp, 42-second voltage indicator lamp, the 5-neon bulb, the 6-high resistance measurement, L-connects an end of power supply, and C-connects an end of controlled member.
The specific embodiment
Embodiment
The used for conveyer belt pull switch of present embodiment as shown in Figure 3 and Figure 4, comprise series connected a plurality of normally closed contact, control the grounding shell 2 of the open circuited stay cord 1 of each normally closed contact and shielding package each normally closed contact, Fig. 3 has only reflected the structure of pull switch at single normally closed contact place, and the structure at other normally closed contact places roughly the same.As shown in Figure 4, the two ends of each normally closed contact of pull switch are parallel with connected to chassis first voltage indicator lamp 41 and second voltage indicator lamp 42 respectively, and first voltage indicator lamp 41 and second voltage indicator lamp 42 of present embodiment all adopt neon bulb.First voltage indicator lamp 41 of present embodiment and second voltage indicator lamp 42 are by being connected grounding shell 2 ground connection, and neon bulb is in series with high resistance measurement 5, as shown in Figure 4.Be equipped with on the grounding shell 2 and use so that normally closed contact returns to the reset button 3 of normally off.
The used for conveyer belt pull switch principle of work of present embodiment as shown in Figure 4, L end is connected with power supply, C holds and is connected with controlled member.When each pull switch normal operation, first, second voltage indicator lamp 41,42 of the pull switch that all series connection are used all is bright.Under the situation of first pull switch normally, if the normally closed contact of second pull switch is pulled because of stay cord or disconnect because of false triggering, bright and second voltage indicator lamp 42 of first voltage indicator lamp 41 of second pull switch goes out so, and the 3rd all later first, second voltage indicator lamps 41,42 of pull switch all go out.When seeking the pull switch that need reset or break down, one side a glance can be seen the complete bright location point that goes out entirely in the one side that occurs on whole piece pull switch circuit, thereby can find out the pull switch of fault target rapidly, shorten hunting time greatly.In addition, can also be in conjunction with the state failure judgement of reset button, all bright such as first, second voltage indicator lamp of somewhere pull switch, and the reset button of this pull switch does not reset, the contact that this pull switch then is described takes place to burn melts fault.
The present embodiment product is easily manufactured, as long as high resistance measurement that will make and neon bulb are connected the contact and the shell of pull switch respectively; Use simply, occupation mode is the same with traditional pull switch, need not extra wiring; It is clear that mode of operation shows, by observing the state of two voltage indicator lamps, can analyze the whether conducting of current pull switch, whether the previous stage control circuit exists fault; Safe and reliable, even high resistance measurement and neon lamp module damage because its overall electrical resistance resistance is higher, can cause ground fault, and its use is had no effect.
In addition to the implementation, the utility model can also have other embodiments, also can be replaced by diode, bulb or other indicator lamps of series connection high resistance measurement such as neon bulb.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1. used for conveyer belt pull switch, the grounding shell that comprises series connected a plurality of normally closed contact, is used to control the open circuited stay cord of each normally closed contact and is used to shield each normally closed contact of package is characterized in that: the two ends of each normally closed contact are parallel with connected to chassis first voltage indicator lamp and second voltage indicator lamp respectively.
2. pull switch according to claim 1 is characterized in that: described voltage indicator lamp is a neon bulb.
3. pull switch according to claim 2 is characterized in that: the ground terminal of described voltage indicator lamp is connected to described grounding shell.
4. pull switch according to claim 3 is characterized in that: be equipped with on the described grounding shell and use so that normally closed contact returns to the reset button of normally off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200604056U CN202007020U (en) | 2011-03-09 | 2011-03-09 | Pull switch for conveying belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200604056U CN202007020U (en) | 2011-03-09 | 2011-03-09 | Pull switch for conveying belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202007020U true CN202007020U (en) | 2011-10-12 |
Family
ID=44748678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200604056U Expired - Fee Related CN202007020U (en) | 2011-03-09 | 2011-03-09 | Pull switch for conveying belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202007020U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950701A (en) * | 2014-02-21 | 2014-07-30 | 秦皇岛港股份有限公司 | Stay wire flash detection system for belt conveyor control loop |
| CN110525914A (en) * | 2019-09-24 | 2019-12-03 | 安徽马钢矿业资源集团有限公司 | A kind of pull switch warning device |
-
2011
- 2011-03-09 CN CN2011200604056U patent/CN202007020U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950701A (en) * | 2014-02-21 | 2014-07-30 | 秦皇岛港股份有限公司 | Stay wire flash detection system for belt conveyor control loop |
| CN110525914A (en) * | 2019-09-24 | 2019-12-03 | 安徽马钢矿业资源集团有限公司 | A kind of pull switch warning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20190309 |