CN201788570U - Limit switchgear of safety door - Google Patents
Limit switchgear of safety door Download PDFInfo
- Publication number
- CN201788570U CN201788570U CN201020287910XU CN201020287910U CN201788570U CN 201788570 U CN201788570 U CN 201788570U CN 201020287910X U CN201020287910X U CN 201020287910XU CN 201020287910 U CN201020287910 U CN 201020287910U CN 201788570 U CN201788570 U CN 201788570U
- Authority
- CN
- China
- Prior art keywords
- limit switch
- guardrail
- limit
- audible
- switchgear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a limit switchgear of a safety door. The limit switchgear comprises a guardrail cross bar (2), a guardrail frame (5), a limit switch (1) and an audible and visual alarm (3); the guardrail cross bar (2) is capable of rotating around a rotating shaft (4) relatively to the guardrail frame (5); the limit switch (1) is arranged in the guardrail frame (5); the contact of the limit switch (1) is in contact with the guardrail cross bar (2); and the limit switch (1) is connected with the audible and visual alarm (3) through a wire or in a wireless manner. The limit switchgear has the advantages of simple structure, convenience in operation and practical use.
Description
Technical field
The utility model relates to the safety feature field, refers more particularly to a kind of safety door limit switch device.
Background technology
At present the machine of sealing or equipment overhaul and when checking, other operating personnel are not knowing the people is arranged in machine or equipment the inside because personnel enter, and open machine or equipment is made maloperation, harm personnel's safety.Security system price on the existing market is more expensive, and at machine or equipment certain limitation is arranged.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point of the prior art and a kind of simple in structure, safety door limit switch device that mounting means is simple, economical and practical is provided.
The utility model is realized in the following way:
A kind of safety door limit switch device is characterized in that: include guardrail railing 2, guardrail hurdle frame 5, limit switch 1 and audible-visual annunciator 3; Described guardrail railing 2 can be according to rotating shaft 4 with respect to guardrail hurdle frame 5 rotation, and guardrail hurdle frame 5 is equiped with limit switch 1, and the contact of limit switch 1 contacts with guardrail railing 2, limit switch 1 with link to each other by wired or wireless mode audible-visual annunciator 3.
When the safety barrier railing did not lift, the normally closed point of limit switch disconnected, and audible-visual annunciator is action not, and limit switch is in on-state when lifting, and at this moment audible-visual annunciator moves, thereby played the effect of security warning.
In sum, a kind of safety door limit switch device of simple in structure, the easy to operate practicality of the utility model.
Description of drawings
Fig. 1 the utility model structural representation;
Fig. 2 the utility model circuit diagram;
Embodiment
Now in conjunction with the accompanying drawings, the utility model embodiment is described in detail in detail:
As shown in Figure 1 and Figure 2, a kind of safety door limit switch device is characterized in that: include guardrail railing 2, guardrail hurdle frame 5, limit switch 1 and audible-visual annunciator 3; Described guardrail railing 2 can be according to rotating shaft 4 with respect to guardrail hurdle frame 5 rotation, and guardrail hurdle frame 5 is equiped with limit switch 1, and the contact of limit switch 1 contacts with guardrail railing 2, limit switch 1 with link to each other by wired or wireless mode audible-visual annunciator 3.
When operating personnel do not open safety barrier railing 2, the normally closed point of limit switch 1 disconnects, the audible-visual annunciator 3 that links to each other with limit switch 1 does not have sound of movement, limit switch 1 contacting was connected when operating personnel opened safety barrier railing 2, its audible-visual annunciator that is connected 3 received signals and sound of movement, other associative operations personnel know that there is people's operation in this zone, thereby play the effect of security warning.
Claims (1)
1. a safety door limit switch device is characterized in that: include guardrail railing (2), guardrail hurdle frame (5), limit switch (1) and audible-visual annunciator (3); Described guardrail railing (2) can rotate with respect to guardrail hurdle frame (5) according to rotating shaft (4), guardrail hurdle frame (5) is equiped with limit switch (1), the contact of limit switch (1) contacts with guardrail railing (2), limit switch (1) with link to each other by wired or wireless mode audible-visual annunciator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020287910XU CN201788570U (en) | 2010-08-10 | 2010-08-10 | Limit switchgear of safety door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020287910XU CN201788570U (en) | 2010-08-10 | 2010-08-10 | Limit switchgear of safety door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788570U true CN201788570U (en) | 2011-04-06 |
Family
ID=43820527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020287910XU Expired - Fee Related CN201788570U (en) | 2010-08-10 | 2010-08-10 | Limit switchgear of safety door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201788570U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208167A (en) * | 2013-04-19 | 2013-07-17 | 国家电网公司 | High-voltage switch cabinet door alarm starting device |
| CN104631304A (en) * | 2015-02-06 | 2015-05-20 | 江苏理工学院 | Separating cascade guardrail disengagement sensing device |
-
2010
- 2010-08-10 CN CN201020287910XU patent/CN201788570U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208167A (en) * | 2013-04-19 | 2013-07-17 | 国家电网公司 | High-voltage switch cabinet door alarm starting device |
| CN104631304A (en) * | 2015-02-06 | 2015-05-20 | 江苏理工学院 | Separating cascade guardrail disengagement sensing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20130810 |