CN204251227U - A kind of crane hoisting mechanism safety guard - Google Patents
A kind of crane hoisting mechanism safety guard Download PDFInfo
- Publication number
- CN204251227U CN204251227U CN201420720517.3U CN201420720517U CN204251227U CN 204251227 U CN204251227 U CN 204251227U CN 201420720517 U CN201420720517 U CN 201420720517U CN 204251227 U CN204251227 U CN 204251227U
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- China
- Prior art keywords
- output interface
- input
- microprocessor
- lifting mechanism
- power
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of crane hoisting mechanism safety guard, comprise housing, microprocessor and input/output interface module, described microprocessor is integrated with nondeclarative memory unit, data storage cell and DLL (dynamic link library), compares for carrying out computing to the data received; Described input/output interface module comprises digital input interface, relay output interface and high-speed counting input interface.The utility model filled up existing lifting mechanism control in security breaches caused not in time to the reaction of most state residing for mechanism during et out of order; carry out detection to the situation in stopped status, braking moment and operational process to analyze; when occurring abnormal; output signal control brake band-type brake, cut-out electrical source of power; ensure lifting mechanism safety; it is mainly used in the multiple protective realizing lifting mechanism; improve hoisting crane electric system safe class; meet safety requirements that is main and dangerous situation, be applicable to the lifting mechanism that all kinds of safety requirements is high.
Description
Technical field
The utility model belongs to field of electrical control, is applicable to the hoisting crane, particularly a kind of crane hoisting mechanism safety guard of the important and hazardous materials of handling.
Background technology
Chinese patent ZL200910011399.2 discloses a kind of method for real-time monitoring of hoisting mechanism of crane; the method is the method for supervising for planetary transmission conceptual design; for planetary reduction gear double freedom feature, increase accident brake situation in reel side; safety detection and protection are carried out to mechanism, is not suitable for the lifting mechanism of other driving type.
The existing ladle carne safety guard that hoists comprises: limit limit switch, overspeed switch, overload protection device etc., when occurring that electrical malfunction causes mechanism's get out of hand, have two approach to protect: limit limit switch and overspeed switch.And these two protections are worked and all needed to reach corresponding condition, limit limit switch only works when lifting mechanism reaches capacity position; Overspeed switch only works when lifting mechanism running velocity reaches setting protection value.Therefore, these two kinds protections are different with position et out of order the reaction time in friction speed, and this reaction not in time often causes safety misadventure.
By analyzing the ladle carne load falling accident occurred in recent years, the reason caused the accident due to electric system problem is as follows:
Lifting mechanism generally adopts variable voltage control or frequency control, controlled by the drg dominating pair of vertices drg of speed regulation device inside, this control only relies on speed regulation device, once there is following situation in speed regulation device inside, mechanism will be caused out of control, personal security under serious threat handling article and machine:
1, the control desk of speed regulation device self breaks down and causes control program chaotic;
2, when braking instruction sends, control for brake output point is failure to actuate and is caused drg can not band-type brake on request.
And fail to work in time at the above fail-safe fender guard of appearance thus result in the generation of safety misadventure.Therefore, invent a kind of independent of speed regulation device, can to carry out in real time monitoring with the lifting mechanism safety guard of protection to mechanism be again very necessary.
Summary of the invention
For solving the problems referred to above that prior art exists, the utility model will design a kind of crane hoisting mechanism safety guard can guaranteeing lifting mechanism safety.
To achieve these goals, the technical solution of the utility model is as follows: a kind of crane hoisting mechanism safety guard, comprise housing, power module, microprocessor and input/output interface module, described power module, microprocessor and input/output interface module are arranged in housing, described housing are provided with power light, system failure indicator lamp, connection terminal and DLL (dynamic link library); Described power module is connected with connection terminal, microprocessor and input/output interface module respectively, described microprocessor is connected with input/output interface module and DLL (dynamic link library) respectively, and described input/output interface module is also connected with power light, system failure indicator lamp respectively;
Described power module for receiving external AC 220V power supply, and is converted into direct supply;
Described microprocessor is integrated with nondeclarative memory unit, data storage cell and DLL (dynamic link library), compares for carrying out computing to the data received;
Described input/output interface module comprises digital input interface, relay output interface and high-speed counting input interface, described digital input interface acquisition operations gear signal, described high-speed counting input interface collecting mechanism speed signal, by microprocessor, computing is carried out to the signal collected and compare process, result is exported by relay output interface.When abnormal condition appear in microprocessor judges lifting mechanism, will control output relay action, output signal, electric system cuts off lifting mechanism electrical source of power, makes speed regulation device power-off, brake, thus ensures lifting mechanism safety.
Compared with prior art, the utility model has following beneficial effect:
1, the utility model fill up existing lifting mechanism control in security breaches caused not in time to the reaction of most state residing for mechanism during et out of order; carry out detection to the situation in stopped status, braking moment and operational process to analyze; when occurring abnormal; output signal control brake band-type brake, cut-out electrical source of power; ensure lifting mechanism safety; it is mainly used in the multiple protective realizing lifting mechanism; improve hoisting crane electric system safe class, meet safety requirements that is main and dangerous situation.
2, the utility model develops a kind of lifting mechanism safety guard independent of the speed regulation device operation in electric system and guard method; eliminate conventional electrical system and rely on using speed regulation device as control device, again the drawback that speed regulation device checks the correctness controlled; when the utility model judges to occur abnormal; output action signal; have precedence over speed regulation device control brake band-type brake, cut off electrical source of power, ensure lifting mechanism safety.
3, the utility model is completely independently device, does not rely on the work such as PLC, speed regulation device, therefore strong adaptability, is applicable to the lifting mechanism that all kinds of safety requirements is high.
Accompanying drawing explanation
The utility model has 3, accompanying drawing, wherein:
Fig. 1 is lifting mechanism safety guard external structure.
Fig. 2 is the inner connection diagram of lifting mechanism safety guard.
Fig. 3 is the diagram of circuit of the guard method of lifting mechanism safety guard.
In figure: 1, housing, 2, power light, 3, system failure indicator lamp, 4, connection terminal, 5, DLL (dynamic link library), 6, power module, 7, microprocessor, 8, input/output interface module.
Detailed description of the invention
The utility model passes through running velocity and the gear signal of testing agency, carries out computing, compares, output signal to the electric control system on hoisting crane, control gear brake, electrical source of power in inside, ensures mechanism's safe in operation.
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the utility model comprises housing 1, power light 2, system failure indicator lamp 3, connection terminal 4, DLL (dynamic link library) 5.Housing 1 protects as device, power light 2 and system failure indicator lamp 3 indicate as the state of device inside, connection terminal 4 is connected wiring as device with outside and uses, and programming computer is connected with microprocessor 7 by DLL (dynamic link library) 5, uses for downloading and revising parameter.
As shown in Figure 2, the utility model comprises power module 6, microprocessor 7 and input/output interface module 8.Power module 6 for receiving external AC 220V power supply, and is converted into the inner direct supply needed; Microprocessor 7 is integrated with nondeclarative memory unit, data storage cell and serial interface, compares for carrying out computing to the data received; Input/output interface module 8 adopts failure-free isolation technology, for receiving outward sign and exporting control signal.
Be illustrated in figure 3 the utility model diagram of circuit:
By consistent with governor setting speed furnishing for the 1-4 shelves speed in microprocessor 7.In operational process, once exception judged by microprocessor 7, output relay action will be controlled, output signal, shoutoff mechanism electrical source of power, governor power-off, brake, thus ensure institution secure.Abnormal condition are divided following several:
(1) when operating handle is stamped and is risen each shelves, simultaneously detection speed signal, if descent direction signal now detected, time length more than 0.6s, then output relay action.
(2) operating handle decline each shelves time, gear signal is compared with speed signal, if feedback speed exceedes 35% of gear speed, time length more than 1s, then output relay action.
(3) when operating handle is from each shelves back to zero position, if still speed signal detected, time length more than 3s, then output relay action.
Claims (1)
1. a crane hoisting mechanism safety guard, it is characterized in that: comprise housing (1), power module (6), microprocessor (7) and input/output interface module (8), described power module (6), microprocessor (7) and input/output interface module (8) are arranged in housing (1), described housing (1) are provided with power light (2), system failure indicator lamp (3), connection terminal (4) and DLL (dynamic link library) (5); Described power module (6) is connected with connection terminal (4), microprocessor (7) and input/output interface module (8) respectively, described microprocessor (7) is connected with input/output interface module (8) and DLL (dynamic link library) (5) respectively, and described input/output interface module (8) is also connected with power light (2), system failure indicator lamp (3) respectively;
Described power module (6) for receiving external AC 220V power supply, and is converted into direct supply;
Described microprocessor (7) is integrated with nondeclarative memory unit, data storage cell and DLL (dynamic link library) (5), compares for carrying out computing to the data received;
Described input/output interface module (8) comprises digital input interface, relay output interface and high-speed counting input interface, described digital input interface acquisition operations gear signal, described high-speed counting input interface collecting mechanism speed signal, by microprocessor (7), computing is carried out to the signal collected and compare process, result is exported by relay output interface; When microprocessor (7) judges that abnormal condition appear in lifting mechanism, will control output relay action, output signal, electric system cuts off lifting mechanism electrical source of power, makes speed regulation device power-off, brake, thus ensures lifting mechanism safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420720517.3U CN204251227U (en) | 2014-11-25 | 2014-11-25 | A kind of crane hoisting mechanism safety guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420720517.3U CN204251227U (en) | 2014-11-25 | 2014-11-25 | A kind of crane hoisting mechanism safety guard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204251227U true CN204251227U (en) | 2015-04-08 |
Family
ID=52955556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420720517.3U Withdrawn - After Issue CN204251227U (en) | 2014-11-25 | 2014-11-25 | A kind of crane hoisting mechanism safety guard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204251227U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444827A (en) * | 2014-11-25 | 2015-03-25 | 大连华锐重工起重机有限公司 | Safety protection device for hoisting mechanism of crane and protection method thereof |
| CN106429840A (en) * | 2016-10-19 | 2017-02-22 | 上海振华重工(集团)股份有限公司 | Electric system of wave compensation crane |
-
2014
- 2014-11-25 CN CN201420720517.3U patent/CN204251227U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444827A (en) * | 2014-11-25 | 2015-03-25 | 大连华锐重工起重机有限公司 | Safety protection device for hoisting mechanism of crane and protection method thereof |
| CN104444827B (en) * | 2014-11-25 | 2016-06-15 | 大连华锐重工起重机有限公司 | A kind of crane hoisting mechanism safety guard and guard method thereof |
| CN106429840A (en) * | 2016-10-19 | 2017-02-22 | 上海振华重工(集团)股份有限公司 | Electric system of wave compensation crane |
| CN106429840B (en) * | 2016-10-19 | 2018-08-03 | 上海振华重工(集团)股份有限公司 | A kind of electrical system of heave compensation crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150408 Effective date of abandoning: 20160615 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |