CN210214600U - Ascending limiting alarm device of bridge crane - Google Patents
Ascending limiting alarm device of bridge crane Download PDFInfo
- Publication number
- CN210214600U CN210214600U CN201920703426.1U CN201920703426U CN210214600U CN 210214600 U CN210214600 U CN 210214600U CN 201920703426 U CN201920703426 U CN 201920703426U CN 210214600 U CN210214600 U CN 210214600U
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- Prior art keywords
- travel switch
- double
- audible
- contact travel
- alarm
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- 230000001174 ascending effect Effects 0.000 title claims abstract description 16
- 230000000007 visual effect Effects 0.000 claims abstract description 20
- 230000002650 habitual effect Effects 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses a bridge crane rise limit alarm device, which comprises a rise control circuit, a double-contact travel switch and an audible and visual alarm, wherein one end of the audible and visual alarm is directly electrically connected to a zero line, and the other end of the audible and visual alarm is electrically connected to a normally open point of the double-contact travel switch; the other normally open point of the double-contact travel switch is electrically connected to a live wire; and a normally closed point of the double-contact travel switch is connected in series with a normal closed point and a power supply for the ascending control circuit. The utility model discloses a bridge crane spacing alarm device that rises can in time remind the crane worker consciously to return the zero-bit with the controller handle, and the number of times that the maloperation used the spacing travel switch outage that rises obviously reduces, has changed the crane worker habitual frequent violating the regulations, makes the crane worker cultivate into the good custom according to the operation of seal, avoids the incident, improves hoist operating safety factor.
Description
Technical Field
The utility model relates to an alarm device rises, concretely relates to bridge crane spacing alarm device that rises belongs to crane accessories technical field.
Background
The original crane has two ascending limit positions, a crane often has misoperation, a controller handle is driven to ascend, the controller handle is forgotten to return to a zero position, misoperation or habitual violation operation occurs, the ascending limit switch is used for power-off parking, the ascending limit switch cannot achieve one hundred percent of safety, and potential safety hazards exist; the existing crane limit alarm mode is single in type, such as Chinese patent application number: 201811214594.0, a spacing alarm system of hoist is disclosed, which comprises a controller, stopper I, stopper II, stopper III and alarm, stopper I is connected to the controller, stopper II and stopper III, alarm is connected to stopper I, stopper III is installed at hoisting part end, stopper II is installed in the middle of hoisting part, stopper I is installed on hoisting part top, can in time remind staff's the altitude condition, stop the phenomenon that the hoist appears blocking, the hoist can not appear and rise the emergence that can not rise or descend the condition to half, save time, do not need to spend a large amount of funds and change spare part, but it can't realize rising spacing and alarm integration setting.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a bridge crane spacing alarm device that rises improves hoist operating safety factor, avoids taking place the incident.
The utility model discloses a bridge crane rises limit alarm device, changes hoist rising limit switch into double contact travel switch, and the control circuit that rises uses the normal close point, namely its normal close point of double contact travel switch is concatenated to the control circuit that rises and uses normal close point and power; the power supply is independently connected to the other normally-open point of the double-contact travel switch, and an audible and visual alarm is connected in series at the same time, namely one end of the audible and visual alarm is directly and electrically connected to a zero line, and the other end of the audible and visual alarm is electrically connected to the normally-open point of the double-contact travel switch; the other normally open point of the double-contact travel switch is electrically connected to a live wire; when a crane worker fails to operate, the handle of the controller forgets to return to the zero position, and the lifting position reaches the lifting limit travel switch, the audible and visual alarm gives an alarm to remind the crane worker to reset the control handle in time, so that the situation that a steel wire rope is broken due to the fact that a hoisted object rushes to push the control handle is avoided, safety accidents occur, and the safety coefficient of crane operation is improved; by additionally arranging the audible and visual alarm, after the lifting hook reaches the limit position, the audible and visual alarm gives an alarm to remind a worker to return the controller to the zero position in time, so that the frequency of misoperation of a crane worker is reduced from the viewpoint of visitation, and the safety factor of the use of the crane is improved.
In a preferred embodiment, the audible and visual alarm is arranged on the side surface of the trolley.
In a preferred embodiment, the double-contact travel switch is an LX4-32 type limit switch.
Compared with the prior art, the utility model discloses a bridge crane spacing alarm device that rises has following advantage: the former driving worker operates 8 hours of a shift, and the number of times of wrong use ascending limit travel switch outage can reach more than ten times, installs the ascending limit alarm additional after, can in time remind the driving worker consciously return the zero position with the controller handle, and the number of times of wrong operation use ascending limit travel switch outage obviously reduces, has changed driving worker habitual frequency of violating regulations, makes the driving worker develop the good custom of operation according to the chapter, avoids the incident, improves hoist operation factor of safety.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Detailed Description
Example 1:
as shown in fig. 1, the ascending limit alarm device of the bridge crane of the present invention comprises an ascending control circuit 1, and further comprises a double-contact travel switch 2 and an audible and visual alarm 3, wherein one end of the audible and visual alarm 3 is directly electrically connected to a zero line N, and the other end of the audible and visual alarm 3 is electrically connected to a normally open point of the double-contact travel switch 2; the other normally open point of the double-contact travel switch 2 is electrically connected to a live wire L; the normally closed point of the double-contact travel switch 2 is connected in series with the ascending control circuit 1 to use the normally closed point and the power supply.
Wherein, the audible and visual alarm 3 is arranged on the side surface of the trolley 4; the double-contact travel switch 2 is an LX4-32 type limit switch.
The improvement process is as follows:
1. the ascending limit is replaced by an LX4-32 type limit switch;
2. a sound-light alarm is arranged on the side surface of the trolley;
3. taking a normally-on point in an LX4-32 type limit switch;
4. taking a 220v alternating current power supply, and directly connecting a zero line to an audible and visual alarm;
5. the live wire is connected to the normally-open point in the LX4-32 type limit switch and then is connected to the audible and visual alarm
6. When the hook limit rises to the limit position, after the LX4-32 type limit heavy hammer is lifted by the limit bracket on the hook, a normally open point in the LX4-32 type limit is closed, a circuit is conducted, and an alarm gives an alarm to remind a driver that the hook has risen to the limit position;
7. after the driver hears the alarm, the controller is operated to return to zero position, and the lifting hook stops rising.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (3)
1. The utility model provides a bridge crane spacing alarm device that rises, includes the control scheme that rises, its characterized in that: the alarm also comprises a double-contact travel switch and an audible and visual alarm, wherein one end of the audible and visual alarm is directly and electrically connected to a zero line, and the other end of the audible and visual alarm is electrically connected to a normally-open point of the double-contact travel switch; the other normally open point of the double-contact travel switch is electrically connected to a live wire; and a normally closed point of the double-contact travel switch is connected in series with a normal closed point and a power supply for the ascending control circuit.
2. The bridge crane ascending limit alarm device according to claim 1, wherein: the audible and visual alarm is arranged on the side surface of the trolley.
3. The bridge crane ascending limit alarm device according to claim 1, wherein: the double-contact travel switch is an LX4-32 type limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703426.1U CN210214600U (en) | 2019-05-17 | 2019-05-17 | Ascending limiting alarm device of bridge crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703426.1U CN210214600U (en) | 2019-05-17 | 2019-05-17 | Ascending limiting alarm device of bridge crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210214600U true CN210214600U (en) | 2020-03-31 |
Family
ID=69926340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920703426.1U Expired - Fee Related CN210214600U (en) | 2019-05-17 | 2019-05-17 | Ascending limiting alarm device of bridge crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210214600U (en) |
-
2019
- 2019-05-17 CN CN201920703426.1U patent/CN210214600U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20200331 |