CN208516808U - A kind of crane emergency failure safe protection circuit - Google Patents
A kind of crane emergency failure safe protection circuit Download PDFInfo
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- CN208516808U CN208516808U CN201821020611.2U CN201821020611U CN208516808U CN 208516808 U CN208516808 U CN 208516808U CN 201821020611 U CN201821020611 U CN 201821020611U CN 208516808 U CN208516808 U CN 208516808U
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Abstract
The utility model relates to crane safety band-type brake technical fields, and in particular to a kind of crane emergency failure safe protection circuit.The protection circuit includes the deadman's brake control module of the normal open switch equipped with band-type brake relay；Module is started switch equipped with starting relay；The working state control module being made of raising branch in parallel and decline branch；By time-delay relay and the delay switch trigger module that is made of the second normal open switch of raising relay and the second normal open switch of down relay switch triggering block coupled in series in parallel；The delay band-type brake module being composed in series with self-lock switch, the normal open switch of time-delay relay and band-type brake relay；In the delay switch trigger module and starts switch and be in series with total contactor in module and start switch.The utility model is in the case where total contactor accident power-off, if the brake time of deadman's brake is just delayed by equipment at work, to realize mitigation because of mechanical shock caused by the direct band-type brake of deadman's brake.
Description
Technical field
The utility model relates to crane safety band-type brake technical fields, and in particular to a kind of crane emergency failure safe guarantor
Protection circuit.
Background technique
With the development of economic technology, the enlarging for making steel ironmaking company increases, and derives large quantities of metallurgical casting class liftings
Some proposed standards have been done to these special equipments by machine, country, and the equipment of special construction needs to roll up in raising due to safety concerns
Increase deadman's brake on cylinder, prevents ladle under fault condition from falling to cause major accident.But each crane manufacture
Manufacturer is different to the control mode opinion of deadman's brake, to derive various control modes, most of manufacturer is all direct
Opening a sluice gate for deadman's brake is directly controlled using overspeed switch, the power supply of deadman's brake draws behind total contactor to be taken, such
If scheme crane is in normal course of operation, because the total contactor of other various factors disconnects, the direct band-type brake of deadman's brake,
It will cause very big mechanical shock in this way, reduce the service life of crane.What is mainly told about herein is a kind of deadman's brake
New-type control technology scheme, band-type brake immediately when failure, when normal work, which lags behind, supports brake to reach mitigation machine
The effect of tool impact.
Utility model content
The purpose of this utility model is to provide a kind of crane emergency failure safes to protect circuit, unexpected in total contactor
In the case where power-off, if the brake time of deadman's brake is just delayed by equipment at work, to realize mitigation because of peace
Mechanical shock caused by the direct band-type brake of full application of brake device.
In order to reach above-mentioned technical purpose, technical solution used by the utility model is as follows:
A kind of crane emergency failure safe protects circuit, which is characterized in that the protection circuit includes
The deadman's brake control module of normal open switch equipped with band-type brake relay；
Module is started switch equipped with starting relay；
The working state control module being made of raising branch in parallel and decline branch, the raising branch include successively
Concatenated raising switch, the normally closed switch of down relay and raising relay, the decline branch includes being sequentially connected in series down
The normally closed switch and down relay of drop switch, raising relay；
By time-delay relay with by raising relay the second normal open switch and down relay the second normal open switch simultaneously
The delay switch trigger module of the switch triggering block coupled in series composition of connection；With
The self-lock switch that is made of the Self-resetting normal open switch of starting relay and the second normal open switch of band-type brake relay,
The delay band-type brake module that the normal open switch and band-type brake relay of time-delay relay are composed in series；
In the delay switch trigger module and starts switch and be in series with total contactor in module and start switch.
It further, further include short delay switch trigger module in the protection circuit, the short delay switch trigger module
Including being composed in series by the third normal open switch of short time-delay relay, raising relay, the third normal open switch of down relay
Short delay switch trigger module；
The short time-delay relay normal open switch in parallel with the normal open switch of the time-delay relay.
Further, the delay switch trigger module, start switch and be in series in module and short delay switch trigger module
Total contactor starts switch.
Further, overspeed switch is also in series in the delay band-type brake module.
The invention has the following beneficial effects:
Safety protective circuit disclosed in the utility model can make to make safely in the case where total contactor surprisingly disconnects
Dynamic device then controls deadman's brake delay band-type brake when detecting that equipment is carrying out in raising or the course of work of decline,
It effectively avoids that brake is supported to close the lock time, waits and support brake closes after lock to control deadman's brake again and carry out closing lock, into
And mitigating mechanical shock, the service life of prolonged mechanical reduces the probability of happening of safety accident.
Detailed description of the invention
Fig. 1 is the electrical schematic diagram of the utility model.
In figure: 1- deadman's brake control module, 2- start switch module, 3- working state control module, 3-1- raising
Branch, 3-2- decline branch, 4- delay switch trigger module, 5- delay band-type brake module, the short delay switch trigger module of 6-.
Specific embodiment
The utility model is described in detail below by specific embodiment combination attached drawing, it should be noted that do not conflicting
In the case where, the feature in embodiment and embodiment in the present invention can be combined with each other, and the protection scope of the utility model is simultaneously
It is without being limited thereto.
As shown in Figure 1, a kind of crane emergency failure safe protects circuit, which includes being equipped with band-type brake relay
The deadman's brake control module 1 of the normal open switch K03 ' of K03；Module 2 is started switch equipped with starting relay T30；By simultaneously
The raising branch 3-1 of connection and the working state control module 3 of decline branch 3-2 composition, the raising branch 3-1 includes successively going here and there
The raising switch K1 of connection, the normally closed switch K02 ' of down relay K02 and raising relay K01, the decline branch 3-2 include
The normally closed switch K01 ' and down relay K02 of the down switch K2, raising relay K01 that are sequentially connected in series；
It is opened by time-delay relay T37 with by the normal open switch K01 " and the normally opened of down relay K02 of raising relay K01
Close the delay switch trigger module 4 of the switch triggering block coupled in series composition of K02 " parallel connection；With the Self-resetting by starting relay T30
Self-lock switch that the second normal open switch K03 " of normal open switch T30 ' and band-type brake relay K03 are formed, time-delay relay T37 it is normal
The delay band-type brake module 5 that switch T37 ' and band-type brake relay K03 are composed in series.
It preferably, further include short delay switch trigger module 6 in the protection circuit, the short delay switch trigger module
6 include by the third normal open switch K01 of short time-delay relay T32, raising relay K01#, the third of down relay K02 it is normal
Switch K02#The short delay switch trigger module 6 being composed in series；Simultaneously with the normal open switch T37 ' with the time-delay relay T37
The normal open switch T32 ' of the short time-delay relay T32 of connection.
Preferably, it the delay switch trigger module 4 and starts switch and is in series with total contactor in module 2 and starts switch
K0。
Preferably, it is delayed in band-type brake module 5 and is also in series with the overspeed switch F40.
Further, the delay switch trigger module 4, start switch and connect in module 2 and short delay switch trigger module 6
There is total contactor to start switch.
When work, when disconnecting because of the total contactor of other fortuitous events, 2 kinds of situations of this time-division: the first, raising is working,
That is raising is in rising or decline, and reel is rotating at this time, if deadman's brake directly works at this time, mechanical shock
Can be very big, so being provided with a power cut off delay time T37, i.e., delay 3s, deadman's brake band-type brake again are effectively avoided supporting
Brake closes the lock time, waits after supporting brake to close, safety arrestment is closed again, alleviates the impact to mechanical equipment in this way.
Namely when working condition is raising or decline, if total contactor accident power-off, the band-type brake module 5 that is delayed power-off, delay after
Electric appliance T37 power loss then disconnects after the normal open switch T37 ' delay 3s of time-delay relay T37, namely delay band-type brake module 5 powers off,
Band-type brake relay K03 power loss at this time, so as to cause the normal open switch K03 ' disconnection of band-type brake relay K03, deadman's brake closes lock.
The second, when raising does not decline yet, reel is not being acted at this time, if total contactor accident power-off, short time-delay relay T32
Power loss then disconnects after the normal open switch T32 ' delay 0.2s of short time-delay relay T32, then band-type brake relay K03 power loss, thus
Lead to the normal open switch K03 ' disconnection of band-type brake relay K03, deadman's brake closes lock.
When there is emergency condition generation, such as overspeed switch F40 is disconnected, and deadman's brake relay directly powers off, safety
The direct band-type brake of brake.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (4)
1. a kind of crane emergency failure safe protects circuit, which is characterized in that the protection circuit includes
The deadman's brake control module of normal open switch equipped with band-type brake relay；
Module is started switch equipped with starting relay；
The working state control module being made of raising branch in parallel and decline branch, the raising branch include being sequentially connected in series
Raising switch, the normally closed switch of down relay and raising relay, the decline branch includes that the decline being sequentially connected in series is opened
It closes, the normally closed switch and down relay of raising relay；
It is in parallel with by the second normal open switch of raising relay and the second normal open switch of down relay by time-delay relay
The delay switch trigger module of switch triggering block coupled in series composition；With
The self-lock switch that is made of the Self-resetting normal open switch of starting relay and the second normal open switch of band-type brake relay, delay
The delay band-type brake module that the normal open switch and band-type brake relay of relay are composed in series；
In the delay switch trigger module and starts switch and be in series with total contactor in module and start switch.
2. a kind of crane emergency failure safe according to claim 1 protects circuit, which is characterized in that the protection electricity
Further include short delay switch trigger module in road, the short delay switch trigger module include by short time-delay relay, raising after
The short delay switch trigger module that the third normal open switch of electric appliance, the third normal open switch of down relay are composed in series；
The short time-delay relay normal open switch in parallel with the normal open switch of the time-delay relay.
3. a kind of crane emergency failure safe according to claim 1 protects circuit, which is characterized in that the delay is opened
Trigger module is closed, is started switch and is in series with total contactor in module and short delay switch trigger module and starts switch.
4. a kind of crane emergency failure safe according to claim 1 protects circuit, which is characterized in that the delay is embraced
Overspeed switch is also in series in lock module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821020611.2U CN208516808U (en) | 2018-06-29 | 2018-06-29 | A kind of crane emergency failure safe protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821020611.2U CN208516808U (en) | 2018-06-29 | 2018-06-29 | A kind of crane emergency failure safe protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208516808U true CN208516808U (en) | 2019-02-19 |
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ID=65338118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821020611.2U Active CN208516808U (en) | 2018-06-29 | 2018-06-29 | A kind of crane emergency failure safe protection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN208516808U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111392605A (en) * | 2020-03-06 | 2020-07-10 | 杭州国电大力机电工程有限公司 | Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
| DE102020124135A1 (en) | 2020-09-16 | 2022-03-17 | Emg Automation Gmbh | Method and device for controlling a braking process in a drive train |
-
2018
- 2018-06-29 CN CN201821020611.2U patent/CN208516808U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111392605A (en) * | 2020-03-06 | 2020-07-10 | 杭州国电大力机电工程有限公司 | Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
| CN111392605B (en) * | 2020-03-06 | 2021-09-28 | 杭州国电大力机电工程有限公司 | Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
| DE102020124135A1 (en) | 2020-09-16 | 2022-03-17 | Emg Automation Gmbh | Method and device for controlling a braking process in a drive train |
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