CN208150846U - A kind of electric block over-hoisting protection device - Google Patents
A kind of electric block over-hoisting protection device Download PDFInfo
- Publication number
- CN208150846U CN208150846U CN201820521768.7U CN201820521768U CN208150846U CN 208150846 U CN208150846 U CN 208150846U CN 201820521768 U CN201820521768 U CN 201820521768U CN 208150846 U CN208150846 U CN 208150846U
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- CN
- China
- Prior art keywords
- circuit
- pull switch
- guiding bar
- adjusting chain
- electric block
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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.)
- Expired - Fee Related
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- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses a kind of electric block over-hoisting protection devices; including moving trolley, the wirerope being arranged in moving trolley, rope guide, the electric cabinet for installing control circuit arranged wirerope; guiding bar is connected on the rope guide; adjusting chain is connected in the guiding bar; the end for adjusting chain is connected with pull switch; the pull switch is connected in control circuit, and the guiding bar and adjusting chain suspension are below pull switch.In addition, what is powered off in the utility model is that the slow circuit and liter circuit, other circuits fastly of rising still can work normally, it was found that can press slow drop after problem of rushing to summit, decline suspension hook slowly, decline back pull switch to reset, restore to work normally, after realizing parking triggering, it can fast implement and be again started up, it does not need to repair and adjust, reduce fault handling time, while avoiding the use of logic controller, it reduces costs, improves reliability.
Description
Technical field
The present invention relates to a kind of electric block structures, and in particular to a kind of electric block over-hoisting protection device.
Background technique
The gantry of bridge crane along be laid on two sides it is overhead on track it is longitudinally running, trolley is along being laid on gantry
On track laterally run, constitute a rectangle working range, so that it may make full use of the space handling material below gantry, no
By the obstruction of ground installation.This crane is widely used in indoor and outdoor warehouse, workshop, harbour and outdoor yard etc..Due to
Its scope of application it is relatively wide, use environment is also complex, and security and stability, ease for operation seem especially prominent.
Wherein suspension hook and crossbeam collision are the most common safety problems, and in workshop in lifting, worker is often paying attention to
Power is put on workpiece, to prevent its galled spots, it is ensured that its position is put correctly, then the distance between suspension hook and crossbeam are often neglected
Depending on.In order to solve this collision problem, the prior art provides many methods, such as ultrasonic sensing, laser detection.
With ultrasound examination suspension hook at a distance from crossbeam, when the two narrows down to certain distance, motor parking, due to ultrasonic wave
It is larger to strafe range, this method promptly stops machine safety cover as crossbeam through constant error when lifting on workpiece to lathe
Vehicle.It is also to be detected using laser, because dust, greasy dirt are more in workshop, laser head induction often failure.
Meanwhile these methods require to increase controller, especially for small-scale bridge crane（Lower than 5 tons）, significantly
Increase cost.
Travel switch has the characteristics that contact action, relative to non-contact effect, has inexpensive reliability.Earlier technique
Also have using travel switch anticollision, but mainly put travel switch in the driving circuit, as emergency danger-avoiding means,
Realization is stopped in emergency, once triggering is directly cut off the power, crane can be just again started up after being only adjusted, using more not
Just.
Summary of the invention
After one kind provided by the present invention realizes parking triggering, it can fast implement and be again started up, not need adjustment
Electric block over-hoisting protection device.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of electric block over-hoisting protection device, including moving trolley, the wirerope being arranged in moving trolley, to steel wire
It restricts the rope guide, the electric cabinet for installing control circuit that are arranged, is connected with guiding bar, the guidance on the rope guide
Adjusting chain is connected on bar, the end for adjusting chain is connected with pull switch, and the pull switch is connected on control electricity
In road, the guiding bar and adjusting chain suspension are below pull switch.
In the present invention, the control circuit include it is slow rise circuit, drop slowly circuit, rise fastly circuit, drop fastly circuit, to
Left circuit, to the right circuit, forward circuit and backward circuit, the pull switch are connected on slow liter circuit and fast liter circuit simultaneously
In.
In the present invention, drawstring also can be used in the adjusting chain.
The beneficial effects of the invention are as follows：In use, when suspension hook rising collides rope guide, guiding bar rises,
It adjusts chain to loosen, pull switch, which flicks, automatically powers off control circuit, to stop rising.Because the voltage of control circuit is
36V low pressure, small to human injury, more securely and reliably, and the cutoff retainer on conventional driving circuit is made by 380V high-voltage electricity
, often there is electric spark, safety is not high.In addition, powered off in the present invention be it is slow rise circuit and it is fast rise circuit, other circuits according to
So can work normally, discovery is rushed to summit after problem, can be pressed slow drop, be declined suspension hook slowly, and decline back pull switch resets,
Restore to work normally, after realizing parking triggering, can fast implement and be again started up, not need to repair and adjust, reduce
Fault handling time, while the use of logic controller is avoided, it reduces costs, improves reliability.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing：
Fig. 1 is the structural schematic diagram of the present embodiment；
Fig. 2 is the electric operation control circuit figure of the present embodiment.
Specific embodiment
Referring to Fig.1, a kind of electric block over-hoisting protection device provided by the present embodiment, including moving trolley 1, setting exist
Wirerope 2 in moving trolley 1, rope guide 3, the electric cabinet 4 for installing control circuit that wirerope 2 is arranged, with
Upper structure is the conventional structure of electric block, and this will not be repeated here.Guiding bar 5, the guiding bar 5 are connected on the rope guide 3
On be connected with adjust chain 6, it is described adjust chain 6 length it is adjustable, the adjustings chain 6 also can be used drawstring etc. be flexibly connected
Object replaces, and the end for adjusting chain 6 is connected with pull switch 7, due to 5 direct collision travel switch of guiding bar, is easy top
It is bad.Although loop wheel machine has stopped getting off, cannot start for second, and be unable to the distance between adjusting lift hook and loop wheel machine shell.Cause
This adjust chain 6 both ends connect respectively with guiding bar 5 and pull switch 7, by adjust chain 6 be both avoided that guiding bar 5 and
Pull switch 7 collides, and is adjustable the distance between suspension hook and loop wheel machine shell, kills two birds with one stone.The pull switch 7 is connected
It in control circuit, the guiding bar 5 and adjusts chain 6 and is suspended on 7 lower section of pull switch, when guiding bar 5 moves up, adjust
When the gravity of chain 6 reduces, pull switch 7 starts.
As preferred embodiment, the control circuit rises circuit, slowly drop circuit, fastly liter circuit, fastly drop electricity including slow
Road, to the left circuit, to the right circuit, forward circuit and circuit, the pull switch 7 are connected on slow liter circuit simultaneously and rise circuit fastly
In.Referring to Fig. 2, as specific embodiment, pull switch 7 is respectively connected to protective relay K1 and interlock relay
Between KM13, protective relay K1 and interlock relay KM11.When suspension hook is moved upwards using fast liter or slow liter function and encountered drawing
When power switch 7, fast liter or the slow control circuit that rises are disconnected, SB1, SB3 failure, fastly drop and slow drop control route interlock relay
KM11, KM13 closure, function can execute.
The above description is only a preferred embodiment of the present invention, as long as realizing the skill of the object of the invention with essentially identical means
Art scheme belongs within protection scope of the present invention.
Claims (3)
1. a kind of electric block over-hoisting protection device, including moving trolley（1）, be arranged in moving trolley（1）On wirerope
（2）, to wirerope（2）The rope guide arranged（3）, electric cabinet for installing control circuit（4）, it is characterised in that：Institute
State rope guide（3）On be connected with guiding bar（5）, the guiding bar（5）On be connected with adjusting chain（6）, the adjusting chain（6）
End be connected with pull switch（7）, the pull switch（7）It is connected in control circuit, the guiding bar（5）With adjusting chain
Item（6）It is suspended on pull switch（7）Lower section.
2. a kind of electric block over-hoisting protection device according to claim 1, it is characterised in that：The control circuit includes
Slow liter circuit, slowly drop circuit, fastly liter circuit, fastly drop circuit, to the left circuit, to the right circuit, forward circuit and backward circuit, it is described
Pull switch（7）The slow circuit that rises is connected on simultaneously to rise in circuit with fast.
3. a kind of electric block over-hoisting protection device according to claim 1, it is characterised in that：The adjusting chain（6）
Drawstring also can be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521768.7U CN208150846U (en) | 2018-04-12 | 2018-04-12 | A kind of electric block over-hoisting protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521768.7U CN208150846U (en) | 2018-04-12 | 2018-04-12 | A kind of electric block over-hoisting protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208150846U true CN208150846U (en) | 2018-11-27 |
Family
ID=64378606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820521768.7U Expired - Fee Related CN208150846U (en) | 2018-04-12 | 2018-04-12 | A kind of electric block over-hoisting protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208150846U (en) |
-
2018
- 2018-04-12 CN CN201820521768.7U patent/CN208150846U/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 |
Granted publication date: 20181127 Termination date: 20190412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |