CN206901648U - Electric travelling crane hoisting mechanism braking ability early warning system - Google Patents

Electric travelling crane hoisting mechanism braking ability early warning system Download PDF

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Publication number
CN206901648U
CN206901648U CN201720844577.XU CN201720844577U CN206901648U CN 206901648 U CN206901648 U CN 206901648U CN 201720844577 U CN201720844577 U CN 201720844577U CN 206901648 U CN206901648 U CN 206901648U
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CN
China
Prior art keywords
proximity switch
electromagnetic relay
early warning
hoisting mechanism
warning system
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Withdrawn - After Issue
Application number
CN201720844577.XU
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Chinese (zh)
Inventor
张根柱
赵忠阔
赵梅东
张兆月
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PowerChina Nuclear Engineering Co Ltd
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PowerChina Group Environmental Engineering Co Ltd
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Priority to CN201720844577.XU priority Critical patent/CN206901648U/en
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Publication of CN206901648U publication Critical patent/CN206901648U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of electric travelling crane hoisting mechanism braking ability early warning system, including signal supervisory instrument and warning circuit, signal supervisory instrument to electrically connect with warning circuit;Signal supervisory instrument includes multiple detection posts on the outer face of lifting drum one, detects the proximity switch for being provided with the roller stand on the outside of post and being matched with detection post;Warning circuit includes the alarm buzzer connected with proximity switch, raising electromagnetic relay is in series between proximity switch and power supply and declines electromagnetic relay, raising electromagnetic relay is connected with the lift control loop of hoist engine control circuit, is declined electromagnetic relay and is connected with the control loop for descending of hoist engine control circuit;When brakes occurs abnormal, spool turns, after detection post reaches the distance of reaction of proximity switch, proximity switch is by alarm buzzer and power on;Operating personnel can overhaul to crane in time according to warning message, avoid the generation of construction accident.

Description

Electric travelling crane hoisting mechanism braking ability early warning system
Technical field
It the utility model is related to electric travelling crane technical field, more particularly to a kind of structure of electric travelling crane hoist engine The warning system of dynamic performance.
Background technology
With the continuous expansion of the infrastructure construction scale such as State Grid, petrochemical industry, steel, traffic, as engineering machinery The effect of the hoisting machinery of main force is also increasingly to highlight.Hoisting machinery is to meet different hoisting operation requirements, in species, knot Security reliability proposition while perfect, improvement is constantly carried out on structure, performance and is optimized especially to hoisting machinery is higher Requirement.
In order to ensure the security reliability of hoisting machinery, although crane is in design in various operating modes, system, mechanism Special configuration prevents that the safety device of maloperation from being protected emphatically, but due to brakes with service life growth, The increasing of frequency of use, the wearing of each parts, fatigue and maintenance inspection the adjustment braking ability caused by factor such as not in time Decline, in addition there are potential faults and do not find early in brakes, hoist engine cylinder mounting location for operating personnel again It is blind area, hoister in large tonnage suspension hook or luffing assembly pulley wirerope-winding multiplying power are larger, and slip is not easy to discover initial stage, when Have what hoisting winding suspension hook (or crawler crane armed lever) and weight in the case of without any manipulation together slid and caused the accident Situation.
The installation site of winding machine of hoisting machinery is not in the visual line of sight of operating personnel, even if being provided with monitoring device Crane, operating personnel also simply observe row's rope situation of reel, will not notice that the change that the braking ability of hoist engine occurs.
It is the compression by tripping spring in the braking of non-operating state because the braking model of hoisting machinery is mostly normally closed type Reaction force presss from both sides brake(-holder) block on the brake wheel.After one period, such as spring force decline, braking pad wear is exceeded, inspection Look into adjustment not in time, it is possible to cause braking moment to decline, the mutual frictional force between brake(-holder) block and brake disc (wheel) weakens, Relative slip occurs, with the release of tripping spring torque, can be stopped operating at the 1/4 or 1/2 of slip reel girth, this It is exactly the tendency that braking ability declines.As overhauled or adjusting not in time, the constraint that reel departs from brake(-holder) block can be developed into, in weight In the presence of, quick autorotation, runaway condition is formed, exceed the speed limit and glide such as under the influence of acceleration of gravity, the lighter damages electricity Motivation or hydraulic motor, severe one can cause complete machine breaking-up or human casualty accident.
Again because the wirerope-winding multiplying power of large scale hoisting machinery is larger, such as occur slightly voluntarily to slide, raising is arrived in reflection Or the change of luffing assembly pulley is little, it is not easy to discover, it is also just late when feeling abnormal, form free off the hook, nothing Remedial measure.
Utility model content
Technical problem to be solved in the utility model, which is to provide one kind, can detect crane hoisting mechanism braking in real time The electric travelling crane hoisting mechanism braking ability early warning system of failure.
In order to solve the above technical problems, the technical solution of the utility model is:Electric travelling crane hoisting mechanism braking Energy early warning system, including the signal supervisory instrument being installed on hoist engine and the warning circuit being connected with hoist engine control circuit, The signal supervisory instrument electrically connects with the warning circuit;
The signal supervisory instrument includes multiple detection posts on the outer face of lifting drum one, the detection post It is circumferentially distributed on the outer face of the reel, is provided with the roller stand on the outside of the detection post and is matched with the detection post Proximity switch;
The warning circuit includes the alarm buzzer connected with the proximity switch, between the proximity switch and power supply It is in series with raising electromagnetic relay and declines electromagnetic relay, the raising electromagnetic relay and the hoist engine control circuit Lift control loop is connected, and the decline electromagnetic relay is connected with the control loop for descending of the hoist engine control circuit.
As a kind of perferred technical scheme, the detection post is uniformly circumferentially distributed on the outer face of the reel, All detection posts are equal with the vertical range at the spool turns center, and in the detection post and the spool turns The vertical range of the heart and the proximity switch are equal with the vertical range at the spool turns center, the proximity switch with it is described Detect the distance of reaction that the minimum range between post is less than the proximity switch.
As a kind of perferred technical scheme, the lift control loop includes handle controller, the handle controller Raising ac contactor coil is in series with, the raising ac contactor coil electrically connects with three-phase alternating current.
As a kind of perferred technical scheme, the control loop for descending includes handle controller, the handle controller Decline ac contactor coil is in series with, the decline ac contactor coil electrically connects with three-phase alternating current.
As a kind of perferred technical scheme, the raising electromagnetic relay and the decline electromagnetic relay are normally closed Type relay.
As a kind of perferred technical scheme, the proximity switch is open type proximity switch.
By adopting the above-described technical solution, electric travelling crane hoisting mechanism braking ability early warning system, including installation In the signal supervisory instrument on hoist engine and the warning circuit being connected with hoist engine control circuit, the signal supervisory instrument and institute State warning circuit electrical connection;The signal supervisory instrument includes multiple detection posts on the outer face of lifting drum one, It is described detection post be circumferentially distributed on the outer face of the reel, it is described detection post on the outside of roller stand on be provided with it is described Detect the proximity switch of post matching;The warning circuit includes the alarm buzzer connected with the proximity switch, described close Raising electromagnetic relay is in series between switch and power supply and declines electromagnetic relay, the raising electromagnetic relay and the volume The lift control loop connection of machine control circuit is raised, it is described to decline electromagnetic relay and the decline control of the hoist engine control circuit Loop connection processed;When brakes occurs abnormal, spool turns, after detection post reaches the distance of reaction of proximity switch, approach Switch alarm buzzer and power on, alarmed;Operating personnel can enter to crane in time according to warning message Row maintenance, avoids the generation of construction accident.
Brief description of the drawings
The following drawings is only intended to, in doing the utility model schematic illustration and explanation, not limit model of the present utility model Enclose.Wherein:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the utility model embodiment circuit diagram;
In figure:11- reels;12- roller stands;21- detects post;22- proximity switches;31- alarm buzzers;32- raisings Electromagnetic relay;33- declines electromagnetic relay;41- handle controllers;42- raising ac contactor coils;43- declines exchange Contactor coil.
Embodiment
With reference to the accompanying drawings and examples, the utility model is expanded on further.In the following detailed description, only pass through Bright mode describes some one exemplary embodiments of the present utility model.Undoubtedly, one of ordinary skill in the art can be with Recognize, can be with a variety of modes to described in the case of without departing from spirit and scope of the present utility model Embodiment is modified.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting the protection of claim Scope.
As depicted in figs. 1 and 2, electric travelling crane hoisting mechanism braking ability early warning system, including it is installed on hoist engine On signal supervisory instrument and the warning circuit that is connected with hoist engine control circuit, the signal supervisory instrument and the alarm electricity Road electrically connects;
The signal supervisory instrument includes multiple detection posts 21 on the outer face of lifting drum 11 1, the inspection Survey post 21 to be circumferentially distributed on the outer face of the reel 11, be provided with the roller stand 12 in detection post 21 outside and institute State the proximity switch 22 that detection post 21 matches;The detection post 21 is uniformly circumferentially distributed on the outer face of the reel 11, All detection posts 21 are equal with the vertical range of the center of rotation of reel 11, and the detection post 21 and the reel The vertical range of 11 centers of rotation and the proximity switch 22 are equal with the vertical range of the center of rotation of reel 11, described to connect Minimum range between nearly switch 22 and the detection post 21 is less than the distance of reaction of the proximity switch 22.
The warning circuit includes the alarm buzzer 31 connected with the proximity switch 22, the proximity switch 22 and electricity Raising electromagnetic relay 32 is in series between source and declines electromagnetic relay 33, the raising electromagnetic relay 32 and the decline Electromagnetic relay 33 is closed type relay, and the proximity switch 22 is open type proximity switch 22, the raising electromagnetism after Electrical equipment 32 is connected with the lift control loop of the hoist engine control circuit, the decline electromagnetic relay 33 and the hoist engine The control loop for descending connection of control circuit.The lift control loop includes handle controller 41, the handle controller 41 Raising ac contactor coil 42 is in series with, the raising ac contactor coil 42 electrically connects with three-phase alternating current.The decline Control loop includes handle controller 41, and the handle controller 41, which is in series with, declines ac contactor coil 43, the decline Ac contactor coil 43 electrically connects with three-phase alternating current.
One proximity switch 22 is installed on the roller stand 12 of hoist engine, number is uniformly installed on the lateral perimeter of reel 11 Individual detection post 21, in a non-operating condition, when reel 11 occurs voluntarily to rotate, any one detection post 21 appears in close open When closing in 22 detection range, it can sense and send pre-warning signal.
One machinery can install the precaution device of equivalent amount according to the quantity of hoist engine, detect the work of each hoist engine respectively Make state.Operation principle is as follows:
1st, hoist engine inactive state:Because elevator brake mechanism is normally closed type, lifting drum 11 in the case of not operation It is also at inactive state.Such as braking ability decline, reel 11 free rotary can occur under the traction of weight, when installed in reel Detection post 21 on 11 rotates with reel 11 to be appeared in the detecting distance of proximity switch 22, the induction coil in proximity switch 22 Can be normally closed by normally opened contact adhesive, alarm buzzer 31 can ring after conducting.(frequency of ring is by the free rotary of reel 11 Speed and the density installed in same circumference of detection post 21 determine)
2nd, hoist engine raising state:When pulling handle controller 41 to raising position, raising ac contactor coil adhesive, Motor drives the rotation of the raising of lifting drum 11, now the coil adhesive action of raising electromagnetic relay 32, by normally-closed contact It is changed into open in usual, cuts off early warning system power supply, the dead electricity of proximity switch 22, elevator machine cylinder, which rotates, will not trigger siren.
3rd, hoist engine declines state:When pulling handle controller 41 to down position, decline ac contactor coil adhesive, Motor drives lifting drum 11 to decline rotation, now declines the coil adhesive action of electromagnetic relay 33, by normally-closed contact It is changed into open in usual, cuts off early warning system power supply, the dead electricity of proximity switch 22, elevator machine cylinder, which rotates, will not trigger siren.
Decline initial stage in braking ability, reel 11 can produce slight relative proper motion rotation under not operation load condition, such as Adjustment in time at this moment or maintenance arrestment mechanism, then can avoid producing follow-up major accident.
The utility model can be applied to the arrestment mechanism peace of the electric hoisting machine such as large-scale bridge-type, gate-type, tower, harbour Full performance monitoring and early warning.
After installing electric travelling crane hoisting mechanism braking ability early warning system described in the utility model, detection at any time is rolled up 11 inactive state in the case of not operation of cylinder, when occurring slightly from line slip, i.e., danger early warning signal can be sent automatically, is carried Awake operating personnel stop operation, and are overhauled or adjusted arrestment mechanism immediately;Solves above mentioned problem well.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model Claimed scope is by appended claims and its equivalent thereof.

Claims (6)

1. electric travelling crane hoisting mechanism braking ability early warning system, it is characterised in that:Including the letter being installed on hoist engine Number detection means and the warning circuit being connected with hoist engine control circuit, the signal supervisory instrument are electrically connected with the warning circuit Connect;
The signal supervisory instrument includes multiple detection posts on the outer face of lifting drum one, and the detection post is circumferential It is distributed on the outer face of the reel, is provided with the roller stand on the outside of the detection post and is connect with what the detection post matched Nearly switch;
The warning circuit includes the alarm buzzer connected with the proximity switch, is connected between the proximity switch and power supply There is raising electromagnetic relay and decline electromagnetic relay, the raising electromagnetic relay and the raising of the hoist engine control circuit Control loop is connected, and the decline electromagnetic relay is connected with the control loop for descending of the hoist engine control circuit.
2. electric travelling crane hoisting mechanism braking ability early warning system as claimed in claim 1, it is characterised in that:The inspection Survey post to be uniformly circumferentially distributed on the outer face of the reel, all detection posts are vertical with the spool turns center Apart from equal, and the detection post turns with the vertical range at the spool turns center and the proximity switch with the reel The vertical range at dynamic center is equal, and the minimum range between the proximity switch and the detection post is less than the proximity switch Distance of reaction.
3. electric travelling crane hoisting mechanism braking ability early warning system as claimed in claim 1, it is characterised in that:Described Rising control loop includes handle controller, and the handle controller is in series with raising ac contactor coil, the raising exchange Contactor coil electrically connects with three-phase alternating current.
4. electric travelling crane hoisting mechanism braking ability early warning system as claimed in claim 1, it is characterised in that:Under described Drop control loop includes handle controller, and the handle controller is in series with decline ac contactor coil, described to decline exchange Contactor coil electrically connects with three-phase alternating current.
5. electric travelling crane hoisting mechanism braking ability early warning system as claimed in claim 1, it is characterised in that:Described It is closed type relay to rise electromagnetic relay and the decline electromagnetic relay.
6. electric travelling crane hoisting mechanism braking ability early warning system as claimed in claim 1, it is characterised in that:It is described to connect Nearly switch is open type proximity switch.
CN201720844577.XU 2017-07-12 2017-07-12 Electric travelling crane hoisting mechanism braking ability early warning system Withdrawn - After Issue CN206901648U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720844577.XU CN206901648U (en) 2017-07-12 2017-07-12 Electric travelling crane hoisting mechanism braking ability early warning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720844577.XU CN206901648U (en) 2017-07-12 2017-07-12 Electric travelling crane hoisting mechanism braking ability early warning system

Publications (1)

Publication Number Publication Date
CN206901648U true CN206901648U (en) 2018-01-19

Family

ID=61312625

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Application Number Title Priority Date Filing Date
CN201720844577.XU Withdrawn - After Issue CN206901648U (en) 2017-07-12 2017-07-12 Electric travelling crane hoisting mechanism braking ability early warning system

Country Status (1)

Country Link
CN (1) CN206901648U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107265326A (en) * 2017-07-12 2017-10-20 中国电建集团核电工程公司 Electric travelling crane hoisting mechanism braking ability early warning system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107265326A (en) * 2017-07-12 2017-10-20 中国电建集团核电工程公司 Electric travelling crane hoisting mechanism braking ability early warning system
CN107265326B (en) * 2017-07-12 2023-01-03 中国电建集团核电工程公司 Braking performance early warning system for hoisting mechanism of electric crane

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CP01 Change in the name or title of a patent holder

Address after: 250102 Hanyu Jingu A3-3 Building, Jinan High-tech Zone, Shandong Province

Patentee after: POWERCHINA NUCLEAR ENGINEERING Co.,Ltd.

Address before: 250102 Hanyu Jingu A3-3 Building, Jinan High-tech Zone, Shandong Province

Patentee before: POWERCHINA NUCLEAR ENGINEERING Co.

CP01 Change in the name or title of a patent holder
AV01 Patent right actively abandoned

Granted publication date: 20180119

Effective date of abandoning: 20230103

AV01 Patent right actively abandoned

Granted publication date: 20180119

Effective date of abandoning: 20230103

AV01 Patent right actively abandoned
AV01 Patent right actively abandoned