CN107215798A - Hydraulic hoisting crane hoisting mechanism braking ability early warning system - Google Patents
Hydraulic hoisting crane hoisting mechanism braking ability early warning system Download PDFInfo
- Publication number
- CN107215798A CN107215798A CN201710565003.3A CN201710565003A CN107215798A CN 107215798 A CN107215798 A CN 107215798A CN 201710565003 A CN201710565003 A CN 201710565003A CN 107215798 A CN107215798 A CN 107215798A
- Authority
- CN
- China
- Prior art keywords
- oil circuit
- proximity switch
- switch
- raising
- early warning
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a kind of hydraulic hoisting crane hoisting mechanism braking ability early warning system, including signal supervisory instrument and warning circuit, signal supervisory instrument is electrically connected with warning circuit；Signal supervisory instrument includes being provided with the proximity switch matched with detection post on the roller stand on the outside of multiple detection posts on the outer face of lifting drum one, detection post；Warning circuit includes the alarm buzzer connected with proximity switch, raising pressure switch and falling pressure relay are in series between proximity switch and power supply, raising pressure switch controls the lift control oil circuit of oil circuit to be connected with hoist engine, and falling pressure relay controls the decline control oil circuit of oil circuit to be connected with hoist engine；When brakes occurs abnormal, spool turns, detection post is reached after the distance of reaction of proximity switch, and proximity switch is alarmed alarm buzzer and power on；Operating personnel can overhaul to crane in time according to warning message, it is to avoid the generation of construction accident.
Description
Technical field
The present invention relates to electric travelling crane technical field, more particularly to a kind of hydraulic hoisting crane hoisting mechanism braking
The warning system of energy.
Background technology
With the continuous expansion of the infrastructure construction scale such as State Grid, petrochemical industry, steel, traffic, engineering machinery is used as
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 and tearing of each parts, fatigue and maintenance inspection the adjustment braking ability that factor is caused not in time etc.
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 difficult 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 generally normally closed type
Reaction force presss from both sides brake(-holder) block on the brake wheel.After one period, such as spring force declines, and 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,
Occur relative slip, 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 forms runaway condition, exceeds the speed limit and glides such as under the influence of acceleration of gravity, the lighter's damage electricity
Motivation or hydraulic motor, severe one can cause complete machine to damage 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 difficult to discover, it is also just late when feeling abnormal, form free off the hook, nothing
Remedial measure.
The content of the invention
The technical problems to be solved by the invention, which are to provide one kind, can detect crane hoisting mechanism brake fault in real time
Hydraulic hoisting crane hoisting mechanism braking ability early warning system.
In order to solve the above technical problems, the technical scheme is that：Hydraulic hoisting crane hoisting mechanism braking ability is pre-
Alert system, including the signal supervisory instrument being installed on hoist engine and the warning circuit for controlling oil circuit to be connected with hoist engine, it is described
Signal supervisory instrument is electrically connected with the warning circuit；
The signal supervisory instrument includes multiple detection posts on the outer face of lifting drum one, the detection post
On the outer face for being circumferentially distributed in the reel, it is provided with and is matched with the detection post on the roller stand on the outside of the detection post
Proximity switch；
The warning circuit includes the alarm buzzer connected with the proximity switch, between the proximity switch and power supply
Raising pressure switch and falling pressure relay are in series with, the raising pressure switch controls oil circuit with the hoist engine
Lift control oil circuit is connected, and the falling pressure relay controls the decline control oil circuit of oil circuit to be connected with the hoist engine.
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 that the minimum range between post is less than the distance of reaction of the proximity switch.
As a kind of perferred technical scheme, the lift control oil circuit includes hand-operated direction valve and pilot operated directional control valve, institute
State and raising oil circuit, described are connected between an output port of hand-operated direction valve and the pilot operated directional control valve lift control end
Pressure switch is risen to be connected with the raising oil circuit.
As a kind of perferred technical scheme, the control oil circuit that declines includes hand-operated direction valve and pilot operated directional control valve, institute
State and be connected with decline oil circuit between another output port of hand-operated direction valve and pilot operated directional control valve decline control end, it is described
Falling pressure relay is connected with the decline oil circuit.
As a kind of perferred technical scheme, the raising pressure switch and the falling pressure 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, hydraulic hoisting crane hoisting mechanism braking ability early warning system, including install
The warning circuit that oil circuit is connected, the signal supervisory instrument and institute are controlled in the signal supervisory instrument on hoist engine and with hoist engine
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 pressure switch and falling pressure relay, the raising pressure switch and the volume are in series between switch and power supply
The lift control oil circuit connection of machine control oil circuit is raised, the falling pressure relay controls the decline control of oil circuit with the hoist engine
Liquefaction road is connected；When brakes occurs abnormal, spool turns, detection post is reached after the distance of reaction of proximity switch, is approached
Switch is alarmed alarm buzzer and power on；Operating personnel can enter to crane in time according to warning message
Row maintenance, it is to avoid the generation of construction accident.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is hydraulic pressure of the embodiment of the present invention and circuit diagram；
In figure：11- reels；12- roller stands；21- detects post；22- proximity switches；31- alarm buzzers；32- raisings
Pressure switch；33- falling pressure relays；41- hand-operated direction valves；42- pilot operated directional control valves；43- raising oil circuits；44- declines
Oil circuit.
Embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.In the following detailed description, only explanation is passed through
Mode describes some one exemplary embodiments of the present invention.Undoubtedly, one of ordinary skill in the art will recognize,
In the case of without departing from the spirit and scope of the present invention, described embodiment can be repaiied with a variety of modes
Just.Therefore, accompanying drawing and description are inherently illustrative, are not intended to limit the scope of the claims.
As depicted in figs. 1 and 2, hydraulic hoisting crane hoisting mechanism braking ability early warning system, including be installed on hoist engine
On signal supervisory instrument and control the warning circuit that be connected of oil circuit with hoist engine, the signal supervisory instrument and the alarm are electric
Road is electrically connected；
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 and institute on the roller stand 12 in the outside of detection post 21
State the proximity switch 22 that detection post 21 is matched；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 pressure switch 32 and falling pressure relay 33, the raising pressure switch 32 and the decline are in series between source
Pressure switch 33 is closed type relay, the proximity switch 22 be open type proximity switch 22, the raising pressure after
Electrical equipment 32 controls the lift control oil circuit of oil circuit to be connected with the hoist engine, the falling pressure relay 33 and the hoist engine
Control the decline control oil circuit connection of oil circuit.The lift control oil circuit includes hand-operated direction valve 41 and pilot operated directional control valve 42, institute
State and be connected with raising oil circuit 43 between an output port of hand-operated direction valve 41 and the lift control end of the pilot operated directional control valve 42,
The raising pressure switch is connected with the raising oil circuit 43.The control oil circuit that declines includes hand-operated direction valve 41 and hydraulic control
Reversal valve 42, another output port and the pilot operated directional control valve 42 of the hand-operated direction valve 41 are connected between declining control end
There is decline oil circuit 44, the falling pressure relay is connected with the decline oil circuit 44.
One proximity switch 22 is installed on the roller stand 12 of hoist engine, it is uniform on the lateral perimeter of reel 11 that number is installed
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, and the work of each hoist engine is detected 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 is rotated with reel 11 and appeared in the detecting distance of proximity switch, and the induction coil in proximity switch can be by
Normally opened contact adhesive is normally closed, and alarm buzzer can ring after conducting.(frequency of ring is by the speed of the free rotary of reel 11
And detect the density decision that post 21 is installed in same circumference)
2nd, hoist engine raising state：When pulling hand-operated direction valve 41 to raising position, control oil P ' passes through manual reverse of direction
Valve 41 promotes pilot operated directional control valve 42 to move to right, and hydraulic motor drives the rotation of the raising of lifting drum 11, now raising pressure switch
32 in the presence of oil pressure, and normally closed type contact is pushed open, is changed into open in usual, cuts off early warning system power supply, proximity switch dead electricity, volume
Siren will not be triggered by raising machine cylinder rotation.
3rd, hoist engine declines state：When pulling hand-operated direction valve 41 to down position, control oil P ' passes through manual reverse of direction
Valve 41 promotes pilot operated directional control valve 42 to move to left, and hydraulic motor drives lifting drum 11 to decline rotation, now falling pressure relay
33 in the presence of oil pressure, and normally closed type contact is pushed open, is changed into open in usual, cuts off early warning system power supply, proximity switch dead electricity, volume
Siren will not be triggered by raising machine cylinder rotation.
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.
Present invention can apply to the arrestment mechanism security of the Hydraulic for lifting load such as large-scale bridge-type, gate-type, tower, harbour machinery
Can monitoring and early warning.
Install after hydraulic hoisting crane hoisting mechanism braking ability early warning system of the present invention, reel 11 is detected at any time
Inactive state in the case of not operation, when occurring slightly from line slip, i.e., can send danger early warning signal automatically, remind behaviour
Stopped operation as personnel, overhauled or adjusted arrestment mechanism immediately；Above mentioned problem is solved well.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. hydraulic hoisting 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 that oil circuit is connected is controlled with hoist engine, the signal supervisory instrument is 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
On the outer face for being distributed in the reel, it is provided with the roller stand on the outside of the detection post and connecing that the detection post is 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 are raising pressure switch and falling pressure relay, the raising pressure switch controls the raising of oil circuit with the hoist engine
Oil circuit connection is controlled, the falling pressure relay controls the decline control oil circuit of oil circuit to be connected with the hoist engine.
2. hydraulic hoisting 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 and the vertical range and the proximity switch at the spool turns center turn 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. hydraulic hoisting crane hoisting mechanism braking ability early warning system as claimed in claim 1, it is characterised in that：Described
Rising control oil circuit includes hand-operated direction valve and pilot operated directional control valve, and an output port and the hydraulic control of the hand-operated direction valve are changed
To raising oil circuit is connected between valve lift control end, the raising pressure switch is connected with the raising oil circuit.
4. hydraulic hoisting crane hoisting mechanism braking ability early warning system as claimed in claim 1, it is characterised in that：Under described
Drop control oil circuit includes hand-operated direction valve and pilot operated directional control valve, another output port and the hydraulic control of the hand-operated direction valve
Reversal valve is connected with decline oil circuit between declining control end, and the falling pressure relay is connected with the decline oil circuit.
5. hydraulic hoisting 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 pressure switch and the falling pressure relay.
6. hydraulic hoisting 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565003.3A CN107215798B (en) | 2017-07-12 | 2017-07-12 | Brake performance early warning system of hydraulic crane hoisting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565003.3A CN107215798B (en) | 2017-07-12 | 2017-07-12 | Brake performance early warning system of hydraulic crane hoisting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107215798A true CN107215798A (en) | 2017-09-29 |
| CN107215798B CN107215798B (en) | 2022-10-14 |
Family
ID=59952150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710565003.3A Active CN107215798B (en) | 2017-07-12 | 2017-07-12 | Brake performance early warning system of hydraulic crane hoisting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107215798B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868599A (en) * | 2018-08-09 | 2018-11-23 | 冀凯河北机电科技有限公司 | A kind of complete pneumatic comprehensive drill carriage |
| CN108975192A (en) * | 2018-09-28 | 2018-12-11 | 中国人民解放军火箭军工程大学 | A kind of double-brake electric hoist failure emergency load safe release system and method |
| CN112433517A (en) * | 2019-08-26 | 2021-03-02 | 宝山钢铁股份有限公司 | Fault diagnosis and alarm method for rail wheel brake system of port machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717054A (en) * | 2009-12-18 | 2010-06-02 | 中铁大桥局集团第二工程有限公司 | Linking safety device of large-tonnage climbing crane and working method thereof |
| CN201962012U (en) * | 2010-09-30 | 2011-09-07 | 佛山宝钢不锈钢加工配送有限公司 | Limit alarm device for travelling vehicles |
| CN105398987A (en) * | 2015-11-19 | 2016-03-16 | 刘德忠 | Hoisting machinery winding drum steel wire traction device |
| CN206901647U (en) * | 2017-07-12 | 2018-01-19 | 中国电建集团核电工程公司 | Hydraulic hoisting crane hoisting mechanism braking ability early warning system |
-
2017
- 2017-07-12 CN CN201710565003.3A patent/CN107215798B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717054A (en) * | 2009-12-18 | 2010-06-02 | 中铁大桥局集团第二工程有限公司 | Linking safety device of large-tonnage climbing crane and working method thereof |
| CN201962012U (en) * | 2010-09-30 | 2011-09-07 | 佛山宝钢不锈钢加工配送有限公司 | Limit alarm device for travelling vehicles |
| CN105398987A (en) * | 2015-11-19 | 2016-03-16 | 刘德忠 | Hoisting machinery winding drum steel wire traction device |
| CN206901647U (en) * | 2017-07-12 | 2018-01-19 | 中国电建集团核电工程公司 | Hydraulic hoisting crane hoisting mechanism braking ability early warning system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868599A (en) * | 2018-08-09 | 2018-11-23 | 冀凯河北机电科技有限公司 | A kind of complete pneumatic comprehensive drill carriage |
| CN108975192A (en) * | 2018-09-28 | 2018-12-11 | 中国人民解放军火箭军工程大学 | A kind of double-brake electric hoist failure emergency load safe release system and method |
| CN112433517A (en) * | 2019-08-26 | 2021-03-02 | 宝山钢铁股份有限公司 | Fault diagnosis and alarm method for rail wheel brake system of port machine |
| CN112433517B (en) * | 2019-08-26 | 2022-06-28 | 宝山钢铁股份有限公司 | Fault diagnosis and alarm method for rail wheel brake system of port machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107215798B (en) | 2022-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107215798A (en) | Hydraulic hoisting crane hoisting mechanism braking ability early warning system | |
| CN102826437B (en) | Device for recording and monitoring running of staircase | |
| CN101670987B (en) | Crane safe operation electronic monitoring networking system | |
| CN101143670A (en) | Electrical protection method and device during frequency-changing elevator mechanical brake disabling | |
| CN104444919B (en) | Mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding | |
| CN103950837A (en) | Safety monitoring system for hoisting machine and method | |
| CN110371856A (en) | A kind of electrical duplicate protection system of derrick crane | |
| CN108383008A (en) | Tower crane setting-up control method and system | |
| CN101508402B (en) | Control system and control method of railway breakdown crane | |
| CN103935858A (en) | Automatic detection device of traction machine brake | |
| CN206901647U (en) | Hydraulic hoisting crane hoisting mechanism braking ability early warning system | |
| CN208900466U (en) | A kind of mine hoist hydraulic station online monitoring system | |
| CN209668568U (en) | A kind of building hoist monitoring device of automatic alarm locking | |
| CN206901648U (en) | Electric travelling crane hoisting mechanism braking ability early warning system | |
| CN202785224U (en) | Escalator running recording and monitoring device | |
| CN107265326A (en) | Electric travelling crane hoisting mechanism braking ability early warning system | |
| CN204917501U (en) | Elevator system with monitoring prevents unexpected removal of car and out of control | |
| CN203143960U (en) | Gantry crane with automatic warning function of personnel protection | |
| CN109538569B (en) | Detection system and method for hydraulic motor and engineering vehicle | |
| CN205151625U (en) | Well drilling winch state monitoring and fault diagnosis system | |
| CN205580508U (en) | Hoist engine safety precaution system | |
| CN205274936U (en) | Heavy safety device of limit and elevating gear | |
| CN104787680A (en) | Control device and control method for lifting height of crane | |
| CN210764084U (en) | Monitoring system for main lifting transmission system of casting crane | |
| CN104477809B (en) | The two close cycles adjusting means of mine hoist braking and braking method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |