CN105785204B - A kind of steel wire rope looseness detection sensor device - Google Patents
A kind of steel wire rope looseness detection sensor device Download PDFInfo
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- CN105785204B CN105785204B CN201610318107.XA CN201610318107A CN105785204B CN 105785204 B CN105785204 B CN 105785204B CN 201610318107 A CN201610318107 A CN 201610318107A CN 105785204 B CN105785204 B CN 105785204B
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- steel wire
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention relates to a kind of steel wire rope looseness detection sensor devices, including electrical appliance kit (1), contact bar (4), insulating supporting (5) and slack rope detection circuit, it is characterized in that, the contact bar (4) is mounted on by insulating supporting (5) in the ground base of the side of winch (3) folding and unfolding steel wire rope, contact bar (4) is located at the lower section of steel wire rope, slack rope detection circuit for detect steel wire rope it is whether loose and touch contact bar (4), the steel wire rope is electrically connected by winch (3) vehicle frame and the conducting wire being connected on winch (3) vehicle frame with ground connection (GND) terminal of slack rope detection circuit, the contact bar (4) is electrically connected by conducting wire with detection (SENSE) terminal of slack rope detection circuit.The steel wire rope looseness detection sensor device of the present invention, it is simple in structure, it is convenient for installation and maintenance, it is of low cost；And it operates steadily, the high sensitivity of signal detection, effect are good；It can easily be moved along grooving in steel wire cable and generate the detection of slack rope when moving horizontally, detection range is wide.
Description
Technical field
The present invention relates to the locking monitoring technical fields of steel wire rope, and in particular to a kind of steel wire rope looseness detection sensor dress
It sets.
Background technology
With the development of global economy, also there is present flourish vital in sea transport industry, pulls in shore to feed through mode in the past
The needs of maritime traffic transport cannot be met, and often can not sometimes by bad sea situation and boisterous influence, ship
It pulls in shore to feed, this directly affects the supply of ships goods.In this case, ship ocean supply just seems especially important
?.When ship needs make-up oil, water and other cargos in ocean, need to establish steel wire in tender and between being recharged ship
Cable connects, and establishes supply access by means of steel wire cable, and supply or handling are realized by feeding access.For ocean
Ship replenishment operation, device for supplying are undoubtedly most important component part.But since the distance of two ships, supply access are heavier
It is longer and influenced by wave, marine ship can be carried out with wave it is irregular wave, frequently can lead to device for supplying
The loosening of middle steel wire cable, is frequently accompanied by the appearance of security risk.
In order to avoid the generation of accident, the general detection device that safeguard protection can be all set on steel wire rope.It is used at present
Steel wire rope looseness detection method is typically all direct additional external force (or gravity) mechanism on a steel cord, keeps it disconnected in steel wire rope pine
Sink to detecting when rope.This detection method usually requires to apply steel wire rope certain external force, when steel wire rope is due to failure etc.
When reason slack rope or disconnected rope, the displacement occurred by detecting steel wire rope, to realize the purpose of steel wire rope looseness detection.Due to
External force is applied with to steel wire rope, the stationarity of this service life to steel wire rope and the cargo by steel wire rope transportation can all have
Certain influence.The detection device of such detection steel wire rope looseness is more serious to the abrasion of steel wire rope and complicated, clever
Sensitivity is relatively low.
Invention content
The present invention provides and a kind of steel wire rope looseness detection sensor device, it is simple in structure, convenient for installation and maintenance, clever
Sensitivity is high, can detect that steel wire cable loosens in device for supplying well.
The specific technical solution of the present invention is a kind of steel wire rope looseness detection sensor device, including electrical appliance kit, contact
Bar, insulating supporting and slack rope detection circuit, which is characterized in that
In the ground base for the side that the contact bar is mounted on winch folding and unfolding steel wire rope by insulating supporting, bar is contacted
Positioned at the lower section of steel wire rope, contact bar material is conductive metal material,
The circuit board of the slack rope detection circuit is mounted in the electrical appliance kit, and slack rope detection circuit is for detecting steel
Whether cord is loose and touches contact bar,
The steel wire rope is connect by winch vehicle frame and the conducting wire being connected on winch vehicle frame and slack rope detection circuit
Ground terminal electrical connection, the contact bar are electrically connected by conducting wire with the detection terminal of slack rope detection circuit.
Further, the contact bar includes proximal contact bar, distal end contact bar, swivel mount and positioning screw, institute
The proximal contact bar stated and distal end contact bar be fixed on the both ends of the rotary shaft of swivel mount, proximal contact bar and distal end contact bar and
The rotation axis of swivel mount is parallel, and the distance of rotation axis of the proximal contact bar away from swivel mount is less than distal end contact bar away from swivel mount
Rotation axis distance, the swivel mount by hinge be mounted on insulating supporting on, the positioning screw be located at rotation
On circumference on the outside of frame rotary shaft, there are the multiple positioning screw holes coordinated with positioning screw, multiple positioning spiral shells on insulating supporting
For the even cloth in hole on the circumference of diameter same as installation positioning screw circumference, positioning screw, which can screw in positioning screw hole, makes swivel mount consolidate
It is fixed motionless.
Further, the slack rope detection circuit includes power converting circuit, signal deteching circuit and signal transformation
Circuit, the power converting circuit are used to external power supply steadily becoming the electricity needed for signal deteching circuit by converting
Source, the signal deteching circuit are used to detect whether the resistance between ground terminal and detection terminal to be more than 0.8k, if greatly
Then illustrate steel wire rope not with contact bar touching in 0.8k, it is on the contrary then illustrate that steel wire rope is loose and touched with contact bar, it is described
Signal transfer circuit is used for the change transitions of electric current in signal deteching circuit into the action of relay.
Further, the power converting circuit includes power outlet, earthing or grounding means, fuse, voltage transformation core
Piece, inductance, the first capacitance, the second capacitance, the 5th resistance, the 5th diode and light emitting diode, the voltage transformation chip
Model National Semiconductor LM2576, fuse access power outlet anode, power outlet cathode ground connection,
5th resistance, the first capacitance anode access fuse in parallel with 1 foot of voltage transformation chip after, the other end of the 5th resistance
Access the anode of light emitting diode, the cathode ground connection of light emitting diode, the first capacitance cathode ground connection, 3 feet of voltage transformation chip
With 5 foot earths, 4 feet of voltage transformation chip draw the anode of 12V power supplys, access inductance in parallel and the five or two pole on 2 feet
The cathode of pipe, the 5th diode accesses 2 feet, and the other end of the plus earth of the 5th diode, inductance accesses voltage transformation chip
4 feet, the second capacitance anode access voltage transformation chip 4 feet, the second capacitance cathode ground connection.
Further, the signal deteching circuit includes external circuit socket, first resistor, second resistance, third
Capacitance, the first diode and the second diode, external circuit socket both ends are connect with ground terminal and detection terminal respectively, external
One end ground connection that circuit socket is connect with ground terminal, 4 feet of the cathode access voltage transformation chip of the first diode, the one or two
One end access voltage of the cathode of anode the second diode of access of pole pipe, the plus earth of the second diode, first resistor becomes
4 feet of chip, the anode of the other end access third capacitance of first resistor are changed, the cathode of third capacitance is grounded, second resistance
The cathode of the second diode, the anode of the another one end access third capacitance of second resistance, external circuit socket and inspection are accessed in one end
The one end for surveying terminal connection is connect with the cathode of the second diode.
Further, the signal transfer circuit includes 3rd resistor, the 4th resistance, third diode, the four or two
Pole pipe, the first triode, the second triode and relay；3rd resistor access voltage transformation in parallel with the anode of third diode
4 feet of chip, the other end of 3rd resistor access the emitter of the second triode, and the base stage of the second triode accesses signal detection
The anode of third capacitance in circuit, the grounded collector of the second triode, the input of the cathode cut-in relay of third diode
Another input terminal at end, relay accesses the first transistor collector, the first transistor emitter ground connection, the first transistor base
The anode and the 4th resistance of 4th diode of upper access in parallel, the cathode of the 4th diode access the emitter of the second triode,
The other end of 4th resistance is grounded.
The beneficial effects of the invention are as follows the steel wire rope looseness detection sensor device of the present invention, simple in structure, installation maintenances
It is convenient, it is of low cost；And it operates steadily, the high sensitivity of signal detection, effect are good；It can be easily on steel wire cable edge
Grooving moves and generates slack rope detection when moving horizontally, and detection range is wide.
Description of the drawings
Fig. 1 is the structural schematic diagram of steel wire rope looseness detection sensor device of the present invention；
Fig. 2 is the wiring diagram of the electrical appliance kit of steel wire rope looseness detection sensor device of the present invention；
Fig. 3 is the slack rope detection circuit schematic diagram of steel wire rope looseness detection sensor device of the present invention.
In figure:1, electrical appliance kit, 2, winch connect bolt, 3, winch, 4, contact bar, 5, insulating supporting, 6, contact bar connection
Bolt.
Specific implementation mode
Technical scheme of the present invention is further described below in conjunction with the accompanying drawings.
As shown in Fig. 1, a kind of steel wire rope looseness detection sensor device of the invention, including the connection of electrical appliance kit 1, winch
Bolt 2, winch 3, contact bar 4, insulating supporting 5 connect bolt 6 with contact bar.Electrical appliance kit 1 is by being fixed on 3 vehicle frame side of winch
On；Contact 4 both ends of bar are located under steel wire rope by insulating supporting 5 and the reel front by being fixed on winch 4, ensure to connect
Feeler lever 4 insulate with winch 3；There is threaded hole in 4 end of contact bar, and 6 fixed cable of bolt is connected by contacting bar；On 3 vehicle frame of winch
There is threaded hole, connecting bolt 2 by winch connects ground cable.
The contact bar 4 includes that proximal contact bar, distal end contact bar, swivel mount and positioning screw, the proximal end connect
Feeler lever and distal end contact bar are fixed on the both ends of the rotary shaft of swivel mount, and proximal contact bar and distal end contact the rotation of bar and swivel mount
Shaft axis is parallel, and the distance of rotation axis of the proximal contact bar away from swivel mount is less than distal end contact rotation axis of the bar away from swivel mount
Distance, the swivel mount by hinge be mounted on insulating supporting 5 on, the positioning screw is located at outside swivel mount rotary shaft
On the circumference of side, there are multiple positioning screw holes for coordinating with positioning screw on insulating supporting 5, multiple even cloth of positioning screw hole with
On the circumference for installing the same diameter of positioning screw circumference, positioning screw, which can screw in positioning screw hole, keeps swivel mount fixed.This
Sample can adjust the contact height of bar 4 and front and back according to the difference of the thickness of the steel wire rope on winch 3, model and testing requirements
Position.
As shown in Fig. 2, with a 4mm2Ground cable one end is fixed on 1 grounding nut of electrical appliance kit, and one end is fixed on
On 4 vehicle frame of winch, all ground connection GND terminals short circuit；With a 4mm2Cable one end passes through in stuffing-box circuit closer box 1
SENSE terminals, one end are fixed on contact bar 4；Pass through GND, DC24V in stuffing-box difference circuit closer box 1 with 2 core cables
Terminal, 2 core cables are another to be connected to electrical control cabinet, for powering to the slack rope detection circuit in electrical appliance kit 1；With 3 cores
Cable is by COM, NC, NO terminal in stuffing-box circuit closer box, and 3 core cables are another to be connected to electrical control cabinet, steel wire rope
Loose on-off model is transmitted to the input terminal of the PLC in switch board, and PLC is enable to detect that steel wire rope has relaxed, to give
Go out alarm signal.
As shown in Fig. 3, slack rope detection circuit includes power converting circuit, signal deteching circuit and signal transfer circuit.
The power converting circuit is exactly by external power supply by transformation, the stable power supply become needed for signal deteching circuit；It is described
Signal deteching circuit is just monitored the working condition of 3 steel wire rope of winch, according to the both ends external circuit socket J2 resistance whether
More than 0.8k (or open circuit), the variation of electric current in signal deteching circuit is further caused.It is grounded GND terminal and the ends detection SENSE
For resistance between son by first resistor R1, second resistance R2, the 5th resistance R5 and the second triode T2 composition resistance are more electric
The detection on road, when the resistance between detection ground connection GND terminal and detection SENSE terminals is less than 0.8K, the second triode T2 is opened,
The first triode T1 is controlled to open, it is final to control relay RL1 actions；The signal transfer circuit is exactly to use a relay
By the variation of electric current in signal deteching circuit, it is transformed into the signal for causing electrical control cabinet to change, only needs letter to reach
Single telemetry circuit can detection process steel wire rope looseness the problem of.
As a preferred embodiment, the signal deteching circuit includes a power outlet J1, an external electrical
Road socket J2, an earthing or grounding means J4, a fuse F1, voltage transformation chip U1, first resistor R1, a second resistance
R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the first capacitance C1, the second capacitance C2, third capacitance C3, the one or two pole
Pipe D1, the second diode D2, third diode D3, the 4th diode D4, the 5th diode D5, light emitting diode D6, one
A inductance L1, the first triode T1, the second triode T2 and a relay RL1.Wherein power outlet J1, earthing or grounding means J4,
Fuse F1, voltage transformation chip U1, inductance L1, the first capacitance C1, the second capacitance C2, the 5th resistance R5, the 5th diode D5
Power converting circuit is formed with light emitting diode；The both ends of power outlet J1 connect with GND, DC24V terminal in electrical appliance kit 1 respectively
It connects, fuse F1 accesses positive pole, and the 5th resistance R5, the anode of the first capacitance C1 are in parallel with 1 foot of voltage transformation chip U1
It accesses after fuse, the anode of the other end access light emitting diode of the 5th resistance R5, the cathode ground connection of light emitting diode, the
One capacitance C1 cathode are grounded, 3 feet of voltage transformation chip U1 and 5 foot earths, and 4 feet of voltage transformation chip U1 draw 12V
The anode of power supply, cathode 2 feet of access of access inductance L1 and the 5th diode D5, the 5th diode D5 in parallel on 2 feet, the five or two
The plus earth of pole pipe D5,4 feet of the other end access voltage transformation chip U1 of inductance L1, the anode access electricity of the second capacitance C2
Buckling changes 4 feet of chip U1, the cathode ground connection of the second capacitance C2.First resistor R1, second resistance R2, third capacitance C3, first
Diode D1, the second diode D2, external circuit socket J2 form signal deteching circuit；The both ends external circuit socket J2 respectively with
Ground connection GND terminal is connected with detection SENSE terminals, 4 feet of the cathode access voltage transformation chip U1 of the first diode D1, and first
The cathode of the second diode D2 of anode access of diode D1, the plus earth of the second diode D2, one end of first resistor R1
4 feet of voltage transformation chip U1 are accessed, the anode of the other end access third capacitance C3 of first resistor R1, third capacitance C3's is negative
Pole is grounded, and the cathode of the second diode D2 is accessed in one end of second resistance R2, and third capacitance is accessed in one end another second resistance R2
The anode of C3, the both ends of external circuit socket J2 connect the anode of the cathode and the second diode D2 of the second diode D2 respectively.The
Three resistance R3, the 4th resistance R4, third diode D3, the 4th diode D4, the first triode T1, the second triode T2 and relay
Device RL1 forms signal transfer circuit；The 4 of 3rd resistor R3 access voltage transformation chip U1s in parallel with the anode of third diode D3
Foot, the other end of 3rd resistor R3 access the emitter of the second triode T2, and the base stage of the second triode T2 accesses signal detection
The anode of third capacitance C3 in circuit, the grounded collector of the second triode T2, the cathode cut-in relay of third diode D3
Another input terminal of the input terminal of RL1, relay RL1 accesses the first triode T1 collectors, and the first triode T1 emitters connect
Ground, the anode of 4th diode D4 of access in parallel and the 4th resistance R4's, the 4th diode D4 is negative in the first triode T1 base stages
The emitter of the second triode T2, the other end ground connection of the 4th resistance R4 are accessed in pole.Relay RL1 control relay RL1's connects
Line terminals arrange J3, and 1,2,3 feet are connect with COM, NC, NO terminal of relay RL1 respectively.
The operation principle of foregoing circuit is as described below：
Power outlet J1 is DC24V power supply power supplies, and chip LM2576 generates 12V voltages.When 4 steel wire tensioning of winch, no
When being contacted with contact bar, the both ends external circuit socket J2 resistance is more than 0.8k (or open circuit), the second triode T2 base voltages compared with
Height, the second triode T2 are not turned on, to which the first triode T1 base voltages are higher, the first triode T1 conductings, and relay RL1
It obtains electric；When 4 steel wire rope looseness of winch, when being contacted with contact bar, the both ends external circuit socket J2 resistance is less than 0.8k (or short circuit),
Second triode T2 base voltages are relatively low, the second triode T2 conductings, to which the first triode T1 base stages are 0, the first triode
T1 is not turned on, relay RL1 dead electricity.
Claims (6)
1. a kind of steel wire rope looseness detection sensor device, including electrical appliance kit (1), contact bar (4), insulating supporting (5) and slack rope
Detection circuit, which is characterized in that
The contact bar (4) is mounted on by insulating supporting (5) in the ground base of the side of winch (3) folding and unfolding steel wire rope,
Contact bar (4) is located at the lower section of steel wire rope, and contact bar (4) material is conductive metal material,
The circuit board of the slack rope detection circuit is mounted in the electrical appliance kit (1), and slack rope detection circuit is for detecting steel
Whether cord is loose and touches contact bar (4),
The steel wire rope passes through winch (3) vehicle frame and the conducting wire being connected on winch (3) vehicle frame and slack rope detection circuit
It is grounded the electrical connection of (GND) terminal, the contact bar (4) passes through conducting wire and detection (SENSE) terminal of slack rope detection circuit electricity
Connection.
2. a kind of steel wire rope looseness detection sensor device as described in claim 1, which is characterized in that the contact bar
(4) include proximal contact bar, distal end contact bar, swivel mount and positioning screw, the proximal contact bar and distal end contact bar are solid
The both ends of the rotary shaft of swivel mount are scheduled on, proximal contact bar and distal end contact bar are parallel with the rotation axis of swivel mount, and proximal end connects
The distance of rotation axis of the feeler lever away from swivel mount is less than the distance that distal end contacts rotation axis of the bar away from swivel mount, the rotation
Frame is mounted on by hinge on insulating supporting (5), and the positioning screw is located on the circumference on the outside of swivel mount rotary shaft, exhausted
There are multiple positioning screw holes for coordinate with positioning screw in edge support (5), multiple even cloth of positioning screw hole with positioning screw is installed
On the circumference of the same diameter of circumference, positioning screw, which can screw in positioning screw hole, keeps swivel mount fixed.
3. a kind of steel wire rope looseness detection sensor device as described in claim 1, which is characterized in that the slack rope detection
Circuit includes power converting circuit, signal deteching circuit and signal transfer circuit, and the power converting circuit is used for will be external
Power supply steadily becomes the power supply needed for signal deteching circuit by transformation, and the signal deteching circuit is grounded for detecting
(GND) whether the resistance between terminal and detection (SENSE) terminal is more than 0.8k, then illustrates that steel wire rope does not have if it is greater than 0.8k
Touched with contact bar (4), on the contrary it is then illustrate that steel wire rope is loose and with contact bar (4) touching, the signal transfer circuit is used for
By the change transitions of electric current in signal deteching circuit at the action of relay.
4. a kind of steel wire rope looseness detection sensor device as claimed in claim 3, which is characterized in that the power conversion
Circuit includes power outlet (J1), earthing or grounding means (J4), fuse (F1), voltage transformation chip (U1), inductance (L1), the first electricity
Hold (C1), the second capacitance (C2), the 5th resistance (R5), the 5th diode (D5) and light emitting diode (D6), the voltage becomes
The LM2576 of the model National Semiconductor of chip (U1) is changed, fuse (F1) accesses power outlet (J1) anode,
The cathode of power outlet (J1) is grounded, the 5th resistance (R5), the anode of the first capacitance (C1) and 1 foot of voltage transformation chip (U1)
After parallel connection access fuse (F1), the anode of the other end access light emitting diode (D6) of the 5th resistance (R5), light-emitting diodes
Manage the cathode ground connection of (D6), the first capacitance (C1) cathode ground connection, 3 feet of voltage transformation chip (U1) and 5 foot earths, voltage
4 feet for converting chip (U1) draw the anode of 12V power supplys, access inductance (L1) in parallel and the 5th diode (D5) on 2 feet, and the 5th
The cathode of diode (D5) accesses 2 feet, and the other end of the plus earth of the 5th diode (D5), inductance (L1) accesses voltage transformation
4 feet of chip (U1), 4 feet of the anode access voltage transformation chip (U1) of the second capacitance (C2), the cathode of the second capacitance (C2)
Ground connection.
5. a kind of steel wire rope looseness detection sensor device as claimed in claim 4, which is characterized in that the signal detection
Circuit includes external circuit socket (J2), first resistor (R1), second resistance (R2), third capacitance (C3), the first diode
(D1) and the second diode (D2), the both ends external circuit socket (J2) respectively with ground connection (GND) terminal and detection (SENSE) terminal
Connection, one end that external circuit socket (J2) is connect with ground connection (GND) terminal are grounded, the cathode access electricity of the first diode (D1)
Buckling changes 4 feet of chip (U1), the cathode of anode the second diode of access (D2) of the first diode (D1), the second diode
(D2) plus earth, first resistor (R1) one end access voltage transformation chip (U1) 4 feet, first resistor (R1) it is another
Terminate the anode into third capacitance (C3), the cathode ground connection of third capacitance (C3), one end access the two or two of second resistance (R2)
The cathode of pole pipe (D2), second resistance (R2) it is another one end access third capacitance (C3) anode, external circuit socket (J2) with
One end of detection (SENSE) terminal connection is connect with the cathode of the second diode (D2).
6. a kind of steel wire rope looseness detection sensor device as claimed in claim 5, which is characterized in that the signal transformation
Circuit includes 3rd resistor (R3), the 4th resistance (R4), third diode (D3), the 4th diode (D4), the first triode
(T1), the second triode (T2) and relay (RL1)；3rd resistor (R3) access electricity in parallel with the anode of third diode (D3)
Buckling changes 4 feet of chip (U1), and the other end of 3rd resistor (R3) accesses the emitter of the second triode (T2), the second triode
(T2) anode of third capacitance (C3) in base stage access signal deteching circuit, the grounded collector of the second triode (T2), the
Another input terminal of the input terminal of the cathode cut-in relay (RL1) of three diodes (D3), relay (RL1) accesses the one or three pole
(T1) collector is managed, the first triode (T1) emitter is grounded, 4th diode of access in parallel in the first triode (T1) base stage
(D4) anode and the 4th resistance (R4), the emitter of cathode the second triode of access (T2) of the 4th diode (D4), the 4th
The other end of resistance (R4) is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318107.XA CN105785204B (en) | 2016-05-13 | 2016-05-13 | A kind of steel wire rope looseness detection sensor device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318107.XA CN105785204B (en) | 2016-05-13 | 2016-05-13 | A kind of steel wire rope looseness detection sensor device |
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| Publication Number | Publication Date |
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| CN105785204A CN105785204A (en) | 2016-07-20 |
| CN105785204B true CN105785204B (en) | 2018-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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|---|---|---|---|---|
| AU8466182A (en) * | 1981-06-15 | 1982-12-23 | Anglo American Corporation Of South Africa Limited | Slack rope detecting apparatus |
| CN102214913A (en) * | 2011-05-09 | 2011-10-12 | 中国振华集团群英无线电器材厂 | Sealed phase shortage protection relay of three-phase source |
| CN202344082U (en) * | 2011-10-31 | 2012-07-25 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Intelligent welding platform |
| CN202455034U (en) * | 2011-12-08 | 2012-09-26 | 施孟伟 | Tripping circuit of inrush current controller for high-voltage switch |
| CN102785978A (en) * | 2012-07-26 | 2012-11-21 | 江西稀有金属钨业控股集团有限公司 | Method for real-time monitoring and control protection of hoisting rope of hoisting equipment |
| CN204224006U (en) * | 2014-09-26 | 2015-03-25 | 枣庄矿业集团新安煤业有限公司 | Single rope winding hoist rope-loosing protection device |
-
2016
- 2016-05-13 CN CN201610318107.XA patent/CN105785204B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU8466182A (en) * | 1981-06-15 | 1982-12-23 | Anglo American Corporation Of South Africa Limited | Slack rope detecting apparatus |
| CN102214913A (en) * | 2011-05-09 | 2011-10-12 | 中国振华集团群英无线电器材厂 | Sealed phase shortage protection relay of three-phase source |
| CN202344082U (en) * | 2011-10-31 | 2012-07-25 | 郑州人造金刚石及制品工程技术研究中心有限公司 | Intelligent welding platform |
| CN202455034U (en) * | 2011-12-08 | 2012-09-26 | 施孟伟 | Tripping circuit of inrush current controller for high-voltage switch |
| CN102785978A (en) * | 2012-07-26 | 2012-11-21 | 江西稀有金属钨业控股集团有限公司 | Method for real-time monitoring and control protection of hoisting rope of hoisting equipment |
| CN204224006U (en) * | 2014-09-26 | 2015-03-25 | 枣庄矿业集团新安煤业有限公司 | Single rope winding hoist rope-loosing protection device |
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| Title |
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| Publication number | Publication date |
|---|---|
| CN105785204A (en) | 2016-07-20 |
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