CN105785204A - Steel wire rope looseness detection sensor device - Google Patents
Steel wire rope looseness detection sensor device Download PDFInfo
- Publication number
- CN105785204A CN105785204A CN201610318107.XA CN201610318107A CN105785204A CN 105785204 A CN105785204 A CN 105785204A CN 201610318107 A CN201610318107 A CN 201610318107A CN 105785204 A CN105785204 A CN 105785204A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- diode
- wire rope
- resistance
- contact bar
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention relates to a steel wire rope looseness detection sensor device. The steel wire rope looseness detection sensor device includes an electrical box (1), a contact rod (4), insulating supports (5) and a rope looseness detection circuit. The steel wire rope looseness detection sensor device is characterized in that: the contact rod (4) is mounted on a ground base at one side of a steel wire rope collected and released by a winch (3) through the insulating supports (5); the contact rod (4) is located below the steel wire rope; the rope looseness detection circuit is used for detecting whether the steel wire rope is loose and touches the contact rod (4); the steel wire rope is electrically connected with a grounding (GND) terminal of the rope looseness detection circuit through the rack of the winch (3) and a wire connected onto the rack of the winch (3); and the contact rod (4) is electrically connected with a detection (SENSE) terminal of the rope looseness detection circuit through a wire. The steel wire rope looseness detection sensor device of the invention has the advantages of simple structure, convenient installation and maintenance, low cost, stable operation, high signal detection sensitivity, excellent effects and wide detection range; and the steel wire rope looseness detection sensor device can conveniently perform rope looseness detection when a steel wire rope moves along a rope groove and carries out horizontal movement.
Description
Technical field
The present invention relates to the locking monitoring technical field of steel wire rope, be specifically related to a kind of steel wire rope looseness detection sensor device.
Background technology
Development along with global economy, sea transport industry also occurs in that present flourish vital, and supply of in the past pulling in shore can not meet the needs of maritime traffic transport through mode, and is sometimes subject to bad sea situation and boisterous impact, boats and ships often cannot pull in shore to feed, and this directly affects the supply of boats and ships goods and materials.In this case, boats and ships ocean feeds the particular importance that just seems.When boats and ships need make-up oil, water and other goods in ocean, it is necessary at tender be recharged between ship to set up steel wire cable and connect, and set up supply path by means of steel wire cable, realize supply or handling by feeding path.For foreign-going ship replenishment operation, device for supplying is undoubtedly most important ingredient.But, owing to the distance of two ships, supply path are heavier longer and by the impact of wave, marine boats and ships can carry out irregular waving along with wave, frequently can lead to loosening of steel wire cable in device for supplying, be frequently accompanied by the appearance of potential safety hazard.
In order to avoid the generation of accident, steel wire rope generally all can arrange the detecting device of safeguard protection.Currently used steel wire rope looseness detection method is typically all on a steel cord directly additional external force (or gravity) mechanism so that it is sink to detecting when the disconnected rope of steel wire rope pine.This detection method typically requires and steel wire rope is applied certain external force, during when steel wire rope due to failure and other reasons slack rope or disconnected rope, by detecting the displacement that steel wire rope occurs, realizes the purpose of steel wire rope looseness detection.Owing to steel wire rope is applied with external force, the stationarity of this service life to steel wire rope and the goods by steel wire rope transportation all can have a certain impact.The detecting device of this kind of detection steel wire rope looseness is comparatively serious to the abrasion of steel wire rope, and structure is complicated, sensitivity is relatively low.
Summary of the invention
The invention provides and a kind of steel wire rope looseness detection sensor device, its simple in construction, convenient for installation and maintenance, highly sensitive, it is possible to detect that in device for supplying, steel wire cable loosens well.
The concrete technical scheme 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 testing circuit, it is characterised in that
Described contact bar is arranged in the ground base of side of winch folding and unfolding steel wire rope by insulating supporting, and contact bar is positioned at the lower section of steel wire rope, and contact bar material is conductive metal material,
The circuit board of described slack rope testing circuit is arranged in described electrical appliance kit, and whether slack rope testing circuit is used for detecting steel wire rope loose and touch contact bar,
Described steel wire rope electrically connect with the ground terminal of slack rope testing circuit by winch vehicle frame and the wire that is connected on winch vehicle frame, and the described bar that contacts passes through wire and electrically connects with the detection terminal of slack rope testing circuit.
Further, described contact bar includes proximal contact bar, distal contact bar, swivel mount and location screw, described proximal contact bar and distal contact bar are fixed on the two ends of the rotating shaft of swivel mount, proximal contact bar is parallel with the rotation axis of swivel mount with distal contact bar, the distance of the proximal contact bar rotation axis from swivel mount is less than the distance of the distal contact bar rotation axis from swivel mount, described swivel mount is arranged on insulating supporting by hinge, described location screw is positioned on the circumference outside swivel mount rotating shaft, insulating supporting has and multiple positioning screw holes of location screw fit, the even cloth of multiple positioning screw holes is on the circumference of diameter same with installing location circumferential screw, location screw can screw in positioning screw hole makes swivel mount maintain static.
Further, described slack rope testing circuit includes power converting circuit, signal deteching circuit and signal transfer circuit, described power converting circuit is for passing through conversion by external power source, stably become the power supply needed for signal deteching circuit, whether the resistance that described signal deteching circuit is used for detecting between ground terminal and detection terminal is more than 0.8k, then illustrate that if greater than 0.8k steel wire rope does not have and contacts bar touching, otherwise then illustrate steel wire rope loose and touch with contacting bar, described signal transfer circuit is for becoming the action of relay by the change transitions of electric current in signal deteching circuit.
nullFurther，Described power converting circuit includes supply socket、Grounding device、Fuse、Voltage transformation chip、Inductance、First electric capacity、Second electric capacity、5th resistance、5th diode and light emitting diode，The LM2576 that model is National Semiconductor of described voltage transformation chip，Fuse accesses supply socket positive pole，The minus earth of supply socket，5th resistance、After the positive pole of the first electric capacity access in parallel with 1 foot of voltage transformation chip fuse，The other end of the 5th resistance accesses the positive pole of light emitting diode，The minus earth of light emitting diode，First electric capacity minus earth，3 feet of voltage transformation chip and 5 foot earths，4 feet of voltage transformation chip draw the positive pole of 12V power supply，Access inductance in parallel and the 5th diode on 2 feet，The negative pole of the 5th diode accesses 2 feet，The plus earth of the 5th diode，The other end of inductance accesses 4 feet of voltage transformation chip，The positive pole of the second electric capacity accesses 4 feet of voltage transformation chip，The minus earth of the second electric capacity.
Further, described signal deteching circuit includes external circuit socket, first resistance, second resistance, 3rd electric capacity, first diode and the second diode, external circuit socket two ends are connected with ground terminal and detection terminal respectively, one end ground connection that external circuit socket is connected with ground terminal, the negative pole of the first diode accesses 4 feet of voltage transformation chip, the positive pole of the first diode accesses the negative pole of the second diode, the plus earth of the second diode, 4 feet of voltage transformation chip are accessed in one end of first resistance, the other end of the first resistance accesses the positive pole of the 3rd electric capacity, the minus earth of the 3rd electric capacity, the negative pole of the second diode is accessed in one end of second resistance, the positive pole of one end access the 3rd electric capacity that the second resistance is another, one end that external circuit socket is connected with detection terminal is connected with the negative pole of the second diode.
Further, described signal transfer circuit includes the 3rd resistance, the 4th resistance, the 3rd diode, the 4th diode, the first audion, the second audion and relay；The positive pole parallel connection of the 3rd resistance and the 3rd diode accesses 4 feet of voltage transformation chip, the other end of the 3rd resistance accesses the emitter stage of the second audion, the base stage of the second audion accesses the positive pole of the 3rd electric capacity in signal deteching circuit, the grounded collector of the second audion, the input of the negative pole cut-in relay of the 3rd diode, another input of relay accesses the first transistor collector, first transistor emitter ground connection, the positive pole accessing the 4th diode in parallel and the 4th resistance on first transistor base, the negative pole of the 4th diode accesses the emitter stage of the second audion, the other end ground connection of the 4th resistance.
The invention has the beneficial effects as follows the steel wire rope looseness of the present invention detection sensor device, simple in construction, convenient for installation and maintenance, with low cost；And its operate steadily, signal detection highly sensitive, effective；Can move along grooving at steel wire cable easily and produce slack rope detection when moving horizontally, detection range width.
Accompanying drawing explanation
Fig. 1 is the structural representation of steel wire rope looseness of the present invention detection sensor device；
Fig. 2 is the wiring diagram of the electrical appliance kit of steel wire rope looseness of the present invention detection sensor device；
Fig. 3 is the slack rope testing circuit schematic diagram of steel wire rope looseness of the present invention detection sensor device.
In figure: 1, electrical appliance kit, 2, winch connecting bolt, 3, winch, 4, contact bar, 5, insulating supporting, 6, contact bar connecting bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is further described.
As shown in Figure 1, a kind of steel wire rope looseness detection sensor device of the present invention, including electrical appliance kit 1, winch connecting bolt 2, winch 3, contact bar 4, insulating supporting 5 and contact bar connecting bolt 6.Electrical appliance kit 1 is by being fixed on winch 3 vehicle frame side；Contact bar 4 two ends, by insulating supporting 5 and by being fixed on the reel front of winch 4, are positioned under steel wire rope, it is ensured that contact bar 4 insulate with winch 3；There is screwed hole contact bar 4 end, by contacting bar connecting bolt 6 fixed cable；Winch 3 vehicle frame there is screwed hole, connects ground cable by winch connecting bolt 2.
Described contact bar 4 includes proximal contact bar, distal contact bar, swivel mount and location screw, described proximal contact bar and distal contact bar are fixed on the two ends of the rotating shaft of swivel mount, proximal contact bar is parallel with the rotation axis of swivel mount with distal contact bar, the distance of the proximal contact bar rotation axis from swivel mount is less than the distance of the distal contact bar rotation axis from swivel mount, described swivel mount is arranged on insulating supporting 5 by hinge, described location screw is positioned on the circumference outside swivel mount rotating shaft, insulating supporting 5 has and multiple positioning screw holes of location screw fit, the even cloth of multiple positioning screw holes is on the circumference of diameter same with installing location circumferential screw, location screw can screw in positioning screw hole makes swivel mount maintain static.As such, it is possible to the difference according to the thickness of the steel wire rope on winch 3, model and testing requirement, adjust height and the front and back position of contact bar 4.
As shown in Figure 2, with a 4mm2Ground cable one end is fixed on electrical appliance kit 1 grounding nut, and one end is fixed on winch 4 vehicle frame, all ground connection GND terminal short circuit all；With a 4mm2Cable one end is by the SENSE terminal in stuffing-box circuit closer box 1, on the fixing contact in one end bar 4；With 2 core cables by GND, DC24V terminal in stuffing-box respectively circuit closer box 1, the 2 core cable other ends are connected to electrical control cabinet, for powering to the slack rope testing circuit in electrical appliance kit 1；With 3 core cables by COM, NC, NO terminal in stuffing-box circuit closer box, the 3 core cable other ends are connected to electrical control cabinet, the input of the PLC that the on-off model of steel wire rope looseness is sent in switch board, and steel wire rope is lax to make PLC to detect, thus, provide alarm signal.
As shown in Figure 3, slack rope testing circuit includes power converting circuit, signal deteching circuit and signal transfer circuit.Described power converting circuit is exactly that stable becomes the power supply needed for signal deteching circuit through changing by external power source；The duty of winch 3 steel wire rope is just monitored by described signal deteching circuit, according to external circuit socket J2 two ends resistance whether more than 0.8k (or open circuit), causes the change of electric current in signal deteching circuit further.Resistance between ground connection GND terminal and detection SENSE terminal is by the first resistance R1, second resistance R2,5th resistance R5 and the second audion T2 constitutes the detection of resistance comparison circuit, resistance between detection ground connection GND terminal and detection SENSE terminal is less than 0.8K, second audion T2 opens, control the first audion T1 to open, final control relay R L1 action；Described signal transfer circuit is exactly use a relay by the change of electric current in signal deteching circuit, is transformed into the signal causing electrical control cabinet to change, thus having reached only to need simple telemetry circuit just can detect the problem processing steel wire rope looseness.
As a preferred embodiment, described signal deteching circuit includes a supply socket J1, one external circuit socket J2, one grounding device J4, one fuse F1, one voltage transformation chip U1, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, first diode D1, second diode D2, 3rd diode D3, 4th diode D4, 5th diode D5, one light emitting diode D6, one inductance L1, first audion T1, a second audion T2 and relay R L1.Wherein supply socket J1, grounding device J4, fuse F1, voltage transformation chip U1, inductance L1, the first electric capacity C1, the second electric capacity C2, the 5th resistance R5, the 5th diode D5 and light emitting diode composition power converting circuit；nullThe two ends of supply socket J1 respectively with the GND in electrical appliance kit 1、DC24V terminal connects，Fuse F1 accesses positive source，5th resistance R5、After the positive pole of the first electric capacity C1 access in parallel with 1 foot of voltage transformation chip U1 fuse，The other end of the 5th resistance R5 accesses the positive pole of light emitting diode，The minus earth of light emitting diode，First electric capacity C1 minus earth，3 feet of voltage transformation chip U1 and 5 foot earths，4 feet of voltage transformation chip U1 draw the positive pole of 12V power supply，Access inductance L1 and the five diode D5 in parallel on 2 feet，The negative pole of the 5th diode D5 accesses 2 feet，The plus earth of the 5th diode D5，The other end of inductance L1 accesses 4 feet of voltage transformation chip U1，The positive pole of the second electric capacity C2 accesses 4 feet of voltage transformation chip U1，The minus earth of the second electric capacity C2.First resistance R1, the second resistance R2, the 3rd electric capacity C3, the first diode D1, the second diode D2, external circuit socket J2 form signal deteching circuit；External circuit socket J2 two ends are connected with ground connection GND terminal and detection SENSE terminal respectively, the negative pole of the first diode D1 accesses 4 feet of voltage transformation chip U1, the positive pole of the first diode D1 accesses the negative pole of the second diode D2, the plus earth of the second diode D2, 4 feet of voltage transformation chip U1 are accessed in one end of first resistance R1, the other end of the first resistance R1 accesses the positive pole of the 3rd electric capacity C3, the minus earth of the 3rd electric capacity C3, the negative pole of the second diode D2 is accessed in one end of second resistance R2, the positive pole of the 3rd electric capacity C3 is accessed in second another for resistance R2 one end, the two ends of external circuit socket J2 connect the negative pole of the second diode D2 and the positive pole of the second diode D2 respectively.3rd resistance R3, the 4th resistance R4, the 3rd diode D3, the 4th diode D4, the first audion T1, the second audion T2 and relay R L1 form signal transfer circuit；The positive pole parallel connection of the 3rd resistance R3 and the three diode D3 accesses 4 feet of voltage transformation chip U1, the other end of the 3rd resistance R3 accesses the emitter stage of the second audion T2, the base stage of the second audion T2 accesses the positive pole of the 3rd electric capacity C3 in signal deteching circuit, the grounded collector of the second audion T2, the input of the negative pole cut-in relay RL1 of the 3rd diode D3, another input of relay R L1 accesses the first audion T1 colelctor electrode, first audion T1 grounded emitter, the positive pole accessing the 4th diode D4 in parallel and the 4th resistance R4 in first audion T1 base stage, the negative pole of the 4th diode D4 accesses the emitter stage of the second audion T2, the other end ground connection of the 4th resistance R4.Relay R L1 controls the connecting terminal block J3 of relay R L1, and 1,2,3 feet are connected with COM, NC, NO terminal of relay R L1 respectively.
The operation principle of foregoing circuit is as described below:
Supply socket J1 is that DC24V power supply is powered, and chip LM2576 produces 12V voltage.When winch 4 steel wire tensioning, not with contact bar contact time, external circuit socket J2 two ends resistance is more than 0.8k (or open circuit), second audion T2 base voltage is higher, second audion T2 is not turned on, thus the first audion T1 base voltage is higher, the first audion T1 conducting, relay R L1 obtains electric；When winch 4 steel wire rope looseness, with when contacting bar contact, external circuit socket J2 two ends resistance is lower than 0.8k (or short circuit), second audion T2 base voltage is relatively low, and the second audion T2 conducting, thus the first audion T1 base stage is 0, first audion T1 is not turned on, relay R L1 dead electricity.
Claims (6)
1. a steel wire rope looseness detection sensor device, including electrical appliance kit (1), contact bar (4), insulating supporting (5) and slack rope testing circuit, it is characterised in that
Described contact bar (4) is arranged in the ground base of the side of winch (3) folding and unfolding steel wire rope by insulating supporting (5), contact bar (4) is positioned at the lower section of steel wire rope, contact bar (4) material is conductive metal material
The circuit board of described slack rope testing circuit is arranged in described electrical appliance kit (1), and whether slack rope testing circuit is used for detecting steel wire rope loose and touch contact bar (4),
Described steel wire rope is electrically connected with ground connection (GND) terminal of slack rope testing circuit by winch (3) vehicle frame and the wire that is connected on winch (3) vehicle frame, and described contact bar (4) is electrically connected with detection (SENSE) terminal of slack rope testing circuit by wire.
null2. a kind of steel wire rope looseness detection sensor device as claimed in claim 1，It is characterized in that，Described contact bar (4) includes proximal contact bar、Distal contact bar、Swivel mount and location screw，Described proximal contact bar and distal contact bar are fixed on the two ends of the rotating shaft of swivel mount，Proximal contact bar is parallel with the rotation axis of swivel mount with distal contact bar，The distance of the proximal contact bar rotation axis from swivel mount is less than the distance of the distal contact bar rotation axis from swivel mount，Described swivel mount is arranged on insulating supporting (5) by hinge，Described location screw is positioned on the circumference outside swivel mount rotating shaft，Insulating supporting (5) has and multiple positioning screw holes of location screw fit，The even cloth of multiple positioning screw holes is on the circumference of diameter same with installing location circumferential screw，Location screw can screw in positioning screw hole makes swivel mount maintain static.
3. a kind of steel wire rope looseness detection sensor device as claimed in claim 1, it is characterized in that, described slack rope testing circuit includes power converting circuit, signal deteching circuit and signal transfer circuit, described power converting circuit is for passing through conversion by external power source, stably become the power supply needed for signal deteching circuit, whether the resistance that described signal deteching circuit is used for detecting between ground connection (GND) terminal and detection (SENSE) terminal is more than 0.8k, then illustrate that if greater than 0.8k steel wire rope does not have and contacts bar (4) touching, otherwise then illustrate steel wire rope loose and touch with contacting bar (4), described signal transfer circuit is for becoming the action of relay by the change transitions of electric current in signal deteching circuit.
null4. a kind of steel wire rope looseness detection sensor device as claimed in claim 3，It is characterized in that，Described power converting circuit includes supply socket (J1)、Grounding device (J4)、Fuse (F1)、Voltage transformation chip (U1)、Inductance (L1)、First electric capacity (C1)、Second electric capacity (C2)、5th resistance (R5)、5th diode (D5) and light emitting diode (D6)，The LM2576 that model is National Semiconductor of described voltage transformation chip (U1)，Fuse (F1) accesses supply socket (J1) positive pole，The minus earth of supply socket (J1)，5th resistance (R5)、After the positive pole of the first electric capacity (C1) access in parallel with 1 foot of voltage transformation chip (U1) fuse (F1)，The other end of the 5th resistance (R5) accesses the positive pole of light emitting diode (D6)，The minus earth of light emitting diode (D6)，First electric capacity (C1) minus earth，3 feet of voltage transformation chip (U1) and 5 foot earths，4 feet of voltage transformation chip (U1) draw the positive pole of 12V power supply，Access inductance (L1) in parallel and the 5th diode (D5) on 2 feet，The negative pole of the 5th diode (D5) accesses 2 feet，The plus earth of the 5th diode (D5)，The other end of inductance (L1) accesses 4 feet of voltage transformation chip (U1)，The positive pole of the second electric capacity (C2) accesses 4 feet of voltage transformation chip (U1)，The minus earth of the second electric capacity (C2).
null5. a kind of steel wire rope looseness detection sensor device as claimed in claim 4，It is characterized in that，Described signal deteching circuit includes external circuit socket (J2)、First resistance (R1)、Second resistance (R2)、3rd electric capacity (C3)、First diode (D1) and the second diode (D2)，External circuit socket (J2) two ends are connected with ground connection (GND) terminal and detection (SENSE) terminal respectively，One end ground connection that external circuit socket (J2) is connected with ground connection (GND) terminal，The negative pole of the first diode (D1) accesses 4 feet of voltage transformation chip (U1)，The positive pole of the first diode (D1) accesses the negative pole of the second diode (D2)，The plus earth of the second diode (D2)，4 feet of voltage transformation chip (U1) are accessed in one end of first resistance (R1)，The other end of the first resistance (R1) accesses the positive pole of the 3rd electric capacity (C3)，The minus earth of the 3rd electric capacity (C3)，The negative pole of the second diode (D2) is accessed in one end of second resistance (R2)，The positive pole of one end access the 3rd electric capacity (C3) that the second resistance (R2) is another，One end that external circuit socket (J2) is connected with detection (SENSE) terminal is connected with the negative pole of the second diode (D2).
6. a kind of steel wire rope looseness detection sensor device as claimed in claim 5, it is characterized in that, described signal transfer circuit includes the 3rd resistance (R3), the 4th resistance (R4), the 3rd diode (D3), the 4th diode (D4), the first audion (T1), the second audion (T2) and relay (RL1)；null3rd resistance (R3) 4 feet that access voltage transformation chip (U1) in parallel with the positive pole of the 3rd diode (D3)，The other end of the 3rd resistance (R3) accesses the emitter stage of the second audion (T2)，The base stage of the second audion (T2) accesses the positive pole of the 3rd electric capacity (C3) in signal deteching circuit，The grounded collector of the second audion (T2)，The input of the negative pole cut-in relay (RL1) of the 3rd diode (D3)，Another input of relay (RL1) accesses the first audion (T1) colelctor electrode，First audion (T1) grounded emitter，The positive pole accessing the 4th diode (D4) in parallel and the 4th resistance (R4) in first audion (T1) base stage，The negative pole of the 4th diode (D4) accesses the emitter stage of the second audion (T2)，The other end ground connection of the 4th resistance (R4).
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105785204A true CN105785204A (en) | 2016-07-20 |
| CN105785204B CN105785204B (en) | 2018-10-30 |
Family
ID=56379769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610318107.XA Active CN105785204B (en) | 2016-05-13 | 2016-05-13 | A kind of steel wire rope looseness detection sensor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105785204B (en) |
Citations (6)
| 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 |
-
2016
- 2016-05-13 CN CN201610318107.XA patent/CN105785204B/en active Active
Patent Citations (6)
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 何映树: "《LM2576系列开关稳压器》", 《电子报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105785204B (en) | 2018-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108390167B (en) | Electrical cabinet grounding device with real-time grounding state detection and alarm functions | |
| CN212058652U (en) | Power transformer vibration detection device | |
| CN105785204A (en) | Steel wire rope looseness detection sensor device | |
| CN207688814U (en) | A kind of detector and its system of part of appliance wear-thickness | |
| CN103760477A (en) | Withstand voltage test mechanism | |
| CN202711993U (en) | Switch housing | |
| CN208705427U (en) | A kind of arc fault detection device of photovoltaic DC-to-AC converter | |
| CN203760816U (en) | Center rotation collector | |
| CN211237095U (en) | Line fault alarm device | |
| CN206292367U (en) | A kind of breaker monitors sensor on-line | |
| CN202583391U (en) | Transmission line grounding fault detection instrument | |
| CN203732676U (en) | Withstand voltage testing mechanism | |
| CN203275498U (en) | Current sensor module of electric automobile | |
| CN203912409U (en) | Waterproof seal box used for online monitoring of high-voltage electric equipment | |
| CN205355603U (en) | Movable overhauls power supply unit | |
| CN201909820U (en) | Fast detecting device of electric cabinet | |
| CN201242558Y (en) | Electric-theft protection alarm indication device for single-phase electric energy meter | |
| CN201017757Y (en) | Decomposing prevention circuit of transformer device | |
| CN203630013U (en) | Dust detector probe with connection sleeve | |
| CN203871140U (en) | Line reactor for metro vehicle | |
| CN214200404U (en) | Strain clamp solar wireless temperature sensor | |
| CN205430035U (en) | High frequency electric power communication switching power supply cabinet | |
| CN205565293U (en) | Special lightning rod of power equipment | |
| CN202583336U (en) | Transformer end screen grounding detection device | |
| CN203299243U (en) | Electric meter box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |