CN113948935A - Wire connection intelligent hydraulic machine based on contact resistance - Google Patents
Wire connection intelligent hydraulic machine based on contact resistance Download PDFInfo
- Publication number
- CN113948935A CN113948935A CN202111199517.4A CN202111199517A CN113948935A CN 113948935 A CN113948935 A CN 113948935A CN 202111199517 A CN202111199517 A CN 202111199517A CN 113948935 A CN113948935 A CN 113948935A
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- Prior art keywords
- crimping
- measuring
- module
- contact resistance
- wire
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- 238000002788 crimping Methods 0.000 claims abstract description 91
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/048—Crimping apparatus or processes
Abstract
The intelligent hydraulic press for conducting wire connection based on the contact resistance comprises a control device, a power device, a compression joint device and a measuring device; the control device is connected with the power device, the power device is connected with the crimping device, and the measuring device is connected with the control device; the power device is used for providing power for the wire compression joint; the crimping device is used for conducting wire crimping operation; and the measuring device is used for measuring the resistance of the wire crimping position and the distance between the opposite sides of the cross section of the wire in the crimping process in real time and transmitting data to the control device. After the hydraulic press completes the crimping of the splicing sleeve, the splicing sleeve meets the requirement of opposite sides in the specification, and the resistance is uniformly distributed, so that the crimping quality and accuracy of the splicing sleeve are improved, and the crimping error caused by manual operation non-specification is reduced.
Description
Technical Field
The invention relates to a hydraulic press for crimping a transmission conductor, in particular to an intelligent hydraulic press for connecting a conductor based on contact resistance.
Background
The overhead transmission line is generally connected with a ground wire and a jumper wire by adopting splicing fittings such as splicing pipes and the like. In the operation process of the overhead transmission line, the splicing sleeve not only bears all tension of the lead, but also plays a role in overcurrent. The line accident analysis shows that the accident is mostly caused by the fact that the crimping operation does not accord with relevant regulations. The quality level of the spliced tube becomes an important factor for measuring the safe operation of the power grid.
The conventional crimping method is hydraulic, and crimping is performed by trained operators according to the procedures in the specification (SDJ 226-87 hydraulic construction process rules for overhead power transmission line conductors and lightning conductors). Due to the uneven level of operators and the influence of human factors such as construction experience, construction habits, responsibility and the like, the uniform crimping quality is difficult to ensure in the actual operation. Therefore, in order to improve the crimping quality of the splicing sleeve, it is necessary to provide a more intelligent wire splicing device.
The common problems of manual crimping are: firstly, during crimping, a splicing sleeve is held by a worker, the flexibility of the body of the spliced sleeve after crimping is not up to the standard due to manual instability, and the flexibility is not more than 2% according to the acceptance specification; secondly, the contact resistance of the splicing sleeve is uneven in size, the main reason is that manual crimping cannot control the crimping accuracy, and the same crimping effect cannot be guaranteed every time, because a manual method is continued for a period of time under a certain pressure intensity and is mostly determined empirically. If the contact resistance at a certain position is too large, when the circuit is in a high-load operation condition, local heating and too high temperature can be caused to damage the lead, so that the connection strength is reduced. In view of the above, it is necessary to provide a wire connection intelligent hydraulic machine based on contact resistance.
Disclosure of Invention
The invention provides a wire connection intelligent hydraulic machine based on contact resistance, which controls the connection pressure and speed of the hydraulic machine by monitoring the opposite side distance of the wire section and the resistance of a connection tube in real time.
The technical scheme adopted by the invention is as follows:
wire continuation intelligent hydraulic press based on contact resistance includes:
the device comprises a control device, a power device, a compression joint device and a measuring device;
the control device is connected with the power device, the power device is connected with the crimping device, and the measuring device is connected with the control device;
the power device is used for providing power for the wire compression joint;
the crimping device is used for conducting wire crimping operation;
and the measuring device is used for measuring the resistance of the wire crimping position and the distance between the opposite sides of the cross section of the wire in the crimping process in real time and transmitting data to the control device.
The control device comprises a PLC control system, a communication module and a measurement host;
the PLC control system is used for controlling the operation of the hydraulic machine;
the communication module is used for connecting external electronic equipment and controlling the hydraulic machine after connection;
and the measuring host is used for acquiring and processing data of contact resistance at the connecting pipe crimping position and the wire section opposite side distance L0 measured by the measuring device.
The power device comprises a hydraulic oil tank and a hydraulic motor, and the hydraulic oil tank is connected with the hydraulic motor.
The crimping device comprises a supporting mechanism and a crimping module; the supporting mechanisms are used for fixing the splicing sleeve in the crimping process, are installed on the frame in pairs and are symmetrically located on the two sides of the base respectively.
The supporting mechanism comprises a limiting frame, a bottom plate, a longitudinal rod and a transverse rod; the crimping module comprises an upper die and a lower die;
the limiting frames are movably arranged on the bottom plate, and the distance between the limiting frames can be adjusted to be the diameter of the wire, so that the longitudinal center line of the crimping module is aligned with the center line of the wire; the longitudinal rod and the transverse rod are telescopic rods, so that the bottom plate and the lower pressing die are kept at the same height. The measuring device comprises a direct current resistance measuring module, the direct current resistance measuring module measures the contact resistance of the splicing sleeve at the compression joint by adopting a Kelvin bridge method, and the direct current resistance measuring device comprises a current electrode and a voltage electrode; the current electrodes and the voltage electrodes are installed on the side edges of the frame in pairs and are symmetrically located on two sides of the crimping module respectively.
The measuring device comprises an electromagnetic distance measuring module, the electromagnetic distance measuring module is used for measuring the distance between opposite sides of the crimping position of the splicing sleeve and is installed on the side edge of the frame in pair, and in the crimping process, the electromagnetic distance measuring module measures the change of the distance L0 between the opposite sides of the section of the wire and transmits data to the measuring host.
The invention relates to a wire connection intelligent hydraulic machine based on contact resistance, which has the following technical effects:
through carrying out real-time supervision to wire cross-section opposite side distance L0 and the resistance of splicing sleeve, come the crimping pressure and the speed of control hydraulic press, on the one hand, improved the crimping effect of splicing sleeve, solved the problem that the crimping precision that exists in the artifical crimping is not high leads to splicing sleeve resistance inhomogeneous betterly. On the other hand, the problem that the bending degree is too large easily caused by manually holding the splicing sleeve by hands is solved, the bending degree of the splicing sleeve is ensured to be within an allowable range, and errors caused by human factors in the crimping process are reduced.
Drawings
FIG. 1 is a block diagram of the working principle of the intelligent hydraulic machine of the present invention.
FIG. 2 is a schematic structural diagram of the intelligent hydraulic machine of the present invention.
FIG. 3 is a schematic structural diagram of a crimping device of the intelligent hydraulic machine.
FIG. 4 is a schematic diagram of the DC resistance measurement module structure of the intelligent hydraulic machine of the present invention.
FIG. 5 is a schematic structural diagram of an electromagnetic ranging module of the intelligent hydraulic machine of the present invention;
wherein: l0-the distance between the opposite sides of the wire section, M-the wire section and the splicing sleeve section.
Detailed Description
As shown in fig. 1 to 5, the intelligent hydraulic press for wire connection based on contact resistance comprises a control device 1, a power device 2, a crimping device 3 and a measuring device 4.
The control device 1 is connected with the power device 2, the power device 2 is connected with the crimping device 3, and the measuring device 4 is connected with the control device 1;
the power device 2 is used for providing power for the wire compression joint;
the crimping device 3 is used for conducting wire crimping operation;
and the measuring device 4 measures the resistance of the wire crimping position and the wire section-to-side distance L0 in real time in the crimping process and transmits data to the control device 1.
The control device 1 comprises a PLC control system 11, a communication module 12 and a measurement host 13;
the PLC control system 11 is used for controlling the operation of the hydraulic machine;
the communication module 12 comprises functions of Bluetooth, WiFi and the like, is used for connecting external electronic equipment, and can control the hydraulic machine after being connected.
And the measurement host 13 is used for collecting and processing data of contact resistance at the joint of the splicing sleeve and the distance L0 between the opposite sides of the section of the lead at the joint of the splicing sleeve, which are measured by the measurement device 4.
The control device 1 includes a liquid crystal display ("lcd") panel G043FTN01.0, which is a 4.3 inch industrial lcd panel.
The communication module 12 employs an OBDII-180 bluetooth assembly connector WG-CR 18116018.
The measurement host 13 includes a TSSOP-28ADC data acquisition analog-to-digital converter.
The power device 2 comprises a hydraulic oil tank 21 and a hydraulic motor 22, wherein the hydraulic oil tank 21 is connected with the hydraulic motor 22. The hydraulic oil tank 21 is connected with the crimping module 32 in the crimping device 3 through a high-pressure rubber pipe to provide power for the crimping module 32.
As shown in fig. 3, the crimping apparatus 3 includes a support mechanism 31, a crimping module 32; supporting mechanism 31 is used for fixing the splicing sleeve at crimping in-process, replaces the hand splicing sleeve of staff, reduces the problem that the splicing sleeve body crookedness is not up to standard that leads to by artifical instability. The supporting mechanisms 31 are installed on the frame 5 in pairs and are respectively symmetrically located at two sides of the base 6.
The supporting mechanism 31 comprises a limiting frame 310, a bottom plate 311, a longitudinal rod 312 and a transverse rod 313; the crimping module 32 includes an upper die 321 and a lower die 322. The lower pressing die 322 is embedded on the base 6; the upper pressing die 321 is embedded on the frame 5 and is positioned right above the lower pressing die 321;
a limiting frame 310, a bottom plate 311, a longitudinal rod 312 and a transverse rod 313; one end of the transverse rod 313 is fixed on the frame 5 and is positioned below the base 6; one end of the longitudinal rod 312 is vertically and fixedly connected with the other end of the transverse rod 313; the other end of the longitudinal rod 312 is fixedly connected with the bottom plate 311; the longitudinal rod 312 and the transverse rod 313 are both steel telescopic rods; the limiting frame 310 is movably arranged on the bottom plate 311; the limiting frame 310 and the bottom plate 311 are both made of steel; in order to facilitate the wire to pass through the crimping module 32 and better ensure the stability of the wire during the crimping process, the longitudinal rods 312 and the transverse rods 313 are adjusted in length so that the bottom plate 311 is the same in height as the lower die 322, and the limiting frame 310 is adjusted in diameter width of the wire.
The limiting frames 310 are movably mounted on the bottom plate 311, and the distance between the limiting frames 310 can be adjusted to the diameter of the wire, so that the longitudinal center line of the crimping position of the crimping module 32 is level with the center line of the wire, and the limiting frames are used for limiting the horizontal bending of the splicing sleeve in the crimping process.
The longitudinal rod 312 and the transverse rod 313 are telescopic rods, so that the bottom plate 311 and the lower pressing die 322 keep the same height, and the connecting pipe is limited from being vertically bent in the crimping process.
The upper and lower modules are made of solid chrome steel, the shape of the die can be regular hexagon and the like, and the hydraulic oil tank 21 is connected with the crimping module 32 in the crimping device 3 through a high-pressure rubber pipe to provide power for the crimping module.
As shown in fig. 4, the measuring device 4 includes a direct current resistance measuring module 41, the direct current resistance measuring module 41 measures the contact resistance of the splicing sleeve at the crimping position by using a kelvin bridge method, and the direct current resistance measuring module 41 includes a current electrode 411 and a voltage electrode 412; the current electrode 411 and the voltage electrode 412 are installed on the side of the frame 5 in pairs, and are respectively symmetrically located on two sides of the crimping module 32. The direct current resistance measuring module 41 adopts a Shanghai Zhengyang QJ84A direct current low resistance tester.
As shown in fig. 5, the measuring device 4 includes an electromagnetic distance measuring module 42, the electromagnetic distance measuring module 42 is used for measuring the distance between opposite sides of the splicing sleeve, and is installed on the side of the frame 5 in pairs, the crimping module 32 is a regular hexagon, and the initial cross-sections of the wire and the splicing sleeve are circular. During the crimping process, the electromagnetic ranging module 42 measures the change of the line cross-section-to-side distance L0 and transmits data to the measurement host 13. The electromagnetic ranging module 42 employs a ranging sensor ORA1L 02.
Preparation work before crimping work: after a hydraulic press no-load experiment, lead painting, splicing sleeve cleaning and pipe penetration are completed, the control device 1 sets a reference value (maximum allowable value) of the distance L0 between the opposite sides of the compression joint of the splicing sleeve as S, and the reference value is set mainly according to SDJ 226-87 hydraulic construction process rules of overhead power transmission line leads and lightning conductors; and setting a resistance reference value R, wherein the set resistance reference value R is smaller than the wire resistance. And (3) completing the crimping condition:
1) the distance between the opposite sides of the splicing sleeve crimping position is smaller than S;
2) the contact resistance of the splicing sleeve crimping position is equal to R or the error does not exceed certain precision, and the contact resistance can be set by the control device 1).
Both of the above conditions must be satisfied simultaneously.
After the intelligent hydraulic machine is used for completing the crimping of the splicing sleeve, the splicing sleeve meets the requirement of opposite sides in the specification, and the resistance is uniformly distributed, so that the crimping quality and accuracy are improved, and the crimping error caused by manual operation non-specification is reduced.
Taking the hydraulic operation of crimping the aluminum splicing sleeve in the steel-cored aluminum stranded wire (LGJ-240/40) and the straight splicing sleeve (JYD-240/40) as an example:
after the preparation work (idle test of the hydraulic press, drawing and printing of the wire, cleaning of the splicing sleeve and pipe penetration) before the crimping operation and the steel pipe splicing work are finished, the control device 1 sets the reference value (maximum allowable value) of the distance between the opposite sides of the aluminum splicing sleeve to be equal to S of 31.34mm, and sets the reference value R of the resistance to be equal to 0.1 omega and less than the resistance of the wire of 0.131 omega. After the aluminum splicing sleeve is fixed by the fixing device, the control device 1 controls the hydraulic machine to start to operate, and the pressure value of the hydraulic machine is set to be 70 MPa. And in the crimping process, within 3-5s, the opposite side distance meets the requirement, the connection resistor does not reach the reference value of the resistor, the crimping is continued, and the crimping is stopped until the actual contact resistance value is equal to the reference value of the resistor. After the whole splicing sleeve is crimped, the splicing sleeve meets the requirement of opposite sides in the specification and the resistance is uniformly distributed.
Claims (7)
1. Wire connection intelligent hydraulic press based on contact resistance is characterized by comprising:
the device comprises a control device (1), a power device (2), a crimping device (3) and a measuring device (4);
the control device (1) is connected with the power device (2), the power device (2) is connected with the crimping device (3), and the measuring device (4) is connected with the control device (1);
the power device (2) is used for providing power for the wire compression joint;
the crimping device (3) is used for conducting wire crimping operation;
and the measuring device (4) is used for measuring the resistance of the wire crimping position and the distance between the opposite sides of the cross section of the wire in the crimping process in real time and transmitting data to the control device (1).
2. The intelligent hydraulic machine for connecting wires based on contact resistance as claimed in claim 1, wherein: the control device (1) comprises a PLC control system (11), a communication module (12) and a measurement host (13);
the PLC control system (11) is used for controlling the operation of the hydraulic machine;
the communication module (12) is used for connecting external electronic equipment and can control the hydraulic machine after being connected;
and the measuring host (13) is used for acquiring and processing data of contact resistance at the joint of the splicing sleeve and the distance L0 between the cross section of the lead at the joint of the splicing sleeve measured by the measuring device (4).
3. The intelligent hydraulic machine for connecting wires based on contact resistance as claimed in claim 1, wherein: the power device (2) comprises a hydraulic oil tank (21) and a hydraulic motor (22), and the hydraulic oil tank (21) is connected with the hydraulic motor (22).
4. The intelligent hydraulic machine for connecting wires based on contact resistance as claimed in claim 3, wherein: the crimping device (3) comprises a supporting mechanism (31) and a crimping module (32); the supporting mechanisms (31) are used for fixing the splicing sleeve in the crimping process, and the supporting mechanisms (31) are installed on the frame (5) in pairs and are symmetrically located on two sides of the base 6 respectively.
5. The intelligent hydraulic machine for connecting wires based on contact resistance as claimed in claim 4, wherein: the supporting mechanism (31) comprises a limiting frame (310), a bottom plate (311), a longitudinal rod (312) and a transverse rod (313); the crimping module (32) comprises an upper pressing die (321) and a lower pressing die (322);
the limiting frames (310) are movably arranged on the bottom plate (311), and the distance between the limiting frames (310) can be adjusted to be the diameter of the lead, so that the longitudinal center line of the crimping module (32) is level with the center line of the lead;
the longitudinal rod (312) and the transverse rod (313) are telescopic rods, so that the bottom plate (311) and the lower module (322) keep the same height.
6. The intelligent hydraulic machine for connecting wires based on contact resistance as claimed in claim 4, wherein: the measuring device (4) comprises a direct current resistance measuring module (41), the direct current resistance measuring module (41) measures the contact resistance of the splicing sleeve at the compression joint by adopting a Kelvin bridge method, and the direct current resistance measuring module (41) comprises a current electrode (411) and a voltage electrode (412); the current electrodes (411) and the voltage electrodes (412) are installed on the side edge of the frame (5) in pairs and are respectively and symmetrically located on two sides of the base (6).
7. The intelligent hydraulic machine for connecting wires based on contact resistance as claimed in claim 4, wherein: measuring device (4) are including electromagnetic ranging module (42), and electromagnetic ranging module (42) are used for measuring splicing sleeve crimping department opposite side distance size, and in pairs install frame (5) side, crimping in-process, electromagnetic ranging module (42) measure the change of wire cross-section opposite side distance L0 and with data transmission to measuring host computer (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111199517.4A CN113948935A (en) | 2021-10-14 | 2021-10-14 | Wire connection intelligent hydraulic machine based on contact resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111199517.4A CN113948935A (en) | 2021-10-14 | 2021-10-14 | Wire connection intelligent hydraulic machine based on contact resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113948935A true CN113948935A (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111199517.4A Pending CN113948935A (en) | 2021-10-14 | 2021-10-14 | Wire connection intelligent hydraulic machine based on contact resistance |
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| CN (1) | CN113948935A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0921836A (en) * | 1995-07-04 | 1997-01-21 | Sumitomo Wiring Syst Ltd | Measuring method for contact resistance and evaluation method for caulking press bonded structure |
| US20130219680A1 (en) * | 2012-02-29 | 2013-08-29 | GM Global Technology Operations LLC | Methods and systems for measuring crimp quality |
| CN106099607A (en) * | 2016-08-02 | 2016-11-09 | 吉林省送变电工程公司 | A kind of intelligence crimping platform being applicable to high voltage electricity transmission conductive wire |
| US20170102341A1 (en) * | 2014-06-11 | 2017-04-13 | Pkc Wiring Systems Oy | Sensor arrangement, measuring device and measuring method |
| CN107086505A (en) * | 2017-04-28 | 2017-08-22 | 国网山东省电力公司电力科学研究院 | A kind of extra-high voltage electric transmission and transformation wire intelligently crimps system and method |
| CN108872707A (en) * | 2018-04-28 | 2018-11-23 | 国网山东省电力公司电力科学研究院 | A kind of electric wire and cable conductor D.C. resistance aided measurement device and measurement method |
| CN108923218A (en) * | 2018-06-21 | 2018-11-30 | 广东电网有限责任公司 | Compression bonding method |
| CN112421335A (en) * | 2020-10-21 | 2021-02-26 | 河南兰兴电力机械有限公司 | Automatic crimping machine for power transmission and transformation line wires and using method thereof |
| CN113258399A (en) * | 2021-07-14 | 2021-08-13 | 南方电网科学研究院有限责任公司 | Wire crimping device and method |
-
2021
- 2021-10-14 CN CN202111199517.4A patent/CN113948935A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0921836A (en) * | 1995-07-04 | 1997-01-21 | Sumitomo Wiring Syst Ltd | Measuring method for contact resistance and evaluation method for caulking press bonded structure |
| US20130219680A1 (en) * | 2012-02-29 | 2013-08-29 | GM Global Technology Operations LLC | Methods and systems for measuring crimp quality |
| US20170102341A1 (en) * | 2014-06-11 | 2017-04-13 | Pkc Wiring Systems Oy | Sensor arrangement, measuring device and measuring method |
| CN106099607A (en) * | 2016-08-02 | 2016-11-09 | 吉林省送变电工程公司 | A kind of intelligence crimping platform being applicable to high voltage electricity transmission conductive wire |
| CN107086505A (en) * | 2017-04-28 | 2017-08-22 | 国网山东省电力公司电力科学研究院 | A kind of extra-high voltage electric transmission and transformation wire intelligently crimps system and method |
| CN108872707A (en) * | 2018-04-28 | 2018-11-23 | 国网山东省电力公司电力科学研究院 | A kind of electric wire and cable conductor D.C. resistance aided measurement device and measurement method |
| CN108923218A (en) * | 2018-06-21 | 2018-11-30 | 广东电网有限责任公司 | Compression bonding method |
| CN112421335A (en) * | 2020-10-21 | 2021-02-26 | 河南兰兴电力机械有限公司 | Automatic crimping machine for power transmission and transformation line wires and using method thereof |
| CN113258399A (en) * | 2021-07-14 | 2021-08-13 | 南方电网科学研究院有限责任公司 | Wire crimping device and method |
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