CN111302159A - Movable protection debugging folding leg - Google Patents
Movable protection debugging folding leg Download PDFInfo
- Publication number
- CN111302159A CN111302159A CN202010068434.0A CN202010068434A CN111302159A CN 111302159 A CN111302159 A CN 111302159A CN 202010068434 A CN202010068434 A CN 202010068434A CN 111302159 A CN111302159 A CN 111302159A
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- Prior art keywords
- winding
- unwinding
- rod
- baffle disc
- bearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
Abstract
The invention belongs to the technical field of electric power, and particularly relates to a movable protection and debugging folding frame. The movable protection and debugging folding frame is characterized by comprising an underframe, a universal wheel, a hinge, a handle frame, a first winding and unwinding switching wire device, a second winding and unwinding switching wire device, a third winding and unwinding switching wire device, a fourth winding and unwinding switching wire device and a grounding winding and unwinding switching wire device; universal wheels are respectively arranged at the four corners of the bottom surface of the bottom frame; the lower end part of the handle frame is hinged with the front end part of the bottom frame by a hinge; the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are sequentially arranged from left to right, and the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are respectively arranged at the upper part of the handle frame; the grounding take-up and pay-off patch cord device is arranged at the rear part of the bottom surface of the bottom frame. The rack has the characteristics of convenient wiring and time saving.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a movable protection and debugging folding frame.
Background
The debugging work of the relay protection device is that relay protection personnel input analog voltage and current to the device or the electrical equipment by using a debugging instrument according to professional regulations and requirements, and then judge whether protection can act correctly by using an indoor device through acquiring electrical parameters, so that faults are removed in time, and the economic loss of a power grid is effectively reduced. Because the debugging work is required to be carried out under the condition that the equipment is powered off, the efficiency of the work influences the power transmission time and influences the life and production of users.
Current transformer check-up work, current transformer passes through the transformation ratio with the electric current of once side and converts the secondary side electric current into promptly, in order to supply to observe and control and protection device to gather the use, carry out the polarity check-up after current transformer needs to be changed or carry out the electric current transformer secondary current return circuit in the open air and carry out the during operation, the protection personnel often utilize the protection debugging appearance to protect through open air current transformer terminal box department or outdoor terminal box department, measure three return circuit simulation addendum, in order to ensure to get into indoor electrical acquisition data and accord with the operating standard, thereby ensure that the definite value relates to and can not cause the protection maloperation when judging phase sequence and direction.
In order to improve the accuracy of the relay protection checking work, the technical specification of relay protection and safety automatic devices clearly stipulates that the installation or replacement of various current transformers at intervals of lines with voltage levels of 35kV and above needs to carry out the simulation checking of three loops of protection, measurement and measurement from a pile head junction box or an outdoor terminal box of the current transformer with the voltage level of 35kV and above, so that the precision of secondary data acquisition of a protection device and a measurement and control device is verified, meanwhile, the protection misoperation cannot be caused when the protection fixed value is judged for the phase sequence and the direction, and the checking of the secondary loops of the current transformers is an essential important working procedure of relay protection personnel. In the current transformer and voltage transformer selection and calculation regulation, when a relay protector performs a production test or a current transformer replacement operation, the phase sequence of a current A phase, a current B phase and a current C phase in protection, measurement and metering should be checked to determine the polarity of the current transformer. Polarity verification and whole group tests are carried out on all line interval replacement current transformers and production tests of 35kV bridgey substations and 110kV Zhujiawan substations, the work is analyzed, 35kV line polarity verification, phase sequence verification and whole group tests which are completed in nearly three months are randomly selected, the current wiring mode is found to be inconvenient, the phenomenon that wiring is easy to loose exists, the whole debugging and verifying process is carried out under the condition that equipment is powered off, therefore, the operation time and efficiency can influence a power transmission plan and the production and life of users.
As shown in fig. 1, a three-phase debugging field layout diagram of an outdoor 35kV and above current transformer. The application of the current special dosage test line is as follows: when a current transformer or a line phase sequence checking operation is replaced at an outdoor transformer substation line interval of 35kV or above, the precision of a protection device and a measurement device needs to be judged by adding the protection tester, and a four-core (yellow-A phase, green-B phase, red-C phase and black-N grounding electrode) test line is required in the process. Generally, the current special dosage test wires are divided into two types, the test wire which is commonly matched with a protection debugging instrument before 2017 is in a scattered bone winding type, and the length of the test wire is about 3 m. Because the use process often causes four cores to be stirred together, especially when voltage and current are respectively applied to the protection tester, the time for arranging the test wires is required to take several minutes, and the time is roughly divided into wiring of the tester before debugging, wire changing in the debugging process and wire winding after the debugging is finished.
The application of the relay protection debugging instrument comprises the following steps: the currently commonly used relay protection debugging instruments are divided into three types, which are respectively as follows according to manufacturers: an Onli tester, a pulse tester and a Luneng tester. The Bridgman tester is the most conventional instrument, and the software module has fewer integrated functions. The potential of charge tester, the test appearance of the functional unit of the Lu can be the present novel multi-functional tester, the integrated module is more, it is relatively intelligent. The high and vertical tester needs to be carried by people, and the weight of the box and the debugging instrument is about 5 kg. The orientation wheel is attached to the housing of the robust tester, and the weight of the housing and the debugger is about 20 kg. The case and commissioning apparatus of the pulse tester weigh approximately 21 kg.
Outdoor protection debugging and checking operation: according to the requirements of 'eighteen power grid major anti-accident measures' revision of national power grid limited company, referring to relevant clauses of 'preventing relay protection accidents', secondary loops of current transformer protection, measurement and metering windings are respectively introduced into a main control room device, and the capacity, transformation ratio and characteristics of the current transformer are reasonably selected according to the short-circuit capacity of a system, so that the requirements of setting coordination and reliability of a protection device are met. Utilize protection debugging appearance to work a telephone switchboard on current transformer's secondary side pile head terminal box, carry out the dosage simulation to A looks, B looks, C phase current transformer protection, measurement cubic respectively, because single current test wire probably length need carry out two concatenations inadequately, concatenate the department and need do the electric leakage and handle, this outdoor dosage process needs 2 people at least to accomplish, in addition this in-process needs the indoor observer of master control to confirm that data record is correct later just can carry out next step.
Through statistics of phase sequence polarity verification work of the transformer substation on line interval major repair engineering, current transformer replacement and a current-voltage secondary circuit, 220kV line intervals, 110kV line intervals and 35kV line intervals are extracted respectively for data analysis. The sampling time is determined according to the daily work sequence of the group. According to statistical results, the time occupied by the check standard, the debugging technology and the whole set of tests in the single line interval test process of the voltage class of 35kV or above is objective and not easy to change, but the time consumed by the three steps of transferring, connecting and disconnecting of the protection debugging instrument accounts for 24% of the total debugging time, so that the three steps affect the efficiency of the protection debugging process.
The problems that time and labor are consumed for transferring a working place in the debugging process, and the time are consumed for wiring the test instrument and the current transformer, and wiring is inconvenient exist.
Disclosure of Invention
The invention aims to provide a movable protection and debugging folding frame which has the characteristics of convenience in wiring and time saving.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: the movable protection and debugging folding frame is characterized by comprising an underframe 1, a universal wheel 5, a hinge 6, a handle frame 7, a first take-up and pay-off switching wire device, a second take-up and pay-off switching wire device, a third take-up and pay-off switching wire device, a fourth take-up and pay-off switching wire device and a grounding take-up and pay-off switching wire device; universal wheels 5 are respectively arranged at the four corners of the bottom surface of the underframe 1; the lower end part of the handle frame 7 is hinged with the front end part of the bottom frame 1 through a hinge 6; the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are sequentially arranged from left to right, and the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are respectively arranged at the upper part of the handle frame 7; the grounding take-up and pay-off patch cord device is arranged at the rear part of the bottom surface of the underframe 1;
the first take-up and pay-off patch cord device comprises a bearing seat 14, a bearing 15, a left baffle disc 16, a first reel shaft 17 and a right baffle disc 18; the left end part and the right end part of the first reel shaft 17 are respectively provided with a bearing 15, the bearing 15 is arranged on the handle frame 7 through a bearing seat 14, the left part of the first reel shaft 17 is fixedly provided with a left baffle disc 16, the right part of the first reel shaft 17 is fixedly provided with a right baffle disc 18, and a wire winding and unwinding space is formed between the left baffle disc 16 and the right baffle disc 18; a phase external connection wire 10 is wound on a first winding shaft 17 of the wire winding and unwinding space;
the second take-up and pay-off switching line device comprises a bearing seat, a bearing, a left baffle disc, a second winding shaft and a right baffle disc; the left end part and the right end part of the second winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats, the left part of the second winding shaft is fixedly provided with a left baffle disc, the right part of the second winding shaft is fixedly provided with a right baffle disc, and a winding and unwinding space is formed between the left baffle disc and the right baffle disc; a B-phase external connecting wire 11 is wound on a second winding shaft of the wire winding and unwinding space;
the third reeling and unreeling patch cord device comprises a bearing seat, a bearing, a left baffle disc, a third winding shaft and a right baffle disc; the left end part and the right end part of the third winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats, the left part of the third winding shaft is fixedly provided with a left baffle disc, the right part of the third winding shaft is fixedly provided with a right baffle disc, and a winding and unwinding space is formed between the left baffle disc and the right baffle disc; c-phase external connecting wires 12 are wound on a third winding shaft of the wire winding and unwinding space;
the fourth reeling and unreeling patch cord device comprises a bearing seat, a bearing, a left baffle disc, a fourth winding shaft and a right baffle disc; the left end part and the right end part of the fourth winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats, the left part of the fourth winding shaft is fixedly provided with a left baffle disc, the right part of the fourth winding shaft is fixedly provided with a right baffle disc, and a winding and unwinding space is formed between the left baffle disc and the right baffle disc; an N grounding external connection wire 13 is wound on a fourth winding shaft of the wire winding and unwinding space;
the grounding take-up and pay-off patch cord device comprises a grounding wire winding shaft 3, a bearing seat and a bearing, wherein the bearing is respectively installed at the left end part and the right end part of the grounding wire winding shaft 3, the bearing is installed on the underframe 1 through the bearing seat, and an external grounding wire 2 is wound on the grounding wire winding shaft 3.
The handle frame 7 comprises a handle frame, a lower left-right connecting rod 8, an upper left-right connecting rod 9, a first up-down connecting rod 19, a second up-down connecting rod 20 and a third up-down connecting rod 21; the handle frame is formed by connecting an upper rod, a lower rod 23, a left rod and a right rod, an upper left-right connecting rod 9 is fixedly connected between the upper part of the left rod and the upper part of the right rod, and a lower left-right connecting rod 8 is fixedly connected between the lower part of the left rod and the lower part of the right rod; a first up-down connecting rod 19, a second up-down connecting rod 20 and a third up-down connecting rod 21 are fixedly connected between the upper rod and the upper left-right connecting rod 9, and the first up-down connecting rod 19, the second up-down connecting rod 20 and the third up-down connecting rod 21 are sequentially arranged from left to right.
The number of the hinges 6 is 2-10.
The underframe 1 comprises a underframe and a front-back connecting rod 4; the bottom frame is formed by connecting a front rod 22, a rear rod, a left rod and a right rod, and 1-10 front and rear connecting rods 4 are fixedly connected between the front rod 22 and the rear rod.
The invention has the beneficial effects that: the length of a tester cable and a tester grounding wire of the existing tester is generally not long enough, external wiring is needed, if the external wiring is not prepared in advance, the wiring is inconvenient, and the wiring is time-saving. The rack has the characteristics of convenient wiring and time saving. Mobility: multidirectional rotation, 1 people of staff need, it is convenient to remove. Can be folded and occupies small space in transportation. The operation time can be shortened by 22 min.
Drawings
Fig. 1 is a layout diagram of a three-phase debugging field of a current transformer of 35kV outdoor and above.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic view of the state of use of the present invention.
Reference numbers in the figures: 1-underframe, 2-external ground wire, 3-ground wire reel, 4-front and back connecting rod, 5-universal wheel, 6-hinge, 7-handle frame, 8-lower left and right connecting rod, 9-upper left and right connecting rod, 10-A external connecting wire, 11-B external connecting wire, 12-C external connecting wire, 13-N ground external connecting wire, 14-bearing seat, 15-bearing, 16-left baffle disc, 17-first reel shaft, 18-right baffle disc, 19-first upper and lower connecting rod, 20-second upper and lower connecting rod, 21-third upper and lower connecting rod, 22-front rod, 23-lower rod, 24-tester cable, 25-tester, 26-tester ground wire, 27-current transformer secondary side junction box (pile head) A phase, 28-phase B of a junction box (pile head) at the secondary side of the current transformer, and 29-phase C of the junction box (pile head) at the secondary side of the current transformer.
Detailed Description
As shown in fig. 2 and 3, the movable protection and debugging folding leg includes a chassis (or called chassis) 1, a universal wheel 5, a hinge 6, a handle frame 7, a first winding and unwinding switching wire device, a second winding and unwinding switching wire device, a third winding and unwinding switching wire device, a fourth winding and unwinding switching wire device, and a grounding winding and unwinding switching wire device; universal wheels 5 are respectively arranged at the four corners of the bottom surface of the underframe 1 (namely the movable protection and debugging folding frame can move); the lower end part of the handle frame 7 is hinged with the front end part of the underframe 1 through a hinge 6 (namely, the handle frame 7 can be folded towards the underframe 1); the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are sequentially arranged from left to right, and the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are respectively arranged at the upper part of the handle frame 7; the grounding take-up and pay-off patch cord device is arranged at the rear part of the bottom surface of the underframe 1;
the first take-up and pay-off patch cord device comprises a bearing seat 14, a bearing 15, a left baffle disc 16, a first reel shaft 17 and a right baffle disc 18; the left end part and the right end part of the first reel shaft 17 are respectively provided with a bearing 15, the bearing 15 is arranged on the handle frame 7 through a bearing seat 14 (namely, the first reel shaft 17 can rotate), the left part of the first reel shaft 17 is fixedly provided with a left baffle disc 16, the right part of the first reel shaft 17 is fixedly provided with a right baffle disc 18, and a wire winding and unwinding space is formed between the left baffle disc 16 and the right baffle disc 18; a phase external connection wire 10 is wound on a first winding shaft 17 of the wire winding and unwinding space;
the second take-up and pay-off switching line device comprises a bearing seat, a bearing, a left baffle disc, a second winding shaft and a right baffle disc; the left end part and the right end part of the second winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats (namely the second winding shaft can rotate), the left part of the second winding shaft is fixedly provided with a left baffle disc, the right part of the second winding shaft is fixedly provided with a right baffle disc, and a wire winding and unwinding space is formed between the left baffle disc and the right baffle disc; a B-phase external connecting wire 11 is wound on a second winding shaft of the wire winding and unwinding space;
the third reeling and unreeling patch cord device comprises a bearing seat, a bearing, a left baffle disc, a third winding shaft and a right baffle disc; the left end part and the right end part of the third winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats (namely the third winding shaft can rotate), the left part of the third winding shaft is fixedly provided with a left baffle disc, the right part of the third winding shaft is fixedly provided with a right baffle disc, and a wire winding and unwinding space is formed between the left baffle disc and the right baffle disc; c-phase external connecting wires 12 are wound on a third winding shaft of the wire winding and unwinding space;
the fourth reeling and unreeling patch cord device comprises a bearing seat, a bearing, a left baffle disc, a fourth winding shaft and a right baffle disc; the left end part and the right end part of the fourth winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats (namely the fourth winding shaft can rotate), the left part of the fourth winding shaft is fixedly provided with a left baffle disc, the right part of the fourth winding shaft is fixedly provided with a right baffle disc, and a wire winding and unwinding space is formed between the left baffle disc and the right baffle disc; an N grounding external connection wire 13 is wound on a fourth winding shaft of the wire winding and unwinding space;
the grounding take-up and pay-off junction line device comprises a grounding wire winding shaft 3, a bearing seat and a bearing, wherein the bearing is respectively installed at the left end part and the right end part of the grounding wire winding shaft 3, the bearing is installed on the underframe 1 through the bearing seat (namely the grounding wire winding shaft 3 can rotate), and the grounding wire winding shaft 3 is wound with an external grounding wire 2.
The handle frame 7 comprises a handle frame, a lower left-right connecting rod 8, an upper left-right connecting rod 9, a first up-down connecting rod 19, a second up-down connecting rod 20 and a third up-down connecting rod 21; the handle frame is formed by connecting an upper rod, a lower rod 23, a left rod and a right rod (the upper end of the left rod is fixedly connected with the left end of the upper rod, the lower end of the left rod is fixedly connected with the left end of the lower rod, the upper end of the right rod is fixedly connected with the right end of the upper rod, and the lower end of the right rod is fixedly connected with the right end of the lower rod; a first up-down connecting rod 19, a second up-down connecting rod 20 and a third up-down connecting rod 21 are fixedly connected (for example, welded) between the upper rod and the upper left-right connecting rod 9, and the first up-down connecting rod 19, the second up-down connecting rod 20 and the third up-down connecting rod 21 are sequentially arranged from left to right.
The number of the hinges 6 is 2-10 (2 is adopted in the embodiment).
The underframe 1 comprises a underframe and a front-back connecting rod 4; the bottom frame is formed by connecting a front rod 22, a rear rod, a left rod and a right rod (the left side in fig. 2 is left, the right side is right, the left side in fig. 3 is front, and the right side is rear, the front end of the left rod is fixedly connected with the left end of the front rod 22, the rear end of the left rod is fixedly connected with the left end of the rear rod, the front end of the right rod is fixedly connected with the right end of the front rod 22, the rear end of the right rod is fixedly connected with the right end of the rear rod), and 1-10 front-back connecting rods 4 are fixedly connected between the front rod 22 and the rear rod (2 are adopted in the embodiment).
The left bearing seat 14 of the first take-up and pay-off switching wire device is fixed on the left rod, the right bearing seat of the first take-up and pay-off switching wire device and the left bearing seat of the second take-up and pay-off switching wire device are both fixed on the first up-down connecting rod 19, the right bearing seat of the second take-up and pay-off switching wire device and the left bearing seat of the third take-up and pay-off switching wire device are both fixed on the second up-down connecting rod 20, the right bearing seat of the third take-up and pay-off switching wire device and the left bearing seat of the fourth take-up and pay-off switching wire device are both fixed on the.
Use of: 1. the tester 25 is placed on the bottom frame 1 of the movable protection and debugging folding frame, the handle frame 7 is pulled by hand, and the tester 25 is conveyed to the position of equipment to be tested (such as a current transformer), which can be completed by only 1 person. 2. Respectively pulling and paying off one end of an A-phase external connection wire 10, a B-phase external connection wire 11, a C-phase external connection wire 12 and an N-phase grounding external connection wire 13, and then respectively connecting with a current transformer secondary side junction box (pile head) A phase 27, a current transformer secondary side junction box (pile head) B phase 28, a current transformer secondary side junction box (pile head) C phase and a grounding wire of equipment to be tested (such as a current transformer); and pulling one end of the external grounding wire 2, paying off and then connecting with a grounding end. 3. The phase A, the phase B, the phase C and the grounding wire of a tester cable 24 of the tester 25 are respectively connected with the other ends of the phase A external wire 10, the phase B external wire 11, the phase C external wire 12 and the N grounding external wire 13 (plug-in connection can be adopted); the tester ground 26 is connected to the other end of the external ground 2 (a plug-in connection may be used). 4. After the test is completed, the wire is taken up and transported back to the tester 25.
Claims (4)
1. The movable protection and debugging folding frame is characterized by comprising an underframe (1), a universal wheel (5), a hinge (6), a handle frame (7), a first winding and unwinding switching wire device, a second winding and unwinding switching wire device, a third winding and unwinding switching wire device, a fourth winding and unwinding switching wire device and a grounding winding and unwinding switching wire device; universal wheels (5) are respectively arranged at the four corners of the bottom surface of the bottom frame (1); the lower end part of the handle frame (7) is hinged with the front end part of the bottom frame (1) through a hinge (6); the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are sequentially arranged from left to right, and the first winding and unwinding switching line device, the second winding and unwinding switching line device, the third winding and unwinding switching line device and the fourth winding and unwinding switching line device are respectively arranged at the upper part of the handle frame (7); the grounding take-up and pay-off switching line device is arranged at the rear part of the bottom surface of the underframe (1);
the first take-up and pay-off transfer line device comprises a bearing seat (14), a bearing (15), a left baffle disc (16), a first reel shaft (17) and a right baffle disc (18); the left end part and the right end part of the first reel shaft (17) are respectively provided with a bearing (15), the bearing (15) is arranged on the handle frame (7) through a bearing seat (14), the left part of the first reel shaft (17) is fixedly provided with a left blocking disc (16), the right part of the first reel shaft (17) is fixedly provided with a right blocking disc (18), and a wire winding and unwinding space is formed between the left blocking disc (16) and the right blocking disc (18); a phase external connection wire (10) is wound on a first winding shaft (17) of the wire winding and unwinding space;
the second take-up and pay-off switching line device comprises a bearing seat, a bearing, a left baffle disc, a second winding shaft and a right baffle disc; the left end part and the right end part of the second winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats, the left part of the second winding shaft is fixedly provided with a left baffle disc, the right part of the second winding shaft is fixedly provided with a right baffle disc, and a winding and unwinding space is formed between the left baffle disc and the right baffle disc; a B-phase external connecting wire (11) is wound on a second winding shaft of the wire winding and unwinding space;
the third reeling and unreeling patch cord device comprises a bearing seat, a bearing, a left baffle disc, a third winding shaft and a right baffle disc; the left end part and the right end part of the third winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats, the left part of the third winding shaft is fixedly provided with a left baffle disc, the right part of the third winding shaft is fixedly provided with a right baffle disc, and a winding and unwinding space is formed between the left baffle disc and the right baffle disc; c-phase external connecting wires (12) are wound on a third winding shaft of the wire winding and unwinding space;
the fourth reeling and unreeling patch cord device comprises a bearing seat, a bearing, a left baffle disc, a fourth winding shaft and a right baffle disc; the left end part and the right end part of the fourth winding shaft are respectively provided with a bearing, the bearings are arranged on the handle frame through bearing seats, the left part of the fourth winding shaft is fixedly provided with a left baffle disc, the right part of the fourth winding shaft is fixedly provided with a right baffle disc, and a winding and unwinding space is formed between the left baffle disc and the right baffle disc; an N grounding external connection wire (13) is wound on a fourth winding shaft of the wire winding and unwinding space;
the ground connection coiling and uncoiling switching wire device comprises a ground wire winding shaft (3), a bearing seat and a bearing, wherein the bearing is respectively installed at the left end part and the right end part of the ground wire winding shaft (3), the bearing is installed on the underframe (1) through the bearing seat, and an external ground wire (2) is wound on the ground wire winding shaft (3).
2. The mobile protective commissioning folding leg of claim 1, wherein: the handle frame (7) comprises a handle frame, a lower left-right connecting rod (8), an upper left-right connecting rod (9), a first upper-lower connecting rod (19), a second upper-lower connecting rod (20) and a third upper-lower connecting rod (21); the handle frame is formed by connecting an upper rod, a lower rod (23), a left rod and a right rod, an upper left-right connecting rod (9) is fixedly connected between the upper part of the left rod and the upper part of the right rod, and a lower left-right connecting rod (8) is fixedly connected between the lower part of the left rod and the lower part of the right rod; a first up-down connecting rod (19), a second up-down connecting rod (20) and a third up-down connecting rod (21) are fixedly connected between the upper rod and the upper left-right connecting rod (9), and the first up-down connecting rod (19), the second up-down connecting rod (20) and the third up-down connecting rod (21) are sequentially arranged from left to right.
3. The mobile protective commissioning folding leg of claim 1, wherein: the number of the hinges (6) is 2-10.
4. The mobile protective commissioning folding leg of claim 1, wherein: the underframe (1) comprises a underframe and a front-back connecting rod (4); the bottom frame is formed by connecting a front rod (22), a rear rod, a left rod and a right rod, and 1-10 front and rear connecting rods (4) are fixedly connected between the front rod (22) and the rear rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068434.0A CN111302159A (en) | 2020-01-21 | 2020-01-21 | Movable protection debugging folding leg |
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| CN202010068434.0A CN111302159A (en) | 2020-01-21 | 2020-01-21 | Movable protection debugging folding leg |
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| CN111302159A true CN111302159A (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023504A (en) * | 2021-03-16 | 2021-06-25 | 国网新疆电力有限公司哈密供电公司 | Multifunctional relay protection tester draw-bar box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023504A (en) * | 2021-03-16 | 2021-06-25 | 国网新疆电力有限公司哈密供电公司 | Multifunctional relay protection tester draw-bar box |
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