CN215419317U - Can carry multi-functional auxiliary device of relay protection debugging appearance - Google Patents

Abstract

The utility model belongs to the technical field of electric power. A multifunctional auxiliary device capable of carrying a relay protection debugging instrument is characterized by comprising a movable chair, a first take-up and pay-off reel, a second take-up and pay-off reel, a third take-up and pay-off reel, a fourth take-up and pay-off reel, a fifth take-up and pay-off reel, an A-phase external connection line, a B-phase external connection line, a C-phase external connection line, an N-grounded external connection line, an external grounding line, a first binding post, a second binding post, a third binding post, a fourth binding post, a cable reel, a power line, a first tool box, a second tool box, a third tool box, a fourth tool box and a rotary bearing; the cable drum is installed on the third axle, and the left end portion of third axle is connected with left branch strut by the bearing. The device has the characteristics of convenient wiring and time saving when the relay protection device is used for debugging, can store tools for dismantling or laying secondary cables in a classified manner, can provide a short-distance power supply, and can be seated.

Description

Can carry multi-functional auxiliary device of relay protection debugging appearance

Technical Field

The utility model belongs to the technical field of electric power, and particularly relates to a multifunctional auxiliary device capable of carrying a relay protection debugging instrument.

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 check operation is carried out on lines of an outdoor transformer substation with the voltage class of 35kV or above, the precision of a protection device and a measurement device needs to be judged by adding a protection relay protection debugging instrument (or called a tester, a protection tester and a relay protection tester), and four-core (yellow-A phase, green-B phase, red-C phase and black-N grounding electrode) test wires are 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. The four cores are often stirred together in the use process, and particularly when voltage and current are respectively added to a protective relay protection debugging instrument, the time for arranging test wires is taken for several minutes, and the time taken is roughly divided into wiring of the tester before debugging, wire changing in the debugging process and wire winding after the debugging is finished.

Relay protection debugging instrument (or called tester) application: the currently commonly used relay protection debugging instruments are divided into three types, which are respectively as follows according to manufacturers: the device comprises an Oncui tester, a Bo-Teh tester and a Lu-Teh tester (or called as an Oncui relay protection debugging instrument, a Bo-Teh relay protection debugging instrument and a Lu-Teh relay protection debugging instrument). 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 test of the existing new-type multi-functional at present of the functional test, 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. The standing work time is long, the person is tired, and no place for the person to sit for rest is available.

The transformer substation carries out technological improvement overhaul engineering and relates to transformer secondary part engineering, the installation of relay protection device, change, and synthesize the transformation of system, the engineering in-process needs to carry out dismantling or laying of secondary cable, secondary constructor need get rid of the processing to the cable skin (insulating layer, metal armour, inlayer plastic layer, inlayer copper mesh ground connection armour layer), the core that goes out until the cable counts, simultaneously can the net twine lay, communication is to the net twine lay, optical fiber lays etc., the in-process that goes on relates to art designing sword, vice, sharp-nosed pliers, the insulating tape, wire stripper, heat seal pipe machine (alternating current power supply), labeller (alternating current power supply), number pipe machine (alternating current power supply), the ribbon, multiplexer utensil such as various bottle openers. Problem 1: such multiplexer utensil divides sometimes to place in the position of difference in the work progress, when the protection screen cabinet rear end terminal row at the master control room is under construction, because the front and back row distance of the protection screen of some master control rooms is nearer, the cable figure that comes from the cable pit is more than the price, just divide into about just single protection screen rear end terminal row and carry out the wiring, the work progress scene is more chaotic, multiplexer utensil is not fixed in same position, the multiplexer utensil that hand-carries is less, if place at construction fixed position, the distance is more far away, the round trip is run and can be wasted time, if place at construction personal, lose very easily when laying cable. Problem 2: when the heat pipe sealing machine (alternating current power supply), the labeling machine (alternating current power supply) and the numbering pipe machine (alternating current power supply) need to be used in the construction process, enough power or plugs cannot be timely provided for supplying power, sometimes, the power which is far away from a construction site can only be used for charging, and the heat pipe sealing machine cannot be used in a centralized mode. Problem 3: relate to when the construction of protection screen cabinet, sometimes stand the construction, construction point position is high, stand standing on tiptoe and be under construction very tiredly, sometimes the construction of squatting, construction point position is low, the leg can numb, cause the harm big to secondary constructor knee long time!

Disclosure of Invention

The utility model aims to provide a multifunctional auxiliary device capable of carrying a relay protection debugging instrument, which has the characteristics of convenient wiring and time saving when the relay protection debugging instrument is used for debugging, can store tools for removing or laying secondary cables in a classified manner, can provide a short-distance power supply, and can be seated.

In order to realize the purpose of the utility model, the technical scheme adopted by the utility model is as follows: a multifunctional auxiliary device capable of carrying a relay protection debugging instrument is characterized by comprising a movable chair, a first take-up and pay-off reel, a second take-up and pay-off reel, a third take-up and pay-off reel, a fourth take-up and pay-off reel, a fifth take-up and pay-off reel, an A-phase external connection line, a B-phase external connection line, a C-phase external connection line, an N-grounded external connection line, an external grounding line, a first binding post, a second binding post, a third binding post, a fourth binding post, a cable reel, a power line, a first tool box, a second tool box, a third tool box, a fourth tool box and a rotary bearing;

the movable chair comprises a base, universal wheels, a rear left foot, a rear right foot, a front left foot, a front right foot, a chair panel, a hinge, a second shaft, a wiring installation rod, a first shaft, an upper left connecting rod, an upper right connecting rod, a left backrest rod, an upper front connecting rod and a right backrest rod; universal wheels are respectively installed at four corners of the bottom surface of the base, the lower ends of the rear left foot, the rear right foot, the front left foot and the front right foot are respectively fixed on the four corners of the upper surface of the base, the lower end of the left backrest rod is fixed with the front side surface of the upper end part of the front left foot, the lower end of the right backrest rod is fixed with the front side surface of the upper end part of the front right foot, and the upper end part of the left backrest rod and the upper end part of the right backrest rod are fixedly connected with a front upper connecting rod; a wiring installation rod and a first shaft are fixedly connected between the left backrest rod and the right backrest rod, and the first shaft is positioned above the wiring installation rod; a second shaft is fixedly connected between the lower end part of the front left foot and the lower end part of the front right foot; a left upper connecting rod is fixedly connected between the upper end of the front left foot and the upper end of the rear left foot, and a right upper connecting rod is fixedly connected between the upper end of the front right foot and the upper end of the rear right foot; the chair panel is placed on the upper ends of the rear left foot, the rear right foot, the front left foot and the front right foot, and the right side of the chair panel is hinged with the right upper connecting rod through 2 hinges;

the first winding and unwinding disc, the second winding and unwinding disc, the third winding and unwinding disc and the fourth winding and unwinding disc are respectively sleeved on a first shaft, the first winding and unwinding disc, the second winding and unwinding disc, the third winding and unwinding disc and the fourth winding and unwinding disc are respectively connected with the first shaft through bearings, a first binding post, a second binding post, a third binding post and a fourth binding post are respectively installed on a wiring installation rod, the first binding post is positioned below the first winding and unwinding disc, the second binding post is positioned below the second winding and unwinding disc, the third binding post is positioned below the third winding and unwinding disc, and the fourth binding post is positioned below the fourth winding and unwinding disc; the A-phase external connection wire, the B-phase external connection wire, the C-phase external connection wire and the N-phase grounding external connection wire are correspondingly wound on a first winding and unwinding disc, a second winding and unwinding disc, a third winding and unwinding disc and a fourth winding and unwinding disc respectively, one end of the A-phase external connection wire is connected with a first binding post, one end of the B-phase external connection wire is connected with a second binding post, one end of the C-phase external connection wire is connected with a third binding post, and one end of the N-phase grounding external connection wire is connected with a fourth binding post;

the fifth take-up and pay-off reel is sleeved on the second shaft, the fifth take-up and pay-off reel is connected with the second shaft through a bearing, and an external grounding wire is wound on the fifth take-up and pay-off reel;

a left support frame is fixed on the rear side surface of the upper part of the front left foot of the movable chair, a right support frame is fixed on the rear side surface of the upper part of the front right foot of the movable chair, a cable drum is arranged on a third shaft, the left end part of the third shaft is connected with the left support frame through a bearing, the right end part of the third shaft is connected with the right support frame through a bearing, a power line is wound on the cable drum, the inner end part of the power line is electrically connected with the input end of an air switch, the air switch is arranged on a power panel, and the outer end of the power line is connected with a power plug; the power panel is provided with a plurality of sockets which are respectively and electrically connected with the output ends of the air switches, and the power panel is fixedly arranged on the left side surface or the right side surface of the cable coil;

a first tool box and a second tool box are arranged at the left part of a space between the front left foot and the front right foot of the movable chair, the first tool box is positioned below the cable drum, the first tool box is positioned above the second tool box, and the second tool box is positioned above the fifth take-up and pay-off drum; the first tool box is connected with a first rotary bearing by a connecting rod, and the first rotary bearing is arranged on the front left foot; the second tool box is connected with a second rotary bearing through a connecting rod, and the second rotary bearing is arranged on the front left foot;

a third tool box and a fourth tool box are arranged at the right part of a space between the front left foot and the front right foot of the movable chair, the third tool box is positioned below the cable drum, the third tool box is positioned above the fourth tool box, and the fourth tool box is positioned above the fifth take-up and pay-off drum; the third tool box is connected with a third rotary bearing by a connecting rod, and the third rotary bearing is arranged on the front right foot; the fourth tool box is connected with a fourth rotary bearing by a connecting rod, and the fourth rotary bearing is arranged on the front right foot.

And a rotating handle is arranged at the left end or the right end of the third shaft.

And one end of the external grounding wire is provided with a grounding wire clamp, the other end of the external grounding wire is connected with a grounding wire column, and the grounding wire column is arranged on the base.

And a rear upper connecting rod is fixedly connected between the upper end of the rear left foot and the upper end of the rear right foot.

And a front middle connecting rod is fixedly connected between the upper end part of the front left foot and the upper end part of the front right foot.

The utility model has the beneficial effects that: 1. the length of the cable and the grounding wire of the existing relay protection debugging instrument (or called tester) is not long enough, external connection is needed, if the external connection is not prepared in advance, the wiring is inconvenient, and the wiring is not time-saving. The device has the characteristics of convenient wiring and time saving; the chair panel is arranged, and the device also has the function of sitting and resting; the device has simple structure, reasonable layout and convenient use. Mobility: multidirectional rotation, 1 people of staff need, it is convenient to remove.

2. The device can store tools (such as art designing knives, vices, sharp nose pliers, insulating tapes, wire strippers, binding tapes and various screwdrivers) for removing or laying secondary cables in a classified way. The electric wire coil and the socket are arranged, and a close-distance power supply (socket) can be provided for a heat sealing pipe machine (alternating current power supply), a labeling machine (alternating current power supply) and a numbering pipe machine (alternating current power supply). The chair panel is arranged, so that the chair can be used for sitting construction. The utility model greatly facilitates the construction of technical improvement and major repair projects of the transformer substation. The utility model has multiple functions.

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 view (front view) of the present invention.

Fig. 3 is a left side view of fig. 2.

Fig. 4 is a schematic diagram of the relay protection debugging instrument in transport.

Reference numbers in the figures: 1-base, 2-second shaft, 3-rear left foot, 4-first binding post, 5-wiring installation rod, 6-first shaft, 7-first take-up and pay-off disc, 8-A phase external connection wire, 9-second take-up and pay-off disc, 10-third take-up and pay-off disc, 11-fourth take-up and pay-off disc, 12-chair panel, 13-hinge, 14-N grounding external connection wire, 15-fourth binding post, 16-rear right foot, 17-universal wheel, 18-external grounding wire, 19-fifth take-up and pay-off disc, 20-upper left connecting rod, 21-front left foot, 22-relay protection debugging instrument, 23-relay protection debugging instrument cable, 24-relay protection debugging instrument grounding wire, 25-current transformer secondary side junction box (pile head) phase A, 26-phase B of a current transformer secondary side junction box (pile head), 27-phase C of the current transformer secondary side junction box (pile head), 28-left backrest rod, 29-front upper connecting rod, 30-right backrest rod, 31-rear upper connecting rod, 32-socket, 33-power panel, 34-third shaft, 35-cable coil, 36-power line, 37-first tool box, 38-rotary bearing, 39-second tool box, 40-third tool box, 41-fourth tool box, 42-left support frame, 43-grounding wire column, 44-grounding wire clamp, 45-power plug and 46-air switch.

Detailed Description

As shown in fig. 2, 3, and 4, a multifunctional auxiliary device capable of carrying a relay protection debugging instrument (or called a tester) includes a movable chair, a first take-up and pay-off reel 7, a second take-up and pay-off reel 9, a third take-up and pay-off reel 10, a fourth take-up and pay-off reel 11, a fifth take-up and pay-off reel 19, an a-phase external connection line 8, a B-phase external connection line, a C-phase external connection line, an N-phase ground external connection line 14, an external ground line 18, a first terminal 4, a second terminal, a third terminal, a fourth terminal 15, a cable reel 35, a power line 36, a first tool box 37, a second tool box 39, a third tool box 40, a fourth tool box 41, and a rotary bearing 38;

the movable chair comprises a base 1, universal wheels 17, a rear left foot 3, a rear right foot 16, a front left foot 21, a front right foot, a chair panel 12, a hinge 13, a second shaft 2, a wiring installation rod 5, a first shaft 6, an upper left connecting rod 20, an upper right connecting rod, a left backrest rod 28, an upper front connecting rod 29 and a right backrest rod 30; universal wheels 17 are respectively installed at four corners of the bottom surface of a base (or called a chassis) 1 (namely, a multifunctional auxiliary device capable of carrying a relay protection debugging instrument is movable, the universal wheels 17 can be universal wheels with brakes), the lower ends of a rear left foot 3, a rear right foot 16, a front left foot 21 and a front right foot are respectively fixed at four corners of the upper surface of the base 1 (for convenience of description, the left side and the right side in fig. 2 are left and right; the left side and the right side in fig. 3 are front and rear), the lower end of a left backrest rod 28 is fixed with the front side surface of the upper end of the front left foot 21 (can be in an integral structure), the lower end of a right backrest rod 30 is fixed with the front side surface of the upper end of the front right foot (can be in an integral structure), and the upper ends of the left backrest rod 28 and the right backrest rod 30 are fixedly connected with a front upper connecting rod 29 (the front upper connecting rod 29 can be used as a push-pull rod); a wiring installation rod 5 and a first shaft 6 are fixedly connected between the left backrest rod 28 and the right backrest rod 30, and the first shaft 6 is positioned above the wiring installation rod 5 (the first shaft 6 is positioned below the front upper connecting rod 29); a second shaft 2 is fixedly connected between the lower end part of the front left foot 21 and the lower end part of the front right foot; a left upper connecting rod 20 is fixedly connected between the upper end part of the front left foot 21 and the upper end part of the rear left foot 3, and a right upper connecting rod is fixedly connected between the upper end part of the front right foot and the upper end part of the rear right foot 16; the chair panel 12 rests on the upper ends of the rear left foot 3, the rear right foot 16, the front left foot 21 and the front right foot, and the right side of the chair panel 12 is hinged with the right upper connecting rod by 2 hinges 13 (i.e. the chair panel 12 can be opened);

a first take-up and pay-off reel 7, a second take-up and pay-off reel 9, a third take-up and pay-off reel 10 and a fourth take-up and pay-off reel 11 are respectively sleeved on a first shaft 6 (the first shaft 6 is mounted in advance and then the first shaft 6 is fixed), the first take-up and pay-off reel 7, the second take-up and pay-off reel 9, the third take-up and pay-off reel 10 and the fourth take-up and pay-off reel 11 are respectively connected with the first shaft 6 through bearings (namely the first take-up and pay-off reel 7, the second take-up and pay-off reel 9, the third take-up and pay-off reel 10 and the fourth take-up and pay-off reel 11 can rotate), a first binding post 4, a second binding post, a third binding post and a fourth binding post 15 are respectively mounted on a wiring mounting rod 5 (the wiring mounting rod 5 is made of insulating materials, or the connecting parts of the first binding post 4, the second binding post, the third binding post and the fourth binding post 15 and the wiring mounting rod 5 are made of insulating materials, the first binding post 4 is positioned below the first take-up and pay-off reel 7, the second binding post is positioned below the second take-up and pay-off reel 9, the third binding post is positioned below the third take-up and pay-off reel 10, and the fourth binding post 15 is positioned below the fourth take-up and pay-off reel 11; the A-phase external connection wire 8, the B-phase external connection wire, the C-phase external connection wire and the N-grounding external connection wire 14 are correspondingly wound on a first take-up and pay-off reel 7, a second take-up and pay-off reel 9, a third take-up and pay-off reel 10 and a fourth take-up and pay-off reel 11 respectively, one end of the A-phase external connection wire 8 is connected with the first binding post 4, one end of the B-phase external connection wire is connected with the second binding post, one end of the C-phase external connection wire is connected with the third binding post, and one end of the N-grounding external connection wire 14 is connected with the fourth binding post;

a fifth take-up and pay-off reel 19 is sleeved on the second shaft 2 (the fifth take-up and pay-off reel 19 is installed on the second shaft 2 in advance, and then the second shaft 2 is fixed), the fifth take-up and pay-off reel 19 is connected with the second shaft 2 through a bearing (namely, the fifth take-up and pay-off reel 19 can rotate), an external grounding wire 18 is wound on the fifth take-up and pay-off reel 19 (one end head of the external grounding wire 18 is provided with a grounding wire clamp, the other end head of the external grounding wire 18 is connected with a grounding wire 24 of the tester through a grounding wire column 43, and the grounding wire column 43 is installed on the base 1);

a left support frame 42 is fixed on the rear side surface of the upper part of the front left foot 21 of the movable chair, a right support frame is fixed on the rear side surface of the upper part of the front right foot of the movable chair, a cable drum 35 is arranged on a third shaft 34 (can be arranged in a fixed mode; the cable drum 35 can also be arranged on the third shaft 34 by a bearing; the third shaft 34 is positioned below a rear upper connecting rod 31), the left end part of the third shaft 34 is connected with the left support frame 42 by a bearing, the right end part of the third shaft 34 is connected with the right support frame by a bearing (namely, the third shaft 34 can rotate to drive the cable drum 35 to rotate), a power wire (cable) 36 is wound on the cable drum 35, the inner end part of the power wire 36 is electrically connected with the input end of an idle switch 46, the idle switch 46 is arranged on a power panel 33, the outer end of the power wire 36 is connected with a power plug 45 (when in use, the power plug 45 is connected with a mains supply socket fixed far away, providing power); a plurality of sockets (such as 2-4 sockets with three holes and two holes) 32 are installed on the power panel 33, the plurality of sockets 32 are respectively electrically connected with the output end of the idle switch 46, and the power panel 33 is fixedly installed on the left side surface or the right side surface of the cable coil 35 (the left side surface is adopted in the embodiment; a rotating handle is installed at the left end or the right end of the third shaft 34);

a first tool box 37 and a second tool box 39 are arranged at the left part of the space between the front left foot 21 and the front right foot of the movable chair, the first tool box 37 is positioned below the cable drum 35, the first tool box 37 is positioned above the second tool box 39, and the second tool box 39 is positioned above the fifth take-up and pay-off drum 19; the first tool box 37 is connected with a first rotary bearing 38 by a connecting rod, and the first rotary bearing 38 is arranged on the front left foot 21; the second tool box 39 is connected with a second rotary bearing 38 by a connecting rod, and the second rotary bearing 38 is arranged on the front left foot 21;

a third tool box 40 and a fourth tool box 41 are arranged at the right part of the space between the front left foot 21 and the front right foot of the movable chair, the third tool box 40 is positioned below the cable drum 35, the third tool box 40 is positioned above the fourth tool box 41, and the fourth tool box 41 is positioned above the fifth take-up and pay-off drum 19; the third tool box 40 is connected with a third rotary bearing 38 by a connecting rod, and the third rotary bearing 38 is arranged on the front right foot; the fourth tool box 41 is connected to the fourth rotary bearing 38 by a connecting rod, and the fourth rotary bearing 38 is mounted on the front right foot.

A rear upper connecting rod 31 is fixedly connected between the upper end of the rear left foot 3 and the upper end of the rear right foot 16.

A front middle connecting rod is fixedly connected between the upper end of the front left foot 21 and the upper end of the front right foot.

The chair panel 12 may be a plate.

The base 1 may be a plate. It is also possible to use: the base 1 comprises a bottom frame and a front-back connecting rod; the underframe is formed by connecting front rod, back rod, left pole, right pole (the front end of left pole and the left end fixed connection of front rod, the rear end of left pole and the left end fixed connection of back rod, the front end of right pole and the right-hand member fixed connection of front rod, the rear end of right pole and the right-hand member fixed connection of back rod), 2-10 front-back connecting rods (this embodiment adopts 4, can shelve relay protection debugging appearance 22) of fixedly connected with between front rod and the back rod.

The universal wheel can adopt the fixed universal wheel of buckle, adopts the universal wheel can roll at will to the buckle is fixed, moves at once when using, can put along with job site's reality when not. The utility model adopts the mounting wheels, can be dragged to walk, and is convenient to move.

Use of: firstly, debugging the relay protection device.

1. The chair panel 12 is opened first, the relay protection debugging instrument 22 is placed on the base 1, and the relay protection debugging instrument (or called tester) 22 is transported to the equipment to be tested (such as a current transformer), which can be completed by only 1 person.

2. Respectively pulling and paying off the other ends of the A-phase external connection wire 8, the B-phase external connection wire, the C-phase external connection wire and the N-grounding external connection wire 14, and then respectively connecting with a current transformer secondary side junction box (pile head) A phase 25, a current transformer secondary side junction box (pile head) B phase 26, a current transformer secondary side junction box (pile head) C phase 27 and a grounding wire of equipment to be tested (such as a current transformer); one end of the external ground wire 18 is pulled, paid out and then connected to the ground.

3. Respectively connecting the phase A, the phase B, the phase C and the grounding wire of a relay protection debugging instrument cable 23 of the relay protection debugging instrument 22 with one end joint of the corresponding phase A external connection wire 8, the corresponding phase B external connection wire, the corresponding phase C external connection wire and the corresponding N grounding external connection wire 14 on the first binding post 4, the second binding post, the third binding post and the fourth binding post 15 (plug-in connection can be adopted); and connecting the earth wire 24 of the relay protection debugging instrument with the other end of the external earth wire 18 (adopting an earth wire column 43 for connection, and adopting a plug-in connection).

4. The test is performed, the chair panel 12 is closed, and the person can sit on the chair panel 12 for rest. 5. After the test is completed, the wire is taken up and transported back to the relay protection debugging instrument 22.

And secondly, carrying out technical improvement and overhaul projects on the transformer substation, relating to the installation and replacement of a secondary part project and a relay protection device of the transformer substation and the reconstruction of a comprehensive system, wherein secondary cables need to be dismantled or laid in the process of the project.

1. The utility knife and the like can be placed in the fourth tool box, the vice, the nipper, the wire stripper and the like can be placed in the third tool box, various screwdrivers can be placed in the second tool box, and the insulating adhesive tape, the binding belt and the like can be placed in the first tool box; the tools are stored in a classified mode and can be found conveniently, and the tools are taken out of the corresponding tool boxes (the first tool box, the second tool box, the third tool box and the fourth tool box can be rotated out).

2. When the multifunctional auxiliary device works, the multifunctional auxiliary device capable of carrying a relay protection debugging instrument (or called a tester) is moved to a construction place { when the multifunctional auxiliary device does not work, a power line (a cable) 36 and an external grounding wire 18 are in a rolling state }; respectively pulling out a power line (cable) 36 and an external grounding wire 18, pulling a power plug 45 on the power line (cable) to a mains supply socket (a transformer substation master control room) fixed at a far position, and inserting and connecting the power plug and the mains supply socket to provide power; the plurality of sockets 32 mounted on the power panel 33 can provide a close-range power supply (socket) for the heat sealing machine (ac power supply), the labeling machine (ac power supply) and the numbering machine (ac power supply). The ground clip 44 on the external ground line 18 is pulled to and connected to ground. What tools are needed can be taken out of the corresponding tool box. People can sit on the seat for construction.

3. After the work is finished, the power plug 45 is pulled out, the grounding clip 44 is removed, and the power line (cable line) 36 and the external grounding line 18 are wound.

Claims (2)

1. A multifunctional auxiliary device capable of carrying a relay protection debugging instrument is characterized by comprising a movable chair, a first take-up and pay-off reel (7), a second take-up and pay-off reel (9), a third take-up and pay-off reel (10), a fourth take-up and pay-off reel (11), a fifth take-up and pay-off reel (19), an A-phase external connection line (8), a B-phase external connection line, a C-phase external connection line, an N-grounding external connection line (14), an external grounding line (18), a first binding post (4), a second binding post, a third binding post, a fourth binding post (15), a cable reel (35), a power line (36), a first tool box (37), a second tool box (39), a third tool box (40), a fourth tool box (41) and a rotary bearing (38);

the movable chair comprises a base (1), universal wheels (17), a rear left foot (3), a rear right foot (16), a front left foot (21), a front right foot, a chair panel (12), a hinge (13), a second shaft (2), a wiring installation rod (5), a first shaft (6), an upper left connecting rod (20), an upper right connecting rod, a left backrest rod (28), an upper front connecting rod (29) and a right backrest rod (30); universal wheels (17) are respectively installed at four corners of the bottom surface of the base (1), the lower ends of a rear left foot (3), a rear right foot (16), a front left foot (21) and a front right foot are respectively fixed at the four corners of the upper surface of the base (1), the lower end of a left backrest rod (28) is fixed with the front side surface of the upper end of the front left foot (21), the lower end of a right backrest rod (30) is fixed with the front side surface of the upper end of the front right foot, and the upper end of the left backrest rod (28) and the upper end of the right backrest rod (30) are fixedly connected with a front upper connecting rod (29); a wiring installation rod (5) and a first shaft (6) are fixedly connected between the left backrest rod (28) and the right backrest rod (30), and the first shaft (6) is positioned above the wiring installation rod (5); a second shaft (2) is fixedly connected between the lower end part of the front left foot (21) and the lower end part of the front right foot; a left upper connecting rod (20) is fixedly connected between the upper end of the front left foot (21) and the upper end of the rear left foot (3), and a right upper connecting rod is fixedly connected between the upper end of the front right foot and the upper end of the rear right foot (16); the chair panel (12) is placed on the upper ends of the rear left foot (3), the rear right foot (16), the front left foot (21) and the front right foot, and the right side of the chair panel (12) is hinged with the upper right connecting rod through 2 hinges (13);

a first take-up and pay-off reel (7), a second take-up and pay-off reel (9), a third take-up and pay-off reel (10) and a fourth take-up and pay-off reel (11) are respectively sleeved on a first shaft (6), the first take-up and pay-off reel (7), the second take-up and pay-off reel (9), the third take-up and pay-off reel (10) and the fourth take-up and pay-off reel (11) are respectively connected with the first shaft (6) through bearings, a first binding post (4), a second binding post, a third binding post and a fourth binding post (15) are respectively installed on a wiring installation rod (5), the first binding post (4) is positioned below the first take-up and pay-off reel (7), the second binding post is positioned below the second take-up and pay-off reel (9), the third binding post is positioned below the third take-up and pay-off reel (10), and the fourth binding post (15) is positioned below the fourth take-up and pay-off reel (11); an A-phase external connection wire (8), a B-phase external connection wire, a C-phase external connection wire and an N-grounding external connection wire (14) are correspondingly wound on a first take-up and pay-off reel (7), a second take-up and pay-off reel (9), a third take-up and pay-off reel (10) and a fourth take-up and pay-off reel (11) respectively, one end of the A-phase external connection wire (8) is connected with a first binding post (4), one end of the B-phase external connection wire is connected with a second binding post, one end of the C-phase external connection wire is connected with a third binding post, and one end of the N-grounding external connection wire (14) is connected with a fourth binding post;

a fifth take-up and pay-off reel (19) is sleeved on the second shaft (2), the fifth take-up and pay-off reel (19) is connected with the second shaft (2) through a bearing, and an external grounding wire (18) is wound on the fifth take-up and pay-off reel (19);

a left support frame (42) is fixed on the rear side face of the upper part of a front left foot (21) of the movable chair, a right support frame is fixed on the rear side face of the upper part of a front right foot of the movable chair, a cable drum (35) is installed on a third shaft (34), the left end part of the third shaft (34) is connected with the left support frame (42) through a bearing, the right end part of the third shaft (34) is connected with the right support frame through a bearing, a power line (36) is wound on the cable drum (35), the inner end part of the power line (36) is electrically connected with the input end of an idle switch (46), the idle switch (46) is installed on a power panel (33), and the outer end of the power line (36) is connected with a power plug (45); a plurality of sockets (32) are mounted on the power panel (33), the sockets (32) are respectively and electrically connected with the output end of the air switch (46), and the power panel (33) is fixedly mounted on the left side surface or the right side surface of the cable coil (35);

a first tool box (37) and a second tool box (39) are arranged at the left part of a space between the front left foot (21) and the front right foot of the movable chair, the first tool box (37) is positioned below the cable drum (35), the first tool box (37) is positioned above the second tool box (39), and the second tool box (39) is positioned above the fifth take-up and pay-off drum (19); the first tool box (37) is connected with a first rotary bearing (38) by a connecting rod, and the first rotary bearing (38) is arranged on the front left foot (21); the second tool box (39) is connected with a second rotary bearing (38) by a connecting rod, and the second rotary bearing (38) is arranged on the front left foot (21);

a third tool box (40) and a fourth tool box (41) are arranged at the right part of a space between the front left foot (21) and the front right foot of the movable chair, the third tool box (40) is positioned below the cable drum (35), the third tool box (40) is positioned above the fourth tool box (41), and the fourth tool box (41) is positioned above the fifth take-up and pay-off reel (19); the third tool box (40) is connected with a third rotary bearing (38) by a connecting rod, and the third rotary bearing (38) is arranged on the front right foot; the fourth tool box (41) is connected with a fourth rotary bearing (38) by a connecting rod, and the fourth rotary bearing (38) is arranged on the front right foot.

2. The multifunctional auxiliary device capable of carrying the relay protection debugging instrument as claimed in claim 1, wherein: the ground wire clamp is arranged on one end of the external ground wire (18), the other end of the external ground wire (18) is connected with the ground wire column (43), and the ground wire column (43) is installed on the base (1).

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