CN114436069B - Winding and unwinding device for connecting wire of insulation resistance tester - Google Patents

Winding and unwinding device for connecting wire of insulation resistance tester Download PDF

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Publication number
CN114436069B
CN114436069B CN202111571375.XA CN202111571375A CN114436069B CN 114436069 B CN114436069 B CN 114436069B CN 202111571375 A CN202111571375 A CN 202111571375A CN 114436069 B CN114436069 B CN 114436069B
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China
Prior art keywords
connecting wire
winding
insulation resistance
motor
resistance tester
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CN202111571375.XA
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Chinese (zh)
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CN114436069A (en
Inventor
谢深
张韬
黄凝凝
陈罗
陈志刚
林洁宏
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State Grid Fujian Electric Power Co Ltd
Fujian Shuikou Power Generation Group Co Ltd
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State Grid Fujian Electric Power Co Ltd
Fujian Shuikou Power Generation Group Co Ltd
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Priority to CN202111571375.XA priority Critical patent/CN114436069B/en
Publication of CN114436069A publication Critical patent/CN114436069A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, 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
    • B65H75/38Cores, 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
    • B65H75/44Constructional details
    • B65H75/4436Arrangements for yieldably braking the reel or the material for moderating speed of winding or unwinding
    • B65H75/4442Arrangements for yieldably braking the reel or the material for moderating speed of winding or unwinding acting on the reel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, 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
    • B65H75/38Cores, 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, 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
    • B65H75/38Cores, 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
    • B65H75/44Constructional details
    • B65H75/4418Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means
    • B65H75/4428Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, 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
    • B65H75/38Cores, 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
    • B65H75/44Constructional details
    • B65H75/4457Arrangements of the frame or housing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, 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
    • B65H75/38Cores, 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
    • B65H75/44Constructional details
    • B65H75/4481Arrangements or adaptations for driving the reel or the material
    • B65H75/4486Electric motors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/04Housings; Supporting members; Arrangements of terminals
    • G01R1/0408Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G01R1/0416Connectors, terminals
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/025Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/35Ropes, lines

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Abstract

The invention discloses a winding and unwinding device for a connecting wire of an insulation resistance tester, which comprises a connecting wire, a connector end, a clamping end, a winding box and a winding shaft; the winding shaft is connected with a motor, and the motor drives the winding shaft to automatically wind the connecting wire in the winding box; the connector end and the chuck end are respectively positioned at two ends of the connecting wire and outside the winding box, and the connecting wire can be pulled out of the winding box along with the chuck end. According to the invention, the motor and the reel are arranged in the winding box, so that the automatic winding of the connecting wire is realized, and the winding efficiency is improved; meanwhile, the connecting wire can be pulled out to the required length along with the clamping end, so that the free control of the unreeling length of the connecting wire is realized, and the unreeling efficiency is improved.

Description

Winding and unwinding device for connecting wire of insulation resistance tester
Technical Field
The invention relates to the technical field of power equipment, in particular to a winding and unwinding device for a connecting wire of an insulation resistance tester.
Background
When the insulation resistance of the electrical equipment is measured, a connecting wire is needed to connect the insulation resistance tester with the equipment, and the connecting wire mainly comprises a joint, a connecting wire part and a clamping head insulation rod, wherein one end of the joint is connected with the insulation resistance tester, and the other end of the clamping head insulation rod is connected with the equipment. When the insulation resistance tester works, the insulation resistance tester is equipment for generating high voltage, and a measuring object is electrical equipment, and when the insulation resistance tester is used, in order to avoid interference of other factors, a connecting wire of the insulation resistance tester is required to be incapable of being contacted with the ground or a metal object; and in the non-use state, the storage is needed to be carried out properly.
The traditional keeping mode is to directly wind and put the connecting wire in the storage box, and has the following defects:
1. when the connecting wire is stored, the connecting wire needs to be wound one by one manually, and when the connecting wire is used, the connecting wire needs to be pulled out one by one manually, and the connecting wire is generally longer and relatively thinner, so that the workload of workers is increased, and the time consumption is long.
2. The connecting wire skin is also possibly damaged when the connecting wire is stored, wound and unfolded, and the insulation of the connecting wire is reduced, so that the measured data is inaccurate.
3. The length of the connecting wire cannot be controlled fixedly in the use process, so that the wire possibly hangs on the ground or a metal shell of equipment in insulation measurement, and interference is caused to measurement data.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the winding and unwinding device for the connecting wire of the insulation resistance tester improves winding and unwinding efficiency of the connecting wire.
In order to solve the technical problems, the invention adopts the following technical scheme:
a winding and unwinding device for a connecting wire of an insulation resistance tester comprises a connecting wire, a connector end, a clamping end, a winding box and a reel;
the winding shaft is connected with a motor, and the motor drives the winding shaft to automatically wind the connecting wire in the winding box;
the connector end and the chuck end are respectively positioned at two ends of the connecting wire and outside the winding box, and the connecting wire can be pulled out of the winding box along with the chuck end.
Further comprising a dynamic vertical sensor;
the dynamic vertical sensor is sleeved on the connecting line and is positioned between the chuck end and the winding box, and the dynamic vertical sensor is always positioned at the lowest point of the connecting line;
the dynamic vertical sensor is in control connection with the motor, and the motor controls the reel to rotate so as to wind the connecting wire when the dynamic vertical sensor sends out a non-vertical signal.
The invention has the beneficial effects that: the invention provides a winding and unwinding device for connecting wires of an insulation resistance tester, which realizes automatic winding of the connecting wires and improves winding efficiency by arranging a motor and a winding shaft in a winding box; and through setting up dynamic vertical sensor in the chuck end department that is close to the connecting wire, thereby whether can be according to whether dynamic vertical sensor and ground contact detect the connecting wire and fall on subaerial behind the rolling box with the connecting wire, thereby automatic control motor rolling connecting wire, when the connecting wire rolling to the moment of not contacting with ground, dynamic vertical sensor just can become the vertical state from the incline state, the motor alright stop the rolling connecting wire, avoid connecting wire and ground contact to cause measuring data's inaccuracy when realizing the free control of connecting wire unreeling length, the improvement of connecting wire rolling unreeling speed has been realized promptly as a whole.
Drawings
FIG. 1 is a schematic diagram of the whole structure of a winding and unwinding device for connecting wires of an insulation resistance tester;
FIG. 2 is a schematic diagram of a dynamic vertical sensor;
FIG. 3 is a schematic view of a vertical handle of the dynamic vertical sensor in contact with the ground;
FIG. 4 is a schematic view of a vertical handle of a dynamic vertical sensor at ground clearance;
FIG. 5 is a schematic view of the internal structure of the winding box;
fig. 6 is a side sectional view of the winding box.
Description of the reference numerals:
1. a connecting wire; 2. a winding box; 21. a reel; 211. an inner ring; 212. an outer ring; 213. a first ratchet; 214. a second ratchet; 22. a baffle; 23. a connecting block; 24. a pressure spring; 25. a buffer plate; 3. a dynamic vertical sensor; 31. a cylinder; 32. a ball; 33. a vertical handle; 4. a connector end; 5. a clip end.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 5, a winding and unwinding device for a connection wire of an insulation resistance tester includes a connection wire, a connector end, a clip end, a winding box and a winding shaft;
the winding shaft is connected with a motor, and the motor drives the winding shaft to automatically wind the connecting wire in the winding box;
the connector end and the chuck end are respectively positioned at two ends of the connecting wire and outside the winding box, and the connecting wire can be pulled out of the winding box along with the chuck end.
Further comprising a dynamic vertical sensor;
the dynamic vertical sensor is sleeved on the connecting line and is positioned between the chuck end and the winding box, and the dynamic vertical sensor is always positioned at the lowest point of the connecting line;
the dynamic vertical sensor is in control connection with the motor, and the motor controls the reel to rotate so as to wind the connecting wire when the dynamic vertical sensor sends out a non-vertical signal.
From the above description, the beneficial effects of the invention are as follows: the motor and the scroll are arranged in the winding box, so that automatic winding of the connecting wire is realized, and the winding efficiency is improved; and through setting up dynamic vertical sensor in the chuck end department that is close to the connecting wire, thereby whether can be according to whether dynamic vertical sensor and ground contact detect the connecting wire and fall on subaerial behind the rolling box with the connecting wire, thereby automatic control motor rolling connecting wire, when the connecting wire rolling to the moment of not contacting with ground, dynamic vertical sensor just can become the vertical state from the incline state, the motor alright stop the rolling connecting wire, avoid the connecting wire to cause measuring data's inaccuracy with ground contact when realizing the connecting wire free control unreel length, the improvement of connecting wire coiling and unreeling speed has been realized promptly as a whole.
Further, the dynamic vertical sensor comprises a cylinder, balls and a vertical handle;
the balls are uniformly arranged at the inner side edge of the cylinder in the circumferential direction, and the connecting wires penetrate into the cylinder and are in rolling connection with the balls;
the vertical handle is positioned outside the cylinder and perpendicular to the radial direction of the cylinder, and is in flexible connection with the cylinder.
According to the description, the dynamic vertical sensor can slide on the connecting wire through the balls, in the using process of the connecting wire, the vertical handle can be guaranteed to be always kept at the lowest point of the connecting wire, and the vertical handle can be always in an inclined state when the connecting wire falls on the floor due to the action of self gravity, and the vertical sensor can be changed from the inclined state to the vertical state only when the connecting wire is tightened to the moment of being separated from the ground, so that the motor is guaranteed to stop tightening time, namely winding is stopped after the connecting wire is completely separated from the ground, and inaccuracy of measured data is further avoided.
Further, the number of the balls is six.
As can be seen from the above description, the balls are provided in six to ensure smooth rolling of the connection line in the dynamic vertical sensor.
Further, the scroll comprises an inner ring and an outer ring, and the inner ring is connected with the motor;
the outer side of the inner ring is provided with a first ratchet along the circumferential direction, and the inner side of the outer ring is provided with a second ratchet along the circumferential direction;
the first ratchet and the second ratchet are mutually embedded, and the outer ring can rotate relative to the inner ring along the direction opposite to the winding direction of the scroll under the cooperation of the first ratchet and the second ratchet.
As can be seen from the above description, when the connecting wire is pulled out to a required length in the process of being pulled out of the winding box along with the clip end, the connecting wire can be clamped by the first ratchet and the second ratchet, so that the connecting wire is kept at a stable length and no rotation occurs; when the connecting wire is used, only the motor is started to roll, and then the free control of the use length of the connecting wire is further realized.
Further, baffles are respectively arranged on two sides of the scroll in the axial direction;
the shape of the baffle is adapted to the shape of the winding box;
the spool is rotatable relative to the baffle.
From the above description, the limit of the baffle plates at two sides of the connecting wire can be used for stably winding in the winding box, so that the phenomenon that the connecting wire is wrongly written and misplaced during winding is avoided, and knotting of the connecting wire is caused.
Further, a connecting block is arranged between the two baffles and positioned at the edge of the baffles;
the connecting block is provided with a pressure spring towards the axis of the scroll;
a buffer plate is arranged at one end of the pressure spring, which is far away from the connecting block;
the buffer plate is elastically connected with the connecting wire wound at the reel under the action of the pressure spring.
According to the above description, the connecting block, the pressure spring and the buffer plate are arranged, and when the connecting wire is wound, the connecting wire is always abutted against the buffer plate due to the action of the pressure spring, and the buffering is performed by utilizing the action of the pressure spring, so that the arm or the finger is prevented from being injured by the winding speed in a flicking way.
Further, the number of the connecting blocks is at least one, and the positions, exposed out of the winding box, of the chuck ends are staggered, and the positions are arranged between the edges of the two baffles.
From the above description, the connecting block staggers the pulled position of the connecting wire, so as to avoid abrasion of the connecting wire in the winding process.
Further, a pressure sensor is arranged on the pressure spring, and when the pressure sensor detects that the pressure of the pressure spring is smaller than a preset value, an alarm is triggered to prompt that the connecting wire is used.
According to the description, when the connecting wire is used, the pressure spring is equivalent to an uncompressed state, namely the elasticity is very small, and the use length of the connecting wire can be monitored in real time by arranging the pressure sensor on the pressure spring, so that timely early warning prompt is carried out when the use of the connecting wire reaches the maximum length, and the damage to the connecting wire and even the whole winding and unwinding device caused by continuous pulling is avoided.
Further, the outside of joint end with the equal swing joint of clamp end has insulating protective sheath.
As can be seen from the above description, the insulating protective sleeve can be used to protect the butt end and the chuck end from damage caused by exposure to air when the connecting wire is not wound in the winding box; meanwhile, the safety of staff can be effectively protected in the use process.
The winding and unwinding device of the connecting wire of the insulation resistance tester can be applied to the scenes of measuring relevant parameters of electrical equipment by various insulation testers, and is described below with reference to specific embodiments:
referring to fig. 1 to 3, a first embodiment of the present invention is as follows:
the winding and unwinding device for the connecting wire of the insulation resistance tester comprises a connecting wire 1, a joint end 4, a chuck end 5, a winding box 2 and a winding shaft 21 as shown in fig. 1.
Wherein, the scroll 21 is connected with a motor, and the motor can drive the scroll 21 to automatically wind the connecting wire 1 in the winding box 2; the connector end 4 and the clip end 5 are respectively positioned at two ends of the connecting wire 1 and outside the winding box 2, and the connecting wire 1 can be pulled out of the winding box 2 along with the clip end 5.
Namely, in the embodiment, the motor and the scroll 21 are arranged in the winding box 2, so that the automatic winding of the connecting wire 1 is realized, and the winding efficiency is improved; meanwhile, the connecting wire 1 can be pulled out to the required length along with the clamping end 5, so that the free control of the unreeling length of the connecting wire 1 is realized, and the unreeling efficiency is improved.
As shown in fig. 1, the winding device further includes a dynamic vertical sensor 3, the dynamic vertical sensor 3 is sleeved on the connecting wire 1 and is located between the clamping end 5 and the winding box 2, in this embodiment, the dynamic vertical sensor 3 is connected with a motor in a control manner, and the motor controls the reel 21 to rotate to wind the connecting wire 1 when the dynamic vertical sensor 3 sends out a non-vertical signal.
As shown in fig. 2, in the present embodiment, the dynamic vertical sensor 3 includes a cylinder 31, balls 32, and a vertical shaft 33.
Wherein, the balls 32 are provided in plurality, the balls 32 are uniformly arranged in the circumferential direction at the inner edge of the cylinder 31, so that the connecting wire 1 can penetrate into the cylinder 31 to be connected with the balls 32 in a rolling way, and the vertical handle 33 is positioned at the outer side of the cylinder 31 and is perpendicular to the radial direction of the cylinder 31, wherein the vertical handle 33 is in soft connection with the cylinder 31, the soft connection is in line connection in the embodiment, and when the vertical handle 33 is contacted with the ground, the vertical handle 33 is in an inclined state with the ground.
In the present embodiment, when the connection wire 1 is in use, the dynamic vertical sensor 3 slides on the connection wire 1 due to the ball 32, so as to be always located at the lowest point of the connection wire 1; the vertical handle 33 is always in an inclined state due to the gravity of the motor when the connecting wire 1 falls on the floor, as shown in fig. 3, the dynamic vertical sensor 3 continuously sends out a non-vertical signal, and the motor can continuously control the rotation of the reel 21 to wind up the connecting wire 1 through the non-vertical signal; only when the connecting wire 1 is tightened to the moment of being lifted off the ground, as shown in fig. 4, that is, when the vertical handle 33 is lifted off the ground, the vertical handle 33 is changed from the inclined state to the vertical state, so that the vertical signal is sent, the motor can stop rotating at the moment, and the winding shaft 21 stops winding.
That is, in this embodiment, by setting the dynamic vertical sensing, when the connecting wire 1 is pulled out for use, whether the connecting wire 1 falls on the ground can be detected by judging whether the dynamic vertical sensor 3 is in a vertical state, so that the motor is automatically controlled to wind up the connecting wire 1 until the moment of not contacting with the ground, and the inaccuracy of measurement data caused by the contact between the connecting wire 1 and the ground is avoided, that is, the winding and unwinding speed of the connecting wire 1 is improved as a whole.
In addition, as shown in fig. 2, in the present embodiment, the number of balls 32 is six, so that smooth rolling of the connection line 1 in the dynamic vertical sensor 3 can be ensured.
Referring to fig. 5, a second embodiment of the present invention is as follows:
in the first embodiment, as shown in fig. 5, the reel 21 includes an inner ring 211 and an outer ring 212, wherein the inner ring 211 is connected with the motor.
As shown in fig. 5, a first ratchet 213 is provided on the outer side of the inner ring 211 in the circumferential direction, a second ratchet 214 is provided on the inner side of the outer ring 212 in the circumferential direction, the first ratchet 213 and the second ratchet 214 are engaged with each other, and the outer ring 212 is rotatable relative to the inner ring 211 in the direction opposite to the winding direction of the spool 21 by the engagement of the first ratchet 213 and the second ratchet 214.
Taking a specific use process as an example, in this embodiment, the clockwise direction in fig. 5 is taken as the unwinding direction of the connecting wire 1, the counterclockwise direction is taken as the winding direction of the connecting wire 1, and the directions of the first ratchet 213 and the second ratchet 214 are both clockwise directions.
When the connection wire 1 in the winding box 2 needs to be pulled out for use, the motor is not electrified at this time, and the inner ring 211 cannot rotate at this time because the motor cannot rotate in the unpowered state due to the characteristics of the motor.
In the process of pulling out the connecting wire 1, because the first ratchet 213 of the inner ring 211 is matched with the second ratchet 214 of the outer ring 212, the outer ring 212 can rotate clockwise under the pulling of the connecting wire 1, when a user pulls out the connecting wire 1 to the length required to be used, the pulling is stopped, and at the moment, the first ratchet 213 and the second ratchet 214 are matched and clamped, so that the connecting wire 1 is kept at a stable length, and no rotation occurs. Meanwhile, in combination with the dynamic vertical sensor 3 in the first embodiment, if the length of the connecting wire 1 pulled out by the user is too long, so that the connecting wire falls on the ground, the dynamic vertical sensor 3 sends out an un-vertical signal, the motor is electrified to drive the inner ring 211 of the reel 21 to rotate anticlockwise, and because of the clamping connection between the first ratchet 213 and the second ratchet 214, the inner ring 211 drives the outer ring 212 to rotate anticlockwise too, so that the connecting wire 1 is driven to wind up, when the connecting wire 1 is wound up to leave the ground, the dynamic vertical sensor 3 sends out a vertical signal, the motor is powered off, and the rotation is stopped, so that the connecting wire 1 at the moment not only ensures the length required by the user to be convenient for connecting tested equipment, but also avoids the inaccuracy of the data of subsequent measuring equipment caused by the grounding of the connecting wire 1, namely the free control of the using length of the connecting wire 1 is realized as a whole. Meanwhile, when the measurement is finished, the connecting wire 1 can be completely wound up by the starting motor.
Referring to fig. 5 and 6, a third embodiment of the present invention is as follows:
in the second embodiment, as shown in fig. 6, the winding and unwinding device for the connection wire of the insulation resistance tester is provided with the baffle plates 22 on both sides of the reel 21 in the axial direction.
Wherein, as shown in fig. 5, the shape of the baffle 22 is adapted to the shape of the winding box 2, and the reel 21 can rotate relative to the baffle 22. Namely, as shown in fig. 6, the connecting wire 1 can be stably wound in the winding box 2 through the limit of the baffles 22 at two sides, so that the phenomenon that the connecting wire 1 is knotted due to misprinting and misplacement during winding is avoided.
As shown in fig. 5 and 6, a connecting block 23 is disposed between two baffles 22 and located at the edge of the baffles 22, a compression spring 24 is disposed in the direction of the connecting block 23 towards the axis of the reel 21, and a buffer plate 25 is disposed at one end of the compression spring 24 away from the connecting block 23. In this embodiment, the buffer plate 25 is elastically connected with the connecting wire 1 wound on the reel 21 under the action of the compression spring 24, and when the connecting wire 1 is wound, the connecting wire 1 is always abutted against the buffer plate 25 due to the action of the compression spring 24, and is buffered by the action of the compression spring 24, so as to avoid the arm or finger from being injured by the wound arm due to too high winding speed. In other equivalent embodiments, the connecting block 23 is at least one, and the position of the staggered clamping end 5 exposing the winding box 2 is set between the edges of the two baffles 22, so that the winding speed is buffered, and the abrasion to the connecting line 1 in the winding process is avoided.
Meanwhile, in this embodiment, a pressure sensor is further disposed on the pressure spring 24, and when the pressure sensor detects that the pressure of the pressure spring 24 is smaller than a preset value, an alarm is triggered to prompt that the connecting wire 1 is used. Namely, when the connecting wire 1 is used, the pressure spring 24 is equivalent to an uncompressed state, the elasticity is very small, and the use length of the connecting wire 1 can be monitored in real time by arranging the pressure sensor on the pressure spring 24, so that timely early warning prompt is carried out when the use of the connecting wire 1 reaches the maximum length, and the damage to the connecting wire 1 and even the whole winding and unwinding device caused by continuous pulling is avoided.
In addition, all swing joint has insulating protective sheath in the outside of joint end 4 and chuck end 5, can be used to when connecting wire 1 does not use the rolling in rolling box 2, and butt joint head end 4 and chuck end 5 protect, avoid exposing and cause the harm in the air, also can effectively protect staff's safety in the use simultaneously.
In summary, the winding and unwinding device for the connecting wire of the insulation resistance tester provided by the invention has the following beneficial effects:
1. the motor drives the reel to roll the connecting wire, so that the rolling efficiency is improved.
2. The dynamic vertical sensor is arranged, whether the connecting line is grounded or not is judged by the fact that whether the dynamic vertical sensor is vertical or not, and the motor continuously winds the connecting line under the non-vertical state until winding is stopped when the motor is vertical, so that inaccuracy of measurement data caused by contact between the connecting line and the ground is avoided.
3. The free control of the pull-out length of the connecting wire is realized through the matching of the ratchets of the inner ring and the outer ring of the reel.
4. Limiting the connecting wire wound in the winding box through the baffle plate, and avoiding misplacement and misplacement writing of winding of the connecting wire; buffering is carried out on the winding process through the connecting block, the pressure spring and the buffer plate, so that the arm or finger is prevented from being injured by the winding speed in a flicking way;
5. the elasticity of the pressure spring is monitored in real time through the pressure sensor, and when the connecting wire is used to reach the maximum length, early warning is carried out to prompt that the connecting wire is used, so that the connecting wire and even the whole winding and unwinding device are prevented from being damaged by continuous pulling.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.

Claims (9)

1. The winding and unwinding device for the connecting wire of the insulation resistance tester is characterized by comprising a connecting wire, a connector end, a clamping end, a winding box and a winding shaft;
the winding shaft is connected with a motor, and the motor drives the winding shaft to automatically wind the connecting wire in the winding box;
the connector end and the chuck end are respectively positioned at two ends of the connecting wire and outside the winding box, and the connecting wire can be pulled out of the winding box along with the chuck end;
further comprising a dynamic vertical sensor;
the dynamic vertical sensor is sleeved on the connecting line and is positioned between the chuck end and the winding box, and the dynamic vertical sensor is always positioned at the lowest point of the connecting line;
the dynamic vertical sensor is in control connection with the motor, and the motor controls the reel to rotate to wind up the connecting wire when the dynamic vertical sensor sends out a non-vertical signal;
when the connecting wire is pulled out of the winding box, whether the connecting wire falls on the ground or not can be detected according to the fact that whether the dynamic vertical sensor is in contact with the ground or not, so that the motor is automatically controlled to wind the connecting wire, when the connecting wire is wound to the moment that the connecting wire is not in contact with the ground, the dynamic vertical sensor can be changed into a vertical state from an inclined state, and the motor can stop winding the connecting wire.
2. The winding and unwinding device for connecting wires of an insulation resistance tester according to claim 1, wherein the dynamic vertical sensor comprises a cylinder, balls and a vertical handle;
the balls are uniformly arranged at the inner side edge of the cylinder in the circumferential direction, and the connecting wires penetrate into the cylinder and are in rolling connection with the balls;
the vertical handle is positioned outside the cylinder and perpendicular to the radial direction of the cylinder, and is in flexible connection with the cylinder.
3. The winding and unwinding device for connecting wires of an insulation resistance tester according to claim 2, wherein the number of the balls is six.
4. The winding and unwinding device for connecting wires of an insulation resistance tester according to claim 1, wherein the reel comprises an inner ring and an outer ring, the inner ring being connected with the motor;
the outer side of the inner ring is provided with a first ratchet along the circumferential direction, and the inner side of the outer ring is provided with a second ratchet along the circumferential direction;
the first ratchet and the second ratchet are mutually embedded, and the outer ring can rotate relative to the inner ring along the direction opposite to the winding direction of the scroll under the cooperation of the first ratchet and the second ratchet.
5. The winding and unwinding device for connecting wires of an insulation resistance tester according to claim 1, wherein baffles are respectively arranged on two sides of the reel in the axial direction;
the shape of the baffle is adapted to the shape of the winding box;
the spool is rotatable relative to the baffle.
6. The winding and unwinding device for connecting wires of an insulation resistance tester according to claim 5, wherein a connecting block is arranged between two baffles at the edge of the baffles;
the connecting block is provided with a pressure spring towards the axis of the scroll;
a buffer plate is arranged at one end of the pressure spring, which is far away from the connecting block;
the buffer plate is elastically connected with the connecting wire wound at the reel under the action of the pressure spring.
7. The winding and unwinding device for connecting wires of an insulation resistance tester according to claim 6, wherein at least one connecting block is provided, and the positions of the staggered chuck ends exposing the winding box are arranged between the edges of two baffles.
8. The winding and unwinding device for the connecting wire of the insulation resistance tester according to claim 6, wherein a pressure sensor is arranged on the pressure spring, and when the pressure sensor detects that the pressure of the pressure spring is smaller than a preset value, an alarm is triggered to prompt that the connecting wire is used.
9. The winding and unwinding device for connecting wires of an insulation resistance tester according to claim 1, wherein the outer sides of the connector end and the clip end are both movably connected with an insulation protection sleeve.
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