CN205210130U - Supporting coiling and uncoiling device of ground connection megger - Google Patents

Abstract

The utility model discloses a wire receiving and releasing device for a grounding meter, which belongs to the technical field of transmission line operation and maintenance devices, and includes a runner, which is located on the left and right sides of the grounding meter, and the runner can flexibly rotate around the grounding meter , the rocker on the top of the grounding wire rocker is connected to the rocker, and the rocker can be removed from the rocker. There is a small hole on the rim of the runner, and the small hole penetrates the rim of the runner. , the shape and size of the small hole are consistent with the section of the crank handle. There is a spring device inside the runner. The runner and the grounding wire shaker use the same crank handle. The shaking handle can realize the rapid tightening and unfolding of the current line and the voltage line, and the built-in spring device can realize automatic winding, which improves the measurement efficiency of the transmission line tower grounding resistance, reduces the number of laborers, and can be widely used in the pole tower grounding resistance measurement. .

Description

Grounding shaker supporting take-up and release device

technical field

The utility model relates to a wire receiving and releasing device, in particular to a wire receiving and releasing device matched with a grounding meter, belonging to the technical field of power transmission line operation and maintenance devices.

Background technique

The purpose of tower grounding resistance measurement is to check whether the grounding resistance of the tower is qualified, and whether it can ensure that the lightning current can be quickly leaked into the ground when the line generates lightning overvoltage, so that the line will not suffer from overvoltage. The grounding resistance measurement steps are:

(1) Wiring and connection. Insert a voltage grounding probe P' at a distance of 2.5 times the length of the grounding body from the grounding down-conductor, and drive a current grounding probe C' at a distance of 4 times the length of the grounding body from the grounding down-conductor. The connecting wires connect P' with the P terminal on the instrument, C' with the C terminal on the instrument, and the grounding down-lead wire with the E terminal button.

(2) Measure. First adjust the instrument magnification knob to the highest gear, slowly and evenly shake the handle of the hand-cranked generator, and at the same time turn the "measurement dial" so that the pointer of the galvanometer points to the center line. At this time, the multiple of the reading on the measuring dial multiplied by the magnification knob is the measured grounding resistance. If the reading on the measuring dial is less than 1 at this time, reduce the multiple of the magnification knob and measure again according to the above method.

(3) Take up the line.

In order to ensure the accuracy of the measurement, the connection line of P'C' cannot be parallel to the line direction, nor can it be parallel to the underground thermal pipeline, and the depth of P'C' driven into the ground should not be less than 0.5m. When the underground grounding body is very long, When it is impossible to make the measurement connection line reach 2.5 and 4 times the length of the grounding body, the empirical data length can be used, that is, the voltage line is 20m, and the current line is 40m. The 20m-long voltage line is coiled and unfolded. The traditional winding and unwinding method is completely manual winding, and it is prone to winding and knotting problems during the unfolding process, which delays time and affects work efficiency. Some of the winding device parts are large and inconvenient to carry. , such as the public number CN201717586U discloses a kind of power transmission line tower ground shaker wire take-up device, when taking up the line, it is necessary to transport the box body to the work area, and it needs relevant personnel to cooperate with the operation, and the program is cumbersome.

Utility model content

The purpose of the utility model is to provide a grounding meter matching retracting and releasing device, combined with the characteristics of the grounding meter itself, it is installed on both sides of the grounding meter, which is easy to carry. The voltage line is quickly tightened and extended, which improves the measurement efficiency of the transmission line tower grounding resistance and reduces the number of workers.

The grounding meter described in the utility model is equipped with a take-up and release device, which includes a take-up and take-off device body. The take-up and take-off device body includes a runner, and the runners are located on the left and right sides of the ground wire shaker. The watch rotates flexibly, the rocker on the top of the grounding wire shakes the watch and the handle is a movable connection, the handle can be removed from the rocker, and there is a small hole on the rim of the runner, and the small hole penetrates the runner The shape and size of the hole are consistent with the shape and size of the tremolo section.

The rotating wheel is used to place the current wire and voltage wire. The rotating wheel is located on the left and right sides of the ground wire shaker, which will not affect the normal operation of the ground wire shaker. The runner can rotate flexibly around the ground wire shaker to realize the current wire and voltage. The tightening and unfolding of the line can improve the measurement efficiency of the grounding resistance of the transmission line tower. The special handle can be designed as a hexagonal prism, the small hole is designed as a regular hexagon, the cross section of the handle is a regular hexagon and the size of the small hole is the same, the handle can be removed from the rocker and placed on the runner wheel The small hole on the outside of the body realizes the rotation of the runner. The runner and the ground wire shaker use the same crank handle. Different placement positions of the handle can control the activity state of the runner, which is simple and convenient, and saves materials.

The inner side of the rim of the runner is also provided with small holes, which are distributed symmetrically with respect to the center point of the runner, and are used to place the handle on the small hole to realize the transition of the active state of the runner. When the friction traction rotates or is fixed, the crank handle can be placed here to meet different needs in the process of taking up and paying off the line.

The runner is provided with a spring device inside, the spring device surrounds the runner one circle, the spring device can be curled up freely, and the spring device uses elastic force to realize the automatic wire take-up function.

A changeover switch is provided below the ground wire shaker, the changeover switch is connected to a spring device, and the changeover switch is used to realize selective switching between automatic and manual states, adapting to different working environments.

The center of the runner is provided with a threaded hole, and the threaded hole is equipped with a fixing bolt, and the fixing bolt is used to fix the runner on the ground wire rocker, and the fixing method is simple and firm.

The wheel groove of the runner is concave, which prevents the voltage wire or current wire from slipping on the runner, and effectively protects the voltage wire and the current wire.

The runner is made of wooden material, which is light and firm, and easy to install and carry.

Compared with the prior art, the utility model has the following beneficial effects:

Provides a grounding meter supporting take-up and release device, combined with the characteristics of the grounding meter itself, it is installed on both sides of the grounding meter, which is easy to carry, and can realize the automatic winding function at the same time. When the grounding meter is used to measure the grounding resistance, the current The line and voltage line are quickly tightened and unfolded, which improves the efficiency of the measurement of the grounding resistance of the transmission line tower and reduces the number of workers, and can be widely used in the measurement of the grounding resistance of the tower.

Description of drawings

Fig. 1 is the front view after the utility model is installed;

Fig. 2 is the top view after the utility model is installed;

The left side view after Fig. 3 installation of the utility model;

The bottom view after Fig. 4 installation of the utility model;

Fig. 5 is a sectional view of the runner in the utility model;

Fig. 6 is the left view of the runner in the utility model;

Among the figure: 1, ground rocking table 2, runner 3, rocking handle 4, rocking bar 5, changeover switch 21, threaded hole 22, spring device 23, aperture 24, wheel groove 25, fixing bolt.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

As shown in Figures 1-6, the grounding meter described in the utility model is equipped with a retracting and releasing device, including a runner 2, which is located on the left and right sides of the grounding meter 1, and will not affect the grounding meter 1. In normal operation, the runner 2 can flexibly rotate around the ground wire rocker 1, the rocker 4 above the ground wire rocker 1 is connected to the rocker 3, and the rocker 3 can be removed from the rocker 4 , the rim of the runner 2 is provided with an aperture 23, the aperture 23 penetrates the rim of the runner 2, the aperture 23 is consistent with the shape and size of the crank handle 3 section, and the voltage wire or current The wire is placed on the runner 2, and the handle 3 can not only meet the measurement work of the ground wire shaker 1, but also place the handle 3 at the small hole 23 to drive the runner 2 to rotate, so as to realize the collection of the current wire and the voltage wire. It can be tightened and extended, which improves the measurement efficiency of transmission line tower grounding resistance.

The inner side of runner 2 rim is also provided with small hole 23, and small hole 23 is distributed symmetrically with respect to the central point of runner 2, when runner 2 is rotated by frictional traction or fixed not to turn, can be placed on crank 3 Here, it adapts to different needs in the process of take-up and pay-off.

A spring device 22 is arranged inside the runner 2, and the spring device 22 surrounds the rim 2 once. The spring device 22 can be freely curled up, and the freely curled spring device 22 can realize the automatic winding function by utilizing elastic force.

The bottom of the grounding wire shaking table 1 is provided with a changeover switch 5, and the changeover switch 5 is connected with the spring device 22. When the automatic take-up and release line needs to be carried out, the change-over switch 5 can be turned to start the spring device 22 to realize the automatic take-up and release line.

The runner 2 center is provided with threaded hole 21, and threaded hole 21 place is equipped with fixing bolt 25, and when runner 2 is installed, fixing bolt 25 is installed in threaded hole 21 places, realizes the fixing of runner 2.

The wheel groove 24 of the runner 2 is concave, and the current wire and the voltage wire will not slip off on the runner 2, and the operation of protecting the voltage wire and the current wire can also be played.

The runner 2 adopts wooden material, which has the characteristics of convenient installation and light material, which is beneficial to carry.

Example

As a preferred example, use wooden materials to make two runners 2 whose side dimensions are h×a=150mm×170mm, radius r=130mm, thickness h=30mm, and wheel groove 24 sunken inward, at the center of runner 2 during manufacture Threaded hole 21 is reserved at the center, and fixed bolts 25 of the same type are provided, a regular hexagonal small hole 23 is cut out on the rim of the runner 2, and 2 small holes are cut out in the middle part of the inner side of the rim of the runner 2 23. The rocker 4 on the top of the rocker meter 1 is connected to the rocker 3 through a card slot, and the rocker 3 can be pulled out from the rocker 4. The rocker 3 is specially made in the shape of a hexagonal prism, and is used together with the small hole 23. The runner 2 is installed on the left and right sides of the ground wire shaker 1 through the fixing bolt 25. After the installation is completed, the runner 2 can be flexibly rotated. In the small hole 23 on the rim of the runner 2, turn the crank handle 3 to spread the voltage line and the current wire on the runner 2. Placed at the small hole 23 on the inner side of the rim of the runner 2, it can adapt to different needs in the process of retracting and discharging. During the rotation of the handle 3, the internal spring device 22 is driven at the same time. When the wire is retracted, toggle the switch 5. Start the spring device 22 to automatically return to the original state, automatically retract the current line and the voltage line, improve the measurement efficiency of the grounding resistance of the transmission line tower, and reduce the number of workers.

Adopting the grounding meter matching retracting and releasing device of the embodiment of the utility model described above in conjunction with the accompanying drawings, the current line and voltage line are quickly tightened and unfolded when the grounding meter measures the grounding resistance, and the power transmission line tower is improved. Ground resistance measures efficiency. However, the invention is not limited to the described embodiments. Without departing from the principle and spirit of the present utility model, the changes, modifications, replacements and deformations of the embodiments still fall within the protection scope of the present utility model.

Claims (7)

1. A kind of supporting take-up and pay-off device of grounding shaker, comprise take-up and take-off device body, it is characterized in that: described take-up and take-off device body comprises runner (2), and runner (2) is positioned at grounding wire shaker ( On the left and right sides of 1), the runners (2) can flexibly rotate around the ground wire rocker (1), and the rocker (4) above the ground wire rocker (1) and the rocker (3) are movable connected, the handle (3) can be removed from the rocker (4), and the rim of the runner (2) is provided with a small hole (23), and the small hole (23) penetrates the rim of the runner (2) , aperture (23) is consistent with the shape and size of rocking handle (3) section. 2. The wire-retracting and releasing device for the grounding meter according to claim 1, characterized in that: the inner side of the rim of the runner (2) is also provided with a small hole (23), and the small hole (23) is opposite to They are distributed symmetrically at the center point of the runner (2). 3. The wire retracting and releasing device for the grounding meter according to claim 1, characterized in that: the runner (2) is provided with a spring device (22) inside, and the spring device (22) surrounds the runner (2) One turn, spring device (22) can curl up freely. 4. The wire retracting and releasing device for the grounding meter according to claim 1, characterized in that: a transfer switch (5) is provided under the grounding meter (1), and the transfer switch (5) is connected to a spring device (twenty two). 5. According to claim 1, 2 or 3, the matching wire receiving and releasing device for the grounding meter is characterized in that: the center of the runner (2) is provided with a threaded hole (21), and the threaded hole (21) is Comes with fixing bolts (25). 6. The wire take-up and pay-off device for the grounded meter according to claim 1, 2 or 3, characterized in that: the wheel groove (24) of the runner (2) is concave. 7. The wire take-up and release device for the grounded meter according to claim 1, 2 or 3, characterized in that: the runner (2) is made of wood material.