CN212483623U

CN212483623U - Terminal post with a retractable terminal clamp

Info

Publication number: CN212483623U
Application number: CN201922155879.8U
Authority: CN
Inventors: 戚革庆; 丁盛; 杨耸立; 王振南; 徐文; 吴国辉; 战胜林; 潘超
Original assignee: State Grid Corp of China SGCC; State Grid Liaoning Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Liaoning Electric Power Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2021-02-05
Anticipated expiration: 2029-12-05

Abstract

The invention discloses a wiring rod with a probe-type wiring clamp, which is applied to reliably take out test wiring from a higher wiring point during high-voltage test of electrical equipment. The insulation rod provided with the probe-type wire connecting clamp comprises: the retractable wiring clamp comprises a retractable wiring clamp (13), a driving wheel (10), a driving wheel middle shaft (15), an insulating rod (11) and an operating handle (6), wherein the purpose of driving the retractable wiring clamp (13) to be closed by small force is achieved by changing the torque of the driving wheel (10), the direction of a clamp head of the retractable wiring clamp (13) is flexible and adjustable, and the insulation requirement and the reliability requirement can be met; can simultaneously meet various test wiring requirements of 66kV and 220 kV. Compared with the traditional insulating rod, the insulating rod with the probe-type wire connecting clamp has obvious advantages in a plurality of test occasions; when the reliability needs to be guaranteed and the requirement on test wiring is high, the defects of the traditional insulating rod are perfectly made up. Through the application of the insulating rod provided with the probing type wiring clamp, the proportion of ascending operation can be greatly reduced, and the test efficiency is improved.

Description

Terminal post with a retractable terminal clamp

Technical Field

The invention relates to a terminal rod for high-voltage tests of electrical equipment, in particular to a terminal rod provided with a projection type terminal clamp.

Background

With the high-voltage test of the electrical equipment, a large amount of work is required to take out test wiring from the equipment with a higher installation position. Typical of these are the primary ends of 66kV, 220kV open devices, such as: the transformer primary end, the top and bottom lead wire ends of the lightning arrester, the high-medium voltage bushing terminal of the transformer and the like. The wiring distance at this moment is not enough to use high altitude lifting auxiliary equipment such as a bucket arm vehicle, and only manpower can be relied on, so that the field work difficulty and the complexity are greatly increased.

In actual work at present, three wiring modes are generally adopted in the operation:

1. the operator climbs the insulating ladder and clamps the jointing clamp at the jointing point. The volume of the insulating ladder is large, so that the load of field test personnel and instrument equipment is increased; according to the safety requirements of the test site, one person needs to support the insulation ladder when the insulation ladder is used, so that the test efficiency is reduced; when the operation point is transferred, two people are needed to lay down and carry the insulating ladder, and the condition that the insulating ladder is moved for dozens of times on the operation site is not rare, so that a great amount of manpower and time are wasted.

2. The wiring pliers are clamped at the hooks of the traditional insulating rods, and the hooks of the traditional insulating rods are hung at the wiring points. The traditional telescopic insulating rod adopted at present adopts a hook design, the wiring point condition is complex, no proper position is provided for fixing the hook, a reliable fixed point is difficult to find during field operation, and the defects of insecure wiring, poor wiring falling and poor contact are overcome; the insulating rod hook and the rod body are positioned on the same central line, in order to ensure that the rod body is stable and not excessively bent, the rod body needs to be obliquely lapped on equipment, and the field space is easily limited. In addition, the wiring mode needs to be connected by a single-core wire under most conditions, so that a large error exists in a high-precision test (such as a loop resistance test), and the wiring mode cannot be adopted.

3. When equipment such as a high-voltage bushing of a transformer is tested for wiring or a high-precision test (the equipment cannot be connected through a single core wire), wiring personnel need to tie a safety rope and then put the safety rope on the bushing for wiring, and if the wiring personnel relate to wire replacement, the equipment needs to climb up and down for several times or even dozens of times. Not only has high danger, but also reduces the field test efficiency.

Therefore, an auxiliary device suitable for the high-voltage test of electrical equipment, which is convenient to carry, simple to use, flexible in wiring and high in reliability, and can be used for receiving test wiring from a higher position is very needed.

Disclosure of Invention

The invention aims to provide the auxiliary device which is simple to use, good in compatibility, convenient to carry, flexible in wiring and high in reliability, and is convenient and reliable to take test wiring from a higher wiring point during a high-voltage electrical equipment test.

In order to achieve the above object, the present invention provides a terminal block equipped with a probe-out type terminal block, comprising: the device comprises a detecting type jointing clamp, a driving wheel middle shaft, an insulating rod and an operating handle; the tail end of the copper wire holder is connected with the head end of the first middle shaft, the compression spring is sleeved in the first middle shaft and fixed at the tail end of the first middle shaft, the tail end of the first middle shaft is connected with the head end of the second middle shaft through a rotatable bearing, the angle between the first middle shaft and the second middle shaft is changed by rotating the rotatable bearing, so that the opening angle of the detecting wire holder is changed, the tail end of the second middle shaft is fixed on the driving wheel, the middle shaft of the driving wheel penetrates through the driving wheel and is fixed at the top end of the insulating rod, the operating handle is connected with the large-radius wheel shaft of the driving wheel through a nylon rope, the small-radius wheel shaft of the driving wheel is connected with the transverse shaft fixed at the tail end of the outer sleeve of the plier body through a nylon rope, the copper wiring clamp, the compression spring and the first middle shaft are embedded into the clamp body outer sleeve.

In a preferable mode, a sawtooth-shaped wiring groove is formed in the copper wiring clamp, and an elastic metal sheet is embedded in the copper wiring clamp.

In a preferable mode, the insulating rod is of a hollow structure, a groove is formed in the bottom of the insulating rod, an operating handle is arranged at the bottom of the insulating rod, a nylon rope is connected to the middle of the operating handle, the nylon rope is connected with the large-radius wheel shaft of the driving wheel through the hollow insulating rod, and the operating handle is fixed in the buckle when being pulled downwards.

Preferably, the detecting type wire holder rotates around the central shaft of the driving wheel, so that the detecting angle of the detecting type wire holder is changed.

The invention has the beneficial effects that: simple to use, compatible good, convenient to carry, wiring are nimble and when needing to ensure the reliability and having higher requirements to experimental wiring, perfect compensation traditional insulator spindle not enough, can reduce the proportion of the operation of ascending a height by a wide margin, improve test efficiency.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a perspective view of a front view of the present invention;

FIG. 4 is a schematic view of the pliers of the invention in a closed position;

FIG. 5 is a schematic view of the pliers of the present invention in an open position;

FIG. 6 is an explanatory view of an angle adjustment of the wire nipper according to the present invention;

FIG. 7 is a schematic view of a drive wheel mechanism of the present invention;

FIG. 8 is a top view of the drive wheel of the present invention;

fig. 9 is a schematic view of the operating mechanism of the present invention.

Detailed Description

As shown in fig. 1, 2 and 3, the present invention provides a terminal block equipped with a projection type terminal block, comprising: the device comprises a protrusive jointing clamp 13, a driving wheel 10, a driving wheel middle shaft 15, an insulating rod 11 and an operating handle 6; the detecting-out type wire holder 13 comprises a copper wire holder 1, a holder outer sleeve 3, a compression spring 4, a first middle shaft 8 and a second middle shaft 9, wherein the tail end of the copper wire holder 1 is connected with the head end of the first middle shaft 8, the compression spring 4 is sleeved into the first middle shaft 8 and fixed at the tail end of the first middle shaft 8, the tail end of the first middle shaft 8 is connected with the head end of the second middle shaft 9 through a rotatable bearing 14, the rotatable bearing 14 is used for adjusting the opening angle of the detecting-out type wire holder 13, the tail end of the second middle shaft 9 is fixed on the driving wheel 10, and the copper wire holder 1, the compression spring 4 and the first middle shaft 8 are embedded into the holder outer sleeve 3.

The copper wiring clamp 1 is internally provided with a sawtooth-shaped wiring groove and is internally embedded with an elastic metal sheet 2, and the copper wiring clamp is made of high-conductivity metal-copper; an elastic metal sheet 2 is embedded in the jaw to ensure that the jaw is normally opened in a natural state; as shown in figure 4, when the copper jointing clamp 1 is in a closed state, the outer sleeve 3 of the clamp body is matched with and kept normally closed, and the outer sleeve 3 of the clamp body is pushed by the force of the compression spring 4 to resist the force of the elastic metal sheet 2 in the copper jointing clamp 1, so that the aim of normally closing the clamp jaws is fulfilled. As shown in fig. 5, the elastic metal piece 2 in the pliers mouth cannot open the pliers mouth due to the restriction of the outer sleeve 3 of the pliers body, and when the nylon cord 5 pulls the outer sleeve 3 of the pliers body backward, the compression spring 4 is compressed, and the pliers mouth is opened by the force of the elastic metal piece 2 in the copper pliers mouth 1. When the pulling of the clamp outer sleeve 3 is stopped, the clamp outer sleeve 3 is pushed back to the original position by the elastic force of the compression spring 4, the force of pushing back of the compression spring 4 is larger than the force of the elastic metal sheet 2, the copper wiring clamp 1 is closed, and if a wiring board is arranged outside the copper wiring clamp 1, the copper wiring clamp can be firmly clamped on the wiring board.

As shown in fig. 6, the driving wheel center shaft 15 penetrates through the driving wheel 10 and is fixed at the top end of the insulating rod 11, and the top end of the insulating rod 11 is a wedge-shaped structure, and a certain space is reserved in the wedge-shaped structure through size matching, so that the protruding type wire holder 13 rotates around the driving wheel center shaft 15, and the protruding angle of the protruding type wire holder 13 is changed.

Fig. 7 is a schematic diagram of a driving wheel structure of the present invention, fig. 8 is a top view of the driving wheel structure of the present invention, the central axis 15 of the driving wheel passes through the driving wheel 10 and is fixed at the top end of the insulating rod 11, the operating handle 6 is connected with the large-radius wheel axle of the driving wheel 10 through the nylon rope 5, and the small-radius wheel axle of the driving wheel 10 is connected with the transverse axis 12 fixed at the end of the outer sleeve 3 of the caliper body through the nylon rope 5; the driving wheel 10 changes the large force and short stroke of the compression spring 4 into small force and long stroke by changing the moment; labor-saving operation is realized by changing the radius of the driving wheel 10, the closing force of the copper jointing clamp 1 is ensured, and the wiring is stable and reliable. The driving wheel 10 compresses the spring after changing the moment through the large-radius wheel shaft and the small-radius wheel shaft, and can toggle the operating handle with small force to realize the opening and closing of the large-force wiring clamp.

As shown in fig. 9, the insulating rod 11 is a hollow structure, a groove is formed in the bottom of the insulating rod 11 and an operating handle 6 is installed in the groove, a nylon rope 5 is connected to the middle of the operating handle 6, the nylon rope 5 is connected to a large-radius wheel axle of the driving wheel 10 through the hollow insulating rod 11, and for a difficult wire connection operation, the operating handle 6 is fixed in the buckle 7 when being pulled down, so that the jaw of the copper wire connecting clamp 1 is kept normally open; after wiring, only one dial is needed to complete the wiring operation.

When the device is used specifically, the extending angle of the extending type wiring clamp 13 is adjusted by rotating the middle shaft 15 and the wedge-shaped device at the top end of the insulating rod 11, the angle of the first middle shaft 8 and the second middle shaft 9 is changed by rotating the rotatable bearing 14, so that the opening angle of the extending type wiring clamp 13 is changed, a test wiring is connected to a reserved wiring position of the copper wiring clamp 1, the operating handle 6 is pulled to enable the copper wiring clamp 1 to open, the clamp body outer sleeve 3 is pulled backwards essentially, the copper wiring clamp 1 is opened by the elasticity of the elastic metal sheet 2, and after the copper wiring clamp 1 is moved to a wiring position, the operating handle 6 is reset, and wiring can be completed.

The invention has the advantages that:

(1) the jaw of copper wiring pincers 1 is normal close formula, and jaw elastic metal piece 2 provides opening power, can adapt to different opening size demands. The clamp has strong occluding force and can be clamped at a wiring point very reliably;

(2) the top end of the insulating rod 11 can fix the protrusion type wiring clamp 13, and the direction of the clamp head of the protrusion type wiring clamp 13 can be flexibly adjusted, so that the protrusion type wiring clamp is suitable for wiring at any angle;

(3) the opening and closing of the copper wiring clamp 1 is controlled by an operating handle 6 at the tail part of an insulating rod 11;

(4) a wiring groove is formed in the copper wiring clamp 1, so that the copper wiring clamp can be suitable for any test wiring;

(5) the copper wiring clamp 1 is made of copper material, has very good conductivity, and ensures that the influence of voltage drop tests is reduced to be extremely low;

(6) an epoxy resin sleeve is wrapped outside the body of the extended wiring clamp 13 to realize opening and closing of the clamp mouth;

(7) a supporting spring is embedded in the clamp body outer sleeve 3 to provide closing force for the wiring clamp;

(8) the aim of driving and closing the copper pliers 1 with a low force is achieved by means of the transmission wheel 10 changing the torque.

(9) The rod body of the insulating rod 11 is made of epoxy resin glass fiber reinforced plastic, the length of the rod body is about 1500mm, and the length of the rod body can be changed according to actual needs; the interior is hollow, and the interior is provided with a nylon rope 5 for transmission.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. A terminal block provided with a pop-out type terminal block, comprising: the device comprises a protrusive jointing clamp (13), a driving wheel (10), a driving wheel middle shaft (15), an insulating rod (11) and an operating handle (6); wherein the probing type wire holder (13) comprises a copper wire holder (1), a holder outer sleeve (3), a compression spring (4), a first middle shaft (8), a second middle shaft (9), and a copper wire holder (1), the tail end of the copper wire holder is connected with the head end of the first middle shaft (8), the compression spring (4) is sleeved in the first middle shaft (8) and fixed at the tail end of the first middle shaft (8), the tail end of the first middle shaft (8) is connected with the head end of the second middle shaft (9) through a rotatable bearing (14) and the angle between the first middle shaft (8) and the second middle shaft (9) is changed by rotating the rotatable bearing (14), so that the opening angle of the probing type wire holder (13) is changed, the tail end of the second middle shaft (9) is fixed on the driving wheel (10), the middle shaft (15) passes through the driving wheel (10) and is fixed at the top end of the insulating rod (11), the wire connecting clamp is characterized in that the operating handle (6) is connected with a large-radius wheel shaft of the driving wheel (10) through a nylon rope (5), a small-radius wheel shaft of the driving wheel (10) is connected with a transverse shaft (12) fixed at the tail end of the clamp body outer sleeve (3) through the nylon rope (5), and the copper wire connecting clamp (1), the compression spring (4) and the first middle shaft (8) are embedded into the clamp body outer sleeve (3).

2. The terminal rod with a projection type terminal block as claimed in claim 1, wherein the copper terminal block (1) has a zigzag-shaped terminal groove and an elastic metal piece (2) is embedded therein.

3. The terminal rod with the protrusive wire holder according to claim 1, wherein the insulating rod (11) is hollow, the bottom of the insulating rod (11) is recessed and provided with an operating handle (6), a nylon rope (5) is connected to the middle of the operating handle (6), the nylon rope (5) is connected to a large-radius wheel shaft of the driving wheel (10) through the hollow insulating rod (11), and the operating handle (6) is fixed in the buckle (7) when being pulled down.

4. A terminal rod with a projecting wire holder according to claim 1, characterized in that the projecting wire holder (13) is pivoted about the drive wheel axis (15) so as to change the projecting angle of the projecting wire holder (13).