CN106181863A - Aid changed by distribution line fuse fusion tube - Google Patents

Abstract

Auxiliary tool for replacing fuse tube of distribution network line, it includes porcelain tube chuck, connecting rod, threaded ejector rod and threaded ejector rod support, said porcelain tube chuck consists of two halves hingedly connected, each said A semicircular groove is arranged on the half body; the porcelain tube chuck is fixed on the bottom of the connecting rod, the threaded ejector rod bracket is fixed on the top of the connecting rod, and a threaded hole is arranged in the center of the threaded ejector rod bracket, The threaded ejector rod passes through the threaded hole, and a fuse top cover sleeve is slidably arranged on the connecting rod, and the fuse top cover sleeve is detachably connected to the connecting rod through a clamping plate; and A fuse top cover fixing device is arranged in the fuse top cover sleeve; the half body is a casing with an inner opening, and a rubber clip block with the same shape as the half body is placed in the half body. The present invention is applicable to fuses of different types, and truly realizes one-handed operation, saving time and effort.

Description

Distribution network line fuse fuse replacement auxiliary tool

technical field

The invention relates to an auxiliary tool for replacing fuse tubes of distribution network lines.

Background technique

High-voltage current-limiting fuses are mainly used to protect electrical equipment from overload and short-circuit current damage. With the continuous increase of grid load and abnormal lightning weather conditions, high-voltage fuse tubes often blow and need to be replaced. For outdoor fuses replaced in the past, the end covers at both ends are connected by two pressure plates, four screws, and the terminal cover and the porcelain jacket. The replacement process requires two people to cooperate to replace it. The fuse body must be disassembled to the ground. One person Auxiliary to offset the spring force, one person disassembles and assembles the fuse body to complete the replacement of the fuse tube, which is very cumbersome and inefficient.

At present, there are many kinds of fuse replacement aids. The more commonly used tool is a fuse replacement tool, which clamps the porcelain bushing through the porcelain bushing chuck, and then sets the top disc on the screw rod, and is set on the left and right sides by screwing. The nut on the side screw rod controls the up and down movement of the top plate, so as to realize the disassembly of the fuse end cover. However, this structure needs to screw the nuts on the left and right screw rods at the same time. Screwing, moreover, screwing the nut is also more time-consuming and laborious, especially when the staff is operating at high altitude, it greatly consumes the physical energy of the staff.

The Chinese utility model patent with the authorized notification number CN 203813276 U discloses an auxiliary tool for replacing an outdoor high-voltage current-limiting fuse. After tightening, pinch the pull plate 4 and the porcelain bushing chuck with one hand, and clamp the lock 6 on the pull plate 4 and the porcelain bushing chuck 1 with the other hand, and remove the screws on the end cover of the fuse Take off the buckle 6, and pull the pull plate 4 back slowly until the spring force disappears. Although this structure does not need to be operated by screwing the nut, it needs to use the lock catch 6, and the whole process is to pull the pull plate 4 by hand, which is inconvenient to operate. Furthermore, the device cannot accommodate fuses of different types (ie different diameters of the fuses).

The Chinese invention patent with the application publication number CN 105788995 discloses an outdoor PT fuse replacement auxiliary tool and its use method. The device adopts the method of screwing the screw against the top block, although the operation efficiency has been improved, and it adopts The rope can also adapt to different types of fuses, but there are still some problems: 1. The top block cannot be well connected and matched with the fuse top cover. When installing the fuse top cover, you need to hold the fuse top cover first , Wait for the top block to withstand the top cover of the fuse before releasing your hand, which is still very time-consuming and laborious when working at heights; 2. An operating wrench is set at the rear end of the screw rod, and the operating wrench is a horizontal bar, which needs to be twisted halfway It is very time-consuming and labor-intensive when working at heights; 3. A rope is required for fixing, and the installation process is complicated.

Contents of the invention

In order to overcome the above-mentioned problems in the prior art, the purpose of the present invention is to provide an auxiliary tool for replacing fuse tubes of distribution network lines that can be applied to different types of fuses, and truly realize single-handed operation, saving time and effort.

In order to solve the above problems, the present invention adopts the following technical solutions: an auxiliary tool for replacing fuse tubes of distribution network lines, which includes a porcelain tube chuck, a connecting rod, a threaded ejector rod and a threaded ejector rod bracket, and the porcelain tube chuck It consists of two halves that are hingedly connected, each of which is provided with a semicircular groove; the porcelain tube chuck is fixed at the bottom of the connecting rod, and the threaded ejector bracket is fixed at the bottom of the connecting rod At the top, a threaded hole is provided in the center of the threaded ejector rod bracket, and the threaded ejector rod passes through the threaded hole, and it is characterized in that,

A fuse top cover sleeve is slidably arranged on the connecting rod, and the fuse top cover sleeve is detachably connected to the connecting rod through a clamping plate; and a fuse top cover is arranged inside the fuse top cover sleeve. cover fixing device;

The half body is a casing with an inner opening, and a rubber clip block with the same shape as the half body is placed in the half body.

Preferably, the fuse top cover fixing device is an elastic ring attached to the inner wall of the fuse top cover, and the elastic ring is provided with a screw mounting protrusion on the fuse top cover. groove.

Preferably, the fuse top cover fixing device is a suction cup fixed on the bottom of the fuse top cover sleeve.

Preferably, the fuse top cover fixing device is a magnet fixed on the bottom of the fuse top cover sleeve.

Further, the clamping plate includes a clamping groove and a limit rod provided on the clamping plate, and the limit rod includes a blocking rod, a driving rod and a torsion spring, and the torsion spring is arranged between the blocking rod and the driving rod , under normal conditions, the blocking rod is located at the front end of the clamping groove, and the driving rod is located at one side of the clamping plate.

Further, the front end of the rubber clamp is trapezoidal.

Preferably, the threaded ejector rod is a Z-shaped crank.

Preferably, the front end of the handle is pointed, and a groove corresponding to the front end of the handle is provided at the center of the back of the fuse top cover.

Preferably, there are two adjacent porcelain tube chucks.

Preferably, both the porcelain tube chuck and the threaded mandrel support are square.

The beneficial effects of the present invention are:

1. It is convenient and quick to fix with the fuse bottle, which reduces the difficulty of operators working at high altitude, but can quickly disassemble and install the fuse top cover with one hand, saving working time and physical strength in the high-altitude working environment. This shortens the original replacement time of 20-25 minutes to 8-10 minutes, which greatly improves the efficiency, shortens the power outage time, and ensures the interests of the majority of electricity users; it can adapt to fuses of different specifications and models, so it can be repaired outside Personnel do not need to carry multiple models of assistive tools.

2. The slidable fuse top cover does not need to be held and fixed by hand when disassembling and installing the top cover, which is convenient to operate, and the fuse top cover fixing device is set in the fuse top cover to prevent The top cover falls off, and the trouble of holding the top cover by hand during the installation of the top cover is eliminated, and the one-handed operation is fully realized with the threaded ejector rod.

3. Rubber clips of different sizes can be placed in the half body, and the top cover of the fuse can be detachably connected with the connecting rod through the clamping plate. This design can adapt to fuses of different specifications and models; and replace the rubber clips and fuses The top cover is very convenient.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the overall structure schematic diagram of the present invention;

Fig. 3 is the structural representation of rubber clip block of the present invention;

Fig. 4 is a schematic structural diagram of the clamping plate of the present invention;

Fig. 5 is a structural schematic diagram of the threaded mandrel of the present invention;

Fig. 6 is a schematic diagram of the structure of the top cover of the fuse.

In the figure, a porcelain tube chuck 1, a half body 11, a connecting rod 2, a threaded ejector rod 3, a cross bar 31, a threaded ejector rod support 4, a rubber clip 5, a fuse top cover 6, a clamping plate 61, a clip Connecting groove 611 , blocking rod 612 , shifting rod 613 , torsion spring 614 , groove 62 , elastic ring 7 , groove 71 , fuse top cover 8 , screw mounting boss 81 .

detailed description

Below in conjunction with Fig. 1-Fig. 6 specific embodiment of the present invention is described in detail:

The present invention includes a porcelain tube chuck 1, a connecting rod 2, a threaded ejector rod 3 and a threaded ejector rod support 4. The porcelain tube chuck 1 is composed of two half bodies 11 hingedly connected, each of the half bodies 11 is It is provided with a semicircular groove. Described half body 11 is the shell of inside opening, is placed in described half body 11 with the same rubber clip block 5 of half body shape (in order to clearly show the structure of porcelain tube chuck 1, in Fig. 1 and Fig. 2 No rubber clips 5) are placed in the half body 11. The porcelain tube chuck 1 is fixed on the bottom of the connecting rod 2, the threaded ejector rod bracket 4 is fixed on the top of the connecting rod 2, a threaded hole is arranged in the center of the threaded ejector rod bracket 4, and the threaded ejector rod 3 passes through through the threaded hole. A fuse top cover 6 is slidably arranged on the connecting rod 2, and the fuse top cover 6 is detachably connected to the connecting rod 2 through a snap-in plate 61; There is a fuse top cover fixing device inside. In order to facilitate the replacement of the fuse tube of the fuse on the ground and ensure that the auxiliary tool can be placed on the ground smoothly, as shown in Figures 1 and 2, the porcelain tube chuck 1 and the threaded ejector rod support 4 are both square.

As shown in Figure 2, the fuse top cover fixing device is an elastic ring 7 attached to the inner wall of the fuse top cover 6, and the elastic ring 7 is provided with a fuse top cover 8 The screw mounting bosses 81 fit the grooves 71 . The fuse top cover 8 can be inserted into the fuse top cover 6, and is firmly fixed by the elastic ring 7, and will not fall during disassembly. During the installation process, put the fuse top cover 8 first into the fuse top In the cover cover 6, the other hand can not be held on, so the operation is labor-saving. Of course, the fuse top cover fixing device can also adopt the following several embodiments: first, the fuse top cover fixing device is a suction cup fixed at the bottom of the fuse top cover sleeve. In this way, the suction cup can be directly adsorbed on the back of the fuse top cover. In the second type, the fuse top cover fixing device is a magnet fixed on the bottom of the fuse top cover sleeve. The fuse top cover can be directly adsorbed.

As shown in FIG. 3 , the front end of the rubber clip 5 is trapezoidal, so that it can match the gap between the blades of the fuse jar, and securely fix the fuse jar. Further, anti-slip lines are provided in the semicircular groove of the rubber clamp 5 .

In order to quickly replace the top cover of the fuse, the present invention preferably designs the structure of the clamping plate 61, as shown in FIG. A limit lever, the limit lever comprises a stop lever 612, a shift lever 613 and a torsion spring 614, the torsion spring 614 is arranged between the stop lever 612 and the shift lever 613, and under normal conditions, the stop lever 612 is positioned The front end of the slot 611, the driving lever 613 is located on one side of the clamping plate. When installing the top cover of the fuse, it is sufficient to directly align the engaging groove 611 of the engaging plate 61 with the connecting rod 2 and then engage the connecting rod 2 into the engaging groove 611 . When it is necessary to take off the top cover of the fuse, lift the lever 613 with your fingers, the blocking lever 612 is turned down, and the connecting rod 2 is taken out from the engaging groove 611 .

In order to realize continuous operation of the threaded jack 3 with one hand, preferably, as shown in FIG. 5 , the threaded jack 3 is a Z-shaped crank. In this way, the threaded mandrel 3 can be quickly rotated with one hand, which greatly improves the work efficiency. As shown in Figures 1 and 2, a cross bar 31 is arranged at the end of the threaded mandrel 3, and the cross bar 31 is rotated by the rotating hand, but the continuous rotation operation cannot be realized by holding the cross bar 31 with one hand. , After half a circle of rotation, you need to loosen your hand and then twist it, which is very troublesome. In order to make the threaded ejector rod 3 have low rotational resistance, preferably, the front end of the threaded ejector rod 3 is pointed, and a concave hole corresponding to the front end of the threaded ejector rod 3 is provided in the center of the back of the fuse top cover 6 . Slot 62.

In order to ensure that the device is firmly fixed to the porcelain tube, the porcelain tube chuck 1 has two adjacent ones (as shown in Figure 1 and Figure 2, are two porcelain tube chucks 1), two porcelain tube clamps Disc 1 can only use a connection and fixing buckle. The connecting and fixing buckle includes a threaded rod, a wing nut and a block. The threaded rod and wing nut are arranged on the lower half of the porcelain tube chuck 1, and the blocks are set on the porcelain tube. on the upper half of chuck 1.

The above described the preferred embodiments and embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments and embodiments, for those of ordinary skill in the art, without departing from the present invention Under the premise of the concept, several other improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. an aid changed by distribution line fuse fusion tube, and it includes porcelain tube chuck, connecting rod, threaded mandrel and screw thread Push rod support, described porcelain tube chuck includes two the halfbody compositions being articulated and connected, each described halfbody is provided with a semicircle Connected in star；Described porcelain tube chuck is fixed on the bottom of connecting rod, and described threaded mandrel support is fixed on the top of connecting rod, at spiral shell Stricture of vagina push rod support be provided centrally with screwed hole, described threaded mandrel pass described screwed hole, it is characterised in that:

Slidably being provided with a fuse top cover set in described connecting rod, described fuse top cover set is by card adapter plate and institute State connecting rod to removably connect；And it is provided with fuse top cover fixing device in fuse top cover overlaps；

Described halfbody is the housing of interior side opening, internal is placed with the rubber fixture block identical with half shape described half.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described fuse Top cover fixing device is the elastic ring being attached on fuse top cover set medial wall, and is provided with on described elastic ring and fuses The groove that screw mounting boss on device top cover coordinates.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described fuse Top cover fixing device is to be fixed on the sucker bottom fuse top cover set.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described fuse Top cover fixing device is to be fixed on the Magnet bottom fuse top cover set.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described card adapter plate Including buckling groove and the gag lever post arranged in card adapter plate, described gag lever post includes that pin, driving lever and torsion spring, described torsion spring are arranged on In the middle of pin and driving lever, under normal condition, described pin is positioned at the front end of buckling groove, and described driving lever is positioned at the side of card adapter plate.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described rubber presss from both sides The front end of block is trapezoidal.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described screw thread top Bar is Z-type crank.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described crank Front end is pointed, is provided centrally with the groove corresponding with described crank front end at the back side of fuse top cover set.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described porcelain tube card Dish has adjacent two.

Aid changed by distribution line fuse fusion tube the most according to claim 1, it is characterised in that: described porcelain tube Chuck and threaded mandrel support are square.