CN205092486U - Draw rod - Google Patents

Abstract

A pull rod is used to solve the problem of inconvenient operation when powering off a transformer. A support rod is hingedly installed on the outer wall of the first rod, and a first plug is provided at the free end of the support rod; a blind hole is arranged at the free end of the support rod, and a lead screw nut is rotated in the blind hole, and a lead screw nut is installed on the lead screw nut. A lead screw is installed in the inner cavity, and a tip is provided at one end of the lead screw; a chute is provided on the first rod, and a second rod is slidably installed in the chute, and a screw is set between the first rod and the second rod. There are locking bolts, a support rod is hingedly installed on the outer wall of the second rod, a second insert block is provided at the free end of the support rod, a positioning hole is provided at the free end of the support rod, and a An ear plate is fixed with pin shafts; a push rod is slidably installed at the free end of the second rod, a positioning bolt is arranged between the push rod and the second rod, and a crotch is provided at the free end of the push rod. The pull rod is easy to use and can be extended to a sufficient length to efficiently realize the power-off operation of the transformer.

Description

a tie rod

technical field

The utility model relates to the technical field of transformer power-off, in particular to a pull rod used for power-off operations on transformers.

Background technique

In substations, it is sometimes necessary to disconnect transformers for inspection and maintenance. Under the existing method, the disconnection operation of the transformer is carried out by a person holding an insulating rod. When the distance is relatively long, it is very inconvenient to carry out the disconnection operation of the transformer by holding the insulating rod.

Utility model content

The purpose of the utility model is to provide a pull rod for solving the problem of inconvenient operation when the transformer is powered off.

The technical solution adopted by the utility model to solve the technical problem is: a pull rod, which is characterized in that it includes a first rod, a support rod, a second rod, a support rod, a push rod and a crotch, and the first rod is A square or circular insulating rod is provided with a first groove on the outer wall of the first rod, and a support rod is hingedly installed in the first groove, and the free end of the support rod is provided with The first plug-in block with a rod plugged in; a blind hole is provided at the free end of the pole, and a lead screw nut is rotated in the blind hole, and a screw nut is installed in the inner cavity of the lead screw nut. A lead screw, a tip is provided at one end of the lead screw towards the outside of the blind hole; a chute is provided on the first rod, a second rod is slidably installed in the chute, and a second rod is installed on the first rod A locking bolt is provided between the second rod and a second groove is arranged on the outer wall of the second rod, and a support rod is hingedly installed in the second groove, and a free end of the support rod There is a second inserting block that fits with the second rod, a positioning hole is provided at the free end of the support rod, an ear plate is provided at one end of the first rod, and a pin is fixed on the ear plate shaft, when the positioning hole of the support rod is sleeved on the pin shaft, the first rod, the support rod and the second rod form a triangle; a push rod is slidably installed on the free end of the second rod, and a push rod is installed on the push rod A positioning bolt is arranged between the rod and the second rod, and a hook is arranged at the free end of the push rod.

Further, a sliding sleeve is provided at the bottom of the blind hole, and a sliding rod is provided at the end of the lead screw away from the top, and the sliding rod is slidably connected with the sliding sleeve.

Further, the tip is a conical structure.

Further, a long slot is provided at the free end of the second rod, and the push rod is placed in the long slot.

Further, reinforcing ribs are provided on the outer wall of the first rod.

The beneficial effects of the utility model are: the pull rod provided by the utility model can be stretched to a sufficient length after the second rod is pulled out from the first rod and the push rod is pulled out from the second rod; After the top is in contact with the ground, the first pole can be erected to reduce the energy wasted when lifting the first pole. After the support rod is pulled out, the free end of the support rod is sleeved on the pin shaft, which can support the second rod and prevent the second rod from bending. The utility model is easy to use and can be extended to a sufficient length so as to efficiently realize the power-off operation of the transformer.

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Figure 2 is a cross-sectional view of the first rod;

Fig. 3 is a partial enlarged view of A place in Fig. 2;

Figure 4 is a cross-sectional view of the second rod;

Fig. 5 is a partial enlarged view of B in Fig. 4;

Fig. 6 is the situation that a stiffener is provided on the first bar;

In the figure: 1 first rod, 11 chute, 12 first groove, 13 support rod, 14 lug plate, 15 pin shaft, 16 threaded hole, 2 hinge, 21 sliding sleeve, 22 lead screw nut, 3 lead screw, 31 Slider, 32 Top, 33 First Insert, 4 Second Rod, 41 Push Rod, 42 Positioning Bolt, 43 Second Groove, 44 Support Rod, 45 Second Insert, 5 Locking Bolt, 6 Hook , 7 positioning holes, 8 ribs.

detailed description

As shown in Figures 1 to 6, the utility model mainly includes a first rod 1, a support rod 13, a screw 3, a sliding rod 31, a second rod 4, a push rod 41, a positioning bolt 42, a support rod 44, a locking Bolt 5 and crotch 6, the utility model is described below in conjunction with accompanying drawing.

As shown in Fig. 1 and Fig. 2, the first rod 1 is a square or circular insulating rod, and a chute 11 is provided on the first rod. Located in the chute and can slide relative to the first rod. The outer wall of the first rod is provided with a first groove 12, in which a pole 13 is hinged 2, the pole is a strip-shaped insulating pole, and the free end of the pole is provided with a first insert 33 , the support rod is inserted on the first rod through the first plug-in block, so as to realize the relative fixing of the support rod and the first rod. A circular blind hole is arranged at the free end of the pole, and a sliding sleeve 21 is arranged at the bottom of the blind hole. A part of the nut is placed in the blind hole and can be rotated in the blind hole. A lead screw 3 is mounted on the lead screw nut, a slide bar 31 is arranged at one end of the lead screw, and the slide bar is slidably installed in the inner cavity of the sliding sleeve, and a top 32 is provided at the other end of the lead screw, which is conical. Structure, when the slider is fully placed in the sleeve, the tip is completely buried in the blind hole. An ear plate 14 is arranged at one end of the first rod, and pin shafts 15 are respectively arranged on both sides of the ear plate.

A second rod 4 is slidably installed in the chute. In order to realize the locking of the second rod and the first rod, a threaded hole 16 is provided on the outer wall of the first rod, and a locking bolt 5 is provided in the threaded hole to lock The screw rod of the tightening bolt bears on the second rod so as to realize the relative fixing of the first rod and the second rod. As shown in Figure 4, the second bar is a circular or square insulating bar, and the outer wall of the second bar is provided with a second groove 43, and in the second groove, a support bar 44 is hinged 2, and the support bar is The strip-shaped insulator is provided with a second plug 45 at the free end of the support rod, and the support rod is inserted on the second rod through the second plug to realize the relative fixing of the second rod and the support rod. The free end of the support rod is provided with a positioning hole 7. After the support rod is extracted from the second rod, the positioning hole on the support rod is placed on the bearing pin. At this time, the support rod, the second rod and the first rod are surrounded by a Triangular, now the support rod, the first rod and the second rod are relatively stable, which can prevent the bending of the second rod when the second rod stretches out longer. A push rod 41 is provided at the free end of the second rod, and the push rod can be relatively movable and arranged on the second rod. Bolt 42. The setting of the push rod can further increase the overall elongated length. The free end of push rod is provided with crotch 6, and the setting of crotch is used for hooking switch, disconnects transformer. In order to ensure the structural strength of the first rod, reinforcing ribs 8 can be provided on the outer wall of the first rod.

When in use, the pole can be pulled out so that the free end of the pole is in contact with the ground to support the first pole. At this time, the first pole is erected on the ground through the pole, and the first pole is swung so that the hook catches the switch Disconnect the transformer. When the site is earthy ground, the lead screw nut can be rotated to move the lead screw out so that the top is exposed. At this time, the top is inserted into the ground to prevent the pole from sliding.

Claims (5)

1. A pull rod, characterized in that it includes a first rod, a pole, a second rod, a support rod, a push rod and a hook, the first rod is a square or circular insulating rod, and the first rod is a square or circular insulating rod. A first groove is provided on the outer wall of a rod, and a support rod is hingedly installed in the first groove, and a first inserting block is provided on the free end of the rod to fit with the first rod; The free end of the pole is provided with a blind hole, and a lead screw nut is rotated in the blind hole, and a lead screw is installed in the inner cavity of the lead screw nut, and the lead screw facing outside the blind hole One end of the bar is provided with a tip; a chute is provided on the first rod, a second rod is slidably installed in the chute, and a locking bolt is arranged between the first rod and the second rod, A second groove is provided on the outer wall of the second rod, and a support rod is hingedly installed in the second groove. The plug-in block is provided with a positioning hole at the free end of the support rod, and an ear plate is provided at one end of the first rod, and a pin shaft is fixed on the ear plate. When the positioning hole of the support rod is sleeved on the After the pin shaft, the first rod, the support rod and the second rod form a triangle; a push rod is slidably installed on the free end of the second rod, and a positioning bolt is arranged between the push rod and the second rod, A hook is provided at the free end of the push rod. 2. A pull rod according to claim 1, characterized in that a sliding sleeve is provided at the bottom of the blind hole, and a sliding rod is provided at the end of the lead screw far away from the top, and the sliding rod is connected with the sliding rod. Set of sliding connections. 3. A pull rod according to claim 1, wherein the tip is a conical structure. 4. A pull rod according to claim 1, wherein a long slot is provided at the free end of the second rod, and the push rod is placed in the long slot. 5. A pull rod according to claim 1, characterized in that, a reinforcing rib is provided on the outer wall of the first rod.