CN107910809A - A kind of hot line maintenance insulated ladder - Google Patents

Abstract

The application provides a kind of hot line maintenance insulated ladder, including insulated ladder body, and one end of insulated ladder body is equipped with the hook hung on power transmission line, and the other end is equipped with height adjustment device；Height adjustment device includes cross bar, connecting rod and support plate, and the outside of cross bar is cased with casing, and one end of insulated ladder body is connected with casing；Connecting rod is arranged on the both ends of cross bar, and one end of connecting rod is fixedly connected with cross bar, and the other end is hinged by first rotating shaft and support plate；One end of first rotating shaft through support plate is equipped with the first bevel gear, and support plate is equipped with the second shaft, and the second shaft is equipped with the second bevel gear being meshed with the first bevel gear through one end of support plate, and the second bevel gear is fixedly connected with the second shaft；The second shaft, which need to only be rotated, to drive insulated ladder body to swing up and down by connecting rod, and the height at adjustment insulated ladder both ends, makes operating personnel pass in and out electric field and walk " downhill path " all the time, can reduce labor intensity, save operating personnel's muscle power.

Description

Insulated flat ladder for live working on transmission lines

technical field

The application relates to the field of live work on high-voltage transmission lines, in particular to an insulating flat ladder for live work on transmission lines.

Background technique

Live work on transmission lines can eliminate the defects of the transmission line itself without losing load on the transmission line, and can effectively improve the reliability of power supply in the power grid. One of the technical difficulties of live work is how to enter the electric field. At present, one of the common methods of entering the electric field for live work on high-voltage transmission lines is the method of entering the electric field with a flat ladder. The passage for workers to enter the electric field.

The flat ladder in the prior art is only an insulating support device, and the two ends connected with the wire and the cross-arm of the tower are fixed connection points, and the height cannot be adjusted. Once the wire and the cross-arm of the tower are not on the same level, it will cause two There is a height difference between the ends, so that the live workers spend a lot of physical strength to enter and exit the electric field along the flat ladder.

Contents of the invention

The application provides an insulating flat ladder for live work on transmission lines, including an insulating flat ladder body, one end of the insulating flat ladder body is provided with a hook for hanging on the power line, and it is characterized in that: the other end of the insulating flat ladder body One end is equipped with a height adjustment device;

The height adjustment device includes a cross bar, a connecting rod and a support plate, the outside of the cross bar is sleeved with a sleeve, and the sleeve is rotatably connected with the cross bar, and the end of the insulating flat ladder body is away from the hook connected to the sleeve;

The connecting rod is arranged at both ends of the cross bar, one end of the connecting rod is fixedly connected to the cross bar, and the other end is hinged to the support plate through a first rotating shaft, and the first rotating shaft is connected to the supporting plate. The plate is threadedly connected, and the first rotating shaft is fixedly connected with the connecting rod;

One end of the first rotating shaft passing through the support plate is provided with a first bevel gear, the first bevel gear is fixedly connected with the first rotating shaft, a second rotating shaft is provided on the supporting plate, and the second The rotating shaft is threadedly connected with the support plate, and one end of the second rotating shaft passing through the support plate is provided with a second bevel gear meshed with the first bevel gear, and the second bevel gear is connected to the second bevel gear. The shaft is fixedly connected;

Rotating the second rotating shaft can drive the insulating flat ladder body to swing up and down through the connecting rod.

Optionally, the support plate is provided with a locking device fixed to the cross-arm of the communication tower, the locking device includes an arc-shaped clamp fixed to the cross-arm of the communication tower, and the middle part of the arc-shaped clamp passes through the first The three rotating shafts are rotatably connected to the support plate, and the inner concave part of the arc-shaped clamping plate is provided with a baffle;

The arc-shaped clamping plate is provided with a fixed rod, and the fixed rod extends through the arc-shaped clamping plate to the outside of the arc-shaped clamping plate, and the side of the support plate close to the convex surface of the arc-shaped clamping plate A fastener is provided, and the fastener is connected to the third rotating shaft through a steel wire rope, and a bending part is provided on the steel wire rope;

A first arc-shaped plate and a second arc-shaped plate matched with the first arc-shaped plate are arranged on the support plate, and the first arc-shaped plate and the second arc-shaped plate can enclose a first arc-shaped plate. Close the aperture, one end of the first arc-shaped plate is rotationally connected with the support plate through the fourth rotating shaft, and the other end is provided with two protruding clamping parts, and a clamping part is fixed between the two clamping parts. Arbors;

When the first arc-shaped plate is rotated, the clamping rod is clamped with the baffle plate, and at this time, the bending part of the wire rope is clamped with the fixed rod.

Optionally, a through hole is provided on the underside of the arc clamp on the support plate, a push rod is provided in the through hole, a spring is provided on the inner wall of the through hole, and one end of the spring is connected to the through hole. The inner wall of the hole is fixedly connected, and the other end is connected with the ejector rod;

When the first arc-shaped plate is rotated, when the engaging rod is engaged with the baffle, the upper end of the push rod abuts against the baffle.

Optionally, the insulating flat ladder body includes two main rods, and a plurality of ladder rails are evenly distributed between the two main rods;

The main rod includes an outer main rod and an inner main rod, the outer main rod is sleeved on the outside of the inner main rod, and the upper and lower sides of the outer main rod and the inner main rod are provided with matching wheel grooves, A locking bolt is also included, and the locking bolt passes through the outer main rod and the inner main rod to fix the outer main rod and the inner main rod together.

Optionally, an insulating seat is provided on the body of the insulating flat ladder, and two sets of insulating pulleys matching the corresponding wheel grooves on the main pole are respectively provided on the upper and lower sides of the bottom of the insulating seat, and the insulating pulleys Located in the wheel grooves on the upper and lower sides of the main rod.

Optionally, a protective cover is provided on the outside of the insulating seat, and the length of the protective cover along the length direction of the insulating flat ladder body is cm, and the length of the protective cover along the length direction of the insulating flat ladder body is cm. There are working windows on both sides, and infrared sensors are arranged on the protective cover;

It also includes a controller and an alarm, the alarm and the infrared sensor are both electrically connected to the controller, and the controller controls the alarm to alarm after receiving the signal from the infrared sensor.

Optionally, a U-shaped bar is provided on the top of the second rotating shaft, and a locking screw is provided on the U-shaped bar, and the locking screw passes through the U-shaped bar, so that the locking screw and the The U-shaped groove surrounds the second closed pores.

Optionally, the bottom of the push rod is arranged on the pull ring.

Optionally, the extending direction of the axis of the first rotating shaft is perpendicular to the extending direction of the axis of the second rotating shaft.

Optionally, the hook is an arc-shaped hook, and the inner concave part of the hook is provided with a groove matching the power line.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, one end of the body of the insulating flat ladder is provided with a height adjustment device. The height adjustment device includes a cross bar, a connecting rod and a support plate. The end of the body away from the hook is connected to the casing; the connecting rod is arranged at both ends of the cross bar, one end of the connecting rod is fixedly connected to the cross bar, and the other end is hinged to the support plate through the first rotating shaft, and the first rotating shaft is screwed to the support plate. The first rotating shaft is fixedly connected with the connecting rod; the end of the first rotating shaft passing through the support plate is provided with a first bevel gear, the first bevel gear is fixedly connected with the first rotating shaft, the supporting plate is provided with a second rotating shaft, and the second rotating shaft is connected to the supporting plate. The plate is threadedly connected, and one end of the second rotating shaft passing through the support plate is provided with a second bevel gear meshed with the first bevel gear, and the second bevel gear is fixedly connected with the second rotating shaft; since the first bevel gear meshes with the second bevel gear , just turn the second rotating shaft to drive the body of the insulating flat ladder to swing up and down through the connecting rod, so that the height of both ends of the insulating flat ladder body can be adjusted, so that live workers always go "downhill" when entering and leaving the electric field through the insulating flat ladder, which can reduce labor costs. Strength, saving the physical strength of the operator.

2. The supporting plate in the present invention is provided with a locking device fixed to the cross-arm of the communication tower. The locking device includes an arc-shaped clamp fixed to the cross-arm of the communication tower. The middle part of the arc-shaped clamp passes through the third rotating shaft and The support plate is rotatably connected, and the inner recess of the arc-shaped clamp is provided with a baffle; the arc-shaped clamp is provided with a fixed rod, and the fixed rod passes through the arc-shaped clamp and extends to the outside of the arc-shaped clamp, and the support plate is close to the arc. A fastener is provided on one side of the convex surface of the clamping plate, and the fastener is connected with the third rotating shaft through a steel wire rope, and a bending part is provided on the steel wire rope; The matching second arc-shaped plate, the first arc-shaped plate and the second arc-shaped plate can enclose the first closed aperture, and fix the cross arm of the communication tower in the first closed aperture; one end of the first arc-shaped plate passes through the fourth The rotating shaft is rotatably connected to the support plate, and the other end is provided with two protruding clamping parts, and a clamping rod is fixedly connected between the two clamping parts; When the shaped plate is closed to close the locking device, it is only necessary to turn the first arc plate so that the clamping rod is clamped with the baffle plate, and at the same time, the bending part of the wire rope is clamped with the fixed rod to avoid the rotation of the curved clamping plate and realize The arc clamping plate is tightly connected with the first arc plate, thereby fixedly connecting the locking device with the cross arm of the communication tower, preventing the height adjustment device from slipping off the cross arm, and improving the safety of working at heights.

3. In the present invention, a through hole is provided on the underside of the arc clamp on the support plate, a push rod is provided in the through hole, and a spring is provided on the inner wall of the through hole. One end of the spring is fixedly connected with the inner wall of the through hole, and the other end is connected with the inner wall of the through hole. The ejector rod is connected; in the actual operation process, when the locking device needs to be closed, it is only necessary to turn the first arc-shaped plate. When the clamping rod is clamped with the baffle plate, the spring is stretched, and under the force of the spring’s resilience, The upper end of the ejector rod abuts against the baffle, which can prevent the clamping rod from being separated from the baffle, can increase the locking force of the locking member, and improves the safety of high-altitude operations.

4. In the present invention, the body of the insulating flat ladder includes two main rods, and a plurality of ladder shelves are evenly distributed between the two main rods; the main rods include an outer main rod and an inner main rod, and the outer main rod is sleeved on the outside of the inner main rod , the upper and lower sides of the outer main rod and the inner main rod are equipped with matching wheel grooves, and the locking bolts are also included. The locking bolts pass through the outer main rod and the inner main rod to fix the outer main rod and the inner main rod. Together. By setting the outer main rod and the inner main rod, the outer main rod is sleeved on the outer side of the inner main rod, and is fixedly connected with the inner main rod by locking bolts. In the actual operation process, the insulating flat ladder can be adjusted arbitrarily according to the actual conditions on site. The length can greatly improve the adaptability of the insulating flat ladder, and at the same time, it can facilitate the live workers to install the flat ladder on the pole tower.

5. In the present invention, an insulating seat is provided on the body of the insulating flat ladder. Two sets of insulating pulleys matching the corresponding wheel grooves on the main pole are respectively provided on the upper and lower sides of the bottom of the insulating seat. The insulating pulleys are located on the upper and lower sides of the main pole. in the wheel well. By setting the insulated seat, the insulated pulley of the insulated seat is located in the wheel groove of the main rod, and can be slidably connected with the wheel groove, which can prevent the insulated seat from falling out of the insulated flat ladder, and at the same time reduce the contact between live workers when entering and leaving the electric field. The friction of the insulating flat ladder can reduce the labor intensity and save the physical strength of the personnel.

6. In the present invention, a protective cover is provided on the outside of the insulating seat, and the length of the protective cover along the length extension direction of the insulating flat ladder body is 50 cm, and the protective cover is provided with working windows along the front and rear sides of the length direction of the insulating flat ladder body , the protective cover is provided with an infrared sensor; it also includes a controller and an alarm, the alarm and the infrared sensor are electrically connected to the controller, and the controller controls the alarm to alarm after receiving the signal from the infrared sensor. Since the live workers are working live between the transmission lines, in order to prevent the operators from stretching their limbs in a large area during the operation, resulting in short circuit between the transmission lines and electric shock, the electric safety work regulations require the range of activities of the workers during the live work. No more than 50cm. In the prior art, other staff standing on the ground often remind live workers not to exceed the range of activities through visual inspection. Due to inaccurate visual inspection, the range of activities of live workers will exceed 50cm. Cause the risk of electric shock due to the short circuit of the power transmission line. The present invention arranges a protective cover on the outside of the insulating seat. In this embodiment, the protective cover is a square shell with a side length of 50cm. There are working windows on the opposite sides of the sliding body of the flat ladder, and an infrared sensor is installed on the frame of the protective cover. When the limbs of the live operator exceed the frame edge of the protective cover, the infrared sensor will send out a signal, and the controller will control it after receiving the signal. The alarm sends out an alarm, which can automatically remind the live workers to pay attention to the range of activities not to exceed the outside of the protective cover, which can effectively avoid the occurrence of electric shock.

7. In the present invention, a U-shaped bar is provided on the top of the second shaft, and a locking screw is provided on the U-shaped bar. The locking screw passes through the U-shaped bar, so that the locking screw and the U-shaped groove form a second closed hole. In the actual operation process, the operator can use the iron rod to insert the iron rod into the second closed hole, and only need to use the lever principle to rotate the iron rod to realize the rotation of the second rotating shaft, which can save the physical strength of the operator.

8. In the present invention, a pull ring is provided at the bottom of the ejector rod, which is convenient for the operator to hold the ring and pull the ejector rod.

9. In the present invention, the extension direction of the axis of the first rotating shaft is perpendicular to the extending direction of the axis of the second rotating shaft, which can facilitate the meshing of the first bevel gear and the second bevel gear.

10. In the present invention, the hook is an arc-shaped hook, and the inner concave part of the hook is provided with a groove matching the transmission line, which can improve the fastness of the connection between the hook and the transmission line, and prevent the hook from sliding back and forth along the length of the transmission line.

Description of drawings

In order to more clearly illustrate the background technology or the technical solution of the present invention, the following is a brief introduction to the prior art or the accompanying drawings used in specific embodiments; obviously, the following drawings in conjunction with specific embodiments are only for To facilitate the understanding of the embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort;

Fig. 1 is a schematic diagram of the overall assembly structure of the insulating flat ladder provided by the embodiment of the present invention;

Fig. 2 is a schematic structural view of a height adjustment device provided by an embodiment of the present invention;

Fig. 3 is a schematic structural view of an arc-shaped pallet provided by an embodiment of the present invention;

Fig. 4 is a front structural schematic diagram of a first curved plate provided by an embodiment of the present invention;

Fig. 5 is a schematic side view of the first curved plate provided by the embodiment of the present invention;

Fig. 6 is a top view structural schematic diagram of the latching provided by the embodiment of the present invention;

Fig. 7 is a schematic structural diagram of the clamping connection of the locking member provided by the embodiment of the present invention;

Fig. 8 is a schematic diagram of the opening of the locking member provided by the embodiment of the present invention;

Fig. 9 is a schematic structural view of an insulating flat ladder body provided by an embodiment of the present invention;

Fig. 10 is a schematic side view of the body of the insulating flat ladder provided by the embodiment of the present invention;

Fig. 11 is a schematic structural diagram of a U-shaped bar provided by an embodiment of the present invention;

Among them: 1-insulated flat ladder body, 2-hook, 3-cross bar, 4-connecting rod, 5-support plate, 6-sleeve, 7-first shaft, 8-first bevel gear, 9-second Rotating shaft, 10-the second bevel gear, 11-arc clamping plate, 12-the third rotating shaft, 13-baffle plate, 14-fixed rod, 15-fastener, 16-wire rope, 161-bending part, 17- The first arc-shaped plate, 18-the second arc-shaped plate, 19-the first closed hole, 20-the fourth rotating shaft, 21-the clamping part, 22-the clamping rod, 23-the ejector rod, 24-the spring, 25- Pull ring, 26-groove, 27-U-shaped rod, 28-lock screw, 29-second closed hole, 30-insulated seat, 31-insulated pulley, 32-protective cover, 33-infrared sensor, 34- Alarm, 35-main rod, 351-outer main rod, 352-inner main rod, 36-ladder, 37-wheel groove, 38-lock bolt.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

Figure 1 is a schematic diagram of the overall assembly structure of the insulating flat ladder provided by the embodiment of the present invention. As shown in Figure 1, the insulating flat ladder for live work on transmission lines provided by the embodiment of the present invention includes an insulating flat ladder body 1, and One end is provided with a hook 2 hanging on the transmission line, the hook 2 is an arc-shaped hook, and the inner recess of the hook 2 is provided with a groove 26 matching the diameter of the transmission line, which can improve the connection fastness between the hook 2 and the transmission line. Prevent the hook 2 from sliding back and forth along the length of the power line.

Fig. 2 is a schematic structural view of the height adjustment device provided by the embodiment of the present invention. As shown in Fig. 2, the other end of the insulating flat ladder body 1 is provided with a height adjustment device, and the height adjustment device includes a cross bar 3, a connecting rod 4 and a support plate 5. The outside of the cross bar 3 is covered with a sleeve 6, which is rotationally connected to the cross bar 3, and the end of the insulating flat ladder body 1 away from the hook 2 is connected to the sleeve 6. In this embodiment, the insulating flat ladder body can be One end of 1 is welded on the casing 6.

The connecting rod 4 is arranged at both ends of the cross bar 3, and the length extending direction of the connecting rod 4 is perpendicular to the length extending direction of the cross bar 3. One end of the connecting rod 4 is fixedly connected with the cross bar 3, and the other end is connected with the first rotating shaft 7 and The support plate 5 is hinged, the two sides of the support plate 5 are provided with side edges, the first rotating shaft 7 passes through the side of the support plate 5 and is threadedly connected with the support plate 5, and the first rotating shaft 7 passes through the connecting rod 4 and is fixedly connected with the connecting rod 4 The first rotating shaft 7 passes through the support plate 5 and is provided with a first bevel gear 8 at one end away from the connecting rod 4, the first bevel gear 8 is fixedly connected with the first rotating shaft 7, and the support plate 5 is provided with a second rotating shaft 9, and the second The rotating shaft 9 passes through the supporting plate 5 and is threadedly connected with the supporting plate 5, and one end of the second rotating shaft 9 passing through the supporting plate 5 is provided with a second bevel gear 10 meshed with the first bevel gear 8, and the second bevel gear 10 is connected to the second The rotating shaft 9 is fixedly connected.

In the actual operation process, since the first bevel gear 8 is engaged with the second bevel gear 10, only the second rotating shaft 9 can be rotated to drive the insulating flat ladder body 1 to swing up and down through the connecting rod 4, thereby changing the distance between the two ends of the insulating flat ladder body 1. The height difference makes live workers go downhill all the time when entering the electric field through the insulating flat ladder, which can reduce labor intensity and save the physical strength of operators.

In this embodiment, the transmission torque between the first bevel gear 8 and the second bevel gear 10 can be adjusted by replacing the second bevel gear 10 with a different diameter, and the connecting rod can be driven by rotating the second rotating shaft 9 with a small force 4 To achieve a relatively large swing, saving labor intensity.

Fig. 3 is a schematic structural view of the curved pallet provided by the embodiment of the present invention. As shown in Fig. 3, a locking device fixed to the cross arm of the communication tower is provided on the support plate 5, and the locking device includes a locking device fixed to the cross arm of the communication tower. The arc-shaped clamping plate 11, the middle part of the arc-shaped clamping plate 11 is rotationally connected with the support plate 5 through the third rotating shaft 12, and the inner concave portion of the arc-shaped clamping plate 11 is provided with a baffle plate 13.

The arc clamp 11 is provided with a fixed rod 14, the fixed rod 14 passes through the arc clamp 11 and stretches out to the outside of the arc clamp 11, and the support plate 5 is provided with a tightening rod near the convex surface of the arc clamp 11. The fastener 15 is connected to the third rotating shaft 12 through a wire rope 16 , and the wire rope 16 is provided with a bent portion 161 . The fasteners 15 in this embodiment can be screws or bolts.

Fig. 4 is a schematic diagram of the front structure of the first curved panel provided by the embodiment of the present invention, and Fig. 5 is a schematic diagram of the side view of the first curved panel provided by the embodiment of the present invention. As shown in Fig. 4 and Fig. 5, the support The plate 5 is provided with a first arc-shaped plate 17 and a second arc-shaped plate 18 matching the first arc-shaped plate 17, the first arc-shaped plate 17 and the second arc-shaped plate 18 can enclose a first closed hole 19 , fix the cross arm of the communication tower in the first closed hole 19, one end of the first arc-shaped plate 17 is rotationally connected with the support plate 5 through the fourth rotating shaft 20, and the other end is provided with two protruding clamping parts 21, two A snap-in rod 22 is fixedly connected between the snap-in portions 21 .

Fig. 6 is a top view structural diagram of the clamping connection of the locking member provided by the embodiment of the present invention, Fig. 7 is a schematic structural diagram of the clamping connection of the locking member provided by the embodiment of the present invention, and Fig. 8 is a schematic diagram of the opening of the locking member provided by the embodiment of the present invention As shown in Figure 6-8, in the actual operation process, when it is necessary to close the first arc-shaped plate 17 and the second arc-shaped plate 18 to close the locking device, it is only necessary to turn the first arc-shaped plate 17 , so that the clamping rod 22 is clamped with the baffle plate 13, and at the same time, the bending part 161 of the steel wire rope 16 is clamped with the fixed rod 14, so as to avoid the rotation of the arc clamping plate 11 and realize the arc clamping plate 11 and the first arc plate 17 Tight connection, so that the locking device is fixedly connected with the cross arm of the communication tower, preventing the height adjustment device from slipping off the cross arm, and improving the safety of high-altitude operations.

The underside of arc clamp 11 on support plate 5 is provided with through hole, is provided with push rod 23 in through hole, and through hole inner wall is provided with spring 24, and one end of spring 24 is fixedly connected with through hole inner wall, and the other end is connected with through hole inner wall. Push rod 23 is connected.

In the actual operation process, when the locking member is in the open state, the fixed rod 14 on the arc clamping plate 11 does not contact the bending portion 161 on the wire rope 16, and the upper part of the push rod 23 abuts against the curved clamping plate 11. In the lower part, the spring 24 is in an unstretched state; when the locking device needs to be closed, only the first arc-shaped plate 17 needs to be rotated, and when the clamping rod 22 is clamped to the upper part of the baffle plate 13 and the arc-shaped clamping plate 11 to form a When it is inside the draw-in slot, the clamping rod 22 exerts a downward force on the baffle 13, the baffle 13 rotates downward, the spring 24 is stretched, and under the force of the rebound force of the spring 24, the upper end of the push rod 23 breaks away from the arc. The bottom of the clamping plate 11 abuts against the baffle 13, which can prevent the clamping rod 22 from being separated from the baffle 13, can increase the locking force of the locking member, and improves the safety of working at heights.

Fig. 9 is a schematic structural view of the insulating flat ladder body provided by the embodiment of the present invention; Fig. 10 is a side view structural schematic diagram of the insulating flat ladder body provided by the embodiment of the present invention; as shown in Fig. 9 and Fig. 10, the insulating flat ladder body 1 It includes two main rods 35, and there are many ladders 36 evenly distributed between the two main rods 35. The main rod 35 includes an outer main rod 351 and an inner main rod 352. The outer main rod 351 is sleeved on the outside of the inner main rod 352, and the outer The upper and lower sides of the main rod 351 and the inner main rod 352 are provided with matching wheel grooves 37, and also include locking bolts 38. The locking bolts 38 pass through the outer main rod 351 and the inner main rod 352, and the outer main rod 351 It is fixed together with the inner main rod 352.

In the actual operation process, the length of the insulating flat ladder can be adjusted arbitrarily according to the actual conditions on site, so that the adaptability of the insulating flat ladder can be greatly improved, and at the same time, it can be convenient for live workers to install the flat ladder on the pole tower.

An insulating seat 30 is provided on the insulating flat ladder body 1, and two sets of insulating pulleys 31 matching the corresponding wheel grooves 37 on the main rod 35 are respectively provided on the upper and lower sides of the bottom of the insulating seat 30, and the insulating pulleys 31 are located above and below the main rod 35. In the wheel grooves 37 on both sides, and slide along the length extension direction of the wheel grooves 37.

By setting the insulating seat 30, the insulating pulley 31 of the insulating seat 30 is located in the wheel groove 37 of the main rod 35, and can be slidably connected with the wheel groove 37, so that the insulating seat 30 can be prevented from falling out of the insulating flat ladder during the sliding process , and at the same time reduce the friction between the live working personnel and the insulating flat ladder when entering and exiting the electric field, which can reduce labor intensity and save personnel's physical strength.

The outside of the insulating seat 30 is provided with a protective cover 32. In this embodiment, the protective cover 32 is a square shell with a side length of 50 cm. The live operator is located in the protective cover 32, and the protective cover 32 slides along the insulating flat ladder body 1 Opposite two sides are provided with operating window, and live operator works through operating window; Protective cover 32 is provided with infrared sensor 33, also includes controller and alarm 34, and alarm 34 and infrared sensor 33 are all electrically connected with controller , in the actual working process, when the limbs of the live operator exceed the protective cover 32, the infrared sensor 33 will send a signal to the controller, and the controller will control the alarm 34 to send an alarm after receiving the signal from the infrared sensor 33.

Due to the live work of the live workers, in order to prevent the workers from getting an electric shock, the electrical safety work regulations require that the range of activities of the workers during the live work should not exceed 50cm. In the prior art, other workers standing on the ground often pass visual inspection To remind live workers not to go beyond the range of activities, due to inaccurate visual inspection, the range of activities of live workers will exceed 50cm, resulting in the danger of short circuit of the power transmission line and electric shock. The present invention sets a protective cover on the outside of the insulating seat 30 32, and an infrared sensor 33 is arranged on the frame of the protective cover 32. When the limbs of the live operator exceed the frame edge of the protective cover 32, the infrared sensor 33 will send a signal, and the controller will control the alarm 34 to send an alarm after receiving the signal. , It can automatically remind live workers to pay attention to the range of activities not to exceed the outside of the protective cover, which can effectively avoid the occurrence of electric shock.

Figure 11 is a schematic structural view of the U-shaped bar provided by the embodiment of the present invention. As shown in Figure 11, a U-shaped bar 27 is provided on the top of the second rotating shaft 9, and a locking screw 28 is provided on the U-shaped bar 27, and the locking screw 28 passes through the U-shaped bar 27, so that the locking screw 28 and the U-shaped groove enclose a second closed hole 29.

During the actual operation, the operator can insert the metal rod into the second closed hole 29 with the help of the metal rod, and only need to use the lever principle to rotate the metal rod to realize the rotation of the second rotating shaft 9, which can save the physical strength of the operator.

The bottom of the push rod 23 is arranged on the pull ring 25 , which is convenient for the operator to hold the pull ring 25 to pull the push rod 23 .

The extending direction of the axis of the first rotating shaft 7 is perpendicular to the extending direction of the axis of the second rotating shaft 9 , which can facilitate the meshing of the first bevel gear 8 and the second bevel gear 10 .

The insulated flat ladder for live work on transmission lines in the embodiment of the present invention has been introduced in detail above. This part uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above examples are only used to help understand the core idea of the present invention. All other embodiments obtained under the premise of creative work belong to the protection scope of the present invention.

Claims (10)

1. a kind of insulating flat ladder for live work on transmission line, comprises insulating flat ladder body (1), and one end of described insulating flat ladder body (1) is provided with the hook (2) that hangs on the power line, it is characterized in that: The other end of the insulating flat ladder body (1) is provided with a height adjustment device; The height adjusting device comprises a cross bar (3), a connecting rod (4) and a support plate (5), the outside of the cross bar (3) is covered with a sleeve (6), and the sleeve (6) and the The horizontal bar (3) is rotationally connected, and the end of the insulating flat ladder body (1) away from the hook (2) is connected to the casing (6); The connecting rod (4) is arranged at both ends of the cross bar (3), one end of the connecting rod (4) is fixedly connected to the cross bar (3), and the other end is connected to the first rotating shaft (7) The support plate (5) is hinged, the first rotating shaft (7) is threadedly connected to the supporting plate (5), and the first rotating shaft (7) is fixedly connected to the connecting rod (4); One end of the first rotating shaft (7) passing through the support plate (5) is provided with a first bevel gear (8), and the first bevel gear (8) is fixedly connected with the first rotating shaft (7), The support plate (5) is provided with a second rotating shaft (9), the second rotating shaft (9) is threadedly connected with the support plate (5), and the second rotating shaft (9) passes through the support plate One end of (5) is provided with the second bevel gear (10) meshed with the first bevel gear (8), and the second bevel gear (10) is fixedly connected with the second rotating shaft (9); Turning the second rotating shaft (9) can drive the insulating flat ladder body (1) to swing up and down through the connecting rod (4). 2. The insulating flat ladder for live work on transmission lines according to claim 1, characterized in that: The support plate (5) is provided with a locking device fixed to the cross arm of the communication tower, and the locking device includes an arc clamp (11) fixed to the cross arm of the communication tower, and the arc clamp (11 ) is rotationally connected with the support plate (5) through a third rotating shaft (12), and a baffle plate (13) is provided in the inner recess of the arc-shaped clamping plate (11); The arc-shaped clamp (11) is provided with a fixed rod (14), and the fixed rod (14) passes through the arc-shaped clamp (11) and stretches out to the outside of the arc-shaped clamp (11), so A fastener (15) is provided on the support plate (5) close to the convex surface of the arc clamp (11), and the fastener (15) and the third rotating shaft (12) pass through a wire rope ( 16) connection, the steel wire rope (16) is provided with a bending part (161); The support plate (5) is provided with a first arc-shaped plate (17) and a second arc-shaped plate (18) matched with the first arc-shaped plate (17), the first arc-shaped plate ( 17) and the second arc-shaped plate (18) can surround a first closed hole (19), and one end of the first arc-shaped plate (17) is connected to the support plate (5) through the fourth rotating shaft (20) ) is rotationally connected, and the other end is provided with two protruding clamping parts (21), and a clamping rod (22) is fixedly connected between the two clamping parts (21); Turn the first arc-shaped plate (17), the clamping rod (22) is clamped with the baffle plate (13), at this time, the bending part (161) of the steel wire rope (16) and the fixed rod (14) card connection. 3. The insulating flat ladder for live work on transmission lines according to claim 2, characterized in that: The underside of the arc-shaped clamping plate (11) on the support plate (5) is provided with a through hole, and a push rod (23) is arranged in the described through hole, and a spring (24) is provided on the inner wall of the through hole, so that One end of the spring (24) is fixedly connected to the inner sidewall of the through hole, and the other end is connected to the push rod (23); Rotate the first arc-shaped plate (17), when the clamping rod (22) is engaged with the baffle (13), the upper end of the push rod (23) abuts against the baffle (13) . 4. The insulating flat ladder for live work on transmission lines according to claim 5, characterized in that: The insulating flat ladder body (1) comprises two main rods (35), and a plurality of ladder rails (36) are evenly distributed between the two main rods (35); The main rod (35) includes an outer main rod (351) and an inner main rod (352), the outer main rod (351) is sleeved on the outside of the inner main rod (352), and the outer main rod ( 351) and the upper and lower sides of the inner main rod (352) are provided with matching wheel grooves (37), and also include locking bolts (38), and the locking bolts (38) pass through the outer main rod ( 351) and the inner main rod (352), the outer main rod (351) and the inner main rod (352) are fixed together. 5. The insulating flat ladder for live work on transmission lines according to claim 4, characterized in that: The insulating flat ladder body (1) is provided with an insulating seat (30), and the upper and lower sides of the bottom of the insulating seat (30) are respectively provided with corresponding wheel grooves (37) on the main rod (35). Matching two sets of insulating pulleys (31), the insulating pulleys (31) are located in the wheel grooves (37) on the upper and lower sides of the main rod. 6. The insulating flat ladder for live work on transmission lines according to claim 5, characterized in that: The outside of the insulating seat (30) is provided with a protective cover (32), the length of the protective cover (32) along the length extension direction of the insulating flat ladder body (1) is 50cm, and the protective cover (32) ) is provided with an infrared sensor (33); It also includes a controller and an alarm (34), the alarm (34) and the infrared sensor (33) are electrically connected to the controller, and the controller receives the signal sent by the infrared sensor (33). After the signal, control the alarm (34) to report to the police. 7. The insulating flat ladder for live work on transmission lines according to claim, characterized in that: The top of the second rotating shaft (9) is provided with a U-shaped bar (27), and the U-shaped bar (27) is provided with a locking screw (28), and the locking screw (28) passes through the U The shape bar (27) makes the locking screw (28) and the U-shaped groove enclose a second closed hole (29). 8. The insulating flat ladder for live work on transmission lines according to claim 7, characterized in that: The bottom of the push rod (23) is arranged on the pull ring (25). 9. The insulating flat ladder for live work on transmission lines according to claim 8, characterized in that: The extending direction of the axis of the first rotating shaft (7) is perpendicular to the extending direction of the axis of the second rotating shaft (9). 10. The insulating flat ladder for live work on transmission lines according to claim 9, characterized in that: The hook (2) is an arc-shaped hook, and the inner concave part of the hook (2) is provided with a groove (26) matching the power line.