A Movable Crossarm for Preventing Low-Voltage Conductor Dancing during 0.4kV Live Poling Operation and Its Usage Method

Abstract

The present invention relates to a 0.4kV live pole erection wire isolation device, belonging to the technical field of isolating 0.4kV live lines. It includes: an insulating cross-arm isolation device body and an accessory locking strip that can be inserted therein. Among them, the insulating cross-arm isolation device body is a long strip-shaped hollow structure. A plurality of holes for inserting wires are provided on one side in the length direction of the insulating cross-arm isolation device body. After the accessory locking strip is inserted along one end of the insulating cross-arm isolation device body, the bottom of the hole is blocked. The accessory locking strip and the insulating cross-arm isolation device body are fixed into one body through a locking mechanism. The present invention is used to solve the problems in the existing traditional 0.4kV live pole erection, such as phase-by-phase sleeving of protective sleeves, which requires a live working vehicle, is limited by the site, has a small protection range, is relatively cumbersome and the adjustment process is slow, and unforeseen situations such as sudden strong winds and the slipping of the protective sleeve may cause phase-to-phase short circuits and trip accidents, resulting in unnecessary losses and certain safety risks at the same time.

Description

Technical Field

[0001] The present invention relates to a 0.4 kV live pole erection wire isolation device, belonging to the technical field of isolating 0.4 kV live lines. Background Art

[0002] The traditional method for isolating 0.4 kV live lines is generally to put on protective sleeves for each phase during live pole erection operations, which requires the assistance of a live working vehicle. The site is restricted, the protection range is small, the process is relatively cumbersome and the adjustment process is slow. Unforeseen situations such as sudden strong winds and the slipping of the protective sleeve may cause phase-to-phase short circuits and result in tripping accidents, causing unnecessary losses and certain safety risks at the same time.

[0003] With the continuous development of society, the majority of power users have higher and higher requirements for power supply reliability. Live working, as a means of power maintenance without power interruption, has been widely used. With the continuous development of live working, live working technology has also achieved great development, and new tools and new methods emerge in an endless stream. Facing the new situation of the booming development of live working, there is an urgent need for more convenient and efficient working tools that can simplify the construction difficulty on the premise of ensuring safety. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems by providing a 0.4 kV live pole erection operation line isolation device to solve the problems in the existing traditional 0.4 kV live pole erection, such as putting on protective sleeves for each phase, requiring a live working vehicle, restricted site, small protection range, relatively cumbersome and slow adjustment process, and unforeseen situations such as sudden strong winds and the slipping of the protective sleeve resulting in phase-to-phase short circuits and tripping accidents, causing unnecessary losses and certain safety risks at the same time.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A movable cross arm for preventing the dancing of low-voltage wires during 0.4 kV live pole erection operations, which is characterized in that it includes: an insulating cross arm isolation device body 1 and an accessory locking bar 2 that can be inserted therein. Among them, the insulating cross arm isolation device body 1 is a long strip-shaped hollow structure. One side in the length direction of the insulating cross arm isolation device body 1 is provided with a plurality of hole grooves 3 for inserting wires. After the accessory locking bar 2 is inserted along one end of the insulating cross arm isolation device body 1, the bottom of the hole groove 3 is blocked. The accessory locking bar 2 and the insulating cross arm isolation device body 1 are fixed into one body through a locking mechanism;

[0007] The number of the hole grooves 3 matches the number of wires, and they are arranged at intervals along the length direction of the insulating cross arm isolation device body 1. The shape of the hole groove 3 is in the shape of a door;

[0008] In order to enable the accessory lock bar 2 to be smoothly inserted into the insulating cross-arm isolation device body 1, the outer width of the accessory lock bar 2 is smaller than the inner width of the insulating cross-arm isolation device body 1;

[0009] The accessory lock bar 2 includes a lock bar body 4 for sealing the bottom of the hole groove 3. One end of the lock bar body 4 is provided with a limit plate 5, and one end of the limit plate 5 is provided with a lock bar handle 6;

[0010] The locking mechanism includes a lock catch 9, a limit jack 7 opened at one end of the insulating cross-arm isolation device body 1, a socket 8 opened along the length direction of the limit plate 5 for passing through the lock catch 9, and a jack 10 opened on the insulating cross-arm isolation device body 1 for passing through the lock catch 9;

[0011] The lock catch 9 is connected to the insulating cross-arm isolation device body 1 through a connecting rope 11, and a plurality of insulating rope mounting holes 12 are also opened on the insulating cross-arm isolation device body 1;

[0012] The insulating cross-arm isolation device body 1 is made of an insulating material with a length of 1.7 m, a thickness of 35 mm, and a height of 60 mm;

[0013] The accessory lock bar 2 is made of an insulating material with a length of 1.8 m.

[0014] A usage method of a movable cross-arm for preventing the dancing of low-voltage conductors during live pole erection operation of 0.4 kV of the present invention is characterized by including the following steps:

[0015] 1. Construction workers wear protective equipment and select a movable cross-arm suitable for the conductor type;

[0016] 2. If the site is not restricted, the operator stands on the insulating boom truck for operation. Under the condition of ensuring a safe distance, the insulating cross-arm isolation device body 1 is buckled above the conductor, so that each phase of the conductor is smoothly and properly clamped into the hole groove 3. Then, the accessory lock bar 2 is inserted into the insulating cross-arm isolation device body 1 along the lower side of the conductor, and the conductor is firmly fixed above and below the insulating cross-arm isolation device body 1. Finally, the lock catch 9 is inserted into the jack 10 and the socket 8 to tightly connect the insulating cross-arm isolation device body 1 and the accessory lock bar 2 together, and then the live pole erection operation can be carried out.

[0017] 3) If the site is restricted, the operator climbs the old pole. After reaching the operation position, after installing the insulating cross-arm isolation device body 1 and the accessory lock bar 2 according to the above step 2) at the old pole, the lower operator pulls the movable cross-arm to the place where live pole erection is required through the insulating rope, and then the live pole erection operation is carried out.

[0018] The beneficial effects of the present invention are:

[0019] The present invention relates to a 0.4kV live pole erection wire isolation device, which has the characteristics of rapid adjustment, firm fixation, unrestricted site by the live working vehicle, large protection range, etc. In specific use, compared with the traditional method of sleeving protective covers on each phase in live pole erection, the present invention adopts a device that quickly and easily fixes the wire and a locking safety device to achieve rapid and effective isolation of the wire, thereby reducing the live working time and improving the work safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of the insulating cross-arm isolation device body of a movable cross-arm for preventing low-voltage wire dancing during 0.4kV live pole erection operation of the present invention;

[0021] Figure 2 FIG. is a schematic structural diagram of the accessory locking bar of a movable cross-arm for preventing low-voltage wire dancing during 0.4kV live pole erection operation of the present invention;

[0022] Figure 3 FIG. is a usage state diagram of a movable cross-arm for preventing low-voltage wire dancing during 0.4kV live pole erection operation of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1

[0025] A movable cross-arm for preventing low-voltage wire dancing during 0.4kV live pole erection operation in this embodiment, please refer to Figures 1 - 3 .

[0026] A movable cross-arm for preventing low-voltage wire dancing during 0.4kV live pole erection operation in this embodiment includes an insulating cross-arm isolation device body 1 and an accessory locking bar 2 that can be inserted therein. Among them, the insulating cross-arm isolation device body 1 is a long strip-shaped hollow structure. A plurality of hole grooves 3 for inserting the wire 7 are provided on one side in the length direction of the insulating cross-arm isolation device body 1. After the accessory locking bar 2 is inserted along one end of the insulating cross-arm isolation device body 1, the bottom of the hole groove 3 is blocked, thereby fixing the wire 10. The accessory locking bar 2 and the insulating cross-arm isolation device body 1 are fixed into one body through a locking mechanism.

[0027] In this embodiment, the number of conductors 7 is four, and the number of hole grooves 3 is four. They are arranged at intervals along the length direction of the insulating cross-arm isolation device body 1. The hole groove 3 is in a U-shaped form, and the size of the hole groove 3 is such that each phase conductor can be smoothly and properly clamped in. The hole groove 3 is accurately drilled according to the models such as the outer diameter cross-section of various conductors, and accurately positioned, so that the function of preventing conductor galloping of the device is more firm and reliable, and risks such as phase-to-phase short circuit and detachment will never occur.

[0028] In order to enable the accessory lock bar 2 to be smoothly inserted into the insulating cross-arm isolation device body 1, the outer width of the accessory lock bar 2 is smaller than the inner width of the insulating cross-arm isolation device body 1. The accessory lock bar 2 includes a lock bar body 4 for sealing the bottom of the hole groove 3. One end of the lock bar body 4 is installed with a limit plate 5, and one end of the limit plate 5 is installed with a lock bar handle 6.

[0029] The locking mechanism of this embodiment includes a lock catch 9. A socket 8 for passing through the lock catch 9 is opened along the length direction of the limit plate 5, and a jack 10 for passing through the lock catch 9 is opened on the insulating cross-arm isolation device body 1.

[0030] In order to prevent the loss of the lock catch 9, the lock catch 9 is connected to the insulating cross-arm isolation device body 1 through a connecting rope 11. A plurality of insulating rope installation holes 12 are also opened on the insulating cross-arm isolation device body 1, which is suitable for the situation where the working site is limited. The operating personnel below can manually drag the movable cross-arm.

[0031] The insulating cross-arm isolation device body 1 of this embodiment is made of an insulating material with a length of 1.7 m, a thickness of 35 mm, and a height of 60 mm. The accessory lock bar 2 is made of an insulating material with a length of 1.8 m. The insulating material of this embodiment selects a material with a heat resistance level of Class A or above on the premise of meeting the withstand voltage level, so as to ensure that in the extreme case where the conductor temperature is too high, the situation of exceeding its own insulation heat resistance temperature and resulting in rapid aging and inability to use will not occur.

[0032] During use, the construction personnel wear protective equipment, select a movable cross-arm suitable for the conductor model. When the site is not restricted, through the insulating boom truck, the insulating cross-arm isolation device body 1 is buckled above the conductor 7 while ensuring a safe distance, so that each phase conductor 7 is smoothly and properly clamped into the hole groove 3. Then, the accessory lock bar 2 is inserted into the insulating cross-arm isolation device body 1 along the lower side of the conductor 7. The insulating cross-arm isolation device body 1 and the accessory lock bar 2 fix the conductor 7 firmly from above and below respectively. Finally, the lock catch 9 is inserted into the jack 10 and the socket 8 to tightly connect the insulating cross-arm isolation device body 1 and the accessory lock bar 2 together, and then the live pole erection operation can be carried out; when the site is restricted, climb the old pole, install the body and the lock bar at the old pole, and then manually pull it to the place where the live pole erection is required through the insulating rope below, and then carry out the live pole erection operation.

[0033] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable cross arm for preventing low-voltage conductor dancing during 0.4 kV live pole erection operation, characterized in that it includes: An insulating cross arm isolation device body and an accessory locking bar that can be inserted into it. Among them, the insulating cross arm isolation device body is a long strip-shaped hollow structure. One side in the length direction of the insulating cross arm isolation device body is provided with a plurality of hole grooves for inserting conductors. After the accessory locking bar is inserted along one end of the insulating cross arm isolation device body, the bottom of the hole groove is blocked. The accessory locking bar and the insulating cross arm isolation device body are fixed into one body through a locking mechanism; The number of the hole grooves matches the number of conductors, and they are arranged at intervals along the length direction of the insulating cross arm isolation device body. The shape of the hole groove is in the shape of a door; The outer width of the accessory locking bar is smaller than the inner width of the insulating cross arm isolation device body; The accessory locking bar includes a locking bar body for sealing the bottom of the hole groove. One end of the locking bar body is installed with a limiting plate, and one end of the limiting plate is installed with a locking bar handle; The locking mechanism includes a lock catch. An insertion opening for passing through the lock catch is opened along the length direction of the limiting plate, and an insertion hole for passing through the lock catch is opened on the insulating cross arm isolation device body; The lock catch is connected to the insulating cross arm isolation device body through a connecting rope, and a plurality of insulating rope installation holes are also opened on the insulating cross arm isolation device body.

2. A movable cross arm for preventing low-voltage conductor dancing during 0.4 kV live pole erection operation according to claim 1, characterized in that The insulating cross arm isolation device body is made of an insulating material with a length of 1.7 m, a thickness of 35 mm, and a height of 60 mm.

3. A movable cross arm for preventing low-voltage conductor dancing during 0.4 kV live pole erection operation according to claim 1, characterized in that The accessory locking bar is made of an insulating material with a length of 1.8 m.

4. A method for using a movable cross arm for preventing low-voltage conductor dancing during 0.4 kV live pole erection operation according to any one of claims 1-3, characterized in that it includes the following steps: 1) The construction personnel wear protective equipment and select a movable cross arm suitable for the conductor model; 2) If the site is not restricted, the operator stands on the insulating boom truck for operation. Under the condition of ensuring a safe distance, the insulating cross arm isolation device body is buckled above the conductor, so that each phase of the conductor is smoothly and properly clamped into the hole groove. Then the accessory locking bar is inserted into the insulating cross arm isolation device body along the lower part of the conductor, and the conductor is firmly fixed above and below the insulating cross arm isolation device body respectively. Finally, the lock catch is inserted into the insertion hole and the insertion opening to tightly connect the insulating cross arm isolation device body and the accessory locking bar together, and then the live pole erection operation can be carried out; 3) If the site is restricted, the operator climbs the old pole. After reaching the operation position, after installing the insulating cross arm isolation device body and the accessory locking bar according to step 2) above at the old pole, the operator below pulls the movable cross arm to the place where the live pole needs to be erected through the insulating rope, and then carries out the live pole erection operation.

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