A live-line work lifting device for straight pole reconstruction

Abstract

The application discloses a live-line work lifting device for linear pole reconstruction, which comprises a lifting device, a lifting device and a cross arm fixer, the lifting device is provided with a first through hole for passing through the lifting device, the lifting device can be up and down and is arranged in the first through hole of the lifting device, the cross arm fixer is connected to one side of the lifting device, the cross arm fixer is detachably connected with the lifting device, the cross arm fixer is provided with an installation groove with an opening upward, the lifting device comprises a fixed frame, the fixed frame is provided with an installation plate matched with the installation groove, and the lower end of the installation plate extends into the installation groove and is in contact with the bottom surface of the installation groove. The lifting device can reduce the weight of the component that needs to be held when a single component is installed, reduce the installation difficulty of a single person, realize the disassembly and assembly of the lifting device by a single person, and reduce the number of workers who need to work in high places.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment modification tools, in particular to a live working lifting device for straight pole modification. BACKGROUND

[0002] At present, most of the distribution network lines are double-circuit lines, which usually have the following defects: there are fewer disconnecting switches for double-circuit triangular arrangement lines, and the line crossing span phenomenon is prominent. Once the line needs to be overhauled, it must be mutually coordinated to stop power supply on the whole line, which has a large influence range. In order to reduce the large-scale power failure caused by the above reasons, improve the power supply reliability, reduce unnecessary power failure loss and the influence of power failure on customers, bypass live working needs to be carried out, and the bypass cable must be a strain pole. In actual work, straight poles are often encountered, so in order to solve this problem, the method of modifying a straight pole into a strain pole through live working can be used. The patent application file with the application number CN202210373758.4 discloses a double-circuit line triangular arrangement straight pole modification strain pole live working tool. The lifting device is fixed on the cross arm through the cross arm fixer, and then the lifting device with the conductor is arranged on the lifting device. Since the lifting device is in an up-down lifting structure on the lifting device, the conductor can be lifted synchronously with the lifting device, and the lifting device can ensure the stability of the lifting device when it is lifted up and down. In addition, since the cross arm fixer is fixed on one side of the lifting device, the entire lifting device can be away from the cross arm after installation, which can effectively avoid the interference of the cross arm on the space formed during the lifting process, and greatly improve the quality and efficiency of the lifting. However, the overall weight of the working tool is large, and two people are needed to install it on the cross arm, which has a high labor cost. In addition, two people need to be sent to the cross arm accessory through the elevator at the same time, and the relative crowded space of the two people is small, which is not convenient to install. SUMMARY

[0003] In order to overcome the problem of inconvenient single-person installation of the lifting device in the prior art, the present application provides a live working lifting device for straight pole modification, which can reduce the weight of the component that needs to be held when installing a single component, reduce the difficulty of single-person installation, realize single-person disassembly and assembly of the lifting device, and reduce the number of workers who need to work at high altitudes.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] The utility model provides an electric work lifting device for straight pole transformation, which comprises a lifting device, a lifting device and a cross arm fixer, the lifting device is provided with a first through hole for passing through the lifting device, the lifting device can be up and down and is arranged in the first through hole of the lifting device, the cross arm fixer is connected to one side of the lifting device, the cross arm fixer is detachably connected with the lifting device, the cross arm fixer is provided with an upward opening mounting groove, the lifting device comprises a fixed frame, the fixed frame is provided with a mounting plate matched with the mounting groove, and the lower end of the mounting plate extends into the mounting groove and is in contact with the bottom surface of the mounting groove.

[0006] In the above technical solution, the cross arm fixer and the lifting device are detachably connected, before the lifting device is installed on the electric pole, the two can be separated, the cross arm fixer is installed on the cross arm of the electric pole, and then the lifting device is connected with the cross arm fixer. The lifting device and the cross arm fixer are installed separately, which can reduce the weight of the component that needs to be held during the installation of a single component, reduce the difficulty of single installation, realize the disassembly and assembly of the lifting device by a single person, and reduce the number of workers who need to work at high altitude.

[0007] Preferably, the cross arm fixer is provided with an upward opening mounting groove, the lifting device comprises a fixed frame, the fixed frame is provided with a mounting plate matched with the mounting groove, and the lower end of the mounting plate extends into the mounting groove and is in contact with the bottom surface of the mounting groove. Since the lifting device is mainly subjected to the vertical downward force during the working process, the lower end of the mounting plate extends into the mounting groove, the cross arm fixer and the lifting device are quickly installed, and the bottom surface of the mounting groove is in contact with the lower end of the mounting plate, so that the lifting device can be supported.

[0008] Preferably, the cross arm fixer is provided with an anti-falling piece, one end of the anti-falling piece passes through the cross arm fixer and is clamped with the mounting plate. The anti-falling piece can prevent the lifting device from falling off the cross arm fixer after installation.

[0009] Preferably, the cross arm fixer is provided with an anti-falling piece, the anti-falling piece is a fixed bolt, one end of the fixed bolt passes through a third through hole in the cross arm fixer and is threadedly connected with the mounting plate.

[0010] As preferred, the cross arm fixer is provided with a anti-falling piece and an anti-falling spring, the anti-falling piece is in sliding connection with the cross arm fixer in the transverse direction, and the two ends of the anti-falling spring are connected with the anti-falling piece and the cross arm fixer respectively, so that one end of the anti-falling piece extends into the positioning hole in the mounting plate to limit the mounting plate, and the upper side of the one end of the anti-falling piece extending out of the mounting plate is provided with a second guide slope. The anti-falling piece can limit the lifting device to avoid falling off the cross arm fixer. When the lifting device is installed, the mounting plate contacts the second guide slope to make the anti-falling piece retract, thereby facilitating the installation of the lifting device. When disassembly is needed, the other end of the anti-falling piece is pulled to pull the anti-falling piece out of the mounting plate, thereby releasing the limitation of the anti-falling piece on the mounting plate. The anti-falling piece only plays a limiting role and is hardly subjected to force during the operation of the lifting device.

[0011] As preferred, the mounting groove is provided with an upwardly-opening avoiding groove at the middle position of the side close to the lifting device, and a reinforcing rib is arranged between the mounting plate and the fixed frame and passes through the avoiding groove. The structure can increase the connection strength between the mounting plate and the fixed frame.

[0012] As preferred, the lifting device is detachably connected with the lifting device, and the lower end of the lifting device is smaller than the size of the first through hole, so that the lower end of the lifting device can pass into the first through hole.

[0013] In the above technical solution, the lifting device is detachably connected with the lifting device, and before the lifting device is installed on the electric pole, the two can be separated, and after the lifting device and the cross arm fixer are installed on the cross arm of the electric pole, the lower end of the lifting device is inserted into the first through hole to realize the connection of the lifting device and the lifting device. The lifting device and the lifting device are installed separately, which can reduce the weight of the component that needs to be held during the installation of a single component, reduce the difficulty of single-person installation, realize the disassembly of the lifting device by a single person, and reduce the number of workers who need to work at high altitude.

[0014] As preferred, the lifting device is provided with a limiting piece detachably connected with the lifting device at a position close to the lower end. The limiting piece can avoid the lifting device from falling off the lifting device during lifting. When the lifting device is installed, the limiting piece is first disassembled, and then the lifting device is installed on the lifting device, and then the limiting piece is installed on the lifting device to limit the lifting device.

[0015] As preferred, the lifting device includes a fixed plate, the limiting piece includes a sliding block and a telescopic spring, the sliding block is in sliding connection with the fixed plate in the transverse direction, and the telescopic spring is connected with the sliding block and the fixed plate respectively, so that one end of the sliding block extends out of the fixed plate, the horizontal projection of the sliding block exceeds the contour line of the horizontal projection of the first through hole, and the lower side of the one end of the sliding block extending out of the fixed plate is provided with a first guide slope.

[0016] The structure can directly insert the lower end of the lifting device into the first through hole when the lifting device is installed on the lifting device, the first guide slope will retract the fixed plate when the slider encounters an obstruction, so that the lower end of the lifting device can smoothly pass through the first through hole, and the installation of the lifting device is completed. After the installation is completed, the telescopic spring will make one end of the slider protrude out of the fixed plate, and the limiting action on the lifting device is achieved. When the lifting device needs to be disassembled, the slider can be manually pressed back into the fixed plate to release the limiting action on the lifting device, and then the lifting device can be pulled out of the first through hole.

[0017] As preferred, a retraction locking block is arranged below the slider and is in sliding connection with the fixed plate in the vertical direction, a clamping groove is arranged on the slider and is matched with the retraction locking block, and when the slider is retracted, the retraction locking block is clamped into the clamping groove to keep the slider in the retracted state. When the lifting device needs to be disassembled, the slider can be manually pressed back into the fixed plate to release the limiting action on the lifting device, and then the retraction locking block is clamped into the clamping groove, and the lifting device can be pulled out of the first through hole, so that the slider does not need to be pressed all the time during disassembly, and the disassembly process is more convenient.

[0018] As preferred, an unlocking block is arranged above the slider and is in sliding connection with the fixed plate in the horizontal direction, a contact block is arranged on the inner side wall of the first through hole near the lower end, the end surface of the unlocking block protruding out of the fixed plate is provided with guide surfaces on the upper side and the lower side, so that when the unlocking block contacts the contact block, the unlocking block can retract into the fixed plate, and one end of the retraction locking block is in contact with the unlocking block through a slope, so that when the unlocking block retracts into the fixed plate, the unlocking block moves downward with the retraction locking block, and the retraction locking block is disengaged from the clamping groove. When the lifting device needs to be disassembled, the lifting device can be moved first, so that the unlocking block moves above the contact block, then the slider is manually pressed back into the fixed plate to release the limiting action of the slider on the lifting device, and then the retraction locking block is clamped into the clamping groove, and the lifting device can be pulled out of the first through hole, so that the slider does not need to be pressed all the time during disassembly, and the disassembly process is more convenient. During the installation process, the unlocking block will contact the contact block, so that the unlocking block retracts into the fixed plate and moves downward with the retraction locking block, so that the retraction locking block is disengaged from the clamping groove, the automatic resetting of the retraction locking block during the installation process is realized, and the situation that the slider cannot normally limit due to the worker forgetting to reset the retraction locking block is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a sectional view of the present application;

[0020] Figure 2 is Figure 2 is a partial enlarged view of B in

[0021] Figure 3 is a structural schematic view of the present application;

[0022] Figure 4This is a partial structural diagram of Example 2. Figure 1 ;

[0023] Figure 5 This is a partial structural diagram of Example 2. Figure 2 ;

[0024] Figure 6 yes Figure 2 A magnified view of a portion of point A in the middle.

[0025] In the diagram: Lifting device 1, First through hole 1.1, Fixed frame 1.2, Mounting plate 1.3, Positioning hole 1.4, Reinforcing rib 1.5, Transmission gear set 1.6, Drive assembly 1.7, Lifting device 2, Second through hole 2.1, Fixed plate 2.2, Lifting rack 2.3, Wire fixing block 2.4, Opening slot 2.5, Limiting pin 2.6, Crossarm fixing device 3, Mounting slot 3.1, Clearance slot 3.3, Crossarm fixing frame 3.4, Sliding limit block 3.5, Fixed limit block 3.6, First sliding limiter 3.7, Second sliding limiter 3.8, Limiting component 4, Slider 4.1, Slot 4.1.1, Telescopic spring 4.2, First guide slope 4.3, Limiting part 4.4, Magnet 5, Elastic pin 6, Retracting locking block 7, Unlocking block 8, Guide surface 8.1, Anti-detachment component 9, Second guide slope 9.1, Anti-detachment spring 10, Contact block 11. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0027] Example 1:

[0028] like Figure 1 and Figure 2 As shown, a live-line working lifting device for straight pole modification includes a lifting device 1, a hoisting device 2, and a crossarm fixing device 3. The lifting device 1 has a first through hole 1.1 for the hoisting device 2 to pass through, and the hoisting device 2 can be vertically inserted into the first through hole 1.1 of the lifting device 1. The crossarm fixing device 3 is connected to one side of the lifting device 1 and is detachably connected to the lifting device 1. This structure, through the detachable connection between the crossarm fixing device 3 and the lifting device 1, allows for easier installation of the lifting device. First, the crossarm fixing device 3 is fixed to the crossarm, and then the lifting device 1 is fixed to the crossarm fixing device 3. This further reduces the weight of components that need to be held when installing individual parts, thus reducing the difficulty of installation by a single person.

[0029] like Figure 1 and Figure 2As shown in the drawings, the cross arm fixer 3 is provided with an installation slot 3.1 opening upward, the lifting device 1 comprises a fixed frame 1.2, the fixed frame 1.2 is provided with an installation plate 1.3 matched with the installation slot 3.1, and the lower end of the installation plate 1.3 extends into the installation slot 3.1 and is in contact with the bottom surface of the installation slot 3.1. Since the lifting device 1 is mainly subjected to vertical downward force during work, the lower end of the installation plate 1.3 extends into the installation slot 3.1, thereby realizing quick installation of the cross arm fixer 3 and the lifting device 1, and the bottom surface of the installation slot 3.1 is in contact with the lower end of the installation plate 1.3, thereby supporting the lifting device 2.

[0030] As shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, the installation slot 3.1 is provided with an avoiding slot 3.3 opening upward at the middle position of the side close to the lifting device 1, and the installation plate 1.3 and the fixed frame 1.2 are provided with a reinforcing rib 1.5 penetrating through the avoiding slot 3.3. The structure can increase the connecting strength between the installation plate 1.3 and the fixed frame 1.2.

[0031] In one embodiment, the cross arm fixer 3 is provided with an anti-falling piece 9, one end of the anti-falling piece 9 penetrating through the cross arm fixer 3 and being clamped with the installation plate 1.3. The anti-falling piece 9 can prevent the installed lifting device 1 from falling off the cross arm fixer 3.

[0032] In another embodiment, the cross arm fixer 3 is provided with an anti-falling piece 9, the anti-falling piece 9 being a fixed bolt, one end of the fixed bolt penetrating through a third through hole on the cross arm fixer 3 and being threadedly connected with the installation plate 1.3.

[0033] In another embodiment, as shown in the drawings, Figure 2 the cross arm fixer 3 is provided with an anti-falling piece 9 and an anti-falling spring 10, the anti-falling piece 9 being slidably connected with the cross arm fixer 3 in the transverse direction, the two ends of the anti-falling spring 10 being respectively connected with the anti-falling piece 9 and the cross arm fixer 3, so that one end of the anti-falling piece 9 extends into a positioning hole 1.4 on the installation plate 1.3 to limit the installation plate 1.3, and the upper side of the one end of the anti-falling piece 9 extending out of the installation plate 1.3 is provided with a second guide inclined surface 9.1. The anti-falling piece 9 can limit the lifting device 1 to prevent the lifting device 1 from falling off the cross arm fixer 3. When the lifting device 1 is installed, the installation plate 1.3 contacts the second guide inclined surface 9.1 to make the anti-falling piece 9 retract, thereby facilitating the installation of the lifting device 1. When disassembly is needed, the other end of the anti-falling piece 9 is pulled to pull the anti-falling piece 9 out of the installation plate 1.3, thereby releasing the limitation of the anti-falling piece 9 on the installation plate 1.3. The anti-falling piece 9 only plays a limiting role and is hardly subjected to force during work of the lifting device.

[0034] As shown in the drawings, Figure 1 and Figure 3As shown, the lifting device 1 comprises a fixed frame 1.2, a transmission gear set 1.6 penetrating through the fixed frame 1.2 and used for engaging connection with the lifting device 2, a driving assembly 1.7 arranged on the front side of the fixed frame 1.2 and used for driving the transmission gear set 1.6 to work, and a control assembly used for controlling the transmission gear set 1.6 to start or stop working, which can realize the stability of the lifting device, ensure the control of the lifting device in a small space, facilitate the installation of the entire lifting device, realize remote control, and realize the start or stop of the first gear driving assembly.

[0035] The lifting device 2 comprises two parallel and opposite fixed plates 2.2 and two lifting racks 2.3 fixed back-to-back between the two parallel and opposite fixed plates 2.2, and a wire fixing block 2.4 is further arranged between the two parallel and opposite fixed plates 2.2 and located at the top of the two lifting racks 2.3. An open slot 2.5 for placing a wire is formed at the end of the wire fixing block 2.4 away from the two parallel and opposite fixed plates 2.2, and a limiting catch 2.6 is arranged at the opening end of the open slot 2.5.

[0036] The cross arm fixer 3 comprises a cross arm fixing frame 3.4, a sliding limiting block 3.5, a fixed limiting block 3.6, a first sliding limiter 3.7, and a plurality of second sliding limiters 3.8. One end of the sliding limiting block 3.5 is slidingly penetrated through the cross arm fixing frame 3.4, the other end of the sliding limiting block 3.5 is slidingly connected with the first sliding limiter 3.7, the fixed limiting block 3.6 is fixed at the end of the cross arm fixing frame 3.4 away from the fixed frame 1.2, and the second sliding limiter 3.8 is slidingly arranged in parallel at the lower part of the cross arm fixing frame 3.4. The cross arm fixer 3 can adapt to various cross arms and can be adjusted according to the size of the cross arm and the position, thereby ensuring the fixing quality of the entire wire lifting device. The other parts of the lifting device not described in detail in the application can refer to the patent application files: CN202210362178.5 and CN202210373758.4.

[0037] Embodiment 2:

[0038] On the basis of Embodiment 1, as shown in Figure 1 and Figure 3 The lifting device 2 is detachably connected with the lifting device 1, and the size of the lower end of the lifting device 2 is smaller than the size of the first through hole 1.1, so that the lower end of the lifting device 2 can penetrate into the first through hole 1.1.

[0039] In the above technical solution, the lifting device 2 and the lifting device 1 are detachably connected. Before installing the lifting device onto the pole, the two can be separated. After installing the lifting device 1 and the crossarm fixing device 3 onto the crossarm of the pole, the lower end of the lifting device 2 is inserted into the first through hole 1.1 to connect the lifting device 2 and the lifting device 1. Installing the lifting device 2 and the lifting device 1 separately can reduce the weight of the component that needs to be held when installing a single part, reduce the difficulty of installation by a single person, enable a single person to assemble and disassemble the lifting device, and reduce the number of workers required for high-altitude operations.

[0040] Example 3:

[0041] like Figure 1 As shown, based on Embodiment 1, the lifting device 2 is provided with a limiting member 4 detachably connected to the lifting device 2 near its lower end. The limiting member 4 can prevent the lifting device 2 from falling off the lifting device 1 during lifting. When installing the lifting device 2, the limiting member 4 is first removed, and after the lifting device 2 is installed on the lifting device 1, the limiting member 4 is then installed back on the lifting device 2 to limit the lifting device 2.

[0042] In one embodiment, such as Figure 4 As shown, the lifting device 2 has a horizontally arranged second through hole 2.1 near its lower end. The limiting member 4 is equipped with a magnet 5. One end of the limiting member 4 is located outside the second through hole 2.1 and is attracted to the lifting device 2 by the magnet 5. The other end of the limiting member 4 passes through the second through hole 2.1. This structure facilitates the installation and removal of the limiting member 4 from the lifting device 2. During installation, one end of the limiting member 4 is inserted into the second through hole 2.1, and the magnet 5 attracts the limiting member 4 to the lifting device 2, thus limiting the lifting device 2. In this application, the lifting direction of the lifting device 2 is vertical, and the axis of the second through hole 2.1 is horizontal.

[0043] In another embodiment, such as Figure 5 As shown, the lifting device 2 has a second through hole 2.1 horizontally positioned near its lower end. One end of the limiting member 4 has a limiting part 4.4 larger than the second through hole 2.1, and the other end of the limiting member 4 passes through the second through hole 2.1 and has an elastic pin 6 to prevent the limiting member 4 from disengaging from the second through hole 2.1. This structure facilitates the installation and removal of the limiting member 4 from the lifting device 2. During installation, one end of the limiting member 4 is inserted into the second through hole 2.1, and the elastic pin 6 is inserted into the pin hole on that end of the limiting member 4, thus limiting the lifting device 2. During removal, the elastic pin 6 is pulled out from the limiting member 4, and the limiting member 4 is pulled out from the second through hole 2.1 to release the limiting effect on the lifting device 2.

[0044] In another embodiment, the lifting device 2 is provided with a horizontally arranged threaded hole near its lower end, and one end of the limiting member 4 is disposed in the threaded hole and threadedly connected thereto.

[0045] Example 4:

[0046] like Figure 6 As shown, based on Embodiment 1, the lifting device 2 includes a fixed plate 2.2, and the limiting member 4 includes a slider 4.1 and a telescopic spring 4.2. The slider 4.1 is slidably connected to the fixed plate 2.2 in the lateral direction. The telescopic spring 4.2 connects the slider 4.1 and the fixed plate 2.2 respectively, so that one end of the slider 4.1 extends out of the fixed plate 2.2. The horizontal projection of the slider 4.1 exceeds the outline of the horizontal projection of the first through hole 1.1. A first guide slope 4.3 is provided on the lower side of the end of the slider 4.1 that extends out of the fixed plate 2.2.

[0047] When the lifting device 2 is installed onto the lifting device 1, the lower end of the lifting device 2 can be directly inserted into the first through hole 1.1. The first guide slope 4.3 will retract the fixing plate 2.2 when the slider 4.1 encounters an obstruction, allowing the lower end of the lifting device 2 to pass smoothly through the first through hole 1.1, thus completing the installation of the lifting device 2. After installation, the telescopic spring 4.2 will cause one end of the slider 4.1 to extend out of the fixing plate 2.2, limiting the lifting device 2. When it is necessary to disassemble the lifting device 2, the slider 4.1 can be manually pressed back into the fixing plate 2.2 to release the limiting effect on the lifting device 2, and then the lifting device 2 can be pulled out from the first through hole 1.1.

[0048] A retraction locking block 7 is provided below the slider 4.1. The retraction locking block 7 is slidably connected to the fixing plate 2.2 in the vertical direction. The slider 4.1 is provided with a slot 4.1.1 that matches the retraction locking block 7. When the slider 4.1 retracts, the retraction locking block 7 engages with the slot 4.1.1 to keep the slider 4.1 in the retracted state. When it is necessary to disassemble the lifting device 2, the slider 4.1 can be manually pressed back into the fixing plate 2.2 to release the limiting effect on the lifting device 2. Then, the retraction locking block 7 can be engaged with the slot 4.1.1, and the lifting device 2 can be pulled out from the first through hole 1.1. It is not necessary to keep the slider 4.1 installed during the disassembly process, making the disassembly process more convenient.

[0049] The unlocking block 8 is arranged above the sliding block 4.1 and is in transverse sliding connection with the fixed plate 2.2. The first through hole 1.1 is provided with a contact block 11 on the inner side wall near the lower end. The unlocking block 8 extends out of the fixed plate 2.2. The upper and lower sides of the end surface of the unlocking block 8 extending out of the fixed plate 2.2 are provided with guide surfaces 8.1. When the unlocking block 8 is in contact with the unlocking block 8, the unlocking block 8 can retract into the fixed plate 2.2. One end of the retraction locking block 7 is in contact with the unlocking block 8 through a slope. When the unlocking block 8 retracts into the fixed plate 2.2, the unlocking block 8 will move the retraction locking block 7 downward, so that the retraction locking block 7 is disengaged from the clamping groove 4.1.1. When it is necessary to disassemble the lifting device 2, the lifting device 2 can be moved first, so that the unlocking block 8 moves above the contact block 11. Then the sliding block 4.1 is manually pressed back to the fixed plate 2.2 to release the limiting effect of the sliding block 4.1 on the lifting device 2. Then the retraction locking block 7 is clamped into the clamping groove 4.1.1. The lifting device 2 can be pulled out of the first through hole 1.1. It is not necessary to press the sliding block 4.1 all the time during disassembly. The disassembly process is more convenient. During installation, the unlocking block 8 will be in contact with the contact block 11, so that the unlocking block 8 retracts into the fixed plate 2.2 and moves the retraction locking block 7 downward through the slope, so that the retraction locking block 7 is disengaged from the clamping groove 4.1.1. The automatic resetting of the retraction locking block 7 during installation is realized. The situation that the worker forgets to reset the retraction locking block 7 and the sliding block 4.1 cannot be normally limited is avoided.

Claims

1. A live-line work lifting device for straight pole reconstruction, comprising a lifting device, a lifting device and a cross arm fixer, a first through hole for passing through the lifting device is arranged on the lifting device, the lifting device can be up and down through the first through hole of the lifting device, and the cross arm fixer is connected to one side of the lifting device, characterized in that, The cross arm fixer is detachably connected with the lifting device, the cross arm fixer is provided with an installation slot with an upward opening, the lifting device comprises a fixed frame provided with an installation plate matched with the installation slot, and the lower end of the installation plate extends into the installation slot and is in contact with the bottom surface of the installation slot; The lifting device is detachably connected with the lifting device, the lower end of the lifting device is smaller than the size of the first through hole, so that the lower end of the lifting device can penetrate into the first through hole; the position close to the lower end of the lifting device is provided with a limiting piece detachably connected with the lifting device; the lifting device comprises a fixed plate, the limiting piece comprises a sliding block and an extension spring, the sliding block is connected with the fixed plate in the transverse direction, and the extension spring is connected with the sliding block and the fixed plate respectively, so that one end of the sliding block extends out of the fixed plate, the horizontal projection of the sliding block exceeds the contour line of the horizontal projection of the first through hole, and the lower side of the one end of the sliding block extending out of the fixed plate is provided with a first guide inclined surface; The lower side of the one end of the sliding block extending out of the fixed plate is provided with a first guide inclined surface; The lower side of the one end of the sliding block extending out of the fixed plate is provided with a first guide inclined surface; The lower side of the one end of the sliding block extending out of the fixed plate is provided with a first guide inclined surface; 2. A hot line work improvement device for linear pole reconstruction according to claim 1, characterized in that, The installation slot is provided with an avoiding slot with an upward opening at the middle position of the side close to the lifting device, and a reinforcing rib is arranged between the installation plate and the fixed frame and penetrates through the avoiding slot.

3. A hot line work improvement device for linear pole reconstruction according to claim 1, characterized in that, The cross arm fixer is provided with an anti-falling piece, one end of the anti-falling piece penetrates through the cross arm fixer and is clamped with the installation plate.

4. The hot line lifting device for straight pole retrofit live-line work of claim 1, characterized in that, The cross arm fixer is provided with an anti-falling piece, one end of the anti-falling piece penetrates through the cross arm fixer and is clamped with the installation plate. The cross arm fixer is provided with an anti-falling piece and an anti-falling spring, the anti-falling piece is connected with the cross arm fixer in the transverse direction, the anti-falling spring is connected with the anti-falling piece and the cross arm fixer at two ends respectively, so that one end of the anti-falling piece extends into the positioning hole of the installation plate to limit the installation plate, and the upper side of the one end of the anti-falling piece extending out of the installation plate is provided with a second guide inclined surface.

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