Power distribution network overhead line construction multifunctional vehicle

Abstract

A power distribution network overhead line construction multifunctional vehicle comprises a caterpillar band chassis, a swing mechanism and a wire laying device are installed on the caterpillar band chassis, the fixed end of a telescopic arm is hinged to the swing mechanism, a crane system is installed on the telescopic arm, a fly arm is installed on the telescopic arm through a conversion device, and the fly arm is connected with the rotary mechanism. The flying arm can be switched between a storage state and a working state through the switching device, the flying arm is fixed to the fixed end of the telescopic arm when in the storage state, the flying arm is fixed to the telescopic end of the telescopic arm when in the working state, the working platform is detachably connected with the flying arm through the quick changing device, and the cross arm auxiliary tool is installed on the working platform. The crane system, the cross arm auxiliary tool and the wire laying device are integrated on the crawler chassis, so that the main functions of power distribution network erection such as distribution transformer, electric pole and cross arm installation and wire laying can be completed through one vehicle, the working intensity and risk of workers are greatly reduced, and the construction cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of distribution network erection, and particularly to a multi-functional vehicle for overhead line construction of a distribution network. Background Art

[0002] The installation of distribution transformers, poles, cross arms, and the stringing of conductors are important component processes in the distribution network erection process. The cross arm is installed on the upper part of the pole tower of the pole and is used to support the overhead line. It is an important part of the pole tower. Its function is to install insulators and hardware fittings to support the conductors and lightning conductors and keep a certain safe distance as required; the full name of the distribution transformer is the distribution transformer, which is an electrical appliance that transforms AC voltage and current in the distribution system and transmits AC electric energy. The distribution transformer is generally installed on the pole. The stringing of conductors refers to the overall overhead layout of the line after the installation of poles, cross arms, and distribution is completed, and generally uses special conductor stringing equipment;

[0003] At present, the main operation method for installing the cross arm on the pole tower is to climb the pole manually or use a crane or an aerial work platform as a lifting mechanism to lift the cross arm to the installation height for installation. Since the installation position of the cross arm is high, the manual pole climbing operation has a high labor intensity and high danger. For the installation of poles and distribution transformers, a crane must be equipped, and for the stringing of conductors, a transport vehicle must be used to specially transport the conductor stringing equipment to the site. Therefore, if only one crane is used for the installation of poles, distribution transformers, and cross arms, since the crane is not specifically set for installing the cross arm, the crane needs to be additionally equipped with lifting equipment to hoist the cross arm, and the installation and disassembly are very troublesome, with low work efficiency and high cost. If one crane, one aerial work platform, and one transport vehicle are used, although it can greatly improve the construction safety and construction efficiency of workers, the cost of calling multiple devices is high, which greatly increases the construction cost. In addition, the application environment of existing poles is generally in rural areas or relatively remote locations. For these locations in the south, there are generally many mountains and hills, and the ground conditions in these places are mostly muddy, soft soil, steep slopes, field ridge steps, etc. The existing conventional cranes or aerial work platforms have a low driving speed and poor passability, and it is very difficult for them to reach these places, and many places cannot be reached, further increasing the construction difficulty of installing distribution transformers and cross arms in these areas. Summary of the Invention

[0004] The present invention provides a multi-functional vehicle for overhead line construction of a distribution network, which can be used as a crane, can also realize the installation function of the cross arm by connecting the fly arm with the work platform, can also realize the conductor stringing function, greatly reduces the labor intensity and risk of workers, and reduces the construction cost.

[0005] To achieve the above object, the present invention first proposes a multi-functional vehicle for overhead line construction of a distribution network, which includes a crane system, a crawler chassis, a slewing mechanism, a conductor stringing device, a telescopic boom, a fly boom, a quick-change device, a working platform and a cross-arm auxiliary tooling. The crawler chassis is equipped with a slewing mechanism and a conductor stringing device. The fixed end of the telescopic boom is hinged to the slewing mechanism, and the crane system is installed on the telescopic boom.

[0006] The fly boom is installed on the telescopic boom through a conversion device, and the fly boom can be converted between a retracted state and a working state through the conversion device. When the fly boom is in the retracted state, it is fixed to the fixed end of the telescopic boom. When in the working state, the fly boom is fixed to the telescopic end of the telescopic boom. The working platform is detachably connected to the fly boom through a quick-change device. The cross-arm auxiliary tooling is installed on the working platform. The cross-arm auxiliary tooling includes a linear movement mechanism and a slide rail. The linear movement mechanism is installed on the working platform in the vertical direction. The movable end of the linear movement mechanism is arranged outside the working platform and moves in the vertical direction. Two horizontally arranged slide rails are installed on the movable end of the linear movement mechanism. The two slide rails are arranged in parallel. The distance between the two slide rails is greater than the outer diameter of the electric pole. A sliding member for supporting the cross-arm is slidably installed on each slide rail.

[0007] With the above structure, the present invention integrates a crane system, a cross-arm auxiliary tooling and a conductor stringing device on the crawler chassis, so that the main functions of distribution network erection such as distribution transformer, electric pole, cross-arm installation and conductor stringing can be completed by one vehicle. In order to integrate multiple functions on one vehicle, the present invention enables the fly boom to be converted between a retracted state and a working state through a conversion device. When the fly boom is in the retracted state, the whole machine is in a hoisting form, and the hoisting and installation of distribution network equipment such as electric poles and distribution transformers can be realized. When the fly boom is in the working state, the whole machine is in a cross-arm installation state. At this time, the working platform is detachably connected to the fly boom through a quick-change device. During the construction process, the telescopic boom is used to lift the working platform so that the working platform can reach a high place; the fly boom can maintain the level of the working platform during lifting and working. The cross-arm auxiliary tooling on the working platform can be used for the action of sleeving the cross-arm onto the electric pole. During the whole installation process of the cross-arm, the construction personnel only need to stand inside the working platform to operate, which greatly improves the construction safety; during the cross-arm installation process, the cross-arm can be placed flat on the sliding member of the slide rail, and then by using the cooperation of the linear movement mechanism and the slide rail, the actions of lifting the cross-arm over the top of the electric pole, pushing it towards the electric pole and lowering it to the electric pole installation position are completed in sequence. These actions are all completed mechanically without manual lifting, reducing the labor intensity of workers and improving the stability of cross-arm installation at the same time, minimizing the occurrence of accidents to the greatest extent;

[0008] Meanwhile, the whole vehicle of the present invention is equipped with a crawler chassis, thus greatly improving the obstacle-crossing performance of the whole vehicle and ensuring its passing rate when driving on mountain and hilly terrains such as muddy, soft soil, steep slopes, and ridge steps. The working platform can be quickly installed on or quickly separated from the fly arm through a quick-change device. Therefore, according to the actual construction situation, it can be selected whether to first connect the working platform to the whole vehicle and then drive to the construction area, or not to connect the working platform first. In this way, the obstacle-crossing performance of the whole vehicle will be higher. After reaching the construction area subsequently, the telescopic arm and the fly arm are used to connect to the working platform, which improves the controllability of the whole construction and the construction efficiency.

[0009] In the above-mentioned embodiment, the sliding member includes two limiting blocks. The distance between the two limiting blocks matches the distance between the two crossbeams on the cross arm. The top of the limiting block extends vertically out of the slide rail to form a clamping end for connecting with the cross arm. A clamping groove is provided on the clamping end of the limiting block. The width of the clamping groove matches the thickness of the wing plate at the bottom of the cross arm beam.

[0010] Since the crossbeams of the cross arm are generally made of L-shaped steel or I-shaped steel, when the cross arm is placed on the limiting blocks, the wing plates at the bottoms of the two crossbeams of the cross arm are respectively clamped in the clamping grooves of the four limiting blocks, thereby stably horizontally supporting the cross arm on the slide rail. In this way, the cross arm can move vertically through the linear movement mechanism, realizing the lowering of the cross arm from the top of the electric pole to the electric pole installation position. The cross arm realizes horizontal movement along the slide rail through the limiting blocks, thus facilitating the adjustment of the distance between the cross arm and the electric pole and further facilitating the installation of the cross arm.

[0011] As the first embodiment of the linear movement mechanism, the linear movement mechanism includes an upper slider group, a connecting frame, a guide rail, a lower slider group, a connecting rod, and a worm and worm gear lift. An installation area for installing an auxiliary tool for the cross arm is formed by a hollow area on the front railing of the working platform. Two guide rails are fixed vertically on both sides of the installation area of the working platform. The worm and worm gear lift is installed at the bottom of the installation area. The upper slider group and the lower slider group are slidably installed on the guide rail. The upper slider group is arranged above the lower slider group. A connecting frame and a stop rod are arranged between the two guide rails. The two upper slider groups are connected through the connecting frame to realize linkage. The two lower slider groups are connected through the stop rod to realize linkage. The worm and worm gear lift is provided with two movable ends with opposite movement directions. The two movable ends of the worm and worm gear lift are respectively fixedly connected to the connecting frame and the stop rod. Two cross arm seats are respectively hinged on the two upper slider groups. The distance between the two cross arm seats is greater than the outer diameter of the electric pole. The slide rail is fixed on the cross arm seat. One end of the connecting rod is hinged on the lower slider group and the other end is hinged below the cross arm seat.

[0012] With the above structure, the operation of the worm and worm gear lift is used to realize the actions of the upper slider group and the lower slider group approaching and moving away from each other synchronously, so as to realize the conversion between the expanded state and the stored state of the cross arm seat. In the expanded state, the two connecting frames are far away from each other and the distance is the largest. At this time, the cross arm seat is horizontally arranged. In the stored state, the two connecting frames are close to each other and the distance is the smallest, and the cross arm seat is vertically arranged. In this way, when the flying boom lifts the working platform, the slide rail can be folded and stored to prevent interference with other equipment during the lifting process. During installation, the slide rail is unfolded again, which further improves the reliability of construction.

[0013] As the second implementation manner of the linear movement mechanism, the linear movement mechanism includes an upper slider group, a connecting frame, a guide rail, a lower slider group, a connecting rod and a worm and worm gear lift. An installation area for installing a cross arm auxiliary tooling is formed on the front railing of the working platform, and two guide rails are fixed on both sides of the installation area of the working platform in the vertical direction. The worm and worm gear lift is installed at the bottom of the installation area. The upper slider group and the lower slider group are slidably installed on the guide rail. The upper slider group is arranged above the lower slider group. A connecting frame and a stop rod are arranged between the two guide rails. The two upper slider groups are connected by the connecting frame to realize linkage, and the two lower slider groups are connected by the stop rod to realize linkage. Two cross arm seats are respectively hinged on the two upper slider groups, and the distance between the two cross arm seats is greater than the outer diameter of the electric pole. The slide rail is fixed on the cross arm seat. One end of the connecting rod is hinged on the lower slider group, and the other end is hinged below the cross arm seat. The worm and worm gear lift includes a worm and worm gear transmission mechanism and a lead screw. The lead screw is arranged vertically between the two guide rails. The worm and worm gear transmission mechanism is fixed at the bottom of the installation area. The lead screw is driven to rotate by the worm and worm gear transmission mechanism. The worm and worm gear transmission mechanism is driven by a motor or by a rotating handle. Two movable ends are formed by threadedly connecting a first nut and a second nut on the lead screw. The second nut is fixed on the connecting frame, and the first nut is detachably connected to the stop rod. A plurality of second limit holes are arranged on both sides of the installation area along the length direction of the guide rail, and the lower slider group is provided with second pin holes matching the limit holes. The lower slider group realizes the locking of the position on the guide rail through a indexing pin inserted into the second limit holes and the second pin holes.

[0014] In the above implementation manner, the first nut is provided with a first pin hole, and the stop rod is provided with a first limit hole matching the first nut. The first nut realizes the linkage with the stop rod through a pin inserted into the first pin hole and the first limit hole.

[0015] With the above structure, when the overall height of the slide rail needs to be moved, the limit indexing pin is pulled out, and the first nut is connected and fixed to the stop rod through a pin. At this time, the driving turbine and worm transmission mechanism is actuated, and the connecting frame and the stop rod move up or down together. In this way, compared with the previous embodiment, the overall height of the slide rail can be adjusted, which further increases the adjustment range of the cross arm in the height direction during installation and improves the adaptability and accuracy of installation.

[0016] At the same time, this embodiment can also achieve the deployment or storage of the slide rail. Simply fix the lower slider group on both sides of the installation area through the limit indexing pin, and pull out the pin between the first nut and the stop rod. Driven by the turbine and worm lift, at this time, only the connecting frame moves up or down, while the stop rod does not move, and the deployment or storage of the slide rail can also be achieved.

[0017] In this embodiment, the telescopic arm includes a basic arm and a plurality of arm sections slidably sleeved together on the basic arm. The conversion device includes connecting lugs installed on both sides of the outermost arm section and a support locking frame installed on the basic arm near one end of the arm section for supporting the flying arm. The flying arm is detachably connected to the outermost arm section through a connecting bracket, so that the flying arm has a working state and a storage state.

[0018] In the working state, both sides of the connecting bracket are detachably hinged to the connecting lugs on both sides of the outermost arm section.

[0019] In the storage state, first disassemble one side of the connecting lug and the connecting bracket. The connecting bracket rotates around the other hinge point, and the flying arm rotates and folds to a state close to and parallel to the basic arm. At this time, the flying arm is placed above the support locking frame, and the flying arm is supported by the support locking frame and fixed on the support locking frame. Then, disassemble the other side of the connecting lug and the connecting bracket, and the flying arm is completely separated from the outermost arm section, and the flying arm is fixed on the basic arm of the telescopic arm.

[0020] Furthermore, the connecting lug is a double lug. The connecting bracket includes a flying arm connecting frame and a telescopic arm connecting plate integrally connected to the flying arm connecting frame. The flying arm is hinged to the flying arm connecting frame. Two telescopic arm connecting plates form a group, and two groups of telescopic arm connecting plates are symmetrically fixed on both sides of the flying arm connecting frame. One end of the telescopic arm connecting plate extends out of the flying arm connecting frame to form a single ear plate for connecting to the two ears of the connecting lug. And two single ear plates on the same group of telescopic arm connecting plates form a group. One group of single ear plates respectively matches the positions of the two ears on the connecting lug, and the distance between the two groups of single ear plates matches the distance between the connecting lugs on both sides of the outermost arm section.

[0021] When the flying boom is in the working state, two single-ear plates on the connecting bracket are respectively hinged to two ear seats of the connecting ear seats on both sides of the outermost boom section through locking shafts, so that the connection between the flying boom and the telescopic boom is realized, and the telescopic boom is used to realize the telescoping of the flying boom;

[0022] When the flying boom is in the retracted state, remove the locking shaft of a set of single-ear plates and the connecting ear seat, so that the connecting bracket can rotate around the locking shaft on the other set of single-ear plates, push the flying boom to rotate around the locking shaft on this side until it is parallel to the basic boom, so that the flying boom is placed above the support locking frame, and the flying boom is supported by the support locking frame. Fixed bolt holes are correspondingly arranged on the connecting sides of the flying boom and the support locking frame, and the relative positions of the flying boom and the support locking frame are fixed by bolts installed in the fixed bolt holes. Then remove the locking shaft of the other set of single-ear plates and the connecting ear seat, so that the flying boom is fixed on the basic boom, and the flying boom is completely separated from the outermost boom section.

[0023] In this embodiment, the crane system includes a pulley block, a hook, a steel wire rope and a hydraulic winch. The hook is installed on the movable pulley of the pulley block, the fixed pulley of the pulley block is installed on the outermost boom section, the hydraulic winch is installed at one end of the basic boom away from the hook, and the steel wire rope connects the hydraulic winch and the pulley block. The hydraulic winch realizes the lifting and lowering of the hook through the forward and reverse rotation of the steel wire rope.

[0024] In this embodiment, the crawler chassis includes hydraulic outriggers and the lower chassis of the chassis. Four hydraulic outriggers are symmetrically installed on the front and rear sides of the lower chassis of the chassis. The lower chassis of the chassis includes crawlers, a frame, a drive wheel, a plurality of track wheels, a rocker arm suspension, a carrier wheel, a tensioning cylinder, a tensioning wheel and a buffer. Two groups of rocker arm suspensions are symmetrically hinged on the outer sides of the frame near the middle. The two groups of rocker arm suspensions on the same side are at the same horizontal height and are symmetrically arranged with the center of the frame length as the axis of symmetry. A carrier wheel is also installed on the frame between the two groups of rocker arm suspensions on the same side. Two track wheels are installed on each rocker arm suspension. Drive wheels and tensioning wheels are symmetrically installed at the front and rear ends of the outer sides of the frame respectively. The rotating shaft of the tensioning wheel is hinged to the frame through a swing arm. The cylinder end of the tensioning cylinder is fixed on the frame, and the piston rod end is hinged to the swing arm of the tensioning wheel. The tensioning of the crawler is realized by the swing of the swing arm of the tensioning wheel through the telescoping of the tensioning cylinder; The drive wheel, track wheel, carrier wheel and tensioning wheel on the same side are installed with crawlers, and the crawlers are driven to rotate by the drive wheel. The drive wheel is driven by a hydraulic system. The tensioning cylinder is connected to the hydraulic system through a buffer, and the hydraulic system is powered by a power system.

[0025] In this embodiment, the middle part of the rocker arm suspension is hinged to the frame through a rotating shaft. Two track wheels are symmetrically installed on the rocker arm suspension with the rotating shaft as the center. The two track wheels and the rotating shaft form a triangular frame structure, and the track wheels swing around the rotating shaft through the rocker arm suspension.

[0026] With the above structure, the middle part of the rocker arm suspension is hinged to the outer sides of the vehicle frame through a rotating shaft, and two crawler wheels are symmetrically installed on the rocker arm suspension with the rotating shaft as the center, so that the two crawler wheels and the rotating shaft form a tripod structure. The crawler wheels swing around the rotating shaft through the rocker arm suspension. On the one hand, since the crawler wheels installed on the rocker arm suspension are placed on the outer sides of the vehicle frame, the finally formed crawler is also located on the outer side of the vehicle frame, so that the vehicle frame does not limit the size of the crawler wheels. By assembling large-diameter crawler wheels and adopting the form of rocker arm suspension, the purpose of adapting to complex road conditions such as high and low undulations and increasing the passing ability is achieved. On the other hand, the vehicle frame placed inside the crawler serves as a load-bearing vehicle frame and is then connected to the sub-frame. The sub-frame is used to install the unit equipment, which also facilitates subsequent disassembly and maintenance. In addition, by equipping with hydraulic outriggers, when the whole machine reaches the construction position, the whole machine is in place. By expanding the hydraulic outriggers, the entire walking chassis can be lifted to keep the whole vehicle level, thereby improving the stability of the whole vehicle during the construction process.

[0027] The buffer is used to store the impact energy received by the tensioning cylinder and play a buffering role to increase the service life of the chassis. The crawler is driven to rotate by the driving wheel, and the driving wheel is driven by a hydraulic system, and the hydraulic system is powered by a power system.

[0028] When the whole machine reaches the construction position, the whole machine is in place, the hydraulic outriggers are expanded, and the entire crawler chassis is lifted to keep the whole vehicle level, thereby improving the stability of the whole vehicle during the construction process.

[0029] In this embodiment, a sub-frame is fixed above the vehicle frame, and a second inclination sensor and a leg hinge seat are installed on the sub-frame. A leg hinge seat is provided at each of the four corners of the sub-frame. The hydraulic outrigger includes a swivel base, a travel switch, a leg, a leg cylinder, a support seat and a pressure sensor. The swivel base is rotationally connected to the sub-frame through a pin shaft vertically installed on the sub-frame. One end of the leg is hinged to the lower end of the swivel base through a horizontally arranged tenth shaft, and the other end of the leg is hinged to the support seat through an eleventh shaft. One end of the leg cylinder is hinged to the upper end of the swivel base, and the other end is rotatably installed on the eleventh shaft. The leg is hinged to the leg hinge seat of the sub-frame through the swivel base. A travel switch for detecting the limit angle of the leg rotating in the supporting state is also installed on the swivel base. A pressure sensor for detecting the pressure in the leg cylinder is also installed on the leg cylinder. The second inclination sensor, the pressure sensor and the travel switch are all connected to the control system.

[0030] During use, the construction workers first push the hydraulic outriggers. The hydraulic outriggers rotate on the outrigger hinge seats along the horizontal plane to the working position, then lock the horizontal position of the hydraulic outriggers, and then start the action of the outrigger cylinders, driving the outriggers and the support seats to turn downward. The four hydraulic outriggers are uniformly controlled by the hydraulic system and the automatic leveling system. The control system controls the telescopic amount of each outrigger cylinder according to the inclination signal fed back by the second inclination sensor and the feedback signal of the pressure sensor of the outrigger cylinder to level the subframe. At this time, the pressure sensors of each outrigger feed back the differential pressure signal, and at the same time lift the chassis off the ground. Specifically: when the outrigger turns downward with the outrigger cylinder and collides with the travel switch, this is the maximum height that the chassis can be lifted in the leveled state. The second inclination sensor is a biaxial type, which can detect the inclination angles of the vehicle body in the X and Y axis directions, and adjust the telescopic amount of the corresponding outrigger cylinder according to the feedback value, driving the hydraulic outrigger on the vehicle body side to lift until the vehicle body is in a horizontal state. When the pressure sensors of each outrigger feed back normal signals during this process, the whole vehicle leveling is completed; if there is an abnormal differential pressure signal feedback from an outrigger during the leveling process, it means that the outrigger is not on the ground or the ground where the outrigger is located has settled. Until the outrigger cylinder reaches the maximum stroke, the leveling fails, and it is necessary to manually level and tamp the ground where the outrigger is located.

[0031] After the whole machine is leveled, the telescopic boom is lifted, swung and rotated to the required position, then the telescopic boom performs negative angle amplitude variation and telescoping, and at the same time operates the fly boom to vary the amplitude until the working platform touches the ground and stops moving. Then place the cross arm on the cross arm auxiliary tooling, and at the same time place the installation fittings, etc. on the working platform. After preparation, the telescopic boom varies the amplitude and lifts, and the fly boom varies the amplitude for fine adjustment to make the cross arm auxiliary tooling in the working position. Then the whole machine is locked, and the operation of installing the cross arm on the electric pole starts.

[0032] In this embodiment, a slewing mechanism is further installed on the subframe. The slewing mechanism includes a turntable, a slewing bearing and a boom cylinder boom. The fixed end of the slewing bearing is fixed on the subframe, and the turntable is installed on the movable end of the slewing bearing. The fixed end of the telescopic boom is hinged on the turntable, and one end of the boom cylinder boom is hinged on the turntable and the other end is hinged in the middle of the telescopic boom.

[0033] In this embodiment, a hydraulic system, a power system and an electric control system are further installed on the subframe, and a hood for protecting the power system is installed outside the power system.

[0034] In the above-described embodiment, the working platform includes an operation box, casters, a first inclination sensor, a working bucket, and a radar. A controller is provided inside the operation box, and the controller is used to control the movement of the fly boom. The casters are installed at the bottom of the working bucket for supporting and moving the working bucket on the road surface. Railings are provided around the working bucket. One side of the working bucket is an installation area connected to the cross-arm auxiliary tooling, and the other side is a connection area connected to the quick-change device. The first inclination sensor is installed on the working bucket for detecting the inclination value of the working platform. A plurality of radars for platform obstacle avoidance are installed around the working bucket. The radar and the first inclination sensor are both connected to the controller, and the controller receives the feedback signals of the radar and the first inclination sensor to control the fly boom to achieve automatic leveling of the working platform.

[0035] With the above structure, the operation box on the working platform can serve as a control center, and construction workers can control the lowering or lifting of the fly boom on the working platform. At the same time, by using the radar and the first inclination sensor on the working platform and existing technologies, automatic leveling of the working platform can be achieved. Moreover, through the monitoring and alarm of the radar, the situation of the working platform colliding with other equipment during the lifting and lowering process can also be reduced.

[0036] In the above-described embodiment, the quick-change device includes a quick-change frame, a swing cylinder, a quick-change fixing frame, a fourth shaft, quick-change connecting rods, and a connecting shaft. The fixed end of the swing cylinder is installed on the quick-change frame, and the movable end is fixedly connected to the quick-change fixing frame. The swing cylinder drives the quick-change fixing frame to swing horizontally. A vertically arranged mounting column is provided on the connection area of the working platform, and the quick-change fixing frame is installed on the mounting column of the working platform. The quick-change frame includes two parallelly arranged support plates, and a horizontally arranged force transmission shaft for connecting to the fly boom is fixed at the top between the two support plates. The fly boom is connected to the force transmission shaft through a connecting device.

[0037] With the above structure, the swing cylinder in the quick-change device can achieve the horizontal swing of the working platform, which increases the movement dimension of the working platform, has better environmental adaptability, and can achieve more obstacle avoidance angles.

[0038] A weighing device is also installed between the quick-change device and the working platform. The weighing device includes a top rod, a force sensor, and quick-change connecting rods. Two quick-change connecting rods are respectively hinged to both sides of the quick-change fixing frame through the fourth shaft. Both sides of the quick-change fixing frame are respectively hinged to both sides of the mounting column of the working platform through two quick-change connecting rods. A certain distance is provided between the quick-change fixing frame and the mounting column of the working platform. The quick-change fixing frame, the two quick-change connecting rods, and the mounting column of the working platform form a parallelogram mechanism. A force sensor is fixed on one side of the quick-change fixing frame, and a horizontally arranged top plate is correspondingly fixed on the mounting column of the working platform directly above the force sensor. A vertically arranged top rod is provided on the detection end of the force sensor. During the working state, the top of the top rod abuts against the bottom of the top plate.

[0039] With the above structure, in the initial state, the working platform is placed on the ground. Under the action of its own weight, the quick-change fixing frame moves downward relative to the mounting column around the quick-change connecting rod, and the ejector rod does not contact the top plate, so no weighing is required. In the working state, the quick-change device is lifted, and the quick-change fixing frame moves upward relative to the mounting column. At this time, the ejector rod contacts the top plate and starts weighing. By using a parallelogram mechanism, the load exerted on the ejector rod by the working platform and the load thereon through the top plate is always a vertical force, which is the true load of the working platform, realizing accurate weighing of the platform. The force sensor is connected to the controller, and the fly arm is controlled by the controller. The total weight of the working platform is calculated by the weighing device to ensure that the total load is within the specified range. When overloaded, the lifting is stopped to prevent accidents caused by overload.

[0040] In the above embodiment, the connecting device includes a connecting frame, a guiding shaft, a stop pin and a safety pin. One end of the connecting frame is provided with two parallelly arranged first connecting plates for connecting with the fly arm, and the other end of the connecting frame is provided with two parallelly arranged second connecting plates for connecting with the quick-change frame. The top of the second connecting plate is provided with a hook matching the size of the force transmission shaft. A horizontally arranged guiding shaft is also fixed on the outer side of the second connecting plate. The support plate is provided with a guiding groove at the corresponding position of the guiding shaft. The second connecting plate and the support plate are also provided with safety pin holes with matching positions. In the connected state, the hook at the top of the second connecting plate is clamped on the force transmission shaft, and the second connecting plate rotates around the force transmission shaft, so that the two second connecting plates are inserted between the two support plates. The guiding shaft on the second connecting plate enters the guiding groove of the support plate, and the safety pin holes on the second connecting plate and the support plate are communicated. The safety pin is inserted into the safety pin holes of the second connecting plate and the support plate to fix the relative positions of the second connecting plate and the support plate.

[0041] The connecting device is a device that is used in cooperation with the quick-change device to achieve quick connection. By installing and removing the safety pin, the quick connection and disconnection of the connecting device and the quick-change device can be completed, realizing the quick connection and disconnection of the fly arm and the working platform.

[0042] In the above embodiment, an L-shaped plate is fixed on the outer side of the second connecting plate. The guiding shaft is fixed between the L-shaped plate and the second connecting plate. The L-shaped plate and the second connecting plate are correspondingly provided with shaft holes matching the size of the guiding shaft. Both ends of the guiding shaft pass through the shaft holes and the two ends of the guiding shaft are limited by the stop pin.

[0043] In the above embodiment, a fly arm is further included. The fly arm includes a connecting bracket, a leveling oil cylinder, a boom, a fly arm luffing oil cylinder, a link mechanism and a connecting device.

[0044] The connecting bracket is used to connect with the telescopic end of the telescopic arm. The upper end of the connecting bracket is hinged with the luffing arm, and the lower end is hinged with the fly jib luffing oil cylinder. The other end of the fly jib luffing oil cylinder is hinged with the other end of the luffing arm. The luffing of the luffing arm is realized by the telescoping of the fly jib luffing oil cylinder.

[0045] The linkage mechanism includes an inner link and an outer link. One ends of the inner link and the outer link are hinged through a seventh shaft. The other end of the inner link is hinged with the luffing arm. The other end of the outer link is hinged with the middle part of the first connecting plate of the connecting device bracket. The end of the first connecting plate is hinged on the luffing arm. One end of the leveling oil cylinder is hinged on the luffing arm, and the other end is rotatably connected to the seventh shaft of the linkage mechanism. The telescoping of the leveling oil cylinder drives the inner link of the linkage mechanism to move. The inner link drives the connecting device to rotate around its hinge axis with the luffing arm through the outer link, realizing the up-and-down swing of the connecting device.

[0046] With the above structure, on the one hand, through the fly jib, the up-and-down swing of the connecting device can be controlled. When the working platform is placed on the ground, the quick docking with the quick-change device can be realized through the up-and-down swing of the connecting device. On the other hand, the telescoping of the fly jib luffing oil cylinder on the fly jib can also realize the luffing movement of the fly jib, further improving the control accuracy of the working platform.

[0047] In the above embodiment, the conductor stringing device includes a hydraulic double-drum winch, a tail rope bracket and a stringing block. The hydraulic double-drum winch and the tail rope bracket are both fixed on the crawler chassis. The stringing block is installed on the cross arm at the top of the pole. A pin shaft load cell is installed on the stringing block, and a wire reel is installed on the pin shaft load cell. The pin shaft load cell is used to measure the load of the conductor strung between adjacent poles. The hydraulic double-drum winch includes a double-drum reel driven by a winch hydraulic motor, a winch pressure sensor for monitoring the pressure of the winch hydraulic motor, and a winch speed sensor for monitoring the rotation speed of the double-drum reel. The double-drum reel is used to provide traction for the conductor. The tail rope bracket includes a wire reel driven by a tail rope hydraulic motor. The wire reel is used to wind or release the conductor. The hydraulic double-drum winch is controlled by a winch hydraulic valve group, and the tail rope hydraulic motor is controlled by a tail rope hydraulic valve group. The winch hydraulic valve group, the tail rope hydraulic valve group, the pin shaft load cell, the winch pressure sensor and the winch speed sensor are all connected to the control system. The control system controls the speed of the wire reel for winding or releasing the conductor to match the rotation speed of the double-drum reel. The control system monitors the values of the pin shaft load cell and the winch pressure sensor. When the pin shaft load cell and the winch pressure sensor exceed the preset values, an alarm is issued.

[0048] With the above structure, on the one hand, the hydraulic double-drum winch and the tail rope frame are directly installed on the crawler chassis, enabling the entire device to integrate the function of conductor stringing. In this way, only one vehicle is required to complete the erection of the entire distribution network. On the other hand, based on the principle that the greater the sag and span, the greater the load on the conductor, the warning values of the pin force sensor and the winch pressure sensor can be preset in the control system. The traction process of the conductor can be monitored by means of an alarm. When it is detected that the pressure of the pin force sensor exceeds the warning value, it indicates that the sag is too large. At this time, the winch hydraulic motor can be controlled to speed up, thereby reducing the sag. When it is detected that the pressure of the winch pressure sensor exceeds the warning value, it indicates that the traction force of the conductor is too large. At this time, the winch hydraulic motor is controlled to decelerate to prevent the traction rope from breaking. In this way, it is possible to prevent the traction force of the conductor from being too large or too small, and prevent accidents such as the breaking of the traction rope, the damage of the pulley, and the pulling down of the pole caused by improper or untimely operation. At the same time, the tail rope hydraulic motor is controlled by the synchronous rotation speed of the double-wheel drum to achieve the unity of the winding speed of the double-wheel drum and the wire reel.

[0049] With the above structure, the device has the following advantages:

[0050] (1) In the present invention, a crane system, a cross-arm auxiliary tooling, and a conductor stringing device are integrated on the crawler chassis. In this way, the main functions of the distribution network erection, such as the installation of distribution transformers, poles, and cross-arms, and the conductor stringing, can be completed by one vehicle, which greatly saves the construction cost and improves the construction efficiency.

[0051] (2) Through the conversion device in the present invention, the fly arm can be converted between the storage state and the working state. When the fly arm is in the storage state, the whole machine is in the hoisting form, and the hoisting and installation of distribution network erection equipment such as poles and distribution transformers can be realized. When the fly arm is in the working state, the whole machine is in the cross-arm installation state. At this time, the working platform is detachably connected to the fly arm through the quick-change device. During the construction process, the telescopic arm is used to lift the working platform, enabling the working platform to reach a high place. The fly arm can maintain the level of the working platform during the lifting and working processes. The cross-arm auxiliary tooling on the working platform can be used for the action of sleeving the cross-arm onto the pole. During the entire installation process of the cross-arm, the construction personnel only need to stand inside the working platform to operate, which greatly improves the construction safety. During the cross-arm installation process, the cross-arm can be placed flat on the sliding member of the slide rail, and then, by using the cooperation of the linear movement mechanism and the slide rail, the actions of lifting the cross-arm over the top of the pole, pushing it towards the pole, and lowering it to the pole installation position are completed in sequence. All these actions are completed mechanically without manual lifting, reducing the labor intensity of the workers and improving the stability of the cross-arm installation at the same time, minimizing the occurrence of accidents to the greatest extent.

[0052] (3) The whole vehicle of the present invention is equipped with a crawler chassis, thus greatly improving the obstacle-crossing performance of the whole vehicle and ensuring its passing rate when driving on mountainous and hilly terrains such as muddy, soft soil, steep slopes, and ridge steps. The working platform can be quickly installed on or quickly separated from the flying boom through a quick-change device. Therefore, according to the actual construction situation, it can be chosen to first connect the working platform to the whole vehicle and then drive to the construction area, or not to connect the working platform first. In this way, the obstacle-crossing performance of the whole vehicle will be higher. After reaching the construction area subsequently, the telescopic boom and the flying boom are used to connect to the working platform, thus improving the controllability of the whole construction and enhancing the construction efficiency.

[0053] (4) The operation box on the working platform can serve as a control center. Construction workers can control the lowering or lifting of the flying boom on the working platform. At the same time, by using the radar and the first inclination sensor on the working platform and existing technologies, automatic leveling of the working platform can be achieved. Moreover, through the monitoring and alarming of the radar, the situation of the working platform colliding with other equipment during the lifting and lowering process can also be reduced.

[0054] (5) The swing cylinder in the quick-change device can achieve the horizontal swing of the working platform, thus increasing the movement dimension of the working platform, having better environmental adaptability, and enabling more obstacle-avoidance angles.

[0055] (6) The connecting device is a device that is used in cooperation with the quick-change device to achieve quick connection. Through the installation and removal of the safety pin, the quick connection and disconnection between the connecting device and the quick-change device can be completed, realizing the quick connection and disconnection between the flying boom and the working platform.

[0056] (7) On the one hand, through the flying boom, the up-and-down swing of the connecting device can be controlled. When the working platform is placed on the ground, the quick docking with the quick-change device can be achieved through the up-and-down swing of the connecting device. On the other hand, the telescopic movement of the flying boom luffing cylinder on the flying boom can also achieve the luffing movement of the flying boom, further improving the control accuracy of the working platform.

[0057] (8) The device is also integrated with a wire laying device, which is used to tow the wire. During use, first connect the towing rope at the wire paying-out end to the wire, use the UAV to cross the towing rope over each pole, and manually pass the towing rope through the wire laying pulley. Then wind the towing rope around the double-wheel reel of this device and enter the wire reel through the reciprocating wire arranging mechanism. By starting the hydraulic double-reel winch, the towing of the wire can be achieved. Since the larger the sag and span, the greater the load of the wire, based on this principle, the warning values of the pin force sensor and the winch pressure sensor can be preset in the control system, and the towing process of the wire can be monitored by means of alarm. When it is detected that the pressure of the pin force sensor exceeds the warning value, it indicates that the sag is too large. At this time, the winch hydraulic motor can be controlled to speed up, thereby reducing the sag. When it is detected that the pressure of the winch pressure sensor exceeds the warning value, it indicates that the traction force of the wire is too large. At this time, control the winch hydraulic motor to decelerate to prevent the towing rope from breaking. In this way, it is possible to prevent the traction force of the wire from being too large or too small, and prevent accidents such as the breaking of the towing rope, damage to the pulley, and pulling down of the pole caused by improper or untimely operation. At the same time, the tail rope hydraulic motor is controlled by the synchronous rotation speed of the double-wheel reel to achieve the unification of the wire receiving speeds of the double-wheel reel and the wire reel. Description of the Drawings

[0058] Figure 1 It is a schematic structural diagram of the present invention.

[0059] Figure 2 It is a schematic structural diagram of the crawler chassis of the present invention.

[0060] Figure 3 It is a schematic internal structural diagram of the underframe of the present invention.

[0061] Figure 4 It is a schematic structural diagram of the sub-frame of the present invention.

[0062] Figure 5 It is a schematic structural diagram of the rocker arm suspension of the present invention.

[0063] Figure 6 It is a schematic structural diagram of the buffer of the present invention.

[0064] Figure 7 It is a schematic structural diagram of the hydraulic outrigger of the present invention.

[0065] Figure 8 It is a perspective view of the hydraulic outrigger of the present invention.

[0066] Figure 9 It is a schematic structural diagram of the connection between the fly arm and the telescopic arm of the present invention.

[0067] Figure 10 It is a schematic structural diagram of the telescopic arm of the present invention.

[0068] Figure 11 This is a schematic structural diagram of the connecting bracket of the present invention.

[0069] Figure 12 This is a schematic structural diagram of the flying boom of the present invention.

[0070] Figure 13 This is a schematic structural diagram of the connection state between the flying boom and the working platform of the present invention.

[0071] Figure 14 This is a schematic structural diagram of the link mechanism of the present invention.

[0072] Figure 15 This is a schematic structural diagram of the connecting device of the present invention.

[0073] Figure 16 This is a schematic structural diagram of the quick-change device of the present invention.

[0074] Figure 17 This is a state diagram of the connecting device and the quick-change device of the present invention when preparing to connect.

[0075] Figure 18 This is an exploded view of the connection between the connecting frame and the quick-change frame of the present invention.

[0076] Figure 19 This is a schematic structural diagram of the working platform of the present invention.

[0077] Figure 20 This is a schematic structural diagram of the cross-arm auxiliary tooling of the present invention.

[0078] Figure 21 This is a schematic structural diagram of the worm gear lift of the present invention.

[0079] Figure 22 This is a state diagram of the storage state and the unfolded state of the cross-arm auxiliary tooling of the present invention.

[0080] Figure 23 This is a schematic diagram of the working platform in the working state of the present invention.

[0081] Figure 24 This is a schematic structural diagram of the wire laying device of the present invention;

[0082] Figure 25 This is a schematic structural diagram of the wire-pulling pulley installed on the electric pole of the present invention;

[0083] Figure 26 This is a schematic structural diagram of the hydraulic double-drum winch of the present invention;

[0084] Figure 27 This is a schematic structural diagram of the tail rope bracket of the present invention.

[0085] Figure 28 This is a schematic structural diagram of the reciprocating wire arranging mechanism of the present invention.

[0086] Figure 29 It is a schematic structural diagram of the wire arranging shaft of the present invention.

[0087] Figure 30 It is a schematic structural diagram of the wire pay - out pulley of the present invention.

[0088] Figure 31 It is a schematic structural diagram of the hoisting state of the present invention.

[0089] Figure 32 It is a schematic diagram of the action adjustment of the present invention from the initial state to the working state.

[0090] In the attached drawings, 1. flying boom; 11. connecting bracket; 111. telescopic boom connecting plate; 112. flying boom connecting plate; 113. locking shaft; 12. first shaft; 13. second shaft; 14. leveling oil cylinder; 15. luffing arm; 16. flying boom luffing oil cylinder; 17. third shaft; 18. linkage mechanism; 181. inner link; 182. seventh shaft; 183. outer link; 184. eighth shaft; 185. ninth shaft; 19. connecting device; 191. connecting frame; 192. guiding shaft; 193. stop pin; 194. safety bolt; 195. first connecting plate; 196. second connecting plate; 197. L-shaped plate; 2. quick-change device; 21. quick-change frame; 211. force transmission shaft; 212. support plate; 213. guide groove; 22. swing cylinder; 23. quick-change fixing frame; 24. fourth shaft; 25. quick-change link; 26. ejector rod; 27. force sensor; 28. connecting shaft; 29. top plate; 3. working platform; 31. operation box; 32. caster; 33. first inclination sensor; 34. working bucket; 35. radar; 36. installation area; 37. second limit hole; 4. cross arm auxiliary tooling; 41. upper slider group; 42. connecting rod; 43. guide rail; 44. lower slider group; 45. stop rod; 46. pin; 47. worm gear and worm lift; 471. worm gear and worm transmission mechanism; 472. first nut; 473. lead screw; 474. second nut; 48. indexing pin; 49. fifth shaft; 410. link; 411. sixth shaft; 412. limit block; 413. slide rail; 414. cross arm seat; 415. card slot; 5. conversion device; 51. connecting ear seat; 52. support locking frame; 6. crawler chassis; 61. hydraulic outrigger; 611. swivel base; 612. travel switch; 613. tenth shaft; 614. outrigger; 615. outrigger oil cylinder; 616. eleventh shaft; 617. support seat; 618. pressure sensor; 62. second inclination sensor; 63. hydraulic system; 64. engine hood; 65. subframe; 651. outrigger hinge seat; 6511. outrigger limit shaft; 6512. outrigger rotating shaft; 6513. sensing element; 652. engine connecting seat; 653. cargo box; 66. power system; 67. electric control system; 68. underframe of chassis; 681. crawler; 682. frame; 683. drive wheel; 684. track wheel; 685. rocker arm suspension; 6851. rocker arm rotating shaft; 686. idler wheel; 687. tensioning oil cylinder; 688. tensioning wheel; 689. buffer; 6891. accumulator; 6892. throttle valve; 6893. valve block; 6894. joint; 6895. pressure gauge; 7. slewing mechanism; 71. turntable; 72. twelfth shaft; 73. thirteenth shaft; 74. slewing bearing; 75. luffing oil cylinder boom; 8. telescopic boom; 81. pulley block; 82. hook; 83. wire winder; 84. steel wire rope; 85. hose reel; 86. hydraulic winch; 87. outermost boom section; 9. conductor stringing device; 91. towing rope; 92. hydraulic double-drum winch921, winch hydraulic valve group; 922, winch pressure sensor; 923, winch hydraulic motor; 924, winch speed reducer; 925, winch speed sensor; 926, winch gearbox; 927, double-wheel drum; 928, winch connecting frame; 929, winch chassis; 93, tail rope frame; 931, wire reel; 932, reciprocating wire arranging mechanism; 9321, wire pressing roller; 9322, wire arranging wheel; 9323, half-moon pin; 9324, wire arranging shaft sleeve; 9325, wire arranging connecting frame; 9326, semi-circular sliding sleeve; 933, wire arranging shaft; 9331, reciprocating thread; 934, tail rope guiding shaft; 935, tail rope hydraulic valve group; 936, wire reel support; 937, tail rope hydraulic motor; 938, synchronous transmission mechanism; 9381, driving sprocket; 9382, third driven sprocket; 9383, first chain; 9384, second chain; 9385, first driven sprocket; 9386, second driven sprocket; 94, wire releasing pulley; 941, wire releasing connecting frame; 942, wire releasing wheel; 943, pin shaft force measuring sensor; 101, cross arm; 10, electric pole; Detailed implementation manners

[0091] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0092] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0093] As Figures 1 to 32 shown: A multi-functional vehicle for overhead line construction of a distribution network includes a crane system, a crawler chassis 6, a slewing mechanism 7, a conductor spreading device 9, a telescopic boom 8, a flying boom 1, a quick-change device 2, a work platform 3, and a cross arm auxiliary tooling 4.

[0094] As Figure 1 shown, the crawler chassis 6 is equipped with a slewing mechanism 7 and a conductor spreading device 9. The fixed end of the telescopic boom 8 is hinged to the slewing mechanism 7. The telescopic boom 8 is equipped with a crane system. The flying boom 1 is installed on the telescopic boom 8 through a conversion device. The flying boom 1 can be converted between a retracted state and a working state through the conversion device. When the flying boom 1 is in the retracted state, the whole machine is in a hoisting form and is fixed to the fixed end of the telescopic boom 8. When in the working state, the whole machine is in a cross arm installation state, and the flying boom 1 is fixed to the telescopic end of the telescopic boom 8,

[0095] The cross arm auxiliary tooling 4 is installed on the working platform 3. When the whole machine is in the cross arm installation state, the working platform 3 is detachably connected to the fly arm 1 through the quick-change device 2. The quick-change device 2 is connected to the working platform 3 through a swing cylinder 22 that swings in the horizontal direction, and the swing cylinder 22 can drive the working platform 3 to swing;

[0096] As Figures 9 to 11 shown, the telescopic arm 8 includes a basic arm and a plurality of arm sections that are slidably sleeved together on the basic arm. The outermost section of the arm section is the outermost end arm section 87. The conversion device includes connecting ear seats 51 installed on both sides of the outermost end arm section 87 and a support locking frame 52 installed on the basic arm near one end of the arm section for supporting the fly arm. The fly arm 1 is detachably connected to the outermost end arm section 87 through a connecting bracket 11, so that the fly arm has a working state and a storage state.

[0097] In the working state, both sides of the connecting bracket 11 are detachably hinged to the connecting ear seats 51 on both sides of the outermost end arm section 87.

[0098] In the storage state, one side connecting ear seat 51 is detached from the connecting bracket 11, and the connecting bracket 11 rotates around the other hinge point. The fly arm 1 rotates and folds to a state close to and parallel to the basic arm. At this time, the fly arm 1 is placed above the support locking frame 52, and the fly arm 1 is supported by the support locking frame 52. Fixed bolt holes are correspondingly arranged on the connecting sides of the fly arm 1 and the support locking frame 52. Through the bolts installed in the fixed bolt holes, the fly arm 1 can be fixed on the support locking frame 52, and then the other side connecting ear seat 51 and the connecting bracket 11 are removed, and the fly arm 1 is completely separated from the outermost end arm section 87.

[0099] Specifically: The connecting ear seat 51 is a double ear seat. The connecting bracket 11 includes a fly arm connecting frame 112 and a telescopic arm connecting plate 111 connected to the fly arm connecting frame 112 as a whole. A first shaft 12 is installed on the fly arm connecting frame 112. Two telescopic arm connecting plates 111 are in a group, and two groups of telescopic arm connecting plates 111 are symmetrically fixed on both sides of the fly arm connecting frame 112. One end of the telescopic arm connecting plate 111 extends out of the fly arm connecting frame to form a single ear plate for connecting with the connecting ear seat 51. And the two single ear plates on the same group of telescopic arm connecting plates 111 are in a group. A group of single ear plates respectively match the positions of the two ear seats on the connecting ear seat 51. The distance between the two groups of single ear plates matches the distance between the connecting ear seats 51 on both sides of the outermost end arm section 87.

[0100] When the fly arm is in the working state, the two groups of single ear plates on the connecting bracket 11 are respectively hinged to the two ear seats of the connecting ear seats 51 on both sides of the outermost end arm section 87 through locking shafts 113, so as to realize the connection between the fly arm 1 and the telescopic arm 8, and the telescopic of the fly arm 1 is realized through the telescopic arm 8.

[0101] When the flying boom is in the stowed state, remove a set of single ear plates and the locking shaft 113 on the connecting ear seat 51, so that the connecting bracket 11 can rotate around the locking shaft 113 on the other set of single ear plates. Push the flying boom 1 to rotate around the locking shaft 113 on this side until it is parallel to the basic boom, so that the flying boom 1 is placed above the support locking frame 52. The flying boom 1 is supported by the support locking frame 52, and the relative positions of the flying boom 1 and the support locking frame 52 are fixed by bolts. Then remove the locking shaft 113 on this side. At this time, the flying boom 1 is fixed on the basic boom 83 and is completely separated from the outermost boom section 87;

[0102] As Figure 10 shown, the crane system 6 includes a pulley block 81, a hook 82, a winch 83, a steel wire rope 84, a hose reel 85, and a hydraulic winch 86. The hook 82 is installed on the movable pulley of the pulley block 81, and the fixed pulley of the pulley block 81 is installed on the outermost boom section 87. The hydraulic winch 86 is installed at one end of the basic boom away from the hook 82. The steel wire rope 84 drives and connects the hydraulic winch 86 and the pulley block. The hydraulic winch 86 realizes the lifting and lowering of the hook through the forward and reverse rotation of the steel wire rope 84. The hose reel 83 and the hose reel 85 are both installed on the basic boom and are respectively used for the retraction and extension of the cable and the hydraulic pipe.

[0103] As Figures 2 to 12 shown, the crawler chassis 6 includes hydraulic outriggers 61 and the lower chassis 68. The lower chassis 68 includes crawler belts 681, a frame 682, a drive wheel 683, a plurality of track wheels 684, a rocker arm suspension 685, a carrier roller 686, a tensioning cylinder 687, a tensioning wheel 688, and a buffer 689. A sub-frame 65 is fixed above the frame 682, and a slewing mechanism 7, a hydraulic system 63, a power system 66, and an electric control system 67 are installed on the sub-frame 65. A hood 64 for protecting the power system 66 is installed outside the power system 66. The crawler belts 681 are made of rubber crawler belts;

[0104] On both outer sides of the frame 682, near the middle positions, two groups of rocker arm suspensions 685 are symmetrically hinged respectively. The middle part of the rocker arm suspension 685 is hinged to the frame 682 through a rocker arm rotating shaft 6851. Two track wheels 684 are symmetrically installed on the rocker arm suspension 685 with the rocker arm rotating shaft 6851 as the center. The two track wheels 684 and the rocker arm rotating shaft 6851 form a triangular frame structure. The two track wheels 684 can swing around the rocker arm rotating shaft 6851 through the rocker arm suspension 685. The two groups of rocker arm suspensions 685 on the same side of the frame 682 are at the same horizontal height and the two groups of rocker arm suspensions 685 are symmetrically arranged with the center of the frame length as the axis of symmetry. A carrier roller 686 is also installed on the frame 682 between the two groups of rocker arm suspensions 685 on the same side.

[0105] At the front and rear ends on the two outer sides of the vehicle frame 682, a driving wheel 683 and a tensioning wheel 688 are respectively installed. The tensioning wheel 688 is connected to the vehicle frame 682 through a tensioning oil cylinder 687. Specifically: the rotating shaft of the tensioning wheel 688 is hinged to the vehicle frame 682 through a swing arm. The cylinder barrel end of the tensioning oil cylinder 687 is fixed on the vehicle frame 682, and the piston rod end is hinged to the swing arm of the tensioning wheel 688. By extending and retracting the tensioning oil cylinder 687, the swing arm of the tensioning wheel 688 swings to realize the tensioning of the crawler 681; on the same side of the vehicle frame 682, a crawler 681 is installed on the driving wheel 683, the idler wheel 684, the carrier roller 686 and the tensioning wheel 688. The crawler 681 is driven to rotate by the driving wheel 683. The driving wheel 683 is driven by a hydraulic system 63. The tensioning oil cylinder 687 is connected to the hydraulic system 63 through a buffer 689. The hydraulic system 63 is powered by a power system 66.

[0106] The buffer 689 includes a valve block 6893. An accumulator 6891, a throttle valve 6892, a joint 6893 and a pressure gauge 6895 are connected to the valve block 6893. The tensioning oil cylinder 687 is connected to the joint 6893 through a hydraulic hose. The throttle valve 6892 is communicated with the hydraulic system 63 through a hydraulic hose. When the crawler needs to be tensioned, the throttle valve 6892 is opened, and the hydraulic oil of the hydraulic system 63 pushes the tensioning oil cylinder 687 to act to tension the crawler. When the impact energy generated by the crawler encountering an obstacle during driving, through the retraction of the tensioning oil cylinder 687, the accumulator 689 is compressed in the form of the return of the hydraulic oil, so that the impact energy is converted into compression energy to reduce the impact on the vehicle body.

[0107] The auxiliary vehicle frame 65 includes a leg hinge seat 651, an engine connection seat 652 and a cargo box 653. The leg hinge seat is used for installing hydraulic legs. The cargo box is used for storing and transporting goods such as cross arms and fittings. The power system 66 is installed on the auxiliary vehicle frame 65 through the engine connection seat 652. A leg hinge seat 651 is provided at each of the four corners of the auxiliary vehicle frame 65. An articulated hole is provided on the leg hinge seat 651. Two limit holes are provided on the leg hinge seat 651 centered on the articulated hole. A leg rotating shaft 6512 is inserted into the articulated hole. The leg rotating shaft 6512 is used for hinging the hydraulic leg 61 so that it can rotate within the leg hinge seat 651. A leg limit shaft 6511 is inserted into the limit hole. The leg limit shaft 6511 is used to limit the rotation angle of the hydraulic leg 61 in the horizontal plane. A sensing element 6513 for detecting whether the leg limit shaft 6511 is inserted is further provided in the two limit holes on the leg hinge seat 651. It is connected to the control system through the sensing element 6513 as a judgment on whether the hydraulic leg 61 extends or retracts to prevent the accidental extension and retraction of the hydraulic leg 61 in the non-working state.

[0108] A second inclination sensor 62 is installed on the subframe 65. The hydraulic outrigger 61 includes a swivel base 611, a travel switch 612, an outrigger 614, an outrigger cylinder 615, a support base 617, and a pressure sensor 618. One end of the outrigger 614 is hinged to the lower end of the swivel base 611 through a horizontally arranged tenth shaft 613, and the other end of the outrigger 614 is hinged to the support base 617 through a horizontally arranged eleventh shaft 616. One end of the outrigger cylinder 615 is hinged to the upper end of the swivel base 611, and the other end is rotatably installed on the eleventh shaft 616. The swivel base 611 is provided with a shaft hole matching the outrigger rotating shaft 6512 and a pin hole matching the outrigger limit shaft 6511. The swivel base 611 is installed in the outrigger hinge seat 651, and the swivel base 611 and the outrigger hinge seat 651 are hinged through an outrigger rotating shaft 6512 vertically inserted into the hinge hole and the shaft hole. When the hydraulic outrigger 61 rotates around the outrigger rotating shaft 6512, in the working position and the non - working position, the position of the hydraulic outrigger 61 is locked by an outrigger limit shaft 6511 inserted into the limit hole and the pin hole, ensuring the stability of the hydraulic outrigger 61 in the working and non - working states. A travel switch 612 for detecting the rotation limit angle of the outrigger 614 in the working state is also installed on the swivel base 611. A pressure sensor 618 for detecting the pressure in the outrigger cylinder 615 is also installed on the outrigger cylinder 615. The second inclination sensor 62, the pressure sensor 618, and the travel switch 612 are all connected to the control system.

[0109] As Figure 10 shown, the slewing mechanism 7 includes a turntable 71, a slewing bearing 74, and a luffing cylinder boom 75. The fixed end of the slewing bearing 74 is fixed on the subframe 65, and the turntable 71 is installed on the movable end of the slewing bearing 74. The fixed end of the telescopic boom 8 is hinged to the turntable 71 through a twelfth shaft 72, and one end of the luffing cylinder boom 75 is hinged to the turntable 71 through a thirteenth shaft 73, and the other end is hinged to the middle of the telescopic boom 8.

[0110] As Figure 20 shown, the cross - arm auxiliary tooling 4 includes a linear moving mechanism, a limit block 412, a slide rail 413, and a cross - arm seat 414. The linear moving mechanism is installed on the working platform 3 in the vertical direction. The movable end of the linear moving mechanism is arranged outside the working platform 3 and moves in the vertical direction. Two cross - arm seats 414 are installed on the movable end of the linear moving mechanism. The distance between the two cross - arm seats 414 is greater than the outer diameter of the electric pole. A horizontally arranged slide rail 413 is installed on the cross - arm seat 414. The two slide rails 413 are arranged in parallel, and the distance between the two slide rails 413 is greater than the outer diameter of the electric pole.

[0111] Two limiting blocks 412 are slidably mounted on each slide rail 413. The distance between the two limiting blocks 412 matches the distance between the two crossbeams on the cross arm. The top of the limiting block 412 extends vertically out of the slide rail 413 to form a clamping end for connecting with the cross arm. A clamping groove 415 is provided on the clamping end of the limiting block 412. The width of the clamping groove 415 matches the thickness of the wing plate at the bottom of the crossbeam of the cross arm. Since the crossbeams of the cross arm are generally made of L-shaped steel or I-shaped steel, when the cross arm is placed on the limiting blocks 412, the wing plates at the bottoms of the two crossbeams of the cross arm are respectively clamped in the clamping grooves of the four limiting blocks 412, thereby horizontally supporting the cross arm on the slide rail 413. In this way, the cross arm can move vertically through the linear movement mechanism, realizing the lowering of the cross arm from the top of the electric pole to the installation position of the electric pole. The cross arm realizes horizontal movement along the slide rail 413 through the limiting blocks 412, so as to facilitate the adjustment of the distance between the cross arm and the electric pole and further facilitate the installation of the cross arm.

[0112] Specifically: In this embodiment, the linear movement mechanism includes an upper slider group 41, a connecting rod 42, a guide rail 43, a lower slider group 44, a connecting rod 410, and a worm and worm gear lift 47.

[0113] A hollow area for installing the cross arm auxiliary tooling 4 is provided on the front railing of the working platform 3 to form an installation area. Two guide rails 43 are fixedly arranged on both sides of the installation area of the working platform 3 in the vertical direction. The worm and worm gear lift 47 is installed at the bottom of the installation area. An upper slider group 41 and a lower slider group 44 are slidably mounted on the guide rail 43. The upper slider group 41 is arranged above the lower slider group 44. A connecting rod 42 and a stop rod 45 are arranged between the two guide rails 43. The two upper slider groups 41 are connected by the connecting rod 42 to achieve linkage, and the two lower slider groups 44 are connected by the stop rod 45 to achieve linkage;

[0114] As an implementation manner of the worm and worm gear lift 47 of this device, the worm and worm gear lift 47 is provided with two movable ends with opposite movement directions. The two movable ends of the worm and worm gear lift 47 are respectively connected to the connecting rod 42 and the stop rod 45. The cross arm seat 414 is hinged to the upper slider group 41 through a sixth shaft 411. One end of the connecting rod 410 is hinged to the lower slider group 44 through a fifth shaft 49, and the other end is hinged below the cross arm seat 414. With the above structure, the operation of the worm and worm gear lift 47 realizes the synchronous approach and mutual separation of the upper slider group 41 and the lower slider group 44, so as to realize the conversion between the unfolded state and the stored state of the cross arm seat 414. In the unfolded state, the two connecting rods 42 are far away from each other and the distance is the largest. At this time, the cross arm seat 414 is horizontally arranged. In the stored state, the two connecting rods 42 are close to each other and the distance is the smallest, and the cross arm seat 414 is vertically arranged;

[0115] In the above embodiments, further, the worm gear lift 47 includes a worm gear transmission mechanism and a lead screw 473. The lead screw 473 is disposed vertically between the two guide rails 43. The worm gear transmission mechanism is fixed to the bottom of the installation area. The lead screw 473 is driven to rotate by the worm gear transmission mechanism. The worm gear transmission mechanism is driven by a motor or by a rotary handle. The lead screw 473 is provided with a first thread and a second thread with opposite rotation directions. A first nut 472 is connected to the first thread of the lead screw 473, and a second nut 474 is connected to the second thread to form two movable ends. The first nut 472 and the second nut 474 are respectively fixed to the stop rod 45 and the connecting rod 42. A plurality of second limit holes are arranged on both sides of the installation area along the length direction of the guide rail 43. The lower slider group 44 is provided with second pin holes matching the second limit holes. The lower slider group 44 realizes the locking of the position of the lower slider group 44 on the guide rail through a indexing pin 48 inserted into the second limit holes and the second pin holes.

[0116] As another embodiment of the worm gear lift 47 of the present device, the worm gear lift 47 is provided with two movable ends. The worm gear lift 47 includes a worm gear transmission mechanism and a lead screw 473. The lead screw 473 is disposed vertically between the two guide rails 43. The worm gear transmission mechanism is fixed to the bottom of the installation area. The lead screw 473 is driven to rotate by the worm gear transmission mechanism. The worm gear transmission mechanism is driven by a motor or by a rotary handle. A first nut 472 and a second nut 474 are threadedly connected to the lead screw 473 to form two movable ends. The second nut 474 is fixed to the connecting rod 42. The first nut 472 is detachably connected to the stop rod 45. Specifically: the first nut 472 is provided with a first pin hole, and the stop rod 45 is provided with a first limit hole matching the first nut 472. The first nut 472 realizes the linkage between the first nut 472 and the stop rod 45 through a pin 46 inserted into the first pin hole and the first limit hole. A plurality of second limit holes are arranged on both sides of the installation area along the length direction of the guide rail 43. The lower slider group 44 is provided with second pin holes matching the limit holes. The lower slider group 44 realizes the locking of the position of the lower slider group 44 on the guide rail through a indexing pin 48 inserted into the second limit holes and the second pin holes.

[0117] During use, when it is necessary to integrally move the height of the slide rail 413, the indexing pin 48 is pulled out, and the first nut 472 is connected and fixed to the stop rod 45 through the pin 46. At this time, the worm gear transmission mechanism is driven, and the connecting rod 42 and the stop rod 45 move upward or downward together, so as to realize the overall up and down adjustment of the slide rail 413, and further improve the accuracy of the cross arm installation.

[0118] When the slide rail 413 needs to be deployed or retracted, the lower slider group 44 is fixed on both sides of the installation area through the limit indexing pin 48. The pin 46 between the first nut 472 and the stop rod 45 is pulled out. Driven by the worm gear lift 47, at this time, the connecting rod 42 moves upward or downward, while the stop rod 45 does not move, so as to realize the deployment or retraction of the slide rail 413.

[0119] As Figure 19 shown, the working platform 3 includes an operation box 31, casters 32, a first inclination sensor 33, a working bucket 34 and a radar 35. A controller is provided in the operation box 31 to control the movement of the flying boom 1. The casters 32 are installed at the bottom of the working bucket 34 for supporting and moving the working bucket 34 on the road surface. Railings are provided around the working bucket 34. One side of the working bucket 34 is an installation area connected to the cross arm auxiliary tooling 4, and the other side is a connection area connected to the quick change device 2. The first inclination sensor 33 is installed on the working bucket 34 to detect the inclination value of the working platform and provide data for leveling the working platform. A plurality of radars 35 for platform obstacle avoidance are installed around the working bucket 34. The radar 35 and the first inclination sensor 33 are both connected to the controller.

[0120] As Figures 16 to 18 shown, the quick change device 2 includes a quick change frame 21, a swing cylinder 22, a quick change fixing frame 23, a fourth shaft 24, a quick change connecting rod 25 and a connecting shaft 28. The fixed end of the swing cylinder 22 is installed on the quick change frame 21, and the movable end is fixedly connected to the quick change fixing frame 23 through the connecting shaft 28. The swing cylinder 22 drives the quick change fixing frame 23 to swing horizontally. A vertically arranged mounting column is provided on the connection area of the working platform 3, and the quick change fixing frame 23 is installed on the mounting column of the working platform 3;

[0121] As Figure 16As shown, a weighing device is also installed between the quick-change device 2 and the working platform 3. The weighing device can calculate the total weight of the working platform 3 and all the loads on the working platform 3. In this way, when the fly arm is lifted, the total weight of the working platform 3 is calculated by the weighing device to ensure that the total load is within the limited range and prevent accidents caused by overload. The weighing device includes a push rod 26, a force sensor 27, and a quick-change connecting rod 25. Two quick-change connecting rods 25 are respectively hinged on both sides of the quick-change fixing frame 23 through a fourth shaft 24. Both sides of the quick-change fixing frame 23 are respectively hinged to both sides of the mounting column of the working platform 3 through two quick-change connecting rods 25. There is a certain distance between the quick-change fixing frame 23 and the mounting column of the working platform 3. The quick-change fixing frame 23, the two quick-change connecting rods 25, and the mounting column of the working platform 3 form a parallelogram mechanism, enabling the quick-change fixing frame 23 to move parallel up and down relative to the mounting column of the working platform 3 by a certain distance. A force sensor 27 is fixed on one side of the quick-change fixing frame 23. A horizontally arranged top plate 29 is correspondingly fixed on the mounting column of the working platform 3 directly above the force sensor 27. A vertically arranged push rod 26 is arranged on the detection end of the force sensor 27. In the initial state, the quick-change fixing frame 23 moves downward relative to the mounting column around the quick-change connecting rod 25 under its own weight, and the push rod 26 does not contact the top plate 29. During the working state, when the quick-change device 2 is lifted, the quick-change fixing frame 23 moves upward relative to the mounting column. At this time, the push rod 26 contacts the top plate 29 and starts weighing. The force sensor 27 is connected to the controller. The fly arm movement is controlled by the controller. By using the parallelogram mechanism, the load exerted on the push rod 26 by the working platform 3 and the load thereon through the top plate 29 is always a vertical force, which is the true load of the working platform 3, realizing accurate weighing of the platform.

[0122] Further, the side of the top of the push rod 26 in contact with the top plate 29 is a semi-circular head. The bottom of the push rod 26 is provided with an external thread. The push rod 26 is threadedly connected to the threaded hole on the detection end of the force sensor 27. Through the thread fit, the height of the push rod 26 can be adjusted.

[0123] The quick-change frame 21 includes two parallelly arranged support plates 212. Between the two support plates 212 and at their tops, a horizontally arranged force transmission shaft 211 for connecting with the fly arm 1 is fixed. The fly arm 1 is connected to the quick-change frame 21 through a connecting device 19.

[0124] As Figures 13 to 18As shown in the figure, the connecting device 19 includes a connecting frame 191, a guiding shaft 192, a stop pin 193 and a safety bolt 194. One end of the connecting frame 191 is provided with two parallelly arranged first connecting plates 195 for connecting with the flying boom. The other end of the connecting frame 191 is provided with two parallelly arranged second connecting plates 196 for connecting with the quick-change frame 21. The top of the second connecting plate 196 is provided with a hook matching the size of the force-transmitting shaft. A horizontally arranged guiding shaft 192 is also fixed on the outer side of the second connecting plate 196. A guiding groove 213 is arranged at the corresponding position of the supporting plate 212 for the guiding shaft 192. Safety pin holes with matching positions are also arranged on the second connecting plate 196 and the supporting plate 212. In the connected state, the hook at the top of the second connecting plate 196 of the connecting device 19 is first clamped on the force-transmitting shaft 211, and then the second connecting plate 196 rotates with the force-transmitting shaft 211 as the rotation axis, so that the two second connecting plates 196 are inserted between the two supporting plates 212 of the quick-change frame 21. At this time, the guiding shaft 192 on the second connecting plate 196 enters the guiding groove 213 of the supporting plate. By moving the guiding shaft 192 along the guiding groove 213, the positions of the second connecting plate 196 and the supporting plate 212 are adjusted, so that the safety pin holes on the second connecting plate 196 and the supporting plate are communicated. Then, the safety bolt 194 is inserted into the safety pin holes of the second connecting plate 196 and the supporting plate to fix the relative positions of the second connecting plate 196 and the supporting plate. In this way, through the installation and removal of the safety bolt 194, the quick connection and disconnection of the connecting device 19 and the quick-change device 2 can be completed, and the quick connection and disconnection of the flying boom and the working platform can be realized.

[0125] In this embodiment, an L-shaped plate 197 is fixed on the outer side of the second connecting plate 196, and the guiding shaft 192 is fixed between the L-shaped plate 197 and the second connecting plate 196. Specifically, the L-shaped plate 197 and the second connecting plate 196 are correspondingly provided with shaft holes matching the size of the guiding shaft 192. Both ends of the guiding shaft 192 pass through the shaft holes and the two ends of the guiding shaft 192 are limited by the stop pin 193 to prevent the guiding shaft 192 from disengaging from the shaft holes.

[0126] As Figure 12 shown in the figure, the flying boom 1 includes a connecting bracket 11, a leveling oil cylinder 14, a luffing boom 15, a flying boom luffing oil cylinder 16, a linkage mechanism 18 and a connecting device 19.

[0127] One side of the connecting bracket 11 is connected to the telescopic end of the telescopic boom, and the upper end of the other side is hinged to one end of the luffing boom 15 through a first shaft 12, and the lower end is hinged to one end of the flying boom luffing oil cylinder 16. The other end of the flying boom luffing oil cylinder 16 is hinged to the other end of the luffing boom 15 through a third shaft 17. The luffing boom 15 realizes luffing movement through the telescopic movement of the flying boom luffing oil cylinder 16.

[0128] The linkage mechanism 18 includes an inner link 181 and an outer link 183. One ends of the inner link 181 and the outer link 183 are hinged through a seventh shaft 182. The other end of the inner link 181 is hinged to the luffing arm 15 through a ninth shaft 185. The other end of the outer link 183 is hinged to the middle of a first connecting plate 195 of a connecting device 19's connecting frame 191 through an eighth shaft 184. The end of the first connecting plate 195 is hinged to the luffing arm 15. One end of the leveling oil cylinder 14 is hinged to the luffing arm 15 through a second shaft 13, and the other end is rotatably connected to the seventh shaft 182 of the linkage mechanism 18. By the telescopic movement of the leveling oil cylinder 14, the inner link 181 of the linkage mechanism 18 can be driven to move. The inner link 181 drives the outer link 183, and the outer link 183 drives the connecting device 19 to rotate around its hinge axis with the luffing arm 15, so as to realize the up-and-down swing of the connecting device 19. Then, the automatic docking with the quick-change device 2 is realized through the up-and-down swing of the connecting device 19. After the quick-change device 2, the working platform 3 and the fly arm 1 are integrated, through the action of the leveling oil cylinder 14, combined with the feedback signal of the first inclination sensor 33, the system automatically controls the telescopic amount of the leveling oil cylinder 14 to realize the leveling of the working platform.

[0129] As Figures 24 - 30 shown, the wire laying device 9 includes a hydraulic double-drum winch 92, a tail rope frame 93 and a wire-pulling block 94. The hydraulic double-drum winch 92 and the tail rope frame 93 are both fixed on the sub-frame 65. The wire-pulling block 94 is installed on the cross arm 101 at the top of the electric pole 10. The wire-pulling block 94 is connected to a wire reel 942 through a pin shaft force sensor 943. The pin shaft force sensor 943 is used to measure the wire load between the wire reels 942 installed on adjacent electric poles. The hydraulic double-drum winch 92 includes a double-drum 927 driven by a winch hydraulic motor 923, a winch pressure sensor 922 for monitoring the hydraulic oil pressure of the winch hydraulic motor 923, and a winch speed sensor 925 for monitoring the rotation speed of the double-drum 927. The double-drum 927 is used to provide traction force for the wire. The tail rope frame 93 includes a wire reel 931 driven by a tail rope hydraulic motor 937. The wire reel 931 is used to wind or release the wire. The hydraulic double-drum winch 92 is controlled by a winch hydraulic valve group 921. The tail rope hydraulic motor 937 is controlled by a tail rope hydraulic valve group 935. The winch hydraulic valve group 921, the tail rope hydraulic valve group 935, the pin shaft force sensor 943, the winch pressure sensor 922 and the winch speed sensor 925 are all connected to the control system. The control system controls the speed of the wire reel 931 for winding or releasing the wire to match the rotation speed of the double-drum 927. The control system monitors the values of the pin shaft force sensor 943 and the winch pressure sensor 922. When the pin shaft force sensor 943 and the winch pressure sensor 922 exceed the preset values, an alarm is issued.

[0130] The hydraulic double-drum winch 92 includes a winch hydraulic valve group 921, a winch pressure sensor 922, a winch hydraulic motor 923, a winch speed reducer 924, a winch speed sensor 925, a winch gearbox 926, a double-wheel drum 927, a winch connecting frame 928, and a winch chassis 929. The winch chassis 929 is fixed on the sub-frame. The winch gearbox 926 and the double-wheel drum 927 are fixed on the winch chassis 929 through the winch connecting frame 928. The output end of the winch hydraulic motor 923 is connected to the input end of the winch gearbox 926 through the winch speed reducer 924. The output end of the winch gearbox 926 is connected to the rotating shaft of the double-wheel drum 927. The winch hydraulic motor 923 is connected to the hydraulic system through the winch hydraulic valve group 921.

[0131] The tail rope frame 93 includes a wire reel 931, a reciprocating wire arranging mechanism 932, a tail rope hydraulic valve group 935, a wire reel support 936, a tail rope hydraulic motor 937, and a synchronous transmission mechanism 938. The wire reel 931 is rotatably installed on the wire reel support 936 through a rotating shaft. The reciprocating wire arranging mechanism 932 is installed on the wire reel support 936 through a wire arranging shaft 933. The wire arranging shaft 933 is arranged in parallel with the rotating shaft of the wire reel 931. The output end of the tail rope hydraulic motor 937 is connected to the input end of the synchronous transmission mechanism 938. The two output ends of the synchronous transmission mechanism 938 are respectively connected to the rotating shaft of the wire reel 931 and the wire arranging shaft 933. The synchronous transmission mechanism 938 drives the rotating shaft of the wire reel 931 and the wire arranging shaft 933 to rotate synchronously. The rotation of the wire arranging shaft 933 drives the reciprocating wire arranging mechanism 932 to move axially back and forth along the wire arranging shaft 933. The wire passes through the reciprocating wire arranging mechanism 932 and enters the wire reel 931. The reciprocating wire arranging mechanism 932 drives the wire to be orderly wound and unwound along the axis of the wire reel 931, preventing the cable from being wound and knotted.

[0132] As Figure 28 、 29 shown, the reciprocating wire arranging mechanism 932 includes a wire arranging shaft 933, a tail rope guiding shaft 934, a wire pressing roller 9321, a wire arranging wheel 9322, a half-moon pin 9323, a wire arranging shaft sleeve 9324, a wire arranging connecting frame 9325, and a semi-circular sliding sleeve 9326. The wire arranging shaft 933 is rotatably installed on the wire reel support 936. The tail rope guiding shaft 934 is fixed below the wire arranging shaft 933 and is arranged in parallel with the wire arranging shaft 933. A reciprocating thread 9331 is provided on the wire arranging shaft 933. A through hole is provided in the middle of the wire arranging connecting frame 9325. The wire arranging shaft sleeve 9324 is fixed in the through hole. The wire arranging connecting frame 9325 is slidably installed on the wire arranging shaft 933 through the wire arranging shaft sleeve 9324. A half-moon pin 9323 that matches the reciprocating thread 9331 is radially installed on the wire arranging shaft sleeve 9324. The half-moon pin 9323 meshes with the reciprocating thread 9331 as a sleeve of the reciprocating thread 9331.

[0133] A wire arranging wheel 9322 and a wire pressing roller 9321 are rotatably installed on the upper side of the wire arranging connection frame 9325. A gap matching the diameter of the wire is provided between the wire arranging wheel 9322 and the wire pressing roller 9321. The rotating shafts of the wire arranging wheel 9322 and the wire pressing roller 9321 are both parallel to the wire arranging shaft 933. A semi-circular sliding sleeve 9326 is provided at the bottom of the wire arranging connection frame 9325. The wire arranging connection frame 9325 is slidably installed on the tail rope guiding shaft 934 through the semi-circular sliding sleeve 9326. The reciprocating wire arranging mechanism 932 is radially positioned on the wire arranging shaft 933 through a wire arranging shaft sleeve 9324. Through the cooperation of a semi-moon pin 9323 and a reciprocating thread 9331 on the wire arranging shaft 933, and the limitation of the semi-circular sliding sleeve 9326 on the tail rope guiding shaft 934, when the wire arranging shaft 933 rotates, the wire arranging wheel 9322 and the wire pressing roller 9321 on the wire arranging connection frame 9325 move reciprocally.

[0134] The synchronous transmission mechanism 938 includes a driving sprocket 9381, a third driven sprocket 9382, a first chain 9383, a second chain 9384, a first driven sprocket 9385 and a second driven sprocket 9386. The driving sprocket 9381 is installed on the output end of the tail rope hydraulic motor 937. The driving sprocket 9381 is connected to the first driven sprocket 9385 through the first chain 9383. The first driven sprocket 9385 and the second driven sprocket 9386 are coaxially arranged. The second driven sprocket 9386 is connected to the third driven sprocket 9382 through the second chain 9384. The first driven sprocket 9385 and the second driven sprocket 9386 are coaxially connected to the rotating shaft of the wire reel 931 through a sprocket shaft, so as to drive the wire reel 931 to rotate. The third driven sprocket 9382 is coaxially installed on the wire arranging shaft 933. The motor drives the driving sprocket 9381 to rotate, drives the first driven sprocket 9385 to rotate through the first chain 9383. The first driven sprocket 9385 drives the sprocket shaft to rotate, thereby driving the second driven sprocket 9386 and the wire reel 931 to rotate. At the same time, the third driven sprocket 9382 rotates synchronously with the second driven sprocket 9386 through the second chain 9384, and the wire arranging shaft 933 rotates together with the third driven sprocket 9382. While the wire reel 931 rotates, the reciprocating wire arranging mechanism 932 makes a reciprocating motion along the wire arranging shaft 933 driven by the wire arranging shaft 933, so that the wire pulled by the hydraulic double-drum winch 92 is automatically, tightly and sequentially wound on the wire reel 931.

[0135] As Figure 30As shown, the wire-releasing pulley 94 includes a wire-releasing connecting frame 941, a wire-releasing wheel 942 and a pin shaft force sensor 943. When the wire is released, the wire-releasing connecting frame 941 is fixed on the cross arm at the top of the pole, and the wire-releasing connecting frame 941 is installed with a pin shaft force sensor 943. The wire-releasing wheel 942 is rotatably installed on the pin shaft force sensor 943. The pin shaft force sensor 943 is used to monitor the load of the wire within the span. The pin shaft force sensor 943 is provided with a signal transmitting device. The pin shaft force sensor 943 sends the measured data remotely to the control system. Here, the greater the sag and the span, the greater the load on the wire. According to this principle, the pin shaft force sensor 943 and the capstan pressure sensor 922 can be preset. The warning value is used to alarm, which is convenient for workers to monitor. When the pin shaft force sensor 943 detects that the pressure exceeds the warning value, the surface sag is too large, and the capstan hydraulic motor 923 is controlled to speed up, thereby reducing the sag. When the capstan pressure sensor 922 detects that the pressure exceeds the warning value, the capstan hydraulic motor 923 is controlled to slow down. In this way, it can prevent the conductor traction force from being too large or too small, and prevent improper or untimely operation from causing accidents such as breakage of the traction rope 91, damage to the pulley, and pulling down of the electric pole. The capstan speed sensor 925 monitors the speed of the double-wheel drum 927 in real time, and controls the tail rope hydraulic motor 937 synchronously through the speed of the double-wheel drum 927 to achieve the unification of the winding speed of the double-wheel drum 927 and the wire drum 931.

[0136] After the crawler chassis 6 reaches the installation position, the electric pole and the cross arm 101 are erected through the crane system and the cross arm auxiliary tooling 4, the conductor is finally pulled by the conductor spreading device 9. When the cross arm 101 is installed, the wire-releasing pulley 94 is installed on the cross arm 101, and then the traction rope 91 at the wire-releasing end is connected to the conductor. The traction rope 91 is passed over each pole by the drone, and the traction rope 91 is manually passed through the wire-releasing pulley 94. The traction rope 91 is then wound around the double-wheel drum 927 and then enters the wire drum 931 through the reciprocating wire arrangement mechanism 932. The hydraulic double-drum capstan 92 is started to pull the conductor.

[0137] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A multi-functional vehicle for overhead line construction of a distribution network, characterized in that: It includes a crane system, a crawler chassis (6), a slewing mechanism (7), a conductor stringing device (9), a telescopic boom (8), a fly boom (1), a quick-change device (2), a working platform (3) and a cross-arm auxiliary tooling (4). The slewing mechanism (7) and the conductor stringing device (9) are installed on the crawler chassis (6). The fixed end of the telescopic boom (8) is hinged to the slewing mechanism (7). The crane system is installed on the telescopic boom (8). The fly boom (1) is installed on the telescopic boom (8) through a conversion device. The fly boom (1) can be converted between a storage state and a working state through the conversion device. When the fly boom (1) is in the storage state, it is fixed to the fixed end of the telescopic boom (8). When in the working state, the fly boom (1) is fixed to the telescopic end of the telescopic boom (8). The working platform (3) is detachably connected to the fly boom (1) through the quick-change device (2). The cross-arm auxiliary tooling (4) is installed on the working platform (3). The cross-arm auxiliary tooling (4) includes a linear movement mechanism and a slide rail (413). The linear movement mechanism is installed on the working platform (3) in the vertical direction. The movable end of the linear movement mechanism is arranged outside the working platform (3) and moves in the vertical direction. Two horizontally arranged slide rails (413) are installed on the movable end of the linear movement mechanism. The two slide rails (413) are arranged in parallel. The distance between the two slide rails (413) is greater than the outer diameter of the electric pole (10). A sliding member for supporting the cross-arm (101) is slidably installed on each slide rail (413).

2. The multi-functional vehicle for overhead line construction of a distribution network according to claim 1, wherein: The sliding member includes two limit blocks (412). The distance between the two limit blocks (412) matches the distance between the two cross beams on the cross-arm (5). The top of the limit block (412) extends out of the slide rail (413) in the vertical direction to form a clamping end for connecting with the cross-arm (5). A clamping groove (415) is provided on the clamping end of the limit block (412). The width of the clamping groove (415) matches the thickness of the wing plate at the bottom of the cross beam of the cross-arm (5).

3. The multi-functional vehicle for overhead line construction of a distribution network according to claim 1, characterized in that: The linear moving mechanism includes an upper slider group (41), a connecting rod (42), a guide rail (43), a lower slider group (44), a connecting link (410) and a worm gear lift (47). An installation area (36) is formed by a hollow area for installing a cross arm auxiliary tooling (4) on the front railing of the working platform (3). Two guide rails (43) are fixed vertically on both sides of the installation area (36) of the working platform (3). The worm gear lift (47) is installed at the bottom of the installation area (36). The upper slider group (41) and the lower slider group (44) are slidably installed on the guide rail (43). The upper slider group (41) is arranged above the lower slider group (44). A connecting rod (42) and a stop rod (45) are arranged between the two guide rails (43). The two upper slider groups (41) are connected by the connecting rod (42) to achieve linkage. The two lower slider groups (44) are connected by the stop rod (45) to achieve linkage. The worm gear lift (47) is provided with two movable ends with opposite movement directions. The two movable ends of the worm gear lift (47) are respectively fixedly connected to the connecting rod (42) and the stop rod (45). Two cross arm seats (414) are respectively hinged on the two upper slider groups (41). The distance between the two cross arm seats (414) is greater than the outer diameter of the electric pole (6). A slide rail (413) is fixed on the cross arm seat (414). One end of the connecting link (410) is hinged on the lower slider group (44), and the other end is hinged below the cross arm seat (414).

4. The multi-functional vehicle for overhead line construction of a distribution network according to claim 1, wherein: The linear moving mechanism includes an upper slider group (41), a connecting rod (42), guide rails (43), a lower slider group (44), a connecting link (410), and a worm gear lift (47). An installation area (36) is formed by a hollow area for installing a cross arm auxiliary tooling (4) on the front railing of the working platform (3). Two guide rails (43) are fixed vertically on both sides of the installation area (36) of the working platform (3). The worm gear lift (47) is installed at the bottom of the installation area (36). The upper slider group (41) and the lower slider group (44) are slidably installed on the guide rails (43). The upper slider group (41) is arranged above the lower slider group (44). A connecting rod (42) and a stop rod (45) are arranged between the two guide rails (43). The two upper slider groups (41) are connected by the connecting rod (42) to achieve linkage. The two lower slider groups (44) are connected by the stop rod (45) to achieve linkage. Two cross arm seats (414) are respectively hinged on the two upper slider groups (41). The distance between the two cross arm seats (414) is greater than the outer diameter of the electric pole (6). A slide rail (413) is fixed on the cross arm seat (414). One end of the connecting link (410) is hinged on the lower slider group (44), and the other end is hinged below the cross arm seat (414). The worm gear lift (47) includes a worm gear transmission mechanism and a lead screw. The lead screw is arranged vertically between the two guide rails (43). The worm gear transmission mechanism is fixed at the bottom of the installation area (36). The lead screw is driven to rotate by the worm gear transmission mechanism. The worm gear transmission mechanism is driven by a motor or by a rotary handle. Two movable ends are formed by a first nut and a second nut threadedly connected on the lead screw. The second nut is fixed on the connecting rod (42). The first nut is detachably connected to the stop rod (45). A plurality of second limit holes (37) are arranged on both sides of the installation area (36) along the length direction of the guide rails (43). The lower slider group (44) is provided with second pin holes matching the limit holes. The lower slider group (44) realizes the locking of the position of the lower slider group (44) on the guide rails (43) through a indexing pin (48) inserted into the second limit holes (37) and the second pin holes.

5. The multi-functional vehicle for overhead line construction of a distribution network according to claim 4, wherein: The first nut is provided with a first pin hole. The stop rod (45) is provided with a first limit hole matching the first nut. The first nut realizes the linkage with the stop rod (45) through a pin (46) inserted into the first pin hole and the first limit hole.

6. The multi-functional vehicle for overhead line construction of a distribution network according to claim 1, wherein: The telescopic arm (8) includes a basic arm and a plurality of arm sections slidably sleeved on the basic arm. The conversion device (5) includes connecting lugs (51) installed on both sides of the outermost arm section (87) and a support locking frame (52) installed on the basic arm near one end of the arm section for supporting the flying arm (1). The flying arm (1) is detachably connected to the outermost arm section (87) through a connecting bracket (11), so that the flying arm (1) has a working state and a storage state. In the working state, both sides of the connecting bracket (11) are detachably hinged to the connecting lugs (51) on both sides of the outermost boom section (87). In the storage state, first disassemble the connecting lug (51) on one side from the connecting bracket (11). The connecting bracket (11) rotates around the hinge point on the other side, and the fly boom (1) rotates and folds to a state close to and parallel to the basic boom. At this time, the fly boom (1) is placed above the support locking frame (52). The fly boom (1) is supported by the support locking frame (52), and the fly boom (1) is fixed on the support locking frame (52). Then, disassemble the connecting lug (51) on the other side from the connecting bracket (11). The fly boom (1) is completely separated from the outermost boom section (87), and the fly boom (1) is fixed on the basic boom of the telescopic boom (8).

7. The multi-functional vehicle for overhead line construction of a distribution network according to claim 6, characterized in that: The connecting lug (51) is a double lug. The connecting bracket (11) includes a fly boom connecting frame (112) and a telescopic boom connecting plate (111) connected integrally with the fly boom connecting frame (112). The fly boom (1) is hinged to the fly boom connecting frame (112). Two telescopic boom connecting plates (111) form a group, and two groups of telescopic boom connecting plates (111) are symmetrically fixed on both sides of the fly boom connecting frame (112). One end of the telescopic boom connecting plate (111) extends out of the fly boom connecting frame (112) to form a single ear plate for connecting with the connecting lug (51). And two single ear plates on the same group of telescopic boom connecting plates (111) form a group. One group of single ear plates respectively matches the positions of the two lugs on the connecting lug (51). The distance between the two groups of single ear plates matches the distance between the connecting lugs (51) on both sides of the outermost boom section (87). When the fly boom (1) is in the working state, the two groups of single ear plates on the connecting bracket (11) are respectively hinged to the two lugs on the connecting lugs (51) on both sides of the outermost boom section (87) through the locking shafts (113), so that the fly boom (1) is connected to the telescopic boom (8), and the telescopic boom (8) realizes the telescoping of the fly boom (1). When the fly boom (1) is in the storage state, remove the locking shaft (113) of one group of single ear plates and the connecting lug (51), so that the connecting bracket (11) can rotate around the locking shaft (113) on the other group of single ear plates, and push the fly boom (1) to rotate around the locking shaft (113) on this side until it is parallel to the basic boom, so that the fly boom (1) is placed above the support locking frame (52). The fly boom (1) is supported by the support locking frame (52). On the connection side of the fly boom (1) and the support locking frame (52), fixing bolt holes are correspondingly arranged. The relative positions of the fly boom (1) and the support locking frame (52) are fixed by bolts installed in the fixing bolt holes. Then, remove the locking shaft (113) of the other group of single ear plates and the connecting lug (51), so that the fly boom (1) is fixed on the basic boom, and the fly boom (1) is completely separated from the outermost boom section (87).

8. The multi-functional vehicle for overhead line construction of a distribution network according to claim 1, wherein: The crane system includes a pulley block (81), a hook (82), a wire rope (84), and a hydraulic winch (86). The hook (82) is installed on the movable pulley of the pulley block (81), and the fixed pulley of the pulley block (81) is installed on the outermost boom section (87). The hydraulic winch (86) is installed at one end of the basic boom away from the hook (82). The wire rope (84) connects the hydraulic winch (86) and the pulley block (81). The hydraulic winch (86) realizes the lifting and lowering of the hook (82) through the forward and reverse rotation of the wire rope (84).

9. The multi-functional vehicle for overhead line construction of a distribution network according to claim 1, wherein: The crawler chassis (6) includes hydraulic outriggers (61) and the lower chassis assembly (68). Four hydraulic outriggers (61) are symmetrically installed on the front and rear sides of the lower chassis assembly (68). The lower chassis assembly (68) includes crawler tracks (681), a frame (682), a drive wheel (683), a plurality of track wheels (684), swing arm suspensions (685), idler wheels (686), a tensioning cylinder (687), a tensioning wheel (688), and a buffer (689). On both outer sides of the frame (682), near the middle positions, two groups of swing arm suspensions (685) are symmetrically hinged respectively. The two groups of swing arm suspensions (685) on the same side are at the same horizontal height and are symmetrically arranged with the center of the frame length as the axis of symmetry. An idler wheel (686) is also installed on the frame (682) between the two groups of swing arm suspensions (685) on the same side. Two track wheels (684) are symmetrically installed on each group of swing arm suspensions (685). The drive wheel (683) and the tensioning wheel (688) are respectively installed at the front and rear ends on both outer sides of the frame (682). The rotating shaft of the tensioning wheel (688) is installed on a swing arm. One end of the swing arm is hinged to the frame (682), and the other end is hinged to the piston rod end of the tensioning cylinder (687). The cylinder barrel end of the tensioning cylinder (687) is fixed to the frame (682). The tensioning of the crawler track (681) is realized by the swing of the swing arm of the tensioning wheel (688) through the telescopic movement of the tensioning cylinder (687). The crawler track (681) is installed on the drive wheel (683), the track wheels (684), the idler wheels (686), and the tensioning wheel (688) on the same side. The crawler track (681) is driven to rotate by the drive wheel (683). The drive wheel (683) is driven by a hydraulic system (63). The tensioning cylinder (687) is connected to the hydraulic system (63) through the buffer (689). The hydraulic system (63) is powered by a power system (66).

10. The multi-functional vehicle for overhead line construction of a distribution network according to claim 9, characterized in that: The middle part of the swing arm suspension (685) is hinged to the frame (682) through a rotating shaft (6851). Two track wheels (684) are symmetrically installed on the swing arm suspension (685) with the rotating shaft (6851) as the center. The two track wheels (684) and the rotating shaft (6851) form a tripod structure. The track wheels (684) realize swinging around the rotating shaft (6851) through the swing arm suspension (685).

11. The multi-functional vehicle for overhead line construction of a distribution network according to claim 9, characterized in that: Above the frame (682), a sub-frame (65) is fixed. A second inclination sensor (62) and a leg hinge seat (651) are installed on the sub-frame (65). A leg hinge seat (651) is provided at each of the four corners of the sub-frame (65). The hydraulic leg (61) includes a swivel base (611), a travel switch (612), a leg (614), a leg cylinder (615), a support seat (617), and a pressure sensor (618). One end of the leg (614) is hinged to the lower end of the swivel base (611) through a horizontally arranged tenth shaft (613). The other end of the leg (614) is hinged to the support seat (617) through a horizontally arranged eleventh shaft (616). One end of the leg cylinder (615) is hinged to the upper end of the swivel base (611), and the other end is rotatably installed on the eleventh shaft (616). The leg (614) is hinged to the leg hinge seat (651) of the sub-frame (65) through the swivel base (611). A travel switch (612) for detecting the limit angle of rotation of the leg (614) in the support state is also installed on the swivel base (611). A pressure sensor (618) for detecting the pressure in the leg cylinder (615) is also installed on the leg cylinder (615). The second inclination sensor (62), the pressure sensor (618), and the travel switch (612) are all connected to the control system.

12. The multi-functional vehicle for overhead line construction of a distribution network according to claim 9, wherein: A slewing mechanism (7) is also installed on the sub-frame (65). The slewing mechanism (7) includes a turntable (71), a slewing bearing (74), and a luffing cylinder boom (75). The fixed end of the slewing bearing (74) is fixed on the sub-frame (65), and a turntable (71) is installed on the movable end of the slewing bearing (74). The fixed end of the telescopic boom (8) is hinged to the turntable (71). One end of the luffing cylinder boom (75) is hinged to the turntable (71), and the other end is hinged to the middle of the telescopic boom (8).

13. The multi-functional vehicle for overhead line construction of a distribution network according to claim 9, wherein: A hydraulic system (63), a power system (66), and an electric control system (67) are also installed on the sub-frame (65). A hood (64) for protecting the power system (66) is installed outside the power system (66).

14. The multi-functional vehicle for overhead line construction of a distribution network according to any one of claims 1 to 13, characterized in that: The working platform (3) includes an operation box (31), casters (32), a first inclination sensor (33), a working bucket (34), and a radar (35). A controller is provided in the operation box (31) for controlling the movement of the fly arm and the swing of the working bucket. The casters (32) are installed at the bottom of the working bucket (34) to support and move the working bucket (34) on the road surface. Railings are provided around the working bucket (34). One side of the working bucket (34) is an installation area (36) connected to the cross-arm auxiliary tooling (4), and the other side is a connection area connected to the quick-change device (2). The first inclination sensor (33) is installed on the working bucket (34) to detect the inclination value of the working platform (3). A plurality of radars (35) for platform obstacle avoidance are installed around the working bucket (34). Both the radar (35) and the first inclination sensor (33) are connected to the controller, and the controller receives the feedback signals of the radar (35) and the first inclination sensor (33) to control the fly arm to achieve automatic leveling of the working platform (3).

15. The multi-functional vehicle for overhead line construction of a distribution network according to claim 14, wherein: The quick-change device (2) includes a quick-change frame (21), a swing cylinder (22), and a quick-change fixing frame (23). The fixed end of the swing cylinder (22) is installed on the quick-change frame (21), and the movable end (28) is fixedly connected to the quick-change fixing frame (23). The swing cylinder (22) drives the quick-change fixing frame (23) to swing horizontally. A vertically arranged mounting post is provided on the connection area of the working platform (3), and the quick-change fixing frame (23) is installed on the mounting post of the working platform (3). The quick-change frame (21) includes two parallelly arranged support plates (212), and a horizontally arranged force transmission shaft (211) for connecting to the fly arm is fixed between the two support plates (212) at the top. The fly arm is connected to the force transmission shaft (211) through a connecting device (19).

16. The multi-functional vehicle for overhead line construction of a distribution network according to claim 15, characterized in that: A weighing device is further installed between the quick-change device (2) and the working platform (3). The weighing device includes a top rod (26), a force sensor (27), and a quick-change connecting rod (25). Two quick-change connecting rods (25) are respectively hinged on both sides of the quick-change fixing frame (23). Both sides of the quick-change fixing frame (23) are respectively hinged to both sides of the mounting post of the working platform (3) through two quick-change connecting rods (25). A spacing is provided between the quick-change fixing frame (23) and the mounting post of the working platform (3). The quick-change fixing frame (23), the two quick-change connecting rods (25), and the mounting post of the working platform (3) form a parallelogram mechanism. A force sensor (27) is fixed on one side of the quick-change fixing frame (23). A horizontally arranged top plate (29) is correspondingly fixed on the mounting post of the working platform (3) directly above the force sensor (27). A vertically arranged top rod (26) is provided on the detection end of the force sensor (27). In the working state, the top of the top rod (26) abuts against the bottom of the top plate (29).

17. The multi-functional vehicle for overhead line construction of a distribution network according to claim 15, wherein: The connecting device (19) includes a connecting frame (191), a guide shaft (192), a stop pin (193), and a safety pin (194). One end of the connecting frame (191) is provided with two parallelly arranged first connecting plates (195) for connecting with the flying arm. The other end of the connecting frame (191) is provided with two parallelly arranged second connecting plates (196) for connecting with the quick-change frame (21). The top of the second connecting plate (196) is provided with a hook matching the size of the force-transmitting shaft (211). A horizontally arranged guide shaft (192) is also fixed on the outer side of the second connecting plate (196). A guide groove (213) is provided at the corresponding position of the support plate (212) for the guide shaft (192). Through holes with matching positions are also provided on the second connecting plate (196) and the support plate (212) to form a safety pin hole. In the connected state, the hook at the top of the second connecting plate (196) is clamped on the force-transmitting shaft (211), and the second connecting plate (196) rotates with the force-transmitting shaft (211) as the rotation axis, so that the two second connecting plates (196) are inserted between the two support plates (212). After the guide shaft (192) on the second connecting plate (196) slides in place in the guide groove (213) of the support plate (212), the safety pin holes on the second connecting plate (196) and the support plate (212) are communicated. The safety pin (194) is inserted into the safety pin holes of the second connecting plate (196) and the support plate (212), so that the relative positions of the second connecting plate (196) and the support plate (212) are fixed.

18. The multi-functional vehicle for overhead line construction of a distribution network according to claim 17, characterized in that: An L-shaped plate (197) is fixed on the outer side of the second connecting plate (196), and the guide shaft (192) is fixed between the L-shaped plate (197) and the second connecting plate (196).

19. The multi-functional vehicle for overhead line construction of a distribution network according to claim 17, wherein: The flying arm (1) includes a connecting bracket (11), a leveling oil cylinder (14), a luffing arm (15), a flying arm luffing oil cylinder (16), a linkage mechanism (18), and a connecting device (19). The connecting bracket (11) is used for connecting with the telescopic end of the telescopic arm. The upper end of the connecting bracket (11) is hinged with the luffing arm (15), and the lower end is hinged with the flying arm luffing oil cylinder (16). The other end of the flying arm luffing oil cylinder (16) is hinged with the other end of the luffing arm (15). The luffing of the luffing arm (15) is realized by the telescoping of the flying arm luffing oil cylinder (16). The link mechanism (18) includes an inner link (181) and an outer link (183). One ends of the inner link (181) and the outer link (183) are hinged through a seventh shaft (182). The other end of the inner link (181) is hinged to the luffing arm (15). The other end of the outer link (183) is hinged to the middle of the first connecting plate of the connecting device (19) connecting frame (191). The end of the first connecting plate is hinged to the luffing arm (15). One end of the leveling oil cylinder (14) is hinged to the luffing arm (15), and the other end is rotatably connected to the seventh shaft (182) of the link mechanism (18). The expansion and contraction of the leveling oil cylinder (14) drives the inner link (181) of the link mechanism (18) to move. The inner link (181) drives the connecting device (19) to rotate around its hinge axis with the luffing arm (15) through the outer link (183), realizing the up and down swing of the connecting device (19).

20. The multi-functional vehicle for overhead line construction of a distribution network according to claim 1, wherein: The wire stringing device (9) includes a hydraulic double-drum winch (92), a tail rope frame (93) and a wire-pulling block (94). The hydraulic double-drum winch (92) and the tail rope frame (93) are both fixed on the crawler chassis. The wire-pulling block (94) is installed on the cross arm at the top of the electric pole. A pin shaft force sensor (943) is installed on the wire-pulling block (94), and a wire-reeling wheel (942) is installed on the pin shaft force sensor (943). The pin shaft force sensor (943) is used to measure the wire load between adjacent electric poles. The hydraulic double-drum winch (92) includes a double-drum (927) driven by a winch hydraulic motor (923), a winch pressure sensor (922) for monitoring the pressure of the winch hydraulic motor (923), and a winch speed sensor (925) for monitoring the rotation speed of the double-drum (927). The double-drum (927) is used to provide traction for the wire. The tail rope frame (93) includes a wire reel (931) driven by a tail rope hydraulic motor (937). The wire reel (931) is used to wind or release the wire. The hydraulic double-drum winch (92) is controlled by a winch hydraulic valve group (921), and the tail rope hydraulic motor (937) is controlled by a tail rope hydraulic valve group (935). The winch hydraulic valve group (921), the tail rope hydraulic valve group (935), the pin shaft force sensor (943), the winch pressure sensor (922) and the winch speed sensor (925) are all connected to the control system. The control system controls the wire winding or releasing speed of the wire reel (931) to match the rotation speed of the double-drum (927). The control system monitors the values of the pin shaft force sensor (943) and the winch pressure sensor (922). When the pin shaft force sensor (943) and the winch pressure sensor (922) exceed the preset values, an alarm is issued.

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