Cross arm auxiliary high-altitude operation construction vehicle

Abstract

A crossarm-assisted aerial work platform includes a tracked chassis, a slewing mechanism, a telescopic boom, a boom, a quick-change device, a work platform, and crossarm auxiliary fixtures. The slewing mechanism is mounted on the tracked chassis. The fixed end of the telescopic boom is mounted on the slewing mechanism, and the boom is mounted on the telescopic end of the telescopic boom. The work platform is detachably connected to the boom via the quick-change device. The crossarm auxiliary fixtures are mounted on the work platform and include a linear motion mechanism and slide rails. The movable end of the linear motion mechanism is located outside the work platform and moves vertically. Two horizontally arranged slide rails are mounted on the movable end of the linear motion mechanism. The two slide rails are parallel to each other, and the distance between the two slide rails is greater than the outer diameter of the pole. Each slide rail has a sliding component for supporting the crossarm. This invention reduces the workload of workers and improves the stability of crossarm installation, minimizing the occurrence of accidents.

Description

Technical Field

[0001] This invention relates to the field of aerial work platform construction vehicle technology, and in particular to a crossbeam-assisted aerial work platform construction vehicle. Background Technology

[0002] A crossarm is installed on the upper part of a pole or tower to support overhead lines. It is an important component of the pole or tower. Its function is to install insulators and fittings to support conductors and lightning protection wires and to maintain a certain safe distance between them as required.

[0003] Currently, the main methods for installing crossarms on poles are manual climbing or using cranes or aerial work platforms as lifting mechanisms to raise the crossarms to the installation height. However, manual climbing is labor-intensive and dangerous. Cranes and existing aerial work platforms are not specifically designed for crossarm installation. On the one hand, aerial work platforms require additional lifting equipment to lift the crossarms, resulting in low efficiency and high cost. On the other hand, existing power poles are generally used in rural or remote locations. In southern regions, these areas are often mountainous and hilly, with muddy, soft soil, steep slopes, and field ridges. Existing conventional spider-type aerial work platforms have low travel speeds and poor maneuverability, making it very difficult for them to reach these areas, and in many places, they are inaccessible. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a crossarm-assisted high-altitude construction vehicle that facilitates crossarm installation and reduces worker workload and risks.

[0005] To achieve the above objectives, this invention first proposes a crossarm-assisted aerial work platform, comprising a tracked chassis, a slewing mechanism, a telescopic boom, a boom, a quick-change device, a work platform, and a crossarm auxiliary fixture. The tracked chassis is equipped with a slewing mechanism, the fixed end of the telescopic boom is mounted on the slewing mechanism, the boom is mounted on the telescopic end of the telescopic boom, and the work platform is detachably connected to the boom via the quick-change device. The crossarm auxiliary fixture is mounted on the work platform and includes a linear motion mechanism and slide rails. The linear motion mechanism is mounted vertically on the work platform, and its movable end is located on the outside of the work platform and moves vertically. Two horizontally arranged slide rails are mounted on the movable end of the linear motion mechanism, and the two slide rails are arranged parallel to each other. The distance between the two slide rails is greater than the outer diameter of the pole. Each slide rail has a sliding component for supporting the crossarm slidably mounted on it.

[0006] With the above structure, the vehicle of this invention is equipped with a tracked chassis, which greatly improves the vehicle's obstacle-crossing performance and ensures its passability in mountainous and hilly terrain such as muddy fields, soft soil, steep slopes, and field ridges. The work platform can be quickly installed on or separated from the boom via a quick-change device. This allows for selection based on the actual construction situation: either connect the work platform to the vehicle first and then drive to the construction area, or do not connect the work platform initially, thus improving the vehicle's obstacle-crossing performance. After reaching the construction area, the telescopic boom and boom are used to connect to the work platform, improving the overall controllability and efficiency of the construction process. During construction, the telescopic boom is used to lift the work platform, allowing it to... Reaching heights; the boom can maintain the level of the work platform during lifting and operation, while the crossarm auxiliary fixtures on the work platform can be used to attach the crossarm to the pole. Throughout the entire crossarm installation process, construction workers only need to stand inside the work platform to operate, greatly improving construction safety. During crossarm installation, the crossarm can be placed flat on the sliding parts of the slide rail, and then, using the cooperation of the linear movement mechanism and the slide rail, the crossarm is sequentially lifted over the top of the pole, pushed towards the pole, and lowered to the pole installation position. These actions are all completed mechanically, without the need for manual lifting, reducing the labor intensity of workers, while also improving the stability of the crossarm installation and minimizing the occurrence of accidents.

[0007] In the above embodiment, the sliding member includes two limiting blocks, the distance between the two limiting blocks is matched with the distance between the two crossbeams on the crossarm, the top of the limiting block extends vertically out of the slide rail to form a snap-fit ​​end for connecting with the crossarm, and the snap-fit ​​end of the limiting block is provided with a snap-fit ​​groove, the width of the snap-fit ​​groove is matched with the thickness of the flange at the bottom of the crossarm beam.

[0008] Since the crossbeams of the crossarm are generally made of L-shaped steel or I-beams, when the crossarm is placed on the limiting blocks, the flanges at the bottom of the two crossbeams of the crossarm are respectively locked into the slots of the four limiting blocks, thus stably supporting the crossarm horizontally on the slide rail. In this way, the crossarm can move vertically through the linear movement mechanism, realizing the crossarm being lowered from the top of the pole to the pole installation position. The crossarm can also move horizontally along the slide rail through the limiting blocks, which facilitates the adjustment of the distance between the crossarm and the pole, further facilitating the installation of the crossarm.

[0009] As a first embodiment of the linear motion mechanism, the linear motion mechanism includes an upper slider assembly, a connecting frame, a guide rail, a lower slider assembly, a connecting rod, and a worm gear jack. The front rail of the work platform has a hollowed-out area for installing auxiliary crossarm fixtures, forming an installation area. Two guide rails are fixed vertically on both sides of the installation area of ​​the work platform. The worm gear jack is installed at the bottom of the installation area. The upper slider assembly and the lower slider assembly are slidably mounted on the guide rails, with the upper slider assembly positioned above the lower slider assembly. A connecting frame and a stop rod are provided between the two guide rails. The two upper slider assemblies are linked together via the connecting frame, and the two lower slider assemblies are linked together via the stop rod. The worm gear jack has two movable ends with opposite directions of movement. The two movable ends of the worm gear jack are fixedly connected to the connecting frame and the stop rod, respectively. Two crossarm seats are hinged to the two upper slider assemblies, with the distance between the two crossarm seats being greater than the outer diameter of the pole. The slide rail is fixed to the crossarm seats. One end of the connecting rod is hinged to the lower slider assembly, and the other end is hinged below the crossarm seat.

[0010] Using the above structure, the operation of the worm gear jack enables the upper and lower slider groups to move closer and further apart synchronously, thus realizing the transition between the extended and retracted states of the crossbeam support. In the extended state, the two connecting frames are far apart with the maximum distance, and the crossbeam support is horizontally arranged. In the retracted state, the two connecting frames are close together with the minimum distance, and the crossbeam support is vertically arranged. In this way, when the boom lifts the work 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 then extended, further improving the reliability of construction.

[0011] As a second embodiment of the linear motion mechanism, the linear motion mechanism includes an upper slider assembly, a connecting frame, guide rails, a lower slider assembly, a connecting rod, and a worm gear jack. The front rail of the work platform has a hollowed-out area for installing auxiliary crossarm fixtures, forming an installation area. Two guide rails are fixed vertically on both sides of the installation area of ​​the work platform. The worm gear jack is installed at the bottom of the installation area. The upper slider assembly and the lower slider assembly are slidably mounted on the guide rails, with the upper slider assembly positioned above the lower slider assembly. A connecting frame and a stop rod are provided between the two guide rails. The two upper slider assemblies are linked together via the connecting frame, and the two lower slider assemblies are linked together via the stop rod. Two crossarm seats are hinged to each of the two upper slider assemblies, with the distance between the two crossarm seats greater than the outer diameter of the pole. The slide rail is fixed to the crossarm seats. One end of the connecting rod... The worm gear lift includes a worm gear transmission mechanism and a lead screw, with one end hinged to the lower slide block assembly and the other end hinged to the bottom of the crossbeam seat. The lead screw is arranged vertically between two guide rails. The worm gear transmission mechanism is fixed at the bottom of the installation area. The lead screw is driven to rotate by the worm gear transmission mechanism, which is driven by a motor or by a rotating handle. The lead screw is threaded with a first nut and a second nut to form two movable ends. The second nut is fixed on the connecting frame. The first nut and the stop rod are detachably connected. Multiple second limiting holes are arranged on both sides of the installation area along the length of the guide rail. The lower slide block assembly is provided with second pin holes that match the limiting holes. The lower slide block assembly is locked on the guide rail by an indexing pin inserted into the second limiting holes and the second pin holes.

[0012] In the above embodiments, the first nut is provided with a first pin hole, and the stop rod is provided with a first limiting hole that matches the first nut. The first nut achieves linkage with the stop rod by inserting a pin into the first pin hole and the first limiting hole.

[0013] With the above structure, when the overall height of the slide rail needs to be moved, the limiting indexing pin is pulled out, and the first nut is connected and fixed to the stop rod through the pin. At this time, the worm gear transmission mechanism is driven, and the connecting frame and the stop rod move upward or downward. Compared with the previous implementation method, this makes the overall height of the slide rail adjustable, which further improves the range of height adjustment of the crossbeam during installation and improves the adaptability and accuracy of installation.

[0014] Meanwhile, this implementation method can also be used to unfold or retract the slide rail. Simply fix the lower slide block assembly to both sides of the installation area with the limiting indexing pin, and pull out the pin between the first nut and the stop rod. Driven by the worm gear lift, only the connecting frame moves up or down, while the stop rod does not move, thus enabling the slide rail to unfold or retract.

[0015] In this embodiment, the tracked chassis includes hydraulic outriggers and a chassis underbody. Four hydraulic outriggers are symmetrically mounted on the front and rear sides of the chassis underbody. The chassis underbody includes tracks, a frame, drive wheels, multiple track rollers, rocker arm suspensions, carrier rollers, tension cylinders, tensioning wheels, and shock absorbers. Two sets of rocker arm suspensions are symmetrically hinged to the outer sides of the frame, near the center. The two sets of rocker arm suspensions on the same side are at the same horizontal height and symmetrically arranged about the center of the frame length. Carrier rollers are also installed on the frame between the two sets of rocker arm suspensions on the same side. Each set of rocker arm suspensions is equipped with... Two track rollers are provided. Drive wheels and tensioning wheels are symmetrically mounted at the front and rear ends of the two outer sides of the frame. The axle of the tensioning wheel is hinged to the frame via a swing arm. The cylinder end of the tensioning cylinder is fixed to the frame, and the piston rod end is hinged to the swing arm of the tensioning wheel. The tensioning wheel swing arm is swung by the extension and retraction of the tensioning cylinder to tension the track. Tracks are mounted on the drive wheel, track roller, carrier roller, and tensioning wheel on the same side. The track is driven to rotate by the drive wheel, which is driven by a hydraulic system. The tensioning cylinder is connected to the hydraulic system via a buffer, and the hydraulic system is powered by a power system.

[0016] In this embodiment, the middle part of the rocker arm suspension is hinged to the vehicle frame through a rotating shaft. The rocker arm suspension is symmetrically mounted with two track wheels around the rotating shaft. The two track wheels and the rotating shaft form a triangular frame structure. The track wheels swing around the rotating shaft through the rocker arm suspension.

[0017] With the above structure, the middle part of the rocker arm suspension is hinged to the two outer sides of the chassis via a rotating shaft. Two track wheels are symmetrically mounted on the rocker arm suspension around the rotating shaft, forming a triangular structure with the rotating shaft. The track wheels swing around the rotating shaft via the rocker arm suspension. Firstly, because the track wheels mounted on the rocker arm suspension are located on the outer sides of the chassis, the resulting track is also located on the outer side of the chassis. This allows the chassis not to restrict the size of the track wheels. By assembling large-diameter track wheels and using the rocker arm suspension, it can adapt to complex road conditions such as uneven terrain, increasing passability. Secondly, the chassis, placed inside the track, serves as a load-bearing chassis and is connected to the subframe, which is used to install the equipment. This facilitates subsequent disassembly and maintenance. Furthermore, by equipping the machine with hydraulic outriggers, once the machine reaches the construction position, the entire chassis can be raised by deploying the hydraulic outriggers, keeping the vehicle level and improving its stability during construction.

[0018] The buffer is used to store the impact energy received by the tensioning cylinder, thus buffering the impact and increasing the service life of the chassis. The tracks are driven to rotate by drive wheels, which are driven by a hydraulic system, which is powered by a power system.

[0019] Once the machine reaches the construction location, it is positioned, and the hydraulic outriggers are deployed to support the entire tracked chassis, maintaining the vehicle's level and thus improving its stability during construction.

[0020] In this embodiment, a subframe is fixed above the vehicle frame. A second tilt sensor and a support leg hinge seat are installed on the subframe. A support leg hinge seat is provided at each of the four corners of the subframe. The hydraulic support leg includes a rotating base, a limit switch, a support leg, a support leg cylinder, a support base, and a pressure sensor. The rotating base is rotatably connected to the subframe via a pin mounted vertically on the subframe. One end of the support leg is hinged to the lower end of the rotating base via a horizontally arranged tenth axis, and the other end of the support leg is hinged to the support base via an eleventh axis. One end of the support leg cylinder is hinged to the upper end of the rotating base, and the other end is rotatably mounted on the eleventh axis. The support leg is hinged to the support leg hinge seat on the subframe via the rotating base. A limit switch is also installed on the rotating base to detect when the support leg rotates to its limit angle in the supported state. A pressure sensor is also installed on the support leg cylinder to detect the pressure inside the support leg cylinder. The second tilt sensor, the pressure sensor, and the limit switch are all connected to the control system.

[0021] When in use, the construction personnel first push the hydraulic outriggers, which rotate along the horizontal plane to the working position on the outrigger hinge seat. Then, the horizontal position of the hydraulic outriggers is locked, and the outrigger cylinders are activated to drive the outriggers and support seats to flip downwards. The four hydraulic outriggers are controlled by the hydraulic system and the automatic leveling system. The control system controls the extension and retraction of each outrigger cylinder to level the subframe based on the tilt angle signal fed back by the second tilt angle sensor and the feedback signal from the pressure sensor of the outrigger cylinder. At this time, the pressure sensor of each outrigger feeds back the differential pressure signal, and at the same time, the chassis is lifted off the ground. Specifically, when the outrigger flips downwards with the outrigger cylinder until it collides with the limit switch, this is the maximum height that the chassis can be lifted in the leveling state. The second tilt sensor is a dual-axis type, which can detect the tilt angle of the vehicle body in the X and Y axes. Based on the feedback value, it adjusts the extension and retraction of the corresponding outrigger cylinder, driving the hydraulic outrigger on that side of the vehicle body to rise until the vehicle body is in a level state. During this process, if the pressure sensor of each outrigger returns a normal signal, the leveling of the entire vehicle is completed. If an outrigger returns an abnormal differential pressure signal during the leveling process, it means that the outrigger is not on the ground or the ground on which the outrigger is located has settled. The leveling fails when the outrigger cylinder reaches its maximum stroke, and the ground on which the outrigger is located needs to be leveled and compacted manually.

[0022] After the machine is leveled, the telescopic boom is raised and rotated to the required position. Then, the telescopic boom is adjusted to a negative angle and extended / retracted. At the same time, the boom is operated to adjust the boom until the working platform touches the ground and then stops. The crossarm is then placed on the crossarm auxiliary fixture, and the installation hardware is placed on the working platform. Once everything is ready, the telescopic boom is raised and the boom is adjusted to ensure that the crossarm auxiliary fixture is in the working position. Then, the machine is locked and the work of raising the crossarm onto the pole begins.

[0023] In this embodiment, a slewing mechanism is also installed on the subframe. The slewing mechanism includes a turntable, a slewing bearing, and a boom of a luffing cylinder. The fixed end of the slewing bearing is fixed to the subframe, and the turntable is installed on the movable end of the slewing bearing. The fixed end of the telescopic boom is hinged to the turntable, and one end of the boom of the luffing cylinder is hinged to the turntable, while the other end is hinged to the middle of the telescopic boom.

[0024] In this embodiment, a hydraulic system, a power system, and an electronic control system are also installed on the subframe, and a protective cover is installed outside the power system.

[0025] In the above embodiment, the working platform includes an operation box, casters, a first tilt sensor, a working bucket, and radar. The operation box contains a controller for controlling the movement of the boom. The casters are installed at the bottom of the working bucket for supporting and moving the working bucket on the ground. The working bucket is surrounded by railings. One side of the working bucket is an installation area connected to the crossarm auxiliary tooling, and the other side is a connection area connected to the quick-change device. The first tilt sensor is installed on the working bucket to detect the tilt angle of the working platform. Multiple radars for obstacle avoidance are installed around the working bucket. Both the radars and the first tilt sensor are connected to the controller. The controller receives feedback signals from the radars and the first tilt sensor to control the boom to achieve automatic leveling of the working platform.

[0026] With the above structure, the control box on the work platform can serve as a control center, allowing construction workers to control the lowering or raising of the boom from the work platform. At the same time, by utilizing the radar and first tilt sensor on the work platform and using existing technology, automatic leveling of the work platform can be achieved. Furthermore, radar monitoring and alarms can reduce the likelihood of the work platform colliding with other equipment during the lifting and lowering process.

[0027] In the above embodiments, the quick-change device includes a quick-change frame, a swing cylinder, a quick-change fixed frame, a fourth shaft, a quick-change connecting rod, 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 fixed frame. The swing cylinder drives the quick-change fixed frame to swing horizontally. A vertically arranged mounting column is provided on the connection area of ​​the working platform. The quick-change fixed frame is installed on the mounting column of the working platform. The quick-change frame includes two parallel support plates. A horizontally arranged force transmission shaft for connecting with the flying arm is fixed between the two support plates and at its top. The flying arm is connected to the force transmission shaft through a connecting device.

[0028] With the above structure, the swing cylinder in the quick-change device can realize the horizontal swing of the work platform, which increases the dimensions of the work platform's movement, makes it more adaptable to the environment, and allows for more obstacle avoidance angles.

[0029] 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 a quick-change connecting rod. Two quick-change connecting rods are respectively hinged to both sides of the quick-change fixing frame via a fourth axis. The two sides of the quick-change fixing frame are respectively hinged to both sides of the mounting column of the working platform via 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 to one side of the quick-change fixing frame. A horizontally arranged top plate is 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. In the working state, the top of the top rod abuts against the bottom of the top plate.

[0030] With the above structure, in the initial state, the work platform is placed on the ground, and the quick-change fixing frame moves downward relative to the mounting column around the quick-change connecting rod under its own weight. The top rod does not contact the top plate and no weighing is required. In the working state, the quick-change device is raised, and the quick-change fixing frame moves upward relative to the mounting column. At this time, the top rod contacts the top plate, and weighing begins. Using a parallelogram mechanism, the load on the work platform and its load is always a vertical force applied to the top rod through the top plate, which is the true load of the work platform, achieving accurate weighing of the platform. The force sensor is connected to the controller, which controls the movement of the boom. The weighing device calculates the total weight of the work platform to ensure that the total load is within a limited range. When overload occurs, lifting stops to prevent accidents caused by overload.

[0031] In the above embodiment, the connecting device includes a connecting frame, a guide shaft, a stop pin, and a safety pin. One end of the connecting frame has two parallel first connecting plates for connecting with the flying arm, and the other end of the connecting frame has two parallel second connecting plates for connecting with the quick-change frame. The top of the second connecting plate has a hook that matches the size of the force transmission shaft. A horizontally arranged guide shaft is also fixed on the outer side of the second connecting plate. The support plate has a guide groove at the corresponding position of the guide shaft. The second connecting plate and the support plate also have matching safety pin holes. In the connected state, the hook on the top of the second connecting plate is engaged with 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 guide shaft on the second connecting plate enters the guide groove of the support plate, and the safety pin holes on the second connecting plate and the support plate are connected. The safety pin is inserted into the safety pin holes of the second connecting plate and the support plate, so that the relative positions of the second connecting plate and the support plate are fixed.

[0032] The connecting device is a piece of equipment used in conjunction with the quick-change device to achieve rapid connection. The connection and disassembly of the connecting device and the quick-change device can be completed by installing and removing the safety pin, thus realizing the rapid connection and disassembly of the flying arm and the work platform.

[0033] In the above embodiment, an L-shaped plate is fixed on the outer side of the second connecting plate, and the guide shaft is fixed between the L-shaped plate and the second connecting plate. The L-shaped plate and the second connecting plate are respectively provided with shaft holes that match the size of the guide shaft. The two ends of the guide shaft pass through the shaft holes and are limited by stop pins.

[0034] In the above embodiments, the boom includes a connecting bracket, a leveling cylinder, a luffing boom, a boom luffing cylinder, a linkage mechanism, and a connecting device.

[0035] The connecting bracket is used to connect to the telescopic end of the boom. The upper end of the connecting bracket is hinged to the luffing arm, and the lower end is hinged to a boom luffing cylinder. The other end of the boom luffing cylinder is hinged to the other end of the luffing arm. The luffing arm achieves luffing motion through the extension and retraction of the boom luffing cylinder.

[0036] The linkage mechanism includes an inner link and an outer link. One end of the inner link and the outer link are hinged to the seventh axis. The other end of the inner link is hinged to the luffing arm. The other end of the outer link is hinged to the middle of the first connecting plate of the connecting device frame. The end of the first connecting plate is hinged to the luffing arm. One end of the leveling cylinder is hinged to the luffing arm, and the other end is rotatably connected to the seventh axis of the linkage mechanism. The extension and retraction of the leveling 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, thereby realizing the up and down swing of the connecting device.

[0037] With the above structure, the boom can control the up-and-down swing of the connecting device. When the work platform is placed on the ground, the up-and-down swing of the connecting device can achieve quick docking with the quick-change device. On the other hand, the extension and retraction of the boom luffing cylinder on the boom can also realize the luffing motion of the boom, further improving the control accuracy of the work platform.

[0038] With the above structure, this device has the following advantages:

[0039] (1) The vehicle of this invention is equipped with a tracked chassis, which greatly improves the obstacle-crossing performance of the vehicle and ensures its passability in mountainous and hilly terrains such as mud, soft soil, steep slopes, and field ridges. The working platform can be quickly installed on the boom or quickly separated from the boom via a quick-change device. This allows for selection based on the actual construction situation: either connect the working platform to the vehicle first and then drive to the construction area, or do not connect the working platform first. This will improve the obstacle-crossing performance of the vehicle. After reaching the construction area, the telescopic boom and boom are used to connect to the working platform, thus improving the controllability of the entire construction and increasing construction efficiency. During the construction process, the telescopic boom is used to lift the working platform, enabling the working platform to reach... At height, the boom can maintain the level of the work platform during lifting and operation. The crossarm auxiliary fixture on the work platform can be used to attach the crossarm to the pole. During the entire crossarm installation process, the construction workers only need to stand inside the work platform to operate, which greatly improves the safety of construction. During the crossarm installation process, the crossarm can be placed flat on the sliding parts of the slide rail. Then, using the cooperation of the linear movement mechanism and the slide rail, the crossarm is lifted over the top of the pole, pushed towards the pole, and lowered to the pole installation position in sequence. These actions are all completed mechanically, without the need for manual lifting, which reduces the labor intensity of workers and improves the stability of the crossarm installation, minimizing the occurrence of accidents.

[0040] (2) The control box on the work platform can serve as a control center. Construction personnel can control the boom to descend or rise on the work platform. At the same time, by using the radar and first tilt sensor on the work platform and existing technology, the work platform can be automatically leveled. The radar monitoring and alarm can also reduce the collision between the work platform and other equipment during the lifting process.

[0041] (3) The swing cylinder in the quick-change device can realize the horizontal swing of the work platform, which increases the dimension of the work platform's movement, makes it more adaptable to the environment, and allows for more obstacle avoidance angles.

[0042] (4) The connecting device is a device used in conjunction with the quick-change device to achieve quick connection. The quick connection and disassembly of the connecting device and the quick-change device can be completed by installing and removing the safety pin, so as to achieve quick connection and disassembly of the flying arm and the work platform.

[0043] (5) The boom can control the up and down swing of the connecting device. When the work platform is placed on the ground, the up and down swing of the connecting device can realize the quick docking with the quick change device. On the other hand, the extension and retraction of the boom luffing cylinder on the boom can realize the luffing motion of the boom, which further improves the control accuracy of the work platform. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the structure of the present invention.

[0045] Figure 2 This is a schematic diagram of the tracked chassis of the present invention.

[0046] Figure 3 This is a schematic diagram of the internal structure of the chassis under the present invention.

[0047] Figure 4 This is a schematic diagram of the subframe structure of the present invention.

[0048] Figure 5 This is a schematic diagram of the rocker arm suspension structure of the present invention.

[0049] Figure 6 This is a schematic diagram of the structure of the buffer of the present invention.

[0050] Figure 7 This is a schematic diagram of the hydraulic outrigger of the present invention.

[0051] Figure 8 This is a perspective view of the hydraulic outrigger of the present invention.

[0052] Figure 9 This is a schematic diagram of the telescopic arm of the present invention.

[0053] Figure 10 This is a schematic diagram of the structure of the flying arm of the present invention.

[0054] Figure 11 This is a structural schematic diagram of the connection state between the flying arm and the working platform of the present invention.

[0055] Figure 12 This is a schematic diagram of the linkage mechanism of the present invention.

[0056] Figure 13 This is a schematic diagram of the connecting device of the present invention.

[0057] Figure 14 This is a schematic diagram of the quick-change device of the present invention.

[0058] Figure 15 This is a diagram showing the state of the connecting device and quick-change device of the present invention when they are ready to be connected.

[0059] Figure 16 This is an exploded view of the connection frame and quick-change frame of the present invention.

[0060] Figure 17 This is a schematic diagram of the working platform of the present invention.

[0061] Figure 18 This is a schematic diagram of the auxiliary tooling for the crossarm of the present invention.

[0062] Figure 19 This is a schematic diagram of the worm gear jack of the present invention.

[0063] Figure 20 This is a diagram showing the state of the auxiliary tooling for the crossarm of the present invention in its stowed and unfolded states.

[0064] Figure 21 This is a schematic diagram of the working platform of the present invention in its working state.

[0065] Figure 22 This is a schematic diagram illustrating the adjustment of the invention from the initial state to the working state.

[0066] In the attached diagram: 1. Flying boom; 11. Connecting bracket; 12. First shaft; 13. Second shaft; 14. Leveling cylinder; 15. Luffing boom; 16. Flying boom luffing cylinder; 17. Third shaft; 18. Linkage mechanism; 181. Inner connecting rod; 182. Seventh shaft; 183. Outer connecting rod; 184. Eighth shaft; 185. Ninth shaft; 19. Connecting device; 191. Connecting frame; 192. Guide shaft; 193. Stop pin; 194. Safety pin; 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. 23. Swing cylinder; 24. Quick-change fixing bracket; 25. Fourth shaft; 26. Quick-change connecting rod; 27. Push rod; 28. Force sensor; 29. ​​Connecting shaft; 30. Top plate; 31. Working platform; 32. Operation box; 33. Casters; 34. First tilt sensor; 35. Working bucket; 36. Radar; 37. Installation area; 48. Second limit hole; 49. Crossbeam auxiliary fixture; 40. Upper slider assembly; 41. Connecting rod; 42. Guide rail; 43. Lower slider assembly; 44. Stop rod; 45. Pin; 46. Worm gear jack; 47. Worm gear transmission mechanism; 47. First nut; 47. Lead screw; 47. Second nut; 48. Indexing rod 49. Pin; 410. Fifth Axle; 411. Connecting Rod; 412. Sixth Axle; 413. Limit Block; 414. Slide Rail; 415. Crossarm Seat; 6. Tracked Chassis; 61. Hydraulic Outrigger; 611. Rotary Seat; 612. Limit Switch; 613. Tenth Axle; 614. Outrigger; 615. Outrigger Cylinder; 616. Eleventh Axle; 617. Support Seat; 618. Pressure Sensor; 62. Second Tilt Sensor; 63. Hydraulic System; 64. Engine Cover; 65. Subframe; 651. Outrigger Hinge Seat; 6511. Outrigger Limit Shaft; 6512. Outrigger Rotary Shaft; 6513. Sensing Element; 652. Engine Connector; 653. Cargo box; 66. Power system; 67. Electronic control system; 68. Undercarriage; 681. Tracks; 682. Chassis; 683. Drive wheel; 684. Track roller; 685. Rocker arm suspension; 6851. Rocker arm swivel shaft; 686. Carrier roller; 687. Tensioning cylinder; 688. Tensioning wheel; 689. Buffer; 6891. Accumulator; 6892. Throttle valve; 6893. Valve block; 6894. Connector; 6895. Pressure gauge; 7. Slewing mechanism; 71. Turntable; 72. Twelfth axle; 73. Thirteenth axle; 74. Slewing bearing; 75. Luffing cylinder boom; 8. Telescopic boom; 9. Crossarm; 10. Pole. Detailed Implementation

[0067] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0068] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0069] like Figures 1 to 22 As shown: A crossarm-assisted aerial work vehicle includes a tracked chassis 6, a slewing mechanism 7, a telescopic boom 8, a boom 1, a quick-change device 2, a work platform 3, and a crossarm auxiliary tooling 4.

[0070] like Figure 1 As shown, a slewing mechanism 7 is installed on the tracked chassis 6, the fixed end of the telescopic boom 8 is hinged to the slewing mechanism 7, the flying boom 1 is installed on the telescopic end of the telescopic boom 8, the crossbeam auxiliary tooling 4 is installed on the working platform 3, and the working platform 3 is detachably connected to the flying boom 1 through a 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.

[0071] like Figures 2 to 9 As shown, the tracked chassis 6 includes hydraulic outriggers 61 and a chassis underbody 68. The chassis underbody 68 includes tracks 681, a frame 682, drive wheels 683, multiple track rollers 684, a rocker arm suspension 685, a carrier roller 686, a tension cylinder 687, a tensioning wheel 688, and a buffer 689. A subframe 65 is fixed above the frame 682. A slewing mechanism 7, a hydraulic system 63, a power system 66, and an electronic control system 67 are installed on the subframe 65. A protective cover 64 is installed outside the power system 66. The tracks 681 are rubber tracks.

[0072] Two sets of rocker arm suspensions 685 are symmetrically hinged to the outer sides of the frame 682 near the center. The middle part of the rocker arm suspension 685 is hinged to the frame 682 through the rocker arm rotation shaft 6851. Two track wheels 684 are symmetrically installed on the rocker arm suspension 685 with the rocker arm rotation shaft 6851 as the center. The two track wheels 684 and the rocker arm rotation shaft 6851 form a triangular frame structure. The two track wheels 684 swing around the rocker arm rotation shaft 6851 through the rocker arm suspension 685. The two sets of rocker arm suspensions 685 on the same side of the frame 682 are at the same horizontal height and are symmetrically arranged with the center of the frame length as the axis of symmetry. A support roller 686 is also installed on the frame 682 between the two sets of rocker arm suspensions 685 on the same side.

[0073] Drive wheels 683 and tension wheels 688 are respectively installed at the front and rear ends of the two outer sides of the frame 682. The tension wheels 688 are connected to the frame 682 through tension cylinders 687. Specifically, the shaft of the tension wheels 688 is hinged to the frame 682 through a swing arm. The cylinder end of the tension cylinder 687 is fixed to the frame 682, and the piston rod end is hinged to the swing arm of the tension wheels 688. The tension wheels 688 swing by extending and retracting the tension cylinder 687 to tension the track 681. Tracks 681 are installed on the drive wheels 683, track wheels 684, carrier rollers 686, and tension wheels 688 on the same side of the frame 682. The track 681 is driven to rotate by the drive wheels 683. The drive wheels 683 are driven by a hydraulic system 63. The tension cylinder 687 is connected to the hydraulic system 63 through a buffer 689. The hydraulic system 63 is powered by a power system 66.

[0074] like Figure 6 As shown, the buffer 689 includes a valve block 6893, on which an accumulator 6891, a throttle valve 6892, a connector 6893, and a pressure gauge 6895 are connected. A tensioning cylinder 687 is connected to the connector 6893 via a hydraulic hose. The throttle valve 6892 is connected to the hydraulic system 63 via a hydraulic hose. When the track needs tensioning, the throttle valve 6892 opens, and the hydraulic oil in the hydraulic system 63 pushes the tensioning cylinder 687 to tension the track. When the track encounters an obstacle during travel, the impact energy generated is converted into compression energy by the retraction of the tensioning cylinder 687, which, in the form of hydraulic oil recirculation, compresses the accumulator 689, reducing the impact on the vehicle body.

[0075] like Figure 8As shown, the subframe 65 includes outrigger hinge seats 651, engine connectors 652, and a cargo box 653. The outrigger hinge seats are used to install hydraulic outriggers, and the cargo box is used to store and transport goods such as crossarms and hardware. The power system 66 is mounted on the subframe 65 via the engine connectors 652. Each of the four corners of the subframe 65 has an outrigger hinge seat 651 with a hinge hole. Two limiting holes are provided on the outrigger hinge seat 651, centered on the hinge hole. Outrigger shafts 6512 are inserted into the hinge holes. The outrigger pivot 6512 is used to hinge the hydraulic outrigger 61 so that it can rotate within the outrigger hinge seat 651. The outrigger limit shaft 6511 is inserted into the limit hole. The outrigger limit shaft 6511 is used to limit the angle of rotation of the hydraulic outrigger 61 in the horizontal plane. The outrigger hinge seat 651 also has a sensing element 6513 in the two limit holes to detect whether the outrigger limit shaft 6511 is inserted. The sensing element 6513 is connected to the control system to determine whether the hydraulic outrigger 61 has extended or retracted, so as to prevent the hydraulic outrigger 61 from extending or retracting unexpectedly when it is not in operation.

[0076] A second tilt sensor 62 is mounted on the subframe 65. The hydraulic outrigger 61 includes a pivot 611, a limit 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 pivot 611 via a horizontally arranged tenth shaft 613, and the other end of the outrigger 614 is hinged to the support base 617 via a horizontally arranged eleventh shaft 616. One end of the outrigger cylinder 615 is hinged to the upper end of the pivot 611, and the other end is rotatably mounted on the eleventh shaft 616. The pivot 611 is equipped with... The outrigger has a shaft hole that matches the outrigger pivot 6512 and a pin hole that matches the outrigger limiting pivot 6511. The pivot 611 is installed in the outrigger hinge seat 651. The outrigger pivot 6512 is vertically inserted into the hinge hole and the shaft hole to achieve the hinge between the pivot 611 and the outrigger hinge seat 651. When the hydraulic outrigger 61 rotates around the outrigger pivot 6512, the outrigger limiting pivot 6511 inserted into the limiting hole and the pin hole locks the position of the hydraulic outrigger 61 in the working position and the non-working position, ensuring the stability of the hydraulic outrigger 61 in the working and non-working states.

[0077] The rotary seat 611 is also equipped with a limit switch 612 for detecting the rotation limit angle of the outrigger 614 in the working state, and the outrigger cylinder 615 is also equipped with a pressure sensor 618 for detecting the pressure inside the outrigger cylinder 615. The second tilt sensor 62, the pressure sensor 618 and the limit switch 612 are all connected to the control system.

[0078] like Figure 9As shown, the slewing mechanism 7 includes a turntable 71, a slewing bearing 74, and a boom 75. The fixed end of the slewing bearing 74 is fixed on the subframe 65, and the turntable 71 is mounted on the movable end of the slewing bearing 74. The fixed end of the telescopic boom 8 is hinged to the turntable 71 via the twelfth shaft 72. One end of the boom 75 is hinged to the turntable 71 via the thirteenth shaft 73, and the other end is hinged to the middle of the telescopic boom 8.

[0079] like Figure 18 As shown, the crossarm auxiliary fixture 4 includes a linear motion mechanism, a limiting block 412, a slide rail 413, and a crossarm seat 414. The linear motion mechanism is vertically mounted on the work platform 3. Its movable end is located on the outside of the work platform 3 and moves vertically. Two crossarm seats 414 are mounted on the movable end of the linear motion mechanism. The distance between the two crossarm seats 414 is greater than the outer diameter of the pole. A horizontally arranged slide rail 413 is mounted on each crossarm seat 414. The two slide rails 413 are arranged parallel to each other, and the distance between the two slide rails 413 is greater than the outer diameter of the pole.

[0080] Two limiting blocks 412 are slidably installed on each slide rail 413. The distance between the two limiting blocks 412 matches the distance between the two crossbeams on the crossarm. The top of the limiting block 412 extends vertically out of the slide rail 413 to form a snap-fit ​​end for connection with the crossarm. The snap-fit ​​end of the limiting block 412 is provided with a slot 415. The width of the slot 415 matches the thickness of the flange at the bottom of the crossarm beam. Since the crossarm beams are generally made of L-shaped steel or I-beams... After the crossarm is placed on the limiting block 412, the flanges at the bottom of the two crossbeams of the crossarm are respectively engaged in the slots of the four limiting blocks 412, thereby horizontally supporting the crossarm on the slide rail 413. In this way, the crossarm can move vertically through the linear movement mechanism, so that the crossarm can be lowered from the top of the pole to the pole installation position. The crossarm can also move horizontally along the slide rail 413 through the limiting blocks 412, which facilitates the adjustment of the distance between the crossarm and the pole and further facilitates the installation of the crossarm.

[0081] Specifically, in this embodiment, the linear motion mechanism includes an upper slider assembly 41, a connecting rod 42, a guide rail 43, a lower slider assembly 44, a connecting rod 410, and a worm gear lift 47.

[0082] The front rail of the work platform 3 has a hollow area for installing the crossbeam auxiliary tool 4, forming an installation area. Two guide rails 43 are fixed vertically on both sides of the installation area of ​​the work platform 3. The 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 installed on the guide rails 43. The upper slider group 41 is located above the lower slider group 44. A connecting rod 42 and a stop rod 45 are provided 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.

[0083] As one embodiment of the worm gear jack 47 of this device, the worm gear jack 47 is provided with two movable ends with opposite directions of movement. The two movable ends of the worm gear jack 47 are respectively connected to the connecting rod 42 and the stop rod 45. The crossbeam 414 is hinged to the upper slider group 41 through the sixth shaft 411. One end of the connecting rod 410 is hinged to the lower slider group 44 through the fifth shaft 49, and the other end is hinged to the bottom of the crossbeam 414. With the above structure, the operation of the worm gear jack 47 realizes the synchronous approach and distance between the upper slider group 41 and the lower slider group 44, thereby realizing the conversion between the crossbeam 414 in the unfolded state and the retracted state. In the unfolded state, the two connecting rods 42 are far apart and the distance is the largest. At this time, the crossbeam 414 is arranged horizontally. In the retracted state, the two connecting rods 42 are close together and the distance is the smallest. The crossbeam 414 is arranged vertically.

[0084] In the above embodiment, the worm gear jack 47 further includes a worm gear transmission mechanism and a lead screw 473. The lead screw 473 is arranged vertically between two guide rails 43. The worm gear transmission mechanism is fixed at the bottom of the installation area. The lead screw 473 is driven to rotate by the worm gear transmission mechanism, which is driven by a motor or by a rotating handle. The lead screw 473 has 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. Multiple second limiting holes are arranged on both sides of the installation area along the length of the guide rail 43. The lower slide block assembly 44 is provided with a second pin hole that matches the second limiting holes. The lower slide block assembly 44 is locked on the guide rail by an indexing pin 48 inserted into the second limiting hole and the second pin hole.

[0085] As another embodiment of the worm gear jack 47 of this device, the worm gear jack 47 is provided with two movable ends. The worm gear jack 47 includes a worm gear transmission mechanism and a lead screw 473. The lead screw 473 is arranged vertically between two guide rails 43. The worm gear transmission mechanism is fixed at the bottom of the installation area. The lead screw 473 is driven to rotate by the worm gear transmission mechanism, which is driven by a motor or by a rotating handle. A first nut 472 and a second nut 474 are threaded onto the lead screw 473 to form two movable ends. The second nut 474 is fixed to the connecting rod 42. A nut 472 and a stop rod 45 are detachably connected. Specifically, the first nut 472 has a first pin hole, and the stop rod 45 has a first limiting hole that matches the first nut 472. The first nut 472 is linked to the stop rod 45 by a pin 46 inserted into the first pin hole and the first limiting hole. Multiple second limiting holes are arranged on both sides of the mounting area along the length of the guide rail 43. The sliding block assembly 44 has a second pin hole that matches the limiting hole. The sliding block assembly 44 is locked on the guide rail by an indexing pin 48 inserted into the second limiting hole and the second pin hole.

[0086] When in use, when it is necessary to move the height of the slide rail 413 as a whole, pull out the limit indexing pin 48 and connect and fix the first nut 472 to the stop rod 45 through the pin 46. At this time, drive the worm gear transmission mechanism, and the connecting rod 42 and the stop rod 45 move up or down together to realize the overall up and down adjustment of the slide rail 413, further improving the accuracy of the crossarm installation.

[0087] When the slide rail 413 needs to be unfolded or retracted, the lower slide block assembly 44 is fixed to both sides of the installation area by the limiting indexing pin 48, the pin 46 between the first nut 472 and the stop rod 45 is pulled out, and under the drive of the worm gear lift 47, the connecting rod 42 moves up or down, while the stop rod 45 does not move, thereby realizing the unfolding or retraction of the slide rail 413.

[0088] like Figure 17As shown, the work platform 3 includes an operation box 31, casters 32, a first tilt sensor 33, a work bucket 34, and radar 35. The operation box 31 is equipped with a controller that can control the movement of the boom 1. The casters 32 are installed at the bottom of the work bucket 34 to support and move the work bucket 34 on the road. The work bucket 34 is surrounded by railings. One side of the work bucket 34 is an installation area connected to the crossbeam auxiliary tool 4, and the other side is a connection area connected to the quick-change device 2. The first tilt sensor 33 is installed on the work bucket 34 to detect the tilt angle value of the work platform and provide data for leveling the work platform. Multiple radars 35 for obstacle avoidance of the platform are installed around the work bucket 34. Both the radars 35 and the first tilt sensor 33 are connected to the controller.

[0089] like Figures 14 to 16 As shown, the quick-change device 2 includes a quick-change frame 21, a swing cylinder 22, a quick-change fixed 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 mounted on the quick-change frame 21, and the movable end is fixedly connected to the quick-change fixed frame 23 through the connecting shaft 28. The swing cylinder 22 drives the quick-change fixed 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 fixed frame 23 is mounted on the mounting column of the working platform 3.

[0090] like Figure 14As 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 boom 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 limit range and to prevent accidents caused by overload. The weighing device includes a top rod 26, a force sensor 27, and quick-change connecting rods 25. Two quick-change connecting rods 25 are respectively hinged to both sides of the quick-change fixing frame 23 through the fourth shaft 24. The two sides of the quick-change fixing frame 23 are respectively hinged to the two sides of the mounting column of the working platform 3 through the 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, so that the quick-change fixing frame 23 can be parallel to the mounting column of the working platform 3. The quick-change mounting bracket 23 is moved up and down a certain distance. A force sensor 27 is fixed on one side of the quick-change mounting bracket 23. A horizontally arranged top plate 29 is fixed on the mounting column 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 initial state, the quick-change mounting bracket 23 moves downward relative to the mounting column around the quick-change connecting rod 25 under its own weight. The top rod 26 does not contact the top plate 29. In the working state, the quick-change device 2 is raised, and the quick-change mounting bracket 23 moves upward relative to the mounting column. At this time, the top rod 26 contacts the top plate 29, and weighing begins. The force sensor 27 is connected to the controller, which controls the movement of the boom. Using a parallelogram mechanism, the load on the working platform 3 and its load is always applied to the top rod 26 through the top plate 29 as a vertical force, which is the true load of the working platform 3, thus achieving accurate weighing of the platform.

[0091] Furthermore, the top of the push rod 26 has a semi-circular head on the side that contacts the top plate 29, and the bottom of the push rod 26 is provided with an external thread. The push rod 26 is threaded into the threaded hole on the detection end of the force sensor 27. The height of the push rod 26 can be adjusted through the threaded engagement.

[0092] The quick-change frame 21 includes two parallel support plates 212. A horizontally arranged force transmission shaft 211 for connecting to the flying arm 1 is fixed between the two support plates 212 and at their top. The flying arm 1 is connected to the quick-change frame 21 via a connecting device 19.

[0093] like Figures 11 to 16As shown, 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 has two parallel first connecting plates 195 for connecting to the flying arm, and the other end has two parallel second connecting plates 196 for connecting to the quick-change frame 21. The top of the second connecting plate 196 has a hook matching the size of the force transmission shaft. A horizontally arranged guide shaft 192 is also fixed to the outer side of the second connecting plate 196. The support plate 212 has a guide groove 213 at the corresponding position of the guide shaft 192. The second connecting plate 196 and the support plate 212 also have matching safety pin holes. (Connection state) During operation, the hook on the top of the second connecting plate 196 of the connecting device 19 first engages with the force transmission shaft 211. Then, the second connecting plate 196 rotates around the force transmission shaft 211, causing the two second connecting plates 196 to be inserted between the two support plates 212 of the quick-change frame 21. At this time, the guide shaft 192 on the second connecting plate 196 enters the guide groove 213 of the support plate. By moving the guide shaft 192 along the guide groove 213, the positions of the second connecting plate 196 and the support plate 212 are adjusted, so that the safety pin holes on the second connecting plate 196 and the support plate are connected. Then, the safety pin 194 is inserted from the safety pin holes on the second connecting plate 196 and the support plate to fix the relative positions of the second connecting plate 196 and the support plate. In this way, the quick connection and disassembly of the connecting device 19 and the quick-change device 2 can be completed by installing and removing the safety pin 194, realizing the quick connection and disassembly of the flying arm and the work platform.

[0094] In this embodiment, 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. Specifically, the L-shaped plate 197 and the second connecting plate 196 are respectively provided with shaft holes that match the size of the guide shaft 192. The two ends of the guide shaft 192 pass through the shaft holes and are limited by the stop pins 193 to prevent the guide shaft 192 from disengaging from the shaft holes.

[0095] like Figure 10 As shown, the boom 1 includes a connecting bracket 11, a leveling cylinder 14, a luffing boom 15, a boom luffing cylinder 16, a linkage mechanism 18, and a connecting device 19.

[0096] One side of the connecting bracket is connected to the telescopic end of the telescopic arm, and the upper end of the other side is hinged to one end of the luffing arm 15 via the first shaft 12, and the lower end is hinged to one end of the boom luffing cylinder 16. The other end of the boom luffing cylinder 16 is hinged to the other end of the luffing arm 15 via the third shaft 17. The luffing arm 15 achieves luffing motion by telescopically extending and retracting the boom luffing cylinder 16.

[0097] Linkage mechanism 18 includes an inner link 181 and an outer link 183. One end of the inner link 181 and the outer link 183 are hinged to a seventh shaft 182. The other end of the inner link 181 is hinged to the luffing arm 15 via a ninth shaft 185. The other end of the outer link 183 is hinged to the middle of the first connecting plate 195 of the connecting frame 191 of the connecting device 19 via an eighth shaft 184. The end of the first connecting plate 195 is hinged to the luffing arm 15. One end of the leveling cylinder 14 is connected to... The second shaft 13 is hinged to the luffing arm 15, and its other end is rotatably connected to the seventh shaft 182 of the linkage mechanism 18. The extension and retraction of the leveling cylinder 14 can move the inner connecting rod 181 of the linkage mechanism 18. The inner connecting rod 181 then drives the outer connecting rod 183, which in turn drives the connecting device 19 to rotate around its hinge axis with the luffing arm 15, thus achieving the up-and-down swing of the connecting device 19. The up-and-down swing of the connecting device 19 then achieves automatic docking with the quick-change device 2. After the quick-change device 2, the working platform 3, and the flying arm 1 are connected as a whole, the working platform is leveled by the action of the leveling cylinder 14, combined with the feedback signal from the first tilt sensor 33. The system automatically controls the extension and retraction of the leveling cylinder 14 to achieve the same leveling effect.

[0098] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A crossbeam-assisted aerial work platform, characterized in that: The system includes a tracked chassis (6), a slewing mechanism (7), a telescopic boom (8), a boom (1), a quick-change device (2), a work platform (3), and a crossbeam auxiliary fixture (4). The tracked chassis (6) is equipped with the slewing mechanism (7). The fixed end of the telescopic boom (8) is hinged to the slewing mechanism (7). The boom (1) is mounted on the telescopic end of the telescopic boom (8). The work platform (3) is detachably connected to the boom (1) via the quick-change device (2). The crossbeam auxiliary fixture (4) is mounted on the work platform (3). The device (4) includes a linear moving mechanism and a slide rail (413). The linear moving mechanism is installed vertically on the working platform (3). The movable end of the linear moving mechanism is located on the outside of the working platform (3) and moves vertically. Two horizontally arranged slide rails (413) are installed on the movable end of the linear moving mechanism. The two slide rails (413) are arranged parallel to each other. The distance between the two slide rails (413) is greater than the outer diameter of the pole (10). Each slide rail (413) has a sliding component for supporting the crossarm (9) slidably installed on it.

2. The crossbeam-assisted aerial work platform according to claim 1, characterized in that: The sliding component includes two limiting blocks (412), the distance between the two limiting blocks (412) matches the distance between the two crossbeams on the crossarm (9), the top of the limiting block (412) extends vertically out of the slide rail (413) to form a snap-fit ​​end for connecting with the crossarm (9), and the snap-fit ​​end of the limiting block (412) is provided with a snap-fit ​​groove (415), the width of the snap-fit ​​groove (415) matches the thickness of the flange at the bottom of the crossbeam of the crossarm (9).

3. The crossbeam-assisted aerial work platform according to claim 1, characterized in that: The linear motion mechanism includes an upper slider assembly (41), a connecting rod (42), a guide rail (43), a lower slider assembly (44), a connecting rod (410), and a worm gear jack (47). A hollow area for installing the crossbeam auxiliary fixture (4) is provided on the front rail of the work platform (3), forming an installation area (36). Two guide rails (43) are fixed vertically on both sides of the installation area (36) of the work platform (3). The worm gear jack (47) is installed at the bottom of the installation area (36). The upper slider assembly (41) and the lower slider assembly (44) are slidably mounted on the guide rails (43). The upper slider assembly (41) is positioned above the lower slider assembly (44). A connecting rod (42) is provided between the two guide rails (43). The stop rod (45) and 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 jack (47) is provided with two movable ends with opposite directions of movement. The two movable ends of the worm gear jack (47) are fixedly connected to the connecting rod (42) and the stop rod (45) respectively. Two crossbeam seats (414) are hinged on the two upper slider groups (41). The distance between the two crossbeam seats (414) is greater than the outer diameter of the pole (6). The slide rail (413) is fixed on the crossbeam seat (414). One end of the connecting rod (410) is hinged on the lower slider group (44) and the other end is hinged below the crossbeam seat (414).

4. The crossbeam-assisted aerial work platform according to claim 1, characterized in that: The linear motion mechanism includes an upper slider assembly (41), a connecting rod (42), a guide rail (43), a lower slider assembly (44), a connecting rod (410), and a worm gear jack (47). A hollow area for installing the crossbeam auxiliary fixture (4) is provided on the front rail of the work platform (3), forming an installation area (36). Two guide rails (43) are fixed vertically on both sides of the installation area (36) of the work platform (3). The worm gear jack (47) is installed at the bottom of the installation area (36), and is slidably mounted on the guide rails (43). There are upper sliding block assembly (41) and lower sliding block assembly (44). The upper sliding block assembly (41) is located above the lower sliding block assembly (44). A connecting rod (42) and a stop rod (45) are provided between the two guide rails (43). The two upper sliding block assemblies (41) are connected by the connecting rod (42) to achieve linkage. The two lower sliding block assemblies (44) are connected by the stop rod (45) to achieve linkage. Two crossarm seats (414) are hinged to the two upper sliding block assemblies (41). The distance between the two crossarm seats (414) is greater than the outer diameter of the pole (6). The slide rails (413) are connected by the stop rod (45). The connecting rod (410) is fixed on the crossbeam seat (414). One end of the connecting rod (410) is hinged to the lower slide block assembly (44), and the other end is hinged to the bottom of the crossbeam seat (414). The worm gear lift (47) includes a worm gear transmission mechanism and a lead screw. The lead screw is arranged vertically between 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 rotating handle. The lead screw is screwed on the worm gear. The connection is formed by a first nut and a second nut to form two movable ends. The second nut is fixed on the connecting rod (42). The first nut and the stop rod (45) are detachably connected. Multiple second limiting holes (37) are arranged on both sides of the mounting area (36) along the length of the guide rail (43). The sliding block assembly (44) is provided with a second pin hole that matches the limiting hole. The sliding block assembly (44) is locked on the guide rail (43) by an indexing pin (48) inserted into the second limiting hole (37) and the second pin hole.

5. The crossbeam-assisted aerial work platform according to claim 4, characterized in that: The first nut is provided with a first pin hole, and the stop rod (45) is provided with a first limiting hole that matches the first nut. The first nut is linked with the stop rod (45) by inserting a pin (46) into the first pin hole and the first limiting hole.

6. The crossbeam-assisted aerial work platform according to claim 1, characterized in that: The tracked chassis (6) includes hydraulic outriggers (61) and a chassis underbody (68). Four hydraulic outriggers (61) are symmetrically mounted on the front and rear sides of the chassis underbody (68). The chassis underbody (68) includes tracks (681), a frame (682), drive wheels (683), multiple track rollers (684), a rocker arm suspension (685), a carrier roller (686), a tension cylinder (687), a tensioning wheel (688), and a buffer (689). Two sets of rocker arm suspensions (685) are symmetrically hinged on the outer sides and near the center of the frame (682). The two sets of rocker 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. A support roller (686) is also installed on the frame (682) between the two sets of rocker arm suspensions (685) on the same side. Two track wheels (684) are symmetrically installed on each set of rocker arm suspensions (685). The front and rear ends of the two outer sides are respectively equipped with drive wheels (683) and tension wheels (688). The shaft of the tension wheel (688) is mounted on the 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 tension cylinder (687). The cylinder end of the tension cylinder (687) is fixed to the frame (682). By extending and retracting the tension cylinder (687), the swing arm of the tension wheel (688) swings to tension the track (681). Tracks (681) are mounted on the drive wheel (683), track wheel (684), carrier wheel (686), and tension wheel (688) on the same side. The tracks (681) are driven to rotate by the drive wheel (683). The drive wheel (683) is driven by the hydraulic system (63). The tension cylinder (687) is connected to the hydraulic system (63) through the buffer (689). The hydraulic system (63) is powered by the power system (66).

7. The crossbeam-assisted aerial work platform according to claim 6, characterized in that: The middle part of the rocker arm suspension (685) is hinged to the frame (682) through a rotating shaft (6851). The rocker arm suspension (685) has two track wheels (684) symmetrically installed around the rotating shaft (6851). The two track wheels (684) and the rotating shaft (6851) form a triangular frame structure. The track wheels (684) swing around the rotating shaft (6851) through the rocker arm suspension (685).

8. The crossbeam-assisted aerial work platform according to claim 6, characterized in that: A subframe (65) is fixed above the frame (682). A second tilt sensor (62) and a support leg hinge seat (651) are installed on the subframe (65). A support leg hinge seat (651) is provided at each of the four corners of the subframe (65). The hydraulic outrigger (61) includes a rotary seat (611), a limit 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 rotary seat (611) via a horizontally arranged tenth axis (613), and the other end of the outrigger (614) is hinged to the support base (617) via a horizontally arranged eleventh axis (616). One end of the outrigger cylinder (615) is hinged to the upper end of the rotary seat (611), and the other end is rotatably mounted on the eleventh axis (617). On the eleventh axle (616), the outrigger (614) is hinged to the outrigger hinge seat (651) of the subframe (65) via a swivel (611). The swivel (611) is also equipped with a limit switch (612) for detecting the outrigger (614) rotating to the limit angle in the supported state. The outrigger cylinder (615) is also equipped with a pressure sensor (618) for detecting the pressure inside the outrigger cylinder (615). The second tilt sensor (62), the pressure sensor (618) and the limit switch (612) are all connected to the control system.

9. The crossbeam-assisted aerial work platform according to claim 8, characterized in that: The subframe (65) is also equipped with a slewing mechanism (7), which includes a turntable (71), a slewing bearing (74), and a 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), and one end of the boom (75) is hinged to the turntable (71), while the other end is hinged to the middle of the telescopic boom (8).

10. The crossbeam-assisted aerial work platform according to claim 8, characterized in that: The subframe (65) is also equipped with a hydraulic system (63), a power system (66) and an electronic control system (67), and the power system (66) is protected by a hood (64).

11. The crossbeam-assisted aerial work platform according to any one of claims 1 to 10, characterized in that: The working platform (3) includes an operation box (31), casters (32), a first tilt sensor (33), a working bucket (34), and radar (35). The operation box (31) is equipped with a controller, which is used to control the movement of the boom 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. The working bucket (34) is surrounded by railings. One side of the working bucket (34) is an installation area (36) connected to the crossbeam auxiliary tool (4), and the other side is a connection area connected to the quick change device (2). The first tilt sensor (33) is installed on the working bucket (34) to detect the tilt angle of the working platform (3). Multiple radars (35) for platform obstacle avoidance are installed around the working bucket (34). The radars (35) and the first tilt sensor (33) are both connected to the controller. The controller receives the feedback signals from the radars (35) and the first tilt sensor (33) to control the boom to achieve automatic leveling of the working platform (3).

12. The crossbeam-assisted aerial work platform according to claim 11, characterized in that: The quick-change device (2) includes a quick-change frame (21), a swing cylinder (22), and a quick-change fixed 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 fixed frame (23). The swing cylinder (22) drives the quick-change fixed frame (23) to swing horizontally. A vertically installed mounting column is provided on the connection area of ​​the working platform (3). The quick-change fixed frame (23) is installed on the mounting column of the working platform (3). The quick-change frame (21) includes two parallel support plates (212). A horizontally arranged force transmission shaft (211) for connecting with the flying arm is fixed between the two support plates (212) and on its top. The flying arm is connected to the force transmission shaft (211) through a connecting device (19).

13. The crossbeam-assisted aerial work platform according to claim 12, characterized in that: A weighing device is also 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 hinged to both sides of the quick-change fixing frame (23). The two sides of the quick-change fixing frame (23) are hinged to the two sides of the mounting column of the working platform (3) through two quick-change connecting rods (25). There is a gap between the quick-change fixing frame (23) and the mounting column of the working platform (3). (23) Two quick-change connecting rods (25) and the mounting column 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 fixed on the mounting column 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).

14. The crossbeam-assisted aerial work platform according to claim 12, characterized in that: 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 parallel first connecting plates (195) for connecting with the flying arm, and the other end of the connecting frame (191) is provided with two parallel 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 that matches the size of the force transmission shaft (211). A horizontally arranged guide shaft (192) is also fixed on the outer side of the second connecting plate (196). The support plate (212) is provided with a guide groove (213) at the corresponding position of the guide shaft (192). The second connecting plate (196) and the support plate (212) are connected together. The plate (212) is also provided with matching through holes to form safety pin holes. In the connected state, the hook on the top of the second connecting plate (196) is engaged with the force transmission shaft (211). The second connecting plate (196) rotates around the force transmission 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 into 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 connected. 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.

15. The crossbeam-assisted aerial work platform according to claim 14, 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).

16. The crossbeam-assisted aerial work platform according to claim 14, characterized in that: The boom (1) includes a connecting bracket (11), a leveling cylinder (14), a luffing boom (15), a boom luffing cylinder (16), a linkage mechanism (18), and a connecting device (19). The connecting bracket (11) is used to connect to the telescopic end of the telescopic boom. The upper end of the connecting bracket (11) is hinged to the luffing boom (15), and the lower end is hinged to the boom luffing cylinder (16). The other end of the boom luffing cylinder (16) is hinged to the other end of the luffing boom (15). The luffing boom (15) achieves luffing motion through the telescopic movement of the boom luffing cylinder (16). The linkage mechanism (18) includes an inner link (181) and an outer link (183). One end 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 frame (191) of the connecting device (19). The end of the first connecting plate is hinged to the luffing arm (15). One end of the leveling cylinder (14) is hinged to the luffing arm (15), and the other end is rotatably connected to the seventh shaft (182) of the linkage mechanism (18). The extension and retraction of the leveling cylinder (14) drives the inner connecting rod (181) of the linkage mechanism (18) to move. The inner connecting rod (181) drives the connecting device (19) to rotate around its hinge axis with the luffing arm (15) through the outer connecting rod (183), thereby realizing the up and down swing of the connecting device (19).

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