CN214653419U - Crank arm type double-platform folding telescopic insulating arm capable of moving at multiple angles - Google Patents

Abstract

The utility model relates to the technical field of high-altitude operation equipment, in particular to a crank arm type double-platform folding telescopic insulating arm capable of moving in multiple angles, which comprises a frame, a bearing frame arranged on the frame, a jacket formed by connecting a stand column, a turret, a lower arm, a shaft joint, an upper arm, a telescopic arm and a working bucket in sequence, two parallel running mechanisms for moving the high-altitude operation vehicle integrally are arranged below the bearing frame, a crank arm for adjusting the position of the working bucket is arranged at the top end of the telescopic arm, the crank arm comprises a supporting device connected with the upper arm, a small crank arm for connecting the working bucket, and a rotating mechanism for connecting the supporting device and the small crank arm, the crank arm structure not only enables the working bucket and the small crank arm to rotate around a small crank arm rotating oil cylinder at the front end part of a supporting seat together, but also enables the working bucket to rotate around the working bucket rotating oil cylinder at the front end part of the small crank arm independently, the bidirectional rotation of the far end and the near end is realized.

Description

Crank arm type double-platform folding telescopic insulating arm capable of moving at multiple angles

Technical Field

The utility model relates to an aerial working equipment technical field, in particular to but multi-angle motion's folding flexible insulating arm of crank arm formula double platform.

Background

The high-altitude operation machine is high-altitude operation equipment developed on the basis of engineering hoisting machinery and is widely applied to industries such as buildings, fire fighting and the like. With the continuous development of economic construction in China, the demand on the overhead working truck is more and more, and the required working range is wider and wider.

The high-altitude operation vehicle is a special vehicle for transporting workers and using equipment to the high altitude to install, maintain and clean equipment located at the high altitude, has the advantages of good operation performance, high operation efficiency, safe operation and the like compared with the traditional operation modes of taking scaffolds, ladders and the like, and is widely applied to the infrastructure industries of electric power, traffic, petrifaction, communication, gardens and the like at present.

The high-altitude operation vehicle has various classification modes, and can be classified into two basic modes of a straight arm type and a crank arm type according to the form of an arm support, and the straight arm type high-altitude operation vehicle is a special vehicle for conveying workers and working equipment to a specified height to perform operation. In the process of lifting the arm support of the overhead working truck, a certain included angle is inevitably generated between the arm support and the horizontal plane, so that the working bucket is inclined at the same angle, and therefore, the leveling mechanism is required to be capable of adjusting the inclination angle of the working bucket in real time, so that the working bucket is in a required safety state. The crank arm type overhead working truck can carry out overhanging operation, span certain obstacles or lift at one position to carry out multi-point operation; the platform has large carrying capacity, can be used for two or more persons to work simultaneously and can carry certain equipment; the device is suitable for large-scale operation of stations, docks, markets, stadiums, residential property, factories and mining workshops and the like. It is a vehicle which is provided with a plurality of hydraulic oil cylinders and can be lifted up and down for operation under the control of a hydraulic or electric system.

Classified according to the type of the working arm, there are four basic types, respectively: vertical lifting type, folding arm type, telescopic arm type and mixing arm type. The high-altitude operation equipment is generally provided with an amplitude variation mechanism, a horizontal rotating mechanism, a balancing mechanism and a traveling mechanism, and the movement of a manned or robot working bucket in the vertical and horizontal directions is realized by the amplitude variation mechanism and the horizontal rotating mechanism; the included angle between the working bucket and the horizontal plane is kept unchanged by the balance mechanism, and the workplace is transferred by the walking mechanism. However, if the working environment is complex, for example, when the high-voltage wire transmission line is connected in high altitude, the difficulty is increased for high-altitude connection due to the irregular winding track, the thick wire diameter of the coil, the large bending force, the limited bending movement space and the like. In addition, the folding arm overhead working truck has the defects of instability, even rollover accidents in severe cases due to factors such as artificial misoperation or severe natural conditions in the working process, so that the working truck is damaged and the life safety of operators and surrounding pedestrians is threatened. Therefore, when designing the whole aerial work vehicle, it is necessary to analyze the stability of the whole aerial work vehicle. Therefore, an operation device capable of accurately positioning an operation area and having high safety is urgently needed.

When general aerial work equipment is used and aerial work is carried out, the following defects exist: 1. regardless of the fact that the existing aerial working platform is a movable aerial working platform, a spider type aerial working platform, a self-propelled aerial working platform or a scissor type aerial working platform, the working platform is difficult to adjust within a range after the supporting arm is fixed, and the requirements for multi-angle and multi-dimensional operation cannot be met. When the operation position changes, the position of the supporting arm needs to be adjusted to realize the position adjustment of the aerial work platform, so that the aim of accurately operating the designated operation area is fulfilled; even if the working position changes slightly, the position of the supporting arm needs to be adjusted to realize the effect, and the use is not flexible, so that the working quality is poor, and the working efficiency is low. 2. The existing aerial work platform reaches the designated work area in a mode of lifting, improving and moving the whole lifting arm, so that the aerial work platform is extremely inflexible to use and low in work efficiency.

The utility model discloses a 201721608938.7 discloses a petrol-electric double-power control overhead working truck, including the frame and the elevating system on the frame, the elevating system includes the base, the bottom of the base is equipped with the carousel, the inside of the carousel is equipped with hydraulic motor, be equipped with first lifing arm, second lifing arm and third lifing arm on the base in proper order, be equipped with first pneumatic cylinder between base and the first lifing arm, be equipped with the second pneumatic cylinder between first lifing arm and the second lifing arm, be equipped with the third pneumatic cylinder between second lifing arm and the third lifing arm, the end of third lifing arm is equipped with the work fill, the frame in be equipped with petrol-electric double-power unit hydraulic system, petrol-electric double-power unit hydraulic system is including installing hydraulic tank, gearbox chassis and overhead working truck that link to each other at the frame bottom; the hydraulic system has the advantages of reasonable structural design, zero oil consumption when the hydraulic system is driven by the motor, cleanness, no noise, energy conservation and environmental protection.

The invention improves an oil pump, a hydraulic system and an electric system of the overhead working truck, solves the problems of high cost consumption and machine damage of the overhead working truck during long-time working, and has no substantial improvement on the flexibility of improving the overhead working in the existing narrow space.

The invention patent 201310015363.8 discloses a working bucket leveling system and a folding arm overhead working vehicle, comprising a hydraulic subsystem, a control subsystem and a leveling mechanism arranged on a lifting arm, wherein the leveling mechanism comprises a bracket, a rocker, a connecting rod and a leveling cylinder, the cylinder end of the leveling cylinder is hinged with the lifting arm through a pin shaft, the bracket is fixedly connected on the working bucket, the bracket is hinged with the lifting arm through a pin shaft at a first hinge point (G), one end of the rocker, one end of the connecting rod and the piston rod end of the leveling cylinder are hinged at a second hinge point (D) through a pin shaft, the other end of the rocker is hinged with the lifting arm at a third hinge point (E) through a pin shaft, the other end of the connecting rod is hinged with the bracket through a pin shaft at a fourth hinge point (F), the distance between the hinge points meets the relation of DE + GE > GE + DF, the leveling mechanism drives the bracket to rotate relative to the lifting arm through the extension and retraction of the leveling cylinder, to level the bucket. The invention can solve the problem that dead points are easy to appear in the leveling of the working bucket when the amplitude variation angle is larger.

The invention improves the leveling mode of the working bucket, but the leveling structure is complicated, the technical problem that the whole lifting arm needs to be improved to realize when the working area needs to be lifted in a small range and the variable height is reduced cannot be solved, the working platform cannot be adjusted in a horizontal direction and a vertical direction, the adjusting mode is not flexible, and the requirement on the flexibility of the high-altitude operation vehicle in daily construction cannot be met.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the operation device which has a simple structure, can realize multi-angle rotation of the operation platform, realizes all-dimensional coverage operation of a working area, can realize independent lifting and adjustment of the operation platform, is flexible to use, has high operation efficiency, is safe and has good stability, and can realize high-precision positioning for the overhead working truck.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a but folding flexible insulating arm of crank arm formula double platform of multi-angle motion, includes the frame, sets up the frame that bears on the frame, is equipped with the facial make-up that connects gradually by stand, capstan head, underarm, coupling, upper arm, flexible arm, work fill in the top of bearing the frame, is provided with the running gear who is used for two parallel arrangement of bulk mobile high altitude construction car in the below of bearing the frame, the top of flexible arm is provided with the crank arm that is used for adjusting work fill position, the crank arm includes a strutting arrangement who is used for being connected with the upper arm, a little crank arm that is used for connecting work fill to and a rotary mechanism that is used for connecting strutting arrangement and little crank arm.

The supporting device comprises a T-shaped supporting seat, the lower end of the supporting seat is connected to the upper side of the front end of the telescopic arm through a pin shaft, the supporting seat further comprises a supporting seat arm, one end of the supporting seat arm is connected to the lower side of the front end of the T-shaped supporting seat, the other end of the supporting seat arm is connected to the lower side of the front end of the telescopic arm, and the supporting seat arm comprises an upper supporting seat arm, a lower supporting seat arm and a secondary leveling oil cylinder, wherein the secondary leveling oil cylinder is connected with the upper supporting seat arm and the lower supporting seat arm; one end of the small crank arm is connected above the front end of the T-shaped supporting seat through a rotating mechanism, the other end of the small crank arm is connected with the bearing frame of the working bucket through a working bucket rotating oil cylinder, the rotating mechanism is a small crank arm rotating oil cylinder, one end of the small crank arm rotating oil cylinder is connected with the supporting seat, and the other end of the small crank arm rotating oil cylinder is connected with the small crank arm.

Foretell but multi-angle motion's crank arm formula double platform folds flexible insulating arm, the stand bottom is provided with the hydraulic tank who is used for providing hydraulic oil for the hydro-cylinder of facial make-up, hydraulic tank passes through oil pipe and is connected with the hydro-cylinder, the capstan head passes through rotary mechanism and connects the top at the stand.

Foretell but flexible insulating arm is folded to crank arm formula two platforms of multi-angle motion, install the underarm lift cylinder that is used for the underarm to lift on the underarm, the facial make-up is still including being used for the underarm steadily to promote under the lift force of underarm lift cylinder through round pin axle and capstan head, the fixed connecting rod of coupling, the one end of underarm, underarm lift cylinder, pull rod is connected on the capstan head, constitutes and is used for the facial make-up to be in the four-bar linkage of horizontality at the lift in-process.

The above crank arm type double-platform folding telescopic insulating arm capable of moving at multiple angles comprises an upper arm lifting oil cylinder, wherein one end of the upper arm is connected to a shaft joint through a pin shaft, and the other end of the upper arm is connected to the upper arm through a pin shaft and used for lifting the upper arm.

Foretell but flexible insulating arm is folded to turning arm formula double platform of multi-angle motion, flexible arm includes insulating section and the non-insulating section through flexible hydro-cylinder and upper arm cooperation motion, the inboard of flexible arm is provided with the tank chain of control oil pipe free motion.

The crank arm type double-platform folding telescopic insulating arm capable of moving at multiple angles is characterized in that a hoisting device for hoisting operation tools and/or materials is arranged above the rear side of the T-shaped supporting seat.

The crank arm type double-platform folding telescopic insulating arm capable of moving at multiple angles comprises a lifting device for adjusting the vertical position of the working bucket relative to the small crank arm.

The multi-angle movable crank arm type double-platform folding telescopic insulating arm is characterized in that the work bucket is of a double-work bucket structure, an independent lifting sensor used for controlling the lifting height of the work bucket is arranged on the lifting device, and a rotary sensor used for controlling the rotating angle of the work bucket is arranged on the work bucket rotary oil cylinder.

The utility model discloses but multi-angle motion's crank arm formula double platform folds flexible insulating arm's beneficial effect is: through using rotary mechanism, the top loading that the drive was installed on the frame is rotary motion, through the underarm with the turrent connection, the support piece of underarm jacking cylinder and pull rod and with the coupling cooperation, constitute four-bar linkage, guarantee to go up to adorn and promote the in-process and be in the horizontality, the turning arm structure can not only make work fill and little turning arm rotatory around the little turning arm rotary cylinder of supporting seat front end portion together, can also let work fill independently around the work of little turning arm front end portion fill rotary cylinder rotatory, realize the two-way rotation of distal end and near-end, very nimble multi-angle that has satisfied work fill, the all-round motion function, need not rotate rotary mechanism alone again and drive the whole result of use that reaches of top loading, improve the security of seeking work all working angle in the work process. And the secondary leveling oil cylinder is used for driving the upper arm of the supporting arm and the lower arm of the supporting arm to move relatively, so that the horizontal position of the supporting seat is adjusted, and the purpose of adjusting the horizontal position of the working bucket is achieved.

Drawings

FIG. 1 is a schematic view of a right-side rear perspective structure of the present invention;

FIG. 2 is a schematic view of the left-side rear perspective structure of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic view of the top view of the present invention;

FIG. 5 is a schematic perspective view of the crank arm structure of the present invention

Fig. 6 is a schematic side view of the crank arm structure of the present invention.

Detailed Description

In order to make the technical solution better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-6, a crank arm type double-platform folding telescopic insulating arm capable of moving at multiple angles comprises a frame and a top-loading device arranged on the frame, wherein a crank arm 1 connected by a connecting mechanism and used for adjusting the position of a working bucket 4 of the top-loading device is arranged at the top end of an upper arm 5 of the top-loading device, and the crank arm comprises a supporting device 2 connected with the upper arm, a small crank arm 24 connected with the working bucket, and a crank arm rotating mechanism 25 connected with the supporting device and the small crank arm.

The connecting mechanism comprises a telescopic arm 51 which is provided with an insulating section and a non-insulating section and moves in a matched manner with the upper arm through a telescopic oil cylinder, the supporting device comprises a T-shaped supporting seat 21, the lower end of the supporting seat is connected to the upper side of the front end of the telescopic arm through a pin shaft, the connecting mechanism further comprises a supporting seat arm 22, one end of the supporting seat arm is connected to the lower side of the front end of the T-shaped supporting seat, the other end of the supporting seat arm is connected to the lower side of the front end of the telescopic arm, and the supporting seat arm comprises a supporting seat upper arm 221, a supporting seat lower arm 222 and a secondary leveling oil cylinder 23 which is connected with the supporting seat upper arm and the supporting seat lower arm; one end of the small crank arm is connected above the front end of the T-shaped supporting seat through a rotating mechanism, the other end of the small crank arm is connected with the bearing frame of the working bucket through a working bucket rotating oil cylinder, the rotating mechanism is a small crank arm rotating oil cylinder, one end of the small crank arm rotating oil cylinder is connected with the supporting seat, and the other end of the small crank arm rotating oil cylinder is connected with the small crank arm.

Hydraulic locks for locking the upper part and the crank arm at any motion stage are arranged on the lower arm jacking oil cylinder, the upper arm jacking oil cylinder and the leveling device oil cylinder.

Install the high altitude construction car of above-mentioned device, still include:

the upright post 6 is a supporting device of the whole upper assembly, so that the stability of the upper assembly work is ensured; the bottom of the upright column is connected with a frame base through a bolt, the top of the upright column is connected with the rotating mechanism through a bolt, the bottom of the upright column comprises a hydraulic oil tank for providing hydraulic oil for loading work, and the upper part of the upright column is provided with a collector ring and a collector ring for distributing an oil way and a circuit.

And the rotating mechanism 7 is composed of a motor speed reducer matched with a worm gear, is connected with the upright post through a bolt and is connected with the turret through a bolt, and the motor provides power to drive the speed reducer and the worm gear, so that hydraulic energy is converted into mechanical energy to drive the upper part to do rotary motion.

And the turret 8 is a supporting piece of a lower arm, a lower arm jacking oil cylinder and a pull rod and is matched with the shaft joint to form a four-bar mechanism, so that the upper part is in a horizontal state in the lifting process.

A lower arm 9, which is the lower lifting support of the platform, is formed by the intermediate insulated and non-insulated sections, and is fixed to the turret and the coupling by means of pins.

The connecting rod 91 is matched with the lower arm to jointly form a four-bar mechanism, so that the lower arm is ensured to be stably lifted under the action of the jacking oil cylinder and is fixed with the turret and the shaft joint through a pin shaft.

The lower arm jacking cylinder 92 is an actuating mechanism for lifting the lower arm, and the lower arm can freely move between 0 degree and 88 degrees with the horizontal plane through the lower arm jacking cylinder. The oil cylinder is provided with a balance valve or a locking piece, so that the oil cylinder can be locked when the lower arm jacking oil cylinder loses power at any movement position. The lower arm jacking oil cylinder is fixed with the turret through a pin shaft and fixed with the lower arm fixing support through a pin shaft.

The shaft joint 93, which is a connection transition body between the upper arm and the lower arm, is fixed with the upper arm, the lower arm, the pull rod and the like by using pin shafts.

The upper arm, upper arm one end is connected with the coupling, and the coupling is connected the near side and is equipped with upper arm fixed bolster, and the outside has fixed slider, prevents effectively that direct friction between flexible arm and the upper arm.

The upper arm lifting oil cylinder 52 is an actuating mechanism for lifting the upper arm, the upper arm can move between-25 degrees and 85 degrees by the upper arm lifting oil cylinder, and the oil cylinder is provided with a balance valve or a locking piece to ensure that the oil cylinder can be locked when the upper arm loses power at any movement position. The upper arm jacking oil cylinder is fixed with the shaft joint and the lower arm connecting support through pin shafts.

And the main leveling oil cylinder 53 is fixed with the shaft joint pin shaft and the upper arm fixing support through the cylinder body and the pin shaft. The secondary leveling oil cylinder is matched to level the working bucket, and the working bucket can be always in a horizontal state no matter the working bucket is positioned at any position.

The flexible arm, flexible arm comprise insulating section and uninsulation section, and flexible arm assembly is inboard at the upper arm, through flexible hydro-cylinder and upper arm cooperation motion, and flexible arm inboard is furnished with the tank chain to oil pipe can freely follow flexible arm motion and noninterference when guaranteeing flexible arm motion, prevents that oil pipe from damaging.

The upper arm telescopic oil cylinder 54 provides power for telescopic arm movement, the oil cylinder is provided with a balance valve or a locking piece, locking safety of any position is confirmed, one end of the rodless cavity is fixed with the upper arm through a pin shaft, and one end of the rod cavity is fixed with the telescopic arm through a pin shaft.

The hydraulic small crane 3 is used for hoisting heavy objects, and can be independently rotated, lifted and stretched by adopting hydraulic driving force. The connecting mode of the connecting device with the supporting seat is divided into two modes of mechanical sleeve positioning and rotary oil cylinder positioning.

The double working bucket platform comprises a first adjusting device 41 arranged at the top end of an insulating lifting arm of the overhead working truck, the first adjusting device is used for adjusting the integral horizontal working direction of a first working bucket and a second working bucket, a bearing frame which is arranged on the first adjusting device and extends towards two sides for increasing the horizontal working range, a second adjusting device and a third adjusting device which are arranged at two ends of the bearing frame, the second adjusting device is used for adjusting the horizontal working direction of the first working bucket, the third adjusting device is used for adjusting the horizontal working direction of the second working bucket, the first adjusting device, the second adjusting device and the third adjusting device all comprise adjusting rotary cylinders 45 used for adjusting the horizontal direction, rotary sensors 46 used for controlling the rotation angle of the working buckets are arranged on the rotary cylinders, and a first lifting device 47 used for adjusting the working height of the first working bucket is arranged on the second adjusting device, a second lifting device 48 for adjusting the working height of the second bucket is mounted on the third adjusting device. The first lifting device and the second lifting device respectively comprise a fixing frame for fixing the working bucket, a bottom beam is arranged on the fixing frame, a lifting oil cylinder for lifting the working bucket is mounted on the bottom beam, the top end of the lifting oil cylinder is connected with the working bucket, a guide cavity in the vertical direction is arranged at the middle position of the lifting oil cylinder, which is connected with the working bucket, a guide rail is arranged in the guide cavity, a guide slide block for controlling the working bucket to slide along the direction of the guide cavity is mounted at the corresponding position of the working bucket, and independent lifting sensors for controlling the lifting height of the working bucket are arranged on the first lifting device and the second lifting device.

The control device of hydro-cylinder in this scheme adopts current hydro-cylinder control technology, adopts the mode of hydro-cylinder body, oil pump, oil pipeline, circuit signal and controller promptly, and the signal of beginning work or stop work is sent to the oil pump to the controller, and oil pipeline is to the interior oil feed of hydro-cylinder or producing oil, through the action of oil feed oil production control hydro-cylinder body to reach the technological effect that will realize among this technical scheme.

The swing joint in this scheme adopts the articulated mode in round pin axle hole, and the part that has the round pin axle hole can be circular motion around the round pin axle, through other parts or add stop device, controls the turned angle of the part that has the round pin axle hole.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims (9)

1. The utility model provides a but folding flexible insulating arm of crank arm formula double platform of multi-angle motion, includes the frame, sets up the frame that bears on the frame, is equipped with the facial make-up that connects gradually the constitution by stand, capstan head, underarm, coupling, upper arm, flexible arm, work fill in the top of bearing the frame, is provided with the running gear who is used for two parallel arrangement of moving as a whole high altitude construction car, its characterized in that in the below of bearing the frame: the top of flexible arm is provided with the turning arm that is used for adjusting the work fill position, the turning arm includes a strutting arrangement who is used for being connected with the upper arm, a little turning arm that is used for connecting the work fill to and a rotary mechanism who is used for connecting strutting arrangement and little turning arm.

2. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 1, which is characterized in that: the supporting device comprises a T-shaped supporting seat, the lower end of the supporting seat is connected to the upper side of the front end of the telescopic arm through a pin shaft, the supporting device further comprises a supporting seat arm, one end of the supporting seat arm is connected to the lower side of the front end of the T-shaped supporting seat, the other end of the supporting seat arm is connected to the lower side of the front end of the telescopic arm, and the supporting seat arm comprises an upper supporting seat arm, a lower supporting seat arm and a secondary leveling oil cylinder, wherein the secondary leveling oil cylinder is connected with the upper supporting seat arm and the lower supporting seat arm; one end of the small crank arm is connected above the front end of the T-shaped supporting seat through a rotating mechanism, the other end of the small crank arm is connected with the bearing frame of the working bucket through a working bucket rotating oil cylinder, the rotating mechanism is a small crank arm rotating oil cylinder, one end of the small crank arm rotating oil cylinder is connected with the supporting seat, and the other end of the small crank arm rotating oil cylinder is connected with the small crank arm.

3. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 1, which is characterized in that: the hydraulic oil tank that is used for providing hydraulic oil for the hydro-cylinder of facial make-up is provided with to the stand bottom, hydraulic oil tank passes through oil pipe and is connected with the hydro-cylinder, the capstan head passes through rotary mechanism and connects the top at the stand.

4. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 3, which is characterized in that: install the underarm lift cylinder that is used for the underarm to lift on the underarm, the facial make-up still including being used for the underarm under the lift force of underarm lift cylinder steadily promote through round pin axle and capstan head, the fixed connecting rod of coupling, the one end of underarm, underarm lift cylinder, pull rod is connected on the capstan head, constitutes and is used for the facial make-up to be in the four-bar linkage of horizontality in the lift process.

5. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 1, which is characterized in that: the upper arm comprises an upper arm lifting oil cylinder, one end of the upper arm is connected to the shaft joint through a pin shaft, and the other end of the upper arm is connected to the upper arm through a pin shaft and used for lifting the upper arm.

6. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 2, which is characterized in that: the telescopic boom comprises an insulating section and a non-insulating section which move in a matched mode through the telescopic oil cylinder and the upper arm, and a tank chain for controlling the free movement of the oil pipe is arranged on the inner side of the telescopic boom.

7. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 2, which is characterized in that: and a hoisting device for hoisting the working tool and/or the material is arranged above the rear side of the T-shaped supporting seat.

8. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 2, which is characterized in that: the working bucket comprises a lifting device used for adjusting the vertical position of the working bucket relative to the small crank arm.

9. The multi-angle movable crankarm type double-platform folding telescopic insulating arm according to claim 8, which is characterized in that: the working bucket is of a double-working bucket structure, an independent lifting sensor for controlling the lifting height of the working bucket is arranged on the lifting device, and a rotary sensor for controlling the rotating angle of the working bucket is arranged on the working bucket rotating oil cylinder.

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