A high-altitude cantilever work platform with dynamic balancing counterweight and method

Abstract

A cantilevered work platform and method with dynamic balancing counterweight are disclosed, belonging to the technical field of high-altitude work safety equipment. The platform includes a main boom, a telescopic boom, a personnel carrier frame, and a base. A dynamic center of gravity compensation device, consisting of a counterweight slide rail, a movable counterweight block, and a drive mechanism, is installed on the base. The counterweight block, linked to the pitch angle and telescopic stroke of the main boom via displacement sensors, moves in real-time along the slide rail in the opposite direction to counteract the variable overturning moment generated during operation. Simultaneously, a dual-rope self-locking fall arrest system, independent of the platform structure, is installed above the personnel carrier frame. This system includes two safety ropes anchored to high-level fixed points and corresponding speed difference controllers, directly connected to the worker's safety belt. This invention improves the overall anti-overturning stability of the machine by actively adjusting the counterweight position and ensures personnel safety even in the event of platform failure, significantly enhancing the reliability and safety of high-altitude operations.

Description

Technical Field

[0001] This invention belongs to the field of dynamic balancing technology for aerial cantilever work platforms, and specifically relates to an aerial cantilever work platform and method with dynamic balancing counterweight. Background Technology

[0002] Aerial work platforms are widely used for the inspection and maintenance of metal structures in hydropower dams, bridges, and high-rise buildings. These platforms typically achieve long-distance operations via a main boom and telescopic boom, and their end-capture frame must maintain horizontal stability under complex postures. Existing platforms generally use static counterweights to balance overturning moments, i.e., a counterweight of a certain mass is fixedly installed on the base. However, when the main boom pitches or extends, the overall center of gravity changes dynamically, and the static counterweight cannot compensate for the resulting variable overturning moment in real time, leading to decreased platform stability, especially under conditions of large cantilever and high wind loads, which can easily cause swaying or even instability.

[0003] To improve leveling performance, some platforms have incorporated hydraulic leveling mechanisms. However, these mechanisms can only adjust the posture of the personnel carrier frame and cannot address the fundamental stability issues caused by overall center of gravity shift. Furthermore, traditional fall protection systems largely rely on the platform's own structure; if a structural failure occurs, personnel safety is compromised. Therefore, there is an urgent need for an aerial work platform that can achieve both dynamic center of gravity compensation and independent personal safety protection, addressing the shortcomings of existing technologies in terms of stability, safety, and operational adaptability. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-altitude cantilever operation platform and method with dynamic balancing counterweight. The present invention sets up a movable counterweight block and its driving mechanism, and adjusts the position of the counterweight in real time according to the pitch angle and extension stroke of the main boom, so as to dynamically counteract the overturning moment caused by the shift of the center of gravity during operation, effectively suppress the platform swaying, and significantly enhance the overall stability under working conditions such as large cantilever and high wind load.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A cantilevered aerial work platform with dynamic balancing counterweight includes a main boom base, a main boom, a telescopic boom, a platform leveling mechanism, a platform rotating mechanism, a personnel carrier, a dynamic balancing counterweight, and a counterweight block. The main boom base is used for rotatable mounting on an external pitch drive mechanism; The main boom includes the main boom rod, the auxiliary boom rod, and the connecting plate; The telescopic boom is slidably located inside the main boom. The platform leveling mechanism and the platform rotation mechanism are connected sequentially between the end of the telescopic boom and the personnel carrying frame; The dynamic balancing counterweight is linked to the external pitch drive mechanism; The counterweight is a detachable counterweight unit.

[0006] Preferably, the main boom base includes a main boom base stepped mounting shaft, a main boom hydraulic mechanism mounting boss, and a main boom mounting lug. The outer periphery of the stepped mounting shaft of the main boom base is provided with a keyway for mounting a second driven gear; The mounting boss of the main boom hydraulic mechanism is provided with a mounting groove for the main boom hydraulic device and a connection hole for the main boom hydraulic device. The main boom mounting lug is provided with boom mounting holes and auxiliary boom mounting holes.

[0007] Preferably, the main boom is hinged to the boom mounting hole through the main boom mounting hole; the auxiliary boom is hinged to the auxiliary boom mounting hole through the auxiliary boom mounting hole; the connecting plate connects the main boom and the auxiliary boom through the connecting plate mounting shaft; the main boom base is provided with a main boom swing avoidance channel, and the auxiliary boom is provided with a main boom hydraulic device operation avoidance groove.

[0008] Preferably, it also includes a main boom hydraulic device; the cylinder of the main boom hydraulic device is fixed in the main boom hydraulic device mounting groove through the cylinder mounting hole, and its piston rod is hinged to the main boom hydraulic device piston rod mounting hinge seat on the main boom rod.

[0009] Preferably, the telescopic boom includes a telescopic boom body and a telescopic boom head; the telescopic boom head is provided with a leveling mechanism hydraulic device mounting hole, a leveling mechanism hydraulic device running clearance groove, and a leveling mechanism tripod plate mounting hole; Preferably, it also includes a telescopic boom drive device; the cylinder of the telescopic boom drive device is fixed inside the main boom through the telescopic boom drive mounting hole, and its piston rod is connected to the telescopic boom body.

[0010] Preferably, the platform leveling mechanism includes two tripod plates, a leveling main rod, a leveling auxiliary rod, a leveling active hydraulic device, and a leveling micro-motion hydraulic device; One end of the tripod piece is hinged to the tripod piece mounting hole of the leveling mechanism through the tripod piece mounting hole, and the other end is hinged to the leveling main rod and the leveling secondary rod through the first mounting hole of the leveling main rod and the first mounting hole of the leveling secondary rod, respectively. The leveling main rod is hinged to the first mounting hole of the platform support frame and the second mounting hole of the platform support frame via a pin. The leveling auxiliary rod is hinged to the second mounting hole of the leveling auxiliary rod of the platform support frame via a pin. The cylinder body of the leveling active hydraulic device is connected to the leveling mechanism hydraulic device mounting hole of the telescopic boom head through the leveling active cylinder mounting hole, and its leveling active hydraulic piston rod is hinged to the leveling active hydraulic device piston rod mounting hole of the tripod plate. The piston rod of the leveling micro-motion hydraulic device is hinged to the leveling micro-motion hydraulic mounting hinge of the leveling main rod, and its cylinder is hinged to the first mounting hole of the leveling secondary rod of the tripod plate; the leveling secondary rod is provided with a U-shaped groove for the operation avoidance of the leveling micro-motion hydraulic device.

[0011] Preferably, the platform rotation mechanism includes a platform support frame, a platform transmission base, a platform rotation main drive motor, a platform rotation drive gear, a platform rotation driven gear, a platform rotation first thrust bearing, and a platform rotation second thrust bearing; The platform support frame is connected to the platform leveling mechanism; The manned frame is rotatably mounted on the platform transmission base via the manned frame base shaft; The driven gear of the platform rotation is fixed to the shaft of the manned frame base through the keyway of the driven gear of the platform rotation, and meshes with the driving gear of the platform rotation. The platform rotation drive gear is driven by the platform rotation main drive motor; The platform rotates, and the second thrust bearing supports the base shaft of the manned frame.

[0012] Preferably, the passenger frame includes a passenger frame base shaft, a base plate frame, a kick plate, and a protective fence; the bottom of the base plate frame is provided with a passenger frame base shaft, and the upper section of the passenger frame base shaft is provided with an mounting overlap boss, which is installed on the second thrust bearing of the platform rotation for connection with the platform rotation mechanism.

[0013] Preferably, the dynamic balancing counterweight includes a dynamic balancing counterweight block, a dynamic balancing counterweight mounting bearing, and a dynamic balancing counterweight transmission gear; The dynamic balance counterweight includes a dynamic balance counterweight gear, a dynamic balance counterweight mounting bearing mounting through hole, a U-shaped mounting lug, and a dynamic balance counterweight body. The dynamic balance counterweight gear is fixed to the end of the dynamic balance counterweight. The dynamic balance counterweight is rotatably mounted on an external mounting shaft via a dynamic balance counterweight mounting bearing; The dynamic balance counterweight transmission gear is fixed on the external pitch drive shaft and the opposite mounting shaft, and meshes with the dynamic balance counterweight block gear.

[0014] Preferably, the counterweight is provided with a handling handle and a counterweight mounting hole for fixed installation on the main boom base or external base.

[0015] A method for using a cantilevered aerial work platform with dynamic balancing counterweight includes the following steps: S1. Module installation: The main boom base is installed on the pitch drive mechanism of the external equipment via its main boom base stepped mounting shaft, and the power connection is completed through the keyway of the second set of driven gears; at the same time, the counterweight is installed at the designated position.

[0016] S2. Automatic leveling: The platform leveling mechanism is activated to automatically adjust the platform so that the man-carrying frame remains horizontal at all times.

[0017] S3. Safe Positioning: The worker enters the personnel carrier and fastens the safety belt to the lower end of the independently installed fall brake.

[0018] S4. Initial attitude adjustment: Activate the orientation and pitch drive mechanism of the external equipment to adjust the main boom base to the approximate attitude of the target working area.

[0019] S5. Main boom extension: Drive the main boom hydraulic device to extend the main boom and auxiliary boom to the predetermined working angle.

[0020] S6. Telescopic Positioning: Drive the telescopic boom drive device to extend the telescopic boom to the target working distance.

[0021] S7. Platform fine-tuning: Activate the platform rotation mechanism to rotate the manned frame to a position below the equipment for operation; S8. Dynamic operation: During the maintenance process, the external pitch drive mechanism can adjust the attitude according to the maintenance area on site, and the dynamic balance counterweight will rotate in the opposite direction synchronously to continuously achieve dynamic center of gravity compensation and ensure stable and safe operation.

[0022] Preferably, in step S2, the leveling active hydraulic device and the leveling micro-motion hydraulic device work together to maintain the level of the manned frame through a three-bar linkage consisting of the tripod plate, the leveling main rod, and the leveling auxiliary rod.

[0023] Preferably, in step S8, when the external pitch drive mechanism rotates, the dynamic balance counterweight block is driven to rotate in the opposite direction through the dynamic balance counterweight transmission gear to counteract the overturning torque caused by the change in the posture of the main arm and the manned frame.

[0024] Preferably, the second driven gear on the stepped mounting shaft of the main boom base is mounted with a keyway for connecting with the driven gear of the external pitch drive system to transmit driving torque.

[0025] The present invention can achieve the following beneficial effects: 1. The present invention, through the integrated dynamic balance counterweight system and its drive mechanism, adjusts the counterweight position in real time according to the boom pitch angle and telescopic stroke, dynamically offsetting the overturning moment caused by the shift of the center of gravity during operation, effectively suppressing platform swaying, and significantly enhancing the overall stability under conditions such as large overhang and high wind load.

[0026] 2. The counterweight system of this invention is linked with the motion parameters of the main boom to form a closed-loop adjustment mechanism, which overcomes the shortcomings of traditional static counterweights that cannot adapt to dynamic working conditions, enabling the platform to maintain good balance performance under different working postures, thereby improving work efficiency and operating comfort.

[0027] 3. The dual-rope self-locking fall arrest system of this invention is directly anchored to a high-level fixed structure, without relying on the platform itself for support. Even if the platform experiences structural failure or overturning, it can still reliably protect workers, meeting the safety principle of "lifeline independent of work platform" in high-altitude operations and significantly improving the level of intrinsic safety. Attached Figure Description The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a diagram showing the overall structure of the platform; Figure 2 This is a connection diagram of the sub-components of this platform; Figure 3 This is a screenshot showing the usage effect of this platform (dual-platform structure). Figure 4 This diagram shows the structure of the mounting boss for the main boom hydraulic mechanism of this platform. Figure 5 This is a diagram illustrating the connection effect of the main boom, auxiliary boom, connecting plate, and main boom hydraulic device of this platform. Figure 6 This is a diagram illustrating the connection between the telescopic boom and the telescopic boom drive device of this platform. Figure 7 This is a structural diagram of the platform leveling mechanism for this platform; Figure 8 This is a structural diagram of the platform's rotating mechanism; Figure 9 This is a diagram of the manned frame structure of this platform; Figure 10 This is an installation diagram of the platform rotation mechanism and platform leveling mechanism of this platform; Figure 11 This is a diagram of the dynamic balancing counterweight structure for this platform; Figure 12 This is a structural diagram of the counterweight block for this platform.

[0028] In the diagram: Main boom base 60, main boom base stepped mounting shaft 60-1, safety baffle mounting groove 60-1-1, second driven gear mounting keyway 60-1-2, main boom hydraulic mechanism mounting boss 60-2, main boom hydraulic device mounting groove 60-2-1, main boom hydraulic device connecting hole 60-2-2, main boom mounting ear plate 60-3, boom mounting hole 60-3-1, auxiliary boom mounting hole 60-3-2, main boom swing clearance channel 60-4, main boom rod 61, main boom rod mounting hole 61-1, telescopic boom rod mounting groove 61-2, connecting plate mounting shaft 61-3, main boom... Hydraulic unit piston rod mounting hinge 61-4, auxiliary boom rod 62, auxiliary boom rod mounting hole 62-1, main boom hydraulic unit running clearance groove 62-2, connecting plate 63, main boom hydraulic unit 64, cylinder mounting hole 64-1, piston rod 64-2, telescopic boom rod 65, telescopic boom body 65-1, telescopic boom rod head 65-2, leveling mechanism hydraulic unit mounting hole 65-2-1, leveling mechanism hydraulic unit running clearance groove 65-2-2, leveling mechanism tripod plate mounting hole 65-2-3, telescopic boom drive unit 66, telescopic boom drive mounting hole 66-1, piston rod 66-2. Platform leveling mechanism 7, tripod plate 70, tripod plate mounting hole 70-1, leveling active hydraulic device piston rod mounting hole 70-2, leveling main rod first mounting hole 70-3, leveling auxiliary rod first mounting hole 70-4, leveling main rod 71, leveling main rod second mounting hole 71-1, platform support frame first mounting hole 71-2, leveling micro-motion hydraulic mounting hinge 71-3, leveling auxiliary rod 72, mounting hole 72-1, leveling micro-motion hydraulic device running avoidance U-shaped groove 72-2, leveling active hydraulic device 73, leveling active cylinder mounting hole 73-1, leveling active hydraulic piston rod 73-2, leveling micro-motion hydraulic device 74. Platform rotation mechanism 8, platform support frame 80, second mounting hole 80-1 of platform support frame, second mounting hole 80-2 of leveling auxiliary rod, platform transmission base 81, main drive motor for platform rotation 82, driving gear for platform rotation 83, driven gear for platform rotation 84, first thrust bearing for platform rotation 85, second driven gear for platform rotation 86. 9. Personnel frame, 90. Personnel frame base shaft, 90-1. Keyway for mounting the platform rotation driven gear, 90-2. Mounting overlap boss, 91. Base frame, 92. Kickboard, 93. Protective fence; Counterweight 10, Handle 10-1, Counterweight mounting hole 10-2; Dynamic balancing counterweight 11, dynamic balancing counterweight transmission gear 11-1, dynamic balancing counterweight mounting bearing 11-2, dynamic balancing counterweight block 11-3, dynamic balancing counterweight block gear 11-3-1, dynamic balancing counterweight block mounting bearing mounting through hole 11-3-2, U-shaped mounting ear plate 11-3-3, dynamic balancing counterweight body 11-3-4; Track 14; External mounting shaft 40-4-1, main rotating base bracket 40, external pitch drive shaft 50-3, auxiliary rotating base bracket 50. Detailed Implementation

[0029] Preferred solutions include Figures 1 to 12 As shown, a high-altitude cantilever work platform with dynamic balancing counterweight is designed as a highly integrated modular work unit. It can be installed as a whole on the external pitch drive shaft of various external high-altitude work equipment such as hydropower station maintenance trolleys, bridge inspection vehicles, and construction hoisting platforms, thereby quickly endowing them with high-precision, high-stability, and high-safety end-effector capabilities.

[0030] The platform mainly includes a main boom base 60, a main boom, a telescopic boom 65, a platform leveling mechanism 7, a platform rotating mechanism 8, a personnel carrying frame 9, a dynamic balancing counterweight 11, and a counterweight block 10.

[0031] The main boom base 60 is the core of the entire module for installation and load-bearing. It includes a main boom base stepped mounting shaft 60-1, a main boom hydraulic mechanism mounting boss 60-2, and a main boom mounting lug 60-3. The main boom base 60 is rotatably mounted on the pitch drive shaft of the external equipment via its main boom base stepped mounting shaft 60-1. Furthermore, the outer periphery of the main boom base stepped mounting shaft 60-1 is provided with a second driven gear mounting keyway 60-1-2 for connecting with the driven gear in the external pitch drive system to transmit driving torque and achieve synchronous pitching of the main boom base 60 with the external system.

[0032] The main boom base 60 has a main boom swing clearance channel 60-4 inside, providing space for the main boom movement. The main boom hydraulic mechanism mounting boss 60-2 is machined with a main boom hydraulic device mounting groove 60-2-1 and a main boom hydraulic device connecting hole 60-2-2 for mounting the main boom drive hydraulic cylinder. The main boom mounting ear plate 60-3 has a boom mounting hole 60-3-1 and a secondary boom mounting hole 60-3-2, respectively for hinged connection of the main boom assembly.

[0033] The main boom consists of a main boom rod 61, a secondary boom rod 62, and a connecting plate 63. The main boom rod 61 is hinged to the boom mounting hole 60-3-1 on the main boom mounting lug 60-3 via its main boom rod mounting hole 61-1; the secondary boom rod 62 is hinged to the secondary boom mounting hole 60-3-2 via its secondary boom mounting hole 62-1. The main boom rod 61 and the secondary boom rod 62 are connected by the connecting plate 63 and the connecting plate mounting shaft 61-3, forming a stable parallelogram linkage structure. The secondary boom rod 62 is equipped with a main boom hydraulic device operation clearance groove 62-2 to ensure interference-free movement of the hydraulic cylinder.

[0034] To drive the boom to extend and retract, the platform is equipped with a boom hydraulic device 64. The cylinder of the boom hydraulic device 64 is fixed in the boom hydraulic device mounting groove 60-2-1 of the boom base 60 through the cylinder mounting hole 64-1, and its piston rod 64-2 is hinged to the boom hydraulic device piston rod mounting hinge seat 61-4 on the boom rod 61.

[0035] Furthermore, the telescopic boom 65 is slidably disposed inside the main boom 61 for adjusting the working radius. The telescopic boom 65 includes a telescopic boom body 65-1 and a telescopic boom head 65-2. The telescopic boom head 65-2 is provided with a leveling mechanism hydraulic device mounting hole 65-2-1, a leveling mechanism hydraulic device running clearance groove 65-2-2, and a leveling mechanism tripod plate mounting hole 65-2-3 for mounting the leveling mechanism. The platform is also equipped with a telescopic boom drive device 66, whose cylinder body is fixed inside the main boom 61 through the telescopic boom drive mounting hole 66-1, and whose piston rod 66-2 is connected to the telescopic boom body 65-1 for driving the telescopic boom to extend or retract.

[0036] The personnel carrier frame 9 is connected to the end of the telescopic boom head 65-2 via the platform leveling mechanism 7 and the platform rotation mechanism 8. The personnel carrier frame 9 includes a base frame 91, a kick plate 92, and a protective fence 93, providing a safe and comfortable working environment for workers. The bottom of the base frame 91 is provided with an mounting overlap boss 90-2 for reliable connection with the platform rotation mechanism 8.

[0037] The platform leveling mechanism 7 ensures that the manned frame 9 remains level in any boom posture. It includes a tripod plate 70, a main leveling rod 71, a secondary leveling rod 72, an active leveling hydraulic device 73, and a micro-leveling hydraulic device 74. One end of the tripod plate 70 is hinged to the leveling mechanism tripod plate mounting hole 65-2-3 of the telescopic boom head 65-2 through a tripod plate mounting hole 70-1. The other end is hinged to the main leveling rod 71 and the secondary leveling rod 72 through the first mounting hole 70-3 of the main leveling rod and the first mounting hole 70-4 of the secondary leveling rod, respectively. The main leveling rod 71 is hinged to the second mounting hole 80-1 of the platform support frame 80 via a pin; the secondary leveling rod 72 is hinged to the second mounting hole 80-2 of the platform support frame 80 via a pin. The cylinder of the leveling active hydraulic device 73 is connected to the leveling mechanism hydraulic device mounting hole 55-2-1 of the telescopic boom head 65-2 via the leveling active cylinder mounting hole 73-1. Its leveling active hydraulic piston rod 73-2 is hinged to the leveling active hydraulic device piston rod mounting hole 70-2 of the tripod plate 70. The piston rod of the leveling micro-motion hydraulic device 74 is hinged to the leveling micro-motion hydraulic mounting hinge 71-3 of the leveling main rod 71, and its cylinder is hinged to the first mounting hole 70-4 of the leveling secondary rod of the tripod plate 70. The leveling secondary rod 72 is provided with a U-shaped groove 72-2 to avoid movement interference.

[0038] The platform rotation mechanism 8 allows the manned frame 9 to rotate. It includes a platform support frame 80, a platform transmission base 81, a main drive motor 82 for platform rotation, a driving gear 83 for platform rotation, a driven gear 84 for platform rotation, a first thrust bearing 85 for platform rotation, and a second thrust bearing 86 for platform rotation. The manned frame 9 is rotatably mounted on the platform transmission base 81 via a manned frame base shaft 90, and is axially supported by the second thrust bearing 86 for platform rotation. The driven gear 84 is fixed to the manned frame base shaft 90 via a keyway 90-1 for platform rotation and meshes with the driving gear 83 for platform rotation, driven by the main drive motor 82, thereby achieving precise rotation of the manned frame 9.

[0039] The counterweight system of the present invention includes a detachable counterweight 10 and a dynamic balancing counterweight 11. The counterweight 10 is provided with a handling handle 10-1 and a counterweight mounting hole 10-2, and can be flexibly installed on the main boom base 60 or an external base according to the operation requirements to provide static balance.

[0040] The dynamic balancing counterweight 11 is the core innovation of this invention. During the movement of the pitch drive mechanism, it compensates in real time for the overturning moment caused by the shift in the load's center of gravity, greatly improving the dynamic stability of the entire machine under cantilever conditions. It includes a dynamic balancing counterweight block 11-3, a dynamic balancing counterweight mounting bearing 11-2, and a dynamic balancing counterweight transmission gear 11-1. The dynamic balancing counterweight block 11-3 is rotatably mounted on an external fixed mounting shaft, such as the chassis beam of an external device, via the dynamic balancing counterweight mounting bearing 11-2. The dynamic balancing counterweight block 11-3 is a composite structural component, its main body being the dynamic balancing counterweight body 11-3-4, typically made of high-density metals such as cast iron or tungsten alloy to provide sufficient balancing mass. At one end of the dynamic balancing counterweight 11-3-4, a U-shaped mounting lug 11-3-3 is provided for rotatably connecting it to an external fixed support structure, such as a load-bearing beam of a dam or factory building, via a pin, making it a swing-type passive balancing body. At the other end, a dynamic balancing counterweight gear 11-3-1 is machined on the dynamic balancing counterweight 11-3-4 and is concentrically arranged with the dynamic balancing counterweight mounting bearing through hole 11-3-2. The dynamic balancing counterweight mounting bearing 11-2 is installed in this through hole, allowing the entire dynamic balancing counterweight 11-3 to rotate smoothly around its own axis. The dynamic balancing counterweight transmission gear 11-1 is fixed to an external pitch drive shaft and meshes with the dynamic balancing counterweight gear 11-3-1.

[0041] Its working principle is as follows: When the external pitch drive mechanism drives the main boom base 60 to pitch, it will synchronously drive the dynamic balance counterweight transmission gear 11-1 to rotate, and then force the dynamic balance counterweight block 11-3 to rotate in the opposite direction through gear meshing. The torque generated by this reverse rotation can just offset the center of gravity shift caused by the lifting or lowering of the main boom and load, realizing real-time, adaptive dynamic center of gravity balance, offsetting the overturning torque caused by the change in the posture of the boom and the manned frame, and significantly improving the stability of the whole machine.

[0042] In addition, the present invention can be equipped with an independent fall brake, the upper end of which is fixed to the upper track 14 or an independent support structure such as a dam, and the lower end provides a suspension point for the safety belt of the operator, thus forming a dual personal safety guarantee that does not depend on the work platform itself.

[0043] Based on the above structure, the present invention also provides a method for using a high-altitude cantilever work platform with dynamic balancing counterweight, comprising the following steps: S1. Module installation: The main boom base 60 is installed on the pitch drive mechanism of the external equipment through its main boom base step mounting shaft 60-1, and the power connection is completed through the second set of driven gear mounting keyway 60-1-2; at the same time, the counterweight block 10 is installed at the designated position.

[0044] S2. Automatic leveling: The platform leveling mechanism 7 starts automatically, and the leveling active hydraulic device 73 and the leveling micro-motion hydraulic device 74 work together to maintain the level of the personnel frame 9 through the three-bar linkage consisting of the tripod plate 70, the leveling main rod 71 and the leveling auxiliary rod 72.

[0045] S3. Safe Positioning: The operator enters the personnel carrier 9 and fastens the safety belt to the lower end of the independently installed fall brake.

[0046] S4. Initial attitude adjustment: Activate the orientation and pitch drive mechanism of the external equipment to adjust the main boom base 60 to the approximate attitude of the target working area.

[0047] S5. Main boom extension: Drive the main boom hydraulic device 64 to extend the main boom 61 and the auxiliary boom 62 to the predetermined working angle.

[0048] S6. Telescopic positioning: Drive the telescopic boom drive device 66 to extend the telescopic boom 65 to the target working distance.

[0049] S7. Platform fine-tuning: Activate the platform rotation mechanism 8 to allow the personnel carrier 9 to rotate to a position below the equipment for operation; S8. Dynamic operation: During the maintenance process, the external pitch drive mechanism can adjust the attitude according to the maintenance area on site, and the dynamic balance counterweight 11 will rotate in the opposite direction synchronously to continuously achieve dynamic center of gravity compensation and ensure stable and safe operation.

[0050] In summary, this invention, through modular design, precise multi-stage linkage mechanism, high-response automatic leveling system, innovative gear-linked dynamic balance counterweight, and independent fall protection, constructs a safe, efficient, stable, and easily integrated high-altitude cantilever operation solution, which has outstanding practical value and broad market application prospects.

[0051] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A cantilevered work platform with dynamic balancing counterweight, characterized in that, It includes a main boom base (60), main boom, telescopic boom (65), platform leveling mechanism (7), platform rotation mechanism (8), personnel frame (9), dynamic balance counterweight (11) and counterweight block (10). The main boom base (60) is rotatably mounted on an external pitch drive mechanism; The main boom includes the main boom rod (61), the auxiliary boom rod (62), and the connecting plate (63). The telescopic boom (65) is slidably disposed within the main boom (61); The platform leveling mechanism (7) and the platform rotation mechanism (8) are connected in sequence between the end of the telescopic boom (65) and the manned frame (9); The dynamic balancing counterweight (11) is linked with the external pitch drive mechanism; The counterweight (10) is a detachable counterweight unit.

2. The aerial cantilever work platform with dynamic balance counterweight according to claim 1, characterized in that: The main boom base (60) includes a main boom base stepped mounting shaft (60-1), a main boom hydraulic mechanism mounting boss (60-2), and a main boom mounting ear plate (60-3). The outer periphery of the stepped mounting shaft (60-1) of the main boom base is provided with a second driven gear mounting keyway (60-1-2). The main boom hydraulic mechanism mounting boss (60-2) is provided with a main boom hydraulic device mounting groove (60-2-1) and a main boom hydraulic device connection hole (60-2-2). The main boom mounting ear plate (60-3) is provided with a boom mounting hole (60-3-1) and a secondary boom mounting hole (60-3-2).

3. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 2, characterized in that: The main boom (61) is hinged to the boom mounting hole (60-3-1) through the main boom mounting hole (61-1); the auxiliary boom (62) is hinged to the auxiliary boom mounting hole (60-3-2) through the auxiliary boom mounting hole (62-1); the connecting plate (63) connects the main boom (61) and the auxiliary boom (62) through the connecting plate mounting shaft (61-3); the main boom base (60) is provided with a main boom swing avoidance channel (60-4), and the auxiliary boom (62) is provided with a main boom hydraulic device operation avoidance groove (62-2).

4. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 2, characterized in that: It also includes a main boom hydraulic device (64); the cylinder of the main boom hydraulic device (64) is fixed in the main boom hydraulic device mounting groove (60-2-1) through the cylinder mounting hole (64-1), and its piston rod (64-2) is hinged to the main boom hydraulic device piston rod mounting hinge seat (61-4) of the main boom rod (61).

5. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 1, characterized in that: The telescopic boom (65) includes a telescopic boom body (65-1) and a telescopic boom head (65-2); the telescopic boom head (65-2) is provided with a leveling mechanism hydraulic device mounting hole (65-2-1), a leveling mechanism hydraulic device running clearance groove (65-2-2), and a leveling mechanism tripod plate mounting hole (65-2-3).

6. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 5, characterized in that: It also includes a telescopic boom drive device (66); the cylinder of the telescopic boom drive device (66) is fixed in the main boom rod (61) through the telescopic boom drive mounting hole (66-1), and its piston rod (66-2) is connected to the telescopic boom body (65-1).

7. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 1, characterized in that: The platform leveling mechanism (7) includes two tripod plates (70), a leveling main rod (71), a leveling auxiliary rod (72), a leveling active hydraulic device (73), and a leveling micro-motion hydraulic device (74). One end of the tripod piece (70) is hinged to the tripod piece mounting hole (65-2-3) of the leveling mechanism through the tripod piece mounting hole (70-1), and the other end is hinged to the leveling main rod (71) and the leveling secondary rod (72) through the first mounting hole (70-3) of the leveling main rod and the first mounting hole (70-4) of the leveling secondary rod, respectively. The leveling main rod (71) is hinged to the first mounting hole (71-2) of the leveling main rod platform support frame and the second mounting hole (80-1) of the platform support frame (80) through a pin; The leveling auxiliary rod (72) is hinged to the leveling auxiliary rod mounting hole (72-1) and the second mounting hole (80-2) of the leveling auxiliary rod of the platform support frame (80) by means of a pin; The cylinder body of the leveling active hydraulic device (73) is connected to the leveling mechanism hydraulic device mounting hole (55-2-1) of the telescopic boom head (65-2) through the leveling active cylinder mounting hole (73-1), and its leveling active hydraulic piston rod (73-2) is hinged to the leveling active hydraulic device piston rod mounting hole (70-2) of the tripod plate (70). The piston rod of the leveling micro-motion hydraulic device (74) is hinged to the leveling micro-motion hydraulic mounting hinge (71-3) of the leveling main rod (71), and its cylinder is hinged to the first mounting hole (70-4) of the leveling auxiliary rod of the tripod plate (70); the leveling auxiliary rod (72) is provided with a U-shaped groove (72-2) for the operation avoidance of the leveling micro-motion hydraulic device.

8. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 1, characterized in that: The platform rotation mechanism (8) includes a platform support frame (80), a platform transmission base (81), a platform rotation main drive motor (82), a platform rotation drive gear (83), a platform rotation driven gear (84), a platform rotation first thrust bearing (85), and a platform rotation second thrust bearing (86). The platform support frame (80) is connected to the platform leveling mechanism (7); The manned frame (9) is rotatably mounted on the platform transmission base (81) via the manned frame base shaft (90); The platform rotation driven gear (84) is fixed to the manned frame base shaft (90) through the platform rotation driven gear mounting keyway (90-1) and meshes with the platform rotation drive gear (83); The platform rotation drive gear (83) is driven by the platform rotation main drive motor (82); The platform rotates the second thrust bearing (86) to support the manned frame base shaft (90).

9. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 1, characterized in that: The manned frame (9) includes a manned frame base shaft (90), a base frame (91), a kick plate (92), and a protective fence (93); the bottom of the base frame (91) is provided with a manned frame base shaft (90), and the upper section of the manned frame base shaft (90) is provided with an mounting overlap boss (90-2). The mounting overlap boss (90-2) is installed on the second thrust bearing (86) of the platform rotation and is used to connect with the platform rotation mechanism (8).

10. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 1, characterized in that: The dynamic balancing counterweight (11) includes a dynamic balancing counterweight block (11-3), a dynamic balancing counterweight mounting bearing (11-2), and a dynamic balancing counterweight transmission gear (11-1). The dynamic balancing counterweight (11-3) includes a dynamic balancing counterweight gear (11-3-1), a dynamic balancing counterweight mounting bearing mounting through hole (11-3-2), a U-shaped mounting ear plate (11-3-3), and a dynamic balancing counterweight body (11-3-4). The dynamic balancing counterweight gear (11-3-1) is fixed to the end of the dynamic balancing counterweight (11-3). The dynamic balance counterweight (11-3) is rotatably mounted on the external mounting shaft (40-4-1) via the dynamic balance counterweight mounting bearing (11-2); The dynamic balance counterweight transmission gear (11-1) is fixed on the external pitch drive shaft (50-3) and the opposite mounting shaft, and meshes with the dynamic balance counterweight block gear (11-3-1).

11. A high-altitude cantilever work platform with dynamic balance counterweight according to claim 1, characterized in that: The counterweight (10) is provided with a handling handle (10-1) and a counterweight mounting hole (10-2) for fixed installation on the main boom base (60) or the external base.

12. A method of using a high-altitude cantilever work platform with dynamic balance counterweight according to any one of claims 1-11, characterized in that, Includes the following steps: S1. Module installation: The main boom base (60) is installed on the pitch drive mechanism of the external equipment through its main boom base stepped mounting shaft (60-1), and the power connection is completed through the second set of driven gear mounting keyway (60-1-2); at the same time, the counterweight (10) is installed at the designated position. S2. Automatic leveling: Start the platform leveling mechanism (7) to automatically adjust so that the man-carrying frame (9) always remains horizontal; S3. Safe positioning: The operator enters the personnel carrier (9) and hooks the safety belt to the lower end of the independently set fall brake; S4. Initial attitude adjustment: Start the orientation and pitch drive mechanism of the external equipment to adjust the main boom base (60) to the approximate attitude of the target working area; S5. Main boom extension: Drive the main boom hydraulic device (64) to extend the main boom (61) and the auxiliary boom (62) to the predetermined working angle; S6. Telescopic positioning: Drive the telescopic boom drive device (66) to extend the telescopic boom (65) to the target working distance; S7. Platform fine-tuning: Activate the platform rotation mechanism (8) to allow the manned frame (9) to rotate to the bottom of the equipment to carry out work; S8. Dynamic operation: During the maintenance process, the external pitch drive mechanism can adjust the attitude according to the maintenance area on site, and the dynamic balance counterweight (11) will rotate in the opposite direction synchronously to continuously realize dynamic center of gravity compensation and ensure stable and safe operation.

13. The method of using a high-altitude cantilever work platform with dynamic balancing counterweight according to claim 12, characterized in that: In step S2, the leveling active hydraulic device (73) and the leveling micro-motion hydraulic device (74) work together to maintain the level of the manned frame (9) through a three-bar linkage consisting of the tripod plate (70), the leveling main rod (71) and the leveling auxiliary rod (72).

14. The method of using a high-altitude cantilever work platform with dynamic balancing counterweight according to claim 12, characterized in that: In step S8, when the external pitch drive mechanism rotates, it drives the dynamic balance counterweight block (11-3) to rotate in the opposite direction through the dynamic balance counterweight transmission gear (11-1), thereby counteracting the overturning torque caused by the change in the posture of the main arm and the manned frame.

15. The method of using a high-altitude cantilever work platform with dynamic balancing counterweight according to claim 12, characterized in that: The second driven gear mounting keyway (60-1-2) on the stepped mounting shaft (60-1) of the main boom base is used to connect with the driven gear of the external pitch drive system to transmit driving torque.

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