Adaptive stable regulation arm type aerial work equipment and gravity center balancing mechanism thereof

Abstract

The application discloses an adaptive stable adjusting arm type aerial work equipment and a gravity center balancing mechanism thereof, and relates to the technical field of aerial work equipment. The aerial work equipment comprises the gravity center balancing mechanism, wherein the counterweight is movably arranged on a rotating platform in a horizontal direction, and a transmission wheel unit is arranged on the rotating platform; a driving wheel is fixed to a first end of a luffing oil cylinder, and the rotation center line of the driving wheel coincides with the rotation center line of the first end of the luffing oil cylinder; the first ends of first and second flexible traction members are both fixed to the driving wheel, the second ends of the first and second flexible traction members are both fixed to the counterweight, and the first and second flexible traction members both pass the driving wheel and the transmission wheel unit in sequence; the first and second flexible traction members can be wound on the driving wheel in opposite directions, so that the first and second flexible traction members pull the counterweight to move forward when the boom leans backward and pull the counterweight to move backward when the boom leans forward, and the response speed of dynamic load compensation is improved without significantly increasing the volume of the whole machine.

Description

Technical Field

[0001] This application relates to the field of aerial work platform technology, and more specifically, to an adaptive stabilizing adjustable boom aerial work platform and its center of gravity balancing mechanism. Background Technology

[0002] Stability is a core performance characteristic of boom lifts. Traditional designs typically improve overall stability by increasing the counterweight mass. Two specific solutions exist: First, using independently configured hydraulic cylinders and their associated electro-hydraulic valves as drive units to achieve counterweight displacement, with control logic relying on real-time feedback from multiple sensors for closed-loop adjustment; second, employing a four-bar linkage luffing mechanism to achieve adaptive counterweight displacement. While both solutions do improve stability, the first solution is limited by the response speed and control precision of the electro-hydraulic system, making it difficult to meet dynamic load compensation requirements, while the second solution significantly increases the overall machine size.

[0003] In summary, how to provide a solution for improving overall system stability without significantly increasing the overall size and with high dynamic load compensation response speed is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an adaptive stabilizing adjustable boom aerial work platform and its center of gravity balancing mechanism, which can quickly achieve dynamic load compensation without significantly increasing the overall size of the machine.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An adaptive stabilizing adjustable boom aerial work platform includes a turntable, a boom, and a luffing cylinder. The boom is mounted on the turntable, and the first end of the luffing cylinder is rotatably connected to the turntable, while the second end of the luffing cylinder is rotatably connected to the boom for driving the boom to pitch. The platform also includes a center-of-gravity balancing mechanism, comprising a counterweight, a drive wheel, a transmission wheel unit, a first flexible traction component, and a second flexible traction component.

[0007] The counterweight is movably mounted on the turntable in the horizontal direction, and the transmission wheel unit is mounted on the turntable;

[0008] The drive wheel is fixed to the first end of the luffing cylinder, and the rotation center line of the drive wheel coincides with the rotation center line of the first end of the luffing cylinder.

[0009] The first end of the first flexible traction member and the first end of the second flexible traction member are both fixed to the drive wheel, and the second end of the first flexible traction member and the second flexible traction member are both fixed to the counterweight. The first flexible traction member and the second flexible traction member pass around the drive wheel and the transmission wheel unit in sequence.

[0010] The first flexible traction member and the second flexible traction member can be wound around the drive wheel in opposite directions, such that the first flexible traction member pulls the counterweight forward when the boom tilts backward, and the second flexible traction member pulls the counterweight backward when the boom tilts forward.

[0011] Preferably, the drive wheel has a first groove and a second groove, and both the first groove and the second groove are annular grooves extending around the center line of the drive wheel itself. The first flexible traction member is wound around the first groove, and the second flexible traction member is wound around the second groove.

[0012] Preferably, the center of gravity balancing mechanism further includes a first connecting seat, a second connecting seat, a first nut component, and a second nut component;

[0013] Both the first connecting seat and the second connecting seat are located on the drive wheel;

[0014] The first flexible traction member passes through the first connecting seat, and the first nut member is threadedly connected to the first end of the first flexible traction member;

[0015] The second flexible traction member passes through the second connecting seat, and the second nut member is threadedly connected to the first end of the second flexible traction member.

[0016] Preferably, the transmission wheel unit includes a first fixed pulley and a second fixed pulley, both of which are rotatably mounted on the turntable;

[0017] The counterweight is horizontally movable and positioned between the first fixed pulley and the second fixed pulley;

[0018] The first flexible traction member passes sequentially around the drive wheel, the first fixed pulley, and the second fixed pulley, and the second end of the first flexible traction member is fixed to the end of the counterweight near the second fixed pulley.

[0019] Preferably, the second flexible traction member passes sequentially around the drive wheel and the first fixed pulley, and the second end of the second flexible traction member is fixed to the end of the counterweight near the first fixed pulley.

[0020] Preferably, the first fixed pulley has the first groove and the second groove, and the second fixed pulley has the first groove;

[0021] The first flexible traction member sequentially passes around the first groove of the drive wheel, the first fixed pulley, and the second fixed pulley;

[0022] The second flexible traction member sequentially passes around the second groove of the drive wheel and the first fixed pulley;

[0023] The guide center lines of several first slides are coplanar, and the guide center lines of several second slides are coplanar.

[0024] Preferably, the number of groups of the drive wheel, the transmission wheel unit, the first flexible traction member and the second flexible traction member is at least two, and the groups of the drive wheel, the transmission wheel unit, the first flexible traction member and the second flexible traction member are symmetrically arranged about the center plane of the turntable in the width direction.

[0025] Preferably, the drive wheel is located between the first fixed pulley and the second fixed pulley.

[0026] Preferably, both the first flexible traction member and the second flexible traction member are steel wire ropes.

[0027] A center of gravity balancing mechanism, wherein the center of gravity balancing mechanism is the center of gravity balancing mechanism in the adaptive stabilizing adjustable boom aerial work platform described in any of the above claims.

[0028] In this application, the upper hinge point of the luffing cylinder is connected to the boom, and the lower hinge point is connected to the turntable. Thus, the extension and retraction of the luffing cylinder can push the boom to pitch, thereby enabling the boom to perform up and down luffing movements.

[0029] To complement this, a center-of-gravity balancing mechanism is also provided to meet the dynamic load compensation requirements during boom luffing operations. A track structure is installed on the turntable, allowing the counterweight to move horizontally back and forth. This mechanism links the luffing cylinder and the counterweight, enabling synchronous translation of the counterweight when the luffing cylinder is in operation, thereby improving the automatic stability of the equipment. A drive wheel is rigidly connected at the lower hinge point of the luffing cylinder, and the rotation center line of the drive wheel is collinear with the rotation center line of the first end of the luffing cylinder. This ensures that the rotational angular velocity of the drive wheel is equal to the rotational angular velocity at the lower hinge point of the luffing cylinder. The first ends of both the first and second flexible traction components are connected to the drive wheel, and the second ends are connected to the counterweight. Furthermore, a transmission wheel unit is provided on the turntable for the first and second flexible traction components to pass over.

[0030] The first and second flexible traction components can wrap around the drive wheel in opposite directions. For example, assuming the luffing cylinder extends and drives the drive wheel to rotate in the forward direction, the first flexible traction component will... Figure 3The first flexible traction component is wound and fixed to the drive wheel in a counterclockwise direction, while the second flexible traction component gradually releases from the drive wheel. This causes the luffing cylinder to shorten, driving the drive wheel to rotate in the opposite direction. The first flexible traction component will then... Figure 3 The cable is wound and fixed to the drive wheel in a clockwise direction, and the first flexible traction component is gradually released from the drive wheel. This allows the cable to pull the counterweight forward when the boom tilts backward, and the second flexible traction component to pull the counterweight backward when the boom tilts forward. Thus, this adaptive stabilizing adjustable boom aerial work platform can quickly achieve dynamic load compensation without significantly increasing the overall size of the machine. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a specific embodiment provided in this application;

[0033] Figure 2 This is a partially enlarged schematic diagram of a specific embodiment provided in this application;

[0034] Figure 3 This is a schematic diagram of the variable amplitude rise working condition of a specific embodiment provided in this application;

[0035] Figure 4 This is a schematic diagram of the variable amplitude descent working condition of a specific embodiment provided in this application;

[0036] Figure 5 This is a schematic diagram illustrating the computational symbols used in specific embodiments provided in this application.

[0037] Figure label:

[0038] 1-Turntable; 2-Boom; 3-Luffing cylinder; 4-Center for gravity balancing mechanism; 40-Counterweight; 41-Drive wheel; 42-First fixed pulley; 43-Second fixed pulley; 44-First flexible traction component; 45-Second flexible traction component; 46-First connecting seat; 47-Second connecting seat; 48-First nut component; 49-Second nut component. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The core of this application is to provide an adaptive stabilizing adjustable boom aerial work platform and its center of gravity balancing mechanism, which can quickly achieve dynamic load compensation without significantly increasing the overall size of the machine.

[0041] This application provides an adaptive stabilizing adjustable boom aerial work platform, including a turntable 1, a boom 2, and a luffing cylinder 3. The boom 2 is mounted on the turntable 1. The first end of the luffing cylinder 3 is rotatably connected to the turntable 1, and the second end of the luffing cylinder 3 is rotatably connected to the boom 2 for driving the boom 2 to pitch. It also includes a center-of-gravity balancing mechanism 4, which includes a counterweight 40, a drive wheel 41, a transmission wheel unit, a first flexible traction member 44, and a second flexible traction member 45. The counterweight 40 is movably mounted on the turntable 1 in the horizontal direction, and the transmission wheel unit is mounted on the turntable 1. The drive wheel 41 is fixed to the first end of the luffing cylinder 3, and the rotation center line of the drive wheel 41 is parallel to the luffing cylinder 3. The rotation center lines of the first end of the hydraulic cylinder 3 coincide; the first end of the first flexible traction member 44 and the first end of the second flexible traction member 45 are both fixed to the drive wheel 41, and the second end of the first flexible traction member 44 and the second end of the second flexible traction member 45 are both fixed to the counterweight 40. The first flexible traction member 44 and the second flexible traction member 45 pass around the drive wheel 41 and the transmission wheel unit in sequence. The first flexible traction member 44 and the second flexible traction member 45 can wrap around the drive wheel 41 in opposite directions, so that the first flexible traction member 44 pulls the counterweight 40 forward when the boom 2 tilts backward, and the second flexible traction member 45 pulls the counterweight 40 backward when the boom 2 tilts forward.

[0042] refer to Figure 1 As explained, the upper hinge point of the luffing cylinder 3 is connected to the boom 2, and the lower hinge point is connected to the turntable 1. Thus, the extension and retraction of the luffing cylinder 3 can push the boom 2 to pitch, enabling the boom 2 to perform up and down luffing movements.

[0043] To complement this, a center of gravity balancing mechanism 4 is also provided to meet the dynamic load compensation requirements during the boom 2's up-and-down luffing movements. A track structure is installed on the turntable 1, allowing the counterweight 40 to move horizontally back and forth. This is to link the luffing cylinder 3 and the counterweight 40, enabling the counterweight 40 to move synchronously when the luffing cylinder 3 is in use, thereby improving the automatic stability of the equipment. A drive wheel 41 is rigidly connected at the lower hinge point of the luffing cylinder 3, and the rotation center line of the drive wheel 41 is collinear with the rotation center line of the first end of the luffing cylinder 3, ensuring that the rotational angular velocity of the drive wheel 41 is equal to the rotational angular velocity at the lower hinge point of the luffing cylinder 3. The first ends of the first flexible traction member 44 and the second flexible traction member 45 are both connected to the drive wheel 41, and the second ends are both connected to the counterweight 40. Furthermore, a transmission wheel unit is provided on the turntable 1 for the first flexible traction member 44 and the second flexible traction member 45 to pass over.

[0044] The first flexible traction member 44 and the second flexible traction member 45 can be wound around the drive wheel 41 in opposite directions. For example, assuming the luffing cylinder 3 extends and drives the drive wheel 41 to rotate in the forward direction, the first flexible traction member 44 will... Figure 3 The first flexible traction member 44 is wound and fixed to the drive wheel 41 in a counterclockwise direction, and the second flexible traction member 45 will gradually release from the drive wheel 41. When the luffing cylinder 3 shortens and drives the drive wheel 41 to rotate in the opposite direction, the first flexible traction member 44 will... Figure 3 The cable is wound and fixed clockwise around the drive wheel 41, while the first flexible traction member 44 is gradually released from the drive wheel 41. This allows the cable to pull the counterweight 40 forward when the boom 2 tilts backward, and the second flexible traction member 45 to pull the counterweight 40 backward when the boom 2 tilts forward. Thus, the adaptive stabilizing adjustable boom aerial work platform can achieve real-time reverse coupling motion between the center of gravity balance mechanism 4 and the boom 2 without increasing the overall size and mass parameters. This achieves simultaneous improvement of the overall forward tilt stability margin and backward tilt stability margin. Furthermore, the center of gravity balance mechanism 4 configured in the adaptive stabilizing adjustable boom aerial work platform adopts a self-adjusting technology, completely eliminating the dependence on electrical sensors, hydraulic valve groups, or cylinders. It can still ensure basic stability in extreme scenarios, meaning that it has higher reliability and feasibility compared to related technologies.

[0045] The luffing and rising process is detailed below. Under this condition, the second flexible traction component 45 is in a relaxed state. To better illustrate the working process of the luffing and rising state... Figure 3The second flexible traction component 45 is concealed, and the luffing cylinder 3 extends, pushing the boom 2 to tilt upwards. The center of gravity of the boom 2 and the working platform moves to the rear and upper part of the machine. As the working radius increases, the tilting moment to the rear gradually increases. At the same time, the luffing cylinder 3 drives the drive wheel 41 to rotate clockwise. The first flexible traction component 44 pulls the movable counterweight 40 forward through the transmission wheel unit, increasing its backward tilting stabilizing moment to balance the increased backward tilting moment of the boom 2 and the working platform during the luffing process. Thus, under conditions of greater working height and working radius, the adaptive stabilizing boom-type aerial work platform can achieve automatic stabilization under safe working conditions.

[0046] The luffing descent process is detailed below. Under this condition, the first flexible traction component 44 is in a relaxed state. To better illustrate the working process of the luffing descent state... Figure 4 The first flexible traction component 44 is concealed, and the luffing cylinder 3 extends, pushing the boom 2 to tilt downwards. The center of gravity of the boom 2 and the working platform moves forward. As the working radius increases, the tilting torque to the forward side gradually increases. At the same time, the luffing cylinder 3 drives the drive wheel 41 to rotate counterclockwise. The second flexible traction component 45 pulls the movable counterweight 40 to the rear through the transmission wheel unit, increasing its forward tilting stabilizing torque to balance the increased forward tilting torque of the boom 2 and the working platform during the luffing process. Thus, under conditions of lower working height and working radius, the adaptive stabilizing boom-type aerial work platform can achieve automatic stabilization under safe working conditions.

[0047] refer to Figure 2 As can be seen, based on the above embodiment, the drive wheel 41 has two parallel sliding grooves extending along its circumference, namely the first sliding groove and the second sliding groove. The first flexible traction member 44 can be wound in the first sliding groove, and the second flexible traction member 45 can be wound in the second sliding groove. This arrangement can prevent the first flexible traction member 44 and the second flexible traction member 45 from affecting each other, and at the same time, it is beneficial to reduce the structural volume.

[0048] refer to Figure 2 As explained above, based on the above embodiment, a protruding structure is provided at the middle position of the length of the first groove as a first connecting seat 46, and a through hole extending in the tangential direction is provided on the first connecting seat 46 for the first flexible traction member 44 to pass through. The first end of the first flexible traction member 44 has a threaded rope segment, which refers to a rope segment with external threads. The first nut is sleeved on the outside of the threaded rope segment at the first end of the first flexible traction member 44 and engages with its threads, so that the tightness of the first flexible traction member 44 can be adjusted by adjusting the first nut.

[0049] Similarly, refer to Figure 2As explained, a protruding structure is provided at the middle position of the second groove as a second connecting seat 47, and a through hole extending in the tangential direction is provided on the second connecting seat 47 for the second flexible traction member 45 to pass through. The second end of the second flexible traction member 45 has a threaded rope segment, and the second nut 49 is sleeved on the outside of the threaded rope segment at the second end of the second flexible traction member 45 and threadedly engaged with it, so that the tightness of the second flexible traction member 45 can be adjusted by adjusting the second nut 49.

[0050] refer to Figure 1 and Figure 3 As explained above, based on the above embodiment, the transmission wheel unit includes a first fixed pulley 42 and a second fixed pulley 43. Both the first fixed pulley 42 and the second fixed pulley 43 are rotatably mounted on the turntable 1, with the first fixed pulley 42 located on the front side and the second fixed pulley 43 located on the rear side. The counterweight 40 is horizontally movable and positioned between the first fixed pulley 42 and the second fixed pulley 43. Correspondingly, the first flexible traction member 44 extends from the first end to the second end in the following manner: after extending from the drive wheel 41, it extends rearward toward the first fixed pulley 42; after winding around the first fixed pulley 42, it extends forward toward the second fixed pulley 43; and after winding around the second fixed pulley 43, it extends rearward toward the counterweight 40, so as to be easily connected to the front end of the counterweight 40.

[0051] In some preferred embodiments, in conjunction with a fixed pulley, both the first flexible traction member 44 and the second flexible traction member 45 are steel wire ropes.

[0052] refer to Figure 1 and Figure 4 As can be seen, based on the above embodiment, the extension state of the second flexible traction member 45 from the first end to the second end is such that after extending from the drive wheel 41, it extends to the rear side toward the first fixed pulley 42, and after winding around the first fixed pulley 42, it extends to the front side toward the counterweight 40, so that it can be easily connected to the rear end of the counterweight 40.

[0053] Of course, the composition of the transmission wheel unit is not limited to the above embodiments. As long as it can meet the requirement that the first flexible traction member 44 is connected to the front end of the counterweight 40 and the second flexible traction member 45 is connected to the rear end of the counterweight 40, for example, several fixed pulleys can be added to realize multiple changes in direction of the first flexible traction member 44 or the second flexible traction member 45, and the extension direction of the second end of the first flexible traction member 44 and the second end of the second flexible traction member 45 can be as disclosed in the above embodiments.

[0054] refer to Figure 2To illustrate, based on the above embodiments, in an embodiment where the transmission wheel unit includes a first fixed pulley 42 and a second fixed pulley 43, the first fixed pulley 42 also has two parallel sliding grooves extending circumferentially, namely the first sliding groove and the second sliding groove. The first flexible traction member 44 can be wound around the first sliding groove of the first fixed pulley 42, while the second flexible traction member 45 can be wound around the second sliding groove. The second fixed pulley 43 has only one sliding groove extending circumferentially, namely the first sliding groove, and the first flexible traction member 44 can be wound around the first sliding groove of the second fixed pulley 43. In summary, the first flexible traction member 44 sequentially passes around the first sliding groove of the drive wheel 41, the first fixed pulley 42, and the second fixed pulley 43; the second flexible traction member 45 sequentially passes around the second sliding groove of the drive wheel 41 and the first fixed pulley 42.

[0055] The guide center lines of several first slide grooves are coplanar, that is, located in the same vertical plane, and the guide center lines of several second slide grooves are coplanar, that is, located in the same vertical plane, so as to effectively avoid the lateral deviation and wear of the first flexible traction member 44 and the second flexible traction member 45.

[0056] To ensure the smooth movement of the movable counterweight 40, based on the above embodiment, at least two sets of drive wheel 41, transmission wheel unit, first flexible traction member 44 and second flexible traction member 45 are arranged symmetrically in parallel to each other in the width direction of turntable 1, and all are connected to the counterweight 40.

[0057] refer to Figure 1 As can be seen, based on the above embodiment, the drive wheel 41 is located between the first fixed pulley 42 and the second fixed pulley 43. This arrangement helps to reduce the structural volume.

[0058] It should be noted that the drive wheel 41 and the wheel of the transmission wheel unit are not limited to the pulleys mentioned above, and the first flexible traction member 44 and the second flexible traction member 45 that cooperate with them are not limited to the wire ropes mentioned above. As long as the dynamic load compensation function can be achieved, it is acceptable. For example, in some embodiments, the drive wheel 41 and the wheel of the transmission wheel unit are sprockets, and the first flexible traction member 44 and the second flexible traction member 45 that cooperate with them are chains.

[0059] In summary, during the amplitude variation process, refer to Figure 5 As explained, taking the three-hinged boom 2 as an example, the calculation method for the distance L that the counterweight 40 moves is as follows:

[0060] ;

[0061] Where R is the radius of the drive wheel 41;

[0062] This is the distance between the hinge point of boom 2 and the upper hinge point of luffing cylinder 3;

[0063] This is the distance between the hinge point of boom 2 and the lower hinge point of luffing cylinder 3;

[0064] When boom 2 is in its lowest position, the angle between the line connecting the hinge point of boom 2 and the upper hinge point of luffing cylinder 3 and the line connecting the hinge point of boom 2 and the lower hinge point of luffing cylinder 3.

[0065] The boom has two luffing angles.

[0066] From the lowest to the maximum boom angle For example, the distance the counterweight moves is 40. The calculation method is as follows:

[0067] ;

[0068] The stabilizing torque increases due to the movement of counterweight 40 during the amplitude change process. The calculation method is as follows:

[0069] ;

[0070] Where m is the mass of the counterweight 40.

[0071] In addition to the aforementioned adaptive stabilizing adjustable boom aerial work platform, this application also provides a center of gravity balancing mechanism included in the adaptive stabilizing adjustable boom aerial work platform disclosed in the above embodiments. For details of the center of gravity balancing mechanism, please refer to the relevant content of the above embodiments.

[0072] It should be noted that the relational terms such as "first" and "second" mentioned above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities; the terms "upper surface, lower surface, top, bottom" and the directional terms "upper, lower, left, right" mentioned above are defined based on the accompanying drawings in the specification.

[0073] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0074] The adaptive stabilizing adjustable boom aerial work platform and its center of gravity balancing mechanism (4) provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. An adaptive stabilizing adjustable boom aerial work platform, comprising a turntable (1), a boom (2), and a luffing cylinder (3), wherein the boom (2) is mounted on the turntable (1), the first end of the luffing cylinder (3) is rotatably connected to the turntable (1), and the second end of the luffing cylinder (3) is rotatably connected to the boom (2), for driving the boom (2) to pitch; characterized in that, Also includes: The center of gravity balancing mechanism (4) includes a counterweight (40), a drive wheel (41), a transmission wheel unit, a first flexible traction member (44), and a second flexible traction member (45). The counterweight (40) is movably disposed on the turntable (1) in the horizontal direction, and the transmission wheel unit is disposed on the turntable (1). The drive wheel (41) is fixed to the first end of the luffing cylinder (3), and the rotation center line of the drive wheel (41) coincides with the rotation center line of the first end of the luffing cylinder (3). The first end of the first flexible traction member (44) and the first end of the second flexible traction member (45) are both fixed to the drive wheel (41), and the second end of the first flexible traction member (44) and the second end of the second flexible traction member (45) are both fixed to the counterweight (40). The first flexible traction member (44) and the second flexible traction member (45) pass around the drive wheel (41) and the transmission wheel unit in sequence. The first flexible traction member (44) and the second flexible traction member (45) can be wound around the drive wheel (41) in opposite directions, such that the first flexible traction member (44) pulls the counterweight (40) forward when the boom (2) tilts backward, and the second flexible traction member (45) pulls the counterweight (40) backward when the boom (2) tilts forward.

2. The adaptive stabilizing adjustable boom aerial work platform according to claim 1, characterized in that, The drive wheel (41) has a first groove and a second groove, and the first groove and the second groove are both annular grooves extending around the center line of the drive wheel (41). The first flexible traction member (44) is wrapped around the first groove, and the second flexible traction member (45) is wrapped around the second groove.

3. The adaptive stabilizing adjustable boom aerial work platform according to claim 1, characterized in that, The center of gravity balancing mechanism (4) further includes a first connecting seat (46), a second connecting seat (47), a first nut and (48) a second nut (49); The first connecting seat (46) and the second connecting seat (47) are both located on the drive wheel (41). The first flexible traction member (44) passes through the first connecting seat (46), and the first nut is threadedly connected to the first end of the first flexible traction member (44); The second flexible traction member (45) passes through the second connecting seat (47), and the second nut member (49) is threaded to the first end of the second flexible traction member (45).

4. The adaptive stabilizing adjustable boom aerial work platform according to claim 2, characterized in that, The transmission wheel unit includes a first fixed pulley (42) and a second fixed pulley (43), both of which are rotatably mounted on the turntable (1). The counterweight (40) is horizontally movable between the first fixed pulley (42) and the second fixed pulley (43); The first flexible traction member (44) passes around the drive wheel (41), the first fixed pulley (42) and the second fixed pulley (43) in sequence, and the second end of the first flexible traction member (44) is fixed to the end of the counterweight (40) near the second fixed pulley (43).

5. The adaptive stabilizing adjustable boom aerial work platform according to claim 4, characterized in that, Both the first flexible traction member (44) and the second flexible traction member (45) are steel wire ropes.

6. The adaptive stabilizing adjustable boom aerial work platform according to claim 4, characterized in that, The second flexible traction member (45) passes around the drive wheel (41) and the first fixed pulley (42) in sequence, and the second end of the second flexible traction member (45) is fixed to the end of the counterweight (40) near the first fixed pulley (42).

7. The adaptive stabilizing adjustable boom aerial work platform according to claim 6, characterized in that, The first fixed pulley (42) has the first groove and the second groove, and the second fixed pulley (43) has the first groove; The first flexible traction member (44) passes sequentially around the first groove of the drive wheel (41), the first fixed pulley (42) and the second fixed pulley (43); The second flexible traction member (45) passes sequentially around the second groove of the drive wheel (41) and the first fixed pulley (42); The guide center lines of several first slides are coplanar, and the guide center lines of several second slides are coplanar.

8. The adaptive stabilizing adjustable boom aerial work platform according to any one of claims 1-7, characterized in that, The number of groups of the drive wheel (41), the transmission wheel unit, the first flexible traction member (44) and the second flexible traction member (45) is at least two, and the groups of the drive wheel (41), the transmission wheel unit, the first flexible traction member (44) and the second flexible traction member (45) are symmetrically arranged about the width of the turntable (1).

9. The adaptive stabilizing adjustable boom aerial work platform according to any one of claims 4-7, characterized in that, The drive wheel (41) is located between the first fixed pulley (42) and the second fixed pulley (43).

10. A center-of-gravity balancing mechanism, characterized in that, The center of gravity balancing mechanism is the center of gravity balancing mechanism (4) in the adaptive stabilizing adjustable boom aerial work equipment as described in any one of claims 1-9.

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