A three-link boom stabilization structure for aerial work platforms

Abstract

This invention relates to the field of aerial work platform equipment technology, specifically to a three-link boom stabilization structure for aerial work platforms. The structure includes a work bucket, a three-link boom, and a base assembly assembly. The base assembly assembly includes an assembly frame, a rotating disk, and a fixed base. The assembly frame has a mounting plate inserted into it. The outer wall of the rotating disk has an annular limiting groove and an annular abutment groove. A connecting column is located at the lower end of the rotating disk. Multiple sets of locking blocks are located inside the fixed base. A cooperating support block is provided on the fixed base, and an auxiliary support arm is provided on the cooperating support block. The end of the auxiliary support arm is engaged in the annular limiting groove. An L-shaped fastening block is provided on the cooperating support block. One end of the L-shaped fastening block is connected to a driven component, and the other end is engaged in the annular abutment groove. This invention can adaptively provide auxiliary limiting support in different states according to changes in the equipment's center of gravity, ensuring the stability of the three-link boom during dynamic adjustments.

Description

Technical Field

[0001] This invention relates to the field of aerial work platform equipment technology, specifically a three-link boom stabilization structure for aerial work platforms. Background Technology

[0002] With the increasing demand for aerial work and the growing complexity of working environments, improving the stability and safety of aerial work platforms has become particularly important. The three-link boom, as a new type of boom structure, is gradually being applied to the field of articulated boom lifts. The design principle of the three-link boom involves setting three independent connecting rods on the boom. Through reasonable geometric design, the stability of the boom under various working conditions can be effectively improved. Furthermore, the simplified design of the three-link structure also helps to reduce manufacturing costs and improve the overall performance of the equipment.

[0003] Existing aerial work platforms, when operating on building facades or complex terrain, primarily rely on the vehicle body to rotate the entire structure, allowing the three-link boom to more flexibly avoid obstacles and complete the work. While this method is relatively effective, it also has several drawbacks. First, overall rotation can cause a shift in the equipment's center of gravity, especially on uneven ground or slopes, potentially leading to instability and increasing the risk of tipping over. Second, overall rotation can increase operational complexity, particularly in confined spaces or areas with numerous obstacles, requiring operators to possess higher skills to control the rotation and movement of the three-link boom. Furthermore, ensuring accurate positioning of the boom and vehicle body is difficult, potentially leading to accidental collisions with obstacles or buildings during operation. Although some technologies have proposed incorporating a rotating shaft at the top of the boom base, with the three-link boom fixed to this shaft via bearings, this design, while ensuring relatively smooth 360-degree rotation, only guarantees static stability under normal conditions, not stability during rotational adjustments. Summary of the Invention

[0004] The purpose of this invention is to provide a three-link boom stabilization structure for aerial work platforms to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a three-link boom stabilization structure for an aerial work platform, comprising, from top to bottom, a work bucket, a three-link boom, and a base assembly assembly. The base assembly assembly comprises, in sequence, an assembly frame connected to the three-link boom, a rotating disk, and a fixed base connected to the vehicle body. A mounting plate is inserted through the assembly frame on both sides, and the mounting plate is pushed by a first pushing component to move linearly left and right, used to assist in adjusting the center of gravity position of the three-link boom. The outer wall of the rotating disk is provided with an annular limiting groove and an annular abutment groove from top to bottom. The upper end of the rotating disk is fixedly connected to the assembly frame, and the lower end of the rotating disk protrudes with a connecting column extending into the fixed base. The connecting column is driven by a driving component and rotates within the fixed base.

[0006] The fixed base is internally equipped with a locking assembly for pressing the connecting column. The locking assembly includes multiple sets of locking blocks arranged in a circular array. These locking blocks are driven by a second pushing assembly to move radially synchronously. The upper end of the outer wall of the fixed base has a number of mating support blocks that are the same number as the locking blocks. Each set of mating support blocks is rotatably mounted with an auxiliary support arm. The auxiliary support arm is driven by a linkage assembly and performs a 145° linear up-and-down flipping motion. When the auxiliary support arm flips upward, it is locked in the annular limiting groove, which serves to limit the upper and lower movement of the rotating disk. When the auxiliary support arm flips downward, its bottom is flush with the bottom surface of the mounting outer edge, which further increases the bottom support area of ​​the fixed base.

[0007] Furthermore, each set of supporting blocks is equipped with a set of L-shaped fastening blocks that are slidably installed in a limited manner. One end of the L-shaped fastening block is connected to the driven component, and the other end of the L-shaped fastening block is engaged in the annular clamping groove to further enhance the connection stability between the rotating disk and the fixed base. Both the driven component and the linkage component are powered by the second pushing component.

[0008] Preferably, the locking blocks are provided in no less than six sets. The second pushing component includes a driving ring, an internal gear ring, a spur gear, and a second motor. The driving ring is rotatably mounted in the fixed base. An internal gear ring is fixedly provided on the inner side wall of the driving ring. The internal gear ring is meshed with the spur gear. The spur gear is coaxially fixedly connected to the output shaft of the second motor.

[0009] Preferably, the driving ring has the same number of arc-shaped slots as the locking blocks, and a cylindrical pin is inserted into each set of arc-shaped slots. Each cylindrical pin is fixedly connected to a set of locking blocks, and the end of the locking block near the connecting post is set as an arc surface.

[0010] Preferably, the upper end of the locking block is connected to the driven component, which includes a driving rack, a steering wheel, and a driven toothed plate. One end of the driving rack is fixedly connected to the locking block, and the other end of the driving rack extends into the mating support block and is engaged with the steering wheel. The steering wheel is rotatably mounted in the mating support block, and the end of the steering wheel away from the driving rack is engaged with the driven toothed plate. The end of the driven toothed plate away from the steering wheel is connected to the linkage component.

[0011] Preferably, the lower end of the L-shaped fastening block is fixedly connected to the active rack, and the opening of the lower end face of the annular clamping groove is set in an inclined shape.

[0012] Preferably, the linkage component includes a linkage rack and a driven wheel. The driven wheel is rotatably mounted in the mating support block and meshes with the linkage rack. The linkage rack is slidably mounted in the mating support block and fixedly connected to the driven gear plate. One end of the auxiliary support arm is coaxially fixedly connected to the driven wheel, and a roller is rotatably mounted on the other end of the auxiliary support arm.

[0013] Preferably, the bottom of the middle part of the auxiliary support arm is set as a horizontal plane, and a damping pad is fixedly adhered to the horizontal plane.

[0014] Preferably, the lower end of the outer wall of the fixed base is fixedly provided with an installation outer edge, and a plurality of fixing bolts are provided on the installation outer edge at intervals from the auxiliary support arm; the drive assembly includes a worm gear, a worm shaft and a lateral motor, the worm shaft is horizontally placed in the fixed base and fixedly connected to the output shaft of the lateral motor, and the worm gear is fixedly sleeved on the connecting column and meshed with the worm shaft.

[0015] Preferably, the mounting plate is slidably and limit-mounted within the assembly frame. The first pushing component includes a translation bar, a rotating screw, and a first motor. The rotating screw is slidably and limit-mounted within the assembly frame and fixedly connected to the first motor. The translation bar is slidably and limit-mounted within the assembly frame, and its interior passes through an internal threaded hole that mates with the rotating screw.

[0016] Preferably, the lower end of the translation bar protrudes from two parallel vertical push columns, the mounting plate is provided with a double-track inclined groove to accommodate the vertical push columns, and counterweights are provided at both the left and right ends of the bottom of the mounting plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention uses an adjustable base composed of an assembly frame, a rotating disk, a fixed base, and connecting columns to support a three-bar linkage boom. This not only allows for smooth 360-degree rotation of the three-bar linkage boom, but also, through the coordinated use of multiple sets of auxiliary support arms and a mounting plate, can adaptively provide auxiliary limit support in different states according to changes in the equipment's center of gravity. This ensures that the three-bar linkage boom remains balanced during dynamic adjustments, effectively reducing possible swaying and shaking of the boom during operation and improving the stability of the entire structure.

[0019] 2. By setting up a drive ring, internal gear ring, and spur gear to work together, the rotational motion of the No. 2 motor can be converted into the synchronous radial motion of multiple sets of locking blocks. This is used to tighten or loosen the connecting column, which not only ensures the normal rotational adjustment of the three-link boom, but also allows for quick locking and fixing of the connecting column when the equipment stops rotating axially, ensuring the static stability of the three-link boom.

[0020] 3. By setting up an active rack, a steering wheel, and a driven toothed plate for coordinated use, the L-shaped fastening block can move radially together with the locking block. This allows the locking block to lock and limit the connecting column on the inner side, while the L-shaped fastening block quickly squeezes the inclined surface of the annular pressing groove and inserts into the groove. This achieves external pressing and limiting of the rotating disk. The double limiting structure, both internal and external, effectively enhances the stability of the three-link boom structure.

[0021] 4. By setting rollers as the support for the auxiliary support arm and making contact with the annular limiting groove, sliding friction is converted into rolling friction, resulting in a low coefficient of friction and thus reducing mechanical wear. Furthermore, the auxiliary support arm is engaged in the annular limiting groove to limit the upper and lower positions of the rotating disk, effectively counteracting the instability caused by the shift of the center of gravity when the rotating disk rotates axially, thereby enhancing the overall safety of the equipment. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the present invention from another perspective.

[0024] Figure 3 This is a schematic diagram showing the state in which the assembly frame and rotating disk of the present invention cannot rotate axially.

[0025] Figure 4 This is a schematic diagram showing the state in which the assembly frame and rotating disk of the present invention can rotate axially.

[0026] Figure 5 This is a schematic diagram of the assembly frame, mounting plate, rotating disk, fixed base, and mounting outer edge of the present invention.

[0027] Figure 6This is a cross-sectional view of the rotating disk and the fixed base of the present invention.

[0028] Figure 7 This is a cross-sectional schematic diagram of the rotating disk and fixed base of the present invention from another perspective.

[0029] Figure 8 For the present invention Figure 7 An enlarged schematic diagram of region A in the middle.

[0030] Figure 9 This is a schematic diagram of the connecting column, driving component, auxiliary support arm, and linkage component of the present invention.

[0031] Figure 10 This is a schematic diagram of the second driving component, the linkage component, and the driven component of the present invention.

[0032] Figure 11 This is a schematic diagram of the auxiliary support arm, linkage component, and driven component of the present invention.

[0033] In the diagram: 1. Three-link boom; 2. Working bucket; 3. Assembly frame; 4. Rotary disc; 401. Annular limiting groove; 402. Annular clamping groove; 5. Fixed base; 501. Matching support block; 6. Mounting outer edge; 7. Fixing bolt; 8. Mounting plate; 801. Double-track inclined groove; 9. Counterweight; 10. Vertical push column; 11. Translation bar; 12. Rotating screw; 13. Motor No. 1; 14. 15. Connecting column; 16. Turbine; 17. Worm gear; 18. Locking block; 19. Cylindrical pin; 20. Drive ring; 21. Arc groove; 22. Internal gear ring; 23. Spur gear; 24. No. 2 motor; 25. Drive rack; 26. L-shaped fastening block; 27. Steering wheel; 28. Driven gear plate; 29. ​​Linkage rack; 30. Driven wheel; 31. Auxiliary support arm; 32. Damping pad; 33. Roller. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1 to 11This invention provides a technical solution: a stabilizing structure for a three-link boom 1 used in aerial work platforms, comprising, from top to bottom, a work bucket 2, a three-link boom 1, and a base assembly assembly. The base assembly assembly comprises, in sequence, an assembly frame 3 connected to the three-link boom 1, a rotating disk 4, and a fixed base 5 connected to the vehicle body. The upper end of the three-link boom 1 is connected to the work bucket 2, and the lower end of the three-link boom 1 is hinged to the upper end of the assembly frame 3. A mounting plate 8 is inserted through the left and right sides of the assembly frame 3. The mounting plate 8 is formed by the first... A push component drives the arm to move linearly left and right, assisting in adjusting the center of gravity of the three-bar linkage boom 1. The outer wall of the rotating disk 4 has an annular limiting groove 401 and an annular clamping groove 402 sequentially formed from top to bottom. The upper end of the rotating disk 4 is fixedly connected to the mounting frame 3, and the lower end of the rotating disk 4 has a protruding connecting post 14 that extends into the fixed base 5. The connecting post 14 is driven by the drive component and rotates within the fixed base 5. The fixed base 5 contains a locking component for pressing the connecting post 14. The stopping component includes multiple sets of locking blocks 17 arranged in a circular array. These locking blocks 17 are driven radially synchronously by a second pushing component. The upper outer wall of the fixed base 5 protrudes with the same number of mating support blocks 501 as the locking blocks 17. Each set of mating support blocks 501 is rotatably mounted with an auxiliary support arm 30. The auxiliary support arm 30 is driven by a linkage component and performs a 145° linear up-and-down flipping motion. The auxiliary support arm 30 flips upward and engages within the annular limiting groove 401, thus controlling the rotation of the rotating disk 4. The upper and lower limits are used for: the auxiliary support arm 30 flips downward so that its bottom is flush with the bottom surface of the mounting outer edge 6, which is used to further increase the bottom support area of ​​the fixed base 5; and each set of mating support blocks 501 is equipped with a set of L-shaped fastening blocks 25 for limited sliding installation. One end of the L-shaped fastening block 25 is connected to the driven component, and the other end of the L-shaped fastening block 25 is engaged in the annular clamping groove 402, which is used to further enhance the connection stability between the rotating disk 4 and the fixed base 5; the driven component and the linkage component are both powered by the second push component.

[0036] Furthermore, the present invention uses an adjustable base composed of an assembly frame 3, a rotating disk 4, a fixed base 5, and a connecting column 14 to support the three-bar linkage boom 1. This not only allows the three-bar linkage boom 1 to rotate smoothly 1360 degrees, but also, through the cooperation of multiple sets of auxiliary support arms 30 and the mounting plate 8, it can adaptively provide auxiliary limit support in different states according to the changes in the center of gravity of the equipment. This ensures that the three-bar linkage boom 1 remains balanced during dynamic adjustment, effectively reducing the swaying and shaking that may occur during the boom's operation and improving the stability of the entire structure.

[0037] like Figure 9 as well as Figure 10As shown, there are no fewer than six sets of locking blocks 17. The second pushing component includes a driving ring 19, an internal gear ring 21, a spur gear 22, and a second motor 23. The driving ring 19 is rotatably mounted in the fixed base 5. An internal gear ring 21 is fixedly provided on the inner side wall of the driving ring 19. The internal gear ring 21 is meshed with the spur gear 22. The spur gear 22 is coaxially fixedly connected to the output shaft of the second motor 23. The driving ring 19 has the same number of arc-shaped slots 20 as the locking blocks 17. A cylindrical pin 18 is inserted into each set of arc-shaped slots 20. Each cylindrical pin 18 is fixedly connected to a set of locking blocks 17. The end of the locking block 17 near the connecting post 14 is set as an arc surface.

[0038] Furthermore, by setting the drive ring 19, internal gear ring 21, spur gear 22, cylindrical pin 18 and arc groove 20 to work together, the rotational motion of the second motor 23 can be converted into the synchronous radial motion of multiple sets of locking blocks 17, which is used to press or release the connecting column 14. This ensures the normal rotational adjustment of the three-link boom 1, and can also quickly lock and fix the connecting column 14 when the equipment stops axial rotation, ensuring the static stability of the three-link boom 1.

[0039] Specifically, by turning on the second motor 23, it drives the spur gear 22 to rotate. The spur gear 22 acts on the internal gear ring 21, causing the internal gear ring 21 to drive the drive ring 19 to perform circumferential motion. The arc groove 20 on the drive ring 19 acts on the cylindrical pin 18, causing the cylindrical pin 18 to be forced to drive the locking block 17 to move radially.

[0040] like Figure 10 as well as Figure 11 As shown, the upper end of the locking block 17 is connected to the driven component, which includes a driving rack 24, a steering wheel 26, and a driven toothed plate 27. One end of the driving rack 24 is fixedly connected to the locking block 17, and the other end of the driving rack 24 extends into the mating support block 501 and meshes with the steering wheel 26. The steering wheel 26 is rotatably mounted in the mating support block 501. The end of the steering wheel 26 away from the driving rack 24 meshes with the driven toothed plate 27. The end of the driven toothed plate 27 away from the steering wheel 26 is connected to the linkage component. The lower end of the L-shaped fastening block 25 is fixedly connected to the driving rack 24. The opening of the lower end face of the annular abutment groove 402 is set in an inclined shape. The linkage component includes a linkage rack 28 and a driven wheel 29. The driven wheel 29 is rotatably mounted in the mating support block 501 and meshes with the linkage rack 28. The linkage rack 28 is slidably mounted in the mating support block 501 and fixedly connected to the driven toothed plate 27.

[0041] Furthermore, by setting the active rack 24, the steering wheel 26, and the driven toothed plate 27 to work together, the L-shaped fastening block 25 can move radially together with the locking block 17. This allows the locking block 17 to lock and limit the connecting column 14 on the inner side, while the L-shaped fastening block 25 quickly squeezes the inclined surface of the annular pressing groove 402 and inserts into the groove. This achieves external pressing and limiting of the rotating disk 4. The double limiting structure of the inner and outer sides effectively enhances the structural stability of the three-link boom 1.

[0042] Specifically, when the locking block 17 moves toward the auxiliary support frame, the active rack 24 also moves along with it, causing the L-shaped fastening block 25 to be pulled out from the annular clamping groove 402, at which point the connecting column 14 can rotate axially; when the locking block 17 moves toward the connecting column 14, the active rack 24 also moves along with it, causing the L-shaped fastening block 25 to quickly press against the inclined surface of the annular clamping groove 402 and insert into the groove, thereby achieving external clamping and limiting of the rotating disk 4.

[0043] like Figure 11 As shown, one end of the auxiliary support arm 30 is coaxially and fixedly connected to the driven wheel 29, and the other end of the auxiliary support arm 30 is rotatably mounted with a roller 32.

[0044] Furthermore, by setting the roller 32 as the support for the auxiliary support arm 30 and contacting the annular limiting groove 401, the sliding friction is converted into rolling friction, resulting in a small coefficient of friction, thereby reducing mechanical wear. The auxiliary support arm 30 is engaged in the annular limiting groove 401, which has the effect of limiting the upper and lower parts of the rotating disk 4, effectively counteracting the instability caused by the center of gravity shift when the rotating disk 4 rotates axially, thereby enhancing the overall safety of the equipment.

[0045] like Figure 10 As shown, the bottom middle part of the auxiliary support arm 30 is set as a horizontal plane, and a damping pad 31 is fixedly adhered to this horizontal plane. This configuration improves the gripping force of the auxiliary support arm 30 on the horizontal plane, enabling the auxiliary support arm 30 to be stably supported on the vehicle body.

[0046] like Figure 3 as well as Figure 9 As shown, a mounting edge 6 is fixedly provided at the lower end of the outer wall of the fixed base 5, and multiple fixing bolts 7 are provided on the mounting edge 6 at intervals from the auxiliary support arm 30. This arrangement facilitates the assembly of the fixed base 5 onto the vehicle body. The drive assembly includes a turbine 15, a worm gear 16, and a side motor. The worm gear 16 is transversely placed inside the fixed base 5 and fixedly connected to the output shaft of the side motor. The turbine 15 is fixedly sleeved on the connecting post 14 and meshed with the worm gear 16.

[0047] like Figure 3 as well as Figure 5As shown, the mounting plate 8 is slidably mounted within the assembly frame 3. The first pushing assembly includes a translation bar 11, a rotating screw 12, and a first motor 13. The rotating screw 12 is slidably mounted within the assembly frame 3 and fixedly connected to the first motor 13. The translation bar 11 is slidably mounted within the assembly frame 3, and its interior passes through an internal threaded hole that mates with the rotating screw 12. The lower end of the translation bar 11 protrudes from two parallel vertical push columns 10. The mounting plate 8 has a double-track inclined groove 801 to accommodate the vertical push columns 10. Counterweights 9 are provided at both the left and right ends of the bottom of the mounting plate 8.

[0048] Specifically, by turning on motor 13, the rotating screw 12 is driven to rotate. Under the action of the internal and external threads, the translation bar 11 is forced to move the vertical push column 10 back and forth. The vertical push column 10 acts on the mounting plate 8, thereby offsetting the instability caused by the center of gravity shift when the three-link boom 1 deflects left and right, and further enhancing the overall safety of the equipment.

[0049] In use, this invention works as follows: Motor 13 is activated, causing the rotating screw 12 to rotate. The engagement of the internal and external threads causes the translation bar 11 to be forced, moving the vertical push column 10 back and forth. The vertical push column 10 acts on the mounting plate 8, thus counteracting the instability caused by the shift in the center of gravity when the three-link boom 1 deflects left or right, further enhancing the overall safety of the equipment. Specifically, when the three-link boom 1 deflects to the left, the mounting plate 8 moves to the left; similarly, when the three-link boom 1 deflects to the right, the mounting plate 8 also moves to the right. When the three-link boom 1 needs axial rotation, Motor 23 is activated, causing the spur gear 22 to rotate. The spur gear 22 acts on the internal gear ring 21. This causes the internal gear ring 21 to drive the drive ring 19 to rotate clockwise. The arc groove 20 on the drive ring 19 acts on the cylindrical pin 18, causing the cylindrical pin 18 to be forced to move the locking block 17 toward the auxiliary support frame, thereby releasing the connecting column 14. At the same time, the active rack 24 also moves together, causing the L-shaped fastening block 25 to be pulled out from the annular abutment groove 402. The auxiliary support arm 30 rotates upward 145° and its end is engaged in the annular limiting groove 401, limiting the upper and lower positions of the rotating disk 4. At this time, the connecting column 14 can rotate axially. Finally, the side motor is turned on to drive the worm gear 16 to rotate, causing the worm 15 to drive the connecting column 14 to rotate, thereby realizing the axial adjustment of the three-link boom 1.

[0050] When the boom stops rotating axially, the second motor 23 is turned on, causing the spur gear 22 to rotate. The spur gear 22 acts on the internal gear ring 21, causing the internal gear ring 21 to drive the drive ring 19 to rotate counterclockwise. The arc groove 20 on the drive ring 19 acts on the cylindrical pin 18, causing the cylindrical pin 18 to be forced to move the locking block 17 toward the connecting column 14, thereby locking the connecting column 14. At the same time, the active rack 24 also moves together, causing the L-shaped fastening block 25 to quickly squeeze the inclined surface of the annular pressing groove 402 and insert into the groove, thereby achieving external pressing and limiting of the rotating disk 4. Meanwhile, the auxiliary support arm 30 rotates downward 145° and its bottom is flush with the bottom surface of the mounting outer edge 6, which is used to further increase the bottom support area of ​​the fixed base 5 and improve the static stability of the equipment.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-link boom (1) stabilizing structure for an aerial work platform, comprising, from top to bottom, a work bucket (2), a three-link boom (1), and a base assembly, characterized in that: The base assembly assembly includes, in sequence, an assembly frame (3) connected to the three-bar linkage boom (1), a rotating disk (4), and a fixed base (5) connected to the vehicle body. The assembly frame (3) has a mounting plate (8) inserted through it on the left and right sides. The mounting plate (8) is pushed by the first push assembly to move linearly left and right, which is used to assist in adjusting the center of gravity position of the three-bar linkage boom (1). The outer side wall of the rotating disk (4) is provided with an annular limiting groove (401) and an annular abutment groove (402) from top to bottom. The upper end of the rotating disk (4) is fixedly connected to the assembly frame (3). The lower end of the rotating disk (4) is provided with a connecting column (14) that extends into the fixed base (5). The connecting column (14) is driven by the drive assembly and rotates within the fixed base (5). The fixed base (5) is provided with a locking assembly for pressing the connecting column (14). The locking assembly includes multiple sets of locking blocks (17) arranged in a ring array. The multiple sets of locking blocks (17) are driven by a second pushing assembly to perform radial synchronous movement. The second pushing assembly includes a drive ring (19), an internal gear ring (21), a spur gear (22), and a second motor (23). The upper end of the outer wall of the fixed base (5) is provided with the same number of cooperating support blocks (501) as the locking blocks (17). Each set of cooperating support blocks (501) is rotatably mounted with a set of auxiliary support arms (30). The auxiliary support arms (30) are driven by the linkage assembly and perform a 145° linear up and down flipping movement. The auxiliary support arms (30) flip upward and are locked in the annular limiting groove (401) to play the role of upper and lower limiting of the rotating disk (4). The auxiliary support arms (30) flip downward and their bottom is flush with the bottom surface of the mounting outer edge (6) to further increase the bottom support area of ​​the fixed base (5). Each set of supporting blocks (501) is equipped with a set of L-shaped fastening blocks (25) that are slidably installed. One end of the L-shaped fastening block (25) is connected to the driven component, and the other end of the L-shaped fastening block (25) is engaged in the annular clamping groove (402) to further enhance the connection stability between the rotating disk (4) and the fixed base (5). The driven component and the linkage component are both powered by the second push component. When the three-bar boom (1) deflects to the left, the mounting plate (8) moves to the left. When the three-bar boom (1) deflects to the right, the mounting plate (8) also moves to the right. The driving ring (19) has the same number of arc-shaped grooves (20) as the locking block (17) through it. A cylindrical pin (18) is inserted into each set of arc-shaped grooves (20). Each cylindrical pin (18) is fixedly connected to a set of locking blocks (17). The end of the locking block (17) near the connecting column (14) is set as an arc surface. The upper end of the locking block (17) is connected to the driven component. The driven component includes a driving rack (24), a steering wheel (26), and a driven toothed plate (27). One end of the driving rack (24) is fixedly connected to the locking block (17), and the other end of the driving rack (24) extends into the mating support block (501) and meshes with the steering wheel (26). The steering wheel (26) is rotatably mounted in the mating support block (501). The end of the steering wheel (26) away from the driving rack (24) meshes with the driven toothed plate (27), and the end of the driven toothed plate (27) away from the steering wheel (26) is connected to the linkage component. The linkage assembly includes a linkage rack (28) and a driven wheel (29). The driven wheel (29) is rotatably mounted in the mating support block (501) and meshes with the linkage rack (28). The linkage rack (28) is slidably mounted in the mating support block (501) and fixedly connected to the driven tooth plate (27). One end of the auxiliary support arm (30) is coaxially fixedly connected to the driven wheel (29), and the other end of the auxiliary support arm (30) is rotatably mounted with a roller (32).

2. The stabilizing structure of a three-link boom (1) for an aerial work platform according to claim 1, characterized in that: The locking block (17) is provided in no less than six sets. The driving ring (19) is limited to rotate and installed in the fixed base (5). The inner side wall of the driving ring (19) is fixedly provided with an internal gear ring (21). The internal gear ring (21) is meshed with a spur gear (22). The spur gear (22) is coaxially fixedly connected to the output shaft of the second motor (23).

3. The three-link boom (1) stabilization structure for an aerial work platform according to claim 2, characterized in that: The lower end of the L-shaped fastening block (25) is fixedly connected to the active rack (24), and the opening of the lower end face of the annular clamping groove (402) is set in an inclined shape.

4. The three-link boom (1) stabilization structure for an aerial work platform according to claim 1, characterized in that: The bottom of the middle part of the auxiliary support arm (30) is set as a horizontal plane, and a damping pad (31) is fixedly bonded to the horizontal plane.

5. The three-link boom (1) stabilization structure for an aerial work platform according to claim 1, characterized in that: The lower end of the outer wall of the fixed base (5) is fixedly provided with an installation outer edge (6). Multiple fixing bolts (7) are provided on the installation outer edge (6) at intervals with the auxiliary support arm (30). The drive assembly includes a turbine (15), a worm (16) and a lateral motor. The worm (16) is placed horizontally in the fixed base (5) and fixedly connected to the output shaft of the lateral motor. The turbine (15) is fixedly sleeved on the connecting column (14) and meshed with the worm (16).

6. The three-link boom (1) stabilization structure for an aerial work platform according to claim 1, characterized in that: The mounting plate (8) is slidably installed in the assembly frame (3). The first pushing component includes a translation bar (11), a rotating screw (12), and a first motor (13). The rotating screw (12) is slidably installed in the assembly frame (3) and fixedly connected to the first motor (13). The translation bar (11) is slidably installed in the assembly frame (3). The translation bar (11) passes through the internal thread hole that cooperates with the rotating screw (12).

7. The three-link boom (1) stabilization structure for an aerial work platform according to claim 6, characterized in that: The lower end of the translation bar (11) is protruding from two parallel vertical push columns (10). The mounting plate (8) is provided with a double-track inclined groove (801) to accommodate the vertical push columns (10). The bottom left and right ends of the mounting plate (8) are provided with counterweights (9).

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