Aerial work equipment and method of transporting same

Abstract

The invention relates to an aerial work equipment and a method for transporting it, the aerial work equipment comprising: a vehicle frame (1); a first arm (3) mounted on the vehicle frame (1) and configured to be able to oscillate in pitch; a second arm (8) connected to an end of the first arm (3) remote from the vehicle frame (1) and configured to be able to oscillate in a vertical plane with respect to the first arm (3) so as to have a stowed state in which it is superimposed below the first arm (3); a work platform (13) mounted at an end of the second arm (8) remote from the first arm (3).

Description

Technical Field

[0001] This invention relates to the field of engineering machinery, and more specifically, to an aerial work platform and its transportation method. Background Technology

[0002] Mobile lifting work platforms are now widely used in industries such as construction, steel structure, stadiums and rental. As the requirements for the overall working height and range of the machine become higher and higher, the use of articulated booms with telescopic function that are longer and lighter (compared to basic telescopic booms) has become a necessity. Under the premise of the same large working height and working range, the design of the long articulated boom can fully improve the stress on the basic telescopic boom and solve the problems of large deformation and high stress of the basic telescopic boom under high height and large range of operation.

[0003] Mobile lifting work platforms are a type of off-road machinery. As a type of engineering rental equipment used for carrying personnel, they require frequent vehicle transfers. Therefore, their transportation safety, reliability, and economy are extremely important, especially for large, high-altitude self-propelled mobile lifting work platforms equipped with long articulated booms.

[0004] Currently, the transportation of mobile lifting work platforms with long articulated booms is usually shortened by using a swing cylinder to swing the articulated boom (second boom) around a vertical swing axis to the side of the boom (first boom) (the articulated boom and the boom are arranged side by side in the horizontal direction), thus facilitating vehicle transportation.

[0005] The disadvantages of existing technologies are as follows: 1. For heavy articulated booms, the rotational resistance torque is very large, and the large changes in rotational resistance torque caused by the tilting of the swing cylinder can easily prevent the boom from swinging (the weight of the boom generates a force that causes the hinge axis of the boom and the arm to deviate from the vertical direction). 2. For heavy articulated booms, the rotational resistance torque is very large, and the cost of the boom swing cylinder is high. 3. For heavy articulated booms, the swing cylinder size and the cross-section of the boom are large, and the limited lateral space prevents transportation through the lateral swing of the boom. 4. Errors in the detection of the boom swing angle and malfunctions in the detection of the slewing lock pin can restrict the vehicle's swing, affecting vehicle transportation. Summary of the Invention

[0006] The present invention aims to provide an aerial work platform and its transportation method to improve the problem that the existing technical solution of retracting the second arm by swinging it to the side of the first arm is not suitable for a heavy second arm.

[0007] According to one aspect of the present invention, the present invention provides an aerial work platform, the aerial work platform comprising:

[0008] Frame;

[0009] The first arm is mounted on the frame and configured to tilt and swing.

[0010] The second arm is connected to the end of the first arm away from the frame and is configured to be swayable in a vertical plane relative to the first arm so as to have a retracted state folded under the first arm.

[0011] The work platform is installed at the end of the second arm that is furthest from the first arm.

[0012] In some embodiments, the aerial work platform further includes a first linkage mechanism connecting the first arm and the second arm.

[0013] In some embodiments, the first linkage mechanism includes:

[0014] Mounting base, hinged to the first arm, the second arm is rotatably mounted on the mounting base;

[0015] The first link is hinged to the first arm;

[0016] The second link is hinged at one end to the mounting base and at the other end to the first link;

[0017] The aerial work platform also includes a first hydraulic cylinder, one end of which is hinged to the first arm, and the other end is hinged to the first or second connecting rod.

[0018] The first arm, the first link, the second link, and the mounting base form a four-bar linkage.

[0019] In some embodiments, the thickness of at least a portion of the first arm gradually decreases along the direction close to the hinge axis between the mounting base and the first arm to form a first inclined surface on the underside of the first arm that is inclined relative to the extension direction of the first arm. A second inclined surface is provided on the side of the mounting base close to the first arm. When the second arm is in the retracted state, the second inclined surface of the mounting base is parallel to or abuts against the first inclined surface.

[0020] In some embodiments, the mounting base has a triangular cross-section, with the first vertex of the triangle hinged to the first arm, the second vertex of the triangle hinged to the second arm, and the side of the triangle between the third vertex and the first vertex located within the second inclined plane.

[0021] In some embodiments, the aerial work platform further includes a second hydraulic cylinder that drives the second arm to rotate relative to the first arm in a vertical plane, one end of the second hydraulic cylinder being hinged to the third apex of a triangle, and the other end of the second hydraulic cylinder being hinged to the second arm.

[0022] In some embodiments,

[0023] Both the first and second links are located at one end of the mounting base in the horizontal direction; and / or

[0024] Both the first and second links are located on the underside of the first arm.

[0025] In some embodiments, the aerial work platform further includes:

[0026] The first angle detection component is configured to detect the angle of the mounting base relative to the horizontal plane;

[0027] The controller is signal-connected to the first angle detection component and configured to control the first hydraulic cylinder to operate based on the angle information detected by the first angle detection component, so as to hold the mounting base at a predetermined angle relative to the horizontal plane.

[0028] In some embodiments, the work platform is configured to be rotatable in a vertical plane relative to the second arm, and the work platform is configured to rotate between the second arm and the first arm when the second arm is in a retracted state.

[0029] In some embodiments, the aerial work platform further includes:

[0030] The load-bearing component is configured to support the work platform and is hinged to the second arm;

[0031] The second linkage mechanism includes a third link and a fourth link. The third link is hinged to the second arm, and one end of the fourth link is hinged to the third link, while the other end is hinged to the load-bearing component.

[0032] The aerial work platform also includes a third hydraulic cylinder, one end of which is hinged to the second arm, and the other end is hinged to the third link or the second link.

[0033] The load-bearing component, the second arm, the third link, and the second link form a four-bar linkage.

[0034] In some embodiments, both the third and fourth links are located at one end of the load-bearing member in the horizontal direction.

[0035] In some embodiments, the aerial work platform further includes:

[0036] The second angle detection component is configured to detect the levelness of the work platform;

[0037] The controller is signal-connected to the second angle detection component and configured to control the third hydraulic cylinder to adjust the work platform to a horizontal position based on the angle information detected by the second angle detection component.

[0038] In some embodiments, the supporting component includes a swing hydraulic cylinder configured to drive the work platform to swing in a horizontal plane.

[0039] According to another aspect of the present invention, a method for transporting the above-mentioned aerial work platform is also provided. In some embodiments, before transporting the aerial work platform, the first arm, the second arm, and the working platform of the aerial work platform are adjusted to a retracted state. In the retracted state, the first arm is placed horizontally above the vehicle frame, the second arm is stacked below the first arm, and the working platform is located between the first arm and the second arm.

[0040] In some embodiments, adjusting the first arm, second arm, and work platform of the aerial work platform to a retracted state includes:

[0041] The second hydraulic cylinder that controls the swing of the second arm relative to the first arm retracts and adjusts the pitch angle of the first arm to allow the second arm to swing toward the first arm without collision.

[0042] Swing the second arm toward the first arm;

[0043] Rotate the work platform between the first and second arms;

[0044] Swing the first arm down until it is flat on the frame.

[0045] By applying the technical solution of this application, the second arm is located below the first arm when it is in the retracted state. The second arm rotates relative to the first arm around a horizontal axis, which improves the problem that the existing technical solution of retracting the second arm by swinging it to the side of the first arm is not suitable for a second arm with a large weight.

[0046] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic diagram of the structure of an aerial work platform according to an embodiment of the present invention is shown;

[0049] Figure 2 A partial structural schematic diagram of an aerial work platform according to an embodiment of the present invention is shown;

[0050] Figure 3 A schematic diagram of the first linkage mechanism of the aerial work platform according to an embodiment of the present invention is shown;

[0051] Figure 4A schematic diagram of the second linkage mechanism of the aerial work platform according to an embodiment of the present invention is shown;

[0052] Figure 5 A schematic diagram of the structure of the aerial work platform in the first state during the retraction process of an embodiment of the present invention is shown;

[0053] Figure 6 A schematic diagram of the structure of the aerial work platform in the second state during the retraction process according to an embodiment of the present invention is shown;

[0054] Figure 7 A schematic diagram of the structure of the aerial work platform in the third state during the retraction process according to an embodiment of the present invention is shown;

[0055] Figure 8 A structural schematic diagram of the fourth state of the aerial work platform during the retraction process according to an embodiment of the present invention is shown; and

[0056] Figure 9 A top view of the aerial work platform in the fourth state of an embodiment of the present invention is shown. Detailed Implementation

[0057] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0058] Combination Figures 1 to 4 As shown, in this embodiment, the aerial work platform includes a frame 1, a first arm 3, a second arm 8, and a work platform 13. The first arm 3 is mounted on the frame 1 and configured to be able to pitch and swing; the second arm 8 is connected to the end of the first arm 3 away from the frame 1 and is configured to be able to swing relative to the first arm 3 in a vertical plane to have a retracted state stacked below the first arm 3; the work platform 13 is mounted on the end of the second arm 8 away from the first arm 3.

[0059] In this embodiment, when the second arm 8 is in the retracted state, it is located below the first arm 3. The second arm 8 rotates relative to the first arm 3 about a horizontal axis, which improves the problem that the existing technology of retracting the second arm by swinging it to the side of the first arm is not suitable for a second arm with a large weight.

[0060] The frame 1 provides stable support for the entire equipment, meeting the requirements related to vehicle driving, steering, and stability.

[0061] In this embodiment, the aerial work platform also includes a turntable 2 mounted on the frame 1, the turntable 2 being configured to rotate relative to the frame 1 about a vertical axis of rotation. A first arm 3 is mounted on the turntable 2 in a pitch-swing configuration. The turntable 2 serves to connect the frame 1 and the first arm 3; optionally, the turntable 2 can rotate 360 ​​degrees relative to the frame 2.

[0062] In some embodiments, the first arm 3 is a telescopic arm comprising multiple arms sequentially mounted. The first arm 3 can not only pitch and swing to achieve amplitude variation, but also extend and retract to change its length, so as to transport the work platform 13 to a predetermined target position.

[0063] The aerial work platform also includes a first linkage mechanism 5 connecting the first arm 3 and the second arm 8. Using a linkage mechanism to connect the first arm 3 and the second arm 8 is beneficial for achieving a larger rotation angle under the condition of piston stroke limitation of the driving hydraulic cylinder.

[0064] The first linkage mechanism 5 includes a mounting base 53, a first link 51, and a second link 52. The mounting base 53 is hinged to the first arm 3, and the second arm 8 is rotatably mounted on the mounting base 53; the first link 51 is hinged to the first arm 3; one end of the second link 52 is hinged to the mounting base 53, and the other end is hinged to the first link 51. The first arm 3, the first link 51, the second link 52, and the mounting base 53 form a four-bar linkage.

[0065] The aerial work platform also includes a first hydraulic cylinder 4, one end of which is hinged to the first arm 3, and the other end is hinged to the first connecting rod 51 or the second connecting rod 52.

[0066] In this embodiment, the first hydraulic cylinder 4 drives the first linkage mechanism 5 to change the position of the mounting base 53. The first hydraulic cylinder 4 is used to rotate the mounting base 53 inward towards the first arm 3 when switching the second arm 8 to the retracted state. The first hydraulic cylinder 4 is also used to keep the mounting base 53 in a horizontal working position when the aerial work platform is carrying personnel.

[0067] The thickness of at least a section of the first arm 3 gradually decreases along the direction close to the hinge axis between the mounting base 53 and the first arm 3, so as to form a first inclined surface on the lower side of the first arm 3 that is inclined relative to the extension direction of the first arm 3. A second inclined surface is provided on the side of the mounting base 53 close to the first arm 3. When the second arm 8 is in the retracted state, the second inclined surface of the mounting base 53 is parallel to or fits against the first inclined surface.

[0068] The mounting base 53 has a triangular cross-section. The first vertex of the triangle is hinged to the first arm 3, the second vertex of the triangle is hinged to the second arm 8, and the side between the third vertex of the triangle and the first vertex is located in the second inclined plane.

[0069] The aerial work platform also includes a second hydraulic cylinder 7 that drives the second boom 7 to rotate relative to the first boom 3 in a vertical plane. One end of the second hydraulic cylinder 7 is hinged to the third apex of a triangle, and the other end is hinged to the second boom 8. The second hydraulic cylinder 7 is used to drive the second boom 8 to perform luffing movements, thereby increasing the working range of the work platform 13.

[0070] In some embodiments, the first link 51 and the second link 52 are both located at one end of the mounting base 53 in the horizontal direction, that is, the first link 51 and the second link 52 are located on the side of the mounting base 53. This helps to prevent the first link 51 and the second link 52 from occupying the space between the first arm 3 and the second arm 8, so as to ensure that the two inclined surfaces of the mounting base 53 and the first inclined surface at the end of the first arm 3 can be close together. The first link 51 and the second link 52 are both located on the lower side of the first arm 3.

[0071] One end of the first connecting rod 51 is rotatably connected (hinged) to the end of the first arm 3, and the other end is rotatably connected to the first hydraulic cylinder 4 and the second connecting rod 52 to control the direction of force transmitted by the first hydraulic cylinder 4. One end of the second connecting rod 52 is rotatably connected to the first hydraulic cylinder 4 and the first connecting rod 51, and the other end is rotatably connected to the mounting base 53. It is used to transmit the force of the first hydraulic cylinder 4, which acts on the mounting base 53, controlling the movement angle of the mounting base 53 (parallel to the ground under normal manned operation, and adjusting the angle of the mounting base 53 during vehicle transport). One end of the mounting base 53 is rotatably connected to the first arm 3, and is also rotatably connected to the second connecting rod 52, the second arm 8, and the second hydraulic cylinder 7, for mounting and fixing the second arm 8 and the second hydraulic cylinder 7.

[0072] The aerial work platform also includes a first angle detection component 6 and a controller. The first angle detection component 6 is configured to detect the angle of the mounting base 53 relative to the horizontal plane; the controller is signal-connected to the first angle detection component 6 and configured to control the first hydraulic cylinder 4 to operate based on the angle information detected by the first angle detection component 6, so as to hold the mounting base 53 at a predetermined angle relative to the horizontal plane. The predetermined angle can be 0 degrees, that is, the mounting base 53 is in a horizontal state.

[0073] The first angle detection component 6 is used to detect the angle of the mounting base 53 relative to the horizontal direction, so as to keep the mounting base 53 at an angle (generally 0 degrees, i.e., horizontal) relative to the horizontal direction.

[0074] During normal manned operation of the aerial work platform, the mounting base 53 connecting the first arm 3 and the second arm 8 is leveled during the entire luffing (pitching) process of the first arm 3. This ensures that the mounting base 53 used to fix the second arm 8 at the head of the first arm 3 is always at a constant angle to the ground, usually horizontal, so that the working platform 13 is always parallel to the ground during the luffing process of the first arm 3.

[0075] The second arm 8 is a telescopic arm comprising multiple sections nested together in sequence. In some embodiments, the second arm 8 includes three sections, with a fully extended length of 12.5 meters. The second arm 8 extends and retracts under the action of a telescopic hydraulic cylinder. The second arm 8 also undergoes amplitude variation (pitch swing) under the action of a second hydraulic cylinder 7 to increase operational convenience and enable downward exploration operations.

[0076] The first hydraulic cylinder 4 is also used to provide the main force when realizing the vehicle collection and transportation function. By changing the length of the first hydraulic cylinder 4, the first linkage mechanism 5 drives the second arm 8 to fold at the bottom of the first arm 3, thus shortening the overall transportation length.

[0077] The work platform 13 is configured to be rotatable in a vertical plane relative to the second arm 8, and the work platform 13 is configured to rotate between the second arm 8 and the first arm 3 when the second arm 3 is in the retracted state.

[0078] The aerial work platform also includes a load-bearing component 12, a second linkage mechanism 10, and a third hydraulic cylinder 9. The load-bearing component 12 is configured to support the work platform 13 and is hinged to the second arm 8. The second linkage mechanism 10 includes a third link 101 and a fourth link 102. The third link 101 is hinged to the second arm 8, and one end of the fourth link 102 is hinged to the third link 101, while the other end is hinged to the load-bearing component 12. One end of the third hydraulic cylinder 9 is hinged to the second arm 8, and the other end is hinged to either the third link 101 or the second link 102. The load-bearing component 12, the second arm 8, the third link 101, and the second link 102 form a four-bar linkage.

[0079] In some embodiments, the supporting component 12 includes a swing hydraulic cylinder configured to drive the work platform to swing in a horizontal plane. One end of the swing cylinder is rotatably connected to the end of the second arm 8, and the swing cylinder enables the platform to swing to facilitate operation.

[0080] The work platform 13 is used for personnel to stand inside to operate equipment, and can also be used to place tools for the work.

[0081] One end of the third hydraulic cylinder 9 is rotatably connected to the end section of the second arm 8. During normal operation, it ensures that the platform swing cylinder 12 used to fix the platform at the head of the second arm 8 is always at a constant angle to the ground, usually horizontal. This ensures that the platform is always parallel to the ground during the luffing process of the second arm 8, guaranteeing the safety and comfort of the people operating inside the platform.

[0082] When used to realize the vehicle collection and transportation function, the force of the third hydraulic cylinder 9 is transmitted, and the platform is folded at the bottom of the boom by adjusting the angle of the platform swing cylinder 12, thus shortening the length of the whole machine in the transportation state.

[0083] The second linkage mechanism 10 and the third hydraulic cylinder 9 work together. When the aerial work platform is in normal operation with personnel, the second linkage mechanism 10 transmits the force of the third hydraulic cylinder 9 to ensure that the platform swing cylinder (bearing component) at the head of the second arm 8, which is used to fix the working platform 13, is always at a constant angle to the ground, usually horizontal. This ensures that the platform remains parallel to the ground during the luffing process of the second arm 8, guaranteeing the safety and comfort of the personnel operating inside the working platform 13.

[0084] The second linkage mechanism 10 is used to transmit the force of the third hydraulic cylinder 9 when realizing the vehicle collection and transportation function. By adjusting the angle of the platform swing cylinder, the working platform 13 is folded at the bottom of the first arm 3, shortening the overall transportation length.

[0085] One end of the third link 101 is rotatably connected to the front end of the second arm 8, and the other end is rotatably connected to the third hydraulic cylinder 9 and the fourth link 102, used to control the direction of force transmitted by the third hydraulic cylinder 9. One end of the fourth link 102 is rotatably connected to the third hydraulic cylinder 9 and the third link 101 respectively, and the other end is rotatably connected to the platform swing cylinder, used to transmit the force of the third hydraulic cylinder 9, which acts on the platform swing cylinder to control the movement angle of the platform swing cylinder (parallel to the ground under normal manned operation, and adjusted when the vehicle is being transported).

[0086] The third link 101 and the fourth link 102 are both located at one end of the bearing component 12 in the horizontal direction, that is, the third link 101 and the fourth link 102 are both located on the side of the bearing component 12, so as to avoid the third link 101 and the fourth link 102 occupying the space between the second arm 8 and the working platform 13.

[0087] The aerial work platform also includes a second angle detection component 11. The second angle detection component 11 is configured to detect the levelness of the work platform 13.

[0088] The controller is signal-connected to the second angle detection component 11 and configured to control the third hydraulic cylinder 9 to move according to the angle information detected by the second angle detection component 11, so as to adjust the work platform 13 to be level.

[0089] When the aerial work platform is in normal operation with personnel: the first boom 3, under the action of the telescopic cylinder and the luffing cylinder, can change its length and angle, allowing a person to be quickly transported from one position to the target position. When the first boom 3 luffs, the first hydraulic cylinder 4 provides the driving force, which is transmitted to the mounting base 53 through the second connecting rod 51, ensuring that the mounting base 53 remains at a constant angle to the ground throughout the luffing process of the first boom 3, usually horizontal, thus ensuring that the angle between the platform and the ground remains constant during the luffing process of the first boom 3.

[0090] The first angle detection component 6 detects the angle of the mounting base 53 relative to the ground in real time. The first connecting rod 51 controls the direction of force transmitted by the first hydraulic cylinder 4. Under the action of the telescopic cylinder and the second hydraulic cylinder 7, the second arm 8 can change its length and angle, quickly moving a person from one position to a target position. When the second arm 8 performs luffing movements, the third hydraulic cylinder 9 provides the driving force, which is transmitted to the platform swing cylinder through the fourth connecting rod 102, ensuring that the platform swing cylinder remains at a constant angle to the ground throughout the luffing process, typically horizontal, thus maintaining a constant angle between the platform and the ground during the luffing process. The second angle detection component 11 detects the angle of the platform swing cylinder relative to the ground in real time, with the third connecting rod 101 controlling the direction of force transmitted by the third hydraulic cylinder 9.

[0091] According to another aspect of the present invention, a method for transporting the above-mentioned aerial work platform is also provided. In some embodiments, before transporting the aerial work platform, the first arm 3, the second arm 8 and the working platform 13 of the aerial work platform are adjusted to a retracted state. In the retracted state, the first arm 3 is placed horizontally above the frame 1, the second arm 8 is stacked below the first arm 3, and the working platform 13 is located between the first arm 3 and the second arm 8.

[0092] In some embodiments, adjusting the first arm 3, the second arm 8, and the work platform 13 of the aerial work platform to a retracted state includes:

[0093] The second hydraulic cylinder 7, which controls the swing of the second arm 8 relative to the first arm 3, retracts and adjusts the pitch angle of the first arm 3 to allow the second arm 8 to swing toward the first arm 3 without collision.

[0094] Swing the second arm 8 toward the first arm 3;

[0095] Rotate the work platform 13 between the first arm 3 and the second arm 8;

[0096] Swing the first arm 3 downwards until it is flat on the frame 1.

[0097] When used for vehicle collection and transportation functions:

[0098] By manually leveling the boom, the second arm 8 and the work platform 13 are folded and retracted to the bottom of the boom through changes in the lengths of the first hydraulic cylinder 4 and the third hydraulic cylinder 9. (See below) Figures 5 to 9 As shown.

[0099] Specifically as follows:

[0100] In normal manned operation mode, the first boom 3 is raised to a certain angle (Note: to avoid the working platform 13 hitting the cab of the flatbed truck or to avoid the platform 13 hitting the ground), while simultaneously, under the action of the second boom luffing cylinder 7, the second boom 8 is luffed to its minimum angle, such as... Figure 5 As shown.

[0101] Then, by controlling the length change of the first hydraulic cylinder 4, the first linkage mechanism 5 is driven to cause the second arm 8 to rotate towards the tail of the first arm 3. When the first hydraulic cylinder 4 is at its shortest length, the first linkage 51, the second linkage 51, and part of the mounting base 53 rotate into the internal space of the last section of the first arm 3, and the second arm 8 is retracted to the bottom of the boom. See below. Figure 6 Meanwhile, a limit block is installed on the mounting base 53. When the second arm 8 is retracted to the bottom, the limit block and the boom head structure can be buffered together to avoid interference with the boom caused by excessive retraction angle of the second arm 8 due to reasons such as cylinder length and structural component hinge point error.

[0102] Then, by controlling the length change of the third hydraulic cylinder 9, the second linkage mechanism 10 is driven to cause the working platform 13 to rotate towards the tail of the second boom 8. When the third hydraulic cylinder 9 is at its shortest length, the third linkage 101 and the fourth linkage 102 rotate into the internal space of the last section of the second boom 8, and the working platform 13 is retracted to the bottom of the boom. Figure 7 The state shown.

[0103] Then turn off the automatic leveling function of the second boom 8 and the working platform 13, and lower the first boom 3 to the bottom. The entire machine will then reach its minimum transport length and height. Figure 8 and Figure 9 As shown.

[0104] The above are merely exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An aerial work platform, characterized in that, include: Frame (1); The first arm (3) is mounted on the frame (1) and configured to be able to pitch and swing. The second arm (8) is connected to the end of the first arm (3) away from the frame (1) and is configured to be swayable in a vertical plane relative to the first arm (3) to have a folded state stacked below the first arm (3). The work platform (13) is installed at the end of the second arm (8) away from the first arm (3). The aerial work platform also includes a first linkage mechanism (5) that connects the first arm (3) and the second arm (8). The first linkage mechanism (5) includes: Mounting base (53) is hinged to the first arm (3), and the second arm (8) is rotatably mounted on the mounting base (53); The first link (51) is hinged to the first arm (3); The second link (52) is hinged at one end to the mounting base (53) and at the other end to the first link (51); The aerial work platform also includes a first hydraulic cylinder (4), one end of which is hinged to the first arm (3), and the other end is hinged to the first connecting rod (51) or the second connecting rod (52). The first arm (3), the first connecting rod (51), the second connecting rod (52), and the mounting base (53) form a four-bar linkage. The thickness of at least one segment of the first arm (3) gradually decreases along the direction close to the hinge axis between the mounting base (53) and the first arm (3) to form a first inclined surface on the lower side of the first arm (3) that is inclined relative to the extension direction of the first arm (3). A second inclined surface is provided on the side of the mounting base (53) close to the first arm (3). When the second arm (8) is in the retracted state, the second inclined surface of the mounting base (53) is parallel to or fits against the first inclined surface.

2. The aerial work platform according to claim 1, characterized in that, The mounting base (53) has a triangular cross section. The first vertex of the triangle is hinged to the first arm (3), the second vertex of the triangle is hinged to the second arm (8), and the side of the triangle between the third vertex and the first vertex is located in the second inclined plane.

3. The aerial work platform according to claim 2, characterized in that, It also includes a second hydraulic cylinder (7) that drives the second arm (8) to rotate relative to the first arm (3) in a vertical plane. One end of the second hydraulic cylinder (7) is hinged to the third apex of the triangle, and the other end of the second hydraulic cylinder (7) is hinged to the second arm (8).

4. The aerial work platform according to claim 1, characterized in that, The first link (51) and the second link (52) are both located at one end of the mounting base (53) in the horizontal direction; and / or The first link (51) and the second link (52) are both located on the lower side of the first arm (3).

5. The aerial work platform according to claim 1, characterized in that, Also includes: The first angle detection component (6) is configured to detect the angle of the mounting base (53) relative to the horizontal plane; The controller is signal-connected to the first angle detection component (6) and configured to control the first hydraulic cylinder (4) to operate based on the angle information detected by the first angle detection component (6) to hold the mounting base (53) at a predetermined angle relative to the horizontal plane.

6. The aerial work platform according to claim 1, characterized in that, The work platform (13) is configured to be rotatable in a vertical plane relative to the second arm (8), and the work platform (13) is configured to rotate between the second arm (8) and the first arm (3) when the second arm (8) is in a retracted state.

7. The aerial work platform according to claim 6, characterized in that, Also includes: The support component (12) is configured to support the work platform (13) and is hinged to the second arm (8); The second linkage mechanism (10) includes a third link (101) and a fourth link (102). The third link (101) is hinged to the second arm (8), and one end of the fourth link (102) is hinged to the third link (101) and the other end is hinged to the bearing component (12). The aerial work platform also includes a third hydraulic cylinder (9), one end of which is hinged to the second arm (8), and the other end is hinged to the third link (101) or the fourth link (102); The supporting component (12), the second arm (8), the third link (101) and the fourth link (102) form a four-bar linkage.

8. The aerial work platform according to claim 7, characterized in that, The third link (101) and the fourth link (102) are both located at one end of the bearing component (12) in the horizontal direction.

9. The aerial work platform according to claim 7, characterized in that, Also includes: The second angle detection component (11) is configured to detect the levelness of the work platform (13); The controller is signal-connected to the second angle detection component (11) and configured to control the third hydraulic cylinder (9) to move according to the angle information detected by the second angle detection component (11) so as to adjust the work platform (13) to a horizontal position.

10. The aerial work platform according to claim 7, characterized in that, The load-bearing component (12) includes a swing hydraulic cylinder configured to drive the work platform to swing in a horizontal plane.

11. A method for transporting aerial work equipment according to any one of claims 1 to 10, characterized in that, Before transporting the aerial work equipment, the first arm (3), the second arm (8) and the work platform (13) of the aerial work equipment are adjusted to the retracted state. In the retracted state, the first arm (3) is placed flat above the frame (1), the second arm (8) is stacked below the first arm (3), and the work platform (13) is located between the first arm (3) and the second arm (8).

12. The transportation method according to claim 11, characterized in that, Adjusting the first arm (3), second arm (8), and work platform (13) of the aerial work equipment to the retracted state includes: The second hydraulic cylinder (7) that controls the swing of the second arm (8) relative to the first arm (3) retracts and adjusts the pitch angle of the first arm (3) to allow the second arm (8) to swing toward the first arm (3) without collision; Swing the second arm (8) toward the first arm (3); Rotate the work platform (13) between the first arm (3) and the second arm (8); Swing the first arm (3) downwards until it is flat on the frame (1).

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