Aerial work platform

Abstract

The application belongs to the technical field of aerial work equipment, and particularly relates to an aerial work machine, which comprises a work platform, a chassis, a rotary table and a gravity center adjusting mechanism, wherein the work platform is provided with a containing box, the containing box is internally provided with gravity center adjusting materials; the rotary table is provided with an arm support connected with the work platform; the gravity center adjusting mechanism is connected with the containing box and is used for moving the gravity center adjusting materials in the containing box out of the containing box. The chassis has a front tilting line and a rear tilting line, and the moment of force of the counterweight on the rotary table and the work platform on the chassis makes the gravity center located between the front tilting line and the rear tilting line. In the application, adjusting the arm support and the rotary table will make the gravity center move forward to the front tilting line, causing the chassis to have a front tilting tendency, the gravity center adjusting materials are moved out of the containing box by the gravity center adjusting mechanism to reduce the moment of force of the work platform on the chassis, so as to adjust the position of the gravity center backward, thereby making the gravity center return to between the front tilting line and the rear tilting line, and further avoiding the problem of front tilting of the chassis.

Description

Technical Field

[0001] This application belongs to the technical field of aerial work equipment, and specifically relates to an aerial work machine. Background Technology

[0002] Aerial work platforms are mobile aerial work equipment used in various industries for high-altitude operations, equipment installation, maintenance, and other tasks. They consist of a chassis, boom, and work platform. Workers are positioned on the work platform and use the boom's vertical and horizontal rotations, as well as its extension and retraction, to lift and move the work platform to the desired high-altitude work position.

[0003] Aerial work platforms have a tilting line, and a counterweight on the chassis keeps the platform's center of gravity inside the tilting line. When the boom or turntable adjusts, the center of gravity shifts. If the center of gravity moves outside the tilting line, the chassis will tilt forward. Because workers need to stand on the platform to perform aerial work, the safety requirements for aerial work platforms are high. Currently, there is no way to adjust the center of gravity of aerial work platforms to prevent the chassis from tilting forward. Summary of the Invention

[0004] The purpose of this application is to provide an aerial work platform that enables the adjustment of the center of gravity of the aerial work platform.

[0005] To achieve the above objectives, this application provides an aerial work platform, comprising:

[0006] Chassis;

[0007] A turntable is mounted on the chassis.

[0008] A boom, one end of which is connected to the turntable;

[0009] The working platform is connected to the other end of the boom, and the working platform is equipped with a container containing center of gravity adjustment materials;

[0010] A center-of-gravity adjustment mechanism is connected to the container and is used to move the center-of-gravity adjustment material inside the container to outside the container.

[0011] In some embodiments, the receiving box has a discharge port, the discharge port is covered by a cover plate, and the center of gravity adjustment mechanism includes a driving member, which is drivenly connected to the cover plate or the receiving box to separate the cover plate from the discharge port.

[0012] In some embodiments, the center of gravity adjustment mechanism further includes a fixed frame connected to the side of the working platform, the discharge port is opened on the top of the receiving box, the cover plate is rotatably connected to the top side of the receiving box near the working platform, the receiving box is rotatably connected to the fixed frame, and the driving member is drivenly connected to the receiving box and used to drive the receiving box to rotate in a direction away from the working platform.

[0013] In some embodiments, the fixing frame includes a vertical section and a horizontal section. The vertical section is connected to the side of the working platform, and the horizontal section is connected to the bottom end of the vertical section and extends in a direction away from the working platform. A rotating seat is provided on the horizontal section, and a rotating shaft is pivotally connected to the rotating seat. The central axis of the rotating shaft is parallel to both the horizontal and vertical sections, and the rotating shaft is connected to the side of the receiving box. The driving member is disposed near the discharge port relative to the rotating shaft and is used to apply a thrust to the receiving box in a direction away from the working platform.

[0014] In some embodiments, the drive element includes a plurality of springs extending in a direction away from the work platform, the springs being disposed between the receiving box and the vertical section.

[0015] In some embodiments, the receiving box is provided with a locking rod on the side facing the vertical section, the locking rod extends in the direction toward the working platform and passes through the vertical section, a locking groove is formed on the locking rod, and a pin is provided on the side of the vertical section facing the working platform, the pin engaging with the locking groove.

[0016] In some embodiments, an electromagnet is provided on the side of the vertical section facing the work platform, and the electromagnet, when energized, applies a force to the pin in the direction of disengaging from the locking groove.

[0017] In some embodiments, the chassis is provided with a material box, and the center of gravity adjustment mechanism includes a conveying component and a conveying pipe, the conveying pipe connecting the material box and the receiving box.

[0018] In some embodiments, the center-of-gravity adjusting material includes a cleaning fluid, and the conveying component includes a water pump motor disposed on the conveying pipe.

[0019] In some embodiments, the container is marked with scale values.

[0020] In some embodiments, the aerial work platform further includes:

[0021] A tilt detection unit is installed on the chassis. The tilt detection unit is used to detect the tilt direction of the chassis and the contact pressure between the chassis tires and the ground.

[0022] A rotary encoder is mounted on the chassis and is used to detect the extension direction of the boom;

[0023] The control unit, electrically connected to the tilt detection unit, the rotary encoder, and the center of gravity adjustment mechanism, is configured as follows:

[0024] The tilt direction vector of the chassis is obtained based on the detection results of the tilt detection unit;

[0025] The extension direction vector of the boom is obtained based on the detection result of the rotary encoder;

[0026] The actual value of the horizontal angle is obtained based on the tilt direction vector and the extension direction vector, wherein the projection of the tilt direction vector in the horizontal plane and the projection of the extension direction vector in the horizontal plane form the horizontal angle;

[0027] The working pressure is obtained based on the tilt direction vector and the contact pressure, wherein the contact pressure between the tire located on the side opposite to the tilt direction and the ground is the working pressure;

[0028] If the actual value of the horizontal angle is less than the preset value of the horizontal angle, and the actual value of the working pressure is less than the preset value of the working pressure, the center of gravity adjustment mechanism is controlled to move the center of gravity adjustment material out of the receiving box.

[0029] In some embodiments, the tilt detection unit includes:

[0030] A dual-axis tilt sensor detects the tilt angle of the chassis in two mutually perpendicular directions;

[0031] Multiple pressure sensors are mounted on the chassis and are used to detect the contact pressure between the chassis tires and the ground.

[0032] The aerial work platform provided in this application has the following beneficial effects through the above technical solution:

[0033] The center of gravity of aerial work platforms is mainly determined by the counterweight at one end of the boom and the working platform at the other end. Since the working platform has a relatively long lever arm, the center of gravity can be adjusted by only slightly changing the weight at the working platform. In this application, the working platform is equipped with a receiving box containing center of gravity adjustment materials. When the chassis is about to tilt forward, the center of gravity adjustment mechanism moves the materials out of the receiving box to adjust the center of gravity, shifting it from the tipping line to the inside of the tipping line, thereby preventing the chassis from tilting forward and improving the safety of the aerial work platforms.

[0034] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0035] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of the aerial work platform according to a specific embodiment of this application;

[0037] Figure 2 This is a structural schematic diagram of the center of gravity adjustment mechanism according to a specific embodiment of this application;

[0038] Figure 3 This is a structural schematic diagram of the center of gravity adjustment mechanism according to another embodiment of this application.

[0039] Explanation of reference numerals in the attached figures

[0040] 100. Aerial work machinery; 1. Chassis; 2. Boom; 3. Working platform; 4. Turntable; 5. Storage box; 6. Drive unit; 7. Fixing frame; 8. Rotating seat; 9. Rotating shaft; 10. Locking rod; 11. Pin; 12. Electromagnet; 13. Material box; 14. Conveying component; 15. Conveying pipeline. Detailed Implementation

[0041] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0042] The following description of the nouns for aerial work machinery 100 according to this application is with reference to the accompanying drawings.

[0043] Tilting lines: The aerial work platform 100 has a forward tilting line and a backward tilting line. When the center of gravity of the aerial work platform 100 is located between the forward tilting line and the backward tilting line, the aerial work platform 100 is in a stable state. When the center of gravity of the aerial work platform 100 is located on the forward tilting line, the aerial work platform 100 is at the critical point of tilting forward. When the center of gravity of the aerial work platform 100 is located on the backward tilting line, the aerial work platform 100 is at the critical point of tilting backward.

[0044] like Figure 1 and Figure 2As shown, a specific embodiment of this application provides an aerial work platform 100, including a work platform 3, a chassis 1, a boom 2, a turntable 4, and a center of gravity adjustment mechanism. The turntable 4 is mounted on the chassis 1, one end of the boom 2 is connected to the turntable 4, the work platform 3 is connected to the other end of the boom 2, and a receiving box 5 is provided on the work platform 3. The receiving box 5 contains center of gravity adjustment materials. The center of gravity adjustment mechanism is connected to the receiving box 5 and is used to move the center of gravity adjustment materials in the receiving box 5 out of the receiving box 5.

[0045] The torque exerted by the counterweight on the turntable 4 on the chassis 1 and the torque exerted by the working platform 3 on the chassis 1 are balanced, keeping the center of gravity between the forward tilt line and the backward tilt line, thus preventing the aerial work platform 100 from tilting forward or backward. When the boom 2 rotates downward in the vertical plane, rotates in the horizontal plane, or extends, the center of gravity will move forward until it reaches the forward tilt line, causing the chassis 1 to tend to tilt forward. In this application, when the chassis 1 tends to tilt forward, the center of gravity adjustment mechanism moves the center of gravity adjustment material out of the receiving box 5 to reduce the torque exerted by the working platform 3 on the chassis 1, thereby adjusting the position of the center of gravity backward, thus moving the center of gravity from the forward tilt line to behind the forward tilt line, and thus preventing the chassis 1 from tilting forward.

[0046] In reality, the counterweight has a large weight but a short lever arm. Changing the center of gravity by altering the counterweight's weight requires a significant weight adjustment, while changing the lever arm length requires altering the turntable's radius. Both of these measures necessitate modifications to the basic structure of the aerial work platform 100 before commencing aerial work, which in turn affects its performance. In this application, the center of gravity is adjusted by adding a container 5 and a center-of-gravity adjustment material to the work platform 3. This method eliminates the need to modify the basic structure of the aerial work platform 100, thus offering greater practicality.

[0047] Furthermore, the boom 2 includes a fixed end and a telescopic end. A turntable 4 is located at the fixed end of the boom 2, and a working platform 3 is located at the telescopic end of the boom 2. A counterweight is provided on the turntable 4, and a storage box 5 is provided on the working platform 3. Material is adjusted for center of gravity within the storage box 5. The lever arm of the material, the storage box 5, and the working platform 3 is the boom 2, forming a first torque on the fixed end of the boom 2. The lever arm of the counterweight is the turntable 4, forming a second torque. The first and second torques are in opposite directions. The turntable 4 is mounted on the chassis 1. The fixed end of the boom 2 is connected to the turntable 4 via the tower arm. A lifting cylinder is installed between the tower arm and the boom 2. During the operation of the aerial work platform 100, the boom 2 is adjusted to rotate in the horizontal plane via the turntable 4, and the boom 2 is adjusted to rotate in the vertical plane via the lifting cylinder. During the movement of the boom 2, the center of gravity of the aerial work platform 100 will shift. Especially when the boom 2 extends and rotates downward, the center of gravity moves forward, which can easily cause the chassis 1 to tilt forward.

[0048] In this application, since the lever arm of the container 5 and the center of gravity adjustment material is relatively long, the weight of the container 5 and the center of gravity adjustment material is relatively small, so that a greater degree of center of gravity position adjustment can be achieved. In other words, the method of adjusting the center of gravity position by adding the container 5 and the center of gravity adjustment material on the working platform 3 can adjust the center of gravity position more quickly and effectively, thereby more effectively preventing the aerial work machinery 100 from tilting forward.

[0049] It should be noted that, in the description of this disclosure, unless otherwise stated, the terms "upper," "lower," "left," "right," "front," "back," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0050] In some embodiments, the receiving box 5 has a discharge port, which is covered by a cover plate. The center of gravity adjustment mechanism includes a drive member 6, which is driven to the cover plate or the receiving box 5 to separate the cover plate from the discharge port. After the cover plate and the discharge port are separated, the center of gravity adjustment material is removed from the discharge port to the outside of the receiving box 5, thereby reducing the magnitude of the first torque generated by the working platform 3 and the receiving box 5, and thus adjusting the center of gravity position of the aerial work platform 100 backward.

[0051] In an optional embodiment, the discharge port can be opened in the front, back, left, right, down, or up directions. The discharge port can be opened by sliding or rotating. In the sliding opening method, the cover plate and the receiving box 5 are slidably engaged, and the driving member 6 pushes the cover plate or the receiving box 5 to slide. In the rotating opening method, the cover plate and the receiving box 5 are rotatably engaged, and the driving member 6 pushes the cover plate or the receiving box 5 to rotate.

[0052] Those skilled in the art will understand that, in addition to the above-described embodiments, other methods that enable the removal of materials from the container 5 with a center of gravity adjustment are also within the scope of protection of this application.

[0053] In some embodiments, the rear side of the working platform 3 is provided with a fixed frame 7, the receiving box 5 is rotatably connected to the fixed frame 7, the cover plate is rotatably connected to the receiving box 5, the discharge port is opened on the upper side of the receiving box 5, the pivot shaft of the cover plate is set at the upper end of the front side of the receiving box 5, the cover plate rotates backward to close the discharge port, the cover plate rotates forward to open the discharge port, the driving member 6 is driven connected to the receiving box 5 and is used to drive the receiving box 5 to rotate backward. While the receiving box 5 is rotating backward, the cover plate is pushed open by the material with the center of gravity adjustment to open the discharge port.

[0054] Specifically, the fixing frame 7 includes a vertical section and a horizontal section. The vertical section extends in the up-down direction and its front part is connected to the rear part of the working platform 3. The horizontal section extends in the front-back direction and its rear part is connected to the lower end of the front part of the vertical section. Two rotating seats 8 are provided on the horizontal section and are located on the left and right sides of the receiving box 5, respectively. Rotating shafts 9 are pivotally connected to the two rotating seats 8. The left rotating shaft 9 extends to the right and is connected to the left side of the receiving box 5. The right rotating shaft 9 extends to the left and is connected to the right side of the receiving box 5. The central axis of the left rotating shaft 9 and the central axis of the right rotating shaft 9 are on the same straight line. The driving member 6 is located above the rotating shaft 9 and is used to apply a backward force to the receiving box 5.

[0055] Furthermore, the drive element 6 is disposed between the housing 5 and the vertical section and is used to apply a rearward thrust to the housing 5.

[0056] In this application, the container 5 is placed outside the work platform 3 by the fixing frame 7 to avoid affecting the range of movement of the workers, thereby facilitating the workers to perform high-altitude operations on the work platform 3; the removal of materials is achieved by adjusting the center of gravity through the mechanical structure of the rotating seat 8, rotating shaft 9 and driving component 6, thereby simplifying the structure of the aerial work machine 100; and the compactness of the mechanical structure is increased by placing the driving component 6 between the container 5 and the fixing frame 7.

[0057] In an optional embodiment, the drive member 6 may be a telescopic member with telescopic capability or an elastic member with elastic capability. The two ends of the telescopic member are respectively connected to the rear side of the vertical section and the front side of the housing 5, and the two ends of the elastic member are respectively connected to the rear side of the vertical section and the front side of the housing 5.

[0058] Those skilled in the art will understand that, in addition to the embodiments described above, other driving components 6 capable of applying a backward rotational thrust to the housing 5 are also within the scope of protection of this application. The telescopic component can be a cylinder, hydraulic cylinder, etc., and the elastic component can be a spring, disc spring, etc.

[0059] In a preferred embodiment, the drive member 6 includes two springs spaced apart in the left-right direction. The springs extend and retract in the front-back direction. The front ends of the springs are connected to the rear side of the vertical section, and the rear ends of the springs are connected to the front side of the receiving box 5. A locking rod 10 is provided on the front side of the receiving box 5. The locking rod 10 extends forward and passes through the vertical section. The front end of the upper side of the locking rod 10 forms a locking groove. A pin 11 is provided on the front side of the vertical section, and the pin 11 engages with the locking groove. When the pin 11 engages with the locking groove, the spring is in a compressed state; when the pin 11 disengages from the locking groove, the spring extends to apply a rearward thrust to the receiving box 5.

[0060] Specifically, the locking groove is opened facing upwards, the pin 11 is arranged above the locking rod 10 and can be inserted downwards into the locking groove, and an movable hole is opened on the vertical section for the locking rod 10 to pass through. The size of the movable hole is such that the locking rod 10 can pass forward and backward.

[0061] Furthermore, an electromagnet 12 is provided on the front side of the vertical section, and the pin 11 is made of a material that can be attracted by a magnet. When the electromagnet 12 is energized, it applies an upward force to the pin 11.

[0062] In this application, the container 5 is fixed and released by a spring, a locking rod 10, and a pin 11 to separate the container 5 from the cover plate, thereby simplifying the structure of the aerial work platform 100. The state of the pin 11 and the locking groove is switched by an electromagnet 12, thereby realizing remote control of the material removal of the container 5 by adjusting the center of gravity. This facilitates the configuration of an electronic control unit on the aerial work platform 100 to achieve automation and intelligence of the center of gravity adjustment.

[0063] Those skilled in the art will understand that, in addition to the above-described embodiments, when using an elastic member to provide thrust to the receiving box 5, other structures that can achieve the fixing and release of the receiving box 5 are within the scope of protection of this application. For example, electromagnets 12 are provided on both sides of the receiving box 5 and the vertical section, and the magnetic components in the energized state attract each other to fix the receiving box 5, and the magnetic components in the de-energized state separate from each other to release the receiving box 5.

[0064] During the operation of the aerial work platform 100, the boom 2 is adjusted horizontally via the turntable 4 and vertically via the lifting cylinder. During boom 2 movement, the center of gravity of the aerial work platform 100 shifts. While the chassis 1 is more prone to tilting forward, it can also tilt backward, especially when the boom 2 is extended significantly, the work platform 3 bears a heavy load, and the boom rotates upward at a large angle. In such cases, the rearward shift of the center of gravity causes the chassis 1 to tilt backward. In other words, simply removing the center of gravity adjustment material from the receiving box 5 only moves the center of gravity backward to prevent the chassis 1 from tilting forward. Therefore, to improve the safety of the aerial work platform 100, it is necessary to move the center of gravity adjustment material from outside the receiving box 5 to inside the receiving box 5. This allows for the transfer of the center of gravity adjustment material according to the actual situation, thereby adjusting the center of gravity of the aerial work platform 100 forward or backward.

[0065] like Figure 3 As shown, in some embodiments, a material box 13 is provided on the chassis 1. The center of gravity adjustment mechanism includes a conveyor 14 and a conveying pipe 15. The conveying pipe 15 connects the material box 13 and the receiving box 5. The conveyor 14 can realize the transportation of center-adjusting materials between the receiving box 5 and the material box 13. In other words, it can not only shift the center of gravity backward when the chassis 1 tilts forward, but also shift the center of gravity forward when the chassis 1 tilts backward. It can be seen that by using the conveyor 14 and the conveying pipe 15 to transfer center-adjusting materials according to the actual situation, the safety of the aerial work platform is further improved.

[0066] In an optional embodiment, the center-of-gravity adjustment material includes a cleaning fluid, and the conveyor 14 includes a water pump motor mounted on the conveying pipe 15. As an example, the aerial work platform 100 is an aerial work cleaning vehicle; by using a cleaning fluid applicable to cleaning operations as the center-of-gravity adjustment material, the practicality of the aerial work platform 100 is improved without the need for additional loading of other materials.

[0067] Furthermore, the container 5 is marked with scale values. The volume and weight of the cleaning fluid are obtained based on the scale value reached by the liquid level of the cleaning fluid in the container 5, so as to calculate the magnitude of the first torque that the cleaning fluid can reduce, and thus set the counterweight weight according to the magnitude of the first torque.

[0068] In some embodiments, the aerial work platform 100 further includes a tilt detection unit and a rotary encoder. The tilt detection unit is mounted on the chassis 1 and is used to detect the tilt direction of the chassis 1 and the contact pressure between the tires of the chassis 1 and the ground. The rotary encoder is mounted at the connection point between the chassis 1 and the turntable 4 and is used to detect the extension direction of the boom 2. By comparing the tilt direction of the chassis 1 and the extension direction of the boom 2, it is determined whether the tilt of the chassis 1 can be changed by the center of gravity adjustment mechanism, and whether the center of gravity adjustment mechanism needs to move the center of gravity adjustment material out of or into the receiving box 5.

[0069] Specifically, the tilt detection unit detects that the chassis 1 is tilted forward, and the rotary encoder detects that the boom 2 is extended forward. At this time, the center of gravity adjustment mechanism moves the center of gravity adjustment material out of the container 5 and moves the center of gravity position of the aerial work platform 100 backward, thereby preventing the chassis 1 from tilting forward.

[0070] In actual high-altitude operations, due to uneven ground, the chassis 1 may tilt in any direction as the turntable 4 drives the boom 2 to rotate. Therefore, it is necessary to determine the center of gravity position and adjust the direction based on the tilt direction of the chassis 1.

[0071] In an optional embodiment, the tilt detection unit includes a dual-axis tilt sensor and multiple pressure sensors. The dual-axis tilt sensor detects the tilt angle of the chassis 1 in the front-to-back direction and the tilt angle in the left-to-right direction. It is known that the tilt angle in the front-to-back direction and the tilt angle in the left-to-right direction can be combined into a tilt angle in the vertical plane along the tilt direction. The multiple pressure sensors are disposed on the chassis 1 and are used to detect the contact pressure between each tire of the chassis 1 and the ground. After the chassis 1 has a tendency to tilt in the direction, the contact pressure between the tire located on the opposite side of the tilt direction and the ground will gradually decrease.

[0072] In a preferred embodiment, the chassis 1 has four rectangularly arranged wheels at its bottom, with axles on each row of wheels. At least two pressure sensors are present, one on each of the two axles and the other on two mutually perpendicular central axes of the chassis 1. In reality, under most operating conditions, the tilting direction and the extension direction are in the same vertical plane. In other words, in most cases, only forward tilting and backward tilting of the chassis 1 are possible. Therefore, using two pressure sensors is sufficient to detect the contact pressure between the tires and the ground.

[0073] The angle between the tilt direction and the extension direction, and the contact pressure detected by the pressure sensor are used as the judgment parameters for controlling the center of gravity adjustment mechanism. The dual-axis tilt sensor and pressure sensor detect the actual values ​​of the judgment parameters. The aerial work platform 100 also includes a control unit. The control unit is preset with a value related to the judgment parameters. The control unit is configured to compare the actual value of the judgment parameters with the preset value and control the center of gravity adjustment mechanism according to the comparison result.

[0074] In a preferred embodiment, the control unit is electrically connected to the tilt detection unit, the rotary encoder, and the center of gravity adjustment mechanism, and is configured such that:

[0075] The tilt direction vector of chassis 1 is obtained based on the detection results of the tilt detection unit;

[0076] The extension direction vector of boom 2 is obtained based on the detection results of the rotary encoder;

[0077] The actual value of the horizontal angle is obtained from the tilt direction vector and the extension direction vector, where the projection of the tilt direction vector onto the horizontal plane and the projection of the extension direction vector onto the horizontal plane form a horizontal angle.

[0078] The working pressure is obtained from the tilt direction vector and the contact pressure, where the contact pressure between the tire and the ground on the side opposite to the tilt direction is the working pressure.

[0079] If the actual value of the horizontal angle is less than the preset value of the horizontal angle, and the actual value of the working pressure is less than the preset value of the working pressure, control the center of gravity adjustment mechanism to move the center of gravity adjustment material out of the receiving box 5.

[0080] The preset value of the horizontal angle is determined according to actual needs, preferably 90°, and the preset value of the working pressure needs to be determined according to the counterweight.

[0081] Specifically: the tilt detection unit shows that the tilt direction of chassis 1 is forward, and the rotary encoder shows that the extension direction of boom 2 is forward. Based on the above results, the actual value of the horizontal included angle is 0° and the contact pressure between the rear tire and the ground is determined to be the working pressure. Then, if the actual value of the working pressure is less than the preset value of the working pressure, the center of gravity adjustment mechanism is controlled to move the center of gravity adjustment material out of the receiving box 5.

[0082] In this application, a control unit is set up to realize the automatic execution of the center of gravity adjustment mechanism, thereby improving the speed and accuracy of the center of gravity adjustment mechanism in realizing the anti-tipping function, and thus improving the safety of the aerial work machinery 100.

[0083] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0086] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An aerial work platform, characterized in that, include: Chassis (1); A turntable (4) is mounted on the chassis (1); Boom (2), one end of which is connected to the turntable (4); The working platform (3) is connected to the other end of the boom (2). The working platform (3) is provided with a container (5) containing center of gravity adjustment materials. A center of gravity adjustment mechanism is connected to the container (5) and is used to move the center of gravity adjustment material inside the container (5) out of the container (5).

2. The aerial work platform machinery according to claim 1, characterized in that, The container (5) has a discharge port, and a cover plate is provided on the discharge port. The center of gravity adjustment mechanism includes a drive (6), and the drive (6) is driven to connect with the cover plate or the container (5) to separate the cover plate from the discharge port.

3. The aerial work platform machinery according to claim 2, characterized in that, The center of gravity adjustment mechanism also includes a fixed frame (7) connected to the side of the working platform (3), the discharge port is opened on the top of the receiving box (5), the cover plate is rotatably connected to the top of the side of the receiving box (5) near the working platform (3), the receiving box (5) is rotatably connected to the fixed frame (7), and the driving member (6) is drivenly connected to the receiving box (5) and used to drive the receiving box (5) to rotate in a direction away from the working platform (3).

4. The aerial work platform machinery according to claim 3, characterized in that, The fixed frame (7) includes a vertical section and a horizontal section. The vertical section is connected to the side of the working platform (3). The horizontal section is connected to the bottom of the vertical section and extends in a direction away from the working platform (3). A rotating seat (8) is provided on the horizontal section and a rotating shaft (9) is pivotally connected to the rotating seat (8). The central axis of the rotating shaft (9) is parallel to both the horizontal section and the vertical section and the rotating shaft (9) is connected to the side of the receiving box (5). The driving member (6) is set close to the discharge port relative to the rotating shaft (9) and is used to apply a thrust to the receiving box (5) in a direction away from the working platform (3).

5. The aerial work platform machinery according to claim 4, characterized in that, The drive unit (6) includes a plurality of springs extending in a direction away from the work platform (3), the springs being disposed between the receiving box (5) and the vertical section.

6. The aerial work platform machinery according to claim 4, characterized in that, The receiving box (5) is provided with a locking rod (10) on the side facing the vertical section. The locking rod (10) extends in the direction towards the working platform (3) and passes through the vertical section. A locking groove is formed on the locking rod (10). A pin (11) is provided on the side of the vertical section facing the working platform (3). The pin (11) is engaged with the locking groove.

7. The aerial work platform machinery according to claim 6, characterized in that, An electromagnet (12) is provided on the side of the vertical section facing the working platform (3). When energized, the electromagnet (12) applies a force to the pin (11) in the direction of disengaging from the locking groove.

8. The aerial work platform machinery according to claim 1, characterized in that, The chassis (1) is provided with a material box (13), and the center of gravity adjustment mechanism includes a conveying component (14) and a conveying pipe (15). The conveying pipe (15) connects the material box (13) and the container (5).

9. The aerial work platform according to claim 8, characterized in that, The center of gravity adjustment material includes a cleaning liquid, and the conveying component (14) includes a water pump motor mounted on the conveying pipe (15).

10. The aerial work platform machinery according to claim 9, characterized in that, The container (5) has scale values ​​engraved inside.

11. The aerial work platform machinery according to claim 1, characterized in that, The aerial work platform (100) also includes: A tilt detection unit is installed on the chassis (1). The tilt detection unit is used to detect the tilt direction of the chassis (1) and the contact pressure between the tires of the chassis (1) and the ground. A rotary encoder is mounted on the chassis (1) and is used to detect the extension direction of the boom (2); The control unit, electrically connected to the tilt detection unit, the rotary encoder, and the center of gravity adjustment mechanism, is configured as follows: The tilt direction vector of the chassis (1) is obtained based on the detection result of the tilt detection unit; The extension direction vector of the boom (2) is obtained based on the detection result of the rotary encoder; The actual value of the horizontal angle is obtained based on the tilt direction vector and the extension direction vector, wherein the projection of the tilt direction vector in the horizontal plane and the projection of the extension direction vector in the horizontal plane form the horizontal angle; The working pressure is obtained based on the tilt direction vector and the contact pressure, wherein the contact pressure between the tire located on the side opposite to the tilt direction and the ground is the working pressure; If the actual value of the horizontal angle is less than the preset value of the horizontal angle and the actual value of the working pressure is less than the preset value of the working pressure, control the center of gravity adjustment mechanism to move the center of gravity adjustment material out of the container (5).

12. The aerial work platform machinery according to claim 11, characterized in that, The tilt detection unit includes: A dual-axis tilt sensor detects the tilt angle of the chassis (1) in two mutually perpendicular directions; Multiple pressure sensors are mounted on the chassis (1) and are used to detect the contact pressure between the tires of the chassis (1) and the ground.

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