High-altitude operation machine

Abstract

The invention belongs to the technical field of high-altitude operation equipment, and particularly relates to a high-altitude operation machine which comprises an operation platform, a chassis, a rotary table and a gravity center adjusting mechanism, the operation platform is provided with a containing box, and gravity center adjusting materials are contained in the containing box; the turntable is provided with an arm frame connected with the working platform; the gravity center adjusting mechanism is connected with the containing box and used for moving the gravity center adjusting materials in the containing box out of the containing box. The chassis is provided with a front tip-over line and a rear tip-over line, and the gravity center is located between the front tip-over line and the rear tip-over line due to the counter weight on the rotary table and the torque of the working platform to the chassis. In the application, the adjusting arm frame and the rotary table can enable the gravity center to move forwards to the front tipping line to cause the chassis to have a forward tipping trend, the gravity center adjusting mechanism moves the gravity center adjusting material out of the accommodating box to reduce the torque of the working platform to the chassis so as to adjust the position of the gravity center backwards, so that the gravity center returns to the position between the front tipping line and the rear tipping line; and the problem of forward inclination of the chassis is avoided.

Description

Technical Field

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

[0002] Aerial work machinery is a product that serves various industries for high-altitude work, equipment installation, maintenance and other movable high-altitude operations. It includes a chassis, a boom and a work platform. The operator is located on the work platform. The work platform is lifted and moved to the high-altitude working position by rotating the boom in the vertical plane, rotating in the horizontal plane, and adjusting the boom extension and retraction.

[0003] Aerial work machines have a tipping line, and the chassis is equipped with a counterweight to keep the center of gravity of the aerial work machine inside the tipping line. When the boom and turntable are adjusted, the center of gravity of the aerial work machine will move. Once the center of gravity moves to the outside of the tipping line, the chassis will tilt forward. Since workers need to stand on the work platform to perform aerial work, aerial work machines have high safety requirements. In the prior art, it is impossible to adjust the center of gravity of the aerial work machine to avoid the chassis tilting forward. Summary of the invention

[0004] The purpose of this application is to provide an aerial work machine to achieve the adjustment of the center of gravity of the aerial work machine.

[0005] In order to achieve the above-mentioned purpose, the present application provides, on one hand, an aerial work machine, comprising:

[0006] Chassis;

[0007] A turntable, arranged on the chassis;

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

[0009] A working platform, the working platform is connected to the other end of the boom, the working platform is provided with a containing box, and the containing box contains a gravity center adjustment material;

[0010] The center of gravity adjustment mechanism is connected to the containing box and is used to move the center of gravity adjustment material in the containing box out of the containing box.

[0011] In some embodiments, a discharge port is provided on the containing box, and a cover plate is provided on the discharge port. The center of gravity adjustment mechanism includes a driving member, and the driving member is connected to the cover plate or the containing box to separate the cover plate from the discharge port.

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

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

[0014] In some embodiments, the driving member includes a plurality of springs extending in a direction away from the working platform, and the springs are disposed between the containing box and the vertical section.

[0015] In some embodiments, a locking rod is provided on the side of the containing box facing the vertical section, the locking rod extends in a 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, and the pin is plugged into and fits with the locking groove.

[0016] In some embodiments, an electromagnet is provided on the side of the vertical section facing the working platform, and the electromagnet in an energized state applies a force to the latch in a direction to disengage from the locking groove.

[0017] In some embodiments, a material box is provided on the chassis, and the center of gravity adjustment mechanism includes a conveying member and a conveying pipeline, and the conveying pipeline connects the material box and the containing box.

[0018] In some embodiments, the center of gravity adjustment material includes a cleaning liquid, and the conveying member includes a water pump motor disposed on the conveying pipeline.

[0019] In some embodiments, scale values ​​are engraved inside the containing box.

[0020] In some embodiments, the aerial work machine further comprises:

[0021] A tilt detection unit, arranged on the chassis, for detecting the tilt direction of the chassis and the contact pressure between the tires of the chassis and the ground;

[0022] A rotary encoder, disposed on the chassis and used to detect the extension direction of the arm;

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

[0024] Obtaining a tilt direction vector of the chassis according to a detection result of the tilt detection unit;

[0025] Obtaining an extension direction vector of the arm according to a detection result of the rotary encoder;

[0026] Obtaining an actual value of a horizontal angle according to the tilt direction vector and the extension direction vector, wherein a projection of the tilt direction vector in a horizontal plane and a projection of the extension direction vector in a horizontal plane form the horizontal angle;

[0027] Obtaining a working pressure according to the tilt direction vector and the contact pressure, wherein the contact pressure between the tire on the side opposite to the tilt direction and the ground is the working pressure;

[0028] Determine that the actual value of the horizontal angle is smaller than the preset value of the horizontal angle, and the actual value of the working pressure is smaller than the preset value of the working pressure, and control the center of gravity adjustment mechanism to move the center of gravity adjustment material out of the containing box.

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

[0030] A dual-axis tilt sensor for detecting the tilt angles of the chassis in two directions perpendicular to each other;

[0031] A plurality of pressure sensors are arranged on the chassis and are respectively used to detect the contact pressure between the tires of the chassis and the ground.

[0032] Through the above technical solution, the aerial work machine provided by this application has the following beneficial effects:

[0033] The center of gravity of the aerial work machinery is mainly determined by the counterweight at one end of the boom and the working platform at the other end. The lever arm of the working platform is relatively long, and the center of gravity can be adjusted by only slightly changing the weight at the working platform. In the present application, the working platform is provided with a storage box, and the storage box is filled with center of gravity adjustment materials. When the chassis is about to tilt forward, the center of gravity adjustment material is moved out of the storage box through the center of gravity adjustment mechanism to adjust the center of gravity position, so that the center of gravity moves from the tipping line to the inside of the tipping line, thereby avoiding the problem of chassis tilting forward, thereby improving the safety of the aerial work machinery.

[0034] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0036] Figure 1 It is a structural schematic diagram of an aerial work machine according to a specific embodiment of the present application;

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

[0038] Figure 3 Schematic diagram of the structure of the center of gravity adjustment mechanism in another embodiment of the present application.

[0039] Description of Reference Numerals

[0040] 100. Aerial work machinery; 1. Chassis; 2. Boom; 3. Work platform; 4. Turntable; 5. Storage box; 6. Driving member; 7. Fixed frame; 8. Rotating seat; 9. Rotating shaft; 10. Locking rod; 11. Latch; 12. Electromagnet; 13. Material box; 14. Conveying member; 15. Conveying pipeline. DETAILED DESCRIPTION

[0041] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0042] The following describes the aerial work machine 100 according to the present application with reference to the accompanying drawings.

[0043] Tipping line: The aerial work machine 100 has a front tipping line and a rear tipping line. When the center of gravity of the aerial work machine 100 is located between the front tipping line and the rear tipping line, the aerial work machine 100 is in a stable state; when the center of gravity of the aerial work machine 100 is located on the front tipping line, the aerial work machine 100 is at the critical point of tipping forward; when the center of gravity of the aerial work machine 100 is located on the rear tipping line, the aerial work machine 100 is at the critical point of tipping backward.

[0044] like Figure 1 and Figure 2As shown, a specific embodiment of the present application provides an aerial work machinery 100, including a work platform 3, a chassis 1, a boom 2, a turntable 4 and a center of gravity adjustment mechanism, wherein the turntable 4 is arranged 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 containing box 5 is provided on the work platform 3, and the containing box 5 contains center of gravity adjustment materials; the center of gravity adjustment mechanism is connected to the containing box 5 and is used to move the center of gravity adjustment materials in the containing box 5 out of the containing box 5.

[0045] The torque of the counterweight on the turntable 4 on the chassis 1 and the torque of the working platform 3 on the chassis 1 are balanced with each other, so that the center of gravity is located between the forward tilting line and the backward tilting line, thereby preventing the aerial work machine 100 from tilting forward and backward. When the boom 2 rotates downward in the vertical plane, rotates in the horizontal plane, and the boom 2 is extended, the center of gravity will move forward until it reaches the forward tilting line, which will cause the chassis 1 to have a tendency to tilt forward. In the present application, when the chassis 1 has a tendency to tilt forward, the center of gravity adjustment material is moved out of the containing box 5 through the center of gravity adjustment mechanism to reduce the torque of the working platform 3 on the chassis 1, so as to adjust the position of the center of gravity backward, so that the center of gravity moves from the forward tilting line to the rear of the forward tilting line, thereby avoiding the problem of the chassis 1 tilting forward.

[0046] In fact, the weight of the counterweight is large but the lever arm is short. If the center of gravity position is to be changed by changing the weight of the counterweight, a large weight adjustment is required. If the center of gravity position is to be changed by changing the lever arm length of the counterweight, the turning radius of the turntable 4 needs to be changed. The above measures all require changes to the basic structure of the aerial work machine 100 before aerial work, and changes in the basic structure will affect the working performance of the aerial work machine 100. In the present application, the method of adding a storage box 5 and a center of gravity adjustment material to the working platform 3 to adjust the center of gravity position is adopted. This method does not require changes to the basic structure of the aerial work machine 100, so it has better practicality.

[0047] In addition, the boom 2 includes a fixed end and a telescopic end, a turntable 4 is arranged at the fixed end of the boom 2, and a working platform 3 is arranged at the telescopic end of the boom 2; a counterweight is arranged on the turntable 4, and a storage box 5 is arranged on the working platform 3. The center of gravity of the storage box 5 is adjusted to accommodate materials. The force arm of the center of gravity-adjusted materials, the storage box 5 and the working platform 3 is the boom 2 and forms a first moment on the fixed end of the boom 2, and the force arm of the counterweight is the turntable 4 and forms a second moment. The first moment and the second moment are in opposite directions; the turntable 4 is arranged on the chassis 1 The fixed end of the boom 2 is connected to the turntable 4 through the tower arm, and a lifting cylinder is arranged between the tower arm and the boom 2. During the operation of the aerial work machine 100, the adjustment action of the boom 2 rotating in the horizontal plane is realized by the turntable 4, and the adjustment action of the boom 2 rotating in the vertical plane is realized by the lifting cylinder. During the movement of the boom 2, the center of gravity of the aerial work machine 100 will move, especially when the boom 2 is extended and rotated downward, the center of gravity moves forward, and the chassis 1 is prone to tilting forward.

[0048] In the present application, since the lever arm of the containing box 5 and the center of gravity adjustment material is relatively long, the weight of the containing box 5 and the center of gravity adjustment material is relatively small, so a greater degree of center of gravity position adjustment can be achieved. In other words, the method of adding the containing box 5 and the center of gravity adjustment material to the working platform 3 to adjust the center of gravity position 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 the present disclosure, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0050] In some embodiments, a discharge port is provided on the storage box 5, and a cover plate is provided on the discharge port. The center of gravity adjustment mechanism includes a driving member 6, and the driving member 6 is connected to the cover plate or the storage 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 storage box 5, thereby reducing the magnitude of the first moment generated by the working platform 3 and the storage box 5, and then adjusting the center of gravity position of the aerial work machine 100 backward.

[0051] In an optional embodiment, the discharge port can be opened toward the front, back, left, right, bottom or top, and the discharge port can be opened by sliding or rotating. The sliding opening method is that the cover plate part and the receiving box 5 slide together, and the driving member 6 pushes the cover plate part or the receiving box 5 to slide. The rotating opening method is that the cover plate part and the receiving box 5 rotate together, and the driving member 6 pushes the cover plate part or the receiving box 5 to rotate.

[0052] Those skilled in the art will appreciate that, in addition to the above-mentioned embodiments, other methods capable of achieving the removal of the center of gravity-adjusted material from the containing box 5 all fall within the protection scope of the present application.

[0053] In some embodiments, a fixing frame 7 is provided on the rear side of the working platform 3, the containing box 5 is rotatably connected to the fixing frame 7, the cover member is rotatably connected to the containing box 5, the discharge port is opened at the upper side of the containing box 5, the pivot axis of the cover member is set at the upper end of the front side of the containing box 5, the cover member rotates backward to close the discharge port, and the cover member rotates forward to open the discharge port, the driving member 6 is drivably connected to the containing box 5 and is used to drive the containing box 5 to rotate backward, and when the containing box 5 rotates backward, the cover member will be flushed open by the center of gravity adjustment material 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 the front side of the vertical section is connected to the rear side of the working platform 3. The horizontal section extends in the front-back direction and the rear side of the horizontal section is connected to the lower end of the front side of the vertical section. Two rotating seats 8 are provided on the horizontal section and the two rotating seats 8 are respectively located on the left and right sides of the containing box 5. The two rotating seats 8 are respectively pivotally connected with rotating shafts 9. The rotating shaft 9 on the left extends to the right and is connected to the left side of the containing box 5. The rotating shaft 9 on the right extends to the left and is connected to the right side of the containing box 5. The central axis of the rotating shaft 9 on the left and the central axis of the rotating shaft 9 on the right are located on the same straight line. The driving member 6 is arranged above the rotating shaft 9 and is used to apply a backward force to the containing box 5.

[0055] Furthermore, the driving member 6 is disposed between the accommodating box 5 and the vertical section and is used to apply a backward thrust to the accommodating box 5 .

[0056] In the present application, the containing box 5 is arranged outside the working platform 3 by means of the fixing frame 7 to avoid the containing box 5 affecting the range of activities of the operators, thereby facilitating the operators to perform aerial work on the working platform 3; the removal of the center of gravity adjustment material is achieved through the mechanical structure of the rotating seat 8, the rotating shaft 9 and the driving member 6, thereby simplifying the structure of the aerial work machinery 100, and by arranging the driving member 6 between the containing box 5 and the fixing frame 7, the compactness of the mechanical structure can be increased.

[0057] In an optional embodiment, the driving member 6 can adopt a telescopic component with telescopic ability or an elastic component with elastic ability, the two ends of the telescopic component are respectively connected to the rear side of the vertical section and the front side of the containing box 5, and the two ends of the elastic component are respectively connected to the rear side of the vertical section and the front side of the containing box 5.

[0058] Those skilled in the art will appreciate that, in addition to the above-mentioned embodiments, other driving members 6 capable of applying a thrust to the container 5 to rotate backwards are within the protection scope of this application. The telescopic member may be a cylinder, an oil cylinder, etc., and the elastic member may be a spring, a disc spring, etc.

[0059] In a preferred embodiment, the driving member 6 includes two springs arranged at intervals in the left-right direction, the springs are extended and retracted in the front-to-back direction, the front end of the springs is connected to the rear side of the vertical section, and the rear end of the springs is 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, and a latch 11 is provided on the front side of the vertical section, and the latch 11 is plugged into the locking groove. When the latch 11 is plugged into the locking groove, the spring is in a compressed state; when the latch 11 is separated from the locking groove, the spring is extended to apply a backward thrust to the receiving box 5.

[0060] Specifically, the locking groove is opened upward, the latch 11 is arranged above the locking rod 10 and can be inserted downward into the locking groove, and a movable hole for the locking rod 10 to pass through is opened on the vertical section, and the aperture size of the movable hole can allow the locking rod 10 to pass forward and backward.

[0061] Furthermore, an electromagnet 12 is provided on the front side of the vertical section, and the latch 11 is made of a material that can be attracted by a magnet. The electromagnet 12 in a powered state exerts an upward force on the latch 11 .

[0062] In the present application, the fixing and releasing of the containing box 5 are achieved by means of a spring, a locking rod 10 and a latch 11, so as to complete the separation of the containing box 5 and the cover plate, thereby simplifying the structure of the aerial work machinery 100; the state of the latch 11 and the locking groove is switched by means of an electromagnet 12, so as to achieve remote control of the center of gravity adjustment and material removal of the containing box 5, thereby facilitating the configuration of an electronic control unit on the aerial work machinery 100 to realize the automation and intelligence of the center of gravity adjustment.

[0063] Those skilled in the art will appreciate that, in addition to the above-mentioned embodiments, when an elastic member is used to provide thrust for the receiving box 5, other structures capable of achieving the fixation and release of the receiving box 5 all fall within the scope of protection of the present application. For example, electromagnets 12 are provided on both sides of the receiving box 5 and the vertical section relative to each other, and the magnetic parts in the powered-on state are attracted to each other to achieve the fixation of the receiving box 5, and the magnetic parts in the powered-off state are separated from each other to achieve the release of the receiving box 5.

[0064] During the operation of the aerial work machine 100, the adjustment action of the boom 2 rotating in the horizontal plane is realized by the turntable 4, and the adjustment action of the boom 2 rotating in the vertical plane is realized by the lifting cylinder. During the movement of the boom 2, the center of gravity of the aerial work machine 100 will move. Although the chassis 1 is more likely to tilt forward, the chassis 1 may also tilt backward, especially when the boom 2 is extended longer, the weight on the working platform 3 is larger and it rotates upward to a larger elevation angle, the center of gravity position moves backward, causing the chassis 1 to tilt backward. In other words, only removing the center of gravity adjustment material to the outside of the storage box 5 can only move the center of gravity backward to avoid the chassis 1 from tilting forward. It can be seen that in order to improve the safety of the aerial work machine 100, it is also necessary to move the center of gravity adjustment material from the outside of the storage box 5 to the inside of the storage box 5, so as to transfer the center of gravity adjustment material according to the actual situation, and then adjust the center of gravity position of the aerial work machine 100 forward or backward.

[0065] like Figure 3 As shown, in some embodiments, a material box 13 is provided on the chassis 1, and the center of gravity adjustment mechanism includes a conveying member 14 and a conveying pipe 15, the conveying pipe 15 connects the material box 13 and the receiving box 5, and the conveying member 14 can realize the transportation of the center-adjusted material between the receiving box 5 and the material box 13. In other words, not only can the center of gravity position be moved backward when the chassis 1 tilts forward, but also can be moved forward when the chassis 1 tilts backward. It can be seen that the center of gravity adjustment material is transferred according to actual conditions through the conveying member 14 and the conveying pipe 15, thereby further improving the safety of the aerial work machinery.

[0066] In an optional embodiment, the center-of-gravity adjustment material includes cleaning liquid, and the conveying member 14 includes a water pump motor disposed on the conveying pipe 15. As an example, the aerial work machine 100 is an aerial work cleaning vehicle, and by using the cleaning liquid used for cleaning operations as the center-of-gravity adjustment material, there is no need to additionally load other materials, thereby improving the practicality of the aerial work machine 100.

[0067] Furthermore, scale values ​​are engraved in the containing box 5, and the volume and weight of the cleaning liquid are obtained according to the scale value reached by the liquid level of the cleaning liquid in the containing box 5, so as to calculate the first torque size that can reduce the cleaning liquid, and thus set the counterweight weight according to the first torque size.

[0068] In some embodiments, the aerial work machine 100 further includes a tilt detection unit and a rotary encoder, wherein the tilt detection unit is disposed 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 disposed at the connection position 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 with 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 the containing box 5 or into the containing box 5.

[0069] Specifically, the tilt detection unit detects that the chassis 1 is tilted forward, and the rotary encoder detects that the arm 2 is extended forward. At this time, the center of gravity adjustment material is moved out of the containing box 5 through the center of gravity adjustment mechanism to move the center of gravity position of the aerial work machinery 100 backward, thereby preventing the chassis 1 from tilting forward.

[0070] In fact, in actual aerial work, due to the uneven ground, the chassis 1 may tilt in any direction when the turntable 4 drives the arm 2 to rotate. Therefore, it is necessary to confirm the direction of adjusting the center of gravity according to the tilt direction of the chassis 1.

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

[0072] In a preferred embodiment, the bottom of the chassis 1 is provided with four moving wheels arranged in a rectangular shape, and the moving wheels in the same row are provided with wheel axles. The number of pressure sensors is at least two, and the two pressure sensors are respectively provided on the two wheel axles, and the two sensors are respectively provided on two mutually perpendicular central axes of the chassis 1. In fact, in most working conditions, the tilting direction and the extension direction are in the same vertical plane. In other words, in most cases, only the chassis 1 may tilt forward or backward. It can be seen that the provision of two pressure sensors can realize the detection of the contact pressure between the tire 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 judgment parameters for controlling the center of gravity adjustment mechanism. The dual-axis tilt sensor and the pressure sensor detect the actual values ​​of the judgment parameters. The aerial work machinery 100 also includes a control unit. The control unit is set with preset values ​​related to the judgment parameters in advance. The control unit is configured to compare the actual value of the judgment parameter 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 as follows:

[0075] Obtaining the tilt direction vector of the chassis 1 according to the detection result of the tilt detection unit;

[0076] The extension direction vector of the arm 2 is obtained according to the detection result of the rotary encoder;

[0077] The actual value of the horizontal angle is obtained according to 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 a horizontal angle;

[0078] The working pressure is obtained according to the tilt direction vector and the contact pressure, wherein the contact pressure between the tire on the side opposite to the tilt direction and the ground is the working pressure;

[0079] When it is determined that the actual value of the horizontal angle is smaller than the preset value of the horizontal angle and the actual value of the working pressure is smaller 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 containing box 5 .

[0080] Among them, 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 detection result of the tilt detection unit shows that the tilt direction of the chassis 1 is forward, and the detection result of the rotary encoder shows that the extension direction of the arm 2 is forward. According to the above results, the actual value of the horizontal angle is 0° and the contact pressure between the rear tire and the ground is determined to be the working pressure. When it is determined that 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 containing box 5.

[0082] In the present application, a control unit is provided to realize 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-dumping function, thereby improving the safety of the aerial work machine 100.

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

[0084] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A high-altitude working machine, characterized in that: include: Chassis (1); A turntable (4) is arranged on the chassis (1); A boom (2), one end of the boom (2) being connected to the turntable (4); A working platform (3), the working platform (3) being connected to the other end of the arm (2), the working platform (3) being provided with a containing box (5), the containing box (5) containing a gravity center adjustment material; A center of gravity adjustment mechanism is connected to the containing box (5) and is used to move the center of gravity adjustment material in the containing box (5) out of the containing box (5).

2. The aerial work machine according to claim 1, characterized in that: The containing box (5) is provided with a discharge port, and the discharge port is covered with a cover plate. The center of gravity adjustment mechanism comprises a driving member (6), and the driving member (6) is drivingly connected to the cover plate or the containing box (5) to separate the cover plate from the discharge port.

3. The aerial work machine 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 at the top of the containing box (5), the cover plate is rotatably connected to the top of the side of the containing box (5) close to the working platform (3), the containing box (5) is rotatably connected to the fixed frame (7), and the driving member (6) is drivingly connected to the containing box (5) and is used to drive the containing box (5) to rotate in a direction away from the working platform (3).

4. The aerial work machine according to claim 3, characterized in that: The fixing frame (7) comprises 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 end 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 containing box (5), the driving member (6) is arranged near the discharge port relative to the rotating shaft (9) and is used to apply a thrust to the containing box (5) in a direction away from the working platform (3).

5. The aerial work machine according to claim 4, characterized in that: The driving member (6) comprises a plurality of springs extending in a direction away from the working platform (3), and the springs are arranged between the containing box (5) and the vertical section.

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

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

8. The aerial work machine according to claim 1, characterized in that: A material box (13) is provided on the chassis (1), and the center of gravity adjustment mechanism comprises a conveying member (14) and a conveying pipeline (15), wherein the conveying pipeline (15) is connected to the material box (13) and the containing box (5).

9. The aerial work machine according to claim 8, characterized in that: The center of gravity adjustment material includes a cleaning liquid, and the conveying member (14) includes a water pump motor arranged on the conveying pipeline (15).

10. The aerial work machine according to claim 9, characterized in that: The containing box (5) has scale values ​​engraved therein.

11. The aerial work machine according to claim 1, characterized in that: The aerial work machine (100) further comprises: An inclination detection unit is arranged on the chassis (1), and is used to detect the inclination direction of the chassis (1) and the contact pressure between the tires of the chassis (1) and the ground; A rotary encoder, arranged on the chassis (1) and used to detect the extension direction of the arm (2); A control unit is electrically connected to the tilt detection unit, the rotary encoder and the center of gravity adjustment mechanism and is configured as follows: Obtaining the tilt direction vector of the chassis (1) according to the detection result of the tilt detection unit; Obtaining the extension direction vector of the arm (2) according to the detection result of the rotary encoder; Obtaining an actual value of a horizontal angle according to the tilt direction vector and the extension direction vector, wherein a projection of the tilt direction vector in a horizontal plane and a projection of the extension direction vector in a horizontal plane form the horizontal angle; Obtaining a working pressure according to the tilt direction vector and the contact pressure, wherein the contact pressure between the tire on the side opposite to the tilt direction and the ground is the working pressure; Determine that the actual value of the horizontal angle is smaller than the preset value of the horizontal angle, and the actual value of the working pressure is smaller than the preset value of the working pressure, and control the center of gravity adjustment mechanism to move the center of gravity adjustment material out of the containing box (5).

12. The aerial work machine according to claim 11, characterized in that: The tilt detection unit comprises: A dual-axis tilt sensor for detecting the tilt angles of the chassis (1) along two directions perpendicular to each other; A plurality of pressure sensors are arranged on the chassis (1) and are respectively used to detect the contact pressure between the tires of the chassis (1) and the ground.

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