Three-power-source system and spider crawler type aerial work platform

Abstract

The invention relates to the technical field of aerial work platforms, in particular to a three-power-source system and a spider crawler type aerial work platform. The three-power-source system comprises a box-shaped structure arranged on the vehicle frame structure, and a three-power-source structure arranged on the vehicle frame structure, a rectangular beam structure extending towards the rear portion of the frame structure is arranged on the bottom face of the box-shaped structure, and a hanging structure is arranged on the top face of the front end of the box-shaped structure. The hydraulic oil tank is hung at the hanging structure; the lithium battery power device is mounted on the rectangular beam structure; the plug-in power device comprises a 220V plug-in power device and a 380V plug-in power device; the plug-in power device is mounted on the upper surface of the hydraulic oil tank; and one of the lithium battery power device, the 220V plug-in power device and the 380V plug-in power device is used as a power source. Through the unique box-type structure, the three power supply systems can be integrally installed in small spaces on the front side and the rear side of the box-type structure, so that the purposes of simplifying the arrangement form and saving the installation space are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerial work platforms, and in particular to a three-power source system and a spider crawler type aerial work platform. Background Art

[0002] Aerial work platforms are mainly composed of work baskets, flying arms, booms, turntables, frames, hydraulic systems, electrical and control systems, power systems, etc. Traditional aerial work platforms are equipped with a diesel engine to provide power for the entire vehicle. The engine converts energy to drive the electrical and hydraulic systems to work, thereby enabling the entire vehicle to move and realize functions such as walking and boom extension and retraction. Spider crawler aerial work platforms belong to aerial work platforms and are a subdivided product. They are characterized by crawler-type walking mode. During the working process, the legs support the entire machine. The entire machine is small in size and light in weight, and is suitable for entering indoor operations.

[0003] With the development of the economy and society, environmental protection has become more and more important. The fuel system is facing upgrading and elimination, and electrification has become a new development point. The current mainstream of electrification development of aerial work platforms is to equip the whole machine with a battery power system, which provides energy for the whole machine through battery storage and discharge. However, the battery has a limited capacity at one time, and the battery needs to be charged when it is low. Integrating the plug-in power supply system and the battery system into the aerial work platform can realize the function of long-term operation of the whole machine. However, adding a plug-in power supply system will take up more installation space. The spider crawler aerial work platform itself is small in size, and adding a plug-in power supply system is difficult to arrange. Summary of the invention

[0004] The purpose of the present invention is to provide a three-power source system and a spider crawler aerial work platform. Through a unique box-type structure and in conjunction with a hydraulic oil tank, the lithium battery power device, the 220V plug-in power device and the 380V plug-in power device can be integrated and installed in a smaller space on the front and rear sides of the box-type structure, so as to reduce the difficulty of layout and save installation space in space-constrained scenarios.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a three-power source system for installation on a frame structure of an aerial work platform; the system comprises: A box-shaped structure is arranged on the frame structure; a rectangular beam structure extending toward the rear of the frame structure is arranged on the bottom surface of the box-shaped structure, and a hanging structure is arranged on the top surface of the front end of the box-shaped structure; A hydraulic oil tank, mounted on the mounting structure, for providing hydraulic oil to the hydraulic system of the aerial work platform; A lithium battery power device is installed on the rectangular beam structure; A plug-in power device, including a 220V plug-in power device and a 380V plug-in power device; the plug-in power device is installed on the upper surface of the hydraulic oil tank; One of the lithium battery power device, the 220V plug-in power device and the 380V plug-in power device is used as a power source to activate the actuator of the hydraulic system.

[0006] Optionally, the interior of the box-type structure is hollow; the rectangular beam structure includes two mutually parallel matrix beams, and downward step structures are formed on the two matrix beams.

[0007] Optionally, it also includes: A circular hole structure passes through the top and bottom surfaces of the box-shaped structure; the circular hole structure is closed by a bent annular plate; Threading holes are provided on the side elevations of the bent annular plate and on the surrounding elevations of the box-shaped structure; The hydraulic and electrical pipelines connecting the lithium battery power source, the 220V plug-in power source, the 380V plug-in power source and the hydraulic system are passed through the threading holes and the circular hole structure.

[0008] Optionally, it also includes: a three-speed switch, including three gears, the three gears respectively corresponding to the lithium battery power device, the 220V plug-in power device and the 380V plug-in power device; the three-speed switch is used to switch the gears to switch the power source.

[0009] Optionally, an electrical control box is arranged on one side of the box-type structure, and a transformer and a motor driver are arranged on the other side.

[0010] Optionally, the lithium battery power device includes a charger, a lithium battery, a motor driver and an AC pump motor, the charger is used to charge the lithium battery, and the motor driver is used to control the operation of the AC pump motor to drive the actuator of the hydraulic system.

[0011] Optionally, the 220V plug-in power device comprises a 220V plug connector and a 220V AC pump motor, and the 220V plug connector is used to connect to an external 220V mains electricity to enable the 220V AC pump motor to work and drive the actuator of the hydraulic system to operate; Optionally, the 380V plug-in power device includes a 380V plug connector, a frequency converter, and a 380V AC pump motor; the 380V plug connector is used to connect to an external 380V AC power supply to operate the 380V AC pump motor through the frequency converter and drive the actuators of the hydraulic system to operate.

[0012] Optionally, the actuator includes a telescopic cylinder and a valve body.

[0013] In a second aspect, the present invention provides a spider crawler type aerial work platform, which includes the three-power source system.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The three power source systems in the present invention can work independently to drive the whole machine to perform various actions through the hydraulic system. The whole machine adopts a pure electric working mode to achieve energy saving, environmental protection and low noise requirements, and the 220V and 380V plug-in modes can effectively make up for the functional defects of the limited battery life of the pure lithium battery mode and achieve long-term battery life.

[0015] 2. The present invention can integrate the lithium battery power device and the plug-in action device into a smaller space on the front and rear sides of the box structure through the box structure, which simplifies the layout, reduces the difficulty of layout and improves the space utilization rate, and will not have a significant impact on the layout of other components of the aerial work platform itself. The hydraulic and electrical pipelines are arranged in the internal space of the hollow box structure through the threading holes, so as to fully utilize the space on the one hand and provide shielding and safety protection for the hydraulic and electrical pipelines on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the three-power source system in Example 1; Figure 2 for Figure 1 A schematic diagram of the structure from another perspective; Figure 3 for Figure 2 Structural diagram of the middle box structure; Figure 4 This is a schematic diagram of the three-power source mode working switching control in Example 1; Figure 5 It is a structural schematic diagram of the spider crawler type aerial work platform in Example 2; Figure 6 for Figure 5 Schematic diagram of the structure of the aluminum alloy platform; Figure 7 for Figure 5 A schematic diagram of the structure of the middle retractable curved arm; Figure 8 for Figure 7 Structural schematic diagram of the middle platform easy disassembly and assembly structure; Fig. 9 for Figure 7 Structural diagram of the middle swing cylinder leveling mechanism; Fig.10 for Figure 7 Structural diagram of the middle platform swing mechanism; Fig.11 for Figure 5Structural diagram of the middle six-section telescopic boom; Fig.12 for Figure 5 Schematic diagram of the structure of the hydraulic pipeline conveying system of the middle winch cable; Fig.13 for Figure 5 Schematic diagram of the structure of the relay station; Fig.14 for Figure 5 Schematic diagram of the structure of the middle outrigger; Fig.15 for Figure 5 Schematic diagram of the structure of the middle crawler walking mechanism.

[0017] Numbers in the figure: 1. Aluminum alloy platform; 2. Retractable curved arm; 21. Swinging cylinder leveling mechanism; 22. Platform swing mechanism; 23. Platform easy-to-disassemble and assemble structure; 24. First luffing connecting rod; 25. Second luffing connecting rod; 3. Six-section telescopic boom; 31. One-section boom; 32. Two-section boom; 33. Three-section boom; 34. Four-section boom; 35. Five-section boom; 36. Six-section boom; 4. Plate chain telescopic system; 5. Winch cable hydraulic pipeline conveying system; 6. Turntable; 7. Frame structure; 71. Box-type structure; 711. Round hole structure; 712. Hanging structure; 713. Threading hole; 714. Rectangular beam structure; 8. Outriggers; 9. Track mechanism; 91. Axle structure; 92. Rubber track; 93. Wheel train; 10. Hydraulic system; 11. Electrical system; 111. Plug-in power unit; 112. Lithium battery power unit; 12. Electrical control box; 13. Motor driver; 14. Hydraulic oil tank. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0019] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention. Example 1

[0020] Combination Figure 1 This embodiment provides a three-power source system for installation on the frame structure 7 of the aerial work platform; it includes a box-type structure 71, combined with Figure 2 and Figure 3 The box-shaped structure 71 is arranged on the frame structure 7; a rectangular beam structure 714 extending to the rear of the frame structure 7 is arranged on the bottom surface of the box-shaped structure 71, and a hanging structure 712 is arranged on the top surface of the front end of the box-shaped structure 71; the hydraulic oil tank 14 of the aerial work platform is hung on the hanging structure 712. In a specific embodiment, the hanging structure 712 includes a hanging hole, and the hook-shaped structure on the hydraulic oil tank 14 can be hung in the hanging hole for installation and connection. The hydraulic oil tank 14 is used to provide hydraulic oil for the hydraulic system 10 of the aerial work platform.

[0021] A lithium battery power device 112 is installed on the rectangular beam structure 714. In a specific embodiment, the rectangular beam structure 714 includes two parallel matrix beams, and downward step structures are formed on the two matrix beams to form a sunken structure. In this embodiment, two rectangular beams are arranged under the box-type structure 71 and extend to the rear to form a sunken design, thereby providing an installation and fixing position for the lithium battery power device 112.

[0022] The upper surface of the hydraulic oil tank 14 is mounted with a plug-in power device 111, and the plug-in power device 111 includes a 220V plug-in power device and a 380V plug-in power device. One of the lithium battery power device 112, the 220V plug-in power device and the 380V plug-in power device is used as a power source to operate the actuator of the hydraulic system 10. In a specific embodiment, the actuator includes a telescopic oil cylinder and a valve body, and the actuator of the hydraulic system 10 can realize the movement of the whole machine, the boom extension and retraction, the rotation of the turntable 6, the lifting and lowering of the legs 8, etc.

[0023] Combination Figure 3 , the box-type structure 71 is further explained. In this embodiment, the six surfaces of the box-type structure 71 are welded to form a closed hollow box, and a through circular hole structure 711 is opened in the middle and rear position of the top surface and the bottom surface. The circumference of the circular hole structure 711 is closed by a bent annular plate. The circular hole structure 711 can be used for installing a slewing bearing and the passage of pipelines.

[0024] In addition, wire holes 713 are provided on the four sides of the box-type structure 71 and the side sides of the bent annular plate, and the hydraulic and electrical pipelines are arranged in the internal space through the wire holes 713, which not only fully utilizes the space, but also provides shielding and safety protection for the hydraulic and electrical pipelines.

[0025] Combination Figure 1-Figure 3 In this embodiment, the lithium battery power device 112 and the plug-in power device 111 (including the 220V plug-in power device and the 380V plug-in power device) are arranged at the front and rear positions of the frame structure 7 respectively, and the electrical control box 12 and the driver and other components are arranged on the left and right sides of the frame structure 7 respectively. The hydraulic and electrical pipelines are arranged through the inside of the box structure 71. In this embodiment, the three power sources can be integrated into the small space for getting off the aerial work platform through such a unique layout design. In addition, in this embodiment, the power unit of the 220V plug-in system and the power unit of the lithium battery system share a suction port from the oil tank, and the power unit of the 380V plug-in system and the additionally arranged emergency power unit share a suction port from the oil tank.

[0026] In summary, this embodiment integrates the battery mode and the plug-in mode into an aerial work platform to realize a pure electric working mode of the whole machine, meet the requirements of energy saving, environmental protection and low noise, and the plug-in mode can make up for the functional defects of the limited battery life of the battery mode and achieve long-term endurance. In another embodiment, the lithium battery can be replaced by an engine to realize a power source of engine + 220V plug-in + 380V plug-in to provide power for the aerial work platform. Because this method includes an engine, it is not environmentally friendly to a certain extent, and the engine working noise is relatively large, so it can be used as an alternative.

[0027] In this embodiment, the lithium battery power device 112, the 220V plug-in power device and the 380V plug-in power device can all independently serve as power sources to drive the aerial work platform to work. The three power supply systems (lithium battery power device 112, 220V plug-in power device and 380V plug-in power device) in this embodiment are isolated and independent of each other. Only one power supply system can work when in use. The lithium battery power device 112, the 220V plug-in power device and the 380V plug-in power device correspond to the lithium battery mode, the 220V plug-in mode and the 380V plug-in mode respectively when supplying power.

[0028] The switching of the three power modes is realized by selecting the three-speed switch. The power source can be switched by switching the gear. When the three-speed switch is selected in a certain power supply system, the whole machine master controller sends a connection command to the selected power supply system according to the selection signal, and sends a disconnection command to the other two power supply systems. Figure 4 shown.

[0029] Specifically, the lithium battery power device 112 includes a 220V charger, an 80V lithium battery, a motor driver 13, an AC pump motor, and a DC-DC converter. When the lithium battery power device 112 is determined as a power source, that is, the operation mode in the lithium battery mode is: the charger is used to charge the lithium battery, the lithium battery supplies power to the whole machine electrical system 11 and the control system through the DC-DC converter, the control system sends instructions to the motor driver 13 according to the external operation signal, the motor driver 13 controls the AC pump motor to work, drives the hydraulic actuator to operate, and the hydraulic system 10 realizes the whole machine action.

[0030] The 220V plug-in power device includes a 220V plug connector, a 220V AC pump motor, and an AC-DC converter. When the 220V plug-in power device is determined as the power source, that is, the operation mode in the 220V plug-in mode is as follows: the 220V plug connector is connected to the 220V mains and supplies power to the vehicle electrical system 11 and the control system through the AC-DC converter. The control system sends instructions to the motor according to the external operation signal, and the 220V AC pump motor works to drive the hydraulic actuator to operate, and the hydraulic system 10 realizes the whole machine operation.

[0031] The 380V plug-in power device includes a 380V plug connector, a frequency converter, a 380V AC pump motor, a transformer, and an AC-DC converter. When the 380V plug-in power device is determined as a power source, that is, the operation mode in the 380V plug-in mode is as follows: the 380V plug connector is connected to an external 380V mains power supply to power the vehicle electrical system 11 and the control system through the AC-DC converter of the transformer, and the control system sends a command to the motor according to the external operation signal, and the 380V AC pump motor works, driving the hydraulic actuator to operate, and the hydraulic system 10 realizes the whole machine operation.

[0032] This embodiment enables the three power supply modes of lithium battery mode, 220V plug-in mode, and 380V plug-in mode to each realize their functions, and the three modes can independently drive the straight-arm spider crawler aerial work platform to work. Example 2

[0033] Combination Figure 5 The present embodiment provides a spider crawler aerial work platform, which includes the three-power source device described in Example 1, and the aerial work platform includes a detachable aluminum alloy platform 1, a retractable curved arm 2, a six-section telescopic arm frame 3, a plate chain telescopic system 4, a winch cable hydraulic pipeline transportation system 5, a turntable 6, a frame structure 7, outriggers 8, and a crawler walking mechanism 9.

[0034] Combination Figure 6 The detachable aluminum alloy platform 11 can be hung on the detachable assembly structure of the crank arm and fixed by four nuts for easy assembly and disassembly.

[0035] Combination Figures 7 to 10 The retractable crank arm 2 includes a swing cylinder leveling mechanism 21, a platform swing mechanism 22, a platform disassembly assembly structure 23, a first luffing link 24, a second luffing link 25 and a crank arm main arm. The swing cylinder leveling mechanism 21 is used to be installed in conjunction with the hydraulic swing cylinder to achieve the platform leveling function. The platform swing mechanism 22 is installed in conjunction with the hydraulic swing cylinder to achieve the left and right swing function of the working platform. The platform disassembly assembly structure 23 is installed in conjunction with the working platform structure to facilitate the disassembly and assembly of the platform. The first luffing link 24 and the second luffing link 25 cooperate with the crank arm luffing cylinder to achieve the retraction of the crank arm within a range of nearly 180 degrees, so as to achieve a smaller storage length of the entire vehicle. The crank arm main arm is hingedly installed with the telescopic arm.

[0036] Combination Fig.11The six-section telescopic boom 3 includes a first section boom 31, a second section boom 32, a third section boom 33, a fourth section boom 34, a fifth section boom 35, and a sixth section boom 36. The six-section telescopic boom realizes synchronous telescopic function under the cooperation of the telescopic oil cylinder and the plate chain telescopic system 4. The telescopic boom is hingedly installed with the turntable 6. The plate chain telescopic system 4 includes a plate chain and a sprocket, which is used to pull the six-section telescopic boom to telescope synchronously.

[0037] Combination Fig.12 The cables and hydraulic pipelines of the winch cable hydraulic pipeline conveying system 5 are wound around it to realize the telescopic movement function of the pipeline. The conveying system is installed on the side of the telescopic arm 31.

[0038] Combination Fig.13 The turntable 6 is used to be installed and matched with the supporting boom, the luffing cylinder and other components, and the luffing cylinder can realize the luffing movement function of the boom. The turntable 6 is installed on the turbine worm slewing bearing to realize the 330-degree rotation of the turntable 6.

[0039] Combination Figure 3 The frame structure 7 is used to carry the upper vehicle components and the components of the hydraulic and electrical systems 11. The turntable 6 is connected to the frame through a worm gear type rotary reducer.

[0040] Combination Fig.14 The outrigger 8 is a parallelogram motion structure, and the function of raising and lowering the outrigger 8 is achieved through the action of the oil cylinder.

[0041] Combination Fig.15 The crawler walking mechanism 9 comprises a bridge structure 91, a rubber crawler 92, a wheel train 93 and other parts, and cooperates with the walking motor to realize the walking function of the whole machine.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A three-power source system for installation on a frame structure (7) of an aerial work platform, characterized in that: include: A box-shaped structure (71) is arranged on the frame structure (7); a rectangular beam structure (714) extending toward the rear of the frame structure (7) is arranged on the bottom surface of the box-shaped structure (71), and a hanging structure (712) is arranged on the top surface of the front end of the box-shaped structure (71); A hydraulic oil tank (14) is mounted on the mounting structure (712), and the hydraulic oil tank (14) is used to provide hydraulic oil for the hydraulic system (10) of the aerial work platform; A lithium battery power device (112) is installed on the rectangular beam structure (714); A plug-in power device, including a 220V plug-in power device and a 380V plug-in power device; the plug-in power device is installed on the upper surface of the hydraulic oil tank (14); One of the lithium battery power device (112), the 220V plug-in power device and the 380V plug-in power device is used as a power source to drive the actuator of the hydraulic system (10) to operate.

2. The three-power source device according to claim 1, characterized in that: The box-shaped structure (71) is hollow inside; the rectangular beam structure (714) comprises two mutually parallel matrix beams, and downward step structures are formed on both matrix beams.

3. The three-power source device according to claim 2, characterized in that: Also includes: A circular hole structure (711) passes through the top surface and the bottom surface of the box-shaped structure (71), and the circular hole structure (711) is closed by a bent annular plate; Threading holes (713) are formed on the side elevations of the bent annular plate and on the surrounding elevations of the box-shaped structure (71); The hydraulic and electrical pipelines connecting the lithium battery power source, the 220V plug-in power source, the 380V plug-in power source and the hydraulic system (10) are passed through the threading hole (713) and the circular hole structure (711).

4. The three-power source device according to claim 1, characterized in that: Also includes: A three-speed switch comprises three gears, wherein the three gears correspond to the lithium battery power device (112), the 220V plug-in power device and the 380V plug-in power device respectively; the three-speed switch is used to switch gears to switch power sources.

5. The three-power source device according to claim 1, characterized in that: An electrical control box (12) is arranged on one side of the box-type structure (71), and a transformer and a motor driver (13) are arranged on the other side.

6. The three-power source device according to claim 5, characterized in that: The lithium battery power device (112) comprises a charger, a lithium battery, a motor driver (13) and an AC pump motor. The charger is used to charge the lithium battery, and the motor driver (13) is used to control the AC pump motor to drive the actuator of the hydraulic system (10) to operate.

7. The three-power source device according to claim 1, characterized in that: The 220V plug-in power device comprises a 220V plug connector and a 220V AC pump motor, wherein the 220V plug connector is used to connect to an external 220V AC power supply so as to enable the 220V AC pump motor to operate and drive the actuator of the hydraulic system (10) to operate.

8. The three-power source device according to claim 1, characterized in that: The 380V plug-in power device comprises a 380V plug connector, a frequency converter, and a 380V AC pump motor; the 380V plug connector is used to connect to an external 380V mains electricity to operate the 380V AC pump motor through the frequency converter and drive the actuator of the hydraulic system (10) to operate.

9. The three-power source device according to claim 1, characterized in that: The actuator comprises a telescopic oil cylinder and a valve body.

10. A spider crawler aerial work platform, characterized in that: A three-power source system comprising any one of claims 1-8.

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