High-altitude operation device

Abstract

A high-altitude operation device belongs to the technical field of high-altitude operation equipment, and comprises a fixed frame body extending along the height direction of the high-altitude operation device; the workbench supporting frame is movably connected with the fixed frame body in the height direction; the threaded connection transmission mechanism comprises a first threaded part and a second threaded part, the first threaded part extends along the workbench supporting frame in the height direction of the high-altitude operation device and is connected with the workbench supporting frame, the second threaded part is connected with the fixing frame body, and the first threaded part and the second threaded part are connected in a threaded fit mode; the manual reversing driving mechanism is rotatably supported on the workbench support and is used for manually inputting a driving torque; the first threaded part of the threaded connection transmission mechanism is driven to rotationally ascend or descend relative to the second threaded part, and the workbench supporting frame is driven to move up and down relative to the fixed frame body in the height direction of the high-altitude operation device. The aerial work device is simple in structure, easy to assemble and convenient to maintain and repair.

Description

Technical Field

[0001] This application belongs to the technical field of high-altitude operation equipment, and particularly relates to a high-altitude operation device. Background Art

[0002] With the acceleration of the industrialization process, the demand for high-altitude operation devices in the industrial field is increasing continuously. For example, in the power industry, high-altitude operation devices are required for the erection, inspection, and maintenance of transmission lines; in the petrochemical industry, high-altitude operation devices are needed for the installation, inspection, and cleaning of tall equipment, etc.

[0003] The high-altitude operation device generally realizes the lifting of the operation platform through a driving mechanism. In the related art, most of the driving mechanisms use pulleys and belts, gears and racks, or hydraulic devices, etc. to drive the operation platform to lift. However, in these driving methods, the overall structure of the driving mechanism is complex, the assembly time is long, and it is difficult to perform subsequent maintenance and replace parts, which brings great inconvenience to technicians when using high-altitude operation devices. Summary of the Invention

[0004] To solve at least a part of the above problems, an embodiment of this application provides a high-altitude operation device, including: a fixed frame body that extends along the height direction of the high-altitude operation device; a workbench support frame that is movably connected to the fixed frame body along the height direction and is provided with a workbench; a threaded connection transmission mechanism, the threaded connection transmission mechanism includes a first threaded portion that extends along the workbench support frame in the height direction of the high-altitude operation device and is connected to the workbench support frame, and a second threaded portion that is connected to the fixed frame body, and the first threaded portion is threadedly engaged with the second threaded portion; and a manual reversing drive mechanism that is rotatably supported on the workbench support, the manual reversing drive mechanism is used to manually input a driving torque to drive the first threaded portion of the threaded connection transmission mechanism to rotate up or down relative to the second threaded portion and drive the workbench support frame to move up and down along the height direction of the high-altitude operation device relative to the fixed frame body.

[0005] The aerial work device provided by the embodiment of the present application has a simple structure, is easy to assemble, and convenient for maintenance and repair. The aerial work device of the embodiment of the present application can realize the lifting of the workbench only by setting a manual driving mechanism and a threaded connection transmission mechanism to drive the workbench support frame to slide up and down relative to the fixed frame body, thus simplifying the structure of the aerial work device. In the threaded connection transmission mechanism, the workbench support frame can be driven to slide up and down along the fixed frame body by the threaded cooperation of the second threaded portion and the first threaded portion, simplifying the threaded connection transmission mechanism; during the assembly of the threaded connection transmission mechanism, no adjustment is required, and only the threaded connection of the second threaded portion and the first threaded portion needs to be completed, so it is easy to assemble; in addition, the threaded connection transmission mechanism is driven by a threaded transmission method, achieving the technical effects of simple structure, reliable, stable and high transmission efficiency, and at the same time facilitating subsequent maintenance and repair and extending the service life. Description of the Drawings

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0007] Figure 1 Structural schematic diagram of an aerial work device according to some embodiments of the present application;

[0008] Figure 2 Cross-sectional view of an aerial work device according to some embodiments of the present application;

[0009] Figure 3 Is Figure 2 Enlarged view at A;

[0010] Figure 4 Partial structural schematic diagram of an aerial work device according to some embodiments of the present application;

[0011] Figure 5 Internal structural schematic diagram when the workbench support frame is stored in the fixed frame body according to some embodiments of the present application;

[0012] Figure 6 Structural schematic diagram of a brake assembly installed on the chassis according to some embodiments of the present application.

[0013] Reference numerals:

[0014] 100, aerial work device;

[0015] 11, fixed frame body; 111, first roller; 12, workbench support frame; 121, second roller; 2, workbench; 3, support member; 31, connecting frame;

[0016] 4. Thread connection drive mechanism; 41. Lead screw seat; 42. Lead screw; 43. Fixed seat;

[0017] 5. Manual reversing drive mechanism; 51. First bevel gear; 52. Second bevel gear; 53. Rocking handle; 531. Block; 54. First gear; 55. Second gear; 56. Disc; 561. Card slot;

[0018] 6. Slide block; 7. Slide groove; 8. Chassis; 81. Locking slide groove; 9. Wheel; 91. Card plate; 911. Bayonet; 10. Connecting rod; 20. Rocker; 30. Limit pin; 40. Spring. Detailed implementation manner

[0019] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0020] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to mean a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements.

[0021] In the related art, the aerial work device realizes the lifting of the workbench through a drive mechanism, and most of the drive mechanisms use pulleys and belts, gears and racks, or hydraulic devices, etc. to drive the work platform to lift. However, in these drive methods, there are technical problems such as the overall complex structure of the drive mechanism, long assembly time, and difficult subsequent maintenance and repair.

[0022] To at least partially solve the above technical problems, an embodiment of the present application provides an aerial work device 100. For illustrative and non-limiting purposes, the aerial work device 100 provided by the embodiment of the present application will be described below in conjunction with the accompanying drawings.

[0023] Figure 1 FIG. 3 is a schematic structural view of the aerial work device 100 provided according to some embodiments of the present application. Figure 2 FIG. 4 is a cross-sectional view of the aerial work device 100 provided according to some embodiments of the present application. Figure 3 is Figure 2 an enlarged view at A; Figure 4 FIG. 5 is a partial schematic structural view of the aerial work device 100 provided according to some embodiments of the present application; Figure 5 FIG. 6 is a schematic internal structure view when the workbench support frame is received in the fixed frame according to some embodiments of the present application; Figure 6 FIG. 7 is a schematic structural view of the brake assembly mounted on the chassis according to some embodiments of the present application.

[0024] As Figures 1-3 shown, this embodiment provides an aerial work device 100, which includes a fixed frame body 11, a workbench support frame 12, a threaded connection transmission mechanism 4 and a manual reversing drive mechanism 5.

[0025] The fixed frame body 11 is a support structure extending along the height direction of the aerial work device 100. According to the embodiments of the present application, as Figures 1-3 shown, the fixed frame body 11 is a hollow columnar structure extending along the height direction (the H direction indicated by the arrow in the drawing) of the aerial work device 100. Adopting a hollow columnar structure can reduce the weight of the entire aerial work device 100 and reduce the production materials of the fixed frame body 11.

[0026] In some other embodiments, the fixed frame body 11 can also be a truss structure. Adopting a truss structure for the fixed frame body 11 can make the support of the fixed frame body 11 more stable and not prone to shaking during the lifting process of the workbench.

[0027] In this embodiment, the height of the fixed frame body 11 is generally greater than 1 m, and is used to support the workbench support frame 12 and the workbench 2 to be lifted to a preset position for aerial work. During the aerial work process of the aerial work device, considering that the fixed frame body 11 needs to support the workbench support frame 12 and the workbench 2, therefore, the fixed frame body 11 generally adopts high-strength materials, such as: steel, aluminum alloy, composite materials, etc. When selecting materials, it may be necessary to select materials according to the actual stress analysis of the fixed frame body 11.

[0028] According to the embodiments of the present application, as Figures 1-4As shown, the workbench support frame 12 is a columnar structure extending along the height direction of the aerial work device 100 (the X direction indicated by the arrow in the attached drawing). According to the structural form of the fixing frame body 11 provided in the above embodiments, in the embodiments of the present application, the workbench support frame 12 can be arranged on one side of the fixing frame body 11, or can be sleeved around the fixing frame body 11, as long as it can be ensured that it is adapted to the fixing frame body 11 and is movably connected to the fixing frame body 11 along the height direction. As Figure 2 As shown, both the fixing frame body 11 and the workbench support frame 12 are hollow columnar structures, and the workbench support frame 12 is sleeved outside the fixing frame body 11. The use of hollow columnar structures for both the fixing frame body 11 and the workbench support frame 12 can reduce the weight of the entire aerial work device 100, reduce the manufacturing materials of the workbench support frame 12, and lower the production cost. Sleeving the workbench support frame 12 outside the fixing frame body 11 can not only adjust the range of the lifting height of the workbench support frame 12, but also, after the aerial work device 100 completes the operation, the fixing frame body 11 can be received inside the workbench support frame 12, effectively saving the occupied space of the aerial work device 100.

[0029] In some embodiments, during the aerial work process of the aerial work device 100, considering that the workbench support frame 12 needs to lift and support the workbench 2, the material of the workbench support frame 12 generally also uses high-strength materials, such as: steel, aluminum alloy, composite materials, etc. When selecting materials, it may be necessary to select materials based on the stress analysis of the workbench support frame 12.

[0030] The workbench support frame 12 is a structure for supporting the workbench 2. The workbench 2 can be arranged on the workbench support frame 12 by a fixed connection method. Or, the workbench support frame 12 may include multiple workbench installation parts for installing the workbench, and the workbench 2 is detachably installed on each workbench installation part.

[0031] The workbench support frame 12 is movably connected to the fixing frame body 11, thereby allowing the workbench support frame 12 to move up or down relative to the fixing frame body 11 along the height direction of the aerial work device 100, thereby changing the height position of the workbench 2 relative to the support surface (ground).

[0032] In some specific embodiments, the workbench support frame 12 further includes a first workbench installation part and a second workbench installation part. Among them, relative to the first workbench installation part, the second workbench installation part is located at a position upward along the height direction of the aerial work device 100. Therefore, when the workbench 2 is installed on the first workbench installation part or the second workbench installation part, it is allowed for the workbench 2 to reach different working height ranges.

[0033] In this document, the height direction of the aerial work device 100 refers to the direction that defines the height of the aerial work device 100, which is generally a direction substantially perpendicular to the support surface (ground) when the aerial work device 100 is operating, and reference can be made to Figure 1 the H direction shown. Moving upward along the height direction of the aerial work device 100 means moving in the height direction of the aerial work device 100 along the direction away from the support surface (ground). Moving downward along the height direction of the aerial work device 100 means moving in the height direction of the aerial work device 100 along the direction close to the support surface (ground). Therefore, when moving upward along the height direction of the aerial work device 100, the height of the workbench support frame 12 or the workbench relative to the support surface (ground) increases. Conversely, when moving downward along the height direction of the aerial work device 100, the height of the workbench support frame 12 or the workbench relative to the support surface (ground) decreases.

[0034] In some embodiments, as shown in the attached Figure 2 figure, sliders 6 are arranged on both sides of the workbench support frame 12. The sliders 6 are slidable on the fixed frame body 11, which avoids the shaking of the aerial work device 100 when the workbench support frame 12 slides relative to the fixed frame body 11.

[0035] In one embodiment, the sliders 6 are slidable on the outer wall of the fixed frame body 11. The sliders 6 are self-lubricating components, and the fixed frame body 11 is made of a highly wear-resistant material, such as ultra-high molecular weight polyethylene. The sliders 6 are self-lubricating components and slide directly on the outer wall of the fixed frame body 11, which can not only simplify the structure but also avoid damage to the surface of the fixed frame body 11.

[0036] In one embodiment, the fixed frame body 11 may be provided with a chute 7, and at least part of the slider 6 is installed in the chute 7 to slidably cooperate with the chute 7, so that the stroke of the slider 6 is more precise during the sliding process.

[0037] In some other embodiments, chutes 7 are arranged on both sides of the workbench support frame 12, and the fixed frame body 11 is provided with sliders 6. At least part of the sliders 6 is installed in the chutes 7 to slidably cooperate with the chutes 7.

[0038] In one embodiment, the slider 6 can be a strip-shaped structure extending along the length direction of the fixed frame body 11 or the workbench support frame 12. In other embodiments, the slider 6 can also be a plurality of spaced block-shaped structures. In one embodiment, the chute 7 can be a groove extending along the length direction of the fixed frame body 11 or the workbench support frame 12. In other embodiments, the chute 7 can also be a plurality of spaced grooves.

[0039] Sliders 6 are provided on both sides of one of the fixed frame body 11 and the workbench support frame 12, and a sliding groove 7 is provided on the other of the fixed frame body 11 and the workbench support frame 12. The slider 6 can slide within the sliding groove 7. By respectively providing the sliding groove 7 and the slider 6 on the fixed frame body 11 and the workbench support frame 12, when the workbench support frame 12 slides up and down relative to the fixed frame body 11 in the height direction of the aerial work device, it can play a guiding role for the workbench support frame 12, making the sliding of the workbench support frame 12 smoother, making it more labor-saving for technicians during operation, and avoiding problems such as dislocation or sliding deviation during the relative sliding of the workbench support frame 12 along the fixed frame body 11.

[0040] In some embodiments, as Figure 2 shown, the fixed frame body 11 and the workbench support frame 12 are also provided with rollers to facilitate the up and down sliding of the workbench support frame 12 relative to the fixed frame body 11. In a specific embodiment, a first roller 111 is provided at one end of the fixed frame body 11, and a second roller 121 is provided at one end of the workbench support frame 12. The first roller 111 is provided on the side of the fixed frame body 11 facing the workbench support frame 12 and can roll along the workbench support frame 12, and the second roller 121 is provided on the side of the workbench support frame 12 facing the fixed frame body 11 and can roll along the fixed frame body 11.

[0041] As Figure 2 shown, the first roller 111 is provided on both sides of the upper end of the fixed frame body 11, and the second roller 121 is provided on both sides of the lower end of the workbench support frame 12, so as to ensure that during the entire stroke of the workbench support frame 12 sliding up and down in the height direction of the aerial work device 100, the first roller 111 always rolls along the workbench support frame 12, and the second roller 121 always rolls along the fixed frame body 11.

[0042] In other embodiments, according to the actual working conditions, the number of the first roller 111 and the second roller 121 can be adaptively selected to enhance the smoothness of the sliding of the workbench support frame 12 relative to the fixed frame body 11. In this regard, the number of the first roller 111 and the second roller 121 is not limited in this embodiment.

[0043] When the workbench support frame 12 slides up and down with the lead screw 42, the first roller 111 rolls on the fixed frame body 11, and at the same time, the second roller 121 rolls on the workbench support frame 12. When the workbench support frame 12 slides up and down along the fixed frame body 11 in the height direction of the aerial work device 100, the friction between the workbench support frame 12 and the fixed frame body 11 is rolling friction, which reduces the friction between the workbench support frame 12 and the fixed frame body 11 and reduces the operation intensity of technicians.

[0044] According to an embodiment of the present application, as Figures 2-3 and Figure 5 shown, the threaded connection drive mechanism 4 includes a first threaded portion extending along the workbench support frame 12 in the height direction of the aerial work device 100 and connected to the workbench support frame 12, and a second threaded portion connected to the fixed frame body 11. The first threaded portion and the second threaded portion are connected by threaded engagement.

[0045] In an embodiment of the present application, the first threaded portion extends along the workbench support frame 12 in the height direction of the aerial work device 100 and is connected to the workbench support frame 12. The second threaded portion and the first threaded portion are connected by threaded engagement. When the second threaded portion rotates relative to the first threaded portion, under the driving action of the screw, the first threaded portion linearly moves relative to the second threaded portion. At the same time, the workbench support frame 12 slides along the fixed frame body 11 with the first threaded portion, so as to realize the lifting of the workbench arranged on the workbench support frame 12. The linear movement of the second threaded portion refers to the up and down movement along the height direction of the aerial work device 100. Such a setting allows the workbench support frame 12 and the workbench 2 connected to the first threaded portion to reach different working height ranges.

[0046] According to an embodiment of the present application, as Figure 1 shown, the first threaded portion includes a lead screw seat 41 and a lead screw 42, which are arranged on the workbench support frame 12. Both ends of the lead screw 42 are rotatably arranged on the lead screw seat 41 and connected to the manual reversing drive mechanism 5. In one embodiment, the lead screw seat 41 may be a structure extending along the workbench support frame 12 in the height direction of the aerial work device 100. In other embodiments, the lead screw seat 41 may be provided with other forms of structures. For example, the lead screw seat 41 includes two independent end seats, and both ends of the lead screw are respectively connected to the two end seats.

[0047] In one embodiment, the lead screw seat 41 may be fixedly connected to the workbench support frame 12. In other embodiments, the lead screw 42 may be detachably mounted on the workbench support frame 12 through other mounting members, so as to facilitate maintenance.

[0048] In some embodiments, the lead screw seat 41 is fixedly connected to the workbench support frame 12, and the fixed seat 43 is fixedly connected to the fixed frame body 11. When assembling the threaded connection drive mechanism 4, only need to connect the lead screw seat 41 to the workbench support frame 12, connect the fixed seat 43 to the fixed frame body 11, and connect the lead screw 42 to the manual switching drive mechanism, without further adjustment, making the threaded connection drive mechanism 4 easy to assemble and also convenient for subsequent maintenance and repair.

[0049] The installation method of the lead screw seat 41 and the lead screw 42 can be selected according to the actual load and working conditions. In some embodiments, the lead screw seat 41 includes a fixed end seat and a support end seat. Bearings are built into both the fixed end seat and the support end seat. The first end of the lead screw 42 is fixedly connected to the bearing in the fixed end seat, and the second end of the lead screw 42 is placed in the bearing of the support end seat. Specifically, the fixed end seat is arranged at the lower end of the workbench support frame, and the support seat is placed at the upper end of the workbench support frame 12 to facilitate the manual reversing drive mechanism to easily drive the lead screw 42; in addition, one or two bearings can be selected to be arranged in the fixed end seat. The number of bearings in the fixed end seat can be adaptively adjusted according to the size of the load. When the load is large, two bearings can be arranged in the fixed end seat to increase the rigidity of the lead screw seat 41.

[0050] In some other embodiments, in order to adapt to the situation of a large load, the lead screw seat 41 includes two fixed end seats. Bearings are built into both of the two fixed end seats. The two ends of the lead screw 42 are respectively fixedly connected to the bearings in the two fixed end seats; in addition, one or two bearings can be selected to be arranged in the fixed end seat. The number of bearings in the fixed end seat can be adaptively adjusted according to the size of the load. When the load is large, two bearings can be arranged in the fixed end seat to increase the transmitted rigidity, ensure the accuracy, and improve the reliability and service life of the aerial work device 100.

[0051] According to the form of the lead screw seat 41 provided by the above embodiments, when the lead screw seat 41 includes two fixed end seats, the two fixed end seats are coaxially arranged; when the lead screw seat 41 includes one fixed end seat and one support end seat, the fixed end seat and the support end seat are coaxially arranged to ensure the linear accuracy of the installation of the lead screw 42 and the lifting accuracy of the aerial work device 100.

[0052] The bearings provided by the above embodiments can be angular contact bearings or deep groove ball bearings, which are used to bear radial and axial forces simultaneously. In other embodiments, other types of bearings can also be selected.

[0053] According to the second thread portion provided by the embodiments of the present application, as Figure 4 shown, the second thread portion includes a fixed seat 43 that is threadedly engaged with the lead screw 42. The fixed seat 43 is arranged on the fixed frame 11. In this embodiment, a lead screw nut is arranged on the fixed seat 43, and the lead screw nut is threadedly engaged with the lead screw 42.

[0054] In this embodiment, the threads of the lead screw nut and the lead screw 42 can be trapezoidal threads to increase the rigidity of the lead screw 42 and the lead screw nut, so as to adapt to the working scenario of the aerial work device 100 lifting a large load.

[0055] In this embodiment, the lead screw 42 and the fixed seat 43 of the threaded connection drive mechanism 4 are arranged between the workbench support frame 12 and the fixed frame body 11, and the sliding connection between the workbench support frame 12 and the fixed frame body 11 can be driven through the threaded fit between the lead screw 42 and the fixed seat 43. By the threaded fit connection between the lead screw 42 and the lead screw nut of the fixed seat 43, the workbench support frame 12 can be driven to slide up and down along the fixed frame body 11, simplifying the threaded connection drive mechanism 4; during the assembly of the threaded connection drive mechanism 4, no adjustment is required, only the threaded fit connection between the lead screw 42 and the lead screw nut of the fixed seat 43 needs to be completed, making it easy to assemble; in addition, the threaded drive method is used to achieve the drive of the threaded connection drive mechanism 4, achieving the technical effects of simple structure, reliable, stable drive and high drive efficiency, while also facilitating subsequent maintenance and repair, and extending the service life of the aerial work device 100.

[0056] In addition, the threaded fit connection between the lead screw 42 and the fixed seat 43 in the threaded connection drive mechanism 4 drives the workbench support frame 12 and the workbench 2 to move up and down in the height direction of the aerial work device 100, making the drive of the threaded connection drive mechanism 4 smoother and more stable, and the lifting of the workbench 2 more stable, ensuring the safety of the operator during aerial work.

[0057] According to an embodiment of the present application, the aerial work device 100 further includes a manual reversing drive mechanism 5 rotatably supported on the workbench support frame 12. The manual reversing drive mechanism 5 is used to manually input a driving torque to drive the first threaded portion of the threaded connection drive mechanism 4 to rotate up or down relative to the second threaded portion and drive the workbench support frame 12 to move up and down along the height direction of the aerial work device 100 relative to the fixed frame body 11. As Figure 1 shown, the manual reversing drive mechanism 5 is connected to the lead screw 42. When a driving torque is manually input, the manual reversing drive mechanism 5 drives the lead screw 42 to engage and drive with the lead screw nut of the fixed seat 43 and rotate up or down relative to the fixed seat 43, thereby driving the workbench support frame 12 to move up and down along the height direction of the aerial work device 100 relative to the fixed frame body 11.

[0058] Both the manual reversing drive mechanism 5 and the workbench are arranged on the workbench support frame 12 and slide up and down synchronously with the workbench support frame 12 relative to the fixed frame body 11, which not only facilitates the technician to operate the manual reversing drive mechanism conveniently without additional matching devices, but also simplifies the structure of the aerial work device 100.

[0059] In some embodiments, such as Figures 1-3As shown, the manual reversing drive mechanism 5 includes a first bevel gear 51, a second bevel gear 52 and a crank 53. The first bevel gear 51 is arranged at one end of the lead screw 42 and coaxially with the lead screw 42. The second bevel gear 52 is rotatably arranged on the workbench support frame 12 and meshes with the first bevel gear 51. The crank 53 is configured to manually input a driving torque to drive the second bevel gear 52 to rotate. In this embodiment, the crank 53 can directly drive the second bevel gear 52 or drive the second bevel gear 52 through other structures.

[0060] In this embodiment, as Figure 2 shown, the first bevel gear is sleeved on one end of the lead screw 42 and fixedly connected to the lead screw 42. The first bevel gear and the lead screw 42 can be fixed by shaft key cooperation, can also be fixed by pins, or can be fixed by other means. In other embodiments, the fixing method of the first bevel gear and the lead screw 42 can be selected according to the load of the aerial device.

[0061] When the manual reversing drive mechanism 5 inputs a driving torque in the first direction, it drives the lead screw 42 to rotate in the second direction, so that the lead screw 42 rotates and rises relative to the lead screw nut of the fixed seat 43 and drives the workbench support frame 12 to slide upward along the fixed frame body 11, thereby realizing the rise of the workbench 2; when the manual reversing drive mechanism 5 inputs a driving torque in the direction opposite to the first direction, it drives the lead screw 42 to rotate in the direction opposite to the second direction, so that the lead screw 42 rotates and descends relative to the lead screw nut of the fixed seat 43 and drives the workbench support frame 12 to slide downward along the fixed frame body 11, thereby realizing the descent of the workbench 2. Among them, the first direction refers to Figure 4 the arrow direction in Figure 5 and the second direction refers to the arrow direction in

[0062] The manual reversing drive mechanism 5 and the work platform are both arranged on the workbench support frame 12 and slide up and down synchronously with the workbench support frame 12 relative to the fixed frame body 11, which not only facilitates the technicians to operate the manual reversing drive mechanism 5 conveniently without additional cooperation with other devices, but also simplifies the structure of the aerial work device 100.

[0063] In addition, in some places where strict requirements are imposed on the device, such as some electronic equipment production workshops and optical instrument manufacturing places where no electricity and no oil are required, strict requirements are put forward for the drive mechanism of the aerial work device 100. However, for the aerial work device 100 provided in this embodiment, the workbench support frame 12 is driven to slide up and down relative to the fixed frame body 11 through the manual reversing drive device and the linear drive device, thereby driving the lifting of the workbench 2. During the whole driving process, the use of oil and electricity is reduced, and even the use of oil and electricity is avoided, meeting the requirements of some places with strict requirements for the aerial work device 100.

[0064] In one embodiment, when the crank 53 directly drives the second bevel gear 52, the crank 53 is fixedly connected to the second bevel gear 52. At this time, when the crank 53 is driven to rotate in the first direction, the crank 53 drives the second bevel gear 52 to rotate, and the second bevel gear 52 is meshed with the first bevel gear 51 for transmission, so that while the first bevel gear rotates, the screw 42 is driven to rotate in the second direction and to cooperate with the fixed seat 43 for transmission, and rotates and rises relative to the fixed seat 43, and the screw 42 rotates and rises to drive the workbench support frame 12 to slide upward along the fixed frame body 11, thereby realizing the rise of the workbench 2; when the crank 53 is driven in the opposite direction of the first direction, the crank 53 drives the second bevel gear 52 to rotate in the opposite direction and to mesh with the first bevel gear 51 in the opposite direction, so that while the first bevel gear 51 rotates, the screw 42 is driven to rotate in the direction opposite to the second direction and to cooperate with the fixed seat 43 for transmission, and rotates and descends relative to the fixed seat, and the screw 42 rotates and descends to drive the workbench support frame 12 to slide downward along the fixed frame body 11, thereby realizing the descent of the workbench 2.

[0065] In one embodiment, when the crank 53 drives the second bevel gear 52 through other structures, the manual reversing drive mechanism 5 further includes: a disc 56 , a first rotating shaft, a first gear 54 , a second rotating shaft, and a second gear 55 .

[0066] The disc 56 is fixed on the workbench support frame 12, and an installation space is set between the disc 56 and the workbench support frame 12. The second bevel gear 52 is set on the side of the disc 56 close to the workbench support frame 12 and is located in the installation space. The workbench support frame 12 is provided with a notch at a position corresponding to the second bevel gear 52, and the notch is opposite to the installation space, so that the second bevel gear 52 can partially extend into the workbench support frame 12 and mesh with the first bevel gear 51.

[0067] The first end of the first rotating shaft is rotatably disposed on the workbench support frame 12, and the second end of the rotating shaft passes through the disc 56. The first gear 54 is located on the side of the disc 56 away from the workbench support frame 12 and is disposed at the second end of the first rotating shaft, and the first gear 54 is fixedly connected to the crank 53. The crank 53 and the first gear 54 can be disposed at the second end of the first rotating shaft to drive the first rotating shaft to rotate, and when the crank 53 is rotated, the first gear 54 rotates accordingly; or the crank 53 and the first gear 54 can be directly fixed, and when the crank 53 is rotated, the first gear 54 also rotates accordingly.

[0068] In one embodiment, when the rocker 20 and the first gear 54 are arranged at the second end of the first rotating shaft, the rocker 53 is arranged at the side of the first gear 54 away from the disc 56, and a clamping block 531 is arranged at one end of the rocker 53. The disc 56 is provided with a flange at its periphery, and a plurality of clamping grooves 561 are arranged circumferentially on the flange, and the clamping block 531 is adapted to the clamping grooves 561. An elastic member is arranged between the first end of the first rotating shaft and the workbench support frame 12. When the crank 53 is driven to rotate and the workbench 2 is raised or lowered to the preset position, the crank 53 and the first gear 54 are pressed, and the crank 53 and the first gear 54 slide on the first rotating shaft. At this time, the elastic member is compressed until the block 531 at one end of the crank 53 is inserted into the slot 561. At this time, the preset position is locked; when the position of the workbench 2 needs to be adjusted, the crank 53 is pulled along the axial direction of the first rotating shaft to make the block 531 leave the slot 561. At this time, the elastic member restores its own deformation, and the crank 53 can be driven to rotate again.

[0069] The second rotating shaft is rotatably disposed on the disk 56, and the second bevel gear 52 is disposed at the first end of the second rotating shaft. The second gear 55 is meshed with the first gear 54, is located on the side of the disk 56 away from the workbench support frame 12, and is disposed at the second end of the second rotating shaft. When the second gear 55 is driven by the first gear 54, the second rotating shaft is driven to rotate, and the second bevel gear 52 rotates accordingly.

[0070] In this embodiment, when the crank 53 is driven in the first direction, the first gear 54 and the second gear 55 transmit the drive in the first direction to the second bevel gear 52, the second bevel gear 52 meshes with the first bevel gear 51 and drives the first bevel gear 51, the first bevel gear 51 drives the lead screw 42 to rotate in the second direction, the lead screw 42 and the fixed seat 43 are threaded, and the drive in the second direction is changed to an upward linear drive, thereby realizing the rise of the workbench 2. The driving process when the workbench 2 moves downward is opposite to the driving process when it moves upward, and will not be repeated here.

[0071] During the cooperative driving of the manual reversing drive mechanism 5 and the threaded connection transmission mechanism 4, the various components in the drive mechanism and the threaded connection transmission mechanism 4 are concentrated and arranged closely, and the assembly space is compact, making the aerial work device 100 easy to assemble and convenient for maintenance.

[0072] The aerial work device 100 provided in this embodiment can be directly installed in a workplace. For example, the fixed frame 11 is directly fixed on the ground, and the workbench support frame 12 slides up and down relative to the fixed frame 11, thereby realizing the lifting and lowering of the workbench 2.

[0073] like Figures 1-2 and Figure 6As shown, the high-altitude device provided in one embodiment may further include a chassis 8 and wheels 9, the fixed frame 11 is fixedly connected to the chassis 8, and the wheels 9 are arranged on the chassis 8. In this way, when using high-altitude operations, it can be moved at any time according to the operation tasks.

[0074] When the technicians are working on the aerial work device 100, due to the heavy weight of the fixed frame 11 and the workbench support frame 12, the vehicle body is easily impacted during the lifting and lowering of the workbench support frame 12, thereby causing the vehicle body to shake or even move, which is very detrimental to the safety of the technicians. For this reason, in one embodiment, the aerial work device 100 is also provided with a brake assembly, which is configured to automatically extend and lock the wheels 9 when the workbench support frame 12 starts to rise, and to contract and unlock the wheels 9 under the pressure of the workbench support frame 12 when the workbench support frame 12 falls and contacts the brake assembly. The brake assembly is triggered by the lifting and lowering of the workbench support frame 12 to lock or unlock the wheels 9, so that the wheels 9 are in a locked state during the lifting and lowering of the workbench 2 with the workbench support frame 12, and the safety of the technicians is guaranteed.

[0075] In one embodiment, if Figure 6 As shown, the brake assembly includes: a connecting rod 10, a rocker 20, a stop pin 30 and a spring 40. The first end of the connecting rod 10 is slidably connected to the side wall of the chassis 8 and is located below one end of the workbench support frame 12 close to the chassis 8; the first end of the rocker 20 is rotatably connected to the second end of the connecting rod 10; the first end of the stop pin 30 is fixedly connected to the second end of the rocker 20, and the second end of the stop pin 30 is configured to be engaged with the wheel 9; the first end of the spring 40 is connected to the chassis 8, and the second end of the spring 40 is connected to the rocker 20.

[0076] When the workbench support frame 12 falls, it contacts the connecting rod 10 and applies pressure to it, causing the connecting rod 10 to contract and pull the rocker 20 to swing, while compressing the spring 40, and the limit pin 30 at the second end of the rocker 20 is lifted upward and disengaged from the bayonet 911 of the clamping plate 91, the tire brake is released, and the entire aerial work device 100 can be pushed normally. When the workbench support frame 12 rises, the connecting rod 10 releases the pressure, and at the same time the spring 40 restores its own deformation and pushes the rocker 20 to extend. The rocker 20 pushes the connecting rod 10 to extend. At this time, the limit pin 30 at the second end of the rocker 20 moves downward and is stuck in the bayonet 911, thereby locking the tire from rotating. During the entire process of the workbench support frame 12 rising relative to the fixed frame 11, the entire aerial work device 100 cannot move, ensuring the safety of personnel.

[0077] A locking chute 81 is provided on the side wall of the chassis 8. A clamping plate 91 is provided on the wheel 9. A plurality of clamping openings 911 are circumferentially formed in the clamping plate 91. The first end of the connecting rod 10 is slidable within the locking chute 81, and the limit pin 30 can be clamped within the clamping opening 911. The locking chute 81 provided on the side wall of the chassis 8 plays a role in limiting and guiding the sliding of the connecting rod 10, thereby ensuring the smooth sliding of the connecting rod 10 and limiting the connecting rod 10, and enabling the workbench support frame 12 to come into contact with the connecting rod 10 in time when sliding downward. The clamping plate 91 is provided on the wheel 9, and a plurality of clamping openings 911 are circumferentially formed in the clamping plate 91, so that the wheel 9 can be locked regardless of its position, thus facilitating the locking of the wheel 9 and improving the effectiveness of locking.

[0078] In one embodiment, the aerial work device 100 further includes a telescopic support member 3. The first end of the support member 3 is fixedly connected to the chassis 8, and the second end of the support member 3 is connected to the workbench support frame 12. The support member 3 can provide a certain supporting force and lift and lower synchronously with the second outer arm, enabling the crank 53 to use a smaller force to achieve the up and down sliding of the workbench support frame 12 relative to the fixed frame body 11, so that technicians can operate the crank 53 labor-savingly.

[0079] In one embodiment, the number of support members 3 can be appropriately increased according to the height of the aerial work device 100. For example, referring to Figure 5 , two support members 3 are provided on the aerial work device 100, and the two support members 3 are connected by a connecting frame 31, so as to achieve a height adapted to the aerial work device 100.

[0080] In one embodiment, the support member 3 is a gas spring. In other embodiments, the support member 3 can be other telescopic devices, such as cylinders, oil cylinders or other telescopic hydraulic devices.

[0081] The above is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules and units can refer to the corresponding processes in the foregoing method embodiments and will not be repeated herein. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present application, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. An aerial work device (100), characterized in that, Comprising: A fixed frame (11), the fixed frame (11) extending along the height direction of the aerial work device (100); A workbench support frame (12), movably connected to the fixed frame (11) along the height direction and provided with a workbench (2); A threaded connection transmission mechanism (4), the threaded connection transmission mechanism (4) including a first threaded portion extending along the workbench support frame (12) in the height direction of the aerial work device (100) and connected to the workbench support frame (12), and a second threaded portion connected to the fixed frame (11), the first threaded portion and the second threaded portion being connected by threaded cooperation; and A manual reversing drive mechanism (5) rotatably supported on the workbench support frame (12), the manual reversing drive mechanism (5) being used for manually inputting a driving torque to drive the first threaded portion of the threaded connection transmission mechanism (4) to rotate up or down relative to the second threaded portion and drive the workbench support frame (12) to move up and down relative to the fixed frame (11) along the height direction of the aerial work device (100).

2. The aerial work device according to claim 1, wherein, The first threaded portion includes: A lead screw seat (41), provided on the workbench support frame (12); and A lead screw (42), both ends of the lead screw (42) being rotatably provided on the lead screw seat (41) and connected to the manual reversing drive mechanism (5); The second threaded portion includes a fixed seat (43) threadedly connected to the lead screw (42), the fixed seat (43) being provided on the fixed frame (11).

3. The aerial work device according to claim 2, characterized in that, The manual reversing drive mechanism (5) includes: A first bevel gear (51), provided at one end of the lead screw (42) and coaxially provided with the lead screw (42); A second bevel gear (52), rotatably provided on the workbench support frame (12) and meshing with the first bevel gear (51); and A crank (53), the crank (53) being configured to manually input a driving torque to drive the second bevel gear (52) to rotate.

4. The aerial work device according to claim 3, characterized in that, The manual reversing drive mechanism (5) further includes: A disc (56), fixed to the workbench support frame (12) and having an installation space between the disc (56) and the workbench support frame (12), the second bevel gear (52) being provided on a side of the disc (56) close to the workbench support frame (12) and located in the installation space; A first rotating shaft, a first end of the first rotating shaft being rotatably provided on the workbench support frame (12), and a second end of the rotating shaft passing through the disc (56); A first gear (54), the first gear (54) being located on a side of the disc (56) away from the workbench support frame (12) and provided at the second end of the first rotating shaft, the first gear (54) being fixedly connected to the crank (53); A second rotating shaft, the second rotating shaft being rotatably provided on the disc (56), and the second bevel gear (52) being provided at a first end of the second rotating shaft; A second gear (55) meshing with the first gear (54), the second gear (55) being located on a side of the disc (56) away from the workbench support frame (12) and being provided at a second end of the second rotating shaft.

5. The aerial work device according to any one of claims 1-4, characterized in that, One end of the fixed frame body (11) is provided with a first roller (111), and one end of the workbench support frame (12) is provided with a second roller (121). The first roller (111) is provided on a side of the fixed frame body (11) facing the workbench support frame (12) and can roll along the workbench support frame (12), and the second roller (121) is provided on a side of the workbench support frame (12) facing the fixed frame body (11) and can roll along the fixed frame body (11).

6. The aerial work device according to claim 5, characterized in that, Sliders (6) are provided on two sides of one of the fixed frame body (11) and the workbench support frame (12), and the sliders (6) can slide along the height direction on the other of the fixed frame body (11) and the workbench support frame (12).

7. The aerial work device according to claim 1, characterized in that, It further includes a chassis (8), wheels (9) and a braking assembly. The fixed frame body (11) is fixedly connected to the chassis (8), the wheels (9) are provided on the chassis (8), and the braking assembly is configured to automatically extend and lock the wheels (9) when the workbench support frame (12) starts to rise, and to contract and unlock the wheels (9) under the pressure of the workbench support frame (12) when the workbench support frame (12) falls and contacts the braking assembly.

8. The aerial work device according to claim 7, characterized in that, The braking assembly includes: A connecting rod (10), a first end of the connecting rod (10) being slidably connected to a side wall of the chassis (8) and being located below an end of the workbench support frame (12) close to the chassis (8); A rocker (20), a first end of the rocker (20) being rotatably connected to a second end of the connecting rod (10); A limit pin (30), a first end of the limit pin (30) being fixedly connected to a second end of the rocker (20), and a second end of the limit pin (30) being configured to be engaged with the wheel (9); and A spring (40), a first end of the spring (40) being connected to the chassis (8), and a second end of the spring (40) being connected to the rocker (20).

9. The aerial work device according to claim 8, characterized in that, A locking chute (81) is provided on a side wall of the chassis (8), the wheel (9) is provided with a clamping plate (91), a plurality of clamping openings (911) are circumferentially formed in the clamping plate (91), a first end of the connecting rod (10) can slide in the locking chute (81), and the limit pin (30) can be engaged in the clamping openings (911).

10. The aerial work device according to claim 7, characterized in that, It further includes a telescopic support member (3), a first end of the support member (3) being fixedly connected to the chassis (8), and a second end of the support member (3) being connected to the workbench support frame (12).

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