A swing mechanism for aerial work platform

Abstract

The present invention discloses a swing mechanism for an aerial work platform, comprising: a frame, on which a work platform is installed; the work platform, at the center of which a rotating arm is provided, one end of the rotating arm is rotatably connected to the frame, and the other end is hinged with a movable connecting rod, and the other end of the movable connecting rod is hinged with a driving connecting rod; the end of the driving connecting rod away from the movable connecting rod is hinged with the frame; an electric push rod is installed on the frame and hinged with the middle part of the driving connecting rod, and is used to drive the driving connecting rod to move, and finally drive the work platform to rotate relative to the frame. The swing mechanism for the aerial work platform according to the embodiment of the present invention has a simple structure and a light overall mass, which can improve the stability of the whole vehicle, and at the same time will not affect the load capacity of the work platform; it is driven by an electric push rod, and is not a precision component, which can reduce costs.

Description

Technical Field

[0001] The invention relates to the technical field of aerial work, in particular to a swing mechanism of an aerial work platform. Background Art

[0002] For aerial work equipment, there are swing motors or slewing devices on the side or bottom of the work platform to increase the range and flexibility of the work swing. The existing swing angle range is mostly around 160°. The platform load capacity of aerial work vehicles is an extremely important parameter performance indicator of the product. Currently, hydraulic swing motors are commonly used, which are installed on the side of the work platform and driven by the power provided by the hydraulic pressure to swing left and right; however, the existing hydraulic motors are heavy and outside the overturning line, which will produce a large overturning moment, which has a large side effect on the stability of the vehicle and the platform load capacity parameters. In addition, hydraulic swing motors are precision components with high costs. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a swing mechanism for an aerial work platform, which has a simple structure, a lower cost than a hydraulic component and can achieve a larger range of swing.

[0004] According to the first aspect of the present invention, the swing mechanism of the aerial work platform includes: a frame, on which a working platform is installed; the working platform, at the center of which a rotating arm is provided, one end of the rotating arm is rotatably connected to the frame, and the other end is hinged with a movable link, and the other end of the movable link is hinged with a driving link; the end of the driving link away from the movable link is hinged with the frame; an electric push rod is installed on the frame and hinged with the middle part of the driving link, for driving the driving link to move, and finally driving the working platform to rotate relative to the frame.

[0005] The swing mechanism of the aerial work platform according to the embodiment of the present invention has at least the following beneficial effects: the swing mechanism has a simple structure, a light overall mass, and is arranged at the lower part of the work platform, which can improve the stability of the entire vehicle without affecting the load capacity of the work platform; it is driven by an electric push rod and is not a precision component, so it is more economical and affordable than hydraulic drive, can reduce costs, and has lower maintenance costs.

[0006] According to some embodiments of the present invention, the rotating arm is provided with a mounting hole, and the mounting hole coincides with the center of the working platform; the frame is provided with a connecting shaft, and the connecting shaft is installed in the mounting hole to realize the connection between the frame and the working platform.

[0007] According to some embodiments of the present invention, the electric push rod includes a rod body and a telescopic rod, the rod body is hinged to the frame, one end of the telescopic rod is hinged to the driving connecting rod, and the other end is installed in the rod body.

[0008] According to some embodiments of the present invention, a radially protruding hinge hole is provided in the middle portion of the driving connecting rod, and the telescopic rod is hinged at the hinge hole.

[0009] According to some embodiments of the present invention, the hinge position between the driving link and the frame is located on a perpendicular midline passing through the center of the working platform.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of the structure of the present invention in a static state;

[0013] Figure 2 It is a schematic diagram of the structure of the present invention rotated 90 degrees to the left;

[0014] Figure 3 It is a schematic diagram of the structure of the present invention rotated 90 degrees to the right;

[0015] Figure 4 It is a schematic diagram of the hinge point of the present invention

[0016] Figure 5 is a side exploded view of the present invention;

[0017] Figure 6 It is a structural schematic diagram of the balancing roller of the present invention.

[0018] Reference numerals:

[0019] Frame 100, connecting shaft 110;

[0020] Working platform 200, rotating arm 210, mounting hole 211, movable connecting rod 220, driving connecting rod 230, hinge hole 231;

[0021] Electric push rod 300, rod body 310, telescopic rod 320;

[0022] Balancing roller 400 , housing 410 , roller 420 . DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" 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 a limitation on the present invention. In addition, features defined as "first" and "second" 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.

[0025] 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 according to specific circumstances.

[0026] Reference Figures 1 to 6 A swing mechanism for an aerial work platform according to an embodiment of the present invention includes a frame 100, on which a work platform 200 is installed; the work platform 200 is provided with a rotating arm 210 at the center, one end of the rotating arm 210 is rotatably connected to the frame 100, and the other end is hinged with a movable link 220, and the other end of the movable link 220 is hinged with a driving link 230; the end of the driving link 230 away from the movable link 220 is hinged with the frame 100; an electric push rod 300 is installed on the frame 100 and hinged with the middle part of the driving link 230, and is used to drive the driving link 230 to move, and finally drive the work platform 200 to rotate relative to the frame 100. Specifically, as Figure 4As shown, the rotating arm 210 is rotatably connected to the frame 100 through point O, one end of the movable link 220 is hinged to the rotating arm 210 at point C, and the other end is hinged to the driving link 230, and the other end of the driving link 230 is hinged to the frame 100 at point B; one end of the electric push rod 300 is hinged to the driving link 230, and the other end is hinged to the frame 100 at point A. The electric push rod 300 drives the driving link 230 to move, and the driving link 230 further drives the movable link 220 to move, and the movable link 220 thereby drives the rotating arm 210 to rotate around the connection between it and the frame 100, and drives the work platform 200 to rotate around its center relative to the frame 100. The swing mechanism of the aerial work platform 200 of the present invention has a simple structure. Compared with the commonly used hydraulic swing motor, the overall mass of the present invention is lighter, and it is arranged at the lower part of the work platform 200, so it will not generate overturning moment on the work platform 200, which can improve the stability of the whole vehicle without affecting the load capacity of the work platform 200; and the swing mechanism of the present invention does not use precision components, which is more economical than hydraulic propulsion, and can effectively reduce the use cost and maintenance cost.

[0027] It is understandable that the rotating arm 210 can be fixedly disposed on the working platform 200 or detachably connected and installed on the working platform 200 .

[0028] In some embodiments of the present invention, the rotating arm 210 is provided with a mounting hole 211, and the mounting hole 211 coincides with the center of the working platform 200; the frame 100 is provided with a connecting shaft 110, and the connecting shaft 110 is installed in the mounting hole 211 to achieve the connection between the frame 100 and the working platform 200. Specifically, since the working platform 200 is arranged on the upper part of the frame 100, and a gap is left between the frame 100 and the working platform 200 for the movement of the movable connecting rod 220 and the driving connecting rod 230, the connecting shaft 110 matched with the mounting hole 211 should be longer than the diameter depth of the mounting hole 211, so that a gap is left between the frame 100 and the working platform 200.

[0029] In some embodiments of the present invention, the electric push rod 300 includes a rod body 310 and a telescopic rod 320, the rod body 310 is hinged to the frame 100, one end of the telescopic rod 320 is hinged to the driving connecting rod 230, and the other end is installed in the rod body 310. Specifically, one end of the rod body 310 away from the telescopic rod 320 is connected to, or an electric driving device is provided in the rod body 310, and the telescopic rod 320 is extended and retracted by electric driving.

[0030] In some embodiments of the present invention, a radially protruding hinge hole 231 is provided in the middle of the driving connecting rod 230, and the telescopic rod 320 is hinged at the hinge hole 231. The hinge hole 231 is provided at one end of the driving connecting rod 230 close to the frame 100, and the driving connecting rod 230 close to the frame 100 has a smaller range of motion, so the telescopic rod 320 of the electric push rod 300 does not need to be set too long, and the telescopic rod 320 is not easy to deform, and can transmit a larger torque.

[0031] In some embodiments of the present invention, the working platform 200 can rotate left and right around its center by not less than 90 degrees. Specifically, the swing angle range of the existing working platform 200 is mostly around 160 degrees. The larger the swing angle range of the working platform 200, the larger the working range without moving the frame 100, and the more flexible the adjustment can be for different environments, which is suitable for more complex situations.

[0032] In a further embodiment of the present invention, Figure 5 , Figure 6 As shown, the frame 100 is provided with a balancing roller 400, and the balancing roller 400 includes a housing 410 and a roller 420, the housing 410 is mounted on the frame 100, and the roller 420 is arranged in the housing 410, and the roller 420 is against the working platform 200; the balancing roller 400 is used to support the working platform 200 so that the working platform 200 is subjected to a balanced force. It should be understood that the balancing roller 400 should not be arranged on the movement path of the driving connecting rod 230 and the movable connecting rod 220.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" 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 invention. In this specification, the schematic representation of the above terms does 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.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A swing mechanism for an aerial work platform, characterized in that: include: A frame (100) is provided with a working platform (200) mounted on the upper portion, wherein the working platform (200) is capable of rotating about its center at an angle of more than 180 degrees; A working platform (200) is provided with a rotating arm (210) at the center thereof, one end of the rotating arm (210) being rotatably connected to the frame (100), and the other end being hingedly connected to a movable connecting rod (220), and the other end of the movable connecting rod (220) being hingedly connected to a driving connecting rod (230); one end of the driving connecting rod (230) away from the movable connecting rod (220) is hingedly connected to the frame (100); the rotating arm (210) is provided with a mounting hole (211), and the mounting hole (211) coincides with the center of the working platform (200); the frame (100) is provided with a connecting shaft (110), and the connecting shaft (110) is installed in the mounting hole (211) to realize the connection between the frame (100) and the working platform (200); An electric push rod (300) is mounted on the frame (100) and is hinged to the middle of the driving connecting rod (230) for driving the driving connecting rod (230) to move, and finally drives the working platform (200) to rotate relative to the frame (100); the electric push rod (300) comprises a rod body (310) and a telescopic rod (320); the rod body (310) is hinged to the frame (100); one end of the telescopic rod (320) is hinged to the driving connecting rod (230), and the other end is mounted in the rod body (310); a radially protruding hinge hole (231) is provided in the middle of the driving connecting rod (230); the telescopic rod (320) is hinged to the hinge hole (231), and the hinge hole (231) is provided at one end of the driving connecting rod (230) close to the frame (100).

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