Adjustable lifting working platform

Abstract

The utility model relates to the technical field of working platforms, in particular to an adjustable lifting working platform which is a plane mechanism and comprises a working platform body. The output end of the first driving device linearly reciprocates up and down and is rotationally connected with the working platform; at least one first driving device is arranged; when a plurality of first driving devices are arranged, the output ends of all the first driving devices are collinear with the hinge axis of the working platform; the lifting assembly comprises a connecting rod capable of rotating around an axis; two ends of the rocker are rotationally connected with the working platform and the connecting rod respectively; the second driving device drives the connecting rod to rotate. The working platform is hinged to the first driving device and the rocker structure composed of the rocker, the connecting rod and the second driving device, height adjustment and inclination angle adjustment of the working platform are achieved, the rocker structure and the first driving device can evenly share the weight of the working platform, and the service life of the adjustable lifting working platform is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of work platform technology, and in particular relates to an adjustable lifting work platform. Background Technology

[0002] A work platform is a device that can be used to assist in the assembly and maintenance of equipment. Its main function is to provide assemblers and maintenance workers with a work surface for placing parts and tools. Based on different work requirements, the height and angle of the work surface should be adjusted accordingly to improve the work efficiency of assemblers and maintenance workers.

[0003] Chinese patent CN217513830U provides a height-adjustable tilting worktable, including a base frame with a square frame structure and a platform located directly above the base frame. The base frame includes a front crossbeam, a left crossbeam, a rear crossbeam, and a right crossbeam fixedly connected end-to-end in a clockwise direction. A vertically arranged first electric push rod is fixed to the top left side of both the front and rear crossbeams. The upper end of the first electric push rod is hinged to the bottom left side of the platform, allowing the platform to swing left and right around the hinge point with the first electric push rod. Both the front and rear crossbeams are equipped with sliding components capable of left and right translation, located to the right of the first electric push rods. A vertically positioned second electric push rod is fixed to the top of the assembly. A ball assembly, comprising a ball that can rotate freely within a vertical interface, is fixed to the upper end of the second electric push rod, with the top of the ball resting against the bottom of the tabletop. When the sliding assembly moves to the right to its furthest distance from the first electric push rod, a gap exists between the top of the ball and the right end of the tabletop. A third electric push rod extending to the right is fixed to the right side of the left crossbeam. The right end of the third electric push rod is fixedly connected to the middle of a moving rod extending in the front-back direction. The front and rear ends of the moving rod are respectively fixedly connected to the bottoms of the two second electric push rods. The above device achieves horizontal lifting and lowering of the tabletop by adjusting the first and second electric push rods. By pulling the second electric push rod left and right with the third electric push rod, the position of the ball and the support point at the bottom of the tabletop can be adjusted, thereby allowing for adjustment of the tabletop's tilt angle.

[0004] In the above structure, the second electric push rod is slidably connected to the table. When the tilt angle of the table is too large, the table will tend to slide downward relative to the second electric push rod, which will cause the first electric push rod to bear more of the table weight. Over time, this will shorten the service life of the first electric push rod. Utility Model Content

[0005] In existing technologies, when the platform tilts at an excessive angle, it tends to slide downwards relative to the second electric push rod, causing the first electric push rod to bear a significant portion of the platform's weight and thus shortening its lifespan. This invention provides an adjustable lifting work platform. The work platform is hinged to a linearly driven first drive device and a rocker structure composed of a rocker arm, connecting rod, and second drive device. This allows for height and tilt angle adjustments of the work platform. In this invention, most components are hinged, enabling the rocker structure and first drive device to distribute the platform's weight more evenly during large tilt angle adjustments, thereby extending the lifespan of both the rocker structure and the first drive device.

[0006] This utility model provides an adjustable lifting work platform, which is a planar mechanism, comprising:

[0007] Work platform.

[0008] The first drive device has an output end that performs a linear up-and-down reciprocating motion in an inclined or vertical direction, and the output end is rotatably connected to the work platform. At least one first drive device is provided. When there are multiple first drive devices, the output ends of all the first drive devices are collinear with the hinge axis of the work platform.

[0009] The lifting assembly includes a connecting rod that can rotate about an axis.

[0010] The joystick is rotatably connected at both ends to the work platform and the connecting rod, respectively. The hinge axis between the joystick and the work platform and the hinge axis between the first drive device and the work platform are not collinear.

[0011] The second drive unit is used to drive the connecting rod to rotate.

[0012] In some embodiments, the second drive device can rotate about an axis, the connecting rod is not collinear with the rotation axis of the second drive device, the output end of the second drive device reciprocates linearly, and the output end of the second drive device is rotatably connected to the connecting rod.

[0013] In some embodiments, the output end of the second drive device and the connection position of the rocker on the connecting rod are located on both sides of the connecting rod rotation axis.

[0014] In some embodiments, the adjustable lifting work platform further includes a frame, on which a connecting rod, a first drive device, and a second drive device are mounted; the frame, the first drive device, and the lifting assembly are all located below the work platform. When the work platform is in its lowest position, it is supported by the top of the frame.

[0015] In some embodiments, an arc-shaped structure is provided at the top of the frame. When the tilt angle of the work platform changes, the bottom of the work platform rotates along the arc-shaped edge of the arc-shaped structure.

[0016] In some embodiments, the adjustable lifting work platform further includes a rotating shaft that passes through and is rotatably connected to a connecting rod, with both ends of the rotating shaft connected to the frame.

[0017] In some embodiments, the rotation axis of the second drive unit is located below the connecting rod.

[0018] In some embodiments, the connecting rod is V-shaped, the inner angle of the connecting rod is obtuse, the inner angle of the connecting rod is located on the side of the connecting rod away from the first drive device, and the rotation axis of the connecting rod and the frame is located in the middle part of the connecting rod.

[0019] In some embodiments, the first driving device is any one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator. The second driving device is any one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator.

[0020] In some embodiments, multiple first driving devices are provided, and the driving directions of all first driving devices are parallel.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. In this utility model, the working platform is hinged to the first driving device and the rocker structure composed of a rocker arm, a connecting rod and a second driving device, so as to realize the height adjustment and tilt angle adjustment of the working platform. The rocker structure and the first driving device can distribute the weight of the working platform more evenly and improve the service life of the adjustable lifting working platform.

[0023] 2. In this utility model, the connecting rod and rocker arm can form a large lever arm during the movement, distributing part of the weight of the working platform to the axis of rotation of the connecting rod, which helps to reduce the output force requirements of the second drive device and protect the second drive device. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a front view of the first drive device of this utility model when its output end is in the lowest position;

[0026] Figure 2 This is a schematic diagram of the structure of the first driving device of this utility model when the output end is in the lowest position;

[0027] Figure 3 This is a schematic diagram of the structure of the work platform of this utility model when it is detached from the frame and in a horizontal state.

[0028] In the figure: 1. Working platform; 2. First drive device; 3. Lifting assembly; 31. Connecting rod; 32. Rocker arm; 33. Second drive device; 41. Frame; 42. Arc structure; 43. Rotating shaft; 44. Mounting seat; 45. Assembly seat; 46. First hinge seat; 47. Second hinge seat; 48. Third hinge seat. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] It should be noted that the "planar mechanism" referred to in this utility model is common knowledge in the field of mechanics. When all the components of a mechanism move in the same plane or in mutually parallel planes, the mechanism is a planar mechanism. In a planar mechanism, the rotation axes of all rotational connections are parallel or collinear.

[0034] like Figure 1-3The image shows an embodiment of an adjustable lifting work platform provided by this utility model. This adjustable lifting work platform is a planar mechanism and has at least the following features:

[0035] Work Platform 1.

[0036] The first drive device 2 is fixed in position. The output end of the first drive device 2 performs a linear up-and-down reciprocating motion in an inclined or vertical direction, and the output end is rotatably connected to the work platform 1. At least one first drive device 2 is provided. When there are multiple first drive devices 2, the output ends of all first drive devices 2 are collinear with the hinge axis of the work platform 1, and all first drive devices 2 are arranged linearly along their own hinge axis with the work platform 1.

[0037] The lifting assembly 3 includes a connecting rod 31, which can rotate about an axis.

[0038] The rocker arm 32 is rotatably connected at both ends to the working platform 1 and the connecting rod 31, respectively. The hinge axis of the rocker arm 32 and the working platform 1 is not collinear with the hinge axis of the first drive device 2 and the working platform 1.

[0039] The second drive device 33 is used to drive the connecting rod 31 to rotate.

[0040] There are two ways to adjust the tabletop angle of work platform 1:

[0041] In the first method, the output end of the first drive device 2 is at a fixed height. The second drive device 33 drives the connecting rod 31 to rotate. The connecting rod 31 drives the working platform 1 to rotate around the hinge axis between the working platform 1 and the output end of the first drive device 2 through the rocker arm 32, thereby adjusting the tilt angle of the working platform 1.

[0042] The second method involves fixing the position of the connecting rod 31, changing the height of the output end of the first drive device 2, and driving the work platform 1 to rotate around the hinge axis between the rocker arm 32 and the work platform 1 to adjust the tilt angle of the work platform 1.

[0043] The work platform 1 is adjusted in height by activating at least one of the first drive device 2 and the second drive device 33 to make the work platform 1 level. The first drive device 2 can change the height of its output end; the second drive device 33 can drive the connecting rod 31 to rotate, and the connecting rod 31 drives the rocker arm 32 to change the height of the rocker arm 32 at the hinge point with the work platform 1.

[0044] In this embodiment, most of the components are hinged, which allows the rocker arm 32 structure and the first drive device 2 to distribute the weight of the work platform 1 more evenly when adjusting the work platform 1 at a large tilt angle, thereby improving the service life of the rocker arm 32 structure and the first drive device 2. This embodiment has a simple structure and is easy to assemble.

[0045] In some embodiments, the second drive device 33 can rotate about an axis, the axis of rotation of the connecting rod 31 is not collinear with that of the second drive device 33, the output end of the second drive device 33 reciprocates linearly, and the output end of the second drive device 33 is rotatably connected to the connecting rod 31. Both the first drive device 2 and the second drive device 33 are linear output devices and can be interchanged.

[0046] Specifically, the first drive device 2 and the second drive device 33 may have the same or different structures. The driving principles of the first drive device 2 and the second drive device 33 include, but are not limited to, hydraulic cylinders, pneumatic cylinders, electric actuators, gear and rack meshing, and worm gear meshing. Preferably, the first drive device 2 is any one of a hydraulic cylinder, pneumatic cylinder, or electric actuator. Preferably, the second drive device 33 is any one of a hydraulic cylinder, pneumatic cylinder, or electric actuator.

[0047] Specifically, two connecting rods 31 are provided, and the two connecting rods 31 are symmetrically hinged on both sides of the output end of the second drive device 33. Two rocker arms 32 are provided, and the two rocker arms 32 are respectively hinged to the two connecting rods 31, and both rocker arms 32 are hinged to the working platform 1.

[0048] Specifically, the two rocker arms 32 are hinged to the work platform 1 via the second hinge seat 47. The two rocker arms 32 are symmetrically hinged on both sides of the second hinge seat 47, which is mounted on the work platform 1.

[0049] In some embodiments, the opening and closing of the first drive device 2 and the second drive device 33 are preferably controlled by wired or wireless electrical signals, which facilitates remote operation by workers and protects their safety.

[0050] In some embodiments, the output end of the second drive device 33 and the connection position of the rocker arm 32 on the connecting rod 31 are located on both sides of the rotation axis of the connecting rod 31. During the movement, the connecting rod 31 and the rocker arm 32 can form a large lever arm, distributing part of the weight of the work platform 1 to the rotation axis of the connecting rod 31, which helps to reduce the output force requirement of the second drive device 33 and protect the second drive device 33.

[0051] In some embodiments, the connecting rod 31 is detachably connected to the second drive device 33, and the rocker arm 32 is detachably connected to the connecting rod 31 and the working platform 1, so as to facilitate the replacement of the connecting rod 31 and the rocker arm 32. By changing the size of the connecting rod 31 and the rocker arm 32, the lever arm of the rocker arm 32 structure can be changed to meet the different tilt angle range and different load-bearing weight requirements of the working platform 1.

[0052] In some embodiments, the adjustable lifting work platform 1 further includes a frame 41, on which a connecting rod 31, a first drive device 2, and a second drive device 33 are mounted. The entire adjustable lifting work platform 1 is connected as a whole by the frame 41, facilitating transportation.

[0053] In some embodiments, the frame 41 is welded from profiles, resulting in a simple structure that is easy to process; it is also lightweight and easy to transport. The profiles referred to in these embodiments are strip-shaped metal structures with specific cross-sectional shapes and dimensions, which are common structures in the art and will not be described in detail here.

[0054] In some embodiments, casters may be provided at the bottom of the frame 41 to further improve the mobility of the adjustable lifting work platform 1. The casters are not shown in the figure.

[0055] In some embodiments, the frame 41, the first drive unit 2, and the lifting assembly 3 are all located below the work platform 1. When the work platform 1 is in its lowest position, it is supported by the top of the frame 41 to protect the first drive unit 2 and the second drive unit 33.

[0056] In some embodiments, the rotation axis of the second drive device 33 is located below the connecting rod 31.

[0057] In some of these examples, the connecting rod 31 is V-shaped, the inner angle of the connecting rod 31 is obtuse, the inner angle of the connecting rod 31 is located on the side of the connecting rod 31 away from the first drive device 2, and the axis of rotation of the connecting rod 31 and the frame 41 is located in the middle part of the connecting rod 31.

[0058] In some embodiments, an arc-shaped structure 42 is provided on the top of the frame 41. When the tilt angle of the work platform 1 changes, the bottom of the work platform 1 rotates along the arc edge of the arc-shaped structure 42 to prevent the frame 41 from interfering with the tilt angle adjustment of the work platform 1 and to prevent the frame 41 from scraping and damaging the bottom of the work platform 1.

[0059] In some embodiments, the arc-shaped structure 42 is detachably connected to the frame 41. The frame 41 and the arc-shaped structure 42 are processed separately and then assembled into one unit, which helps to reduce the manufacturing difficulty of the adjustable lifting work platform 1. At the same time, it is easy to replace the arc-shaped structure 42, avoiding wear and failure of the arc-shaped structure 42.

[0060] For example Figure 1-3 In the middle, the arc-shaped structure 42 is a sheet body, and two arc-shaped structures 42 are symmetrically installed on both sides of the frame 41.

[0061] In some embodiments, the adjustable lifting work platform further includes a rotating shaft 43, which passes through and is rotatably connected to the connecting rod 31, and the two ends of the rotating shaft 43 are connected to the frame 41.

[0062] In some embodiments, the rotating shaft 43, the connecting rod 31, and the frame 41 are detachably connected to facilitate assembly and maintenance.

[0063] Specifically, a mounting base 44 is connected to each end of the rotating shaft 43, and the two mounting bases 44 are mounted on the frame 41.

[0064] In some embodiments, multiple first drive devices 2 are provided, and the drive directions of all first drive devices 2 are parallel, so as to keep the output height of all first drive devices 2 consistent.

[0065] Specifically, the output direction of all first drive devices 2 is vertical, so that the output force of the first drive devices 2 is used to support the working platform 1, so as to prevent the output force of the first drive devices 2 from generating a horizontal component force, causing additional load on the first drive devices 2.

[0066] In some embodiments, each first drive unit 2 is detachably connected to the frame 41 via a mounting base 45.

[0067] In some embodiments, the output end of each first drive device 2 is hinged to the work platform 1 via a first hinge seat 46. The first hinge seat 46 includes a fixed seat and two hinge plates, which are symmetrically hinged to both sides of the output end of the first drive device 2, and the two hinge plates are fixedly connected to the fixed seat.

[0068] In some embodiments, the adjustable lifting work platform further includes a third hinge seat 48, which is mounted on the frame 41, and the second drive device 33 is hinged to the third hinge seat 48.

[0069] In some embodiments, the second drive device 33 may be replaced by a motor instead of a linear drive device. The output shaft axis of the motor is collinear with the rotation axis of the connecting rod 31 to drive the connecting rod 31 to rotate. This motor is not shown in the figure and is only described in words here.

[0070] In some embodiments, the frame 41, the second drive device 33, the rocker arm 32, the connecting rod 31, the work platform 1, and the first drive device 2 are all detachably connected to facilitate maintenance.

[0071] like Figure 1-3 The diagram illustrates one combination of the aforementioned embodiments, wherein the output end of the second drive device 33 reciprocates linearly, the connecting rod 31 rotates, and the rocker arm 32 swings. The second drive device 33 is a hydraulic cylinder, and the first drive device 2 is an electric push rod. Two first drive devices 2 are provided, both vertically arranged. When the piston rod of the second drive device 33 is extended and the output end of the first drive device 2 is at its lowest position, the work platform 1 can be placed flat on top of the frame 41.

[0072] Figure 1-3 The adjustable lifting work platform shown has the following two ways to adjust the platform angle:

[0073] In the first method, the output end of the first drive device 2 is at a fixed height. The second drive device 33 drives the connecting rod 31 to rotate. The connecting rod 31 drives the working platform 1 to rotate around the hinge axis between the working platform 1 and the output end of the first drive device 2 through the rocker arm 32, thereby adjusting the tilt angle of the working platform 1.

[0074] The second method involves fixing the position of the connecting rod 31, changing the height of the output end of the first drive device 2, and driving the work platform 1 to rotate around the hinge axis between the rocker arm 32 and the work platform 1 to adjust the tilt angle of the work platform 1.

[0075] Figure 1-3 The adjustable lifting work platform shown can be adjusted in the following way: activating at least one of the first drive device 2 and the second drive device 33 to make the work platform 1 level. The first drive device 2 can change the height of its output end; the second drive device 33 can drive the connecting rod 31 to rotate, and the connecting rod 31 drives the rocker arm 32 to change the height of the rocker arm 32 at the hinge point with the work platform 1.

[0076] Figure 1-3 This should not be regarded as a limitation on the combination of the above multiple embodiments. Any combination of the above multiple embodiments, including the first embodiment, should be covered within the scope of the technical solution claimed in this utility model.

[0077] Through the description of several embodiments of the adjustable lifting work platform provided by this utility model, it can be seen that the embodiments of the adjustable lifting work platform provided by this utility model have at least one or more of the following advantages:

[0078] In this utility model, the working platform 1 is hinged to the first driving device 2 and the rocker 32 structure, which consists of a rocker 32, a connecting rod 31, and a second driving device 33, so as to realize the height adjustment and tilt angle adjustment of the working platform 1. The rocker 32 structure and the first driving device 2 can distribute the weight of the working platform 1 more evenly and improve the service life of the adjustable lifting working platform.

[0079] In this invention, the connecting rod 31 and the rocker arm 32 can form a large lever arm during the movement, distributing part of the weight of the working platform 1 to the axis of rotation of the connecting rod, which helps to reduce the output force requirements of the second drive device 33 and protect the second drive device 33.

[0080] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0081] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An adjustable elevated work platform, characterised in that, The utility model relates to a work platform, comprising: a work platform; a first driving device, the output end of which moves linearly up and down in an inclined or vertical direction, and the output end is rotationally connected to the work platform; the first driving device is provided with at least one; when the first driving device is provided with multiple, the output ends of all the first driving devices are collinear with the hinging axis of the work platform; a lifting assembly, which comprises a connecting rod that can rotate about an axis; a rocker, the two ends of which are rotationally connected to the work platform and the connecting rod respectively; the hinging axis of the rocker and the hinging axis of the first driving device and the work platform are not collinear; a second driving device for driving the connecting rod to rotate.

2. An adjustable elevating work platform as claimed in claim 1 wherein, The second driving device can rotate about an axis, the connecting rod and the rotation axis of the second driving device are not collinear, the output end of the second driving device moves linearly reciprocatingly, and the output end of the second driving device is rotationally connected to the connecting rod.

3. An adjustable elevating work platform as claimed in claim 2 wherein, The connecting positions of the output end of the second driving device and the rocker on the connecting rod are located on the two sides of the rotation axis of the connecting rod respectively.

4. An adjustable elevating work platform as claimed in claim 3 wherein, The utility model relates to a work platform, comprising: a frame, the frame being provided with a connecting rod, a first driving device and a second driving device; the frame, the first driving device and the lifting assembly are all located below the work platform; when the work platform is in the lowest position, the work platform is supported by the top of the frame.

5. An adjustable elevating work platform as claimed in claim 4 wherein, The top of the frame is provided with an arc structure; when the inclination angle of the work platform changes, the bottom of the work platform rotates along the arc edge of the arc structure.

6. An adjustable elevating work platform as claimed in claim 4 wherein, The utility model further comprises a rotation shaft, the rotation shaft penetrating through the connecting rod and being rotationally connected to the connecting rod, the two ends of the rotation shaft being connected to the frame.

7. An adjustable elevating work platform as claimed in claim 4 wherein, The rotation axis of the second driving device is located below the connecting rod.

8. An adjustable elevating work platform as claimed in claim 4 wherein, The connecting rod is V-shaped, the internal angle of the connecting rod is obtuse, the internal angle of the connecting rod is located on the side of the connecting rod away from the first driving device, and the rotation axis of the connecting rod and the frame is located in the middle part of the connecting rod.

9. An adjustable elevating work platform as claimed in claim 2 wherein, The first driving device is any one of a hydraulic cylinder, an air cylinder and an electric push rod; the second driving device is any one of a hydraulic cylinder, an air cylinder and an electric push rod.

10. An adjustable elevating work platform as claimed in claim 1 wherein, When the first driving device is provided with multiple, the driving directions of all the first driving devices are parallel.

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