Lifting platform

Abstract

The present invention provides a lifting platform, which relates to the field of aerial work platforms. The lifting platform includes a platform body, an arm, a driving device and a work platform, wherein one end of the arm is connected to the platform body; the driving device is connected to the other end of the arm; the work platform is connected to the driving device, and the driving device is used to use electricity as power to drive the work platform to move, thereby changing the position of the work platform. Since the driving device uses electricity as power to drive the work platform to move, the electrically driven driving device is not affected by the height of the work platform, avoiding the pressure loss caused by the power unit on the traditional chassis or turntable using pipelines to transmit hydraulic power over long distances, thereby greatly improving energy utilization and extending the use time of the vehicle.

Description

Technical Field

[0001] The invention relates to the field of aerial work platforms, and in particular to a lifting platform. Background Art

[0002] In the field of aerial work, aerial work platforms are widely used in many places as a kind of equipment for manned work at high altitude. The existing technology and design of boom amplitude change, platform leveling and platform rotation are mostly driven by electric cylinders, and the hydraulic oil is led from the chassis or turntable to the arm head through the hydraulic oil pipe along the boom. For telescopic arm or folding arm aerial work platform equipment, as the platform height increases, the pressure loss from the bottom of the vehicle to the platform position will increase, which will cause the energy conversion rate to decrease. Whether it is diesel, hybrid or electric, the vehicle usage time is reduced, resulting in energy waste. Summary of the invention

[0003] The present invention provides a lifting platform to solve the problem in the prior art that as the height of the platform increases, the pressure loss transmitted from the bottom of the vehicle to the platform position will increase, thereby causing a decrease in energy conversion rate, resulting in energy waste and shortening the use time of the vehicle.

[0004] The present invention provides a lifting platform, comprising: Platform entity; A boom, one end of which is connected to the platform body; A driving device connected to the other end of the arm; The working platform is connected to the driving device, and the driving device is used to use electricity as power to drive the working platform to move, thereby changing the position of the working platform.

[0005] According to a lifting platform provided by the present invention, the driving device comprises: A leveling electric cylinder, one end of which is hinged to the other end of the arm; A connecting piece, the connecting piece is hinged to the other end of the leveling electric cylinder and the other end of the arm; at least one flying arm, one end of which is hinged to the connecting member; At least one flying arm electric cylinder, one end of which is hinged to the connecting member, and the other end of which is hinged to the flying arm; At least one swing electric cylinder is connected to the other end of the flying arm and the working platform.

[0006] According to a lifting platform provided by the present invention, the lifting platform includes two working platforms, the driving device includes two flying arms, two flying arm electric cylinders and two swinging electric cylinders, one end of the two flying arms are hinged to the connecting piece, one end of the two flying arm electric cylinders are hinged to the connecting piece, the other end of the two flying arm electric cylinders are hinged to the two flying arms in a one-to-one correspondence, the other end of the two flying arms are connected to the two swinging electric cylinders in a one-to-one correspondence, and the two swinging electric cylinders are connected to the two working platforms in a one-to-one correspondence.

[0007] According to a lifting platform provided by the present invention, one end of the two flying arms and the hinge point of the connecting member are in the same straight line, and one end of the two flying arm electric cylinders and the hinge point of the connecting member are in the same straight line.

[0008] According to a lifting platform provided by the present invention, the driving device further includes: A distance sensor is arranged on the side where the two working platforms face each other. The distance sensor is electrically connected to the swing electric cylinder. The distance sensor is used to detect the distance between the two working platforms. When the distance between the two working platforms is less than a predetermined distance, the distance sensor controls the swing electric cylinder to stop working.

[0009] A lifting platform provided according to the present invention also includes: A power supply device, wherein the power supply device comprises a cable, wherein the cable is electrically connected to the driving device, and the cable is used to supply power to the driving device.

[0010] According to a lifting platform provided by the present invention, the power supply device further includes: A cable reel is rotatably connected to the arm, and part of the cable is wound around the cable reel.

[0011] According to a lifting platform provided by the present invention, the power supply device further includes: A driving assembly is arranged on the arm and connected to the cable reel; the driving assembly is used to drive the cable reel to rotate so that the cable is released or recovered according to the extension or folding of the arm.

[0012] A lifting platform provided according to the present invention also includes: An upper control box is arranged on the working platform, the upper control box is electrically connected to the driving device and the cable, the upper control box is used to control the driving device to perform corresponding actions according to instructions, and the cable is also used to supply power to the upper control box.

[0013] According to a lifting platform provided by the present invention, the platform body comprises: Chassis; A turntable, the turntable is rotatably arranged on the upper part of the chassis, a counterweight is arranged at the rear end of the turntable, and the other end of the arm is hinged to the turntable; A luffing electric cylinder, one end of which is hinged to the turntable, and the other end of which is hinged to the boom.

[0014] The lifting platform provided by the present invention uses electricity as power to drive the working platform to move. The electrically driven driving device is not affected by the height of the working platform, thus avoiding the pressure loss caused by the power unit on the traditional chassis or turntable using pipelines to transmit hydraulic power over long distances, thereby greatly improving energy utilization and extending the vehicle's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a lifting platform provided by the present invention with the boom in a retracted state.

[0017] Figure 2 It is a structural schematic diagram of a lifting platform provided by the present invention with the boom in a retracted state.

[0018] Reference numerals: 100. Platform body; 110. Chassis; 120. Turntable; 130. Luffing electric cylinder; 140. Counterweight; 200. Boom; 300. Drive device; 310. Leveling electric cylinder; 320. Connector; 330. Flying arm; 340. Flying arm electric cylinder; 350. Swinging electric cylinder; 400. Working platform; 600. Power supply device; 610. Cable; 620. Cable reel. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0022] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0024] Combine the following Figure 1-Figure 2 The specific structure and working principle of the lifting platform of the present invention are described.

[0025] Figure 1 The schematic diagram of the structure of the lifting platform provided by the present invention with the boom in a retracted state is illustrated. Figure 2 The structural schematic diagram of the lifting platform provided by the present invention with the boom in a retracted state is illustrated as follows: Figure 1 and Figure 2 As shown, the lifting platform includes a platform body 100, a boom 200, a driving device 300 and a working platform 400. One end of the boom 200 is connected to the platform body 100; the driving device 300 is connected to the other end of the boom 200; the working platform 400 is connected to the driving device 300, and the driving device 300 is used to use electricity as power to drive the working platform 400 to move, thereby changing the position of the working platform 400.

[0026] The lifting platform provided by the present invention has a driving device 300 that uses electricity as power to drive the working platform 400 to move. The electrically driven driving device 300 is not affected by the height of the working platform 400, thereby avoiding the pressure loss caused by the power unit on the traditional chassis 110 or turntable 120 using pipelines to transmit hydraulic power over long distances, thereby greatly improving energy utilization and extending the vehicle's service life.

[0027] In one embodiment of the present invention, the drive device 300 may be driven by electricity in a variety of specific ways. The drive device 300 may be a combination of multiple electric cylinders, a combination of multiple electric linear push rods, or a combination of other linear drive components.

[0028] In one embodiment of the present invention, the lifting platform also includes an upper control box (not shown), which is arranged on the working platform 400. The upper control box is electrically connected to the cable 610, and the upper control box is electrically connected to the drive device 300. The upper control box is used to control the drive device 300 to perform corresponding actions according to instructions. Specifically, the upper control box is used to control the leveling electric cylinder 310, the flying arm electric cylinder 340 and the swing electric cylinder 350 to extend and retract according to instructions. In this embodiment, the cable 610 is also used to power the upper control box.

[0029] In one embodiment of the present invention, Figure 1 and Figure 2As shown, the driving device 300 includes a leveling electric cylinder 310, a connecting piece 320, at least one flying arm 330, at least one flying arm electric cylinder 340 and at least one swinging electric cylinder 350. The leveling electric cylinder 310 is used to make the working platform 400 in a horizontal state. In equipment such as aerial work vehicles, the leveling electric cylinder 310 can automatically or manually adjust the horizontal state of the working platform 400 to provide a stable and safe working environment for the staff. Even in different terrains or working postures, the leveling electric cylinder 310 can ensure that the working platform always remains horizontal, avoiding dangerous situations such as personnel slipping and tools rolling due to tilting. In this embodiment, one end of the leveling electric cylinder 310 is hinged to the other end of the boom 200 through a pin shaft, and the leveling electric cylinder 310 is electrically connected to the upper control box through a wire.

[0030] The connecting piece 320 is used to connect the leveling electric cylinder 310, the other end of the boom 200, one end of the flying arm 330, and one end of the flying arm electric cylinder 340. The connecting piece 320 is welded with metal plates, and the connecting piece 320 needs to have sufficient strength and rigidity to ensure the stable operation of the electric cylinder. In this embodiment, the connecting piece 320 is hinged to the other end of the leveling electric cylinder 310 through a pin shaft, and the connecting piece 320 is also hinged to the other end of the boom 200 through a pin shaft.

[0031] The flying arm 330 is used to connect the swing electric cylinder 350 and the connecting piece 320. By cooperating with the flying arm electric cylinder 340, the working platform 400 is driven to move. The design of the flying arm 330 enables the construction machinery to operate in an environment with confined space, thereby improving the flexibility and efficiency of the operation. In this embodiment, one end of the flying arm 330 is hinged to the connecting piece 320 through a pin shaft.

[0032] The flying arm electric cylinder 340 is a key component for driving the flying arm 330 to perform actions, so that the flying arm 330 can perform actions such as extension or rotation. The action of the flying arm electric cylinder 340 directly affects the working range of the working platform 400. In this embodiment, one end of the flying arm electric cylinder 340 is hinged to the connecting member 320 through a pin shaft, and the other end of the flying arm electric cylinder 340 is hinged to the middle part of the flying arm 330 through a pin shaft.

[0033] The swing electric cylinder 350 drives the rotating shaft to swing back and forth in a certain direction through electricity, thereby adjusting the horizontal position of the working platform 400. In this embodiment, the swing electric cylinder 350 is connected to the other end of the flying arm 330 and the working platform 400 through a pin shaft.

[0034] In one embodiment of the present invention, Figure 2As shown, the lifting platform includes two working platforms 400, which are arranged side by side. The sizes of the two working platforms 400 can be the same or different, which is determined according to the working requirements. The two working platforms 400 can be set up to work at the same time, so that more work can be completed in the same time, which is particularly suitable for high-altitude work tasks that require multi-person collaboration, and the two working platforms 400 can respectively adapt to different working requirements, such as one platform for people to stand and work, and the other platform for placing tools and materials, which can more flexibly adapt to different working scenes.

[0035] Correspondingly, the driving device 300 in this embodiment includes a leveling electric cylinder 310, a connecting piece 320, two flying arms 330, two flying arm electric cylinders 340 and two swinging electric cylinders 350. The connection method of the leveling electric cylinder 310 and the connecting piece 320 is the same as that of the above embodiment, so it is not described in detail. The two flying arms 330 are arranged side by side, one end of the two flying arms 330 is hinged to the same connecting piece 320 through a pin, one end of the two flying arm electric cylinders 340 is hinged to the connecting piece 320 through a pin, and the other end of the two flying arm electric cylinders 340 is hinged to the two flying arms 330 through a pin. The two swinging electric cylinders 350 are connected to the other ends of the two flying arms 330 in a one-to-one correspondence, the axis of the swinging electric cylinder 350 rotating shaft is perpendicular to the length direction of the flying arm 330, and the two swinging electric cylinders 350 are connected to the two working platforms 400 in a one-to-one correspondence.

[0036] In one embodiment of the present invention, one end of the two flying arms 330 is on the same straight line with the hinge point of the connecting member 320, and one end of the two flying arm electric cylinders 340 is on the same straight line with the hinge point of the connecting member 320. The two flying arm electric cylinders 340 are of the same model. With such a setting, the two flying arm electric cylinders 340 can be used interchangeably during the installation process, which simplifies the assembly method and improves the assembly efficiency.

[0037] In one embodiment of the present invention, the driving device 300 further includes a distance sensor, which is arranged on the side where the two working platforms 400 face each other. The distance sensor is electrically connected to the swing electric cylinder 350, and the distance sensor is used to detect the distance between the two working platforms 400. When the distance between the two working platforms 400 is less than a predetermined distance, the distance sensor controls the swing electric cylinder 350 to stop working to prevent the distance between the working platforms 400 from being too close, thereby avoiding possible collision or damage. By setting the distance sensor and the swing electric cylinder 350 for closed-loop control, the safety and work efficiency of the operation of the working platform 400 can be improved. By automatically controlling the distance between the two working platforms 400, human operating errors can be reduced and the accuracy of the operation can be improved.

[0038] In one embodiment of the present invention, the upper control box is arranged on the side of the working platform 400 facing the swing electric cylinder 350. When the working platform 400 is in operation, the working object is often on the side of the working platform 400 facing away from the swing electric cylinder 350. The upper control box is arranged on the side of the working platform 400 facing the swing electric cylinder 350, which has the following effects: First, the upper control box is arranged on the side of the working platform 400 facing the swing electric cylinder 350, which can avoid the mutual influence between the line connecting the upper control box and each electric cylinder and the working object, thereby improving the safety of the working process. Second, the upper control box is arranged on the side of the working platform 400 facing the swing electric cylinder 350, which can shorten the length of the line, thereby making the overall structure of the line more compact and simplifying the system layout. Third, the upper control box is arranged on the side of the working platform 400 facing the swing electric cylinder 350, and the upper control box is closer to the swing electric cylinder 350, which is convenient for maintenance and overhaul work, because all relevant components are concentrated together, reducing the working area that maintenance personnel need to cover.

[0039] In one embodiment of the present invention, a mounting seat is provided on one side of the working platform 400 facing the swing electric cylinder 350, and the upper control box is fixed to the mounting seat by bolts.

[0040] In one embodiment of the present invention, the lifting platform also includes a power supply device 600, which includes a cable 610. The cable 610 is electrically connected to the upper control box and the driving device. Specifically, the cable 610 is electrically connected to the upper control box. At the same time, the cable 610 is also electrically connected to the leveling electric cylinder 310, the flying arm electric cylinder 340 and the swing electric cylinder 350. The cable 610 provides power to the upper control box, the leveling electric cylinder 310, the flying arm electric cylinder 340 and the swing electric cylinder 350.

[0041] In one embodiment of the present invention, Figure 2As shown, the power supply device 600 also includes a cable reel 620, which is rotatably connected to the arm 200, and part of the cable 610 is wound on the cable reel 620. Since the length of the cable 610 needs to be changed according to the length of the arm 200 during the contraction or folding of the arm 200, it is possible to prevent the cable 610 from affecting the contraction or folding of the arm 200. By providing the cable reel 620, the cable 610 can be stored in an orderly manner and can be released when needed. When the arm 200 is unfolded or extended, the cable reel 620 is driven to rotate forward to release the cable 610 wound on the cable reel 620, so that the cable 610 is released along with the arm 200 when it is unfolded or extended, so that the length of the cable 610 is adapted to the length of the arm 200, and the cable 610 is prevented from being damaged by excessive stretching. When the boom 200 is folded or shortened, the cable reel 620 is driven to rotate in the opposite direction, and the cable 610 is wound around the cable reel 620, so that the cable 610 is recovered along with the boom 200 when it is folded or shortened. The cable 610 is wound around the cable reel 620 so that the length of the cable 610 matches the length of the boom 200, thereby preventing the cable 610 from being piled up or entangled. In addition, the cable 610 can also be connected to the lower control box, and the control signal can be transmitted to the upper control box through the cable 610.

[0042] In one embodiment of the present invention, the power supply device 600 further includes a driving assembly, which is disposed on the arm 200 and connected to the cable reel 620; the driving assembly is used to drive the cable reel 620 to rotate so that the cable 610 is released or recovered according to the extension or folding of the arm 200. The driving assembly can be a motor or a combination of a motor and a reducer. Preferably, the motor is a servo motor to ensure that the rotation angle of the motor can be accurately controlled.

[0043] In one embodiment of the present invention, the driving device is driven by electricity and may have various structural forms. The driving device may be a combination of multiple electric cylinders, a combination of multiple linear push rods, or a combination of other linear drive components.

[0044] In one embodiment of the present invention, the upper control box is wirelessly connected to the lower control box or remote control. By wirelessly connecting the upper control box to the lower control box or remote control, there is no need to use cable 610 to transmit control signals, which simplifies the structure of the lifting platform and facilitates the control of the lifting platform.

[0045] In one embodiment of the present invention, the platform body 100 includes a chassis 110, a turntable 120 and a luffing electric cylinder 130. The turntable 120 is rotatably arranged on the upper part of the chassis 110. A counterweight 140 is arranged at the rear end of the turntable 120. The other end of the boom 200 is hinged to the turntable 120. One end of the luffing electric cylinder 130 is hinged to the turntable 120, and the other end of the luffing electric cylinder 130 is hinged to the boom 200.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting platform, characterized in that: include: Platform body (100); A boom (200), one end of the boom (200) being connected to the platform body (100); A driving device (300), the driving device (300) being connected to the other end of the arm (200); A working platform (400), the working platform (400) being connected to the driving device (300), the driving device (300) being used to use electricity as a power to drive the working platform (400) to move, thereby changing the position of the working platform (400).

2. The lifting platform according to claim 1, characterized in that: The driving device (300) comprises: A leveling electric cylinder (310), one end of the leveling electric cylinder (310) being hinged to the other end of the arm (200); A connecting piece (320), the connecting piece (320) being hingedly connected to the other end of the leveling electric cylinder (310) and the other end of the arm (200); at least one flying arm (330), one end of the flying arm (330) being hinged to the connecting member (320); At least one flying arm electric cylinder (340), one end of the flying arm electric cylinder (340) being hinged to the connecting piece (320), and the other end of the flying arm electric cylinder (340) being hinged to the flying arm (330); At least one swing electric cylinder (350), the swing electric cylinder (350) being connected to the other end of the flying arm (330) and the working platform (400).

3. The lifting platform according to claim 2, characterized in that: The lifting platform comprises two working platforms (400), and the driving device (300) comprises two flying arms (330), two flying arm electric cylinders (340) and two swing electric cylinders (350); one end of the two flying arms (330) is hinged to the connecting member (320); one end of the two flying arm electric cylinders (340) is hinged to the connecting member (320); the other end of the two flying arm electric cylinders (340) is hinged to the two flying arms (330) in a one-to-one correspondence; the other end of the two flying arms (330) is connected to the two swing electric cylinders (350) in a one-to-one correspondence; and the two swing electric cylinders (350) are connected to the two working platforms (400) in a one-to-one correspondence.

4. The lifting platform according to claim 3, characterized in that: One end of the two flying arms (330) and the hinge point of the connecting member (320) are located on the same straight line, and one end of the two flying arm electric cylinders (340) and the hinge point of the connecting member (320) are located on the same straight line.

5. The lifting platform according to claim 3, characterized in that: The driving device (300) further comprises: A distance sensor, the distance sensor being arranged on a side where the two working platforms (400) face each other, the distance sensor being electrically connected to the swing electric cylinder (350), the distance sensor being used to detect the distance between the two working platforms (400), and when the distance between the two working platforms (400) is less than a predetermined value, the distance sensor controls the swing electric cylinder (350) to stop working.

6. The lifting platform according to any one of claims 1 to 5, characterized in that: Also includes: A power supply device (600), the power supply device (600) comprising a cable (610), the cable (610) being electrically connected to the drive device, the cable (610) being used to supply power to the drive device.

7. The lifting platform according to claim 6, characterized in that: The power supply device (600) further includes: A cable reel (620), the cable reel (620) being rotatably connected to the arm (200), and a portion of the cable (610) being wound around the cable reel (620).

8. The lifting platform according to claim 7, characterized in that: The power supply device (600) further includes: A drive assembly, the drive assembly being arranged on the arm (200) and connected to the cable reel (620); the drive assembly being used to drive the cable reel (620) to rotate, so that the cable (610) is released or recovered according to the extension or folding condition of the arm (200).

9. The lifting platform according to claim 7, characterized in that: Also includes: An upper control box, the upper control box being arranged on the working platform (400), the upper control box being electrically connected to the driving device and the cable (610), the upper control box being used to control the driving device to perform corresponding actions according to instructions, and the cable (610) being also used to supply power to the upper control box.

10. The lifting platform according to any one of claims 1 to 5, characterized in that: The platform body (100) comprises: chassis (110); a turntable (120), the turntable (120) being rotatably disposed on the upper portion of the chassis (110), a counterweight (140) being disposed at the rear end of the turntable (120), and the other end of the arm (200) being hinged to the turntable (120); A luffing electric cylinder (130), one end of the luffing electric cylinder (130) being hinged to the turntable (120), and the other end of the luffing electric cylinder (130) being hinged to the boom (200).

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