Scissor fork type lifting platform with rotating shaft directly driven by motor and magnetic suspension device

Abstract

The utility model discloses a shears-fork type lifting platform with a motor directly driving a rotating shaft and a magnetic suspension device, and the lifting platform comprises a base, a lifting platform, a first shears-fork assembly installed between the base and the lifting platform, and a driving motor installed on the base and used for driving the first shears-fork assembly; the first shear fork assembly comprises a first connecting rod and a second connecting rod rotationally connected with the first connecting rod, the first end of the first connecting rod is rotationally connected with the base through a first rotating shaft, and the second end of the first connecting rod is rotationally connected with the lifting table through a second rotating shaft. An output shaft of the driving motor is connected with the first rotating shaft and used for driving the first rotating shaft and the first connecting rod to rotate.

Description

Technical Field

[0001] The utility model relates to the field of lifting platforms, and more specifically, to a scissor lifting platform with a motor directly driving a rotating shaft and a magnetic levitation device. Background Art

[0002] The scissor lifting platform is a special high-altitude operation equipment for vertical lifting and has wide indoor and outdoor applications. It can be widely used for equipment maintenance, mechanical installation, equipment maintenance, and building maintenance indoors and outdoors at stations, docks, bridges, halls, and factories.

[0003] At the same time, small scissor lifting platforms are also widely used in indoor production links. Common small scissor lifting platforms usually use manual or motor-driven lead screws to adjust the distance between the left and right parallel axes of the scissor lifting platform. Through the scissor structure, the torque is converted into the power for platform lifting. This structure uses the lead screw and nut structure for driving, and the lifting platform needs to be provided with structures such as lead screws and nuts, resulting in a complex and heavy structure of the lifting platform. Summary of the Utility Model

[0004] The utility model aims at the above-mentioned defects of the prior art and provides a scissor lifting platform with a motor directly driving a rotating shaft and a magnetic levitation device.

[0005] The technical solution adopted by the utility model to solve its technical problems is to construct a scissor lifting platform with a motor directly driving a rotating shaft. The lifting platform includes a base, a lifting table, a first scissor assembly installed between the base and the lifting table, and a driving motor installed on the base for driving the first scissor assembly;

[0006] The first scissor assembly includes a first connecting rod and a second connecting rod rotatably connected to the first connecting rod. The first end of the first connecting rod is rotatably connected to the base through a first rotating shaft, the second end of the first connecting rod is rotatably connected to the lifting table through a second rotating shaft, and the output shaft of the driving motor is connected to the first rotating shaft and is used to drive the first rotating shaft and the first connecting rod to rotate.

[0007] In the scissor lifting platform with a motor directly driving a rotating shaft of the utility model, the first rotating shaft is fixedly connected to the first end of the first connecting rod, or the first rotating shaft is key-connected to the first end of the first connecting rod, or the first rotating shaft is locked and connected to the first end of the first connecting rod by screws or bolts;

[0008] The output shaft of the driving motor and the first rotating shaft are integrally formed by the same shaft, or the output shaft of the driving motor and the first rotating shaft are detachably fixedly connected.

[0009] In the scissor lift platform where the motor directly drives the rotating shaft according to the present utility model, the first end of the second connecting rod is rotatably connected to the base through a third rotating shaft, and the second end of the second connecting rod is rotatably connected to the lifting platform through a fourth rotating shaft;

[0010] The base is provided with a first shaft hole for the first rotating shaft to be rotatably connected, and a third shaft hole for the third rotating shaft to be rotatably connected. The lifting platform is provided with a second shaft hole for the second rotating shaft to be rotatably connected, and a fourth shaft hole for the fourth rotating shaft to be rotatably connected. The first shaft hole and the fourth shaft hole are both circular holes. The second shaft hole is a long-strip second shaft hole for the second rotating shaft to rotate and slide horizontally, and the third shaft hole is a long-strip third shaft hole for the third rotating shaft to rotate and slide horizontally.

[0011] In the scissor lift platform where the motor directly drives the rotating shaft according to the present utility model, the lift platform further includes a second scissor assembly. The first scissor assembly and the second scissor assembly are respectively arranged on opposite sides of the base and the lifting platform. The second scissor assembly includes a third connecting rod and a fourth connecting rod rotatably connected to the third connecting rod.

[0012] In the scissor lift platform where the motor directly drives the rotating shaft according to the present utility model, the first end of the third connecting rod is rotatably connected to the base through a fifth rotating shaft, the second end of the third connecting rod is rotatably connected to the lifting platform through a sixth rotating shaft, the first end of the fourth connecting rod is rotatably connected to the base through a seventh rotating shaft, and the second end of the fourth connecting rod is rotatably connected to the lifting platform through an eighth rotating shaft.

[0013] The base is provided with a fifth shaft hole for the fifth rotating shaft to be rotatably connected, and a seventh shaft hole for the seventh rotating shaft to be rotatably connected. The lifting platform is provided with a sixth shaft hole for the sixth rotating shaft to be rotatably connected, and an eighth shaft hole for the eighth rotating shaft to be rotatably connected. The fifth shaft hole and the eighth shaft hole are both circular holes. The sixth shaft hole is a long-strip sixth shaft hole for the sixth rotating shaft to rotate and slide horizontally, and the seventh shaft hole is a long-strip seventh shaft hole for the seventh rotating shaft to rotate and slide horizontally.

[0014] In the scissor lift platform where the motor directly drives the rotating shaft according to the present utility model, the driving motor is a reduction motor. The first output end of the output shaft of the driving motor is connected to the first rotating shaft, and the second output end of the output shaft of the driving motor is connected to the fifth rotating shaft;

[0015] The fifth rotating shaft is fixedly connected to the first end of the third connecting rod, or the fifth rotating shaft is key-connected to the first end of the third connecting rod, or the fifth rotating shaft is locked and connected to the first end of the third connecting rod by screws or bolts;

[0016] The output shaft of the drive motor is integrally formed with the first rotating shaft and the fifth rotating shaft by the same shaft, or, the first output end of the output shaft of the drive motor is detachably and fixedly connected to the first rotating shaft, and the second output end of the output shaft of the drive motor is detachably and fixedly connected to the fifth rotating shaft.

[0017] In the scissor lift platform of the present utility model where the motor directly drives the rotating shaft, an angle sensor for detecting the rotation angle of the output shaft is sleeved on the output shaft of the drive motor.

[0018] In the scissor lift platform of the present utility model where the motor directly drives the rotating shaft, a torsion spring for restricting the rotation of the output shaft and a housing sleeve fixedly sleeved outside the output shaft are sleeved on the output shaft of the drive motor. The torsion spring is installed in the housing sleeve. The first end of the torsion spring elastically abuts against the housing sleeve or the output shaft, and the second end of the torsion spring elastically abuts against the base.

[0019] Another technical solution adopted by the present utility model to solve its technical problems is: constructing a magnetic levitation device, which includes the above-mentioned lift platform and a magnetic levitation assembly arranged on the lift platform.

[0020] Implementing the scissor lift platform and the magnetic levitation device of the present utility model where the motor directly drives the rotating shaft has the following beneficial effects: When using the scissor lift platform of the present utility model where the motor directly drives the rotating shaft, control the drive motor to start. The drive motor drives the first rotating shaft and the first connecting rod to rotate through the output shaft. The first connecting rod rotates around the first rotating shaft, so that the second end of the second connecting rod pushes the lift platform to rise and fall, and the lifting control of the lift platform can be realized. In this application, by directly driving the first rotating shaft and the first connecting rod to rotate through the drive motor, redundant drive connection structures are reduced, making the lift platform more concise and reducing the weight of the lift platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following will further illustrate the present utility model in conjunction with the drawings. In the drawings:

[0022] Figure 1 is a schematic structural diagram of the first embodiment of the scissor lift platform of the present utility model where the motor directly drives the rotating shaft;

[0023] Figure 2 is a schematic structural diagram of the second embodiment of the scissor lift platform of the present utility model where the motor directly drives the rotating shaft;

[0024] Figure 3 is a schematic structural diagram of the second embodiment of the scissor lift platform of the present utility model in the retracted state. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0026] As Figure 1 , 2 , shown in Fig. 3, in the first embodiment of the scissor lift platform where the motor directly drives the rotating shaft of the present utility model, the lift platform 10 includes a base 11, a lift table 12, a first scissor assembly installed between the base 11 and the lift table 12, and a drive motor 13 installed on the base 11 for driving the first scissor assembly.

[0027] The first scissor assembly includes a first connecting rod 14 and a second connecting rod 15 rotatably connected to the first connecting rod 14. The first end of the first connecting rod 14 is rotatably connected to the base 11 through a first rotating shaft 16, and the second end of the first connecting rod 14 is rotatably connected to the lift table 12 through a second rotating shaft 17. The output shaft of the drive motor 13 is connected to the first rotating shaft 16 and is used to drive the first rotating shaft 16 and the first connecting rod 14 to rotate.

[0028] It can be understood that the middle parts of the first connecting rod 14 and the second connecting rod 15 are also rotatably connected through a rotating shaft.

[0029] Preferably, the drive motor 13 is a reduction servo motor or a servo motor equipped with a reducer, which can rely on the reducer to drive the motor 13 or the reducer to form self-locking, or rely on the continuous power-on of the drive motor 13 to support the lift table 12.

[0030] When using the scissor lift platform of the present utility model where the motor directly drives the rotating shaft, control the drive motor 13 to start. The drive motor 13 drives the first rotating shaft 16 and the first connecting rod 14 to rotate through the output shaft. The first connecting rod 14 rotates around the first rotating shaft 16, so that the second end of the second connecting rod 15 pushes the lift table 12 to rise and fall, and the lifting control of the lift table 12 can be realized. In this application, by directly driving the first rotating shaft 16 and the first connecting rod 14 to rotate through the drive motor 13, redundant drive connection structures are reduced, making the lift platform 10 more concise and reducing the weight of the lift platform 10.

[0031] The mechanism structure of the lift platform 10 of this application is more concise, which is beneficial to miniaturized products. And directly convert the torque of the drive motor 13 into the torque for the first connecting rod 14 to lift the lift table 12, with higher mechanical efficiency and higher flexibility. Compared with the prior art solutions, the internal force of the system is smaller, and the structural strength requirements for the material of the product frame part are lower.

[0032] In this embodiment, the first rotating shaft 16 is fixedly connected to the first end of the first connecting rod 14. The output shaft of the driving motor 13 is fixedly connected or key-connected to the first rotating shaft 16, so as to drive the first rotating shaft 16 and the first connecting rod 14.

[0033] In another embodiment, the first rotating shaft 16 is key-connected to the first end of the first connecting rod 14. The output shaft of the driving motor 13 drives the first rotating shaft 16 to rotate, and the first rotating shaft 16 then drives the first connecting rod 14 to rotate through a key connection structure. Or, the first rotating shaft 16 and the first end of the first connecting rod 14 are locked and connected by screws or bolts. The output shaft of the driving motor 13 drives the first rotating shaft 16 to rotate, and the first rotating shaft 16 then drives the first connecting rod 14 to rotate.

[0034] In this embodiment, the output shaft of the driving motor 13 and the first rotating shaft 16 are integrally formed by the same shaft. That is to say, the output shaft and the first rotating shaft 16 are formed by the same shaft. Preferably, the output shaft is a polygonal output shaft.

[0035] In other embodiments, the output shaft of the driving motor 13 and the first rotating shaft 16 are detachably and fixedly connected. For example: fixedly connected through a flange, or directly locked and connected by bolts and screws, etc.

[0036] Furthermore, the first end of the second connecting rod 15 is rotatably connected to the base 11 through a third rotating shaft 18, and the second end of the second connecting rod 15 is rotatably connected to the lifting platform 12 through a fourth rotating shaft 19.

[0037] Furthermore, the base 11 is provided with a first shaft hole for the first rotating shaft 16 to be rotatably connected, a third shaft hole 21 for the third rotating shaft 18 to be rotatably connected. The lifting platform 12 is provided with a second shaft hole 20 for the second rotating shaft 17 to be rotatably connected, a fourth shaft hole for the fourth rotating shaft 19 to be rotatably connected. The first shaft hole and the fourth shaft hole are both circular holes. The second shaft hole 20 is a long-strip second shaft hole 20 for the second rotating shaft 17 to rotate and horizontally slide, and the third shaft hole 21 is a long-strip third shaft hole 21 for the third rotating shaft 18 to rotate and horizontally slide.

[0038] During the lifting process, the first rotating shaft 16 and the fourth rotating shaft 19 rotate in the first shaft hole and the fourth shaft hole respectively. The second rotating shaft 17 rotates in the second shaft hole 20 and horizontally moves along the second shaft hole 20 at the same time. The third rotating shaft 18 rotates in the third shaft hole 21 and horizontally moves along the second shaft hole 20 at the same time.

[0039] Such as Figure 1As shown in the figure, to achieve a better supporting effect, the lifting platform 10 further includes a second scissor assembly. The first scissor assembly and the second scissor assembly are respectively arranged on opposite sides of the base 11 and the lifting table 12. The second scissor assembly includes a third connecting rod 24 and a fourth connecting rod 25 rotatably connected to the third connecting rod 24.

[0040] The first end of the third connecting rod 24 is rotatably connected to the base 11 through a fifth rotating shaft, and the second end of the third connecting rod 24 is rotatably connected to the lifting table 12 through a sixth rotating shaft. The first end of the fourth connecting rod 25 is rotatably connected to the base 11 through a seventh rotating shaft, and the second end of the fourth connecting rod 25 is rotatably connected to the lifting table 12 through an eighth rotating shaft. The base 11 is provided with a fifth shaft hole for rotatably connecting the fifth rotating shaft and a seventh shaft hole for rotatably connecting the seventh rotating shaft. The lifting table 12 is provided with a sixth shaft hole for rotatably connecting the sixth rotating shaft and an eighth shaft hole for rotatably connecting the eighth rotating shaft. The fifth shaft hole and the eighth shaft hole are both circular holes. The sixth shaft hole is a long strip-shaped sixth shaft hole for the sixth rotating shaft to rotate and slide horizontally, and the seventh shaft hole is a long strip-shaped seventh shaft hole for the seventh rotating shaft to rotate and slide horizontally.

[0041] The second scissor assembly has the same structure and operating principle as the first scissor assembly, and will not be elaborated here.

[0042] Preferably, the driving motor 13 is a reduction motor. The first output end 22 of the output shaft of the driving motor 13 is connected to the first rotating shaft 16, and the second output end 23 of the output shaft of the driving motor 13 is connected to the fifth rotating shaft.

[0043] The first output end 22 and the second output end 23 of the output shaft of the driving motor 13 synchronously drive the first connecting rod 14 and the third connecting rod to rotate, achieving a better stable supporting effect.

[0044] Specifically, the fifth rotating shaft is fixedly connected to the first end of the third connecting rod, or, the fifth rotating shaft is key-connected to the first end of the third connecting rod, or, the fifth rotating shaft is locked and connected to the first end of the third connecting rod by screws or bolts.

[0045] In this embodiment, the driving motor 13 is a coaxial double-output reduction motor. The output shaft of the driving motor 13 is integrally formed with the first rotating shaft 16 and the fifth rotating shaft by the same shaft, and the output shaft is a polygonal output shaft.

[0046] In other embodiments, the driving motor 13 can also be other double-output shaft reduction motors. The first output end 11 of the output shaft of the driving motor 13 is detachably and fixedly connected to the first rotating shaft 16, and the second output end 23 of the output shaft of the driving motor 13 is detachably and fixedly connected to the fifth rotating shaft.

[0047] Further, in order to better detect and control the rotation angle of the output shaft and facilitate the control and adjustment of the lifting height of the lifting table 12, an angle sensor 27 for detecting the rotation angle of the output shaft is sleeved on the output shaft of the driving motor 13. Further, to enhance the support stability, a torsion spring 28 for restricting the rotation of the output shaft and a housing sleeve 29 fixedly sleeved outside the output shaft are sleeved on the output shaft of the driving motor 13. The torsion spring 28 is installed inside the housing sleeve 29. The first end of the torsion spring 28 elastically abuts against the housing sleeve 29 or the output shaft, and the second end of the torsion spring 28 elastically abuts against the base 11.

[0048] After the output shaft drives the lifting table to rise to the required height, the torsion spring 28 reversely pushes the output shaft under the action of its own elastic restoring force, which can prevent the output shaft from rotating, thereby stably holding the lifting table at this height.

[0049] In another embodiment, the lifting platform 10 further includes a third scissor assembly. The third scissor assembly and the first scissor assembly are arranged side by side at both ends of the base 11 and the lifting table 12. The second scissor assembly includes a third connecting rod 24 and a fourth connecting rod 25 rotatably connected to the third connecting rod 24.

[0050] In the first embodiment of the magnetic levitation device of the present invention, the magnetic levitation device includes the above-mentioned lifting platform 10 and a magnetic levitation assembly 26 arranged on the lifting table 12.

[0051] In addition, in the present invention, unless otherwise clearly defined and limited, terms such as "connected", "connected", "stacked" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A scissor lift platform with a motor directly driving a rotating shaft, characterized in that: The lifting platform comprises a base, a lifting platform, a first scissor assembly installed between the base and the lifting platform, and a driving motor installed on the base for driving the first scissor assembly; The first scissors assembly includes a first connecting rod and a second connecting rod rotatably connected to the first connecting rod, the first end of the first connecting rod is rotatably connected to the base via a first rotating shaft, the second end of the first connecting rod is rotatably connected to the lifting platform via a second rotating shaft, and the output shaft of the driving motor is connected to the first rotating shaft and is used to drive the first rotating shaft and the first connecting rod to rotate.

2. The scissor-type lifting platform with a motor directly driving the rotating shaft according to claim 1 is characterized in that: The first rotating shaft is fixedly connected to the first end of the first connecting rod, or the first rotating shaft is key-connected to the first end of the first connecting rod, or the first rotating shaft is locked and connected to the first end of the first connecting rod by screws or bolts; The output shaft of the driving motor and the first rotating shaft are formed integrally with each other by the same shaft, or the output shaft of the driving motor and the first rotating shaft are detachably fixedly connected.

3. The scissor-type lifting platform with a motor directly driving a rotating shaft according to claim 1, characterized in that: The first end of the second connecting rod is rotatably connected to the base via a third rotating shaft, and the second end of the second connecting rod is rotatably connected to the lifting platform via a fourth rotating shaft; The base is provided with a first axial hole for rotatably connecting the first rotating shaft and a third axial hole for rotatably connecting the third rotating shaft. The lifting platform is provided with a second axial hole for rotatably connecting the second rotating shaft and a fourth axial hole for rotatably connecting the fourth rotating shaft. Both the first axial hole and the fourth axial hole are round holes. The second axial hole is an elongated second axial hole for rotating and sliding horizontally of the second rotating shaft. The third axial hole is an elongated third axial hole for rotating and sliding horizontally of the third rotating shaft.

4. The scissor-type lifting platform with a motor directly driving a rotating shaft according to claim 1, characterized in that: The lifting platform also includes a second scissors assembly. The first scissors assembly and the second scissors assembly are respectively arranged on opposite sides of the base and the lifting platform. The second scissors assembly includes a third connecting rod and a fourth connecting rod rotatably connected to the third connecting rod.

5. The scissor-type lifting platform with a motor directly driving a rotating shaft according to claim 4, characterized in that: The first end of the third connecting rod is rotatably connected to the base via a fifth rotating shaft, the second end of the third connecting rod is rotatably connected to the lifting platform via a sixth rotating shaft, the first end of the fourth connecting rod is rotatably connected to the base via a seventh rotating shaft, and the second end of the fourth connecting rod is rotatably connected to the lifting platform via an eighth rotating shaft.

6. The scissor-type lifting platform with a motor directly driving a rotating shaft according to claim 5, characterized in that: The base is provided with a fifth axis hole for rotatably connecting the fifth rotating shaft and a seventh axis hole for rotatably connecting the seventh rotating shaft. The lifting platform is provided with a sixth axis hole for rotatably connecting the sixth rotating shaft and an eighth axis hole for rotatably connecting the eighth rotating shaft. Both the fifth axis hole and the eighth axis hole are round holes. The sixth axis hole is an elongated sixth axis hole for rotating and horizontally sliding the sixth rotating shaft. The seventh axis hole is an elongated seventh axis hole for rotating and horizontally sliding the seventh rotating shaft.

7. The scissor-type lifting platform with a motor directly driving a rotating shaft according to claim 5, characterized in that: The driving motor is a reduction motor, the first output end of the output shaft of the driving motor is connected to the first rotating shaft, and the second output end of the output shaft of the driving motor is connected to the fifth rotating shaft; The fifth rotating shaft is fixedly connected to the first end of the third connecting rod, or the fifth rotating shaft is key-connected to the first end of the third connecting rod, or the fifth rotating shaft is locked and connected to the first end of the third connecting rod by screws or bolts; The output shaft of the drive motor is integrally formed with the first rotating shaft and the fifth rotating shaft by the same shaft, or the first output end of the output shaft of the drive motor is detachably fixedly connected to the first rotating shaft, and the second output end of the output shaft of the drive motor is detachably fixedly connected to the fifth rotating shaft.

8. The scissor-type lifting platform with a motor directly driving a rotating shaft according to claim 1, characterized in that: An angle sensor for detecting the rotation angle of the output shaft is sleeved on the output shaft of the driving motor.

9. The scissor-type lifting platform with a motor directly driving a rotating shaft according to claim 1, characterized in that: The output shaft of the driving motor is provided with a torsion spring which can be used to limit the rotation of the output shaft, and a shell sleeve which is fixedly provided on the outside of the output shaft. The torsion spring is installed in the shell sleeve, and the first end of the torsion spring is elastically abutted against the shell sleeve or the output shaft, and the second end of the torsion spring is elastically abutted against the base.

10. A magnetic levitation device, characterized in that: The magnetic suspension device comprises a lifting platform according to any one of claims 1 to 9, and a magnetic suspension component arranged on the lifting platform.

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