Self-leveling device of aerial work platform

Abstract

The utility model relates to the technical field of aerial work, in particular to a self-leveling device of an aerial work platform, which comprises a hoisting equipment arm support, an aerial work platform base and a self-leveling device arranged between the hoisting equipment arm support and the aerial work platform base, and the self-leveling device comprises a driving cylinder, a connecting rod I, a connecting rod II and a connecting rod III, the two ends of the driving cylinder are hinged to the top of the hoisting equipment boom and the middle of the first connecting rod respectively, one end of the first connecting rod is hinged to the hoisting equipment boom, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the bottom of the third connecting rod, and the top of the third connecting rod is hinged to the hoisting equipment boom. The working platform has the advantages that the loading capacity is high, the stability is higher, and the requirement on the load of five tons can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work, in particular to a self-leveling device for an aerial work platform. Background Art

[0002] Aerial work machinery is generally equipped with a manned work platform or functional attachments. During operation, as the boom varies in amplitude, the manned work platform or functional attachments are always required to remain horizontal with the ground, or in other words, regardless of how the boom angle changes, the angle of the manned work platform or functional attachments relative to the ground always remains unchanged. This requires a leveling mechanism or system that can follow and adjust the angle of the manned work platform or functional attachments according to the change of the boom angle. The existing self-leveling devices for aerial work platforms generally use a parallelogram four-link structure for leveling. However, the defect of this structure is that its load capacity is less than 200 - 400 KG. Therefore, a self-leveling device for an aerial work platform with a high load capacity and high stability, which can meet a load of five tons, is designed. Summary of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the utility model provides a self-leveling device for an aerial work platform, which has a high load capacity and high stability and can meet a load of five tons.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solutions: A self-leveling device for an aerial work platform, including a lifting equipment boom, a work platform base, and a self-leveling device arranged between the lifting equipment boom and the work platform base. The self-leveling device includes a driving cylinder, a connecting rod one, a connecting rod two, and a connecting rod three. Two ends of the driving cylinder are respectively hinged to the top of the lifting equipment boom and the middle of the connecting rod one. One end of the connecting rod one is hinged to the lifting equipment boom, the other end of the connecting rod one is hinged to one end of the connecting rod two, the other end of the connecting rod two is hinged to the bottom of the connecting rod three, the top of the connecting rod three is hinged to the lifting equipment boom, and the connecting rod three is fixedly installed on the work platform base.

[0007] Preferably, the connecting rod one is arranged in an arc shape and can surround the hinge joint between the connecting rod three and the lifting equipment boom.

[0008] Preferably, the driving cylinder and the lifting equipment boom are hinged through a hinge shaft six, and the driving cylinder and the connecting rod one are hinged through a hinge shaft three.

[0009] Preferably, both sides of the connecting rod two are respectively hinged to the connecting rod one and the connecting rod three through a hinge shaft two and a hinge shaft five.

[0010] Preferably, the boom of the lifting equipment is hinged to the third connecting rod through the fourth hinge shaft, and the first connecting rod surrounds the outside of the fourth hinge shaft.

[0011] (III) Advantageous Effects

[0012] Compared with the prior art, the present utility model provides a self-leveling device for an aerial work platform, which has the following advantageous effects:

[0013] In the self-leveling device for the aerial work platform, through the various cooperations among the driving cylinder, the first connecting rod, the second connecting rod and the third connecting rod, as well as the cooperation with the boom of the lifting equipment and the base of the work platform, when the inclination angle of the boom of the lifting equipment becomes larger, that is, when the boom of the lifting equipment is lifted upwards, the boom of the lifting equipment has a tendency to tilt backwards. During the process of the increase of the inclination angle of the boom of the lifting equipment, the driving cylinder can be synchronously shortened, so that the angle of the third connecting rod changes in the opposite direction, so that the boom of the lifting equipment always remains horizontal. When the inclination angle of the boom of the lifting equipment becomes smaller, the driving cylinder can be synchronously extended, so that the angle of the third connecting rod changes in the opposite direction, so that the boom of the lifting equipment always remains horizontal. This structure is simple, has a high load capacity, and has high stability, and can meet a load of five tons. Therefore, the self-leveling device for the aerial work platform has a high load capacity and high stability and can meet a load of five tons. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the whole in the lowest state of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the whole in the highest state of the present utility model.

[0016] Reference numerals in the drawings: 1. Boom of the lifting equipment; 2. Base of the work platform; 3. Driving cylinder; 4. First connecting rod; 5. Second connecting rod; 6. Third connecting rod; 7. First hinge shaft; 8. Second hinge shaft; 9. Third hinge shaft; 10. Fourth hinge shaft; 11. Fifth hinge shaft; 12. Sixth hinge shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Embodiment:

[0019] Please refer to Figure 1-2, a self-leveling device for an aerial work platform, comprising a boom 1 of a lifting device, a base 2 of the work platform, and a self-leveling device disposed between the boom 1 of the lifting device and the base 2 of the work platform. The self-leveling device includes a driving cylinder 3, a first connecting rod 4, a second connecting rod 5, and a third connecting rod 6. Both ends of the driving cylinder 3 are respectively hinged to the top of the boom 1 of the lifting device and the middle of the first connecting rod 4. One end of the first connecting rod 4 is hinged to the boom 1 of the lifting device, the other end of the first connecting rod 4 is hinged to one end of the second connecting rod 5, the other end of the second connecting rod 5 is hinged to the bottom of the third connecting rod 6, the top of the third connecting rod 6 is hinged to the boom 1 of the lifting device, and the third connecting rod 6 is fixedly installed on the base 2 of the work platform. Further, the boom 1 of the lifting device and the first connecting rod 4 are hinged through a first hinge shaft 7.

[0020] Specifically, the first connecting rod 4 is arranged in an arc shape and can surround the hinge joint between the third connecting rod 6 and the boom 1 of the lifting device. By arranging the first connecting rod 4 in an arc shape, the overall structural size can be shortened, and the rotation at the hinge joint between the third connecting rod 6 and the boom 1 of the lifting device can be ensured.

[0021] Specifically, the driving cylinder 3 and the boom 1 of the lifting device are hinged through a sixth hinge shaft 12, and the driving cylinder 3 and the first connecting rod 4 are hinged through a third hinge shaft 9. Through the settings of the sixth hinge shaft 12 and the third hinge shaft 9, it is convenient to ensure the telescoping of the driving cylinder 3. Further, the driving cylinder 3 can be provided with pneumatic drive or hydraulic drive, and preferably oil pressure drive in hydraulic drive is adopted.

[0022] Specifically, both sides of the second connecting rod 5 are respectively hinged to the first connecting rod 4 and the third connecting rod 6 through a second hinge shaft 8 and a fifth hinge shaft 11. Through the second hinge shaft 8 and the fifth hinge shaft 11, it is convenient to connect the second connecting rod 5 between the third connecting rod 6 and the first connecting rod 4, and convenient to provide support for self-leveling.

[0023] Specifically, the boom 1 of the lifting device and the third connecting rod 6 are hinged through a fourth hinge shaft 10, and the first connecting rod 4 surrounds the outside of the fourth hinge shaft 10. Through the setting of the fourth hinge shaft 10, it is convenient to connect the boom 1 of the lifting device and the third connecting rod 6.

[0024] It should be noted that phrases such as "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining specific features, structures, or characteristics with an embodiment, it is within the knowledge scope of those skilled in the art to implement such features, structures, or characteristics in combination with other embodiments, whether explicitly or implicitly described.

[0025] It should be easily understood that the terms "on", "above", and "over" in this disclosure should be interpreted in the broadest manner, such that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only include the meaning of "above" or "over something", but may also include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0026] In addition, for ease of description, spatial relative terms may be used in this text, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptive terms used in this text may be interpreted accordingly.

[0027] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include", or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the said element.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A self-leveling device for an aerial work platform, characterized in that: The invention comprises a lifting equipment arm (1), a working platform base (2) and a self-leveling device arranged between the lifting equipment arm (1) and the working platform base (2), wherein the self-leveling device comprises a driving cylinder (3), a connecting rod 1 (4), a connecting rod 2 (5) and a connecting rod 3 (6), wherein the two ends of the driving cylinder (3) are respectively hinged to the top of the lifting equipment arm (1) and the middle of the connecting rod 1 (4), one end of the connecting rod 1 (4) is hinged to the lifting equipment arm (1), the other end of the connecting rod 1 (4) is hinged to one end of the connecting rod 2 (5), the other end of the connecting rod 2 (5) is hinged to the bottom of the connecting rod 3 (6), the top of the connecting rod 3 (6) is hinged to the lifting equipment arm (1), and the connecting rod 3 (6) is fixedly mounted on the working platform base (2).

2. The self-leveling device for an aerial work platform according to claim 1, characterized in that: The connecting rod 1 (4) is arranged in an arc shape and can surround the intersection of the connecting rod 3 (6) and the lifting equipment arm (1).

3. The self-leveling device for an aerial work platform according to claim 2, characterized in that: The driving cylinder (3) is hinged to the lifting equipment arm (1) via a six-axle hinge (12), and the driving cylinder (3) is hinged to the connecting rod one (4) via a three-axle hinge (9).

4. The self-leveling device for an aerial work platform according to claim 3, characterized in that: The two sides of the connecting rod 2 (5) are respectively hinged to the connecting rod 1 (4) and the connecting rod 3 (6) through the twist shaft 2 (8) and the twist shaft 5 (11).

5. The self-leveling device for an aerial work platform according to claim 4, characterized in that: The lifting equipment arm (1) and the connecting rod three (6) are hinged via a hinge shaft four (10), and the connecting rod one (4) is wrapped around the outside of the hinge shaft four (10).

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