High-altitude operation machine

Abstract

The invention discloses a high-altitude operation machine. The high-altitude operation machine comprises a rotary table, an arm frame, a first arm frame luffing mechanism and a second arm frame luffing mechanism. One end of the arm frame is hinged with a working platform, and the other end is hinged with a support; the first boom luffing mechanism is hinged between the support and the boom and is used for driving the boom to swing relative to the support; the second arm frame luffing mechanism is hinged between the support and the rotary table and used for driving the support to swing, and the direction in which the second arm frame luffing mechanism drives the support to swing is opposite to the direction in which the first arm frame luffing mechanism drives the arm frame to swing. During operation, compared with single variable-amplitude rotary motion in the prior art, the first arm frame variable-amplitude mechanism and the second arm frame variable-amplitude mechanism which are independent are adopted to drive the arm frame to achieve two variable-amplitude motion, and the operation platform can have higher freedom degree and operation selection; and more operation choices can enable an operator to arrive at an operation position more quickly and more easily, so that the working efficiency can be improved, and the applicable occasions of the machine are increased.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering machinery, and specifically relates to an aerial work machine. Background Art

[0002] Aerial work platforms are products that serve various industries for high-altitude work, equipment installation, maintenance and other mobile high-altitude work. Aerial work platform related products mainly include: scissor-type aerial work platforms, vehicle-mounted aerial work platforms, arm-type aerial work platforms, spider-type aerial work platforms and mast-type aerial work platforms. In the prior art, arm-type aerial work platforms generally use a variable-length mechanism to lift the boom, thereby achieving the function of aerial work. However, the variable-length mechanism of the current arm-type aerial work platform is driven by a variable-length oil cylinder, and can only achieve a rotational motion. During operation, in order to reach the working position, it can often only be achieved through the boom variable-length and boom telescopic operations, which has poor operational flexibility and low work efficiency. Summary of the invention

[0003] The purpose of the present application is to provide an aerial work machine to improve the operating freedom and efficiency of the aerial work platform.

[0004] In order to achieve the above-mentioned purpose, the present application provides an aerial work machine, comprising:

[0005] Turntable;

[0006] A boom, with a working platform hinged at one end and a support hinged at the other end;

[0007] A first boom luffing mechanism, hinged between the support and the boom and used to drive the boom to swing relative to the support;

[0008] The second boom luffing mechanism is hinged between the support and the turntable and is used to drive the support to swing. The direction in which the second boom luffing mechanism drives the support to swing is opposite to the direction in which the first boom luffing mechanism drives the boom to swing.

[0009] In some embodiments, the first boom amplitude changing mechanism includes a first linear driving member, one end of the first linear driving member is hinged to the boom, and the other end of the first linear driving member is hinged to the support, and the first linear driving member, the support and the boom form a triangular structure.

[0010] In some embodiments, the second boom amplitude adjustment mechanism includes a connecting rod assembly and a second linear drive member drivingly connected to the connecting rod assembly, the connecting rod assembly is connected between the support and the turntable, one end of the second linear drive member is hinged to the connecting rod assembly, and the other end is hinged to the turntable, and the connecting rod assembly, the second linear drive member, and the turntable form a triangular structure.

[0011] In some embodiments, the connecting rod assembly includes:

[0012] A first connecting rod, both ends of which are respectively hinged to the support and the turntable;

[0013] The second connecting rod has two ends respectively hinged to the support and the turntable, the second connecting rod is located above the first connecting rod, the second connecting rod and the first connecting rod are arranged in parallel and spaced apart and are located on different horizontal planes, and the first connecting rod, the second connecting rod, the support and the turntable form a parallelogram structure.

[0014] In some embodiments, one end of the second linear drive member is hinged to the turntable, and the other end of the second linear drive member is hinged to the first connecting rod or the second connecting rod.

[0015] In some embodiments, the first linear drive member and the second linear drive member are both luffing cylinders, and the telescopic ends of the luffing cylinders are hinged to corresponding components via connecting ear plates.

[0016] In some embodiments, the hinge point between the first linear drive member and the support is a first hinge point, the hinge point between the second connecting rod and the support is a second hinge point, the horizontal plane where the first hinge point is located is above the horizontal plane where the second hinge point is located, the hinge point between the first connecting rod and the support is a third hinge point, and the horizontal plane where the second hinge point is located is above the horizontal plane where the third hinge point is located.

[0017] In some embodiments, the hinge point between the second linear drive member and the connecting rod assembly is a fourth hinge point, the hinge point between the second linear drive member and the turntable is a fifth hinge point, and the angle between the line between the fourth hinge point and the fifth hinge point and the connecting rod assembly is an acute angle.

[0018] In some embodiments, the aerial work machine further includes a chassis, and the turntable is disposed on the chassis via a slewing mechanism.

[0019] In some embodiments, the connecting rod assembly and the second linear drive member are both installed at the front end of the turntable, and a balancing weight is also installed at the rear end of the turntable.

[0020] Through the above technical scheme, the first boom luffing mechanism is hinged between the support and the boom, and the first boom luffing mechanism can drive the boom to swing relative to the support; the second boom luffing mechanism is hinged between the support and the turntable to drive the support to swing, so that the support drives the boom and the working platform to swing together, and the direction in which the second boom luffing mechanism drives the support to swing is opposite to the direction in which the first boom luffing mechanism drives the boom to swing. In the present application, two boom luffing mechanisms are set up, and the first boom luffing mechanism and the second boom luffing mechanism are independent of each other, and there is no linkage between the two. The two rotational movements can be realized separately, or the two rotational movements can be combined, or the two rotational movements can be linked. During operation, compared with the single luffing rotational movement in the prior art, the present application has an additional rotational movement, which can give the working platform a higher degree of freedom and operation options. More operation options can enable the operator to reach the working position faster and easier, which can improve work efficiency and increase the applicable occasions of the machine.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0023] Figure 1 A schematic diagram of the structure of the aerial work machinery of this application;

[0024] Figure 2 It is a partially enlarged schematic diagram of the aerial work machinery of the present application.

[0025] Description of Reference Numerals

[0026] 10 Turntable 42 First connecting rod

[0027] 20 Arm 43 Second connecting rod

[0028] 30 First boom luffing mechanism 50 Working platform

[0029] 31 first linear drive member 60 support

[0030] 40 Second boom luffing mechanism 80 Chassis

[0031] 41 second linear drive member 90 flying arm DETAILED DESCRIPTION

[0032] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0033] The aerial work machine according to the present application will be described below with reference to the accompanying drawings.

[0034] Since the use conditions of boom-type aerial work platforms are very complex, in order to improve the working efficiency and expand the applicable working conditions, the aerial work platform is required to have a higher degree of freedom and more operating options. The existing boom-type aerial work platforms are all single-luffing mechanisms with low operating efficiency. Figure 1 As shown, the present application provides an aerial work machinery, which includes a turntable 10, a boom 20, a first boom luffing mechanism 30 and a second boom luffing mechanism 40; one end of the boom 20 is hinged with a working platform 50, and the other end is hinged with a support 60; the first boom luffing mechanism 30 is hinged between the support 60 and the boom 20 and is used to drive the boom 20 to swing relative to the support 60, so that the boom 20 can perform a first rotational movement; the second boom luffing mechanism 40 is hinged between the support 60 and the turntable 10 and is used to drive the support 60 to swing, so that the support 60 drives the boom 20 and the working platform 50 to swing together; wherein, the direction in which the second boom luffing mechanism 40 drives the support 60 to swing is opposite to the direction in which the first boom luffing mechanism 30 drives the boom 20 to swing.

[0035] The present application sets two boom luffing mechanisms, so that the boom 20 realizes rotational motion 2 under the drive of the first boom luffing mechanism 30, and the support 60 realizes rotational motion 1 under the drive of the second boom luffing mechanism 40, and the boom and the above parts realize translational motion under the drive of the support 60; and the first boom luffing mechanism 30 and the second boom luffing mechanism 40 are independent of each other, and there is no linkage between the two, so that rotational motion 1 and rotational motion 2 can be realized separately, or the two rotational motions can be combined, or the two rotational motions can be linked. During operation, compared with the single luffing rotational motion in the prior art, the present application has an additional rotational motion, which can give the working platform a higher degree of freedom and operation options. More operation options can enable the operator to reach the working position faster and easier, which can improve work efficiency and increase the applicable occasions of the machine.

[0036] In some embodiments, the first boom luffing mechanism 30 includes a first linear driving member 31, one end of the first linear driving member 31 is hinged to the boom 20, and the other end is hinged to the support 60, and the first linear driving member 31, the support 60 and the boom 20 form a triangular structure, so that the support 60, the first linear driving member 31 and the boom 20 form a three-hinge-point luffing mechanism. Since the first boom luffing mechanism 30 is connected between the support 60 and the boom 20, the boom 20 can realize rotational motion 2 under the drive of the first linear driving member 31, as shown in FIG. Figure 2 As shown, the movement direction of the rotational motion 2 is counterclockwise. Preferably, for a 28-meter aerial work vehicle, the swing angle range of the connecting rod driven by the rotational motion 2 is between 4.5° and 70°.

[0037] In some embodiments, the second boom luffing mechanism 40 includes a connecting rod assembly and a second linear drive member 41 drivingly connected to the connecting rod assembly, the connecting rod assembly is connected between the support 60 and the turntable 10, one end of the second linear drive member 41 is hinged to the connecting rod assembly, and the other end is hinged to the turntable 10, and a triangular structure is enclosed between the connecting rod assembly, the second linear drive member 41, and the turntable 10. In other words, the second linear drive member 41 drives the connecting rod assembly to swing around the hinge on the turntable 10, and because the second boom luffing mechanism 40 is connected between the support 60 and the turntable 10, when the connecting rod assembly performs a rotational motion 1, it can drive the boom 20 and the parts above it to maintain translational motion. Figure 2 As shown, the movement direction of the rotational movement 1 is clockwise, so that the arm 20 can more stably achieve translational movement driven by the rotational movement 1, thereby improving the degree of freedom of operation.

[0038] The boom amplitude change and connecting rod amplitude change of the parallel four-bar linkage mechanism in the prior art are an integrated structure, that is, the two are linked and move at the same time. For example, when the connecting rod is 75 degrees, the boom 20 must also be 70 degrees. The area that the working platform 50 can reach is affected by the linkage and has regional restrictions. The present application sets up a first boom amplitude change mechanism 30 and a second boom amplitude change mechanism 40 that are independent and do not affect each other. Two rotational movements can be driven by the two amplitude change mechanisms. After the two rotational movements are separated, the amplitude change can be controlled separately. The workable area of ​​the working platform 50, especially the horizontal working area, becomes larger. For example, under the premise of ensuring stability, when the connecting rod is 75 degrees, the boom 20 can be 0 degrees. The horizontal amplitude is much larger than before, which greatly improves the operational flexibility and work efficiency. Preferably, for a 28-meter aerial work vehicle, the swing angle range of the connecting rod driven by the rotational movement 1 is between 0 and 74.5°.

[0039] In some embodiments, the connecting rod assembly includes a first connecting rod 42 and a second connecting rod 43; both ends of the first connecting rod 42 and the second connecting rod 43 are respectively hinged to the support 60 and the turntable 10, the second connecting rod 43 is located above the first connecting rod 42, the second connecting rod 43 and the first connecting rod 42 are arranged in parallel and spaced apart and located on different horizontal planes, and a parallelogram structure is formed between the first connecting rod 42, the second connecting rod 43, the support 60 and the turntable 10. This parallelogram structure can make the horizontal amplitude of the boom 20 larger and improve the degree of freedom of operation. Of course, in other embodiments, the connecting rod assembly is not limited to the structure described in this application, and can also be arranged in other structures.

[0040] In some embodiments, one end of the second linear driving member 41 is hinged to the turntable 10 , and the other end is hinged to the first connecting rod 42 or the second connecting rod 43 .

[0041] It can be understood that there are two connection methods for the second linear drive member 41. In the first embodiment, one end of the second linear drive member 41 is hinged to the turntable 10, and the other end is hinged to the first connecting rod 42. By driving the first connecting rod 42, the rotational motion 1 is realized; in the second embodiment, one end of the second linear drive member 41 is hinged to the turntable 10, and the other end is hinged to the second connecting rod 43. In this embodiment, the second linear drive member 41 is connected between the turntable 10 and the second connecting rod 43. The upper second connecting rod 43 can realize the rotational motion 1 under the drive of the second linear drive member 41. The parallelogram mechanism can ensure that during movement, the arm 20 and the part above it maintain translation rather than rotation.

[0042] In some embodiments, the first linear driving member 31 and the second linear driving member 41 are both luffing cylinders, and the telescopic ends of the luffing cylinders are hinged to corresponding components through connecting ear plates.

[0043] For the convenience of explanation, the first linear drive member 31 is a first luffing oil cylinder, and the second linear drive member 41 is a second luffing oil cylinder. The end of the piston rod of the first luffing oil cylinder is hinged to the boom 20 through a connecting ear plate, and the bottom of the cylinder body is hinged to the support 60. The end of the piston rod of the second luffing oil cylinder is hinged to the first connecting rod 42 or the second connecting rod 43 through another connecting ear plate, and the bottom of the cylinder body of the second luffing oil cylinder is hinged to the turntable 10, and the corresponding connecting components are driven to swing around the hinge point through the telescopic movement of the piston rod of the luffing oil cylinder.

[0044] Of course, in other embodiments, the first linear drive member 31 and the second linear drive member 41 may also be other linear telescopic components, which drive the arm 20 to swing relative to the support 60 and the connecting rod to swing relative to the turntable 10 through linear telescopic motion. For example, the linear drive member may be a structure in which a driving motor cooperates with a rotating screw.

[0045] In some embodiments, the hinge point between the first linear drive member 31 and the support 60 is the first hinge point, the hinge point between the second link 43 and the support 60 is the second hinge point, and the horizontal plane where the first hinge point is located is located above the horizontal plane where the second hinge point is located. The hinge point between the first link 42 and the support 60 is the third hinge point, and the horizontal plane where the second hinge point is located is located above the horizontal plane where the third hinge point is located, so that the connecting rod assembly can maintain the maximum amplitude variation function and always maintain a parallelogram structure.

[0046] Through the above scheme, two amplitude-changing movements of the boom 20 can be realized through the first linear drive member 31 and the second linear drive member 41. The two amplitude-changing movements can be independent of each other or can be linked. Generally speaking, the boom 20 can have a higher degree of freedom during operation.

[0047] In addition, in order to maintain the triangular structure of the second boom luffing mechanism 40, the hinge point between the second linear drive member 41 and the connecting rod assembly is the fourth hinge point, the hinge point between the second linear drive member 41 and the turntable is the fifth hinge point, and the angle between the connecting line between the fourth hinge point and the fifth hinge point and the connecting rod assembly is an acute angle. In this way, the second luffing oil cylinder can achieve the maximum luffing in the process of driving the connecting rod assembly to swing.

[0048] like Figure 1 and Figure 2 As shown, the support 60 includes a first connection surface and a second connection surface that are perpendicularly connected to each other. The arm 20 and the bottom of the cylinder of the first variable-length oil cylinder are respectively connected to the two ends of the first connection surface, and the hinge point between the bottom of the cylinder of the first variable-length oil cylinder and the first connection surface is located at the connection between the first connection surface and the second connection surface; one end of the first connecting rod 42 and the second connecting rod 43 are respectively connected to the second connection surface, and the hinge point of the second connecting rod 43 and the second connection surface is located between the hinge point of the first connecting rod 42 and the second connection surface and the hinge point of the bottom of the cylinder of the first variable-length oil cylinder and the first connection surface. The structural form of other surfaces of the support 60 is not limited here. The support 60 can be a triangle, a quadrilateral, or a combination thereof. Figure 1 The pentagon or hexagon shown in the figure can be any shape as long as it has a first connecting surface and a second connecting surface to realize the hinged connection of the components.

[0049] Furthermore, the aerial work machine also includes a chassis 80 and the aerial work platform as described above, and the turntable 10 is arranged on the chassis 80. Among them, the connecting rod assembly and the second linear drive member 41 are both installed at the front end of the turntable 10, and a balancing weight is also installed at the rear end of the turntable 10. By setting the balancing weight to balance the weight of the front end of the turntable 10, the safety of the entire machine is improved.

[0050] In the boom-type aerial work machine of the present application, the turntable 10 is installed on the chassis 80 through a slewing mechanism, and the slewing mechanism drives the turntable 10 to rotate. A flying arm 90 is also connected between the boom 20 and the working platform 50, and the flying arm 90 and the working platform 50 are adjusted to a horizontal state through a leveling mechanism. When the work machine is working, the first luffing movement of the boom 20, the working platform 50 and the flying arm 90 is realized by the second luffing cylinder, and the second luffing movement of the boom 20 is realized by the first luffing cylinder. The two luffing movements can be moved separately, simultaneously, or in linkage, which greatly improves the freedom and efficiency of operation.

[0051] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] 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 present application. 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.

[0054] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A high-altitude working machine, characterized in that: include: Turntable (10); A boom (20) having a working platform (50) hingedly connected at one end and a support (60) hingedly connected at the other end; A first boom luffing mechanism (30) is hinged between the support (60) and the boom (20) and is used to drive the boom (20) to swing relative to the support (60); A second boom luffing mechanism (40) is hinged between the support (60) and the turntable (10) and is used to drive the support (60) to swing; the direction in which the second boom luffing mechanism (40) drives the support (60) to swing is opposite to the direction in which the first boom luffing mechanism (30) drives the boom (20) to swing.

2. The aerial work machine according to claim 1, characterized in that: The first boom amplitude changing mechanism (30) comprises a first linear driving member (31), one end of the first linear driving member (31) is hinged to the boom (20), and the other end of the first linear driving member (31) is hinged to the support (60), and the first linear driving member (31), the support (60) and the boom (20) form a triangular structure.

3. The aerial work machine according to claim 2, characterized in that: The second boom luffing mechanism (40) comprises a connecting rod assembly and a second linear drive member (41) drivingly connected to the connecting rod assembly, wherein the connecting rod assembly is connected between the support (60) and the turntable (10), one end of the second linear drive member (41) is hinged to the connecting rod assembly, and the other end is hinged to the turntable (10), and the connecting rod assembly, the second linear drive member (41), and the turntable (10) form a triangular structure.

4. The aerial work machine according to claim 3, characterized in that: The connecting rod assembly comprises: A first connecting rod (42), both ends of which are respectively hinged to the support (60) and the turntable (10); The second connecting rod (43) has two ends hinged to the support (60) and the turntable (10) respectively. The second connecting rod (43) is located above the first connecting rod (42). The second connecting rod (43) and the first connecting rod (42) are arranged in parallel and spaced apart and are located on different horizontal planes. The first connecting rod (42), the second connecting rod (43), the support (60) and the turntable (10) form a parallelogram structure.

5. The aerial work machine according to claim 4, characterized in that: One end of the second linear drive member (41) is hinged to the turntable (10), and the other end is hinged to the first connecting rod (42) or the second connecting rod (43).

6. The aerial work machine according to claim 4, characterized in that: The first linear drive member (31) and the second linear drive member (41) are both luffing oil cylinders, and the telescopic ends of the luffing oil cylinders are hinged to corresponding components via connecting ear plates.

7. The aerial work machine according to claim 6, characterized in that: The hinge point between the first linear drive member (31) and the support (60) is a first hinge point, the hinge point between the second connecting rod (43) and the support (60) is a second hinge point, the horizontal plane where the first hinge point is located is above the horizontal plane where the second hinge point is located, the hinge point between the first connecting rod (42) and the support (60) is a third hinge point, and the horizontal plane where the second hinge point is located is above the horizontal plane where the third hinge point is located.

8. The aerial work machine according to claim 6, characterized in that: The hinge point between the second linear drive member (41) and the connecting rod assembly is the fourth hinge point, the hinge point between the second linear drive member (41) and the turntable (10) is the fifth hinge point, and the angle between the line between the fourth hinge point and the fifth hinge point and the connecting rod assembly is an acute angle.

9. The aerial work machine according to any one of claims 3 to 8, characterized in that: The aerial work machine further comprises a chassis (80), and the turntable (10) is arranged on the chassis (80) via a slewing mechanism.

10. The aerial work machine according to claim 9, characterized in that: The connecting rod assembly and the second linear drive member (41) are both mounted on the front end of the turntable (10), and a balancing weight is also mounted on the rear end of the turntable (10).

Images