Fly boom structure and aerial work platform

Abstract

The utility model relates to the field of aerial work equipment, in particular to a fly boom structure and an aerial work platform. The telescopic arm support is provided with a first hinging part hinged to the telescopic arm, a second hinging part hinged to the leveling oil cylinder, a third hinging part hinged to the polygonal connecting rod and a fourth hinging part hinged to the auxiliary connecting rod, the fly boom structure further comprises a fly boom oil cylinder, and a first hinging end hinged to the middle section of the polygonal connecting rod is formed at one end of the fly boom oil cylinder; the fly jib structure further comprises a fifth hinge part, a second hinge end is formed at the end, away from the first hinge end, of the fly jib oil cylinder, and the second hinge end is hinged to the fifth hinge part. The fifth hinge part is located on the side, away from the third hinge part, of the connecting line of the first hinge end and the fourth hinge part. According to the utility model, by optimizing the structure of the telescopic boom bracket and adjusting the hinged position of the fly boom oil cylinder, the problems in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of aerial work equipment, in particular to a flying arm structure and an aerial work platform. Background Art

[0002] Aerial work platform is a kind of construction machinery. With the development of domestic construction technology and the improvement of safety requirements, aerial work platform has shown a rapid development trend in China. Safe and reliable structure, lightweight structural design, and stable operation are increasingly becoming the development direction of aerial work platform technology.

[0003] The flying arm structure connects the arm frame and the working basket, and the structure is relatively compact. Generally, the telescopic arm bracket 1 has 4 pins, one of which is connected to the telescopic arm, one is connected to the leveling cylinder, and the remaining two are connected to the flying arm connecting rod ear plate and the auxiliary connecting rod. The connection between the flying arm cylinder and the telescopic arm bracket 1 is generally borrowed from the auxiliary connecting rod pin. Figure 1 As shown, the flying arm cylinder 4 is hinged to the telescopic arm bracket 1 by means of the pin shaft of the auxiliary connecting rod 3, such as a boom and an aerial work platform having the boom disclosed in application No. 2022201304926, wherein the amplitude adjustment member 210 (equivalent to the flying arm cylinder 4) and the fourth connecting member 230 (equivalent to the auxiliary connecting rod 3) are coaxially hinged on the telescopic arm 100.

[0004] In this type of prior art, when the fly arm descends to the lowest position, the transmission angle of the fly arm cylinder is small, and the fly arm cylinder requires a larger pressure to push, so a fly arm cylinder with a larger load and size is required, resulting in an increase in the weight of the entire fly arm structure. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a flying arm structure and an aerial work platform, which effectively solves the problems existing in the prior art by optimizing the telescopic arm bracket structure and adjusting the hinge position of the flying arm cylinder.

[0006] In order to solve the above problems, the utility model provides a flying boom structure, which is connected to a telescopic boom, and includes a telescopic boom bracket, wherein the telescopic boom bracket has a first hinged portion hinged to the telescopic boom, a second hinged portion hinged to a leveling cylinder, a third hinged portion hinged to a polygonal connecting rod, and a fourth hinged portion hinged to an auxiliary connecting rod, wherein the flying boom structure also includes a flying boom cylinder, one end of which forms a first hinged end hinged to a middle section of the polygonal connecting rod, and further, the flying boom structure also includes a fifth hinged portion, an end of the flying boom cylinder away from the first hinged end forms a second hinged end, and the second hinged end is hinged to the fifth hinged portion;

[0007] Wherein, the fifth hinged portion is located on a side of a line connecting the first hinged end and the fourth hinged portion away from the third hinged portion.

[0008] Furthermore, the fifth hinged portion is arranged outside a line connecting a center of the fourth hinged portion and a center of the second hinged portion.

[0009] Furthermore, the telescopic arm bracket includes two mounting plates arranged opposite to each other and a connecting rib connected between the two mounting plates;

[0010] The mounting plate protrudes at the position of the fifth hinged portion to form a mounting portion, and the fifth hinged portion is mounted on the mounting portion.

[0011] Further, the first hinged part includes a first hinge axis, the second hinged part includes a second hinge axis, the third hinged part includes a third hinge axis, the fourth hinged part includes a fourth hinge axis, and the fifth hinged part includes a fifth hinge axis.

[0012] Furthermore, the polygonal connecting rod is provided with two connecting rod ear plates at the third hinge portion, and the telescopic arm bracket is hinged between the two connecting rod ear plates through the third hinge portion.

[0013] Furthermore, a hinge seat is provided in the middle section of the polygonal connecting rod, and the first hinge end is hinged to the hinge seat.

[0014] Furthermore, two auxiliary connecting rods are provided, and the fly arm cylinder is located between the two auxiliary connecting rods.

[0015] The utility model also provides an aerial work platform, comprising the above-mentioned flying arm structure.

[0016] The utility model has the beneficial effect of being simple in structure and effectively solving the problems existing in the prior art by optimizing the telescopic arm bracket structure and adjusting the hinge position of the flying arm oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 The figure is a schematic diagram of the structure of a flying arm structure in the prior art.

[0019] Figure 2 It is a structural schematic diagram of the flying arm structure in one embodiment of the utility model.

[0020] Figure 3 for Figure 2 The illustrated embodiment is a schematic structural diagram in another state.

[0021] Figure 4 for Figure 2 A schematic structural diagram of the telescopic arm support in the illustrated embodiment.

[0022] Among them: 1. telescopic arm bracket; 101. first hinge part; 102. second hinge part; 103. third hinge part; 104. fourth hinge part; 105. fifth hinge part; 2. polygonal connecting rod; 3. auxiliary connecting rod; 4. flying arm cylinder; 401. first hinge end; 5. mounting plate; 6. connecting rib; 7. connecting rod ear plate; 8. articulated seat. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0024] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the present utility model, 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 one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0028] In the present utility model, if Figure 2-4 As shown, a flying boom structure is provided, which is connected to a telescopic boom and includes a telescopic boom support 1, wherein the telescopic boom support 1 has a first hinged portion 101 hinged to the telescopic boom, a second hinged portion 102 hinged to the leveling cylinder, a third hinged portion 103 hinged to the polygonal connecting rod 2, and a fourth hinged portion 104 hinged to the auxiliary connecting rod 3, the flying boom structure also includes a flying boom cylinder 4, one end of which forms a first hinged end 401 hinged to the middle section of the polygonal connecting rod 2, and the flying boom structure also includes a fifth hinged portion 105, an end of the flying boom cylinder 4 away from the first hinged end 401 forms a second hinged end, and the second hinged end is hinged to the fifth hinged portion 105; wherein the fifth hinged portion 105 is located on the side of the line connecting the first hinged end 401 and the fourth hinged portion 104 away from the third hinged portion 103.

[0029] like Figure 1 As shown, in the prior art, the fly arm cylinder 4 is hinged to the fourth hinge part 104, and the transmission angle of the fly arm cylinder 4 is β. In the embodiment of the utility model, the fifth hinge part 105 is located on the side of the connecting line between the first hinge end 401 and the fourth hinge part 104 away from the third hinge part 103, as shown in FIG. Figure 3 As shown, the transmission angle of the fly arm cylinder 4 is α, so that α>β. From the force analysis of the cylinder, it can be seen that the cylinder force is F _c After the force is decomposed, the force that pushes the connecting rod to lift is F _v , there is F _v =F _c ·sinα. After the structural weight is determined, the external force F_v required to push the connecting rod is constant. By increasing the transmission angle α, the cylinder force F _c The fly arm structure is greatly reduced, so that a cylinder with a smaller cylinder diameter can be used, thereby further reducing the weight of the fly arm structure and further achieving lightweight of the fly arm structure.

[0030] In the illustrated embodiment, more specifically, the fifth hinge 105 is disposed outside the line connecting the center of the fourth hinge 104 and the center of the second hinge. As shown in the figure, the fifth hinge 105 protrudes outward from the outside of the telescopic arm support 1 as a whole, so as to facilitate the assembly of the telescopic arm support 1 and the fly arm cylinder 4.

[0031] In the illustrated embodiment, with regard to the structural form of the telescopic arm bracket 1, to be more specific, the telescopic arm bracket 1 includes two relatively arranged mounting plates 5 and a connecting rib 6 connected between the two mounting plates 5; the mounting plate 5 protrudes at the position of the fifth hinge portion 105 to form a mounting portion, and the fifth hinge portion 105 is mounted on the mounting portion.

[0032] In the illustrated embodiment, with regard to the structural form of each hinged part, to be more specific, as shown in the figure, the first hinged part 101 includes a first hinge axis, the second hinged part 102 includes a second hinge axis, the third hinged part 103 includes a third hinge axis, the fourth hinged part 104 includes a fourth hinge axis, and the fifth hinged part 105 includes a fifth hinge axis.

[0033] In the illustrated embodiment, for the articulation form of the polygonal connecting rod 2 and the telescopic arm bracket 1, to be more specific, as shown in the figure, the polygonal connecting rod 2 is provided with two connecting rod ear plates 7 at the third hinge portion 103, and the telescopic arm bracket 1 is hinged between the two connecting rod ear plates 7 through the third hinge portion 103. As shown in the figure, by providing two connecting rod ear plates 7, it is easy to process the articulation structure on the connecting rod ear plates 7, so as to facilitate the assembly of the polygonal connecting rod 2 and the telescopic arm bracket 1 together.

[0034] In the illustrated embodiment, with regard to the installation of the fly arm cylinder 4 , to be more specific, a hinge seat 8 is provided in the middle section of the polygonal connecting rod 2 , and the first hinge end 401 is hinged to the hinge seat 8 .

[0035] In the illustrated embodiment, with regard to the arrangement of the fly boom cylinder 4 , to be more specific, two auxiliary connecting rods 3 are provided, and the fly boom cylinder 4 is located between the two auxiliary connecting rods 3 .

[0036] The utility model also provides an aerial work platform, comprising the flying arm structure as described in the above embodiment.

[0037] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0038] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A flying boom structure, connected to a telescopic boom, comprising a telescopic boom bracket, wherein the telescopic boom bracket has a first hinged portion hinged to the telescopic boom, a second hinged portion hinged to a leveling cylinder, a third hinged portion hinged to a polygonal connecting rod, and a fourth hinged portion hinged to an auxiliary connecting rod, wherein the flying boom structure further comprises a flying boom cylinder, one end of which forms a first hinged end hinged to a middle section of the polygonal connecting rod, and wherein: The fly boom structure further includes a fifth hinged portion, an end of the fly boom cylinder away from the first hinged end forms a second hinged end, and the second hinged end is hinged to the fifth hinged portion; Wherein, the fifth hinged portion is located on a side of a line connecting the first hinged end and the fourth hinged portion away from the third hinged portion.

2. The flying arm structure according to claim 1, characterized in that: The fifth hinge portion is disposed outside a line connecting a center of the fourth hinge portion and a center of the second hinge portion.

3. The flying arm structure according to claim 2, characterized in that: The telescopic arm bracket includes two mounting plates arranged opposite to each other and a connecting rib connected between the two mounting plates; The mounting plate protrudes at the position of the fifth hinged portion to form a mounting portion, and the fifth hinged portion is mounted on the mounting portion.

4. The flying arm structure according to claim 3, characterized in that: The first hinged part includes a first hinged axis, the second hinged part includes a second hinged axis, the third hinged part includes a third hinged axis, the fourth hinged part includes a fourth hinged axis, and the fifth hinged part includes a fifth hinged axis.

5. The flying arm structure according to claim 1, characterized in that: The polygonal connecting rod is provided with two connecting rod ear plates at the third hinge portion, and the telescopic arm bracket is hinged between the two connecting rod ear plates through the third hinge portion.

6. The flying arm structure according to claim 1, characterized in that: A hinge seat is provided in the middle section of the polygonal connecting rod, and the first hinge end is hinged to the hinge seat.

7. The flying arm structure according to claim 1, characterized in that: There are two auxiliary connecting rods, and the fly arm cylinder is located between the two auxiliary connecting rods.

8. An aerial work platform, characterized in that: It comprises a flying arm structure as described in any one of claims 1 to 7.

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