Arm section, arm support and engineering machinery

Abstract

The invention relates to the field of arm supports, and discloses an arm joint, an arm support and engineering machinery, the arm joint comprises a plate-shaped upper-layer frame, a plate-shaped lower-layer frame and a plurality of web member structures, the arm joint is arranged to be switched between a use state and a transportation state, in the use state, the upper-layer frame and the lower-layer frame are spaced in the height direction, and in the transportation state, the upper-layer frame and the lower-layer frame are separated in the height direction. The two ends of the web member structure are connected to the upper-layer frame and the lower-layer frame correspondingly, in the transportation state, the two ends of the web member structure are separated from the upper-layer frame and the lower-layer frame correspondingly, and the upper-layer frame and the lower-layer frame are stacked in the height direction. And the sizes of the upper-layer frame and the lower-layer frame in the height direction are smaller than those of the upper-layer frame and the lower-layer frame in the use state in the height direction. According to the technical scheme, the web member structure is detachably connected with the upper-layer frame and the lower-layer frame, so that the web member structure is allowed to be detached in the transportation process, the section size of the cantilever crane is reduced, and the transportation difficulty and the transportation cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of booms, specifically to a boom section, a boom, and also to a type of engineering machinery. Background Technology

[0002] In the field of construction machinery, the boom plays a crucial role in cranes, and the width and height of the boom's cross-section can affect its lifting performance. A larger cross-section often indicates a greater maximum lifting height and maximum lifting capacity. However, if the boom's cross-section is too large, there are problems with transporting it due to its excessive width or height. In addition, an oversized boom occupies a lot of space, resulting in excessively high transportation costs. Summary of the Invention

[0003] The purpose of this invention is to overcome the problem that existing technologies have large-section booms that are inconvenient to transport.

[0004] To achieve the above objectives, the present invention provides a boom segment comprising a plate-shaped upper frame, a plate-shaped lower frame, and a plurality of web member structures. The boom segment is configured to switch between a use state and a transport state. In the use state, the upper frame and the lower frame are spaced apart along the height direction, and the two ends of the web member structures are respectively connected to the upper frame and the lower frame. In the transport state, the two ends of the web member structures are respectively detached from the upper frame and the lower frame. The upper frame and the lower frame are stacked along the height direction, and the dimensions of the upper frame and the lower frame along the height direction are smaller than the dimensions of the upper frame and the lower frame along the height direction in the use state.

[0005] In some embodiments, the transport state includes a first transport state, in which a plurality of the web structures are sequentially connected and disposed between the upper frame and the lower frame, at least one side of the web structure is connected to the upper frame, and at least another side of the web structure is connected to the lower frame.

[0006] In some embodiments, the arm segment includes two of the web structures, wherein, in the first transport state, the side of one of the web structures is connected to the upper frame, and the side of the other web structure is connected to the lower frame.

[0007] In some embodiments, the transportation state includes a second transportation state, in which the upper frame and the lower frame are stacked and directly connected.

[0008] In some embodiments, the upper frame includes two upper chords spaced apart along the width direction of the arm segment, the lower frame includes two lower chords spaced apart along the width direction of the arm segment, and the two ends of the web structure are respectively connected to the upper chords and the lower chords.

[0009] In some embodiments, the web structure includes four web members, with each upper chord member connected to two web members and each lower chord member connected to two web members.

[0010] In some embodiments, the web structure includes two web assemblies spaced apart along the width direction of the arm segment, each web assembly including two webs, and the two ends of the web assembly being respectively connected to the same upper chord and the same lower chord.

[0011] In some embodiments, the two web members of each web structure are separated from each other and not connected, and in the transport state, the two web members are stacked on top of each other; or, the two web members of each web structure are welded together by crossbars.

[0012] In addition, this solution provides a boom, including the boom segments of the above solutions.

[0013] In addition, this solution provides a type of construction machinery, which includes the boom of the above solution.

[0014] Through the above technical solution, the web structure and the upper and lower frames are detachably connected, allowing the web structure to be disassembled during transportation, thereby reducing the cross-sectional size of the boom and lowering the transportation difficulty and cost. Attached Figure Description

[0015] Figure 1 This is a front view of the arm segment described in this embodiment of the solution; Figure 2 This is a side view of the arm segment described in this embodiment of the solution; Figure 3 This is a schematic diagram of the boom section in the first transport state as described in this embodiment; Figure 4 This is a schematic diagram of a portion of the boom section structure described in this embodiment under the second transport state; Figure 5 This is a schematic diagram of the web member structure described in this embodiment under the second transport state; Figure 6 This is a front view of the arm segment described in another embodiment of this solution; Figure 7 This is a side view of the arm segment described in another embodiment of this solution; Figure 8This is a schematic diagram of the boom section in the second transport state according to another embodiment of this solution; Figure 9 This is a schematic diagram of the upper-level framework described in this embodiment of the solution; Figure 10 This is a schematic diagram of the lower frame structure described in this embodiment of the solution; Figure 11 This is a front view of the web member structure described in this embodiment; Figure 12 This is a side view of the web member structure described in this embodiment; Figure 13 This is a front view of the web member assembly described in this embodiment of the solution; Figure 14 This is a side view of the web member assembly described in this embodiment.

[0016] Explanation of reference numerals in the attached figures 10-Upper frame, 11-Upper chord, 20-Lower frame, 21-Lower chord, 30-Web structure, 31-Web member, 32-Cross member, 33-Web member assembly, 40-Connecting arm. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] refer to Figures 1-14 As shown, this solution provides an arm section, which includes a plate-shaped upper frame 10, a plate-shaped lower frame 20, and multiple web structures 30. The arm section is configured to switch between a use state and a transport state. In the use state, the upper frame 10 and the lower frame 20 are spaced apart along the height direction, and the two ends of the web structures 30 are respectively connected to the upper frame 10 and the lower frame 20. In the transport state, the two ends of the web structures 30 are detached from the upper frame 10 and the lower frame 20, and the upper frame 10 and the lower frame 20 are stacked along the height direction. Furthermore, the dimensions of the upper frame 10 and the lower frame 20 along the height direction are smaller than the dimensions of the upper frame 10 and the lower frame 20 along the height direction in the use state.

[0019] A boom section is a segment of the boom structure, and multiple boom sections can be connected in sequence to form a boom.

[0020] refer to Figure 1 , Figure 2 , Figure 6 , Figure 7As shown, the arm segment includes an upper frame 10, a lower frame 20, and a web structure 30 located in the middle.

[0021] refer to Figure 9 As shown, the upper frame 10 is roughly plate-shaped, meaning that the rods, beams, etc., that make up the upper frame 10 are roughly on the same plane. Similarly, refer to... Figure 10 As shown, the lower frame 20 is also roughly plate-shaped.

[0022] The upper frame 10 and the lower frame 20 can have the same or similar structure, and they can be used interchangeably.

[0023] The connections between the web structure 30 and the upper frame 10 and lower frame 20 are all detachable. For example, the web structure 30, upper frame 10, and lower frame 20 are each provided with lugs, which can be stacked and connected by pins. The web structure 30 is a structure composed of multiple members, and its function is similar to that of the web members in the boom.

[0024] In use, the web member structure 30 extends along the height direction, with its two ends connected to the upper frame 10 and the lower frame 20 respectively to form an arm segment structure. Multiple web member structures 30 can be arranged between the upper frame 10 and the lower frame 20, with the multiple web member structures 30 arranged side by side along the length direction of the arm segment.

[0025] Furthermore, during transport, the two ends of the web member structure 30 are disconnected from the upper frame 10 and the lower frame 20, respectively. The upper frame 10 and the lower frame 20 can still remain stacked, but the distance between them can be reduced to decrease the cross-sectional dimensions, especially the dimensions in the height direction. Of course, other structures can be installed between the upper frame 10 and the lower frame 20, which will be described in detail below.

[0026] In this design, the web structure is detachably connected to the upper and lower frames, allowing the web structure to be disassembled during transportation. This reduces the cross-sectional dimensions of the boom, thereby lowering transportation difficulty and costs.

[0027] Additionally, the arm segment includes a connecting arm 40, which, in use, can be connected at both ends to the side of the web structure 30 and the upper frame 10 / lower frame 20, respectively. Ear plates can be provided at both ends of the connecting arm 40.

[0028] In some embodiments, the transport state includes a first transport state, in which multiple web member structures 30 are sequentially connected and disposed between the upper frame 10 and the lower frame 20, with at least one side of the web member structure 30 connected to the upper frame 10 and at least another side of the web member structure 30 connected to the lower frame 20. (Reference) Figure 3As shown, the web members 30 are connected sequentially at their ends and are disposed between the upper frame 10 and the lower frame 20. At least one side of the web member 30 is connected to the upper frame 10, and at least one other side of the web member 30 is connected to the lower frame 20. In the first transport state, the web members 30 are connected to the upper frame 10 and the lower frame 20 via their sides, which reduces the height of the arm section and decreases the overall height. Furthermore, the connecting arm 40 can be housed within the web member 30, thus requiring virtually no additional space.

[0029] In some embodiments, the arm segment includes two web structures 30, wherein, in the first transport state, the side of one web structure 30 is connected to the upper frame 10, and the side of the other web structure 30 is connected to the lower frame 20. (Reference) Figure 3 As shown, the two web structures 30 are connected at their ends. The side of the left web structure 30 is connected to the upper frame 10, and the side of the right web structure 30 is connected to the lower frame 20, thus forming a sequentially connected structure that facilitates transportation.

[0030] The side of the web structure 30 can be provided with ear plates, which can be connected to the connecting arm 40 in the use state, and connected to the upper frame 10 or the lower frame 20 in the transport state.

[0031] Additionally, in some embodiments, the transport state includes a second transport state, in which the upper frame 10 and the lower frame 20 are stacked and directly connected. (See reference) Figure 4 As shown, the upper frame 10 is positioned above the lower frame 20, and the two are directly connected, which can further reduce the dimension in the height direction. The web structure 30 can be transported separately from the upper frame 10 and the lower frame 20, for example, Figure 5 In this case, the two web structures 30 are connected in sequence for transport together; or, the web structure 30 can be further disassembled and transported together with the upper frame 10 and the lower frame 20, as will be described in more detail below.

[0032] In some embodiments, the upper frame 10 includes two upper chords 11 spaced apart along the width direction of the arm segment, and the lower frame 20 includes two lower chords 21 spaced apart along the width direction of the arm segment. The two ends of the web structure 30 are respectively connected to the upper chords 11 and the lower chords 21. The upper frame 10 includes two upper chords 11 connected by a crossbeam, and the lower frame 20 includes two lower chords 21 connected by a crossbeam. The crossbeam can be a straight crossbeam perpendicular to the chords or a diagonal crossbeam not perpendicular to the chords. Both the two upper chords 11 and the two lower chords 21 extend along the length direction of the arm segment and form the main skeletal structure. The upper chords 11 and the lower chords 21 are connected by the web structure 30.

[0033] Specifically, in some embodiments, the web member structure 30 includes four web members 31, with each upper chord 11 connected to two web members 31, and each lower chord 21 connected to two web members 31. (See reference) Figure 12 The web member structure 30 includes four web members 31, which can be located at the four corners of the rectangle. Each upper chord 11 and lower chord 21 can be connected to two web members 31.

[0034] In some embodiments, the web member structure 30 includes two web member assemblies 33 spaced apart along the width direction of the arm segment. Each web member assembly 33 includes two web members 31, and the two ends of the web member assembly 33 are respectively connected to the same upper chord 11 and the same lower chord 21. The two web members 31 used to connect to the same upper chord 11 and the same lower chord 21 can be connected to each other (e.g., connected by a crossbeam) to form a web member assembly 33. Each web member structure 30 includes two web member assemblies 33, which are spaced apart along the width direction (in use).

[0035] In some embodiments, the two web member assemblies 33 of each web member structure 30 are separate and not connected. In the transport state, the two web member assemblies 33 are stacked on top of each other. That is, the two web member assemblies 33 of the web member structure 30 are separate structures. In the use state, the two web member assemblies 33 are spaced apart along the width direction and are respectively connected to different upper chords 11 and different lower chords 21. In the transport state, the two web member assemblies 33 can be stacked on top of each other and can be placed on the stacked upper frame 10. (Refer to...) Figure 8 As shown.

[0036] In some embodiments, the two web member assemblies 33 of each web member structure 30 are welded together by a crossbar 32. In this embodiment, the two web member assemblies 33 are welded together by the crossbar 32 to form a non-removable whole, that is, the web member structure 30 is a non-removable whole.

[0037] In summary, the web structure 30 can include two different forms: the web structure 30 is a non-detachable integral unit, and the web structure 30 includes two web assemblies 33 that are separate from each other.

[0038] In the first transport state, the web member structure 30 is an integral structure, with multiple web member structures 30 sequentially connected and positioned between the upper frame 10 and the lower frame 20, and the sides of the web member structures 30 connected to either the upper frame 10 or the lower frame 20. In the second transport state, if the web member structure 30 is a non-detachable integral structure, multiple web member structures 30 can be connected together and transported individually, with the upper frame 10 and lower frame 20 stacked and directly connected. A connecting arm 40 is positioned on the upper frame 10, and the upper frame 10, lower frame 20, and connecting arm 40 are transported together. (Refer to...) Figure 4 As shown, this can also be called the second transport state a; if the web structure 30 includes two separate web components 33, the upper frame 10 and the lower frame 20 are stacked and directly connected, and then the web components 33 are stacked on the upper frame 10, and the connecting arm 40 is placed on the web components 33. The overall height is also lower than the height in the use state. The upper frame 10, the lower frame 20, the web components 33 and the connecting arm 40 are transported together, which can also be called the second transport state b.

[0039] In addition, this solution provides a boom comprising multiple boom sections. These multiple boom sections can be detachably connected to form the boom.

[0040] In addition, this solution also provides a type of construction machinery, which includes the boom described above. The construction machinery can be a crane, an aerial work platform, etc.

[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A type of arm joint, characterized in that, The system includes a plate-shaped upper frame (10), a plate-shaped lower frame (20), and multiple web structures (30). The arm is configured to switch between a use state and a transport state. In the use state, the upper frame (10) and the lower frame (20) are spaced apart along the height direction, and the two ends of the web structure (30) are respectively connected to the upper frame (10) and the lower frame (20). In the transport state, the two ends of the web structure (30) are detached from the upper frame (10) and the lower frame (20), and the upper frame (10) and the lower frame (20) are stacked along the height direction. The dimensions of the upper frame (10) and the lower frame (20) along the height direction are smaller than the dimensions of the upper frame (10) and the lower frame (20) along the height direction in the use state.

2. The arm segment according to claim 1, characterized in that, The transport state includes a first transport state in which multiple web structures (30) are sequentially connected and disposed between the upper frame (10) and the lower frame (20), at least one side of the web structure (30) is connected to the upper frame (10), and at least one side of the web structure (30) is connected to the lower frame (20).

3. The arm segment according to claim 2, characterized in that, The arm segment includes two of the web structures (30), in the first transport state, the side of one of the web structures (30) is connected to the upper frame (10), and the side of the other web structure (30) is connected to the lower frame (20).

4. The arm segment according to claim 1, characterized in that, The transportation state includes a second transportation state, in which the upper frame (10) and the lower frame (20) are stacked and directly connected.

5. The arm segment according to claim 1, characterized in that, The upper frame (10) includes two upper chords (11) spaced apart along the width direction of the arm section, and the lower frame (20) includes two lower chords (21) spaced apart along the width direction of the arm section. The two ends of the web structure (30) are respectively connected to the upper chords (11) and the lower chords (21).

6. The arm segment according to claim 5, characterized in that, The web structure (30) includes four web members (31), each upper chord (11) is connected to two web members (31), and each lower chord (21) is connected to two web members (31).

7. The arm segment according to claim 6, characterized in that, The web structure (30) includes two web assemblies (33) spaced apart along the width direction of the arm segment. Each web assembly (33) includes two webs (31). The two ends of the web assembly (33) are respectively connected to the same upper chord (11) and the same lower chord (21).

8. The arm segment according to claim 7, characterized in that, The two web members (33) of each web structure (30) are separated from each other and not connected. In the transport state, the two web members (33) are stacked on top of each other; or, the two web members (33) of each web structure (30) are welded together by a crossbar (32).

9. A boom, characterized in that, It includes the arm segment as described in any one of claims 1-8.

10. An engineering machinery, characterized in that, Includes the boom as described in claim 9.

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