Telescopic boom with external drag chain and high-altitude operation equipment

Abstract

The utility model belongs to the technical field of high-altitude operation equipment, and particularly discloses a telescopic boom frame with an external drag chain and high-altitude operation equipment. The utility model discloses a telescopic boom with an external drag chain. The telescopic boom comprises a boom body, a drag chain box, a first-stage drag chain, a second-stage drag chain, a pipeline leading-in nozzle, a pipeline leading-out nozzle and a pipeline. The telescopic boom with the externally-arranged drag chain is applied to high-altitude operation equipment, and a pipeline is arranged outside the boom and specifically located in the drag chain box, so that the pipeline can be protected and prevented from being collided and damaged, and meanwhile, the production and assembly of the boom are facilitated, and the repair and maintenance of the pipeline are also facilitated; in addition, when the number of stages of the arm support is large, the arm support is long and a pipeline is long, the number of stages of the drag chain box can be increased along with the number of stages of the arm support, the influence on the boundary dimension of the arm support is small, and the compact design of the arm support is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of aerial work equipment and relates to a tow chain external telescopic arm frame and aerial work equipment. Background Art

[0002] Aerial work equipment, such as fire trucks or aerial work vehicles, has been widely used in social production and life. Among them, aerial work vehicles are special vehicles used to transport personnel and equipment for aerial work. Aerial work vehicles generally include a chassis, a boom and a work platform. The lower end of the boom is connected to the chassis, and the upper end of the boom is connected to the work platform. After the boom is unfolded and raised, the work platform is moved to the high-altitude work area. Aerial work vehicles need to lay pipelines from the chassis to the work platform, such as laying hydraulic pipelines to realize hydraulic transmission, and laying signal cables to realize signal transmission. The pipelines of current aerial work vehicles are generally arranged inside the boom to protect the pipelines and prevent them from being damaged by bumps. However, arranging the pipelines inside the boom makes the assembly operation more difficult, which affects the production and assembly efficiency of the boom of the aerial work vehicle; moreover, when the internal pipelines need to be inspected, the entire boom needs to be disassembled, and the maintenance operation is cumbersome. For this reason, some aerial work vehicles arrange the pipelines outside the boom and arrange reels on the boom, and wind the pipelines around the reels. When there are many boom stages and the boom is long, the corresponding pipelines are also long, which requires the outer dimensions of the reel to be large, resulting in the boom occupying a large space, which is not conducive to the compact design of the boom, and the safety is also low. The exposed pipelines also have the risk of being damaged by bumps. Utility Model Content

[0003] The purpose of the utility model is to provide a tow chain external telescopic boom and aerial work equipment, which provides a new arrangement method for arranging pipelines outside the boom.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A tow chain external telescopic arm frame, comprising:

[0006] The boom is arranged in at least three levels, and adjacent booms can be extended and retracted relative to each other;

[0007] The drag chain boxes are arranged in at least three levels, and adjacent drag chain boxes can be relatively extended and retracted;

[0008] The first-level drag chain box is assembled and connected to the first-level boom, the second-level drag chain box is assembled and connected to the second-level boom, and the third-level drag chain box is assembled and connected to the third-level boom;

[0009] The first-stage drag chain is arranged at the bottom of the first-stage drag chain box and arranged along the extension direction of the first-stage drag chain box, and the lower end of the first-stage drag chain is connected to the lower end of the second-stage drag chain box;

[0010] The second-stage drag chain is arranged at the bottom of the second-stage drag chain box and arranged along the extension direction of the second-stage drag chain box, and the lower end of the second-stage drag chain is connected to the lower end of the third-stage drag chain box;

[0011] The pipeline introduction nozzle is arranged on the first-level drag chain box;

[0012] The pipeline outlet is arranged on the last level of the drag chain box;

[0013] Pipeline, one end of the pipeline first passes through the pipeline introduction nozzle, then passes through at least three levels of drag chain boxes and the first level drag chain and the second level drag chain, and finally leads out from the pipeline outlet nozzle.

[0014] Preferably, the pipelines inside the first-stage drag chain box are first arranged from bottom to top along the bottom of the first-stage drag chain box, and then turned back and arranged along the extension direction of the first-stage drag chain.

[0015] Preferably, the pipelines inside the second-stage drag chain box are first arranged from bottom to top along the bottom of the second-stage drag chain box, and then turned back and arranged along the extension direction of the second-stage drag chain.

[0016] Preferably, the interior of the first-stage drag chain box is sequentially arranged from bottom to top as a first wide chamber and a first narrow chamber;

[0017] The inner diameter of the first wide chamber is larger than the inner diameter of the first narrow chamber, and the bottom of the first narrow chamber is located at a height higher than the bottom of the first wide chamber;

[0018] The first-stage drag chain is located inside the first wide chamber;

[0019] The lower end of the second-stage drag chain box fits into the first narrow chamber.

[0020] Preferably, the interior of the second-stage drag chain box is sequentially arranged from bottom to top as a second wide chamber and a second narrow chamber;

[0021] The inner diameter of the second wide chamber is larger than the inner diameter of the second narrow chamber, and the bottom of the second narrow chamber is located at a height higher than the bottom of the second wide chamber;

[0022] The second-stage drag chain is located inside the second wide chamber;

[0023] The lower end of the third-stage drag chain box is fitted with the second narrow chamber.

[0024] Preferably, the upper end of the second-stage drag chain box is assembled and connected to the upper end of the second-stage arm; the upper end of the third-stage drag chain box is assembled and connected to the upper end of the third-stage arm.

[0025] Preferably, the upper end of the first-stage drag chain box is assembled and connected to the upper end of the first-stage arm, and the lower end of the first-stage drag chain box is assembled and connected to the lower end of the first-stage arm.

[0026] Preferably, wear-resistant sliders are provided between the first-stage drag chain box and the second-stage drag chain box, and between the second-stage drag chain box and the third-stage drag chain box.

[0027] Preferably, the wear-resistant slider is made of nylon material.

[0028] A high-altitude working equipment, wherein the boom of the high-altitude working equipment is configured as the above-mentioned drag chain external telescopic boom.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] As described above, the utility model describes a telescopic arm with an external drag chain, which is applied to aerial work equipment. The pipelines are arranged outside the arm, specifically inside the drag chain box, which can protect the pipelines and prevent them from being damaged by bumps. At the same time, it is convenient for the production and assembly of the arm, and also for the inspection and maintenance of the pipelines. In addition, when there are many arm stages, the arm is long, and the pipeline is also long, the number of drag chain boxes can be increased with the number of arm stages, which has little effect on the external dimensions of the arm and is conducive to the compact design of the arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0032] Figure 1 This is a three-dimensional diagram of the external telescopic arm of the drag chain according to the embodiment of the present utility model;

[0033] Figure 2 This is a front view of the external telescopic arm bracket with a drag chain according to an embodiment of the present utility model;

[0034] Figure 3 This is a top view of the external telescopic arm of the drag chain according to an embodiment of the utility model;

[0035] Figure 4 This is a three-dimensional diagram of the tow chain box in the retracted state according to an embodiment of the utility model;

[0036] Figure 5 This is a front view of the tow chain box in the retracted state according to the embodiment of the utility model;

[0037] Figure 6 This is a top view of the tow chain box in the retracted state according to an embodiment of the utility model;

[0038] Figure 7 for Figure 6 Middle AA section view;

[0039] Figure 8This is a left side view of the tow chain box in the retracted state according to the embodiment of the utility model;

[0040] Figure 9 This is a right side view of the tow chain box in the retracted state according to the embodiment of the utility model;

[0041] Figure 10 This is a three-dimensional diagram of the tow chain box in the extended state according to an embodiment of the utility model;

[0042] Figure 11 This is a front view of the tow chain box in the extended state according to the embodiment of the utility model;

[0043] Figure 12 This is a top view of the tow chain box in the extended state according to an embodiment of the utility model;

[0044] Figure 13 for Figure 12 Middle BB cross-section;

[0045] Figure 14 This is the main view of the first-stage drag chain box of the utility model;

[0046] Figure 15 This is a top view of the first-stage drag chain box of the utility model;

[0047] Figure 16 for Figure 15 Middle CC section view;

[0048] Figure 17 This is the front view of the second-stage drag chain box of the utility model;

[0049] Figure 18 This is a top view of the second-stage drag chain box of the utility model;

[0050] Figure 19 for Figure 18 Middle DD section view;

[0051] Figure 20 This is the front view of the third-level drag chain box of the utility model;

[0052] Figure 21 This is a top view of the third-level drag chain box of the utility model;

[0053] Figure 22 for Figure 21 Middle EE cross-sectional view. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0055] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0056] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0058] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0059] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0060] Example:

[0061] like Figures 1 to 22 As shown, the telescopic arm with an external drag chain in this embodiment includes an arm, a drag chain box, a first-stage drag chain 31, a second-stage drag chain 32, a pipeline introduction nozzle 41, a pipeline outlet nozzle 42 and a pipeline 5, etc.

[0062] The boom is set to at least three levels. This embodiment takes a three-level boom as an example, specifically a first-level boom 11, a second-level boom 12 and a third-level boom 13. The booms at each level are nested in sequence, and adjacent booms can extend and retract relative to each other under the drive of the boom telescopic drive mechanism.

[0063] The drag chain box is set to at least three levels. This embodiment takes the drag chain box as an example, specifically the first-level drag chain box 21, the second-level drag chain box 22 and the third-level drag chain box 23. The drag chain boxes at each level are nested in sequence, and adjacent drag chain boxes can expand and contract relative to each other.

[0064] The first-stage drag chain box 21 is assembled and connected to the first-stage boom 11, the second-stage drag chain box 22 is assembled and connected to the second-stage boom 12, and the third-stage drag chain box 23 is assembled and connected to the third-stage boom 13. Specifically, the upper end of the first-stage drag chain box 21 is assembled and connected to the upper end of the first-stage boom 11 via the assembly seat 24, and the lower end of the first-stage drag chain box 21 is assembled and connected to the lower end of the first-stage boom 11 via the assembly seat 24; the upper end of the second-stage drag chain box 22 is assembled and connected to the upper end of the second-stage boom 12 via the assembly seat 24; and the upper end of the third-stage drag chain box 23 is assembled and connected to the upper end of the third-stage boom 13 via the assembly seat 24.

[0065] Adjacent booms are driven by the boom telescopic drive mechanism to extend and contract relative to each other, thereby driving adjacent drag chain boxes to extend and contract relative to each other.

[0066] The first-stage drag chain 31 is arranged at the bottom of the first-stage drag chain box 21 and along the extension direction of the first-stage drag chain box 21 . The lower end of the first-stage drag chain 31 is connected to the lower end of the second-stage drag chain box 22 .

[0067] The second-stage drag chain 32 is arranged at the bottom of the second-stage drag chain box 22 and along the extension direction of the second-stage drag chain box 22 . The lower end of the second-stage drag chain 32 is connected to the lower end of the third-stage drag chain box 23 .

[0068] The pipeline introduction nozzle 41 is arranged at the lower end surface of the first-level drag chain box 21, and the pipeline introduction nozzle 41 is connected to the interior of the first-level drag chain box 21; the pipeline lead-out nozzle 42 is arranged at the upper end surface of the last-level drag chain box (the third-level drag chain box 23 in this embodiment), and the pipeline lead-out nozzle 42 is connected to the interior of the third-level drag chain box 23.

[0069] One end of the pipeline 5 first passes through the pipeline introduction nozzle 41 , then passes through the interior of at least three-stage drag chain boxes and the first-stage drag chain 31 and the second-stage drag chain 32 , and finally is led out from the pipeline lead-out nozzle 42 .

[0070] Specifically, the pipelines 5 located inside the first-stage drag chain box 21 are first arranged from bottom to top along the bottom of the first-stage drag chain box 21, and then turn back and are arranged along the extension direction of the first-stage drag chain 31. The pipelines 5 located inside the second-stage drag chain box 22 are first arranged from bottom to top along the bottom of the second-stage drag chain box 22, and then turn back and are arranged along the extension direction of the second-stage drag chain 32.

[0071] During the relative expansion and contraction of adjacent drag chain boxes, the first-stage drag chain 31 moves with the second-stage drag chain box 22, gradually detaching from the bottom of the first-stage drag chain box 21 from the bottom to the top, or gradually flattening on the bottom of the first-stage drag chain box 21 from the top to the bottom. The second-stage drag chain 32 moves with the third-stage drag chain box 23, gradually detaching from the bottom of the second-stage drag chain box 22 from the bottom to the top, or gradually flattening on the bottom of the second-stage drag chain box 22 from the top to the bottom. In this process, the pipeline 5 can be well protected.

[0072] The interior of the first-stage drag chain box 21 is arranged, from bottom to top, into a first wide chamber 211 and a first narrow chamber 212. The inner diameter of the first wide chamber 211 is larger than that of the first narrow chamber 212, and the bottom of the first narrow chamber 212 is located at a higher height than the bottom of the first wide chamber 211. The first-stage drag chain 31 is located within the first wide chamber 211. The lower end of the second-stage drag chain box 22 engages with the first narrow chamber 212. This arrangement allows the first-stage drag chain 31 to be arranged in a relatively independent space, effectively protecting the first-stage drag chain 31, its interior, and the nearby pipelines 5. Furthermore, by engaging the first narrow chamber 212 at the lower end of the second-stage drag chain box 22, the first narrow chamber 212 can guide and limit the second-stage drag chain box 22, ensuring coaxiality between the second-stage drag chain box 22 and the first-stage drag chain box 21 during its extension and contraction.

[0073] The interior of the second-stage drag chain box 22 is arranged, from bottom to top, into a second wide chamber 221 and a second narrow chamber 222. The inner diameter of the second wide chamber 221 is larger than that of the second narrow chamber 222, and the bottom of the second narrow chamber 221 is located at a higher height than the bottom of the second wide chamber 222. The second-stage drag chain 32 is located within the second wide chamber 221. The lower end of the third-stage drag chain box 23 engages with the second narrow chamber 222. This arrangement allows the second-stage drag chain 32 to be arranged in a relatively independent space, effectively protecting the second-stage drag chain 32, its interior, and the surrounding pipelines 5. Furthermore, by engaging the lower end of the third-stage drag chain box 23 with the second narrow chamber 222, the second narrow chamber 222 can guide and limit the third-stage drag chain box 23, ensuring coaxiality between the third-stage drag chain box 23 and the second-stage drag chain box 22 during their extension and contraction.

[0074] Wear-resistant sliders 25 are installed between the first-stage and second-stage drag chain boxes 21 and 22, and between the second-stage and third-stage drag chain boxes 22 and 23. Specifically, the wear-resistant sliders 25 are arranged on the inner wall of the first narrow chamber 212 of the first-stage and second narrow chamber 222 of the second-stage and third-stage drag chain boxes 23. The wear-resistant sliders 25 are made of nylon. During the relative expansion and contraction of adjacent drag chain boxes, the wear-resistant sliders 25 reduce wear on the boxes.

[0075] A high-altitude work equipment is disclosed. The high-altitude work equipment may be a fire truck or an aerial work vehicle. The boom of the high-altitude work equipment is configured as the drag chain external telescopic boom described above in this embodiment.

[0076] So far, this embodiment has been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the telescopic boom with external drag chains of the present invention. The telescopic boom with external drag chains described in the present invention is applied to aerial work equipment, and the pipeline 5 is arranged outside the boom, specifically inside the drag chain box, which can protect the pipeline 5 and prevent the pipeline 5 from being damaged by collision. At the same time, it is convenient for the production and assembly of the boom, and also for the inspection and maintenance of the pipeline 5. In addition, when the number of boom stages is large, the boom is long, and the pipeline 5 is also long, the number of drag chain boxes can be increased along with the number of boom stages, which has little effect on the external dimensions of the boom and is conducive to the compact design of the boom.

[0077] Of course, the above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention and should be protected by the present invention.

Claims

1. A tow chain external telescopic arm, characterized in that: include: The boom is arranged in at least three levels, and adjacent booms can be extended and retracted relative to each other; The drag chain boxes are arranged in at least three levels, and adjacent drag chain boxes can be relatively extended and retracted; The first-level drag chain box is assembled and connected to the first-level boom, the second-level drag chain box is assembled and connected to the second-level boom, and the third-level drag chain box is assembled and connected to the third-level boom; The first-stage drag chain is arranged at the bottom of the first-stage drag chain box and arranged along the extension direction of the first-stage drag chain box, and the lower end of the first-stage drag chain is connected to the lower end of the second-stage drag chain box; The second-stage drag chain is arranged at the bottom of the second-stage drag chain box and arranged along the extension direction of the second-stage drag chain box, and the lower end of the second-stage drag chain is connected to the lower end of the third-stage drag chain box; The pipeline introduction nozzle is arranged on the first-level drag chain box; The pipeline outlet is arranged on the last level of the drag chain box; Pipeline, one end of the pipeline first passes through the pipeline introduction nozzle, then passes through at least three levels of drag chain boxes and the first level drag chain and the second level drag chain, and finally leads out from the pipeline outlet nozzle.

2. The drag chain external telescopic arm according to claim 1, characterized in that: The pipelines inside the first-stage drag chain box are first arranged from bottom to top along the bottom of the first-stage drag chain box, and then turned back and arranged along the extension direction of the first-stage drag chain.

3. The drag chain external telescopic arm according to claim 1 or 2, characterized in that: The pipelines inside the second-stage drag chain box are first arranged from bottom to top along the bottom of the second-stage drag chain box, and then turned back and arranged along the extension direction of the second-stage drag chain.

4. The drag chain external telescopic arm according to claim 1, characterized in that: The interior of the first-stage drag chain box is sequentially arranged from bottom to top as a first wide chamber and a first narrow chamber; The inner diameter of the first wide chamber is larger than the inner diameter of the first narrow chamber, and the bottom of the first narrow chamber is located at a height higher than the bottom of the first wide chamber; The first-stage drag chain is located inside the first wide chamber; The lower end of the second-stage drag chain box fits into the first narrow chamber.

5. The drag chain external telescopic arm according to claim 1 or 4, characterized in that: The interior of the second-stage drag chain box is arranged as the second widest chamber and the second narrowest chamber from bottom to top; The inner diameter of the second wide chamber is larger than the inner diameter of the second narrow chamber, and the bottom of the second narrow chamber is located at a height higher than the bottom of the second wide chamber; The second-stage drag chain is located inside the second wide chamber; The lower end of the third-stage drag chain box is fitted with the second narrow chamber.

6. The drag chain external telescopic arm according to claim 1, characterized in that: The upper end of the second-stage drag chain box is assembled and connected to the upper end of the second-stage arm; the upper end of the third-stage drag chain box is assembled and connected to the upper end of the third-stage arm.

7. The drag chain external telescopic arm according to claim 6, characterized in that: The upper end of the first-stage drag chain box is assembled and connected to the upper end of the first-stage arm frame, and the lower end of the first-stage drag chain box is assembled and connected to the lower end of the first-stage arm frame.

8. The drag chain external telescopic arm according to claim 1, characterized in that: Wear-resistant sliders are provided between the first-level drag chain box and the second-level drag chain box, and between the second-level drag chain box and the third-level drag chain box.

9. The drag chain external telescopic arm according to claim 8, characterized in that: The wear-resistant sliding block is made of nylon material.

10. A high-altitude working equipment, characterized by: The boom of the aerial work equipment is configured as a tow chain external telescopic boom as described in any one of claims 1 to 9.

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