Double-cylinder telescopic boom for aerial work vehicle and aerial work vehicle

Abstract

The present invention belongs to the technical field of aerial work platforms, and specifically discloses a double-cylinder telescopic boom for an aerial work platform and an aerial work platform. For the double-cylinder telescopic boom for an aerial work platform of the present invention, when it is applied to an aerial work platform, the first-stage cylinder and the second-stage cylinder can be independently controlled to drive the synchronous extension and retraction of the first few stages of the boom and the last few stages of the boom. For a boom with a large number of stages, the extension and retraction efficiency is relatively high; a first extension chain and a first retraction chain are arranged on the booms with a larger cross-sectional area in the first few stages, while for the subsequent booms with a smaller cross-sectional area in each stage, only the second chain for extension transmission between adjacent booms is retained, and the chain for retraction transmission between adjacent booms of the aerial work platform is omitted. In this way, the arrangement of the chains between adjacent booms is simplified, the cross-sectional area of the boom is reduced, the compact design of the boom is realized, and it is also convenient for the assembly of the boom, improving the assembly efficiency of the boom.

Description

Technical Field

[0001] The present invention belongs to the technical field of aerial work vehicles, and relates to a double-cylinder telescopic boom for an aerial work vehicle and an aerial work vehicle. Background Art

[0002] An aerial work vehicle is a special vehicle used to transport workers and equipment for aerial work. Currently, the commonly used aerial work vehicles mainly have two forms: folding boom type and straight boom type. The straight boom type aerial work vehicle is more and more recognized by users due to its high operation flexibility and has a good application prospect. The straight boom type aerial work vehicle generally includes a vehicle chassis, a boom, and a working platform. A turntable is provided on the vehicle chassis. The lower end of the boom is connected to the turntable, and the upper end of the boom is provided with a working platform. After the boom extends and rises, the working platform is moved to the high-altitude area to be worked. After the boom retracts and descends, the working platform is reset. Currently, the boom of the straight boom type aerial work vehicle is generally a nested structure. In order to increase the extension length of the boom, multiple levels of booms need to be nested. As the number of boom levels increases, the extension and retraction efficiency of the multi-level boom is relatively low. In addition, the boom of the aerial work vehicle is generally driven by an oil cylinder to drive a chain for extension and retraction. Among them, chains for extending transmission and chains for retracting transmission are connected between adjacent booms. In this way, the number of boom levels itself is large, resulting in a large cross-sectional area of the boom. The chains occupy a large amount of space inside the boom, making the cross-sectional area of the boom even larger, which is not conducive to the compact design of the boom. Moreover, the number of chain joints is large, and the assembly efficiency is low when assembling the chains on the boom. Summary of the Invention

[0003] The purpose of the present invention is to provide a double-cylinder telescopic boom for an aerial work vehicle and an aerial work vehicle, so as to improve the extension and retraction efficiency of the boom by driving the boom to extend and retract with two-stage oil cylinders, and simplify the arrangement of the chains between adjacent booms.

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

[0005] A double-cylinder telescopic boom for an aerial work vehicle includes multiple levels of booms nested in sequence from outside to inside, and also includes a first-stage oil cylinder, a second-stage oil cylinder, an oil cylinder bracket, a first pulley, a transmission rope, a rope guide member, a first extension chain, a first retraction chain, and a second chain;

[0006] The cylinder body of the first-stage oil cylinder is assembled and connected to the lower end of the first-stage boom, and the end of the telescopic rod of the first-stage oil cylinder is assembled and connected to the upper end of the second-stage boom;

[0007] Any boom after the second-stage boom is defined as boom A, the next-level boom of boom A is defined as boom B, and the last-level boom is defined as boom C;

[0008] The end of the telescopic rod of the secondary oil cylinder is assembled and connected to the lower end of the oil cylinder bracket. The cylinder body of the secondary oil cylinder is movably fitted with the oil cylinder bracket. The telescopic rod of the secondary oil cylinder extends and retracts relative to the cylinder body to drive the cylinder body of the secondary oil cylinder to make a linear reciprocating movement relative to the oil cylinder bracket.

[0009] The end of the telescopic rod of the secondary oil cylinder and / or the oil cylinder bracket is connected to boom A, the cylinder body of the secondary oil cylinder is connected to boom B, and the wire guiding member is arranged on boom C.

[0010] Both the left side and the right side of the end of the cylinder body of the secondary oil cylinder close to the telescopic rod are rotatably connected to the first pulley.

[0011] One end of the transmission rope is connected to the oil cylinder bracket. The transmission rope first bypasses the left first pulley, then bypasses the wire guiding member, bypasses the right first pulley, and the other end of the transmission rope is connected to the oil cylinder bracket.

[0012] Among the booms between the first-stage boom and boom A, any one boom is defined as boom D, the next-level boom of boom D is defined as boom E, and the second-level boom below boom D is defined as boom F.

[0013] The upper end of boom E is provided with a first extending sprocket. One end of the first extending chain is connected to the upper end of boom D, and the other end of the first extending chain bypasses the first extending sprocket and is then connected to the lower end of boom F.

[0014] The lower end of boom E is provided with a first retracting sprocket. One end of the first retracting chain is connected to the upper end of boom D, and the other end of the first retracting chain bypasses the first retracting sprocket and is then connected to the lower end of boom F.

[0015] Among the booms after boom A, any one boom is defined as boom G, the next-level boom of boom G is defined as boom H, and the second-level boom below boom G is defined as boom I.

[0016] The upper end of boom H is provided with a second extending sprocket. One end of the second chain is connected to the upper end of boom G, and the other end of the second chain bypasses the second extending sprocket and is then connected to the lower end of boom I.

[0017] Preferably, it further includes at least one second pulley group, and the second pulley group includes a pair of second front pulleys and second rear pulleys arranged in pairs.

[0018] Both the left side and the right side of the oil cylinder bracket are rotatably connected to the second front pulley, and both the left side and the right side of the end of the cylinder body of the secondary oil cylinder close to the telescopic rod are rotatably connected to the second rear pulley.

[0019] Between the left first pulley and the wire guiding member, the transmission rope sequentially bypasses the left second front pulley and the left second rear pulley.

[0020] Between the rope guide and the first pulley on the right side, the transmission rope successively bypasses the second rear pulley on the right side and the second front pulley on the right side.

[0021] Preferably, a guide frame is provided at one end of the cylinder block of the secondary oil cylinder away from the telescopic rod. A guide wheel is rotatably connected to the guide frame, and the guide wheel is in rolling contact with the inner wall of the multi-stage boom.

[0022] Preferably, a guide wheel is arranged at both the upper and lower ends of the guide frame.

[0023] Preferably, first guide blocks are provided at both the left and right ends of the guide frame.

[0024] Preferably, the primary oil cylinder is located outside the first-stage boom, and the secondary oil cylinder and the oil cylinder bracket are located inside the boom.

[0025] Preferably, the boom is provided with seven levels. Boom A is the third-stage boom, and boom C is the seventh-stage boom.

[0026] Preferably, a plurality of second guide blocks are provided at the upper end of the oil cylinder bracket.

[0027] Preferably, the rope guide is provided as a semi-circular wheel, and the transmission rope contacts the arc edge of the semi-circular wheel.

[0028] An aerial work platform is provided with the double-oil-cylinder telescopic boom for aerial work platforms described above.

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

[0030] As described above, the present invention relates to a double-oil-cylinder telescopic boom for an aerial work platform. When applied to an aerial work platform, the primary oil cylinder and the secondary oil cylinder can be independently controlled to drive the synchronous extension and retraction of the front several stages of the boom and the rear several stages of the boom. For a boom with a large number of stages, the extension and retraction efficiency is relatively high; the first extension chain and the first retraction chain are arranged on the front several stages of the boom with a larger cross-sectional area, while for the subsequent stages of the boom with a smaller cross-sectional area, only the second chain for extension transmission between adjacent booms is retained, and the chain for retraction transmission between adjacent booms of the aerial work platform is omitted; when the boom retracts, the double-oil-cylinder telescopic boom for an aerial work platform of the present invention drives the last-stage boom (boom C) to retract downward, and cooperates with the original second chain for extension transmission to successively drive each front-stage boom to retract. In this way, the arrangement of the chains between adjacent booms can be simplified, the cross-sectional area of the boom can be reduced, the compact design of the boom can be realized, and it is also convenient for the assembly of the boom, improving the assembly efficiency of the boom. Description of the Drawings

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0032] Figure 1 The front view of the double-cylinder telescopic boom of the aerial work vehicle in the retracted state according to the embodiment of the present invention;

[0033] Figure 2 The top view of the double-cylinder telescopic boom of the aerial work vehicle in the retracted state according to the embodiment of the present invention;

[0034] Figure 3 is Figure 2 the A-A cross-sectional view in

[0035] Figure 4 The top view of the double-cylinder telescopic boom of the aerial work vehicle in the extended state according to the embodiment of the present invention;

[0036] Figure 5 is Figure 4 the B-B cross-sectional view in

[0037] Figure 6 The front view of the double-cylinder telescopic boom of the aerial work vehicle in the extended state according to the embodiment of the present invention;

[0038] Figure 7 is Figure 6 the C-C cross-sectional view in

[0039] Figure 8 The three-dimensional view of components such as the secondary cylinder, cylinder bracket and transmission rope according to the embodiment of the present invention;

[0040] Figure 9 The front view of components such as the secondary cylinder, cylinder bracket and transmission rope according to the embodiment of the present invention;

[0041] Figure 10 The top view of components such as the secondary cylinder, cylinder bracket and transmission rope according to the embodiment of the present invention;

[0042] Figure 11 The front view of the secondary cylinder in the embodiment of the present invention;

[0043] Figure 12 The top view of the secondary cylinder in the embodiment of the present invention;

[0044] Figure 13 The front view of the cylinder bracket in the embodiment of the present invention;

[0045] Figure 14 The top view of the cylinder bracket in the embodiment of the present invention. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0047] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0049] In addition, the descriptions such as "first" and "second" in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] 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 ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0052] Embodiment:

[0053] As Figures 1 to 14As shown in the figure, in this embodiment, the telescopic boom of the aerial work vehicle with double cylinders includes a multi-stage boom (the first-stage boom 11, the second-stage boom 12, the third-stage boom 13, the fourth-stage boom 14, the fifth-stage boom 15, the sixth-stage boom 16 and the seventh-stage boom 17) arranged in nested order from outside to inside, and also includes a first-stage cylinder 21, a second-stage cylinder 22, a cylinder bracket 23, a first pulley 31, a transmission rope 4, a guide rope member 41, a first extension chain 51, a first retraction chain 52 and a second chain 6.

[0054] The cylinder body of the first-stage cylinder 21 is assembled and connected to the lower end of the first-stage boom 11, and the end of the telescopic rod of the first-stage cylinder 21 is assembled and connected to the upper end of the second-stage boom 12. The telescopic rod of the first-stage cylinder 21 extends or retracts relative to the cylinder body to drive the second-stage boom 12 to extend or retract relative to the first-stage boom 11.

[0055] Any stage of the boom after the second-stage boom 12 is defined as boom A. In this embodiment, the third-stage boom 13 is defined as boom A. The next stage of boom A is defined as boom B (the fourth-stage boom 14), and the last-stage boom is defined as boom C (the seventh-stage boom 17).

[0056] The first-stage cylinder 21 is located outside the first-stage boom 11, and the second-stage cylinder 22 and the cylinder bracket 23 are located inside the boom.

[0057] The end of the telescopic rod of the second-stage cylinder 22 is fixed or hinged to the lower end of the cylinder bracket 23 by bolts. The second-stage cylinder 22 is located inside the cylinder bracket 23, and the cylinder body of the second-stage cylinder 22 is slidably fitted with the cylinder bracket 2. The telescopic rod of the second-stage cylinder 22 extends or retracts relative to the cylinder body to drive the cylinder body of the second-stage cylinder 22 to make a linear reciprocating movement relative to the cylinder bracket 23.

[0058] The end of the telescopic rod of the second-stage cylinder 22 is connected to boom A, the cylinder body of the second-stage cylinder 22 is connected to boom B, and the guide rope member 41 is arranged on boom C.

[0059] Both the left side and the right side of the end of the cylinder body of the second-stage cylinder 22 close to the telescopic rod are rotatably connected to the first pulley 31.

[0060] One end of the transmission rope 4 is connected to the upper end of the cylinder bracket 23 through a fixed pin 71. The transmission rope 4 first bypasses the first pulley 31 on the left side, then bypasses the guide rope member 41, then bypasses the first pulley 31 on the right side, and the other end of the transmission rope 4 is connected to the upper end of the cylinder bracket 23 through a fixed pin 71.

[0061] On this basis, it also includes at least one second pulley group. Among them, for each additional second pulley group, one more stage of boom is added.

[0062] The second pulley set includes a pair of second front pulleys 321 and second rear pulleys 322 arranged in pairs. The left and right sides of the oil cylinder bracket 23 are rotatably connected to the second front pulleys 321 via wheel seats 72, and the left and right sides of the cylinder body of the secondary oil cylinder 22 near one end of the telescopic rod are rotatably connected to the second rear pulleys 322 via wheel seats 72.

[0063] Between the first pulley 31 on the left side and the wire guiding member 41, the transmission rope 4 successively bypasses the second front pulley 321 on the left side and the second rear pulley 322 on the left side; between the wire guiding member 41 and the first pulley 31 on the right side, the transmission rope 41 successively bypasses the second rear pulley 322 on the right side and the second front pulley 321 on the right side.

[0064] A guiding frame 81 is provided at one end of the cylinder body of the secondary oil cylinder 22 far from the telescopic rod. A guiding wheel 82 is rotatably connected to the guiding frame 81, and the guiding wheel 82 is in rolling contact with the inner wall of the multi-stage boom. During the relative telescopic process of the boom, by the guiding wheel 82 being in rolling contact with the inner wall of the multi-stage boom, the guiding of the secondary oil cylinder 22 moving along the inner wall of the boom is realized. Among them, a guiding wheel 82 is arranged at both the upper and lower ends of the guiding frame 81 so that the guiding wheel 82 is in rolling contact with the upper and lower inner walls of the multi-stage boom. First guiding blocks 83 are provided at both the left and right ends of the guiding frame 81, and the first guiding blocks 83 are in contact with the left and right inner walls of the multi-stage boom. The first guiding blocks 83 are made of nylon material, and the first guiding blocks 83 are consumable parts to reduce the wear on the inner wall of the boom.

[0065] Several second guiding blocks 84 are provided at the four peripheral edges of the upper end of the oil cylinder bracket 23, and the second guiding blocks 84 are in contact with the left and right inner walls of the multi-stage boom to realize the guiding of the oil cylinder bracket 23 moving along the inner wall of the boom. Among them, the second guiding blocks 84 are made of nylon material, and the second guiding blocks 84 are consumable parts to reduce the wear on the inner wall of the boom.

[0066] The wire guiding member 41 is arranged as a semi-circular wheel, and the transmission rope 4 is in contact with the arc edge of the semi-circular wheel. Among them, the arc edge of the semi-circular wheel is arranged as a groove structure, and the transmission rope 4 is located in the groove.

[0067] Among the various booms between the first-stage boom 11 and the boom A (the third-stage boom 13), any one of the booms is defined as boom D, the next-stage boom of boom D is defined as boom E, and the next-second-stage boom of boom D is defined as boom F.

[0068] A first extending sprocket 91 is provided at the upper end of boom E. One end of the first extending chain 51 is connected to the upper end of boom D, and the other end of the first extending chain 51 bypasses the first extending sprocket 91 and then is connected to the lower end of boom F; a first retracting sprocket 92 is provided at the lower end of boom E. One end of the first retracting chain 52 is connected to the upper end of boom D, and the other end of the first retracting chain 52 bypasses the first retracting sprocket 92 and then is connected to the lower end of boom F.

[0069] The telescopic rod of the first-stage oil cylinder 21 extends or retracts relative to the cylinder block to drive the second-stage boom 12 to extend or retract relative to the first-stage boom 11. When the second-stage boom 12 extends relative to the first-stage boom 11, the third-stage boom 13 is driven to extend relative to the second-stage boom 12 by the first extension chain 51. When the second-stage boom 12 retracts relative to the first-stage boom 11, the third-stage boom 13 is driven to retract relative to the second-stage boom 12 by the first retraction chain 52.

[0070] Among the booms after boom A, any one of the booms is defined as boom G, the next-level boom of boom G is defined as boom H, and the second-next-level boom of boom G is defined as boom I.

[0071] The upper end of boom H is provided with a second extension sprocket 93. One end of the second chain 6 is connected to the upper end of boom G, and the other end of the second chain 6 is connected to the lower end of boom I after passing around the second extension sprocket 93.

[0072] The telescopic rod of the second-stage oil cylinder 22 extends or retracts relative to the cylinder block to drive the cylinder block of the second-stage oil cylinder 22 to make a linear reciprocating movement relative to the oil cylinder bracket 23. At the same time, the telescopic rod of the second-stage oil cylinder 22 extends or retracts relative to the cylinder block to drive the fourth-stage boom 14 to extend or retract relative to the third-stage boom 13. When the fourth-stage boom 14 extends relative to the third-stage boom 13, the fifth-stage boom 15 is driven to extend relative to the fourth-stage boom 14, the sixth-stage boom 16 is driven to extend relative to the fifth-stage boom 15, and the seventh-stage boom 17 is driven to extend relative to the sixth-stage boom 16 by the respective second extension sprockets 93. When the telescopic rod of the second-stage oil cylinder 22 retracts relative to the cylinder block, the seventh-stage boom 17 (boom C) is driven to retract downward, and the original second chain 6 used for extension drive can drive each of the previous-stage booms to retract in sequence.

[0073] An aerial work platform is provided with the double-oil-cylinder telescopic boom for the aerial work platform described above in this embodiment.

[0074] 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 double-cylinder telescopic boom for an aerial work vehicle of the present invention. For the double-cylinder telescopic boom for an aerial work vehicle of the present invention, when it is applied to an aerial work vehicle, the first-stage cylinder 21 and the second-stage cylinder 22 can be independently controlled to drive the synchronous extension and retraction of the first few stages of the boom and the last few stages of the boom. For a boom with a large number of stages, the extension and retraction efficiency is relatively high; the first extension chain 51 and the first retraction chain 52 are arranged on the booms with a larger cross-sectional area in the first few stages, while for the subsequent stages of booms with a smaller cross-sectional area, only the second chain 6 for extension transmission between adjacent booms is retained, and the chain for retraction transmission between adjacent booms of the aerial work vehicle is omitted; when the boom retracts, the double-cylinder telescopic boom for an aerial work vehicle of the present invention drives the last-stage boom (boom C) to retract downward, and cooperates with the original second chain 6 for extension transmission to drive each previous-stage boom to retract in sequence. In this way, the arrangement of the chains between adjacent booms can be simplified, the cross-sectional area of the boom can be reduced, the compact design of the boom can be realized, and it is also convenient for the assembly of the boom, improving the assembly efficiency of the boom.

[0075] Certainly, the above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention and should be protected by the present invention.

Claims

1. A double-cylinder telescopic boom for an aerial work vehicle, characterized in that it includes multiple-stage booms arranged in nested order from outside to inside, and also includes a first-stage cylinder, a second-stage cylinder, a cylinder bracket, a first pulley, a transmission rope, a guide rope member, a first extension chain, a first retraction chain, and a second chain; The cylinder body of the first-stage cylinder is assembled and connected to the lower end of the first-stage boom, and the end of the telescopic rod of the first-stage cylinder is assembled and connected to the upper end of the second-stage boom; Define any stage of boom after the second-stage boom as boom A, define the next-stage boom of boom A as boom B, and define the last-stage boom as boom C; The end of the telescopic rod of the second-stage cylinder is assembled and connected to the lower end of the cylinder bracket, the cylinder body of the second-stage cylinder is movably fitted with the cylinder bracket, and the telescopic rod of the second-stage cylinder extends and retracts relative to the cylinder body to drive the cylinder body of the second-stage cylinder to make a linear reciprocating movement relative to the cylinder bracket; The end of the telescopic rod of the second-stage cylinder and / or the cylinder bracket are connected to boom A, the cylinder body of the second-stage cylinder is connected to boom B, and the guide rope member is arranged on boom C; Both the left side and the right side of the end of the cylinder body of the second-stage cylinder close to the telescopic rod are rotatably connected to the first pulley; One end of the transmission rope is connected to the cylinder bracket, the transmission rope first bypasses the first pulley on the left side, then bypasses the guide rope member, bypasses the first pulley on the right side, and the other end of the transmission rope is connected to the cylinder bracket; Define any stage of boom among the booms between the first-stage boom and boom A as boom D, define the next-stage boom of boom D as boom E, and define the second-next-stage boom of boom D as boom F; A first extension sprocket is provided at the upper end of boom E, one end of the first extension chain is connected to the upper end of boom D, and the other end of the first extension chain bypasses the first extension sprocket and is then connected to the lower end of boom F; A first retraction sprocket is provided at the lower end of boom E, one end of the first retraction chain is connected to the upper end of boom D, and the other end of the first retraction chain bypasses the first retraction sprocket and is then connected to the lower end of boom F; Define any stage of boom among the booms after boom A as boom G, define the next-stage boom of boom G as boom H, and define the second-next-stage boom of boom G as boom I; A second extension sprocket is provided at the upper end of boom H, one end of the second chain is connected to the upper end of boom G, and the other end of the second chain bypasses the second extension sprocket and is then connected to the lower end of boom I.

2. The double-cylinder telescopic boom for an aerial work vehicle according to claim 1, characterized in that it further includes at least one second pulley group, and the second pulley group includes a pair of second front pulleys and second rear pulleys arranged in pairs; Both the left side and the right side of the cylinder bracket are rotatably connected to the second front pulley, and both the left side and the right side of the end of the cylinder body of the second-stage cylinder close to the telescopic rod are rotatably connected to the second rear pulley; Between the first pulley on the left side and the guide rope member, the transmission rope sequentially bypasses the second front pulley on the left side and the second rear pulley on the left side; Between the guide rope member and the first pulley on the right side, the transmission rope sequentially bypasses the second rear pulley on the right side and the second front pulley on the right side.

3. The double-cylinder telescopic boom for an aerial work vehicle according to claim 1 or 2, characterized in that One end of the cylinder block of the secondary oil cylinder, which is far from the telescopic rod, is provided with a guide frame. A guide wheel is rotatably connected to the guide frame, and the guide wheel is in rolling contact with the inner wall of the multi-stage boom.

4. The double-oil-cylinder telescopic boom for an aerial work vehicle according to claim 3, wherein One guide wheel is arranged at each of the upper and lower ends of the guide frame.

5. The double-oil-cylinder telescopic boom for an aerial work vehicle according to claim 3, wherein First guide blocks are arranged at both the left and right ends of the guide frame.

6. The double-oil-cylinder telescopic boom for an aerial work vehicle according to claim 1, wherein The primary oil cylinder is located outside the first-stage boom, and the secondary oil cylinder and the oil cylinder bracket are located inside the boom.

7. The double-oil-cylinder telescopic boom for an aerial work vehicle according to claim 1, wherein The boom is arranged in seven stages. Boom A is the third-stage boom, and boom C is the seventh-stage boom.

8. The double-oil-cylinder telescopic boom for an aerial work vehicle according to claim 1 or 2, wherein A plurality of second guide blocks are arranged at the upper end of the oil cylinder bracket.

9. The double-oil-cylinder telescopic boom for an aerial work vehicle according to claim 1 or 2, wherein The wire guiding member is arranged as a semi-circular wheel, and the transmission rope contacts the arc edge of the semi-circular wheel.

10. An aerial work platform, characterized in that: The aerial work vehicle is provided with the double-oil-cylinder telescopic boom for an aerial work vehicle according to any one of claims 1 to 9.

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