Telescopic arm structure of an aerial delivery device

Abstract

The application discloses a telescopic arm structure of a high-altitude conveying device, which comprises a first telescopic arm, a second telescopic arm, a third telescopic arm and a fourth telescopic arm in a hollow thin-wall structure; the second telescopic arm is in sliding connection with the first telescopic arm, and the outer side wall of the second telescopic arm is in contact with the inner side wall of the first telescopic arm; the third telescopic arm is in sliding connection with the second telescopic arm, and the outer side wall of the third telescopic arm is in contact with the inner side wall of the second telescopic arm; the fourth telescopic arm is in sliding connection with the third telescopic arm, and the outer side wall of the fourth telescopic arm is in contact with the inner side wall of the third telescopic arm; a plurality of telescopic arms are synchronously controlled by a single oil cylinder, the plurality of telescopic arms are driven by a rope arrangement system, the end of the telescopic arm can reach any height within the range, and the conveying demand of a medium-high storey building without an elevator can be met; a guide groove is arranged on each telescopic arm of the application, the plurality of guide grooves are matched, a material trolley, a hydraulic winch and a two-position three-way electromagnetic valve are arranged, the running speed of the telescopic arm and the winch steel rope is synchronous, and the high building material conveying can be flexibly completed.

Description

Technical Field

[0001] This invention belongs to the field of high-altitude conveying technology, and specifically relates to a telescopic arm structure for a high-altitude conveying device. Background Technology

[0002] Today, aerial work platforms are used in a wider range of applications and operate under more complex conditions, placing higher demands on vehicle storage. They must have sufficient extension at the end of the telescopic boom, and be able to be fully retracted into the vehicle. This places high demands on the cross-section and number of sections of the telescopic boom. Fewer sections result in a narrow telescopic range and are difficult to store, while more sections reduce the load-bearing capacity at the end. Traditional aluminum alloy telescopic booms are not only expensive but also often suffer from low load-bearing capacity and difficult storage. Especially for mid- to high-rise buildings without elevators, the load-bearing capacity at the end plays a crucial role in transporting building materials, directly impacting efficiency. Summary of the Invention

[0003] In order to solve the above-mentioned problems in the existing technology, the present invention aims to provide a telescopic arm structure for a high-altitude conveying device.

[0004] The technical solution adopted in this invention is as follows:

[0005] A telescopic boom structure for an aerial conveyor includes a first telescopic boom, a second telescopic boom, a third telescopic boom, and a fourth telescopic boom with hollow thin-walled structures. The second telescopic boom is slidably connected to the first telescopic boom, and the outer side wall of the second telescopic boom contacts the inner side wall of the first telescopic boom. The third telescopic boom is slidably connected to the second telescopic boom, and the outer side wall of the third telescopic boom contacts the inner side wall of the second telescopic boom. The outer side wall of the fourth telescopic boom contacts the inner side wall of the third telescopic boom. A first connecting frame is fixedly provided at one end of the first telescopic boom, and a first guide groove is detachably installed on one side of the first connecting frame. A second connecting frame is fixedly provided at one end of the second telescopic boom, and a second guide groove is detachably installed on one side of the second connecting frame. A third connecting frame is fixedly provided at one end of the third telescopic boom, and a third guide groove is detachably installed on one side of the third connecting frame. A fourth connecting frame is fixedly provided at one end of the fourth telescopic boom. A fourth guide groove is detachably installed on one side of the fourth connecting frame; a bridge guide groove is slidably provided in the fourth guide groove, and a material cart is detachably installed on the bridge guide groove; a hydraulic cylinder is provided inside the first telescopic arm, and the second telescopic arm is controlled by the hydraulic cylinder; a winch and a winch drum are fixedly provided on the side of the first telescopic arm away from the material cart, and are engaged by a winch clutch; the winch is controlled by a winch motor; a first solenoid valve and a second solenoid valve are detachably installed on one side of the first telescopic arm, and the first solenoid valve, the second solenoid valve, and the multi-way valve are engaged with a multi-way valve; the first solenoid valve, the winch motor, and the multi-way valve are connected by pipes to form a hydraulic circuit; the second solenoid valve, the hydraulic cylinder, and the multi-way valve are connected by pipes to form a hydraulic circuit; adjustable blocks with variable clearance are provided on both sides of the top of the first telescopic arm, the second telescopic arm, and the third telescopic arm; adjustable blocks with variable clearance are provided on both sides of the top of the first telescopic arm, the second telescopic arm, and the third telescopic arm.

[0006] The multi-section telescopic boom, combined with the multi-section guide trough, allows the material transport trolley to slide inside the guide trough. This eliminates the need for lifting or moving materials. The guide trough and trolley on the back of the telescopic boom decompose the weight of the material, preventing it from directly impacting the end of the boom and thus increasing the single-pass conveying capacity of the telescopic boom.

[0007] As a preferred embodiment of the present invention, the hydraulic cylinder includes a cylinder barrel and a piston rod, the piston rod being detachably mounted on a mounting base, the mounting base being fixedly connected to the outer wall of the first telescopic arm, the mounting base and the first connecting frame being located on both sides of the first telescopic arm; the cylinder barrel is connected to the second telescopic arm.

[0008] As a preferred embodiment of the present invention, a connecting plate is fixedly provided at one end of the first telescopic arm away from the first connecting frame, a connecting frame is provided on one side of the connecting plate, the connecting plate is hinged to the connecting frame, a base is fixedly provided at one end of the connecting frame, a support is provided on the periphery of the base, and the base is rotatably connected to the support.

[0009] As a preferred embodiment of the present invention, the third telescopic arm and the fourth telescopic arm are driven by a rope system, the rope system comprising two sets of steel wire ropes, one set of steel wire ropes having its end connected to the first telescopic arm and the third telescopic arm, and the other set of steel wire ropes having its end connected to the second telescopic arm and the fourth telescopic arm.

[0010] Preferably, a first rope groove is fixedly provided on the inner sidewall of the first telescopic arm, the first rope groove being arranged along the length direction of the first telescopic arm, and a first fixing bolt is fixedly provided at one end of the first rope groove, the first fixing bolt being located at the end of the first rope groove near the hydraulic cylinder; a second rope groove is fixedly provided on the inner sidewall of the second telescopic arm, the second rope groove being arranged along the length direction of the second telescopic arm, and a second fixing bolt is provided on one side of the second rope groove, the second fixing bolt being fixedly provided on the second telescopic arm, the second fixing bolt being located on one side of the outer sidewall of the second telescopic arm, the second fixing bolt and the second connecting frame being located at both ends of the second telescopic arm respectively; the third telescopic arm... A third rope groove is fixedly provided on the inner sidewall, the third rope groove is arranged along the length direction of the third telescopic arm, a third fixing bolt is provided on one side of the third rope groove, the third fixing bolt is fixedly installed on the third telescopic arm, the third fixing bolt is located on one side of the outer sidewall of the third telescopic arm, the third fixing bolt and the third connecting frame are respectively located at both ends of the third telescopic arm; a fourth fixing bolt is fixedly provided on the outer sidewall of the fourth telescopic arm, the fourth fixing bolt and the fourth connecting frame are respectively located at both ends of the fourth telescopic arm; one end of a steel wire rope is connected to the first fixing bolt and the third fixing bolt respectively, and the other end of a steel wire rope is connected to the second fixing bolt and the fourth fixing bolt respectively.

[0011] As a preferred embodiment of the present invention, a first pulley is provided in the second rope groove, and the first pulley is located at the end of the second telescopic arm away from the second fixing bolt; a second pulley is provided in the third rope groove, and the second pulley is located at the end of the third telescopic arm away from the third fixing bolt; the wire rope connected to the first fixing bolt and the third fixing bolt is bent into two sections around the first pulley, and located in the first rope groove and the second rope groove respectively; the wire rope connected to the second fixing bolt and the fourth fixing bolt is bent into two sections around the second pulley, and located in the first rope groove and the third rope groove respectively.

[0012] As a preferred embodiment of the present invention, a support rod is fixedly provided at one end of the fourth connecting frame, and a plurality of rotating wheels are rotatably provided on the support rod; the first guide groove, the second guide groove, the third guide groove and the fourth guide groove are slidably connected in sequence, and the cross-sections are all U-shaped structures with different sizes.

[0013] As a preferred embodiment of the present invention, the base is provided with a gear ring at one end away from the connecting frame, which cooperates with the motor and the reducer; the connecting frame is provided with a drive cylinder on the side away from the connecting plate, the drive cylinder includes a drive cylinder barrel and a drive cylinder piston rod, the drive cylinder barrel is hinged to the connecting frame, and the drive cylinder piston rod is hinged to the first telescopic arm.

[0014] As a preferred embodiment of the present invention, the first solenoid valve includes three oil ports, namely a first solenoid valve oil port, a second solenoid valve oil port, and a third solenoid valve oil port; the second solenoid valve includes three oil ports, namely a fourth solenoid valve oil port, a fifth solenoid valve oil port, and a sixth solenoid valve oil port; and a material cart is slidably disposed within the bridge guide groove.

[0015] As a preferred embodiment of the present invention, the winch motor has two oil ports, namely a first winch motor oil port and a second winch motor oil port; it also includes a multi-way valve, which has four oil ports, namely a first multi-way valve oil port, a second multi-way valve oil port, a third multi-way valve oil port, and a fourth multi-way valve oil port.

[0016] The beneficial effects of this invention are as follows: As a telescopic boom structure for a high-altitude conveying device, this invention utilizes a single hydraulic cylinder to synchronously control multiple telescopic boom sections, which are driven by a rope system. The end of the telescopic boom can reach any height within its range, meeting the transportation needs of mid- to high-rise buildings without elevators. Each telescopic boom section of this invention is equipped with a guide trough, and multiple guide trough sections work together. A material trolley, hydraulic winch, and two-position three-way solenoid valve are also included to synchronize the operating speed of the telescopic boom and winch steel ropes, enabling flexible material transport for high-rise buildings. The telescopic boom and guide troughs of this invention can be manufactured using standard parts through cutting and welding, significantly reducing costs compared to traditional non-standard telescopic booms. The control method using a single hydraulic cylinder and winch ensures more precise coordination between the material trolley and the telescopic boom. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is the present invention. Figure 1 A schematic diagram of the side view structure;

[0020] Figure 3 This is the present invention. Figure 2 A schematic diagram of the CC-direction structure;

[0021] Figure 4 This is the present invention. Figure 3 A magnified structural diagram at point B;

[0022] Figure 5This is the present invention. Figure 1 A perspective (hidden lines and dashed lines) schematic diagram of the first telescopic arm and the first guide groove structure;

[0023] Figure 6 This is the present invention. Figure 5 A front view structural diagram;

[0024] Figure 7 This is the present invention. Figure 5 A schematic diagram of the rear view structure;

[0025] Figure 8 This is the present invention. Figure 1 A schematic diagram of the second telescopic arm and the second guide groove structure;

[0026] Figure 9 This is the present invention. Figure 8 A schematic diagram of the rear view structure;

[0027] Figure 10 This is the present invention. Figure 1 A schematic diagram of the third telescopic arm and the third guide groove structure;

[0028] Figure 11 This is the present invention. Figure 10 A schematic diagram of the rear view structure;

[0029] Figure 12 This is the present invention. Figure 1 A schematic diagram of the fourth telescopic arm and the fourth guide groove (support rod facing forward);

[0030] Figure 13 This is a schematic diagram of the working principle (oil circuit control) of the present invention;

[0031] Figure 14 This invention Figure 13 Another schematic diagram of its working state. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] The following is combined with Figure 1-14 This invention describes a specific embodiment of a telescopic boom structure for an aerial conveyor, comprising a first telescopic boom 25, a second telescopic boom 26, a third telescopic boom 27, and a fourth telescopic boom 28, all with hollow thin-walled structures. The second telescopic boom 26 is slidably connected to the first telescopic boom 25, with its outer sidewall contacting the inner sidewall of the first telescopic boom 25. The third telescopic boom 27 is slidably connected to the second telescopic boom 26, with its outer sidewall contacting the inner sidewall of the second telescopic boom 26. The outer sidewall of the fourth telescopic boom 28 contacts the inner sidewall of the third telescopic boom 27. A first connecting frame 19 is fixedly provided at one end of the first telescopic boom 25. A first guide groove 15 is detachably installed on one side of a connecting frame 19. A second connecting frame 20 is fixedly installed at one end of the second telescopic arm 26, and a second guide groove 16 is detachably installed on one side of the second connecting frame 20. A third connecting frame 21 is fixedly installed at one end of the third telescopic arm 27, and a third guide groove 17 is detachably installed on one side of the third connecting frame 21. A fourth connecting frame 22 is fixedly installed at one end of the fourth telescopic arm 28, and a fourth guide groove 18 is detachably installed on one side of the fourth connecting frame 22. A hydraulic cylinder 58 is installed inside the first telescopic arm 25, and the second telescopic arm 26 is controlled by the hydraulic cylinder 58. The third telescopic arm 27 and the fourth telescopic arm 28 are driven by a rope system. The dimensions of the multi-section telescopic arms and multi-section guide grooves are progressively larger, and the difference between adjacent dimensions is equal to their own thickness.

[0035] Advantageously, the hydraulic cylinder 58 includes a cylinder barrel 42 and a piston rod 32; the hydraulic cylinder 58 has two oil ports, namely a first hydraulic cylinder port 67 and a second hydraulic cylinder port 68; the piston rod 32 is detachably mounted on a mounting base 30, the mounting base 30 being fixedly connected to the outer wall of the first telescopic arm 25, and the mounting base 30 and the first connecting frame 19 being located on both sides of the first telescopic arm 25; the cylinder barrel 42 is connected to the second telescopic arm 26. The hydraulic cylinder 58 directly drives the second telescopic arm 26.

[0036] Advantageously, a connecting plate 11 is fixedly provided at one end of the first telescopic arm 25 away from the first connecting frame 19, a connecting frame 12 is provided on one side of the connecting plate 11, the connecting plate 11 is hinged to the connecting frame 12, a base 14 is fixedly provided at one end of the connecting frame 12, a support 13 is provided on the periphery of the base 14, and the base 14 is rotatably connected to the support 13.

[0037] Advantageously, the rope system includes two sets of wire ropes, one set of wire ropes having its end connected to the first telescopic arm 25 and the third telescopic arm 27, and the other set of wire ropes having its end connected to the second telescopic arm 26 and the fourth telescopic arm 28.

[0038] Advantageously, a first rope groove 33 is fixedly provided on the inner sidewall of the first telescopic arm 25. The first rope groove 33 is arranged along the length direction of the first telescopic arm 25, and a first fixing bolt 29 is fixedly provided at one end of the first rope groove 33. The first fixing bolt 29 is located at the end of the first rope groove 33 near the hydraulic cylinder 58. A second rope groove 34 is fixedly provided on the inner sidewall of the second telescopic arm 26. The second rope groove 34 is arranged along the length direction of the second telescopic arm 26, and a second fixing bolt 35 is provided on one side of the second rope groove 34. The second fixing bolt 35 is fixedly provided on the second telescopic arm 26 and is located on one side of the outer sidewall of the second telescopic arm 26. The second fixing bolt 35 and the second connecting frame 20 are respectively located at both ends of the second telescopic arm 26. The inner sidewall of the third telescopic arm 27... A third rope groove 37 is fixedly provided on the side wall. The third rope groove 37 is arranged along the length direction of the third telescopic arm 27. A third fixing bolt 38 is provided on one side of the third rope groove 37. The third fixing bolt 38 is fixedly installed on the third telescopic arm 27. The third fixing bolt 38 is located on one side of the outer wall of the third telescopic arm 27. The third fixing bolt 38 and the third connecting frame 21 are respectively located at both ends of the third telescopic arm 27. A fourth fixing bolt 40 is fixedly provided on the outer wall of the fourth telescopic arm 28. The fourth fixing bolt 40 and the fourth connecting frame 22 are respectively located at both ends of the fourth telescopic arm 28. The two ends of one wire rope are respectively connected to the first fixing bolt 29 and the third fixing bolt 38, and the two ends of the other wire rope are respectively connected to the second fixing bolt 35 and the fourth fixing bolt 40.

[0039] Advantageously, a first pulley 36 is provided in the second rope groove 34, and the first pulley 36 is located at the end of the second telescopic arm 26 away from the second fixing bolt 35; a second pulley 39 is provided in the third rope groove 37, and the second pulley 39 is located at the end of the third telescopic arm 27 away from the third fixing bolt 38; the wire rope connected to the first fixing bolt 29 and the third fixing bolt 38 is bent into two sections around the first pulley 36, and located in the first rope groove 33 and the second rope groove 34 respectively; the wire rope connected to the second fixing bolt 35 and the fourth fixing bolt 40 is bent into two sections around the second pulley 39, and located in the first rope groove 33 and the third rope groove 37 respectively.

[0040] Advantageously, a support rod 23 is fixedly provided at one end of the fourth connecting frame 22, and multiple rotating wheels 24 are rotatably provided on the support rod 23, and the multiple rotating wheels 24 form a pulley group 56; the first guide groove 15, the second guide groove 16, the third guide groove 17 and the fourth guide groove 18 are slidably connected in sequence, and all of them have U-shaped structures with different cross-sections.

[0041] Advantageously, the cross-sections of the first telescopic arm 25, the second telescopic arm 26, the third telescopic arm 27 and the fourth telescopic arm 28 are all pentagonal, the side of the first telescopic arm 25 near the first guide groove 15 is smooth, and the side of the first telescopic arm 25 away from the first guide groove 15 has a rhomboid structure.

[0042] Advantageously, the base 14 is provided with a toothed ring at one end away from the connecting frame 12, which cooperates with the motor and the reducer; the connecting frame 12 is provided with a drive cylinder on the side away from the connecting plate 11, the drive cylinder includes a drive cylinder barrel and a drive cylinder piston rod, the drive cylinder barrel is hinged to the connecting frame 12, and the drive cylinder piston rod is hinged to the first telescopic arm 25.

[0043] Advantageously, a first solenoid valve 59 and a second solenoid valve 63 are detachably installed on one side of the first telescopic arm 25; the first solenoid valve 59 includes three ports, namely a first solenoid valve port 60, a second solenoid valve port 61, and a third solenoid valve port 62; the second solenoid valve 63 includes three ports, namely a fourth solenoid valve port 64, a fifth solenoid valve port 65, and a sixth solenoid valve port 66. Both the first solenoid valve 59 and the second solenoid valve 63 are two-position three-way solenoid valves.

[0044] Advantageously, a bridge guide groove 73 is slidably provided on the fourth telescopic arm 28, and a material cart 57 is slidably provided in the bridge guide groove 73.

[0045] Advantageously, a winch and a winch drum 54 are fixedly provided on the side of the first telescopic arm 25 away from the material cart 57, and are engaged by a winch clutch 53; the winch is controlled by a winch motor; the winch motor has two oil ports, namely a first winch motor oil port 51 and a second winch motor oil port 52.

[0046] Advantageously, it also includes a multi-way valve with four ports: a first multi-way valve port 69, a second multi-way valve port 70, a third multi-way valve port 71, and a fourth multi-way valve port 72. The first solenoid valve 59, the winch motor, and the multi-way valve are connected by pipes to form a hydraulic circuit. The second solenoid valve 63, the cylinder 58, and the multi-way valve are connected by pipes to form a hydraulic circuit.

[0047] Working principle of this invention:

[0048] The motor and reducer work together to drive the base 14 to rotate relative to the support 13, which in turn drives the connecting frame 12, the connecting plate 11, and all the telescopic arms to rotate together. The rotation angle can be adjusted arbitrarily with high precision.

[0049] The drive cylinder starts, which can control the angle between the telescopic arm and the ground, and can be adjusted arbitrarily within a range not exceeding ninety degrees;

[0050] When the hydraulic cylinder 58 is activated, the piston rod 32 moves relative to the cylinder 42, and the cylinder 42 drives the second telescopic arm 26 to move. The second telescopic arm 26 slides relative to the first telescopic arm 25. At the same time, under the action of the rope system, the third telescopic arm 27 and the fourth telescopic arm 28 also move. The sliding distance of the third telescopic arm 27 relative to the second telescopic arm 26 is equal to the extension of the piston rod, and the sliding distance of the fourth telescopic arm 28 relative to the third telescopic arm 27 is also equal to the extension of the piston rod.

[0051] Specifically, when the second telescopic arm 26 slides, the position of the first pulley 36 relative to the first fixing bolt 29 changes, while the length of the wire rope remains unchanged. At this time, the first pulley 36 is equivalent to a movable pulley, and the third fixing bolt 38 at the other end of the wire rope is forced to move. Relative to the first fixing bolt 29, the moving distance of the third fixing bolt 38 is equal to twice that of the first pulley 36. The movement of the third fixing bolt 38 causes the third telescopic arm 27 to move together. Similarly, the third telescopic arm 27 moves relative to the first telescopic arm 25 by two piston rod extensions, and moves relative to the second telescopic arm 26 by one piston rod extension. The fourth telescopic arm 28 moves relative to the second telescopic arm 26 by a distance equal to twice the moving distance of the third telescopic arm 27 relative to the second telescopic arm 26. Therefore, the distance that the fourth telescopic arm 28 moves relative to the first telescopic arm 25 is equal to the length of three piston rod extensions.

[0052] In this invention, the fourth guide groove 18 can connect the slide rail and the trolley to realize high-altitude transportation.

[0053] In the embodiments of this invention, the number of telescopic arms is four. However, in practical applications, the number of telescopic arms is not limited to four; it is at least three, and can be five, six, or more. The more telescopic arms there are, the farther the rotating wheel 24 at the end of the telescopic arm can reach. However, the hydraulic cylinder 58 needs to overcome greater resistance, and the load requirement on the wire rope is also greater. Based on actual operation investigations and calculations of the actual height of mid-to-high-rise residential buildings without elevators, the farthest distance at the end of the telescopic arm is determined. The optimal number of telescopic arms is four to six sections, which also ensures that the telescopic arms can be fully retracted and stored inside the engineering vehicle. When the engineering vehicle compartment is small, the length of each telescopic arm section can be reduced to increase the number of telescopic arms. When the number of telescopic arms exceeds six, multiple sets of wire ropes and a more powerful hydraulic cylinder 58 are required. Adjustment blocks are provided between multiple telescopic arm sections. The adjustment blocks are common friction pads, which mainly solve the friction problem between the telescopic arms. The shape and installation position of the pads are determined by the actual situation.

[0054] Reference Appendix Figure 13The working process of this invention is explained in detail. In the initial state:

[0055] 1. The first cylinder oil port 67 is the oil inlet of the large chamber of the cylinder, and the second cylinder oil port 68 is the oil inlet of the small chamber of the cylinder. When oil enters the first cylinder oil port 67 and oil exits the second cylinder oil port 68, the cylinder extends; when oil enters the second cylinder oil port 68 and oil exits the first cylinder oil port 67, the cylinder shortens.

[0056] 2. The winch clutch 53 is engaged with the winch.

[0057] 3. The first solenoid valve 59 and the second solenoid valve 63 are two-position three-way solenoid valves; the first solenoid valve 59 and the second solenoid valve 63 are not energized; the oil port 60 of the first solenoid valve and the oil port 62 of the third solenoid valve are connected; the oil port 61 of the second solenoid valve and the oil port 62 of the third solenoid valve are not connected; the oil port 64 of the fourth solenoid valve and the oil port 66 of the sixth solenoid valve are connected; the oil port 65 of the fifth solenoid valve and the oil port 66 of the sixth solenoid valve are not connected.

[0058] 4. Both the first solenoid valve 59 and the second solenoid valve 63 are energized. The oil port 60 of the first solenoid valve and the oil port 62 of the third solenoid valve are not connected. The oil port 61 of the second solenoid valve is connected to the oil port 62 of the third solenoid valve. The oil port 64 of the fourth solenoid valve and the oil port 66 of the sixth solenoid valve are not connected. The oil port 65 of the fifth solenoid valve is connected to the oil port 66 of the sixth solenoid valve.

[0059] 5. The first winch motor oil port 51 and the third solenoid valve oil port 62 are connected through hydraulic pipes, the second winch motor oil port 52 is connected to the first connecting frame 19, and the first solenoid valve oil port 60 and the second multi-way valve oil port 70 are connected; when oil enters the first winch motor oil port 51, the winch drum 54 rotates counterclockwise and the steel cable 55 is wound up.

[0060] 6. The fourth solenoid valve port 64 is connected to the third multi-way valve port 71 via hydraulic pipes; the sixth solenoid valve port 66 is connected to the first cylinder port 67; the second cylinder port 68 is connected to the fourth multi-way valve port 72; and the second solenoid valve port 61 is connected to the fifth solenoid valve port 65.

[0061] Work process:

[0062] 1. Upon arrival at the work site, the telescopic boom is erected. Oil enters through port 52 of the second winch motor and exits through port 51 of the first winch motor. The winch drum 54 rotates clockwise, the steel cable 55 is released, and the material car 57 and the bridge guide trough 73 are lowered to the ground by gravity.

[0063] 2. The winch clutch 53 is disengaged from the winch, and the winch drum 54 is in a stationary, follow-up state. Oil enters through port 67 of the first hydraulic cylinder and exits through port 68 of the second hydraulic cylinder. The extension of cylinder 58 causes the telescopic boom to extend; the pulley block 56 at the top of the telescopic boom drives the steel cable 55, and the winch drum 54 rotates accordingly, releasing the steel cable 55 and maintaining synchronization with the telescopic boom. The bridge guide trough 73 and the material car 57 remain on the ground under the influence of gravity.

[0064] 3. When the telescopic boom reaches the predetermined height, the winch clutch 53 engages with the winch. The material cart 57 is filled with material, oil enters through the first winch motor oil port 51, oil exits through the second winch motor oil port 52, the winch drum 54 rotates counterclockwise, and the material cart moves upward.

[0065] 4. Operation completed. Oil enters through port 52 of the second winch motor and exits through port 51 of the first winch motor. The winch drum 54 rotates clockwise, the steel cable 55 is released, and the material car 57 and the bridge guide trough 73 are lowered to the ground by gravity. Oil enters through port 68 of the second hydraulic cylinder and exits through port 67 of the first hydraulic cylinder. The hydraulic cylinder 58 shortens, causing the telescopic boom to shorten synchronously. At the same time as oil enters through port 67 of the first hydraulic cylinder, the first solenoid valve 59 and the second solenoid valve 63 are energized. The hydraulic oil from port 67 of the first hydraulic cylinder is input to port 61 of the second solenoid valve through port 65 of the fifth solenoid valve, and finally enters port 51 of the first winch motor, realizing the counterclockwise rotation of the winch and ensuring that the steel cable 55 is properly wound on the winch drum 54 while the telescopic boom shortens.

[0066] 5. When the hydraulic cylinder 58 retracts to its final position, the first solenoid valve 59 and the second solenoid valve 63 are de-energized, the oil circuit returns to its original state, oil enters the first winch motor oil port 51, oil exits the second winch motor oil port 52, the winch drum 54 rotates counterclockwise, and the material car 57 and the bridge guide trough 73 return to the top of the first telescopic boom 25.

[0067] 6. Lower the telescopic boom onto the support frame.

[0068] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0069] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A telescopic boom structure for an aerial conveyor, characterized in that: The device includes a first telescopic arm, a second telescopic arm, a third telescopic arm, and a fourth telescopic arm with hollow thin-walled structures. The second telescopic arm is slidably connected to the first telescopic arm, and the outer side wall of the second telescopic arm contacts the inner side wall of the first telescopic arm. The third telescopic arm is slidably connected to the second telescopic arm, and the outer side wall of the third telescopic arm contacts the inner side wall of the second telescopic arm. The outer side wall of the fourth telescopic arm contacts the inner side wall of the third telescopic arm. A first connecting frame is fixedly provided at one end of the first telescopic arm, and a first guide groove is detachably installed on one side of the first connecting frame. A second connecting frame is fixedly provided at one end of the second telescopic arm, and a second guide groove is detachably installed on one side of the second connecting frame. A third connecting frame is fixedly provided at one end of the third telescopic arm, and a third guide groove is detachably installed on one side of the third connecting frame. A fourth telescopic arm is fixedly provided at one end of the fourth telescopic arm. The system includes a fourth connecting frame, on one side of which a fourth guide groove is detachably mounted; a bridge guide groove is slidably provided within the fourth guide groove, and a material cart is detachably mounted on the bridge guide groove; a hydraulic cylinder is provided inside the first telescopic arm, and the second telescopic arm is controlled by the hydraulic cylinder; a winch and a winch drum are fixedly provided on the side of the first telescopic arm away from the material cart, and are engaged by a winch clutch; the winch is controlled by a winch motor; a first solenoid valve and a second solenoid valve are detachably mounted on one side of the first telescopic arm, and the first and second solenoid valves are engaged with a multi-way valve; the first solenoid valve, the winch motor, and the multi-way valve are connected by pipes to form a hydraulic circuit; the second solenoid valve, the hydraulic cylinder, and the multi-way valve are connected by pipes to form a hydraulic circuit; adjustable blocks with variable clearance are provided on both sides of the top of the first, second, and third telescopic arms. The third telescopic arm and the fourth telescopic arm are driven by a rope system, which includes two sets of steel wire ropes. One set of steel wire ropes connects the end of the first telescopic arm and the third telescopic arm, and the other set of steel wire ropes connects the end of the second telescopic arm and the fourth telescopic arm. A first rope groove is fixedly provided on the inner sidewall of the first telescopic arm, the first rope groove being arranged along the length direction of the first telescopic arm, and a first fixing bolt is fixedly provided at one end of the first rope groove, the first fixing bolt being located at the end of the first rope groove near the hydraulic cylinder; a second rope groove is fixedly provided on the inner sidewall of the second telescopic arm, the second rope groove being arranged along the length direction of the second telescopic arm, and a second fixing bolt is provided on one side of the second rope groove, the second fixing bolt being fixedly provided on the second telescopic arm, the second fixing bolt being located on one side of the outer sidewall of the second telescopic arm, the second fixing bolt and the second connecting frame being located at both ends of the second telescopic arm respectively; a first rope groove is fixedly provided on the inner sidewall of the third telescopic arm, the second rope groove being arranged along the length direction of the second telescopic arm, and a first fixing bolt is fixedly provided at one end of the first rope groove, the second fixing bolt being located at one end of the first rope groove, the second fixing bolt being located at one end of the second telescopic arm, the second fixing bolt and the second connecting frame being located at both ends of the second telescopic arm respectively; a first rope groove is fixedly provided on the inner sidewall of the third telescopic arm, the second rope groove being arranged along the length direction of the second telescopic arm, and a second fixing bolt is fixedly provided on one end of the first rope groove, the second fixing bolt being located at one end of the second telescopic arm ... A third rope groove is provided, which is arranged along the length direction of the third telescopic arm. A third fixing bolt is provided on one side of the third rope groove. The third fixing bolt is fixedly installed on the third telescopic arm and is located on one side of the outer wall of the third telescopic arm. The third fixing bolt and the third connecting frame are respectively located at both ends of the third telescopic arm. A fourth fixing bolt is fixedly provided on the outer wall of the fourth telescopic arm. The fourth fixing bolt and the fourth connecting frame are respectively located at both ends of the fourth telescopic arm. The two ends of one wire rope are respectively connected to the first fixing bolt and the third fixing bolt, and the two ends of the other wire rope are respectively connected to the second fixing bolt and the fourth fixing bolt.

2. The telescopic boom structure of a high-altitude conveying device according to claim 1, characterized in that: The hydraulic cylinder includes a cylinder barrel and a piston rod. The piston rod is detachably mounted on a mounting base. The mounting base is fixedly connected to the outer wall of the first telescopic arm. The mounting base and the first connecting frame are located on both sides of the first telescopic arm, respectively. The cylinder barrel is connected to the second telescopic arm.

3. The telescopic boom structure of a high-altitude conveying device according to claim 2, characterized in that: A connecting plate is fixedly provided at one end of the first telescopic arm away from the first connecting frame. A connecting frame is provided on one side of the connecting plate. The connecting plate is hinged to the connecting frame. A base is fixedly provided at one end of the connecting frame. A support is provided around the base. The base and the support are rotatably connected.

4. The telescopic boom structure of a high-altitude conveying device according to claim 1, characterized in that: A first pulley is provided in the second rope groove, and the first pulley is located at the end of the second telescopic arm away from the second fixing bolt; a second pulley is provided in the third rope groove, and the second pulley is located at the end of the third telescopic arm away from the third fixing bolt; the wire rope connected to the first fixing bolt and the third fixing bolt is bent into two sections around the first pulley, and located in the first rope groove and the second rope groove respectively; the wire rope connected to the second fixing bolt and the fourth fixing bolt is bent into two sections around the second pulley, and located in the first rope groove and the third rope groove respectively.

5. The telescopic boom structure of a high-altitude conveying device according to claim 1, characterized in that: One end of the fourth connecting frame is fixedly provided with a support rod, and multiple rotating wheels are rotatably provided on the support rod; the first guide groove, the second guide groove, the third guide groove and the fourth guide groove are slidably connected in sequence, and all of them have U-shaped structures with different cross-sections.

6. The telescopic boom structure of a high-altitude conveying device according to claim 3, characterized in that: The base has a gear ring at one end away from the connecting frame, which cooperates with the motor and the reducer; the connecting frame has a drive cylinder on the side away from the connecting plate, the drive cylinder includes a drive cylinder barrel and a drive cylinder piston rod, the drive cylinder barrel is hinged to the connecting frame, and the drive cylinder piston rod is hinged to the first telescopic arm.

7. The telescopic boom structure of a high-altitude conveying device according to claim 6, characterized in that: The first solenoid valve includes three oil ports: a first solenoid valve oil port, a second solenoid valve oil port, and a third solenoid valve oil port; the second solenoid valve includes three oil ports: a fourth solenoid valve oil port, a fifth solenoid valve oil port, and a sixth solenoid valve oil port; a material cart is slidably installed in the bridge guide groove.

8. The telescopic boom structure of a high-altitude conveying device according to claim 7, characterized in that: The winch motor has two oil ports, namely the first winch motor oil port and the second winch motor oil port; the multi-way valve has four oil ports, namely the first multi-way valve oil port, the second multi-way valve oil port, the third multi-way valve oil port, and the fourth multi-way valve oil port.

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