Connecting arm structure of climbing equipment and climbing equipment

Abstract

The embodiment of the application provides a connecting arm structure of a climbing equipment and the climbing equipment, and belongs to the technical field of climbing equipment. The connecting arm structure comprises a ladder arm and a ladder body connected with the ladder arm; a curved arm piece and a curved arm ladder assembly, the curved arm ladder assembly comprises a curved arm ladder body and a movable ladder slidingly arranged on the curved arm ladder body, one end of the curved arm piece is hinged to the ladder arm, and the other end of the curved arm piece and the curved arm ladder body are both used for being connected with a working bucket of the climbing equipment; one end of a connecting rod assembly is hinged to the ladder body, and the other end of the connecting rod assembly is hinged to the movable ladder; and a rotary driving assembly is connected with the curved arm ladder body. The connecting arm structure of the embodiment of the application can compensate and eliminate the connecting gap between the ladder and the curved arm ladder, thereby being beneficial to improving the safety performance.

Description

Technical Field

[0001] This application relates to aerial work platform technology, and more particularly to a connecting arm structure for aerial work platform and the aerial work platform itself. Background Technology

[0002] Aerial fire trucks, ladder trucks, and other aerial firefighting equipment include booms, ladders, and work platforms. Both booms and ladders consist of multiple folding sections, with each boom section and ladder section connected to the other. Both booms and ladders are connected to the work platform, allowing workers to descend to the ground from the work platform via the ladder.

[0003] The ladder and the work bucket are connected by a curved arm ladder, and the boom and the work bucket are connected by a curved arm. Both the curved arm ladder and the curved arm are driven to rotate by a rotary drive component so that the work bucket can be unfolded or folded away relative to the ladder.

[0004] Due to structural limitations and interference from assembly space, the hinge points of the articulated ladder and the articulated arm are not concentric, resulting in a large gap between the deployed articulated ladder and the adjacent ladder, which poses a risk of workers and rescuers falling into the gap. Utility Model Content

[0005] This application provides a connecting arm structure for a climbing device and a climbing device in order to solve the problem of potential fall hazards caused by gaps between articulated ladders and ladders in related technologies.

[0006] On one hand, this application provides a connecting arm structure for a climbing device, comprising:

[0007] The ladder arm and the ladder body connected to the ladder arm;

[0008] The articulated boom assembly and the articulated boom ladder assembly include an articulated boom ladder body and a movable ladder slidably disposed on the articulated boom ladder body. One end of the articulated boom assembly is hinged to the ladder arm, and the other end of the articulated boom assembly and the articulated boom ladder body are both used to connect to the working bucket of the climbing equipment.

[0009] The linkage assembly is hinged at one end to the ladder body and at the other end to the movable ladder;

[0010] A rotary drive assembly is connected to the articulated ladder body;

[0011] The articulated ladder body is configured such that, when the articulated arm rotates, it is driven by the rotation drive assembly to rotate relative to the articulated arm, so that the movable ladder extends or retracts relative to the articulated ladder body; when the movable ladder retracts relative to the articulated ladder body, the articulated ladder body and the articulated arm are arranged in parallel; when the movable ladder extends relative to the articulated ladder body, the articulated ladder body and the articulated arm have an included angle.

[0012] In some possible implementations, the rotary drive assembly includes:

[0013] The curved arm support component is connected at one end to the curved arm ladder body;

[0014] A rotary drive component is disposed at one end of the curved arm support component away from the curved arm ladder body. The rotary drive component includes a mounting base and a rotary drive end connected to the mounting base. The mounting base is connected to the curved arm component, and the rotary drive end is connected to the curved arm support component.

[0015] In some possible implementations, the crank arm component is provided with a mounting bracket on the side facing the crank arm support component, and the mounting bracket is connected to the mounting base.

[0016] In some possible implementations, the linkage assembly includes two parallel connecting rods with at least two treads spaced apart between them. One end of each connecting rod is hinged to the end of the movable ladder via a common pivot, and the other end of each connecting rod is hinged to the end of the ladder body via a common pin.

[0017] In some possible implementations, it also includes:

[0018] Multiple angle detection components are respectively disposed on the articulated boom, the ladder arm, and the articulated boom support;

[0019] The control component is connected to the plurality of angle detection components and the rotation drive component. The control component is configured to control the rotation of the rotation drive component according to the angle data of the plurality of angle detection components, so that the curved arm ladder body rotates synchronously relative to the curved arm component when the curved arm component rotates.

[0020] In some possible implementations, the articulated arm support includes a main rod, a secondary rod, and at least two support rods. One end of the main rod is rotatably connected to the articulated arm via the rotary drive, and the other end of the main rod is connected to at least two support rods via the secondary rod. At least two support rods are connected to the articulated arm ladder body.

[0021] In some possible implementations, the articulated ladder body is provided with a first mating component, and the movable ladder is provided with a second mating component. The first and second mating components are slidably connected so that the articulated ladder body and the movable ladder are slidably connected.

[0022] In some possible implementations, the first mating member is a slide rail, and the second mating member is a slider that engages with the first mating member; or, the first mating member is a slider, and the second mating member is a slide rail for engaging with the first mating member.

[0023] On the other hand, this application provides a climbing device, including a work bucket and a connecting arm structure of the climbing device as described in any of the preceding claims, connected to the work bucket.

[0024] In some possible implementations, a turntable is also included, on which a rotatable telescopic main boom is provided, the telescopic main boom is connected to a main boom ladder, and the telescopic main boom is connected to the ladder arm of the connecting arm structure of the climbing equipment.

[0025] The work bucket is connected to the articulated arm of the connecting arm structure of the climbing equipment via a balance arm. The work bucket is provided with an inlet / outlet opening for connecting the articulated arm ladder assembly. A rotatable flap is connected to the lower end of the inlet / outlet opening. The flap has an auxiliary plate extending toward the articulated arm ladder assembly. The auxiliary plate is used to overlap with the articulated arm ladder assembly.

[0026] The connecting arm structure and climbing equipment provided in this application, in which the articulated ladder body is driven to rotate relative to the articulated arm member by the rotation drive assembly when the articulated arm member rotates, so that the movable ladder extends or retracts relative to the articulated ladder body; when the movable ladder retracts relative to the articulated ladder, the articulated ladder body and the articulated arm member are arranged in parallel; when the movable ladder extends relative to the articulated ladder, the articulated ladder body and the articulated arm member have an angle. Thus, the movable ladder and the climbing ladder body can be seamlessly connected through the linkage assembly, and the articulated ladder body, movable ladder, linkage assembly, and climbing ladder body form a continuous passage path without breaks, eliminating the risk of falling and enhancing the overall safety performance of the connecting arm structure. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of the connecting arm structure in an embodiment of this application;

[0029] Figure 2 for Figure 1 A schematic diagram of the connecting arm structure in the retracted state;

[0030] Figure 3 This is a schematic diagram of the connection structure between the articulated boom member and the articulated boom ladder assembly in the embodiments of this application;

[0031] Figure 4 for Figure 3 Schematic diagram of the rotating drive component;

[0032] Figure 5 for Figure 3 Schematic diagram of the structure of the mid-arc arm support component;

[0033] Figure 6 This is a schematic diagram showing the connection of the control component, the rotation drive component, and the angle detection component in an embodiment of this application;

[0034] Figure 7 This is a schematic diagram showing the connection between the articulated ladder body and the movable ladder in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram showing the position of the connecting arm structure in the retracted state according to an embodiment of this application;

[0036] Figure 9 This is a schematic diagram showing the position of the connecting arm structure in the deployed state according to an embodiment of this application;

[0037] Figure 10 This is a schematic diagram of the overall structure of the climbing equipment in the embodiments of this application.

[0038] Explanation of reference numerals in the attached figures

[0039] 100. Ladder arm; 101. Ladder body;

[0040] 200. Articulated boom assembly; 210. Articulated boom body; 211. Mounting bracket; 220. First reinforcing plate; 230. Second reinforcing plate;

[0041] 300. Articulated ladder assembly; 310. Articulated ladder body; 311. First mating part; 320. Movable ladder; 321. Second mating part;

[0042] 400. Linkage assembly; 410. Connecting rod; 420. Step bar;

[0043] 500. Rotary drive assembly; 510. Crank arm support; 511. Main rod; 512. Secondary rod; 513. Support rod; 520. Rotary drive component; 521. Mounting base; 522. Rotary drive end; 530. Angle detection component; 540. Adjustment component;

[0044] 600, turntable;

[0045] 700. Telescopic boom;

[0046] 800. Working bucket; 810. Inlet / outlet opening; 820. Counterweight arm; 830. Flip plate.

[0047] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0052] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0053] In current aerial work platforms, the ladder and the work bucket are connected by an articulated ladder, and the boom and the work bucket are connected by an articulated boom. Both the articulated ladder and the articulated boom are driven to rotate by a rotary drive component, so that the work bucket can be unfolded or folded away relative to the ladder.

[0054] Because the articulated boom ladder connects the ladder and the work bucket, and the articulated boom connects the boom and the work bucket, and the articulated boom ladder and the articulated boom rotate independently, a non-concentric hinge design is required due to the limitation of installation space. The rotation hinge points of the articulated boom ladder and the articulated boom are not concentric, resulting in a large gap between the deployed articulated boom ladder and the adjacent ladder, which easily causes the risk of workers and rescuers falling into the gap.

[0055] Based on the above description, one or more embodiments of this application provide a connecting arm structure and a climbing device. In the connecting arm structure, when the curved arm component rotates, the body of the curved arm ladder is driven by a rotation drive component to rotate relative to the curved arm component, so that the movable ladder extends or retracts relative to the curved arm ladder body. When the movable ladder retracts relative to the curved arm ladder, the body of the curved arm ladder and the curved arm component are arranged in parallel. When the movable ladder extends relative to the curved arm ladder, the body of the curved arm ladder and the curved arm component have an included angle.

[0056] Therefore, the movable ladder and the cloud ladder body can be seamlessly connected through the linkage assembly. The articulated arm ladder body, movable ladder, linkage assembly and cloud ladder body form a continuous passage without breaks, eliminating the risk of falling out and helping to enhance the overall safety performance of the connecting arm structure.

[0057] The following description, in conjunction with the accompanying drawings, illustrates the solutions of the embodiments of this application.

[0058] like Figure 1 and Figure 2 As shown, this application embodiment provides a connecting arm structure for a climbing device, including a ladder arm 100 and a ladder body 101, a curved arm component 200, a curved arm ladder assembly 300, a connecting rod assembly 400, and a rotation drive assembly 500 connected to the ladder arm 100.

[0059] The articulated ladder assembly 300 includes an articulated ladder body 310 and a movable ladder 320 slidably mounted on the articulated ladder body 310. One end of the articulated arm 200 is hinged to the ladder arm 100, and the other end of the articulated arm 200 and the articulated ladder body 310 are both used to connect to the working bucket 800 of the climbing equipment. One end of the connecting rod assembly 400 is hinged to the ladder body 101, and the other end is hinged to the movable ladder 320. The rotation drive assembly 500 is connected to the articulated ladder body 310.

[0060] The articulated ladder body 310 is configured such that, when the articulated arm 200 rotates, it is driven by the rotation drive assembly 500 to rotate relative to the articulated arm 200, so that the movable ladder 320 extends or retracts relative to the articulated ladder body 310; when the movable ladder 320 retracts relative to the articulated ladder body 310, the articulated ladder body 310 and the articulated arm 200 are arranged in parallel; when the movable ladder 320 extends relative to the articulated ladder body 310, the articulated ladder body 310 and the articulated arm 200 have an included angle.

[0061] As can be seen from the above description, in the connecting arm structure of this application embodiment, the articulated ladder body 310 and the movable ladder 320 slidably disposed on the articulated ladder can form a telescopic movement. When the articulated arm 200 rotates, the rotation drive component 500 drives the articulated ladder body 310 to rotate relative to the articulated arm 200, thereby avoiding interference between the connecting rod assembly 400 and the ladder body 101 caused by the deformation of the movable ladder 320 during the telescopic movement. While changing the hinge angle of the connecting rod assembly 400, it ensures that the movable ladder 320 and the ladder body 101 form a continuous passage path without breaks, eliminating the risk of falling into the air, and helping to enhance the overall safety performance of the connecting arm structure and the climbing equipment.

[0062] like Figure 3 As shown, the rotary drive assembly 500 in this embodiment includes a crank arm support 510 and a rotary drive 520.

[0063] One end of the articulated arm support 510 is connected to the articulated arm ladder body 310. The rotary drive 520 is located at the end of the articulated arm support 510 away from the articulated arm ladder. The rotary drive 520 includes a mounting base 521 and a rotary drive end 522 connected to the mounting base 521. The mounting base 521 is connected to the articulated arm 200, and the rotary drive end 522 is connected to the articulated arm support 510.

[0064] One end of the aforementioned curved arm support 510 is connected to the curved arm ladder body 310, while the other end is not directly connected to the curved arm 200, but is indirectly connected to the curved arm 200 through the rotary drive 520. Thus, when the curved arm support 510 is driven to rotate by the rotary drive 520, it can cause the curved arm ladder body 310 to tilt relative to the curved arm 200.

[0065] Specific examples Figure 5 As shown, the articulated arm support 510 includes a main rod 511, a secondary rod 512 and at least two support rods 513. One end of the main rod 511 is rotatably connected to the articulated arm 200 via a rotary drive 520. The other end of the main rod 511 is connected to at least two support rods 513 via the secondary rod 512. At least two support rods 513 are connected to the articulated arm ladder body 310.

[0066] like Figure 1 and Figure 5As shown, in the aforementioned curved arm support 510, the main rod 511, the secondary rod 512, and the support rod 513 can be made of square steel tubing. The main rod 511 and the secondary rod 512 are welded together perpendicularly, and the secondary rod 512 is welded together perpendicularly with at least two support rods 513. The main rod 511, the secondary rod 512, and the at least two support rods 513 together form a "Y"-shaped structure, and the curved arm ladder body 310 is supported by at least two support rods 513.

[0067] Figure 5 In the process, the main rod 511 and the curved arm component 200 can be connected by bolts that pass through both of them, and the support rod 513 and the curved arm ladder body 310 can be connected by welding or by fasteners that pass through both of them.

[0068] As an alternative implementation, the support rods 513 can be three or other numbers. The length of the support rods 513 is not shorter than the width of the articulated ladder body 310, and the number of support rods 513 can be flexibly set according to the length of the articulated ladder body 310.

[0069] The main rod 511 bears the tensile and compressive forces in the axial direction of the curved arm component 200 and the curved arm ladder body 310. At least two support rods 513 distribute the load to different anchoring points of the curved arm ladder body 310, thereby avoiding the stress concentration problem at the connection point that is easily caused by the direct connection between the curved arm component 200 and the curved arm ladder body 310. In addition, the at least two support rods 513 and the main rod 511 together form an approximately triangular connection structure, which further improves the connection strength between the curved arm support component 510 and the curved arm ladder body 310. As shown in the figure, in this embodiment, a mounting bracket 211 is provided on the side of the curved arm component 200 facing the curved arm support component 510, and the mounting bracket 211 is connected to the mounting base 521.

[0070] The aforementioned mounting bracket 211 is a rectangular groove-shaped bracket. The mounting bracket 211 can be directly welded and fixed to the side wall of the crank arm component 200, or it can be bolted to the side wall of the crank arm component 200 via a mounting plate. Here, the mounting base 521 of the rotary drive component 520 is fitted into the groove formed by the mounting bracket 211, and the rotary drive end 522 is fastened to the crank arm support component 510 via bolts that pass through both. When the rotary drive component 520 is rotated, the rotary drive end 522 of the rotary drive component 520 drives the crank arm support component 510 to rotate relative to the crank arm component 200.

[0071] It should be noted that the rotary drive 520 in this embodiment can be adopted. Figure 4The swing cylinder in the example adopts the swing engineering spiral cylinder used in related technologies for aerial work equipment, such as the CY3 series spiral swing cylinder produced by Chiyu Hydraulic Equipment Co., Ltd. As long as it can be installed on the boom support 510 to drive the boom support 510 to rotate relative to the boom 200.

[0072] As an alternative implementation, the rotary drive 520 can also be a rotary stepper motor. The rotary stepper motor adopts the stepper motor component in the related technology. The mounting end (i.e. the fixed end) of the rotary stepper motor is fixed on the crank arm 200. The rotary drive end 522 of the rotary stepper motor is connected to the crank arm support 510 through a coupling so that the rotary stepper motor drives the crank arm support 510 to rotate relative to the crank arm 200.

[0073] As an alternative implementation, the rotary drive member 520 can also be fixed to one end of the curved arm support member 510 facing the curved arm ladder body 310. That is, the curved arm support member 510 is fixedly connected to the curved arm member 200, and the curved arm support member 510 is indirectly connected to the curved arm ladder body 310 through the rotary drive member 520. As long as the rotary drive member 520 can drive the curved arm ladder body 310 to rotate relative to the curved arm member 200, it is acceptable.

[0074] In some embodiments, the connecting arm structure of the climbing equipment also includes a plurality of angle detection components 530 and adjustment components 540.

[0075] Multiple angle detection components 530 are respectively disposed on the articulated arm 200, the ladder arm 100, and the articulated arm support 510; the control component 540 is connected to the multiple angle detection components 530 and the rotation drive component 520. The control component 540 is configured to control the rotation drive component 520 to rotate according to the angle data of the multiple angle detection components 530, so that the articulated ladder body 310 rotates synchronously relative to the articulated arm 200 when the articulated arm 200 rotates.

[0076] The angle detection component 530 can be a tilt sensor from related technologies. The installation position of the angle detection component 530 on each component can be adjusted accordingly, as long as it can detect the tilt angle state of the articulated boom 200, the ladder arm 100, and the articulated boom support 510. The control component 540 can be a programmable logic controller (PLC) from related technologies.

[0077] like Figure 6As shown, by adjusting the rotation of the rotary drive component 520, when the curved arm component 200 rotates relative to the ladder arm 100, the control component 540 adjusts the rotation of the rotary drive component 520 according to the rotation angle of the curved arm component 200 and the ladder arm 100, so that the curved arm ladder body 310 tilts and shifts relative to the curved arm component 200 in sync with the rotation of the curved arm component 200, ensuring a seamless connection between the movable ladder 320 and the connecting rod assembly 400 without interference when the ladder 320 extends or retracts relative to the curved arm ladder body 310.

[0078] Of course, the control action of the control component 540 on the rotary drive component 520 needs to be determined based on factors such as the length of the linkage assembly 400, the tilt angle of the curved arm component 200, and the extension length of the movable ladder 320 relative to the curved arm ladder body 310. For different implementation scenarios, the rotation angle of the rotary drive component 520 is also different. Therefore, in this embodiment, the control component 540 on the rotation control of the rotary drive component 520 is not absolutely limited, and can be set according to the actual assembly scenario.

[0079] like Figure 2 As shown, the linkage assembly 400 in this embodiment includes two parallel connecting rods 410, with at least two step rods 420 spaced apart between the two connecting rods 410. One end of the connecting rod 410 is hinged to the end of the movable ladder 320 through a common pivot, and the other end of the connecting rod 410 is hinged to the end of the ladder body 101 through a common pin.

[0080] The aforementioned linkage assembly 400 serves as a transfer part connecting the movable ladder 320 and the ladder body 101. The step bar 420 of the linkage assembly 400 serves as a step, and a handle can be installed on the connecting rod 410 to facilitate the climber's assistance.

[0081] like Figure 3 As shown, in some embodiments, the articulated boom 200 includes an articulated boom body 210, a first reinforcing plate 220, and a second reinforcing plate 230. The first reinforcing plate 220 is connected to the articulated boom body 210, and the articulated boom body 210 is hinged to the ladder arm 100 through the first reinforcing plate 220; the second reinforcing plate 230 is connected to the articulated boom body 210, and the articulated boom body 210 is hinged to the work bucket 800 through the second reinforcing plate 230.

[0082] The aforementioned articulated boom body 210 is a welded integral part. The cross-section of the articulated boom body 210 is polygonal, and the number of the first reinforcing plate 220 and the second reinforcing plate 230 can be flexibly set.

[0083] For example, there are two or more first reinforcing plates 220. The multiple first reinforcing plates 220 are attached to the side wall of the articulated arm body 210 and arranged parallel to each other. The first reinforcing plate 220 is provided with a first axle pin hole, and the corresponding end of the ladder arm 100 is provided with a second axle pin hole. The ladder arm 100 and the articulated arm body 210 are rotatably connected by axle pins that pass through the first axle pin hole and the second axle pin hole.

[0084] The number of second reinforcing plates 230 can be two or more. Multiple second reinforcing plates 230 are attached to the side wall of the crank arm body 210 and arranged parallel to each other. The second reinforcing plates 230 are provided with third shaft pin holes. The working bucket 800 is used to connect the crank arm body 210 to a balance arm 820 at one end. The end of the balance arm 820 is provided with a fourth shaft pin hole. The crank arm body 210 and the balance arm 820 are rotatably connected by a shaft pin that passes through the third shaft pin hole and the fourth shaft pin hole.

[0085] By setting the first reinforcing plate 220 and the second reinforcing plate 230, the articulated boom body 210 has a larger installation space and better structural strength, which facilitates the assembly of the articulated boom body 210 and the ladder arm 100, and the articulated boom body 210 and the counterweight arm 820, reduces the assembly difficulty, and helps to improve assembly efficiency.

[0086] It should be noted that in some embodiments, the first reinforcing plate 220 is also provided with an assembly position for mounting the leveling cylinder and the crank arm rotating cylinder. The assembly position may be a through hole provided on the first reinforcing plate 220, or other mounting platform that can mount the leveling cylinder and the crank arm rotating cylinder. This application embodiment does not make an absolute limitation on this.

[0087] The installation of the leveling cylinder and the boom rotating cylinder can refer to the leveling components and rotating components in the relevant technologies of aerial work equipment. The leveling cylinder is used to dynamically maintain the horizontal state of the working bucket 800, and the boom rotating cylinder is used to drive the boom component 200 to rotate relative to the ladder arm 100.

[0088] like Figure 7 As shown, in some embodiments, the articulated ladder body 310 is provided with a first mating member 311, and the movable ladder 320 is provided with a second mating member 321. The first mating member 311 and the second mating member 321 are slidably connected so that the articulated ladder body 310 and the movable ladder 320 are slidably connected.

[0089] Furthermore, the first mating part 311 is a slide rail, and the second mating part 321 is a slider that engages with the first mating part 311; or, the first mating part 311 is a slider, and the second mating part 321 is a slide rail for engaging with the first mating part 311.

[0090] For example, the movable ladder 320 includes two parallel irregularly shaped tubes, with three parallel anti-slip square tubes spaced apart on the two irregularly shaped tubes as steps. Each irregularly shaped tube is equipped with a handrail, and a slider is provided at the outer end of the irregularly shaped tube. The inner side of the curved arm ladder body 310 is provided with a slide extending along its own length direction. The two irregularly shaped tubes of the movable ladder 320 are embedded between the curved arm ladder body 310, and the movable ladder 320 and the curved arm ladder body 310 are slidably connected by the cooperation of the slider and the slide.

[0091] like Figure 8 and Figure 9 As shown, Figure 8 This is a schematic diagram of part of the aerial work platform in its retracted state. Figure 9 This is a schematic diagram of part of the structure of the climbing equipment in the unfolded state. In the retracted state, the articulated ladder body 310 and the articulated arm component 200 are in a relatively parallel state. The movable ladder 320 is located in the articulated ladder body 310 and does not extend out. The connecting rod assembly 400 can only rotate around its hinge point with the ladder body 101.

[0092] During the transition to the unfolded state, the articulated arm 200 rotates relative to the ladder arm 100 in the direction of the arc arrow, and the movable ladder 320 extends out of the articulated arm ladder body 310 in the direction of the straight arrow. At the same time, the rotation drive 520 is controlled by the control component 540 to gradually tilt the movable ladder body 310 relative to the articulated arm 200, so that the connecting rod assembly 400, the movable ladder body 310 and the movable ladder 320 always maintain a seamless connection without interference. This setting can also ensure that the movable ladder 320 and the ladder body 101 maintain a stable connection under different tilt angles of the articulated arm 200.

[0093] This application also provides a climbing device, including a work bucket 800 and a connecting arm structure from any of the above embodiments connected to the work bucket 800. Because it includes the connecting arm structure from any of the above embodiments, the climbing device possesses all the advantages of a connecting arm structure.

[0094] like Figure 10 As shown, in some embodiments, the climbing equipment also includes a turntable 600, on which a rotatable telescopic main arm 700 is provided. The telescopic main arm 700 is connected to a main arm ladder, and the telescopic main arm 700 is connected to the ladder arm 100 of the connecting arm structure.

[0095] The work bucket 800 is connected to the articulated arm 200 of the connecting arm structure via a balance arm 820. The work bucket 800 is provided with an inlet / outlet opening 810 for connecting the articulated arm ladder assembly 300. The lower end of the inlet / outlet opening 810 is connected to a rotatable flap 830. The flap 830 has an auxiliary plate extending toward the articulated arm ladder assembly 300. The auxiliary plate is used to overlap with the articulated arm ladder assembly 300.

[0096] The telescopic boom 700 is hinged to the turntable 600 via a pin. Both the telescopic boom 700 and the ladder arm 100 are driven to move in opposite directions by telescopic cylinders and luffing cylinders. The ladder arm corresponding to the telescopic boom 700 and the ladder assembly corresponding to the ladder arm 100 move synchronously with the movement of the two.

[0097] Specifically, the telescopic boom 700 is connected to the turntable 600 via a tail pin; the ladder arm 100 is connected to the telescopic boom 700 via a luffing cylinder, a connecting rod assembly 400, and a pin; the ladder arm 100 is connected to the articulated boom 200 via an articulated boom rotation cylinder and a pin; the articulated boom 200 is connected to the counterweight boom 820 via a pin; and the counterweight boom 820 is hinged to the work bucket 800.

[0098] When using aerial ladders for rescue, the flap 830 can be rotated 90° and extended by the auxiliary plate after the angle between the work bucket 800 and the articulated boom 200 is determined. The auxiliary plate overlaps with the articulated boom ladder body 310 to achieve a seamless connection between the articulated boom ladder and the work bucket 800, thereby improving safety.

[0099] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0100] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A connecting arm structure for a climbing device, characterized in that, include: The ladder arm and the ladder body connected to the ladder arm; The articulated boom assembly and the articulated boom ladder assembly include an articulated boom ladder body and a movable ladder slidably disposed on the articulated boom ladder body. One end of the articulated boom assembly is hinged to the ladder arm, and the other end of the articulated boom assembly and the articulated boom ladder body are both used to connect to the working bucket of the climbing equipment. The linkage assembly is hinged at one end to the ladder body and at the other end to the movable ladder; A rotary drive assembly is connected to the articulated ladder body; The articulated ladder body is configured such that, when the articulated arm rotates, it is driven by the rotation drive assembly to rotate relative to the articulated arm, so that the movable ladder extends or retracts relative to the articulated ladder body; when the movable ladder retracts relative to the articulated ladder body, the articulated ladder body and the articulated arm are arranged in parallel; when the movable ladder extends relative to the articulated ladder body, the articulated ladder body and the articulated arm have an included angle.

2. The connecting arm structure of the climbing equipment according to claim 1, characterized in that, The rotation drive assembly includes: The curved arm support component is connected at one end to the curved arm ladder body; A rotary drive component is disposed at one end of the curved arm support component away from the curved arm ladder body. The rotary drive component includes a mounting base and a rotary drive end connected to the mounting base. The mounting base is connected to the curved arm component, and the rotary drive end is connected to the curved arm support component.

3. The connecting arm structure of the climbing equipment according to claim 2, characterized in that, The crank arm component is provided with a mounting bracket on the side facing the crank arm support component, and the mounting bracket is connected to the mounting base.

4. The connecting arm structure of the climbing equipment according to claim 1, characterized in that, The linkage assembly includes two parallel connecting rods, with at least two treads spaced apart between the two connecting rods. One end of each connecting rod is hinged to the end of the movable ladder via a common pivot, and the other end of each connecting rod is hinged to the end of the ladder body via a common pin.

5. The connecting arm structure of the climbing equipment according to claim 2, characterized in that, Also includes: Multiple angle detection components are respectively disposed on the articulated boom, the ladder arm, and the articulated boom support; The control component is connected to the plurality of angle detection components and the rotation drive component. The control component is configured to control the rotation of the rotation drive component according to the angle data of the plurality of angle detection components, so that the curved arm ladder body rotates synchronously relative to the curved arm component when the curved arm component rotates.

6. The connecting arm structure of the climbing equipment according to claim 2, characterized in that, The articulated arm support includes a main rod, a secondary rod, and at least two support rods. One end of the main rod is rotatably connected to the articulated arm via the rotary drive component, and the other end of the main rod is connected to at least two support rods via the secondary rod. At least two support rods are connected to the articulated arm ladder body.

7. The connecting arm structure of the climbing equipment according to any one of claims 1 to 6, characterized in that, The articulated ladder body is provided with a first mating component, and the movable ladder is provided with a second mating component. The first mating component and the second mating component are slidably connected so that the articulated ladder body and the movable ladder are slidably connected.

8. The connecting arm structure of the climbing equipment according to claim 7, characterized in that, The first mating component is a slide rail, and the second mating component is a slider that engages with the first mating component; or, the first mating component is a slider, and the second mating component is a slide rail for engaging with the first mating component.

9. A climbing device, characterized in that, It includes a work bucket and a connecting arm structure of the climbing equipment as described in any one of claims 1 to 8 connected to the work bucket.

10. The climbing equipment according to claim 9, characterized in that, It also includes a turntable, on which a rotatable telescopic main arm is provided, the telescopic main arm is connected to a main arm ladder, and the telescopic main arm is connected to the ladder arm of the connecting arm structure of the climbing equipment. The work bucket is connected to the articulated arm of the connecting arm structure of the climbing equipment via a balance arm. The work bucket is provided with an inlet / outlet opening for connecting the articulated arm ladder assembly. A rotatable flap is connected to the lower end of the inlet / outlet opening. The flap has an auxiliary plate extending toward the articulated arm ladder assembly. The auxiliary plate is used to overlap with the articulated arm ladder assembly.

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