Quick disassembly and assembly structure for drag chain of overhead working truck

Abstract

The utility model discloses an overhead working truck drag chain rapid disassembly and assembly structure which comprises a rack of a long rod structure, and a movable assembly is arranged at one end of the rack so that the rack can move in an arm support; the rack is further provided with a jacking assembly which can jack a support at the end of the drag chain and keep the jacking action. The rack is further provided with a fixing assembly which is detachably connected with the tail of the arm support, and the rack is fixed in the moving process of the jacking assembly. The tow chain support is jacked through the jacking assembly, the other end of the tow chain is pushed, the rack can move in the arm frame, and the tow chain is disassembled and assembled. The structure has the functions of automatic jacking and real-time synchronous movement, the structure is supported below the drag chain in the dismounting and mounting process, the structure can be jacked and aligned to the mounting position, the structure can synchronously move along with the drag chain, dismounting and mounting of the drag chain in an arm frame are achieved, the mounting precision is guaranteed, and the quality and safety of an assembled product can be improved.

Description

Technical Field

[0001] This application relates to the field of installation aids technology, and more specifically, to a quick-assembly and disassembly structure for a drag chain of an aerial work platform. Background Technology

[0002] Spider-type aerial work platforms play a vital role in social production activities as essential tools for high-altitude operations. However, due to their compact boom structure and extremely limited internal space, the assembly gaps are typically only about 5mm, thus placing extremely high precision requirements on the installation and maintenance of internal components.

[0003] Existing cable chain structures are typically externally mounted or installed in the gaps between booms. However, due to the limited internal space of the boom, the assembly and disassembly of cable chains are extremely cumbersome and difficult. Especially during maintenance, it is often necessary to disassemble the entire boom, which not only increases workload and difficulty but may also damage the cable chain or other internal components. When the cable chain structure is installed inside the boom, due to weight and boom space constraints, the support at the front end of the cable chain naturally rests on the upper surface of the bottom cable chain square tube. Existing cable chain assembly and disassembly methods usually rely on temporary tools, assembling the internal cable chain support into the support slot inside the boom by prying it up and tapping the other end.

[0004] This method is not only time-consuming and labor-intensive, but it can also easily damage the cable chain or other internal parts. More seriously, if the worker's arm is trapped during the process of prying up the cable chain, improper operation could result in a significant safety hazard.

[0005] Therefore, there is an urgent need for a structure that allows for independent assembly and disassembly of the cable chain. This structure should allow the cable chain to be built into the boom for compact layout and protection of the cable chain and pipelines, while also enabling the cable chain to be disassembled and assembled as a whole without removing parts from the boom, thus facilitating independent installation and maintenance. Utility Model Content

[0006] To address the aforementioned technical problems, this application provides a novel cable chain installation device, which aims to enable independent installation and disassembly of the cable chain inside the boom. This achieves both a compact layout and protection of the cable chain and pipelines, while allowing for the overall disassembly and assembly of the cable chain without removing boom components, thus enabling independent installation and maintenance.

[0007] This application provides a quick assembly and disassembly structure for a drag chain of an aerial work platform. The specific technical solution is as follows: a frame with a long pole structure, and a movable component is provided at one end of the frame so that the frame can move inside the boom.

[0008] The frame is also equipped with a lifting assembly, which can lift the support at the end of the cable chain and maintain the lifting action.

[0009] The rack is further provided with a fixing assembly, which is detachably connected with the tail of the arm support, and the rack is fixed during movement of the jacking assembly;

[0010] The jacking assembly jacks up the drag chain support, pushes the other end of the drag chain, and thus the rack moves in the arm support to complete disassembly and assembly of the drag chain.

[0011] Preferably, the rack is internally provided with a push rod, which moves relative to the rack and transmits power to one end of the moving assembly to push the jacking assembly to jack up.

[0012] Preferably, the push rod is connected with the rack through a threaded pair, so that the push rod can transmit power to the jacking assembly.

[0013] Preferably, the push rod is provided with a hand wheel on the side away from the moving assembly, the hand wheel is sleeved on the outer surface of the push rod, and the push rod moves relative to the rack by rotating the hand wheel.

[0014] Preferably, one end of the push rod close to the moving assembly is fixed with the rack through a first locking nut, and the other end of the push rod away from the moving assembly is fixed with the hand wheel through a second locking nut.

[0015] Preferably, the jacking assembly specifically comprises a moving block, a first connecting rod, a second connecting rod, and a supporting block.

[0016] The moving block is movable relative to the rack and connected with one end of the first connecting rod, the other end of the first connecting rod is provided with the supporting block, one end of the second connecting rod is rotatably connected with the rack, and the other end is rotatably connected with the first connecting rod.

[0017] The first connecting rod is connected with the moving block and the supporting block through a mounting shaft, the second connecting rod is connected with the first connecting rod and the rack through a pin shaft, and the pin shaft and the mounting shaft are further provided with a snap spring.

[0018] Preferably, one end of the first connecting rod and the rack, which is provided with the moving assembly, is arranged at an acute angle.

[0019] Preferably, the fixing assembly specifically comprises a star-shaped handle and a positioning plate.

[0020] The positioning plate is clamped on the tail of the arm support, and the positioning plate is threadedly connected and fixed on the tail of the arm support through the star-shaped handle.

[0021] Preferably, the positioning assembly is detachably arranged on the rack.

[0022] As preferred, the moving assembly is specifically a roller.

[0023] The high-altitude operation vehicle drag chain quick dismounting structure provided by the utility model can realize the fixing or releasing of the drag chain in the installation groove, guarantee the installation precision, and improve the assembly product quality and safety.

[0024] Through the implementation of the utility model, the problems of low installation precision, difficult dismounting, and great safety hazards of the drag chain in the prior art can be effectively solved, the product production efficiency is greatly improved, and the product quality of the high-altitude operation vehicle is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0026] Figure 1 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0027] Figure 2 For Figure 1 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0028] Figure 3 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0029] Figure 4 For Figure 3 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0030] Figure 5 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0031] Figure 6 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0032] Figure 7 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0033] Figure 8 The utility model provides high-altitude operation vehicle drag chain quick dismounting structure jacking state main view structural schematic diagram for the embodiment of the utility model;

[0034] Figure 9 S2 step state diagram for the quick disassembly and assembly structure of the aerial work platform's drag chain;

[0035] Figure 10 S3 and S4 step state diagram for the quick disassembly and assembly structure of the aerial work platform's drag chain.

[0036] Reference signs

[0037] Quick disassembly and assembly structure of the aerial work platform's drag chain: 1, moving assembly; 2, roller shaft; 3, clasp spring; 4, first connecting rod; 5, support block; 6, pin shaft; 7, second connecting rod; 8, mounting shaft; 9, first locking nut; 10, moving slider; 11, push rod; 12, rack; 13, positioning plate; 14, star-shaped handle; 15, hand wheel; 16, second locking nut;

[0038] Drag chain structure: 17, fixing bolt; 18, drag chain groove; 19, two telescopic arm drag chains; 20, drag chain square tube; 21, support fixing bolt; 22, drag chain square tube support; 23, basic arm drag chain; 24, support;

[0039] Arm support structure: 25, three telescopic arms; 26, two telescopic arms; 27, one telescopic arm; 28, basic arm; 29, sliding structure; 30, telescopic structure; 31, support groove; 32, support tube. DETAILED DESCRIPTION

[0040] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] Furthermore, the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or an ordered sequence. Accordingly, features identified by "first", "second", etc. can include one or more of such features, either explicitly or implicitly.

[0044] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the present disclosure are merely used to illustrate the content disclosed in the present disclosure, to be understood and read by those skilled in the art, and do not have technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present disclosure, should still fall within the scope of the technical content disclosed by the present disclosure.

[0045] The present utility model is written in a progressive manner in this specific embodiment.

[0046] As shown in the drawings, Figures 5 to 7 As shown in the drawings, Figures 5 to 7 In the aerial work platform, the drag chain structure and the boom structure, which play an important telescopic role, include the following specific components:

[0047] As shown in the drawings, Figure 5 The drag chain structure includes the fixing bolt 17, the drag chain groove 18, the two telescopic arm drag chains 19, the drag chain square tube 20, the bracket fixing bolt 21, the drag chain square tube bracket 22, the basic arm drag chain 23, and the bracket 24.

[0048] Generally, the drag chain structure is assembled independently outside the boom structure, and then the whole drag chain structure is installed into the boom frame. The drag chain groove 18 is inserted into the support groove 31 of the three telescopic arms 25, and then the fixing bolt 17, the bracket fixing bolt 21, and the drag chain square tube bracket 22 are fixed to complete the installation of the drag chain structure. Similarly, when repairing, the fixing bolt 17, the bracket fixing bolt 21, and the drag chain square tube bracket 22 are removed first, and then the drag chain groove 18 is pulled out of the support groove 31 of the boom structure, so that the whole drag chain structure can be taken out of the boom structure for convenient maintenance and replacement.

[0049] As shown in the drawings, Figure 6 The boom structure includes the three telescopic arms 25, the two telescopic arms 26, the one telescopic arm 27, the basic arm 28, the sliding structure 29, the telescopic structure 30, the support groove 31, and the support tube 32.

[0050] The arm support structure is composed of three telescopic arms 25, two telescopic arms 26, one telescopic arm 27, a basic arm 28, a sliding structure 29 and a telescopic structure 30; first, the arm support structure is assembled into the sliding block structure 29, and pulleys and chains are installed, the telescopic structure 30 is assembled, and the arm support is sleeved in the arm support structure according to the position relationship between the arm support structure and the telescopic structure 30 in sequence from the basic arm 28, the one telescopic arm 27, the two telescopic arms 26 and the three telescopic arms 25 according to the position requirement in the drawing, so as to form a complete arm support structure.

[0051] However, in actual installation, when the arm support structure is installed, as shown in the figure, Figure 7 When the drag chain structure is put into the arm support structure, the support 24 at the front end of the two telescopic arms 19 is naturally supported on the upper surface of the drag chain square tube 20 due to the weight and the space limitation of the arm support structure, at this time, there is a large difference in height between the support 24 and the support groove 31 in the three telescopic arms 25, meanwhile, the support pipe 32 at the tail of the arm support structure affects the assembly space, and the tail of the arm support structure is about 500mm away from the support, the internal space of the arm support structure is narrow, and there is no suitable tool and operation space, so the drag chain structure cannot be smoothly fixed on the support groove 31 in the arm support structure.

[0052] Therefore, the utility model discloses a high-altitude operation vehicle drag chain quick dismounting structure, which is used for jacking and installing the drag chain in the arm support structure, and mainly comprises:

[0053] As shown in the figure, Figures 1 to 4 In this embodiment, in order to make the dismounting structure extend into the arm support structure to jack up the drag chain structure, a rack 12 of a long rod structure is provided in this embodiment, a moving assembly 1 is arranged at one end of the rack 12, so that the rack 12 can move in the arm support structure, and the rack 12 can be detachably inserted into the tail of the arm support structure, and then the drag chain structure in the rack 12 can be jacked up.

[0054] The rack 12 is also provided with a jacking assembly, which can jack up the support at the end of the drag chain structure and keep the jacking action, and in this embodiment, the support 24 at the front end of the two telescopic arms 19 is jacked up to keep the same height with the support groove 31 in the arm support structure.

[0055] The rack 12 is also provided with a fixing assembly, which is detachably connected with the tail of the arm support structure, and the rack 12 is fixed during the movement of the jacking assembly, and in this embodiment, the fixing assembly is matched with the support pipe in the arm support structure to play a positioning and fixing role.

[0056] In this embodiment, the drag chain is installed, the support of the drag chain is jacked up by the jacking assembly and kept, the fixing of the fixing assembly is released, the other end of the drag chain is pushed, the rack 12 can move in the arm support structure, and the drag chain assembly is moved to complete the dismounting of the drag chain.

[0057] Preferably, in this embodiment, the internal structure of the frame 12 is defined as follows: Figure 1 and Figure 3 As shown, in order to achieve the force transmission effect of the lifting component, a mechanical transmission method is adopted in this embodiment. The frame 12 is also provided with a push rod 11. Through the relative movement of the push rod 11 and the frame 12, the power is transmitted to the lifting component at one end of the moving component 1 to provide power for its lifting.

[0058] Furthermore, in this embodiment, the connection relationship between the push rod 11 and the frame 12 is further defined. In order to better transmit power mechanically, in this embodiment, the push rod 11 and the frame 12 are connected by a threaded pair. Specifically, the outer surface of the push rod 11 is provided with an external thread, and the frame 12 is provided with a corresponding internal thread. The transmission is achieved through the matching connection of the threaded pair, so that while the push rod 11 rotates and advances, it can transmit power to the lifting assembly.

[0059] Furthermore, to facilitate the operator in rotating the push rod 11 to transmit power, such as... Figures 1 to 4 As shown, in this embodiment, a handwheel 15 is provided at one end of the push rod 11 and the moving component 1 in the yard; in particular, as shown... Figure 4 As shown, the handwheel 15 is sleeved on the outer surface of the push rod 11. The handwheel 15 facilitates the operation of the operator. By rotating the handwheel 15, specifically clockwise in this embodiment, the operator can make the push rod 11 move relative to the frame 12 and raise the lifting assembly.

[0060] Preferably, the connection relationship of the push rod 11 described in this embodiment is further defined, such as... Figure 5 and Figure 7 As shown, the push rod 11 is fixed to the frame 12 at the end near the moving component 1 by a first locking nut 9; the push rod 11 is fixed to the handwheel 15 at the end away from the moving component 1 by a second locking nut 16.

[0061] Preferably, the specific structure of the lifting component in this embodiment is further defined, such as... Figure 1 and Figure 3 As shown, in this embodiment, the lifting assembly specifically includes: a movable slider 10, a first connecting rod 4, a second connecting rod 7, and a support block 5;

[0062] The movable slider 10 is movable relative to the frame 12. Specifically, in this embodiment, the movable slider 10 is connected to the push rod 11 and to one end of the first connecting rod 4; simultaneously, as Figures 1 to 3 As shown, the other end of the first connecting rod 4 is provided with the support block 5, which serves as a lifting component that contacts the support of the cable chain. One end of the second connecting rod 7 is rotatably connected to the frame 12, and the other end is rotatably connected to the first connecting rod 4, forming a linkage mechanism. Under the push of the push rod 11, the support block 5 moves in the height direction.

[0063] Meanwhile, to ensure smooth movement and structural stability in the linkage mechanism, in this embodiment, the first linkage 4 is connected to the moving block slider and the support block 5 via the mounting shaft 8; the second linkage 7 is connected to the first linkage 4 and the frame 12 via the pin 6, making their rotation smoother; and the pin 6 and the mounting shaft 8 are also provided with retaining springs 3, which keep the pin 6 and the mounting shaft 8 axially fixed to prevent axial movement.

[0064] Furthermore, the direction of movement of the lifting assembly is further defined, such as... Figure 1 and Figure 3 As shown, in this embodiment, the first connecting rod 4 is designed to be inclined at an angle to the frame 12. In order to better lift the support of the cable chain assembly, when the first connecting rod 4 and the end of the frame 12 equipped with the moving component 1 are arranged at an acute angle, less power is required for the lifting component, and the lifting structure is safer and more robust.

[0065] Preferably, in this embodiment, the specific structure of the fixing component is further defined as follows: Figure 1 As shown, the specific structure of the fixing component includes: a star-shaped handle 14 and a positioning plate 13;

[0066] The positioning plate is snapped onto the tail of the boom. The positioning plate is threadedly fixed to the tail of the boom via the star handle 14. The positioning plate 13 is snapped onto the support tube at the tail of the boom for positioning. Then, the star handle 14 is used to lock the positioning plate 13 into the threaded hole of the support tube at the tail of the boom, so that there is no relative movement between the frame 12 and the cable chain structure.

[0067] Furthermore, the installation method of the fixing component is further defined to achieve cable chain structure installation for different boom structures, such as... Figure 3 As shown, in this embodiment, the fixing component is detachably mounted on the frame 12 to accommodate the support tube 32 at the tail of different boom structures, which facilitates positioning.

[0068] As preferred, in the present embodiment, the moving assembly 1 is further limited as Figure 1 As shown in the drawings, in the present embodiment, the moving assembly 1 is specifically a roller, and the roller is connected with the rack 12 through a roller shaft 2, and specifically four groups of the roller are distributed and arranged at one end of the rack 12, facilitating the movement inside the arm structure. Figure 3

[0069] Meanwhile, the present application also provides an installation method of the aerial working truck drag chain quick dismounting structure provided in the present embodiment, and the specific installation method is illustrated in combination with Figures 8 to 10 As shown in the drawings, the specific installation method is as follows:

[0070] S1, the rack 12 is inserted from the tail of the arm structure to below the bracket 24 at the end of the drag chain structure, so that the fixing assembly is clamped in the tail of the arm structure and fixed;

[0071] S2, the jacking assembly is operated to rise, and the bracket 24 at the tail section of the drag chain mechanism is jacked to the height aligned with the supporting groove 31;

[0072] S3, the locking state of the fixing assembly is released, the other end of the drag chain structure is pushed, and the moving assembly 1 on the rack 12 slides along the drag chain square pipe 20, at this time, the jacking assembly continuously jacks the bracket 24 at the tail section of the drag chain structure, and the dismounting and moving of the drag chain structure are completed;

[0073] S4, after the dismounting action of the drag chain is completed, the jacking assembly is operated to descend, and the rack 12 is removed from the tail of the arm structure.

[0074] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.​

Claims

1. A quick dismounting structure of a high-altitude operation vehicle drag chain, which is detachably inserted into the tail of an arm structure, characterized in that, The utility model relates to a high-altitude operation vehicle drag chain quick dismounting structure, including: The frame of long rod structure is provided with a moving assembly at one end, so that the frame can move inside the arm frame; The frame is also provided with a jacking assembly, which can jack up the support at the end of the drag chain and maintain the jacking action; The frame is also provided with a fixing assembly, which is detachably connected with the tail of the arm frame and fixes the frame during the movement of the jacking assembly; By jacking up the support of the drag chain through the jacking assembly, the other end of the drag chain is pushed, so that the frame can move inside the arm frame, and the dismounting of the drag chain is completed.

2. The aerial work platform vehicle drag chain quick release structure of claim 1, wherein, The frame is provided with a push rod, which moves relative to the frame and transmits power to one end of the moving assembly to push the jacking assembly to jack up.

3. The aerial work platform vehicle drag chain quick disconnect structure of claim 2, wherein, The push rod and the frame are connected through a threaded pair, so that the push rod can transmit power to the jacking assembly.

4. The high-altitude operation vehicle drag chain quick dismounting structure according to claim 3, wherein The push rod is provided with a hand wheel on the side away from the moving assembly, the hand wheel is sleeved on the outer surface of the push rod, and the push rod moves relative to the frame by rotating the hand wheel.

5. The aerial work platform vehicle drag chain quick disconnect structure of claim 4, wherein, The end of the push rod close to the moving assembly is fixed with the frame through a first locking nut, and the end of the push rod away from the moving assembly is fixed with the hand wheel through a second locking nut.

6. The aerial work platform drag chain quick release structure of claim 1, wherein, The jacking assembly specifically includes a moving slider, a first connecting rod, a second connecting rod and a support block. The moving slider can move relative to the frame and is connected with one end of the first connecting rod, the other end of the first connecting rod is provided with the support block, one end of the second connecting rod is rotatably connected with the frame, and the other end is rotatably connected with the first connecting rod. The first connecting rod is connected with the moving slider and the support block through a mounting shaft, the second connecting rod is connected with the first connecting rod and the frame through a pin shaft, and the pin shaft and the mounting shaft are also provided with a snap spring.

7. The aerial work platform vehicle drag chain quick disconnect structure of claim 6, wherein, The first connecting rod and the frame are arranged at an acute angle at one end provided with the moving assembly.

8. The aerial work platform drag chain quick detach structure of claim 1, wherein, The fixing assembly specifically includes a star-shaped handle and a positioning plate. The positioning plate is clamped on the tail of the arm frame, and the positioning plate is threadedly connected and fixed on the tail of the arm frame through the star-shaped handle.

9. The aerial work platform drag chain quick release structure of claim 8, wherein, The positioning assembly is detachably arranged on the frame.

10. The aerial work platform drag chain quick release structure according to any one of claims 1 to 9, wherein, The moving assembly is specifically a roller.

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