Light foldable drainage wire traction mechanical arm

Abstract

The invention relates to the technical field of power grids, in particular to a light-weight foldable drainage wire traction mechanical arm which comprises a driving assembly, the driving assembly comprises a bottom plate and a servo motor arranged at the bottom end of the bottom plate, a box body is installed at the top end of the bottom plate, a power piece is installed on the side wall of the box body, and a sealing piece is installed at the top end of the box body; the folding assembly comprises a large arm arranged in the box body, a small arm is hinged to the large arm, a moving piece is installed at the bottom end of the large arm, a connecting rod piece connected with the top end of the large arm is installed in the small arm, linkage is conducted in a connecting rod mode, and therefore the structure is optimized, and the bearing requirement is met, and meanwhile the bearing capacity is improved. The mechanical arm mechanism can be folded, the occupied space is small after the mechanical arm mechanism is contracted, the mechanical arm mechanism is convenient to store and transport, the whole mechanical arm mechanism is free of sharp corners, induced current is avoided, and operation safety is improved.

Description

Technical Field

[0001] This invention relates to the field of power grid technology, and in particular to a lightweight, foldable drain line traction robotic arm. Background Technology

[0002] The guide wire traction robot arm connects the robot arm to the operating table via a traction wire. By controlling the tension and direction of the traction wire, precise control and operation of the robot arm can be achieved. This method can greatly reduce the skill requirements of the operator and improve production efficiency and product quality.

[0003] In substation environments, pulling and moving lead wires is a critical yet dangerous task. Traditional pulling methods typically rely on manual operation, which is not only inefficient but also increases the safety risks for workers. Although some robotic arms are used for such tasks, their overall structure contains sharp corners, which can easily generate point discharges in the substation environment. This could damage the robotic arm during operation, preventing it from successfully completing the pulling task. Furthermore, some robotic arms have complex drive systems, leading to increased weight and hindering transportation and storage. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Given that the above-mentioned robotic arm has sharp corners in its overall structure, which can easily cause tip discharge in a substation environment, and that the robotic arm's drive system is relatively complex, leading to increased weight and difficulties in transportation and storage, this invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a lightweight, foldable drain line traction robotic arm.

[0007] To solve the above technical problems, the present invention provides the following technical solution: a lightweight foldable drainage line traction robotic arm, comprising a drive assembly, including a base plate, a servo motor disposed at the bottom end of the base plate, a box body mounted on the top end of the base plate, a power component mounted on the side wall of the box body, and a sealing component mounted on the top end of the box body;

[0008] The folding assembly includes a large arm disposed inside the box body, a small arm hinged to the large arm, a movable component installed at the bottom end of the large arm, a connecting rod connected to the top end of the large arm installed inside the small arm, and a clamping claw installed at the end of the small arm.

[0009] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the power component includes a stepper motor disposed at the top of the base plate, a lead screw is installed at the output end of the stepper motor, a threaded flange is sleeved on the side wall of the lead screw, and a connecting plate is installed on the side wall of the threaded flange.

[0010] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the power component further includes a push rod disposed at the end of the connecting plate, the end of the push rod extending through the box body into the interior of the sliding plate, and a sliding block is installed on the side wall of the push rod.

[0011] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the power component further includes a buckle disposed at the end of the sliding plate, a limiting plate is installed at the end of the sliding plate away from the buckle, and the push rod passes through the limiting plate, and the buckle is fixed to the box body in a snap-fit ​​manner.

[0012] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the sealing element includes a lower pressure plate disposed inside the housing, and movable blocks are installed at both ends of the lower pressure plate, wherein a rack plate is installed at the end of one of the movable blocks.

[0013] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the sealing element further includes a sealing cover disposed at the top of the box body, a hinge shaft is installed on the side wall of the sealing cover, a torsion spring is sleeved on the side wall of the hinge shaft, one end of the torsion spring is connected to the hinge shaft, and the end of the torsion spring away from the hinge shaft is connected to the box body.

[0014] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the sealing element further includes a toothed block disposed on the side wall of the hinge shaft, the toothed block matching the rack plate, and the lower pressure plate being slidably connected to the box body.

[0015] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the moving part includes a first connecting rod hinged to the top of the sliding block, a crossbar is installed at the end of the first connecting rod away from the sliding block, and the two ends of the crossbar are connected to the upper arm.

[0016] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the connecting rod includes a second connecting rod disposed at the top end of the arm, a third connecting rod installed at the end of the second connecting rod, and a fourth connecting rod installed at the end of the third connecting rod away from the second connecting rod.

[0017] As a preferred embodiment of the lightweight foldable drainage line traction robotic arm of the present invention, the connecting rod further includes a sliding block disposed between the third connecting rod and the fourth connecting rod, and the end of the fourth connecting rod away from the third connecting rod is connected to the forearm.

[0018] The beneficial effects of this invention are as follows: The linkage mechanism of this invention optimizes the structure, minimizing the use of motors while meeting load-bearing requirements, thus reducing the weight of the system and making it more suitable for high-altitude operations. Furthermore, the foldable robotic arm mechanism occupies little space when retracted, facilitating storage and transportation. All necessary movements are achieved through a bottom servo motor and a middle stepper motor, simplifying the drive system and improving ease of operation and efficiency. The overall design without sharp corners avoids the generation of induced current, improving operational safety. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a lightweight, foldable, drain line-traction robotic arm.

[0021] Figure 2 This is an overall top view of a lightweight, foldable drain line traction robotic arm.

[0022] Figure 3 This is a schematic diagram of the folding component structure of a lightweight, foldable, drain line-traction robotic arm.

[0023] Figure 4 This is a schematic diagram of the disassembled structure of a lightweight, foldable, drain line-traction robotic arm.

[0024] Figure 5 This is a schematic diagram of the sealing structure of a lightweight, foldable, drain line-driven robotic arm.

[0025] Figure 6 for Figure 5 Enlarged view of point A in the image.

[0026] Figure 7 This is a schematic diagram of the overall structure of a lightweight, foldable, drain line-traction robotic arm after it has been folded and stored.

[0027] Figure 8 This is a schematic diagram of the arc of the linkage structure of a lightweight, foldable, drain line-traction robotic arm.

[0028] Figure label:

[0029] 100. Drive assembly; 101. Base plate; 102. Servo motor; 103. Housing; 104. Power component; 104a. Stepper motor; 104b. Lead screw; 104c. Threaded flange; 104d. Connecting plate; 104e. Push rod; 104f. Sliding plate; 104g. Sliding block; 104h. Snap fastener; 104i. Limiting plate; 105. Seal; 105a. Lower pressure plate; 105b. Moving block; 105c. Rack plate; 105d. Sealing cover; 105e. Hinge shaft; 105f. Torsion spring; 105g. Tooth block;

[0030] 200. Folding assembly; 201. Upper arm; 202. Lower arm; 203. Moving part; 203a. First connecting rod; 203b. Crossbar; 204. Linkage member; 204a. Second connecting rod; 204b. Third connecting rod; 204c. Fourth connecting rod; 204d. Sliding block; 205. Clamping claw. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0035] Example 1

[0036] Reference Figures 1-3This is the first embodiment of the present invention. This embodiment provides a lightweight foldable drainage line traction robotic arm, including a servo motor 102 driving the base plate 101 to rotate, while the sealing member 105 and the box body 103 are linked with the folding assembly 200 to store the folding assembly 200.

[0037] Specifically, the drive assembly 100 includes a base plate 101 and a servo motor 102 located at the bottom of the base plate 101. The output end of the servo motor 102 is connected to the base plate 101. A housing 103 is mounted on the top of the base plate 101. A power component 104 is mounted on the side wall of the housing 103. The power component 104 drives the folding assembly 200 inside the housing 103 to move. A sealing component 105 is mounted on the top of the housing 103. When the folding assembly 200 is folded up, it generates downward pressure, causing the sealing component 105 to deflect and thus seal the housing 103. When the folding assembly 200 is unfolded, there is no pressure to fold up, and the sealing component 105 is opened by the elastic force of the torsion spring 105f.

[0038] Furthermore, the power component 104 includes a stepper motor 104a mounted on the top of the base plate 101. The stepper motor 104a is mounted on the side wall of the housing 103. A lead screw 104b is mounted on the output end of the stepper motor 104a. A threaded flange 104c is fitted on the side wall of the lead screw 104b. The thread on the lead screw 104b matches the thread on the inner wall of the threaded flange 104c. A connecting plate 104d is mounted on the side wall of the threaded flange 104c. The threaded flange 104c is connected to the push rod 104e through the connecting plate 104d.

[0039] Furthermore, the power component 104 also includes a push rod 104e disposed at the end of the connecting plate 104d. The end of the push rod 104e extends through the housing 103 into the interior of the sliding plate 104f, wherein the sliding plate 104f is slidably connected to the housing 103, and a sliding block 104g is installed on the side wall of the push rod 104e, and the sliding block 104g matches the groove in the sliding plate 104f.

[0040] Furthermore, the power component 104 also includes a buckle 104h disposed at the end of the sliding plate 104f, wherein the buckle 104h is inserted into the box body 103 to fix the sliding plate 104f, and a limiting plate 104i is installed at the end of the sliding plate 104f away from the buckle 104h. The limiting plate 104i is used to prevent the sliding block 104g from disengaging from the groove in the sliding plate 104f, so the lead screw 104b does not need to be provided with a limiting structure, and the push rod 104e passes through the limiting plate 104i. The buckle 104h is fixed to the box body 103 in a snap-fit ​​manner.

[0041] Operation process: When using this device, first connect the base plate 101 to the aerial work platform, then work in conjunction with the main robotic arm to accurately and efficiently complete the disassembly and reassembly of the guide wire. The servo motor 102 enables the folding assembly 200 to rotate over a wide range, significantly increasing its working range and giving it high flexibility. The upper part of the base plate 101 is connected to the boom 201 via a hinge on the sliding block 104g, allowing the boom 201 to unfold and fold smoothly. The push rod 104e is driven by the stepper motor 104a to perform linear motion, pushing the boom 201 out of the housing 103 for operation. When the folding assembly 200 is not in use, it is retracted. When the device is installed, the stepper motor 104a drives the lead screw 104b to rotate, and then the threaded flange 104c drives the connecting plate 104d to move. While the connecting plate 104d is moving, it can drive the push rod 104e to move. The push rod 104e drives the sliding block 104g to move in the sliding plate 104f, thereby driving the folding assembly 200 to fold and move into the box 103. When the sliding block 104g moves to the bottom, its pulling force can drive the sliding plate 104f to move, so that the buckle 104h in the sliding plate 104f disengages from the slot in the box 103, indicating to the user that the device has been folded.

[0042] Example 2

[0043] Reference Figures 5-6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the sealing member 105 is used to store the folding assembly 200, and the sealing cover 105d is hinged to the box body 103 through the hinge shaft 105e.

[0044] Specifically, the seal 105 includes a lower pressure plate 105a disposed inside the housing 103, with movable blocks 105b installed at both ends of the lower pressure plate 105a, and a rack plate 105c installed at the end of one of the movable blocks 105b.

[0045] Furthermore, the sealing element 105 also includes a sealing cover 105d disposed at the top of the housing 103. A hinge shaft 105e is installed on the side wall of the sealing cover 105d. A torsion spring 105f is sleeved on the side wall of the hinge shaft 105e. One end of the torsion spring 105f is connected to the hinge shaft 105e, and the end of the torsion spring 105f away from the hinge shaft 105e is connected to the housing 103. The sealing cover 105d opens automatically by the energy stored in the torsion spring 105f.

[0046] Furthermore, the seal 105 also includes a toothed block 105g disposed on the side wall of the hinge shaft 105e, the toothed block 105g matching the rack plate 105c, and the lower pressure plate 105a slidingly connected to the box body 103.

[0047] The rest of the structure is the same as in Example 1.

[0048] Operation Process: When using this device, first connect the base plate 101 to the aerial work platform, then work in conjunction with the main robotic arm to accurately and efficiently complete the disassembly and reassembly of the guide wire. The servo motor 102 enables the folding assembly 200 to rotate over a wide range, significantly increasing its working range and giving it high flexibility. The upper part of the base plate 101 is connected to the boom 201 via a hinge on the sliding block 104g, allowing the boom 201 to unfold and fold smoothly. The push rod 104e is driven by the stepper motor 104a to perform linear motion, pushing the boom 201 out of the housing 103 for operation. When the folding assembly 200 is not in use and is being stored, the stepper motor 104a is started to drive the lead screw 104b to rotate, and then the threaded flange 104c drives the connecting plate 104d to move. The connecting plate 104d moves simultaneously with the push rod 104e, thus pushing the push rod 104e to move. The sliding block 104g moves within the sliding plate 104f, causing the folding assembly 200 to fold and move into the box 103. When the sliding block 104g reaches its bottom position, its pulling force moves the sliding plate 104f, disengaging the latch 104h from the box 103 slot, indicating to the user that the device is folded. During folding, the folding assembly 200 generates downward pressure, which applies pressure to the pressure plate 105a. This pressure causes the rack plate 105c to move, rotating the toothed block 105g on the hinge shaft 105e. The rotating hinge shaft 105e then rotates the sealing cover 105d, sealing the box 103. This allows for easy storage and subsequent disassembly and transportation. The folding assembly 200 is stored in the box 103 as follows: Figure 7 As shown.

[0049] Example 3

[0050] Reference Figures 2-4 and Figures 7-8 This is the third embodiment of the present invention. The difference between this embodiment and the previous embodiments is that the upper arm 201 and the lower arm 202 are connected to each other by hinges to realize the folding and unfolding of the lower arm 202. The upper arm 201 also includes a sliding block 204d, which is connected to the third connecting rod 204b and the fourth connecting rod 204c by hinges. When the second connecting rod 204a rotates and moves, the entire lower arm 202 can be flexibly folded or unfolded.

[0051] Specifically, the folding assembly 200 includes a large arm 201 disposed inside the box body 103, a small arm 202 hinged to the large arm 201, a movable part 203 installed at the bottom end of the large arm 201, a connecting rod 204 connected to the top end of the large arm 201 installed inside the small arm 202, and a clamping claw 205 installed at the end of the small arm 202.

[0052] Furthermore, the movable component 203 includes a first connecting rod 203a hinged to the top of the sliding block 104g. A crossbar 203b is installed at the end of the first connecting rod 203a away from the sliding block 104g, and both ends of the crossbar 203b are connected to the upper arm 201.

[0053] Furthermore, the connecting rod 204 includes a second connecting rod 204a disposed at the top end of the boom 201, a third connecting rod 204b installed at the end of the second connecting rod 204a, and a fourth connecting rod 204c installed at the end of the third connecting rod 204b away from the second connecting rod 204a.

[0054] Furthermore, the connecting rod 204 also includes a sliding block 204d disposed between the third connecting rod 204b and the fourth connecting rod 204c. The end of the fourth connecting rod 204c away from the third connecting rod 204b is connected to the forearm 202. When the robotic arm is extended, its first connecting rod 203a can drive the sliding block 204d on the upper arm 201 to slide through the push rod 104e. When the sliding block 204d moves, it drives the fourth connecting rod 204c to move upward towards the extension of the forearm 202, thereby driving the third connecting rod 204b to move upward at the same time. The first connecting rod 203a, the third connecting rod 204b, and the fourth connecting rod 204c have a structure that is wide at both ends and arc-shaped in the middle (e.g., Figure 8 As shown in Figure S), its arc-shaped structure can better disperse and resist external forces when subjected to stress, thereby improving the overall strength and rigidity of the connecting rod. At the same time, it allows the connecting rod to distribute stress more evenly when subjected to pressure or tension, reducing stress concentration and thus extending the service life of the connecting rod. The design of being thinner in the middle allows the connecting rod to reduce the overall weight while maintaining sufficient strength and rigidity. This helps to reduce the inertial force during mechanical movement and improve the dynamic response speed and efficiency of the machine. The arc-shaped structure of the connecting rod can better adapt to different motion trajectories during movement, reducing friction and vibration during movement. This helps to improve the smoothness and precision of the machine's movement, and reduce noise and wear. The design of being wide at both ends makes the connecting rod easier to operate during assembly and maintenance. The wide part can provide more contact surfaces and positioning points, making the assembly more accurate and firm. Furthermore, the second connecting rod 204a, the third connecting rod 204b, and the fourth connecting rod 204c are in a multi-segment hinged state, making the deployment of the forearm 202 more flexible.

[0055] The rest of the structure is the same as in Example 2.

[0056] Operation Process: When using this device, first connect the base plate 101 to the aerial work platform, then work in conjunction with the main robotic arm to accurately and efficiently complete the disassembly and reassembly of the guide wire. The servo motor 102 enables the folding assembly 200 to rotate over a wide range, significantly increasing its working range and giving it high flexibility. The upper part of the base plate 101 is connected to the boom 201 via a hinge on the sliding block 104g, allowing the boom 201 to unfold and fold smoothly. The push rod 104e is driven by the stepper motor 104a to perform linear motion, pushing the boom 201 out of the housing 103 for operation. When the folding assembly 200 is not in use and is being stored, the stepper motor 104a is started to drive the lead screw 104b to rotate, and then the threaded flange 104c drives the connecting plate 104d to move. While the connecting plate 104d is moving, it can also drive the push rod 104e to move. The movement of the lever 104e causes the sliding block 104g to move within the sliding plate 104f, thereby folding the folding assembly 200 and moving it into the box 103. During this movement, the sliding block 104g deflects the upper arm 201 via the first connecting rod 203a. The angle difference causes the sliding block 204d to slide within the groove of the upper arm 201, which in turn moves the second connecting rod 204a, the third connecting rod 204b, and the fourth connecting rod 204c, causing the forearm 202 to unfold. Then, the gripper 205 is activated to grip the object. This robotic arm, primarily through a linkage effect, reduces the use of motors and telescopic rods, thus lowering the overall weight and making the robotic arm lightweight. Furthermore, the entire folding assembly 200 has rounded edges, eliminating sharp corners and reducing the risk of tip discharge in substation environments, thus minimizing damage during operation.

[0057] When the sliding block 104g moves to the bottom, its pulling force can drive the sliding plate 104f to move, causing the buckle 104h in the sliding plate 104f to disengage from the slot in the box 103, indicating to the user that the device has been folded. When the folding component 200 is folded, it generates a downward pressure, which applies pressure to the pressure plate 105a. After the pressure plate 105a is pressed down, it drives the rack plate 105c to move, so that the rack plate 105c can drive the toothed block 105g on the hinge shaft 105e to rotate. The rotating hinge shaft 105e will then rotate the sealing cover 105d, sealing the box 103 through the sealing cover 105d, thus allowing the whole unit to be stored directly, facilitating later disassembly and transportation. The folding component 200 is stored in the box 103. Figure 7 As shown.

[0058] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0059] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0060] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A lightweight, foldable drainage line traction robotic arm, characterized in that: include, The drive assembly (100) includes a base plate (101), a servo motor (102) disposed at the bottom end of the base plate (101), a housing (103) mounted on the top end of the base plate (101), a power component (104) mounted on the side wall of the housing (103), and a sealing component (105) mounted on the top end of the housing (103). The folding assembly (200) includes a large arm (201) disposed inside the box body (103), a small arm (202) hinged to the large arm (201), a movable part (203) installed at the bottom end of the large arm (201), a connecting rod (204) connected to the top end of the large arm (201) installed inside the small arm (202), and a clamping claw (205) installed at the end of the small arm (202).

2. The lightweight, foldable drainage line traction robotic arm as described in claim 1, characterized in that: The power component (104) includes a stepper motor (104a) disposed at the top of the base plate (101). A lead screw (104b) is installed at the output end of the stepper motor (104a). A threaded flange (104c) is sleeved on the side wall of the lead screw (104b). A connecting plate (104d) is installed on the side wall of the threaded flange (104c).

3. The lightweight, foldable drainage line traction robotic arm as described in claim 2, characterized in that: The power component (104) also includes a push rod (104e) disposed at the end of the connecting plate (104d), the end of the push rod (104e) extending through the housing (103) into the interior of the sliding plate (104f), and a sliding block (104g) is installed on the side wall of the push rod (104e).

4. The lightweight, foldable drainage line traction robotic arm as described in claim 3, characterized in that: The power component (104) also includes a buckle (104h) disposed at the end of the sliding plate (104f). A limiting plate (104i) is installed at the end of the sliding plate (104f) away from the buckle (104h), and the push rod (104e) passes through the limiting plate (104i). The buckle (104h) is fixed to the box body (103) in a snap-fit ​​manner.

5. The lightweight, foldable drainage line traction robotic arm as described in claim 4, characterized in that: The sealing element (105) includes a lower pressure plate (105a) disposed inside the housing (103), and movable blocks (105b) are installed at both ends of the lower pressure plate (105a), and a rack plate (105c) is installed at the end of one of the movable blocks (105b).

6. The lightweight, foldable drainage line traction robotic arm as described in claim 5, characterized in that: The sealing element (105) further includes a sealing cover (105d) disposed at the top of the box body (103). A hinge shaft (105e) is installed on the side wall of the sealing cover (105d). A torsion spring (105f) is sleeved on the side wall of the hinge shaft (105e). One end of the torsion spring (105f) is connected to the hinge shaft (105e), and the end of the torsion spring (105f) away from the hinge shaft (105e) is connected to the box body (103).

7. The lightweight, foldable drainage line traction robotic arm as described in claim 6, characterized in that: The sealing element (105) also includes a toothed block (105g) disposed on the side wall of the hinge shaft (105e), the toothed block (105g) matching the rack plate (105c), and the lower pressure plate (105a) being slidably connected to the box body (103).

8. The lightweight, foldable drainage line traction robotic arm as described in claim 7, characterized in that: The movable component (203) includes a first connecting rod (203a) hinged to the top of the sliding block (104g). A crossbar (203b) is installed at the end of the first connecting rod (203a) away from the sliding block (104g). Both ends of the crossbar (203b) are connected to the upper arm (201).

9. The lightweight, foldable drainage line traction robotic arm as described in claim 8, characterized in that: The connecting rod (204) includes a second connecting rod (204a) disposed at the top end of the upper arm (201), a third connecting rod (204b) is installed at the end of the second connecting rod (204a), and a fourth connecting rod (204c) is installed at the end of the third connecting rod (204b) away from the second connecting rod (204a).

10. The lightweight, foldable drainage line traction robotic arm as described in claim 9, characterized in that: The connecting rod (204) further includes a sliding block (204d) disposed between the third connecting rod (204b) and the fourth connecting rod (204c), wherein the end of the fourth connecting rod (204c) away from the third connecting rod (204b) is connected to the forearm (202).

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