Group composite cross arm with maintenance position

Abstract

The utility model provides a grouped composite cross arm with maintenance positions, which comprises a core rod, insulating umbrella skirts and insulating sheaths, the insulating umbrella skirts and the insulating sheaths are integrally formed outside the core rod, and a plurality of insulating umbrella skirts are arranged between the two insulating sheaths; the insulating sheath is provided with a maintenance position, and the maintenance position is provided with a plurality of flexible columnar thin protrusions. The group composite cross arm disclosed by the utility model is provided with the maintenance position, the flexible columnar thin bulges are arranged at the maintenance position, and the flexible columnar thin bulges can increase the friction force of a contact surface and prevent feet or tools of maintenance personnel from slipping off in an operation process, so that the safety of maintenance work is improved. According to the grouped composite cross arm with the maintenance positions, through the arrangement of the maintenance positions, the problem that an existing composite material cross arm is complex in maintenance operation is effectively solved.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, and in particular to a grouped composite crossarm with maintenance positions. Background Technology

[0002] In the field of power equipment technology, crossarms, as an indispensable component of power lines, primarily bear the responsibility of supporting key components such as conductors and insulators, playing a crucial role in ensuring the safe and stable operation of power lines. With the continuous advancement of power technology and the expansion of power grids, the performance requirements for crossarms are also increasing. Especially in high-voltage, ultra-high-voltage, and even extra-high-voltage transmission lines, crossarms not only need sufficient mechanical strength to withstand the weight of the conductors and wind pressure, but also require excellent electrical insulation properties to reduce corona discharge and electromagnetic interference, thereby improving transmission efficiency. Furthermore, considering the needs of line maintenance and repair, the design of crossarms must also facilitate high-altitude operations, ensuring safety and convenience. To address these needs, composite material crossarms have emerged.

[0003] However, existing composite material crossarms often neglect the setting of maintenance positions in their design, which makes it necessary for workers to configure additional maintenance platforms, or to suspend workers on the power lines for maintenance, or to disassemble the equipment to be maintained and carry out maintenance on the ground when carrying out line and equipment maintenance, making maintenance operations complicated. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing composite material crossarms often neglect the design of maintenance positions, resulting in complex maintenance operations.

[0005] To address the aforementioned issues, this utility model provides a grouped composite crossarm with maintenance positions, comprising: a core rod and integrally formed insulating skirts and insulating sheaths disposed outside the core rod, with several insulating skirts disposed between the two insulating sheaths; maintenance positions are provided at the insulating sheaths, and several flexible columnar protrusions are provided at the maintenance positions.

[0006] The aforementioned solution features a dedicated maintenance position on the insulation sheath, providing a specialized maintenance area for personnel. This position is equipped with several flexible, columnar protrusions that increase friction on the contact surface, preventing personnel's feet or tools from slipping during operation and thus improving safety. Furthermore, these protrusions also serve as markers, allowing personnel to quickly and accurately locate the maintenance position during maintenance, avoiding blindly searching for work areas on the crossarm. This proposed modular composite crossarm with a maintenance position effectively solves the problem of complex maintenance operations associated with existing composite material crossarms.

[0007] To further improve the anti-slip properties of the maintenance area, it is preferable that the maintenance area has an anti-slip coating or an anti-slip sleeve.

[0008] To facilitate the installation of the anti-slip cover, preferably, the anti-slip cover includes: a cover body, a first connector located at a first end of the cover body, and a second connector located at a second end of the cover body, wherein the first connector and the second connector are plugged into each other for installation.

[0009] Furthermore, the first connector is provided with a first groove and / or a first protrusion, and a first protrusion and / or a first groove are provided on the second connector in correspondence with the first connector.

[0010] To further improve the firmness and reliability of the anti-slip sleeve after installation, preferably, both the first and second connectors are provided with fixing holes for passing through rivets or bolts.

[0011] To prevent the anti-slip sleeve from shifting, preferably, the surface of the insulating sleeve is provided with a number of second protrusions, and the inner wall of the anti-slip sleeve is provided with a number of second grooves that cooperate with the second protrusions.

[0012] To provide a more stable foothold for maintenance, it is preferable that when the anti-slip sleeve is installed on the insulating sleeve, the top of the anti-slip sleeve is set as a platform.

[0013] To improve the platform's friction performance, it is preferable to provide several flexible columnar fine protrusions on the platform.

[0014] Optionally, the mandrel has a cylindrical or square columnar structure.

[0015] The technical advantages of this application are as follows:

[0016] This application features a specially designed maintenance position on the insulation sheath, providing a dedicated maintenance area for personnel. This position is equipped with several flexible, columnar protrusions. These protrusions increase friction on the contact surface, preventing personnel's feet or tools from slipping during operation, thus improving safety. Furthermore, these flexible, columnar protrusions also serve as markers, allowing personnel to quickly and accurately locate the maintenance position during maintenance, avoiding blindly searching for work areas on the crossarm. This application's modular composite crossarm with a maintenance position effectively solves the problem of complex maintenance operations associated with existing composite material crossarms. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a grouped composite crossarm with maintenance positions in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of another grouped composite crossarm with maintenance positions in an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of an anti-slip protective sleeve in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of another group of composite crossarms with maintenance positions and a second protrusion as described in this application embodiment;

[0021] Figure 5 This is a schematic diagram of another anti-slip protective sleeve in an embodiment of this application;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Core rod;

[0024] 2. Insulating umbrella skirt;

[0025] 3. Insulating sheath;

[0026] 4. Anti-slip protective sleeve; 41. Protective sleeve body; 42. First connector; 43. Second connector; 401. First groove; 402. First protrusion; 403. Fixing hole; 404. Flexible columnar fine protrusion; 31. Second protrusion; 44. Second groove; 45. Platform. Detailed Implementation

[0027] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0028] The modular composite crossarm with maintenance positions described in this application aims to solve the technical problem of complex maintenance operations caused by the neglect of maintenance position settings in existing composite crossarms. This modular composite crossarm, by setting maintenance positions in specific locations, greatly facilitates maintenance work.

[0029] like Figure 1 The composite crossarm with maintenance positions described in this application includes at least a core rod 1, insulating sheds 2, and insulating sleeves 3. Both ends of the composite crossarm also include connecting hardware for connecting the transmission tower and transmission equipment. The core rod 1 serves as the internal support structure of the entire crossarm, providing the necessary mechanical strength to withstand certain external forces and ensure stability during operation. The insulating sheds 2 and insulating sleeves 3 are integrally formed on the outside of the core rod 1. This integral forming effectively improves the overall insulation performance and structural strength of the crossarm, reducing potential insulation failures and structural loosening problems caused by loose component connections.

[0030] Between the two insulating sheaths 3, several insulating skirts 2 are installed. The main function of the insulating skirts 2 is to increase the creepage distance, improve the insulation performance of the crossarm in harsh environments such as dampness and dirt, and prevent electrical faults such as flashover. A maintenance position is specially provided at the insulating sheath 3. The setting of the maintenance position is one of the key innovations of this application, providing maintenance personnel with a dedicated operating area, making maintenance work more convenient and efficient.

[0031] Several flexible, columnar protrusions 404 are installed at the maintenance position. These flexible, columnar protrusions 404 have multiple functions. First, from an anti-slip perspective, when maintenance personnel perform maintenance operations, their hands, feet, or tools will come into contact with the maintenance position, especially when stepping on it. The flexible, columnar protrusions 404 increase the friction of the contact surface, preventing the maintenance personnel's feet or tools from slipping during operation, thereby improving the safety of maintenance work. Second, the flexible, columnar protrusions 404 also serve a certain marking function. During maintenance, maintenance personnel can quickly and accurately locate the maintenance position by observing these protrusions, avoiding blindly searching for the operating position on the crossarm.

[0032] In actual operation, the composite crossarm with maintenance positions described in this application can perform its supporting and insulating functions normally, just like an ordinary crossarm. The core rod 1 bears various external forces acting on the crossarm, while the insulating skirt 2 and insulating sheath 3 effectively isolate the crossarm from the external electrical connection, ensuring the safe operation of the power system. When maintenance is required, maintenance personnel can quickly locate the maintenance position based on the markings on the flexible columnar protrusions 404. Standing at the maintenance position, maintenance personnel can easily perform various maintenance operations, such as inspecting transmission lines and installing bird-proofing equipment. Due to the presence of maintenance positions, maintenance personnel no longer need to configure additional maintenance platforms, suspend workers on transmission lines for maintenance, or disassemble the equipment to be maintained and perform maintenance on the ground, reducing maintenance time and labor intensity, and also lowering the risk of safety accidents caused by improper operation.

[0033] In summary, the modular composite crossarm with maintenance positions proposed in this application effectively solves the problem of complex maintenance operations of existing composite material crossarms through reasonable structural design and innovative maintenance position settings, and has significant technical advantages and practical value.

[0034] Based on the grouped composite crossarms with maintenance positions described in the above embodiments, this application also provides some preferred embodiments, wherein the specific form of the maintenance position is an anti-slip coating (not shown in the figure) or an anti-slip sleeve 4, which are described below in conjunction with the appendix. Figures 2-5 A detailed description is provided. In addition to the aforementioned provision of several flexible columnar protrusions 404, the maintenance position provided at the insulating sleeve 3 is, in some preferred embodiments, designed as an anti-slip coating or an anti-slip sleeve 4.

[0035] When the maintenance position uses an anti-slip coating, the coating evenly covers a specific area of ​​the insulating sleeve 3, forming the maintenance position. The anti-slip coating is typically made of a material with a high coefficient of friction, such as a rubber coating containing special anti-slip particles or a polyurethane coating. These materials not only provide excellent anti-slip performance, ensuring that maintenance personnel will not easily slip during operation and guaranteeing the safety of maintenance work, but also possess a certain degree of wear resistance and weather resistance, maintaining their anti-slip performance for extended periods under various harsh environmental conditions, reducing the problem of decreased anti-slip effect due to coating wear.

[0036] When the maintenance position uses an anti-slip sleeve 4, the anti-slip sleeve 4 is fitted onto the corresponding position of the insulating sleeve 3. The anti-slip sleeve 4 can be made of silicone rubber. Its surface is specially treated to form a regular texture (not shown in the figure) or a raised structure to increase friction. Compared with anti-slip coatings, the anti-slip sleeve 4 has the advantage of being replaceable. When the anti-slip sleeve 4 wears or is damaged due to long-term use, maintenance personnel can easily remove it and replace it with a new one, thus ensuring that the anti-slip performance of the maintenance position remains in good condition. In addition, the anti-slip sleeve 4 can also be designed with different colors or markings according to actual needs, so that maintenance personnel can more quickly and accurately identify the location of the maintenance position.

[0037] Both the anti-slip coating and the anti-slip sleeve 4, together with the core rod 1, the insulating skirt 2, and the insulating sleeve 3, constitute a complete grouped composite crossarm with maintenance positions. The core rod 1 provides stable mechanical support for the entire crossarm, the insulating skirt 2 and the insulating sleeve 3 ensure the insulation performance of the crossarm, while the anti-slip coating or anti-slip sleeve 4 provides a safe and convenient operating environment for maintenance work.

[0038] In practical applications, this type of composite crossarm with four maintenance positions and an anti-slip coating or protective sleeve is suitable for various power transmission and distribution systems. Its advantages are particularly evident in situations with high maintenance requirements and harsh environmental conditions, such as mountainous and coastal areas. By providing safe and convenient maintenance positions, it effectively reduces maintenance time and labor intensity, lowers the risk of safety accidents caused by improper maintenance operations, and provides strong support for the stable operation of the power system.

[0039] Based on the grouped composite crossarms with maintenance positions described in the above embodiments, this application further provides some preferred embodiments, wherein the anti-slip sleeve 4 used in the maintenance positions has a specific structure, which is described below in conjunction with the appendix. Figures 2-5 Please provide a detailed explanation.

[0040] like Figures 2-5As shown, the anti-slip sleeve 4 includes a sleeve body 41, a first connector 42, and a second connector 43. The sleeve body 41 is the main part of the anti-slip sleeve 4, and it is directly fitted onto the insulating sleeve 3 at the corresponding maintenance position. The sleeve body 41 is generally made of silicone rubber. The first connector 42 is located at the first end of the sleeve body 41, and the second connector 43 is located at the second end of the sleeve body 41. The first connector 42 and the second connector 43 are connected by a plug-in installation method, which is simple and easy to implement, facilitating the installation and removal of the anti-slip sleeve 4.

[0041] Specifically, the first connector 42 can be designed as a plug-in protrusion, which can be cylindrical, square, or other suitable shapes, and the size and shape of the plug-in protrusion ensure a tight fit with the second connector 43. The second connector 43 is correspondingly designed as a plug-in groove, and the internal size and shape of the plug-in groove match the plug-in protrusion of the first connector 42. When the anti-slip sleeve 4 needs to be fitted onto the insulating sleeve 3, the maintenance personnel only need to wrap the sleeve body 41 around the corresponding position of the insulating sleeve 3, and then insert the plug-in protrusion of the first connector 42 into the plug-in groove of the second connector 43 to complete the installation of the anti-slip sleeve 4. Conversely, when the anti-slip sleeve 4 needs to be replaced or removed, the maintenance personnel only need to gently pull the first connector 42 out of the second connector 43 to easily remove the anti-slip sleeve 4.

[0042] Based on the grouped composite crossarm with maintenance positions described in the above embodiments, this application further provides some preferred embodiments, in which the structure of the first connector 42 and the second connector 43 of the anti-slip sleeve 4 has been optimized. The following description, in conjunction with the appendix, further details the preferred embodiments. Figure 1 Please provide a detailed explanation.

[0043] like Figure 3 , Figure 5 As shown, in a preferred embodiment, the first connector 42 of the anti-slip sleeve 4 is provided with a first groove 401 and / or a first protrusion 402. Simultaneously, the second connector 43, corresponding to the first connector 42, is provided with a first protrusion 402 and / or a first groove 401. This design, through the cooperation of the groove and the protrusion, enhances the connection stability and reliability between the first connector 42 and the second connector 43.

[0044] Specifically, the following combinations exist:

[0045] Scenario 1: The first connector 42 has a first groove 401, and the second connector 43 has a first protrusion 402. When installing the anti-slip sleeve 4, align the first protrusion 402 on the second connector 43 with the first groove 401 on the first connector 42, and then perform the insertion operation. The first protrusion 402 can be tightly embedded in the first groove 401, forming a stable connection structure. This connection method can effectively prevent the first connector 42 and the second connector 43 from sliding or separating relative to each other when subjected to external forces, ensuring that the anti-slip sleeve 4 maintains a stable working state during maintenance.

[0046] Scenario 2: The first connector 42 has a first protrusion 402, and the second connector 43 has a first groove 401. Its working principle is similar to Scenario 1, except the positions of the protrusion and groove are reversed. During installation, the first protrusion 402 on the first connector 42 is inserted into the first groove 401 on the second connector 43, achieving a reliable connection. This design can be flexibly selected according to actual production and usage needs to meet different requirements for ease of installation and disassembly.

[0047] Scenario 3 (not shown in the figure): The first connector 42 is provided with both a first groove 401 and a first protrusion 402, and the second connector 43 is provided with a corresponding first protrusion 402 and a first groove 401. In this case, a more complex connection structure is formed between the first connector 42 and the second connector 43. The mutual cooperation of multiple grooves and protrusions further improves the connection strength and stability between the two. For example, one first protrusion 402 on the first connector 42 can be inserted into a corresponding first groove 401 on the second connector 43, while the first groove 401 on the first connector 42 can accommodate another first protrusion 402 on the second connector 43. This multi-position groove-protrusion cooperation method ensures that the anti-slip sleeve 4 can maintain a firm connection and is not prone to loosening when subjected to forces in various directions.

[0048] The tight fit between the groove and the protrusion effectively resists external forces such as tension and shear, preventing the anti-slip sleeve 4 from becoming loose during maintenance and thus improving the safety and reliability of the maintenance work. When installing the anti-slip sleeve 4, the first groove 401 and the first protrusion 402 serve a positioning function, allowing maintenance personnel to more accurately insert and install the first connector 42 and the second connector 43, reducing installation errors and improving installation efficiency. The more secure connection reduces wear and damage to components caused by loose connections, thereby extending the service life of the anti-slip sleeve 4 and lowering maintenance costs.

[0049] Based on the grouped composite crossarm with maintenance positions described in the above embodiments, this application further provides some optional embodiments. These embodiments further optimize the connection method between the first connector 42 and the second connector 43 of the anti-slip sleeve 4. The following description is in conjunction with the appendix. Figure 5 A detailed explanation is provided.

[0050] like Figure 5 As shown, in an optional embodiment, both the first connector 42 and the second connector 43 are provided with fixing holes 403. When the first connector 42 and the second connector 43 are plugged in and installed, the fixing holes 403 of the two can be aligned. The fixing hole 403 is usually circular in shape, and its diameter is determined according to the specifications of the rivet or bolt used to ensure that the rivet or bolt can pass through smoothly and achieve a firm connection.

[0051] During actual installation, after maintenance personnel initially connect the first connector 42 and the second connector 43 via a plug-in method, they pass rivets or bolts through the aligned fixing holes 403. If rivets are used, maintenance personnel can use a special riveting tool to pass one end of the rivet through the fixing hole 403 and then use the tool to deform the other end of the rivet to form a rivet head, thereby tightly riveting the first connector 42 and the second connector 43 together. The riveting method has the advantages of strong connection and good shock resistance, ensuring that the anti-slip sleeve 4 will not loosen the connection between the first connector 42 and the second connector 43 under various complex operating environments, such as when subjected to external forces such as vibration and impact, and will always maintain stable anti-slip performance. When using bolts, after the bolt passes through the fixing hole 403, a suitable nut is installed on the other end, and the nut is tightened using a wrench or other tools to ensure a tight connection between the first connector 42 and the second connector 43. Bolted connections are highly detachable, allowing maintenance personnel to quickly remove the bolts, take off the old anti-slip sleeve 4, and install a new one when the anti-slip sleeve 4 is worn or aged, greatly improving the efficiency of maintenance work.

[0052] The addition of rivets (not shown in the figure) or bolts makes the connection between the first connector 42 and the second connector 43 tighter and more secure, capable of withstanding greater tensile, shear, and torque forces. This effectively prevents the anti-slip sleeve 4 from falling off during maintenance due to loosening, ensuring the safety of maintenance personnel. The cooperation between the fixing hole 403 and the rivet or bolt ensures that the relative positions of the first connector 42 and the second connector 43 are fixed in all directions, preventing shaking or displacement. This provides a stable and reliable operating platform for maintenance work, improving the accuracy and quality of the work.

[0053] Based on the grouped composite crossarms with maintenance positions described in the above embodiments, this application further provides some preferred embodiments. These embodiments optimize the connection structure between the insulating sheath 3 and the anti-slip sheath 4. The following description, in conjunction with the appendix, further details the preferred embodiments. Figures 4-5 Detailed explanation.

[0054] like Figures 4-5 As shown, in a preferred embodiment, the surface of the insulating sleeve 3 is provided with a plurality of second protrusions 31. These second protrusions 31 are evenly distributed at the positions corresponding to the maintenance positions of the insulating sleeve 3, and their shapes can be cylindrical, square, trapezoidal, etc., and the specific shape can be selected according to actual needs and processing technology. The height and spacing of the second protrusions 31 are also designed to ensure good fit with the anti-slip sleeve 4, while not being too dense to affect the overall performance of the insulating sleeve 3. At the same time, the inner wall of the anti-slip sleeve 4 is provided with a plurality of second grooves 44 that mate with the second protrusions 31. The shape, size and position of the second grooves 44 completely correspond to the second protrusions 31 on the surface of the insulating sleeve 3, to ensure that when the anti-slip sleeve 4 is fitted on the insulating sleeve 3, the second protrusions 31 can be accurately embedded in the second grooves 44.

[0055] When the anti-slip sleeve 4 is installed onto the insulating sleeve 3, the anti-slip sleeve 4 is moved along the axial direction of the insulating sleeve 3, causing the second protrusion 31 on the surface of the insulating sleeve 3 to gradually enter the second groove 44 on the inner wall of the anti-slip sleeve 4. As the anti-slip sleeve 4 continues to move, the second protrusion 31 is completely embedded in the second groove 44, forming a tight fit.

[0056] The engagement of the second protrusion 31 and the second groove 44 effectively prevents the anti-slip sleeve 4 from sliding axially or rotating circumferentially on the insulating sleeve 3. When maintenance personnel operate, even if their feet, hands, or tools apply significant force to the anti-slip sleeve 4, the anti-slip sleeve 4 will remain firmly fixed on the insulating sleeve 3 without displacement, thus providing a stable operating platform for maintenance work.

[0057] Compared to a simple sleeve connection, the engagement of the second protrusion 31 and the second groove 44 increases the contact area and friction between the anti-slip sleeve 4 and the insulating sleeve 3, making the connection more reliable. This maintains a good connection even during long-term use, reducing safety hazards caused by loosening. The engagement of the second protrusion 31 and the second groove 44 also serves a positioning function. When installing the anti-slip sleeve 4, maintenance personnel can quickly and accurately place it onto the correct position of the insulating sleeve 3 based on the positions of the second protrusion 31 and the second groove 44, improving installation efficiency and accuracy.

[0058] Based on the grouped composite crossarms with maintenance positions described in the above embodiments, this application further provides some preferred embodiments that optimize the structure of the anti-slip sleeve 4. The following description, in conjunction with the appendix, illustrates these preferred embodiments. Figure 5 A detailed explanation is provided.

[0059] like Figure 5 As shown, in a preferred embodiment, when the anti-slip sleeve 4 is installed on the insulating sleeve 3, a structure with a platform 45 is formed on its upper part. The platform 45 has a flat surface and a certain area, and its shape is usually rectangular or approximately rectangular, but it can also be designed into other suitable shapes according to actual needs.

[0060] During power line maintenance, maintenance personnel need to stand on the crossarm's maintenance position to operate. The platform 45 on top of the anti-slip sleeve 4 provides a stable and flat support surface for maintenance personnel.

[0061] The surface of platform 45 can be treated with special anti-slip processes, such as adding anti-slip textures or setting anti-slip protrusions. These anti-slip designs can further increase the friction between maintenance personnel and platform 45, preventing maintenance personnel from slipping during operation and improving the safety of maintenance work.

[0062] The presence of platform 45 provides maintenance personnel with a standing and operating position on the crossarm. Compared to traditional anti-slip covers without a platform, maintenance personnel can stand more stably on platform 45, reducing operational errors and safety hazards caused by instability.

[0063] Based on the grouped composite crossarms with maintenance positions described in the above embodiments, this application further provides some preferred embodiments that optimize the surface structure of the upper platform 45 of the anti-slip sleeve 4. The following description, in conjunction with the appendix, further details these preferred embodiments. Figure 5 Detailed explanation.

[0064] like Figure 5 As shown, in a preferred embodiment, the platform 45 is provided with a plurality of flexible columnar protrusions 404. These flexible columnar protrusions 404 are evenly distributed on the surface of the platform 45, and are slender columnar in shape, with a height generally between 2 and 5 mm and a diameter of about 1 to 3 mm. The specific dimensions can be adjusted according to actual needs. The flexible columnar protrusions 404 are made of a flexible material, such as silicone rubber. Silicone rubber has good elasticity and wear resistance, and can deform to a certain extent when subjected to external force, and return to its original shape after the external force is removed. The flexible columnar protrusions 404 can be integrally formed with the sheath.

[0065] The flexible columnar protrusions 404 can be arranged in a regular matrix or in an irregular random arrangement. Regularly arranged flexible columnar protrusions 404 can form a uniform anti-slip texture on the surface of platform 45, providing a stable anti-slip effect; while irregularly arranged flexible columnar protrusions 404 can increase the friction with the contacting object, further improving the anti-slip performance.

[0066] During maintenance work, maintenance personnel will walk on platform 45, place tools, or perform other operations. The surface of platform 45 is easily contaminated by oil or rainwater, making it slippery. The presence of flexible columnar protrusions 404 increases the friction between the surface of platform 45 and the soles of the maintenance personnel's shoes or tools. When maintenance personnel step on platform 45, the flexible columnar protrusions 404 elastically deform and embed into the tread pattern of the shoe sole, effectively preventing the maintenance personnel from slipping. At the same time, the flexible columnar protrusions 404 also provide a fixing effect for tools placed on platform 45, preventing them from falling due to shaking.

[0067] In a preferred embodiment, the core rod 1 can be designed as a cylindrical structure. The cylindrical core rod 1 has a uniform circular cross-section, and its diameter can be determined according to factors such as the load-bearing requirements of the crossarm, the operating environment, and the installation space. The length of the cylindrical core rod 1 is adjusted according to the actual span and installation requirements of the power line to ensure that the crossarm can be stably installed on the tower and meet the support requirements of the line.

[0068] The cylindrical structure possesses excellent mechanical properties. Under tensile and compressive forces, its stress distribution is uniform, effectively distributing external forces across the entire core rod 1. For example, when the crossarm is subjected to the weight of the line, wind forces, or other forces, the cylindrical core rod 1 can evenly bear these forces, preventing damage to the core rod 1 caused by localized stress concentration. Simultaneously, the cylindrical structure also exhibits good resistance to bending and torsion, ensuring the stability of the crossarm under complex external forces.

[0069] In addition to a cylindrical structure, the core rod 1 can also be designed as a square column structure. The square column core rod 1 has four flat sides, the side length of which can be set according to actual needs. The length of the square column core rod 1 can also be adjusted according to the installation requirements of the power line.

[0070] The square column structure offers unique advantages in certain applications. For example, when connecting or cooperating with other square components, the square column mandrel 1 provides better positioning and fixation. Its flat sides facilitate the installation of bolts, nuts, and other fasteners, making the connection between the crossarm and other components more robust and reliable. Furthermore, the square column structure offers advantages in space utilization, enabling more stable support within limited space. The square column mandrel 1 exhibits high structural stability. Due to the mutual constraint of its four sides, the mandrel 1 is less prone to torsional deformation when subjected to external forces. During the operation of power lines, the square column mandrel 1 better maintains the stable posture of the crossarm, reducing line faults caused by swaying.

[0071] Finally, it should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0072] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0073] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0074] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A grouped composite crossarm with maintenance positions, characterized in that, include: The core rod (1) and the insulating skirt (2) and insulating sleeve (3) are integrally formed outside the core rod (1), and a plurality of insulating skirts (2) are provided between the two insulating sleeves (3). An inspection position is provided at the insulating sheath (3), and several flexible columnar fine protrusions (404) are provided at the inspection position.

2. The grouped composite crossarm with maintenance positions according to claim 1, characterized in that, The inspection position is an anti-slip coating or anti-slip sleeve (4).

3. The grouped composite crossarm with maintenance positions according to claim 2, characterized in that, The anti-slip sleeve (4) includes: a sleeve body (41), a first connector (42) located at the first end of the sleeve body (41), and a second connector (43) located at the second end of the sleeve body (41), wherein the first connector (42) and the second connector (43) are plugged into each other.

4. The grouped composite crossarm with maintenance position according to claim 3, characterized in that, The first connector (42) is provided with a first groove (401) and / or a first protrusion (402), and the first protrusion (402) and / or the first groove (401) are provided on the second connector (43) in correspondence with the first connector (42).

5. The grouped composite crossarm with maintenance positions according to claim 3 or 4, characterized in that, Both the first connector (42) and the second connector (43) are provided with fixing holes (403), which are used to pass through rivets or bolts.

6. The grouped composite crossarm with maintenance positions according to claim 2 or 3, characterized in that, The surface of the insulating sheath is provided with a plurality of second protrusions (31), and the inner wall of the anti-slip sheath (4) is provided with a plurality of second grooves (44) that cooperate with the second protrusions (31).

7. The grouped composite crossarm with maintenance position according to claim 6, characterized in that, When the anti-slip sleeve (4) is installed on the insulating sleeve (3), the top of the anti-slip sleeve (4) is set as a platform (45).

8. The grouped composite crossarm with maintenance position according to claim 7, characterized in that, The platform (45) is provided with several flexible columnar fine protrusions (404).

9. The grouped composite crossarm with maintenance position according to claim 7, characterized in that, The core rod (1) has a cylindrical or square columnar structure.

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