Carrying guide rail for power transmission tower and lifting device of carrying guide rail

Abstract

The invention relates to the technical field of power transmission equipment, and discloses a carrying guide rail for a power transmission tower, the carrying guide rail comprises two rails and a guide rod assembly, the two rails are symmetrically arranged at intervals in the vertical direction, and sliding grooves are formed in the side faces, facing each other, of the rails; the guide rod assembly comprises two mounting blocks and a plurality of guide columns, the two mounting blocks are distributed at intervals in the vertical direction, the guide columns are arranged between the two mounting blocks at intervals in the vertical direction, and the two ends of each guide column are connected with the surfaces, facing each other, of the two mounting blocks correspondingly; the sides, deviating from each other, of the installation blocks are provided with sliding parts matched with the sliding grooves, so that the guide rod assembly can be detachably installed between the two guide rails. The installation and maintenance process is simplified, the construction difficulty and cost are reduced, meanwhile, secondary damage to an iron tower structure caused by frequent disassembly and assembly is avoided, the problems that a traditional heavy guide rail unit is tedious in installation and maintenance and the safety of an iron tower is prone to being affected are solved, and the practical value of the guide rail is improved.

Description

Technical Field

[0001] This invention relates to the field of power transmission equipment technology, and in particular to a mounting rail for power transmission towers and its lifting device. Background Technology

[0002] Transmission towers are the support points for overhead lines. A transmission tower with one circuit is a single-circuit transmission tower, while one tower with two circuits is a double-circuit transmission tower. A single-circuit tower has one power supply circuit for each load, while a double-circuit tower has two power supply circuits for each load. Due to the large weight of the equipment, the generally bulky guide rail units, and their inherent structure, the guide rail units have a significant impact on the safety of the tower, indirectly limiting the use of lifting equipment in the power industry. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a guide rail for power transmission towers and its lifting device.

[0004] This application provides a mounting rail for a power transmission tower, including two rails and a guide rod assembly. The two rails are arranged symmetrically at intervals along the vertical direction, and each rail has a groove on its side facing each other. The guide rod assembly includes two mounting blocks and a plurality of guide posts. The two mounting blocks are spaced apart in the vertical direction, and the plurality of guide posts are spaced apart between the two mounting blocks in the vertical direction. The two ends of each guide post are respectively connected to the mutually facing surfaces of the two mounting blocks. Each of the mounting blocks has a sliding portion on one side opposite to the groove, so that the guide rod assembly can be detachably installed between the two guide rails.

[0005] In one possible implementation, the chute includes a first groove and a second groove that are connected to each other, the first groove being trapezoidal and the second groove being quadrilateral. The sliding part includes a first connecting part and a second connecting part that are integrally connected. The first connecting part is adapted to the first slot, and the second connecting part is adapted to the second slot.

[0006] In one possible implementation, the bottom surface of the second groove is recessed to form a recessed area, and the outer side of the second connecting part is provided with a protrusion that matches the recessed area.

[0007] In one possible implementation, the minimum width of the first slot is The maximum width of the first slot is The width of the second slot is Wherein, the width of the second slot and the width of the first slot satisfy the following relationship: 0.3 0.6.

[0008] In one possible implementation, the width of the second slot Meets the requirement of 11mm 13mm In one possible implementation, the minimum width of the first slot Meets the requirement of 4mm 5mm.

[0009] In one possible implementation, the width of the first slot... Meets the requirement of 7mm 8mm.

[0010] In one possible implementation, the guide post has an arc-shaped protrusion in the middle along the circumferential direction, which is adapted to fit the groove of the guide wheel in the lifting device.

[0011] In one possible implementation, the guide post has connecting threads at both ends, and the mounting block has threaded holes on the opposite surface that are adapted to the connecting threads.

[0012] This application also provides a lifting device, including the mounting rail for power transmission towers described above.

[0013] The technical solutions provided in this application have the following advantages compared with the prior art: By utilizing two spaced-apart rails with grooves on their opposing sides, and installing multiple guide posts between two mounting blocks to form a single unit, the sliding parts located on the opposite sides of the mounting blocks are aligned with the corresponding grooves on the rails, allowing the sliding parts to embed into the grooves. This completes the installation of the guide rod assembly between the two rails, eliminating the need for complex bolting or welding. During maintenance or replacement, the guide rod assembly can be directly slid out along the grooves without destructive operations on the tower or rails. In other words, this structure simplifies the installation and maintenance process, reduces construction difficulty and cost, and avoids secondary damage to the tower structure caused by frequent disassembly and assembly. It solves the problems of cumbersome installation and maintenance of traditional bulky guide rail units, which can compromise tower safety, thus enhancing the practical value of the guide rail. Attached Figure Description

[0014] Figure 1This is a schematic diagram of a structure for mounting a guide rail on a power transmission tower according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a power transmission tower with a mounting rail from another perspective according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the track structure in a power transmission tower mounting rail according to an embodiment of the present invention.

[0015] Icon labels: 10. Track; 10a. First slot; 10b. Second slot; 20. Guide rod assembly; 21. Mounting block; 21a. First connecting part; 21b. Second connecting part; 22. Guide post; 22a. Protrusion. Detailed Implementation

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or element referred to must have a specific orientation; therefore, they should not be construed as limitations on this invention.

[0017] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0018] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0019] like Figures 1 to 3 As shown in the figure, an embodiment of the present invention provides a mounting rail for a power transmission tower. The mounting rail includes two rails 10 and a guide rod assembly 20. The two rails 10 are symmetrically arranged at intervals along the vertical direction, and each rail 10 has a sliding groove on its mutually facing sides. The guide rod assembly 20 includes two mounting blocks 21 and a plurality of guide posts 22. The two mounting blocks 21 are distributed at intervals along the vertical direction, and the plurality of guide posts 22 are spaced apart between the two mounting blocks 21 along the vertical direction. Both ends of each guide post 22 are connected to the mutually facing surfaces of the two mounting blocks 21. Each mounting block 21 has a sliding portion on its opposite side that matches the sliding groove, allowing the guide rod assembly 20 to be detachably mounted between the two rails.

[0020] This embodiment of the transmission tower mounting rail utilizes two spaced-apart rails 10, with grooves formed on the sides of the rails facing each other. Multiple guide posts 22 are installed between two mounting blocks 21 to form a single unit. Then, sliding parts located on opposite sides of the mounting blocks 21 are aligned with the corresponding grooves on the rails 10, allowing the sliding parts to embed into the grooves. This completes the installation of the guide rod assembly 20 between the two rails 10 without complex bolting or welding operations. During maintenance or replacement, the guide rod assembly 20 can be directly slid out along the grooves without destructive operations on the tower body or rails 10. In other words, this structure simplifies the installation and maintenance process, reduces construction difficulty and cost, and avoids secondary damage to the tower structure caused by frequent disassembly and assembly. It solves the problems of cumbersome installation and maintenance of traditional bulky guide rail units, which can easily affect tower safety, thus enhancing the practical value of the guide rail.

[0021] In addition, the guide rod assembly 20 adopts a combination structure of two mounting blocks 21 and multiple guide posts 22 distributed vertically at intervals. It cleverly uses multiple guide posts 22 to replace the integral rigid structure. While ensuring the overall strength of the guide rod assembly 20, it significantly reduces the overall weight of the guide rail by distributing the force and reducing redundant materials. At the same time, the two rails 10 only cooperate with the mounting blocks 21 through the sliding groove, without the need for additional heavy connecting structures, which further reduces the load on the tower and improves the operating stability of the tower.

[0022] In one possible implementation, the chute includes a first slot 10a and a second slot 10b that are connected. The first slot 10a is trapezoidal, and the second slot 10b is quadrilateral. The sliding part includes a first connecting part 21a and a second connecting part 21b that are integrally connected. The first connecting part 21a is adapted to the first slot 10a, and the second connecting part 21b is adapted to the second slot 10b. That is, the trapezoidal first slot 10a and the adapted first connecting part 21a form an inclined surface fit, so as to effectively limit the horizontal displacement of the sliding part by utilizing the lateral constraint effect of the inclined sides of the trapezoid. The quadrilateral second slot 10b and the second connecting part 21b further constrain the vertical sway of the sliding part by fitting their flat sides together. In this way, the two together form a bidirectional limiting mechanism, making the connection between the guide rod assembly 20 and the track 10 tighter, significantly reducing the swaying during the lifting process, providing a stable operating foundation for the mounted lifting equipment, and solving the problem that traditional simple slot structures are prone to swaying due to gaps.

[0023] In addition, the first connecting part 21a contacts the inclined surface of the trapezoidal groove, which can disperse part of the lateral force to the groove wall of the track 10 through the inclined surface, avoiding stress concentration at a single contact point; while the second connecting part 21b contacts the straight side of the quadrilateral groove, which can evenly transfer the vertical load to the track 10, reducing local wear.

[0024] In one possible implementation, the bottom surface of the second slot 10b is recessed, and the outer surface of the second connecting part 21b is provided with a protrusion that matches the recess. That is, the recess and the protrusion fit together to form an embedded engagement structure, thereby adding constraint along the width of the slot to the surface contact between the second slot 10b and the second connecting part 21b. This ensures that when the guide rod assembly 20 is mounted on the lifting device, even if subjected to lateral forces (such as wind or equipment vibration), the protrusion will engage with the recess, effectively limiting the lateral relative displacement between the sliding part and the slide groove. This avoids the intermittent swaying that may occur in traditional surface contact structures, providing more stable support for the lifting device.

[0025] In one embodiment, the minimum width of the first slot 10a is , the maximum width of the first slot 10a is , and the width of the second slot 10b is ; wherein the width of the second slot 10b and the width of the first slot 10a satisfy the following relationship: 0.3 ≤ 0.6.

[0026] For example, the first slot 10a is trapezoidal, so that its opening is narrow and its interior is wide, thus having basic anti-detachment capability. Combined with the concave and convex structure of the second slot 10b under constraint, the two are combined to form a double anti-detachment system of trapezoidal inclined surface clamping and concave and convex mechanical locking. Even under extreme working conditions such as strong winds and equipment tilting, it can still prevent the sliding part from detaching from the slide.

[0027] Furthermore, the minimum width (narrow side of the opening) and maximum width (wide side of the interior) of the first slot 10a form a trapezoidal slope to withstand lateral forces (such as the swaying of lifting equipment and the lateral impact of high-altitude winds), while the recessed portion of the second slot 10b, in conjunction with the protrusion, bears the vertical load (equipment weight and worker weight) and the lateral anti-derailment force. By limiting the widths of the first slot 10a and the second slot 10b to the aforementioned range, a dynamic balance can be achieved between the lateral dispersion force of the trapezoid and the vertical bearing capacity of the second slot 10b, avoiding overload on a single structure, improving the overall fatigue resistance of the guide rail, and indirectly reducing the load impact on the tower. If the ratio is too low (less than 0.3), for example, if the minimum width and maximum width of the first slot 10a remain unchanged, and the width of the second slot 10b is too small, then the second slot 10b will not be able to bear the vertical load, which will easily lead to the deformation and failure of the concave-convex structure. If the ratio is too high (greater than 0.6), if the minimum width and maximum width of the first slot 10a remain unchanged, and the width of the second slot 10b is too large, then the effective inclined surface width of the trapezoidal slot will be compressed, weakening the ability to disperse lateral forces, and making the sliding part easy to disengage from the trapezoidal opening.

[0028] In one possible implementation, the width of the second slot 10b satisfies the following condition: 11mm ± 13mm. That is, if it is 11mm, the protrusion width is too narrow, and when bearing the load of the lifting equipment (such as its own weight or operational impact), stress concentration can easily lead to deformation or even breakage of the protrusion, directly compromising the anti-detachment / guiding function of the interlocking mechanism. If it is >13mm, the protrusion width is too wide, compressing the sidewall thickness of the recess, causing structural redundancy and resulting in a decrease in strength of the recess (such as slot wall cracking), similarly weakening the reliability of the interlocking mechanism. Therefore, this embodiment limits the width to the range of 11~13mm to ensure that the cross-sectional area of ​​the protrusion and recess is sufficient and not excessive, capable of withstanding the typical loads of high-altitude power operations, fundamentally avoiding the failure risk of the interlocking structure.

[0029] In one possible implementation, the minimum width of the first slot 10a satisfies 4mm ± 5mm. That is, if it is less than 4mm, the opening of the first slot 10a is too narrow, making insertion of the sliding part difficult, and the trapezoidal slope angle is too steep, making the slot prone to cracking due to stress concentration under pressure, thus weakening the anti-detachment capability; if it is greater than 5mm, the opening of the first slot 10a is too wide, making it easy for the sliding part to detach laterally from the slot opening, disrupting the dual anti-detachment synergy of the trapezoidal slot and the concave-convex fit of the second slot 10b, directly threatening the safety of high-altitude operations. Therefore, this embodiment limits the width to the range of 4-5mm, ensuring smooth insertion of the sliding part while constraining its lateral displacement through the narrow opening, and creating a dual safety redundancy of lateral locking and longitudinal anti-detachment with the concave-convex engagement of the second slot 10b.

[0030] In one possible implementation, the width of the first slot 10a satisfies 7mm-8mm. That is, if it is less than 7mm, the width of the connecting part is insufficient and it is prone to bending and deformation under lateral force; if it is greater than 8mm, the connecting part is too wide, resulting in increased weight of the guide rod assembly 20 and indirectly increasing the load on the tower. Therefore, this embodiment limits the width to the range of 7-8mm to ensure that the gap between the connecting part and the slot wall is reasonable, preventing swaying and ensuring smooth operation.

[0031] In one possible implementation, the guide post 22 has an arc-shaped protrusion 22a in the middle along the circumferential direction. The protrusion 22a is adapted to fit the groove of the guide wheel in the lifting device. That is, the arc-shaped protrusion 22a and the groove of the guide wheel form a kinematic pair with arc surface contact, so that when the guide wheel rolls, the groove automatically centers along the arc surface of the protrusion 22a, forcibly constraining the radial sway (left and right wobbling) and axial movement (offset along the length direction of the guide post 22) of the guide wheel, so that the lifting device runs strictly vertically along the guide post 22. Compared with the traditional method of guide wheel and guide post 22 contacting the plane, this design can control the running deviation of the lifting device within a very small range, avoiding equipment loss of control or decrease in operating accuracy due to shaking.

[0032] In one possible implementation, the guide post 22 has connecting threads at both ends, and the mounting block 21 has threaded holes on the opposite surface that are adapted to the connecting threads.

[0033] For example, in traditional guide rails, the guide post 22 and mounting block 21 are mostly welded or riveted, requiring welding or assembly at height, which has the disadvantages of long operation time and high safety risks. Specifically, in this embodiment, the guide post 22 and mounting block 21 are connected by threads, which can be screwed on and installed immediately. Furthermore, the guide rod assembly 20 can be pre-assembled on the ground (i.e., the guide post 22 is screwed into the mounting block 21 to form a complete guide rod unit) and then hoisted as a whole to the tower rail 10, thereby shortening the high-altitude operation time and significantly reducing the risks of falls, electric shocks, etc.

[0034] This application also provides a lifting device, including the mounting rail for power transmission towers described above.

[0035] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A mounting rail for a power transmission tower, characterized in that, It includes two tracks and a guide rod assembly. The two tracks are arranged symmetrically at intervals in the vertical direction, and each track has a groove on its side facing each other. The guide rod assembly includes two mounting blocks and a plurality of guide posts. The two mounting blocks are spaced apart in the vertical direction, and the plurality of guide posts are spaced apart in the vertical direction between the two mounting blocks. The two ends of each guide post are respectively connected to the mutually facing surfaces of the two mounting blocks. Each of the mounting blocks has a sliding portion on one side opposite to the groove, so that the guide rod assembly can be detachably installed between the two guide rails.

2. The mounting rail for power transmission towers according to claim 1, characterized in that, The chute includes a first groove and a second groove that are connected to each other. The first groove is arranged in a trapezoidal shape, and the second groove is arranged in a quadrilateral shape. The sliding part includes a first connecting part and a second connecting part that are integrally connected. The first connecting part is adapted to the first slot, and the second connecting part is adapted to the second slot.

3. The mounting rail for power transmission towers according to claim 2, characterized in that, The bottom surface of the second groove is recessed, and the outer side of the second connecting part is provided with a protrusion that matches the recess.

4. The mounting rail for power transmission towers according to claim 2, characterized in that, The minimum width of the first slot is The maximum width of the first slot is The width of the second slot is Wherein, the width of the second slot and the width of the first slot satisfy the following relationship: 0.3 0.

6.

5. The mounting rail for power transmission towers according to claim 4, characterized in that, Width of the second slot Meets the requirement of 11mm 13mm.

6. The mounting rail for power transmission towers according to claim 4, characterized in that, Minimum width of the first slot Meets the requirement of 4mm 5mm.

7. The mounting rail for power transmission towers according to claim 4, characterized in that, Width of the first slot Meets the requirement of 7mm 8mm.

8. The mounting rail for power transmission towers according to claim 1, characterized in that, The guide post has an arc-shaped protrusion in the middle along the circumference, which is used to fit the groove of the guide wheel in the lifting device.

9. The mounting rail for power transmission towers according to claim 1, characterized in that, The guide post has connecting threads at both ends, and the mounting block has threaded holes on the opposite surface that are adapted to the connecting threads.

10. A lifting device, characterized in that, The mounting rail for power transmission towers as described in any one of claims 1 to 9.

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