Adjustable hanger for high speed railway
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZHENGHE HINGE CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-08-07
AI Technical Summary
[0006]针对现有技术不足，本实用新型提供了一种高速铁路用可调整吊环，为解决传统高速铁路用吊环中的吊弦线长度调节较为繁琐、鸡心环与吊弦线之间连接强度较低以及鸡心环与吊弦线之间压接强度较低的问题
Smart Images
Figure CN224602733U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dropper devices for high-speed railways, specifically an adjustable dropper ring for high-speed railways. Background Technology
[0002] In high-speed railway electrification systems, the overhead contact line, as a crucial carrier for train current intake, directly impacts operational safety and efficiency. The integral dropper ring, a core component connecting the catenary and the contact wire, plays a vital role in transmitting loads and maintaining the contact line's geometric parameters. Its mechanical properties and structural reliability have a decisive influence on the system's safe operation. Current technologies typically employ integral dropper rings, dropper wires, and clamps, but these designs have revealed numerous technical shortcomings in practical applications, making it difficult to meet the stringent requirements of continuous speed increases in high-speed rail.
[0003] For example, in terms of adjusting the length of the dropper wire, traditional methods suffer from both cumbersome operation and insufficient precision. Early integrated dropper wires required a multi-step process of "measurement-removal-prefabrication-crimping-remeasurement" to adjust their length, with each operation taking more than 30 minutes. Furthermore, the lack of effective reference points during high-altitude operations and reliance on manual experience often resulted in adjustment errors exceeding 20mm, failing to meet the specification requirement of a height difference of ≤10mm between adjacent suspension points.
[0004] Regarding connection strength, the existing contact ring and dropper wire mating structure has significant design flaws: traditional contact rings only clamp the dropper wire through a single slot, which easily leads to localized stress concentration under the alternating vibration loads generated by high-speed train operation, resulting in accumulated plastic deformation and accelerated component wear. Furthermore, the connection between the contact ring and dropper wire lacks effective locking; when the vibration frequency couples with the system's natural frequency, resonance may occur, causing the connection to loosen or even detach, seriously threatening the safe operation of the overhead contact system.
[0005] In terms of crimping performance, traditional technology has failed to establish a standardized pressure transmission path, resulting in unstable electrical contact and mechanical connection performance between the dropper and the ring. Defective crimping quality will cause increased contact resistance, affecting current carrying efficiency. At the same time, traditional crimping parts lack a secondary locking mechanism, and crimping will loosen after long-term service, further aggravating energy loss and structural wear, and shortening the service life of the dropper. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides an adjustable suspension ring for high-speed railways, which solves the problems of cumbersome adjustment of the dropper string length, low connection strength between the ring and the dropper string, and low crimping strength between the ring and the dropper string in traditional high-speed railway suspension rings.
[0007] To achieve the above objectives, this utility model provides an adjustable dropper for high-speed railways, comprising an upper dropper for connection to an external catenary dropper clamp, a lower dropper for connection to an external contact wire dropper clamp, and a dropper connecting the upper and lower dropper. Both the outer peripheral walls of the upper and lower dropper are circumferentially provided with grooves for partial accommodation of the dropper. Each of the upper and lower dropper rings is connected to a connecting pipe for the end of the dropper to pass through the adjacent groove. The connecting pipe has a connection point... The adjacent channels are connected by a connecting hole. Both the upper and lower core rings are connected to a through pipe. The through pipe has a through hole for the end of the dropper wire to pass through after the corresponding channel is wound around it to form a current-carrying line. The upper core ring is provided with an adjustment structure for adjusting the length of the dropper wire between the upper and lower core rings and a locking structure for cooperating with the adjustment structure to improve the local pressing force on the dropper wire. The lower core ring is provided with a locking structure for improving the connection strength between the dropper wire and the lower core ring.
[0008] The advantages of adopting the above technical solution are as follows: In this technology, the upper core ring is connected to the external catenary dropper wire clamp, and the lower core ring is connected to the external contact wire dropper wire clamp, enabling precise docking between the dropper ring and key components of the contact network. The circumferential groove on the outer wall of the core ring provides localized containment and restraint for the dropper wire, preventing deviation during use. The connecting pipe allows the dropper wire end to pass through and connects to the groove via a connecting hole, ensuring smooth and stable connection. The through-hole on the pipe allows the dropper wire end to pass through the groove, forming a complete current-carrying wire and ensuring conductivity. Furthermore, the adjustment structure in this technology allows for adjustment of the dropper wire length between the upper and lower core rings, solving the problem of inconsistent dropper wire length adjustment in traditional methods. The locking and adjusting structures work together to improve the local pressing force on the dropper wire, preventing it from loosening. The locking structure enhances the connection strength between the lower core ring and the dropper wire, preventing it from falling off. The coordinated action of these components ensures that the dropper ring has stable connection performance, reliable current-carrying performance, and convenient adjustment performance under high-speed rail operating conditions. In the above technology, the axis of the connecting hole is set perpendicular to the center point of the core ring's shaft hole, meaning that the axis of the dropper wire and the center of the core ring are on the same central axis, ensuring that the force is perpendicular. In traditional systems, the center of the core ring and the dropper wire are not on the same central axis, which makes the dropper wire prone to breakage due to uneven stress after long-term service or fatigue.
[0009] This utility model further includes the following features: a notch is formed on the outer peripheral wall of the bottom of the connecting tube of the upper heart-shaped ring, the notch communicating with the connecting hole; the adjustment structure includes a slotted bolt and an adjusting nut threadedly engaged with the screw end of the slotted bolt; the screw end of the slotted bolt has a through groove along its axial direction for the connecting tube to pass through, the through groove penetrating the screw end of the slotted bolt; the nut end of the slotted bolt is positioned within the notch, and a first arc-shaped groove is formed on the inner wall of the nut end of the slotted bolt; the inner peripheral wall of the first arc-shaped groove corresponds to the inner peripheral wall of the connecting hole, and the combination of the inner peripheral wall of the first arc-shaped groove and the inner peripheral wall of the connecting hole forms an alignment with the connecting hole. The suspension wire is partially compressed and limited. The inner peripheral wall of the through hole connects to the outer wall of the upper ferrule, forming a receiving groove for partially accommodating the suspension wire. The opening of the receiving groove faces the inner wall of the adjusting nut. The locking structure includes a linkage block disposed between the adjusting nut and the receiving groove. The linkage block passes through the groove, and the outer walls on both sides of the linkage block abut against the inner wall of the groove. A second arc-shaped groove is formed on the inner wall of the linkage block. The second arc-shaped groove corresponds to the receiving groove, and the inner peripheral wall of the second arc-shaped groove and the inner peripheral wall of the receiving groove combine to form a partial compression and limitation of the suspension wire in the receiving groove. The bottom wall of the adjusting nut abuts against the top wall of the linkage block.
[0010] The advantages of adopting the above technical solution are: the notch on the outer peripheral wall of the bottom of the connecting tube of the upper heart ring is connected to the connecting hole, providing a suitable space for the installation of the slotted bolt. The slot of the slotted bolt in the adjustment structure allows the connecting tube to pass through, which can realize the stable assembly of the slotted bolt and the connecting tube. The nut end is located in the notch and the first arc groove on the inner wall matches the inner peripheral wall of the connecting hole, which can locally compress and limit the dropper wire in the connecting hole to prevent its displacement. Then, through the through hole, it connects to the receiving groove formed on the outer wall of the upper heart ring, which can provide additional local accommodation for the dropper wire to ensure smooth wiring. The locking structure's linkage block passes through a slot and abuts against the inner wall of the slot on both sides, ensuring the stability of the linkage block during movement. The second arc-shaped groove on its inner wall cooperates with the receiving groove, which can further compress the dropper wire in the receiving groove. The bottom wall of the adjusting nut abuts against the top wall of the linkage block. Rotating the adjusting nut can drive the linkage block to move synchronously, which not only achieves precise adjustment of the dropper wire length, but also enhances the pressing force through the double pressing structure, preventing the dropper wire from loosening under vibration and ensuring the coordinated reliability of the adjustment and locking functions.
[0011] The present invention further comprises: two claws are provided on the outer peripheral wall of the bottom of the connecting tube of the upper heart ring; the two claws are arranged opposite each other and the radial cross section of the claws is arc-shaped; the two claws are combined to form a crescent-shaped horseshoe buckle; the shaft hole of the horseshoe buckle is connected to the notch and the connecting hole respectively; the horseshoe buckle is located below the nut end of the slotted bolt; and the top wall of the horseshoe buckle is a limiting surface for restricting the radial displacement of the nut end of the slotted bolt.
[0012] The advantages of adopting the above technical solution are as follows: The horseshoe buckle is positioned to limit the nut end of the slotted bolt. When the nut end of the slotted bolt is subjected to external load and shows a tendency to radially shift, it is restricted by the limiting surface and cannot shift radially. This prevents the slotted bolt from radially dislodging from the slot, thus preventing the slotted bolt from separating from the upper ferrule and affecting the stability of the dropper wire. Simultaneously, the horseshoe buckle facilitates the positioning of the slotted bolt during installation, allowing the nut end of the slotted bolt to be quickly and accurately installed into the slot, thereby improving disassembly and assembly efficiency. Furthermore, the horseshoe buckle's shaft hole is connected to both the slot and the connecting hole for the dropper wire to pass through, thus guiding and positioning the dropper wire, further improving disassembly, assembly, and adjustment efficiency. It also prevents the dropper wire from loosening under vibration, ensuring the coordination and reliability of the adjustment and locking functions.
[0013] The present invention further includes the following: the locking structure further includes a locking block disposed between the linkage block and the adjusting nut. The locking block is provided through a through groove and the outer walls on both sides of the locking block abut against the inner wall of the through groove. The outer walls at both ends of the locking block are bent towards the outer peripheral wall of the adjusting nut to form a locking part, and the inner wall of the locking part abuts against the outer peripheral wall of the adjusting nut.
[0014] The advantages of adopting the above technical solution are as follows: The newly added locking block in the locking structure passes through the slot and abuts against the inner wall of the slot on both sides, ensuring the stability of the locking block after installation and preventing it from shaking during use. The locking parts at both ends of the locking block, bent towards the outer peripheral wall of the adjusting nut, abut against the outer peripheral wall of the adjusting nut, limiting the loosening tendency of the adjusting nut under long-term vibration conditions and preventing crimping failure of the adjusted dropper line due to nut loosening. The locking block, located between the linkage block and the adjusting nut, acts as a buffer, preventing the adjusting nut from directly pressing against the linkage block, thus avoiding localized wear and extending the service life of the linkage block and the adjusting nut. It also enhances the overall stability of the locking structure, further improving the crimping reliability of the dropper line and ensuring long-term stable operation of the lifting ring. In the above technology, the outer peripheral wall of the adjusting nut is typically six or eight-sided. After the adjusting nut is installed, the locking part abuts against a single surface on the outer peripheral wall of the adjusting nut, achieving mechanical locking of the adjusting nut through the setting of two locking parts.
[0015] The present invention further comprises: the locking block is composed of a connecting piece and two oppositely arranged locking pieces; the two locking parts correspond one-to-one with the two locking pieces and are connected; the radial cross section of the connecting piece is arc-shaped and forms a deformation groove; both ends of the connecting piece are bent to form annular anti-reverse pieces; the two anti-reverse pieces correspond one-to-one with the two locking pieces and are connected; both anti-reverse pieces pass through the shaft hole of the adjusting nut and are fitted with a clearance fit with the top wall of the adjusting nut.
[0016] The advantages of adopting the above technical solution are as follows: The locking block in the above technology consists of a connecting piece and two opposing locking pieces. The structural design is reasonable and facilitates processing and assembly. The two locking parts are connected one-to-one with the two locking pieces, ensuring uniform contact between the locking parts and the adjusting nut. The connecting piece has an arc-shaped radial cross-section with deformation grooves, giving it a certain deformation capacity to adapt to minor errors during assembly and ensuring the fit between the locking block and surrounding components. Simultaneously, the annular anti-reverse plates at both ends of the connecting piece are connected one-to-one with the locking pieces, providing reliable support and enhancing the overall structural strength of the locking block. The anti-reverse plates pass through the adjusting nut's shaft hole and have a clearance fit with the top wall of the adjusting nut, achieving a stable fit between the locking block and the adjusting nut while preventing... The wear caused by the rigid contact between the two enhances the structural adaptability and working stability of the locking block, further strengthening the locking effect. In the above technology, the maximum distance between the two anti-reverse plates is set to be greater than 1 mm larger than the diameter of the adjusting nut hole. This allows the two anti-reverse plates to be pried open by external tools such as pliers after the adjusting nut is connected and adjusted, so that the two anti-reverse plates expand outward to abut against the connection between the inner circumferential wall of the adjusting nut shaft hole and the top wall of the adjusting nut, thereby achieving the purpose of mechanical locking and preventing the adjusting nut from retracting. In the above technology, the width of the connecting plate fills the slot of the slotted bolt, so that the two side walls of the connecting plate abut against the inner wall of the slot, thereby ensuring a tighter thread fit between the slotted bolt and the adjusting nut, thus improving the connection strength between the two.
[0017] The present invention further comprises: both the linkage block and the locking block are made of stainless steel.
[0018] The advantages of adopting the above technical solution are: the linkage block and locking block are made of stainless steel, which has excellent corrosion resistance and can resist the erosion of moisture and dust in the outdoor operating environment of high-speed rail, preventing the components from being affected by rust and affecting the structural strength and service life. At the same time, stainless steel has high mechanical strength and fatigue wear resistance, and can withstand the force during the adjustment process of the dropper wire and the repeated impact caused by long-term vibration, avoiding the failure of the linkage block and locking block due to wear or deformation, ensuring that the adjustment structure and locking structure can play a stable role in the long term, reducing the maintenance frequency of the dropper ring, reducing operating costs, and ensuring the continuous reliability of the dropper ring under complex working conditions.
[0019] The present invention is further provided that the trough is connected to the outer peripheral wall of the connecting pipe and has an arc-shaped chamfer.
[0020] The advantages of adopting the above technical solution are: the arc-shaped chamfer formed at the junction of the trough and the outer peripheral wall of the connecting pipe can eliminate the sharp edges and corners at the transition between the trough and the connecting pipe, avoid local wear of the dropper wire due to edge friction during installation or long-term use, protect the structural integrity of the dropper wire, prevent the risk of breakage due to wear, and at the same time, the arc-shaped chamfer provides a smooth guide for the installation of the dropper wire, improves the convenience of the assembly process, avoids jamming or damage during the installation of the dropper wire, ensures that the current carrying capacity and load-bearing capacity of the dropper wire are not affected, ensures the safe operation of the entire lifting ring, and extends the service life of the dropper wire.
[0021] The present invention further includes: the locking structure comprising an octagonal crimping process for forming a crimping surface on the outer peripheral wall of the connecting pipe.
[0022] The advantages of adopting the above technical solution are as follows: In the above technology, the locking structure is formed by processing the connecting pipe with an octagonal crimping process to create a crimping surface. The crimping process allows the inner wall of the connecting pipe to fit tightly against the outer wall of the dropper wire, increasing the contact area and friction between the two, significantly improving the connection strength between the lower core ring and the dropper wire, and preventing the dropper wire from slipping under vibration or stress conditions. At the same time, the crimping surface structure formed by crimping is stable and can maintain the fastening effect on the dropper wire for a long time without loosening due to the increase of service time. Moreover, the octagonal crimping is a standardized process, which can ensure the consistency of the locking effect of different droppers, avoid the instability of connection quality caused by differences in manual operation, ensure the reliability and safety of the connection between the lower core ring and the dropper wire, and meet the stringent requirements of high-speed rail contact network for connection strength.
[0023] The present invention is further provided that both the upper and lower heart-shaped rings are made of precision-cast stainless steel.
[0024] The advantages of adopting the above technical solution are as follows: The upper and lower contact rings are made of precision-cast stainless steel. The precision casting process ensures that the contact ring has a dense structure and accurate dimensions, avoiding defects such as porosity and shrinkage that may occur in traditional casting processes. This improves the overall mechanical properties of the contact ring, enabling it to withstand the loads and vibrations during high-speed rail operation and preventing deformation or breakage. The stainless steel material gives the contact ring excellent corrosion resistance, allowing it to adapt to complex outdoor environments and preventing the components from having a reduced service life due to rust. At the same time, the precise dimensions ensure the fit between the contact ring and the external dropper clamps and dropper wires, ensuring stable connection and avoiding vibration or noise or connection failure caused by assembly gaps. This guarantees the working performance and safety of the dropper ring as a key component of the contact network. Attached Figure Description
[0025] Figure 1 This is a three-dimensional view of the present invention;
[0026] Figure 2This is a three-dimensional view of the upper heart ring and the dropper wire in the engagement state of this utility model;
[0027] Figure 3 This is a three-dimensional view of the upper heart-shaped ring in this utility model;
[0028] Figure 4 for Figure 3 Exploded 3D view;
[0029] Figure 5 This is a three-dimensional view of the lower ferrule and the dropper wire in the engagement state of this utility model;
[0030] Figure 6 This is a three-dimensional view of the lower chicken heart ring in this utility model. Detailed Implementation
[0031] This utility model provides an adjustable dropper for high-speed railways, comprising an upper dropper 1 for connecting to an external catenary dropper 12 clamp, a lower dropper 11 for connecting to an external contact wire dropper 12 clamp, and a dropper 12 for connecting the upper dropper 1 and the lower dropper 11. The outer peripheral walls of both the upper dropper 1 and the lower dropper 11 are circumferentially provided with grooves 13 for partially accommodating the dropper 12. Both the upper dropper 1 and the lower dropper 11 are connected to connecting pipes 14 for the end of the dropper 12 to pass through adjacent grooves 13. Each connecting pipe 14 has a connecting hole 141 communicating with the adjacent groove 13. Both the upper dropper 1 and the lower dropper 11 are connected to through pipes 15, each through pipe having a hole for connecting the dropper 12. After the end of the string 12 is wound around the corresponding groove 13, the end of the drop string 12 passes through the through hole 151 to form the current-carrying line 16. The upper heart ring 1 is provided with an adjustment structure for adjusting the length of the drop string 12 between the upper heart ring 1 and the lower heart ring 11, and a locking structure for cooperating with the adjustment structure to improve the local pressing force on the drop string 12. The lower heart ring 11 is provided with a locking structure for improving the connection strength between the drop string 12 and the lower heart ring 11. The outer peripheral wall of the connecting tube 14 of the upper heart ring 1 is provided with a notch 142, which is connected to the connecting hole 141. The adjustment structure includes a slotted bolt 2 and an adjusting nut 3 that is threaded to the screw end 21 of the slotted bolt 2. 21 has a through groove 23 along its axial direction for the connecting pipe 14 to pass through. The through groove 23 passes through the screw end 21 of the slotted bolt 2. The nut end 22 of the slotted bolt 2 is located in the notch 142, and the inner wall of the nut end 22 of the slotted bolt 2 has a first arc-shaped groove 221. The inner peripheral wall of the first arc-shaped groove 221 corresponds to the inner peripheral wall of the connecting hole 141, and the combination of the inner peripheral wall of the first arc-shaped groove 221 and the inner peripheral wall of the connecting hole 141 forms a partial clamping and limiting of the suspension wire 12 in the connecting hole 141. The inner peripheral wall of the through hole 151 connects to the outer wall of the upper heart ring 1, forming a receiving groove 152 for partial accommodation of the suspension wire 12. The opening of the receiving groove 152 faces the inner wall of the adjusting nut 3. The locking structure includes setting... A linkage block 31 is provided between the adjusting nut 3 and the receiving groove 152. The linkage block 31 is provided through the through groove 23, and the outer walls of the linkage block 31 on both sides abut against the inner wall of the through groove 23. A second arc-shaped groove 311 is provided on the inner wall of the linkage block 31. The second arc-shaped groove 311 is correspondingly provided with the receiving groove 152, and the inner peripheral wall of the second arc-shaped groove 311 and the inner peripheral wall of the receiving groove 152 combine to form a partial clamping and limiting of the suspension wire 12 in the receiving groove 152. The bottom wall of the adjusting nut 3 abuts against the top wall of the linkage block 31. Two claws are provided on the bottom outer peripheral wall of the connecting pipe 14 of the upper heart ring 1. The two claws are arranged opposite each other and the radial cross section of the claws is arc-shaped. The two claws combine to form a crescent-shaped horseshoe buckle 17.The shaft hole of the horseshoe buckle 17 is connected to the notch 142 and the connecting hole 141 respectively. The horseshoe buckle 17 is positioned below the nut end 22 of the slotted bolt 2. The top wall of the horseshoe buckle 17 is a limiting surface for limiting the radial displacement of the nut end 22 of the slotted bolt 2. The locking structure also includes a locking block 4 disposed between the linkage block 31 and the adjusting nut 3. The locking block 4 is disposed through the through groove 23 and the outer walls on both sides of the locking block 4 abut against the inner wall of the through groove 23 respectively. The outer walls at both ends of the locking block 4 are bent towards the outer peripheral wall of the adjusting nut 3 to form locking parts 41. The inner wall of the locking part 41 abuts against the outer peripheral wall of the adjusting nut 3. The locking block 4 is composed of a connecting piece 43 and two oppositely disposed locking pieces 42. The two locking parts 41 and the two locking pieces 42 The connecting pieces 43 are arranged in a one-to-one correspondence and connection configuration. The radial cross-section of the connecting piece 43 is arc-shaped, forming a deformation groove 431. Both ends of the connecting piece 43 are bent to form annular anti-retraction pieces 432. The two anti-retraction pieces 432 correspond one-to-one with the two locking pieces 42 and are connected. Both anti-retraction pieces 432 pass through the shaft hole of the adjusting nut 3 and are fitted with a clearance fit against the top wall of the adjusting nut 3. The linkage block 31 and locking block 4 are both made of stainless steel. The receiving groove 152 connects to the outer peripheral wall of the connecting pipe 14 and forms an arc-shaped chamfer 153. The locking structure includes a pressing surface 143 formed on the outer peripheral wall of the connecting pipe 14 by a hexagonal or octagonal pressing process. The upper and lower heart-shaped rings 1 and 11 are both made of precision-cast stainless steel.
[0032] The overall operation process of this patent:
[0033] 1. Preparation before installation: Check the integrity and surface cleanliness of components such as upper and lower ferrule, suspension wire, connecting pipe, through pipe, adjustment structure (slotted bolt, adjusting nut), and locking structure (linkage block, locking block) to ensure that there is no deformation, rust or impurities. At the same time, confirm that the crimping tools and other auxiliary equipment are in normal condition.
[0034] 2. Basic assembly of the upper heart ring: Fix the connecting pipe and the through pipe to the preset connection position of the upper heart ring respectively, ensuring that the connecting hole of the connecting pipe is connected to the groove on the outer peripheral wall of the upper heart ring, and the through hole of the through pipe corresponds to the groove; then lay one end of the drop wire along the groove of the upper heart ring, so that the end of the drop wire passes through the connecting hole of the connecting pipe into the groove, then winds around the groove and passes out through the through hole of the through pipe. Leave an appropriate length of the part that has passed out for future use, and at the same time ensure that the drop wire is locally adapted to the groove (the groove connects the through hole and the outer wall of the upper heart ring).
[0035] 3. Assembly of the upper heart-ring adjustment and locking structure: Align the slot of the slotted bolt with the connecting tube of the upper heart-ring, so that the nut end of the slotted bolt is embedded in the notch on the outer circumferential wall of the connecting tube, and the first arc-shaped groove on the inner wall of the nut end is aligned with the inner circumferential wall of the connecting hole, forming an initial limit on the suspension wire in the connecting hole; then, insert the linkage block through the slot of the slotted bolt, ensuring that both sides of the linkage block abut against the inner wall of the slot, and that the second arc-shaped groove on the inner wall of the linkage block corresponds to the receiving groove; then, insert the locking block into the slot, so that both sides of the locking block abut against the inner wall of the slot, and the locking parts at both ends are bent and abut against the outer circumferential wall of the adjusting nut; finally, adjust the screw... The screw end of the nut is threadedly connected to the slotted bolt. Rotate the adjusting nut until its bottom wall abuts against the locking block and the linkage block in sequence. The tightening force of the adjusting nut drives the linkage block to press the dropper wire in the groove. At the same time, the first arc groove cooperates with the connecting hole to press the dropper wire in the connecting hole. During this period, the adjusting nut can be loosened to fine-tune the length of the dropper wire until the relative position of the upper heart ring and the dropper wire meets the requirements. Then tighten the adjusting nut again to complete the locking. At this time, the operator bends the locking part of the locking block with external pliers or other tools so that the locking part abuts against the outer peripheral wall of the adjusting nut to achieve the locking limit of the adjusting nut.
[0036] 4. Lower core ring assembly: Referring to the upper core ring assembly method, fix the connecting pipe and the through pipe to the lower core ring, so that the connecting hole and the through hole are connected to the groove of the lower core ring respectively; lay the other end of the suspension wire along the groove of the lower core ring, pass through the connecting hole of the connecting pipe into the groove and then wind around it, and then pass out through the through hole of the through pipe to form a complete current-carrying line.
[0037] 5. Processing of the lower core ring locking structure: Use a crimping tool to process the connecting tube of the lower core ring with a hexagonal or octagonal crimping process, so that the outer peripheral wall of the connecting tube forms a crimping surface. Through crimping, the inner wall of the connecting tube is tightly attached to the outer peripheral wall of the dropper wire, which enhances the connection strength between the lower core ring and the dropper wire and prevents the dropper wire from slipping off.
[0038] 6. Overall Inspection and Adjustment: Inspect the laying condition of the dropper wire in the grooves, connecting holes, receiving slots, and through holes of the upper and lower core rings to ensure there is no twisting or jamming; verify the smoothness of the adjustment structure, confirm that the locking structure is not loose in pressing the dropper wire, and that the pressing surface of the locking structure is not cracked; finally, connect the upper core ring to the external load-bearing cable dropper wire clamp, and connect the lower core ring to the external contact wire dropper wire clamp to complete the installation of the overall dropper ring.
[0039] In the above-mentioned technology, in order to improve the connection strength and fit strength between the linkage block and the locking block, the linkage block and the locking block can be welded together by spot welding, thereby improving the strength between the two.
[0040] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.
Claims
1. An adjustable dropper ring for high-speed railway, comprising an upper dropper ring for connection to an external catenary dropper clamp, a lower dropper ring for connection to an external contact wire dropper clamp, and a dropper wire connecting the upper and lower dropper rings, wherein the outer peripheral walls of the upper and lower dropper rings are both circumferentially provided with grooves for partial accommodation of the dropper wire, and both the upper and lower dropper rings are connected to connecting pipes for the end of the dropper wire to pass through adjacent grooves, the connecting pipes having connecting holes communicating with adjacent grooves, and both the upper and lower dropper rings are connected to through pipes, the through pipes having through holes for the end of the dropper wire to pass through after the corresponding groove is wound around it to form a current-carrying wire, characterized in that: The upper heart ring is provided with an adjustment structure for adjusting the length of the dropper wire between the upper heart ring and the lower heart ring, and a locking structure for cooperating with the adjustment structure to improve the local pressing force on the dropper wire. The lower heart ring is provided with a locking structure for improving the connection strength between the dropper wire and the lower heart ring.
2. The adjustable lifting ring for high-speed railway according to claim 1, characterized in that: A notch is formed on the outer peripheral wall of the bottom of the connecting tube of the upper heart-shaped ring. The notch communicates with the connecting hole. The adjustment structure includes a slotted bolt and an adjusting nut that is threaded to the screw end of the slotted bolt. The screw end of the slotted bolt has a through groove along its axial direction for the connecting tube to pass through. The through groove passes through the screw end of the slotted bolt. The nut end of the slotted bolt is located in the notch, and the inner wall of the nut end of the slotted bolt has a first arc-shaped groove. The inner peripheral wall of the first arc-shaped groove corresponds to the inner peripheral wall of the connecting hole, and the combination of the inner peripheral wall of the first arc-shaped groove and the inner peripheral wall of the connecting hole forms a support for the dropper wire in the connecting hole. The clamping limit of the part, the inner peripheral wall of the through hole is connected to the outer wall of the upper heart ring to form a receiving groove for partially accommodating the dropper wire, the opening of the receiving groove is set towards the inner wall of the adjusting nut, the locking structure includes a linkage block set between the adjusting nut and the receiving groove, the linkage block is set through the through groove and the outer walls on both sides of the linkage block are abutted and fitted with the inner wall of the through groove, the inner wall of the linkage block is provided with a second arc-shaped groove, the second arc-shaped groove is correspondingly set with the receiving groove, and the inner peripheral wall of the second arc-shaped groove and the inner peripheral wall of the receiving groove are combined to form a partial clamping limit for the dropper wire in the receiving groove, the bottom wall of the adjusting nut is abutted and fitted with the top wall of the linkage block.
3. The adjustable lifting ring for high-speed railway according to claim 2, characterized in that: Two clamps are provided on the outer peripheral wall of the bottom of the connecting tube of the upper heart-shaped ring. The two clamps are arranged opposite each other and the radial cross section of the clamps is arc-shaped. The two clamps are combined to form a crescent-shaped horseshoe buckle. The shaft hole of the horseshoe buckle is connected to the notch and the connecting hole respectively. The horseshoe buckle is located below the nut end of the slotted bolt. The top wall of the horseshoe buckle is a limiting surface used to limit the radial displacement of the nut end of the slotted bolt.
4. The adjustable lifting ring for high-speed railway according to claim 2, characterized in that: The locking structure also includes a locking block disposed between the linkage block and the adjusting nut. The locking block is provided with a through groove and the outer walls on both sides of the locking block abut against the inner wall of the through groove. The outer walls at both ends of the locking block are bent towards the outer peripheral wall of the adjusting nut to form a locking part, and the inner wall of the locking part abuts against the outer peripheral wall of the adjusting nut.
5. The adjustable lifting ring for high-speed railway according to claim 4, characterized in that: The locking block consists of a connecting piece and two oppositely arranged locking pieces. The two locking parts correspond one-to-one with the two locking pieces and are connected. The radial cross-section of the connecting piece is arc-shaped and forms a deformation groove. Both ends of the connecting piece are bent to form annular anti-reverse pieces. The two anti-reverse pieces correspond one-to-one with the two locking pieces and are connected. The two anti-reverse pieces pass through the shaft hole of the adjusting nut and are fitted with a clearance fit with the top wall of the adjusting nut.
6. The adjustable lifting ring for high-speed railway according to claim 4, characterized in that: Both the linkage block and the locking block are made of stainless steel.
7. An adjustable lifting ring for high-speed railway according to claim 2, characterized in that: The trough is connected to the outer peripheral wall of the connecting pipe and has an arc-shaped chamfer.
8. The adjustable lifting ring for high-speed railway according to claim 1, characterized in that: The locking structure includes processing the connecting pipe using an octagonal crimping process to form a crimping surface on the outer peripheral wall of the connecting pipe.
9. An adjustable lifting ring for high-speed railways according to claim 1, characterized in that: Both the upper and lower heart-shaped rings are made of precision-cast stainless steel.